An air transport vehicle suspension hoist system

Abstract

The application provides an over-head transport vehicle suspension lifting system applied to the technical field of semiconductor carrying equipment, wherein the over-head transport vehicle suspension lifting system comprises: a ceiling installation assembly fixedly installed on the lower surface of a ceiling, a lifting and lifting assembly and a butt joint track installed in the ceiling installation assembly, the lifting and lifting assembly controls the lifting of a lifting platform assembly through the winding and unwinding of a flexible belt, and the ground platform track is a ground movable platform track used for exchanging an OHT trolley with the lifting platform assembly. Through adjustment of the layout relationship between various components in the lifting system, the height and occupied volume of the system are reduced, and the system is very flexible in workshop deployment and application.

Description

Technical Field

[0001] This application relates to the field of semiconductor processing equipment technology, specifically to a suspended lifting system for an aerial transport vehicle. Background Technology

[0002] Overhead-Hoist Transportation (OHT) is a system for transporting materials in front-open unified pods (Foup). Due to its greater spatial flexibility, it is now widely used in automated material handling systems. For example, wafer transfer between semiconductor foundries (Fabs, wafer fabrications) is generally accomplished using OHT vehicles (also known as overhead transport vehicles) to connect various processes.

[0003] To meet the demands of integrated circuits, semiconductor manufacturers typically prioritize increasing production capacity and yield rates. To achieve these capacity targets, current semiconductor wafer foundries widely employ overhead trolleys (OHTs) to automate the transfer of wafers between various devices. However, the widespread use of OHTs in factories has brought about several challenges: how to quickly get the OHTs onto overhead tracks (OHT tracks) for operation, and how to maintain and service them.

[0004] Therefore, the common practice is to use an automated OHT lifting system (OHT Lifter) to solve the problem of quickly moving the OHT cart up and down the track, as well as to meet the needs of rapid deployment, subsequent maintenance, and upkeep of the OHT.

[0005] However, most current OHT lifting systems are based on lifting frames to achieve OHT lifting, such as tower lifting systems. Lifting frames occupy a large area, which inevitably requires a lot of space in the workshop. Since OHT lifts themselves are used very infrequently, the space in the already very compact semiconductor workshop is wasted significantly. This further squeezes the space required for supporting facilities related to capacity expansion (such as the space required for storage and handling equipment), which is very detrimental to increasing the capacity of semiconductor manufacturing plants. Summary of the Invention

[0006] In view of this, this application provides an aerial transport vehicle suspension lifting system. By improving and optimizing the rearrangement of various components in the aerial transport vehicle suspension lifting system, the system can be flexibly deployed and applied by making full use of the height space between the aerial running track and the roof.

[0007] This application provides the following technical solution:

[0008] This application provides an OHT suspended lifting system, including: a ceiling mounting assembly, a lifting assembly, a lifting platform assembly, and a docking rail;

[0009] The ceiling mounting assembly is fixedly installed on the lower surface of the ceiling to provide a component installation space of a preset height within the frame of the ceiling mounting assembly;

[0010] The lifting and boosting assembly is mounted on the roof mounting assembly and is configured as a synchronous belt retraction and release assembly.

[0011] The lifting platform assembly is connected to the belt assembly so as to raise and lower the belt assembly as the lifting and lowering assembly moves.

[0012] The docking rail is suspended below the ceiling mounting assembly, wherein one end of the docking rail docks with the overhead rail, and the other end of the docking rail is used to dock with the parking rail of the lifting platform assembly when the lifting platform assembly rises to the docking position. The parking rail of the lifting platform assembly is located inside the lifting platform assembly.

[0013] The lifting platform assembly is equipped with an anti-slip mechanism, which is configured to: when the lifting platform assembly is not connected to the docking rail, restrict the movement of the OHT trolley carried on the lifting platform assembly relative to the lifting platform assembly or to prevent it from leaving the lifting platform assembly; when the lifting platform assembly is connected to the docking rail, allow the OHT trolley to travel between the docking rail and the lifting platform assembly.

[0014] The docking track is equipped with an anti-slip docking mechanism, which is configured to: when the lifting platform assembly is not docked with the docking track, restrict the OHT trolley carried on the docking track from moving away from the docking track in the direction of docking with the lifting platform assembly; when the lifting platform assembly is docked with the docking track, allow the OHT trolley to travel between the docking track and the lifting platform assembly.

[0015] Compared with the prior art, the beneficial effects that at least one of the above-mentioned technical solutions adopted in this application can achieve include at least:

[0016] On the one hand, the use of a flat frame hoisting structure to form the ceiling-mounted components not only facilitates installation and fixation under the ceiling, but also effectively reduces the dimensions of the hoisting components in the height direction, and utilizes the internal space of the frame to provide the necessary height space for component installation. Therefore, the overall height of the OHT suspended lifting system is not easily limited by the installation height between the overhead track and the ceiling, making it convenient for the OHT suspended lifting system to be flexibly deployed and applied at different installation heights;

[0017] Secondly, the lifting and hoisting components and docking rails are installed on the lower surface of the ceiling mounting components. Moreover, the lifting platform components are connected to the lifting and hoisting components via flexible belts. This allows for flexible adjustment of the actual distance between the overhead running rails and the ceiling in the workshop. Only the belt length between the lifting and hoisting components and the lifting platform components, as well as the installation height of the docking rails, need to be adjusted during actual deployment to quickly meet the height matching requirements between the OHT suspended lifting system and the overhead running rails.

[0018] In three aspects, by adopting a mobile ground platform track, when the OHT trolley needs to be put into operation or taken off the line for maintenance, the platform track can be quickly moved to the required position and quickly docked with the lifting platform component. After the OHT trolley completes its operation, the platform track can be quickly moved to other positions in the workshop, effectively avoiding excessive occupation of ground space by the OHT suspended lifting system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of an OHT suspended lifting system according to this application;

[0021] Figure 2 This is a front view structural schematic diagram of an OHT suspended lifting system according to this application;

[0022] Figure 3 This is a rear view structural schematic diagram of an OHT suspended lifting system according to this application;

[0023] Figure 4 This is a top view structural schematic diagram of an OHT suspended lifting system according to this application;

[0024] Figure 5 This is a right-side structural schematic diagram of an OHT suspended lifting system according to this application;

[0025] Figure 6 This is a schematic diagram of the left side of an OHT suspended lifting system according to this application;

[0026] Figure 7 This is a schematic diagram of the platform track casters in an OHT suspended lifting system according to this application;

[0027] Figure 8This is a structural schematic diagram of a ceiling mounting component according to this application;

[0028] Figure 9 This is a structural schematic diagram of the main frame and the adjustment plate in this application;

[0029] Figure 10 This is a schematic diagram of the fixing and adjustment structure of the large adjusting plate in this application. The two adjacent hanging beams are omitted in the figure.

[0030] Figure 11 This is a schematic diagram of the structure of the adjusting plate in this application, which uses an adjusting mechanism for fixing and adjusting.

[0031] Figure 12 This is a front view structural schematic diagram of the ceiling mounting component in this application;

[0032] Figure 13 yes Figure 12 A schematic diagram of the cross-sectional view along the AA direction;

[0033] Figure 14 yes Figure 12 A schematic diagram of the cross-sectional view along the BB direction;

[0034] Figure 15 This is a schematic diagram of the structure in this application where the main frame is fixed with corner brackets;

[0035] Figure 16 This is a schematic diagram of the wireless power supply cable in this application;

[0036] Figure 17 This is a schematic diagram of the structure of the wireless power supply device installed on the lifting platform assembly in this application;

[0037] Figure 18 This is a schematic diagram of the isometric structure of the wireless power supply cable and the power collector in this application for obtaining power;

[0038] Figure 19 This is a schematic diagram of another wireless power supply cable and power supply layout in this application;

[0039] Figure 20 This is a schematic diagram of the structure of a detection component in this application;

[0040] Figure 21 This is a schematic diagram of the structure of an integrated baffle in a detection component of this application;

[0041] Figure 22 This is a schematic diagram of the structure of a detection component in this application, in which the detector and the baffle realize detection.

[0042] Figure 23 This is a schematic diagram of the structure used in this application to monitor the working area using radar;

[0043] Figure 24 This is a three-dimensional structural diagram of a lifting assembly in which a belt is installed, according to this application.

[0044] Figure 25 This is a three-dimensional structural diagram of a lifting assembly without a belt installed in this application;

[0045] Figure 26 This is a partial structural schematic diagram of a lifting and boosting component in this application;

[0046] Figure 27 This is a front view structural schematic diagram of a transmission mechanism in this application;

[0047] Figure 28 This is a three-dimensional view structural schematic diagram of a transmission mechanism in this application;

[0048] Figure 29 This is a schematic diagram of the axonal structure of an anti-slip mechanism applied in a lifting platform assembly in this application, viewed from one angle.

[0049] Figure 30 This is a schematic diagram of the axonal structure of an anti-slip mechanism applied in a lifting platform assembly in this application from another perspective.

[0050] Figure 31 This is a structural schematic diagram of the locking component in the anti-slip mechanism of this application;

[0051] Figure 32 This is a structural schematic diagram of the unlocking component in the anti-rollover mechanism of this application;

[0052] Figure 33 This is a schematic diagram of the structure of the unlocking component in the power supply circuit space in this application;

[0053] Figure 34 This is a structural schematic diagram of a docking track and its anti-runaway component according to this application, in which the stop bar is in the blocking position;

[0054] Figure 35 This is a structural schematic diagram of a docking track and its anti-runaway component according to this application, in which the stop bar is in the released blocking position;

[0055] Figure 36 This is a schematic diagram of the baffle bar in the anti-rollover component of this application;

[0056] Figure 37 This is a structural schematic diagram of a fall protection component in this application;

[0057] Figure 38 This is a structural schematic diagram of a docking track and its anti-fall component according to this application;

[0058] Figure 39 This is a structural schematic diagram of a docking track and its anti-fall component according to this application. Detailed Implementation

[0059] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0060] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0062] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0063] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0064] Currently, a preliminary solution has been adopted to replace the frame-type lifting system with a suspended lifting system in order to meet the needs of OHT (Outlet Toll Collection) for track entry, maintenance, and upkeep.

[0065] However, in actual production workshops, overhead tracks are usually installed close to the ceiling, resulting in limited space between the track and the ceiling. Furthermore, due to production turnover needs, the distance (i.e., height) between the overhead track and the ceiling may vary in different workshops, thus requiring different ceiling heights for installing the lifting system.

[0066] Therefore, existing suspended lifting systems are difficult to deploy quickly in spaces with different installation heights.

[0067] In view of this, after in-depth research and improvement exploration of aerial tracks and OHT suspended lifting systems, a proposed OHT suspended lifting system scheme is given: [e.g., ...] Figure 1 As shown, the OHT suspended lifting system includes a ceiling mounting assembly 1, a lifting assembly 2, a lifting platform assembly 3, a docking rail 4, an overhead electrical cabinet 5, a ground control cabinet 6, and a ground platform rail 7.

[0068] Among them, the ceiling mounting component 1 is a flat frame hoisting component. In this case, the internal space of the frame of the ceiling mounting component 1 can be used as the installation space for some components of the OHT suspended lifting system, such as the lifting component 2 (e.g., a belt lifting winch component with a power mechanism), docking rail 4, etc. The lifting component 2 controls the lifting of the lifting platform component 3 through the belt, which facilitates the high-precision and stable docking of the lifting platform component 3 through the docking rail 4. In addition, the overhead electrical cabinet 5 is set in the side space of the ceiling mounting component 1 to make full use of the suspended space, and the ground control cabinet 6 is placed on the ground for convenient operation and control by personnel. Furthermore, the ground platform rail 7 is a mobile platform rail set on the ground. Before the OHT trolley enters the OHT suspended lifting system, it can be placed in the ground platform rail 7. After the docking rail of the lifting platform component 3 docks with the ground platform rail 7, the OHT trolley can enter the lifting platform component 3 from the ground platform rail 7. The OHT suspended lifting system assists the OHT trolley to enter other overhead running rails (not shown in the figure) through the docking rail 4.

[0069] Based on the above system components, the OHT suspended lifting system has the following characteristics:

[0070] On the one hand, by adopting the ceiling-mounted component 1, a flat hoisting structure can be formed using a flat frame, which effectively reduces the size of the hoisting component in the height direction. Moreover, the internal space of the frame can provide some of the height space required for component installation. Therefore, by adopting a flat frame structure, it is not only easy to install and fix it under the ceiling, but the internal space of the frame can also provide a certain height of accommodation space as component installation space. This makes the overall height of the OHT suspended lifting system less susceptible to the installation height limitation between the overhead track and the ceiling, and facilitates the flexible deployment and application of the OHT suspended lifting system at different installation heights.

[0071] Secondly, the lifting assembly 2 and the docking rail 4 are installed on the lower surface of the ceiling mounting assembly 1, and the lifting platform assembly 3 is connected to the lifting assembly 2 via a flexible belt. Therefore, it is possible to flexibly adjust the belt length between the lifting assembly 2 and the lifting platform assembly 3 and the installation height of the docking rail 4 in the actual deployment according to the actual height distance between the overhead running rail and the ceiling. This will quickly meet the height matching between the OHT suspended lifting system and the overhead running rail.

[0072] In three aspects, after adopting the mobile ground platform track 7, when the OHT trolley goes online or offline, the ground platform track 7 can be quickly moved to the required position, which facilitates quick docking with the lifting platform component 3. After the OHT trolley completes its online or offline process, the ground platform track 7 can be moved to other positions in the workshop, effectively avoiding excessive occupation of ground space by the OHT suspended lifting system.

[0073] Therefore, the OHT suspended lifting system based on the above structure can be deployed and applied to actual workshops with great flexibility.

[0074] It should be noted that the electrical control equipment used for lifting in the above illustrations can be installed centrally or separately in actual deployment. For example, a separate approach is as follows: the overhead electrical cabinet and the ground control cabinet are located separately in the air and on the ground. The overhead electrical cabinet is placed in the side space of the ceiling-mounted components, while the ground control cabinet is flexibly deployed in a designated location on the workshop floor. This allows for convenient overall deployment and application of the OHT suspended lifting system according to the actual workshop conditions. Furthermore, when the OHT trolley needs to be put into operation (i.e., enter the overhead track for operation) or taken out for maintenance (i.e., exit the overhead track for repair and maintenance), it is very convenient for operators to operate the ground control cabinet to control the lifting components of the lifting platform components. The entire lifting process and equipment operating status are easily monitored by the operator, allowing for timely equipment shutdown and alarm activation in case of any dangerous situations. The following examples can be illustrated using systems that include electrical cabinets and control cabinets. In addition, the electrical connections of electrical cabinets, control cabinets, etc., can be implemented with reference to known technologies and will not be described in detail here.

[0075] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0076] like Figures 1 to 7 As shown in the embodiments of this specification, an OHT suspended lifting system is provided, which may include: a ceiling mounting assembly 1, a lifting assembly 2, a lifting platform assembly 3, a docking rail 4, an overhead electrical cabinet 5, a ground control cabinet 6, and a ground platform rail 7.

[0077] In practice, the ceiling mounting component 1 is preferably a flat frame hoisting component, wherein the ceiling mounting component 1 is fixedly installed on the lower surface of the ceiling (i.e., the ceiling). Since the fixed frame itself has a certain height dimension, the interior of the ceiling mounting component 1 frame can provide a component installation space of a preset height. That is, the interior space of the ceiling mounting component 1 frame can form a accommodating space of a certain installation height. This accommodating space can be used as an installation space for some components inside the OHT suspended lifting system. For example, necessary components such as the lifting and hoisting component 2 of the OHT suspended lifting system (e.g., a belt lifting winch component with a power mechanism), docking rail 4, etc., and auxiliary components such as the detection unit of the OHT suspended lifting system, etc. will be installed. The installation of each component in the accommodating space will be explained in detail in the following examples.

[0078] In practice, the lifting and hoisting assembly 2 can be a hoisting assembly that includes a power mechanism and a transmission mechanism. The power mechanism is used to drive the transmission mechanism to synchronously wind and unwind the flexible belt, which facilitates the high-precision and stable docking of the lifting platform assembly 3 through the docking rail 4.

[0079] In implementation, the lifting platform assembly 3 is connected to the flexible belt in the transmission mechanism. Therefore, the flexible belt, which is extended and retracted by the transmission mechanism, can control the lifting and lowering of the lifting platform assembly 3. That is, the lifting platform assembly 3 can rise and fall with the extension and retraction of the flexible belt in the transmission mechanism. It should be noted that the lifting platform assembly 3 is a component used for lifting the OHT trolley during track switching. For example, if the OHT trolley needs to be put into operation (i.e., enter the overhead operating track), it enters the lifting platform assembly 3 from the ground (usually the ground platform track 7), and then rises with the lifting platform assembly 3 to the docking position of the overhead operating track. After the OHT trolley enters the docking track 4 from the lifting platform assembly 3, it can enter the overhead operating track for operation. Of course, the OHT trolley can also be taken off the overhead operating track to the ground for inspection, maintenance, and repair.

[0080] In practice, docking rail 4 is suspended below the ceiling mounting assembly, with one end of docking rail 4 connecting to the overhead rail, and the other end used to connect with the internal rail of the lifting platform assembly 3 when the lifting platform assembly rises to the docking position. It should be noted that the internal rail of the lifting platform assembly 3 (which may be referred to as the parking rail or stopping rail of the OHT trolley, etc., and is not distinguished in this document) refers to the rail located inside the lifting platform assembly 3 and used for temporary stopping of the OHT trolley during lifting.

[0081] Additionally, one end of the docking rail 4, suspended below the ceiling mounting assembly 1, is connected to the working rail of the OHT trolley via a rail fastener. The other end of the docking rail 4 is open, allowing it to dock with the lifting platform assembly 3. It should be noted that those skilled in the art should understand that the aforementioned overhead rail (or overhead running rail, which is not distinguished herein) refers to the working rail suspended from the ceiling and used for the movement of the OHT trolley during transport tasks.

[0082] Therefore, when an OHT trolley needs to be lifted and pushed into the OHT working track, the OHT trolley is first placed on the lifting platform assembly 3. After the lifting platform assembly 3 is connected to the docking rail 4 suspended below the ceiling mounting assembly 1, the OHT trolley on the lifting platform assembly 3 can drive into the working track via the docking rail 4. Alternatively, when an OHT trolley needs maintenance, after the lifting platform assembly 3 is connected to the docking rail 4 suspended below the ceiling mounting assembly 1, the OHT trolley can enter via the docking rail 4 and be lowered to the ground on the lifting platform assembly 3 for maintenance.

[0083] In practice, the overhead electrical cabinet 5 (which may be referred to as an electrical control box, electrical control cabinet, etc., and is not distinguished in this article) is installed on the outside of the component installation space (e.g., Figure 1(The schematic frame encloses an outer gap space), the overhead electrical cabinet 5 is used to provide working power to components such as the lifting assembly 2 and the lifting platform assembly 3.

[0084] In practice, the ground control cabinet 6 (which may be called a ground cabinet, control cabinet, etc., and this article does not make a distinction) is set at a designated location on the ground. The ground control cabinet 6 is used to control the working status of components such as the overhead electrical cabinet 5, the lifting and hoisting assembly 2 and / or the lifting platform assembly 3. Therefore, after these components work together, the control of the online operation or offline maintenance of the OHT trolley can be completed under the unified control of the operator, so that the working process can be monitored by the operator in real time.

[0085] In practice, the ground platform track 7 is a mobile platform track. The ground platform track 7 has a temporary stopping track and internal space for the OHT trolley. Therefore, the ground platform track 7 can be used to dock with the internal track of the lifting platform component 3, so that the OHT trolley can switch tracks between the ground platform track 7 and the lifting platform component 3 to complete the online or offline operation.

[0086] In some examples, the bottom of the movable ground platform track 7 may be equipped with movable wheels with locking elements 701 and unlocking elements 702 (see details). Figure 7 (Illustration)

[0087] In some examples, the lifting platform assembly and the ground platform track can be manually locked together using locking mechanisms, allowing the OHT trolley to switch tracks while locked.

[0088] refer to Figures 1 to 6 As shown, the ground platform track 7 includes a first locking part 703, and the lifting platform assembly 3 includes a second locking part 310; wherein, the first locking part 703 is disposed on the first end of the parking track of the ground platform track 7 (refer to the figure), and the second locking part 310 is disposed on the first end of the parking track of the lifting platform assembly 3, and the first end of the parking track of the ground platform track 7 and the first end of the parking track of the lifting platform assembly 3 are docking ends.

[0089] In some implementations, a roof mounting assembly for a flat frame hoisting component can be constructed by combining a structurally strong frame with a rigid large plate.

[0090] like Figures 8 to 15 As shown, the ceiling mounting component 1 includes a frame body 101, an adjustment plate 102 for hoisting, and an adjustment mechanism 103.

[0091] In implementation, the central part of the frame body 101 is an open space, which can be used to accommodate or install other components as needed, or to allow other components to extend into the space. It should be noted that the frame body 101 may include multiple hanging beams, and the multiple hanging beams surround and form an upper and lower open accommodating space located in the central part of the frame body, which can serve as the open space in the central part of the frame.

[0092] In implementation, the adjusting plate 102 is adjustablely connected to the four sides of the frame body 101 via the adjusting mechanism 103. The adjusting plate 102 is located in the accommodating space of the frame body 101 and is positioned facing the ceiling. Therefore, the area below the adjusting plate 102, together with the inner sides of the frame body 101, forms the component installation space described in the aforementioned example. Preferably, the adjusting plate 102 is a rigid, integral plate structure. In this case, the adjusting plate 102 can provide corresponding installation positions and uniform flatness for components such as the lifting assembly 2 and the docking track 4. It should be noted that the adjusting plate 102, as a rigid, integral plate, is positioned on the ceiling-facing side of the frame body 101, thus reserving ample space below it for installing other components. Furthermore, the rigidity of the adjusting plate 102 provides good flatness (or levelness) for the lifting system.

[0093] In practice, the adjustment mechanism 103 includes a support plate 1031 and an adjustment screw 1032. The support plate 1031 is fixedly connected to the frame body 101. The adjustment screw 1032 is disposed between the adjustment plate 102 and the support plate 1031. Therefore, when the adjustment screw 1032 rotates, it can drive the adjustment plate 102 to move partially or entirely to change the position or posture of the adjustment plate.

[0094] It should be noted that by adjusting the screw 1032, the adjusting plate 102 can be adjusted up and down, thereby providing a level overall mounting surface for other components of the OHT suspension lifting system (such as the lifting assembly 2, docking rail 4, etc.).

[0095] Optionally, the adjustment mechanism also includes a support block 1033, wherein the support block 1033 and the adjustment plate 102 can be integrally formed and fixed together, or it can be configured as two components, the support block 1033 and the adjustment plate 102, which are fixed together by bolts or other fasteners.

[0096] Optionally, a support plate 1031 is installed below the suspension beam of the frame body 101 as a support. For example, the support plate 1031 is connected to the bottom of the suspension beam, serving as an integral support component to lift the adjusting plate 102. Each adjustment mechanism 103 can use a screw to achieve a height adjustment structure, wherein the support plate is threadedly connected to the adjusting threaded rod (i.e., adjusting screw 1032), and the upper part of the adjusting screw 1032 is engaged in the slot of the support block 1033. Therefore, when rotating each adjusting screw 1032, the up and down movement of different screws drives the corresponding positions of the adjusting plate 102 to perform the same / different height movements, thereby realizing the height and / or horizontal adjustment of the adjusting plate 102. This satisfies the requirements of an adjustable ceiling installation structure that can also compress the space above, making it easier to leave installation space for related mechanical structures and better connect with the height of existing track systems in the factory workshop. Moreover, the up and down adjustment through multiple adjusting screws 1032 supports and threads ensures both the strength of the support and the adjustability of the support plate.

[0097] Optionally, a first annular boss and a rotating mating part are provided sequentially from bottom to top on the upper part of the adjusting screw 1032. The support block is sleeved on the outside of the rotating mating part on the adjusting screw. The outer diameter of the first annular boss is larger than the outer diameter of the rotating mating part, so as to form a step at the junction of the first annular boss and the rotating mating part. The upper end face of the first annular boss abuts against the lower side of the support block to support the adjusting plate.

[0098] Optionally, the upper part of the adjusting screw is provided with a second annular boss above the rotating mating part. The outer diameter of the second annular boss is larger than the outer diameter of the rotating mating part, so as to form another step at the junction of the second annular boss and the rotating mating part. The lower end face of the second annular boss is used to block the upper side of the support block.

[0099] Optionally, the support block is provided with an opening, into which the rotating engagement part of the adjusting screw is inserted from the side.

[0100] Optionally, the two hanging beams of the frame body 101 are connected to each other by rigid corner brackets 1012 to form an integral frame. Furthermore, the frame body 101 can be fixed to the underside of the ceiling using fasteners 1011.

[0101] Optionally, the fixed connection between the fastener 1011 and the corner piece 1012 and the lifting beam can be a locking connection using a track locking member 1013. The lifting beam has a trapezoidal groove, into which the track locking member 1013 can be pre-embedded. This allows for quick adjustment of the installation position based on the corresponding fixed positions of the fastener 1011 and the corner piece 1012 within the lifting beam, locking the fastener 1011, corner piece 1012, etc., onto the lifting beam. The locking structure can be found in [reference needed]. Figure 15 The schematic structural shape.

[0102] Optionally, the support plate 1031 is provided with a plurality of track connecting blocks 10311, wherein the track connecting blocks 10311 are embedded in the grooves in the suspension beam, so that after being embedded in the grooves, the support plate 1031 and the frame body 101 can be quickly locked together by adjusting the position.

[0103] Optionally, the ceiling mounting assembly 1 is further provided with a plurality of first hoisting assemblies 104. One end of the first hoisting assembly 104 is fixedly connected to the lower surface of the adjusting plate 102, and the other end of the first hoisting assembly 104 is used to cooperate with the lifting platform assembly 3 in the OHT suspended lifting system. The height of the first hoisting assembly 104 is not less than the height of the wireless power take-off device 302 in the lifting platform assembly 3.

[0104] In some examples, the first lifting assembly 104 may be a pin alignment and self-locking device, for example, when the aforementioned Figure 1 When the illustrated lifting platform assembly rises to the preset height, it completes guidance and locking via alignment using the four corner pins. (Reference) Figure 18 and Figure 19 As shown, the pin 301 of the lifting platform assembly 3 is connected to the first hoisting assembly 104, and the height of the first hoisting assembly 104 is not less than the height of the wireless power supply 302. Thus, the connection between the first hoisting assembly 104 and the lifting platform assembly 3 can not only achieve alignment and locking, but also provide corresponding installation space for the wireless power supply 302. This is beneficial for deploying and applying the wireless power supply 302 in the lifting platform assembly 3 for working power supply, and further helps to save space occupied by the OHT suspended lifting system.

[0105] Optionally, the ceiling mounting assembly 1 may also include several second hoisting assemblies 108, wherein the second hoisting assemblies 108 are fixedly connected to the lifting beams of the frame body 101. In this case, the second hoisting assemblies 108 can be used to suspend and install the aforementioned overhead electrical cabinet 5 (see the aforementioned...). Figure 1 (Illustrative image) This design facilitates the installation of the appliance cabinet and saves hanging space.

[0106] Optionally, such as Figures 16 to 19 This illustrates that after the second hoisting component 108 is used to suspend the overhead electrical cabinet 5, the cable of the overhead electrical cabinet 5 can be led out to the space below the adjustment plate 102 to achieve a wireless power supply solution.

[0107] In one example, the ceiling mounting assembly 1 is also equipped with a wireless power supply assembly 106, which is fixed and supported by several fixed brackets 1062. The fixed brackets 1062 are located on the lower surface of the adjustment plate 102 and support the cable 1061 that provides wireless power to the electrical control box, so that the wireless power supply device (not shown in the figure) in the OHT suspended lifting system can wirelessly draw power from the cable 1061.

[0108] In one example, reference Figure 8 , Figures 16 to 18 The diagram shows that the wireless power supply circuit (i.e., the power supply circuit formed by cable 1061) is deployed on the lower surface of the ceiling mounting component 1. Then, a corresponding wireless power collector 302 is configured on the lifting platform component 3. When the lifting platform component rises to the track overlap section (i.e., the docking stage), wireless power can be obtained through the wireless power collector and the power supply circuit. Then, the power collector 303 converts the obtained electrical energy into working power.

[0109] In one example, reference Figure 19 As illustrated, the wireless power supply circuit (i.e., the power supply circuit formed by cable 1061) is deployed in the space below the ceiling mounting component 1, and then a corresponding wireless power supply device 302 is configured in the space on the outer side of the lifting platform component 3. At this time, wireless power supply can be achieved when docking with tracks at different heights. It should be noted that the cable 1061 can be laid vertically, which can achieve continuous power supply within a certain lifting range.

[0110] Therefore, by utilizing the limited space under the ceiling-mounted components, only one wireless power supply circuit needs to be laid out, and a miniaturized power collector can be used to wirelessly draw power from this circuit. This significantly reduces the structure and size of the power collection device, which is very beneficial for the deployment and application of power collection solutions when using the OHT suspended lifting system.

[0111] In some implementations, referencing the power supply scheme in the operating track, a mature E-type pickup (such as an E-type pickup coil) can be used as the core component of the power supply unit. This is beneficial for ensuring power supply performance and reducing space occupation. In addition, using mature components also helps to ensure reliability and safety.

[0112] In some implementations, considering the limited space between the ceiling and the OHT suspended lifting system, a flat power collection box 303 is used. By flattening, the power collection part occupies less space and height, which is more conducive to the deployment and application of wireless power collection components in the system.

[0113] In one example, the cable 1061 providing wireless power can be supported and installed using a cable shielding conduit 105. The cable shielding conduit 105 can be specifically laid out according to the space constraints below the adjustment plate 102, and the cable shielding conduit 105 is set on the lower surface of the adjustment plate 102 by several support members 1051. The cable shielding conduit 105 can be a conduit capable of shielding electromagnetic signals, thereby enabling quantified shielding of electromagnetic signals emitted by the cable 1061 from the electrical control box to the wireless power generator.

[0114] Additionally, the power source may have an open coupling groove that allows the wireless power supply cable to be embedded and draw power from the cable 1061 supplying power from the ceiling-mounted assembly without contact. Moreover, the accommodating space of the frame body 101 in the area below the adjustment plate 102 can accommodate at least part of the power source, making the structure more compact and easier to deploy the wireless power supply device under the ceiling.

[0115] Alternatively, the detector and the baffle can be used together to detect the results and achieve wireless power supply.

[0116] In one example, such as Figures 20 to 23 As illustrated, the ceiling mounting assembly 1 also includes several detection components 109, which are positioned below the adjusting plate 102 to detect and control the lifting process of the OHT suspended lifting system. Specifically, two sets of detection components 109 are positioned directly opposite the lifting platform assembly 3 of the OHT suspended lifting system.

[0117] Preferably, the detection component 109 may include a first detection end 1091 and a second detection end 1092, wherein the first detection end 1091 is installed on the lower surface of the adjustment plate 102, and the second detection end 1092 is installed on the lifting platform component 3 of the OHT suspended lifting system so as to follow the lifting platform up or down, thereby completing the main position detection of the lifting through the cooperation between the first detection end and the second detection end.

[0118] In one example, the first detection end 1091 of the detection assembly 109 employs three detectors: a first detector 10911, a second detector 10912, and a third detector 10913. The first detection end 1091 is mounted on the lower surface of the adjustment plate 102. The second detection end 1092 of the detection assembly 109 uses baffles at different positions to block the detection signal in conjunction with the photoelectric detector, such as the first baffle, the second baffle, and the third baffle. These baffles are mounted on the lifting platform of the OHT suspended lifting system. Therefore, photoelectric detectors are preferred, so that the baffles and photoelectric detectors work together to complete the detection.

[0119] Preferably, such as Figures 20 to 22As shown, the same baffle structure 10921 can be used to achieve the functions of the first baffle, the second baffle, and the third baffle by setting different height positions of the baffle structure 10921, thereby further reducing the space occupation. The mounting base 10922 is used for connection with the lifting platform assembly 3.

[0120] Therefore, the detection process is illustrated as follows: When the lifting platform of the OHT suspended lifting system rises towards the ceiling, the first baffle first cooperates with the first detector 10911 to detect that the lifting platform is about to approach the ceiling, which can prepare for wireless power supply; if the lifting platform continues to rise, the second baffle cooperates with the second detector 10912 to detect that the lifting platform has entered the range where wireless power can be supplied, and wireless power supply operation can be performed; if the lifting platform continues to rise, the third baffle cooperates with the third detector 10913 to detect that the lifting platform has risen to the limit state, and can stop rising, thereby providing continuous power supply for wireless power supply and realizing stable and reliable wireless power supply.

[0121] When the lifting platform descends from the ceiling, the corresponding operation (such as disconnecting the wireless power supply) can also be completed through the cooperation between the detector and the baffle, which will not be explained further.

[0122] In one example, the ceiling mounting assembly 1 is also provided with several limit detection components 107 (which can be in the form of sensors), such as lateral limit detection component 1071, longitudinal limit detection component 1072, etc. These limit components are set on the lower surface of the adjustment plate 102, so that the limit position of the OHT suspended lifting system can be detected through these limit components.

[0123] In practice, the lateral limit detection component 1071 detects whether the two traveling devices of the OHT trolley have reached the corresponding positions, thereby roughly determining whether the lifting platform component 3 has reached the corresponding position. The longitudinal limit detection component 1072 can roughly detect whether the thickness of the belt wound by the winding drum of the flexible belt in the lifting component 2 is in place. For example, during the ascent, the flexible belt is gradually wound onto the winding drum. At this time, the winding drum with the synchronous belt becomes thicker and its outer diameter gradually increases. Thus, the position of the longitudinal limit detection component 1072 can be set to correspond to the position where the belt is about to be wound in place (becoming thicker and reaching the point of blocking the signal).

[0124] In some implementations, reference Figure 8 Combination Figure 23As can be seen, a radar sensor 110 can be used in various embodiments. The radar sensor 110 is disposed on the lower surface of the adjustment plate 102. When the lifting platform assembly is lifting, the radar sensor 110 can be used to detect dynamic targets in the preset work area (i.e., the work area), such as whether personnel have entered. When a preset target is detected to have entered the work area, a stop operation signal or an alarm signal is issued.

[0125] In some embodiments, the present specification proposes a miniaturized and flattened lifting assembly 2. By adopting a miniaturized lifting assembly, the installation height requirements of the OHT suspended lifting system are further reduced, making it easier for the OHT suspended lifting system to adapt to various installation height deployments.

[0126] The design concept of lifting assembly 2 is as follows: It employs two rotating shafts, a winding shaft and a lifting shaft, to respectively achieve belt winding and auxiliary synchronous support. The lifting shaft is equipped with a synchronous pulley, which engages independently with the belt for synchronization and support during winding, thus supporting the lifting object (lifting platform) connected below the belt. The winding shaft is equipped with a belt winding drum, which rotates to retract or release the belt. The two shafts are decoupled in their support and winding functions, and work together to achieve lifting. Furthermore, the engagement of the synchronous pulley with the belt provides support, ensuring that the relatively large load of the entire lifting platform and trolley is stably supported and rotated for lifting.

[0127] Therefore, using two shafts for belt winding and synchronous support not only helps reduce the space occupied by the components, but also greatly facilitates the flexible arrangement and installation of the overall structure according to the layout space under the ceiling.

[0128] like Figures 24 to 28 As illustrated, the lifting assembly 2 is mounted on the ceiling mounting assembly, and the mounting space below the ceiling mounting assembly accommodates at least a portion of the lifting assembly. The lifting assembly 2 includes: at least one drive mechanism, a belt lifting mechanism, a belt retraction mechanism, and a belt assembly.

[0129] like Figure 24 The belt lifting mechanism has a first rotating shaft (referred to as lifting shaft 212 in this specification) and at least one synchronous pulley 2022 arranged axially along the first rotating shaft; the belt winding mechanism has a second rotating shaft (referred to as winding shaft 208 in this specification) and at least one winding section (referred to as winding drum 210 in this specification) arranged axially along the second rotating shaft; the belt assembly includes at least one belt, such as the first flexible belt 2091 and the second flexible belt 2092 shown in the figure. The number of belts is not limited in this application, or may be modified to be one or more.

[0130] The connection of the belts in the assembly is illustrated as follows: the first flexible belt 2091 passes around the synchronous pulley 2022, and one end of the belt is connected to the winding drum 210. The belt engages with the synchronous pulley to form a wrap angle, allowing the belt to be supported by the pulley. The other end of the belt connects to the lifting object (such as the aforementioned...). Figure 1 The lifting platform component 3) is connected as shown in the diagram.

[0131] Diagram illustrating the belt winding process within the assembly:

[0132] The lifting shaft 212 (i.e. the first rotating shaft) is configured to be driven by the aforementioned drive mechanism to rotate the synchronous pulley on the first rotating shaft. Thus, under the engagement of the belt and the synchronous pulley, the belt synchronously follows the rotation of the synchronous pulley to lift or lower the object.

[0133] The take-up shaft 208 (i.e., the second rotating shaft) is configured to be driven by the drive mechanism to rotate the take-up portion on the second rotating shaft, so that when the belt is connected to the take-up drum, the take-up drum connected to the belt rotates to perform a take-up or release operation on the belt.

[0134] It should be noted that there can be one or more drive mechanisms. For example, there can be two drive mechanisms, one of which drives one shaft; or there can be a drive mechanism in which a power mechanism drives two shafts synchronously via a transmission mechanism. The following is a schematic illustration of a scheme in which a power mechanism drives two shafts synchronously via a transmission mechanism.

[0135] The design concept is as follows: the power mechanism uses a miniaturized servo motor combined with a reducer to provide power, which helps to reduce the space occupied by the power mechanism in the air; moreover, the power mechanism drives the transmission component in a way similar to gear transmission, and the transmission component drives the winding drum to rotate through gear transmission. When the winding drum is winding and unwinding the first flexible belt and the second flexible belt, the transmission component synchronously pulls and tensions the first flexible belt and the second flexible belt through gear transmission.

[0136] like Figures 24 to 28 The power mechanism includes a servo motor 214 and a reducer 215, and the transmission mechanism includes a transmission assembly, a pulley assembly 206, and a take-up drum 210. The servo motor 214 is connected to the reducer 215, the reducer 215 is connected to the power input end of the transmission assembly, and the power output end of the transmission assembly is connected to the take-up drum 210.

[0137] In practice, the power mechanism and the transmission mechanism in the above example can be arranged along the length of the air track or along the width of the air track.

[0138] Alternatively, considering that the height of the overhead track from the ceiling may vary in different workshops, a structural example that can adapt to deployments at various heights is provided below.

[0139] In one example, the servo motor 214, reducer 215, transmission assembly, and take-up drum 210 are all located inside the component installation space and on the first outer side directly above the overhead track. The wheel assembly 206 is located inside the component installation space and on the second outer side directly above the overhead track. Therefore, the transmission assembly, power assembly, take-up drum, etc., which require a certain height, are all arranged on the outer side of the space directly above the track, without affecting the space directly above the track. This further reduces the height of the lifting assembly 2 and makes it less susceptible to limitations imposed by the installation height below the ceiling.

[0140] In implementation, the servo motor 214 is connected to the reducer 215, and the reducer 215 is connected to the first gear mechanism 201 in the transmission assembly. It should be noted that the servo motor 214 can preferably be a servo motor with a brake, which, when combined with the reducer 215, can prevent the motor from reversing after power failure.

[0141] During implementation, when deploying the aforementioned applications... Figure 1 In the schematic OHT suspended lifting system, the transmission capacity of the aforementioned transmission components can be adaptively expanded according to the number of belts used between the lifting assembly 2 and the lifting platform assembly 3. For example, if four belts are required, a dual-shaft structure of lifting shaft and winding shaft is adopted. The lifting shaft has synchronous pulleys at both ends, and the winding shaft has winding drums at both ends. Each of the four belts passes around the corresponding synchronous pulley 2022 in a one-to-one manner, and one end of each belt is connected to each winding drum 210 in the four winding sections in a one-to-one manner. The two pulley assemblies 206 are set at a preset distance from the lifting shaft 212 in the horizontal direction to facilitate... The arrangement and installation of the pulley assembly 206 are based on the connection requirements of the lifting object. Two belts are connected at intervals to one horizontal end of the lifting object (i.e., the lifting platform assembly 3); the other two belts are also connected at intervals to the other horizontal end of the lifting object. Each of the other two belts passes around a corresponding pulley assembly and then meshes with a corresponding synchronous pulley. At this time, the second gear mechanism 202 and the third gear mechanism 203 drive the lifting shaft and the winding shaft through corresponding transmission shafts, causing the corresponding synchronous pulleys and winding drum to rotate and complete the synchronous winding and unwinding of the four belts. Therefore, using the same set of transmission components can expand to include the required number of belt winding and unwinding transmission mechanisms.

[0142] refer to Figures 24 to 28The diagram illustrates that the servo motor 214 outputs power to the reducer 215, which drives the first gear mechanism 201 to rotate. The gears of the first gear mechanism 201 simultaneously mesh with the gears of the second gear mechanism 202 and the third gear mechanism 203 to complete synchronous transmission. Firstly, the rotation of the gears in the second gear mechanism 202 drives the lifting shaft 212 to rotate. The rotation of the lifting shaft 212 then drives the synchronous pulley to rotate. The synchronous pulley synchronously pulls and tensions the first flexible belt 2091 and the second flexible belt 2092, assisting the take-up drum 210 in winding and unwinding the belts to complete the winding process. Secondly, the rotation of the gears in the third gear mechanism 203 drives the take-up shaft 208 to rotate. The rotation of the take-up shaft 208 then drives the take-up drum 210 to rotate synchronously. The rotation of the take-up drum 210 enables the synchronous winding and unwinding of the first flexible belt 2091 and the second flexible belt 2092 to complete the winding process.

[0143] In some examples, when deploying applications to the aforementioned Figure 1 In the schematic OHT suspended lifting system, the drive shafts (such as the lifting shaft 212 and the winding shaft 208) can be arranged along the length of the track, depending on the available installation space between the space above the track and the ceiling mounting assembly 1. That is, the core power and transmission components of the lifting assembly 2 are located on the lower surface of the ceiling mounting assembly 1 and on one side of the track width, thereby reducing the space occupied by these components above the track and greatly facilitating the deployment and application of the lifting assembly 2. Specifically, the first flexible belt 2091 connects downwards to the first side belt hoisting component of the lifting platform assembly 3 after passing through the pulley assembly 206, while the second flexible belt 2092 connects directly downwards from the synchronous pulley to the second side belt hoisting component of the lifting platform assembly 3.

[0144] In some embodiments, the winding drum 210 is provided with a blocking structure at the middle and both ends. The depth of the blocking structure is not less than the total thickness of the belt after it is wound up, so that the first flexible belt 2091 and the second flexible belt 2092 are always wound in the winding cavity formed by the blocking structure, so as to ensure the accuracy of belt winding and improve the accuracy of belt winding and unwinding.

[0145] refer to Figure 26 The winding drum 210 is provided with a first blocking part 2101, a second blocking part 2102 and a third blocking part 2103 in sequence. The first blocking part 2101 and the second blocking part 2102 form a winding cavity for the second flexible belt 2092, and the second blocking part 2102 and the third blocking part 2103 form a winding cavity for the first flexible belt 2091.

[0146] In some implementations, given that the OHT suspended lifting system is not used frequently, i.e., the lifting platform assembly 3 usually needs to be retracted inside the OHT suspended lifting system for a long time, a corresponding power failure brake can be installed on the drive shaft of the winding drum 210.

[0147] refer to Figures 24 to 28 As shown, a power failure brake 211 is installed at one end of the take-up shaft 208. When the take-up drum 210 is winding up and unwinding the belt, the power failure brake 211 can be in an energized state without braking. When the take-up drum 210 is no longer winding up and unwinding the belt, the power failure brake 211 can be in a de-energized state, thereby completing the braking of the take-up drum 210 and preventing the lifting platform assembly 3 from falling due to the take-up drum 210 being unable to maintain the belt winding state.

[0148] This description provides a miniaturized hoisting drive assembly (i.e., a drive assembly) that serves as the power source for a lifting assembly.

[0149] like Figures 24 to 28 The design concept of the transmission scheme is as follows: A gear-like transmission method is used to form the overall transmission structure. The first gear mechanism 201 provides the transmission power and can be driven by a motor. The second gear mechanism 202 and the belt tensioning mechanism 204 (e.g., a first tensioning wheel 2041 and a second tensioning wheel 2042 in the form of tensioning wheels) provide auxiliary support for the synchronous winding, unwinding, and tensioning of the first flexible belt 2091 and the second flexible belt 2092. The third gear mechanism 203 drives the winding machine to wind and unwind the belt. Furthermore, the first gear mechanism 201 synchronously drives the second gear mechanism 202 and the third gear mechanism 203 to rotate. The virtual rotation center axes of the gears in the first gear mechanism 201, the second gear mechanism 202, and the third gear mechanism 203 are not on the same straight line, thus achieving a staggered relative position layout for each gear mechanism.

[0150] Therefore, by adopting a gear-like transmission and using different gear transmissions as the power mechanism for belt synchronization and winding, and by staggering the arrangement of each gear mechanism to facilitate the use of miniaturized gear mechanisms, the transmission mechanism is not limited by height, which is conducive to flexible deployment and application in the very narrow space inside the above-mentioned OHT suspended lifting system. Moreover, by transmitting power through the meshing of gears, it is very easy to control the synchronization of the belt.

[0151] Furthermore, by setting a belt tensioning mechanism 204 at a designated location, such as setting a second tensioning wheel 2042 slightly to the right below the synchronizing pulley of the second gear mechanism 202, the direction of the belt is changed. This not only tightens the back of the belt to increase the meshing degree between the belt and the synchronizing pulley, but also ensures that the wrap angle between the belt and the synchronizing pulley of the second gear mechanism 202 is large (e.g., the wrap angle is not less than a preset angle), thereby increasing the contact area between the synchronizing pulley and the belt. This assists in synchronization while also providing belt tension. It should be noted that a first tensioning wheel 2041 can be set at a designated location (e.g., slightly below and to the left of the synchronizing pulley of the second gear mechanism 202) to further tighten the back of the belt, which helps increase the meshing degree between the belt and the synchronizing pulley. Therefore, even if the second gear mechanism 202 is designed to be smaller, it can still provide good synchronization assistance and tension performance for the belt.

[0152] By adopting a new transmission method and a new structure for the synchronization and clamping auxiliary mechanism, a transmission component that is not limited by height and occupies very little space can be implemented in the OHT suspended lifting system. Moreover, the belt can be synchronously pulled and tensioned to achieve accurate belt winding and unwinding.

[0153] In specific implementation, the hoisting transmission assembly includes: a first gear mechanism 201, a second gear mechanism 202, a belt tensioning mechanism 204, and a third gear mechanism 203. The first gear mechanism 201, second gear mechanism 202, and third gear mechanism 203 constitute a miniaturized and height-unrestricted novel power transmission structure similar to gear transmission. Specifically, the first gear mechanism 201 provides transmission power, the second gear mechanism 202 is connected to the first gear mechanism 201 via gear transmission, and the third gear mechanism 203 is connected to the first gear mechanism via gear transmission. Thus, the first gear mechanism 201 synchronously drives the second gear mechanism 202 and the third gear mechanism 203. The wheel mechanism 203 and the belt tensioning mechanism 204 are located at designated positions near the synchronous pulley of the second gear mechanism 202. They are used to change the direction of the first flexible belt 2091 and the second flexible belt 2092, and to press and form a specified wrap angle during the synchronous winding and unwinding of the first flexible belt 2091 and the second flexible belt 2092. The third gear mechanism 203 is used to drive the winding drum to wind and unwind the first flexible belt 2091 and the second flexible belt 2092. The tensioning mechanism 204 is used to change the belt routing and press the belt to obtain the wrap angle and tension of the belt during synchronous winding and unwinding, thereby realizing the synchronous winding and unwinding and tensioning of the belt to ensure accurate winding and unwinding of the belt.

[0154] The first gear mechanism 201 can be driven by a power mechanism (such as a motor), thereby obtaining transmission power through the drive of the power mechanism. It should be noted that the power mechanism driving the first gear mechanism 201 can adopt a drive method in which a servo motor 214 with a brake is combined with a reducer 215 for power supply and output. The power is output after passing through the reducer, which can prevent the motor from reversing after power failure.

[0155] In a specific implementation, a synchronous pulley is provided in the second gear mechanism 202. After meshing with the belt, the synchronous pulley can be used to provide support for the belt after synchronous meshing during the winding and unwinding of the first flexible belt 2091 and the second flexible belt 2092. That is, under the synchronous transmission drive of the first gear mechanism 201, when the winding drum 210 winds up or lowers the belt, the synchronous pulley simultaneously tensions the belt synchronously, so that the belt can always maintain a taut state.

[0156] The virtual rotation center axes of the gears in the first gear mechanism 201, the second gear mechanism 202, and the third gear mechanism 203 are not on the same straight line, thereby enabling the relative positions of each gear mechanism to be staggered to adapt to the working environment with limited installation space along the height direction.

[0157] In a specific implementation, the third gear mechanism 203 that drives the winding drum 210 to wind and unwind the belt can be set on one side of the first gear mechanism 201 and slightly below it, while the second gear mechanism 202 that drives the synchronous pulley to synchronously pull the belt can be set on the other side of the first gear mechanism 201.

[0158] The belt tensioning mechanism 204 redirects and tightens the belt between the synchronous pulley and the take-up drum 210, thereby achieving the required tension and wrap angle for belt rotation. It should be noted that the wrap angle refers to the central angle subtended by the contact arc between the belt and the pulley (such as the synchronous pulley or take-up drum). The size of the wrap angle reflects the length of the contact arc between the belt and the pulley's circular surface. By forming a specific wrap angle (i.e., the contact arc), the frictional force generated between the contact surfaces always meets the rotation requirements. Furthermore, by setting the wrap angle, the transmission torque can be flexibly adjusted to a certain extent.

[0159] It should be noted that components such as the first gear mechanism 201, the second gear mechanism 202, the belt tensioning mechanism 204, and the third gear mechanism 203 can be transmitted, installed, and fixed through corresponding transmission shafts, support bearings, support seats, and other structures. Furthermore, these components can be installed on the lower surface of the ceiling mounting assembly 1 through fasteners.

[0160] Additionally, refer to Figure 25As shown, the shafts of the gears in each gear mechanism are fixedly connected to the fixed plate 216, and the corresponding gear transmission is connected. Then the fixed plate 216 is suspended and fixed on the lower surface of the ceiling mounting assembly 1. Other transmission shafts, support bearings, etc. are also installed on the lower surface of the ceiling mounting assembly 1 through corresponding fasteners.

[0161] Therefore, the belt tensioning mechanism, combined with the staggered layout of each gear mechanism, can meet the requirements of synchronous belt rotation and tensioning. Moreover, each gear mechanism can be a miniaturized gear mechanism, so the transmission mechanism is relatively small in height, which can adapt to the working environment with limited installation space along the height direction.

[0162] In some embodiments, in the structure where the third gear mechanism 203 drives the take-up drum 210, a clutch mechanism can be added to change the torque transmitted from the third gear mechanism 203 to the take-up drum 210. This allows for flexible adjustment of the transmission torque based on the required tension during belt rotation in practical applications. This satisfies the need for the belt to maintain appropriate tension while allowing the tension to be flexibly adjusted according to the actual belt requirements, preventing the actual belt from being under excessive tension and affecting belt performance (such as reliability, take-up and take-down accuracy).

[0163] refer to Figures 24 to 28 As illustrated, the hoisting drive assembly also includes a clutch 207. (Reference) Figure 24 As shown, a clutch 207 is provided on the take-up shaft 208, which can control the lifting shaft 212 and the take-up shaft 208 to rotate synchronously with the same angular velocity.

[0164] Clutches are used in the following control processes:

[0165] During the winding of the belt, when the torque transmitted by the clutch is greater than or equal to the cutting threshold, the transmission connection between the transmission assembly and the second rotating shaft is disconnected; when the torque transmitted by the clutch is less than the cutting threshold, the transmission connection between the transmission assembly and the second rotating shaft is engaged.

[0166] During the release of the belt, the transmission connection between the transmission assembly and the second rotating shaft is engaged, or the transmission connection between the transmission assembly and the second rotating shaft is disengaged.

[0167] Alternatively, a PLC control unit (not shown in the figure) can be used to reliably control the clutch. The clutch 207 is electrically connected to the PLC control unit and is positioned between the third gear mechanism 203 and the take-up drum 210. Therefore, the PLC control unit can flexibly set the transmission torque of the clutch 207 via electrical connection. This allows the clutch 207 to preset the target torque for the third gear mechanism 203 driving the take-up drum 210, ensuring that the tension in the belt winding and unwinding process of the take-up drum 210 is always appropriate—neither pulling the belt too forcefully nor pulling it too loosely—thus improving the accuracy of belt winding and unwinding.

[0168] Optionally, the clutch 207 is preferably a magnetic powder clutch. In this case, the PLC control unit can flexibly set the transmission torque of the magnetic powder clutch by adjusting the excitation current of the magnetic powder clutch, so that the first flexible belt and the second flexible belt are in a tensioned state during the winding and unwinding process.

[0169] In one example, as more and more belts are wound up, the drum diameter increases, and the transmission speed remains constant, the winding belt will be under tension. To prevent the timing belt from being overstretched, the magnetic powder clutch can be configured to perform the following action: during the winding process of the first flexible belt 2091 and the second flexible belt 2092 on the winding drum 210, when the tension torque exceeds the torque value set by the magnetic powder clutch, the magnetic powder clutch interrupts the torque transmission to prevent overstretching of the first flexible belt 2091 and the second flexible belt 2092. Therefore, by using the magnetic powder clutch, the belt can always be tensioned to a suitable level without being overstretched, which not only ensures accurate winding and unwinding but also extends belt life and reliability.

[0170] Furthermore, when the pulling torque is less than the torque value set by the magnetic powder clutch, the magnetic powder clutch retransmits the torque, that is, it continues to transmit the target torque transmitted from the third gear mechanism 203 to the take-up drum 210, so that the winding force and tension of the first flexible belt 2091 and the second flexible belt 2092 located at the take-up drum 210, the synchronous pulley, etc. are consistent, so that they are neither over-tensioned nor slack.

[0171] Therefore, when the pulling torque exceeds the set torque value of the magnetic powder clutch, the magnetic powder clutch will slip, thus interrupting torque transmission. However, when the belt is no longer under tension and may begin to slack off, the pulling torque will fall below the set torque value of the magnetic powder clutch. At this point, the magnetic powder clutch will resume torque transmission, ensuring that the belt winding force and belt tension remain consistent, thus maintaining the belt at a suitable tension.

[0172] In one example, during the process of lowering the first flexible belt 2091 and the second flexible belt 2092 (for example, when the belts are about to be lowered into place), the torque transmission can be interrupted by the magnetic powder clutch. At this time, the first flexible belt and the second flexible belt are always in the synchronous pulling process of the second gear mechanism 202. Therefore, by controlling the magnetic powder clutch to interrupt the power transmission through PLC, over-winding can be prevented, ensuring that the belt has a certain tension and is in a suitable tightening state.

[0173] In some implementations, the belt tensioning mechanism 204 can be configured with multiple tensioning structures to achieve tensioning and reversal during the synchronous rotation of the belt, according to the needs of the wrap angle, tension, etc., so that the belt can always be tensioned to an appropriate degree during the winding and unwinding process.

[0174] Referring to the above Figures 24 to 28 The belt tensioning mechanism 204 may include a first tensioning wheel 2041 and a second tensioning wheel 2042. The first tensioning wheel 2041 and the second tensioning wheel 2042 are respectively arranged parallel to the synchronous wheel in the second gear mechanism 202 (i.e., the axis of the tensioning wheel is parallel to that of the synchronous wheel). The first tensioning wheel 2041 is used to synchronously press the first flexible belt 2091 and the second flexible belt 2092 onto the synchronous wheel. That is, the tensioning wheel presses the belt surface, which can both ensure the wrap angle and increase the meshing degree between the belt and the synchronous wheel. Furthermore, the second pressure roller 2042 is used to change the movement direction of the first flexible belt 2091 and the second flexible belt 2092 from the synchronous pulley to the winding drum 210. At this time, when the synchronous pulley synchronously winds up and unwinds the first flexible belt and the second flexible belt, a good pressure effect can be obtained, and a wrap angle of a suitable specified angle can be formed under the pressure action. By setting the position of the pressure roller, a suitable degree of pressure and wrap angle can be obtained, which can ensure that the belt is always tensioned at a suitable level during the winding process.

[0175] In some examples, the hoisting drive assembly also includes triangular mounting members 217 disposed at both ends of the belt tensioning mechanism 204. The first tensioning wheel 2041 and the second tensioning wheel 2042 are rotatably mounted on the triangular mounting members 217, and the synchronizing wheel of the second gear mechanism 202 is simultaneously mounted in the triangular mounting members 217 via bearings. This mounting member not only fixes the relative position between the tensioning wheel and the synchronizing wheel, which is beneficial to increasing the tensioning stability and effect, but also allows the tensioning wheel, synchronizing wheel and other components to be fixedly mounted on the lower surface of the canopy assembly 1. This makes it very convenient to install and fix auxiliary components such as synchronous rotation and tensioning, avoiding limitations caused by installation space.

[0176] In some examples, reference Figures 24 to 28The diagram illustrates that a flange structure is provided in the middle of the synchronous pulley, with the height of the flange structure being greater than the thickness of the first and second flexible belts. When the belts are placed in the synchronous pulley, this flange structure and the triangular mounting member 217 form a recessed cavity for the belts, thus confining the belts within the recessed cavity of the synchronous pulley. Furthermore, corresponding recessed grooves, corresponding to the flange structure of the synchronous pulley, are provided in the middle of the first and second pressure rollers 2041 and 2042, further pressing the first and second flexible belts onto the synchronous pulley, allowing the synchronous pulley to synchronously pull and tension the belts.

[0177] In one example, a corresponding baffle 205 can be provided to protect the belt section that is being redirected, preventing foreign objects from entering between the timing pulley and the pressure pulley and affecting belt rotation. The baffle 205 is fixedly mounted on the triangular mounting member 217.

[0178] In any of the aforementioned examples, the flexible belts (i.e., the first flexible belt and the second flexible belt) are preferably steel wire synchronous belts, which can fully utilize the excellent characteristics of steel wire synchronous belts to enhance the synchronous pulling, twisting, tensioning and other effects during belt winding and unwinding.

[0179] In some implementations, although the lifting platform assembly 3 cannot provide power and the internal space of the lifting platform assembly 3 is very limited, the sides of the lifting platform (such as the outer side of the track), even if the space in the width direction is very limited, can still be utilized. Moreover, the narrow spaces in the height, length, and other directions can be utilized to form useful installation space. Therefore, if the OHT trolley (i.e., the OHT trolley that stays inside the lifting platform) can be combined, for example, the space between the front and rear sets of travel wheels on the same side of the OHT trolley can be used to lock the OHT trolley in the lifting platform. For example, by using flat or miniaturized locking and unlocking components, the two sets of travel wheels of the OHT trolley can be blocked, so that the travel wheels cannot move on the track.

[0180] Additionally, there is some space below the ceiling where the lifting platform is installed. Although this space is very narrow in the vertical direction, if a trigger mechanism is installed in this narrow space below the ceiling, the locking mechanism can automatically unlock when the lifting platform rises to the preset position (i.e., the position where it connects to the overhead track). Unlocking at this point does not require a power source. Of course, when the lifting platform begins to descend away from the preset position (i.e., the position where it connects to the overhead track), the locking mechanism automatically returns to its locking state because the trigger mechanism disengages from the locking mechanism, providing locking functionality for the OHT trolley.

[0181] Therefore, this specification provides a locking and unlocking mechanism that utilizes the narrow first space on the outer side of the lifting platform, i.e., along the parking track in the height and length directions, to realize an anti-slip mechanism for locking the OHT trolley inside the lifting platform assembly 3. In the width direction, combined with the second space formed between the OHT trolley and the outer side after the OHT trolley stops on the parking track, a locking function that can lock the OHT trolley on the parking track is implemented in the second space. Moreover, the unlocking process of the anti-slip mechanism can still be implemented by utilizing the first and second spaces. For example, the locking end enters the second space when locking, and returns from the second space to the first space after unlocking. Therefore, the anti-slip mechanism does not affect the original function of the lifting platform, but it can be implemented in such a narrow space without any power supply.

[0182] In practice, the locking part is located on the side of the lifting platform. When not subjected to external force, the locking part can automatically switch from the unlocking state to the locking state and remain in the locking state; when subjected to external force, it switches from the locking state to the unlocking state and remains in the unlocking state while the external force is maintained; and when the locking part is in the locking state, the locking end of the locking part automatically locks the OHT trolley on the parking rail inside the lifting platform to prevent the OHT trolley from moving on the parking rail inside the lifting platform.

[0183] In addition, the unlocking part and the locking part are located on the same side. The unlocking part is used to trigger the locking part to enter the unlocking working state when the lifting platform rises to the first preset position, so that the locking end of the locking part retracts and unlocks the OHT trolley, allowing the OHT trolley to move on the parking track inside the lifting platform.

[0184] refer to Figures 29 to 33 This specification provides an embodiment of an anti-runaway mechanism for an OHT suspended lifting system. The anti-runaway mechanism 30 may include: a locking part 311 located outside the parking rail 10 of the lifting platform assembly 3, and an unlocking part 312 located on the same side as the locking part 311.

[0185] The locking part 311 is disposed in the space from the bottom of the outer side of the parking rail 10 in the height direction. The locking end of the locking part 311 is used to automatically enter the interior of the lifting platform from the outside of the parking rail 10 when the locking operation is in place, thereby controlling the OHT trolley. Figure 29 , Figure 30 The entire OHT trolley is not shown; only the two sets of wheels 20 of the trolley are shown locked.

[0186] It should be noted that the locking end can be used to lock the traveling wheel assembly 20, or the locking end can be used to lock other parts of the OHT trolley, so that the OHT trolley does not move relative to the parking track 10.

[0187] In addition, the unlocking unit 312 is used to trigger the locking unit 311 to enter the unlocking working state when the lifting platform rises to the preset docking position. This causes the locking end of the locking unit 311 to retract from the inside of the lifting platform to the outside of the parking rail 10 to unlock the OHT trolley. After unlocking, the OHT trolley can move relative to the inside of the lifting platform, thereby enabling the OHT trolley to switch from the parking rail 10 of the lifting platform to the aerial rail that needs to be operated later.

[0188] Furthermore, since the locking part 311 does not require a power supply, therefore, in the aforementioned Figure 1 In the illustrated scenario, when the lifting platform descends to a preset position where it docks with the ground platform track 7, the locking part 311 can be manually reversed to unlock the locking state, facilitating the OHT trolley's entry and exit from the parking track 10. Alternatively, a related unlocking component can be installed near the locking part 311, allowing manual unlocking of the locking part 311 via the unlocking component; this is not a limitation here.

[0189] In one example, the locking part 311 may include a mounting base 3111, a blocking block 3112, and a spring-loaded assembly 3113. The mounting base 3111 is fixedly connected to the outside of the parking rail 10, and the spring-loaded assembly 3113 is disposed between the mounting base 3111 and the blocking block 3112.

[0190] In some embodiments, the locking part 311 further includes a guide wheel 3114, wherein the guide wheel 3114 is rotatably connected to the first end of the blocking block 3112. Additionally, the unlocking part 312 has a first inclined groove (see reference) at the portion for contacting the first end of the blocking block 3112. Figure 34 (Illustration)

[0191] In one example, the blocking block 3112 has a hinge portion at one end that is hinged to the mounting base, a first end extending to one side from the hinge portion of the blocking block, and a second end extending to the other side from the hinge portion of the blocking block; correspondingly, the unlocking portion 312 has a contact portion that applies force to the first end of the blocking block; at this time, the first end of the blocking block 3112 is provided with a guide wheel 3114, and the contact portion of the unlocking portion 312 is provided with a first inclined groove that can abut against the guide wheel; wherein, the unlocking portion drives the blocking block to rotate to switch from the locked state to the unlocked state, and the guide wheel can roll relative to the first inclined groove; the virtual rotation center axis of the blocking block extends along the length direction of the parking track.

[0192] In some embodiments, the locking part 311 also includes an adjustment knob 3115, one end of which can be extended through the first side of the mounting base 3111 after manual adjustment. In this case, the adjustment knob 3115 can be used for manual operation to unlock the blocking block 3112 after manual adjustment and extension of the mounting base 3111. This makes it very convenient to manually adjust the locking part from the locked state to the unlocked state, and can keep it in the unlocked state to facilitate track switching of the OHT trolley.

[0193] It should be noted that the rebound assembly 3113 may include a torsion spring and a second inclined groove provided in the blocking block 3112. The torsion spring can be placed in the second inclined groove, so that one end of the torsion spring is locked in the blocking block 3112 and the other end of the torsion spring is locked in the mounting base 3111. Therefore, when the blocking block 3112 is acted upon by the unlocking part 312, the blocking block 3112 retracts and the torsion spring is compressed. However, due to the unlocking force of the unlocking part 312 on the locking part 311, the torsion spring remains in a compressed state. Once the blocking block 3112 is no longer acted upon by the unlocking part 312, the torsion spring is no longer compressed, and the locking part automatically returns to the locking working state.

[0194] In one example, the rebound component 3113 can be configured as an elastic component that performs the following actions: when the blocking block is not subjected to a force applied by the unlocking part or externally, it keeps the blocking block in the locked state, or switches the blocking block from the unlocked state to the locked state; when the blocking block is subjected to a force applied by the unlocking part or externally, it generates elastic deformation to provide a driving force to drive the blocking block from the unlocked state to the locked state; wherein: in the locked state, the blocking block is correspondingly located in the locked position that prevents the OHT trolley's traveling wheels from driving out along the parking track; in the unlocked state, the blocking block is located in the unlocked position that does not prevent the OHT trolley's traveling wheels from driving out along the parking track.

[0195] In some embodiments, the unlocking part 312 can be in the form of a cylinder, which can achieve an unlocking part structure with a very small volume, and can be implemented in a very limited installation space. Moreover, by extending or retracting the cylinder, the unlocking part can reliably lock or unlock the locking part.

[0196] Specifically, the unlocking part 312 includes a pressing cylinder 3121 and a pressing plate 3122, wherein the pressing plate 3122 is connected to the pressing cylinder 3121, so that the pressing plate 3122 can reliably perform the pressing action when the cylinder 3121 is pressed down (i.e. extended), and after pressing down, it contacts and triggers the locking part 311. Moreover, the cylinder 3121 is also used to maintain the contact between the pressing plate 3122 and the locking part 311 after the pressing plate 3122 contacts the locking part 311, thus ensuring the reliability of the unlocking state.

[0197] Furthermore, when the lifting platform assembly 3 begins to descend, the downward-pressing cylinder 3121 can retract, and the downward-pressing plate 3122 retracts accordingly. At this time, the first end of the locking part 311 (such as the first end of the aforementioned blocking block 3112) is no longer subjected to downward pressure, and thus relies on the rebound assembly 3113 (such as an elastic assembly in the form of a torsion spring) to reset, that is, automatically return to the locked state, ensuring the reliability and timeliness of the locking state reset. When the lifting platform rises to a fixed position (such as the aforementioned first preset position), the downward-pressing cylinder 3121 performs a downward-pressing action, and the downward-pressing plate 3122 presses down on the locking part 311, causing the second end of the locking part 311 (such as the second end of the aforementioned blocking block 3112) to rise (i.e., be stored in the outer side space of the parking track). Therefore, the locking end responsible for blocking in the locking part can be lifted by lever principle, and the OHT trolley can be released normally.

[0198] In some implementations, the aforementioned examples can be installed with the unlocking unit according to the available space of the lifting platform. The following is a preferred embodiment for the installation of the unlocking unit, which makes full use of the narrow space between the lifting platform and the ceiling, and realizes the installation of the unlocking unit and the unlocking function of the locking unit more simply and reliably.

[0199] Referring to the above Figure 8 This indicates that, in response to the aforementioned Figure 1 As illustrated in the application scenario, in any of the aforementioned embodiments, the locking part 311 can be fixedly connected to the outer side of the parking track of the lifting platform assembly 3, and the unlocking part 312 can be fixedly connected to the lower surface of the ceiling mounting assembly 1.

[0200] In one example, combining the foregoing Figure 8 and Figure 33 As illustrated, the unlocking part 312 (e.g., the cylinder in the aforementioned example) can be installed near the structure of the lifting platform for wireless power supply. The wireless power supply cable 1061 is located on the lower surface of the adjustment plate 102 in the ceiling mounting assembly 1. Since the power supply cable 1061 is a single-wire circuit (i.e., the power supply cable 1061 bends to form a wireless power supply circuit according to the needs of the power source 302), and the unlocking part 312 is a non-electric component, the unlocking part 312 can be installed in the extra space formed by this circuit.

[0201] In some embodiments, this specification proposes an anti-slip docking mechanism to prevent the OHT trolley from slipping on the docking track 4, thereby avoiding the slipping of the OHT trolley temporarily stationary on the docking track 4 during the docking process between the docking track 4 and the lifting platform assembly 3.

[0202] The design concept is as follows: a stop bar to prevent slippage is installed on the docking track side. When the lifting platform assembly in the OHT suspended lifting system rises from below to the docking position, the stop bar is lifted by the lifting platform assembly and retracts from the target track, no longer serving as a barrier on the target track. Conversely, when the lifting platform assembly descends from the docking position, the stop bar descends under its own gravity, forming a barrier on the target track. Therefore, a non-powered barrier structure can be adopted, serving as a barrier on the docking track to prevent slippage by following the rise and fall of the lifting platform assembly 3, without affecting the original docking process between the lifting platform assembly 3 and the docking track 4.

[0203] refer to Figures 34 to 36 As shown, an anti-slip docking mechanism provided in this application includes: a stop bar 352, wherein the first end of the stop bar 352 is connected to the target track 331 and is located on the first end of one side of the target track 331, and the first end of the target track 331 is for docking with the lifting platform assembly 3 in the OHT suspended lifting system (see above). Figure 1 (Illustrative image) One end of the track is used for docking.

[0204] After setting a stop bar 352 on the target track 331, when the lifting platform assembly 3 in the OHT suspension lifting system rises from below to the docking position, the stop bar is lifted by the lifting platform assembly and retracts from the target track into the air, no longer serving as a railing on the target track.

[0205] As the lifting platform assembly descends from the docking position, the guardrail descends along with the lifting platform assembly under its own gravity, thus forming a railing on the target track.

[0206] The docking direction refers to the direction in which the target track docks with the lifting platform component in the OHT suspended lifting system.

[0207] It should be noted that those skilled in the art should understand that two stops 352 can be provided on the target track 331, that is, a corresponding stop 352 is provided on each side of the target track 331, and the two stops 352 form an interlaced railing.

[0208] It should be noted that the docking direction here refers to the direction of track docking from the target track to the lifting platform component in the OHT suspended lifting system.

[0209] In implementation, the barrier structure that functions as a guardrail on the track can take various forms. Specifically, the retraction of the barrier 352 can be either above the track or below it. In other words, by retracting the barrier 352, the surrounding space can be fully utilized, such as the side, above, or even below the track. It should be noted that the barrier 352 is positioned at the interface between the track and the lifting platform. This barrier structure significantly reduces the overall volume occupied by the anti-slip mechanism without affecting the original functions of the track, such as providing parking space for the OHT trolley and allowing the OHT trolley to move between the track and the lifting platform without the barrier obstructing the path.

[0210] Therefore, the anti-slip docking mechanism provided in this application only requires the installation of a lowerable and retractable stop bar on the track. Not only does it require a very small volume, but the mechanism does not affect the functions of the track and the lifting platform, effectively providing a good anti-slip capability for the OHT trolley while it is stationary on the track.

[0211] In some implementations, although the air space between the track and the ceiling is very limited, a railing-type barrier structure can be implemented in this air space. That is, a rod-shaped barrier structure can be adopted, with one end of the barrier movably connected to one side of the track, and the other end of the barrier can freely fall from the space above the track onto the track, or be retracted from the track to the extra space above the track, further reducing the volume occupied by the anti-slip docking mechanism in the air space.

[0212] Specifically, the stop bar 352 may include an L-shaped bar 3521 and a mounting base 3524. The mounting base 3524 is fixedly connected to one side of the target track 331. The first end of the L-shaped bar 3521 is rotatably connected to the mounting base 3524. This rotatable connection allows the second end of the L-shaped bar 3521 to be placed on the other side of the target track 331 based on the first detection result of the detection unit. At this time, a blocking area (e.g., a triangular area) is formed between the L-shaped bar 3521 and the target track 331. This blocking area serves to prevent the aerial transport vehicle from sliding along the docking direction. Additionally, the rotatable connection allows the second end of the L-shaped bar 3522 to be retracted from the target track 331 based on the second detection result of the detection unit. After the L-shaped bar 3522 is retracted, a blocking area is no longer formed between it and the target track. It should be noted that the included angle between the two arms of the L-shaped bar can be a right angle, an obtuse angle, or an acute angle. The specific angle can be determined according to implementation needs and is not limited here.

[0213] In some embodiments, buffer mechanisms can be provided on the stop bar. If the OHT trolley slips, these buffer mechanisms reduce the force on the stop bar, improving the overall safety and reliability of the mechanism and preventing property damage caused by the OHT trolley colliding with the stop bar. Therefore, the stop bar 352 can also include a stop block 3522, which is disposed on the second end of the L-shaped bar 3521, facing in the opposite direction to the docking direction, i.e., towards the OHT trolley stationary on the track. In this case, the stop block 3522 can be used to block the traveling wheels of the aerial transport vehicle.

[0214] In some embodiments, the stop bar 352 may also include a lifting rod 3523 disposed at a preset position on the L-shaped rod 3521, with the same orientation as the docking direction, i.e., towards the lifting platform. The preset position is the position corresponding to the anti-collision block of the aerial transport vehicle. When the lifting platform assembly 3 rises from below to the docking position, the lifting rod 3523 will be lifted by the lifting platform assembly 3, thus retracting the stop bar 352 into space. When the lifting platform assembly 3 descends from the docking position, the lifting rod 3523 receives its own weight and descends with the lifting platform assembly 3 until the second end of the L-shaped rod 3521 is supported by the track.

[0215] Therefore, by adopting the lifting rod 3523, the overall raising and lowering of the stop rod 352 does not require a power mechanism, further saving space.

[0216] In some examples, the stop 3522 and / or the lifting rod 3523 may preferably be elastic components, which can provide better cushioning performance and improve reliability and safety when the car rolls away.

[0217] In some implementations, a detection unit can be used to detect the docking process between the track and the lifting platform. By using a simple, small-sized additional detection unit, the safety and reliability of the anti-slip docking mechanism can be further improved with a small increase in the overall size of the mechanism.

[0218] In some examples, the anti-runaway docking mechanism further includes: the first detection unit 353 may include a first detector 3531 and a second detector 3532, the first detector 3531 and the second detector 3532 are respectively located on two target tracks 331 and away from the opposite side of the two target tracks 331, so as to be arranged on the corresponding target tracks 331 without interfering with the movement of the air transport vehicle.

[0219] The first detector 3531 and the second detector 3532 are used to detect whether there is an aerial transport vehicle (i.e., an OHT vehicle) on the target track 331. When an aerial transport vehicle is detected on the target track 331, the first detection result is output. When no aerial transport vehicle is detected on the target track 331, the second detection result is output.

[0220] Therefore, the second end of the stop bar 352 can fall onto the other side of the target track 331 according to the first detection result. At this time, the stop bar 352 can act as a railing on the target track 331, thereby preventing the aerial transport vehicle from sliding along the docking direction. That is, after the second end of the stop bar 352 falls onto the track, it forms a track railing, effectively preventing the OHT trolley from sliding towards the lifting platform. In addition, the second end of the stop bar 352 can be retracted from the other side of the target track 331 according to the second detection result. At this time, after the stop bar 352 is retracted, it no longer acts as a railing on the target track 331, thereby allowing the aerial transport vehicle to slide along the docking direction. That is, after the stop bar 352 is retracted from the track, there is no longer a railing on the track, so the OHT trolley can shuttle between the track and the lifting platform.

[0221] It should be noted that the first detector 3531 and the second detector 3532 are arranged diagonally opposite each other. The second detector 3532 is a transmitter, and the first detector 3531 is a receiver. Therefore, the second detector 3532 transmits signals to the first detector 3531 (such as...). Figure 7 (Illustrative image) If an OHT trolley is stationary on the track, the signal will be blocked by the OHT trolley, and the receiver will not be able to receive the signal; conversely, the signal can be received if the OHT trolley is not stationary. The transmission direction of the detection signals of the first detector 3531 and the second detector 3532 can be set to form an acute angle with the extension direction of the target tracks 331 on both sides (i.e., the direction of travel of the air transport vehicle).

[0222] In some examples, the anti-runaway docking mechanism further includes a second detection unit 354, which includes a third detector 3541 and a fourth detector 3542, wherein the third detector 3541 and the fourth detector 3542 are respectively disposed on two target tracks 331.

[0223] When the third detector 3541 and the fourth detector 3542 send a detection signal 356 toward the lifting platform assembly, the detection signal 356 will be blocked by the locking member 311 of the lifting platform assembly 3. Thus, by detecting the locking member of the lifting platform assembly, it is determined whether the lifting platform assembly has risen to the docking position. The locking member of the lifting platform assembly is a component used to lock the air transport vehicle that is stationary in the lifting platform assembly.

[0224] In some implementations, the lifting platform can directly dock with the overhead track after rising to the docking position to achieve OHT trolley track switching. However, given that the height of the overhead track (i.e. the track on which the OHT trolley runs) may vary when deployed in actual workshops, it would be very convenient to deploy the OHT overhead lifting system if a docking track with flexible height adjustment could be built into the OHT suspended lifting system.

[0225] In addition, considering that the OHT trolley on the aerial track needs to descend to the ground for maintenance, or that the OHT trolley needs to enter the aerial track after rising from the ground, if a docking track can be built into the OHT suspended lifting system, the OHT trolley can temporarily stay in the track according to the actual docking and track switching needs, which can effectively improve docking efficiency and is also conducive to the actual deployment of the OHT suspended lifting system.

[0226] Therefore, in any of the foregoing embodiments, the anti-slip docking mechanism in the aforementioned example can be implemented in the OHT suspended lifting system. That is, the target track 331 can be used as a component of the OHT suspended lifting system. Thus, when the OHT suspended lifting system is actually deployed, the docking process between the target track and the aerial track can be adjusted in a timely manner according to the height of the aerial track, so that the OHT suspended lifting system can be deployed quickly.

[0227] refer to Figures 2 to 5 and combined Figures 34 to 39 As shown, the target track 331 is hoisted to the lower surface of the ceiling mounting component 1 by the hoisting assembly, and the first end of the target track 331 is used to dock with the lifting platform assembly, while the second end of the target track 331 is fixedly docked with the aerial track (not shown in the figure) through the track connector 337.

[0228] In some implementations, the hoisting components can be mounted on a flat ceiling-mounted bracket facing the ceiling, which allows for easy adjustment of the hoisting height and facilitates actual deployment.

[0229] refer to Figures 34 to 35 The hoisting assembly includes a track hoisting frame 333 and a ceiling-mounted hoisting frame 335. The track hoisting frame 333 is fixedly connected to the target track 331. The bottom of the ceiling-mounted hoisting frame 335 is fixedly connected to the top of the multiple track hoisting frames 333. The top of the ceiling-mounted hoisting frame 335 is connected to the ceiling-mounted assembly 1 in the OHT suspended lifting system (see above). Figure 1 (Illustrative) Fixed connection.

[0230] It should be noted that, since the top of the ceiling mounting bracket 335 is designed as a sloping structure and the ceiling mounting bracket 335 is provided with multiple lifting positions (see the mounting holes provided on the bracket), it can be flexibly fixedly connected to the ceiling mounting components in the OHT suspended lifting system through the lifting components according to the lifting height requirements.

[0231] In some implementations, although the air space above the track to be docked is limited, a reliable and safe locking scheme can be implemented if this space can be effectively utilized. This involves installing a first-side locking component on top of the lifting platform assembly and a second-side locking component in the space above the track. The first-side locking component is fixed relative to the top of the lifting platform, while the second-side locking component is fixed relative to the track to be docked. Because the air space provides more installation space compared to the space outside the track, a stronger structure, a more flexible docking and locking method, and a more reliable and safer locking effect can be achieved. In other words, with a better structural locking scheme, even if the lifting platform's hoisting belt becomes loose or even breaks, the locking structure can still maintain the tight relationship between the track to be docked and the lifting platform, preventing tilting of the track and / or the lifting platform, and allowing the OHT trolley to move smoothly between the track and the lifting platform without falling.

[0232] refer to Figures 37 to 39 As shown, the track docking anti-fall mechanism provided in this application may include: a first side locking member 321, a second side locking member 341 for cooperating with the first side locking member 321, and a drive assembly 342 for driving the second side locking member 341 to extend and retract.

[0233] On the one hand, the first locking member 321 is disposed on the top of the lifting platform assembly 3 and is oriented towards the docking direction. The relative position between the first locking member 321 and the parking rail 10 (i.e. the rail used for temporary OHT stop) of the lifting platform assembly 3 is fixed, for example, it is fixedly disposed on the top of the lifting platform. At this time, the first locking member 321 and the parking rail 10 of the lifting platform assembly 3 maintain a fixed relative position relationship.

[0234] It should be noted that both ends of the lifting platform assembly can typically be used to dock with their respective corresponding tracks, allowing the OHT trolley to switch between operating tracks (i.e., aerial tracks) via the lifting platform assembly. Of course, only one end can be used for docking; this is not a limitation.

[0235] Secondly, the second locking member 341 is disposed in the space above the track to be docked (such as the target track 331 in the docking track 4 in the aforementioned example). The relative position between the second locking member 341 and the track to be docked is fixed, for example, it is fixedly disposed on the upper fixing member of the track to be docked (such as on the top of the lifting member of the lifting track). At this time, the second locking member 341 and the track to be docked can maintain a fixed relative position relationship.

[0236] Therefore, based on the structural design where the first side locking member 321 and the second side locking member 341 have a fixed positional relationship with their respective tracks, and the fact that the first side locking member 321 and the second side locking member 341 are components that cooperate to lock together, the track to be docked and the parking track 10 of the lifting platform assembly 3 can remain stable under the locking of the first side locking member 321 and the second side locking member 341. Moreover, the flatness between the tracks is guaranteed, so the OHT trolley is less likely to fall when stopping or shuttling between the two tracks. Furthermore, even if the flexible lifting belt of the lifting platform assembly 3 becomes loose or even breaks, the impact of belt deterioration is very small due to the stable locking between the first side locking member 321 and the second side locking member 341.

[0237] In practice, based on the aforementioned positional arrangement between the first-side locking member 321 and the second-side locking member 341, the driving assembly 342 drives the second-side locking member 342 to complete the locking and unlocking characteristics between the two locking members, as illustrated below:

[0238] Unlocked state: When the lifting platform component 3 does not need to maintain a docking state with the track to be docked, such as when the OHT trolley no longer needs to shuttle between tracks after completing track switching, or when the lifting platform component and the track to be docked have disengaged, the drive component 342 drives the second side locking member 341 to be in a retracted state, so that the retracted second side locking member 341 does not affect the lifting of the lifting platform component.

[0239] Locked State: When the lifting platform assembly 3 and the track to be docked need to maintain a docked state, the drive assembly 342 drives the second side locking member 341 from the retracted state to the extended state and extends towards the first side locking member 321. The second side locking member 341 and the first side locking member 321 cooperate to lock, so that the parking track 10 of the lifting platform assembly 3 and the track to be docked maintain a stable docked state, so that the flatness between the internal track 10 of the lifting platform assembly 3 and the track to be docked does not change significantly. At this time, the OHT trolley can stay stably and reliably on the parking track 10 of the lifting platform assembly 3, or even the OHT trolley can smoothly shuttle between the track to be docked and the parking track 10 of the lifting platform assembly 3. Therefore, after the two locking members cooperate to lock, it can ensure that the aerial transport vehicle does not fall during the track switching process between the track to be docked and the lifting platform assembly 3.

[0240] In practice, the drive components can adopt flat drive mechanisms, such as lead screw mechanisms and linear modules, which are flat and miniaturized drive mechanisms. This is very beneficial for the drive components to be installed in the air space above the track, further reducing the volume occupied in the air space.

[0241] In summary, by separately installing locking components on the lifting platform and the track, the locking devices can be set up separately, which helps to reduce space occupation. Moreover, both locking components are set in the empty space above. For example, the first locking component is set on top of the lifting platform assembly, and the second locking component is set in the space above the track to be docked. This not only does not affect the docking functions of the original track and lifting platform, but also makes full use of the empty space, which facilitates actual deployment and application.

[0242] In some implementations, given that the locking components are arranged on both sides and located in the upper space, the locking components can adopt a structural form with better performance, reliability, and stability, such as a flat block locking component. This utilizes the larger contact area between the blocks to distribute the force after locking, making the locking structure more reliable. This ensures that the locking after docking provides a smoother track docking process for the OHT trolley during track switching, effectively preventing the OHT trolley from falling.

[0243] In practice, the first side locking member 321 includes an L-shaped block and the second side locking member 341 includes a U-shaped block. The first arm of the L-shaped block is fixedly connected to the top of the first lifting member 322, and the second arm of the L-shaped block faces the track 331 to be docked, so that after the second side locking member 341 is extended, the second arm of the L-shaped block engages with the groove of the U-shaped block to lock.

[0244] In practice, there can be multiple L-shaped and U-shaped structural components. For example, two U-shaped structural components can be set on one side of the track 331 to be docked, and two L-shaped structural components can be set on one side of the lifting platform component 3. In this way, the structural strength of the locking component can be further strengthened by the cooperation and locking between multiple block structural components, thereby improving the reliability and safety of the overall structure.

[0245] In some examples, the second-side locking member 341 can also be installed in a similar way to the recessed structure to distribute the force. For example, a corresponding recessed structure can be set on the telescopic plate 343. In this case, the second-side locking member 341 is embedded in the recessed structure and then fixedly connected to the telescopic plate 343, so that the telescopic plate 343 can bear part of the force of the second-side locking member 341 and distribute the force.

[0246] Therefore, through the interlocking relationships between structures, the force can be effectively distributed to each structural component during locking, avoiding excessive force concentration that could affect the locking effect. For example, when the belt of the lifting platform assembly becomes loose or even breaks, the first-side locking member 321 will press down on the second-side locking member 341. Correspondingly, the lower arm of the U-shaped block in the second-side locking member 341 supports the second arm of the L-shaped block in the first-side locking member 321, and the upper arm of the U-shaped block in the second-side locking member 341 restricts and locks the second arm of the L-shaped block in the first-side locking member 321. Furthermore, the first arm of the L-shaped block in the first-side locking member 321 transmits the force to the first lifting member 322, thus dispersing the overall force and avoiding excessive force concentration.

[0247] In some embodiments, similar to the first side locking member 321 being installed in the upper space, the second side locking member 341 can also be installed using a hoisting member on the track to be docked 331.

[0248] In some examples, such as Figures 3 to 6 As can be seen, since the track to be docked is usually hoisted by a hoisting component (such as multiple second hoisting components 333), the second side locking component 341 can be set on top of the second hoisting component 333 and facing the docking direction. The second hoisting component 333 is a hoisting component used to hoist the track to be docked. At this time, the second hoisting component 333 and the track to be docked are in a fixed connection relationship. Therefore, the second side locking component 341 and the track to be docked have a fixed relative positional relationship.

[0249] In some embodiments, since the track to be docked is a track that is fixedly hoisted in the air, the track to be docked is hoisted in the air by a hoisting frame 335 and multiple second hoisting components 333. This hoisting structure has the characteristics of high structural strength and high stability. Therefore, the force on the second side locking component during locking can be distributed to the hoisting structure. For example, the force on the second side locking component can be distributed to the hoisting structure by a large area base plate structure.

[0250] In one example, the structure and installation method of the second side locking member can be installed using a mounting plate 344, wherein the mounting plate 344 is fixedly connected to the top of multiple second lifting members 333, and the drive assembly 342 is installed on the mounting plate 344. The drive assembly 342 is used to drive the second side locking member 341 to perform linear telescopic movement so that after extension, the second side locking member 341 cooperates with the first side locking member 321 to lock.

[0251] Optionally, the mounting plate 344 can also be clamped between the lifting frame 335 and the second lifting component 333, which not only improves the stability of the lifting structure of the track 331 to be docked, but also further disperses the force distributed by the mounting plate 344 between the lifting frame and the lifting component.

[0252] In some embodiments, given that the first locking member is located on the lifting platform assembly side and the second locking member is located on the track to be docked side, elastic pads can be used in the installation of the first and / or second locking members to improve the stability of track docking between the track to be docked and the lifting platform assembly. Furthermore, the first and second locking members are the first parts subjected to force during locking, and using elastic pads also helps to buffer the force, enhancing the overall structure's characteristics during the locking process. For example, it facilitates locking after guidance, and the deformation of the elastic pads can compensate for any loosening of the lifting platform assembly's hoisting belt, ensuring that the track docking between the track to be docked and the lifting platform assembly remains stable. Therefore, the first locking member is mounted on the top of the lifting platform via a first elastic pad 323, so that the deformation of the first elastic pad 323 fixes the relative position between the first locking member 321 and the parking track 10 of the lifting platform.

[0253] Similarly, the second side locking member 341 is disposed in the space above the track 331 to be docked via the second elastic pad 345, so that the relative position between the second side locking member and the track to be docked is fixed by the deformation of the second elastic pad 345.

[0254] It should be noted that the elastic pad can be elastic rubber, spring coil, etc., and the quantity is not specifically limited.

[0255] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0256] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An OHT suspended lifting system, characterized in that, include: Ceiling mounting components, lifting and hoisting components, lifting platform components, and docking rails; The ceiling mounting assembly is fixedly installed on the lower surface of the ceiling to provide a component installation space of a preset height within the frame of the ceiling mounting assembly; The lifting and boosting assembly is mounted on the roof mounting assembly and is configured as a synchronous belt retraction and release assembly. The lifting platform assembly is connected to the belt assembly so as to raise and lower the belt assembly as the lifting and lowering assembly moves. The docking rail is suspended below the ceiling mounting assembly, wherein one end of the docking rail docks with the overhead rail, and the other end of the docking rail is used to dock with the parking rail of the lifting platform assembly when the lifting platform assembly rises to the docking position. The parking rail of the lifting platform assembly is located inside the lifting platform assembly. The lifting platform assembly is equipped with an anti-slip mechanism, which is configured to: when the lifting platform assembly is not connected to the docking rail, restrict the movement of the OHT trolley carried on the lifting platform assembly relative to the lifting platform assembly or to prevent it from leaving the lifting platform assembly; when the lifting platform assembly is connected to the docking rail, allow the OHT trolley to travel between the docking rail and the lifting platform assembly. The docking track is equipped with an anti-slip docking mechanism, which is configured to: when the lifting platform assembly is not docked with the docking track, restrict the OHT trolley carried on the docking track from moving away from the docking track in the direction of docking with the lifting platform assembly; when the lifting platform assembly is docked with the docking track, allow the OHT trolley to travel between the docking track and the lifting platform assembly.

2. The OHT suspended lifting system according to claim 1, characterized in that, The ceiling mounting assembly includes a frame body, an adjustable plate for hoisting, and an adjustment mechanism; wherein, the frame body is fixedly connected to the lower side of the ceiling; the adjustable plate is adjustablely connected to the frame body through the adjustment mechanism, and the adjustable plate is arranged facing the ceiling to provide mounting space for the assembly below the adjustable plate; The mounting space below the ceiling-mounted assembly accommodates at least a portion of the lifting assembly.

3. The OHT suspended lifting system according to claim 1, characterized in that, The lifting and boosting assembly includes: At least one drive mechanism; A belt lifting mechanism has a first rotating shaft and at least one synchronous pulley arranged axially along the first rotating shaft; A belt take-up and unwinding mechanism having a second rotating shaft and at least one take-up portion arranged along the axial direction of the second rotating shaft; The belt assembly includes at least one belt, wherein: A belt is wound around a synchronous pulley, and one end of the belt is connected to a winding section. The belt engages with the synchronous pulley to form a wrap angle and is supported by the synchronous pulley. The other end of the belt is connected to the lifting object. The first rotating shaft is configured to be driven by the drive mechanism to rotate the synchronous pulley on the first rotating shaft, wherein the synchronous pulley drives a belt meshing with the synchronous pulley to raise or lower the lifting object; The second rotating shaft is configured to be driven by the drive mechanism to rotate the winding portion on the second rotating shaft, wherein the winding portion, which is connected to a belt, winds up or unwinds the belt.

4. The OHT suspended lifting system according to claim 3, characterized in that, The at least one drive mechanism includes a power mechanism and a transmission component; The power mechanism includes a servo motor and a reducer that is connected to the servo motor. The reducer drives the first rotating shaft and the second rotating shaft to rotate via a transmission component. The transmission components include: The first gear mechanism, wherein the gear rotation shaft of the first gear mechanism is connected to the reducer; The second gear mechanism and the belt tensioning mechanism; wherein the second gear mechanism is connected to the first gear mechanism through gear transmission, and the second gear mechanism is connected to the first rotating shaft to drive the first rotating shaft to rotate; the belt tensioning mechanism presses on the side wall of the at least one belt away from the synchronous pulley meshing with the belt, so that the belt and the synchronous pulley form a wrap angle of a specified angle; The third gear mechanism is connected to the first gear mechanism via gear transmission, and the third gear mechanism is connected to the second rotating shaft to drive the second rotating shaft to rotate, thereby driving the at least one winding section to wind up and unwind the belt. The first gear mechanism is used to synchronously drive the second and third gear mechanisms.

5. The OHT suspended lifting system according to claim 1, characterized in that, The anti-runaway mechanism includes: The locking part located on the side of the lifting platform can automatically switch from the unlocking state to the locking state and remain in the locking state when no external force is applied; and when an external force is applied, it switches from the locking state to the unlocking state and remains in the unlocking state while the external force is maintained; when the locking part is in the locking state, the locking end of the locking part automatically locks the OHT trolley on the parking rail inside the lifting platform to prevent the OHT trolley from moving on the parking rail inside the lifting platform and / or the OHT trolley from leaving the parking rail; An unlocking part is located on the same side as the locking part, wherein the unlocking part is used to trigger the locking part to enter the unlocking working state when the lifting platform rises to the first preset position, so that the locking end of the locking part retracts to unlock the OHT trolley, allowing the OHT trolley to move on the parking track inside the lifting platform and / or the OHT trolley to leave the parking track.

6. The OHT suspended lifting system according to claim 1, characterized in that, The lifting platform assembly includes: Lifting frame; An internal track is provided on the hoisting frame. The internal track is used to carry the OHT trolley and to dock with other tracks when the OHT trolley needs to enter other tracks. A power supply device, comprising a power source mounted on the side of the lifting platform assembly to move up and down with the lifting platform assembly, the power source being used to wirelessly draw power from a power supply cable, wherein the power supply cable is mounted on the side of the ceiling mounting assembly via several brackets; and, A power supply device, the power supply device including a power supply cable arranged along the internal track, the power supply cable being electrically connected to the power extraction device; Wherein: After the power acquisition device obtains power from the power supply cable at the ceiling mounting component, the power supply device can provide power to the OHT trolley carried on the internal track.

7. The OHT suspended lifting system according to claim 1, characterized in that, The anti-runaway docking mechanism includes: The docking track has two target tracks and one end of the docking track is connected to the air track to allow the air transport vehicle to travel between the docking track and the air track; A stop bar, which is disposed above the docking rail; and, A connecting mechanism that connects the stop bar to the docking track; wherein: When the lifting platform assembly rises to the docking position, it docks with the other end of the docking track to allow the air transport vehicle to travel between the docking track and the lifting platform assembly; As the lifting platform assembly rises from below to the docking position, the stop bar is lifted by the lifting platform assembly and retracted from the docking track to the unblocked position, allowing the aerial transport vehicle to drive from the docking track into the lifting platform assembly or from the lifting platform assembly into the docking track. As the lifting platform assembly descends from the docking position, the stop bar, under its own gravity, descends to the blocking position along with the lifting platform assembly, preventing the aerial transport vehicle from driving out from the docking track toward the direction of entering the lifting platform assembly.

8. The OHT suspended lifting system according to claim 1, characterized in that, The OHT suspended lifting system also includes a track docking anti-fall mechanism, which comprises: The first side locking member is located on the top of the lifting platform and faces the docking direction. The relative position between the first side locking member and the internal track of the lifting platform is fixed. A second side locking member is used to cooperate with the first side locking member, wherein the second side locking member is disposed in the space above the docking rail, and the relative position between the second side locking member and the docking rail is fixed; The drive component is configured to drive the second-side locking member to switch to the docking position or the release position; wherein: The docking position is such that the second side locking member engages with the first side locking member, and prevents the lifting platform from moving in the height direction, and / or provides support to the lifting platform; The release position is when the second side locking member is far away from the first side locking member, and the lifting platform is allowed to move along the height direction.

9. The OHT suspended lifting system according to claim 1, characterized in that, The OHT suspended lifting system also includes a ground platform track, the ground platform track includes a first locking part, and the lifting platform assembly includes a second locking part; wherein, the first locking part is disposed on the first end of the parking track of the ground platform track, the second locking part is disposed on the first end of the parking track of the lifting platform assembly, and the first end of the parking track of the ground platform track and the first end of the parking track of the lifting platform assembly are docking ends.

10. The OHT suspended lifting system according to claim 2, characterized in that, The OHT suspended lifting system also includes a radar sensor, which is disposed on the lower surface of the adjustment plate. The radar sensor is used to dynamically detect targets in a preset work area when the lifting platform assembly is lifting. When a preset target is detected to enter the work area, the radar sensor issues a stop operation signal and / or an alarm signal.

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