rack and pinion hoist

Abstract

The application relates to a rack and pinion hoist which solves the problems that the middle trough needs to be manually carried and installed, the operation efficiency is low and the risk is high to some extent. The rack and pinion hoist comprises a bearing plate, a driving mechanism, a hoisting mechanism and a sliding mechanism. The driving mechanism is arranged on the bearing plate, the middle trough is provided with a rack extending along a laying direction, the driving mechanism comprises a driving member and a gear, and the gear is engaged with the rack. The hoisting mechanism comprises a rotating assembly and a hoisting assembly. The rotating assembly is rotationally connected with the bearing plate. The hoisting assembly comprises a first supporting arm and a second supporting arm. One end of the first supporting arm is connected with the rotating assembly and can rotate along with the rotating assembly. One end of the second supporting arm is rotationally connected with the first supporting arm and can be in a folded state with the first supporting arm. The sliding mechanism is arranged on the bottom surface of the bearing plate and is arranged corresponding to the edge step of the middle trough. The sliding mechanism can slide on the edge step and support the bearing plate to keep a horizontal state.

Description

Technical Field

[0001] This application relates to the field of downhole equipment technology, and more specifically, to a rack and pinion crane. Background Technology

[0002] As mining depths increase, underground working environments become increasingly complex, leading to a growing demand for mechanized equipment. Gear rack cranes, as specialized transport equipment designed to adapt to underground working environments, utilize the meshing transmission of gears and racks to provide greater driving torque, effectively overcoming the resistance of underground ramp operations. They are widely used in underground mining sectors such as coal and metal mines. These machines are typically equipped with lifting mechanisms to transport and install heavy underground equipment such as coal mining machines and hydraulic supports.

[0003] In roadway support operations, hydraulic supports and other support equipment need to be erected promptly to ensure the safety of the working face roof. After these supports are installed, the cross-sectional space of the roadway is significantly reduced, and the central trough structure for coal transportation still needs to be installed subsequently. Due to the narrow remaining space in the roadway, conventional rack cranes and other lifting equipment are limited by their size and operating radius, making it impossible to complete the lifting and precise positioning of the central trough within the limited space after the supports are installed.

[0004] Currently, the industry generally uses manual handling, where workers use transport vehicles and small hoisting equipment to move individual sections of the central trough to the installation location, where they then manually connect and secure them. This method is not only labor-intensive and inefficient, but also poses significant safety hazards due to multiple people working together in confined spaces, increasing the risk of accidents such as being struck by objects or being crushed.

[0005] Therefore, there is an urgent need to provide a rack crane to solve the above problems to some extent. Utility Model Content

[0006] The purpose of this application is to provide a rack crane to solve, to some extent, the problem that the current middle channel needs to be manually transported and installed, which is inefficient and risky.

[0007] To achieve the above objectives, the rack crane provided in this application is used for laying a central trough, including a support plate, a drive mechanism, a lifting mechanism, and a sliding mechanism. The drive mechanism is disposed on the support plate, and a rack extending along the laying direction is provided on the central trough. The drive mechanism includes a drive component and a gear, and the gear meshes with the rack. The lifting mechanism includes a slewing component and a lifting assembly. The slewing component is rotatably connected to the support plate. The lifting assembly includes a first arm and a second arm. One end of the first arm is connected to the slewing component and can rotate with the slewing component. One end of the second arm is rotatably connected to the first arm and can be folded with the first arm. The sliding mechanism is disposed on the bottom surface of the support plate and is provided corresponding to the edge step of the central trough. The sliding mechanism can slide on the edge step and support the support plate to maintain a horizontal state.

[0008] The rack crane provided by this utility model further includes a limiting mechanism, which includes a mounting plate, a first limiting component, and a second limiting component. The mounting plate is connected to the bearing plate. The first limiting component and the second limiting component are both arranged on the mounting plate and have opposite extension and retraction directions. The first limiting component forms a first limiting part, and the second limiting component forms a second limiting part. The two sides of the central groove have a first engaging part and a second engaging part that extend along the laying direction of the central groove and correspond to the positions of the first limiting part and the second limiting part, respectively. The first limiting part can be inserted into or removed from the first engaging part, and the second limiting part can be inserted into or removed from the second engaging part.

[0009] Specifically, both the first limiting component and the second limiting component include a telescopic member, a connecting plate, and a snap-fit ​​block. The positioning end of the telescopic member is connected to the mounting plate, the telescopic end is connected to one end of the connecting plate, and the other end of the connecting plate is connected to the snap-fit ​​block. The snap-fit ​​block of the first limiting component forms the first limiting part, and the snap-fit ​​block of the second limiting component forms the second limiting part.

[0010] Specifically, positioning plates are connected to both the front and rear ends of the support plate, and the mounting plate is detachably connected to the positioning plates.

[0011] The rotary assembly includes a rotary drive and a rotary base. The rotary base is rotatably connected to the support plate, and the rotary drive is connected to the rotary base, driving the rotary base to rotate relative to the support plate. The first arm includes a first drive cylinder and a first arm body. The positioning end of the first drive cylinder is rotatably connected to the rotary base, and the telescopic end is rotatably connected to the first arm body. One end of the first arm body is rotatably connected to the rotary base, and the second arm is rotatably connected to the other end of the first arm body.

[0012] Specifically, the second arm includes a folding drive cylinder and a second arm body. One end of the folding drive cylinder is rotatably connected to the first arm body, and the other end is rotatably connected to the second arm body.

[0013] Furthermore, the second arm includes a first telescopic box, a second telescopic box, and a box drive; one end of the first telescopic box is rotatably connected to the first arm, the second telescopic box is disposed inside the first telescopic box, and the box drive is disposed inside the first telescopic box and connected to one end of the second telescopic box, driving the second telescopic box to extend or retract from the first telescopic box.

[0014] The sliding mechanism includes a sliding shoe and a connecting seat. The connecting seat is fixedly connected to the bottom surface of the bearing plate, and the sliding shoe is rotatably connected to the connecting seat.

[0015] Specifically, the sliding mechanism further includes an adjustment drive, the positioning end of which is connected to the bearing plate and the telescopic end is connected to the connecting seat. The adjustment drive can extend and retract in the vertical direction to drive the sliding shoe to move towards or away from the edge step.

[0016] Furthermore, the bearing plate has a third limiting part formed at the position corresponding to the toothed rail, and the third limiting part surrounds the toothed rail.

[0017] Compared with existing technologies, the rack crane provided in this application has the following advantages: The rack crane provided in this application is used for laying a central trough, and includes a support plate, a drive mechanism, a lifting mechanism, and a sliding mechanism. The drive mechanism is mounted on the support plate, and a rack extending along the laying direction is provided on the central trough. The drive mechanism includes a drive component and a gear, which meshes with the rack. The lifting mechanism includes a slewing component and a lifting component. The slewing component is rotatably connected to the support plate. The lifting component includes a first arm and a second arm. One end of the first arm is connected to the slewing component and can rotate with the slewing component. One end of the second arm is rotatably connected to the first arm and can be folded with the first arm. The sliding mechanism is mounted on the bottom surface of the support plate and is provided corresponding to the edge steps of the central trough. The sliding mechanism can slide on the edge steps and support the support plate to maintain a horizontal state.

[0018] As can be seen from the analysis, the support plate can provide an installation foundation for the drive mechanism, lifting mechanism and sliding mechanism. Of course, the support plate can also provide an installation foundation for other structures of the rack crane, such as the heat dissipation system, hydraulic system and control system and circuit system. Since the heat dissipation system, hydraulic system and control system are the same as the equipment and structure used in traditional rack cranes, they will not be described in detail here. Only the utility model points provided in this application are described.

[0019] It is understood that a rack is laid on the central channel in this application. Since the central channel is usually formed by splicing sections, the rack is laid along with the central channel. Since the weight of a single rack is low, it can be directly lifted by a lifting mechanism and transported to the designated position together with the central channel for installation, connection and laying.

[0020] The driving component in this application can be a drive structure such as an electric motor or hydraulic motor, which can drive the gears. Since the gears mesh with the gear rack, the entire vehicle can be moved. Correspondingly, the lifting mechanism provided on the support plate can be used to lift and transport the central slot, gear rack, and other tools or equipment.

[0021] During the hoisting process, since the rack crane provided in this application is used for the laying and installation of the central trough, a sliding mechanism is provided on the bottom of the bearing plate corresponding to the edge step of the central trough. The sliding mechanism, in conjunction with the gear, can keep the bearing plate in a horizontal state, thereby ensuring the stability of the whole vehicle operation and the hoisting process.

[0022] Since the lifting mechanism in this application includes a lifting assembly and a slewing assembly, and the lifting assembly includes a first arm and a second arm, and the second arm can be folded with the first arm, the slewing assembly can drive the lifting assembly to rotate relative to the bearing plate, so that after the lifting assembly is placed on the middle trough, it can rotate to the rear to lift the middle trough.

[0023] Due to the confined working space, folding the first and second booms reduces the rotation radius of the lifting assembly during rotation, allowing it to better adapt to the limited space and ensuring a high throughput. Once the lifting assembly reaches the front, the central slot can be released at the corresponding position. Then, manual connection and installation of adjacent central slots can be performed, improving work efficiency to some extent. Furthermore, only 1-2 workers are needed to complete the connection and installation of the central slots.

[0024] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A structural schematic diagram of the rack crane provided in the first embodiment of this application from a first-view perspective; Figure 2 A structural schematic diagram of the rack crane provided in the first embodiment of this application from a second perspective; Figure 3 This is a schematic diagram of the rack crane limiting mechanism provided in the first embodiment of this application; Figure 4 A structural schematic diagram of the rack crane provided in the first embodiment of this application from a third-view perspective; Figure 5 This is a schematic diagram of the internal structure of the rack crane provided in the first embodiment of this application.

[0027] Icons: 1-Bearing plate; 101-Positioning plate; 102-Third limiting part; 2-Gear; 3-Drive component; 4-Gear rail; 5-Central groove; 501-Edge step; 502-First locking part; 503-Second locking part; 6-Rotating seat; 7-First support arm; 701-First drive cylinder; 8-Second support arm; 801-First telescopic box; 802-Second telescopic box; 803-Folding drive cylinder; 9-Telescopic component; 901-Connecting plate; 10-Mounting plate; 11-Locking block; 1101-First limiting part; 1102-Second limiting part; 12-Slipper; 1201-Connecting seat; 13-Outer shell. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] like Figures 1-5 As shown, the rack crane with a toothed rail 4 provided in this application is used for laying a central groove 5. It includes a support plate 1, a drive mechanism, a lifting mechanism, and a sliding mechanism. The drive mechanism is set on the support plate 1, and a rack 4 extending along the laying direction is provided on the central groove 5. The drive mechanism includes a drive component 3 and a gear 2, and the gear 2 meshes with the rack 4. The lifting mechanism includes a slewing component and a lifting component. The slewing component is rotatably connected to the support plate 1. The lifting component includes a first arm 7 and a second arm 8. One end of the first arm 7 is connected to the slewing component and can rotate with the slewing component. One end of the second arm 8 is rotatably connected to the first arm 7 and can be folded with the first arm 7. The sliding mechanism is set on the bottom surface of the support plate 1 and is set corresponding to the edge step 501 of the central groove 5. The sliding mechanism can slide on the edge step 501 and support the support plate 1 to maintain a horizontal state.

[0032] Compared with existing technologies, the rack crane provided in this application has the following advantages: The rack crane provided in this application, through the provided support plate 1, can provide an installation foundation for the drive mechanism, lifting mechanism and sliding mechanism. Of course, the support plate 1 can also provide an installation foundation for other structures of the rack crane, such as the heat dissipation system, hydraulic system and control system and circuit system. Since the heat dissipation system, hydraulic system and control system are the same as the equipment and structure used in the traditional rack crane, they will not be described in detail here. Only the utility model points provided in this application are described.

[0033] It is understood that a toothed rail 4 is laid on the central channel 5 in this application. Since the central channel 5 is usually formed by splicing sections, the toothed rail 4 laid in this application is laid together with the central channel 5. Since the weight of a single toothed rail 4 is low, it can be directly lifted by a lifting mechanism and transported to the designated position together with the central channel 5 for installation, connection and laying.

[0034] The drive component 3 in this application can be a drive structure such as an electric motor or a hydraulic motor, which can drive the gear 2. Since the gear 2 meshes with the gear rail 4, the entire vehicle can be moved. Correspondingly, the lifting mechanism provided on the support plate 1 can be used to lift the central groove 5, the gear rail 4, and other tools or equipment.

[0035] During the hoisting process, since the rack 4 crane provided in this application is used for the laying and installation of the middle groove 5, a sliding mechanism is provided on the bottom of the bearing plate 1 corresponding to the edge step 501 of the middle groove 5. The bearing plate 1 can be kept in a horizontal state by the sliding mechanism in conjunction with the gear 2, thereby ensuring the stability of the whole vehicle operation and the stability of the hoisting process.

[0036] Since the lifting mechanism in this application includes a lifting assembly and a slewing assembly, and the lifting assembly includes a first arm 7 and a second arm 8, and the second arm 8 can be folded with the first arm 7, the slewing assembly can drive the lifting assembly to rotate relative to the bearing plate 1, so that after the lifting assembly is placed on the middle groove 5, it can rotate to the rear to lift the middle groove 5.

[0037] Due to the confined working space, the folding of the first boom 7 and the second boom 8 reduces the rotation radius of the lifting assembly during rotation, thus better adapting to the limited space and ensuring the lifting assembly's passability. Once the lifting assembly has rotated to the front, the central slot 5 can be released at the corresponding position. Then, manual connection and installation of adjacent central slots 5 can be performed, improving work efficiency to a certain extent. Furthermore, it requires only 1-2 workers to complete the connection and installation of the central slots 5, eliminating the need for a large workforce.

[0038] Optionally, such as Figures 2-4As shown, the rack crane 4 provided by this utility model also includes a limiting mechanism, which includes a mounting plate 10, a first limiting component, and a second limiting component. The mounting plate 10 is connected to the bearing plate 1. The first limiting component and the second limiting component are both arranged on the mounting plate 10, and the first limiting component and the second limiting component have opposite extension and retraction directions. The first limiting component forms a first limiting part 1101, and the second limiting component forms a second limiting part 1102. The two sides of the central groove 5 are formed with a first engaging part 502 and a second engaging part 503 extending along the laying direction of the central groove 5 and corresponding to the positions of the first limiting part 1101 and the second limiting part 1102, respectively. The first limiting part 1101 can be inserted into or removed from the first engaging part 502, and the second limiting part 1102 can be inserted into or removed from the second engaging part 503.

[0039] Since the lifting mechanism provided in this application needs to rotate at least 180° when lifting the middle channel 5 to transfer the middle channel 5 from the rear to the front for installation and laying, the overall crane will be subjected to lateral tilting force during the rotation. The limiting mechanism provided in this application can cooperate with the laid middle channel 5 to limit the overall rack 4 crane, avoid the problem of lateral tilting during the lifting and rotation, and improve the stability of the overall rack 4 crane.

[0040] It is understood that this application connects the mounting plate 10 to the bearing plate 1, thereby providing an installation base for the first limiting component and the second limiting component. Both the first limiting component and the second limiting component in this application are telescopic, and the telescopic directions are opposite. In actual operation, the first limiting component and the second limiting component are initially in a retracted state. When support is required, the first limiting component and the second limiting component can both be extended as needed, or they can be extended on one side only according to the rotation direction of the lifting mechanism, such as the first limiting component extending or the second limiting component extending.

[0041] Since the extension of the first limiting component and the second limiting component can drive the first limiting part 1101 into the first engaging part 502 and the second limiting part 1102 into the second engaging part 503, the engagement of the first limiting part 1101 with the first engaging part 502 and the second limiting part 1102 with the second engaging part 503 can, to a certain extent, ensure the stability of the overall crane during the lifting and rotation process, and avoid the problem of vehicle tilting due to excessive gravity in the central groove 5.

[0042] It should be noted that multiple central troughs 5 can be transported in a single hoisting operation, improving operational efficiency.

[0043] Optionally, such as Figure 3 Combination Figure 4As shown, the first limiting component and the second limiting component in this application both include a telescopic member 9, a connecting plate 901 and a snap-fit ​​block 11. The positioning end of the telescopic member 9 is connected to the mounting plate 10, the telescopic end is connected to one end of the connecting plate 901, and the other end of the connecting plate 901 is connected to the snap-fit ​​block 11. The snap-fit ​​block 11 of the first limiting component forms a first limiting part 1101, and the snap-fit ​​block 11 of the second limiting component forms a second limiting part 1102.

[0044] The telescopic component 9 in this application is a hydraulic cylinder, which can provide a more stable thrust, thereby enabling the first limiting part 1101 and the second limiting part 1102 to be inserted into the first locking part 502 and the second locking part 503 respectively, and to remain in the insertion state, thereby enabling the overall device to remain stable.

[0045] Since the mounting plate 10 is connected to the bearing plate 1, and the telescopic member 9 is set on the mounting plate 10, and the telescopic end of the telescopic member 9 has a certain horizontal height after installation, this application can make the snap-fit ​​block 11 accurately correspond to the first snap-fit ​​part 502 and the second snap-fit ​​part 503 by further setting the connecting plate 901 at the telescopic end of the telescopic member 9, thus ensuring the snap-fit ​​effect.

[0046] Optionally, such as Figures 1-4 As shown, the front and rear ends of the bearing plate 1 in this application are connected to positioning plates 101, and the mounting plate 10 and the positioning plates 101 are detachably connected.

[0047] By setting the positioning plate 101, the installation position of the mounting plate 10 can be made more flexible. That is, the positioning plate 101 in this application can provide an installation base for the mounting plate 10. In actual operation, the positioning plate 101 can be used to connect the mounting plate 10 to the positioning plate 101 at the front end, or at the rear end, or the mounting plate 10 can be set at both the front and rear ends. In other words, the limiting mechanism mentioned above in this application can be located at the front end of the bearing plate 1, or at the rear end, or the limiting mechanism can be set at both the front and rear ends, thereby ensuring the operational stability of the overall structure.

[0048] Optionally, such as Figure 2 Combination Figure 5 As shown, the rotary assembly in this application includes a rotary drive and a rotary base 6. The rotary base 6 is rotatably connected to the support plate 1, and the rotary drive is connected to the rotary base 6, driving the rotary base 6 to rotate relative to the support plate 1. The first support arm 7 includes a first drive cylinder 701 and a first arm body. The positioning end of the first drive cylinder 701 is rotatably connected to the rotary base 6, and the telescopic end is rotatably connected to the first arm body. One end of the first arm body is rotatably connected to the rotary base 6, and the second support arm 8 is rotatably connected to the other end of the first arm body.

[0049] In this application, the slewing drive is a slewing motor, which can drive the slewing base 6 to rotate relative to the bearing plate 1. Since one end of the first boom is rotatably connected to the slewing base 6, the rotation of the slewing base 6 can drive the first boom to rotate relative to the bearing plate 1, thereby realizing the rotation of the entire lifting mechanism. The first drive cylinder 701 can realize the lifting and lowering of the first boom, realizing the lifting and lowering of the hoisted items during the hoisting process.

[0050] Furthermore, by rotatably connecting the second arm 8 to the first arm body, this application enables relative rotation between the second arm 8 and the first arm body, thereby achieving a certain degree of folding between the first arm body and the second arm 8, improving the throughput of the rotation process, and avoiding interference with the sidewall of the tunnel.

[0051] It should be noted that there are two first drive cylinders 701 in this application, which are arranged opposite to each other on both sides of the first boom to ensure the stability of the first boom during the lifting and lowering process.

[0052] Optionally, such as Figure 1 Combination Figure 2 As shown, the second arm 8 in this application includes a folding drive cylinder 803 and a second arm body. One end of the folding drive cylinder 803 is rotatably connected to the first arm body, and the other end is rotatably connected to the second arm body.

[0053] In this application, the folding drive cylinder 803 is located below the second arm body, so that the angle adjustment of the second arm body relative to the first arm body can be achieved by extending and retracting the folding drive cylinder 803.

[0054] Furthermore, such as Figure 2 As shown, the second arm in this application includes a first telescopic box 801, a second telescopic box 802, and a box drive; one end of the first telescopic box 801 is rotatably connected to the first arm, the second telescopic box 802 is disposed inside the first telescopic box 801, and the box drive is disposed inside the first telescopic box 801 and connected to one end of the second telescopic box 802, driving the second telescopic box 802 to extend or retract the first telescopic box 801.

[0055] In this application, the second telescopic box 802 is disposed inside the first telescopic box 801, and the box drive is a telescopic hydraulic cylinder. The positioning end is fixedly connected to the bottom of the first telescopic box 801. Correspondingly, the second telescopic box 802 has a receiving cavity, the box drive is disposed inside the receiving cavity, and the telescopic end of the box drive is connected to the inner wall of the end of the second telescopic box 802 located outside the first telescopic box 801. Thus, when the box drive extends or retracts, it can drive the second telescopic box 802 to extend or retract relative to the first telescopic box 801, thereby realizing the extension or shortening of the entire second arm.

[0056] Optionally, such as Figure 1 Combination Figure 4 As shown, the sliding mechanism in this application includes a sliding shoe 12 and a connecting seat 1201. The connecting seat 1201 is fixedly connected to the bottom surface of the bearing plate 1, and the sliding shoe 12 is rotatably connected to the connecting seat 1201.

[0057] By using the sliding shoe 12 and the connecting seat 1201, the sliding shoe 12 can be connected to the bearing plate 1, thereby enabling the sliding shoe 12 to contact the edge step 501 of the central groove 5, thus supporting the side of the bearing plate 1 away from the gear 2 and ensuring that the bearing plate 1 can remain in a horizontal state.

[0058] Since the central trough 5 needs to transport coal, and coal may scatter during transport, traditional driven wheels or other tracked wheels may become unstable or even jammed due to the material on the edge step 501 when coal falls onto the edge step 501. This application addresses this issue by connecting a sliding shoe 12 to the bearing plate 1, with the bottom surface of the sliding shoe 12 always in contact with the edge step 501. This ensures the stability of the entire crane during operation and prevents the stability of movement from being affected by material falling onto the edge step 501.

[0059] And such Figure 1 As shown, the slipper 12 in this application is trapezoidal except for the part connected to the connecting seat 1201, so that it can better adapt to the complex environment underground and run on the edge step 501 in a traversing state. It can scoop up the material that falls on the edge step 501 to a certain extent and prevent it from entering the contact surface between the slipper 12 and the edge step 501, thus ensuring the stability of operation.

[0060] Understandably, due to the different dimensions of the central groove 5 from different manufacturers in practical applications, it is necessary to frequently adjust the dimensions of the sliding shoe 12 according to the distance between the edge step 501 and the toothed rail 4, which greatly increases the manufacturing cost and results in poor adaptability.

[0061] Therefore, the sliding mechanism of this application also includes an adjustment drive. The positioning end of the adjustment drive is connected to the bearing plate 1, and the telescopic end is connected to the connecting seat 1201. The adjustment drive can extend and retract in the vertical direction to drive the sliding shoe 12 to move towards or away from the edge step 501.

[0062] The adjustment drive in this application can be a hydraulic cylinder, and the adjustment drive extends vertically. The positioning end of the adjustment drive is connected to the bearing plate 1, and the telescopic end is connected to the connecting seat 1201. When the slipper 12 cannot contact the edge step 501, the telescopic movement of the adjustment drive can adjust the horizontal height of the slipper 12, thereby enabling the slipper 12 to better adapt to the structure of the middle groove 5 of different manufacturers. In addition, during operation, the telescopic movement of the adjustment drive can be changed according to the requirements to ensure that the slipper 12 can slide smoothly on the edge step 501, avoiding the problem that the slipper 12 will excessively contact the edge step 501 and get stuck due to excessive telescopic movement of the adjustment drive, which would affect the smooth movement of the overall gear 4 crane or even damage the structure of the middle groove 5.

[0063] Furthermore, a third limiting part 102 is formed on the bearing plate 1 at the position corresponding to the toothed rail 4, and the third limiting part 102 surrounds the toothed rail 4.

[0064] In this application, the third limiting part 102 surrounding the toothed rail 4 refers to partially surrounding the toothed rail 4, such as... Figure 4 It can be clearly seen that the third limiting part 102 includes two parts, with Figure 4 Taking a perspective example, the first limiting segment located on the left side of the rack 4 and the second limiting segment located on the right side of the rack 4 are respectively positioned as follows: the first limiting segment corresponds to the left side wall of the rack 4, thereby enabling a certain degree of limitation on the overall rack 4 crane in the width direction; the second limiting segment in this application is L-shaped, with one part corresponding to the left side wall of the rack 4, thereby enabling it to cooperate with the first limiting segment to achieve limitation in the width direction; and the other part of the second limiting segment is located at the bottom of the rack 4, thereby enabling limitation in both the width and vertical directions through the third limiting part 102, preventing the rack 4 crane from tipping over.

[0065] It should be noted that the bearing plate 1 in this application is also provided with a housing 13, which can cover the gear 2, drive component 3 and other necessary equipment such as heat dissipation system, control system and hydraulic system, so as to ensure the stable operation of the overall gear crane. The housing 13 has an opening at the position corresponding to the slewing seat 6, which can realize the slewing action of the lifting mechanism.

[0066] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rack crane for laying a central trough, characterized in that, Includes a support plate, drive mechanism, lifting mechanism, and sliding mechanism; The drive mechanism is mounted on the support plate, and a toothed rail extending along the laying direction is provided on the central groove. The drive mechanism includes a drive component and a gear, and the gear meshes with the toothed rail. The lifting mechanism includes a slewing assembly and a lifting assembly. The slewing assembly is rotatably connected to the bearing plate. The lifting assembly includes a first arm and a second arm. One end of the first arm is connected to the slewing assembly and can rotate with the slewing assembly. One end of the second arm is rotatably connected to the first arm and can be folded with the first arm. The sliding mechanism is disposed on the bottom surface of the support plate and is disposed corresponding to the edge step of the central groove. The sliding mechanism can slide on the edge step and support the support plate to maintain a horizontal state.

2. The rack crane according to claim 1, characterized in that, It also includes a limiting mechanism, which comprises a mounting plate, a first limiting component, and a second limiting component; The mounting plate is connected to the support plate. The first limiting component and the second limiting component are both arranged on the mounting plate, and the first limiting component and the second limiting component have opposite extension and retraction directions. The first limiting component has a first limiting part, and the second limiting component has a second limiting part. The central groove has a first locking part and a second locking part extending along the laying direction of the central groove and corresponding to the positions of the first limiting part and the second limiting part, respectively. The first limiting part can be inserted into or removed from the first locking part, and the second limiting part can be inserted into or removed from the second locking part.

3. The rack crane according to claim 2, characterized in that, Both the first limiting component and the second limiting component include a telescopic member, a connecting plate, and a snap-fit ​​block. The positioning end of the telescopic member is connected to the mounting plate, the telescopic end is connected to one end of the connecting plate, and the other end of the connecting plate is connected to the snap-fit ​​block. The snap-fit ​​block of the first limiting component forms the first limiting part, and the snap-fit ​​block of the second limiting component forms the second limiting part.

4. The rack crane according to claim 2, characterized in that, Positioning plates are connected to both the front and rear ends of the support plate, and the mounting plate is detachably connected to the positioning plates.

5. The rack crane according to claim 1, characterized in that, The rotary assembly includes a rotary drive and a rotary base. The rotary base is rotatably connected to the support plate, and the rotary drive is connected to the rotary base, driving the rotary base to rotate relative to the support plate. The first arm includes a first drive cylinder and a first arm body. The positioning end of the first drive cylinder is rotatably connected to the rotary seat, and the telescopic end is rotatably connected to the first arm body. One end of the first arm is rotatably connected to the rotary seat, and the second arm is rotatably connected to the other end of the first arm.

6. The rack crane according to claim 5, characterized in that, The second arm includes a folding drive cylinder and a second arm body. One end of the folding drive cylinder is rotatably connected to the first arm body, and the other end is rotatably connected to the second arm body.

7. The rack crane according to claim 6, characterized in that, The second arm includes a first telescopic box, a second telescopic box, and a box drive; One end of the first telescopic box is rotatably connected to the first arm body. The second telescopic box is disposed inside the first telescopic box, and the box drive is disposed inside the first telescopic box and connected to one end of the second telescopic box, driving the second telescopic box to extend or retract from the first telescopic box.

8. The rack crane according to claim 1, characterized in that, The sliding mechanism includes a sliding shoe and a connecting seat. The connecting seat is fixedly connected to the bottom surface of the bearing plate, and the sliding shoe is rotatably connected to the connecting seat.

9. The rack crane according to claim 8, characterized in that, The sliding mechanism also includes an adjustment drive. The positioning end of the adjustment drive is connected to the bearing plate, and the telescopic end is connected to the connecting seat. The adjustment drive can extend and retract in the vertical direction to drive the sliding shoe to move towards or away from the edge step.

10. The rack crane according to claim 1, characterized in that, The bearing plate has a third limiting part formed at the position corresponding to the toothed rail, and the third limiting part surrounds the toothed rail.

Images