OHT stability maintaining mechanism and material box conveying device

Abstract

The invention relates to the technical field of OHT equipment, and provides an OHT stability keeping mechanism and a material box conveying device.A driving motor of the OHT stability keeping mechanism is installed on a second sliding rail in a floating mode, when any one of supporting legs on the two sides reaches the operation position firstly, the driving motor serves as a floating part, a second sliding block slides on the second sliding rail, and the material box is conveyed to the operation position through the second sliding block. The stroke of the supporting leg on the other side is increased, so that the supporting leg can quickly reach the operation position, and the advantages that the stress is more balanced when the supporting leg abuts against the traveling rails on the two sides, the abutting acting force difference on the two sides is small, and the rails are not prone to deformation are achieved; meanwhile, a first sliding rail is matched with a first sliding block, when the supporting legs on the two sides are not in place at the same time, the supporting leg on one side abuts against the supporting leg, the supporting leg on the other side does not abut against the supporting leg, the stress part on the first sliding rail is transferred to a second sliding rail, and multi-point dispersed stress of output force of a driving motor when the two sides are not in place at the same time is achieved; and stable and rapid supporting can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of OHT equipment, and in particular to an OHT stable holding mechanism and a box conveying device. BACKGROUND

[0002] In the field of semiconductors, automatic material handling systems (AMHS) are commonly used in wafer factories to improve factory automation and more intelligently manage the transportation and process flow management of materials in the factory. Overhead hoist transport (OHT) is an important subsystem of the automatic material handling system, which is mainly responsible for transporting FOUPs to different process equipment or storage equipment.

[0003] Since the running track of the OHT is suspended from the ceiling of the clean room, the OHT needs to be supported on the track by four running wheels. At present, the market increasingly emphasizes the lightweight design of the OHT to meet the demand for increasing the carrying speed of the OHT and reducing the energy consumption of the OHT, so the mass of the OHT body at the present stage also decreases, thereby the stability of the OHT during operation needs to be re-considered. When the OHT stretches the mechanical arm in the transverse direction to take the material, the center of gravity of the OHT body will shift with the stretching of the mechanical arm, that is, the OHT as a whole will slightly tilt in the direction in which the mechanical arm is stretched. SUMMARY

[0004] The purpose of the present application is to provide an OHT stable holding mechanism and a box conveying device to solve the problem of poor stability caused by the lightweight design of the existing OHT mechanism.

[0005] In a first aspect, the present application provides an OHT stable holding mechanism, comprising: A first mounting plate for connecting with the OHT, a first sliding rail is arranged on the first mounting plate, two first sliding blocks are slidingly installed on the first sliding rail, and a supporting leg for abutting with the crane track is arranged on each of the two first sliding blocks; A drive motor and a lead screw, the output shaft of the drive motor is respectively in transmission connection with the lead screw; a lead screw nut is arranged on the lead screw, and the lead screw nut is connected with the supporting leg in opposite directions, for moving the supporting legs at both ends in opposite directions by the drive motor; A second mounting plate, a second sliding rail is arranged on the second mounting plate, the drive motor is slidingly installed on the second sliding rail through a second sliding block, and the second mounting plate is connected with the first mounting plate through a supporting piece spanning above the drive motor.

[0006] Optionally, the output shafts of the driving motor are respectively connected with the lead screws through elastic transmission units; the elastic transmission unit comprises a first transmission gear disc and a second transmission gear disc; the first transmission gear disc is engaged with the second transmission gear disc; the elastic transmission unit further comprises an elastic plunger, the output shaft of the driving motor is connected with the first transmission gear disc through the elastic plunger, and the second transmission gear disc is connected with the lead screw.

[0007] Optionally, the output shaft of the driving motor is connected with one end of the elastic plunger through a shaft coupling, the elastic plunger comprises a plunger sleeve and a movable plunger, one end of the shaft coupling is threadedly connected with one end of the plunger sleeve, the other end of the plunger sleeve is in transmission connection with one end of the movable plunger through a spline structure, and the other end of the movable plunger is connected with the first transmission gear disc.

[0008] Optionally, the inside of the plunger sleeve is provided with a limiting shoulder, the connecting shaft end of the movable plunger is provided with a limiting block, and the transmission connection and axial limiting are realized through the cooperation and installation of the limiting shoulder and the limiting block.

[0009] Optionally, the elastic plunger and the output shaft of the shaft coupling are connected through a fastening thread.

[0010] Optionally, the second mounting plate is provided with a jack adjusting part at each end along the direction parallel to the axis of the lead screw, the jack adjusting part is mounted on the two ends of the second mounting plate through a support, and is used for adjusting the maximum stroke position of the second sliding block on the second sliding rail.

[0011] Optionally, the driving motor is a double-shaft motor, the rotating directions of the two output shafts of the double-shaft motor are the same, and the thread rotating directions of the lead screws connected with the two output shafts are opposite.

[0012] Optionally, the support end of the support leg extends downwardly and obliquely away from the driving motor, and the support end is provided with a protective pad.

[0013] Optionally, one side of the support leg is detachably connected with the first sliding block, the other side of the support leg is provided with a positioning block, a plurality of positioning bolts are arranged on the positioning block, and the lead screw nut is clamped through the plurality of positioning bolts.

[0014] In a second aspect, the present application further provides a material box conveying device, comprising the OHT stable holding mechanism as described in the first aspect.

[0015] The present application has at least the following technical effects: The OHT stable holding mechanism and the material box conveying device provided by the application, the driving motor is floatingly installed on the second sliding rail, when the support feet on both sides reach the working position at different times, the driving motor is taken as a floating part, the second sliding block slides on the second sliding rail, the stroke of the support feet on the other side is increased, the support feet can quickly reach the working position, the force is more balanced when the support feet abut against the two tracks, the abutting force difference of the two sides is small, the track is not easy to deform and the like; meanwhile, the first sliding rail and the first sliding block are matched, when the support feet on both sides reach the working position at different times, one side of the support feet abuts, the other side of the support feet does not abut, the force on the first sliding rail is transferred to the second sliding rail, the multi-point dispersed force of the driving motor output is realized when the support feet on both sides reach the working position at different times, and the stable and rapid support is more beneficial to be realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 A perspective view of the OHT stable holding mechanism provided by the embodiment of the application is shown in the figure. Figure 2 A top view of the OHT stable holding mechanism provided by the embodiment of the application is shown in the figure. Figure 3 A schematic diagram of the operation principle of the OHT stable holding mechanism provided by the embodiment of the application is shown in the figure. Figure 4 A schematic diagram of the driving motor and the screw transmission connection of the OHT stable holding mechanism provided by the embodiment of the application is shown in the figure. Figure 5 A schematic diagram of the transmission connection of the elastic plunger of the OHT stable holding mechanism provided by the embodiment of the application is shown in the figure. Figure 6 A partial enlarged view of A in the figure. Figure 5 Figure 7 A schematic diagram of the overall structure of the material box conveying device provided by the embodiment of the application is shown in the figure. Figure 8 A schematic diagram of the partial structure of the material box conveying device provided by the embodiment of the application is shown in the figure.

[0018] ​In the figure: 100-OHT stable holding mechanism; 200-trolley track; 300-gantry; 400-ceiling; 500-main body; 600-material box; 700-trolley wheel; 110-first mounting plate; 120-first slide rail; 130-first sliding block; 140-supporting leg; 150-driving motor; 151-coupling; 160-screw rod; 161-elastic transmission unit; 1611-elastic plunger; 1611a-plunger bushing; 1611b-movable plunger; 1611c-spline structure; 16111-limiting shoulder; 16112-limiting block; 1612-first transmission gear disc; 1613-second transmission gear disc; 170-screw rod nut; 180-second mounting plate; 181-second slide rail; 182-second sliding block; 190-supporting piece. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below in conjunction with embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the field of the present application. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with meanings in the context of the prior art, and should not be interpreted to have idealized or overly formal meanings unless specifically defined as such herein.

[0021] Those skilled in the art can understand that, unless otherwise stated, the singular forms “a”, “an” and “the” used herein also include the plural forms. It should be further understood that the use of the phrase “comprising” in the specification of the present application means that the stated features, integers, steps, operations, elements, and / or components exist, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The phrase “and / or” used herein includes all or any single unit and all combinations of the associated listed items.

[0022] Combination Figures 1 to 6As shown, the embodiment of the present application provides an OHT stable holding mechanism 100 for realizing the stability of the OHT vehicle body when the center of gravity deviates during the loading or unloading of the material, which specifically comprises a first mounting plate 110, a driving motor 150 and a lead screw 160, and a second mounting plate 180. Wherein the first mounting plate 110 is used for the mounting plate connected with the OHT, and the first mounting plate 110 and the second mounting plate 180 are transversely connected through a support 190, so that the whole is a frame structure.

[0023] Specifically, the first mounting plate 110 is provided with a first sliding rail 120, which is located on one side of the mounting plate and is fixed by a bolt connector. Two first sliding blocks 130 are slidably arranged on the first sliding rail 120, and the first sliding blocks 130 are provided with support feet 140 away from the first mounting plate 110. The support feet of the two first sliding blocks 130 are respectively bent outward to abut against the trolley track 200 to realize the parking of the OHT, so as to stop the material box to the specified position.

[0024] The driving motor 150 in the embodiment comprises two synchronously rotating output shafts, which are respectively connected with the corresponding side lead screw 160 through the elastic transmission unit 161 to realize the transmission connection. In this way, the driving motor 150 can simultaneously drive the rotation of the lead screws 160 on both sides, and the rotation directions of the threads of the lead screws 160 on both sides are opposite. At the same time, the elastic transmission unit 161 can realize the independent driving operation of the first sliding rail 120 and the second sliding rail 181 with the driving motor 150. The lead screw 160 is provided with a lead screw nut 170, and the rotation of the lead screw 160 can be converted into the linear motion of the lead screw nut 170. Since the thread directions of the lead screws 160 on both sides are opposite, the linear motion directions of the corresponding lead screw nuts 170 are opposite. Since the lead screw nut 170 is connected with the support foot 140, the driving motor 150 can drive the two ends of the support foot 140 to move in opposite directions (away from each other or towards each other), so as to realize the abutment of the support foot 140 and the trolley track 200.

[0025] Further, in order to realize the floating installation of the driving motor 150, the second mounting plate 180 is provided with a second sliding rail 181, and the driving motor 150 is slidably connected with the second sliding rail 181 through a second sliding block 182. Since the second mounting plate 180 is connected with the first mounting plate 110 through the support 190 which spans above the driving motor 150, the driving motor 150 can float with the second sliding block 182, which is conducive to adjusting the abutment force of the support feet 140 on both sides.

[0026] The smooth mechanism provided by the embodiment is installed with a floating driving motor 150. The driving motor 150 is floatingly installed on the second sliding rail 181. When the support feet 140 on the two sides support the first side to reach the working position, the driving motor 150 is used as a floating part, and the second sliding block 182 slides on the second sliding rail 181. In this way, the stroke of the support feet 140 on the other side is increased, so that it can quickly reach the working position. This method can also achieve more balanced stress when the support feet 140 abut the OHT two-side trolley tracks 200. In this way, the abutting force difference between the two sides is not easy to occur, the track is not easy to deform, and other advantages are achieved. At the same time, the first sliding rail 120 cooperates with the first sliding block 130. When the support feet 140 on the two sides are not positioned at the same time, one side of the support feet 140 abuts, and the other side of the support feet 140 does not abut. In this way, the stress on the first sliding rail 120 can be transferred to the second sliding rail 181 through the setting of the second sliding rail 181, the multi-point dispersed stress of the output force of the driving motor 150 when the two sides are not positioned at the same time is realized, and stable and rapid support is more beneficial.

[0027] It should be noted that the support feet 140 quickly reach the working position, which can reduce the time of adjusting the abutment and improve the control efficiency. The driving motor 150 provided by the floating setting can reduce the action force of the motor output on the side of the first abutting track, and can use the action force to reversely drive the motor 150 to move, increase the stroke of the support feet 140 on the other side, and avoid the conventional motor fixed position mode. Because it is not possible to completely ensure that the two sides abut at the same time, in order to realize the abutment of the support feet 140 on the side of the track that is not abutted, the driving motor 150 needs to continuously output. The side that abuts first may continuously bear the action force when the motor continuously rotates, which causes the action force on one side to be too large, the trolley track 200 is deformed under stress, and the driving motor 150 may be reversely acted to cause motor overload, cause the transmission of the lead screw 160 to fail, and other problems.

[0028] In some embodiments, as Figure 4As shown, the elastic transmission unit 161 includes a first transmission gear disc 1612 and a second transmission gear disc 1613; the first transmission gear disc 1612 is engaged with the second transmission gear disc 1613. The output shaft of the driving motor 150 is connected with the first transmission gear disc 1612 through the elastic plunger 1611, and the second transmission gear disc 1613 is connected with the lead screw 160, so that when the supporting leg 140 on one side is in place, the engagement transmission between the first transmission gear disc 1612 and the second transmission gear disc 1613 cannot continue to push the supporting leg 140 on the corresponding side to move, and the tooth engagement between the two will slip. Since the output shaft of the driving motor 150 and the first transmission gear disc 1612 are flexibly connected through the elastic plunger 1611, the elastic plunger 1611 will shrink during the slipping process, so that the gear engagement between the first transmission gear disc 1612 and the second transmission gear disc 1613 is invalid. At the same time, the output shaft of the driving motor 150 and the first transmission gear disc 1612 are flexibly connected through the elastic plunger 1611, so that during use, the material is grabbed and placed, the gravity changes instantaneously, and the elastic plunger 1611 is elastically buffered to achieve the buffering of the impact on the driving motor 150, which is more beneficial to the protection of the driving motor 150.

[0029] The operation process of the stable mechanism will be described below: When the driving motor 150 rotates, the output shafts at both ends drive the lead screws 160 to rotate through the elastic transmission unit 161, and the lead screw nuts 170 on the lead screws 160 are displaced with the rotation of the lead screws 160, and drive the supporting legs 140 to slide along the first slide rails 120.

[0030] If the supporting legs 140 on both sides move to the position at the same time: when the supporting legs 140 on both sides reach the specified position at the same time, the OHT is fixed in the horizontal width direction, and the OHT can maintain the stability of the whole body to avoid tilting when loading and unloading the goods.

[0031] If the two support feet 140 are not moved to the position at the same time: when one of the support feet 140 (the first support foot 140) reaches the specified position, and the other support foot 140 (the second support foot 140) does not reach the specified position, the driving motor 150 is displaced to the side close to the second support foot 140 along the second sliding rail 181 under the reverse push of the first support foot 140, so as to shorten the distance between the specified position and the second support foot 140, until the second support foot 140 abuts against the target position. When the two support feet 140 are in place, if the driving motor 150 does not stop in time, the elastic transmission unit 161 is triggered under the reverse force of the support foot 140, the power transmission between the lead screw 160 and the output shaft of the driving motor 150 is cut off, so that the driving motor 150 is in an idle state, preventing the driving motor 150 from overloading and causing the lead screw 160 to fail to transmit power. The driving motor 150 is connected to the second sliding rail 181 through the second sliding block 182, and the driving motor 150 is connected to the second sliding rail 181 through the second sliding block 182, and the driving motor 150 is connected to the second sliding block 182. The floating design of the driving motor 150 helps to alleviate the stress impact on the side of the support foot 140 that is first contacted when the two support feet 140 are not moved to the position at the same time, and also avoids the start of the elastic transmission unit 161 caused by the increased stress on the side of the support foot 140 that is first contacted. The cooperation of the two is more conducive to the stable operation of the equipment.

[0032] In some embodiments, as shown in Figure 5 and Figure 6 The output shaft of the driving motor 150 is connected to one end of the elastic plunger 1611 through the shaft coupling 151, and the other end of the elastic plunger 1611 is connected to the first transmission gear disc 1612, so as to realize the flexible transmission connection between the driving motor 150 and the lead screw 160 through the elastic plunger 1611.

[0033] Specifically, the elastic plunger 1611 includes a plunger bushing 1611a and a movable plunger 1611b, one end of the shaft coupling 151 is connected to one end of the plunger bushing 1611a, an elastic damping buffer is arranged in the plunger bushing 1611a, the other end of the plunger bushing 1611a is connected to one end of the movable plunger 1611b through the spline structure 1611c, and the other end of the movable plunger 1611b is connected to the first transmission gear disc 1612.

[0034] Optionally, the inner side of the plunger bushing 1611a is provided with a limiting shoulder 16111, and the connecting shaft end of the movable plunger 1611b is provided with a plurality of limiting blocks 16112 distributed in the circumferential direction, and the limiting shoulder 16111 and the limiting blocks 16112 are matched and installed to realize transmission connection and axial limiting, so as to improve the connection stability between the elastic plunger 1611 and the first transmission gear disc 1612.

[0035] Optionally, the second transmission gear disc 1613 and the lead screw 160 on the other side of the driving motor 150 are connected in the same way to realize transmission matching connection, so as to realize the synchronous movement of the lead screw nuts 170 on both sides of the driving motor 150.

[0036] In this embodiment, when the output shaft of the driving motor 150 rotates, the first transmission gear disc 1612 and the second transmission gear disc 1613 are meshed to drive the transmission lead screw 160 to rotate, and the sliding block approaches the abutting position to realize abutting; after reaching the abutting position, the sliding block is engaged with the abutting position and cannot continue to move in the direction of the abutting position, the transmission lead screw 160 cannot rotate, and the second transmission gear disc 1613 cannot rotate. At this time, if the motor does not stop, the first transmission gear disc 1612 rotates relative to the second transmission gear disc 1613, so as to compress the elastic plunger 1611. The end of the elastic plunger 1611 moves along the limiting shoulder 16111 and the limiting block 16112 in the direction of the driving motor 150, that is, the transmission between the plunger bushing 1611a and the movable plunger 1611b is disconnected (power is cut off), the first transmission gear disc 1612 and the second transmission gear disc 1613 are out of gear, and further transmission cannot be realized, so as to cause the driving motor 150 to idle. This is conducive to protecting the driving motor 150 and avoiding the problems of overloading of the driving motor 150 and transmission failure of the lead screw 160.

[0037] Optionally, as shown in Figure 5 With the long running time, the running track 200 may be deformed, and the two sides may not be able to abut at the same time. The elastic plunger 1611 in this embodiment is adjustably connected to the output shaft of the coupling 151 through a fastening thread. The effective connection length of the elastic plunger 1611 is adjusted through the fastening thread, and the axial connection length of the driving motor 150 on both sides is adjusted, so as to facilitate the simultaneous abutment of the two sides. It should be noted that during actual operation, the abutment of the supporting foot 140 can be detected regularly. When it is found that the abutting feet on both sides cannot reach at the same time, the connection length of the elastic plunger 1611 and the coupling 151 can be adjusted. In this way, the connection mechanism of the entire lead screw 160 and the driving motor 150 does not need to be adjusted, the maintenance efficiency is improved, and the operation is convenient.

[0038] Optionally, as shown in Figure 1 and Figure 2As shown, the second mounting plate 180 is provided with a top screw adjusting component at each end along the direction parallel to the axis of the lead screw 160, the top screw adjusting component is mounted at each end of the second mounting plate 180 through a support, the top screw adjusting component is connected with the support through threads, the length of the top screw adjusting component extending into the inside of the support can be adjusted by rotating the top screw adjusting component, the second sliding block 182 is limited by the end of the top screw adjusting component, so as to adjust the maximum stroke position of the second sliding block 182 on the second sliding rail 181, and further limit and adjust the position of the movable motor, so that the motor position adjustment is more controllable, the adjustable range is larger, and more application scenarios can be met.

[0039] In some embodiments, the lead screw nut 170 is provided with an elastic buffer away from one side of the driving motor 150, the buffer can avoid the hard contact of the two supporting feet 140, effectively relieve the impact force, further improve the running stability of the mechanism, and also avoid the problem of lead screw nut 170 failure caused by rigid contact, and improve the safety of the mechanism operation. Optionally, the elastic buffer can be a spring or the like.

[0040] In some embodiments, the lower end of the supporting foot 140 extends downwardly and downwardly away from the driving motor 150, and the end is provided with a non-slip pad, which is beneficial to increase the friction force when abutting, thereby improving the control accuracy of the trolley parking position.

[0041] In some embodiments, one side of the supporting foot 140 is detachably connected with the first sliding block 130, the other side of the supporting foot 140 is provided with a positioning block, a plurality of positioning bolts are arranged on the positioning block, the plurality of positioning bolts are clamped with the lead screw nut 170, so that the first sliding block 130 is driven by the lead screw nut 170 to slide along the first sliding rail 120, the clamping mode can not only ensure the synchronous movement between the lead screw nut 170 and the first sliding block 130, but also realize quick disassembly and maintenance, and each component can be independently replaced, the use of connecting pieces can be reduced, and the cost can be reduced.

[0042] Optionally, the first sliding block is further provided with a detection plate extending transversely above the lead screw 160, and the side edge of the second mounting plate is further provided with a detection sensor for accurately detecting the position of the corresponding first sliding block, so as to facilitate the adjustment of the position of the supporting foot 140, and further ensure that the two supporting feet 140 abut the trolley sliding rail at the same time.

[0043] Based on the same inventive concept, like Figure 7 and Figure 8As shown, the embodiment of the present application also provides a material box conveying device, which comprises a travelling crane rail 200, a travelling crane wheel 700 and the OHT stable holding mechanism 100 as described in the foregoing embodiment. The travelling crane rail 200 is installed on the ceiling 400 of the clean room through a gantry 300. The first mounting plate 110 of the OHT stable holding mechanism 100 is connected with the connecting shaft of the travelling crane wheel 700. The supporting feet 140 of the stabilizing mechanism are used to abut against the inner side of the travelling crane rail 200 to realize parking. The main body part 500 of the material box conveying device is connected below the OHT stable holding mechanism 100. The main body part 500 is connected with the material box 600 through a mechanical transmission mechanism, so as to drive the material box 600 to move synchronously with the travelling crane rail 200 and to realize grabbing and other operations.

[0044] The material box conveying device provided by the embodiment of the present application comprises the OHT stable holding mechanism 100 as described in the foregoing embodiment. The driving motor 150 of the OHT stable holding mechanism 100 is floatingly installed on the second sliding rail 181. When the supporting feet 140 on the two sides reach the working position at different times, the driving motor 150 is used as a floating part to slide on the second sliding rail 181 through the second sliding block 182, so as to increase the stroke of the supporting feet 140 on the other side and enable the supporting feet 140 on the other side to quickly reach the working position. In addition, when the supporting feet 140 on the two sides abut against the travelling crane rails 200, the stress is more balanced, the abutment forces on the two sides are less different, the rails are less likely to be deformed and other advantages are realized. Meanwhile, the first sliding rail 120 is matched with the first sliding block 130. When the supporting feet 140 on the two sides do not reach the position at the same time, the supporting feet 140 on one side abut against the travelling crane rail 200, and the supporting feet 140 on the other side do not abut against the travelling crane rail 200. The stress on the first sliding rail 120 is transferred to the second sliding rail 181, so as to realize multi-point dispersion of the output force of the driving motor 150 when the supporting feet 140 on the two sides do not reach the position at the same time, and to more favorably realize stable and rapid support.

[0045] Those skilled in the art can understand that the steps, measures and schemes in the various operations, methods and processes discussed in the present application can be alternated, changed, combined or deleted. Further, other steps, measures and schemes in the various operations, methods and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined or deleted. Further, the steps, measures and schemes in the various operations, methods and processes in the prior art can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0046] In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the term "a plurality of" means two or more.

[0048] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. It should be understood that although each step in the flowchart of the drawings is shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and they can be executed in other order. Moreover, at least part of the steps in the flowchart of the drawings can include multiple sub-steps or multiple time periods, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or sub-steps or time periods of other steps.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An OHT stabilization mechanism, characterized in that, include: A first mounting plate is used to connect with the OHT. A first slide rail is provided on the first mounting plate. Two first sliders are slidably mounted on the first slide rail. Each of the two first sliders is provided with a support foot for abutting against the traveling rail. The system includes a drive motor and a lead screw, with the output shaft of the drive motor being connected to the lead screw. A lead screw nut is provided on the lead screw, and the lead screw nut is connected to the support legs, which are used to drive the support legs at both ends to move in opposite directions or towards each other via the drive motor. The second mounting plate is provided with a second slide rail. The drive motor is slidably mounted on the second slide rail via a second slider. The second mounting plate is connected to the first mounting plate via a support member spanning the drive motor.

2. The OHT stabilization mechanism according to claim 1, characterized in that, The output shaft of the drive motor is connected to the lead screw via an elastic transmission unit; the elastic transmission unit includes a first transmission gear plate and a second transmission gear plate; the first transmission gear plate meshes with the second transmission gear plate. The elastic transmission unit further includes an elastic plunger, and the output shaft of the drive motor is connected to the first transmission gear plate through the elastic plunger, while the second transmission gear plate is connected to the lead screw.

3. The OHT stabilization mechanism according to claim 2, characterized in that, The output shaft of the drive motor is connected to one end of the elastic plunger via a coupling. The elastic plunger includes a plunger bushing and a movable plunger. One end of the coupling is threadedly connected to one end of the plunger bushing, and the other end of the plunger bushing is drivenly connected to one end of the movable plunger through a spline structure. The other end of the movable plunger is connected to the first transmission gear plate.

4. The OHT stabilization mechanism according to claim 3, characterized in that, The inner side of the plunger bushing is provided with a limiting shoulder, and the end of the connecting shaft of the movable plunger is provided with a limiting block. The transmission connection and axial limiting are achieved by the cooperation of the limiting shoulder and the limiting block.

5. The OHT stabilization mechanism according to claim 3, characterized in that, The elastic plunger is adjustablely connected to the output shaft of the coupling via a fastening thread.

6. The OHT stabilizing mechanism according to any one of claims 1 to 5, characterized in that, The second mounting plate is provided with set screw adjustment components at both ends along the direction parallel to the lead screw axis. The set screw adjustment components are mounted at both ends of the second mounting plate by brackets and are used to adjust the maximum stroke position of the second slider on the second slide rail.

7. The OHT stabilization mechanism according to claim 1, characterized in that, The drive motor is a dual-axis motor, and the two output shafts of the dual-axis motor rotate in the same direction, while the threads of the lead screws that connect the two output shafts rotate in opposite directions.

8. The OHT stabilization mechanism according to claim 1, characterized in that, The support end of the support foot extends downward at an angle away from the drive motor, and the support end is provided with a protective pad.

9. The OHT stabilization mechanism according to claim 1, characterized in that, One side of the support foot is detachably connected to the first slider, and the other side of the support foot is provided with a positioning block. The positioning block is provided with multiple positioning bolts, which are engaged with the lead screw nut.

10. A material box transport device, characterized in that, include: The OHT stabilizing mechanism as described in any one of claims 1 to 9.

Images