Oht stable holding mechanism and magazine transport device

Abstract

The present application relates to the technical field of OHT equipment, and provides an OHT stable holding mechanism and a material box conveying device, wherein the driving motor of the OHT stable holding mechanism is floatingly installed on the second sliding rail, when the support feet on the two 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 support feet can be more balanced when abutting against the two tracks, the abutting force difference of the two sides is smaller, 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 the two sides do not reach the position at the same time, one side of the support feet abuts, the other side of the support feet does not abut, the stress part on the first sliding rail is transferred to the second sliding rail, the multi-point dispersed stress of the driving motor output force when the two sides do not reach the position at the same time is realized, and this is more beneficial to realize stable and rapid support.

Description

Technical Field

[0001] This invention relates to the field of OHT equipment technology, and in particular to an OHT stabilization mechanism and a material box conveying device. Background Technology

[0002] In the semiconductor industry, wafer fabs commonly use Automated Material Handling Systems (AMHS) to improve factory automation and more intelligently manage the transportation of materials and process flows within the plant. Overhead Hoist Transport (OHT) is an important subsystem of the AMHS, primarily responsible for transporting fodder boxes (FOUPs) to different process equipment or storage facilities.

[0003] Because the OHT's operating track is suspended from the cleanroom ceiling, it relies on four wheels for support. Currently, the market increasingly emphasizes lightweight design for OHTs to increase handling speed and reduce energy consumption, resulting in a decrease in the overall weight of the OHT. This necessitates a reassessment of its operational stability. When the OHT extends its robotic arm to pick up materials, its center of gravity shifts as the arm extends, causing the OHT to tilt slightly in the direction of arm extension. Summary of the Invention

[0004] The purpose of this invention is to provide an OHT stabilization mechanism and a hopper transport device to solve the problem of poor stability caused by the lightweight design of existing OHT mechanisms.

[0005] In a first aspect, the present invention provides an OHT stabilization mechanism, comprising:

[0006] A first mounting plate is used to connect with an 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 travel rail.

[0007] 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 either opposite or facing each other, so as to drive the support legs at both ends to move in opposite directions via the drive motor.

[0008] 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 above the drive motor.

[0009] Optionally, 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, the output shaft of the drive motor is connected to the first transmission gear plate via the elastic plunger, and the second transmission gear plate is connected to the lead screw.

[0010] Optionally, 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. The other end of the plunger bushing is drivenly connected to one end of the movable plunger via a spline structure. The other end of the movable plunger is connected to the first transmission gear plate.

[0011] Optionally, a limiting shoulder is provided on the inner side of the plunger bushing, and a limiting block is provided at the end of the connecting shaft of the movable plunger. The transmission connection and axial limiting are achieved by the cooperation of the limiting shoulder and the limiting block.

[0012] Optionally, the resilient plunger is adjustablely connected to the output shaft of the coupling via a fastening thread.

[0013] Optionally, 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.

[0014] Optionally, the drive motor is a dual-axis motor, wherein the two output shafts of the dual-axis motor rotate in the same direction, and the threads of the lead screws connecting the two output shafts rotate in opposite directions.

[0015] Optionally, 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.

[0016] Optionally, 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, which is provided with a plurality of positioning bolts, and is engaged with the lead screw nut by the plurality of positioning bolts.

[0017] In a second aspect, the present invention also provides a tin transport device, comprising: an OHT stabilizing mechanism as described in the first aspect.

[0018] This invention has at least the following technical effects:

[0019] The OHT stabilizing mechanism and hopper transport device provided by this invention have a drive motor floatingly mounted on a second slide rail. When either of the two support legs reaches the working position first, the drive motor acts as a floating component, sliding on the second slide rail via a second slider. This increases the stroke of the other support leg, allowing it to quickly reach the working position. It also ensures more balanced force distribution when the support leg contacts the two sides of the carriage rail, with less difference in contact force between the two sides, and the rails are less prone to deformation. Simultaneously, the first slide rail cooperates with the first slider. When the two support legs do not arrive at the working position simultaneously, one support leg contacts the other, transferring part of the force on the first slide rail to the second slide rail. This achieves multi-point distribution of the drive motor's output force when the two sides do not arrive at the working position simultaneously, which is more conducive to achieving stable and rapid support. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of an OHT stabilization mechanism provided in an embodiment of the present invention;

[0022] Figure 2 A top view of an OHT stabilization mechanism provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram illustrating the operating principle of an OHT stabilization mechanism provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the drive motor and lead screw transmission connection of an OHT stabilizing and holding mechanism provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the transmission connection of the elastic plunger in an OHT stabilizing mechanism provided in an embodiment of the present invention;

[0026] Figure 6 Provided for embodiments of the present invention Figure 5 A magnified view of part A in the image;

[0027] Figure 7 This is a schematic diagram of the overall structure of a material box transport device provided in an embodiment of the present invention;

[0028] Figure 8This is a partial structural schematic diagram of a material box transport device provided in an embodiment of the present invention.

[0029] In the diagram: 100-OHT stabilizing mechanism; 200-Crane track; 300-Gantry frame; 400-Ceiling; 500-Main body; 600-Material box; 700-Crane wheel;

[0030] 110-First mounting plate; 120-First slide rail; 130-First slider; 140-Support foot; 150-Drive motor; 151-Coupling; 160-Lead screw; 161-Elastic transmission unit; 1611-Elastic plunger; 1611a-Plunger bushing; 1611b-Moving plunger; 1611c-Spline structure; 16111-Limit shoulder; 16112-Limit stop; 1612-First transmission gear plate; 1613-Second transmission gear plate; 170-Lead screw nut; 180-Second mounting plate; 181-Second slide rail; 182-Second slider; 190-Support member. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0033] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0034] Combination Figures 1 to 6As shown, this embodiment of the invention provides an OHT stabilization mechanism 100, which is used to maintain the stability of the OHT vehicle body when the center of gravity shifts during loading or unloading of materials. Specifically, it includes: a first mounting plate 110, a drive motor 150, a lead screw 160, and a second mounting plate 180. The first mounting plate 110 is used to connect to the OHT, and the first mounting plate 110 and the second mounting plate 180 are laterally connected by a support member 190, forming a frame structure.

[0035] Specifically, a first slide rail 120 is provided on the first mounting plate 110. The first slide rail 120 is located on one side of the mounting plate and is fixed by bolts. Two first sliders 130 are slidably mounted on the first slide rail 120. Support feet 140 are provided on the side of the first sliders 130 away from the first mounting plate 110. The support feet corresponding to the two first sliders 130 are bent outward to abut against the traveling rail 200 to stop the OHT and thus stop the material box at the designated position.

[0036] In this embodiment, the drive motor 150 includes two synchronously rotating output shafts. These two output shafts are respectively connected to the corresponding lead screws 160 via elastic transmission units 161. Thus, the drive motor 150 can simultaneously drive the lead screws 160 on both sides to rotate, and the screw threads of the lead screws 160 on both sides rotate in opposite directions. At the same time, the elastic transmission units 161 can realize the independent driving operation of the first slide rail 120 and the second slide rail 181 with the drive motor 150. A lead screw nut 170 is provided on the lead screw 160. The rotational motion of the lead screw 160 can be converted into the linear motion of the lead screw nut 170. Since the screw threads of the lead screws 160 on both sides are in opposite directions, the linear motion directions of the lead screw nuts 170 on the corresponding sides are opposite. Since the lead screw nut 170 is connected to the support foot 140, the drive motor 150 can drive the support feet 140 at both ends to move in opposite directions (towards or towards each other), thereby realizing the contact between the support feet 140 and the traveling rail 200.

[0037] Furthermore, in order to achieve the floating installation of the drive motor 150, a second slide rail 181 is provided on the second mounting plate 180. The drive motor 150 is slidably connected to the second slide rail 181 through the second slider 182. Since the second mounting plate 180 is connected to the first mounting plate 110 through the support member 190 spanning above the drive motor 150, the drive motor 150 can float with the second slider 182, which is beneficial to adjusting the abutment force of the support feet 140 on both sides.

[0038] The stabilizing mechanism provided in this embodiment uses a floating drive motor 150, which is floatingly mounted on the second slide rail 181. When either of the two support legs 140 reaches the working position first, the drive motor 150 acts as a floating component, sliding on the second slide rail 181 via the second slider 182. This increases the travel of the other support leg 140, allowing it to quickly reach the working position. This method also ensures a more balanced force when the support leg 140 abuts against the OHT travel rails 200 on both sides. It has advantages such as less difference in the force between the two sides and less deformation of the track; at the same time, the first slide rail 120 cooperates with the first slider 130. When the support feet 140 on both sides are not in place at the same time, one support foot 140 abuts while the other support foot 140 does not abut. In this way, the force on the first slide rail 120 can be transferred to the second slide rail 181 by setting the second slide rail 181. This realizes the multi-point distribution of the force output by the drive motor 150 when the two sides are not in place at the same time, which is more conducive to achieving stable and fast support.

[0039] It should be noted that the support foot 140 can quickly reach the working position, which can reduce the adjustment and contact time and improve control efficiency. In addition, the floating drive motor 150 can reduce the force of the motor output on the side that first contacts the track, and can use its force to drive the motor 150 to move in the opposite direction, increasing the stroke of the other support foot 140. This avoids the conventional method of fixing the motor position. Since it is not possible to ensure that both sides contact simultaneously during contact, the drive motor 150 needs to continuously output in order to make the support foot 140 on the side that does not contact the track contact. During contact, the side that first contacts the track may experience an increasing force as the motor continues to rotate, resulting in excessive force on one side, deformation of the traveling track 200, and may also have a reaction effect on the drive motor 150, causing motor overload and failure of the lead screw 160 transmission.

[0040] In some embodiments, such as Figure 4As shown, the elastic transmission unit 161 includes a first transmission gear 1612 and a second transmission gear 1613; the first transmission gear 1612 meshes with the second transmission gear 1613. The output shaft of the drive motor 150 is connected to the first transmission gear 1612 via an elastic plunger 1611, and the second transmission gear 1613 is connected to the lead screw 160. Thus, when one side of the support leg 140 is in position, the meshing transmission between the first transmission gear 1612 and the second transmission gear 1613 cannot continue to push the corresponding side of the support leg 140 to move, and the gear meshing between them will slip. Since the output shaft of the drive motor 150 and the first transmission gear 1612 are flexibly connected via the elastic plunger 1611, the elastic plunger 1611 will contract during the slippage process, thereby causing the gear meshing between the first transmission gear 1612 and the second transmission gear 1613 to fail. Meanwhile, the output shaft of the drive motor 150 and the first transmission gear plate 1612 are flexibly connected by an elastic plunger 1611. During use, when gripping and releasing materials, the gravity changes instantaneously. The elasticity of the elastic plunger 1611 buffers the impact on the drive motor 150, which is more conducive to protecting the drive motor 150.

[0041] The operation process of the stabilizing mechanism is explained in detail below:

[0042] When the drive motor 150 rotates, the output shafts at both ends drive the lead screw 160 to rotate through the elastic transmission unit 161. The lead screw nut 170 on the lead screw 160 is displaced as the lead screw 160 rotates, and at the same time, it drives the support foot 140 to slide along the first slide rail 120.

[0043] If the support feet 140 on both sides move into place at the same time: When the support feet 140 on both sides reach the designated position at the same time, the horizontal width of the OHT is fixed. When loading and unloading goods, the OHT can maintain overall stability and avoid tilting to the side of the center offset.

[0044] If the two support legs 140 do not move into position simultaneously: when one support leg 140 (the first support leg 140) reaches the designated position while the other support leg 140 (the second support leg 140) has not, the drive motor 150, under the reverse push of the first support leg 140, moves along the second slide rail 181 towards the side closer to the second support leg 140, thereby shortening the distance between the designated position and the second support leg 140 until the second support leg 140 abuts against the target position. When both support legs 140 are in position, if the drive motor 150 does not stop in time, the elastic transmission unit 161 is triggered under the reverse force of the support legs 140, cutting off the power transmission between the lead screw 160 and the output shaft of the drive motor 150, so that the drive motor 150 is unloaded, preventing the drive motor 150 from overloaded and causing the lead screw 160 to fail. The drive motor 150 is slidably connected to the second slide rail 181 via the second slider 182. The floating design of the drive motor 150 helps to alleviate the impact on the side of the support foot 140 that contacts the first when the two support feet 140 do not arrive at the same time. It also avoids the increased force on the side of the support foot 140 that contacts the first, which would cause the elastic transmission unit 161 to start. The combination of the two is more conducive to the stable operation of the equipment.

[0045] In some embodiments, such as Figure 5 and Figure 6 As shown, the output shaft of the drive motor 150 is connected to one end of the elastic plunger 1611 via the coupling 151, and the other end of the elastic plunger 1611 is connected to the first transmission gear plate 1612, thereby realizing a flexible transmission connection between the drive motor 150 and the lead screw 160 through the elastic plunger 1611.

[0046] Specifically, the elastic plunger 1611 includes a plunger bushing 1611a and a movable plunger 1611b. One end of the coupling 151 is connected to one end of the plunger bushing 1611a. An elastic damping mechanism is provided inside the plunger bushing 1611a to achieve buffering. The other end of the plunger bushing 1611a is connected to one end of the movable plunger 1611b via a spline structure 1611c. The other end of the movable plunger 1611b is connected to the first transmission gear disk 1612.

[0047] Optionally, a limiting shoulder 16111 is provided on the inner side of the plunger bushing 1611a, and multiple limiting blocks 16112 distributed circumferentially are provided at the connecting shaft end of the movable plunger 1611b. The transmission connection and axial limiting are achieved by the cooperation of the limiting shoulder 16111 and the limiting block 16112, which helps to improve the connection stability between the elastic plunger 1611 and the first transmission gear plate 1612.

[0048] Optionally, the second transmission gear plate 1613 and the lead screw 160 on the other side of the drive motor 150 are connected in the same way to achieve transmission and engagement, thereby realizing the synchronous movement of the lead screw nuts 170 on both sides of the drive motor 150.

[0049] In this embodiment, when the output shaft of the drive motor 150 rotates, it drives the first transmission gear 1612 and the second transmission gear 1613 to mesh, causing the transmission screw 160 to rotate and drive the slider to approach the contact position to achieve contact. After reaching the contact position, the slider engages with the contact position and cannot continue to move towards the contact position. The transmission screw 160 cannot rotate, causing the second transmission gear 1613 to be unable to rotate. If the motor does not stop at this time, the first transmission gear 1612 rotates relative to the second transmission gear 1613, thereby compressing the elastic plunger 1611. The end of the piston 1611 moves towards the drive motor 150 along the mating surface of the limiting shoulder 16111 and the limiting stop 16112 and the axial direction of the lead screw 160. At this time, the transmission between the piston bushing 1611a and the movable piston 1611b is separated (power is cut off), and the first transmission gear 1612 and the second transmission gear 1613 skip teeth and cannot achieve further transmission, thus causing the drive motor 150 to idle. This helps to protect the drive motor 150 and avoid problems such as overload of the drive motor 150 and failure of the lead screw 160 transmission caused by continued transmission.

[0050] Optionally, such as Figure 5 As shown, with prolonged operation, deformation of the traveling track 200 may occur, potentially causing the two sides to fail to engage simultaneously. In this embodiment, the elastic plunger 1611 and the output shaft of the coupling 151 are connected by a fastening thread for an adjustable connection. By adjusting the effective connection length of the elastic plunger 1611 through the fastening thread, the axial connection length on both sides of the drive motor 150 can be adjusted, thus facilitating simultaneous engagement on both sides. It should be noted that during actual operation, the engagement of the support feet 140 can be periodically checked. If it is found that the two engagement feet cannot reach simultaneously, the connection length between the elastic plunger 1611 and the coupling 151 can be adjusted. This eliminates the need to adjust the entire connection mechanism of the lead screw 160 and the drive motor 150, improving maintenance efficiency and simplifying operation.

[0051] Optionally, such as Figure 1 and Figure 2As shown, the second mounting plate 180 is provided with set screw adjustment components at both ends along the direction parallel to the axis of the lead screw 160. The set screw adjustment components are mounted on both ends of the second mounting plate 180 through brackets. The set screw adjustment components are connected to the brackets through threads. By rotating the set screw adjustment components, the length of the components extending into the support frame can be adjusted. The end of the set screw adjustment components limits the second slider 182, thereby adjusting the maximum stroke position of the second slider 182 on the second slide rail 181. This limits and adjusts the position of the movable motor, making the motor position adjustment more controllable and the adjustable range larger, thus meeting more application scenarios.

[0052] In some embodiments, an elastic buffer is provided on the side of the lead screw nut 170 away from the drive motor 150. By providing the buffer, hard contact between the support feet 140 on both sides can be avoided, which can effectively alleviate the impact force and further improve the smoothness of the mechanism's operation. At the same time, it can also avoid the problem of lead screw nut 170 failure caused by rigid contact, thereby improving the safety of the mechanism's operation. Optionally, the elastic buffer can be a spring or other components.

[0053] In some embodiments, the lower end of the support foot 140 extends downward at an angle away from the drive motor 150, and the end is provided with an anti-slip pad. The anti-slip pad helps to increase the friction when in contact, thereby improving the accuracy of the car's parking position control.

[0054] In some embodiments, one side of the support foot 140 is detachably connected to the first slider 130, and the other side of the support foot 140 is provided with a positioning block. The positioning block is provided with a plurality of positioning bolts, which are engaged with the lead screw nut 170. Thus, the lead screw nut 170 drives the first slider 130 to slide along the first slide rail 120. The engaging method can ensure the synchronous movement between the lead screw nut 170 and the first slider 130, and also enable quick disassembly and maintenance. Furthermore, each component can be replaced independently, and the use of connecting parts can be reduced, which is beneficial to reducing costs.

[0055] Optionally, the first slider is also provided with a detection plate, which extends laterally above the lead screw 160. The side of the second mounting plate is also provided with a detection sensor, which is used to align with the detection plate to accurately detect the position of the corresponding first slider, thereby facilitating the adjustment of the position of the support foot 140 and ensuring that the support feet 140 on both sides simultaneously abut against the traveling rail.

[0056] Based on the same inventive concept, such as Figure 7 and Figure 8As shown in the figure, this embodiment of the invention also provides a material box transport device, including: a traveling track 200, traveling wheels 700, and an OHT stabilizing mechanism 100 as described in the previous embodiment. The traveling track 200 is installed on the ceiling 400 of the clean room via a gantry frame 300. The first mounting plate 110 of the OHT stabilizing mechanism 100 is connected to the connecting shaft of the traveling wheels 700. The support foot 140 of the stabilizing mechanism is used to abut against the inner side of the traveling track 200 to achieve stopping. The main body 500 of the material box transport device is connected below the OHT stabilizing mechanism 100. The main body 500 is connected to the material box 600 via a mechanical transmission mechanism, thereby driving the material box 600 to move synchronously with the traveling track 200 and to perform operations such as gripping.

[0057] The material box transport device provided in this embodiment of the invention includes the OHT stabilizing and holding mechanism 100 described in the aforementioned embodiment. The drive motor 150 of the OHT stabilizing and holding mechanism 100 is floatingly mounted on the second slide rail 181. When either of the two support legs 140 reaches the working position first, the drive motor 150 will act as a floating component, sliding on the second slide rail 181 via the second slider 182, increasing the stroke of the other support leg 140, enabling it to quickly reach the working position, and also allowing the support leg 140 to... When it comes into contact with the two side rails 200, the force is more balanced, the difference in the contact force between the two sides is small, and the rails are not easily deformed. At the same time, the first slide rail 120 cooperates with the first slider 130. When the two side support feet 140 are not in place at the same time, one side support foot 140 is in contact while the other side support foot 140 is not in contact. This transfers part of the force on the first slide rail 120 to the second slide rail 181. This realizes multi-point distribution of the force output by the drive motor 150 when the two sides are not in place at the same time, which is more conducive to achieving stable and rapid support.

[0058] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0059] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 invention.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0061] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0062] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. It should be understood that although the steps in the flowcharts of the accompanying drawings are shown sequentially as indicated by the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless expressly stated herein, there is no strict order restriction on the execution of these steps, and they may be performed in other orders. Moreover, at least some steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple time periods, which are not necessarily completed at the same time, but may be executed at different times, and their execution order is not necessarily sequential, but may be performed alternately or in turn with other steps or at least a portion of the sub-steps or time periods of other steps.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

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 that spans the drive motor. 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 also includes an elastic plunger, the output shaft of the drive motor is connected to the first transmission gear plate via the elastic plunger, and the second transmission gear plate is connected to the lead screw.

2. The OHT stabilization mechanism according to claim 1, 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.

3. The OHT stabilization mechanism according to claim 2, 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.

4. The OHT stabilization mechanism according to claim 2, characterized in that, The elastic plunger is adjustablely connected to the output shaft of the coupling via a fastening thread.

5. The OHT stabilizing mechanism according to any one of claims 1 to 4, 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.

6. 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.

7. 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.

8. 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.

9. A material box transport device, characterized in that, include: The OHT stabilizing mechanism as described in any one of claims 1 to 8.

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