Supporting wheel mechanism and automobile carrier

Abstract

The supporting wheel mechanism comprises a swing seat, a bearing shaft, a swing shaft and a plurality of supporting wheel assemblies, and the bearing shaft penetrates through the swing seat and is rotationally connected with the swing seat; the swing shaft penetrates through the swing seat and is rotationally connected with the swing seat, the swing shaft and the bearing shaft are arranged in a staggered mode in the height direction of the swing seat, and the axial direction of the swing shaft is perpendicular to the axial direction of the bearing shaft; the multiple supporting wheel assemblies are arranged on the two sides of the swing base in the axial direction of the swing shaft and rotationally connected with the swing shaft. The multiple supporting wheel assemblies can swing with the swing shaft as the rotating center line, and the multiple supporting wheel assemblies can swing with the bearing shaft as the rotating center line through the swing base. When the supporting wheel mechanism walks on a convex walking surface, a concave walking surface or an uneven walking surface, the multiple supporting wheel assemblies can make contact with the walking surface all the time, and therefore it can be guaranteed that the supporting wheel mechanism plays a supporting role.

Description

Technical Field

[0001] This utility model belongs to the field of automobile handling technology, and in particular relates to a support wheel mechanism and an automobile handling device. Background Technology

[0002] With the advent of intelligent manufacturing and Industry 4.0, automated material handling systems have become an indispensable and important component of modern manufacturing. AGVs (Automated Guided Vehicles), with their high efficiency, flexibility, and intelligence, are playing an increasingly important role in fields such as intelligent parking garages, material handling, and production line integration.

[0003] Currently, existing automated guided vehicles (AGVs) typically have a support wheel mechanism between the two drive wheel mechanisms to assist in supporting the AGV's frame. However, whether in smart garages or factory warehouses, the running surface for AGVs is often uneven, and this unevenness affects the AGV's movement. When the AGV encounters a concave running surface, the support wheels in the AGV's support wheel mechanism cannot make contact with the running surface and therefore cannot provide support. The weight is concentrated on the drive wheels of the drive wheel mechanism, which can shorten the lifespan of the drive wheels and damage the AGV's equipment. When the AGV encounters a convex running surface, the support wheels in the AGV's support wheel mechanism will tilt and become unbalanced, reducing the stability of the AGV during movement. Utility Model Content

[0004] In view of this, it is necessary to provide a support wheel mechanism and a car transporter that can be adapted to uneven running surfaces.

[0005] A support wheel mechanism, the support wheel mechanism comprising:

[0006] Swing seat;

[0007] A load-bearing shaft is provided through the swing seat and rotatably connected to the swing seat;

[0008] A swing shaft passes through the swing seat and is connected to the swing seat. The swing shaft and the load-bearing shaft are offset in the height direction of the swing seat, and the axial direction of the swing shaft is perpendicular to the axial direction of the load-bearing shaft.

[0009] Multiple support wheel assemblies are arranged on both sides of the swing seat along the axial direction of the swing shaft, and are respectively rotatably connected to the swing shaft;

[0010] The plurality of support wheel assemblies are capable of swinging about the swing axis as the rotation center line, and the plurality of support wheel assemblies are capable of swinging about the load-bearing axis through the swing seat.

[0011] Understandably, multiple support wheel assemblies can swing around mutually perpendicular load-bearing axes and swing axes as rotation center lines, so that when the support wheel mechanism travels on raised, recessed, or uneven travel surfaces, the multiple support wheel assemblies can always be in contact with the travel surface. This ensures the auxiliary support function that the support wheel mechanism can play and improves the stability of the car transporter with the support wheel mechanism when traveling on the travel surface.

[0012] In one embodiment, the support wheel assembly includes a support wheel mounting base and a plurality of support wheel groups, the plurality of support wheel groups being arranged on both sides of the swing shaft along the axial direction of the load-bearing shaft and respectively connected to the support wheel mounting base; wherein, the support wheel mounting base is provided with an extension protrusion, the extension protrusion being rotatably connected to the swing shaft.

[0013] In one embodiment, the support wheel mechanism further includes a plurality of floating mechanisms, which are arranged on both sides of the load-bearing shaft along the axial direction of the load-bearing shaft and are respectively connected to the load-bearing shaft in a circumferential limiting manner.

[0014] In one embodiment, the floating mechanism includes a floating mounting base, on which the load-bearing shaft is mounted and circumferentially limited relative to the floating mounting base;

[0015] The floating mounting base can be adjusted in position along the height of the swing base under the drive of the load-bearing shaft.

[0016] It is understandable that using a floating mounting base to adjust the height of the support wheel mechanism during movement can further ensure that the support wheel assembly remains in contact with the walking surface when walking on raised, recessed, or uneven surfaces, and provides auxiliary support for the vehicle transporter.

[0017] In one embodiment, the floating mechanism further includes an elastic element connected to the floating mount in a pre-compressed manner to provide a vertical elastic force to the floating mount.

[0018] Understandably, the use of pre-compressed elastic elements to provide vertical elastic force to the floating mount ensures contact between the support wheel assembly and the running surface.

[0019] In one embodiment, the floating mechanism further includes an upper mounting plate and a lower mounting plate;

[0020] The floating mounting base is disposed between the upper mounting plate and the lower mounting plate; one end of the elastic member away from the floating mounting base abuts against the upper mounting plate, thereby forming a first elastic gap between the floating mounting base and the upper mounting plate.

[0021] And / or, one end of the elastic member away from the upper mounting plate is connected to the floating mounting base, so that a second elastic gap is formed between the floating mounting base and the lower mounting plate.

[0022] In one embodiment, the floating mechanism further includes a connecting guide post disposed between the upper mounting plate and the lower mounting plate, and connected to the upper mounting plate and the lower mounting plate respectively; the elastic element is fitted onto the connecting guide post, and the floating mounting base is slidably connected to the connecting guide post.

[0023] It is understandable that the sliding connection between the floating mount and the connecting guide post serves to guide the lifting and lowering adjustment of the floating mount and ensures that the floating mount is always subjected to the elastic force in the vertical direction of the elastic element.

[0024] In one embodiment, the number of connecting guide posts is configured to be multiple, and at least some of the multiple connecting guide posts are respectively fitted with graphite copper sleeves, and the connecting guide posts can be slidably connected to the floating mounting base through the graphite copper sleeves.

[0025] Understandably, the structural characteristics of the graphite copper sleeve can reduce the resistance encountered by the floating mounting base during lifting and lowering adjustments.

[0026] In one embodiment, the upper mounting plate extends outward relative to the lower mounting plate in a direction away from the swing seat.

[0027] It is understandable that by utilizing the portion of the upper mounting plate that extends beyond the lower mounting plate, the support wheel mechanism can be assembled on the car transporter using the upper mounting plate as the mounting base, thus facilitating the assembly and application of the support wheel mechanism in the car transporter.

[0028] In one embodiment, the floating mechanism further includes a pressure block, which is threadedly connected to the floating mounting base and is used to press and limit the portion of the load-bearing shaft located on the floating mounting base.

[0029] The pressure block has a first plane, the load-bearing shaft has a second plane, and the first plane and the second plane are in contact.

[0030] It is understandable that the load-bearing shaft is pressed and limited to the floating mounting plate by the pressure block, which facilitates the assembly and connection of the load-bearing shaft on the floating mounting plate.

[0031] In addition, this application also provides an automobile transporter, including a frame, two sets of drive wheel mechanisms, and the aforementioned support wheel mechanism;

[0032] Both sets of the drive wheel mechanism and the support wheel mechanism are mounted on the vehicle frame to support the vehicle frame.

[0033] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0034] The support wheel mechanism and car transporter claimed in this application allow multiple support wheel assemblies to oscillate horizontally and vertically about mutually perpendicular load-bearing shafts and swing shafts as rotation centers. Vertical oscillation refers to rotation about the swing shaft along the load-bearing shaft axis upwards, while horizontal oscillation refers to rotation about the load-bearing shaft axis perpendicular to the load-bearing shaft axis (i.e., the swing shaft axis). This ensures that the multiple support wheel assemblies are always in contact with the travel surface when the support wheel mechanism travels on raised, recessed, or uneven travel surfaces. This ensures the auxiliary support function of the support wheel mechanism and improves the stability of the car transporter using the support wheel mechanism when traveling on a travel surface. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the car transporter provided in this application when it travels on the running surface.

[0037] Figure 2 This is a schematic diagram of the structure of the car transporter provided in this application when picking up a car.

[0038] Figure 3 The diagram below shows the structure of the car transporter provided in this application, in which the distance between the two clamping arm mechanisms is the largest.

[0039] Figure 4 This is a schematic diagram of the structure of the car transporter provided in this application, in which the distance between the two clamping arm mechanisms is adjusted.

[0040] Figure 5 This is a bottom view of the drive wheel mechanism in this application.

[0041] Figure 6 This is a top view of the drive wheel mechanism in this application.

[0042] Figure 7 This is a left view of the drive wheel mechanism in this application.

[0043] Figure 8 This is a schematic diagram of the clamping arm mechanism, the wheelbase adjustment mechanism, and the chain assembly in this application, wherein the clamping arm mechanism is in the open state.

[0044] Figure 9 This is a schematic diagram of the clamping arm mechanism, the wheelbase adjustment mechanism, and the chain assembly in this application, wherein the clamping arm mechanism is in a folded state.

[0045] Figure 10 This is a schematic diagram of the clamping arm mechanism of this application.

[0046] Figure 11 This is a schematic diagram of the structure of the wheelbase adjustment mechanism and the chain during assembly in this application.

[0047] Figure 12 This is a schematic diagram of the structure of the drive sprocket, idler sprocket, and chain in this application.

[0048] Figure 13 This is a top view of the support wheel mechanism in this application.

[0049] Figure 14 This is a schematic diagram of the support wheel mechanism in this application.

[0050] Figure 15 This is a left view of the support wheel mechanism in this application.

[0051] Figure 16 This is a schematic diagram of the structure of the load-bearing shaft and the transmission shaft in this application when they are assembled and connected by a swing seat.

[0052] Figure 17 This is a cross-sectional view of the floating mechanism in this application.

[0053] Figure 18 This is a schematic diagram of the support wheel mechanism in this application.

[0054] Figure 19 This is a partial sectional view of the support wheel mechanism in this application when it travels on the raised walking surface.

[0055] Figure 20 for Figure 19 A cross-sectional view of the corresponding floating mechanism.

[0056] Figure 21 This is a partial cross-sectional view of the support wheel mechanism in this application when it travels on the recessed walking surface.

[0057] Figure 22 for Figure 21 A cross-sectional view of the corresponding floating mechanism.

[0058] Figure 23 This is a partial sectional view of the support wheel mechanism in this application when it travels on an uneven walking surface.

[0059] Reference numerals: 100, Car transporter; 10, Frame; 11, Body slide rail; 12, Chain; 121, Chain tie rod; 20, Drive wheel mechanism; 21, Drive wheel set; 211, Drive wheel; 212, Drive motor; 213, Drive reducer; 22, Connecting frame; 23, Connecting shaft; 24, Slewing support assembly; 240, Encoder; 241, Slewing support mounting base; 242, Slewing support; 2421, Ring gear; 243, Encoder gear; 25, Drive mounting plate; 251, Hinge 252. Guide shaft bearing; 26. Drive floating assembly; 261. Guide shaft; 2611. Limiting plate; 2612. Lower cover; 262. Elastic element; 263. Floating pressure plate; 264. Connecting column; 30. Clamping arm mechanism; 301. Roller; 302. Photoelectric switch; 3021. Mounting plate; 310. Clamping arm frame; 3101. First trigger plate; 3102. Second trigger plate; 31. Robotic arm swing arm; 311. Arc gear; 32. Second rotary drive component; 321. Motor mounting plate; 33. Synchronous transmission assembly; 331, ball screw; 332, first coupling; 333, second reducer; 334, synchronous shaft; 335, second coupling; 34, rack; 40, wheelbase adjustment mechanism; 41, drive sprocket; 411, transmission shaft; 4111, rigid coupling; 4112, universal coupling; 42, first rotary drive component; 421, third reducer; 422, mounting base; 43, idler sprocket; 50, control module; 60, support wheel mechanism; 61, swing seat; 62, load-bearing shaft; 621. Second plane; 63. Swing shaft; 64. Support wheel assembly; 641. Support wheel mounting base; 6411. Extending convex plate; 642. Support wheel group; 65. Floating mechanism; 651. Floating mounting base; 652. Pressure block; 6521. First plane; 653. Elastic element; 654. Upper mounting plate; 655. Lower mounting plate; 656. Connecting guide post; 657. Graphite copper sleeve; 101. First detection sensor; 102. Second detection sensor; 103. Third detection sensor; 200. Automobile. Detailed Implementation

[0060] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0061] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] The support wheel mechanism 60 claimed in this application is applied to a car transporter 100 in an automated parking system, serving as an auxiliary support for the car transporter 100. It should be noted that the support wheel mechanism 60 is an independent module. Besides its application in the car transporter 100, the support wheel mechanism 60 can also be applied to other types of automated guided vehicles capable of traveling on a walking surface. Of course, the support wheel mechanism 60 can also be applied to electrical equipment.

[0064] like Figures 13 to 16As shown, the support wheel mechanism 60 provided in one embodiment of this application includes a swing seat 61, a load-bearing shaft 62, a swing shaft 63, and a plurality of support wheel assemblies 64. The load-bearing shaft 62 passes through the swing seat 61 and is rotatably connected to it. The swing shaft 63 passes through the swing seat 61 and is connected to it. The swing shaft 63 and the load-bearing shaft 62 are staggered in the height direction of the swing seat 61, and the axial direction of the swing shaft 63 is perpendicular to the axial direction of the load-bearing shaft 62. The plurality of support wheel assemblies 64 are arranged on both sides of the swing seat 61 along the axial direction of the swing shaft 63 and are rotatably connected to the swing shaft 63 respectively. The plurality of support wheel assemblies 64 can swing about the swing shaft 63 as the rotation center line, and the plurality of support wheel assemblies 64 can swing about the load-bearing shaft 62 as the rotation center line through the swing seat 61. Here, the number of support wheel assemblies 64 is configured as two. It can be understood that in other embodiments, the number of support wheel assemblies 64 may also be four or more even numbers, which will not be elaborated here.

[0065] As can be seen from the above, in the support wheel mechanism 60 of this application, multiple support wheel assemblies 64 swing about the mutually perpendicular load-bearing shaft 62 and swing shaft 63 as rotation center lines, so that when the support wheel mechanism 60 travels on a raised travel surface, a recessed travel surface or an uneven travel surface, the multiple support wheel assemblies 64 can always be in contact with the travel surface. This can ensure the auxiliary support function that the support wheel mechanism 60 can play and improve the stability of the car transporter 100 with the support wheel mechanism when traveling on the travel surface.

[0066] It should be noted that the aforementioned multiple support wheel assemblies 64 can each swing about the swing shaft 63 as the rotation center line. Specifically, the support wheel groups 642 located on both sides of the swing shaft 63 in each support wheel assembly 64 can rotate around the swing shaft 63 to form a vertical swing. The aforementioned multiple support wheel assemblies 64 can also swing about the load-bearing shaft 62 through the swing seat 61. Specifically, the multiple support wheel assemblies 64 located on both sides of the load-bearing shaft 62 can rotate around the load-bearing shaft 62 to form a horizontal swing.

[0067] like Figure 16 As shown, in one embodiment, the swing shaft 63 is disposed below the load-bearing shaft 62 in the vertical direction; wherein, the swing shaft 63 is capable of rotating relative to the load-bearing shaft 62 in the circumferential direction. Here, the swing shaft 63 and the swing seat 61 are limited and engaged in the circumferential direction of the load-bearing shaft 62, so that the swing shaft 63 can drive the swing seat 61 to rotate on the load-bearing shaft 62 under the drive of the multiple support wheel assemblies 64.

[0068] Furthermore, the outer wall of the swing shaft 63 is provided with a recessed mating surface, and at least a portion of the outer peripheral wall of the load-bearing shaft 62 is located in the recessed mating surface, forming a limiting fit along the axial direction of the swing shaft 63, so that the swing shaft 63 can rotate around the load-bearing shaft 62, while preventing the swing shaft 63 and the load-bearing shaft 62 from slipping in the axial direction of the swing shaft 63.

[0069] like Figures 13 to 15 As shown, in one embodiment, the support wheel assembly 64 includes a support wheel mounting base 641 and a plurality of support wheel sets 642. The plurality of support wheel sets 642 are arranged on both sides of the swing shaft 63 along the axial direction of the load-bearing shaft 62 and are respectively connected to the support wheel mounting base 641. The support wheel mounting base 641 is provided with an extension protrusion 6411, which is rotatably connected to the swing shaft 63. Here, the support wheel assembly 64 achieves rotation around the swing shaft 63, i.e., vertical swinging, through the support wheel mounting base 641 and the extension protrusion 6411. In one embodiment, the support wheel assembly 64 has two support wheel sets 642, each of which can be configured as a swivel wheel structure. It is understood that in other embodiments, the number of support wheel sets 642 can also be three, four, or even more, and the plurality of support wheel sets 642 can be specifically arranged at both ends of the swing shaft 63.

[0070] like Figures 13 to 15 , Figures 17 to 20 As shown, in one embodiment, the support wheel mechanism 60 further includes multiple floating mechanisms 65. These floating mechanisms 65 are arranged along the axial direction of the load-bearing shaft 62 on both sides of the load-bearing shaft 62 and are respectively connected to the load-bearing shaft 62 in a circumferentially limiting manner. That is, the support wheel assembly 64 in the support wheel mechanism 60 supports the multiple floating mechanisms 65 through the support wheel mounting base 641 and the load-bearing shaft 62. Here, the number of floating mechanisms 65 is configured as two, arranged at the two ends of the load-bearing shaft 62 in the axial direction. It can be understood that in other embodiments, the number of floating mechanisms 65 may be three, four, or even more, and the multiple floating mechanisms 65 may specifically be arranged at both ends of the load-bearing shaft 62 in the axial direction.

[0071] like Figure 15 , Figures 17 to 20As shown, in one embodiment, the floating mechanism 65 includes a floating mounting base 651, on which a load-bearing shaft 62 is mounted and circumferentially limited relative to the floating mounting base 651. The floating mounting base 651 can be adjusted in position along the height of the swing seat 61 under the influence of the load-bearing shaft 62. This ensures that when the support wheel mechanism 60 travels on a raised, recessed, or uneven surface, the lifting adjustment of the floating mounting base 651 guarantees that the support wheel assembly 64 in the support wheel mechanism 60 remains in contact with the surface, providing auxiliary support to the frame 10.

[0072] like Figure 17 , Figure 20 , Figure 22 As shown, in one embodiment, the floating mechanism 65 further includes a pressure block 652, which is threadedly connected to the floating mounting base 651 to press and limit the portion of the load-bearing shaft 62 located on the floating mounting base 651. The pressure block 652 has a first plane 6521, and the load-bearing shaft 62 has a second plane 621. The first plane 6521 and the second plane 621 are in contact, thereby achieving circumferential limiting of the load-bearing shaft 62 during assembly on the floating mounting base 651. It is understood that in other embodiments, the planar contact between the floating mounting base 651 and the load-bearing shaft 62 during assembly can also be used to achieve circumferential limiting of the assembly, or a bolt or other connecting component (not shown) can be directly threaded through the load-bearing shaft 62 and connected to the floating mounting base 651 to achieve circumferential limiting of the assembly. These details will not be elaborated upon here.

[0073] like Figures 17 to 23 As shown, in one embodiment, the floating mechanism 65 further includes an elastic element 653. The elastic element 653 abuts against the floating mounting base 651 in a pre-compressed manner, providing a vertical elastic force to the floating mounting base 651. This satisfies the need for the floating mounting base 651 to be raised and lowered vertically under the drive of the load-bearing shaft 62. Specifically, when the support wheel assembly 642 is raised due to the protrusion of the traveling surface, the support wheel assembly 642, under the transmission of the support wheel mounting base 641 and the load-bearing shaft 62, can drive the floating mounting base 651 to compress the elastic element 653 and rise; conversely, when the support wheel assembly 642 is lowered due to the concavity of the traveling surface, the floating mounting base 651 will also descend. Here, the elastic element 653 is configured as a spring. It is understood that in other embodiments, the elastic element 653 may also be configured as a rubber sleeve or other highly elastic accessories, which will not be elaborated here.

[0074] like Figure 14 , Figures 17 to 23As shown, in one embodiment, the floating mechanism 65 further includes an upper mounting plate 654 and a lower mounting plate 655, with a floating mounting seat 651 disposed between the upper mounting plate 654 and the lower mounting plate 655; one end of the elastic member 653 away from the floating mounting seat 651 abuts against the upper mounting plate 654, forming a first elastic gap D between the floating mounting seat 651 and the upper mounting plate 654; and / or, one end of the elastic member 653 away from the upper mounting plate 654 is connected to the floating mounting seat 651, forming a second elastic gap d between the floating mounting seat 651 and the lower mounting plate 655. Here, the end of the elastic member 653 away from the floating mounting seat 651 abuts against the upper mounting plate 654. That is, when the floating mounting seat 651 can adjust its position between the upper mounting plate 654 and the lower mounting plate 655 by the lifting and lowering of the elastic member 653, the aforementioned first elastic gap D and second elastic gap d will change with the stretching or compression of the elastic member 653.

[0075] When the support wheel assembly 64 travels on a normal flat ground, due to the weight of the car carrier 100 or the support wheel assembly 64, the elastic element 653 generates a certain amount of compression, the first elastic gap D between the upper mounting plate 654 and the floating mounting seat 651 decreases, and the second elastic gap d between the lower mounting plate 655 and the floating mounting seat 651 increases.

[0076] When the support wheel assembly 64 encounters a raised surface, the support wheel mounting base 641 rises in relative height. The load-bearing shaft 62, carrying the floating mounting base 651, further compresses the elastic element 653, further reducing the first elastic gap D between the upper mounting plate 654 and the floating mounting base 651. During this process, the position of the vehicle frame 10 of the car transporter 100 relative to the ground remains almost unchanged; that is, the compression of the elastic element 653 effectively reduces the vibration amplitude of the car transporter 100.

[0077] When the support wheel assembly 64 encounters a depression in the ground, the relative height of the support wheel mounting base 641 decreases, the elastic element 653 extends, and the first elastic gap D between the upper mounting plate 654 and the floating mounting base 651 widens. During this process, the position of the car transporter 100 relative to the ground hardly changes. That is, through the extension of the elastic element 653, the vibration amplitude of the car transporter 100 is effectively reduced, and the support wheel assembly 64 is always in contact with the ground, providing support for the AGV trolley.

[0078] When the support wheel assembly 642 travels on uneven ground along the vertical direction (axial direction of the load-bearing shaft), the support wheel mounting base 641 can swing vertically by cooperating with the rotation of the swing shaft 63, ensuring that the support wheel assembly 642 is always in contact with the ground and providing support for the AGV trolley.

[0079] When the support wheel assembly 642 travels on uneven ground along the horizontal direction (axis of the swing shaft), the support wheel mounting base 641 and the swing base 61 can swing horizontally by relying on the rotational cooperation with the load-bearing shaft 62, ensuring that the support wheel assembly 642 is always in contact with the ground and providing support for the AGV trolley.

[0080] like Figure 14 , Figures 17 to 23 As shown, in one embodiment, the floating mechanism 65 further includes a connecting guide post 656, which is disposed between the upper mounting plate 654 and the lower mounting plate 655, and is connected to both the upper mounting plate 654 and the lower mounting plate 655 respectively. Specifically, the three can be connected and fixed with bolts. An elastic element 653 is fitted onto the connecting guide post 656, and the floating mounting seat 651 is slidably connected to the connecting guide post 656. That is, the upper mounting plate 654, the connecting guide post 656, and the lower mounting plate 655 are connected to form the overall frame structure of the floating mechanism 65. Here, the upper mounting plate 654 extends outward relative to the lower mounting plate 655 in a direction away from the swing seat 61, and the extended part of the upper mounting plate 654 is connected to the frame 10 by threads, thereby realizing the assembly connection of the support wheel mechanism 60 on the frame 10. In other words, the floating mounting base 651 can adjust the lifting and lowering of the elastic element 653 between the upper mounting plate 654 and the lower mounting plate 655. During this process, the connecting guide post 656 guides the lifting and lowering movement of the floating mounting base 651. Here, multiple connecting guide posts 656 are configured, and these multiple connecting guide posts 656 are arranged sequentially at intervals along the axial direction of the swing shaft 63. At least some of the multiple connecting guide posts 656 are fitted with graphite copper sleeves 657, and these connecting guide posts 656 can be slidably connected to the floating mounting base 651 through the graphite copper sleeves 657. The remaining connecting guide posts 656 are fitted with elastic elements 653. In one embodiment, the connecting guide posts 656 fitted with graphite copper sleeves 657 and the connecting guide posts 656 fitted with elastic elements 653 are arranged at intervals.

[0081] like Figure 3 , Figure 4As shown, the car transporter 100 provided in this application includes a frame 10, two drive wheel mechanisms 20, two clamping arm mechanisms 30, a wheelbase adjustment mechanism 40, a control module 50, and the aforementioned support wheel mechanism 60. The two drive wheel mechanisms 20 are disposed in the area of ​​the frame 10 and connected to the frame 10; the two clamping arm mechanisms 30 are mounted on the frame 10 and are used to clamp the front and rear wheels of the car 200. At least one clamping arm mechanism 30 can move relative to the frame 10 along the length direction of the frame 10 to adapt to different wheelbases of the car 200; wherein, each Each clamping arm mechanism 30 includes four robotic arms 31, with two robotic arms 31 forming a group. Both groups of robotic arms 31 can rotate out from the frame 10 to clamp the tires of the car 200 (not shown). A wheelbase adjustment mechanism 40 corresponds to at least one of the two clamping arm mechanisms 30, and is mounted on the corresponding clamping arm mechanism 30 to control the movement of the clamping arm mechanism 30 on the frame 10. A control module 50 is installed inside the frame 10 and is electrically connected to the drive wheel mechanism 20, the two clamping arm mechanisms 30, and the wheelbase adjustment mechanism 40. Here, a support wheel mechanism 60 is located between the two drive wheel mechanisms 20 and connected to the frame 10. This allows the car transporter 100 to use the support wheel mechanism 60 to provide auxiliary support to the frame 10, preventing deformation of the frame 10 due to pressure when transporting the car 200, thus improving the load-bearing stability of the car transporter 100.

[0082] It should be noted that the two clamping arm mechanisms 30 in the above-mentioned car transporter 100 are configured with the same structure, and one of the clamping arm mechanisms 30 is capable of moving on the vehicle frame 10. It is understood that in other embodiments, both clamping arm mechanisms 30 may also be configured to be movable on the vehicle frame 10, which will not be elaborated here.

[0083] As can be seen from the above, when the car transporter 100 is not gripping the tires of the car 200 with the robotic arm 31, the entire clamping arm mechanism 30 can be housed within the area of ​​the frame 10 when it is folded up. Specifically, it is placed against the long side of the frame 10, without occupying space in the length and width directions of the frame 10. This allows the car transporter 100 to be small in size and better adaptable to special scenarios. Furthermore, the car transporter 100 can automatically adjust the distance between the two clamping arm mechanisms 30 using the wheelbase adjustment mechanism 40. This makes the car transporter 100 suitable not only for transporting cars 200 with different wheelbases, but also for automatically adjusting the distance between the two clamping arm mechanisms 30 according to the signal received by the control module 50 during the process of the car transporter 100 driving under the car 200 to adapt to the car's wheelbase. This simplifies the car transporter 100's car retrieval action, shortens the car retrieval time, and improves work efficiency.

[0084] like Figure 3 , Figure 4 and Figure 10 As shown, in one embodiment, a body slide rail 11 is provided on the frame 10; wherein, a roller 301 is rotatably connected to the movable clamping arm mechanism 30, specifically the roller 301 can be rotatably mounted on the clamping arm frame 310 of the clamping arm mechanism 30; wherein, the roller 301 is provided on the body slide rail 11, and the clamping arm mechanism 30 can move on the body slide rail 11 via the roller 301. That is to say, the clamping arm mechanism 30 can achieve movement by the movement of the roller 301 on the body slide rail 11, which can reduce the frictional resistance encountered by the clamping arm mechanism 30 when moving on the frame 10. Here, the number of body slide rails 11 is configured as two, and the two body slide rails 11 are arranged at intervals along the width direction of the frame 10, and the number of rollers 301 is configured as four, with two rollers 301 as a group, which are rotatably disposed on one of the body slide rails 11.

[0085] like Figure 3 , Figure 4 As shown, in one embodiment, the number of drive wheel mechanisms 20 is configured to be multiple. These multiple drive wheel mechanisms 20 are disposed on both sides of the frame 10 along its length, jointly supporting the frame 10 and enabling the car transporter 100 to move on the automated parking garage. Here, the number of drive wheel mechanisms 20 is configured to be two, with the two drive wheel mechanisms 20 having the same structure. It is understood that in other embodiments, the number of drive wheel mechanisms 20 may also be four, with two groups of two drive wheel mechanisms 20 arranged on both sides of the frame 10 along its length; this will not be elaborated upon here.

[0086] like Figures 5 to 7As shown, in one embodiment, the drive wheel mechanism 20 includes two drive wheel sets 21, a connecting frame 22, a connecting shaft 23, and a slewing support assembly 24. The connecting frame 22 is disposed between the two drive wheel sets 21 and connected to each drive wheel set 21. The connecting frame 22 is rotatably mounted on the slewing support assembly 24 via the connecting shaft 23. Specifically, the connecting shaft 23 is fixedly mounted on the slewing support assembly 24 after passing through the connecting frame 22, so that the two drive wheel sets 21 can swing about the connecting shaft 23 as the rotation center line. That is, when the two drive wheel sets 21 are moving, they swing left and right according to the raised, recessed, or uneven running surfaces. This reduces the vibration amplitude of the car transporter 100 caused by the raised, recessed, or uneven running surfaces when it is moving, so that the car transporter 100 has good adaptability to environments with poor running surface flatness, ensuring that the two drive wheel mechanisms 20 support the frame 10 and avoid extreme load conditions. Here, the two drive wheel sets 21 are electrically connected to the control module 50, so that the control module 50 can independently control the operation of each drive wheel set 21.

[0087] like Figure 5 , Figure 7 As shown, in one embodiment, the drive wheel assembly 21 includes a drive wheel 211, a drive motor 212, and a drive reducer 213. The drive wheel 211 and the drive motor 212 are mounted on the drive reducer 213 and are respectively connected to the drive reducer 213 for transmission. When the drive wheel assembly 21 is working, the drive motor 212, under the reduction adjustment of the drive reducer 213, can drive the drive wheel 211 to rotate, thus enabling the drive wheel 211 to move. Here, the drive wheel 211 and the drive motor 212 are arranged at right angles, and the drive wheel assembly 21 is specifically connected and fixed to the connecting frame 22 through the drive reducer 213, allowing the two drive wheels 211 on the two drive wheel assemblies 21 to be symmetrically arranged. It should be noted that the drive motor 212 in the drive wheel assembly 21 is electrically connected to the control module 50.

[0088] It should be noted that, since the two sets of drive wheel groups 21, the two drive wheels 211, the two drive motors 212, and the two drive reducers 213 in the drive wheel mechanism 20 are arranged symmetrically with respect to the center line of the connecting shaft 23, and the drive reducers 213 in the two sets of drive wheel groups 21 are connected to each other by the connecting frame 22 to form an integral structure, this can play a stabilizing role. In conjunction with the slewing support assembly 24, it is more conducive to the steering motion of the drive wheel mechanism 20.

[0089] It is understandable that when the control module 50 controls the rotational speeds of the two drive wheels 211 in the drive wheel assembly 21 to be inconsistent, the steering function of the drive wheel assembly 21 can be achieved by utilizing the speed difference between the two drive wheels 211; therefore, such as Figure 5As shown, the drive wheel mechanism 20 also includes an encoder 240 for detecting the rotation angle when the drive wheel mechanism 20 turns. Specifically, the slewing support assembly 24 includes a slewing support mounting base 241 and a slewing support 242 fixed to each other. An encoder gear 243 is connected to the encoder 240, and the encoder gear 243 meshes with the ring gear 2421 on the slewing support 242. Thus, when the two drive wheel sets 21 turn using the speed difference between the two drive wheels 211, the two drive wheel sets 21 can drive the slewing support 242 to rotate through the connecting frame 22 and the connecting shaft 23. Then, the meshing between the encoder gear 243 and the ring gear 2421 drives the encoder gear 243 to rotate, thereby triggering the encoder 240 and generating a feedback signal. This feedback signal is sent to the control module 50, so that the control module 50 can control the speed of the two drive wheels 211 according to the feedback signal transmitted by the encoder 240, and realize the steering control of the drive wheel mechanism 20. Here, the slewing support assembly 24 is connected and fixed to the connecting shaft 23 via the slewing support mounting base 241.

[0090] like Figures 5 to 7 As shown, in one embodiment, the drive wheel mechanism 20 further includes a drive mounting plate 25 and a drive floating assembly 26; the drive mounting plate 25 is mounted on the frame 10; the slewing support assembly 24 is mounted on the drive mounting plate 25 via the drive floating assembly 26, so that the slewing support assembly 24 can be adjusted in position in the height direction of the frame 10. That is, the drive wheel mechanism 20 as a whole can be assembled with the drive mounting plate 25 as the assembly base, and the drive wheel mechanism 20 can be adjusted in height using the drive floating assembly 26 when walking, thus ensuring that the two drive wheels 211 on the drive wheel assembly 21 are always in contact with the walking surface and preventing the drive wheels 211 from spinning freely. Here, one end of the drive mounting plate 25 is rotatably connected to the frame 10 via a hinge 251. The other end of the drive mounting plate 25 rests against the frame 10, and the other two ends of the drive mounting plate 25 are placed on the frame 10 and then locked with bolts or other fasteners (not shown). This achieves the assembly connection between the drive mounting plate 25 and the frame 10. When the drive wheel mechanism 20 needs maintenance, the fasteners on the drive mounting plate 25 can be released from the frame 10, and then the drive wheel mechanism 20 can be flipped upwards via the hinge 251, thus avoiding the need to lift the entire car transporter 100. It should be noted that the drive wheel mechanism 20 has four drive floating components 26, which are arranged at the four corners of the drive mounting plate 25. The four drive floating components 26 are used together to achieve the lifting and lowering adjustment of the drive wheel assembly 21.

[0091] like Figure 7As shown, in one embodiment, the driving floating assembly 26 includes a guide shaft 261, an elastic element 262, and a floating pressure plate 263. The guide shaft 261 is fixedly mounted on the rotary support assembly 24 and slidably connected to the driving mounting plate 25. Specifically, a guide shaft mounting plate (not shown) is fixedly connected to the guide shaft 261. The guide shaft mounting plate is attached to the rotary support mounting seat 241 of the rotary support assembly 24, and then pressed and limited by a limiting plate 2611 fixed on the rotary support mounting seat 241; the floating pressure plate 26... 3. The guide shaft 261 is positioned above the drive mounting plate 25 in the height direction of the frame 10 and is connected and fixed to the drive mounting plate 25 via multiple connecting posts 264. An elastic element 262 is partially disposed within the guide shaft 261 and abuts against the lower cover 2612 and floating pressure plate 263 of the guide shaft 261 in a pre-compressed manner. This allows the slewing support assembly 24 to drive the guide shaft 261 to make vertical floating adjustments relative to the drive mounting plate 25 in the height direction of the frame 10 using the deformation of the elastic element 262. Here, the elastic element 262 can be configured as a spring, rubber sleeve, or other highly elastic component, which will not be elaborated further. It should be noted that a guide shaft bearing 252 is fixedly mounted on the drive mounting plate 25. The guide shaft 261 passes through the guide shaft bearing 252 and slides within it, guiding the guide shaft 261 to slide vertically relative to the guide shaft bearing 252.

[0092] like Figure 8 As shown, in one embodiment, the gripper arm mechanism 30 includes four robotic arms 31, a second rotary drive component 32, and four rack assemblies. Each of the four robotic arms 31 is equipped with an arc-shaped gear 311, and the four rack assemblies correspond one-to-one with the four arc-shaped gears 311. The arc-shaped gears 311 are connected to the second rotary drive component 32 via their respective rack assemblies. In other words, the rotation of the robotic arms 31 on the frame 10 can be achieved through gear and rack meshing. Here, the second rotary drive component 32 is configured as a motor, which can be mounted on the gripper arm frame 310 of the robotic arms 31 via a motor mounting plate 321. Furthermore, the control module 50 is electrically connected to the motor and is used to control the motor's start / stop. It is understood that in other embodiments, the second rotary drive component 32 may also be a rotary cylinder, rotary hydraulic cylinder, etc., which will not be elaborated upon here.

[0093] like Figure 8 , Figure 9As shown, in one embodiment, the rack assembly includes a rack 34 and a ball screw 331. The rack 34 is threaded to the ball screw 331 and meshes with a corresponding arc gear 311. This threaded connection between the ball screw 331 and the rack 34 allows the ball screw 331 to rotate, driving the rack 34 to move axially upwards along its axis. The meshing between the rack 34 and the corresponding arc gear 311 causes the arc gear 311 mounted on the robotic arm 31 to rotate, thereby rotating the robotic arm 31. The four ball screws 331 are connected to the second rotary drive component 32 via a synchronous transmission assembly 33. This allows the clamping arm mechanism 30 to rotate the four robotic arms 31 using only a second rotary drive 32, and to drive two sets of robotic arms 31 to grip the tires of the car 200. This simplifies the structure of the clamping arm mechanism 30, reduces costs, and ensures the consistency of the movement of the four racks 34 to meet the requirements of driving the two sets of robotic arms 31. Here, the synchronous transmission assembly 33 includes a first coupling 332, a second reducer 333, a synchronous shaft 334, and a second coupling 335. The two ball screws 331 corresponding to each set of robotic arms 31 can be connected by the first coupling 332; while the two sets of robotic arms 31 can be connected by the second reducer 333, the synchronous shaft 334, and the second coupling 335.

[0094] In this embodiment, the control module 50 is electrically connected to the second rotary drive 32. The control module 50 acquires the vehicle wheelbase information and outputs the vehicle wheelbase information to the second rotary drive 32 to control the operation of the second rotary drive 32, so as to drive the four robotic arms 31 to rotate out of the frame 10. This allows the car transporter 100 to automatically drive the two clamping arm mechanisms 30 to clamp the front and rear wheels of the car 200 after entering under the car chassis, which can improve the working efficiency of the car transporter 100.

[0095] It should be noted that the clamping arm mechanism 30 also includes a detection sensor for position detection of the robotic arm 31. The detection sensor is electrically connected to the control module 50 and is used to detect two positions of the robotic arm 31: the folded state when it is folded into the frame 10 and the working state when it is clamping the tire of the car 200. The detection sensor provides signal feedback on the working state of the clamping arm mechanism 30 accordingly. Here, a mounting plate 3021 is installed on one of the second reducers 333, and a photoelectric switch 302 is installed on the mounting plate 3021. The photoelectric switch 302 is used to detect whether the robotic arm 31 is in the working state. A trigger switch (not shown) is installed on the clamping arm frame 310 of the robotic arm 31. Correspondingly, a detection plate (not shown) is installed on one of the racks 34. The detection plate is used to detect whether the robotic arm 31 is in the folded state by matching the position of the rack 34 when the trigger switch is triggered with the position of the robotic arm 31 when it is in the folded state. It is understood that in other embodiments, the detection sensor described above can also provide feedback by detecting the two extreme positions of the rack 34, which will not be elaborated here.

[0096] like Figure 3 , Figure 4 , Figure 11 and Figure 12 As shown, in one embodiment, a chain 12 is mounted on the frame 10. The chain 12 extends along the length of the frame 10 and passes through the corresponding clamping arm mechanism 30. Specifically, both ends of the chain 12 can be fixed to the frame 10 via chain rods 121. Correspondingly, the wheelbase adjustment mechanism 40 includes a drive sprocket 41 and a first rotary drive member 42. The drive sprocket 41 is engaged with the chain 12 and is connected to the first rotary drive member 42 for transmission. This allows the wheelbase adjustment mechanism 40 to utilize the action and reaction forces between the drive sprocket 41 and the chain 12 to realize the movement of the clamping arm mechanism 30 on the frame 10, thus meeting the usage requirements of the car transporter 100 for adjusting the distance between the two clamping arm mechanisms 30. Here, the first rotary drive component 42 is configured as a motor, which is connected to the drive sprocket 41 via a third reducer 421. The third reducer 421 can be fixed to the clamping arm frame 310 via a mounting base 422. Furthermore, the control module 50 is electrically connected to the motor and is used to control the motor's start / stop. It is understood that in other embodiments, the first rotary drive component 42 may also be a rotary cylinder, a rotary hydraulic cylinder, etc., which will not be elaborated here.

[0097] like Figure 11 , Figure 12As shown, in one embodiment, the number of chains 12 is configured as two, and the two chains 12 are arranged at intervals along the width direction of the frame 10. Correspondingly, the number of drive sprockets 41 in the wheelbase adjustment mechanism 40 is configured as two, and the two drive sprockets 41 are connected by a connecting drive shaft 411. Each drive sprocket 41 meshes with one of the chains 12. Here, the first rotary drive member 42 is connected to one of the drive sprockets 41 by a third reducer 421. The third reducer 421 is then connected to one end of the drive shaft 411 by a rigid coupling 4111, and the other end of the drive shaft 411 is connected to the other drive sprocket 41 by a universal coupling 4112. This allows the wheelbase adjustment mechanism 40 to drive the two drive sprockets 41 to rotate on their respective chains 12 using only one first rotary drive member 42. It is understood that in other embodiments, the number of chains 12 may be one, three, four, or even more, which will not be elaborated here.

[0098] like Figure 12 As shown, in one embodiment, the wheelbase adjustment mechanism 40 further includes an idler sprocket 43. The idler sprocket 43 is disposed on one side of the drive sprocket 41 and meshes with the chain 12 to tension the chain 12. This ensures the stability of the meshing between the drive sprocket 41 and the chain 12, meeting the usage requirements of the clamping arm mechanism 30 moving on the frame 10. Here, each drive sprocket 41 corresponds to two idler sprockets 43, which are disposed on both sides of the corresponding drive sprocket 41 and rotatably connected to the mounting base 422.

[0099] As can be seen from the above, when the car transporter 100 of this application is working, the control module 50 can control the opening / closing of the first rotary drive 42 in the wheelbase adjustment mechanism 40 according to the signal transmitted by the three-dimensional garage, so as to adjust the distance between the two clamping arm mechanisms 30. In order to ensure that the clamping arm mechanism 30 can be accurately aligned with the tire of the car 200, in addition to controlling the distance between the two clamping arm mechanisms 30 according to the signal received by the control module 50, the car transporter 100 of this application can also detect the movement of the moving clamping arm mechanism 30 and generate a feedback signal by setting a position sensor (not shown). The feedback signal is used to transmit to the control module 50 and achieve a double insurance effect.

[0100] like Figure 4 , Figure 8 and Figure 9As shown, in one embodiment, a first detection sensor 101 is mounted on the frame 10. When the distance between the two clamping arm mechanisms 30 is at its maximum, the first detection sensor 101 can be triggered by the moving clamping arm mechanism 30 and generate a feedback signal. That is, the car transporter 100 can achieve automatic control when the distance between the two clamping arm mechanisms 30 is at its maximum. Here, the first detection sensor 101 is configured as a photoelectric switch, micro switch, proximity switch, etc., fixed on the frame 10; correspondingly, a first trigger plate 3101 is mounted on the clamping arm frame 310 of the clamping arm mechanism 30, and the clamping arm mechanism 30 can trigger the first detection sensor 101 with the first trigger plate 3101.

[0101] like Figure 3 , Figure 9 As shown, in one embodiment, a second detection sensor 102 is mounted on the frame 10. When the distance between the two clamping arm mechanisms 30 is at its minimum, the second detection sensor 102 can be triggered by the moving clamping arm mechanism 30 and generate a feedback signal. That is, the car transporter 100 can achieve automatic control when the distance between the two clamping arm mechanisms 30 is minimized. Here, the second detection sensor 102 is configured as a photoelectric switch, micro switch, proximity switch, etc., fixed on the frame 10; correspondingly, a second trigger plate 3102 is mounted on the clamping arm frame 310 of the clamping arm mechanism 30, and the clamping arm mechanism 30 can trigger the second detection sensor 102 with the second trigger plate 3102.

[0102] like Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, in one embodiment, a third detection sensor 103 is also installed on the clamping arm frame 310 of the moving clamping arm mechanism 30. The third detection sensor 103 can detect the position of the tire of the car 200 and generate a feedback signal. That is, the car transporter 100 can ensure that the clamping arm mechanism 30 automatically stops when it moves to a position that can clamp the tire of the car 200 by detecting when the clamping arm mechanism 30 is aligned with the tire of the car, so as to meet the usage requirements of the clamping arm mechanism 30 clamping the tire of the car. Here, the third detection sensor 103 is configured as a photoelectric switch, proximity switch, etc.

[0103] like Figure 1 , Figure 2As shown, when the car transporter 100 of this application retrieves a car, the control module 50 on the car transporter 100 controls the two drive wheel mechanisms 20 to start according to the received external signal, so that the car transporter 100 can move on the walking surface and enter the bottom of the car 200 through the two drive wheel mechanisms 20 and the support wheel mechanism 60. During this process, the wheelbase adjustment mechanism 40 can automatically adjust the distance between the two clamping arm mechanisms 30 according to the wheelbase of the car 200 to be transported. After the car transporter 100 is in place, the robotic arm 31 on the two clamping arm mechanisms 30 rotates out from the frame 10 and clamps the car tires to drive the car to lift off the walking surface. Then, the car transporter 100 can drive the car to move and complete the car retrieval action.

[0104] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A support wheel mechanism, characterized in that, The support wheel mechanism (60) includes: Swing seat (61); A load-bearing shaft (62) is provided through the swing seat (61) and rotatably connected to the swing seat (61); A swing shaft (63) is provided through the swing seat (61) and connected to the swing seat (61). The swing shaft (63) and the load-bearing shaft (62) are offset in the height direction of the swing seat (61), and the axial direction of the swing shaft (63) is perpendicular to the axial direction of the load-bearing shaft (62). Multiple support wheel assemblies (64) are arranged on both sides of the swing seat (61) along the axial direction of the swing shaft (63) and are respectively connected to the swing shaft (63); The plurality of support wheel assemblies (64) are capable of swinging about the swing axis (63) as the rotation center line, and the plurality of support wheel assemblies (64) are capable of swinging about the load-bearing axis (62) through the swing seat (61).

2. The support wheel mechanism according to claim 1, characterized in that, The support wheel assembly (64) includes a support wheel mounting base (641) and a plurality of support wheel sets (642). The plurality of support wheel sets (642) are arranged on both sides of the swing shaft (63) along the axial direction of the load-bearing shaft (62) and are respectively connected to the support wheel mounting base (641). The support wheel mounting base (641) is provided with an extension protrusion (6411), which is rotatably connected to the swing shaft (63).

3. The support wheel mechanism according to claim 1, characterized in that, The support wheel mechanism (60) also includes a plurality of floating mechanisms (65), which are arranged on both sides of the load-bearing shaft (62) along the axial direction of the load-bearing shaft (62) and are respectively connected to the load-bearing shaft (62) in a circumferential limiting manner.

4. The support wheel mechanism according to claim 3, characterized in that, The floating mechanism (65) includes a floating mounting base (651), and the load-bearing shaft (62) is mounted on the floating mounting base (651) and is circumferentially limited relative to the floating mounting base (651); The floating mounting base (651) can be adjusted in position in the height direction of the swing base (61) under the drive of the load-bearing shaft (62).

5. The support wheel mechanism according to claim 4, characterized in that, The floating mechanism (65) further includes an elastic element (653), which is connected to the floating mounting base (651) in a pre-compressed manner to provide the floating mounting base (651) with a vertical elastic force.

6. The support wheel mechanism according to claim 5, characterized in that, The floating mechanism (65) further includes an upper mounting plate (654) and a lower mounting plate (655); The floating mounting base (651) is disposed between the upper mounting plate (654) and the lower mounting plate (655); one end of the elastic member (653) away from the floating mounting base (651) abuts against the upper mounting plate (654) so ​​that a first elastic gap (D) is formed between the floating mounting base (651) and the upper mounting plate (654). And / or, one end of the elastic member (653) away from the upper mounting plate (654) is connected to the floating mounting base (651) so that a second elastic gap (d) is formed between the floating mounting base (651) and the lower mounting plate (655).

7. The support wheel mechanism according to claim 6, characterized in that, The floating mechanism (65) further includes a connecting guide post (656), which is disposed between the upper mounting plate (654) and the lower mounting plate (655) and is connected to the upper mounting plate (654) and the lower mounting plate (655) respectively; the elastic element (653) is fitted on the connecting guide post (656), and the floating mounting seat (651) is slidably connected to the connecting guide post (656).

8. The support wheel mechanism according to claim 7, characterized in that, The number of connecting guide posts (656) is configured to be multiple, and at least some of the connecting guide posts (656) are respectively fitted with graphite copper sleeves (657), and the connecting guide posts (656) can be slidably connected to the floating mounting base (651) through the graphite copper sleeves (657).

9. The support wheel mechanism according to claim 4, characterized in that, The floating mechanism (65) further includes a pressure block (652), which is connected to the floating mounting base (651) by a thread and is used to press and limit the portion of the load-bearing shaft (62) located on the floating mounting base (651). The pressure block (652) has a first plane (6521) formed on it, the load-bearing shaft (62) has a second plane (621) formed on it, and the first plane (6521) and the second plane (621) are in contact.

10. A car transporter, characterized in that, It includes a frame (10), two sets of drive wheel mechanisms (20), and a support wheel mechanism (60) as described in any one of claims 1 to 9; Both drive wheel mechanisms (20) and support wheel mechanisms (60) are mounted on the frame (10) to support the frame (10).

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