Wheel swing device and transport vehicle

Abstract

The present application provides a wheel swing device, which is arranged on a transport vehicle, and the wheel swing device includes a wheel assembly, a fixing frame, a cantilever and a first driving member, one end of the fixing frame is connected to the wheel assembly, the cantilever is hinged to the fixing frame, and is used to be installed on the transport vehicle, the first driving member is connected to the other end of the fixing frame away from the wheel assembly, the first driving member can drive the fixing frame to swing, and the fixing frame after swinging is used to provide support force to the wheel assembly. The present application also relates to a transport vehicle, which can realize the swing of the wheel assembly and improve the stability of the wheel swing device by adopting the above-mentioned wheel swing device, and is also suitable for some special road conditions.

Description

Technical Field

[0001] The present application relates to a swing device, and in particular to a wheel swing device and a transport vehicle. Background Art

[0002] During the operation of existing vehicles, especially large transport vehicles, such transport vehicles sometimes encounter some special road conditions, such as driving on mountain roads or encountering some situations with steps on the road surface. Due to their large size, the transport vehicles have difficulty moving forward when encountering such situations. Summary of the invention

[0003] In view of this, it is necessary to provide a wheel swinging device and a transport vehicle, so as to enable smoother travel when encountering some special road conditions.

[0004] An embodiment of the present application provides a wheel swing device, which is arranged on a transport vehicle, and the wheel swing device includes a wheel assembly, a fixed frame, a cantilever and a first driving member. One end of the fixed frame is connected to the wheel assembly, and the cantilever is hinged to the fixed frame for installation on the transport vehicle. The first driving member is connected to the other end of the fixed frame away from the wheel assembly. The first driving member can drive the fixed frame to swing, and the fixed frame after swinging is used to provide supporting force to the wheel assembly.

[0005] Taking the case where the wheel swing device is installed on a transport vehicle as an example, after the first driving member drives the fixing frame to swing, the fixing frame can provide support force to the wheel assembly, so that when encountering special road conditions, such as mountain roads or steps, it is easier to cross the steps or move toward the mountain road. At the same time, the center of gravity of the cantilever is lowered, which improves the stability of the wheel swing device and prevents the transport vehicle using the wheel swing device from tipping over.

[0006] In one possible implementation, the fixing frame includes a first body and a first connecting portion, the first connecting portion extends from the first body and is connected to the wheel assembly, the first body is hinged to the cantilever, and is connected to the first driving member.

[0007] The first connecting portion is connected to the wheel assembly so that there is a certain space between the wheel assembly and the first body, thereby avoiding interference between the first body and the wheel assembly.

[0008] In a possible implementation, a second driving member is further included, the first connecting portion includes a connecting arm, the connecting arm is connected to the second driving member, and the second driving member drives the connecting arm to enable the fixing frame to move.

[0009] Taking the wheel swing device installed on the transport vehicle as an example, when the transport vehicle makes a large turn, the second driving member drives the connecting arm to move along the axial direction of the wheel assembly, thereby increasing the distance between the two relative wheel swing devices, improving the stability of the transport vehicle and avoiding the transport vehicle from tipping over due to unstable center of gravity.

[0010] In a possible implementation, a first through hole is provided on the first body, and the second driving member passes through the first through hole to connect to the connecting arm.

[0011] The second driving member passes through the first through hole and is connected to the connecting arm, which simplifies the structure of the wheel swinging device and eliminates the need for the second driving member to bypass the first body and be connected to the connecting arm.

[0012] In a possible implementation, the cantilever is provided with a second through hole, and the cantilever is sleeved on the transport vehicle through the second through hole, so as to install the wheel swing device on the transport vehicle.

[0013] The second through hole on the cantilever is sleeved on the transport vehicle, so that the installation between the wheel swing device and the transport vehicle is easier and the assembly efficiency of the wheel swing device is improved.

[0014] In one possible implementation, the wheel assembly further includes a second connecting portion, which is disposed on the wheel body and extends from the wheel body to be connected to the first connecting portion.

[0015] The second connection part is connected to the first connection part, so that there is a certain space between the wheel body and the first connection part, thereby avoiding the possibility of interference between the first connection part and the wheel body.

[0016] In a possible implementation, the two wheel assemblies and the two fixing frames are included, each of the fixing frames is connected to one wheel assembly, and the first driving member is connected to the two fixing frames respectively.

[0017] The first driving frame is connected to the two fixing frames respectively. When the wheel swinging assembly is assembled on the transport vehicle, the stability of the transport vehicle is increased. At the same time, one first driving member drives the two fixing frames at the same time, which simplifies the structure of the wheel swinging device and reduces the cost.

[0018] In a possible implementation, a universal ball bearing is provided between the first driving member and the fixing frame, and the universal ball bearing is used to enable the fixing frame to swing after the first driving member drives the fixing frame.

[0019] By adopting the universal ball bearing, it is avoided that the fixing frame cannot swing when the first driving member drives the fixing frame.

[0020] A transport vehicle comprises a vehicle body and any one of the wheel swinging devices described above, wherein the wheel swinging device is arranged on the vehicle body.

[0021] The transport vehicle adopts the wheel swing device, and can cross some special road conditions, such as mountain roads or steps on the road surface, during the travel process, and at the same time can improve the stability of the vehicle body and increase the safety performance of the transport vehicle.

[0022] In a possible implementation, the vehicle body includes a crossbeam, and the wheel swing device is movably disposed on the crossbeam via the cantilever.

[0023] Taking the case of a transport vehicle turning, when the transport vehicle makes a sharp turn, the wheel swing assembly moves on the crossbeam, increasing the distance between the two wheel swing assemblies relative to each other, thereby improving the stability of the transport vehicle and preventing the transport vehicle from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view schematic diagram of a wheel swinging device in one embodiment of the present application.

[0025] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the wheel swing device is shown.

[0026] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the wheel swing device from another perspective is shown.

[0027] Figure 4 It is a schematic structural diagram of a wheel swinging device in a first swinging state in one embodiment of the present application.

[0028] Figure 5 It is a schematic structural diagram of the wheel swinging device in an embodiment of the present application after being in the second swinging state.

[0029] Figure 6 It is a schematic structural diagram of the wheel swing device in a third swing state in one embodiment of the present application.

[0030] Figure 7 The present invention is another embodiment of the present invention, in which the wheel swinging device includes a three-dimensional structural schematic diagram of a second driving member.

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of a transport vehicle in another embodiment of the present application.

[0032] Fig. 9 for Figure 7 Schematic diagram of the structure in which the vehicle swing device in the transport vehicle is arranged on the cross beam.

[0033] Main component symbols

[0034] Wheel swing device 100

[0035] Fixed frame 10

[0036] First body 11

[0037] First through hole 111

[0038] First connection portion 12

[0039] Cantilever 20

[0040] Second body 21

[0041] The second through hole 211

[0042] Shaft 22

[0043] Wheel assembly 30

[0044] Wheel body 31

[0045] Tire 311

[0046] Wheel 312

[0047] The second connection portion 32

[0048] Connecting arm 321

[0049] The first driving member 40

[0050] First hydraulic cylinder 41

[0051] First piston rod 42

[0052] Universal ball bearing 50

[0053] Bushing 51

[0054] Universal ball 52

[0055] The second driving member 60

[0056] Second hydraulic cylinder 61

[0057] Second piston rod 62

[0058] Locking piece 70

[0059] Transporter 1

[0060] Car body 200

[0061] Beam 80 DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0063] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0065] An embodiment of the present application provides a wheel swing device, which is arranged on a transport vehicle. The wheel swing device includes a fixed frame, a cantilever, a wheel assembly and a first driving member. One end of the fixed frame is connected to the wheel assembly, and the cantilever is hinged to the fixed frame for installation on the transport vehicle. The first driving member is connected to the other end of the fixed frame away from the wheel assembly. The first driving member can drive the fixed frame to swing, and the fixed frame after swinging is used to provide supporting force to the wheel assembly.

[0066] Taking the case where the wheel swing device is installed on a transport vehicle as an example, after the first driving member drives the fixing frame to swing, the wheel assembly is driven to swing. After the wheel assembly swings to a preset angle, when encountering special road conditions, such as mountain roads or steps, it is easier to cross the steps or move toward the mountain road. At the same time, the center of gravity of the cantilever is lowered, which improves the stability of the wheel swing device and prevents the transport vehicle using the wheel swing device from tipping over.

[0067] Another embodiment of the present application further provides a transport vehicle, which includes a vehicle body and the above-mentioned wheel swing device, wherein the wheel swing device is arranged on the vehicle body.

[0068] The transport vehicle adopts the wheel swing device, which can reduce the vibration caused by the direct collision of the wheel assembly with obstacles during the moving process.

[0069] The following will further describe the embodiments of the present application in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0070] See also Figure 1, Figure 2 and Figure 3 , in order to better explain the connection relationship between the various structures, the description will be made in combination with the up-down, left-right and front-back coordinates. A wheel swing device 100 is provided, including a fixed frame 10, a cantilever 20, a wheel assembly 30 and a first driving member 40, wherein the wheel assembly 30 is connected to the left end of the fixed frame 10, the first driving member 40 is connected to the right end of the fixed frame 10, the cantilever 20 is arranged at the right end of the fixed frame 10 and is hinged to the fixed frame 10, and the first driving member 40 drives the fixed frame 10 to swing in a first plane, thereby changing the position of the cantilever 20 and allowing a movable distance to exist between the first driving member 40 and the fixed frame 10. The first plane is a plane formed by the left and right ends and the upper and lower ends.

[0071] See also Figure 2 and Figure 3 The fixing frame 10 includes a first body 11 and a first connecting portion 12. The first body 11 is roughly a rectangular block structure, and the first connecting portion 12 is roughly a connecting rod. The first connecting portion 12 extends from the first body 11 and is connected to the wheel assembly 30. The first body 11 is roughly perpendicular to the first connecting portion 12. The meaning of "roughly" is to look like, and it is not an absolute limitation. Preferably, the first connecting portion 12 is arranged at the left end of the first body 11, and the first driving member 40 is connected to the right end of the first body 11, and is hinged to the cantilever 20.

[0072] By using the first connecting portion 12 to connect with the wheel assembly 30, a certain space is created between the fixing frame 10 and the wheel assembly 30, thereby avoiding interference between the first body 11 and the wheel assembly 30. At the same time, other structures may be provided between the first body 11 and the wheel assembly 30 to improve the space utilization of the wheel swinging device 100.

[0073] It is understood that, in other embodiments, the shapes of the first body 11 and the first connecting portion 12 are not limited thereto. For example, the first body 11 may be replaced with other shapes such as a fan shape. In one embodiment, the first body 11 and the first connecting portion 12 may also be an integrally formed structure.

[0074] See also Figure 1 In one embodiment, a first through hole 111 is further provided on the first body 11 , and the first through hole 111 is for other structures to pass through, so as to simplify the structure of the wheel swing device 100 .

[0075] See also Figure 1 , Figure 2 and Figure 3 The cantilever 20 is located at the lower end of the first driving member 40, and includes a second body 21 and a rotating shaft 22, and the rotating shaft 22 is arranged on the second body 21 along the left-right direction. It can be understood that in other embodiments, the second body 21 and the rotating shaft 22 can be an integrally formed structure.

[0076] Specifically, the second body 21 is generally a hollow frame structure, and a second through hole 211 is provided on the second body 21 along the front-to-back direction. The second through hole 211 runs through the front and rear ends of the second body 21. The cantilever 20 is provided on the transport vehicle (not shown) through the second through hole 211, and is used to install the wheel swing device 100 on the transport vehicle. Preferably, the shape of the second through hole 211 can be adapted to the shape of the structure assembled on the transport vehicle, so that the second body 21 can be stably provided on the transport vehicle through the second through hole 211. At the same time, by sleeved on the transport vehicle through the second through hole 211, the installation between the wheel swing device 100 and the transport vehicle is simplified, and the assembly efficiency of the wheel swing device 100 is improved.

[0077] The first body 11 and the second body 21 are hingedly connected by the rotating shaft 22. Preferably, the first body 11 is provided with an axis hole (not shown), and the rotating shaft 22 is located in the axis hole, so that the first body 11 can rotate relative to the second body 21, and the rotating shaft 22 is used as the rotation center to realize the swing of the fixing frame 10.

[0078] It is understandable that, in other embodiments, the shaft hole and the rotating shaft 22 may be replaced, and the rotating shaft 22 may be provided on the first body 11 , and the shaft hole may be provided on the second body 21 .

[0079] See also Figure 2 and Figure 3 The wheel assembly 30 includes a wheel body 31 and a second connection portion 32. The second connection portion 32 is provided on the wheel body 31 and extends from the wheel body 31 to be connected to the first connection portion 12. Specifically, the wheel body 31 includes a tire 311 and a hub 312. The hub 312 is embedded in the tire 311 to support the tire 311. The second connection portion 32 is connected to the hub 312 and extends from the hub 312 in a direction toward the connection bracket. The second connection portion 32 is connected to the first connection portion 12.

[0080] In one embodiment, the wheel hub 312 in the wheel body 31 and the second connecting portion 32 may be an integrally formed structure, so that the wheel assembly 30 can be directly connected to the fixing frame 10, thereby simplifying the connection process and improving installation efficiency.

[0081] The second connection part 32 and the first connection part 12 can be connected in a hinged manner, for example, by the cooperation between the rotating shaft and the sleeve. It is understood that in other embodiments, the connection method of the second connection part 32 and the first connection part 12 is not limited to this, for example, it can also be replaced by a rotating buckle. By connecting the second connection part 32 with the first connection part 12, there is a certain space between the wheel body 31 and the first connection part 12, avoiding interference between the wheel body 31 and the first connection part 12.

[0082] See also Figure 3 In one embodiment, the second connecting portion 32 includes a connecting arm 321, which extends in the left-right direction. When viewed in the front-back direction, part of the connecting arm 321 is exposed from the first through hole 111. There is a space between the first body 11 and the wheel body 31, and the connecting arm 321 is located in the space, thereby improving the space utilization rate of the wheel swing device 100. The connecting arm 321 is used to connect with other structures. When other structures connected to the connecting arm 321 drive the connecting arm 321 to operate, the wheel swing device 100 can be driven to operate through the connecting arm 321.

[0083] Please refer to Figure 1 , Figure 2 and Figure 3 The first driving member 40 is used to drive the fixing frame 10 to swing. At the same time, because the first body 11 is hinged on the cantilever 20, along the left and right directions, when the first driving member 40 drives the first body 11, the first body 11 simultaneously rotates around the cantilever 20, thereby realizing the swing of the fixing frame 10 in the first plane.

[0084] Specifically, the first driving member 40 is a hydraulic cylinder. It can be understood that in other embodiments, the first driving member 40 can also be replaced by other structures with equivalent functions or effects. The first driving member 40 includes a first hydraulic cylinder 41 and a first piston rod 42. One end of the first piston rod 42 is connected to the first hydraulic cylinder 41, and the other end is connected to the fixed frame 10. The first hydraulic cylinder 41 drives the first piston rod 42 to extend and retract, thereby driving the fixed frame 10 to move. There is liquid in the first hydraulic cylinder 41, and the first piston rod 42 moves by changing the volume of the liquid. Hydraulic cylinders are commonly used in existing technologies, and they will not be described in detail here.

[0085] In one embodiment, in order to avoid the situation that the fixing frame 10 cannot swing when the first driving member 40 drives the fixing frame 10, a universal ball bearing 50 is provided between the first driving member 40 and the fixing frame 10. Specifically, the universal ball bearing 50 includes a sleeve 51 and a universal ball 52, and the universal ball 52 is provided in the sleeve 51, and the universal ball can rotate in the sleeve 51. In one embodiment, the sleeve 51 is provided in the first body 11, and the universal ball is connected to the first piston rod 42, so that after the first driving member 40 drives the fixing frame 10, the fixing frame 10 can swing more flexibly.

[0086] In one embodiment, the wheel swing device 100 includes two fixing frames 10 and two wheel assemblies 30, each of the fixing frames 10 is connected to one wheel assembly 30, and the first driving member 40 is respectively connected to the two fixing frames 10. One of the fixing frames 10 is connected to the first hydraulic cylinder 41, and the other fixing frame 10 is connected to the first piston rod 42. In order to make the structure of the wheel swing device 100 more concise, the two first bodies 11 use the same cantilever 20, and the two first bodies 11 are arranged at the left and right ends of the cantilever 20 and are respectively hinged to the cantilever 20.

[0087] When the wheel swing device 100 is disposed on the transport vehicle through the cantilever 20 , the two fixing frames 10 and the two wheel assemblies 30 are provided at the same time, so that the transport vehicle using the wheel swing device 100 has higher stability.

[0088] See also Figure 1 , Figure 1 The content shown is a schematic diagram of the structure of the first piston rod 42 in the first driving member 40 not driving the fixing frame 10 to swing, and the fixing frame 10 is arranged substantially in the horizontal direction. When the transport vehicle (not shown) provided with the wheel swinging device 100 travels on a flat road, the wheel assembly 30 is completely in contact with the road surface, so that the transport vehicle is relatively stable as a whole when traveling.

[0089] See also Figure 4 , the illustration takes the transport vehicle provided with the wheel swing device 100 as an example of crossing a step on the road surface. Figure 4The content shown is another structural schematic diagram after the first driving member 40 drives the fixing frame 10 to swing. After the first driving member 40 drives the fixing frame 10 to swing, the center of gravity of the cantilever 20 moves toward the lower end, thereby lowering the center of gravity of the structure on the transport vehicle connected to the cantilever 20. Specifically, when the transport vehicle using the wheel swing device 100 encounters an obstacle, such as a step, during the travel, the first driving member 40 can drive the fixing frame 10 to swing, and the first piston rod 42 can be retracted into the first hydraulic cylinder 41. When the right direction is taken as the forward direction, the right fixing frame 10 swings in the counterclockwise direction at a preset angle, so that the right wheel assembly 30 also swings in the counterclockwise direction. The fixing frame 10 provides the wheel assembly 30 with a supporting force along the upper right side. According to the force decomposition, the supporting force along the upper right side can be decomposed into a horizontal rightward force and a vertical upward force. If there is a step, since the wheel body 31 has a vertical upward force, the wheel body 31 is more likely to press onto the step and pass over the step, so that the wheel assembly 30 can move forward better. At the same time, the center of gravity of the cantilever 20 is lowered, which improves the stability of the wheel swing device 100.

[0090] When the vehicle is back on a flat road, in order to restore the vehicle with the wheel swing device 100 to a more stable state, the first piston rod 42 in the first driving member 40 partially extends from the first hydraulic cylinder 41, thereby driving the fixing frame 10 to swing back to the original position. Figure 1 The position in the middle enables the transport vehicle using the wheel swing device 100 to move stably.

[0091] See also Figure 5 , the figure takes the wheel swing device 100 passing through stones as an example. In order to better protect the transport vehicle equipped with the wheel swing device 100 from being damaged, when the transport vehicle equipped with the wheel swing device 100 passes through a road with stones, in order to prevent friction between the stones and the transport vehicle, the first driving member 40 drives the fixed frame 10 to swing. When the right direction is taken as the forward direction, the fixed frame 10 on the right side swings in a preset angle in the clockwise direction, and the fixed frame 10 on the left side swings in a preset angle in the counterclockwise direction, so that the center of gravity of the cantilever 20 moves upward, thereby increasing the center of gravity of the structure on the transport vehicle connected to the cantilever 20, so that the structure on the transport vehicle is higher from the ground, which can effectively avoid friction with obstacles such as stones on the road surface and damage to the transport vehicle.

[0092] See also Figure 6, the figure takes the wheel swing device 100 climbing a mountain road as an example. Taking the left side as the moving direction of the transport vehicle, when the transport vehicle equipped with the wheel swing device 100 climbs a mountain road, the first driving member 40 drives the fixing frame 10 to swing in the counterclockwise direction by a preset angle, thereby driving the wheel assembly 30 to swing, and the wheel assembly 30 is subjected to the upper left force provided by the fixing frame 10. According to the force decomposition, the upper left force can be decomposed into a force in the horizontal direction to the left and a force in the upward vertical direction. The vertical force enables the wheel assembly 30 to climb the slope more easily during the moving process, effectively improving the climbing efficiency of the transport vehicle equipped with the wheel swing device 100.

[0093] See also Figure 7 In one embodiment, the wheel swing device 100 further includes a second driving member 60, and the second driving member 60 is connected to the connecting arm 321. Further, the second driving member 60 passes through the first through hole 111 and is connected to the connecting arm 321. In the above embodiment, the connecting arm 321 is used to connect with other structures, and the other structures are the second driving member 60.

[0094] Preferably, the second driving member 60 is a hydraulic cylinder, and the second driving member 60 includes a second hydraulic cylinder 61 and a second piston rod 62, one end of the second piston rod 62 is arranged in the second hydraulic cylinder 61, and the other end is connected to the connecting arm 321, and the second hydraulic cylinder 61 can be arranged on the transport vehicle 1 for fixing. The second driving member 60 can drive the connecting arm 321, so that the wheel swing device 100 moves.

[0095] It is understandable that, in other embodiments, the second drive member 60 can also be replaced by other structures with equivalent functions or effects. In the present application, by adopting the first drive member 40 and the second drive member 60, the vibrations to which the transport vehicle is subjected during travel can be further reduced. The liquid in the hydraulic cylinder itself has a certain compression rate, and the movement between the two structures connected by the hydraulic cylinder within a certain range can achieve a shock-absorbing effect. By adopting the first drive member 40, the shock absorber in the transport vehicle can be omitted, and the purpose of shock absorption can be achieved directly by the first drive member 40.

[0096] Please refer to Figure 1In one embodiment, the wheel swing device 100 further includes a locking member 70, which is disposed at the connection position between the first connection portion 12 and the second connection portion 32. The first connection portion 12 and the second connection portion 32 are hinged, and during the process in which the second driving member 60 drives the connection arm 321 to move, the first connection portion 12 and the second connection portion 32 may rotate. In order to enable the wheel assembly 30 to move smoothly, the first connection portion 12 and the second connection portion 32 need to be locked to prevent the two from rotating.

[0097] Further, taking the first connection part 12 as a sleeve and the second connection part 32 as a rotating shaft as an example, the locking member is substantially perpendicular to the first connection part 12 and the second connection part 32. The locking member is a locking cylinder, and when the first connection part 12 and the second connection part 32 are to be locked, the locking member extends into the sleeve and abuts against the surface of the rotating shaft to limit the rotation of the rotating shaft, so that the first connection part 12 and the second connection part 32 are locked.

[0098] It is understandable that in other embodiments, the locking member is not limited thereto, and can be replaced by other structures with equivalent functions or effects, for example, a protruding column, and a locking hole adapted to the protruding column is provided on the rotating shaft. When the first connecting portion 12 and the second connecting portion 32 are to be locked, the protruding column is protruded into the locking hole, and locking can also be achieved.

[0099] The present application also relates to a control mechanism (not shown), which connects the first drive member 40 and the second drive member 60, and is used to control the start or shut down of the first drive member 40 or the second drive member 60, so that the first drive member 40 can drive the fixed frame 10 to swing, and the second drive member 60 can drive the connecting arm 321 to move. Further, the control mechanism is a controller. In one embodiment, the control mechanism is connected to the first drive member 40 and the second drive member 60 by wire connection. It is understandable that in other embodiments, the control mechanism can also be connected to the first drive member 40 and the second drive member 60 in other ways.

[0100] See also Figure 8 and Fig. 9 The embodiment of the present application further provides a transport vehicle 1, comprising a vehicle body 200 and the wheel swing device 100 in the above embodiment, wherein the wheel swing device 100 is arranged on the vehicle body 200. The transport vehicle 1 comprises the wheel swing device 100 in the above embodiment, and thus has all the beneficial effects of the wheel swing device 100, which will not be described in detail herein.

[0101] The vehicle body 200 includes a crossbeam 80, and the wheel swing device 100 is arranged on the crossbeam 80 through the cantilever 20. When the position of the cantilever 20 changes, the position of the crossbeam 80 connected to the cantilever 20 changes, thereby changing the center of gravity of the vehicle body 200. Specifically, the crossbeam 80 passes through the first through hole 111 on the cantilever 20, and the inner side wall of the first through hole 111 is adapted to the shape of the outer surface of the crossbeam 80, so that the wheel swing device 100 and the vehicle body 200 can be stably connected. Further, the left and right side walls of the first through hole 111 are arc-shaped, approaching the center of the first through hole 111, and the crossbeam 80 is provided with an arc-shaped slide groove at a position corresponding to the arc-shaped side wall. The crossbeam 80 and the cantilever 20 are arranged in a contoured manner, that is, the stability of the wheel swing device 100 is maintained, and the crossbeam 80 also plays a guiding role for the wheel swing device 100.

[0102] The second hydraulic cylinder 61 of the second driving member 60 may be disposed on the cross beam 80 . When the second driving member 60 drives the connecting arm 321 , the vehicle swinging device is able to move on the cross beam 80 .

[0103] In one embodiment, a plurality of the wheel swing devices 100 are provided on opposite sides of the vehicle body 200, and the wheel swing devices 100 are arranged opposite to each other. When the second driving member 60 drives the wheel swing device 100 to move, the distance between the two oppositely arranged wheel swing devices 100 increases, thereby improving the stability of the transport vehicle 1 during movement.

[0104] In summary, the wheel swing device 100 and the transport vehicle 1 provided in the embodiment of the present application, after the first driving member 40 drives the fixing frame 10 to swing, causes the wheel assembly 30 to swing. When the transport vehicle 1 travels on different road conditions, the wheel assembly 30 is adjusted according to the specific conditions of the road conditions, which can improve the efficiency of the transport vehicle 1 during travel and make it easier to cross obstacles. On the one hand, while improving the smoother travel of the transport vehicle 1, the stability of the transport vehicle 1 is also improved, and the use of the first driving member 40 to drive the fixing frame 10 can play a shock-absorbing role on the transport vehicle 1.

[0105] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A wheel swing device, provided on a transport vehicle, characterized in that: include: Wheel assembly; A fixing frame, one end of which is connected to the wheel assembly; A cantilever, hinged to the fixing frame, for mounting on the transport vehicle; A first driving member connected to the other end of the fixing frame away from the wheel assembly; The first driving member can drive the fixing frame to swing; The fixing frame includes a first connecting portion; The wheel assembly comprises a wheel body and a second connecting portion, wherein the second connecting portion is arranged on the wheel body and extends from the wheel body to be connected to the first connecting portion; The fixing frame further comprises a second driving member, wherein the second connecting portion comprises a connecting arm, the connecting arm is connected to the second driving member, and the second driving member drives the connecting arm to enable the fixing frame to move; the fixing frame comprises a first body, the first connecting portion extends from the first body, the first body and the cantilever are hinged and connected to the first driving member; the first body is provided with a first through hole, and the second driving member passes through the first through hole to connect to the connecting arm; The wheel swinging device comprises two wheel assemblies and two fixing frames, each of the fixing frames is connected to one wheel assembly, and the first driving member is respectively connected to the two fixing frames.

2. The wheel swinging device according to claim 1, characterized in that: The cantilever is provided with a second through hole, and the cantilever is sleeved on the transport vehicle through the second through hole, so as to install the wheel swing device on the transport vehicle.

3. The wheel swinging device according to claim 1, characterized in that: A universal ball bearing is provided between the first driving member and the fixing frame, and the universal ball bearing is used to enable the fixing frame to swing after the first driving member drives the fixing frame.

4. A transport vehicle, characterized in that: The invention comprises a vehicle body and a wheel swinging device as claimed in any one of claims 1 to 3, wherein the wheel swinging device is arranged on the vehicle body.

5. The transport vehicle according to claim 4, characterized in that: The vehicle body comprises a cross beam, and the wheel swing device is movably arranged on the cross beam through the cantilever.

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