A towing vehicle

Abstract

This utility model discloses a tractor, comprising: a frame, a wheel assembly, and a drive wheel. The wheel assembly includes a crossbeam, a swing axle, a drive wheel, and a pin. The crossbeam is located at one end of the frame and has a swing hole extending along its length. The swing axle passes through the swing hole, and its cross-sectional dimension is smaller than that of the swing hole. The pin is inserted into the swing axle and the crossbeam. The swing axle can swing up and down within the swing hole around the axis of the pin. The drive wheel is rotatably mounted on the swing axle. The drive wheel is rotatably mounted at the other end of the frame. This utility model provides a tractor that improves the ability to traverse rough roads and enhances traction.

Description

Technical Field

[0001] This utility model relates to the technical field of transportation vehicles, and in particular to a tractor. Background Technology

[0002] In industrial production and logistics transportation, it is often necessary to transport different types of goods from one place to another. These goods are diverse and usually require different types of cargo carriers for transportation and transfer. Since the cargo carriers themselves do not have their own power, specialized tractor units are needed for towing and transportation.

[0003] In existing tractor units, the four wheels are typically fixed directly to the frame. When traversing uneven terrain, one wheel often becomes airborne or makes insufficient contact with the ground, leading to rollover. This not only significantly impacts traction but also poses a safety hazard. Utility Model Content

[0004] Therefore, it is necessary to provide a tractor unit to solve the aforementioned technical problems.

[0005] A tractor unit, the tractor unit comprising: Frame; A swivel assembly includes a crossbeam, a swing bridge, a swivel wheel, and a pin. The crossbeam is disposed at one end of the frame and has a swing hole that extends along the length of the crossbeam. The swing bridge passes through the swing hole and has a cross-sectional dimension smaller than that of the swing hole. The pin is inserted into the swing bridge and the crossbeam. The swing bridge can swing up and down within the swing hole around the axis of the pin. The swivel wheel is rotatably disposed on the swing bridge. A drive wheel, rotatably mounted at the other end of the frame, is used to drive the tractor.

[0006] Optionally, the rotating wheel assembly further includes a connector, the upper part of which is fixedly disposed at one end of the swing bridge, and the lower part of which is connected to the rotating wheel, the rotating wheel being able to rotate relative to the connector.

[0007] Optionally, there are two connectors, two rotating wheels, and two driving wheels. The two connectors are respectively located at both ends of the swing bridge, the two rotating wheels are respectively connected to the two connectors, and the two driving wheels are respectively located on both sides of the frame.

[0008] Optionally, the wheel assembly has a socket that passes through the crossbeam and the swing bridge. The pin includes a pin head, a pin shaft, and a fixing member. The pin head is located at one end of the pin shaft, the pin shaft is inserted into the socket, and the fixing member is located at the other end of the pin shaft. The pin head and the fixing member are respectively located on opposite outer walls of the crossbeam.

[0009] Optionally, the tractor also includes a ball joint, which is mounted on the frame and is used to connect with a cargo carrier that carries the cargo.

[0010] Optionally, the tractor also includes an auxiliary wheel assembly, which is disposed at the other end of the frame and spaced apart from the drive wheel.

[0011] Optionally, the auxiliary wheel assembly includes a connecting rod and an auxiliary wheel, one end of the connecting rod is connected to the frame, and the other end of the connecting rod is connected to the auxiliary wheel, the auxiliary wheel being rotatable relative to the connecting rod.

[0012] Optionally, the tractor also includes a drive unit, which is disposed on the frame and connected to the drive wheel. The drive unit is used to drive the drive wheel to rotate relative to the frame, thereby moving the frame.

[0013] Optionally, the tractor also includes a controller, which is disposed on the vehicle frame and electrically connected to the drive unit. The controller is used to control the start and stop of the drive unit.

[0014] Optionally, the tractor unit also includes a handle connected to the crossbeam, the handle being used for gripping by an operator.

[0015] This utility model provides a tractor unit that connects a swing bridge and a crossbeam via pins. The swing bridge passes through swing holes in the crossbeam, allowing both ends of the swing bridge to swing up and down within the swing holes around the axis of the pins. When the tractor unit moves on uneven ground, the wheel assembly ensures that the wheels always maintain contact with the ground. When one wheel is forced to rise, the other wheel is pressed down, making it more firmly in contact with the ground, thereby improving the tractor unit's ground grip and ensuring wheel contact with the ground. Therefore, the tractor unit of this application improves the ability to traverse uneven roads and enhances traction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the tractor unit in one embodiment; Figure 2 This is a schematic diagram of the wheel assembly and frame in one embodiment; Figure 3 This is a schematic diagram of the pin structure in one embodiment; Figure 4 This is a schematic diagram of the crossbeam structure in one embodiment.

[0018] 1. Frame; 2. Sprocket assembly; 21. Crossbeam; 22. Swing axle; 23. Sprocket; 24. Pin; 241. Pin shaft; 242. Pin head; 243. Fixture; 25. Swing hole; 26. Connector; 27. Socket; 3. Drive wheel; 4. Ball joint; 5. Auxiliary wheel assembly; 51. Connecting rod; 52. Auxiliary wheel; 6. Drive unit; 7. Controller; 8. Handlebar; 9. Remote control.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] refer to Figures 1 to 3 This utility model provides a tractor, which includes a frame 1, a wheel assembly 2, and a drive wheel 3. The wheel assembly 2 includes a crossbeam 21, a swing bridge 22, a drive wheel 23, and a pin 24. The crossbeam 21 is disposed at one end of the frame 1 and has a swing hole 25 that extends through the length of the crossbeam 21. The swing bridge 22 passes through the swing hole 25 and has a cross-sectional dimension smaller than that of the swing hole 25. The pin 24 is inserted into the swing bridge 22 and the crossbeam 21. The swing bridge 22 can swing up and down within the swing hole 25 around the axis of the pin 24. The drive wheel 23 is rotatably disposed on the swing bridge 22. The drive wheel 3 is rotatably disposed at the other end of the frame 1 and can be driven to rotate relative to the frame 1 to move the frame 1.

[0024] This utility model provides a tractor unit that connects a swing bridge 22 and a crossbeam 21 via a pin 24. The swing bridge 22 passes through a swing hole 25 in the crossbeam 21, allowing both ends of the swing bridge 22 to swing up and down within the swing hole 25 around the axis of the pin 24. When the tractor unit moves on uneven ground, the wheel assembly 2 ensures that the wheels 23 always maintain contact with the ground. When one wheel 23 is forced to rise, the other wheel 23 is pressed down, making it more firmly in contact with the ground, thereby improving the tractor unit's ground contact and ensuring that the wheels 23 remain in contact with the ground. Therefore, the tractor unit of this application improves the ability to pass through uneven roads and enhances traction.

[0025] In addition, in the prior art, the four wheels of the tractor are directly fixed to the frame 1, and the bottom of the four wheels are required to be on the same plane. Therefore, the requirements for manufacturing and installation are very high. However, this application sets up a swing bridge 22 structure, which enables the wheel assembly 2 to have the ability to adapt to the terrain, reduces the manufacturing and installation cost of the wheel 23, allows for a larger tolerance range, and reduces the requirements for manufacturing and installation accuracy.

[0026] Specifically, the crossbeam 21 is fixedly connected to the front end of the frame 1. Both the crossbeam 21 and the swing bridge 22 are square tube structures, and the extension direction of the pin 24 is consistent with the travel direction of the tractor.

[0027] In this embodiment, the cross-sectional dimensions of the swing bridge 22 are 50mm high and 30mm wide, and the cross-sectional dimensions of the swing hole 25 are 74mm high and 34mm wide.

[0028] The rotation angle of the swing bridge 22 relative to the crossbeam 21 is approximately ±5° to avoid the chassis hitting the ground and the center of gravity of the tractor becoming unstable due to excessive angle.

[0029] refer to Figure 1 and Figure 2 The rotating wheel assembly 2 also includes a connector 26. The upper part of the connector 26 is fixedly disposed at one end of the swing bridge 22, and the lower part of the connector 26 is connected to the rotating wheel 23. The rotating wheel 23 can rotate relative to the connector 26.

[0030] In this embodiment, there are two connectors 26, two rotating wheels 23 and two drive wheels 3. The two connectors 26 are respectively located at both ends of the swing bridge 22, the two rotating wheels 23 are respectively connected to the two connectors 26, the two rotating wheels 23 are located on both sides of the front end of the frame 1, and the two drive wheels 3 are respectively located on both sides of the rear end of the frame 1.

[0031] refer to Figures 1 to 4 The rotating wheel assembly 2 has an insertion hole 27, which passes through the crossbeam 21 and the swing bridge 22. The insertion hole 27 is connected to the swing hole 25. The axial direction of the insertion hole 27 is perpendicular to the axial direction of the swing hole 25. The pin 24 includes a pin head 242, a pin shaft 241 and a fixing member 243. The pin head 242 is located at one end of the pin shaft 241, which is inserted into the insertion hole 27. The fixing member 243 is located at the other end of the pin shaft 241, and the pin head 242 and the fixing member 243 are respectively located on the opposite two outer side walls of the crossbeam 21.

[0032] Specifically, the insertion hole 27 includes a first insertion hole and a second insertion hole. The first insertion hole is provided through the crossbeam 21, and the second insertion hole is provided through the swing bridge 22. The first insertion hole and the second insertion hole have the same size, and the axes of the first insertion hole and the second insertion hole are aligned. The pin 241 passes through the first insertion hole and the second insertion hole.

[0033] Specifically, the insertion hole 27 is located in the middle of the crossbeam 21 and the swing bridge 22. The pin head 242 and the pin shaft 241 are integrally formed. The fixing member 243 is sleeved on the pin shaft 241, and the fixing member 243 and the pin shaft 241 are fastened together by threads. The insertion hole 27 and the pin 24 cooperate to realize the connection between the crossbeam 21 and the swing bridge 22. By setting the fixing member 243 and the pin head 242 to cooperate, the pin shaft 241 can be fixed in the insertion hole 27, preventing the pin shaft 241 from falling off.

[0034] refer to Figure 1 The tractor also includes a ball joint 4, which is mounted on the frame 1 and is used to connect with the cargo carrier. Specifically, the cargo carrier has a ball joint sleeve that engages with the ball joint 4, thereby connecting the cargo carrier and the tractor and driving the cargo carrier and the tractor to move synchronously, thus transferring the cargo.

[0035] refer to Figure 2 and Figure 4 The tractor also includes an auxiliary wheel assembly 5, which is detachably mounted on the other end of the frame 1 and spaced apart from the drive wheel 3.

[0036] In this embodiment, there are two auxiliary wheel assemblies 5. The two auxiliary wheel assemblies 5 are respectively disposed on the rear two sides of the frame 1, and the two auxiliary wheel assemblies 5 are located inside the two drive wheels 3.

[0037] refer to Figure 1 The auxiliary wheel assembly 5 includes a connecting rod 51 and an auxiliary wheel 52. One end of the connecting rod 51 is connected to the frame 1, and the other end of the connecting rod 51 is connected to the auxiliary wheel 52. The auxiliary wheel 52 can rotate relative to the connecting rod 51.

[0038] In this embodiment, there are two connecting rods 51 and two auxiliary wheels 52. The connecting rods 51 are roughly arranged in a Z-shape. The two connecting rods 51 are connected to the frame 1 respectively, and the two connecting rods 51 are located inside the two drive wheels 3. Specifically, the frame 1 includes two longitudinal beams distributed on both sides. The longitudinal beams are provided with through holes. The two connecting rods 51 are vertically inserted into the longitudinal beams and fixed to the longitudinal beams by bolts. The two auxiliary wheels 52 are connected to the two connecting rods 51 respectively, and the auxiliary wheels 52 are located behind the drive wheels 3.

[0039] Specifically, the diameter of the auxiliary wheel 52 is smaller than the diameter of the rotating wheel 23, and the diameter of the rotating wheel 23 is smaller than the diameter of the power wheel 3.

[0040] When the tractor unit traverses a level surface, the bottom surfaces of the rotating wheel 23 and the drive wheel 3 are flush, while the bottom surface of the auxiliary wheel 52 is higher than that of the drive wheel 3, meaning the auxiliary wheel 52 is suspended in the air. When the tractor unit moves, the rotating wheel 23 and the drive wheel 3 are in contact with the ground, while the auxiliary wheel 52 is not. This configuration prevents the tractor unit from tipping over when transporting heavy cargo on rough terrain, thus improving its stability.

[0041] refer to Figure 1The tractor also includes a drive unit 6, which is located at the bottom of the rear end of the frame 1. The drive unit 6 is connected to the drive wheel 3. The drive unit 6 is used to drive the drive wheel 3 to rotate relative to the frame 1, thereby moving the frame 1. In turn, the frame 1 drives the rotating wheel 23 to rotate. By changing the angle between the rotating wheel 23 and the drive wheel 3 through external force, the direction of movement of the frame 1 can be adjusted.

[0042] In this embodiment, the driving component 6 is a motor, and there are two driving components 6. The two driving components 6 are respectively connected to two power wheels 3.

[0043] refer to Figure 1 The tractor also includes a controller 7, which is mounted on the frame 1 and electrically connected to the drive unit 6. The controller 7 is used to control the start and stop of the drive unit 6.

[0044] In this embodiment, the controller 7 is electrically connected to the two drive components 6 respectively. The tractor of this application adopts a dual-motor drive structure. The two drive components 6 can be independently controlled by the controller 7, which can achieve a more reasonable torque distribution, reduce the risk of slippage, and is particularly suitable for steep slopes, muddy or icy roads. Steering can also be achieved by adjusting the speed difference between the two drive components 6, eliminating the need for traditional steering mechanisms or manual steering, simplifying the mechanical structure and reducing the physical exertion of the operator.

[0045] Furthermore, the controller 7 is also used to adjust the rotation direction of the drive wheel 3 via the drive component 6. The controller 7 drives the drive wheel 3 to rotate forward or backward via the drive component 6, thereby driving the frame 1 forward or backward. Reverse rotation of the drive component 6 can achieve zero-radius turning, i.e., turning around on the spot, which is more suitable for narrow spaces.

[0046] The tractor also includes a power supply, which is mounted on the chassis 1 and electrically connected to the two drive components 6. The power supply is used to power the two drive components 6.

[0047] In one embodiment, a power supply is electrically connected to a controller 7, which supplies power to the controller 7 and supplies power to the drive unit 6 via the controller 7.

[0048] refer to Figure 1 The tractor also includes a handle 8, which is connected to the crossbeam 21 and is used by the operator to grip. Specifically, the handle 8 is inclined relative to the crossbeam 21. In actual use, the user holds the handle 8 to prevent the movement direction of the frame 1 from deviating. When it is necessary to adjust the movement direction of the frame 1, a force can be directly applied to the handle 8 in the desired direction to deflect the movement direction of the frame 1 in the desired direction.

[0049] refer to Figure 1The tractor unit also includes a remote controller 9, which is wirelessly connected to the controller 7. The remote controller 9 is used to start or stop the drive unit 6 via the controller 7. The remote controller 9 is also used to adjust the rotation direction of the drive wheel 3 via the controller 7. Achieving traction or movement functions via wireless remote control offers greater flexibility and maneuverability compared to traditional tractor units or manual operation, enabling flexible movement in narrow, dangerous, or human-machine mixed working areas. It also offers safety and reliability, allowing for separation of personnel from the machine, avoiding operation in hazardous environments, and reducing the risk of injury.

[0050] The towing vehicle described in this application is small and flexible, used for towing trailers, yachts and other vehicles. It can be used on cement roads, gravel roads, grass, mud and other surfaces, and has a particular towing advantage in limited space and narrow spaces, which can meet the needs of families, businesses and other purposes.

[0051] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A tractor, characterized in that include: Frame; A swivel assembly includes a crossbeam, a swing bridge, a swivel wheel, and a pin. The crossbeam is disposed at one end of the frame and has a swing hole that extends along the length of the crossbeam. The swing bridge passes through the swing hole and has a cross-sectional dimension smaller than that of the swing hole. The pin is inserted into the swing bridge and the crossbeam. The swing bridge can swing up and down within the swing hole around the axis of the pin. The swivel wheel is rotatably disposed on the swing bridge. A drive wheel, rotatably mounted at the other end of the frame, is used to drive the tractor.

2. The tow vehicle of claim 1, wherein, The rotating wheel assembly also includes a connector, the upper part of which is fixedly disposed at one end of the swing bridge, and the lower part of which is connected to the rotating wheel, and the rotating wheel is rotatable relative to the connector.

3. The tow vehicle of claim 2, wherein, The number of the connector, the swivel wheel, and the drive wheel are all two. The two connectors are respectively located at both ends of the swing bridge, the two swivel wheels are respectively connected to the two connectors, and the two drive wheels are respectively located on both sides of the frame.

4. The tow vehicle of claim 1, wherein, The rotating wheel assembly has an insertion hole that passes through the crossbeam and the swing bridge. The pin includes a pin head, a pin shaft, and a fixing member. The pin head is located at one end of the pin shaft, the pin shaft is inserted into the insertion hole, and the fixing member is located at the other end of the pin shaft. The pin head and the fixing member are respectively located on the opposite two outer side walls of the crossbeam.

5. The tow vehicle of claim 1, wherein, The tractor also includes a ball joint, which is mounted on the frame and is used to connect with a cargo carrier that carries the cargo.

6. The tractor unit according to claim 1, characterized in that, The tractor also includes an auxiliary wheel assembly, which is located at the other end of the frame and spaced apart from the drive wheel.

7. The tractor unit according to claim 6, characterized in that, The auxiliary wheel assembly includes a connecting rod and an auxiliary wheel. One end of the connecting rod is connected to the vehicle frame, and the other end of the connecting rod is connected to the auxiliary wheel. The auxiliary wheel is rotatable relative to the connecting rod.

8. The tractor unit according to claim 1, characterized in that, The tractor also includes a drive unit, which is disposed on the frame and connected to the drive wheel. The drive unit is used to drive the drive wheel to rotate relative to the frame, thereby moving the frame.

9. The tractor unit according to claim 8, characterized in that, The tractor also includes a controller, which is mounted on the chassis and electrically connected to the drive unit. The controller is used to control the start and stop of the drive unit.

10. The tractor unit according to claim 1, characterized in that, The tractor also includes a handle connected to the crossbeam, which is used for the operator to grip.

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