A highly adaptable wheelset

Abstract

A highly adaptable wheelset belongs to the field of material handling equipment technology. This invention includes a wheelset frame, wheel plates, and load-bearing wheels. Two load-bearing wheels are rotatably connected between two wheel plates. The two wheel plates are rotatably connected to opposite sides within the wheelset frame. The wheelset frame is provided with a limiting structure to restrict the maximum upward swing angle of at least one wheel plate. This invention effectively avoids jamming when driving on uneven ground, resulting in higher maneuverability.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, and in particular to a highly adaptable wheel set for forklifts. Background Technology

[0002] Currently, forklifts often need to operate in environments with uneven ground. To address this, existing technologies, such as the patent document with authorization announcement number CN221854118U, disclose a pallet transporter whose front wheels employ a dual-wheel, vertically swinging structure to adapt to uneven ground, thereby improving its adaptability to uneven surfaces.

[0003] However, the aforementioned front-wheel structure is prone to jamming when driving on uneven ground, and its passability needs to be improved. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art and provide a highly adaptable wheelset that can effectively avoid jamming when driving on uneven ground and has better passability.

[0005] The objective of this utility model is achieved through the following technical solution: A highly adaptable wheelset includes a wheelset frame, wheel plates, and load-bearing wheels. Two load-bearing wheels are rotatably connected between two wheel plates. The two wheel plates are rotatably connected to opposite sides within the wheelset frame. The wheelset frame is provided with a limiting structure that restricts the maximum angle of upward swing of at least one wheel plate.

[0006] Preferably, the limiting structure includes four limiting screws, which are respectively located above the ends of the two wheel plates.

[0007] Preferably, the limiting screw is connected to the inner side of the wheel frame from the inside out.

[0008] Preferably, the limiting screw includes a head and a rod, the thickness of the head being greater than the distance between the wheel plate and the inner side of the wheel frame, and the length of the rod being less than the thickness of the side wall of the wheel frame.

[0009] Preferably, the head is circular.

[0010] Preferably, the maximum upward swing angle of the wheel plate is 3°-5°.

[0011] Preferably, the two load-bearing wheels are symmetrically arranged on both sides of the rotational connection point between the wheel plate and the wheel assembly frame.

[0012] Preferably, the wheel frame includes two side plates arranged opposite each other, and each side plate has a bent portion at its front end, with the two bent portions overlapping.

[0013] Preferably, both of the bent portions are inclined forward to form a guide structure.

[0014] Preferably, the lower front edge of the wheel frame is provided with an inclined guide surface.

[0015] The advantages of this utility model are: 1. By limiting the maximum upward swing angle of the wheel plate, the wheelset is prevented from getting stuck in ditches and bumps due to excessive swing angle, thus ensuring the wheelset's passability; 2. The limiting structure is simple, and the limiting function can be achieved with four limiting screws. It can be directly installed on existing wheelsets and is easy to promote and implement. 3. The guide structure at the front and bottom of the wheelset frame can effectively improve the passability of the entire wheelset. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a wheel assembly crossing a ditch in the prior art; Figure 2 This is a schematic diagram of a wheel assembly crossing a bump in the prior art; Figure 3 This is a schematic diagram of a highly adaptable wheelset provided in an embodiment of this specification; Figure 4 A front view of a highly adaptable wheelset provided for an embodiment of this specification; Figure 5 A top view of a highly adaptable wheelset provided as an embodiment of this specification; Figure 6 A schematic diagram of a highly adaptable wheel set for crossing a ditch, provided as an embodiment of this specification; Figure 7 A schematic diagram of a highly adaptable wheelset for crossing bumps, provided as an embodiment of this specification; In the diagram: 1-wheel frame; 11-side plate; 111-bending part; 101-inclined guide surface; 2-wheel plate; 3-load-bearing wheel; 4-limiting screw. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] As mentioned in the background section, the front and rear wheels of the vehicle can swing freely up and down according to the unevenness of the ground. Figure 1 As shown, if the dent is deep, the front wheel can easily get stuck in the dent; for example... Figure 2 As shown, if the protrusion is too high, the oscillation of the two wheels will affect the lifting of the wheelset frame, causing the wheelset frame to get stuck at the protrusion. Therefore, the existing wheelset structure has relatively poor passability.

[0019] Therefore, such as Figure 3-5 As shown, this embodiment provides a highly adaptable wheelset, including a wheelset frame 1, wheel plates 2, and load-bearing wheels 3. Two load-bearing wheels 3 are rotatably connected between two wheel plates 2. Specifically, the installation method can be to fix an axle between the two wheel plates 2, install two bearings on the axle, and install the load-bearing wheels 3 outside the bearings. The two wheel plates 2 are rotatably connected to opposite sides within the wheelset frame 1, specifically through bearings to achieve the rotatable connection between the wheel plates 2 and the wheelset frame 1. The inner ring of the bearing is connected to the wheel plate 2, and the outer ring of the bearing is connected to the wheelset frame 1. In this way, the two load-bearing wheels 3 form a whole through the two wheel plates, and this whole can swing within the wheelset frame 1 to adapt to changes in ground flatness.

[0020] To prevent wheel jamming, the wheel frame 1 is equipped with a limiting structure to restrict the maximum upward swing angle of the two wheel plates 2. This limiting structure consists of four limiting screws 4, each positioned above one of the four ends of the two wheel plates 2. It should be noted that because the load-bearing wheel 3 needs to partially protrude from the lower end of the wheel frame 1, the wheel plates 2 are mounted relatively low on the wheel frame 1. There is insufficient space on the wheel frame 1 below the wheel plates 2 to accommodate the limiting screws 4. Therefore, in this embodiment, the limiting screws 4 are positioned above the wheel plates 2. Since the front and rear load-bearing wheels 3 form a single unit through the two wheel plates 2, when the upward swing angle of the front wheel is restricted, the downward swing angle of the rear wheel is also restricted; conversely, when the upward swing angle of the rear wheel is restricted, the downward swing angle of the front wheel is also restricted. Therefore, only the upward swing angle of the wheel plates 2 needs to be restricted. Although restricting the upward swing angle of one wheel plate 2 would achieve the same purpose, to ensure the stability of the limiting effect, this embodiment restricts the upward swing angle of both wheel plates 2.

[0021] like Figure 6 As shown, when the wheelset passes through a deep ditch, the rear wheel swings upwards as the front wheel sinks. When the upward angle of the rear wheel is limited by the limit screw, the front wheel cannot sink further, so the front wheel will not get stuck in the ditch. At this point, the entire wheelset is supported solely by the rear wheel. After the front wheel passes through the ditch and contacts the ground, the rear wheel gradually enters the ditch. Similarly, at this point, the upward angle of the front wheel is limited by the limit screw, preventing the rear wheel from sinking too deep. The entire wheelset is then supported solely by the front wheel, and the entire wheelset successfully passes through the ditch.

[0022] like Figure 7 As shown, when the wheelset passes over a high bump, the front wheel gradually rises. When the upward swing of the front wheel is restricted, the front end of the wheelset frame will gradually rise and form an upward tilt. Therefore, when the entire wheelset continues to move forward, the wheelset frame will not rub against the bump or get stuck. At the same time, the forward power of the forklift can be effectively converted into the forward movement of the wheelset, rather than the swing of the wheelset.

[0023] In summary, the wheelset of this embodiment is less prone to jamming when traversing bumpy roads, and has better passability.

[0024] Specifically, the limiting screw 4 includes a head and a rod. Since the head structure has relatively higher strength, the limiting screw is connected to the inner side of the wheelset frame 1 from the inside out, thus using the head of the limiting screw 4 to limit the wheel plate 2. To ensure the limiting effect of the head, the thickness of the head is greater than the distance between the wheel plate 2 and the inner side of the wheelset frame 1; and to avoid interference between the limiting screw 4 and the outside of the wheelset frame 1, the length of the rod is less than the thickness of the sidewall of the wheelset frame 1. To ensure the consistency of the limiting effect of the four limiting screws, the head of the limiting screw 4 is preferably round to avoid the hexagonal head affecting the limiting degree due to different tightening angles.

[0025] Under normal circumstances, the maximum upward swing angle of the wheel plate 2 is 3°-5° to ensure the smoothness of the wheelset when passing over ditches and bumps. In order to ensure the consistency of the swing amplitude of the two load-bearing wheels 3, the two load-bearing wheels 3 are symmetrically arranged on both sides of the rotation connection point between the wheel plate 2 and the wheel set frame 1.

[0026] The wheelset frame 1 includes two opposing side plates 11. Each side plate 11 has a bent portion 111 at its front end, and the two bent portions 111 overlap to prevent debris from entering the wheelset as it moves forward. To prevent debris from obstructing the wheelset frame's movement, both bent portions 111 are angled forward to form a guide structure. Additionally, to prevent friction or jamming between the front of the wheelset frame 1 and the ground, an inclined guide surface 101 is provided along the lower front edge of the wheelset frame 1. Of course, in practical applications, conventional connecting structures, such as connecting blocks or connecting rods, are also provided between the rear ends of the two side plates to form a structurally stable whole.

[0027] The above are merely preferred embodiments of this utility model, and are implementations based on the overall concept of this utility model. Furthermore, the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A high-adaptability wheel set, comprising a wheel set frame, a wheel plate, and a load wheel, two load wheels being rotatably connected between two wheel plates, and the two wheel plates being rotatably connected with opposite sides in the wheel set frame, characterized in that, The wheelset frame is equipped with a limiting structure that restricts the maximum angle of upward swing of at least one wheel plate.

2. A high adaptability wheel set according to claim 1, characterized in that, The limiting structure includes four limiting screws, which are respectively located above the ends of the two wheel plates.

3. A high adaptability wheel set according to claim 2, characterized in that, The limiting screw is connected to the inner side of the wheel frame from the inside out.

4. A high adaptability wheel set according to claim 3, characterized in that, The limiting screw includes a head and a rod. The thickness of the head is greater than the distance between the wheel plate and the inner side of the wheel frame, and the length of the rod is less than the thickness of the side wall of the wheel frame.

5. A high adaptability wheel set according to claim 4, characterized in that, The head is specifically circular.

6. A high adaptability wheel set according to claim 1, characterized in that, The maximum upward swing angle of the wheel plate is 3°-5°.

7. A high adaptability wheel set according to claim 1, characterized in that, The two load-bearing wheels are symmetrically arranged on both sides of the rotational connection point between the wheel plate and the wheel assembly frame.

8. A high adaptability wheel set according to claim 1, characterized in that, The wheel frame includes two side plates arranged opposite each other, and each side plate has a bent portion at its front end, with the two bent portions overlapping.

9. A high adaptability wheel set according to claim 8, characterized in that, Both of the aforementioned bends are inclined forward to form a guide structure.

10. A high adaptability wheel set according to claim 1, characterized in that, The lower front edge of the wheel frame is provided with an inclined guide surface.

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