A front wheel assembly, chassis assembly and trike

Abstract

The utility model relates to the technical fields of three -way car, and specifically disclose a front wheel assembly, chassis assembly and three -way car, and the front wheel assembly includes support arm, wheel frame, first wheel body and second wheel body, wheel frame is arranged in the front end of support arm, both sides of wheel frame middle part are all through the pivot rotatable with both sides of support arm hinged, and the pivot is equipped with the composite bushing with elasticity between support arm, first wheel body is installed in the first end of wheel frame, second wheel body is installed in the second end of wheel frame, when meeting the road of bump, first wheel body and second wheel body will transmit the impact force to wheel frame, and wheel frame can extrude composite bushing through pivot, and composite bushing has elasticity, namely certain deformation ability, and a part of impact force can be absorbed through its deformation, and then the position of wheel frame is adjusted, and the impact force transmitted to support arm on pivot is reduced, and then the vibration amplitude of support arm is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of three-way vehicles, specifically to a front wheel assembly, chassis assembly, and three-way vehicle. Background Technology

[0002] The front wheel assembly is a crucial component of a forklift, primarily providing rolling support for the front end. To enhance its support effectiveness, at least two wheels are typically arranged on the same side to distribute the load across that side, preventing excessive stress on any single wheel and extending its lifespan. To adapt to various terrain conditions, the two wheels are hinged to the support arm via a wheel carrier. The alternating raising and lowering of the two wheels improves the forklift's passability. However, while this improves passability, when encountering bumpy surfaces, the impact on the wheels is transmitted to the wheel carrier, which then directly transfers the impact to the support arm. This results in significant vibrations and poor shock absorption for the entire forklift. Utility Model Content

[0003] This utility model was developed in consideration of the aforementioned problems. The purpose of this utility model is to provide a front wheel assembly, chassis assembly, and three-way vehicle that can significantly improve the shock absorption performance of the three-way vehicle.

[0004] To achieve the above objectives, this utility model provides a front wheel assembly, comprising:

[0005] Support arm;

[0006] A wheel frame is arranged inside the front end of the support arm. Both sides of the middle part of the wheel frame are rotatably hinged to the two sides of the support arm through a pivot. An elastic composite bushing is provided between the pivot and the support arm.

[0007] The first wheel body is mounted on the first end of the wheel frame;

[0008] The second wheel is mounted on the second end of the wheel frame.

[0009] According to the aforementioned front wheel assembly, the composite bushing includes a first metal layer, an elastic layer, and a second metal layer, wherein the elastic layer is located between the first metal layer and the second metal layer.

[0010] According to the aforementioned front wheel assembly, the wheel frame is H-shaped, and the wheel frame includes a first side plate and a second side plate arranged opposite to each other. A connecting arm is provided between the middle of the first side plate and the second side plate, and the pivot is inserted through the connecting arm.

[0011] According to the aforementioned front wheel assembly, mounting holes are provided on both symmetrical sides of the support arm, the composite bushing covers both ends of the rotating shaft, and the two ends of the rotating shaft covered by the composite bushing can respectively extend into the two mounting holes.

[0012] According to the aforementioned front wheel assembly, at least two limiting blocks are provided on one or both sides of the support arm. The limiting blocks are located directly above the ends of the first side plate and / or the second side plate, and the top of the first side plate and / or the second side plate can abut against the bottom of the limiting blocks.

[0013] According to the aforementioned front wheel assembly, the limiting block is made of an elastic material.

[0014] According to the aforementioned front wheel assembly, there are four limiting blocks in total. The four limiting blocks are symmetrically arranged in pairs on both sides of the support arm, with two of the limiting blocks located directly above the two ends of the first side plate and the other two limiting blocks located directly above the two ends of the second side plate.

[0015] According to the aforementioned front wheel assembly, the first wheel body is mounted between the first end of the first side plate and the first end of the second side plate via an elastic pin, and the second wheel body is mounted between the second end of the first side plate and the second end of the second side plate via an elastic pin.

[0016] A chassis assembly, comprising:

[0017] Chassis components, including a chassis;

[0018] The rear wheel assembly is located at the rear end of the chassis;

[0019] The front wheel assembly, as described above, is arranged on both sides of the front end of the chassis.

[0020] A three-way vehicle, comprising:

[0021] The chassis assembly as described above;

[0022] A mast assembly is located on the front side of the chassis;

[0023] The fork assembly is height-adjustable and mounted on the mast assembly.

[0024] This utility model has the following beneficial effects:

[0025] 1. The wheel frame is hinged to the support arm via a pivot, and an elastic composite bushing is provided between the pivot and the support arm. When the first or second wheel transmits vibration to the wheel frame, the elastic deformation of the composite bushing absorbs part of the impact energy, thereby achieving a buffering and shock absorption effect and improving the overall shock absorption effect.

[0026] 2. The composite bushing includes a first metal layer, an elastic layer and a second metal layer. The elastic layer is located between the first metal layer and the second metal layer. It combines rigidity and elasticity, maintaining torsional stiffness while reducing fatigue damage to the elastomer under high load.

[0027] 3. Limiting blocks are provided on the support arm to limit the wheel frame, prevent it from moving excessively, and improve overall stability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the three-way vehicle in the embodiment;

[0029] Figure 2 This is a schematic diagram of the front wheel assembly structure in an embodiment;

[0030] Figure 3 This is a schematic diagram of the assembly structure of the wheel frame, the first wheel body, and the second wheel body in an embodiment;

[0031] Figure 4 This is a schematic diagram of the wheel frame structure in an embodiment.

[0032] In the picture:

[0033] 100. Front wheel assembly; 110. Support arm; 111. Limiting block; 120. Wheel frame; 121. Axle; 122. Composite bushing; 123. First side plate; 124. Second side plate; 125. Connecting arm; 130. First wheel body; 140. Second wheel body; 141. Elastic pin;

[0034] 200. Chassis components; 210. Chassis;

[0035] 300. Rear wheel assembly;

[0036] 400. Gantry assembly;

[0037] 500. Forklift Assembly. Detailed Implementation

[0038] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] like Figure 1-4 As shown, a front wheel assembly includes a support arm 110, a wheel frame 120, a first wheel body 130, and a second wheel body 140. The first wheel body 130 and the second wheel body 140 are hinged to the support arm 110 via the wheel frame 120, thereby providing rolling support for the front end of the support arm 110.

[0040] The wheel frame 120 is located inside the front end of the support arm 110. Both sides of the middle portion of the wheel frame 120 are rotatably hinged to the sides of the support arm 110 via pivots 121. An elastic composite bushing 122 is provided between the pivots 121 and the support arm 110. A first wheel 130 is rotatably mounted on the first end of the wheel frame 120, and a second wheel 140 is rotatably mounted on the second end of the wheel frame 120. When encountering bumpy roads, the first wheel 130 and the second wheel 140 transmit the impact force to the wheel. The wheel frame 120 is mounted on a frame 120. The frame 120 can compress the composite bushing 122 through the pivot 121. The composite bushing 122 is elastic, that is, it has a certain deformation capacity. Through its deformation, it can absorb part of the impact force, thereby adjusting the position of the wheel frame 120. At the same time, it reduces the impact force transmitted from the pivot 121 to the support arm 110, thereby reducing the vibration amplitude of the support arm 110. Moreover, by alternating the rise and fall of the first wheel body 130 and the second wheel body 140, it can cross obstacles and smoothly pass through bumpy roads.

[0041] In this embodiment, since the front wheel assembly 100 is used in a three-way forklift, the front wheel assembly 100 needs to bear a large load when the forks pick up goods. Therefore, two wheels, a first wheel body 130 and a second wheel body 140, are arranged at the front end of each support arm 110. When traveling on a level road, the load on each support arm 110 can be shared by the first wheel body 130 and the second wheel body 140, which can avoid excessive force on a single wheel body and improve the service life of the wheel body.

[0042] Of course, since the front wheel assembly 100 needs to bear a large load, the composite bushing 122 is required to have a high radial load bearing capacity, and at the same time, the composite bushing 122 is required to have a certain elastic deformation capacity. In order to meet the above two conditions at the same time, the composite bushing 122 includes a first metal layer, an elastic layer and a second metal layer. The elastic layer is located between the first metal layer and the second metal layer. The first metal layer and the second metal layer can enhance the radial stiffness and load bearing capacity of the composite bushing 122, while the elastic layer can ensure its deformation damping capacity. At the same time, the first metal layer and the second metal layer can protect the elastic layer. While maintaining torsional stiffness, they can reduce fatigue damage of the elastic layer under high load. In addition, the first metal layer and the second metal layer can withstand a certain amount of oil and rough surfaces, making assembly simpler.

[0043] Therefore, the composite bushing 122 is suitable for equipment with high load and strong impact requirements, such as the forklift in this embodiment.

[0044] Furthermore, the wheel frame 120 is H-shaped in general, and includes a first side plate 123 and a second side plate 124 arranged opposite to each other. A connecting arm 125 is provided between the middle of the first side plate 123 and the second side plate 124. The rotating shaft 121 passes through the connecting arm 125. The connecting arm 125 can ensure that the first side plate 123 and the second side plate 124 can rotate synchronously, providing support for the first wheel body 130 and the second wheel body 140.

[0045] Furthermore, mounting holes are provided on both sides of the support arm 110. The composite bushing 122 covers both ends of the rotating shaft 121, and the two ends of the rotating shaft 121 covered by the composite bushing 122 can be inserted into the two mounting holes respectively. That is, not many composite bushings 122 are needed, just enough to cover both ends of the rotating shaft 121, which can effectively reduce costs while ensuring the vibration damping requirements of the rotating shaft 121.

[0046] Furthermore, at least two limiting blocks 111 are provided on one or both sides of the support arm 110. These limiting blocks 111 are located directly above the ends of the first side plate 123 and / or the second side plate 124, and the tops of the first side plate 123 and / or the second side plate 124 can abut against the bottoms of the limiting blocks 111. There are three scenarios: First, the two limiting blocks 111 are positioned directly above both ends of the first side plate 123. When the wheel frame 120 rotates around the pivot 121, upon reaching a preset angle, the top of the first side plate 123 will abut against the bottom of the limiting blocks 111, restricting further upward rotation of the first side plate 123. Since the second side plate 124 is connected to the first side plate 123 via the connecting arm 125, the second side plate 124 also cannot continue to rotate. The second scenario is that the two limiting blocks 111 are positioned directly above both ends of the second side plate 124. Directly above the end, when the wheel frame 120 rotates around the pivot 121, it rotates to a preset angle, and the top of the second side plate 124 abuts against the bottom of the limiting block 111, restricting the second side plate 124 from continuing to rotate upward. Since the first side plate 123 and the second side plate 124 are connected by the connecting arm 125, the first side plate 123 also cannot continue to rotate. In the third case, multiple limiting blocks 111 are symmetrically arranged on both sides of the support arm 110. When the wheel frame 120 rotates around the pivot 121, it rotates to a preset angle, and the first side plate 123 and the second side plate 124 abut against the bottom of the limiting block 111 at the same time, thereby restricting the wheel frame 120 from continuing to rotate. That is, the limiting block 111 can limit the height of the first wheel body 130 and the second wheel body 140 from floating, thereby avoiding the overall instability of the vehicle body caused by excessive floating and improving stability performance.

[0047] In this embodiment, the third method is adopted. There are four limiting blocks 111 in total. The four limiting blocks 111 are symmetrically arranged in pairs on both sides of the support arm 110. Two of the limiting blocks 111 are located directly above the two ends of the first side plate 123, and the other two limiting blocks 111 are located directly above the two ends of the second side plate 124. That is, the first side plate 123 and the second side plate 124 are limited at the same time to avoid shaking caused by limiting one side, thereby improving the stability of the wheel frame 120 when limiting.

[0048] Furthermore, in this embodiment, the limiting block 111 is made of elastic material. When the first side plate 123, the second side plate 124 and the limiting block 111 collide, the limiting block 111 can not only limit the impact but also buffer it to prevent the impact from being too violent.

[0049] Furthermore, the first wheel 130 is installed between the first end of the first side plate 123 and the first end of the second side plate 124 via an elastic pin 141, and the second wheel 140 is installed between the second end of the first side plate 123 and the second end of the second side plate 124 via an elastic pin 141. The elastic pin 141 itself has a certain elasticity, so when the ground is bumpy, the first wheel 130 and the second wheel 140 can absorb part of the impact force through the elastic pin 141 for the first absorption, and then the composite bushing 122 on the outside of the pivot 121 will absorb it for the second time, which can further improve the shock absorption performance of the front wheel assembly 100.

[0050] A chassis assembly 210 includes a chassis component 200, a rear wheel component 300, and a front wheel component 100. The chassis component 200 includes a chassis 210. The rear wheel component 300 is arranged at the rear end of the chassis 210, and the front wheel component 100 is arranged on both sides of the front end of the chassis 210. That is, the rear wheel component 300 can provide rolling support for the rear end of the chassis 210, and the front wheel component 100 can provide rolling support for the front end of the chassis 210. One of the wheels in the rear wheel component 300 can be set as a drive wheel, thereby realizing the overall displacement of the chassis 210 and facilitating the displacement of other components.

[0051] A three-way vehicle includes a chassis assembly 210, a mast assembly 400, and a fork assembly 500. The mast assembly 400 is located at the front of the chassis 210. The fork assembly 500 is vertically mounted on the mast assembly 400. The chassis assembly 210 can drive the mast assembly 400 and the fork assembly 500 to move through the front wheel assembly 100 and the rear wheel assembly 300 at its bottom. The mast assembly 400 provides support for the lifting of the fork assembly 500. The fork assembly 500 is used to pick up goods and cooperate to realize the handling of goods.

[0052] In this embodiment, a front wheel assembly 100, a chassis 210 assembly, and a three-way vehicle are disclosed. The front wheel assembly 100 includes a support arm 110, a wheel frame 120, a first wheel body 130, and a second wheel body 140. The wheel frame 120 is arranged inside the front end of the support arm 110. Both sides of the middle part of the wheel frame 120 are rotatably hinged to both sides of the support arm 110 through a pivot 121. An elastic composite bushing 122 is provided between the pivot 121 and the support arm 110. The first wheel body 130 is installed at the first end of the wheel frame 120, and the second wheel body 140 is installed at the second end of the wheel frame 120. When encountering bumps... When the road surface is bumpy, the first wheel 130 and the second wheel 140 will transmit the impact force to the wheel frame 120. The wheel frame 120 can squeeze the composite bushing 122 through the pivot 121. The composite bushing 122 has elasticity, that is, a certain deformation capacity. Through its deformation, it can absorb part of the impact force, thereby adjusting the position of the wheel frame 120. At the same time, it reduces the impact force transmitted from the pivot 121 to the support arm 110, thereby reducing the vibration amplitude of the support arm 110. Moreover, by the alternating rise and fall of the first wheel 130 and the second wheel 140, it can cross obstacles and pass smoothly over bumpy roads.

[0053] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0054] 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.

[0055] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A front wheel assembly, characterized in that, include: Support arm; A wheel frame is arranged inside the front end of the support arm. Both sides of the middle part of the wheel frame are rotatably hinged to the two sides of the support arm through a pivot. An elastic composite bushing is provided between the pivot and the support arm. The first wheel body is mounted on the first end of the wheel frame; The second wheel is mounted on the second end of the wheel frame.

2. A front wheel assembly according to claim 1, characterized in that, The composite bushing includes a first metal layer, an elastic layer, and a second metal layer, with the elastic layer located between the first metal layer and the second metal layer.

3. A front wheel assembly according to claim 1, characterized in that, The wheel frame is H-shaped and includes a first side plate and a second side plate arranged opposite to each other. A connecting arm is provided between the middle of the first side plate and the second side plate, and the rotating shaft passes through the connecting arm.

4. A front wheel assembly according to claim 3, characterized in that, Mounting holes are provided on both sides of the symmetrical support arm. The composite bushing covers both ends of the rotating shaft, and the two ends of the rotating shaft covered by the composite bushing can respectively extend into the two mounting holes.

5. A front wheel assembly according to claim 3, characterized in that, At least two limiting blocks are provided on one or both sides of the support arm. The limiting blocks are located directly above the ends of the first side plate and / or the second side plate, and the top of the first side plate and / or the second side plate can abut against the bottom of the limiting blocks.

6. A front wheel assembly according to claim 5, characterized in that, The limiting block is made of elastic material.

7. A front wheel assembly according to claim 5, characterized in that, There are four limiting blocks in total. The four limiting blocks are symmetrically arranged in pairs on both sides of the support arm. Two of the limiting blocks are located directly above the two ends of the first side plate, and the other two limiting blocks are located directly above the two ends of the second side plate.

8. A front wheel assembly according to claim 3, characterized in that, The first wheel is mounted between the first end of the first side plate and the first end of the second side plate via an elastic pin, and the second wheel is mounted between the second end of the first side plate and the second end of the second side plate via an elastic pin.

9. A chassis assembly, characterized in that, include: Chassis components, including a chassis; The rear wheel assembly is located at the rear end of the chassis; The front wheel assembly as described in any one of claims 1-8 is arranged on both sides of the front end of the chassis.

10. A three-way vehicle, characterized in that, include: The chassis assembly as described in claim 9; A mast assembly is located on the front side of the chassis; The fork assembly is height-adjustable and mounted on the mast assembly.

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