A self-aligning shock-absorbing wheel side mechanism

Abstract

The present invention discloses a self-aligning shock-absorbing wheel side mechanism, which includes an axle. Rolling components are respectively installed at the end parts of the axle. A wheel component is arranged outside the rolling components. A flexible buffer tensioning component is clamped between the wheel component and the rolling components. The flexible buffer tensioning component includes a buffer elastic member with an annular structure. Baffles for supporting and applying fastening pressure are respectively and fixedly installed on both sides of the buffer elastic member. The structure of the present invention is reasonably designed. By arranging a plastic rubber ring or other elastic materials at the rolling components between the wheel axle and the wheel, the wheel component has a certain flexibility. In the case of deformation of the elastic material, the wheel hub is allowed to roll by a certain angle while twisting on the wheel axle. The structure is simple, easy to implement, flexible and changeable, and flexible to use. The shock-absorbing performance is adjustable, and it is particularly applicable to light engineering vehicles such as small-tonnage battery forklifts, tractors, and AGV handling carts.

Description

Technical Field

[0001] The present invention relates to the field of machinery, and specifically to a self-aligning shock-absorbing wheel side mechanism. Background Art

[0002] Due to the load-bearing problem of industrial vehicles, a rigid connection is mostly adopted between the wheel axle and the wheel hub, that is: a rolling component such as a bearing or a bearing bush is used for transitional connection between the wheel axle and the wheel hub, so that while the wheel hub maintains a certain load-bearing capacity, rotation is also taken into account. When the vehicle is running, the shock-absorbing effect of the wheel assembly is poor, and when encountering a slope or a bumpy road surface, the adhesion between the tire and the ground is not strong, affecting the driving stability.

[0003] There are the following disadvantages:

[0004] 1) The rigid connection between the wheel axle and the wheel makes it impossible for the tire to contact the bottom surface well when the load is large or the road surface is inclined, affecting the driving stability of the vehicle;

[0005] 2) When the vehicle is jolted, there is no good shock-absorbing buffer between the wheel axle and the wheel, which causes great damage to the rigid connecting parts;

[0006] 3) The overall shock-absorbing buffer points of the vehicle are limited, and the shock-absorbing ability is restricted. Summary of the Invention

[0007] The purpose of the present invention is to overcome the defects and deficiencies existing in the prior art, and provide a self-aligning shock-absorbing wheel side mechanism, which solves various problems existing in the prior art, is easy to implement, flexible and variable, easy to use, and the shock-absorbing performance can be adjusted, especially for light engineering vehicles such as small-tonnage battery forklifts, tractors, and AGV handling carts.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A self-aligning shock-absorbing wheel side mechanism includes an axle, rolling components are respectively installed at the ends of the axle, a wheel assembly is arranged outside the rolling components, a flexible buffer tensioning component is clamped between the wheel assembly and the rolling components, the flexible buffer tensioning component includes a buffer elastic member with an annular structure, and baffles for supporting and applying a fastening pressure are respectively fixedly installed on both sides of the buffer elastic member.

[0010] The rolling components are bearings, bearing bushes, bushings or other components that can support rotation; the wheel assembly is a rotary support device, including a tire, a rim or a rim and tire assembly.

[0011] The buffer elastic member only adopts a single material with plasticity or elasticity, and is a rubber O-ring, a rubber pad or other plastic components.

[0012] The cross-section of the buffer elastic member is rectangular. After the buffer elastic member is sleeved, baffles are fixed at both ends. The baffles are connected and fixed to the buffer elastic member through fasteners. The fasteners are composed of bolts or screws, nuts, bushings or expansion sleeves, and the fastening pressure of the fasteners is adjustable.

[0013] There is a set of the buffer elastic members, which are sleeved on the rolling components, and the wheel components are sleeved on the buffer elastic members.

[0014] There are two sets of the buffer elastic members, which are sleeved on both ends of the rolling components, and the wheel components are sleeved on the buffer elastic members.

[0015] There are gaps between the baffles and both the wheel components and the rolling components, and the gap values are between 2 - 4 mm.

[0016] The buffer elastic member is composed of a cage and several rubber rings. The cage is made of a flexible material and has a certain toughness. Grooves that alternate inside and outside are arranged on the inner and outer side surfaces of the cage in sequence. The rubber rings include inner rubber rings and outer rubber rings, and the inner rubber rings and the outer rubber rings are respectively clamped into the corresponding grooves.

[0017] An alternating distance for ensuring a compression space needs to be left between the centers of the cross-sections of the inner rubber rings and the outer rubber rings, and the alternating distance is 2 - 4 mm.

[0018] The minimum inner diameter dimension of the cage needs to be greater than the minimum distance of the inner rubber rings after clamping, and the maximum outer diameter dimension of the cage needs to be less than the maximum distance after the outer rubber rings are clamped.

[0019] The baffles are sleeved on the wheel components on both sides of the buffer elastic member. The inner diameter dimension of the baffles is greater than the minimum distance of the inner rubber rings after clamping, and the outer diameter dimension is greater than the maximum distance of the outer rubber rings after clamping; the inner baffle is clamped and limited through the installation step of the wheel axle, and the outer baffle is pressed and positioned through the pressing nut at the end.

[0020] The principle is as follows: By adding a flexible buffer tensioning component between the wheel axle and the wheel components, the wheel components have a certain flexibility. Through the deformation of the material, the influence brought by the load deformation or the road surface inclination and bumps is overcome, so that the tire can better fit the ground, and an effective shock absorption and buffering can be formed inside the wheel components to protect the internal components of the wheel components and enhance the shock absorption performance of the vehicle. At the same time, the shock absorption and buffering performance can be changed by adjusting the fastening pressure.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1) An effective buffering effect is formed between the wheel axle and the wheels through the flexible buffer tensioning component, reducing the damage of internal rigid devices, such as bearings, axle bushes, etc.;

[0023] 2) The uneven deformation on both sides of the flexible buffer tensioning component causes a certain angular change between the wheel axle and the wheel rim, enabling the tire to better adapt to bumpy roads;

[0024] 3) By changing the fastening pressure acting on the flexible buffer tensioning component, different degrees of pre-deformation force are generated inside it to adjust the impact resistance of the wheel rim component and the locking force between the wheel axle and the wheel rim. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the front view of the present invention.

[0026] Figure 2 This is the side view of the present invention.

[0027] Figure 3 This is the schematic assembly structure diagram with two groups of buffer elastic members.

[0028] Figure 4 This is the schematic structure diagram of another form with two groups of buffer elastic members.

[0029] Figure 5 This is the schematic structure diagram of the buffer elastic member using a combination of a cage and a rubber ring.

[0030] Figure 6 This is Figure 5 the schematic installation and use structure diagram of

[0031] Figure 7 This is the schematic diagram of the flexible buffer tensioning component using a spiral structure.

[0032] Figure 8 This is the schematic structure diagram of the flexible buffer tensioning component using a spacer sleeve type.

[0033] REFERENCE NUMERALS:

[0034] 1. Axle; 2. Rolling component; 3. Wheel assembly; 4. Flexible buffer tensioning component; 5. Buffer elastic member; 6. Baffle; 7. Fastener; 8. Cage; 9. Rubber ring; 10. Groove; 9-1. Inner rubber ring; 9-2. Outer rubber ring; 11. Installation step; 12. Compression nut; 13. Second groove; 14. Second inner rubber ring; 15. Second outer rubber ring; 16. Spacer sleeve; 17. Third rubber ring; 18. Hub; 19. Compression cover; 20. Vehicle body. DETAILED DESCRIPTION OF THE INVENTION

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] See the accompanying drawings;

[0037] A self-aligning shock-absorbing wheel side mechanism includes an axle 1. Rolling components 2 are respectively installed at the end parts of the axle 1. A wheel component 3 is arranged outside the rolling components 2. A flexible buffer tensioning component 4 is clamped between the wheel component 3 and the rolling components 2. The flexible buffer tensioning component 4 includes a buffer elastic member 5 with an annular structure. On both sides of the buffer elastic member 5, baffles 6 for support and capable of applying fastening pressure are respectively fixedly installed. The baffles have a certain strength and hardness. The rolling components 2 are bearings, axle bushes, bushings or other components that can support rotation; the wheel component 3 is a rotary support device, including a tire, a wheel rim or a wheel rim and tire assembly. By arranging a flexible buffer tensioning component outside the vehicle wheel side bearing, the vehicle wheel side mechanism has a certain flexibility. When the wheel side component receives an external force impact, the flexible buffer tensioning component deforms, playing a role in buffering and shock absorption for the rigid structure inside the wheel side component, and allowing the wheel side to deflect a certain angle in the axial direction of the wheel axle to avoid greater damage to the important structures inside the wheel side.

[0038] It is mainly manifested in:

[0039] (1) When the flexible buffer tensioning component suddenly receives an external force impact on the wheel side component, the internal buffer rubber ring and flexible cage inside it instantaneously deform, absorbing the impact force, providing shock absorption and buffering for the rigid devices inside the wheel side component, greatly reducing the damage of the wheel side component, and enhancing the shock absorption ability of the vehicle;

[0040] (2) The strength of the deformation of the flexible buffer tensioning component under external force impact can be adjusted by changing the fastening pressure applied in the wheel axle direction. When the fastening force is appropriately increased, the pre-deformation force inside the mechanism increases, making the overall mechanism harder, enhancing the anti-impact performance, and at the same time enhancing the locking force between the wheel axle and the wheel side;

[0041] (3) While the flexible buffer tensioning component inside the wheel side component is deformed by force, it allows the wheel side to swing slightly around the wheel axle, adjusting the angle between the vehicle tire and the ground surface, so that the tire can better contact the ground.

[0042] Further, the buffer elastic member 5 is made of a single plastic or elastic material, such as a rubber O-ring, a rubber pad or other plastic parts. The cross-section of the buffer elastic member 5 is rectangular. After the buffer elastic member 5 is sleeved, baffles 6 are fixed at both ends. The baffles 6 are connected and fixed to the buffer elastic member 5 through fasteners 7. The fasteners 7 are composed of bolts or screws, nuts, bushings or expansion sleeves, and the fastening pressure of the fasteners is adjustable.

[0043] Further, there is a group of buffer elastic members 5 sleeved on the rolling assembly, and the wheel assembly is sleeved on the buffer elastic members. There are two groups of buffer elastic members sleeved on both ends of the rolling assembly, and the wheel assembly 3 is sleeved on the buffer elastic member 5. There are gaps between the baffle 6 and both the wheel assembly 3 and the rolling assembly 2, and the gap value is between 2 - 4 mm.

[0044] As Figure 1-2 shown, it is the structure of a structural rubber ring with a single material for the buffer elastic member, and its buffer elastic member is the structural installation form on the simultaneously installed rolling assembly.

[0045] Figure 3 In [description], the steering knuckle serves as the axle 1. Two groups of bearings are respectively sleeved on two steps of the outer circumference of the steering knuckle, and then the buffer rubber member 5 is sleeved. After the hub 18 is sleeved and installed, the two outer ends of the buffer rubber member 5 are tightly fixed through the pressing cover 19.

[0046] Figure 4 In [description], two bearings are installed at intervals on the rotating shaft of the wheel axle assembly. A buffer rubber member 5 is sleeved outside the bearings and is snapped into the installation hole of the vehicle body 20. Then, the two ends of the buffer rubber member 5 are respectively tightly fixed through the pressing cover.

[0047] As Figure 5-6 shown, the buffer elastic member 5 is composed of a cage 8 and a number of rubber rings 9. The cage 8 is made of a flexible material and has a certain toughness. Inner and outer staggered grooves 10 are arranged in sequence on the inner and outer side surfaces of the cage. The inner grooves contract and the outer grooves expand, so that the rubber rings will not fall off. The rubber rings 9 include an inner rubber ring 9-1 and an outer rubber ring 9-2, and the inner rubber ring 9-1 and the outer rubber ring 9-2 are respectively snapped into the corresponding grooves 10.

[0048] Furthermore, there should be a staggered distance of 2-4 mm between the cross-section centers of the inner rubber ring 9-1 and the outer rubber ring 9-2 to ensure a compression space. The minimum inner diameter dimension of the cage 8 should be greater than the minimum distance of the inner rubber ring 9-1 after being clamped, and the maximum outer diameter dimension of the cage 8 should be less than the maximum distance of the outer rubber ring 9-2 after being clamped. The baffle 6 is sleeved on the wheel assembly 3 on both sides of the buffer elastic member 5. The inner diameter dimension of the baffle 6 is greater than the minimum distance of the inner rubber ring after being clamped, and the outer diameter dimension is greater than the maximum distance of the outer rubber ring after being clamped; the inner baffle 6 is clamped and limited by the mounting step 11 of the wheel axle, and the outer baffle 6 is pressed and positioned by the pressing nut 12 at the end.

[0049] During its specific installation:

[0050] 1) The rolling bearing is placed on the wheel axle and locked with a bearing locking nut;

[0051] 2) The flexible buffer tensioning mechanism is installed on the rolling bearing, and its inner side contacts the outer side of the rolling bearing;

[0052] 3) The wheel side assembly is placed outside the flexible buffer tensioning mechanism, and its inner side contacts the outer side of the flexible buffer tensioning mechanism;

[0053] 4) The flexible buffer tensioning mechanism is placed between the rolling bearing and the wheel side assembly, and is axially locked along the wheel axle by the mechanism pressing nut, and generates a radial tension force to lock the rolling bearing and the wheel side assembly;

[0054] 5) The flexible buffer tensioning mechanism plays a role in buffering and shock absorption. At the same time, it allows a certain angle to be formed between the wheel side assembly and the wheel axle, which can effectively reduce the impact damage suffered by the rolling bearing and the wheel axle in the wheel side.

[0055] Arrange the rubber rings in a certain order and method using a flexible cage, so that the rubber rings can be compressed and deformed as much as possible axially and radially; use the radial force generated by the rubber rings after being compressed in a limited space to support and resist radial pressure or impact force; at the same time, use the radial force of the rubber rings to lock the parts on both the inner and outer sides of the mechanism, such as the rolling bearing and the wheel side mechanism. The structure is simple and easy to implement; it is flexible and changeable, and can be applied to moving mechanisms with different structures and uses.

[0056] Scheme extension:

[0057] Such as Figure 7: The flexible buffer tensioning component adopts a spiral structure. The groove two 13 is inclined. The inner rubber ring two 14 and the outer rubber ring two 15 are wound and fixed along the groove direction of the cage 8, and the inner rubber ring two 14 and the outer rubber ring two 15 are placed in the cage 8 inclined along the inner groove direction of the cage; the inner rubber ring two 14 and the outer rubber ring two 15 have the same specifications; the centers of the cross-sections of the inner rubber ring two 14 and the outer rubber ring two 15 are offset from the center of the cross-section of the inner rubber ring. At the same time, the highest points of the inner rubber ring two 14 and the outer rubber ring two 15 are higher than the highest point on the outside of the cage, and the lowest point of the inner rubber ring two 14 is lower than the lowest point on the inside of the cage; the cage is molded by pressing with a flexible material and has a certain amount of deformation; the length of the spiral structure can be adjusted according to requirements.

[0058] The spiral flexible buffer tensioning component is placed between the shaft and the bushing. When pressure is applied at the right end, the inner rubber ring two 14 and the outer rubber ring two 15 deform to generate a radial force, and rely on the tension to make the shaft and the bushing fit tightly, locking the shaft and the bushing assembly; it has a certain buffering effect in the radial direction, can absorb the impact transmitted from the shaft or the bushing to the system, and play a shock-absorbing role; at the same time, when the spiral flexible buffer tensioning component locks the shaft and the bushing, a certain amount of deflection between the shaft and the bushing is allowed. When installing and placing, the component mainly bears the radial impact force of the shaft or the bushing, similar to a rubber pad.

[0059] Such as Figure 8 : The flexible buffer tensioning component adopts a structure with several spacers 16 arranged at equal intervals, and a rubber ring three 17 is installed between adjacent spacers 16. The structures of all spacers 16 and rubber rings three 17 are connected, and the outer diameter of the spacer 16 is slightly smaller than the outer diameter of the rubber ring three 17, and the inner diameter of the spacer 16 is slightly larger than the inner diameter of the rubber ring three 17. When in use, the spacer 16 and the rubber ring three 17 are sequentially sleeved between the shaft and the bushing. When pressure is applied at the shaft end, it deforms to generate a radial force, and relies on the tension to make the shaft and the bushing fit tightly, locking the shaft and the bushing assembly; it has a certain buffering effect in the radial direction, can absorb the impact transmitted from the shaft or the bushing to the system, and play a shock-absorbing role; at the same time, the dimensional limit of the spacer allows a certain amount of deflection between the shaft and the bushing. When installing and placing, the component mainly bears the radial impact force of the shaft or the bushing, similar to a rubber pad with reinforcing ribs.

[0060] Although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0061] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A self-aligning shock-absorbing wheel hub mechanism, comprising an axle (1), rolling components (2) are respectively installed at the end parts of the axle (1), and a wheel component (3) is arranged outside the rolling components (2), characterized in that: A flexible buffer tensioning component (4) is clamped between the wheel assembly (3) and the rolling component (2). The flexible buffer tensioning component (4) includes a buffer elastic member (5) with an annular structure. On both sides of the buffer elastic member (5), baffles (6) for support and capable of applying fastening pressure are fixedly installed respectively; The cross-section of the buffer elastic member (5) is rectangular. After the buffer elastic member (5) is sleeved, baffles (6) are fixed at both ends. The baffles (6) are connected and fixed to the buffer elastic member (5) through fasteners (7). The fasteners (7) are bolts, screws, nuts, bushings or expansion sleeves, and the fastening pressure of the fasteners is adjustable; The buffer elastic member (5) is composed of a cage (8) and a plurality of rubber rings (9). The cage (8) is made of a flexible material and has a certain toughness. Grooves (10) that are staggered inside and outside are sequentially arranged on the inner and outer side surfaces of the cage. The rubber rings (9) include an inner rubber ring (9-1) and an outer rubber ring (9-2). The inner rubber ring (9-1) and the outer rubber ring (9-2) are respectively clamped into the corresponding grooves (10); The baffles (6) are sleeved on the wheel assembly (3) on both sides of the buffer elastic member (5). The inner baffle (6) is clamped and limited by the installation step (11) of the wheel axle, and the outer baffle (6) is pressed and positioned by the pressing nut (12) at the end; The minimum inner diameter dimension of the cage (8) is larger than the inner diameter of the inner rubber ring (9-1) after being clamped, and the maximum outer diameter dimension of the cage (8) is smaller than the outer diameter of the outer rubber ring (9-2) after being clamped; 2. The self-aligning shock-absorbing wheel side mechanism according to claim 1, wherein: The rolling component (2) is a bearing, a bearing bush, a bushing or other components that can support rotation; the wheel assembly (3) is a rotary support device, including a tire, a wheel rim or a wheel rim and tire assembly.

3. The self-aligning shock-absorbing wheel side mechanism according to claim 1, wherein: The buffer elasticity The member (5) only adopts a single rubber O-ring, rubber pad or other plastic parts with plasticity or elasticity.

4. The self-aligning shock-absorbing wheel side mechanism according to claim 1, characterized in that: The buffer elastic member (5) is a group and is sleeved on the rolling component, and the wheel assembly is sleeved on the buffer elastic member.

5. The self-aligning shock-absorbing wheel side mechanism according to claim 1, characterized in that: The buffer elastic members are two groups and are sleeved on both ends of the rolling component, and the wheel assembly (3) is sleeved on the buffer elastic member (5).

6. The self-aligning shock-absorbing wheel side mechanism according to claim 1, wherein: There are gaps between the baffles (6) and both the wheel assembly (3) and the rolling component (2), and the gap value is between 2 and 4 mm.

7. The self-aligning shock-absorbing wheel side mechanism according to claim 6, characterized in that: An alternating distance for ensuring a compression space is left between the cross-section centers of the inner rubber ring (9-1) and the outer rubber ring (9-2), and the alternating distance is 2 to 4 mm.

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