CN218408279U - Rubber plate spring bushing - Google Patents

Abstract

The utility model discloses a rubber leaf spring bush, including hollow dabber, still include the rubber vulcanization body, the rubber vulcanization body cover is located dabber periphery can rotate relatively, the dabber in the both ends of the rubber vulcanization body are equipped with the fender ring that is used for restricting the rubber vulcanization body axial displacement. Under normal load, the dabber can rotate in the rubber vulcanization body, is similar to the bearing function, realizes the function of twisting reverse, quick response and transmission power, and noiselessness non-maintaining simultaneously. The mandrel and the rubber vulcanized body are of a split structure, the baffle ring is used for limiting the axial movement of the rubber vulcanized body relative to the mandrel, the mandrel is used for bearing the main load (radial load) of the plate spring, and mandrels with different lengths and inner diameters can be pressed into the rubber vulcanized body as long as the outer diameter of the mandrel is kept unchanged, so that the interchangeability of different installation specifications is realized. Meanwhile, if the rubber vulcanized body is aged after long-term use, the mandrel can still be recycled only by replacing the rubber vulcanized body.

Description

Rubber plate spring bushing

Technical Field

The utility model relates to a heavily block leaf spring system technical field, especially relate to a rubber leaf spring bush.

Background

The traditional heavy truck leaf spring bushing is generally of a metal pin copper sleeve structure, lubricating oil and grease (such as grease) are required to be injected at regular time for maintenance, clearance fit is usually adopted, and abnormal sound is generated when a vehicle runs. The rubber plate spring bushing is generally of a vulcanization integrated structure or a press-fitting structure, the vulcanization integrated structure can be maintenance-free, but under normal load of the plate spring, connection and transmission torsion are kept by means of torsion of a rubber body, the rubber hysteresis and force response lag are not beneficial to the operating stability of the whole vehicle, the plate spring bushing needs to bear a large torsion angle (about 60 degrees) to be damaged when the load is large, and if the torsion rigidity of the plate spring bushing is set to be too large, a plate spring eye becomes a maximum stress body and is easy to damage; although the press-fitting structure can solve the problem caused by large load, under normal load, the connection and transmission torsion are still kept by the torsion of the rubber body, which is not beneficial to the operation stability of the whole vehicle.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind and can realize twisting the quick response of quick transmission and power, rubber leaf spring bush that interchangeability is good.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a rubber leaf spring bush, includes hollow dabber, still includes the rubber vulcanization body, the rubber vulcanization body cover is located dabber periphery and relative rotation, the dabber in the both ends of the rubber vulcanization body are equipped with the fender ring that is used for restricting the rubber vulcanization body axial displacement.

As a further improvement of the above technical solution: an oil storage tank is arranged on the inner side of the rubber vulcanized body.

As a further improvement of the above technical solution: the oil storage tank is a spiral groove; or the oil storage tank is an axial groove, and a plurality of axial grooves are uniformly distributed along the circumferential direction; or, the oil storage tank is circumferential groove, circumferential groove is equipped with a plurality ofly and along axial evenly distributed.

As a further improvement of the above technical solution: the rubber vulcanization body comprises an outer sleeve, an inner sleeve, a middle rubber layer positioned between the outer sleeve and the inner sleeve, and an inner rubber layer positioned on the inner side of the inner sleeve, wherein the outer sleeve, the inner sleeve, the middle rubber layer and the inner rubber layer are vulcanized into a whole.

As a further improvement of the technical scheme: the hardness of the inner rubber layer is greater than that of the middle rubber layer.

As a further improvement of the above technical solution: one side of the outer sleeve and one side of the middle rubber layer are of an opening structure.

As a further improvement of the above technical solution: the inner sleeve is positioned between the baffle rings at two ends, and the end part of the outer sleeve is positioned on the periphery of the baffle rings.

As a further improvement of the above technical solution: the mandrel is a steel shaft, and the outer sleeve and the inner sleeve are steel sleeves.

As a further improvement of the above technical solution: the baffle ring is a light composite material ring.

As a further improvement of the technical scheme: the baffle ring is an aluminum alloy ring, a plastic ring or a polyurethane ring.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a rubber leaf spring bush, under normal load, the dabber can rotate in the rubber vulcanization body, is similar to the bearing function, realizes twisting reverse the function, quick response and transmission power, and noiselessness is non-maintaining simultaneously. The mandrel and the rubber vulcanized body are of a split structure, the baffle ring is used for limiting the axial movement of the rubber vulcanized body relative to the mandrel, the mandrel is used for bearing the main load (radial load) of the plate spring, and mandrels with different lengths and inner diameters can be pressed into the rubber vulcanized body as long as the outer diameter of the mandrel is kept unchanged, so that interchangeability of different installation specifications is realized. Meanwhile, if the rubber vulcanized body is aged after long-term use, the mandrel can still be recycled only by replacing the rubber vulcanized body.

Drawings

Fig. 1 is a schematic sectional view of the rubber leaf spring bushing of the present invention.

Fig. 2 is a schematic sectional view of the rubber vulcanized body of the present invention.

Fig. 3 is a schematic structural view of the end face of the rubber vulcanizate of the present invention.

The reference numerals in the figures denote: 1. a mandrel; 2. a rubber vulcanizate; 21. an oil storage tank; 22. a jacket; 23. an inner sleeve; 24. an intermediate rubber layer; 25. an inner rubber layer; 3. and (4) a baffle ring.

Detailed Description

As used in this disclosure and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are inclusive in the plural unless the context clearly dictates otherwise. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Similarly, the word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The invention is described in further detail below with reference to the drawings and specific examples.

Fig. 1 to fig. 3 show an embodiment of the rubber leaf spring bushing of the present invention, the rubber leaf spring bushing of this embodiment, including hollow dabber 1, still include rubber vulcanization body 2, the dabber 1 periphery is located to rubber vulcanization body 2 cover and can rotate relatively, dabber 1 is equipped with the fender ring 3 that is used for restricting 2 axial displacement of rubber vulcanization body in the both ends of rubber vulcanization body 2. During the equipment, can press into rubber vulcanization body 2 with dabber 1 earlier, two keep off ring 3 and press to dabber 1 from both ends respectively again, and two keep off ring 3 after the pressure equipment tightly overlap and constitute whole on dabber 1, and under normal load, this whole can be rotatory relative to rubber vulcanization body 2, keeps off ring 3 and plays the effect of restriction rubber vulcanization body 2 axial displacement.

According to the rubber plate spring bushing, under normal load, the mandrel 1 can rotate in the rubber vulcanized body 2, the function similar to that of a bearing is achieved, the torsion function is achieved, the response is fast, force is transmitted, and meanwhile, the rubber plate spring bushing is noiseless and maintenance-free. The mandrel 1 and the rubber vulcanized body 2 are of a split structure, the baffle ring 3 is responsible for limiting the axial movement of the rubber vulcanized body 2 relative to the mandrel 1, the mandrel 1 is responsible for bearing the main load (radial load) of the plate spring, and the mandrels 1 with different lengths and inner diameters can be pressed into the rubber vulcanized body 2 as long as the outer diameter of the mandrel 1 is kept unchanged, so that interchangeability of different installation specifications is realized. Meanwhile, if the rubber vulcanized body 2 is aged after long-term use, the mandrel 1 can still be recycled for multiple times only by replacing the rubber vulcanized body 2.

Further, in the present embodiment, an oil reservoir 21 is provided inside the rubber vulcanizate 2. Before the mandrel 1 is pressed in, the oil storage tank 21 is coated with solid lubricating grease, after the mandrel 1 is pressed in, an oil film is formed between the mandrel 1 and the rubber vulcanized body 2, so that the movement resistance is favorably reduced, the mandrel 1 can smoothly rotate in the rubber vulcanized body 2, and the structure is simple and effective.

In this embodiment, the oil storage tank 21 is an axial groove, and the axial groove is provided with a plurality of and evenly distributed along the circumferential direction, so that an oil film covering comprehensively and evenly can be formed between the mandrel 1 and the rubber vulcanization body 2, and the mandrel 1 is ensured to rotate smoothly. Of course, in other embodiments, the oil reservoir 21 may be a spiral groove; or, the oil storage tank 21 is a plurality of circumferential grooves (i.e., ring grooves) which are uniformly distributed along the axial direction, and an oil film which covers the entire surface and is uniform can be formed between the mandrel 1 and the rubber vulcanized body 2.

Further, in the present embodiment, the rubber vulcanized body 2 includes an outer sleeve 22, an inner sleeve 23, an intermediate rubber layer 24 between the outer sleeve 22 and the inner sleeve 23, and an inner rubber layer 25 inside the inner sleeve 23, the outer sleeve 22, the inner sleeve 23, the intermediate rubber layer 24, and the inner rubber layer 25 are vulcanized integrally, and the oil reservoir 21 is provided inside the inner rubber layer 25. The rubber vulcanization body 2 of this kind of structure is good wholely, and when dabber 1 was rotatory for inner rubber layer 25, there was not the abnormal sound, and overcoat 22 can provide certain physical protection effect for middle rubber layer 24, inner rubber layer 25 simultaneously.

Further, in the present embodiment, the hardness of the inner rubber layer 25 is greater than that of the intermediate rubber layer 24. The inner rubber layer 25 has higher hardness and good wear resistance, is beneficial to keeping the shape of the oil storage tank 21, and can reduce the resistance of the mandrel 1 in rotation under normal load; the hardness of the middle rubber layer 24 is small, so that the elastic and flexible connection between the outer sleeve 22 and the inner sleeve 23 is realized, and meanwhile, the vibration damping and vibration isolation performance is good.

In a preferred embodiment, the outer cover 22 and the middle rubber layer 24 are open at one side. The rubber plate spring bushing can be pressed into the plate spring eye by adopting larger interference, the inner diameter of the plate spring eye is free from finish machining, the outer sleeve 22 can be formed by curling plates, the precision is not too high, the manufacturing cost is favorably reduced, and the outer sleeve 22 and the middle rubber layer 24 are basically in a closed state after the plate spring eye is pressed.

In a preferred embodiment, the inner sleeve 23 is located between the baffle rings 3 at both ends, that is, the baffle rings 3 axially limit the inner sleeve 23 to realize axial limit of the whole rubber vulcanized body 2, and the end of the outer sleeve 22 is located at the periphery of the baffle rings 3.

In a preferred embodiment, the mandrel 1 is a steel shaft and the outer sleeve 22 and the inner sleeve 23 are steel sleeves. The steel mandrel 1, the outer sleeve 22 and the inner sleeve 23 have high strength, are not easy to deform and have strong bearing capacity. Certainly, in other embodiments, the mandrel 1 can also be made of nylon 66, so that the strength is high, the dead weight is light, and the lightweight of the product is facilitated.

In a preferred embodiment, the retainer ring 3 is a lightweight composite ring, which has a light dead weight and is advantageous for achieving a light weight of the rubber leaf spring bushing. Specifically, the stopper ring 3 may be, for example, an aluminum alloy ring, a plastic ring, or a polyurethane ring, and has a light dead weight and can provide a reliable stopper.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A rubber leaf spring bushing comprising a hollow mandrel (1), characterized in that: still include the rubber vulcanization body (2), the cover of rubber vulcanization body (2) is located dabber (1) periphery and relatively rotatable, dabber (1) in the both ends of rubber vulcanization body (2) are equipped with fender ring (3) that are used for restricting the axial displacement of rubber vulcanization body (2).

2. The rubber leaf spring bushing of claim 1 wherein: an oil storage tank (21) is arranged on the inner side of the rubber vulcanized body (2).

3. The rubber leaf spring bushing of claim 2 wherein: the oil storage tank (21) is a spiral groove; or the oil storage tank (21) is an axial groove, and a plurality of axial grooves are uniformly distributed along the circumferential direction; or, the oil storage tank (21) is a circumferential groove which is provided with a plurality of grooves which are uniformly distributed along the axial direction.

4. The rubber leaf spring bushing according to any one of claims 1 to 3, characterized in that: the rubber vulcanization body (2) comprises an outer sleeve (22), an inner sleeve (23), a middle rubber layer (24) located between the outer sleeve (22) and the inner sleeve (23), and an inner layer rubber layer (25) located on the inner side of the inner sleeve (23), wherein the outer sleeve (22), the inner sleeve (23), the middle rubber layer (24) and the inner layer rubber layer (25) are vulcanized into a whole.

5. The rubber leaf spring bushing of claim 4 wherein: the hardness of the inner rubber layer (25) is greater than that of the intermediate rubber layer (24).

6. The rubber leaf spring bushing of claim 4 wherein: one sides of the outer sleeve (22) and the middle rubber layer (24) are of open structures.

7. The rubber leaf spring bushing of claim 4 wherein: the inner sleeve (23) is positioned between the retaining rings (3) at two ends, and the end part of the outer sleeve (22) is positioned on the periphery of the retaining ring (3).

8. The rubber leaf spring bushing of claim 4 wherein: the core shaft (1) is a steel shaft, and the outer sleeve (22) and the inner sleeve (23) are steel sleeves.

9. The rubber leaf spring bushing according to any one of claims 1 to 3, wherein: the baffle ring (3) is a light composite material ring.

10. The rubber leaf spring bushing of claim 9 wherein: the baffle ring (3) is an aluminum alloy ring, a plastic ring or a polyurethane ring.

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