Rubber bushing for suspension swing arm of cab

Abstract

The utility model discloses a rubber bushing for a suspension swing arm of a cab, and relates to the technical field of rubber bushings. The shaft comprises an inner shaft, an outer pipe, a group of arc-shaped sheets and a group of end rubber pads, platform surfaces are arranged on the opposite sides of the circumferential side face of the inner shaft, outer convex parts of arc-shaped structures are arranged on the other opposite sides of the circumferential side face of the inner shaft, an assembly opening is formed in the axis of the inner shaft, and the arc-shaped sheets are arranged between the inner shaft and the outer pipe. Inner rubber bodies are arranged between the inner walls of the arc-shaped pieces and the platform face and between the outer walls of the arc-shaped pieces and the outer pipe. The arc-shaped piece is arranged between the inner shaft and the outer pipe, and the inner rubber body is arranged at the connecting point, so that a cavity can be formed between the inner shaft and the outer pipe, a space is provided for releasing the inner rubber body after the inner rubber body is stressed, and the service life is prolonged; the torsion resistance and the strength between the inner shaft and the arc-shaped pieces and between the arc-shaped pieces and the outer pipe can be improved, and the damping device has the advantages of being light in weight and good in damping effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rubber bush technical field, especially, a kind of rubber bush for cab suspension swing arm. BACKGROUND

[0002] The existing rubber bush is mainly composed of inner shaft and outer tube, filled with rubber body between inner shaft and outer tube, inner shaft is used for the connection of fastener, outer tube is used for the setting of swing arm sleeve, through rubber body, buffering, shock absorption, sound attenuation and torsional resistance are played, however, solid bush cannot provide space for deformation and pressure, rubber body cannot be released quickly after stress, which affects the service life and use effect of rubber body. SUMMARY

[0003] The utility model discloses a kind of rubber bush for cab suspension swing arm, by being provided with arc piece between inner shaft and outer tube and being provided with inner rubber body at connecting point, cavity can be formed between inner shaft and outer tube, provide space for the release of inner rubber body after stress, improve service life, simultaneously, the arrangement of eccentric arc piece can improve the torsional resistance and strength between inner shaft and arc piece, between arc piece and outer tube, and it has the characteristics of light weight, good shock absorption effect.

[0004] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0005] The utility model discloses a kind of rubber bush for cab suspension swing arm, including inner shaft, outer tube, a group of arc piece and a group of end portion rubber pad;

[0006] The opposite side of the inner shaft circumferential surface is provided with platform surface, the other opposite side of the inner shaft circumferential surface is provided with the outer convex portion of arc structure, the inner shaft center is provided with assembly opening;

[0007] The arc piece is arranged between inner shaft and outer tube, and inner rubber body is arranged between the inner wall of the arc piece and the platform surface, and between the outer wall of the arc piece and the outer tube, the arc piece is eccentrically arranged with the assembly opening, and the axial points of the two arc pieces are linearly distributed with the axial point of the assembly opening;

[0008] The outer tube is flush with the arc piece at both ends, the inner rubber body is located inside the outer tube at both ends, and the inner shaft is beyond the outer tube at both ends.

[0009] The axial center of the end portion rubber pad is provided with a through hole matched with the inner shaft gap, the end portion rubber pad is sleeved on the end portion of the inner shaft through the through hole, the end portion rubber pad is fixed with the arc piece and the outer end surface of the outer tube, and the outer end surface of the end portion rubber pad is flush with the outer end surface of the inner shaft.

[0010] The outer diameter of the end portion rubber pad is greater than the outer diameter of the outer tube, and the U-shaped groove is formed between the two end portion rubber pads and the outer surface of the outer tube.

[0011] Further, the swing arm sleeve is sleeved in the groove and matched with the two end rubber pads.

[0012] Further, the support seat is composed of two side plates matched with the outer end surfaces of the two end rubber pads, and a fastening bolt is arranged between the two side plates and penetrates the assembly opening.

[0013] Further, the two outer convex parts of the inner shaft are each provided with a rectangular rubber body, and the two ends of the rectangular rubber body are flush with the two ends of the inner rubber body.

[0014] Further, the inner wall of the outer tube is symmetrically provided with a group of rubber bodies, and the two rubber bodies are respectively opposite to the two rectangular rubber bodies.

[0015] Further, the outer edges of the two ends of the outer tube are each provided with a rounded corner or a chamfered corner.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model discloses a cavity is formed between the inner shaft and the outer tube through the arrangement of the arc-shaped sheet and the inner rubber body at the connecting point, which provides space for the release of the inner rubber body after stress, improves the service life, and through the arrangement of the eccentric arc-shaped sheet, the torsional resistance and strength between the inner shaft and the arc-shaped sheet and between the arc-shaped sheet and the outer tube are improved, the service life is further improved, and the utility model has the characteristics of light weight and good shock absorption effect.

[0018] 2. The utility model discloses a design of the end rubber pad, which is beneficial to the positioning connection between the inner shaft, and only connected with the outer end surface of the arc-shaped sheet and the outer tube, and the smaller contact surface does not affect the buffering movement between the outer tube and the inner shaft, and the same end rubber pad can avoid the contact between the swing arm sleeve and the support seat, avoid the generation of noise and friction, and the distance between the support seat and the swing arm sleeve is constant, so that the end rubber pad is not subjected to greater pressure, thereby further reducing friction and noise.

[0019] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1A kind of rubber bushing for cab suspension swing arm of the utility model removes the end rubber pad after the stereoscopic structure schematic view of the utility model;

[0022] Figure 2 The structure sectional view of the utility model in axial direction after installation;

[0023] Figure 3 The structure sectional view of the utility model in radial direction after installation;

[0024] In the drawing, the component list represented by each sign is as follows:

[0025] 1-inner shaft, 2-outer tube, 3-arc piece, 4-end rubber pad, 5-inner rubber body, 6-swing arm sleeve, 7-bracket seat, 8-fastening bolt, 101-platform surface, 102-outer convex part, 103-fitting mouth, 104-rectangular rubber body, 201-rubber body, 401-through port. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Please refer to Figures 1-3 The utility model discloses a kind of rubber bushings for cab suspension swing arm, including inner shaft 1, outer tube 2, a group of arc piece 3 and a group of end rubber pad 4;

[0028] The opposite side of the circumferential surface of inner shaft 1 is provided with platform surface 101, and the other opposite side of the circumferential surface of inner shaft 1 is provided with arc-shaped outer convex part 102, and fitting mouth 103 is provided at the axis of inner shaft 1.

[0029] Arc piece 3 is arranged between inner shaft 1 and outer tube 2, and inner rubber body 5 is arranged between the inner wall of arc piece 3 and platform surface 101, and between the outer wall of arc piece 3 and outer tube 2, arc piece 3 is arranged eccentrically with fitting mouth 103, and the axis points of the two arc pieces 3 are linearly distributed with the axis point of fitting mouth 103.

[0030] The two ends of outer tube 2 are flush with the two ends of arc piece 3, the two ends of inner rubber body 5 are located inside the two ends of outer tube 2, and the two ends of inner shaft 1 are beyond the two ends of outer tube 2.

[0031] End rubber pad 4 is provided with through port 401 matched with inner shaft 1 at the axis, end rubber pad 4 is sleeved on the end of inner shaft 1 through through port 401, end rubber pad 4 is fixed with the outer end surface of arc piece 3 and outer tube 2, and the outer end surface of end rubber pad 4 is flush with the outer end surface of inner shaft 1.

[0032] The outer diameter of the end gasket 4 is larger than the outer diameter of the outer tube 2, and a U-shaped groove is formed between the two end gaskets 4 and the outer surface of the outer tube 2.

[0033] Among them, such as Figures 2-3 As shown, it also includes a swing arm sleeve 6, which is fitted into the groove and has its two ends respectively attached to the two end pads 4.

[0034] Among them, such as Figures 2-3 As shown, it also includes a bracket 7, which is composed of a set of side plates. The two side plates are respectively attached to the outer end face of the rubber pads 4 at both ends. Fastening bolts 8 are provided between the two side plates and pass through the assembly port 103.

[0035] Among them, such as Figure 1 and Figure 3 As shown, rectangular rubber bodies 104 are provided on both outward protrusions 102 of the inner shaft 1, and the two ends of the rectangular rubber bodies 104 are flush with the two ends of the inner rubber body 5 respectively.

[0036] Among them, such as Figure 1 and Figure 3 As shown, a set of rubber bodies 201 are symmetrically arranged on the inner wall of the outer tube 2, and the two rubber bodies 201 are respectively positioned opposite to the two rectangular rubber bodies 104.

[0037] Among them, such as Figures 1-3 As shown, the outer edges of both ends of the outer tube 2 are provided with rounded corners or chamfers.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rubber bushing for a cab suspension swing arm, characterized by: It comprises an inner shaft (1), an outer tube (2), a group of arc-shaped pieces (3) and a group of end rubber pads (4). The opposite sides of the circumferential surface of the inner shaft (1) are provided with platform surfaces (101), and the other opposite sides of the circumferential surface of the inner shaft (1) are provided with arc-shaped outer convex portions (102). The arc-shaped pieces (3) are arranged between the inner shaft (1) and the outer tube (2), and the inner rubber bodies (5) are arranged between the inner wall of the arc-shaped pieces (3) and the platform surfaces (101) and between the outer wall of the arc-shaped pieces (3) and the outer tube (2). The outer tube (2) is flush with the two ends of the arc-shaped pieces (3), the two ends of the inner rubber bodies (5) are located inside the two ends of the outer tube (2), and the two ends of the inner shaft (1) protrude beyond the two ends of the outer tube (2). The end rubber pads (4) are provided with through openings (401) that gap-fit with the inner shaft (1), the end rubber pads (4) are sleeved on the end portions of the inner shaft (1) through the through openings (401), the end rubber pads (4) are fixed to the outer end surfaces of the arc-shaped pieces (3) and the outer tube (2), and the outer end surfaces of the end rubber pads (4) are flush with the outer end surface of the inner shaft (1). The outer diameter of the end rubber pads (4) is greater than the outer diameter of the outer tube (2), and a U-shaped groove is formed between the outer surfaces of the two end rubber pads (4) and the outer tube (2).

2. The rubber bushing for a swing arm of a cab suspension according to claim 1, characterized by It further comprises a swing arm sleeve (6) that is sleeved in the groove and has two ends respectively adhering to the two end rubber pads (4).

3. The rubber bushing for a swing arm of a cab suspension according to claim 1, characterized by It further comprises a bracket seat (7) composed of a group of side plates, the two side plates are respectively arranged on the outer end surfaces of the two end rubber pads (4), a fastening bolt (8) is arranged between the two side plates, and the fastening bolt (8) penetrates the assembly opening (103).

4. The rubber bushing for a swing arm of a cab suspension according to claim 1, characterized by The two outer convex portions (102) of the inner shaft (1) are respectively provided with rectangular rubber bodies (104) that are flush with the two ends of the inner rubber bodies (5).

5. The rubber bushing for a swing arm of a cab suspension according to claim 4, characterized by The inner wall of the outer tube (2) is symmetrically provided with a group of rubber bodies (201), and the two rubber bodies (201) are respectively located opposite to the two rectangular rubber bodies (104).

6. The rubber bushing for a swing arm of a cab suspension according to claim 1, wherein The outer edges of the two ends of the outer tube (2) are respectively provided with round corners or chamfers.

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