Bowl-shaped rubber shock absorber

Abstract

The utility model relates to a bowl-shaped rubber shock absorber which comprises a bowl-shaped outer framework and a casting framework embedded in an inner cavity of the bowl-shaped outer framework, the casting framework and the bowl-shaped outer framework are arranged in a spaced mode, and an elastic ring body is arranged between the casting framework and the bowl-shaped outer framework. A metal sleeve is arranged on the outer side of the casting framework, the metal sleeve is attached to the outer wall of the casting framework in the axial direction, and a mounting hole matched with a fastener is formed in the casting framework in the axial direction. Through the change of a rubber structure form, the bowl-shaped outer framework is of a cylindrical structure, so that the rigidity in any direction in the radial direction is the same; the external metal bowl-shaped structure enables the displacement amount of the whole product to be controllable, even if rubber is damaged, the engine cannot fall off from a frame, and therefore system safety is achieved.

Description

Technical Field

[0001] The utility model relates to the field of rubber vibration dampers, in particular to a bowl-shaped rubber vibration damper. Background Art

[0002] The engine shock absorber rubber parts that are widely used in the current construction machinery market have the following structural types: Figure 1 The bottom plate A with an installation air direction is connected to the frame, and the end with a threaded hole is connected to the engine bracket. The advantages of this structural form are simple structure and convenient production, but the disadvantages are that there is no tensile protection structure, it is easy to pull out axially, and the safety is poor.

[0003] After searching, CN204472535U proposed a rubber shock absorber with high shear capacity. Through the cooperation of the spring and the inner rubber column, the shock absorber can not only withstand the force perpendicular to the ground, but also withstand the force in all directions horizontal to the ground. When the equipment is normally installed, the spring bears the force perpendicular to the ground, and mainly absorbs the force perpendicular to the ground under the elastic deformation of the spring. The rubber column inside the equipment absorbs the force in all horizontal directions of the equipment. The outer rubber ring arranged on the periphery of the top cover can not only increase the load-bearing capacity when subjected to shear, but also have a certain mute effect.

[0004] However, this structure does not completely solve the problem that the rubber parts of the engine shock absorber have no tensile protection structure, are easily pulled out axially, and have poor safety.

[0005] Therefore, it is necessary to design rubber shock absorbers that can effectively ensure the system's vibration reduction and isolation, improve installation efficiency, and ensure operational safety, thereby improving product reliability. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the utility model discloses a bowl-shaped rubber shock absorber. By changing the rubber structure form, a bowl-shaped outer frame is adopted as a cylindrical structure, so that the stiffness in any radial direction is the same; the external metal bowl-shaped structure makes the displacement of the entire product controllable, and even if the rubber is damaged, the engine will not fall off the frame, thereby achieving system safety.

[0007] The technical means adopted by the utility model to solve the above problems are:

[0008] Disclosed is a bowl-shaped rubber shock absorber, comprising a bowl-shaped outer frame and a casting frame embedded in the inner cavity of the bowl-shaped outer frame, wherein a gap is arranged between the casting frame and the bowl-shaped outer frame, and an elastic ring body is arranged between the casting frame and the bowl-shaped outer frame; a metal sleeve is arranged on the outer side of the casting frame, and the metal sleeve is axially attached to the outer wall of the casting frame, and a mounting hole cooperating with a fastener is axially arranged on the casting frame.

[0009] The bowl-shaped outer frame of the bowl-shaped rubber vibration damper of the utility model is a cylindrical structure outer contour, which is interference-connected with the frame end, so that it can be fixed to the frame side.

[0010] This bowl-shaped rubber shock absorber is generally installed symmetrically, so that the product has elastic structural protection and limitation in both radial and axial directions, thereby improving system safety.

[0011] Furthermore, the bowl-shaped exoskeleton includes an open end and a closed end, the closed end is provided with a through hole coaxial with the mounting hole, and the open end is surrounded by an annular side wall. The bowl-shaped exoskeleton is placed in the product structure to play a role in strengthening, connecting and supporting, and the preferred material is a metal structure to ensure the strength and service life of the entire shock absorber.

[0012] Furthermore, the metal sleeve is coaxially arranged with the bowl-shaped outer frame, and the metal sleeve and the casting frame are fitted together by interference fit, so that they can be fixed to the frame side; the depth of the bowl-shaped outer frame is smaller than the axial length of the casting frame.

[0013] Furthermore, the metal sleeve includes an end portion 1 close to the open end and an end portion 2 close to the closed end, and the open end and the end portion 1 are radially in the same plane.

[0014] Furthermore, from the open end to the closed end, the inner diameter of the mounting hole is arranged in sections and gradually increases.

[0015] Furthermore, the bowl-shaped outer frame is a cylindrical structure whose outer contour is interference-connected with the frame end, so that it can be fixed to the frame side.

[0016] Furthermore, the elastomeric ring is placed in the middle of the metal sleeve and the bowl-shaped exoskeleton to provide radial stiffness and partial axial stiffness; the elastomeric ring on the closed end side of the bowl-shaped exoskeleton forms a containing cavity with the inner wall of the bowl-shaped exoskeleton.

[0017] Furthermore, a spring pad is provided between the inner cavity of the bowl-shaped outer frame and the two ends of the metal sleeve, and the thickness of the spring pad is smaller than the gap between the two ends and the inner wall of the closed end. The elastomer ring and the elastomer pad are made of rubber or polyurethane, which provide elasticity and damping for the system.

[0018] Furthermore, there are multiple mounting holes evenly distributed on the casting frame.

[0019] Furthermore, avoiding the mounting hole, a weight-reducing groove is provided in the casting frame.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The bowl-shaped rubber shock absorber of the utility model changes the rubber structure. The cylindrical structure makes the stiffness in any radial direction the same. The external metal bowl-shaped structure makes the displacement of the entire product controllable. Even if the rubber is damaged, the engine will not fall off the frame, thereby achieving system safety.

[0022] 2. The bowl-shaped rubber shock absorber of the utility model is easier to assemble, which is beneficial to the weight reduction design of the whole vehicle, and the operating reliability and safety. It has high reliability and easy assembly, and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a front view of the overall structure of the rubber shock absorber in the prior art.

[0024] Figure 2 The overall structural front view of the bowl-shaped rubber vibration damper of the utility model.

[0025] Figure 3 for Figure 2 Left side view of the bowl-shaped rubber shock absorber.

[0026] Figure 4 for Figure 2 Right side view of the bowl-shaped rubber shock absorber.

[0027] Among them, 1-bowl-shaped outer frame, 11-open end, 12-closed end, 13-through hole, 14-annular side wall, 2-casting frame, 3-elastic ring body, 4-metal sleeve, 41-end one, 42-end two, 5-installation hole, 6-accommodating cavity, 7-spring pad body, 8-weight reduction groove. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings. The accompanying drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limiting the present patent; in order to better illustrate the embodiments of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Example 1

[0029] like Figure 2-Figure 4 As shown, the bowl-shaped rubber shock absorber of this embodiment includes a bowl-shaped exoskeleton 1 and a casting skeleton 2 embedded in the inner cavity of the bowl-shaped exoskeleton 1, and a gap is set between the casting skeleton 2 and the bowl-shaped exoskeleton 1; in this embodiment, the bowl-shaped exoskeleton 1 has a cylindrical structure outer contour, which is interference connected with the frame end, so that it can be fixed to the frame side.

[0030] The casting skeleton 2 is an overall cylindrical structure, and an elastic ring body 3 is arranged between the casting skeleton 1 and the bowl-shaped outer skeleton; a metal sleeve 4 is arranged on the outside of the casting skeleton 2, and the metal sleeve 4 is a cylindrical cylinder, and the inner diameter of the cylindrical cylinder is slightly smaller than the outer wall of the casting skeleton 2; the metal sleeve 4 is attached to the outer wall of the casting skeleton 2 along the axial direction, and the metal sleeve 4 and the casting skeleton 2 are interference fit, and the casting skeleton 2 is axially provided with a mounting hole 5 that cooperates with the fastener. The metal sleeve 4 is coaxially arranged with the bowl-shaped outer skeleton 1, and the metal sleeve 4 and the casting skeleton 2 are pressed together by interference fit; the depth of the bowl-shaped outer skeleton 1 is less than the axial length of the casting skeleton 2. That is, part of the casting skeleton 2 is installed in the bowl-shaped skeleton 2. The bowl-shaped outer skeleton 1 in this embodiment includes an open end 11 and a closed end 12, and the closed end 12 is provided with a through hole 13 coaxial with the mounting hole 5, and the open end 11 is surrounded by an annular side wall 14. The metal sleeve 4 includes an end 41 near the open end 11 and an end 42 near the closed end 12, and the open end 11 and the end 41 are radially in the same plane. The end 41 protrudes from the open end 11 of the bowl-shaped outer frame 1. The casting frame 2 is connected to the engine end through a fastener passing through the mounting hole 5, and the material can be cast iron or cast steel. The bowl-shaped outer frame is a cylindrical structure, so that the stiffness is the same in any radial direction; the external metal bowl-shaped structure makes the displacement of the entire product controllable, and even if the rubber is damaged, the engine will not fall off the frame, thereby achieving system safety.

[0031] The mounting holes 5 of this embodiment are of variable diameter. There are multiple mounting holes 5 , 3 in this embodiment, which are evenly distributed on the casting skeleton 2 .

[0032] The inner diameter of the mounting hole 5 is arranged in sections and gradually increases from the open end 11 to the closed end 12. The inner diameter of the through hole 13 is larger than the aperture of the mounting hole 5. This arrangement can make the fastener inserted into the hole tightened with high reliability and not easy to come out.

[0033] The bowl-shaped outer frame 1 has a cylindrical structure outer contour and is interference-connected with the frame end, so that it can be fixed to the frame side.

[0034] The elastomer ring 3 is placed between the metal sleeve 4 and the bowl-shaped exoskeleton 1 to provide radial rigidity and partial axial rigidity; the elastomer ring 3 near the closed end 12 of the bowl-shaped exoskeleton 1 and the inner wall of the bowl-shaped exoskeleton 1 form a receiving cavity 6. The receiving cavity 6 provides a space for the elastomer ring 3 to be compressed and deformed.

[0035] A spring pad 7 is provided between the inner cavity of the bowl-shaped outer frame 1 and the second end 42 of the metal sleeve 4, and the thickness of the spring pad 7 is less than the gap between the second end 42 and the inner wall of the closed end 12. The elastomer pad 7 starts to work when the axial displacement is large (the gap B between the casting frame and the elastomer pad is already 0 at this time), mainly playing the role of axial flexible buffering, alleviating vibration impact, and avoiding working noise. The elastomer ring 3 and the elastomer pad 7 are made of rubber or polyurethane, which provide elasticity and damping for the system.

[0036] In order to achieve a lightweight design of the entire bowl-shaped rubber shock absorber, a weight-reducing groove 8 is provided in the casting frame 2 to avoid the mounting hole 5. The weight-reducing grooves 8 in this embodiment are three structures extending between the mounting holes 5, and converge into an interconnected weight-reducing chamber at the center of the casting frame 2, which can not only meet the stiffness requirements of the entire shock absorber, but also be as lightweight as possible, making the entire shock absorber easy to install.

[0037] During installation, an elastic pad 7 is placed on the inner wall of the closed end 12 of the shaped exoskeleton 1, and a number of holes corresponding to the through holes 13 of the closed end 12 are provided on the elastic pad 7; a metal sleeve 4 is installed on the outer wall of the casting frame 2 with interference fit, and then the casting frame 2 is embedded in the shaped exoskeleton 1, and the installation hole 5 and the through hole 13 are fixed with screws. Then the elastic ring 3 is pressed into the gap between the shaped exoskeleton 1 and the metal sleeve 4. The product assembly process is easier, which is conducive to the weight reduction design of the whole vehicle and increases the operating reliability and safety.

[0038] The above are only embodiments of the utility model, and the utility model is not limited to the fields involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the content of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bowl-shaped rubber shock absorber, characterized in that: The invention comprises a bowl-shaped outer frame (1) and a casting frame (2) embedded in the inner cavity of the bowl-shaped outer frame (1), wherein a gap is provided between the casting frame (2) and the bowl-shaped outer frame (1), and an elastic ring body (3) is provided between the casting frame (2) and the bowl-shaped outer frame (1); a metal sleeve (4) is provided on the outer side of the casting frame (2), and the metal sleeve (4) is axially attached to the outer wall of the casting frame (2); and a mounting hole (5) cooperating with a fastener is axially provided on the casting frame (2).

2. The bowl-shaped rubber vibration damper according to claim 1, characterized in that: The bowl-shaped outer frame (1) comprises an open end (11) and a closed end (12), wherein the closed end (12) is provided with a through hole (13) coaxial with the mounting hole (5), and the open end (11) is surrounded by an annular side wall (14).

3. The bowl-shaped rubber vibration damper according to claim 2, characterized in that: The metal sleeve (4) is coaxially arranged with the bowl-shaped outer frame (1), and the metal sleeve (4) and the casting frame (2) are fitted together by interference fit; the depth of the bowl-shaped outer frame (1) is less than the axial length of the casting frame (2).

4. The bowl-shaped rubber vibration damper according to claim 3, characterized in that: The metal sleeve (4) comprises an end portion (41) close to the open end (11) and an end portion (42) close to the closed end (12), wherein the open end (11) and the end portion (41) are radially located in the same plane.

5. The bowl-shaped rubber vibration damper according to claim 4, characterized in that: From the open end (11) to the closed end (12), the inner diameter of the mounting hole (5) is arranged in sections and gradually increases.

6. The bowl-shaped rubber vibration damper according to claim 5, characterized in that: The bowl-shaped outer frame (1) has a cylindrical structure outer contour which is interference-connected with the frame end, so that it can be fixed to the frame side.

7. The bowl-shaped rubber vibration damper according to claim 6, characterized in that: The elastic ring body (3) is placed in the middle of the metal sleeve (4) and the bowl-shaped outer frame (1) to provide radial rigidity and partial axial rigidity; the elastic ring body (3) on the side close to the closed end (12) of the bowl-shaped outer frame (1) and the inner wall of the bowl-shaped outer frame (1) form a receiving cavity (6).

8. The bowl-shaped rubber vibration damper according to claim 7, characterized in that: A spring washer (7) is provided between the inner cavity of the bowl-shaped outer frame (1) and the second end (42) of the metal sleeve (4), and the thickness of the spring washer (7) is smaller than the gap between the second end (42) and the inner wall of the closed end (12).

9. The bowl-shaped rubber vibration damper according to any one of claims 1 to 8, characterized in that: There are a plurality of mounting holes (5) which are evenly distributed on the casting frame (2).

10. The bowl-shaped rubber vibration damper according to claim 9, characterized in that: A weight-reducing groove (8) is provided in the casting frame (2) to avoid the mounting hole (5).

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