Metal rubber shock absorber compression installation method and metal rubber shock absorber limiting installation structure

Abstract

The invention discloses a compression mounting method for a metal rubber shock absorber, which comprises the following steps of: applying an acting force F to a first base or a second base during pre-compression, so that the distance between the first base and the second base is reduced by a pre-compression amount delta H, and a first rubber body and a second rubber body are both in a compressed state; and then the distance between the first base and the second base is locked to keep the pre-compression amount delta H unchanged, and the pre-compression amount delta H enables the first rubber body and the second rubber body not to break away from each other when the first rubber body and the second rubber body are loaded. According to the compression installation method for the metal rubber shock absorber, a certain amount of pre-compression can be provided for the symmetrically-arranged shock absorption assemblies when the shock absorber is installed, the shock absorption assemblies are made to be in the initial state and the compression state, the shock absorption assemblies on the two sides are still in the compression state when loads are applied, and the situation that the assemblies are disengaged due to the too large loads is avoided. Therefore, the load tolerance of the shock absorber is improved, and the service life of the shock absorber is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of vibration reduction of transmission power systems, and specifically to a compression installation method for a metal rubber shock absorber and a metal rubber shock absorber. Background Art

[0002] In some power systems, the engine, as a power source, generates vibrations in all directions. In order to suppress such vibrations and improve comfort and system stability, it is necessary to use vibration reduction units or shock absorbers to flexibly support the engine. Generally speaking, the shock absorber of the engine mainly consists of a rubber vibration isolation pad and metal installation components such as a skeleton or a support. The rubber vibration isolation pad mainly plays a role in suppressing vibrations, and the metal installation components such as the skeleton or the support are used to connect the engine or the engine installation frame to fix the entire shock absorber and transmit the engine vibrations. When the shock absorber bears a large load of the engine, the elastic rubber body of the shock absorber will undergo compression, shear or tensile deformation due to the load. Some components may become detached under large loads, and the detached components may not be able to return to their original state or may cause unpredictable structural failures. Therefore, product detachment between product components should be avoided as much as possible in the application conditions.

[0003] Through retrieval, there are relevant technical literatures on shock absorbers or shock absorbers in the prior art. For example, the utility model authorization announcement document with the publication number "CN221097336U" and the name "An engine front mount". It relates to a shock absorber, especially an engine front mount, including: an upper connecting plate; a lower connecting plate, provided with a limiting hole and oppositely arranged with the upper connecting plate; a shock-absorbing rubber, provided with a shock-absorbing hole, and both ends of the shock-absorbing rubber are respectively connected to the upper connecting plate and the lower connecting plate, and the shock-absorbing hole communicates with the limiting hole; a limiting column, arranged on the upper connecting plate and movably inserted into the shock-absorbing hole and the limiting hole; and a limiting plate, arranged on the limiting column and located below the lower connecting plate, and the limiting plate is larger than the limiting hole. This comparative document uses the limiting column and the limiting plate to play a certain limiting and buffering role when the rubber rebounds, but does not consider the problem of product detachment of the rubber body components when loaded.

[0004] For example, the invention patent publication document with the publication number "CN101852266A" and the name "Metal Rubber Shock Absorber Soft Pad Assembly". It relates to a metal rubber shock absorber soft pad assembly for mounting and connecting an engine to a vehicle body, which is composed of an upper mounting plate, a lower mounting plate, a rubber cushion block, an upper limit plate and a lower limit plate. The rubber cushion block is located between the upper mounting plate and the lower mounting plate and is integrated with the upper and lower mounting plates. The upper limit plate is vertically fixed to the left and right sides of the upper mounting plate, and the lower limit plate is vertically fixed to the front and back sides of the lower mounting plate. A stud is vertically fixed on the upper mounting plate, and a mounting hole is provided on the lower mounting plate. This comparative document uses the upper limit plate and the lower limit plate in cooperation with a buffer block to achieve limiting, which can make the rubber parts deform in a limited space. However, whether the rubber body can withstand tensile deformation is not considered, and the structure of this shock absorber is simple and cannot meet the vibration isolation requirements in different directions during engine shock absorption. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for compressing and installing a metal rubber shock absorber. The metal rubber shock absorber includes a first shock absorption component, a second shock absorption component and a support. The support has a vertically extending mounting plate, and the first shock absorption component and the second shock absorption component are symmetrically installed on both sides of the mounting plate. The first shock absorption component has a first base, and first rubber bodies are symmetrically vulcanized and connected to the first base. The second shock absorption component has a second base, and second rubber bodies are symmetrically vulcanized and connected to the second base. When pre-compressing, a force F is first applied to the first base or the second base to reduce the distance between the first base and the second base by a pre-compression amount ΔH so that both the first rubber body and the second rubber body are in a compressed state, and then the distance between the first base and the second base is locked to maintain the pre-compression amount ΔH unchanged. The pre-compression amount ΔH enables the first rubber body and the second rubber body not to be separated between components due to excessive load when loaded.

[0006] Furthermore, a hollow sleeve for limiting is arranged between the first base and the second base. The bottom end of the hollow sleeve abuts against the first base, and the distance between the top end of the hollow sleeve and the second base is the pre-compression amount ΔH. When applying the force F, the second base and the top end of the hollow sleeve are made to abut, and thus the pre-compression amount ΔH is completed.

[0007] Furthermore, a fixing screw is provided and passed through the second base and extended from within the hollow sleeve. The end of the fixing screw penetrates the mounting surface, and the force F is applied by rotating the fixing screw to reduce the distance between the first base and the second base and finally lock the pre-compression amount ΔH.

[0008] Furthermore, the direction of application of the force F is along the axial direction of the hollow sleeve, and the axial guidance is provided during the application process.

[0009] A limit installation structure for a metal rubber shock absorber is also proposed, which includes a first shock absorption component and a second shock absorption component. The support has a vertically extending mounting plate, and the first shock absorption component and the second shock absorption component are symmetrically installed on both sides of the mounting plate; the first shock absorption component has a first base, and first rubber bodies are symmetrically vulcanized and connected to the first base. The second shock absorption component has a second base, and second rubber bodies are symmetrically vulcanized and connected to the second base. A hollow sleeve is connected between the first base and the second base. The hollow sleeve has a limit step, and the limit step abuts against the upper surface of the first base. There is a pre-compression amount ΔH between the top end of the hollow sleeve and the second base. A fixing screw passes through the hollow sleeve and can be locked on the mounting surface.

[0010] Further, a first through hole is opened in the center of the mounting plate, and the inner wall of the first through hole can be in contact with the outer wall of the hollow sleeve.

[0011] Further, a second through hole and a third through hole are respectively opened in the centers of the first shock absorption component and the second shock absorption component. The outer side wall of the bottom end of the hollow sleeve abuts against the inner side wall of the second through hole. An axial limiting member is connected to the inner surface of the second base, and the axial limiting member can be in contact with the side wall of the hollow sleeve.

[0012] Further, the axial limiting member is a circular convex platform connected to the inner surface of the second base.

[0013] Further, a first groove is opened at the adjacent position of the circular convex platform and the inner surface of the second base.

[0014] Further, the middle section of the hollow sleeve has an annular convex platform, and the annular convex platform can be in contact with the inner wall of the first through hole.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects: The compression installation method of the metal rubber shock absorber proposed by the present invention can provide a certain pre-compression amount for the symmetrically arranged shock absorption components during the installation of the shock absorber, so that it is in the initial and compressed states. When a load is applied, the shock absorption components on both sides are still in the compressed state, and the components will not be separated due to excessive load. Thereby, the load tolerance of the shock absorber is improved, and its working life is extended. Description of the Drawings

[0016] Figure 1 : Schematic diagram of the principle of the compression installation method of the metal rubber shock absorber; Figure 2 : Schematic diagram of the overall structure of the metal rubber shock absorber; Figure 3 : Schematic diagram of the split structure of the support and the shock absorption component; Figure 4 : Axial sectional view of the metal rubber shock absorber along the hollow sleeve. Detailed Embodiment

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.

[0018] A method for compressively installing a metal rubber shock absorber. The metal rubber shock absorber includes a first shock absorption component 1, a second shock absorption component 2 and a support 3. The support 3 has a vertically extending mounting plate 31. The first shock absorption component 1 and the second shock absorption component 2 are symmetrically installed on both sides of the mounting plate 31. The first shock absorption component 1 has a first base 13, and first rubber bodies 14 are symmetrically vulcanized and connected to the first base 13. The second shock absorption component 2 has a second base 23, and second rubber bodies 24 are symmetrically vulcanized and connected to the second base 23. When pre-compressing, a force F is first applied to the first base 13 or the second base 23 to reduce the distance between the first base 13 and the second base 23 by a pre-compression amount ΔH, so that both the first rubber bodies 14 and the second rubber bodies 24 are in a compressed state. Then, the distance between the first base 13 and the second base 23 is locked to maintain the pre-compression amount ΔH unchanged. The pre-compression amount ΔH ensures that the first rubber bodies 14 and the second rubber bodies 24 will not be separated between the components due to excessive loads when loaded.

[0019] Specifically, it can be seen from Figure 1 that the first shock absorption component 1 and the second shock absorption component 2 are symmetrically arranged relative to the mounting plate 31. When the shock absorber receives the vibration load from the engine, the mounting plate 31 will transfer the vibration load to the first rubber bodies 14 and the second rubber bodies 24, and buffer the vibration load through the flexible support of the rubber bodies. If the first rubber bodies 14 and the second rubber bodies 24 are in a free state in the initial state, if one rubber body is compressed and deformed, the other will be separated between the components. In the method provided in this embodiment, when the shock absorber is installed on the mounting surface S, by continuously applying a force F to the first base 13 or the second base 23, the distance between the first base 13 and the second base 23 is shortened by the pre-compression amount ΔH. That is, a pre-compression amount ΔH will be generated in the direction of the force F on the first rubber bodies 14 and the second rubber bodies 24. When this pre-compression amount ΔH is locked, the first rubber bodies 14 and the second rubber bodies 24 are in a compressed state in the initial state. Even if they are deformed under load, both rubber bodies are compressed and deformed. It can be understood that the pre-compression amount ΔH should not be less than the deformation amount of the first rubber bodies 14 and the second rubber bodies 24 under the maximum load.

[0020] In a more preferred embodiment, a hollow sleeve 32 for limiting is provided between the first base 13 and the second base 23. The bottom end of the hollow sleeve 32 abuts against the first base 13, and the distance between the top end of the hollow sleeve 32 and the second base 23 is the pre-compression amount ΔH. When a force F is applied, the second base 23 and the top end of the hollow sleeve 32 are made to abut, thereby completing the pre-compression amount ΔH. The control of the pre-compression amount ΔH is very crucial. In this embodiment, the top end of the hollow sleeve 32 can play an accurate limiting role. When the force F is applied until the second base 23 and the top end of the hollow sleeve 32 come into contact, the pre-compression of the first rubber body 14 and the second rubber body 24 is completed at this time.

[0021] In a more preferred embodiment, a fixing screw 312 is provided and made to penetrate through the second base 23 and extend from within the hollow sleeve 32. The end of the fixing screw 312 penetrates through the mounting surface S. By rotating the fixing screw 312, a force F is applied to reduce the distance between the first base 13 and the second base 23 and finally lock the pre-compression amount ΔH. When implementing the pre-compression, the fixing screw 312 can be rotated. Threads can be provided on the mounting surface S or nuts can be mounted oppositely. When the fixing screw 312 is rotated until the second base 23 and the top end of the hollow sleeve 32 come into contact, the pre-compression process is completed.

[0022] In a more preferred embodiment, the direction of application of the force F is along the axis of the hollow sleeve 32, and guidance in the axial direction is provided during the application process. The application of the force F is preferably along the axis of the hollow sleeve 32. In the foregoing embodiment, applying the force F through the fixing screw 312 ensures the accuracy of this direction. During the axial force F process, in order to ensure the accuracy of the force application direction, axial guidance is necessary.

[0023] Another embodiment of the present invention will provide a limiting installation structure for a metal rubber shock absorber, including a first shock absorption assembly 1 and a second shock absorption assembly 2. The support 3 has a vertically extending mounting plate 31. The first shock absorption assembly 1 and the second shock absorption assembly 2 are symmetrically mounted on both sides of the mounting plate 31; the first shock absorption assembly 1 has a first base 13, and first rubber bodies 14 are symmetrically vulcanized and connected to the first base 13. The second shock absorption assembly 2 has a second base 23, and second rubber bodies 24 are symmetrically vulcanized and connected to the second base 23. A hollow sleeve 32 is connected between the first base 13 and the second base 23. The hollow sleeve 32 has a limiting step 321, and the limiting step 321 abuts against the upper surface of the first base 13. The distance between the top end of the hollow sleeve 32 and the second base 23 has a pre-compression amount ΔH. The fixing screw 312 penetrates through the hollow sleeve 32 and can be locked to the mounting surface S.

[0024] Specifically, reference can be made to Figures 2 to 4。The top end of the hollow sleeve 32 can play an accurate limiting role. When a force F is applied until the second base 23 contacts the top end of the hollow sleeve 32, the pre-compression of the first rubber body 14 and the second rubber body 24 is completed at this time. The limiting step 321 can determine the position of the hollow sleeve 32 between the first base 13 and the second base 23.

[0025] The first vibration damping assembly 1 and the second vibration damping assembly 2 have similar structures. The first vibration damping assembly 1 has a first base 13, and first rubber bodies 14 are symmetrically vulcanized and connected to the first base 13. A second through hole 11 is opened on the first base 13, and first cover plates 15 are respectively vulcanized and connected to the upper surfaces of the first rubber bodies 14. The second vibration damping assembly 2 has a second base 23, and second rubber bodies 24 are symmetrically vulcanized and connected to the second base 23. A third through hole 21 is opened on the second base 23, and second cover plates 25 are respectively vulcanized and connected to the upper surfaces of the second rubber bodies 24. The support 3 is a T-shaped bracket, and its bottom surface is the installation surface with the engine. The mounting plate 31 is perpendicular to this bottom surface, and the first cover plate 15 and the second cover plate 25 are respectively symmetrically connected to both sides of the mounting plate 31. The hollow sleeve 32 penetrates into the first through hole 311, passes through the second through hole 11 and then extends out from the first base 13. The hollow sleeve 32 has a limiting step 321 that cooperates with the inner side of the second through hole 11 for limiting. The fixing screw 312 penetrates into the top surface of the second base 23 and extends out from one end of the hollow sleeve 32, and the extended end of the fixing screw 312 can fix the entire metal rubber vibration damper on the engine mounting frame. When the metal rubber vibration damper is connected to the engine and the engine mounting frame, the first vibration damping assembly 1 and the second vibration damping assembly 2 bear the vibrations of the engine in all directions to provide flexible support for the engine.

[0026] The middle section, upper and lower ends of the hollow sleeve 32 are firmly limited in this embodiment. For the middle section of the hollow sleeve 32, after the gap between its side wall and the side wall of the first through hole 311 becomes zero when receiving the aforementioned load, a limit will be formed between the middle section of the hollow sleeve 32 and the side wall of the first through hole 311. For the lower end of the hollow sleeve 32, a limit is formed by the side wall of the hollow sleeve 32 abutting against the side wall of the second through hole 11. Correspondingly, for the upper end of the hollow sleeve 32, its side wall will contact the axial extension part of the axial limiting member to form a limit. Thus, the upper, middle and lower sections of the hollow sleeve 32 all have corresponding limits, which can prevent the load applied to the first vibration damping assembly 1 and the second vibration damping assembly 2 along the radial direction of the hollow sleeve 32 from being too large, resulting in the rubber body bearing too large a shear force. And when the middle section limit occurs, the upper and lower ends of the hollow sleeve 32 are limited, and the hollow sleeve 32 will not tilt or deflect at all.

[0027] An axial limiting member is connected to the inner surface of the second base 23. One implementation of the axial limiting member is a circular boss 22 extending from the inner surface of the second base 23 towards the hollow sleeve 32. The circular boss 22 contacts and limits the inner wall of the hollow sleeve 32. Since one end of the axial limiting member has a definite position relative to the second base 23, after the circular boss 22 contacts the inner wall of the hollow sleeve 32, in cooperation with the other end of the hollow sleeve 32 abutting against the side wall of the second through hole 11, two-end constraints can be formed, enabling the hollow sleeve 32 to be subjected to balanced forces.

[0028] In a more preferred implementation, a first groove 221 is formed at the adjacent position between the circular boss 22 and the inner surface of the second damping assembly 2. The design of the first groove 221 enables the side wall of the hollow sleeve 32 to closely fit with the circular boss 22, preventing loose fitting caused by protrusions or chamfers resulting from machining accuracy issues between the circular boss 22 and the second base 23.

[0029] In a more preferred implementation, the middle section of the hollow sleeve 32 has an annular boss 322, which can contact the inner wall of the first through hole 311. The annular boss 322 can adjust the limiting distance of the middle section of the hollow sleeve 32, and thus non-linearly adjust the stiffness of the entire shock absorber.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compression installation method for a metal rubber shock absorber, characterized in that: The metal rubber vibration damper comprises a first vibration damping component (1), a second vibration damping component (2) and a support (3), wherein the support (3) has a vertically extending mounting plate (31), and the first vibration damping component (1) and the second vibration damping component (2) are symmetrically mounted on both sides of the mounting plate (31); The first vibration-damping component (1) comprises a first base (13), on which a first rubber body (14) is symmetrically vulcanized and connected, and the second vibration-damping component (2) comprises a second base (23), on which a second rubber body (24) is symmetrically vulcanized and connected; during pre-compression, a force F is first applied to the first base (13) or the second base (23), so that the distance between the first base (13) and the second base (23) is reduced by a pre-compression amount ΔH so that the first rubber body (14) and the second rubber body (24) are both in a compressed state, and then the distance between the first base (13) and the second base (23) is locked to maintain the pre-compression amount ΔH unchanged, and the pre-compression amount ΔH prevents the first rubber body (14) and the second rubber body (24) from being separated from each other when loaded.

2. The compression installation method of the metal rubber shock absorber according to claim 1, characterized in that: A hollow sleeve (32) for limiting position is provided between the first base (13) and the second base (23); the bottom end of the hollow sleeve (32) contacts the first base (13); the distance between the top end of the hollow sleeve (32) and the second base (23) is a pre-compression amount ΔH; when a force F is applied, the second base (23) and the top end of the hollow sleeve (32) contact each other, thus completing the pre-compression amount ΔH.

3. The method for compressing and installing a metal rubber shock absorber according to claim 2, characterized in that: A fixing screw (312) is provided and passes through the second base (23) and extends from the hollow sleeve (32). The end of the fixing screw (312) passes through the mounting surface (S). By rotating the fixing screw (312), a force F is applied to reduce the distance between the first base (13) and the second base (23) and finally lock the pre-compression amount ΔH.

4. The method for compressing and installing a metal rubber shock absorber according to claim 2, characterized in that: The direction in which the force F is applied is along the axial direction of the hollow sleeve (32), and axial guidance is provided during the application process.

5. A metal rubber shock absorber limit installation structure, characterized in that: It comprises a first vibration damping assembly (1) and a second vibration damping assembly (2), the support (3) having a vertically extending mounting plate (31), the first vibration damping assembly (1) and the second vibration damping assembly (2) being symmetrically mounted on both sides of the mounting plate (31); The first vibration damping component (1) comprises a first base (13), on which a first rubber body (14) is symmetrically vulcanized and connected; the second vibration damping component (2) comprises a second base (23), on which a second rubber body (24) is symmetrically vulcanized and connected; a hollow sleeve (32) is connected between the first base (13) and the second base (23); the hollow sleeve (32) comprises a limiting step (321), the limiting step (321) abuts against the upper surface of the first base (13); the top end of the hollow sleeve (32) has a pre-compression amount ΔH from the second base (23); and a fixing screw (312) passes through the hollow sleeve (32) and can be locked on a mounting surface (S).

6. The metal rubber shock absorber position limiting installation structure according to claim 5, characterized in that: A first through hole (311) is provided in the center of the mounting plate (31), and an inner wall of the first through hole (311) can contact an outer wall of the hollow sleeve (32).

7. The metal rubber shock absorber position limiting installation structure according to claim 6, characterized in that: A second through hole (11) and a third through hole (21) are respectively provided in the center of the first vibration damping assembly (1) and the second vibration damping assembly (2); the outer wall of the bottom end of the hollow sleeve (32) abuts against the inner wall of the second through hole (11); an axial limiting component is connected to the inner surface of the second base (23); the axial limiting component can contact the side wall of the hollow sleeve (32).

8. The metal rubber shock absorber position limiting installation structure according to claim 7, characterized in that: The axial limiting member is a circular boss (22) connected to the inner surface of the second base (23).

9. The metal rubber shock absorber position limiting installation structure according to claim 8, characterized in that: A first groove (221) is provided at the junction of the circular boss (22) and the inner surface of the second base (23).

10. The metal rubber shock absorber position limiting installation structure according to claim 6, characterized in that: The middle section of the hollow sleeve (32) has an annular boss (322), and the annular boss (322) can contact the inner wall of the first through hole (311).

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