A composite metal damper with longitudinal and transverse decoupling

Abstract

The application provides a longitudinal and horizontal decoupled composite metal damper, which comprises a shell fixed on a bottom plate, an external vibration excitation supported on an upper end of a core block in an inner cavity of the shell, the core block being slidably arranged at a damping plate at a top of an upper spring seat, a plurality of spiral springs arranged in the inner cavity of the shell between a bottom surface of the upper spring seat and the bottom plate and serving as vertical main elastic supporting elements, four metal rubber elements arranged in the inner cavity of the shell, the four metal rubber elements being a high-rigidity horizontal limiting metal rubber element serving as an impact soft limiting element, a medium-rigidity metal rubber element serving as a horizontal elastic supporting element and a vertical auxiliary elastic supporting element, a high-rigidity vertical limiting metal rubber element serving as an impact soft limiting element, and a low-rigidity vertical damping metal rubber element serving as a vertical damping element; and the damper has a damping composite structure with vertical damping as the main damping and horizontal damping as the auxiliary damping, so that the damping effect is met and more reliable protection is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vibration reduction technology, and in particular to a longitudinal and transverse decoupling composite metal vibration reducer. BACKGROUND

[0002] At present, in the fields of aerospace, medical treatment, precision instruments and the like, vibration reduction control is always one of the focuses of research in safety problems. The occurrence of vibration has a great negative effect on the normal operation of related equipment, reduces the service life and operation accuracy of the equipment, and even causes irreversible strength damage.

[0003] The vibration reducer is widely used in various aircraft, special vehicles and ships as the most commonly used vibration reduction and impact buffering device due to its simple structure and relatively low price. The commonly used buffering elements at present mainly include metal springs, rubber, steel wire ropes and metal rubber.

[0004] Metal rubber is a new type of elastic damping material. Under the action of dynamic load, friction, sliding and extrusion occur between the spiral turns of the metal wire, a large amount of vibration energy can be dissipated, it has high elasticity, large damping characteristics and excellent physical and mechanical properties of metal, is not afraid of radiation environment, is resistant to high / low temperature, corrosion, and is resistant to fatigue aging and has long service life.

[0005] As a new type of buffering element in the field of cutting-edge technology, metal rubber can achieve the purpose of vibration reduction and buffering while maintaining the stability of the vibration reduction system. The use of metal rubber greatly improves the service life of the vibration reduction material and becomes the main force of future vibration reduction materials. SUMMARY

[0006] The present application proposes a longitudinal and transverse decoupling composite metal vibration reducer. In view of the multi-directional vibration isolation design requirement of equipment in extreme environment, the principle of vertical vibration reduction as the main and horizontal vibration reduction as the auxiliary is introduced, the idea of longitudinal and transverse decoupling is introduced, and the whole is more reliably protected while meeting the vibration reduction effect.

[0007] The present application adopts the following technical solutions.

[0008] A longitudinal and transverse decoupling composite metal vibration reducer, the vibration reducer comprises a shell (2) fixed on a bottom plate (4), the upper end of a core block (1) in the shell cavity bears external vibration excitation, the core block is slidably arranged at the damping plate at the top of the upper spring seat (3), a plurality of spiral springs (10) are arranged in the shell cavity between the bottom surface of the upper spring seat and the bottom plate as vertical main elastic supporting elements;

[0009] The shell inner cavity is also provided with four metal rubber elements with different densities and different shapes, which are high-rigidity horizontal limiting metal rubber element (5) used as impact soft limiting element, medium-rigidity metal rubber element (6) used as horizontal elastic supporting element and vertical auxiliary elastic supporting element, high-rigidity vertical limiting metal rubber element (8) used as impact soft limiting element, and low-rigidity vertical damping metal rubber element (7) used as vertical damping element.

[0010] The core block upper end protrudes from the shell upper port (2a) at the top of the shell, and when the damper is working, the core block receives external vibration excitation and transmits the external vibration excitation into the damper interior to perform vibration absorption and energy absorption,

[0011] Specifically, when vertical vibration excitation is transmitted, it is transmitted to the damping plate through the core block and then to the upper spring seat, at this time, the coil spring serves as a vertical main elastic supporting element, the medium-rigidity metal rubber serves as a vertical auxiliary elastic supporting element, and the low-rigidity vertical damping metal rubber serves as a vertical damping element to achieve the purpose of vertical vibration reduction and isolation; the high-rigidity vertical limiting metal rubber serves as an impact soft limiting element to achieve vertical impact soft limiting and avoid spring coil.

[0012] When horizontal vibration excitation is transmitted, the vibration excitation is transmitted to the medium-rigidity metal rubber through the core block, the medium-rigidity metal rubber provides horizontal elastic support and also plays a partial damping role to achieve the purpose of horizontal vibration reduction and isolation, and the horizontal vibration excitation can be transmitted to the horizontal limiting metal rubber through the inner wall of the shell, and the horizontal limiting metal rubber serves as an impact soft limiting element to achieve horizontal impact soft limiting; in this process, the contact interface friction between the core block and the damping plate when the core block slides can also provide partial horizontal damping force.

[0013] When the damper is working, the horizontal limiting metal rubber element performs horizontal impact soft limiting on the core block upper end.

[0014] When the damper is working, the mechanical characteristics in the vertical and horizontal directions present the nonlinear effect of metal rubber and the linear effect of spring, that is, when the load force is small, the mechanical characteristics of the damper mainly present linear damping effect; when the load force is large, the mechanical characteristics of the damper mainly present nonlinear damping effect.

[0015] The metal rubber element is a combination of metal wire and rubber, and the performance parameters of the metal rubber element are adjusted by adjusting the hardness of the metal wire and adjusting the density and thickness of the metal rubber element.

[0016] The horizontal limiting metal rubber element and the medium-rigidity metal rubber element are annular metal rubbers, have the same outer diameter, different thicknesses, and the inner diameter of the horizontal limiting metal rubber element is larger than that of the medium-rigidity metal rubber element; the vertical damping metal rubber element (7) is a cylindrical metal rubber; and the vertical limiting metal rubber element (8) is a special-shaped metal rubber;

[0017] The medium-rigidity metal rubber element (6) is an annular body sleeved on the central axis of the core block, and the lower end surface of the medium-rigidity metal rubber element is in close contact with the core block.

[0018] The horizontal limiting metal rubber element (5) is an annular body sleeved on the central axis of the core block, is located at the upper end of the medium-rigidity metal rubber element, and has a lower end surface in close contact with the upper end surface of the medium-rigidity metal rubber element. The medium-rigidity metal rubber element is attached to the central axis of the core block, and the inner side wall of the horizontal limiting metal rubber element is spaced from the central axis of the core block. The horizontal limiting metal rubber element and the medium-rigidity metal rubber element are attached to the inner wall of the shell.

[0019] The damping plate is a high-force brass plate (9) in close contact with the lower end of the core block.

[0020] The high-force brass plate is connected to the upper spring seat through fasteners. The lower end of the upper spring seat has four upper spring grooves (3b) for positioning the upper end of the coil spring.

[0021] The bottom plate has four triangular grooves (4b) and four lower spring grooves (4a) uniformly distributed thereon in the circumferential direction. The triangular grooves are used for installing the vertical limiting metal rubber element, and the lower spring grooves are used for positioning the lower end of the coil spring. The bottom plate is connected to the shell through fasteners.

[0022] The upper end groove of the upper spring seat is bolted through the upper spring seat inner threaded hole (3a) and the high-force brass plate connecting hole (9a) of the high-force brass plate.

[0023] The shock absorber includes the following steps when assembled:

[0024] In step S1, four vertical limiting metal rubbers are first installed in the corresponding triangular grooves, four coil springs are then installed in the corresponding lower spring grooves, the vertical damping metal rubber is then installed in the inner hole of the coil spring, the high-force brass plate is then installed in the upper end groove of the upper spring seat, the upper spring seat is then placed on the upper ends of the four coil springs so that the upper ends of the coil springs are positioned in the upper spring grooves, and the core block is then placed on the high-force brass plate.

[0025] In step S2, the horizontal limiting metal rubber element and the medium-rigidity metal rubber element are sleeved on the core block.

[0026] Step S3, combine the shell with the bottom plate after the above installation step, complete the assembly of the shock absorber.

[0027] Compared with the prior art, the new shock absorber has the advantages that: compared with the traditional metal rubber shock absorber, the new shock absorber adopts a structure scheme of longitudinal and transverse decoupling, can realize independent design of the vertical and horizontal mechanical properties of the shock absorber to a certain extent, and has higher flexibility. The new shock absorber combines the nonlinear action of metal rubber and the linear action of a spring, and mainly presents linear damping action when the load force is small, and presents nonlinear damping action when the load force is large, so that the damping effect is met, and the whole is also more reliably protected. In addition, the density and thickness of the metal rubber are not fixed standards, and different hardness of metal wires can be flexibly selected, and the performance of the metal rubber obtained is different, so that the adaptability of the new shock absorber applied to different occasions is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] The application will be further described in detail below with reference to the drawings and specific embodiments:

[0029] ATTACHED Figure 1 is a front isometric view of the application;

[0030] ATTACHED Figure 2 is a three-dimensional schematic view of the shock absorber of the application after half of the shell is cut off;

[0031] ATTACHED Figure 3 is a cut schematic view of the application;

[0032] ATTACHED Figure 4 is a front isometric view of the upper spring seat in the application;

[0033] ATTACHED Figure 5 is a front isometric view of the bottom plate of the application;

[0034] In the figure: 1, core block; 1a, threaded hole in the core block; 2, shell; 2a, upper end port of the shell; 2b, lower end hole of the shell; 3, upper spring seat; 3a, threaded hole in the upper spring seat; 3b, upper spring groove; 3c, upper end groove of the upper spring seat; 4, bottom plate; 4a, lower spring groove; 4b, triangular groove; 5, horizontal limiting metal rubber; 6, medium stiffness metal rubber; 7, vertical damping metal rubber; 8, vertical limiting metal rubber; 9, high-force brass plate; 9a, connecting hole of the high-force brass plate; 10, spiral spring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the application clearer and more apparent, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application.

[0036] As shown in the figure, a composite metal vibration damper with longitudinal and transverse decoupling is provided. The vibration damper includes a housing 2 fixed on a base plate 4. The upper end of the core block 1 in the inner cavity of the housing bears the external vibration excitation. In the inner cavity of the housing, the core block is slidably placed at the damping plate at the top of the upper spring seat 3. Multiple helical springs 10 are provided in the inner cavity of the housing between the bottom surface of the upper spring seat and the base plate as the main elastic support element in the vertical direction.

[0037] The inner cavity of the housing is also equipped with four types of metal rubber elements with different densities and shapes: a high-stiffness horizontal limiting metal rubber element 5 used as an impact soft limiting element; a medium-stiffness metal rubber element 6 used as a horizontal elastic support element and a vertical auxiliary elastic support element; a high-stiffness vertical limiting metal rubber element 8 used as an impact soft limiting element; and a low-stiffness vertical damping metal rubber element 7 used as a vertical damping element.

[0038] The upper end of the core block protrudes from the upper port 2a of the housing at the top of the housing. When the vibration damper is working, the core block receives external vibration excitation and transmits the external vibration excitation into the vibration damper for vibration reduction and energy absorption.

[0039] Specifically, when vertical vibration excitation is transmitted, it is transmitted through the core block to the damping plate, and then to the upper spring seat. At this time, the helical spring acts as the main elastic support element in the vertical direction, the medium-stiffness metal rubber acts as the auxiliary elastic support element in the vertical direction, and the low-stiffness vertical damping metal rubber acts as the vertical damping element to jointly achieve the purpose of vertical vibration reduction and isolation. The high-stiffness vertical limiting metal rubber acts as the impact soft limiting element to achieve vertical impact soft limiting and prevent the spring from coiling.

[0040] When a horizontal vibration excitation is transmitted, the excitation is transmitted through the core block to the medium-stiffness metal rubber. The medium-stiffness metal rubber provides horizontal elastic support and also acts as a partial damping element, achieving the purpose of horizontal vibration reduction and isolation. The horizontal vibration excitation can then be transmitted through the inner wall of the shell to the horizontal limiting metal rubber, which acts as a soft impact limiting element to achieve horizontal impact soft limiting. During this process, the friction between the core block and the contact interface of the damping plate when the core block slides can also provide part of the horizontal damping force.

[0041] When the shock absorber is working, the horizontal limiting metal rubber element performs a horizontal impact soft limit on the upper end of the core block.

[0042] When the vibration damper is working, it exhibits the nonlinear effect of metal rubber and the linear effect of spring in the vertical and horizontal mechanical characteristics. That is, when the load force is small, the main mechanical characteristics of the vibration damper exhibit a linear damping effect; when the load force is large, the main mechanical characteristics of the vibration damper exhibit a nonlinear damping effect.

[0043] The metal rubber element is a combination of metal wire and rubber, and the performance parameters of the metal rubber element are adjusted by adjusting the hardness of the metal wire and adjusting the density and thickness of the metal rubber element.

[0044] The horizontal limiting metal rubber element and the medium-rigidity metal rubber element are both annular metal rubbers, and the horizontal limiting metal rubber element has the same outer diameter as the medium-rigidity metal rubber element but a larger inner diameter.

[0045] The medium-rigidity metal rubber element 6 is an annular body sleeved on the central axis of the core block, and the lower end surface of the medium-rigidity metal rubber element is in close contact with the core block.

[0046] The horizontal limiting metal rubber element 5 is an annular body sleeved on the central axis of the core block, and is located at the upper end of the medium-rigidity metal rubber element, the lower end surface of the horizontal limiting metal rubber element is in close contact with the upper end surface of the medium-rigidity metal rubber element, the medium-rigidity metal rubber element is in close contact with the central axis of the core block, and there is a gap between the inner side wall of the horizontal limiting metal rubber element and the central axis of the core block.

[0047] The damping plate is a high-force brass plate 9 in close contact with the lower end of the core block.

[0048] The high-force brass plate is connected to the upper spring seat through fasteners, and the lower end of the upper spring seat has four upper spring grooves 3b for positioning the upper end of the coil spring.

[0049] The bottom plate has four triangular grooves 4b and four lower spring grooves 4a evenly distributed circumferentially, the triangular grooves are used for installing the vertical limiting metal rubber element, and the lower spring grooves are used for positioning the lower end of the coil spring.

[0050] The upper spring seat upper end groove is bolted through the upper spring seat inner threaded hole 3a and the high-force brass plate connecting hole 9a of the high-force brass plate.

[0051] The shock absorber includes the following steps when assembled:

[0052] Step S1, first, install the four vertical limiting metal rubbers in the corresponding triangular grooves, second, install the four coil springs in the corresponding lower spring grooves, then install the vertical damping metal rubber in the inner hole of the coil spring, install the high-force brass plate in the upper spring seat upper end groove, place the core block on the high-force brass plate, and position the upper end of the coil spring in the upper spring groove.

[0053] Step S2, the horizontal limiting metal rubber element and the medium stiffness metal rubber element are sequentially sleeved at the core block;

[0054] Step S3, the shell and the bottom plate after the above installation step are combined together to complete the assembly of the shock absorber.

[0055] In step S3 of the example, the bottom plate and the shell are connected by bolts, and then can be installed in the required place.

[0056] Embodiment:

[0057] The example provides a longitudinal and transverse decoupling composite metal shock absorber, which can be fixed on other structures through the shell lower end hole 2b and the bottom plate hole.

[0058] The example includes a core block 1, a shell 2, an upper spring seat 3, a bottom plate 4, metal rubbers (four kinds), a high-strength brass plate 9, and a spiral spring 10. The horizontal limiting metal rubber 5 and the medium stiffness metal rubber 6 are annular metal rubbers with the same outer diameter and different thicknesses, and the inner diameter of the horizontal limiting metal rubber 5 is larger than that of the medium stiffness metal rubber 6. The vertical damping metal rubber 7 is a cylindrical metal rubber, and the vertical limiting metal rubber 8 is a special-shaped metal rubber.

[0059] As shown in Figure 1 , the shell 2 and the bottom plate 4 are connected by bolts to form a whole. The core block 1 receives external vibration excitation through the shell upper port 2a and transmits the external vibration excitation into the shock absorber for vibration absorption and energy absorption. The shell lower end hole 2b and the bottom plate hole are connected by bolts to facilitate the installation of the shock absorber in the required place.

[0060] As shown in Figure 2 , Figure 3 , the medium stiffness metal rubber 6 is sleeved on the central axis of the core block 1, and the lower end surface of the medium stiffness metal rubber 6 is in close contact with the core block 1. In turn, the horizontal limiting metal rubber ring 5 is also sleeved on the central axis of the core block 1, but located on the upper end of the medium stiffness metal rubber 6. The lower end surface of the horizontal limiting metal rubber 5 is in close contact with the upper end surface of the medium stiffness metal rubber 6. At the same time, the medium stiffness metal rubber 6 is attached to the central axis of the core block 1, the horizontal limiting metal rubber 5 is separated from the central axis of the core block 1, and the horizontal limiting metal rubber 5 and the medium stiffness metal rubber 6 are attached to the inner wall of the shell 2.

[0061] The upper spring seat upper end groove 3b is used for the installation of the high-strength brass plate 9, and the high-strength brass plate is connected by bolt connection through the upper spring seat internal threaded hole 3a and the high-strength brass plate connecting hole 9a. The core block 1 is located at the upper end of the high-strength brass plate 9 and is in close contact with it.

[0062] The upper spring groove 3b of the upper spring seat 3 is used for positioning the upper end of the coil spring 10, the lower spring groove 4a of the bottom plate is used for positioning the lower end of the coil spring 10, and the vertical damping metal rubber 7 is placed in the inner hole of the spring 10. The damper uses four coil springs 10, and the upper and lower end positioning forms can be seen from Figure 4 The four upper spring grooves 3b are evenly distributed on the circumference of the upper spring seat 3, Figure 5 The four lower spring grooves 4a are evenly distributed on the circumference of the bottom plate 4.

[0063] The bottom plate 4 is used as the lower end support of the entire damper, and four triangular grooves are evenly distributed on the circumference of the bottom plate 4, and the vertical limiting metal rubber 8 is installed in the groove.

[0064] During assembly, first, the four vertical limiting metal rubbers 8 are installed in the corresponding triangular grooves 4b, and then the four coil springs 10 are also installed in the corresponding lower spring grooves 4a. At this time, the vertical damping metal rubber 7 is installed in the inner hole of the coil spring 10, the high-force brass plate 9 is installed in the upper end groove 3b of the upper spring seat, then the upper spring seat 3 is placed on the upper end of the four coil springs 10, so that the upper end of the coil spring 10 is positioned in the upper spring groove 3b, and then the core block 1 is placed on the high-force brass plate 9. In order to facilitate the installation of the damper, the horizontal limiting metal rubber 5 and the medium stiffness metal rubber 6 are sequentially placed in the shell 2, and finally the shell 2 and the bottom plate 4 after the above installation are combined together, thereby completing the assembly of the damper.

[0065] During operation, the core block 1 receives external vibration excitation. When the vertical vibration excitation is transmitted, it is transmitted to the high-force brass plate 9 through the core block 1, and then to the upper spring seat 3. At this time, the coil spring 10 serves as a vertical main elastic supporting element, the medium stiffness metal rubber 6 serves as a vertical auxiliary elastic supporting element, and the low stiffness vertical damping metal rubber 7 serves as a vertical damping element to achieve the purpose of vertical vibration reduction and isolation; in addition, the high stiffness vertical limiting metal rubber 8 serves as an impact soft limiting element, which can achieve vertical impact soft limiting and avoid spring coil.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A composite metal damper with longitudinal and transverse decoupling, characterized by: The shock absorber comprises a shell (2) fixed on a bottom plate (4), an external vibration excitation carried on an upper end of a core block (1) in a shell cavity, the core block being slidably arranged at a damping plate at a top of an upper spring seat (3), a plurality of helical springs (10) being arranged in the shell cavity between a bottom surface of the upper spring seat and the bottom plate as vertical main elastic supporting elements; The shell cavity is further provided with four metal rubber elements with different densities and different shapes, which are a high-rigidity horizontal limiting metal rubber element (5) used as an impact soft limiting element, a medium-rigidity metal rubber element (6) used as a horizontal elastic supporting element and a vertical auxiliary elastic supporting element, a high-rigidity vertical limiting metal rubber element (8) used as an impact soft limiting element, and a low-rigidity vertical damping metal rubber element (7) used as a vertical damping element; The upper end of the core block protrudes from a shell upper port (2a) at a top of the shell, and when the shock absorber works, the core block receives external vibration excitations and transmits the external vibration excitations into the shock absorber to perform shock absorption and energy absorption, Specifically, when a vertical vibration excitation is transmitted, the vibration excitation is transmitted to the damping plate through the core block and then to the upper spring seat, at this time, the helical springs serve as vertical main elastic supporting elements, the medium-rigidity metal rubber serves as a vertical auxiliary elastic supporting element, and the low-rigidity vertical damping metal rubber serves as a vertical damping element to achieve the purpose of vertical vibration reduction and isolation; the high-rigidity vertical limiting metal rubber serves as an impact soft limiting element to achieve vertical impact soft limiting and avoid spring coil. When a horizontal vibration excitation is transmitted, the vibration excitation is transmitted to the medium-rigidity metal rubber through the core block, the medium-rigidity metal rubber provides horizontal elastic support and simultaneously plays a partial damping role to achieve the purpose of horizontal vibration reduction and isolation, and the horizontal vibration excitation is transmitted to the horizontal limiting metal rubber through the inner wall of the shell, the horizontal limiting metal rubber serves as an impact soft limiting element to achieve horizontal impact soft limiting; in this process, the contact interface friction between the core block and the damping plate when the core block slides can also provide partial horizontal damping force. When the shock absorber works, the horizontal limiting metal rubber element performs horizontal impact soft limiting on the upper end of the core block; when the shock absorber works, the mechanical characteristics in the vertical and horizontal directions present nonlinear action of the metal rubber and linear action of the spring, i.e., when the load force is small, the mechanical characteristics of the shock absorber mainly present linear damping action; When the load force is large, the mechanical characteristics of the shock absorber mainly present nonlinear damping action.

2. The composite metal damper of claim 1, wherein: The metal rubber element is a combination of metal wires and rubber, and the performance parameters of the metal rubber element are adjusted by adjusting the hardness of the metal wires and adjusting the density and thickness of the metal rubber element.

3. The composite metal damper of claim 1, wherein: The horizontal limiting metal rubber element and the medium-rigidity metal rubber element are annular metal rubbers, have the same outer diameter and different thicknesses, and the inner diameter of the horizontal limiting metal rubber element is larger than that of the medium-rigidity metal rubber element; the vertical damping metal rubber element (7) is a cylindrical metal rubber; and the vertical limiting metal rubber element (8) is a special-shaped metal rubber. The medium-rigidity metal rubber element (6) is a ring-shaped body sleeved on the middle axis of the core block, and the lower end surface of the medium-rigidity metal rubber element is in close contact with the core block. The horizontal limiting metal rubber element (5) is a ring-shaped body sleeved on the middle axis of the core block, and is located at the upper end of the medium-rigidity metal rubber element, the lower end surface of the horizontal limiting metal rubber element is in close contact with the upper end surface of the medium-rigidity metal rubber element, the medium-rigidity metal rubber element is attached to the middle axis of the core block, and a gap exists between the inner side wall of the horizontal limiting metal rubber element and the middle axis of the core block, and the horizontal limiting metal rubber element and the medium-rigidity metal rubber element are attached to the inner wall of the shell.

4. The composite metal damper of claim 3, wherein: The damping plate is a high-force brass plate (9) in close contact with the lower end of the core block.

5. A composite metal damper of longitudinal and transverse decoupling according to claim 4, characterized in that: The high-force brass plate is connected to the upper spring seat through fasteners, and the lower end of the upper spring seat has four upper spring grooves (3b) for positioning the upper end of the coil spring. The bottom plate is circumferentially uniformly distributed with four triangular grooves (4b) and four lower spring grooves (4a), the triangular grooves are used for installing the vertical limiting metal rubber element, and the lower spring grooves are used for positioning the lower end of the coil spring; the bottom plate is connected to the shell through fasteners.

6. A composite metal damper of longitudinal-transverse decoupling according to claim 5, characterized in that: The upper spring seat upper end groove is bolted through the upper spring seat inner threaded hole (3a) and the high-force brass plate connecting hole (9a) of the high-force brass plate.

7. A composite metal damper of longitudinal-transverse decoupling according to claim 6, characterized in that: The shock absorber includes the following steps when assembled: Step S1, first, four vertical limiting metal rubbers are installed in the corresponding triangular grooves, second, four coil springs are also installed in the corresponding lower spring grooves, then the vertical damping metal rubber is installed in the inner hole of the coil spring, the high-force brass plate is installed in the upper spring seat upper end groove, the upper spring seat is placed on the upper end of the four coil springs, the upper end of the coil spring is positioned in the upper spring groove, and then the core block is placed on the high-force brass plate; Step S2, the horizontal limiting metal rubber element and the medium-rigidity metal rubber element are sleeved on the core block; Step S3, the shell and the bottom plate installed through the above steps are combined together to complete the assembly of the shock absorber.

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