A vibration isolation and damping composite device

Abstract

The application provides a kind of vibration isolation buffer composite device, belong to vibration isolation technical field, the device includes: lower shell and bottom plate, both fixedly connected to form lower cavity;Lower core shaft, with radially extending lower core shaft pressing plate, lower core shaft pressing plate is arranged in lower cavity, and lower core shaft part passes through lower shell;Lower spring, which is arranged in lower cavity;Lower guide sleeve, which is arranged outside lower spring;First damping pad and second damping pad, which are arranged in lower cavity and located on both sides of lower core shaft pressing plate;Upper shell, which is fixedly connected with lower shell to form upper cavity;Upper core shaft, with radially extending upper core shaft pressing plate, upper core shaft pressing plate is arranged in upper cavity, and upper core shaft part passes through upper shell and is connected with lower core shaft;Upper spring, which is arranged in upper cavity and located between upper core shaft pressing plate and upper shell;Upper guide sleeve, which is arranged outside upper spring;Third damping pad and fourth damping pad, which are arranged in upper cavity and located on both sides of the upper core shaft pressing plate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vibration isolation, and particularly relates to a vibration isolation and buffering composite device. BACKGROUND

[0002] The high-speed development of weapon equipment requires airborne equipment to have a wide working condition adaptability. In particular, for inertial navigation equipment, optical and electrical pod equipment, in order to have a wider equipment applicability, adapt to different aircraft models, different flight environments, more different flight attitudes, and higher flight speed use requirements, the vibration isolation and buffering device is required to have the following capabilities:

[0003] 1) More installation environments, compatible with positive installation, inverted installation, side installation, and having consistent good functional requirements (consistency of vibration isolation efficiency and resonance frequency);

[0004] 2) Consistent vibration isolation effect (vibration isolation efficiency tends to be consistent) on different magnitude wideband random vibrations;

[0005] 3) Good suppression effect on large impact load generated during operation, and impact magnitude is not amplified (impact is not amplified as much as possible in limited space);

[0006] 4) Reliability requirements under different acceleration overload environments, while having good functional requirements (consistency of vibration isolation efficiency and frequency);

[0007] The existing metal mesh, metal rubber, rubber and other vibration isolators have good vibration isolation and buffering effect, and can be applied to positive installation, inverted installation and other environments, but the product functional modules are not necessarily consistent in positive installation and inverted installation environments, so the stiffness is inconsistent. The existing vibration isolators with vibration isolation and shock isolation effects have complex structure and single structure stiffness. When applied to positive installation and inverted installation environments, due to structural design, functional element arrangement and other limitations, the stiffness changes greatly in different installation environments, resulting in changes in the vibration isolation effect of weapon equipment, or due to structural relationship, the service life of the vibration isolation and buffering device is greatly lost. At the same time, the existing vibration isolators often take the vibration isolator not being damaged as the technical evaluation point in a low space and large load impact environment, at which time the vibration isolator loses its function. In this technology, the impact response load is generally amplified by 2-3 times. This technical level cannot meet the use requirements of some weapon equipment.

[0008] Therefore, a new vibration isolation device is needed to meet the vibration isolation and buffering installation and use requirements of higher level strategic weapon equipment. SUMMARY

[0009] The present application aims to provide a vibration isolation and buffering composite device to solve or alleviate at least one problem in the background art.

[0010] The technical solution of the present application is: a vibration isolation and buffering composite device, comprising:

[0011] a lower shell having a cavity;

[0012] a bottom plate fixedly connected with the lower shell to form a lower cavity;

[0013] a lower core shaft having a radially extending lower core shaft pressing plate, the lower core shaft pressing plate being arranged in the lower cavity, and the lower core shaft partially penetrating through the lower shell;

[0014] a lower spring arranged in the lower cavity and between the lower core shaft and the bottom plate, for providing elastic force to the lower core shaft;

[0015] a lower guide sleeve arranged outside the lower spring;

[0016] a first damping pad and a second damping pad arranged in the lower cavity and on both sides of the lower core shaft pressing plate; and

[0017] an upper shell having a cavity, the upper shell being fixedly connected with the lower shell to form an upper cavity;

[0018] an upper core shaft having a radially extending upper core shaft pressing plate, the upper core shaft pressing plate being arranged in the upper cavity, and the upper core shaft partially penetrating through the upper shell, the upper core shaft being connected with the lower core shaft penetrating through the lower shell;

[0019] an upper spring arranged in the upper cavity and between the upper core shaft pressing plate and the upper shell, for providing elastic force to the upper core shaft;

[0020] an upper guide sleeve arranged outside the upper spring;

[0021] a third damping pad and a fourth damping pad arranged in the upper cavity and on both sides of the upper core shaft pressing plate.

[0022] In an optional embodiment of the present application, the lower shell has radially extending upper and lower mounting plates at both ends, and the upper shell has a radially extending mounting plate, the upper and lower mounting plates being respectively connected with the bottom plate and the mounting plate of the upper shell through connecting members.

[0023] In an optional embodiment of the present application, the bottom plate has a boss for positioning the lower spring at one side of the lower cavity.

[0024] In an optional embodiment of the present application, the first damping pad and the third damping pad have the same thickness, the second damping pad and the fourth damping pad have the same thickness, and the thickness of the first damping pad and the third damping pad is smaller than the thickness of the second damping pad and the fourth damping pad.

[0025] In an optional embodiment of the present application, the first damping pad, the second damping pad, the third damping pad and the fourth damping pad are all metal mesh pads.

[0026] In an optional embodiment of the present application, the first damping pad and the third damping pad are symmetrically distributed on both sides of the connecting surface of the lower shell and the upper shell, thereby forming an upper buffer module and a lower buffer module.

[0027] The lower spring, the lower guide sleeve and the second damping pad are arranged in the order from inside to outside in the radial direction at the lower end of the lower core shaft, thereby forming a lower vibration isolation module distributed in the lower cavity.

[0028] The upper spring, the upper guide sleeve and the fourth damping pad are arranged in the order from inside to outside in the radial direction at the upper end of the upper core shaft, thereby forming an upper vibration isolation module distributed in the upper cavity.

[0029] In an optional embodiment of the present application, an axial and radial displacement amount is provided between the upper vibration isolation module and the upper buffer module, and between the lower vibration isolation module and the lower buffer module.

[0030] In an optional embodiment of the present application, a tight fit is adopted between the lower spring and the lower core shaft, and between the upper spring and the upper core shaft, thereby forming an axial friction loss unit.

[0031] In an optional embodiment of the present application, the lower core shaft and the upper core shaft are connected through a threaded structure, the distance between the lower core shaft pressing plate of the lower core shaft and the upper core shaft pressing plate of the upper core shaft is changed through the threaded structure, and the adjustment of the compression amount of the upper and lower vibration isolation modules is realized.

[0032] In an optional embodiment of the present application, a gasket is further included, which is arranged between the fourth damping pad and the upper shell, and is used to form a friction loss unit.

[0033] The application effectively solves the vibration isolation and buffering use requirements of weapon equipment in different flight attitudes (corresponding to the normal installation, reverse installation and side installation of the vibration isolation and buffering composite device), different value working conditions (corresponding to different vibration environments) and different acceleration overloads in the fields of airborne and photoelectric pod, etc. The upper and lower symmetric design of the elastic element is adopted, the product is consistent in normal installation and reverse installation, the three-dimensional space consistency design is adopted, and the problem of low lateral static stiffness of the traditional vibration isolator is effectively solved. The high stiffness module and the low stiffness module are combined in the structural form, the design of three-axis six-direction dynamic and static stiffness and other stiffnesses is realized, the high and low stiffness modules are designed in parallel, the vibration isolation and buffering device has good low-frequency characteristics in a certain value of vibration (without touching the first and second damping pads under small displacement), and has good high-frequency characteristics in impact, large overload and acceleration (touching the first and second damping pads under large displacement), the first and fourth damping pads are connected in parallel, the deformation of the vibration isolation module net pad (fourth damping pad) under large load is effectively reduced, and the service life of the vibration isolation and buffering composite device is improved, the large pre-pressing design is adopted, the inner friction mechanism is formed between the gasket and the shell, and the spring and the installation core, the amplification multiple at the resonance of the device is effectively reduced, and the stability and structural reliability of the isolated equipment are improved, the large pre-pressing design is adopted, and the spring composite net pad design method is used, the structural stability and performance stability of the vibration isolation and buffering device are improved, and the continuity of the overall stiffness of the system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions provided by the present application, the following will briefly introduce the drawings. Obviously, the drawings described below are only some embodiments of the present application.

[0035] Figure 1 It is an external schematic view of the vibration isolation and buffering composite device of the present application.

[0036] Figure 2 It is an internal sectional view of the vibration isolation and buffering composite device of the present application.

[0037] Figure 3 It is a schematic view of the lower shell in the present application.

[0038] Figure 4 It is a schematic view of the lower shaft in the present application.

[0039] Figure 5 It is a schematic view of the upper shaft in the present application.

[0040] Reference signs:

[0041] 11-lower shell, 111-lower mounting plate, 112-upper mounting plate, 113-through hole

[0042] 12-lower shaft, 121-lower shaft pressing plate, 122-external thread structure

[0043] 13-First vibration damping pad

[0044] 14-Second vibration damping pad

[0045] 15-Lower guide sleeve

[0046] 16-lower spring

[0047] 17-Base plate, 171-Boss

[0048] 21-Upper shell

[0049] 22-Upper mandrel, 221-Upper mandrel pressure plate, 222-Internal thread structure

[0050] 23-Third vibration damping pad

[0051] 24-Fourth vibration damping pad

[0052] 25-Upper guide sleeve

[0053] 26- Upper Spring

[0054] 27-Gasket Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings.

[0056] This application proposes a vibration isolation and buffer composite device. The device has a simple structure, is easy to implement, and has both vibration isolation and buffering capabilities. The structure is symmetrical in both upright and inverted states, and can realize a three-axis six-way installation design, which has a wide range of flight adaptability. At the same time, a friction energy dissipation damping unit is introduced, which on the one hand achieves a good absorption effect on the peak of the impact response, and on the other hand plays a certain role in suppressing the excessive amplification factor at the resonance point of the system.

[0057] like Figure 1 and Figure 2 As shown, the vibration isolation and buffer composite device provided in this application includes: a lower housing 11, a lower spindle 12, a first vibration damping pad 13, a second vibration damping pad 14, a lower guide sleeve 15, a lower spring 16, a base plate 17, and an upper housing 21, an upper spindle 22, a third vibration damping pad 23, a fourth vibration damping pad 24, an upper guide sleeve 25, and an upper spring 26.

[0058] like Figure 3As shown, the lower housing 11 has a cylindrical structure with an internal cavity. The lower side of the lower housing 11 has an internal opening, and the upper side is a flat surface. The flat surface of the lower housing 11 has a through hole 113 through which the lower mandrel 12 can pass. In addition, the lower housing 11 has radially extending lower mounting plate 111 and upper mounting plate 112 at both ends. The lower mounting plate 111 and upper mounting plate 112 are respectively provided with bolt holes for connecting to the base plate 17 and the upper housing 21.

[0059] The base plate 17 is installed at the opening of the lower housing 11 and can be fixed to the lower housing 11 by bolts, so that a lower cavity can be formed between the base plate 17 and the lower housing 11. The inner side of the base plate 17 (i.e. the inner side of the cavity) is provided with a boss 171 for positioning the lower spring 16.

[0060] like Figure 4 As shown, the main body of the lower mandrel 12 has a stepped structure, and a radially extending lower mandrel pressure plate 121 is provided on its main body. The upper end of the main body of the lower mandrel 12 has an external thread structure 122 for threaded connection with the upper mandrel 22. The lower mandrel pressure plate 121 of the lower mandrel 12 is located in the lower cavity, and its main body passes through the through hole of the lower housing 11. There is a gap between the main body of the lower mandrel 12 and the through hole 113 of the lower housing 11, which can provide the displacement required for the lateral movement of the vibration isolation buffer device.

[0061] The lower spring 16 is fitted between the boss 171 of the base plate 17 and the main structure of the lower spindle 12, and is used to provide elastic force for the lower spindle 12.

[0062] The first damping pad 13 and the second damping pad 14 are disposed in the lower cavity and are located on the upper and lower sides of the lower mandrel pressure plate 121 of the lower mandrel 12, respectively.

[0063] The lower guide sleeve 15 is located on the outside of the lower spring 16.

[0064] Similarly, the upper housing 21 has a cylindrical structure with an internal cavity. The lower side of the upper housing 21 is open, and the upper side is flat, with a through hole through which the upper mandrel 22 can pass. The lower end of the upper housing 21 has a radially extending mounting plate, which is fixedly connected to the lower housing 11 by bolts. Thus, an upper cavity can be formed between the upper housing 21 and the lower housing 11.

[0065] like Figure 5As shown, the main body of the upper mandrel 22 is a circular tube structure, and an internal thread structure 222 is arranged inside the main body of the upper mandrel 22. The internal thread structure 222 is connected with the external thread structure 122 of the lower mandrel 12, so as to realize the connection of the two and the positioning of the upper mandrel 22. The lower end of the main body of the upper mandrel 22 is provided with an upper mandrel pressing plate 221. The upper mandrel pressing plate 221 is arranged in the upper cavity and passes through the through hole of the upper shell 21. The upper end of the internal thread structure 222 of the upper mandrel 22 is connected with the mounting lug (not shown) of the damping device through a bolt.

[0066] The upper spring 26 is sleeved outside the main body of the upper mandrel 22 and is located between the upper mandrel pressing plate 221 and the upper shell 21, so as to provide an elastic force for the upper mandrel 22.

[0067] The third damping pad 23 and the fourth damping pad 24 are arranged in the upper cavity and are located on the lower side and the upper side of the upper mandrel pressing plate 221 of the upper mandrel 22, respectively.

[0068] The upper guide sleeve 25 is arranged outside the upper spring 16.

[0069] The lower spring 16, the lower guide sleeve 15 and the second damping pad 14 are sequentially arranged in the radial direction from the inside to the outside at the lower end of the lower mandrel 12, so as to form a lower vibration isolation module distributed in the lower cavity. The upper spring 26, the upper guide sleeve 25 and the fourth damping pad 24 are sequentially arranged in the radial direction from the inside to the outside at the upper end of the upper mandrel 22, so as to form an upper vibration isolation module distributed in the upper cavity. The first damping pad 13 and the third damping pad 23 are symmetrically arranged on both sides of the plane of the lower shell 11, so as to form an upper buffer module and a lower buffer module and are respectively distributed in the upper cavity and the lower cavity.

[0070] In the preferred embodiment of the present application, the diameters of the first damping pad 13, the second damping pad 14, the third damping pad 23 and the fourth damping pad 24 are the same or similar. Further, the thicknesses of the first damping pad 13 and the third damping pad 23 are the same or similar, the thicknesses of the second damping pad 14 and the fourth damping pad 24 are the same or similar, and the thicknesses of the first damping pad 13 and the third damping pad 23 are smaller than the thicknesses of the second damping pad 14 and the fourth damping pad 24.

[0071] In some embodiments of the present application, the first damping pad 13, the second damping pad 14, the third damping pad 23 and the fourth damping pad 24 are all metal mesh pads.

[0072] In the application or, the axial and radial displacement amount (hereinafter referred to as high stiffness module starting displacement) is reserved between the upper vibration isolation module and the upper buffer module, and between the lower vibration isolation module and the lower buffer module. When working under certain load or displacement condition (displacement is less than high stiffness module starting displacement), the vibration isolation module is in linear working area, and better vibration isolation effect can be achieved under different working conditions. Taking axial downward movement as an example, when working under large overload or large displacement condition (displacement is greater than high stiffness module starting displacement), the lower core shaft pressing plate 121 of the lower core shaft 12 acts on the lower vibration isolation module, and the upper core shaft pressing plate 221 of the upper core shaft 22 acts on the upper buffer module. The lower vibration isolation module and the upper buffer module are connected in parallel, the stiffness of the composite device is greatly increased, the three-axial anti-overload design can be realized, the problems of accelerated fatigue, reduced life and permanent plastic deformation and unrecoverability of the shock absorber under large deformation due to excessive strain of the shock absorber are effectively solved, and the life and performance stability are effectively improved.

[0073] In some embodiments of the application, the lower spring 16 and the main body of the lower core shaft 12 are tightly fitted, and the upper spring 26 and the main body of the upper core shaft 22 are tightly fitted, thereby forming an axial friction loss unit, which increases the axial structural damping when moving axially, effectively reducing the amplification multiple and impact amplification problem under resonance working condition.

[0074] In some embodiments of the application, the device further comprises a gasket 27 arranged between the fourth shock absorber 24 and the upper shell 21. The upper spring 26, the upper guide sleeve 25 and the fourth shock absorber 24 form an upper vibration isolation module with a certain pre-pressing amount, the gasket 27 is tightly fitted with the upper shell 21, and the gasket 27 and the upper shell 21 form a friction loss unit, which can effectively increase the structural damping when moving laterally, effectively reducing the amplification multiple and impact amplification problem under the resonance working condition of the system.

[0075] In the application, the lower core shaft pressing plate 121 of the lower core shaft 12 and the inner wall of the lower shell 11, the upper core shaft pressing plate 221 of the upper core shaft 22 and the inner wall of the upper shell 21, and the gasket 27 and the inner wall of the upper shell 21 are provided with a laterally (radially) movable space, and the lower core shaft pressing plate 121 of the lower core shaft 12 and the planar lower side of the lower shell 11, and the upper core shaft pressing plate 221 of the upper core shaft 22 and the planar upper side of the lower shell 11 are provided with an axially movable space. Through the design of the axially and radially movable space, the lateral and axial static bearing capacity of the vibration isolation and buffer integrated device can be realized.

[0076] In the application, the distance between the lower core shaft pressing plate 121 of the lower core shaft 12 and the upper core shaft pressing plate 221 of the upper core shaft 22 can be adjusted through the threaded structure. By changing the distance, the compression amount of the upper and lower vibration isolation modules can be adjusted, the stiffness of the vibration isolation module of the vibration isolation and buffer composite device can be changed, and the performance parameters of the vibration isolation and buffer composite device can be quickly changed.

[0077] In the present application, the adjustment of the lateral compression area can be realized by designing the height of the lower core shaft body of the lower core shaft pressing plate 121, the height of the lower guide sleeve 15 and the height of the upper guide sleeve 25, the design of the lateral stiffness of the vibration isolation and buffering integrated device is realized, and the design of the three-axis six-direction stiffness, such as dynamic and static stiffness, is realized.

[0078] The present application effectively solves the vibration isolation and buffering use requirements of weapons and equipment in different flight attitudes (corresponding to the normal installation, reverse installation and side installation of the vibration isolation and buffering composite device), different value conditions (corresponding to different vibration environments) and different acceleration overloads in the fields of airborne and photoelectric pod; the upper and lower symmetric design of the elastic element is adopted, the normal installation and reverse installation of the product are completely consistent, the three-direction displacement space consistency design is adopted, the problem of low lateral static stiffness of the traditional vibration isolator is effectively solved; the structure form of the combination of the high stiffness module and the low stiffness module is adopted, the design of the three-axis six-direction stiffness, such as dynamic and static stiffness, is realized; the parallel structure design of the high and low stiffness modules is adopted, the vibration isolation and buffering device has good low-frequency characteristics in the use process of a certain value vibration, and has good high-frequency characteristics in the use of impact, large overload and acceleration environment; at the same time, the parallel way is adopted, which can effectively reduce the deformation of the vibration isolation module net pad under large load and improve the service life of the vibration isolation and buffering composite device product; the large pre-pressing design is adopted, which forms an internal friction mechanism between the gasket and the shell, and the spring and the installation core, effectively reducing the amplification multiple at the resonance of the device; the large pre-pressing design is adopted, and the spring composite net pad design method is used, which improves the stability of the structure and performance of the vibration isolation and buffering device, and improves the continuity of the overall stiffness of the system.

[0079] The vibration isolation and buffering composite device of the present application has the following advantages:

[0080] First, the structure is simple, the vibration isolation and buffering modules are connected in parallel, the stiffness can be converted, and the functional consistency (vibration isolation efficiency, resonance frequency, etc.) requirement under different values within a certain value range can be realized;

[0081] Second, through the parallel design of the vibration isolation and buffering modules, the high stiffness module can be started under a large value and a large displacement, effectively reducing the strain of the vibration isolation module net pad under a large value and a large displacement, avoiding the unrecoverability of the net pad under a large value and a large displacement, improving the service life of the vibration isolation module and improving the functional stability;

[0082] Third, through the design of the axial and radial movable space, the axial and lateral stiffness of the vibration isolation and buffering composite device is designed, the three-axis and six-direction dynamic and static bearing capacity of the vibration isolation and buffering device is realized, and the three-axis and six-direction installation design is realized;

[0083] Fourth, the internal formation axial, radial friction loss unit, through the internal damping loss effect, effectively reduce the system resonance place amplification too large and impact amplification, improve the control precision of the vibration isolation equipment, especially the optical and electrical equipment, and improve the reliability of the equipment;

[0084] Fifth; through the design, three-axis six-directional static and dynamic stiffness design can be realized;

[0085] Fifth, the use demand of advanced weapons in different flight attitudes, different accelerations, different values, different installation environments is solved, and the vibration isolation and buffering application fields of airborne, shipborne and missile-borne with high frequency stability, high product life and high installation applicability are suitable.

[0086] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vibration isolation cushioning composite device, characterized by, It comprises: a lower shell having a cavity; a bottom plate fixedly connected with the lower shell to form a lower cavity; a lower mandrel having a radially extending lower mandrel pressing plate, the lower mandrel pressing plate being arranged in the lower cavity, and the lower mandrel partially penetrating the lower shell; a lower spring arranged in the lower cavity and between the lower mandrel and the bottom plate, for providing elastic force to the lower mandrel; a lower guide sleeve arranged outside the lower spring; a first damping pad and a second damping pad arranged in the lower cavity and on both sides of the lower mandrel pressing plate; and an upper shell having a cavity, the upper shell being fixedly connected with the lower shell to form an upper cavity; an upper mandrel having a radially extending upper mandrel pressing plate, the upper mandrel pressing plate being arranged in the upper cavity, and the upper mandrel partially penetrating the upper shell, the upper mandrel being connected with the lower mandrel penetrating the lower shell; an upper spring arranged in the upper cavity and between the upper mandrel pressing plate and the upper shell, for providing elastic force to the upper mandrel; an upper guide sleeve arranged outside the upper spring; a third damping pad and a fourth damping pad arranged in the upper cavity and on both sides of the upper mandrel pressing plate.

2. The isolation mount composite device of claim 1, wherein Both ends of the lower shell have radially extending upper and lower mounting plates, the upper shell has a radially extending mounting plate, and the mounting plates of the lower and upper shells are respectively connected with the mounting plate of the bottom plate and the upper shell through connectors.

3. The isolation mount composite device of claim 1, wherein The bottom plate has a boss on one side of the lower cavity for positioning the lower spring.

4. The isolation mount composite device of claim 1, wherein The first and third damping pads have the same thickness, the second and fourth damping pads have the same thickness, and the thickness of the first and third damping pads is smaller than that of the second and fourth damping pads.

5. The isolation mount composite device of claim 4, wherein, The first, second, third and fourth damping pads are all metal mesh pads.

6. The vibration isolation cushioning composite apparatus of claim 4 or 5, wherein, The first and third damping pads are symmetrically distributed on both sides of the connecting surface of the lower and upper shells, thereby forming lower and upper buffer modules. The lower spring, lower guide sleeve and second damping pad are arranged in the lower cavity in the order from inside to outside in the radial direction, thereby forming a lower vibration isolation module distributed in the lower cavity. The upper spring, upper guide sleeve and fourth damping pad are arranged on the upper end of the upper mandrel in the order from inside to outside in the radial direction, thereby forming an upper vibration isolation module distributed in the upper cavity.

7. The isolation mount composite device of claim 6, wherein The upper vibration isolation module and the upper buffer module, and the lower vibration isolation module and the lower buffer module are all provided with axial and radial displacement amounts.

8. The isolation mount composite device of claim 6, wherein, The lower spring and the lower mandrel, and the upper spring and the upper mandrel are all in tight fit, thereby forming axial friction loss units.

9. The isolation mount composite device of claim 1, wherein, The lower mandrel and the upper mandrel are connected through a threaded structure, the distance between the lower mandrel pressing plate of the lower mandrel and the upper mandrel pressing plate of the upper mandrel is changed through the threaded structure, and the compression amount of the upper and lower vibration isolation modules is adjusted.

10. The isolation mount composite device of claim 1, wherein, A gasket is further arranged between the fourth damping pad and the upper shell, for forming a friction loss unit.

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