CN212775293U

CN212775293U - Back plate type metal shock absorber

Info

Publication number: CN212775293U
Application number: CN202020656674.8U
Authority: CN
Inventors: 刘阚元; 李昊宇; 张博; 王瑞瑞; 宋建华; 赵爽; 邸江顺; 张佳琪
Original assignee: China Academy of Launch Vehicle Technology CALT; Beijing Institute of Structure and Environment Engineering
Current assignee: China Academy of Launch Vehicle Technology CALT; Beijing Institute of Structure and Environment Engineering
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-03-23
Anticipated expiration: 2030-04-26

Abstract

The invention discloses a back plate type metal shock absorber which comprises a support, a bolt shaft, a front end cover, a rear end cover, a first spring, a second spring, a first metal shock absorption pad, a second metal shock absorption pad, a connecting shaft, a first lantern ring and a second lantern ring; the support is a cavity body, and the front end cover and the rear end cover are respectively arranged at two ends of the cavity body; the first lantern ring and the second lantern ring are of a revolving body structure and are sleeved with the first metal vibration damping pad and the second metal vibration damping pad respectively, the first spring is placed on the left side of the first lantern ring, and the second spring is placed on the right side of the second lantern ring; the bolt shaft sequentially penetrates through the spring I, the sleeve I, the metal vibration damping pad I, the connecting shaft, the sleeve II, the metal vibration damping pad II and the spring II and is tightly pressed and fixed through the front end cover and the rear end cover; the bottom of the support is fixed with the vibration source matrix, and the connecting shaft is connected with the vibration damping body.

Description

Back plate type metal shock absorber

Technical Field

The invention belongs to the technical field of vibration reduction, and particularly relates to a metal vibration reducer which limits the swinging of a vehicle-mounted cabinet in vibration and avoids overturning.

Background

The back plate type metal shock absorber is an all-metal shock absorber installed on the back of a vehicle-mounted cabinet. The vehicle-mounted cabinet is used for mounting vehicle-mounted electronic equipment, and vibration and impact transmitted to the vehicle-mounted cabinet have the greatest harm to reliable work of the electronic equipment according to the motion characteristics of military vehicles, so that the vehicle-mounted cabinet is necessary to be subjected to vibration reduction protection. Because of on-vehicle rack focus is higher, has the possibility of rocking, even tumbling in the transportation, and backplate type metal shock absorber installs at the back of on-vehicle rack, can effectively avoid, and then protects on-vehicle electronic equipment. The back plate type shock absorber is generally matched with a base type shock absorber to form a shock absorption system, wherein the base type shock absorber is used as a vertical main bearing unit, the back plate type shock absorber is used as a shock absorption unit in two horizontal directions, and the back plate type shock absorber is vertically coordinated and follows up to be used as an auxiliary bearing shock absorber.

The existing back plate type shock absorber is complex in structure and strict in matching requirement among parts, and a core element is made of a non-metal material and is unreliable in high-temperature and low-temperature severe environments.

Disclosure of Invention

Technical problem to be solved

The back plate type metal shock absorber is mounted on the back face of a vehicle-mounted cabinet, is matched with the base type shock absorber to form a shock absorption system, can effectively avoid the possibility that the cabinet shakes or even tips over in the transportation process, and further protects vehicle-mounted electronic equipment.

(II) technical scheme

The invention discloses a back plate type metal shock absorber which comprises a support, a bolt shaft, a front end cover, a rear end cover, a first spring, a second spring, a first metal shock absorption pad, a second metal shock absorption pad, a connecting shaft, a first lantern ring and a second lantern ring; the support is a cavity body, and the front end cover and the rear end cover are respectively arranged at two ends of the cavity body; the first lantern ring and the second lantern ring are of a revolving body structure and are sleeved with the first metal vibration damping pad and the second metal vibration damping pad respectively, the first spring is placed on the left side of the first lantern ring, and the second spring is placed on the right side of the second lantern ring; the bolt shaft sequentially penetrates through the spring I, the sleeve I, the metal vibration damping pad I, the connecting shaft, the metal vibration damping II, the sleeve II and the spring II and is tightly pressed and fixed through the front end cover and the rear end cover; the bottom of the support is fixed with the vibration source matrix, and the connecting shaft is connected with the vibration damping body.

Furthermore, the front end cover outer ring and the rear end cover outer ring are in small clearance fit with cavities at two ends of the support, and steps are arranged in the cavities at two ends to limit the axial direction of the support.

Furthermore, the inward sides of the front end cover and the rear end cover are provided with extending ends, the front end cover is in interference fit with the inner rings of the first spring, the rear end cover and the second spring, and impact of spring jumping on the end covers in the vibration process is avoided.

Furthermore, the bottom of the extending end is provided with an annular groove which is in clearance fit with the outer ring of the spring.

Further, the bolt shaft penetrates through the front end cover, the first spring, the first metal vibration damping pad, the first lantern ring, the connecting shaft, the second lantern ring, the second metal vibration damping pad, the second spring and the rear end cover and then is locked outside the rear end cover through the nut.

Furthermore, the connecting shaft is fixed by an extending end and an annular structure to form a T shape, and the extending end is provided with threads and connected with the vibration damping body.

Furthermore, the first lantern ring and the second lantern ring are of revolving body structures and are symmetrical to each other, and limiting shoulders are arranged on the revolving body and are fixedly connected with the connecting shaft.

Further, the left end of the first lantern ring and the right end of the second lantern ring are provided with lantern ring inner cavities with limiting functions, the first spring is inserted into the lantern ring inner cavity of the first lantern ring, and the second spring is inserted into the lantern ring inner cavity of the second lantern ring and used for guiding and limiting the spring.

Furthermore, a metal vibration damping pad is installed in the inner cavity of the lantern ring, and a step with a smaller radius is arranged in the inner cavity and is axially limited by the metal vibration damping pad.

Furthermore, the support is provided with a main body extension plate, and the support is connected with the vibration source matrix through a unthreaded hole in the main body extension plate, so that the installation and fixation of the vibration absorber are realized; or a threaded hole is arranged on the support main body and is directly connected with the vibration source base body.

Furthermore, an external thread is arranged at one end of the outer ring of the front end cover and matched with an internal thread at one end of the cavity of the support; the outer ring of the rear end cover is in small clearance fit with the other end of the cavity of the support, and the inner step of the cavity of the support is used for axial limiting.

Further, the left end of the first lantern ring and the outer diameter of the right end of the second lantern ring are reduced, the right end of the first lantern ring penetrates into the first spring, and the right end of the second lantern ring penetrates into the second spring, so that the inner diameter of the second spring is guided and limited by the first spring.

(III) advantageous technical effects

The back plate type metal shock absorber realizes coordination and follow-up through the small-stiffness spring vertically; the vibration energy is absorbed by the self-damping in the horizontal direction (radial direction) through the deformation of the metal vibration-absorbing pad, so that the buffer vibration-absorbing is realized. The invention has simple structure, convenient processing and high strength, ensures strong environmental adaptability, good corrosion resistance and long storage period by the all-metal structure, and can keep good vibration damping performance during the storage period.

Drawings

FIG. 1: a sectional view of an embodiment of a back plate type metal damper;

wherein: 1-a support; 2-bolt shaft; 3-front end cover; 4-rear end cap; 5, a first spring; 6-spring two; 7-a connecting shaft; 8, a first lantern ring; 9-lantern ring two; 10, a first metal damping pad; 11 a second metal damping pad; 12-nut

FIG. 2: a sectional view of a collar of an embodiment of a back plate type metal damper;

wherein: 81-a spring limiting section; 82-connecting shaft limit shoulder; 83-metal damping pad limiting shoulder

FIG. 3: a second cross-sectional view of the embodiment of the back plate type metal damper;

wherein:

Detailed Description

In addition to the embodiments described below, the invention is capable of other embodiments or of being practiced or carried out in various ways. It is to be understood, therefore, that the invention is not limited in its application to the details of construction and the arrangements of the components set forth in the following description or illustrated in the drawings. While only one embodiment has been described herein, the claims are not to be limited to that embodiment.

Example 1

Referring to fig. 1, the back plate type metal damper is composed of a support 1, a bolt shaft 2, a front end cover 3, a rear end cover 4, a first spring 5, a second spring 6, a first metal damping pad 10, a second metal damping pad 11, a connecting shaft 7, a first lantern ring, a second lantern ring and a nut 12.

The back plate type metal shock absorber takes a support 1 as a main body, a bolt shaft 7 as a center, the bolt shaft 7 penetrates through a front end cover 3 and a rear end cover 4, a spring I5, a spring II 6, a metal shock absorption pad I10, a metal shock absorption pad II 11, a connecting shaft 7, a lantern ring I, a lantern ring II and the connecting shaft 7, and the front end cover 3 and the rear end cover 4 are locked at two ends of the support 1 through two nuts 12, so that a whole is formed.

The main body of the support 1 is of a cavity structure, and the inner diameters of the two ends of the support are larger than that of the middle section, so that an inner step is formed and is limited by the front end cover 3 and the rear end cover 4. The support 1 is provided with a main body extending plate, and is connected with the vibration source matrix through a unthreaded hole in the extending plate, so that the vibration absorber is fixedly installed. The size of the extension plate and the position size of the unthreaded hole on the extension plate refer to the mounting hole position on the vibration source substrate, so that the method is unlimited, more flexible and wider in adaptation range.

The front end cover 3 and the rear end cover 4 are respectively arranged at two ends of the cavity of the support 1 and are of a revolving body structure. The outer ring of the bearing is in small clearance fit with the two ends of the cavity of the bearing, and the steps at the two ends of the cavity of the bearing 1 are used for axial limiting of the end cover. The center of the front end cover 3 and the center of the rear end cover 4 are provided with extending ends, and the extending ends are in interference fit with the inner ring of the spring, so that the impact of the spring jumping on the end covers in the vibration process is avoided; the bottom of the extending end is provided with an annular groove, so that the overall dimension can be reduced, and the annular groove is in clearance fit with the outer ring of the spring.

As shown in fig. 2, the first lantern ring 8 and the second lantern ring 9 are both of a revolving body structure and are symmetrical to each other, and one end of the outer ring is provided with a limit step 82 of the connecting shaft 7 for limiting the position of the connecting shaft 7; the inner cavity of the lantern ring is divided into two sections with different radiuses, a metal damping pad is installed in one section of the inner cavity, the other section of the inner cavity is limited by the spring 81, the spring is prevented from transversely jumping and being clamped on the edge of the extending end after being separated from the extending end of the end cover, and a step with a smaller radius is arranged between the two sections of the inner cavities and is limited by the metal damping pad in the axial direction 83.

The connecting shaft 7 is of an annular structure with a protruding end, the annular structure is used for installing a lantern ring, and the protruding end of the annular structure is an external thread screw rod and is connected with the vibration damping body nut. A transition structure is arranged between the screw rod and the annular structure, and when extreme large displacement occurs, the transition structure collides with the inner wall of the opening at the top of the support, so that collision and damage of external thread threads are avoided.

The spring is a left-handed spring and a right-handed spring.

The nut is double-nut, can effectively avoid vibration in-process pine to take off.

The back plate type metal shock absorber is connected with the back of the cabinet through a connecting shaft and connected with a vehicle side plate through a mounting hole in the support, the height direction of the cabinet is vertical, and the coordination and the follow-up are realized through a small-stiffness spring in the vertical direction in the running state of a vehicle; the vibration energy is absorbed by the self-damping in the horizontal direction (radial direction) through the deformation of the metal vibration-absorbing pad, so that the buffer vibration-absorbing is realized. The invention has simple structure, convenient processing and high strength, ensures strong environmental adaptability, good corrosion resistance and long storage period by the all-metal structure, and can keep good vibration damping performance during the storage period.

Example 2

Referring to fig. 3, the back plate type metal damper is composed of a support 1, a bolt shaft 2, a front end cover 3, a rear end cover 4, a first spring 5, a second spring 6, a first metal damping pad 10, a second metal damping pad 11, a connecting shaft 7, a first lantern ring 8, a second lantern ring 9 and a nut 12.

The back plate type metal shock absorber takes a support 1 as a main body, a bolt shaft 2 as a center, the bolt shaft 2 penetrates through a front end cover 3, a spring I8, a metal shock absorption pad I10, a lantern ring I8, a connecting shaft 7, a lantern ring II 9, a metal shock absorption pad II 11 and a rear end cover 4, and the rear end cover is locked at one end of the support through a locking nut, so that a whole is formed.

As shown in figure 3, the main body of the support 1 is of a cavity structure, one end of the support is provided with internal threads, and the inner diameter of the end part of the other end of the support is larger than that of the middle section of the support, so that an inner step is formed and is limited by the rear end cover 4. Threaded inner holes are formed in four corners of the bottom of a main body of the support 1 and are used for being connected with a vibration source base body, and the vibration absorber is fixedly installed. The mounting structure has smaller external dimension.

The front end cover 3 and the rear end cover 4 are both of a revolving body structure and are arranged at two ends of the cavity of the support 1. An external thread is arranged at one end of the outer ring of the front end cover 3 and is matched with an internal thread at one end of the cavity of the support 1; the other end is provided with an outer hexagon for clamping tools. The outer ring of the rear end cover 4 is in small clearance fit with the other end of the cavity of the support, and the axial limit is realized by the inner step of the cavity of the support 1. The protruding ends of the front end cover and the rear end cover are in interference fit with the inner ring of the spring, so that the impact of the spring jumping on the end covers in the vibration process can be avoided; the bottom of the extending end is provided with an annular groove, so that the overall dimension can be reduced, and the annular groove is in clearance fit with the outer ring of the spring.

The first lantern ring and the second lantern ring are of revolving body structures and are symmetrical to each other, and one end of the outer ring is provided with a convex connecting shaft limiting step for limiting the position of the connecting shaft; the inner ring at the other end is provided with a step with the diameter reduced for guiding the axial movement of the spring. The metal damping pad is installed to the lantern ring inner chamber, and spring direction one end is provided with the spacing step of metal damping pad.

The connecting shaft 7 is an annular structure with a protruding end, the annular structure is used for installing a lantern ring, and the protruding end of the annular structure is provided with internal threads and is used for being connected with the vibration damping body.

The first spring 5 is a left-handed spring and the second spring 6 is a right-handed spring.

The nut is a locking nut, and loosening in the vibration process can be effectively avoided.

While the embodiments of the present invention have been described in detail, the above embodiments are merely exemplary of the present invention, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A back plate type metal shock absorber is characterized by comprising a support, a bolt shaft, a front end cover, a rear end cover, a first spring, a second spring, a first metal shock absorbing pad, a second metal shock absorbing pad, a connecting shaft, a first lantern ring and a second lantern ring; the support is a cavity body, and the front end cover and the rear end cover are respectively arranged at two ends of the cavity body; the first lantern ring and the second lantern ring are of a revolving body structure and are sleeved with the first metal vibration damping pad and the second metal vibration damping pad respectively, the first spring is placed on the left side of the first lantern ring, and the second spring is placed on the right side of the second lantern ring; the bolt shaft sequentially penetrates through the spring I, the sleeve I, the metal vibration damping pad I, the connecting shaft, the metal vibration damping II, the sleeve II and the spring II and is tightly pressed and fixed through the front end cover and the rear end cover; the bottom of the support is fixed with the vibration source matrix, and the connecting shaft is connected with the vibration damping body.

2. The backplate-type metal shock absorber of claim 1, wherein the front and rear end cap outer rings are closely spaced with the cavities at the two ends of the support, and steps are provided in the cavities at the two ends to limit the axial direction of the shock absorber.

3. The backplate-type metal shock absorber of claim 1, wherein the front and rear end caps have an extended end on the inward side, and the front end cap is in interference fit with the first and second inner rings of the springs to prevent the springs from jumping and impacting the end caps during vibration.

4. The backplate-type metal shock absorber of claim 3, wherein the bottom of the protruding end is provided with an annular groove which is in clearance fit with the spring cup.

5. A backplate-type metal damper according to any one of claims 1 to 4 in which the bolt shaft passes through the front end cap, the first spring, the first collar, the first metal damping pad, the connecting shaft, the second collar, the second metal damping pad, the second spring and the rear end cap and is then locked by a nut on the outside of the rear end cap.

6. The backplate-type metal damper according to any one of claims 1 to 4, wherein the connecting shaft is T-shaped by fixing an extended end and a ring-shaped structure, and the extended end is provided with a thread to be connected with the damper body.

7. The backplate-type metal shock absorber of claim 5, wherein the first and second collars are of a solid of revolution structure, symmetrical to each other, and the solid of revolution is provided with a limit shoulder fixed to the connecting shaft.

8. The backplate-type metal shock absorber of claim 7, wherein the left end of the first collar and the right end of the second collar are provided with collar cavities with stoppers, the first spring is inserted into the collar cavity of the first collar, and the second spring is inserted into the collar cavity of the second collar for guiding and stopping the spring.

9. The backplate-type metal damper of claim 8, wherein the collar has an internal cavity receiving a metal damping pad, the internal cavity having a step of smaller radius for axial retention of the metal damping pad.

10. The backplate-type metal vibration damper according to claim 1, wherein the support is provided with a main body extension plate, and the vibration damper is connected with the vibration source substrate through a light hole on the main body extension plate to realize the installation and fixation of the vibration damper; or a threaded hole is arranged on the support main body and is directly connected with the vibration source base body.

11. The backplate-type metal shock absorber according to claim 1, wherein the front end cap has an external thread at one end of the outer ring that mates with an internal thread at one end of the cavity of the holder; the outer ring of the rear end cover is in small clearance fit with the other end of the cavity of the support, and the inner step of the cavity of the support is used for axial limiting.

12. The backplate-type metal damper according to claim 7, wherein the outer diameter of the left end of the first collar and the outer diameter of the right end of the second collar are reduced, the right end of the first collar penetrates the first spring, and the right end of the second collar penetrates the inner diameter of the second spring to guide and limit the spring.