CN213937857U

CN213937857U - Three-way equal frequency shock absorber

Info

Publication number: CN213937857U
Application number: CN202023154426.2U
Authority: CN
Inventors: 王勇; 王进; 邱小华
Original assignee: WUXI HONGYUAN DEVFLEX CO Ltd
Current assignee: WUXI HONGYUAN DEVFLEX CO Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-10
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a shock absorber, concretely relates to three-dimensional constant frequency shock absorber, it includes damping ring, lower damping ring, base, mounting bracket and adjusting screw, the base is equipped with the base counter bore, is equipped with upper portion counter bore and lower part counter bore on the mounting bracket respectively, be equipped with down the damping ring in the base counter bore, the top block of lower damping ring is located in the counter bore of lower part, be equipped with damping ring in the counter bore of upper portion, adjusting screw runs through damping ring, mounting bracket and lower damping ring in proper order, and threaded connection's mode is passed through to adjusting screw's bottom and base is connected, be equipped with the dabber on the damping ring down, the dabber includes the annular gasket of bottom and fixes the sleeve at annular gasket center, and wherein annular gasket locates between base counter bore and the lower damping ring, the sleeve registrates on adjusting screw. The utility model discloses have high low temperature resistant, vibration isolation shock-absorbing capacity well and compact structure's scheduling characteristic.

Description

Three-way equal frequency shock absorber

Technical Field

The utility model relates to a shock absorber, concretely relates to three-dimensional constant frequency shock absorber.

Background

The three-way equal-frequency shock absorber is mainly applied to a precise electronic component shock absorption system which has high requirements on three-way frequency, installation space and environmental adaptability in a severe vibration environment; in the transportation and use environment of the precision equipment, external vibration and impact load can damage precision components, thereby affecting the functional performance index of the equipment.

When the crystal oscillator is used, if the crystal oscillator is under the action of larger vibration or impact load, the crystal oscillator is easy to break down, and the functional performance of equipment is influenced. The severe vibration environment suffered by the space vehicle during launching and task execution is easy to damage the product structure and influence the working performance of a single machine. In order to ensure the safety of the aircraft, damping is generally provided when conditions permit.

At present, the vibration reduction design of the crystal oscillator basically adopts an integral vibration reduction scheme, namely the crystal oscillator performs vibration reduction along with a single machine or a whole machine. The quartz crystal oscillator has high requirements on the frequency of a vibration damping system and needs to meet the requirements of three-way equal frequency (85 +/-5 Hz). By adopting the overall vibration reduction scheme, when the system meets the requirement of the crystal oscillator on the frequency, the vibration reduction effect of the system cannot meet the vibration reduction requirements of other components. Meanwhile, with the development of science and technology, the requirements of the spacecraft on the equipment structure and the weight are gradually improved, and the indexes of the existing shock absorber, such as size, environmental adaptability, weight and the like, cannot meet the design requirements.

Disclosure of Invention

The utility model aims to overcome the aforesaid not enough, adopt three-dimensional equifrequency shock absorber to carry out the unit vibration isolation to components and parts, can effectual isolation vibration, protect equipment.

According to the technical scheme provided by the utility model, a three-dimensional constant frequency shock absorber, including last damping ring, lower damping ring, base, mounting bracket and adjusting screw, the base is equipped with the base counter bore, is equipped with upper portion counter bore and lower part counter bore on the mounting bracket respectively, be equipped with down the damping ring in the base counter bore, the top block of lower damping ring is located in the lower part counter bore, be equipped with the damping ring in the counter bore of upper portion, adjusting screw runs through damping ring, mounting bracket and lower damping ring in proper order, and threaded connection's mode is passed through to adjusting screw's bottom and base is connected, its characterized in that, be equipped with the dabber on the damping ring down, the dabber includes the annular gasket of bottom and fixes the sleeve at annular gasket center, and wherein annular gasket locates between base counter bore and the lower damping ring, the sleeve registrates on adjusting screw.

As a further improvement of the utility model, be equipped with the gasket between adjusting screw and the annular gasket.

As a further improvement, the middle part of the mounting bracket is provided with a rectangular groove, and the center of the groove is provided with a hollow hole.

As a further improvement of the utility model, the periphery of the hollow hole is provided with a plurality of positioning pin holes.

As a further improvement of the utility model, a plurality of circular holes are arranged on the base.

Compared with the prior art, the utility model, have following advantage:

1. the installation space is small, the structural support is good, and the performance is stable;

2. the three-dimensional equal frequency of the system is 85 +/-5 Hz;

3. the environment adaptability is wide, the corrosion resistance is realized, the high and low temperature resistance is realized, and no volatilization is caused;

4. the vibration damping and buffering effects are good.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Figure 3 is a cross-sectional view of the mandrel.

Description of reference numerals: 1-base, 1.1-base counter bore, 2-lower damping ring, 3-upper damping ring, 4-mounting bracket, 4.1-lower counter bore, 4.2-upper counter bore, 5-mandrel, 6-clamping groove, 7-adjusting screw, 8-gasket, 9-annular gasket, 10-sleeve, 11-groove, 12-hollowed hole, 13-circular hole and positioning pin hole 14.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

As shown in the figure, the three-way equal frequency vibration damper comprises an upper vibration damping ring 3, a lower vibration damping ring 2, a base 1, a mounting bracket 4 and adjusting screws 7, wherein the base 1 is provided with base counter bores 1.1, the mounting bracket 4 is respectively provided with upper counter bores 4.2 and lower counter bores 4.1, the base counter bores 4.1 are provided with four parts which are respectively positioned on four corners of the base 1, the lower vibration damping ring 2 is arranged in the base counter bores 1.1, the top part of the lower vibration damping ring 2 is clamped in the lower counter bores 4.1, the upper vibration damping ring 3 is arranged in the upper counter bores 4.2, the adjusting screws 7 sequentially penetrate through the upper vibration damping ring 3, the mounting bracket 4 and the lower vibration damping ring 2, the bottom part of the adjusting screws 7 is connected with the base 1 in a threaded connection manner, the lower vibration damping ring 2 is provided with a mandrel 5, the mandrel 5 comprises a ring-shaped gasket 9 at the bottom part and a sleeve 10 fixed in the center of the ring-shaped gasket 9, wherein the ring gasket 9 is arranged between the base 1.1 and the lower vibration damping ring 2, the sleeve 10 is sleeved on the adjusting screw 7.

A gasket 8 is arranged between the adjusting screw 7 and the sleeve 10, a clamping groove 6 is formed in the top of the sleeve 10, and the gasket 8 is arranged in the clamping groove 6.

A rectangular groove 11 is formed in the middle of the mounting bracket 4, a hollow hole 12 is formed in the center of the groove 11, a plurality of circular holes 13 are formed in the base 1, and the hollow hole 12 and the circular holes 13 are used for reducing weight; the periphery of the hollow hole 12 is provided with a plurality of positioning pin holes 14 for fixing a product.

The working principle of the utility model is as follows: as shown in the above figures, the vibration isolation element is connected with the mounting bracket 4 through a screw, when the vibration isolation element is subjected to external vibration impact load, the upper vibration damping ring 3 and the lower vibration damping ring 2 deform, and in the deformation process, the metal wires inside the two vibration damping rings slide relatively to each other to generate dry friction force, so that a large amount of vibration impact energy is dissipated, thereby playing a role in vibration isolation and buffering and protecting vibration damping equipment; the utility model discloses have the equal frequency characteristic of three-dimensional, two upper and lower damping rings of mounting bracket 4 play X and Y to the shock attenuation, and the upper portion counter bore 4.2 and the lower part counter bore 4.1 card of mounting bracket 4 have guaranteed Z again to the shock attenuation on two damping rings simultaneously, consequently, under arbitrary direction's excitation, high frequency metal isolator all has good, the same vibration isolation buffering effect, protects by the vibration isolation component.

Claims

1. A three-way equal frequency vibration absorber comprises an upper vibration absorbing ring (3), a lower vibration absorbing ring (2), a base (1), a mounting bracket (4) and adjusting screws (7), wherein the base (1) is provided with a base counter bore (1.1), the mounting bracket (4) is respectively provided with an upper counter bore (4.2) and a lower counter bore (4.1), the base counter bore (1.1) is internally provided with the lower vibration absorbing ring (2), the top of the lower vibration absorbing ring (2) is clamped in the lower counter bore (4.1), the upper vibration absorbing ring (3) is arranged in the upper counter bore (4.2), the adjusting screws (7) sequentially penetrate through the upper vibration absorbing ring (3), the mounting bracket (4) and the lower vibration absorbing ring (2), the bottom of the adjusting screws (7) is connected with the base (1) in a threaded connection mode, the three-way equal frequency vibration absorber is characterized in that the lower vibration absorbing ring (2) is provided with a mandrel (5), and the mandrel (5) comprises an annular gasket (9) at the bottom and a sleeve (10) fixed in the center of the annular gasket (9), the annular gasket (9) is arranged between the base counter bore (1.1) and the lower damping ring (2), and the sleeve (10) is sleeved on the adjusting screw (7).

2. A three-way constant frequency shock absorber according to claim 1, wherein a spacer (8) is provided between the adjusting screw (7) and the sleeve (10), wherein the top of the sleeve (10) is provided with a slot (6), and the spacer (8) is provided in the slot (6).

3. A three-way equi-frequency shock absorber as claimed in claim 1, wherein said mounting bracket (4) is provided with a rectangular recess (11) in the middle, and a hollowed-out hole (12) is provided in the center of the recess (11).

4. A three-way equi-frequency shock absorber as claimed in claim 3, wherein said hollowed out hole (12) is provided with a plurality of alignment pin holes (14) at its periphery.

5. A three-way equi-frequency shock absorber as claimed in claim 1, wherein said base (1) is provided with a plurality of circular apertures (13).