CN217814714U

CN217814714U - Air spring with stable structure

Info

Publication number: CN217814714U
Application number: CN202222164425.9U
Authority: CN
Inventors: 仝宁可; 付实现; 张锐; 顾红喜; 胥小强; 周易林; 陈海波
Original assignee: Suzhou Weibo Test Instrument Co ltd
Current assignee: Suzhou Weibo Test Instrument Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-15
Anticipated expiration: 2032-08-17

Abstract

An air spring with a stable structure comprises a piston, an air bag and an air chamber seat, wherein the piston is connected to an opening at the top of the air bag in a sealing manner, the air chamber seat is connected to an opening at the bottom of the air bag in a sealing manner, and the piston, the air bag and the air chamber seat form a closed cavity together; the piston is matched with an upper pressing block arranged on the inner side of the top opening of the air bag through a threaded sleeve arranged at the bottom of the piston and is fixedly connected in a sealing manner through a first screw; the air chamber seat is matched with a lower pressing block arranged on the inner side of the opening at the bottom of the air bag through a second screw to realize sealing and fixed connection. According to the scheme, the top opening of the air bag is clamped between the upper pressing block and the supporting seat formed at the bottom end of the piston and is fixed through the first screw matched with the threaded sleeve, so that the connection stability between the piston and the air bag is improved; through briquetting and air chamber seat down, with the bottom opening centre gripping of gasbag between the two and fixed through the first screw of second screw cooperation, improve the connection stability of air chamber seat between the gasbag.

Description

Air spring with stable structure

Technical Field

The utility model relates to an air spring technical field, in particular to stable in structure's air spring.

Background

The electric vibration table is used as a mechanical environment test device, is mainly used for verifying the quality of a product in a mechanical environment, and is widely applied to various fields such as national defense, aviation, aerospace, communication, electronics, automobiles, household appliances and the like along with the continuous improvement of requirements of people on the quality of the product. At present, the maximum stroke of a conventional vibration test bed is 50mm, and the maximum speed is 2m/s. However, for some special occasions, such as verifying the functional and structural integrity of equipment on or in a carrier-based aircraft when bearing catapult take-off and arresting landing impacts, it is concluded that the catapult take-off and arresting landing impacts have the characteristics of transient state, alternation, low frequency, large displacement, high speed and the like, the maximum displacement of the electric vibration table is required to be 400mm, the maximum speed is required to be 6.5m/s, and the current common electric vibration table cannot meet the use requirements at all. For the vibrating table with large displacement, the currently adopted bearing mode is an air spring superposition mode. The fixing mode of the traditional air spring is that two screws on two sides are fixed, or a stud in the middle is fixed, so that the traditional air spring cannot be well fixed and firm in the using process, and in addition, the stability cannot be guaranteed in the matching use.

Therefore, in order to solve the above problems, it is necessary to design a stable air spring.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to provide an air spring with stable structure.

In order to achieve the above objects and other related objects, the present invention provides a technical solution: an air spring with a stable structure comprises a piston, an air bag and an air chamber seat, wherein the piston is connected to an opening at the top of the air bag in a sealing manner, the air chamber seat is connected to an opening at the bottom of the air bag in a sealing manner, and the piston, the air bag and the air chamber seat form a closed cavity together;

the piston is matched with an upper pressing block arranged on the inner side of the top opening of the air bag through a threaded sleeve arranged at the bottom of the piston and is fixedly connected with the upper pressing block through a first screw in a sealing mode; the air chamber seat is matched with a lower pressing block arranged on the inner side of the opening at the bottom of the air bag through a second screw to realize sealed fixed connection.

The preferable technical scheme is as follows: the piston is of a rod-shaped structure, a disc-shaped supporting seat is formed at the bottom end of the piston, a sinking groove is formed in the center of the bottom of the supporting seat, and the threaded sleeve is embedded in the sinking groove.

The preferable technical scheme is as follows: the top opening edge of gasbag extends inwards and forms first annular protruding stupefied, the bottom opening edge of gasbag extends inwards and forms the annular protruding stupefied of second.

The preferable technical scheme is as follows: the upper pressing block is of a stepped column structure and is provided with a first through hole for a first screw to penetrate through along the axis, the upper pressing block comprises a large-diameter section and a small-diameter section, the outer diameter of the small-diameter section of the upper pressing block is matched with the inner diameter of the top opening of the air bag, a first annular groove is formed in the step surface between the large-diameter section and the small-diameter section of the upper pressing block, and the first annular groove is matched with the first annular convex ridge.

The preferable technical scheme is as follows: the lower pressing block is of a step column structure and is provided with a first vent hole along the axis, the lower pressing block comprises a large-diameter section and a small-diameter section, the outer diameter of the small-diameter section of the lower pressing block is matched with the inner diameter of the bottom opening of the air bag, a second annular groove is formed in the step surface between the large-diameter section and the small-diameter section of the lower pressing block, and the second annular groove is matched with the second annular convex ridge.

The preferable technical scheme is as follows: the step surface between the large-diameter section and the small-diameter section of the lower pressing block is also provided with a plurality of first screw holes which are arranged at equal angles, and the first screw holes are arranged on the inner side of the second annular groove.

The preferable technical scheme is as follows: the air chamber seat comprises a shell and an apron, wherein the top of the shell is provided with a second vent hole corresponding to the first vent hole, the bottom of the shell is provided with an opening matched with the apron, the bottom of the shell is provided with a sealing ring mounting groove in the peripheral side of the opening, and a sealing ring is embedded in the sealing ring mounting groove.

The preferable technical scheme is as follows: the top of the shell is provided with a second through hole for a second screw to penetrate through on the periphery of the second through hole, and the second through hole and the first screw hole are correspondingly arranged.

The preferable technical scheme is as follows: the cover plate is fixedly connected with the shell through a third screw.

The preferable technical scheme is as follows: the casing bottom in the week side of sealing washer mounting groove is equipped with the second screw, be equipped with the third through-hole that supplies the third screw to pass through on the apron, the third through-hole with the second screw is corresponding to be arranged.

Because of the application of the technical scheme, the utility model discloses the beneficial effect who has does:

1. the utility model provides a pair of stable in structure's air spring, its supporting seat through last briquetting and piston bottom end formation is fixed the open-top centre gripping of gasbag between the two and through first screw cooperation swivel nut, has improved the stability of being connected between piston and the gasbag.

2. The utility model provides a pair of stable in structure's air spring, it is fixed through the first screw of second screw cooperation with the bottom opening centre gripping of gasbag between the two through briquetting and air chamber seat down, has improved the connection stability of air chamber seat between the gasbag.

Drawings

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

In the above drawings, 1, a piston; 11. a supporting seat; 2. an air bag; 21. a first annular ridge; 22. a second annular ridge; 3. an air chamber seat; 31. a housing; 311. a second vent hole; 312. a second through hole; 313. a second screw hole; 32. a cover plate; 321. a third through hole; 4. a threaded sleeve; 5. pressing the blocks; 51. a first through hole; 52. a first annular groove; 6. a first screw; 7. a second screw; 8. pressing a block; 81. a first vent hole; 82. a second annular groove; 83. a first screw hole; 9. a seal ring; 10. and a third screw.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1, the utility model provides an air spring with stable structure.

The air spring comprises a piston 1, an air bag 2 and a chamber seat 3. Wherein, the piston 1 is connected with the top opening of the air bag 2 in a sealing way, and the air chamber seat 3 is connected with the bottom opening of the air bag 2 in a sealing way. The piston 1, the air bag 2 and the air chamber seat 3 form a closed cavity together.

The piston 1 is matched with an upper pressing block 5 and a first screw 6 which are arranged on the inner side of the top opening of the air bag 2 through a threaded sleeve 4 arranged at the bottom of the piston to realize sealed fixed connection; the air chamber seat 3 is matched with a lower pressing block 8 arranged on the inner side of the bottom opening of the air bag 2 through a second screw 7 to realize sealing and fixed connection.

Specifically, the piston 1 is a rod-shaped structure and a disc-shaped support seat 11 is formed at the bottom end of the piston 1, and the disc-shaped support seat 11 can increase the contact area between the piston rod 1 and the airbag 2, so as to provide a better support effect for the piston 1. A sinking groove (not shown) is formed at the bottom center position of the supporting seat 11, and the threaded sleeve 4 is embedded in the sinking groove and fixed by welding.

The top opening edge of the air bag 2 extends inwards to form a first annular convex edge 21, and the bottom opening edge of the air bag 2 extends inwards to form a second annular convex edge 22.

Go up briquetting 5 for the step post structure and be equipped with the first through-hole 51 that supplies first screw 6 to wear to establish along the axis, go up briquetting 5 and include major diameter section and minor diameter section, go up the minor diameter section external diameter of briquetting 5 and agree with the open-top internal diameter of gasbag 2, go up and be formed with first annular groove 52 on the step face between 5 major diameter sections of briquetting and the minor diameter section, first annular groove 52 agrees with first annular protruding stupefied 21. Under the installation state, go up the path section of briquetting 5 and inlay in locating the open-top of gasbag 2, and first annular protruding stupefied 21 inlays simultaneously and locates and form the joint in first annular groove 52, improved the connection stability between gasbag 2 and the last briquetting 5. During assembly, the small-diameter section of the upper pressing block 5 is embedded in the top opening of the air bag 2, the first annular convex edge 21 is embedded in the first annular groove 52, then the piston 1 is vertically arranged at the top opening of the air bag 2, and the thread sleeve 4 is vertically corresponding to the first through hole 51; then, the first screw 6 is passed through the first through hole 51 and screwed into the screw boss 4.

Lower briquetting 8 is the step post structure and is equipped with first air vent 81 along the axis, and lower briquetting 8 includes major diameter section and path section, and the path section external diameter of lower briquetting agrees with the bottom opening internal diameter of gasbag 2, is formed with the annular recess 82 of second on the step face between 8 major diameter sections of lower briquetting and the path section, and the annular recess 82 of second agrees with the annular stupefied 22 of second. Under the installation state, the path section of briquetting 8 inlays down and locates in the bottom opening of gasbag 2, and the protruding stupefied 22 of second annular inlays simultaneously and locates and form the joint in the annular recess 82 of second, has improved the connection stability between gasbag 2 and the briquetting 8 down.

The step surface between the large-diameter section and the small-diameter section of the lower pressing block 8 is also provided with a plurality of first screw holes 83 which are arranged at equal angles, and the first screw holes 83 are arranged on the inner side of the second annular groove 82, so that the contact with the air bag 2 can be avoided, and air leakage is prevented.

The air chamber base 3 comprises a shell 31 and a cover plate 32, and a second vent hole 311 corresponding to the first vent hole 81 is arranged at the top of the shell 31 so that the air bag 2 is communicated with the cavity in the air chamber base 3. An opening matched with the cover plate 32 is formed at the bottom of the shell 31, a sealing ring mounting groove (not shown) is formed at the bottom of the shell 31 and on the periphery of the opening, and a sealing ring 9 is embedded in the sealing ring mounting groove to improve the sealing performance of the cavity in the air chamber seat 3.

A second through hole 312 for a second screw to pass through 7 is formed at the top of the housing 31 and around the second through hole 311, and the second through hole 312 and the first screw hole 83 are correspondingly arranged. When assembling, the second screw 7 passes through the second through hole 312 and is screwed into the first screw hole 83 to clamp the airbag 2, so as to realize the sealed and fixed connection between the airbag 2 and the air chamber seat 3.

The cover plate 32 and the housing 31 are fixedly connected by a third screw 10. The bottom of the housing 31 and the periphery of the sealing ring mounting groove are provided with second screw holes 313, the cover plate 32 is provided with third through holes 321 for passing third screws 10, and the third through holes 321 and the second screw holes 313 are correspondingly arranged. When assembled, the third screw 10 passes through the third through hole 321 and is screwed into the second screw hole 313 to clamp the sealing ring 9, so as to achieve a sealed and fixed connection between the cover plate 32 and the housing 31.

Therefore, the utility model has the advantages of it is following:

2. The utility model provides a pair of stable in structure's air spring, it is through briquetting and air chamber seat down, with the bottom opening centre gripping of gasbag between the two and fixed through the first screw of second screw cooperation, improved the connection stability of air chamber seat between the gasbag.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A structurally stable air spring characterized by: the piston is connected to the top opening of the air bag in a sealing mode, the air chamber seat is connected to the bottom opening of the air bag in a sealing mode, and the piston, the air bag and the air chamber seat form a closed cavity together;

the piston is matched with an upper pressing block arranged on the inner side of the top opening of the air bag through a threaded sleeve arranged at the bottom of the piston and is fixedly connected with the upper pressing block through a first screw in a sealing mode; the air chamber seat is matched with a lower pressing block arranged on the inner side of the opening at the bottom of the air bag through a second screw to realize sealing and fixed connection.

2. A structurally stabilized air spring according to claim 1, wherein: the piston is of a rod-shaped structure, a disc-shaped supporting seat is formed at the bottom end of the piston, a sinking groove is formed in the center of the bottom of the supporting seat, and the threaded sleeve is embedded in the sinking groove.

3. A structurally stabilized air spring according to claim 2, wherein: the top opening edge of gasbag extends inwards and forms first annular protruding stupefied, the bottom opening edge of gasbag extends inwards and forms the annular protruding stupefied of second.

4. A structurally stabilized air spring according to claim 3, wherein: the upper pressing block is of a stepped column structure and is provided with a first through hole for a first screw to penetrate through along the axis, the upper pressing block comprises a large-diameter section and a small-diameter section, the outer diameter of the small-diameter section of the upper pressing block is matched with the inner diameter of the top opening of the air bag, a first annular groove is formed in the step surface between the large-diameter section and the small-diameter section of the upper pressing block, and the first annular groove is matched with the first annular convex ridge.

5. A structurally stabilized air spring according to claim 4, wherein: the lower pressing block is of a step column structure and is provided with a first vent hole along the axis, the lower pressing block comprises a large-diameter section and a small-diameter section, the outer diameter of the small-diameter section of the lower pressing block is matched with the inner diameter of the bottom opening of the air bag, a second annular groove is formed in the step surface between the large-diameter section and the small-diameter section of the lower pressing block, and the second annular groove is matched with the second annular convex ridge.

6. A structurally stabilized air spring according to claim 5, wherein: the step surface between the large-diameter section and the small-diameter section of the lower pressing block is also provided with a plurality of first screw holes which are arranged at equal angles, and the first screw holes are formed in the inner side of the second annular groove.

7. A structurally stabilized air spring according to claim 6, wherein: the air chamber seat comprises a shell and an apron, wherein the top of the shell is provided with a second vent hole corresponding to the first vent hole, the bottom of the shell is provided with an opening matched with the apron, the bottom of the shell is provided with a sealing ring mounting groove in the peripheral side of the opening, and a sealing ring is embedded in the sealing ring mounting groove.

8. A structurally stabilized air spring according to claim 7, wherein: the top of the shell is provided with second through holes for the second screws to penetrate through, and the second through holes and the first screw holes are correspondingly arranged.

9. A structurally stabilized air spring according to claim 8, wherein: the cover plate is fixedly connected with the shell through a third screw.

10. A structurally stabilized air spring according to claim 9, wherein: the casing bottom in the week side of sealing washer mounting groove is equipped with the second screw, be equipped with the third through-hole that supplies the third screw to pass through on the apron, the third through-hole with the second screw is corresponding to be arranged.