CN222185605U - A low-cost passive air shock absorber - Google Patents
A low-cost passive air shock absorber Download PDFInfo
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- CN222185605U CN222185605U CN202223140626.1U CN202223140626U CN222185605U CN 222185605 U CN222185605 U CN 222185605U CN 202223140626 U CN202223140626 U CN 202223140626U CN 222185605 U CN222185605 U CN 222185605U
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- 230000035939 shock Effects 0.000 title claims description 12
- 239000006096 absorbing agent Substances 0.000 title claims description 7
- 238000013016 damping Methods 0.000 claims abstract description 29
- 229910001369 Brass Inorganic materials 0.000 claims description 17
- 239000010951 brass Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a low-cost passive air damper, which relates to the technical field of dampers and comprises a fixed cylinder and a telescopic cylinder nested in the fixed cylinder, wherein the outer side end surfaces of the fixed cylinder and the telescopic cylinder are respectively an upper end cover and a lower end cover, a damping spring is arranged on the inner wall of the lower end cover, an inner slide rod perpendicular to the inner wall of the upper end cover is arranged on the inner wall of the upper end cover in a centering manner, the telescopic cylinder is sleeved on an inner slide rod in a sliding manner, the inner slide rod is of a sectional structure and comprises a rod body and a fixed plate, the rod body is connected between the inner wall of the upper end cover and the inner side end surface of the fixed plate, the fixed plate is clamped in the telescopic cylinder, the outer side end surface of the fixed plate is connected with the damping spring, and a recoil spring is connected between the inner side end surface of the inner side of the locating plate and the inner end wall of the telescopic cylinder. The utility model can realize the anti-collision effect of the telescopic cylinder and the fixed cylinder on the air damper by arranging the anti-collision effect of the recoil spring in the air damper.
Description
Technical Field
The utility model relates to the technical field of shock absorbers, in particular to a low-cost passive air shock absorber.
Background
The air damper is a damper for damping through compressed air, has the advantages of low noise, long service life and the like, and is widely applied. Because the air damper is damped and buffered through compressed air during operation, oil injection is not needed, and the risk of oil leakage is avoided.
When mechanical equipment is prevented by the aid of springs, the air shock absorber in the prior art is generally lack of a better rebound prevention structural design, so that the telescopic cylinder and the fixed cylinder are mutually installed when the shock absorbing springs are stretched in the large-amplitude shock absorbing process, and structural connection of the air shock absorber is unstable.
Disclosure of utility model
The utility model provides a low-cost passive air damper, which aims to solve the problem that the impact force between a telescopic cylinder and a fixed cylinder is overlarge when the air damper is elastically extended.
The utility model is realized by the following technical scheme:
A low-cost passive air shock absorber comprises a fixed cylinder and a telescopic cylinder which is nested in the fixed cylinder, wherein the outer side end faces of the fixed cylinder and the telescopic cylinder are respectively an upper end cover and a lower end cover, a shock absorption spring is arranged on the inner wall of the lower end cover, an inner slide rod which is perpendicular to the inner wall of the upper end cover is arranged on the inner wall of the upper end cover in a centered manner, the telescopic cylinder is sleeved on an inner slide rod in a slidable manner, the inner slide rod is of a sectional structure and comprises a rod body and a fixed plate, the rod body is connected between the inner wall of the upper end cover and the inner side end face of the fixed plate, the fixed plate is clamped in the telescopic cylinder, the outer side end face of the fixed plate is connected with the shock absorption spring, and a recoil spring is connected between the inner side end face of the fixed plate and the inner end wall of the telescopic cylinder.
Specifically, the telescopic cylinder is nested to be arranged in the fixed cylinder, namely one end of the fixed cylinder is sealed through the upper end cover, and the other end of the fixed cylinder is provided with an opening for the telescopic cylinder to move. One exposed end of the telescopic cylinder is sealed through the lower end cover, the other end of the telescopic cylinder is positioned in the fixed cylinder, and an air cavity is formed by a cavity between the other end of the telescopic cylinder and the upper end cover. One end of the inner slide bar is fixed on the inner wall of the upper end cover, the other end of the inner slide bar is clamped in the end part of the telescopic tube positioned in the fixed tube, namely, the end part of the telescopic tube positioned in the fixed tube is reserved with a part of end face structure, and meanwhile, the telescopic tube can stretch and slide when being sleeved on the inner slide bar. The inner slide rod comprises a rod body and a fixing plate, the rod body is connected between the inner side end face of the fixing plate and the inner wall of the upper end cover, and the inner slide rod is T-shaped in side view section. One end of the damping spring is connected to the inner wall of the lower end cover, and the other end of the damping spring is connected with the outer end face of the fixing plate. The damping spring provides a basic elastic damping effect for the damper. One end of the recoil spring is arranged on the inner side end face of the fixed plate, and the other end of the recoil spring is connected with the inner wall of the end part of the telescopic cylinder, which is positioned in the fixed cylinder, on the telescopic cylinder. The recoil spring is used for compressing after jolting when the damping spring is subjected to compression, and then when the force is unloaded to the shrinkage elasticity, the length of the damping spring is extended, the telescopic cylinder is driven to extend outwards from the fixed cylinder, at the moment, the fixed plate at the end part of the inner part of the fixed cylinder, which is positioned on the telescopic cylinder, can be quickly closed, at the moment, the recoil spring can compress to slow down the extension rate of the telescopic cylinder, and the kinetic energy generated when the telescopic cylinder extends can be obviously reduced, so that the problem that the impact force of the telescopic cylinder and the fixed cylinder is overlarge when the air damper is elastically extended is avoided.
Further, the novel sliding rod further comprises a plurality of stop springs arranged on the inner wall of the upper end cover, and the stop springs are uniformly distributed around the inner sliding rod. When the pressure from outside is greater than the pressure of damping spring plus air compression, the elasticity supporting effect of stopping spring can be used for preventing the terminal surface that the telescopic tube is located the fixed section of thick bamboo and the inner wall of upper end cover from taking place to strike to the risk that the fixed section of thick bamboo upper end cover was damaged because of striking has been reduced.
The sealing device comprises a telescopic cylinder, a fixed plate, a sealing rubber ring, a fixing plate and a fixing plate, wherein the telescopic cylinder is arranged on the outer wall of the telescopic cylinder and is attached to the inner wall of the fixed cylinder, the fixed plate is arranged on the side wall of the fixed plate and is attached to the inner wall of the telescopic cylinder, the sealing rubber ring is arranged in the telescopic cylinder and is attached to the outer wall of the fixed plate, and the fixing plate is arranged on the side wall of the fixed plate and is attached to the inner wall of the telescopic cylinder. The sealing rubber ring is arranged between each pair of relatively sliding parts, after the air damper is subjected to vibration jolt, the damping spring drives the telescopic cylinder to stretch and slide in the fixed cylinder through elastic compression and elastic extension, at the moment, the outer wall of the telescopic cylinder and the inner wall of the fixed cylinder, the inner wall of one end of the telescopic cylinder positioned in the fixed cylinder, the outer wall of the rod body, the side wall of the fixed plate and the inner wall of the telescopic cylinder all have relative sliding, and the sealing rubber ring can be arranged when the air damper works, after the air damper is continuously pressed in an air cavity, the telescopic speed and the amplitude of the telescopic cylinder in the fixed cylinder are slowed down by utilizing the slow air leakage effect of the sealing rubber ring, so that the damping and vibration reducing effects are realized.
Further, the novel brass sliding device also comprises a plurality of brass sliding cylinders, wherein the brass sliding cylinders are equally divided into two groups, and the two groups of brass sliding cylinders are respectively arranged on the inner walls of the two ends of the inside of the fixed cylinder. The brass sliding cylinder is arranged on the inner side wall of the fixed cylinder and is positioned between the inner wall of the fixed cylinder and the outer wall of the telescopic cylinder when in use, and the smooth characteristic of the brass sliding cylinder is used for preventing the fixed cylinder and the telescopic cylinder from abnormal abrasion.
Further, the outer side wall of the fixed cylinder is provided with a mounting lug with a screw hole. The mounting lugs are used for fixing the whole air damper, and the mounting use scene of the air damper can be increased by using the form of the mounting lugs so as to adapt to the use range of more fields.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. An inner slide bar is arranged in the fixed cylinder, and a damping spring and a recoil spring are respectively arranged on the outer side end face and the inner side end face of the end part of the inner slide bar to respectively play roles in damping and anti-collision, so that the anti-collision effect of the telescopic cylinder and the fixed cylinder on the air damper can be realized;
2. a sealing rubber ring is arranged between each pair of relatively sliding parts, so that the damping effect can be realized;
3. the stop spring is arranged on the inner wall of the upper end cover, so that the end part of the telescopic cylinder can be prevented from directly colliding with the upper end cover.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic view of the structure of the telescopic cylinder of the present utility model after extension;
FIG. 2 is a schematic view of the telescopic cylinder according to the present utility model after being contracted;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 1;
FIG. 4 is a schematic view of the structure of the inner slide bar of the present utility model;
In the drawings, the reference numerals and corresponding part names:
The novel anti-collision device comprises a 1-fixed cylinder, an 11-upper end cover, a 2-telescopic cylinder, a 21-lower end cover, a 3-inner slide rod, a 31-fixed plate, a 32-rod body, a 33-fixed screw, a 4-damping spring, a 41-stop spring, a 42-recoil spring, a 5-outer cylinder rubber ring, a 51-rod body rubber ring, a 52-fixed plate rubber ring, a 6-brass slide cylinder and 7-mounting lugs.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Examples
As shown in fig. 1-4, the low-cost passive air damper comprises a fixed cylinder 1 and a telescopic cylinder 2 nested in the fixed cylinder 1, wherein the outer end faces of the fixed cylinder 1 and the telescopic cylinder 2 are respectively an upper end cover 11 and a lower end cover 21, a damping spring 4 is arranged on the inner wall of the lower end cover 21, an inner sliding rod 3 is vertically arranged on the inner wall of the upper end cover 11 in a centered manner and is fixed with the inner wall of the upper end cover 11 through a fixing screw 33, the telescopic cylinder 2 is sleeved on the inner sliding rod 3 in a sliding manner, the inner sliding rod 3 is of a sectional structure and comprises a rod body 32 and a fixing plate 31, the rod body 32 is connected between the inner wall of the upper end cover 11 and the inner end face of the fixing plate 31, the fixing plate 31 is clamped in the telescopic cylinder 2, the outer end face of the fixing plate 31 is connected with the damping spring 4, and a recoil spring 42 is connected between the inner end face of the inner side of the fixing plate 31 and the inner end wall of the telescopic cylinder 2.
When the telescopic cylinder 2 is used, the cavity between one end of the inner part 1 of the fixed cylinder 1 and the inner wall of the upper end cover 11 forms an air cavity, and the telescopic cylinder 2 is sleeved on the inner slide rod 3 and can perform telescopic sliding. The rod body 32 is connected between the inner end surface of the fixing plate 31 and the inner wall of the upper end cover 11, and the inner slide rod is T-shaped in side view. After the air damper is jounced, the damper spring 4 compresses, the telescopic cylinder 2 is retracted into the fixed cylinder 1, and the recoil spring 42 is stretched. Then when the air damper unloads the elastic force that damping spring 4 contracted again, the length of damping spring 4 is elongated, drive telescopic cylinder 2 outwards extend from fixed cylinder 1, the fixed plate 31 that is located the inside one end of fixed cylinder 1 can inwards slide bar 3 tip on the telescopic cylinder 2 draws close fast this moment, recoil spring 42 is through the elastic force shrink back this moment, recoil spring 42 has thrust effect to the inside one end of fixed cylinder 1 of telescopic cylinder 2, the effect that the telescopic cylinder 2 continues to extend is slowed down, kinetic energy that produces when can obviously reduce telescopic cylinder 2 extension, thereby make the air damper when carrying out elastic extension, avoided telescopic cylinder 2 and the too big problem of fixed cylinder 1 striking dynamics. The telescopic cylinder 2 is elastically pushed and pulled in two opposite directions through the damping spring 4 and the recoil spring 42, so that the air damper can be kept in a dynamic balance stressed state, and the use stability of the air damper is improved.
It should be noted that, since the damping spring 4 plays a main role in damping and buffering, and the recoil spring 42 plays a main role in auxiliary protection, in order to ensure the normal use of the air damper, in a specific application, the elastic effect of the damping spring 4 needs to be greater than that of the recoil spring 42. In order to make the stress more uniform, as a possible embodiment, it is preferable that the rod body 32 is attached to the center of the inner end surface of the fixing plate 31 and the recoil spring 42 is provided to the inner end surface of the fixing plate 31 in a manner surrounding the rod body 32 in practical implementation.
In the above embodiment, when the pressure from the outside is greater than the pressure of the damping spring 4 plus the air compression, the end surface of the telescopic cylinder 2 located in the fixed cylinder 1 is easy to collide with the inner wall of the upper end cover 11, so that the upper end cover 11 is at risk of being damaged due to the collision. Based on this, as shown in fig. 1-2, the sliding rod further comprises a plurality of stop springs 41 arranged on the inner wall of the upper end cover 11, and the plurality of stop springs 41 are uniformly distributed around the inner sliding rod 3. When the pressure from the outside is significantly large, the elastic supporting function of the stop spring 41 can be used for preventing the end face of the telescopic cylinder 2 positioned in the fixed cylinder 1 from colliding with the inner wall of the upper end cover 11, so that the risk of damaging the upper end cover of the fixed cylinder 1 due to collision is reduced.
Further, as a possible implementation manner, as shown in fig. 1-3, the telescopic device further comprises a sealing rubber ring, wherein the sealing rubber ring comprises an outer cylinder rubber ring 5, a rod body rubber ring 51 and a fixed plate rubber ring 52, the outer cylinder rubber ring 5 is arranged on the outer wall of the telescopic cylinder 2 and is attached to the inner side wall of the fixed cylinder 1, the rod body rubber ring 51 is arranged inside the telescopic cylinder 2 and is attached to the outer wall of the rod body 32, and the fixed plate rubber ring 52 is arranged on the side wall of the fixed plate 31 and is attached to the inner side wall of the telescopic cylinder 2. The sealing rubber ring is arranged between each pair of relatively sliding parts, after the air damper is subjected to vibration jolt, the damping spring 4 drives the telescopic cylinder 2 to carry out telescopic sliding on the fixed cylinder 1 through elastic compression and elastic extension, at the moment, the outer wall of the telescopic cylinder 2 and the inner wall of the fixed cylinder 1, the inner wall of one end of the telescopic cylinder 2 positioned inside the fixed cylinder 1 and the outer wall of the rod body 32, the side wall of the fixed plate 31 and the inner wall of the telescopic cylinder 2 are relatively sliding, and the sealing rubber ring is arranged, so that when the air damper works, after the air damper is continuously pressed in an air cavity, the telescopic speed and the amplitude of the telescopic cylinder 2 in the fixed cylinder 1 are slowed down by the slow air leakage effect of the sealing rubber ring, so that the damping and vibration absorption effects are realized. In particular, in order to make the damping effect achieved by the sealing rubber more uniform in distribution, it is preferable that the number of the outer cylinder rubber 5, the rod rubber 51 and the fixing plate rubber 52 is set to be plural as shown in fig. 1 to 3, and the outer cylinder rubber 5 is uniformly distributed on the outer wall of the telescopic cylinder 2 and the rod rubber 51 is uniformly distributed on the inner wall of the end part of the telescopic cylinder 2.
Further, as a possible implementation manner, as shown in fig. 1-3, the brass slide barrels 6 also comprise a plurality of brass slide barrels 6, wherein the brass slide barrels 6 are divided into two groups, and the two groups of brass slide barrels 6 are respectively arranged on the inner walls of two ends of the inside of the fixed barrel 1. The brass slide cylinder 6 is arranged on the inner side wall of the fixed cylinder 1, and is positioned between the inner wall of the fixed cylinder 1 and the outer wall of the telescopic cylinder 2 when in use, and the smooth characteristic of the brass slide cylinder 6 is used for playing a role in cushioning and protecting so as to prevent the fixed cylinder 1 and the telescopic cylinder 2 from abnormal abrasion.
Further, as a possible embodiment, as shown in fig. 1-2, a mounting lug 7 with a screw hole is provided on the outer side wall of the fixed cylinder 1. The mounting lugs 7 are used for fixing the whole air damper, and the mounting use scene of the air damper can be increased by using the form of the mounting lugs 7 so as to adapt to the use range of more fields.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (2)
1. The low-cost passive air shock absorber comprises a fixed cylinder (1) and a telescopic cylinder (2) nested in the fixed cylinder (1), and is characterized in that the outer side end surfaces of the fixed cylinder (1) and the telescopic cylinder (2) are respectively an upper end cover (11) and a lower end cover (21), a shock absorption spring (4) is arranged on the inner wall of the lower end cover (21), an inner slide rod (3) perpendicular to the inner wall of the upper end cover (11) is arranged on the inner wall of the upper end cover (11) in the middle, and the telescopic cylinder (2) is sleeved on the inner slide rod (3) in a sliding mode;
The inner sliding rod (3) is of a sectional structure and comprises a rod body (32) and a fixed plate (31), wherein the rod body (32) is connected between the inner wall of the upper end cover (11) and the inner side end surface of the fixed plate (31), the fixed plate (31) is clamped in the telescopic cylinder (2), the outer side end surface of the fixed plate (31) is connected with the damping spring (4), and a recoil spring (42) is connected between the inner side end surface of the fixed plate (31) and the inner wall of the end part of the telescopic cylinder (2);
The sliding rod also comprises a plurality of stop springs (41) arranged on the inner wall of the upper end cover (11), and the stop springs (41) are uniformly distributed around the inner sliding rod (3);
The sealing rubber ring comprises an outer cylinder rubber ring (5), a rod body rubber ring (51) and a fixed plate rubber ring (52);
The outer cylinder rubber ring (5) is arranged on the outer wall of the telescopic cylinder (2) and is attached to the inner side wall of the fixed cylinder (1);
the rod body rubber ring (51) is arranged in the telescopic cylinder (2) and is attached to the outer wall of the rod body (32);
The fixed plate rubber ring (52) is arranged on the side wall of the fixed plate (31) and is attached to the inner side wall of the telescopic cylinder (2);
The novel brass sliding device is characterized by further comprising a plurality of brass sliding cylinders (6), wherein the brass sliding cylinders (6) are equally divided into two groups, and the two groups of brass sliding cylinders (6) are respectively arranged on the inner walls of the two ends of the inside of the fixed cylinder (1).
2. A low cost passive air damper according to claim 1, wherein the outer side wall of the fixed cylinder (1) is provided with a mounting lug (7) with a screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223140626.1U CN222185605U (en) | 2022-11-25 | 2022-11-25 | A low-cost passive air shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223140626.1U CN222185605U (en) | 2022-11-25 | 2022-11-25 | A low-cost passive air shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222185605U true CN222185605U (en) | 2024-12-17 |
Family
ID=93840226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223140626.1U Active CN222185605U (en) | 2022-11-25 | 2022-11-25 | A low-cost passive air shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222185605U (en) |
-
2022
- 2022-11-25 CN CN202223140626.1U patent/CN222185605U/en active Active
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