CN204628401U - A kind of pneumatic damping buffer - Google Patents
A kind of pneumatic damping buffer Download PDFInfo
- Publication number
- CN204628401U CN204628401U CN201520337530.5U CN201520337530U CN204628401U CN 204628401 U CN204628401 U CN 204628401U CN 201520337530 U CN201520337530 U CN 201520337530U CN 204628401 U CN204628401 U CN 204628401U
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- piston
- cylinder body
- pull bar
- piston assembly
- pneumatic damping
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Abstract
The utility model discloses a kind of pneumatic damping buffer, described buffer comprises cylinder body (1), described buffer also comprises piston assembly (12) and pull bar (2), described piston assembly (12) is arranged on one end of pull bar (2), described piston assembly (12) is arranged in cylinder body (1) and the outer wall of described piston assembly (12) contacts with the inwall of cylinder body (1), and the inwall of described cylinder body (1) is provided with vent slot (11) along the length direction of described cylinder body (1).The utility model provides a kind of novel buffer structure, it have damping effect significantly, the feature of working stability and long service life.
Description
Technical field:
The utility model relates to buffer technology field, more specifically to the significant pneumatic damping buffer of a kind of damping effect.
Background technique:
Buffer is mainly used to suppress concussion when rebounding and impact, it mainly plays buffer function, less impact is with other structures in proterctive equipment, a large amount of buffer of the prior art is bumper, it mainly have employed the spring principle that Absorbable rod impacts in the process of compression to play the effect of buffering, the predominant use of spring buffer: blower fan, wind cabinet, air-conditioning box, air compressor, air-conditioner set, generator, the damping vibration-isolating of the equipment such as cooling tower, damper is adopted to establish if additional, then punch press can be applicable to, pressure, the isolating technique of the impingement equipment such as forging hammer machine.And the shortcoming of spring buffer is: 1. owing to there is the existing picture of self-vibration, easily transmit low-frequency vibration.2. damping is too little, and critical damping ratio generally only has 0.005, therefore can produce resonance phenomenon between device frequency zone of approach.3., because spring in use easily can be damaged due to fatigue, therefore its working condition neither be highly stable.
Model utility content:
The purpose of this utility model is just to provide a kind of pneumatic damping buffer, it provides a kind of novel buffer structure, it have damping effect significantly, the feature of working stability and long service life.
For achieving the above object, a kind of pneumatic damping buffer of the present utility model, described buffer comprises cylinder body, described buffer also comprises piston assembly and pull bar, described piston assembly is arranged on one end of pull bar, described piston assembly is arranged in cylinder body and the outer wall of described piston assembly contacts with the inwall of cylinder body, and the inwall of described cylinder body is provided with vent slot along the length direction of described cylinder body.
Preferred as technique scheme, described piston assembly comprises and increasing along with atmospheric pressure and the piston sleeve that expands, and the outer wall of described piston sleeve contacts with the inwall of cylinder body.
Preferred as technique scheme, described piston sleeve is the sleeve-like configuration of one end open, and described piston sleeve is obtained by elastic material.
Preferred as technique scheme, described piston assembly comprises and increasing along with atmospheric pressure and the piston ring that expands, and the outer wall of described piston ring contacts with the inwall of cylinder body.
Preferred as technique scheme, described piston assembly comprises upper piston and lower piston, described upper piston is connected with pull bar, and described piston sleeve and piston ring are arranged between upper piston and lower piston, and the endoporus on described piston sleeve, piston ring and lower piston is interconnected.
Preferred as technique scheme, one end of described cylinder body is provided with enclosing cover, the other end is provided with inner cap.
Preferred as technique scheme, the outlet port that described cylinder body is provided with inner cap one end is provided with seal ring, and described pull bar is connected with described piston assembly through described seal ring.
Preferred as technique scheme, one end of described pull bar is provided with draws cap, described in draw cap to be spherical away from one end of pull bar.
Preferred as technique scheme, described in draw cap and pull bar for being threaded, the cross section of described vent slot is square.
Preferred as technique scheme, the outer wall of described piston sleeve has and can improve contact performance sealing layer.
The beneficial effects of the utility model are: the utility model provides a kind of novel buffer structure, it have damping effect significantly, the feature of working stability and the long service life high life-span of machine tool guideway, rigidity and precision.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment
Fig. 2 is the operating diagram of the utility model embodiment
Fig. 3 is the operating diagram of the utility model embodiment.
In figure: 1, cylinder body; 2, pull bar; 3, seal ring; 4, cap is drawn; 5, piston sleeve; 6, sealing layer; 7, enclosing cover; 8, piston ring; 9, lower piston; 10, upper piston; 11, vent slot; 12, piston assembly; 13, inner cap.
Embodiment:
The following stated is only the preferred embodiment embodying the utility model principle, does not therefore limit protection domain of the present utility model
Embodiment: the embodiment being illustrated in figure 1 a kind of pneumatic damping buffer of the utility model, described buffer comprises cylinder body 1, the cross section of this cylinder body 1 can be any regular shape, specific in the present embodiment, this cylinder body 1 is cylindric, and the cylinder body 1 of this cylindrical shape can need meet requirement of strength definitely by wall thickness, more particularly this cylinder body 1 can be obtained by alloyed steel or high strength hard plastics, described buffer also comprises piston assembly 12 and pull bar 2, described pull bar 2 can be obtained by metallic material, and the cross section of pull bar 2 in the present embodiment is circular, described piston assembly 12 is arranged on one end of pull bar 2, described piston assembly 12 is arranged in cylinder body 1 and the outer wall of described piston assembly 12 contacts with the inwall of cylinder body 1, the inwall of described cylinder body 1 is provided with vent slot 11 along the length direction of described cylinder body 1, the side of this vent slot 11 is open state, and the axis being parallel of vent slot 11 and cylinder body 1 and communicating with the inner chamber of cylinder body 1, the cross section of vent slot 11 can be any regular shape, specific in the present embodiment, the cross section of vent slot 11 is square, in addition, vent slot 11 can by the cast molding of cylinder body 1 one, also have, the position demand fulfillment requirement definitely of the vent slot 11 in the present embodiment, one end that pull bar 2 enters cylinder body 1 is first end, cylinder body is the second end away from other one end of this first end, near first end in described vent slot 11 two ends is the 3rd end, the other end is the 4th end, between described first end and the 3rd end, there is certain distance, this distance need be not less than the length of piston assembly 12, and the second end can align with the 4th end.
In addition, in the present embodiment, piston assembly 12 comprises along with atmospheric pressure increases and the piston sleeve 5 of expansion, the outer wall of described piston sleeve 5 contacts with the inwall of cylinder body 1, piston sleeve 5 is the sleeve-like configuration of one end open, described piston sleeve 5 is obtained by elastic material, more particularly this piston sleeve 5 can be obtained by elastic plastic material, when pressure increases ground, pressure force makes whole piston sleeve 5 spreading in the inwall of piston sleeve 5 thus the pressure between the outer wall of piston sleeve 5 and the inwall of cylinder body 1 is increased, thus damping force can be made to increase.
Piston assembly 12 comprises along with atmospheric pressure increases and the piston ring 8 of expansion, this piston ring 8 is for having certain thickness ring bodies, this piston ring 8 can be obtained by elastic plastic material, the working principle of this piston ring 8 is the same with the working principle of piston sleeve 5, also namely when increasing ground at pressure, pressure force makes whole piston ring 8 spreading thus the pressure between the outer wall of piston ring 8 and the inwall of cylinder body 1 is increased on the inwall of piston ring 8, thus damping force can be made to increase, the outer wall of this piston ring 8 contacts with the inwall of cylinder body 1, and piston ring 8 and piston sleeve 5 can be formed in one and also piston ring 8 can be fixed on piston sleeve 5 in the present embodiment.
Also have, piston assembly 12 in the present embodiment also comprises upper piston 10 and lower piston 9, specifically, upper piston 10 is for physical components and lower piston 9 is hollow part, described upper piston 10 is connected with pull bar 2, piston 10 can for any mounting type be as welded or being threaded with pull bar 2, described piston sleeve 5 and piston ring 8 are arranged between upper piston 10 and lower piston 9, described piston sleeve 5, endoporus on piston ring 8 and lower piston 9 is interconnected, when work, air enter from the mesopore of lower piston 9 and active force in piston sleeve 5, on the inwall of piston ring 8, and in the present embodiment, piston sleeve 5, piston ring 8, the shape of upper piston 10 and lower piston 9 and the endoporus of cylinder body 1 cooperatively interact.
In the present embodiment, one end of cylinder body 1 is provided with enclosing cover 7, the other end is provided with inner cap 13, cylinder body 1, semi-enclosed interior space between enclosing cover 7 and inner cap 13 three, can be formed, and enclosing cover 7 in the present embodiment is stepped, more particularly enclosing cover 7 shutoff is at the open rearward end place of cylinder body 1, and it is external, and inner cap 13 is then arranged on the front opening place of cylinder body 1, this inner cap 13 is in built-in, and the front opening of cylinder body 1 is reducing shape.
In order to improve the sealability of cylinder body 1 in the present embodiment, the outlet port being provided with inner cap 13 one end at cylinder body 1 is provided with seal ring 3, described pull bar 2 is connected with described piston assembly 12 through described seal ring 3, in order to reduce the frictional force between pull bar 2 and seal ring 3, need the surface of contact between pull bar 2 and seal ring 3 arranges lubrication, specifically can be coated with on both surface of contact and be covered with butter, butter both can play lubrication, but also can eliminate the unlikely sealing affecting cylinder body 1 in gap between pull bar 2 and seal ring 3.
In the present embodiment, pull bar 2 is provided with away from one end of cylinder body 1 and draws cap 4, the effect of cap 4 is drawn to be to facilitate it to be connected with other impact part, and in the present embodiment, draw cap 4 to be spherical away from one end of pull bar 2, cap 4 is drawn to have cast molding, and draw cap 4 to be spherical can conveniently connection away from one end of pull bar 2, be easy to realize universal joint connect, and draw cap 4 also more various with the Placement of pull bar 2, draw cap 4 and pull bar 2 more particularly in the present embodiment adopt thread connecting mode, mainly conveniently dismantle.
The outer wall of piston sleeve 5 has and can improve contact performance sealing layer 6, sealing layer 6 is obtained by soft plastic, it can be fixed on the outer surface of piston sleeve 5 by bonding way, the contact performance between piston sleeve 5 outer wall and cylinder 1 inwall can be improved at this, thus raising sealability, prevent the space being positioned at piston assembly 12 both sides from being leaked gas by the mode beyond vent slot 11, castering action can be played to damping performance, also have and cause the contact performance between improving second together with the wearing and tearing of piston assembly 12 in order to prevent from rubbing between piston assembly 12 with cylinder body 1, the smoothness of the present embodiment to cylinder body 1 inwall need reach requirement.
As shown in Figure 2, when piston assembly 12 in the present embodiment moves from the bottom to the top along the direction of arrow, the chamber be now positioned at below piston assembly 12 is in vacuum state, and the Distance Shortened between piston sleeve 5 and piston ring 8, at active force lower piston cover 5 and piston ring 8 spreading and be closely attached on the inwall of cylinder body 1 of air pressure, the pressure difference being now positioned at chamber above and below piston assembly 12 is maximum, piston sleeve 5 and the pressure between piston ring 8 and cylinder body 1 inwall are maximum, its frictional force is also maximum value, therefore now the damping force of piston assembly 12 is maximum value, when piston assembly 12 slowly moves to vent slot 11 time, the air being positioned at piston assembly 12 upper chambers enters the chamber of below, in the process, above and below pressure difference between chamber reduce, and piston sleeve 5 and the pressure between piston ring 8 and cylinder body 1 inwall also less, correspondingly its piston sleeve 5 and the frictional force between piston ring 8 and cylinder body 1 inwall reduce, until piston assembly 12 moves to topmost, now the pressure of piston assembly 12 upper chambers is zero, correspondingly damping force is also zero.
Be illustrated in figure 3 piston assembly 12 downward end motion along the direction of arrow from upper end, this movement process is the reversing motion process shown in Fig. 2, and damping force situation suffered in this movement process is just contrary with damping force suffered in movement process shown in Fig. 2.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (10)
1. a pneumatic damping buffer, described buffer comprises cylinder body (1), it is characterized in that, described buffer also comprises piston assembly (12) and pull bar (2), described piston assembly (12) is arranged on one end of pull bar (2), described piston assembly (12) is arranged in cylinder body (1) and the outer wall of described piston assembly (12) contacts with the inwall of cylinder body (1), and the inwall of described cylinder body (1) is provided with vent slot (11) along the length direction of described cylinder body (1).
2. a kind of pneumatic damping buffer according to claim 1, it is characterized in that, described piston assembly (12) comprises along with atmospheric pressure increases and the piston sleeve (5) of expansion, and the outer wall of described piston sleeve (5) contacts with the inwall of cylinder body (1).
3. a kind of pneumatic damping buffer according to claim 2, is characterized in that, the sleeve-like configuration that described piston sleeve (5) is one end open, and described piston sleeve (5) is obtained by elastic material.
4. a kind of pneumatic damping buffer according to claim 3, it is characterized in that, described piston assembly (12) comprises along with atmospheric pressure increases and the piston ring (8) of expansion, and the outer wall of described piston ring (8) contacts with the inwall of cylinder body (1).
5. a kind of pneumatic damping buffer according to claim 4, it is characterized in that, described piston assembly (12) comprises upper piston (10) and lower piston (9), described upper piston (10) is connected with pull bar (2), described piston sleeve (5) and piston ring (8) are arranged between upper piston (10) and lower piston (9), and the endoporus on described piston sleeve (5), piston ring (8) and lower piston (9) is interconnected.
6. a kind of pneumatic damping buffer according to claim 1, is characterized in that, one end of described cylinder body (1) is provided with enclosing cover (7), the other end is provided with inner cap (13).
7. a kind of pneumatic damping buffer according to claim 1, it is characterized in that, the outlet port that described cylinder body (1) is provided with inner cap (13) one end is provided with seal ring (3), and described pull bar (2) is connected with described piston assembly (12) through described seal ring (3).
8. a kind of pneumatic damping buffer according to claim 1, is characterized in that, one end of described pull bar (2) is provided with draws cap (4), described in draw cap (4) to be spherical away from one end of pull bar (2).
9. a kind of pneumatic damping buffer according to claim 8, is characterized in that, described in draw cap (4) and pull bar (2) for being threaded, the cross section of described vent slot (11) is square.
10. a kind of pneumatic damping buffer according to claim 3, is characterized in that, the outer wall of described piston sleeve (5) has and can improve contact performance sealing layer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520337530.5U CN204628401U (en) | 2015-05-20 | 2015-05-20 | A kind of pneumatic damping buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520337530.5U CN204628401U (en) | 2015-05-20 | 2015-05-20 | A kind of pneumatic damping buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204628401U true CN204628401U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520337530.5U Expired - Fee Related CN204628401U (en) | 2015-05-20 | 2015-05-20 | A kind of pneumatic damping buffer |
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| Country | Link |
|---|---|
| CN (1) | CN204628401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668064A (en) * | 2017-10-13 | 2019-04-23 | 深圳市海洋王照明工程有限公司 | Flashlight |
-
2015
- 2015-05-20 CN CN201520337530.5U patent/CN204628401U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668064A (en) * | 2017-10-13 | 2019-04-23 | 深圳市海洋王照明工程有限公司 | Flashlight |
| CN109668064B (en) * | 2017-10-13 | 2020-08-07 | 深圳市海洋王照明工程有限公司 | Electric torch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160520 |