CN202789822U - Self-lock cylinder - Google Patents
Self-lock cylinder Download PDFInfo
- Publication number
- CN202789822U CN202789822U CN 201220294874 CN201220294874U CN202789822U CN 202789822 U CN202789822 U CN 202789822U CN 201220294874 CN201220294874 CN 201220294874 CN 201220294874 U CN201220294874 U CN 201220294874U CN 202789822 U CN202789822 U CN 202789822U
- Authority
- CN
- China
- Prior art keywords
- self
- screw
- piston
- air cylinder
- fitting seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a self-lock cylinder, and aims at providing the self-lock cylinder which is provided with a locking device on a rear cover of the cylinder. The self-lock cylinder comprises a cylinder body and a piston rod, wherein a front cover is arranged at the front end of the cylinder body, the rear cover is arranged at the rear end of the cylinder body, a blind hole is arranged in the end face on the inner side of the rear cover, a plunger linked with the piston rod of the cylinder is arranged in the blind hole, the outer wall of the plunger is provided with a ring-shaped groove, an installation hole is arranged in one side face of the rear cover, the installation hole is communicated with the blind hole in the rear cover, an installation base is disposed in the installation hole, an anti-drop piston is arranged in a cavity body of the installation base in a sliding mode, a compression spring is arranged between the anti-drop piston and the installation base, and the compression spring can push the anti-drop piston so that the bottom of the anti-drop piston penetrates through the installation hole and is clamped in the ring-shaped groove in the plunger. The self-lock cylinder has the advantages of being safe, reliable and suitable for popularizing and use, and air does not need to be introduced into a front air chamber of the cylinder to keep pressure.
Description
Technical field
The utility model relates to a kind of cylinder, particularly relates to a kind of self-locking air cylinder of piston rod landing when preventing vertical installation cylinder.
Background technique
At present, numerical control milling machine tradition tool changing cover cylinder is generally common cylinder on the market, as shown in Figure 1, comprise body a, piston rod b, with piston c, protecgulum d and the bonnet e of piston rod b interlock, when requiring piston rod b to remain on retracted position, need to realize in protecgulum d end air inlet pressurize.The shortcoming of this cylinder is: when protecgulum d air inlet pressurize forced piston rod b to keep retracted mode, in case die, piston rod b may stretch out, and easily causes serious consequence.
The model utility content
The purpose of this utility model is to provide a kind of and is provided with the self-locking air cylinder of locking device at cylinder back cover, with solve exist in the background technique in case die, piston rod may stretch out, and easily causes the problem of serious consequence.
To achieve these goals, the technological scheme of the utility model self-locking air cylinder is: a kind of self-locking air cylinder, comprise the cylinder and piston bar, the front end of described cylinder is provided with protecgulum, the rear end of cylinder is provided with bonnet, this bonnet inner side end is provided with blind hole, be provided with the plunger with the interlock of the piston rod of cylinder in the blind hole, the outer wall of plunger is provided with annular recess, one side of described bonnet is provided with mounting hole, this mounting hole is communicated to the blind hole of described bonnet, be provided with fitting seat in the mounting hole, be provided with slidably anti-fall piston in the cavity of fitting seat, be provided with Compress Spring between described anti-fall piston and the fitting seat, described Compress Spring can promote anti-fall piston makes its bottom pass in mounting hole and snap in the annular recess on the plunger.The mentality of designing of this self-locking air cylinder is: the bonnet at cylinder installs a locking structure additional, the concrete practice is: offer mounting hole at bonnet, be provided with fitting seat in the mounting hole, establish slidably anti-fall piston in the fitting seat cavity, between fitting seat and anti-fall piston, be provided with Compress Spring, this spring applies elastic force to anti-fall piston all the time, owing to be in the air chamber for gaseity before the cylinder, cylinder piston rod is pushed to the rear end, annular recess on the plunger is aimed at anti-fall piston crown, spring will promote anti-fall piston to be fallen in the annular recess its head to block, and does not so just need protecgulum air inlet pressurize, safe and reliable; And during release, just in the air chamber of cylinder rear end, inflate, air pressure is during greater than spring force, and the head of anti-fall piston leaves annular recess, can realize release.
As preferably, be provided with sliding bearing between described anti-fall piston and the mounting hole, the external diameter of this sliding bearing and mounting hole diameter are adaptive, and the internal diameter of described sliding bearing and the diameter of anti-fall piston are adaptive.Sliding bearing can effectively reduce frictional force simultaneously for moving up and down of anti-fall piston provides lubricated effect of leading when lateral force resistance is provided.
As preferably, be equipped with bumper on the opposing end surface of described anti-fall piston and fitting seat.When bumper can reduce anti-fall piston release to the impact force of fitting seat.
As preferably, the medial extremity of described anti-fall piston is provided with wear-resistant pad.Wear-resistant pad can reduce anti-fall piston to the friction infringement of piston rod.
As preferably, an end of described plunger has screw rod, and the ear end face of the piston rod of described cylinder is provided with screw, and this screw is connected with the screw rod of plunger one end.
As preferably, described fitting seat is provided with screw, is provided with hand lever in the screw, and this hand lever front end stretches in the cavity of fitting seat and is connected with anti-fall piston.Except inflation makes the locking device release, break down such as device, also available hand pulls out hand lever and realizes release.
As preferably, the front end of described hand lever is screw rod, and the outboard end of described anti-fall piston is provided with screw, and this screw is connected with the screw flight of hand lever front end.Hand lever and anti-fall piston are for being threaded, and be simple and reliable.
As preferably, this self-locking air cylinder also has the silencing apparatus on the screw that can be loaded on fitting seat.When cylinder was in normal working, do not need manual unlocking this moment, hand lever can be taken off, and loads onto silencing apparatus, both can eliminate the noise, exhaust, can also prevent that impurity from entering.
As preferably, this self-locking air cylinder also has the screw on the screw that can be loaded on fitting seat, and is provided with exhaust port in the side direction of fitting seat.When cylinder was in normal working, do not need manual unlocking this moment, hand lever can be taken off, and it is dustproof to load onto screw, but for exhaust, need to offer exhaust port in the fitting seat side direction.
As preferably, be provided with bloop in the described exhaust port.
The beneficial effect of the utility model self-locking air cylinder is: do not need the front air chamber air inlet pressurize of cylinder, and safe and reliable.
Description of drawings
Fig. 1 is a kind of structural representation of cylinder of the prior art;
Fig. 2 is the structural representation of self-locking air cylinder among the embodiment 1;
Fig. 3 is the enlarged diagram at A place among Fig. 2;
Fig. 4 is the structural representation of self-locking air cylinder among the embodiment 2;
Fig. 5 removes screw among the embodiment 2, loads onto the structural representation of hand lever.
Number in the figure is respectively: 1 cylinder, 2. piston rods, 3. protecgulums, 4. bonnets, 5. sliding bearings, 6. seal rings, 7. back-up rings, 8. clasps, 9. fitting seats, 10. anti-fall piston 11. bumpers 12. wear-resistant pads 13. hand levers 14. Compress Springs 15. plungers 16. annular recess 17. silencing apparatuss 18. screws 19. exhaust ports 20. bloops.
Embodiment
Also by reference to the accompanying drawings the technical solution of the utility model is further described specifically below by embodiment.
Embodiment 1:
A kind of self-locking air cylinder, as shown in Figures 2 and 3, comprise cylinder 1 and piston rod 2, the front end of described cylinder 1 is provided with protecgulum 3, the rear end of cylinder 1 is provided with bonnet 4, inner side end at bonnet 4 has blind hole, one side of described bonnet 4 is provided with mounting hole, it is descending stepped that the diameter of this mounting hole is from outside to inside, sliding bearing 5 is housed on step surface from the inside to the outside successively, seal ring 6, be used for blocking back-up ring 7 and the fitting seat 9 of seal ring 6, described fitting seat 9 and bonnet 4 are for being bolted, slidably anti-fall piston 10 is housed in described fitting seat 9 cavitys, the internal diameter of the diameter of this anti-fall piston 10 and seal ring 6, the internal diameter of the internal diameter of back-up ring 7 and sliding bearing 5 is all adaptive, on described anti-fall piston 10 outer walls clasp 8 is housed, clasp 8 is used for blocking back-up ring 7, and the two-way interaction prevents that anti-fall piston 10 from falling, have diameter on the outside end face of described anti-fall piston 10 and be from outside to inside descending stepped hole, the exterior edge face that comprises anti-fall piston 10 always has three grades of steps, the hole of diameter minimum is screw, the bumper 11 that the first order and the card of the inwall between the step of the second level in the outside has ring-type, on fitting seat 9 cavity inner side ends, bumper 11 is housed also, two bumper 11 correspondences, medial extremity at the close piston rod 11 of anti-fall piston 10 has groove, and wear-resistant pad 12 is housed in the groove.Hand lever 13 also is housed on fitting seat 9, and the front end of this hand lever 13 is screw rod, and the screw of the front end screw rod of this hand lever 13 by fitting seat 9 stretches in the cavity with the screw opened on anti-fall piston 10 outside end faces and be connected.Have Compress Spring 14, the upper end of this Compress Spring 14 to withstand on the inner side end of fitting seat 9 at hand lever 13 cover, the lower end of described Compress Spring 14 withstands on the third level step in the anti-fall piston 10.Plunger 15 also is housed in the blind hole of bonnet 4, has annular recess 16 on the outer wall of this plunger 15, the medial extremity of described plunger 15 has screw rod, has screw at the ear end face of piston rod 11, and this screw is connected with the screw flight of plunger 15 medial extremitys.
In addition, this self-locking air cylinder also has the silencing apparatus 17 on the screw that can be loaded on fitting seat 9.When cylinder was in normal working, do not need manual unlocking this moment, hand lever 13 can be taken off, and loads onto silencing apparatus 17, both can eliminate the noise, exhaust, can also prevent that impurity from entering.
During use, in air chamber before the cylinder, be in for gaseity, cylinder piston rod 2 is pushed to the rear end, annular recess 16 on the plunger 15 is aimed at anti-fall piston 10 heads, Compress Spring 14 will promote anti-fall piston 10 to be fallen in the annular recess 16 its head to block, so just do not need the front air chamber air inlet pressurize of cylinder, safe and reliable; And during release, just in the air chamber of cylinder rear end, inflate, air pressure is during greater than spring force, and the head of anti-fall piston leaves annular recess, can realize release; If cylinder breaks down, can't realize release, silencing apparatus 17 can be taken off, change hand lever 13, be pulled outwardly just manually release.
Embodiment 2:
A kind of self-locking air cylinder, as shown in Figure 4, the difference among itself and the embodiment 1 is: dress is not silencing apparatus 17 on the fitting seat 9, but screw 18, and is provided with exhaust port 19 in the side direction of fitting seat 9, is pressed into bloop 20 in the relief opening 19.
Similarly, when needing manual unlocking, still can take off screw 18, load onto hand lever 13 and realize manual unlocking, as shown in Figure 5.
Above-mentioned described specific embodiment only is that the preferable examples explanation is done in design of the present utility model.All any modifications of making within spirit of the present utility model and principle or replenish or be equal to alternatively all should be included within the protection domain of the utility model claim.
Claims (10)
1. self-locking air cylinder, comprise cylinder (1) and piston rod (2), the front end of described cylinder (1) is provided with protecgulum (3), the rear end of cylinder (1) is provided with bonnet (4), it is characterized in that: this bonnet (4) inner side end is provided with blind hole, be provided with the plunger (15) with the interlock of the piston rod (2) of cylinder (1) in the blind hole, the outer wall of plunger (15) is provided with annular recess (16), one side of described bonnet (4) is provided with mounting hole, this mounting hole is communicated to the blind hole of described bonnet (4), be provided with fitting seat (9) in the mounting hole, be provided with slidably anti-fall piston (10) in the cavity of fitting seat (9), be provided with Compress Spring (14) between described anti-fall piston (10) and the fitting seat (9), described Compress Spring (14) can promote anti-fall piston (10) makes its bottom pass in mounting hole and snap in the annular recess (16) on the plunger (15).
2. self-locking air cylinder according to claim 1, it is characterized in that: be provided with sliding bearing (5) between described anti-fall piston (10) and the mounting hole, external diameter and the mounting hole diameter of this sliding bearing (5) are adaptive, and the diameter of the internal diameter of described sliding bearing (5) and anti-fall piston (10) is adaptive.
3. self-locking air cylinder according to claim 1 and 2 is characterized in that: be equipped with bumper (11) on the opposing end surface of described anti-fall piston (10) and fitting seat.
4. self-locking air cylinder according to claim 1 and 2, it is characterized in that: the medial extremity of described anti-fall piston (10) is provided with wear-resistant pad (12).
5. self-locking air cylinder according to claim 1 and 2, it is characterized in that: an end of described plunger (15) has screw rod, and the ear end face of the piston rod (2) of described cylinder (1) is provided with screw, and this screw is connected with the screw rod of plunger (15) one ends.
6. self-locking air cylinder according to claim 1 and 2, it is characterized in that: described fitting seat (9) is provided with screw, is provided with hand lever (13) in the screw, and this hand lever (13) front end stretches in the cavity of fitting seat (9) and is connected with anti-fall piston (10).
7. self-locking air cylinder according to claim 6, it is characterized in that: the front end of described hand lever (13) is screw rod, and the outboard end of described anti-fall piston (10) is provided with screw, and this screw is connected with the screw flight of hand lever (13) front end.
8. self-locking air cylinder according to claim 7, it is characterized in that: this self-locking air cylinder also has the silencing apparatus (17) on the screw that can be loaded on fitting seat (9).
9. self-locking air cylinder according to claim 7, it is characterized in that: this self-locking air cylinder also has the screw (18) on the screw that can be loaded on fitting seat (9), and is provided with exhaust port (19) in the side direction of fitting seat (9).
10. self-locking air cylinder according to claim 9 is characterized in that: be provided with bloop (20) in the described exhaust port (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220294874 CN202789822U (en) | 2012-06-21 | 2012-06-21 | Self-lock cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220294874 CN202789822U (en) | 2012-06-21 | 2012-06-21 | Self-lock cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789822U true CN202789822U (en) | 2013-03-13 |
Family
ID=47817088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220294874 Expired - Lifetime CN202789822U (en) | 2012-06-21 | 2012-06-21 | Self-lock cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789822U (en) |
-
2012
- 2012-06-21 CN CN 201220294874 patent/CN202789822U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202338527U (en) | Self-locking air cylinder | |
| CN103267152B (en) | Combined type bottle valve | |
| CN104454780A (en) | Oil cylinder with mechanical locking function and hydraulic system | |
| CN110486114A (en) | Integrated engine braking executes piston | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN202789822U (en) | Self-lock cylinder | |
| CN202883551U (en) | Air cylinder with locking device | |
| CN105035065B (en) | A kind of throttling stepless voltage transformation trailer control valve | |
| CN205801505U (en) | A kind of cylinder seat assembly for main airplane wheel brake gear | |
| CN208281420U (en) | A kind of telescopic system device | |
| CN102725572B (en) | Multi-stage switchable pilot-controlled valve arrangement | |
| CN204978625U (en) | Multimode adaptation formula car arresting gear | |
| CN101509530A (en) | Hydraulic disk type brake | |
| CN204647238U (en) | The Ventilated cap of speed reducer | |
| CN2509362Y (en) | Air cylinder with piston bar self-locking device | |
| CN107401566A (en) | Clearance self-regulating return brake device and its calipers assembly | |
| CN104499263A (en) | Vacuum automatic adjusting device of cutting bed | |
| CN206802155U (en) | Clearance self-regulating return brake device and its calipers assembly | |
| CN210033740U (en) | Air booster pump | |
| CN103032579A (en) | Pressure air intake and exhaust volume amplifying device of exhaust valve | |
| CN203656291U (en) | Stacked pressure reducing valve | |
| TWM460165U (en) | Self-locking type cylinder | |
| CN102840190B (en) | Air cylinder special for preventing from clamping persons for underground air door of coal mine | |
| CN205419645U (en) | Automatic keep permanent clearance work safety integration brake cylinder | |
| CN106014043B (en) | A kind of furniture damper integrated optimization architecture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |