CN203239822U - Safety valve type nitrogen spring overload safety protecting mechanism - Google Patents
Safety valve type nitrogen spring overload safety protecting mechanism Download PDFInfo
- Publication number
- CN203239822U CN203239822U CN 201320246534 CN201320246534U CN203239822U CN 203239822 U CN203239822 U CN 203239822U CN 201320246534 CN201320246534 CN 201320246534 CN 201320246534 U CN201320246534 U CN 201320246534U CN 203239822 U CN203239822 U CN 203239822U
- Authority
- CN
- China
- Prior art keywords
- piston
- safety valve
- cylinder body
- nitrogen spring
- seal cover
- 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 - Fee Related
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a safety valve type nitrogen spring overload safety protecting mechanism. The mechanism is characterized in that a safety valve is arranged in a step hole in the bottom of a cylinder body and is formed in the mode that a safety valve sealing ring is embedded in a groove in the outer circumferential face of a blocking block, the bottom of the blocking block is connected with a spring, the side face of the cylinder body is provided with an exhaust hole, the exhaust hole is formed in a position where the upper end face of the safety valve sealing ring and the lower end face of the exhaust hole are on the same plane when a piston moves downward until the top end face of the piston is 5cm away from the top end face of the cylinder body. By means of arrangement of the safety valve, the problem that overload of a nitrogen spring is damaged due to overlarge external force is safely and effectively solved, and the safety valve is simple in structure, practical and convenient to process.
Description
Technical field
The utility model relates to nitrogen spring, more precisely a kind of safe valve type nitrogen spring overload safety protection structure that prevents the nitrogen spring overload.
Background technique
Nitrogen spring is a kind of novel spring that stamping part die ejects workpiece in the machinery industry, and it is sealed in high pressure nitrogen in definite container, and external force is compressed nitrogen by piston rod, expands to obtain certain elastic force pressure by high pressure nitrogen when external force is removed.Nitrogen spring has the advantages such as volume is little, and elastic force is large, and the life-span is long, and elastic force pressure is constant.Existing nitrogen spring, its structure generally comprise cylinder body, piston, piston seal cover, inflatable component and several parts of auxiliary device.
At present, destroyed for preventing the excessive nitrogen spring of external force overload, factory settings the critical value reminding user, namely the piston upper-end surface can not be less than 5 centimetres apart from cylinder upper end face, otherwise nitrogen spring will be destroyed because of overload.This mode is that reminding user is noticed this problem in use, does not effectively solve the overload problem, has very large potential safety hazard.
The model utility content
The utility model is for avoiding the existing deficiency of above-mentioned prior art, a kind of nitrogen spring overload safety protection structure that can effectively prevent the nitrogen spring overload being provided.
The utility model is that the technical solution problem adopts following technological scheme:
The utility model safe valve type nitrogen spring overload safety protection structure is the upper end that is encapsulated in cylinder body with the piston seal cover, and piston passes described piston seal cover and stretches out cylinder body; Be provided with seal ring between described piston and the described piston seal cover, described seal ring inlay card is in the groove of described piston seal set upper side; The inboard interior inlay card of intermediate groove of described piston seal cover has outside framework oil seal, and its structural feature is: in the step hole of cylinder base safety valve is set.
The structural feature of the utility model safe valve type nitrogen spring overload safety protection structure also is: described safety valve is inlay card safety valve seal ring in the groove of block outer peripheral surface, at the bottom of described block linking springs; The side of described cylinder body is provided with exhaust port, the position of described exhaust port is: when piston moved downward 5 centimetres of positions of top end face of top end identity distance cylinder body of piston, the upper-end surface of described safety valve seal ring and the lower end surface of exhaust port were on the same plane.
Bottom inner peripheral surface at described piston seal cover is provided with toroidal cavity, and being disposed radially in the bottom of described piston can spacing positive stop lug boss in described toroidal cavity.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model has solved safely and effectively nitrogen spring by the mode that safety valve is set and has transshipped destroyed problem because external force is excessive;
2, the utility model safety valve structure is simple, practical, easy to process;
3, the utility model arranges exhaust port at cylinder body, in case whether overload exhaust meeting is convenient to the user and is transshipped according to sound intuitive judgment nitrogen spring with titter sound.
Description of drawings
Fig. 1 is the general structure schematic representation of the utility model nitrogen spring;
Fig. 2 is the structural representation of the utility model safety valve;
Number in the figure: 1 cylinder body; 2 pistons; 3 piston seal covers; 4 safety valves; 4a safety valve seal ring; The 4b block; The 4c exhaust port; The 4d spring; 5 seal rings; 6 outside framework oil seals; 7 toroidal cavities; 8 positive stop lug boss.
Embodiment
Referring to Fig. 1 and Fig. 2, conical surface formula nitrogen spring overload safety protection structure in the present embodiment, identical with conventional construction is the upper end that is encapsulated in cylinder body 1 with piston seal cover 3, piston 2 passes piston seal cover 3 and stretches out cylinder body 1; Be provided with seal ring 5 between piston 2 and the piston seal cover 3, seal ring 5 inlay cards are in described piston seal overlaps the groove of 3 upper ends; The interior inlay card of intermediate groove that piston seal overlaps 3 inboards has outside framework oil seal 6.
Conventional construction is destroyed for preventing the excessive nitrogen spring of external force overload, factory settings the critical value reminding user, namely the piston upper-end surface can not be less than 5 centimetres apart from cylinder upper end face, otherwise nitrogen spring will be destroyed because of overload.This mode is that reminding user is noticed this problem in use, does not effectively solve the overload problem, has very large potential safety hazard.
The utility model is to being improved to that conventional construction is done: safety valve 4 is set in the step hole of cylinder body 1 bottom, and safety valve 4 is inlay card safety valve seal ring 4a in the groove of block 4b outer peripheral surface, at the bottom of block 4b linking springs 4d; The side of cylinder body 1 is provided with exhaust port 4c, the position of exhaust port 4c is: when piston 2 moved downward 5 centimetres of positions of top end face of top end identity distance cylinder body 1 of piston 2, the upper-end surface of safety valve seal ring 4a and the lower end surface of exhaust port 4c were on the same plane.Bottom inner peripheral surface at piston seal cover 3 is provided with toroidal cavity 7, and being disposed radially in the bottom of piston 2 can spacing positive stop lug boss 8 in toroidal cavity 7.
The top end face of top end identity distance cylinder body 1 that moves downward piston 2 at piston 2 is during less than 5 centimetres, block 4b is pressing spring 4d to move down, the upper-end surface of safety valve seal ring 4a is lower than the lower end surface of exhaust port 4c, gas is discharged, so that the cylinder body internal air pressure recovers normal, spring jack-up block resets, and gas stops to leak.Exhaust port 4c is little, in case transship the exhaust meeting with titter sound, the user also can know the nitrogen spring overload according to sound.
Claims (3)
1. a safe valve type nitrogen spring overload safety protection structure is the upper end that is encapsulated in cylinder body (1) with piston seal cover (3), and piston (2) passes described piston seal cover (3) and stretches out cylinder body (1); Be provided with seal ring (5) between described piston (2) and the described piston seal cover (3), described seal ring (5) inlay card is in the groove of described piston seal cover (3) upper end; The inboard interior inlay card of intermediate groove of described piston seal cover (3) has outside framework oil seal (6), it is characterized in that: in the step hole of cylinder body (1) bottom safety valve (4) is set.
2. safe valve type nitrogen spring overload safety protection structure according to claim 1, it is characterized in that: described safety valve (4) is inlay card safety valve seal ring (4a) in the groove of block (4b) outer peripheral surface, at the bottom linking springs (4d) of described block (4b); The side of described cylinder body (1) is provided with exhaust port (4c), the position of described exhaust port (4c) is: when piston (2) moved downward 5 centimetres of positions of top end face of top end identity distance cylinder body (1) of piston (2), the lower end surface of the upper-end surface of described safety valve seal ring (4a) and exhaust port (4c) was on the same plane.
3. safe valve type nitrogen spring overload safety protection structure according to claim 1; it is characterized in that: the bottom inner peripheral surface at described piston seal cover (3) is provided with toroidal cavity (7), and being disposed radially in the bottom of described piston (2) can spacing positive stop lug boss (8) in described toroidal cavity (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320246534 CN203239822U (en) | 2013-05-08 | 2013-05-08 | Safety valve type nitrogen spring overload safety protecting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320246534 CN203239822U (en) | 2013-05-08 | 2013-05-08 | Safety valve type nitrogen spring overload safety protecting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239822U true CN203239822U (en) | 2013-10-16 |
Family
ID=49317125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320246534 Expired - Fee Related CN203239822U (en) | 2013-05-08 | 2013-05-08 | Safety valve type nitrogen spring overload safety protecting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239822U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504119A (en) * | 2017-08-01 | 2017-12-22 | 江苏耐玛鑫精密机械有限公司 | A kind of overtravel uses self-relieving nitrogen spring |
| CN107787417A (en) * | 2015-06-26 | 2018-03-09 | 斯特罗姆斯霍尔曼股份公司 | The method of compressible flow body device and protection compressible flow body device including safety device |
| CN109519496A (en) * | 2019-01-04 | 2019-03-26 | 北京力华源科技发展有限公司 | A kind of nitrogen gas spring with the state superpressure overtravel protection device that can resume work |
| CN111601981A (en) * | 2018-04-26 | 2020-08-28 | 菲博罗有限公司 | Monitoring sensor with safety function for evacuating gas-filled spring by radio |
-
2013
- 2013-05-08 CN CN 201320246534 patent/CN203239822U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107787417A (en) * | 2015-06-26 | 2018-03-09 | 斯特罗姆斯霍尔曼股份公司 | The method of compressible flow body device and protection compressible flow body device including safety device |
| CN107504119A (en) * | 2017-08-01 | 2017-12-22 | 江苏耐玛鑫精密机械有限公司 | A kind of overtravel uses self-relieving nitrogen spring |
| CN111601981A (en) * | 2018-04-26 | 2020-08-28 | 菲博罗有限公司 | Monitoring sensor with safety function for evacuating gas-filled spring by radio |
| CN109519496A (en) * | 2019-01-04 | 2019-03-26 | 北京力华源科技发展有限公司 | A kind of nitrogen gas spring with the state superpressure overtravel protection device that can resume work |
| CN109519496B (en) * | 2019-01-04 | 2024-02-13 | 北京力华源科技发展有限公司 | Nitrogen spring with work state recoverable overpressure overtravel protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203239822U (en) | Safety valve type nitrogen spring overload safety protecting mechanism | |
| CN213516240U (en) | Die casting gas tightness detection device | |
| CN205765056U (en) | A kind of shaped piece fixed jig | |
| CN201322120Y (en) | high-pressure large-flow inflated safety valve | |
| CN203297727U (en) | Stop valve | |
| CN201434036Y (en) | Nitrogen spring for stamping mold | |
| CN204257716U (en) | Anti-explosion cover plate for lithium battery | |
| CN103912402A (en) | Engine air cylinder cover and air cylinder sleeve seal structure | |
| CN106762947B (en) | A kind of single-action hydraulic cylinder shown with internal leakage | |
| CN203223511U (en) | Conical surface type nitrogen spring overload safety protection structure | |
| CN202082189U (en) | Cone valve hydraulic cylinder exhaust device | |
| CN205026002U (en) | Under -voltage protection type nitrogen spring | |
| CN203098075U (en) | Sealing structure of air cylinder cover and air cylinder sleeve of engine | |
| CN203584955U (en) | Four-column twice-lifting cylinder | |
| CN112065806B (en) | Hydraulic cylinder unloading structure | |
| CN209587243U (en) | Gas compressor with reciprocating cylinder liquid hammer pressure relief valve | |
| CN202991263U (en) | Cylinder head cover seat ring groove | |
| CN202883546U (en) | Compound sealing structure for air cylinder end face | |
| CN203568259U (en) | Pneumatic compressed natural gas cylinder valve | |
| CN202500941U (en) | Single-cylinder hydraulic damper | |
| CN201910363U (en) | Self-sealing valve used for being connected with density relay | |
| CN104154070A (en) | Double-acting nut-locking hydrocylinder | |
| CN217271627U (en) | Nitrogen spring with overload protection function | |
| CN202926550U (en) | Improved cylinder structure of vacuum pump | |
| CN204328103U (en) | A kind of vertical gas control balance stop valve |
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 |
Granted publication date: 20131016 Termination date: 20170508 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |