CN203223511U - Conical surface type nitrogen spring overload safety protection structure - Google Patents
Conical surface type nitrogen spring overload safety protection structure Download PDFInfo
- Publication number
- CN203223511U CN203223511U CN 201320246667 CN201320246667U CN203223511U CN 203223511 U CN203223511 U CN 203223511U CN 201320246667 CN201320246667 CN 201320246667 CN 201320246667 U CN201320246667 U CN 201320246667U CN 203223511 U CN203223511 U CN 203223511U
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- piston
- conical surface
- nitrogen spring
- cylinder body
- seal cover
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- Expired - Fee Related
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Abstract
The utility model discloses a conical surface type nitrogen spring overload safety protection structure. A piston sealing sleeve is arranged at the upper end of a cylinder body in a sealed mode, a piston penetrates through the piston sealing sleeve and extends out of the cylinder body, a seal ring is arranged between the piston and the piston sealing sleeve, the seal ring is embedded in a groove in the upper end of the piston sealing sleeve in a clamped mode, and a framework oil seal is embedded in a middle groove of the inner side of the piston sealing sleeve in a clamped mode. The conical surface type nitrogen spring overload safety protection structure is characterized in that an upper section outer circumferential face where the piston is arranged is a comical surface, the conical surface is arranged in a position, 5cm away from the top end face of the cylinder body, of the top end face of the piston when the piston moves downward, and the conical bottom face of the conical surface and the lower end face of the framework oil seal are in the same plane. The conical surface type nitrogen spring overload safety protection structure safely and effectively solves the problem that a nitrogen spring is broken due to overload caused by too large external force through a method of setting taper, and is simple in structure, practical and convenient to machine.
Description
Technical field
The utility model relates to nitrogen spring, more precisely a kind of conical surface formula nitrogen spring overload protection structure that prevents the nitrogen spring overload.
Background technique
Nitrogen spring is a kind of novel spring that the stamping part mould ejects workpiece in the mechanical 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 advantages such as volume is little, and elastic force is big, 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 critical value remind the user, namely the piston upper-end surface can not be less than 5 centimetres apart from the cylinder body upper-end surface, otherwise nitrogen spring will be destroyed because of overload.This mode just reminds the user to notice this problem in use, does not effectively solve the overload problem, has very big potential safety hazard.
The model utility content
The utility model is for avoiding above-mentioned existing in prior technology deficiency, a kind of nitrogen spring overload protection structure that can effectively prevent the nitrogen spring overload being provided.
The utility model adopts following technological scheme for the technical solution problem:
The utility model conical surface formula nitrogen spring overload 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, its structural feature is: the epimere outer peripheral surface that described piston is set is conical surface, the height that described conical surface is set is: when piston moved downward 5 centimetres of positions of top end face of top end identity distance cylinder body of piston, the awl bottom surface of described conical surface and place, the lower end surface of described outside framework oil seal were at grade.
The structural feature of the utility model conical surface formula nitrogen spring overload protection structure also is: the bottom inner peripheral surface of 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:
The utility model has solved nitrogen spring safely and effectively by the mode that conical surface is set and transshipped ruined problem because external force is excessive, and is simple in structure, practical, easy to process.
Description of drawings
Fig. 1 is the general structure schematic representation of the utility model nitrogen spring;
Fig. 2 is the utility model structure of piston schematic representation;
Number in the figure: 1 cylinder body; 2 pistons; 3 piston seal covers; 4 seal rings; 5 outside framework oil seals; 6 toroidal cavities; 7 positive stop lug boss.
Embodiment
Referring to Fig. 1 and Fig. 2, conical surface formula nitrogen spring overload 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 4 between piston 2 and the piston seal cover 3, seal ring 4 inlay cards are in 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 5.
Conventional construction is destroyed for preventing the excessive nitrogen spring of external force overload, factory settings critical value remind the user, namely the piston upper-end surface can not be less than 5 cm apart from the cylinder body upper-end surface, otherwise nitrogen spring will be destroyed because of overload.This mode just reminds the user to notice this problem in use, does not effectively solve the overload problem, has very big potential safety hazard.The epimere outer peripheral surface that piston 2 is set that is improved to that the utility model is done conventional construction is conical surface, the height that described conical surface is set 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 awl bottom surface of conical surface and place, the lower end surface of described outside framework oil seal 5 were at grade.The bottom inner peripheral surface of piston seal cover 3 is provided with toroidal cavity 6, and being disposed radially in the bottom of piston 2 can spacing positive stop lug boss 7 in toroidal cavity.
Under external force, piston moves downward, when 5 centimetres of positions of top end face of piston head tip to face distance cylinder body 1, the awl bottom surface of conical surface and outside framework oil seal 5 lower end surfaces are on same plane, if piston continues to move downward, the slit occurs between piston and the piston seal cover, gas will overflow from the slit in the cylinder body, and cylinder interior pressure subtracts down.Thisly solved nitrogen spring safely and effectively by the mode that tapering is set and transshipped ruined problem because external force is excessive, simple in structure, practical, easy to process.
Claims (2)
1. conical surface formula nitrogen spring overload 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 (4) between described piston (2) and the described piston seal cover (3), described seal ring (4) 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 (5), it is characterized in that: the epimere outer peripheral surface that described piston (2) is set is conical surface, the height that described conical surface is set 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), place, the lower end surface of the awl bottom surface of described conical surface and described outside framework oil seal (5) at grade.
2. conical surface formula nitrogen spring overload according to claim 1 is protected structure; it is characterized in that: the bottom inner peripheral surface of described piston seal cover (3) is provided with toroidal cavity (6), and being disposed radially in the bottom of described piston (2) can spacing positive stop lug boss (7) in described toroidal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320246667 CN203223511U (en) | 2013-05-09 | 2013-05-09 | Conical surface type nitrogen spring overload safety protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320246667 CN203223511U (en) | 2013-05-09 | 2013-05-09 | Conical surface type nitrogen spring overload safety protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223511U true CN203223511U (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320246667 Expired - Fee Related CN203223511U (en) | 2013-05-09 | 2013-05-09 | Conical surface type nitrogen spring overload safety protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782163A (en) * | 2014-12-24 | 2016-07-20 | 大连光洋科技集团有限公司 | Unpowered pressure-maintaining telescoping cylinder and clamp applied by unpowered pressure-maintaining telescoping cylinder |
-
2013
- 2013-05-09 CN CN 201320246667 patent/CN203223511U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782163A (en) * | 2014-12-24 | 2016-07-20 | 大连光洋科技集团有限公司 | Unpowered pressure-maintaining telescoping cylinder and clamp applied by unpowered pressure-maintaining telescoping cylinder |
| CN105782163B (en) * | 2014-12-24 | 2017-10-13 | 大连光洋科技集团有限公司 | Unpowered pressurize telescoping cylinder and its binding clasp of application |
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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 |
Granted publication date: 20131002 Termination date: 20170509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |