CN202271213U - Multi-spring boosting normally-closed clamp holder - Google Patents
Multi-spring boosting normally-closed clamp holder Download PDFInfo
- Publication number
- CN202271213U CN202271213U CN2011203547106U CN201120354710U CN202271213U CN 202271213 U CN202271213 U CN 202271213U CN 2011203547106 U CN2011203547106 U CN 2011203547106U CN 201120354710 U CN201120354710 U CN 201120354710U CN 202271213 U CN202271213 U CN 202271213U
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- Prior art keywords
- spring
- jaw
- springs
- seat
- boosting
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Abstract
The utility model provides a multi-spring boosting normally-closed clamp holder, which mainly includes a hydraulic cylinder, springs, a jaw seat, a jaw and a gearbox. The multi-spring boosting normally-closed clamp holder is technically characterized in that the hydraulic oil cylinder is fixed on the gearbox, a spring seat is connected with the hydraulic oil cylinder, the springs are mounted on the spring seat and connected with the jaw seat, the jaw is compressed by the jaw seat, and the outer end of the jaw is in contact with an end cover in a connected manner. The elasticity of the springs is magnified through the conical contact surfaces of the jaw seat and the jaw and then acted on a drill rod (i.e. the boosting effect), so that the drill rod can be clamped; and after being fed with oil, the hydraulic oil cylinder pulls back the spring seat, so that the force acted on the jaw from the jaw seat disappears, and the jaw is released. The multi-spring boosting normally-closed clamp holder has the advantages that the manufacturing cost is low, and the spring quality is easily guaranteed; the springs are arranged annularly, so that the normal work of the clamp holder is not affected by the breaking of some of the springs, which achieves higher reliability; during spring replacement, the end cover and the jaw seat are dismounted, the jaw is removed, and then the springs can be taken out; and the weight of each spring is small, so that the maintenance is more convenient.
Description
Technical field
The utility model relates to the normally closed clamper of a kind of many springs boosting-type that a kind of rig, particularly rig are used.
Background technology
Rig used in everyday is that disk spring clamps, hydraulic unlock with the normally closed type clamper.The volume of disk spring is bigger, so also can make the clamper cumulative volume become big, when maintenance, changes also inconvenient; The disk spring quality is not easy to guarantee in addition, has influenced the functional reliability of clamper.
Summary of the invention
The purpose of the utility model is the deficiency to above-mentioned technological Nakamura Ataru, provides a kind of simple in structure, compact; Easy to maintenance; Practice thrift cost; The normally closed clamper of many springs boosting-type of reliable operation.
The purpose of the utility model is to realize like this; Comprise gearbox, hydraulic jack, spring base, spring, claw and end cap, it is characterized in that hydraulic jack is fixed on the gearbox; Spring base connects with hydraulic jack; Spring and the master jaw installed on the spring base join, and master jaw compresses claw, and the claw outer end joins with end cap and contacts.
18 cylindrical springs that employing is circular layout are around master jaw, and master jaw has inner conical surface, and claw has the male cone (strobilus masculinus) of equal angular to contact with master jaw.When spring promoted master jaw, master jaw passed to claw through the conical surface with power, because the amplification of the conical surface makes the chucking power of claw be able to amplify; Spring base links with hydraulic jack again, and when hydraulic jack was worked, the pulling master jaw was retreated, and claw unclamps.
Advantage of the utility model and effect: 18 cylindrical springs that this structure adopted, low cost of manufacture, spring-mass guarantees easily; Spring is arranged ringwise, even indivedual fractures are arranged, also can not influence the operate as normal of clamper, and reliability is higher; When changing spring, only need pull down end cap and master jaw, take down claw, just can take out spring, each spring weight is less, so keep in repair more convenient.
Description of drawings:
Fig. 1 is the utility model structure chart.
Fig. 2 is the utility model shape assumption diagram.
Fig. 3 is the left side view of Fig. 2.
Fig. 4 is the utility model schematic diagram.
The specific embodiment:
Below in conjunction with accompanying drawing present embodiment is further specified
Can know by Fig. 1-3, mainly form by gearbox, hydraulic jack (1), spring base (2), spring (3), C, claw (5) and end cap.Hydraulic jack (1) is fixed on the gearbox, and spring base (2) connects with hydraulic jack, and spring base (2) is gone up the spring of installing (3) and joined with master jaw (4), and master jaw (4) compresses claw (5), and claw (5) outer end joins with end cap and contacts.Spring adopts 18-28 root cylindrical spring.
Can be known that by Fig. 4 spring (3) elastic force acts on the master jaw (4), master jaw (4) compresses claw (5) through the conical surface, after the elastic force of spring just amplifies through the conical surface like this, acts on the drilling rod through claw (5).After the hydraulic jack oil-feed, pulling master jaw (4) is moved to the left, and spring (3) is compressed, and the power that master jaw (4) acts on the claw (5) disappears, and claw (5) separately.
Claims (4)
1. the normally closed clamper of spring boosting-type more than a kind; Comprise gearbox, hydraulic jack, spring base, spring, claw and end cap, it is characterized in that hydraulic jack is fixed on the gearbox; Spring base connects with hydraulic jack; Spring and the master jaw installed on the spring base join, and master jaw compresses claw, and the claw outer end joins with end cap and contacts.
2. according to the normally closed clamper of a kind of many springs boosting-type described in the claim 1, it is characterized in that: spring adopts many cylindrical springs.
3. according to the normally closed clamper of a kind of many springs boosting-type described in the claim 1, it is characterized in that: spring adopts 18-28 root cylindrical spring.
4. according to the normally closed clamper of a kind of many springs boosting-type described in the claim 1, it is characterized in that: spring adopts 18 cylindrical springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203547106U CN202271213U (en) | 2011-09-21 | 2011-09-21 | Multi-spring boosting normally-closed clamp holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203547106U CN202271213U (en) | 2011-09-21 | 2011-09-21 | Multi-spring boosting normally-closed clamp holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202271213U true CN202271213U (en) | 2012-06-13 |
Family
ID=46191599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203547106U Expired - Fee Related CN202271213U (en) | 2011-09-21 | 2011-09-21 | Multi-spring boosting normally-closed clamp holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202271213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305770A (en) * | 2017-01-12 | 2018-07-20 | 万润科技股份有限公司 | Clamp and material arranging method and device using same |
-
2011
- 2011-09-21 CN CN2011203547106U patent/CN202271213U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305770A (en) * | 2017-01-12 | 2018-07-20 | 万润科技股份有限公司 | Clamp and material arranging method and device using same |
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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: 20120613 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |