CN203197845U - Reinforced type bolt extractor - Google Patents
Reinforced type bolt extractor Download PDFInfo
- Publication number
- CN203197845U CN203197845U CN 201320239697 CN201320239697U CN203197845U CN 203197845 U CN203197845 U CN 203197845U CN 201320239697 CN201320239697 CN 201320239697 CN 201320239697 U CN201320239697 U CN 201320239697U CN 203197845 U CN203197845 U CN 203197845U
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- CN
- China
- Prior art keywords
- bolt
- reinforced
- toothed sleeve
- extractor
- thread
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- 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
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- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The utility model relates to a reinforced type bolt extractor. The reinforced type bolt extractor comprises a threaded rod and a reinforced toothed sleeve. One square head is arranged at the upper end of the threaded rod. A metric left-hand thread is arranged on the middle portion of the threaded rod. A multi-head taper thread is arranged on the lower portion of the threaded rod. Another square head is arranged on the upper portion of the outer side of the reinforced toothed sleeve. A metric left-hand internal thread is arranged on the inner side of the reinforced toothed sleeve. Four leftward gripping teeth are arranged on the end face of the lower portion of the reinforced toothed sleeve. The metric left-hand internal thread of the reinforced toothed sleeve is matched with the metric left-hand thread on the middle portion of the threaded rod. By adopting the reinforced toothed sleeve, the cross sectional area of the bolt extractor is increased, the torsional strength of the bolt extractor is also enhanced, and the probability of taking out a fractured bolt is increased; the reinforced toothed sleeve grips the fracture surface of the fractured bolt in a combined mode for transferring torque, so that the possibility that an existing bolt extractor is fractured in a bolt extracting aperture is avoided.
Description
Technical field
The utility model relates to a kind of repair of machine instrument, especially relates to a kind of bolt extractor that takes out break bolt in the screw of machine, equipment.
Background technology
Hexagon-headed bolt, studs, soket head cap screw often break in the screw of machine, equipment in use.The part that taking-up breaks in the screw is relatively more difficult, and method commonly used is to use the bolt extractor.The structure of bolt extractor such as Fig. 1, top is square toes, the bottom is the left-hand screw screw thread.During use, must select first the fluted drill of a suitable specification, an aperture is bored in section center at bolt, again the bolt extractor is inserted in the aperture, then clamp the square toes of bolt extractor with windeisen or adjustable wrench, firmly rotate counterclockwise, be about to break at the bolt taking-up of machine, equipment the inside.Because the cross-sectional area of bolt extractor own is little, makes its torsional strength not high, when exerting oneself rotating bolt, usually self rupture, break in the bolt section central small hole, make bolt taking-up work more difficult.
Summary of the invention
The purpose of this utility model is to overcome the defective that above-mentioned prior art exists, and provides a kind of torsional strength high, makes break bolt take out the reinforced bolt extractor that probability increases.
Reinforced bolt extractor of the present utility model comprises screw rod, comprises that also one strengthens the tooth cover, and described screw rod upper end is square toes, and the middle part is metric system left-hand screw screw thread, and the bottom is the bull taper thread; Described reinforcement tooth cover outer upper is square toes, and the inboard is metric system left-hand screw internal thread, and lower end surface is that four left-hands are stung tooth, and the metric system left-hand screw internal thread of described reinforcement tooth cover matches with the metric system left-hand screw screw thread at described screw rod middle part.
Operation principle of the present utility model is as follows:
1, adopts the torsional strength that strengthens tooth cover increase bolt extractor;
2, adopt enhancing tooth cover bottom to sting the section transmitting torque that tooth is bitten break bolt;
3, strengthen the tooth cover and be threaded with the screw rod employing, make enhancing tooth cover can bite the end face of break bolt.
When reinforced bolt extractor uses, an aperture is bored in section center at bolt, again screw rod is inserted in the aperture, then clamp the square toes of bolt extractor with windeisen or adjustable wrench, firmly change over to counterclockwise and bore good aperture, after screw rod is painstaking, to strengthen the tooth cover is screwed on the screw rod, under the effect of screw thread, strengthen the tooth cover and move downward, its end face is stung tooth and is interlocked with the break bolt section gradually, is rotated further to strengthen the tooth cover, the bolt that breaks at machine, equipment the inside is thereupon left-handed, takes out from screw.
The utility model has the following advantages compared with prior art:
1) cross-sectional area that the tooth cover has increased the bolt extractor is strengthened in utilization, has increased the torsional strength of bolt extractor, and the probability that break bolt is taken out increases;
2) adopt reinforcement tooth cover interlock break bolt section transmitting torque, avoided existing bolt extractor to break at the possibility of getting in the bolt aperture;
3) connect power with matrix when excessive when break bolt, can sting tooth planing break bolt section by the bottom, thereby reduce the area that connects of break bolt and screw, the power that connects of reduction break bolt and screw easily screws out break bolt from matrix.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of existing bolt extractor.
Fig. 2 is the structural representation of the reinforced bolt extractor of the utility model.
Fig. 3 is the structural representation of screw rod among Fig. 1.
Fig. 4 is the front view of strengthening the tooth cover among Fig. 1.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the right view of Fig. 4.
Among the figure: 1. screw rod, 2. strengthen the tooth cover, 3. sting tooth.
The specific embodiment
The structure of reinforced bolt extractor such as Fig. 2 except screw rod 1, comprise that also one strengthens tooth cover 2.The structure of screw rod 1 such as Fig. 3, the upper end is square toes, and the middle part is metric system left-hand screw screw thread, and the bottom is the bull taper thread; Strengthen structure such as Fig. 4,5,6 of tooth cover 2, outer upper is square toes, and the inboard is metric system left-hand screw internal thread, and lower end surface is that four left-hands are stung tooth 3.The metric system left-hand screw internal thread of strengthening tooth cover 2 matches with the metric system left-hand screw screw thread at screw rod 1 middle part.
When reinforced bolt extractor uses, an aperture is bored in section center at bolt, again screw rod 1 is inserted in the aperture, then clamp the square toes of bolt extractor with windeisen or adjustable wrench, firmly change over to counterclockwise and bore good aperture, after screw rod 1 is painstaking, to strengthen tooth cover 2 is screwed on the screw rod 1, under the effect of screw thread, strengthen tooth cover 2 and move downward, its end face is stung tooth 3 and is interlocked with the break bolt section gradually, is rotated further to strengthen tooth cover 2, the bolt that breaks at machine, equipment the inside is thereupon left-handed, takes out from screw.
Claims (1)
1. a reinforced bolt extractor comprises screw rod, characterized by further comprising one and strengthens the tooth cover, and described screw rod upper end is square toes, and the middle part is metric system left-hand screw screw thread, and the bottom is the bull taper thread; Described reinforcement tooth cover outer upper is square toes, and the inboard is metric system left-hand screw internal thread, and lower end surface is that four left-hands are stung tooth, and the metric system left-hand screw internal thread of described reinforcement tooth cover matches with the metric system left-hand screw screw thread at described screw rod middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239697 CN203197845U (en) | 2013-05-07 | 2013-05-07 | Reinforced type bolt extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239697 CN203197845U (en) | 2013-05-07 | 2013-05-07 | Reinforced type bolt extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203197845U true CN203197845U (en) | 2013-09-18 |
Family
ID=49141984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320239697 Expired - Fee Related CN203197845U (en) | 2013-05-07 | 2013-05-07 | Reinforced type bolt extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203197845U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858061A (en) * | 2018-06-06 | 2018-11-23 | 常州星宇车灯股份有限公司 | A kind of left-hand thread tooling quickly removed when the fracture for mould of car lamp water pipe head |
| CN112714682A (en) * | 2018-09-19 | 2021-04-27 | 加固控股有限责任公司 | Fastener removing tool and fastener removing device combination |
| US11897099B2 (en) | 2018-09-19 | 2024-02-13 | Grip Holdings Llc | Fastener extractor and dislodging tool apparatus |
-
2013
- 2013-05-07 CN CN 201320239697 patent/CN203197845U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858061A (en) * | 2018-06-06 | 2018-11-23 | 常州星宇车灯股份有限公司 | A kind of left-hand thread tooling quickly removed when the fracture for mould of car lamp water pipe head |
| CN112714682A (en) * | 2018-09-19 | 2021-04-27 | 加固控股有限责任公司 | Fastener removing tool and fastener removing device combination |
| EP4245463A1 (en) * | 2018-09-19 | 2023-09-20 | Grip Holdings LLC | Fastener extractor and dislodging tool apparatus |
| US11897099B2 (en) | 2018-09-19 | 2024-02-13 | Grip Holdings Llc | Fastener extractor and dislodging tool apparatus |
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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: 20130918 Termination date: 20180507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |