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A detachable bolt extractor

A technology for extractors and bolts, applied in the field of detachable bolt extractors, can solve the problems of small cross-sectional area, low strength, and easy breakage of the bolt extractors, so as to reduce the risk of fracture and increase the service life. , to avoid the effect of tilt

Active Publication Date: 2018-02-16
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cross-sectional area of ​​the traditional bolt extractor is small, and its strength is not high. When the axis of the bolt extractor is inconsistent with the axis of the broken bolt, the bolt extractor is easily broken when it is turned hard, especially when the bolt extractor is broken. When the center of the end face is centered, it makes it difficult to remove the broken bolt

Method used

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  • A detachable bolt extractor
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  • A detachable bolt extractor

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 and 2 As shown, the present invention provides a detachable bolt extractor, which includes: a screw 1, a connector 3, a base fixing block 4, a first positioning bolt 5 and a second positioning bolt 11; on the plane 12 of the base fixing block Two threaded holes 9 are symmetrically distributed, and the axis of each threaded hole 9 is perpendicular to the plane 12 of the foundation fixed block; The two threaded holes are matched, and a through hole 10 is opened in the middle of the side of the basic fixed block 4, such as Figure 5 As shown, the lower end of the connector 3 is connected to the through hole 10, the upper end of the connector 3 has a gear sleeve 2, and the gear sleeve 2 is provided with an internal thread, and the middle of the screw rod 1 is provided with a helical thread. 7. Vertically screw the screw 1 into the upper...

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Abstract

The invention provides a detachable bolt unscrewing device which comprises a screw rod (1), a connector (3), a basic fixing block (4), a first positioning bolt (5) and a second positioning bolt (11). Two threaded holes (9) are symmetrically distributed in a plane (12) of the basic fixing block, and the axis of each threaded hole (9) is perpendicular to the plane (12) of the basic fixing block. The first positioning bolt (5) and the second positioning bolt (11) are matched with the two threaded holes (9) of the basic fixing block (4) correspondingly. A through hole (10) is formed in the middles of side faces of the basic fixing block (4). One end of the connector (3) is connected with the through hole (10), and the other end of the connector (3) is fixedly provided with a gear sleeve (2). The gear sleeve (2) is provided with an internal spiral thread. A spiral thread (7) is arranged in the middle of the screw rod (1). The screw rod (1) is vertically screwed into the other end of the connector (3).

Description

technical field [0001] The invention relates to the technical field of mechanical repair tools, in particular to a detachable bolt extractor. Background technique [0002] When checking equipment or machines, it is often found that broken bolts are in the screw holes, and it is difficult to take out the broken bolts in the screw holes. The traditional removal method is to grind the end face of the broken bolt flat, then select a twist drill of appropriate specifications, drill a small hole in the center of the bolt fracture surface, insert the bolt extractor into the small hole, and clamp the bolt extractor with an adjustable wrench Turn the square head on the top counterclockwise forcefully, so as to drive the broken bolts in the equipment or machine and take them out. [0003] The cross-sectional area of ​​the traditional bolt extractor is small, and its strength is not high. When the axis of the bolt extractor is inconsistent with the axis of the broken bolt, the bolt ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/18
CPCB25B27/18
Inventor 付常伟荆承徐尚富王楠吴强
Owner SHANDONG IRON & STEEL CO LTD