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Check bolt

A technology of anti-loosening bolts and fastening bolts, which is applied in the direction of bolts, screws, nuts, etc., and can solve problems such as vibration, difficulty in fastening, and large amount of coal passing through

Inactive Publication Date: 2016-01-13
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The bridging slots, convex slots, connecting slots and hinged slots of the ultra-heavy-duty bridge-type reloading frame bridge section of the underground working face of the coal mine are connected by ordinary bolts. Large, and often accompanied by large pieces of gangue and lump coal, causing severe vibration, the bolts connecting the grooves often loosen, because the bolts with large specifications (M72) are not easy to fasten when loosened, there is a large security risks

Method used

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Embodiment Construction

[0020] An anti-loosening bolt, including a fastening bolt 1 and a fastening nut 2 threadedly engaged with the fastening bolt 1, and also includes two semicircular blocks 4 fastened on the screw rod of the fastening bolt 1, two semicircular The ends of the ring block 4 are locked on the screw rod of the fastening bolt 1 through the locking bolt 7 and the locking nut 8; one end of the fastening nut 2 is obliquely cut with a convex self-locking surface 3 up and down, two The same end of the semi-circular block 4 is chamfered inwardly with a concave self-locking surface 5 which is fastened with the convex self-locking surface 3 .

[0021] During specific implementation, the tightening bolt 1 screw rod opposite to the locking bolt 7 screw rod is provided with an annular anti-retreat groove 6 along the circumference, and the locking bolt 7 screw rod is only located in the anti-retreat groove 6 . When the locking bolt 7 and the locking nut 8 become loose during use, the screw rod of ...

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Abstract

The invention relates to the field of mechanical fastening pieces, in particular to a check bolt. The check bolt comprises a fastening bolt and a fastening nut in threaded fit with the fastening bolt, and further comprises two semicircular clamping blocks buckled on a fastening bolt screw rod, wherein the end parts of the two semicircular clamping blocks are locked on the fastening bolt screw rod through a locking bolt and a locking nut; one end of the fastening nut is vertically and oppositely beveled with convex self-locking surfaces; and the same ends of the two semicircular clamping blocks are inclined beveled with concave self-locking surfaces tightly fitting the convex self-locking surfaces. When the check bolt guarantees the check effect, once the fastening bolt is loosened, the fastening is convenient; and the check bolt is particularly suitable for an underground working surface extra-heavy reversed loader.

Description

technical field [0001] The invention relates to the field of mechanical fasteners, in particular to an anti-loosening bolt. Background technique [0002] The bridging slots, convex slots, connecting slots and hinged slots of the ultra-heavy-duty bridge-type reloading frame bridge section of the underground working face of the coal mine are connected by ordinary bolts. Large, and often accompanied by large pieces of gangue and lump coal, causing severe vibration, the bolts connecting the grooves often loosen, because the bolts with large specifications (M72) are not easy to fasten when loosened, there is a large security risks. In order to ensure the connection strength between the grooves of the bridging section, there is an urgent need for a special anti-loosening bolt, which is easy to operate when tightening under the premise of ensuring the anti-loosening effect. Contents of the invention [0003] In order to solve the problem of bolt loosening, the present invention...

Claims

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Application Information

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IPC IPC(8): F16B39/02
Inventor 赵芳强杨继忠刘前坤张豫祁灵通徐凯李淑君
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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