CN203488524U

CN203488524U - Nut

Info

Publication number: CN203488524U
Application number: CN201320599018.9U
Authority: CN
Inventors: 吴荡; 牛益国; 李岩峰; 张孟琛
Original assignee: State Grid Corp of China SGCC; Qinhuangdao Power Supply Co of State Grid Jibei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Qinhuangdao Power Supply Co of State Grid Jibei Electric Power Co Ltd
Priority date: 2013-09-26
Filing date: 2013-09-26
Publication date: 2014-03-19
Anticipated expiration: 2023-09-26

Abstract

The utility model discloses a nut which comprises a nut body with threads, a screw head used for screwing the nut, and a screwing force torque security ring which is used for connecting the nut body and the screw head and can be fractured when receiving preset torque. The nut enables a user to visually judge whether the nut is fastened in place. The nut is simple in structure, simple and convenient to operate, reliable in performance and low in cost.

Description

Nut

Technical field

The utility model relates to a kind of tightening nut.

Background technique

Nut is conventional fastening piece, is widely used in the connection of various mechanical devices.But whether setter is often difficult to determine nut fastening putting in place in actual use, and while being therefore difficult to guarantee long-time use, bolt and nut can not become flexible automatically.And in some cases, becoming flexible, coming off of nut can cause serious accident, cause great casualties and economic loss.

Therefore, still lack at present and a kind ofly can make user judge whether the fastening nut putting in place.

Model utility content

In view of the foregoing defects the prior art has, problem to be solved in the utility model is to provide a kind of setter that makes can determine whether the fastening nut putting in place.

For addressing the above problem, the utility model provides a kind of nut, it comprises screwed nut body, for tightening the tappet head of described nut, and guarantees ring for connect screw-down torque described nut body and described tappet head and that rupture when being subject to predetermined torque.

As preferably, the specification of the screw thread of described nut body is M12 * 1.25.

The beneficial effect of nut of the present utility model is, can make user judge very intuitively whether fastening putting in place of nut, and nut structure of the present utility model is simple, easy and simple to handle, and reliable performance is with low cost.

Accompanying drawing explanation

Fig. 1 is the stereogram of nut of the present utility model;

Fig. 2 is the orthographic drawing of nut of the present utility model;

Fig. 3 is the sectional view of nut of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.

As shown in Figures 1 to 3, nut of the present utility model comprises, is with female nut body 2, for the hexagonal tappet head 1 of fastening nut, and guarantees ring 3 for the screw-down torque between attaching nut's body 2 and tappet head 1.As shown in Figure 3, compare nut body 2 and hexagonal tappet head 1, this screw-down torque guarantees that the wall of ring 3 is thinner, when being subject to predetermined torque, can rupture, and makes nut body 2 separated with tappet head 1.

In preferred embodiment of the present utility model, the screw thread of nut body 2 is fine thread, and its specification can be for example M12 * 1.25, because the pitch of fine thread is less, has better anti-loosening property.

For further improving the fastening effect of nut, in preferred embodiment of the present utility model, when nut of the present utility model is used for connecting connecting material, between nut body 2 and connecting material, be provided with lock washer (not shown), this lock washer for example can be three can machinery (Dalian) Machinery Co., Ltd. TOP-LOCK lock washer.

Screw-down torque of the present utility model guarantees that the concrete size (for example thickness of wall and height) of ring need be drawn according to test by those skilled in the art as required in actual production, to guarantee that screw-down torque is in claimed range.

When using nut of the present utility model, need first bolt, connecting material, lock washer, nut to be installed, with sleeve, entangle and tighten hexagon head 1 fastening nut, larger because tightening hexagon head 1 opposite side size, therefore sleeve can not block nut body 2, when moment reaches designing requirement, tighten hexagon head 1 and guarantee that from screw-down torque ring 3 disconnects, nut body 2 moment is on request tightened on bolt, and very reliable, user judges very directly perceived.

Certainly; the above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.

Claims

1. a nut, is characterized in that, comprises screwed nut body, for tightening the tappet head of described nut, and guarantees ring for connect screw-down torque described nut body and described tappet head and that rupture when being subject to predetermined torque.

2. nut as claimed in claim 1, is characterized in that, the specification of the screw thread of described nut body is M12 * 1.25.