CN201953791U

CN201953791U - Torsion control gasket

Info

Publication number: CN201953791U
Application number: CN2011200540872U
Authority: CN
Inventors: 陈纪平; 张民; 张宝根; 顾青丽; 奚凯凯
Original assignee: SHANGHAI SHENGUANG HIGH STRENGTH BOLTS CO Ltd
Current assignee: SHANGHAI SHENGUANG HIGH STRENGTH BOLTS CO Ltd
Priority date: 2011-03-03
Filing date: 2011-03-03
Publication date: 2011-08-31
Anticipated expiration: 2021-03-03

Abstract

The utility model relates to a torsion control gasket, which comprises a body, wherein the body is a circular ring, a screw bolt can pass through the middle of the circular ring, four round convex objects A and four round convex objects B are uniformly distributed on the same circumference of one side of the circular ring and are arranged at intervals, the four round convex objects A are higher than the four round convex objects B, and the carrying area of the round convex objects A is greater than the carrying area of the round convex objects B. The torsion control gasket has the beneficial effects that compared with other torsion control modes, the torsion control gasket has the advantages that the torsion control gasket is simpler and more convenient and visualized, and is easy to control and operate.

Description

Packing ring is turned round in control

Technical field

The utility model relates to a kind of packing ring, relates in particular to a kind of packing ring that is applied in the large-diameter and high-strength bolt.

Background technique

Wind-powered electricity generation large-diameter and high-strength bolt in work progress, because specification is big, adopted the wrest fixing spanner construction originally always, and this mode adds that each tame unit of lubricating system is not quite similar owing to be difficult to Control Shaft power, so super stubborn phenomenon often takes place.The super stubborn meeting of high-strength bolt produces very big danger, the lighter's bolt fracture, and weight person is collapsed because of bolt fracture causes the bed rearrangement unit, brings casualties.

The form of construction work of high-strength bolt generally all adopts after smearing lubricating grease on bolt thread or the supporting surface at present, twists firm bolt, nut with turning round hydraulic spanner surely.This mode relatively is applicable to diameter less than the construction of the bolt of 36mm, on this diameter, with regard to difficult to control its power.

For solving the axle power problem of big specification bolt in work progress, be necessary to design a kind of control and turn round packing ring.

Summary of the invention

The utility model technical issues that need to address have provided a kind of control and have turned round packing ring, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: body; Described body is the annulus that bolt can be passed in a centre; Four A that evenly distribute on the same circumference of described annulus one side protrude the circle thing and four B protrude the circle thing; Described four A protrude the circle thing and four B protrusion circle things are spaced; Described A protrudes the circle object height and protrudes the circle thing in four B; Described A protrudes the loaded area of the loaded area of circle thing greater than four B protrusion circle things.

Compared with prior art, the beneficial effects of the utility model are: compared to the mode of other control construction torsion, easier, directly perceived, easy to control, easy to operate.

Description of drawings

Fig. 1 is a prior art middle washer structural representation.

Fig. 2 is the lateral plan of Fig. 1.

Fig. 3 is the utility model structural representation.

Fig. 4 is that the D-D of Fig. 3 is to view.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

By Fig. 3, Fig. 4 as seen: the utility model comprises: body 1; Described body 1 is the annulus 2 that bolt can be passed in a centre; Four A that evenly distribute on the same circumference of described annulus 2 one sides protrude circle thing 21 and four B protrude circle thing 22; Described four A protrude circle thing 21 and four B protrusion circle things 22 are spaced; Described A protrudes circle thing 21 and is higher than four B protrusion circle things 22; Described A protrudes the loaded area of the loaded area of circle thing 21 greater than four B protrusion circle things 22.

A protrudes circle thing 21 and exceeds height between 1.0mm～2.5mm than B protrusion circle thing 22; B protrudes circle thing 22 and A protrudes the ratio of circle thing 21 loaded areas between 0.4～0.8.

The utility model can be to super stubborn the playing a protective role of big specification bolt, and owing to twist and play warning effect bolt.Plain washer of the prior art surface does not have bump (as Fig. 1, Fig. 2), and its effect only provides a more smooth supporting plane, does not have other any effects.

The utility model has utilized metal can produce the power of plasticity_resistant deformation when being under pressure, when the torsion when construction increases gradually, the A bump can produce plastic deformation, when the height of distortion back A bump is consistent with the height of B bump, the plasticity drag of A reaches peak value, at this time Shi Gong torsion just reaches the required torsion that tights a bolt, and the builder can rely on the observation of naked eyes, judges that can stop construction this moment.If the builder does not stop construction, the A bump just begins to produce irreversible shear deformation (shearing force is greater than plastic deformation force) so, and the B bump also begins to produce plastic deformation, and at this time, the fastener shaft power of bolt still can be controlled in the scope of design.In case disconnected but the A bump is sheared, because the loaded area of B bump is littler than A bump, therefore the construction torsion that is applied can be sheared disconnected B bump rapidly, makes A, B bump be depressed into the C plane together, this moment is just super stubborn, and this auxiliary connection lost efficacy.

Principle of the present utility model derives from the safety block of press machine, and safety block is being no more than within the pressure of setting, and the bump of safety block can down not come off.In case surpass the pressure range of setting, bump can down come off voluntarily, plays safety effect.

Claims

1. packing ring is turned round in a control, comprising: body; Described body is the annulus that bolt can be passed in a centre; It is characterized in that: four A that evenly distribute on the same circumference of described annulus one side protrude the circle thing and four B protrude the circle thing; Described four A protrude the circle thing and four B protrusion circle things are spaced; Described A protrudes the circle object height and protrudes the circle thing in four B; Described A protrudes the loaded area of the loaded area of circle thing greater than four B protrusion circle things.

2. packing ring is turned round in control according to claim 1, it is characterized in that: described A protrudes the circle thing and goes out height between 1.0mm～2.5mm than B protrusion circle object height; Described B protrudes the circle thing and A protrudes the ratio of circle thing loaded area between 0.4～0.8.