CN2885798Y

CN2885798Y - Overwinding-resistance backstop

Info

Publication number: CN2885798Y
Application number: CN 200620072724
Authority: CN
Inventors: 高谦; 蒋同轩; 田造津; 李龙银
Original assignee: XUZHOU ZHONGKUANG BOHAO TECHNOLOGY Co Ltd
Current assignee: XUZHOU ZHONGKUANG BOHAO TECHNOLOGY Co Ltd
Priority date: 2006-04-25
Filing date: 2006-04-25
Publication date: 2007-04-04
Anticipated expiration: 2016-04-25

Abstract

The utility model relates to an anti-over-winding device used in mine. In the center of the anti-over-winding device provides a big-end-down cavity shaped guide slot, with which a couple of wedges with a gap on each are movable engaged. In the bottom of the wedge provided an up-direction blind hole, in which movably equipped a pressure anti-backward string, which continuously provided the wedge an upward elastic force. Through-holes are respectively provided on both upper and lower ends of the guide slot, and the steel wire is capable of getting through between the two wedges via these through-holes. When the lifting vessel is over-winded, the anti-over-winding device will be blocked by a buffer beam, and the wedges will close to the center part and grip the steel wire tightly via the frictional force, thereby stopping the movement of the lifting vessel and avoiding the negative direction motions. Cooperated with a non-return hook and the strength controllable anti-over-winding buffer beam, this anti-over-winding device is capable of resolving the problem that when over-winded, the lifting vessel utilized in the mine is attempt to moving downwards, efficiently. The anti-over-winding device can also be widely applied in other anti-over-winding systems or buffer systems, which has great application and promotion values.

Description

The overwinding-proof holdback

Affiliated technical field

The utility model relates to a kind of energy disperser, the overwinding-proof holdback that uses in especially a kind of mine.

Background technology

At present, in mine production system, one of the most frequently used scheme is maintained down-hole and aboveground contact by lifting container exactly, because lifting container is in busy production every day, the number of times of lifting is very frequent, in case reasons such as misoperation appear, and just usually the lifting container incoming terminal can take place the time, can not slow down timely, can become overwind trouble thereby make, the generation of this pulleying phenomenon usually can cause fatal crass's serious accident; At present, though in the domestic shaft hoisting system, some stop overwind devices also occurred, but still exist the relatively poor problem of reliability, stability and braking ability, the utility model promptly is that it has great practical value to in-problem a kind of improvement.

Summary of the invention

In order to overcome the shortcoming that stop overwind device exists in the mine, the utility model provides a kind of overwinding-proof holdback, this holdback is cooperating being used in combination of check Gua Hook and variable force formula overwinding-proof energy disperser, inverted running problem after the pulleying of lifting container in can highly effective solution mine, can well stop the generation of secondary accident after the pulleying, it is the effective facility that ensures the normal operation of lifting container, it can be widely used in the buffer system of overwinding-proof emergency system or other needs, and it has very big application and popularization value.

The technical scheme that its technical matters that solves the utility model adopts is: this holdback has a pair of up big and down small triangle contract piece (2), and it cooperates with tabular pedestal (3) and is slidingly installed; It is characterized in that: it is the tabular pedestal (3) of rectangle that this holdback has a profile, the center of pedestal (3), it is the guide groove (1) of a up-small and down-big cavity shape, in the guide groove, corresponding bearing fit the contract piece (2) that one space left in a pair of centre is installed, the bottom of contract piece (2) upwards has blind hole, that wherein slides is assembling the check spring (5) that has tension force, and it makes contract piece (2) that an elastic force that makes progress be arranged all the time; The upper and lower side of this guide groove (1) respectively has through hole, and this through hole can allow steel rope pass through in the middle of two contract pieces, when using lifting container, holdback is subjected to stopping of buffer beam, forces holdback to move downwards, by the friction of steel rope, drive contract piece (2) upward movement, because guide groove (1) top is very narrow, compressing contract piece is drawn close to the center, firmly clamps steel rope, make its stop motion, thereby prevent the inverted running after the pulleying.

Its beneficial effect is: this holdback is cooperating check Gua Hook and variable force formula overwinding-proof buffer in combination to use, the pulleying problem of lifting container in can highly effective solution mine, can well stop the generation of overwind trouble, it is the effective facility that ensures the normal operation of lifting container, it can be widely used in the buffer system of overwinding-proof emergency system or other needs, and it has very big application and popularization value.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and the embodiments;

Accompanying drawing 1 is the structural principle scheme drawing in the utility model front;

Accompanying drawing 2 is the structural principle scheme drawing of the utility model side;

Among the figure, 1 guide groove, 2 contract pieces, 3 pedestals, 4 end plates, 5 check springs, 6 bolts, 7 cover plates.

The specific embodiment

In Fig. 1,, during use, firmly fixing cover plate (7) and pedestal (3) by bolt (6) for the utility model removes the structural representation of the inside of cover plate (7).

In Fig. 1,2, after this holdback installed cover plate additional, what 2 contract pieces should still can slide in guide groove (1) moved, and the pressure that can not be subjected to this cover plate stops that during assembling, the thickness of contract piece (2) should be less than the thickness of pedestal (3).

In Fig. 1, the face that 2 contract pieces (2) contact with guide groove (1), should be smoothly and the angle of inclination consistent, after contract piece (2) was installed, 2 relative faces of contract piece should be parallel.

Claims

1 overwinding-proof holdback, this holdback have a pair of up big and down small triangle contract piece (2), and it cooperates with tabular pedestal (3) and is slidingly installed; It is characterized in that: it is the tabular pedestal (3) of rectangle that this holdback has a profile, the center of pedestal (3), it is the guide groove (1) of a up-small and down-big cavity shape, in the guide groove, corresponding bearing fit the contract piece (2) that one space left in a pair of centre is installed, the bottom of contract piece (2) upwards has blind hole, and that wherein slides is assembling the check spring (5) that has tension force; The upper and lower side of this guide groove (1) respectively has through hole.

2 overwinding-proof holdbacks according to claim 1 is characterized in that: the thickness of contract piece (2) is less than the thickness of pedestal (3).

3 overwinding-proof holdbacks according to claim 1 is characterized in that: after contract piece (2) was installed, the face that 2 contract pieces are relative was parallel.