CN2873719Y

CN2873719Y - Speed limit anti-falling device

Info

Publication number: CN2873719Y
Application number: CN 200620023705
Authority: CN
Inventors: 庞志合
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-10
Filing date: 2006-03-10
Publication date: 2007-02-28
Anticipated expiration: 2016-03-10

Abstract

The utility model relates to a safety catch for mine hoist, in particular to a speed limiting safety catch, the utility model comprises a drill key, a passive extrusion and a guide rope which provides a main pulley block and a second pulley block in the two sides for clamping the guide rope, the main pulley block coaxially arranged a milling cam which constructed a overdrive is clutched with the main pulley block. The bottom passive extrusion is equipped a transverse jack which the outside is articulated with a support arm and the inner end is operated with a neck of the drill key, the bottom support arm is fixed with a rotation shaft and the upper support arm is movable fitted with the milling cam, the drill key is fixed between the passive extrusion and the guide rope through a compression spring and a handgrip is provided on the drill key. The implementation of safety catches function is determined by the gliding speed of bucket which glides along the guide rope. Any problems in device unit or manual operation can make the bucket automatic shutdown when the bucket hypervelocity threaten to the life. Compared with the prior art, the assurance coefficient is highly enhanced.

Description

The speed limit falling protector

Technical field:

The utility model relates to the mine hoist falling protector, particularly a kind of speed limit falling protector.

Background technology:

The mine hoist system generally forms by carrying bucket, steel rope, winch, guide rope, falling protector etc., falling protector wherein by and carry the fixing passive pressing body of bucket beam, by rod control drift, be loaded on the compression spring of carrying between bucket beam and leverage and constitute.The falling protector of this structure only disconnects breaking away from steel rope and carries under the situation of bucket, and compression spring is just stretched out, and makes leverage promotion drift wedge passive pressing body and clamps guide rope, will carry bucket and having fixed anti-fall effect; And under winch situation out of control, carrying bucket and doing the movement of falling object, steel rope, winch lag behind and can't realize that compression spring stretchs out, and falling protector does not play anti-fall effect.In actual production, it is on and off duty that gig is mainly used in the borehole operation workman, and the probability that steel rope is opened is small, and winch is malfunctioning, the operative employee slips up, external infringement is inevitable, the casualty accident that causes thus is maximum, is the insoluble problem of present falling protector.

Summary of the invention:

Goal of the invention of the present utility model is intended to solve existing falling protector and has only disconnected anti-fall effect, do not had the disadvantage of anti-fall effect in the winch brake failure at steel rope, and provides a kind of because of all reaching the speed limit falling protector of the anti-fall effect of safety under the situations such as steel rope is disconnected, winch brake failure, crane man misoperation.

The technical scheme that realizes the foregoing invention purpose is: this speed limit falling protector comprises drift, passive pressing body, guide rope, these guide rope both sides are equipped with the major and minor pulley that clamps guide rope respectively, this head pulley is coaxial to be equipped with cam with its formation fee engine clutch, this passive pressing body lower end is provided with horizontal very heavy, a this very heavy outer end and a support arm are hinged, draw-in groove inner and on the drift cooperates, this support arm lower end and rotating shaft are fixed, upper end and this cam running-fit, this drift is loaded between guide rope and the passive pressing body by compression spring, and handle is housed on it.

According to the described speed limit falling protector of this case, the realization of its anti-drop function is to determine along the speed that guide rope glides to carry bucket.No matter the slave unit parts are operated each link to the workman any problem occurs, as long as put forward bucket hypervelocity life is constituted a threat to, and it will work to make and carry bucket and stop automatically.Compare with existing falling protector, its safety factor improves greatly.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

The specific embodiment:

Provide a specific embodiment of the present utility model below in conjunction with accompanying drawing.

The described speed limit falling protector of present embodiment is by head pulley 1, auxiliary pulley 2, cam 3, support arm 4, very heavy 5, rotating shaft 6, drift 7, compression spring 8, handle 9, passive pressing body 10, hold out against spring 11, cabinet 12, guide rope 13 is formed, it with carry the bucket beam 14, winch 15, steel rope 16 constitutes the mine hoist system, these guide rope 13 both sides are equipped with head pulley 1 and the auxiliary pulley 2 that clamps guide rope 13 respectively, this head pulley 1 is coaxial to be equipped with cam 3 with its formation fee engine clutch, these passive pressing body 10 lower ends are provided with horizontal very heavy 5, these very heavy 5 outer ends and a support arm 4 are hinged, draw-in groove inner and on the drift 7 cooperates, these support arm 4 lower ends and rotating shaft 6 are fixing, upper end and these cam 3 running-fits, this drift 7 is loaded between guide rope 13 and the passive pressing body 10 by compression spring 8, and handle 9 is housed on it.

The rotating shaft 6 of the described head pulley 1 of present embodiment, auxiliary pulley 2 and support arm 4 is installed in and carries bucket beam 14, passive pressing body 10 fixedly on the all-in-one-piece cabinet 12, and wherein 2 of auxiliary pulley are movable installation, is equipped with between the tank wall of itself and cabinet 12 and holds out against spring 11.

Described and drift 7 bonded assemblys hold out against the tank wall of spring 11 one ends and cabinet 12 and fix.

Principle of work: adjust, set linear velocity in advance, when head pulley 1 rotating speed surpasses setting range, fee engine clutch works, cam 3 rotates extrapolation support arm 4, very heavy 5 are pulled out by support arm 4, make the drift 7 that is ready up on passive pressing body 10 inclined-planes, the promotion lower edge of compression spring 8, it is stuck with guide rope 13 to carry bucket.It is up to carry bucket during releasing, pulls down fixed handle 9, and drift 7 roof pressure compression springs 8 make very heavy 5 the inners block draw-in groove on the drift 7, recover normal lifting state.

Claims

1, a kind of speed limit falling protector, comprise drift, passive pressing body, guide rope, it is characterized in that these guide rope both sides are equipped with the major and minor pulley that clamps guide rope respectively, this head pulley is coaxial to be equipped with cam with its formation fee engine clutch, this passive pressing body lower end is provided with horizontal very heavy, a this very heavy outer end and a support arm are hinged, draw-in groove inner and on the drift cooperates, this support arm lower end and rotating shaft are fixed, upper end and this cam running-fit, this drift is loaded between guide rope and the passive pressing body by compression spring, and handle is housed on it.

2, speed limit falling protector according to claim 1, the rotating shaft that it is characterized in that described head pulley, auxiliary pulley and support arm is installed in and carries bucket beam, passive pressing body fixedly on the all-in-one-piece cabinet, wherein the auxiliary pulley axle is movable installation, is equipped with between itself and cabinet tank wall and holds out against spring.