SU58407A1 - Mine Bucket Guide Frame - Google Patents

Description

When conducting vertical shafts, the ascent is carried out mainly by creeks moving along wooden or cable guides.

In order to avoid swaying of the buckets, and at the same time achieving the latter higher speeds of movement, usually guide frames are used, equipped for this purpose either with legs, covering wooden conductors, or sliders for sliding along the ropes.

The guide frames are usually free to sit on the hoisting rope, resting on the last coulter of the hook, not being directly connected to either the ropes or the tub. When the bucket is lowered, the guide frame, at an appropriate distance from the bottom, meets a special stop, lowers it and is delayed, and the tub, thanks to this from the conductors, continues to follow to the slaughter. Tubular lifting equipment with such loosely fitting frames is widely used, recommended by special mining literature and does not meet with objections from mining legislation. Meanwhile how practice

and theoretical considerations clearly indicate the dangers of using such devices; it is enough that during the descent of the bucket the guide frame encounters any obstacle, for example, in the form of conductor wires that are bent over or in the form of ice formed on the latter, as it stops („hang”), the tub will freely go down the normal speed ; after a certain time, the frame, having overcome an obstacle, sabers and, freely falling and acquiring at the same time a very significant manpower, will catch up with the bucket. The destructive work of the falling frame is so significant that it usually ends with the deformation of the entire beginning part and the break of the rope with the subsequent fall of the tub.

The proposed device aims to eliminate this disadvantage. To do this, it is based on the following starting points:

1. The frame should be connected all the time to the rope and be disconnected from it only if and where it is provided.

2. The frame, sitting down on the tensioner beams, should signal that the bat has left the rails and is heading towards the face.

The need to implement the first position is in itself understandable, for it can eliminate the "freezing of the frame in the conductors; the expediency of the second position requires some explanation.

When working in the face of penetration, especially during harvesting, requiring the greatest number of workers, there are often accidents caused by the injury of workers by a descending tub; this is because, due to the specific working conditions (bottom dimensions), the sinkers have to move, being placed under the so-called bucket course, and there is enough signal strength, untimely departure of the worker, in order for an accident to occur; in tunneling practice, accidents are also known not only from bumps in the tub, but also from workers falling into the shakht unexpectedly caught by the tub during repair of the air duct.

Such accidents can be warned with the sound alarm device, warning of the exit of the tub from the rails and its following to the slaughter.

In order to fulfill the first of these two positions, the guide frame for mine buckets according to the invention is provided with clamps blocking it with a lifting rope and automatically releasing the rope when the frame is fitted on the supports at the end of the guide rails, the clamps being in the form of eccentrics symmetrically arranged associated with pivot arms that interact with cushions at the end of the guide tires.

In FIG. 1 shows a general view of a guide frame according to the invention; FIG. 2 shows a section along AB of FIG. j fig. 3 shows the position of the levers of the clamping device when the guide frame is seated on the channel bars of the tension frame; FIG. 4 - the position of the levers at different positions of the frame; FIG. 5 - clamping device; FIG. 6 is a section through EC of FIG. five; FIG. 7 - signaling device; FIG. 8 is a plan of its location on a tension frame.

As can be seen from the drawing, on the lower cross-frame, on the one and the other side of the lifting round rope, two steel eccentrics 7 are mounted, which sit on the axes 2. The eccentrics on their curved surface facing the rope have a shallow corrugation. On axis x 2, on both sides of the cross member, the pivoting levers 3 of flat iron were strengthened. When the bucket is lowered along the cable guides, the eccentrics tightly clamp the rope under the influence of the weight of the bucket, the trailer hitch and the anchor part of the rope, in this case playing the role of wedges and thus as if tying the bucket to the frame.

Pressing eccentrics also contribute to two weak symmetric springs 5, fastened to them by means of corners with bolts passed through them with eyelets.

At the time of the meeting, obstacles, in the form of tensioning channels, playing the role of supports, levers raise and eccentrics to the sides, which ensures free passage of the rope and movement of the tub to the slaughter. When lifting the tank, approaching the tensioning device, picks up the frame, with the levers 5 and the eccentrics / coming to the same position.

The circuit shown in FIG. 4 gives an intimate understanding of the operation of the clamping device, illustrating three things:

The first position is that the guide frame moves with the tub; hoisting rope clamped.

The second position is that the guide frame sits on the pads; hoisting rope begins to loose.

The third position is the guide frame on the pads; rope released from clamping; the bat continues to slaughter.

It has already been mentioned above that the occurrence in the face of a tub without warning can be a cause of elevation. In order to notify the workers that the frame of the village was, and that the bat had left the guides and was moving towards the face, a sound alarm was installed. The alarm device is shown in FIG. 7. On the pads, which the levers 3 strike upon landing the frame, two rotary levers 6 made of flat iron, reinforced at the ends with steel strikers, 7 are reinforced 7. In the quiescent state, the ends of the levers 6 with strikers are lowered onto the stops from j of the angular Iron; when the frame is seated on the channels, the latter encounters i free ends of the levers 6, and boi ki 7, lift it up and strike the bell 8 fixed on the I-beams of the tension frame. The ends of the arms, perceiving the impact of the frame, are processed in the form of blades

not shown), which gives stability to the frame, partially resting on them, and also increases the service life of the levers.

The subject invention.

Claims (2)

1. A guide frame for mine buckets, characterized in that it is provided with clips / which block it with a lifting rope and automatically release the rope when the frame is seated on the pillows at the end of the guideways. 2. The form of the frame according to claim 1, characterized in that the clamps are implemented in the form of symmetrically arranged eccentrics associated with pivoting levers 3, interacting with the pads at the end of the guides. g GN 00. i ::. And b teC and about 4 about PH C n m her