SU1247547A1 - Versions of arrangement for closing-off mine shaft - Google Patents

Abstract

1. A device for overlapping a shaft shaft, including a rotatable landing pad fixed on an axis in bearings on a shaft supporting shaft, kinematically connected to a drive and made with slots for passing hoisting ropes, and a safety stop for fixing the landing pad in a vertical plane, characterized in that, in order to increase operational reliability, safety of work by automatically fixing the landing site and ensuring uniform distribution of the top Local loads on the bearing bar of the shaft, the safety stop is made in the form of a two-arm drive lever with a hook in the center of it, and the landing pad has a stop to interact with the hook of the two-arm lever arm at the time of fixation, while the support beam is provided with an elastic sheet with friction pads, mounted on it to interact with the tail end of the landing pad, and the holes in the bearings are oval in the vertical direction. (L GOD. Sd 4

Description

2. The device according to claim 1, characterized in that the drive of the two shoulders is made in the form of a power cylinder with a spring-loaded rod pivotally connected to one shoulder of the two shoulders of the lever.

3. A device for blocking the shaft of the shaft, including a rotatable landing pad. A rail mounted on an axis in bearings on a shaft supporting shaft, kinematically connected to a drive and made with straps for passing hoisting ropes, and a safety stop for fixing the landing pad vertical helix, characterized in that, in order to increase operational reliability, safety of work by automatically fixing the landing pad and ensuring uniform distribution of the ikalnyh loads

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The invention relates to the equipment of mine hoisting installations and is intended to overlap the shaft of a mine when hanging and replacing hoisting ropes and vessels, testing the parachutes of the shaft cages and also performs the function of fire-fighting l.

The purpose of the invention is to increase operational reliability, safety of work by automatically fixing the landing site and ensuring uniform distribution of vertical loads on the supporting beams of the shaft.

FIG. 1 schematically shows a device in the first embodiment, a general view; in fig. 2 — node I in FIG. (with the image of the safety stopper of the first option); in fig. 3 - device according to the second variant, general view; in fig. 4 — node II in FIG. 3 (with the image of the safety stop according to the second variant).

The device for blocking the shaft of the shaft (the first option) includes a landing site 2 located at the zero mark of the barrel 1 (Fig. 1), which is hingedly mounted in the bearings 3 and is kinematically connected by a flexible link 4 to the drive 5, for example, a winch.

The landing platform 2 is a frame bearing structure made of I-beams 6 (Fig. 2), covered with a steel sheet 7, which is provided with slots 8 (Fig. 3) for passing the ropes 9 (Fig. 1) of the lifting vessel 10. Dimensions and the number of slots 8 correspond to the diameters and the number of ropes 9 of the lift shaft supporting beams, the safety stop is made in the form of a body, two two-arm clamping levers, hinged and symmetrically installed in it, and a double-acting driving wedge installed with the possibility of interaction With levers and landing pad from the dead point, while the supporting beam is provided with an elastic sheet with friction pads fixed on it to interact with the tail part of the landing pad, and the bearing holes are oval in the vertical direction.

4. The device according to claim 3, characterized in that the double-acting wedge drive is made in the form of a power cylinder, the rod of which is supported on the end face of the wedge.

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vessel 10. In the tail part of the landing site 2 the end of each beam 6 is welded to the pipe AND (Fig. 2), which contains the axis 12, located in bearings 3.

The holes 13 in the bearings 3 are made oval in the vertical direction to unload the axis 12 from the vertical loads of the landing pad 2. The pods 3 are fixedly mounted on one of the 0 support beams 14 fixed to the barrel 1, the pipe 11 being constantly supported on the beam 14 through an elastic sheet 15, for example a rubber-fabric tape.

Between the tail part of the landing pad 2 and the elastic sheet 15, friction pads 16, for example made of steel, are mounted with a certain pitch, fixed to the support beam 14, axes 17 and cotter pins 18.

0 The device also contains a safety stopper 19 (Fig. 1), which is a two-arm drive lever 20 (Fig. 2) with hook A located at the level w: Arm 21 21 of the arm 20, with the hinge 21 secured to the frame of the copra 22. A stop 23 is welded to the landing pad, which interacts with a hook L containing inclined section F and socket G. One arm B of lever 20 is pivotally connected to resiliently loaded, for example spring-loaded, rod of a power cylinder 24, and the second arm C is an output element of landing pad 2 of “Dead position. The device contains end-users / readers 25 and 26.

The device works as follows (the first option).

When lifting vessels, the landing pad 2 should be raised (retracted) to a vertical position before being filled at an angle of at least 92 ° and fixed by a safety stopper 19 (Fig. 1), and should also pass the lifting vessel 10 with a certain clearance. To change the lifting vessel 10, the landing pad 2 is lowered into a horizontal position and overlaps the section of the trunk section below the removable lifting vessel 10.

This operation occurs when the actuator 5 is turned on to weaken the flexible coupling 4, and at the same time the working medium is fed into the thrust cavity of the power cylinder 24.

When the lever 20 is rotated relative to the joint 21, the hook L is disconnected from the stop 23, followed by the action of the shoulder C on the landing pad 2 to bring it out of the "dead position."

In the horizontal position, the landing pad rests on the elastic sheet 15 of the second support beam 14 and acts on the limit switch 25 to turn off the drive 5 and provide a signal permitting control of the lifting vessel 10, as well as to stop the supply of working medium to the power cylinder 24 and communicate its cavities with atmosphere or hydraulic tank. Under the action of the spring, the stem returns to its original position and retracts the double-shoulder lever to its original position. Then the lifting vessel 10 is lowered onto the landing device for hanging and replacing the lifting ropes and vessels.

Supporting the landing pad through the elastic sheet 15 contributes to a uniform distribution of vertical loads on the support beams 14, and the presence of friction {x gaskets 16 reduces friction between the elastic material 15 and the tail section of the landing pad when it rotates in a vertical plane and thereby increases the durability of the elastic sheet 15.

When you turn on the drive 5 in the direction of lifting the landing site is its rotation in the vertical plane.

In the process of approaching the landing pad 2 to the vertical position, the stop 23 interacts with the inclined section F of the hook A of the safety catch of the stopper 19 and deflects the lever 20 from the vertical position.

At the moment of alignment of the stop 23 with the socket G of the hook A, the lever is spontaneously installed in a vertical position, and accordingly the automatic locking of the tilted position of the landing pad 2 occurs. In the tilted position, the landing pad acts on the limit switch 26, which turns off hoist control 10.

0 The device (the second option) includes a landing platform 2 (Fig. 3) of the frame structure, installed in the supports 3, kinematically connected by a flexible traction connection 4 with the drive 5. The device also contains a safety stopper 27, which is articulated with hinges case 28 two opposing symmetrical two-shoulder clamping levers interacting with a driving wedge of a double-sided action 30 placed between them, abutting with its face on the jaws 31 of the power cylinder 32 and being the output element of the landing n oschadki of "dead position. Each lever 29 is made with a broken surface configuration directed toward the wedge 30. This surface contains a gripping section of the landing pad made with a ledge Q, and the end of each lever 29 has a bevel S. The angle of the bevel of the wedge 30 directed toward the shaft 31

0 with a restrictive shoulder R, equal to the angle of self-braking.

The device works as follows (the second option).

To lower the landing pad into horizontal position, turn on the water 5 and simultaneously supply the working medium to the cavity of the power cylinder 32. In this case, the wedge 30 spreads the levers 29, and then abuts the landing pad and leads it out of the dead position, after which the shaft 31 resists restrictive collar R.

In the horizontal position of the landing pad, the end switch 25 shuts off the supply of the working medium to the power cylinder 32 and its cavity communicates with the atmosphere or the oil tank through the distributor (spool), and the drive 5 is also de-energized.

When the landing pad is lifted, it comes into contact with the wedge 30, as a result of which it returns, together with the rod 31, to the starting position of the raised platform and, acting on the levers 29, rotates them to fix the landing pad.

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Claims (4)

1. A device for blocking the shaft of the shaft, including a rotatable landing pad, mounted on an axis in bearings on the support beam of the shaft of the shaft, kinematically connected to the drive and the lifting vessels, and a safety stopper for fixing the landing pad in a vertical plane, characterized in that, in order to increase operational reliability and safety of work by automatically fixing the landing site and ensuring uniform distribution of vertical loads on the supporting beams of the shaft You, the safety stopper is made in the form of a two-shouldered drive lever with a hook in its center, and the landing pad has a stop for its interaction with the two-shouldered drive hook at the moment of fixation, while the support beam is equipped with an elastic sheet with friction linings fixed on it to interact with the tail part of the landing pad, and the holes in the bearings are oval in the vertical direction, filled with slots for passing ropes SU „„ 1247547 2. The device according to π. 1, characterized in that the two-shouldered lever drive is made in the form of a power cylinder with a spring-loaded rod pivotally connected to one shoulder of the two-shouldered lever. 3. A device for blocking the shaft of the shaft, including a rotatable landing pad, mounted on an axis in bearings on the support beam of the shaft of the shaft, kinematically connected to the drive and made with slots for passing the ropes of the lifting vessels, and a safety stopper for fixing the landing pad in a vertical plane, different the fact that, in order to increase operational reliability, safety of work by automatically fixing the landing site and ensuring uniform distribution of the vertical loads on the support beams of the shaft of the mine, the safety stopper is made in the form of a housing, two two-arm clamping levers mounted in it pivotally and symmetrically, and a double-acting drive wedge installed with the ability to interact with the levers and bring the landing pad off the ground, while supporting the beam is equipped with an elastic sheet with friction linings mounted on it for interaction with the tail of the landing pad, and the bearing holes are oval in vertical direction phenomenon. 4. The device according to p. 3, characterized in that the drive of the wedge is double-acting made in the form of a power cylinder, the rod of which is supported on the end of the wedge.