CN210457064U - Mechanical anti-rope-overlapping protection device for single-rope winding type mine hoist - Google Patents

Abstract

The utility model relates to a mechanical anti-overlapping rope protection device for single rope winding type mine winder. The utility model aims at providing a simple structure, safe and reliable's a machinery is used for on single rope winding type mine winder prevents folding rope protection device to can prevent that wire rope from taking place to fold the condition of rope at mine winder operation in-process. The technical scheme of the utility model is that: the device is arranged beside a winding drum of a mine hoist and is provided with a fixed support and a limiting rod; the limiting rod is parallel to the central axis of the winding drum, the limiting rod is connected with a plurality of trigger rods, the trigger rods are parallel to each other and are perpendicularly connected to the limiting rod, the trigger rods are axially movably mounted on the fixed support through a plurality of guide rings sleeved on the trigger rods, limit switches are arranged at the ends, far away from the limiting rods, of the corresponding trigger rods, and the limit switches are connected in series into a safety loop of the mine hoist. The utility model is suitable for a safety arrangement of mine winder.

Description

Mechanical anti-rope-overlapping protection device for single-rope winding type mine hoist

Technical Field

The utility model relates to a mechanical anti-overlapping rope protection device for single rope winding type mine winder. The safety protection device is suitable for the mine hoist.

Background

The mine hoist is widely applied to various vertical shafts and is used for carrying people and lifting objects, the height of the vertical shafts of various hydroelectric engineering and coal engineering exceeds 500 meters, if any accident happens in the process of carrying people and lifting objects, inestimable loss can be caused, and therefore the mine hoist is important in safe operation, but according to the existing equipment and related safety inspection specifications, the defects are as follows:

1. the rope overlapping phenomenon can occur in the operation process of the mine hoist, and the reasons for the rope overlapping phenomenon of the steel wire rope are various, including the reasons that a steel wire rope sleeve is not suitable, the steel wire rope is not fixed properly, a base plate is not placed properly for increasing the diameter of a roller, the operation is too fast, and the like. Once the rope stacking phenomenon occurs, the steel wire rope can be broken due to uneven stress when the rope is stacked; also can lead to wire rope to resume normal again suddenly after folding several rings of rope to arouse rocking, the slope of carrying people cage or carrying thing well-bucket, serious probably arouse personnel to fall from the cage, or lead to thereby the sediment material in the well-bucket to drop in promoting and arouse the high altitude and fall the thing, cause the circumstances such as injury to the bottom of the well personnel.

2. According to AQ1035-2007 safety inspection standard for single-winding mine hoist for coal mine, the specification stipulates that there are various protection devices such as overwinding protection (overwinding protection: when the hoisting container exceeds the normal terminal stop position (or the departure platform) by 0.5m, the power can be automatically cut off, and the safety brake can be braked, non-overlapping rope protection), rope releasing protection, overspeed protection, speed limit protection, brake clearance protection, and the like, but there is no mechanical anti-overlapping rope protection device.

3. The number of layers of wire rope wound on a drum according to AQ1035-2007 safety inspection specification for single-winding mine hoist for coal mines 5.2.12 should not exceed the following regulations: a) 1 layer of lifting personnel or lifting personnel and materials in the vertical shaft; 2 layers special for lifting materials; b) 2 layers of lifting personnel or lifting personnel and materials in the inclined roadway; 3 layers special for lifting materials; c) lift personnel and materials during well construction, 2 layers. The specification has different rope winding requirements during the use and the well construction of a vertical shaft and a slant shaft, and the rope winding cannot be ensured to exceed 2 layers or 3 layers specified by the standard during the operation without a rope folding prevention mechanical protection device during the actual operation.

4. According to the research on the existing mine hoist in the market, the protection devices usually provided by manufacturers comprise safety protection functions of overwinding protection, rope loosening protection, reverse rotation protection, failure protection of a shaft encoder, speed limit protection of a full stroke, failure protection of a depth indicator, over-voltage and under-voltage protection of brake oil lubricating oil, tripping protection of a high-voltage switch, overcurrent protection of a host, given direction memory and the like, but a special mechanical anti-rope-overlapping protection device is not provided.

In summary, in the existing mine hoist equipment, no suitable mechanical anti-overlapping rope protection equipment on a special single-rope winding type mine hoist is available.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aiming at the existing problems, the mechanical anti-rope-overlapping protection device for the single-rope winding type mine hoist is simple in structure, safe and reliable, and can prevent the condition that a steel wire rope is overlapped in the operation process of the mine hoist.

The utility model adopts the technical proposal that: a mechanical anti-overlapping rope protection device for a single-rope winding type mine hoist is characterized in that: the device is arranged beside a winding drum of a mine hoist and is provided with a fixed support and a limiting rod;

the limiting rod is arranged in parallel to the central axis of the winding drum, a plurality of trigger rods are connected to the limiting rod, the trigger rods are parallel to each other and are vertically connected to the limiting rod, the trigger rods are axially movably mounted on the fixed support through a plurality of guide rings sleeved on the trigger rods, limit switches are arranged at the ends, far away from the limiting rod, of the corresponding trigger rods, and the limit switches are connected in series to a safety loop of the mine hoist;

initially, the distance between the central axis of the limiting rod and the central axis of the winding drum is R +1.9D + R, wherein R is the radius of the limiting rod, D is the diameter of the steel wire rope, and R is the radius of the winding drum.

The limiting rod faces to the central axis of the winding drum.

The central axis of the winding drum, the central axis of the limiting rod and the trigger rod are located in the same horizontal plane.

The utility model has the advantages that: when the rope of the mine hoist runs and the rope stacking condition occurs at any position of the winding drum, the abnormal protruding steel wire rope immediately touches the limiting rod, the trigger switch acts, the safety loop of the mine hoist acts, the mine hoist is braked and stopped, the accident expansion is avoided, and meanwhile, the winch monitoring interface displays the fault point.

Drawings

Fig. 1 is a side view of an embodiment.

Fig. 2 is a top view of the embodiment.

Detailed Description

As shown in fig. 1 and 2, the present embodiment is a mechanical anti-overlapping rope protection device for a single-rope winding type mine hoist, which is arranged beside a winding drum of the mine hoist, and comprises a fixed bracket 1, a limiting rod 2, a trigger rod 3 and a trigger switch.

The gag lever post 2 is arranged parallel to the central axis of the winding drum 4 in this embodiment, the length of the gag lever post 2 is similar to the width of the winding drum 4, and safety gaps are respectively left between the two ends of the gag lever post and the edge of the winding drum. Connect 2 triggering lever 3 on the gag lever post 2, parallel to each other between triggering lever 3 and the triggering lever 3, and triggering lever 3 connects perpendicularly in the both ends position of gag lever post 2. Each trigger rod 3 is axially movably arranged on the fixed support 1 through a front guide ring 6 and a rear guide ring 6 which are sleeved on the trigger rods, a limit switch is arranged at the end, far away from the limit rod 2, of each trigger rod 3, and the limit switches are connected in series into a safety loop of the mine hoist. In this example, the central axis of the drum 4, the central axis of the limit rod 2 and the axis of the trigger rod 3 are located in the same horizontal plane.

Initially, the distance between the central axis of the stop lever 2 and the central axis of the winding drum 4 is R +1.9D + R, where R is the radius of the stop lever, D is the diameter of the wire rope on the winding drum, and R is the radius of the winding drum.

The use and adjustment method of the embodiment comprises the following steps:

1. before the fixed support 1 is fixed, the height of the horizontal center of the winding drum 4 needs to be adjusted, and the upper surface of the support is kept horizontal.

2. The joint surface of the limiting rod 2 and the trigger rod 3 is polished to be smooth. When connecting each trigger rod 3 and gag lever post 2, keep every trigger rod 3 and gag lever post 2 to be 90 in the horizontal plane, the trigger rod 3 slides smoothly in mount guide ring 6, does not have the jamming.

3. The distance between the limiting rod 2 and the reel steel wire rope 5-0.9 d is adjusted, marking is carried out after the trigger rod guide ring 6, and the position of the bolt is limited by the trigger rod, so that the machine in a plant is prevented from running and vibrating, and the trigger rod 3 automatically slides.

4. And adjusting the position of the limit switch, and triggering the distance to ensure that the limiting rod 2 is linked with the trigger rod 3 to push the limit switch to reliably act when the reel steel wire rope 5 exceeds 0.9 d.

5. After the contacts of the limit switches are connected in series, the safety circuit of the mine hoist is accessed. Tests should be performed separately to ensure reliable operation.

6. The action state of the limit switch of the mine hoist enters the existing mine hoist software monitoring system, internal variables are called, and fault information is displayed on a configuration interface.

In the present embodiment, based on the example of a certain item in israel, the wire rope 5 on the reel 4 only winds one turn, and is stuck in most cases.

Claims (3)

1. A mechanical anti-overlapping rope protection device for a single-rope winding type mine hoist is characterized in that: the device is arranged beside a winding drum (4) of a mine hoist and is provided with a fixed support (1) and a limiting rod (2);

the limiting rod (2) is arranged in parallel to the central axis of the winding drum (4), a plurality of trigger rods (3) are connected to the limiting rod (2), the trigger rods (3) are parallel to the trigger rods (3), the trigger rods (3) are perpendicularly connected to the limiting rod (2), the trigger rods (3) are axially movably mounted on the fixed support (1) through a plurality of guide rings (6) sleeved on the trigger rods, limiting switches are arranged at the ends, far away from the limiting rod (2), of the corresponding trigger rods (3), and the limiting switches are connected in series to a safety loop of the mine hoist;

initially, the distance between the central axis of the limiting rod (2) and the central axis of the winding drum (4) is R +1.9D + R, wherein R is the radius of the limiting rod (2), D is the diameter of the wire rope on the winding drum (4), and R is the radius of the winding drum (4).

2. The mechanical anti-roping arrangement for use on a single-rope-wrap mine hoist as claimed in claim 1, wherein: the limiting rod (2) faces to the central axis of the winding drum (4).

3. The mechanical anti-roping arrangement for use on a single-rope-wrap mine hoist as claimed in claim 2, wherein: the central axis of the winding drum (4), the central axis of the limiting rod (2) and the trigger rod (3) are located in the same horizontal plane.

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