CN112723087A

CN112723087A - Overwinding-preventing automatic control system for capital construction mine hoisting machine

Info

Publication number: CN112723087A
Application number: CN202011373271.3A
Authority: CN
Inventors: 吴大川; 吴永强; 罗业民; 庞博; 曹玉涛; 李成斌; 朱小霖; 罗杨; 曾莉; 赵永银; 陈海军; 吕永飞; 甘敏浩
Original assignee: Hebei Iron and Steel Group Mining Co Ltd
Current assignee: Hebei Iron and Steel Group Mining Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-04-30

Abstract

The invention relates to an overwinding prevention automatic control system of a capital construction mine hoist, and belongs to the technical field of mine equipment. The technical scheme of the invention is as follows: the first touch point (1) is arranged at the terminal parking level of the operation of the elevator, is 0.2m above the cage (5), and is connected with the first travel switch (3); the second touch point (2) is arranged at the stop level of the terminal of the operation of the elevator, is 0.4m below the balance weight, and is connected with the second travel switch (4); and the travel switch I (3) and the travel switch II (4) are connected in parallel and then are connected with a main safety control loop of the lifter. The invention has the beneficial effects that: the elevator is controlled to stop running by setting a touch point and a travel switch so as to avoid the occurrence of overwinding accidents; the installation is nimble, and the setting is simple, and economy is high-efficient, and safety and stability can effectively prevent the emergence of ground lifting machine overwinding accident, can provide the powerful guarantee for mine lifting machine's safe operation.

Description

Overwinding-preventing automatic control system for capital construction mine hoisting machine

Technical Field

The invention relates to an overwinding prevention automatic control system of a capital construction mine hoist, and belongs to the technical field of mine equipment.

Background

When a mine is built in a well-digging capital construction period and a skip (cage) is horizontally stopped at a terminal in the operation of a hoisting machine, the operation stopping reaction time is short, and once human misoperation occurs, overwinding accidents are easily caused.

Disclosure of Invention

The invention aims to provide an overwind prevention automatic control system of a capital construction mine hoist, which controls the hoist to stop running by setting a touch point and a travel switch so as to avoid overwind accidents; the installation is nimble, and the setting is simple, and economy is high-efficient, and safety and stability can effectively prevent ground lifting machine overwinding accident's emergence, can provide strong guarantee for mine lifting machine's safe operation, has solved the above-mentioned problem that exists in the background art effectively.

The technical scheme of the invention is as follows: an overwinding prevention automatic control system of a capital construction mine hoist comprises a first touch point, a second touch point, a first travel switch, a second travel switch, a cage and a balance weight, wherein the first touch point is arranged at the terminal parking level of the operation of the hoist, and is 0.2m above the cage; the second touch point is arranged at the stopping level of the running terminal of the elevator, is 0.4m below the balance weight and is connected with the second travel switch; and the first travel switch and the second travel switch are connected in parallel and then are connected with a main safety control loop of the lifter.

The travel switch comprises a travel switch body, a travel switch body and a touch point I, wherein the travel switch body is connected with the travel switch body; the touch point IV and the touch point II are arranged horizontally, and the touch point IV is connected with the travel switch IV; the first travel switch, the second travel switch, the third travel switch and the fourth travel switch are connected in parallel and then connected with a main safety control loop of the lifter.

The touch point I, the touch point II, the touch point III and the touch point IV are mechanical touch points, and the touch point bearing is of a detachable structure.

The invention has the beneficial effects that: the elevator is controlled to stop running by setting a touch point and a travel switch so as to avoid the occurrence of overwinding accidents; the installation is nimble, and the setting is simple, and economy is high-efficient, and safety and stability can effectively prevent the emergence of ground lifting machine overwinding accident, can provide the powerful guarantee for mine lifting machine's safe operation.

Drawings

FIG. 1 is a schematic view of an installation of a touch point according to the present invention;

FIG. 2 is a schematic view illustrating the installation of a second touch point according to the present invention;

FIG. 3 is a circuit diagram of the travel switch and the main safety control loop of the hoist according to the present invention;

FIG. 4 is a diagram illustrating a touch point structure according to the present invention;

in the figure: the device comprises a first touch point 1, a second touch point 2, a first travel switch 3, a second travel switch 4, a cage 5, a balance weight 6, a third touch point 7, a fourth touch point 8, a third travel switch 9, a fourth travel switch 10, a steel beam 11, a ground plane 12 and a travel switch connecting rope 13.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the drawings of the embodiments, and it is obvious that the described embodiments are a small part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

An overwinding prevention automatic control system of a capital construction mine hoist comprises a touch point I1, a touch point II 2, a travel switch I3, a travel switch II 4, a cage 5 and a balance weight 6, wherein the touch point I1 is arranged at the terminal parking level of the operation of the hoist, the position 0.2m above the cage 5 is connected with the travel switch I3; the second touch point 2 is arranged at the stopping level of the running terminal of the elevator, is 0.4m below the balance weight, and is connected with the second travel switch 4; and the travel switch I3 and the travel switch II 4 are connected in parallel and then are connected with a main safety control loop of the lifter.

The device also comprises a touch point III 7, a touch point IV 8, a travel switch III 9 and a travel switch IV 10, wherein the touch point III 7 and the touch point I1 are arranged horizontally, and the touch point III 7 is connected with the travel switch III 9; the fourth touch point 8 and the second touch point 2 are arranged horizontally, and the fourth touch point 8 is connected with the fourth travel switch 10; the first travel switch 3, the second travel switch 4, the third travel switch 9 and the fourth travel switch 10 are connected in parallel and then connected with a main safety control loop of the lifter.

The touch point I1, the touch point II 2, the touch point III 7 and the touch point IV 8 are mechanical touch points, and the touch point bearing is of a detachable structure.

In practical application, as shown in fig. 1, a touch point 1 is arranged at a position 0.2m above a parking terminal of a cage, once a brake fails at a horizontal main shaft of the terminal, a skip bucket (cage) moves upwards to contact the touch point 1, and a travel switch 3 gives a main safety control loop signal of a lifter to control the lifter to stop running, so that the phenomenon of overwinding due to untimely manual operation reaction is avoided.

As shown in fig. 2, a touch point two 2 is set at a position 0.4m below a balance weight stop point corresponding to a cage stop point position, once a skip (cage) continues to move upwards through the touch point one 1 in fig. 1, the balance weight moves downwards to contact the touch point two 2, a travel switch two 4 gives a signal to a main safety control loop of the elevator again to control the elevator to stop running immediately, and two-stage control points form multi-stage control, so that overwinding accidents are effectively avoided.

If meet the environment that the lifting machine is located badly, on the basis of above-mentioned multistage control, for the guarantee safety, can set up the closed loop multistage return circuit of redundancy nature, set up touching point three 7 at touching point one 1 with the level, set up touching point four 8 at touching point two 2 with the level, its circuit connection is as shown in fig. 3: when the cage contacts the first touch point 1 or the third touch point 7, the first travel switch 3 or the third travel switch 9 is closed, a main safety control loop signal is given to the elevator, and the elevator is controlled to stop running. If the control instruction of the first touch point 1 or the third touch point 7 fails, the balance weight contacts the second touch point 2 or the fourth touch point 8, and the second travel switch 2 or the fourth travel switch 10 gives a control signal to a main safety control loop of the elevator to control the elevator to stop running again.

The touch point structure adopts a mechanical type, like fig. 4, the contact bearing can be detached when the system is not needed to be effective in maintenance and rope replacement, and the like, and the installation and the detachment are convenient.

The system can adopt closed-loop multistage setting and can also be provided with a redundant system, the setting and the application can be flexibly installed according to the construction site of the capital construction mine hoist, the setting is simple, the system is economical and efficient, safe and stable, the occurrence of overwinding accidents of the hoist can be effectively prevented, and powerful guarantee can be provided for the safe operation of the mine hoist.

Claims

1. The utility model provides a capital construction mine lifting machine prevents overwinding automatic control system which characterized in that: the elevator car lifting device comprises a first touch point (1), a second touch point (2), a first travel switch (3), a second travel switch (4), a cage (5) and a balance weight (6), wherein the first touch point (1) is arranged at the terminal parking level of the operation of the elevator, and the first touch point (1) is connected with the first travel switch (3) at a position 0.2m above the cage (5); the second touch point (2) is arranged at the stop level of the terminal of the operation of the elevator, is 0.4m below the balance weight, and is connected with the second travel switch (4); and the travel switch I (3) and the travel switch II (4) are connected in parallel and then are connected with a main safety control loop of the lifter.

2. The overwind prevention automatic control system of the capital construction mine hoist of claim 1, characterized in that: the travel switch is characterized by further comprising a third touch point (7), a fourth touch point (8), a third travel switch (9) and a fourth travel switch (10), wherein the third touch point (7) and the first touch point (1) are arranged horizontally, and the third touch point (7) is connected with the third travel switch (9); the fourth touch point (8) and the second touch point (2) are arranged horizontally, and the fourth touch point (8) is connected with the fourth travel switch (10); the travel switch I (3), the travel switch II (4), the travel switch III (9) and the travel switch IV (10) are connected in parallel and then are connected with a main safety control loop of the lifter.

3. The overwind prevention automatic control system of the capital construction mine hoist according to claim 2, characterized in that: the touch point I (1), the touch point II (2), the touch point III (7) and the touch point IV (8) are mechanical touch points, and the touch point bearing is of a detachable structure.