CN107887207B

CN107887207B - Explosion-proof switch locking device

Info

Publication number: CN107887207B
Application number: CN201711415513.9A
Authority: CN
Inventors: 梁秀旺; 牛卫国; 李江; 秦书明; 王华平; 王亮亮; 宋凡安; 岳晓峰; 琚彦斌; 王建军; 王超; 牛超; 杨凯; 秦孝卫; 郑会芳; 郭建国; 魏三清; 李鳌; 孟伟; 冯锦
Original assignee: SHANXI CHANGZHI WANGZHUANG COAL INDUSTRY CO LTD
Current assignee: SHANXI CHANGZHI WANGZHUANG COAL INDUSTRY CO LTD
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2020-06-09
Anticipated expiration: 2037-12-25
Also published as: CN107887207A

Abstract

The invention provides a locking device capable of effectively preventing an explosion-proof switch from being operated by mistake. Comprises a bottom plate, a guide rail frame, a sliding sleeve, a sliding plate, a vertical rod, a U-shaped sheath and a warning board. The guide rail frame is fixedly connected with the bottom plate into a whole, the guide rail is provided with positioning teeth, the sliding sleeve is sleeved on the guide rail and is in sliding fit with the guide rail, the sliding plate is provided with a locking block on one side surface facing the bottom plate, two support lugs are arranged above the locking block, the upper end of the tooth piece is sleeved in the shaft and is in rotating fit with the shaft, the middle section of the tooth piece is in clamping fit with the locking block, the sliding plate is provided with a vertical rod above, the top of the vertical rod is provided with a U-shaped sheath, one end of the sheath is provided with a. According to the invention, the U-shaped sheath slides on the guide rail to follow the handle of the explosion-proof switch, so that the sheath always surrounds the handle of the explosion-proof switch, and no space is reserved for operating the handle. The warning board is adjusted to a corresponding state according to different switch positions to warn, and a primary safety protection measure is added.

Description

Explosion-proof switch locking device

Technical Field

The invention relates to a safety matching device of a coal mine explosion-proof switch, in particular to a locking device capable of preventing misoperation.

Background

At present, the mining explosion-proof and intrinsically safe explosion-proof switch is widely applied to a coal mine, and even though the switch has higher safety in material, process and technical scheme, potential safety hazards can be generated when the switch is improper in operation and management. Explosion-proof switch adopts handle formula structure mostly, promptly: the 'off' or 'on' is operated by pulling up the handle or pressing down the handle, sometimes the state is not easy to be judged clearly when the attention is not concentrated, and misoperation is easy to occur to cause safety accidents. Especially, new workers are unskilled in operation, and misjudgment on two states is not clear, so that misoperation is easy to occur. And also, the misoperation occurs when the visual fatigue occurs. At present, no report for preventing misoperation exists.

Disclosure of Invention

The invention aims to provide a locking device capable of effectively preventing an explosion-proof switch from being operated by mistake.

The technical scheme of the invention is as follows: comprises a bottom plate, a guide rail frame, a sliding sleeve, a sliding plate, a vertical rod, a U-shaped sheath and a warning board; the guide rail frame is fixedly connected with the bottom plate into a whole, the bottom plate is provided with a mounting screw hole, a guide rail is arranged in the middle of the guide rail frame, and the guide rail is provided with positioning teeth; a sliding sleeve is arranged below the sliding plate, the sliding sleeve is sleeved on the guide rail and is in sliding fit with the guide rail, two ends of the sliding plate are in sliding fit with round rods on two sides of the guide rail frame, a locking block is arranged on one side surface of the sliding plate facing the bottom plate, two support lugs are arranged above the locking block, the shaft is arranged in shaft holes of the two support lugs in a penetrating mode, the upper end of a toothed sheet is sleeved in the shaft and is in rotating fit with the shaft, the lower end of the toothed sheet is located in a toothed groove of a positioning tooth on the guide rail, the middle section of the toothed sheet is in clamping fit; the slide top is equipped with the pole setting, and the pole setting top is equipped with U type sheath, and the one end of sheath is equipped with the riser, and this riser cross-section is square pipe, pegs graft on the riser and has the warning sign.

Two tooth surfaces of each positioning tooth on the guide rail are respectively a vertical surface and an inclined surface, and one side of the inclined surface is far away from the bottom plate.

The middle part of the locking piece is provided with a groove, the middle section of the tooth piece is provided with a clamping lock, and the bulge of the clamping lock is in clamping fit with the groove on the locking piece.

The lower insertion pipe of the warning board is matched with the inner pipe of the vertical pipe and is in clearance fit with the vertical pipe, and different warning signs or characters are arranged on two sides of the warning board.

The structure of the U-shaped sheath, the guide rail and the warning board is adopted, so that the U-shaped sheath slides on the guide rail to follow the handle of the explosion-proof switch, the sheath surrounds the handle of the explosion-proof switch all the time, and no space for operating the handle is reserved. The warning board is adjusted to a corresponding state according to different switch positions to warn, and a primary safety protection measure is added.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a partially enlarged schematic view of fig. 2.

Fig. 4 is a schematic structural view of the blade.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited thereto.

As shown in fig. 1 and 2, the invention comprises a bottom plate 3, a guide rail frame 2, a sliding sleeve 11, a sliding plate 6, an upright rod 7, a U-shaped sheath 1 and a warning board 8. The guide rail frame 2 is fixedly connected with the bottom plate 3 into a whole, the bottom plate 3 is provided with mounting screw holes, the middle of the guide rail frame 2 is provided with a guide rail 4, and the guide rail 4 is provided with positioning teeth. As shown in fig. 3, a sliding sleeve 11 is arranged below the sliding plate 6, the sliding sleeve 11 is sleeved on the guide rail 4 and is in sliding fit with the guide rail 4, and two ends of the sliding plate 6 are in sliding fit with the round rods on two sides of the guide rail frame 2. The side surface of the sliding plate 6 facing the bottom plate 3 is provided with a locking block 10, two support lugs 9 are arranged above the locking block 10, and a shaft 12 penetrates through shaft holes of the two support lugs 9. The upper end of the toothed sheet 5 is sleeved in the shaft 12 and is in rotary fit with the shaft 12, and the lower end of the toothed sheet 5 is positioned in a tooth groove of the positioning teeth on the guide rail 4 and is in elastic fit with the tooth surface. The middle part of the locking piece 10 is provided with a groove, as shown in fig. 4, the middle section of the tooth piece 5 is provided with a clamping lock 13, the bulge of the clamping lock 13 is in clamping fit with the groove on the locking piece 10, and the tooth piece 5 is made of elastic metal material. The top of the sliding plate 6 is provided with a vertical rod 7, the top of the vertical rod 7 is provided with a U-shaped sheath 1, one end of the U-shaped sheath 1 is provided with a vertical pipe, the cross section of the vertical pipe is a square pipe, and a warning board 8 is inserted on the vertical pipe. The lower insertion pipe of the warning board 8 corresponds to the inner pipe of the vertical pipe and is in clearance fit with the vertical pipe, different warning signs or characters are arranged on two sides of the warning board 8, and the warning board 8 cannot rotate after being inserted into the vertical pipe. Two tooth surfaces of the positioning teeth on the guide rail 4 are respectively a vertical surface and an inclined surface, and the inclined surfaces are positioned in the direction of one side of the vertical surface far away from the bottom plate 3.

When in use, the bottom plate 3 is screwed with the shell of the explosion-proof switch into a whole. After the switch is stopped, the handle is in a lifting state, at the moment, the sliding sleeve 11 slides towards the handle until the sliding sleeve is contacted with the handle, the lower part of the tooth piece 5 is clamped in a tooth groove between two teeth, the tooth piece 5 is propped against a vertical tooth surface, so that the tooth piece 5 cannot slide back, the U-shaped sheath 1 is locked, the U-shaped sheath 1 surrounds the handle, an operator cannot hold the handle, and the purpose of preventing random misoperation is achieved. In order to remind the operator of the current state of the explosion-proof switch, the warning board 8 is pulled out, and the corresponding warning surface of the warning board 8 faces the direction of the operator and is then inserted into the vertical pipe. When the change-over switch is in an operating state, the tooth sheet 5 is pulled up to separate the tooth sheet 5 from the lock 13, the constraint on the guide rail 4 is removed, then the sliding sleeve 11 is slid outwards to enable the U-shaped sheath 1 to be far away from the handle, the operating handle has a space, the handle is pressed down, the tooth sheet 5 is pressed down to enable the tooth sheet 5 to be clamped with the lock 13, the sliding sleeve 11 is slid towards the handle until the tooth sheet is contacted with the handle, the lower part of the tooth sheet 5 is clamped in a tooth groove between two teeth, the tooth sheet 5 is propped against a vertical tooth surface, the tooth sheet 5 cannot slide backwards, the U-shaped sheath 1 surrounds the handle, the operator does not have the space for operating the handle, and the purpose of preventing random misoperation is achieved. The warning board 8 is pulled out, and the corresponding warning surface of the warning board 8 faces the direction of an operator and then is inserted into the vertical pipe. When the switch needs to be stopped, the tooth piece 5 is pulled up to separate the tooth piece 5 from the lock 13, then the sliding sleeve 11 is slid outwards to enable the U-shaped sheath 1 to be far away from the handle, the handle is not restrained any more, the handle is lifted up, the tooth piece 5 is pressed down to enable the tooth piece 5 to be clamped with the lock 13, and then the sliding sleeve 11 is slid until the tooth piece is contacted with the handle. The warning board 8 is pulled out, and the corresponding warning surface of the warning board 8 faces the direction of an operator and then is inserted into the vertical pipe.

Claims

1. An explosion-proof switch blocking device which is characterized in that: comprises a bottom plate (3), a guide rail frame (2), a sliding sleeve (11), a sliding plate (6), an upright rod (7), a U-shaped sheath (1) and a warning board (8); the guide rail frame (2) is fixedly connected with the bottom plate (3) into a whole, the bottom plate (3) is provided with a mounting screw hole, the middle of the guide rail frame (2) is provided with a guide rail (4), and the guide rail (4) is provided with positioning teeth; a sliding sleeve (11) is arranged below the sliding plate (6), the sliding sleeve (11) is sleeved on the guide rail (4) and is in sliding fit with the guide rail (4), two ends of the sliding plate (6) are in sliding fit with round rods on two sides of the guide rail frame (2), a locking block (10) is arranged on one side face, facing the bottom plate (3), of the sliding plate (6), two support lugs (9) are arranged above the locking block (10), a shaft (12) penetrates through shaft holes of the two support lugs (9), the upper end of a toothed sheet (5) is sleeved in the shaft (12) and is in rotating fit with the shaft (12), the lower end of the toothed sheet (5) is located in a tooth groove of a positioning tooth on the guide rail (4), the middle section of the toothed sheet (5) is in clamping fit with the locking block (10) and is in elastic fit with a tooth surface; an upright rod (7) is arranged above the sliding plate (6), a U-shaped sheath (1) is arranged at the top of the upright rod (7), a vertical pipe is arranged at one end of the U-shaped sheath (1), the cross section of the vertical pipe is a square pipe, a warning board (8) is inserted on the vertical pipe, an insertion pipe at the lower part of the warning board (8) is matched with an inner pipe of the vertical pipe and is in clearance fit with the vertical pipe, and different warning marks or characters are arranged on two sides of the warning board (8); the middle part of the locking block (10) is provided with a groove, the middle section of the tooth piece (5) is provided with a clamping lock (13), and the protrusion of the clamping lock (13) is in clamping fit with the groove on the locking block (10).

2. An explosion proof switch lockout device as claimed in claim 1 wherein: two tooth surfaces of each positioning tooth on the guide rail (4), one is a vertical surface, the other is an inclined surface, and the inclined surface is the direction of one side of the vertical surface far away from the bottom plate (3).