Underground coal mine electrical switch

Abstract

The utility model discloses an underground coal mine electrical switch, which comprises an electrical switch body and a wiring pipe fixed at the bottom of the electrical switch body, the wiring pipe is communicated with the interior of the electrical switch body, a positioning ring is detachably mounted on the wiring pipe, and a flexible protective cover is fixedly connected to the bottom of the positioning ring. The flexible protective cover can seal a gap between the wiring pipe and the cable. According to the utility model, a cable is inserted into the wiring pipe, then the end part of the cable enters the interior of the electrical switch body to be wired with a component, after wiring is completed, the flexible protective cover is pulled down, so that the lower end of the flexible protective cover is located at the cable, and at the moment, the connecting rod is pushed to slide on the guide rod; and then the bolt is rotated to enable the end part of the bolt to abut against the guide rod, so that the position of the clamping strip is locked.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of distribution switch, concretely is a coal mine underground electrical switch. BACKGROUND

[0002] Coal mine mechanical equipment is the basic equipment of coal mine operation, in the coal mine collection and production process, need a large number of operation coal mine mechanical equipment, electrical equipment and electromechanical device, electrical switch is a kind of control electric appliance in coal conveying system, it is in one's own body with control and multiple protection functions, except can complete contact and break circuit, still can protect the short circuit, serious overload and under voltage etc. that the circuit or electrical equipment occurs, electrical switch will automatically disconnect when short circuit and serious overload etc. problem occurs, avoid accidents.

[0003] After electrical switch is connected with external cable, the dust in coal mine underground environment is relatively large, dust is easy to enter electrical switch body through the gap between wiring pipe and cable, which will affect the operation of internal components of electrical switch body. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a coal mine underground electrical switch, solves the problem in the above background art.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a coal mine underground electrical switch, including electrical switch body, the wiring pipe of fixed in the bottom of electrical switch body, the wiring pipe is communicated with the inside of electrical switch body and is arranged, the detachable installation of positioning ring is arranged on the wiring pipe, the flexible protective cover is fixedly connected at the bottom of positioning ring, the flexible protective cover can seal the gap between wiring pipe and cable.

[0006] Preferably, the wiring pipe is provided with external threads near the top end, the positioning ring is provided with internal threads inside, and the positioning ring and the wiring pipe are connected through threads.

[0007] Preferably, the bottom of the electrical switch body is fixedly connected with a fastening assembly, the fastening assembly includes two stop blocks fixed to the bottom of the electrical switch body, a guide rod fixedly connected between the stop blocks, two connecting rods slidably sleeved on the guide rod, clamping strips fixedly connected to the lower ends of the connecting rods, and the two clamping strips press the flexible protective cover on the cable.

[0008] Preferably, the connecting rod is provided with a bolt in screw thread, the end of the bolt is in contact with the guide rod, and the guide rod is a rectangular rod.

[0009] Preferably, a cover plate is rotatably arranged on the front side wall of the electrical switch body through a hinge, and the cover plate and the electrical switch body are connected by a lock catch.

[0010] Preferably, the electrical switch body is fixedly connected with a blocking strip on both sides, and a through hole is formed in the blocking strip.

[0011] The utility model provides a coal mine underground electrical switch has the following beneficial effects:

[0012] 1, in the utility model, the cable is inserted into the wiring pipe, then the cable end enters the electrical switch body inside and the component for wiring, after completing the wiring, the flexible protective cover is pulled down, so that the flexible protective cover lower end is located at the cable, at this time, the connecting rod is pushed, so that the connecting rod slides on the guide rod, until the clamping strip is pressed on the cable on the flexible protective cover, then the bolt is rotated, so that the bolt end abuts against the guide rod, so that the locking of the clamping strip position is realized, so that the sealing is realized, and the normal operation of the electrical switch body internal component is ensured.

[0013] 2, in the utility model, the positioning ring and the wiring pipe adopt the threaded mounting mode, so that when the flexible protective cover is damaged, the flexible protective cover can be replaced, the flexible protective cover can be made of nylon material, and is easy to deform. ACCURACY

[0014] Fig. 1 A front view of the coal mine underground electrical switch is provided for the utility model;

[0015] Fig. 2 A bottom view of the coal mine underground electrical switch is provided for the utility model;

[0016] Fig. 3 A disassembled state of the coal mine underground electrical switch is provided for the utility model;

[0017] Fig. 4 A fastening assembly structure of the coal mine underground electrical switch is provided for the utility model.

[0018] In the drawing: 1, electrical switch body;2, cover plate;3, wiring pipe;301, external thread;4, flexible protective cover;5, positioning ring;6, fastening assembly;61, connecting rod;62, clamping strip;63, guide rod;64, stop block;65, bolt;7, blocking strip;701, through hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0020] Please refer to Figs. 1 to 4The utility model provides a technical scheme: a coal mine underground electrical switch, including electrical switch body 1, the wiring pipe 3 of fixed in electrical switch body 1 bottom, wiring pipe 3 with electrical switch body 1 inside intercommunication arrangement, wiring pipe 3 detachably install with the positioning ring 5 of wiring pipe 3, the bottom fixed connection of positioning ring 5 has flexible protective cover 4, flexible protective cover 4 can seal the gap between wiring pipe 3 and cable.

[0021] Wiring pipe 3 is close to the position of top end and is provided with external thread 301, the inside of positioning ring 5 is provided with internal thread, and positioning ring 5 is connected between wiring pipe 3 through thread, and positioning ring 5 and wiring pipe 3 are installed in thread mode, so that when flexible protective cover 4 is damaged, flexible protective cover 4 can be replaced, and flexible protective cover 4 can be made of nylon material and is a telescopic bellows structure, which is easy to deform.

[0022] The bottom of electrical switch body 1 is fixedly connected with a fastening assembly 6, the fastening assembly 6 comprises two stoppers 64 fixed to the bottom of the electrical switch body 1, the stoppers 64 are fixedly connected with a guide rod 63, the guide rod 63 is slidably sleeved with two connecting rods 61, the connecting rods 61 are fixedly connected with clamping strips 62 at the lower ends, and the two clamping strips 62 press the flexible protective cover 4 on the cable.

[0023] The connecting rods 61 are provided with bolts 65 in a threaded manner, the ends of the bolts 65 are in abutting contact with the guide rod 63, and the guide rod 63 is a rectangular rod.

[0024] The cable is inserted into the wiring pipe 3, and then the end of the cable enters the inside of the electrical switch body 1 to be connected with components, after the connection is completed, the flexible protective cover 4 is pulled down, so that the lower end of the flexible protective cover 4 is located at the cable, at this time, the connecting rods 61 are slid on the guide rod 63 by pushing the connecting rods 61, until the clamping strips 62 press the flexible protective cover 4 on the cable, then the bolts 65 are rotated, so that the ends of the bolts 65 are in abutting contact with the guide rod 63, so that the position of the clamping strips 62 is locked, so that the sealing of the wiring pipe 3 is realized, and the normal operation of the components in the electrical switch body 1 is ensured.

[0025] The front side wall of the electrical switch body 1 is provided with a cover plate 2 rotatably connected through a hinge, the cover plate 2 is connected with the electrical switch body 1 through a lock catch, the cover plate 2 is rotatably opened, and a rubber pad is arranged on the inner side of the cover plate 2 for sealing.

[0026] The two sides of the electrical switch body 1 are fixedly connected with a baffle 7, the baffle 7 is provided with a through hole 701, and an expansion screw is arranged in the through hole 701 to fix the device on the wall surface.

[0027] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An electrical switch for use in a coal mine, characterised in that: Including electrical switch body (1), the wiring pipe (3) is fixed to the bottom of electrical switch body (1), the wiring pipe (3) is communicated with the inside of electrical switch body (1) arrangement, the wiring pipe (3) is detachably installed with the positioning ring (5), the positioning ring (5) bottom fixedly connected with flexible protective cover (4), the flexible protective cover (4) can seal the gap between wiring pipe (3) and cable.

2. A coal mine underground electrical switch according to claim 1, characterised in that: The wiring pipe (3) is provided with an external thread (301) near the top end, the positioning ring (5) is provided with an internal thread inside, and the positioning ring (5) and the wiring pipe (3) are connected by threads.

3. A coal mine underground electrical switch according to claim 1, characterised in that: The electrical switch body (1) is fixedly connected with a fastening assembly (6) at the bottom, the fastening assembly (6) comprises two stop blocks (64) fixed to the bottom of the electrical switch body (1), the stop blocks (64) are fixedly connected with a guide rod (63) between them, the guide rod (63) is slidably sleeved with two connecting rods (61) on it, the connecting rods (61) are fixedly connected with clamping strips (62) at the lower ends, and the two clamping strips (62) press the flexible protective cover (4) tightly on the cable.

4. A coal mine electrical switch according to claim 3, characterised in that: The connecting rod (61) is provided with a bolt (65) in a threaded manner, the end of the bolt (65) is in abutting contact with the guide rod (63), and the guide rod (63) is a rectangular rod.

5. A coal mine electrical switch according to claim 1, characterised in that: The front side wall of the electrical switch body (1) is provided with a cover plate (2) rotating through a hinge, and the cover plate (2) and the electrical switch body (1) are connected by a lock catch.

6. A coal mine electrical switch according to claim 1, characterised in that: The electrical switch body (1) is fixedly connected with a baffle (7) on both sides, and the baffle (7) is provided with a through hole (701).

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