A cable leakage prevention device based on the principle of sliding meshing teeth and a method of use

Abstract

A cable leakage prevention device based on the principle of sliding meshing teeth and a method of use, belonging to the fields of mining, electrical, transportation, and mechanical technology. The device includes a cable, a conductive contact head, an insulating rubber sleeve, a fixed ring, a fixed bracket, a meshing slider, meshing teeth, a screw, a wide track groove, a narrow track groove, and a middle block structure. The insulating rubber sleeve isolates the cable wrapped with a layer of conductive contact head from the outside world. Two meshing sliders are placed on the insulating rubber sleeve and connected to the fixed ring on the conductive contact head through a fixed bracket. The device isolates the cable wrapped with a conductive contact head from the outside world through a layer of insulating rubber sleeve. The insulating rubber sleeve realizes a sliding closed switch through two symmetrically distributed meshing sliders. The fixed bracket connects the meshing slider with the fixed ring to ensure that the meshing slider is evenly stressed. The present invention has the characteristics of low cost, easy and convenient installation, good protection effect, and wide application. It is mainly used in underground mining and rail transportation electric locomotive devices.

Description

Technical Field

[0001] The invention relates to the fields of mining, electricity, transportation and mechanical technology, and in particular to a cable leakage prevention device based on the principle of sliding meshing teeth. Technical Background

[0002] The normal operation of mining work is inseparable from the role of cables, but cable leakage can also cause serious consequences, such as electric shock to people. When workers touch the core wire that pierces the outer sheath of the rubber-sheathed cable and is exposed to the air, they are more likely to be electrocuted. In mining and other work, the vast majority of ignition sources underground are electric sparks, and the electric sparks generated by leakage wire leakage account for a considerable proportion. Leakage can easily cause swamp gas and coal dust explosions, and more seriously, electric detonators are unprepared to detonate, burn electrical equipment, cause fires, and shut down the working face for maintenance, which seriously affects production, causes serious economic losses, and reduces the economic benefits of coal mining enterprises. Therefore, preventing hidden dangers from the source from the four perspectives of man, machine, environment, and management, and protecting cables are of great practical significance for achieving safe mining in mines. It can also be applied to transportation, machinery, electrical and other technical fields. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a cable leakage prevention device based on the principle of sliding meshing teeth. The device isolates the cable wrapped with the conductive contact head from the outside world through a layer of insulating rubber sleeve, and the insulating rubber sleeve realizes sliding closing switch through two meshing sliders. The fixed bracket connects the meshing slider with the fixed ring to ensure that the meshing slider is evenly stressed.

[0004] A cable leakage prevention device based on the principle of sliding meshing teeth, characterized in that it includes a cable, an insulating rubber sleeve, a conductive contact head, a fixed bracket, a fixed ring, a meshing slider, meshing teeth, screws, a wide track groove, a narrow track groove and a middle block structure; the conductive contact head is surrounded by the outside of the cable to conduct electricity, and is composed of an upper and lower part, which is fixed by screws for easy replacement; the outermost insulating rubber sleeve isolates the cable and the conductive contact head from the outside world, and is closed by two freely slidable meshing sliders through meshing teeth: the meshing slider is fixed to the outer lead part of the conductive contact head by a fixed ring and a fixed bracket to facilitate the synchronous movement of the two meshing sliders.

[0005] Furthermore, the diameter of the cable is c, and the recommended size is 40 mm.

[0006] Furthermore, the thickness of the insulating rubber sleeve is a, and the recommended size is 4 mm.

[0007] Furthermore, the conductive contact head has a diameter of b, a recommended size of 60 mm, and should be made of a conductive, lubricating, and high-temperature resistant material such as graphite.

[0008] Furthermore, the length of the fixing bracket is f, and the recommended size is 35 mm, wherein the inclination angle φ of the fixing bracket is 45°, so that the meshing slider is subjected to uniform force in the horizontal and vertical directions.

[0009] Furthermore, the meshing slider has a width of m, with a recommended size of 25 mm; a height of g, with a recommended size of 25 mm; a thickness of w, with a recommended size of 2.4 mm, and a length of l, with a recommended size of 36 mm.

[0010] Furthermore, the meshing teeth have a width of y after meshing, and the recommended size is 10 mm, and a thickness of n, and the recommended size is 2 mm. It is recommended that the meshing teeth be made of a material with good elasticity, such as PE (Polyethylene) plastic. Lubricants should be added in time during use to prevent wear and damage to the meshing teeth.

[0011] Furthermore, the two ends of the meshing slider are provided with two track grooves of different widths, the width of the narrow track groove is h, the recommended size is 11 mm, and the width of the wide track groove is i, the recommended size is 20 mm.

[0012] Furthermore, the distance between the two meshing sliders is k, and the recommended size is 20 mm.

[0013] The method for using the cable leakage protection device based on the principle of sliding meshing teeth as described above is characterized in that when the meshing teeth pass through a narrow track groove, the two meshing teeth are squeezed and meshed, and when they pass through a wide track groove, the two meshing teeth are separated by the middle stop structure of the meshing slider to achieve separation of the meshing teeth. The wide track grooves of the two symmetrically distributed meshing sliders are located on the outside, and the narrow track grooves are located on the inside, so that during the movement of the conductive contact head, the front and rear meshing teeth are in a meshing state, thereby achieving a leakage protection effect. The schematic diagram of its opening and closing working principle is shown in the figure. Figure 3 shown.

[0014] Furthermore, the meshing teeth are two hook-type elastic plastic structures, which can be engaged through two pairs of hooks under the extrusion of the narrow track groove of the meshing slider without automatically falling off. When the middle stop structure of the meshing slider passes through the middle of the two meshing teeth, the hooks are separated and the meshing teeth are separated. The working principle of the meshing teeth is as follows Figure 4 shown.

[0015] The beneficial effects of the above technical solution of the present invention are as follows:

[0016] The device can isolate the cable wrapped with the conductive contact head from the outside world to prevent leakage, and at the same time realize free closing of the switch by engaging the slider. It can be mainly used in underground mining and rail transit electric locomotive devices, and overcomes the problem that traditional cable devices have no external protection facilities and increase the probability of electric shock accidents. The present invention has the characteristics of low cost, easy and convenient installation, good protection effect and wide application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a longitudinal schematic diagram of the leakage prevention device of the present invention;

[0018] Figure 2 It is a horizontal schematic diagram of the leakage prevention device of the present invention;

[0019] Figure 3 A schematic diagram of the opening and closing working principle of the leakage prevention device of the present invention;

[0020] Figure 4 It is a schematic diagram of the meshing principle of meshing teeth;

[0021] Among them: 1-cable; 2-insulating rubber sleeve; 3-conductive contact head; 4-fixing bracket; 5-fixing ring; 6-engaging slider; 7-engaging teeth; 8-screw; 9-wide track groove; 10-narrow track groove; 11-middle block structure. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0023] Aiming at the problems that the cable without a protective cover is prone to leakage, fire caused by electric sparks, and electric shock accidents to workers in current construction operations, the present invention provides a cable leakage prevention device based on the principle of sliding meshing teeth.

[0024] like Figure 1 As shown, in the device, the cable 1 is wrapped by a detachable and replaceable conductive contact head 3 fixed by a screw 8, and is isolated from the outside world by an insulating rubber sleeve 2 placed on the outermost layer. The insulating rubber sleeve 2 is fixed by two engaging sliders 6 that can slide freely in the track groove 9: the engaging slider 6 is fixed by a fixing ring fixed on the conductive contact head 3 through a fixing bracket 4.

[0025] like Figure 2 It is a horizontal schematic diagram of the present invention. The upper and lower parts of the conductive contact head 3 are screwed together by screws to achieve timely replacement of materials, extend the service life of the device, and be more convenient and highly operable.

[0026] Figure 3 The schematic diagram of the opening and closing working principle of the present invention is as follows: the wide track groove of the two symmetrically distributed meshing sliders is located on the outside, and the narrow track groove is located on the inside; the meshing slider (6) has a width of m, with a recommended size of 25 mm; a height of g, with a recommended size of 25 mm; a length of l, with a recommended size of 36 mm, and a thickness of 2.4 mm; during the movement of the conductive contact head 3, the meshing teeth at the front and rear are in a meshing state, thereby achieving the effect of preventing leakage.

[0027] Figure 4The figure is a schematic diagram of the meshing principle of the meshing teeth of the present invention. The meshing teeth are two hook-type elastic plastic structures. After meshing, the tooth width is y, and the recommended size is 10mm. The thickness is n, and the recommended size is 2mm. The meshing teeth can be engaged through two pairs of hooks under the extrusion of the narrow track groove of the meshing slider without automatically falling off. When the middle block structure of the meshing slider passes through the middle of the two meshing teeth, the hooks are separated and the meshing teeth are separated. It is recommended to use elastic materials such as PE (Polyethylene) plastic for the meshing teeth. Lubricating oil should be added in time during use to prevent wear and plastic damage of the meshing teeth under repeated opening and closing.

[0028] The specific implementation process is:

[0029] After the cable 1 is wrapped by a detachable and replaceable conductive contact head 3 fixed by screws 8, it is isolated from the outside world by an insulating rubber sleeve 2 placed on the outermost layer. The insulating rubber sleeve 2 is fixed by two meshing sliders 6 that can slide freely in the track groove 9: the meshing slider 6 is fixed by a fixing ring fixed on the conductive contact head 3 through a fixing bracket 4.

[0030] There are two track grooves of different widths at both ends of the meshing slider 6. When the meshing teeth 7 pass through the narrow track groove 10, the two meshing teeth 7 are squeezed and meshed. When it passes through the wide track groove 9, the two meshing teeth 7 are separated by the middle stop structure 11 of the meshing slider 6, thereby realizing the separation of the meshing teeth 7.

[0031] The wide track grooves 9 of the two symmetrically distributed meshing sliders 6 are located on the outside, and the narrow track grooves 10 are located on the inside, so that when the conductive contact head 3 moves, its front and rear meshing teeth 7 are in a meshing state to achieve the effect of preventing leakage.

[0032] The invention has low cost, convenient and simple installation, good protection effect, and can be widely used in underground mining and rail transportation electric locomotive devices.

[0033] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cable leakage prevention device based on the principle of sliding meshing teeth, characterized in that: The invention comprises a cable (1), an insulating rubber sleeve (2), a conductive contact head (3), a fixing bracket (4), a fixing ring (5), an engaging slider (6), engaging teeth (7), a screw (8), a wide track groove (9), a narrow track groove (10) and a middle stop structure (11); the conductive contact head (3) surrounds the outer side of the cable and plays a conductive role, and is composed of an upper and a lower part, which is fixed by a screw (8) for easy replacement; the outermost insulating rubber sleeve (2) isolates the cable and the conductive contact head from the outside, and is closed by two freely slidable engaging sliders (6) through the engaging teeth (7); the engaging slider (6) is fixed to the outer lead part of the conductive contact head (3) by the fixing ring and the fixing bracket (4), so that the two engaging sliders (6) can move synchronously; The meshing teeth (7) are two hook-type elastic plastic structures, which can be engaged through two pairs of hooks under the extrusion of the narrow track groove of the meshing slider (6) without automatically falling off; the inclination angle φ of the fixed bracket is 45°, so that the meshing slider (6) is evenly stressed in the horizontal and vertical directions.

2. The cable leakage prevention device based on the sliding meshing tooth principle according to claim 1 is characterized in that: The cable (1) has a diameter c and a size of 40 mm.

3. The cable leakage prevention device based on the sliding meshing tooth principle according to claim 1 is characterized in that: The insulating rubber sleeve (2) has a thickness a and a size of 4 mm.

4. The cable leakage prevention device based on the sliding meshing tooth principle according to claim 1 is characterized in that: The conductive contact head (3) has a diameter b, a size of 60 mm, and is made of graphite.

5. The cable leakage prevention device based on the sliding meshing tooth principle according to claim 1 is characterized in that: The length of the fixing bracket (4) is f and the size is 35 mm.

6. The cable leakage prevention device based on the sliding meshing teeth principle according to claim 1 is characterized in that: The meshing slider has a width of m, measuring 25 mm; a height of g, measuring 25 mm; a thickness of w, measuring 2.4 mm, and a length of l, measuring 36 mm.

7. The cable leakage prevention device based on the sliding meshing teeth principle according to claim 1 is characterized in that: The meshing teeth (7) have a width y of 10 mm and a thickness n of 2 mm after meshing. The meshing teeth (7) are made of polyethylene plastic. Lubricant should be added in time during use to prevent the meshing teeth from being worn and damaged.

8. The cable leakage prevention device based on the sliding meshing tooth principle according to claim 1 is characterized in that Two track grooves of different widths are provided at both ends of the meshing slider (6), the width of the narrow track groove (10) is h, measuring 11 mm, the width of the wide track groove (9) is i, measuring 20 mm, and the distance between the two meshing sliders is k, measuring 20 mm.

9. The method for using the cable leakage prevention device based on the sliding meshing tooth principle according to claim 1, characterized in that When the meshing teeth (7) pass through the narrow track groove (10), the two meshing teeth (7) are squeezed and meshed; when they pass through the wide track groove (9), the two meshing teeth (7) are separated by the middle stop structure (11) of the meshing slider (6), thereby realizing the separation of the meshing teeth (7); the wide track grooves (9) of the two symmetrically distributed meshing sliders (6) are located on the outside, and the narrow track grooves (10) are located on the inside, so that when the conductive contact head (3) moves, its front and rear meshing teeth (7) are in a meshing state, thereby achieving the effect of preventing leakage.

10. The cable leakage prevention device based on the sliding meshing teeth principle according to claim 1 is characterized in that: When the middle stop structure (11) of the meshing slide block (6) passes through the middle of the two meshing teeth, the hook is separated and the meshing teeth (7) are separated.

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