Cable fixing device for vertical hole in mine

Abstract

The utility model belongs to the technical field of mine underground cable laying, and relates to a cable fixing device for a vertical hole under a mine, which comprises a chassis, a supporting part and a fastener, a circular opening is formed in the middle of the chassis; the chassis is fixedly connected with the bottom end of the supporting part; and the fastener is movably connected with the top end of the supporting part and is used for fastening and supporting the cable. According to the underground vertical hole cable fixing device for the mine, through the unique structural design, effective fixing and protection of the cable are achieved, the cable is prevented from falling off due to self weight or external force, the stability and safety of power supply are ensured, and therefore the safety and efficiency of mine operation are improved; and the cable and the fixing device are prevented from being influenced by caved gravels in the mine, and the safety is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine underground cable laying technical field especially relates to a cable fixing device for mine vertical hole. BACKGROUND

[0002] In the mine underground operation environment, the vertically arranged cable hole is used as a cable laying method to connect the power supply system of different horizontal layers. This laying method not only saves the cable material required for long lines, but also helps to reduce line loss, thereby ensuring the stability of the power supply voltage. With the improvement of the material quality of mine cable, modern mine cable generally uses mine safety low-halogen smokeless flame-retardant material, which improves safety, but also increases the weight of the cable, bringing new challenges to the laying and fixing of the cable. When the cable is lowered to a lower horizontal layer through the vertical cable hole, the cable may fall off due to the influence of its own weight, affecting normal power supply.

[0003] In order to solve the problem that the cable is easy to fall off, the traditional method usually uses a rope to fix the cable at the vertical cable hole. However, this method needs to make an anchor point at a suitable position of the cable hole as a rope suspension point and provide a fixed support force; not only time-consuming and laborious, but also the rope fastening is easy to be affected by blasting vibration and blasting air shock wave, resulting in large swing amplitude of the rope and cable, which may cause problems such as loose and falling off of the cable joint, poor contact, etc. In addition, the rope may be broken by the falling dangerous rock, causing the cable to lose fixation and fall off from the power distribution cabinet, resulting in a large range of power failure and affecting the production work in the mine. These problems highlight the shortcomings of the existing cable fixing technology, especially in terms of ensuring the stability of the cable and the safety of power supply. Therefore, it is of great significance to develop a new type of cable fixing device suitable for the vertical cable hole in the mine to improve the safety and efficiency of the mine underground operation. UTILITY MODEL CONTENTS

[0004] In view of the shortcomings of the prior art, the utility model provides a cable fixing device for a vertical hole in a mine, which solves the problems of time-consuming and laborious fastening method, and loose cable joint caused by blasting vibration or shock wave. It also solves the problem that the falling rock in the mine endangers the safety of the cable fixation.

[0005] To solve the above technical problems, the utility model provides the following core technical scheme: a cable fixing device for a vertical hole in a mine, comprising a bottom disc, a support part and a fastener; a circular opening is provided in the middle of the bottom disc, and the bottom disc is fixedly connected with the bottom end of the support part; the fastener is movably connected with the top end of the support part, and is used for fastening and supporting the cable.

[0006] The structure design has the beneficial effects that the device can be stably installed in the vertical hole under the mine, and the cable can be effectively fastened and supported to prevent the cable from falling due to the weight or external force, and the continuity and safety of power supply are ensured.

[0007] Further, based on the above core technical solution, the upper and lower surfaces of the chassis are square with a length of 210 mm and a width of 210 mm, and are made of a steel plate with a thickness of 3 mm, and the diameter of the circular opening is 108 mm.

[0008] Further, based on the above core technical solution, the support part is composed of a guide pipe and two guide rails, and the guide pipe and the guide rails are made of steel; the bottom end of the guide pipe corresponds to the circular opening and is fixedly connected with the chassis; the two guide rails are fixedly arranged in parallel on the top end of the guide pipe.

[0009] Further, the inner diameter of the guide pipe is 108 mm, and the length is 200 mm.

[0010] Further, the guide rail is a circular rod with a diameter of 16 mm and a length of 210 mm.

[0011] Further, the fastener includes two fastening blocks, two fastening screws, and four fastening nuts; the bottom of the fastening block is provided with two clamping grooves corresponding to the two guide rails, and the two ends of the fastening block are provided with two screw holes; the two fastening blocks are movably installed on the two guide rails through the clamping grooves, the fastening screws pass through the screw holes and cooperate with the fastening nuts to tighten and fix the two fastening blocks, and the two fastening blocks are used to clamp the cable.

[0012] Further, the fastening block is a cuboid structure with a length of 60 mm, a width of 60 mm, and a height of 150 mm, and is made of rubber flame-retardant material.

[0013] Further, the inner side of the fastening block is provided with a semicircular opening clamping groove in the middle, which is used to adapt to the shape of the cable when clamping the cable.

[0014] Further, the fastening screw is an M12 type screw with a length of 240 mm.

[0015] Further, the inner side of the fastening block is further provided with a lining of flame-retardant and insulating material, which is used to increase the friction force when the fastening block clamps the cable.

[0016] The size and material selection of the chassis make the device have sufficient strength and stability to withstand the weight of the cable and the impact of downhole operations. The design of the circular opening allows the cable to pass through, and the diameter matches the cable to ensure that the cable can pass smoothly without damage. The structural design of the support provides guidance and fixation of the cable; the use of steel ensures the strength and durability of the support, allowing the device to be used in harsh mine environments for a long time. The design of the guide pipe ensures matching with the cable and allows the cable to pass through smoothly; and the guide pipe raises the fastener to a certain height, which can avoid short circuit caused by water accumulation in the hole, affecting safety production; it is also convenient to use the stope gravel to cover the chassis, further enhancing the protection effect. The size and shape of the guide rail make it able to cooperate with the fastener to effectively clamp the cable. The use of two fastening sliders and fastening screws provides a simple and effective fastening mechanism that can accommodate cables of different thicknesses. The size of the fastening slider and the selection of the rubber flame-retardant material not only provide sufficient strength and wear resistance, but also have good flame-retardant properties, increasing safety when used in mines. The design of the semicircular opening slot allows the fastening slider to better adapt to the shape of the cable, providing more stable clamping effect and making the cable more stable. The use of M12 type fastening screws is compatible with existing tools and accessories on the basis of ensuring the firmness of the fastener, making it convenient for on-site operation. The flame-retardant insulating material lining on the inside of the fastening slider not only increases the friction when clamping the cable to prevent the cable from slipping, but also provides additional insulation protection, reducing wear and tear of the cable due to friction, prolonging the service life of the cable, and reducing the risk of electrical failure.

[0017] The cable fixing device for vertical holes in mines has the beneficial effects of: through its unique structural design, it realizes effective fixation and protection of the cable, prevents the cable from falling off due to its own weight or external force, ensures the stability and safety of power supply, and thus improves the safety and efficiency of mine operations; it also avoids the influence of falling stones in the mine on the cable and the fixing device, further improving safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and form a part of this application:

[0019] Figure 1 It is a structural schematic diagram of the first embodiment of the present application;

[0020] Figure 2 It is a structural schematic diagram of the fastening slider in the present application.

[0021] In the figure: 1, chassis; 2, guide pipe; 3, guide rail; 4, fastening screw; 5, fastening slider; 6, screw hole; 7, slot; 8, semicircular opening slot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] Noun definition:

[0024] "M12 screw": a commonly used mechanical fastener, "M12" means that the nominal diameter of the metric screw is 12 mm. This screw is widely used in construction, machinery manufacturing, aerospace and other fields, and is used to connect or fix various mechanical parts.

[0025] Embodiment one:

[0026] For example, Figure 1 , 2As shown, a cable fixing device for vertical hole in mine shaft, including base plate 1, support part and fastener. The middle of the base plate 1 is provided with a circular opening, the upper and lower surfaces of the base plate 1 are square with a length of 210mm and a width of 210mm, made of steel plate with a thickness of 3mm, and the diameter of the circular opening is 108mm. So that the device has enough strength and stability, can withstand the weight of the cable and the impact of underground operation. The design of the circular opening allows the cable to pass through, and the diameter matches the cable, ensuring that the cable can pass smoothly and not be damaged. The support part is composed of a guide pipe 2 and two guide rails 3, and the materials of the guide pipe 2 and the guide rails 3 are steel; the bottom end of the guide pipe 2 corresponds to the circular opening and is fixedly connected with the base plate 1, and the inner diameter of the guide pipe 2 is 108mm and the length is 200mm; the two guide rails 3 are parallelly and fixedly arranged on the top end of the guide pipe 2 on both side edges, and the guide rail 3 is a circular rod with a diameter of 16mm and a length of 210mm. The structural design of the support part provides the guiding and fixing effect of the cable; the use of steel material ensures the strength and durability of the support part, so that the device can be used in harsh mine environment for a long time. The design of the guide pipe 2 ensures the matching with the cable and allows the cable to pass through smoothly, and the guide pipe 2 lifts the fastener to a certain height, which can avoid short circuit caused by water accumulation in the hole, affecting the safety production; it is also convenient to use the broken sandstone in the stope to cover the base plate 1, further enhancing the protection effect. The fastener includes two fastening blocks 5, two fastening screws 4 and four fastening nuts; the bottom of the fastening block 5 is provided with two clamping grooves 7 matched with the two guide rails 3, and the two ends of the fastening block 5 are provided with two screw holes 6; the two fastening blocks 5 are movably installed on the two guide rails 3 through the clamping grooves 7, the fastening screw 4 passes through the screw hole 6 and cooperates with the fastening nut to tighten and fix the two fastening blocks 5, which is used for fastening and supporting the cable. The size and shape design of the guide rail 3 can cooperate with the fastener to effectively clamp the cable. The cooperation of the two fastening blocks 5 and the fastening screw 4 provides a simple and effective fastening mechanism, which can adapt to cables of different thicknesses. The base plate 1 is fixedly connected with the bottom end of the support part guide pipe 2; the fastening block 5 is a cuboid structure with a length of 60mm, a width of 60mm and a height of 150mm, made of rubber flame-retardant material. The size of the fastening block 5 and the selection of rubber flame-retardant material not only provide enough strength and wear resistance, but also have good flame-retardant performance, increasing the safety when used in mine. The inner side of the fastening block 5 is provided with a semicircular opening clamping groove 8 in the middle, which is matched with the shape of the cable when clamping the cable; the design of the semicircular opening clamping groove 8 makes the fastening block 5 better adapt to the shape of the cable, providing more stable clamping effect, making the cable more stable. The fastening screw 4 adopts M12 type screw with a length of 240mm. The use of M12 type fastening screw 4 is compatible with existing tools and accessories on the basis of ensuring the firmness of the fastener, which is convenient for on-site operation.

[0027] The specific method for laying cable using the device is:

[0028] Before laying the cable, the area around the vertical cable hole is leveled, and then the device base 1 is placed with its center aligned with the center of the vertical cable hole. When the cable is lowered, the end passes through the guide pipe 2 of the device and enters the vertical cable hole. After being lowered to the desired position, the cable is clamped by the inner semicircular opening clamping groove 8 of the fastening sliding block 5 by tightening the fastening screw 4. Before tightening the fastening screw 4, the clamping groove at the bottom of the fastening sliding block 5 and the guide rail 3 can be lubricated to facilitate the movement of the fastening sliding block 5 on the fastening guide rail 3. After the cable is positioned and fastened, the base 1 can be covered with broken sandstone from the mining site, and the exposed parts of the guide rail 3 of the fastening sliding block 5 and the guide pipe 2 can be insulated with insulation tape. Finally, the end of the cable is connected to the power supply or distribution equipment, and the laying of the cable in the vertical cable hole is completed.

[0029] The cable fixing device for vertical holes in mines has the following advantages: through its unique structural design, it effectively fixes and protects the cable, preventing it from falling off due to its own weight or external forces, ensuring the stability and safety of power supply, thereby improving the safety and efficiency of mine operations; it also avoids the influence of falling debris in the mine on the cable and the fixing device, further improving safety.

[0030] Example Two:

[0031] In this example, based on Example One, a fire-retardant insulating material lining is also provided inside the fastening sliding block 5, as follows:

[0032] A cable fixing device for vertical holes in mines, comprising a base plate 1, a support part and a fastener. The base plate 1 is provided with a circular opening in the middle, and the upper and lower surfaces of the base plate 1 are square with a length of 210 mm and a width of 210 mm, made of a steel plate with a thickness of 3 mm, and the diameter of the circular opening is 108 mm. The device has sufficient strength and stability to withstand the weight of the cable and the impact of underground operation. The design of the circular opening allows the cable to pass through, and the diameter matches the cable to ensure that the cable can pass smoothly without damage. The support part is composed of a guide pipe 2 and two guide rails 3, and the material of the guide pipe 2 and the guide rails 3 is steel; the bottom end of the guide pipe 2 corresponds to the circular opening and is fixedly connected with the base plate 1, and the inner diameter of the guide pipe 2 is 108 mm and the length is 200 mm; the two guide rails 3 are fixedly arranged on the top two side edges of the guide pipe 2, and the guide rail 3 is a circular rod with a diameter of 16 mm and a length of 210 mm. The structural design of the support part provides the guiding and fixing effect of the cable; the use of steel material ensures the strength and durability of the support part, so that the device can be used in harsh mine environment for a long time. The design of the guide pipe 2 ensures the matching with the cable and allows the cable to pass through smoothly, and the guide pipe 2 lifts the fastener to a certain height, which can avoid short circuit caused by water accumulation in the hole, affecting the safety production; it is also convenient to use the broken sandstone in the stope to cover the base plate 1, which further enhances the protection effect. The fastener includes two fastening blocks 5, two fastening screws 4 and four fastening nuts; the bottom of the fastening block 5 is provided with two clamping grooves 7 matched with the two guide rails 3, and the two ends of the fastening block 5 are provided with two screw holes 6; the two fastening blocks 5 are movably installed on the two guide rails 3 through the clamping grooves 7, the fastening screw 4 passes through the screw hole 6 and cooperates with the fastening nut to tighten and fix the two fastening blocks 5, which is used for fastening and supporting the cable. The size and shape design of the guide rail 3 can cooperate with the fastener to effectively clamp the cable. The cooperation of the two fastening blocks 5 and the fastening screw 4 provides a simple and effective fastening mechanism that can adapt to cables of different thicknesses. The base plate 1 is fixedly connected with the bottom end of the support part guide pipe 2; the fastening block 5 is a cuboid structure with a length of 60 mm, a width of 60 mm and a height of 150 mm, made of rubber flame-retardant material. The size of the fastening block 5 and the selection of rubber flame-retardant material not only provide sufficient strength and wear resistance, but also have good flame-retardant performance, increasing the safety when used in mines. The inner side of the fastening block 5 is provided with a semicircular opening clamping groove 8 in the middle, which is matched with the shape of the cable when clamping the cable; the design of the semicircular opening clamping groove 8 makes the fastening block 5 better adapt to the shape of the cable, providing more stable clamping effect, making the cable more stable. The fastening screw 4 adopts M12 type screw with a length of 240 mm. The use of M12 type fastening screw 4 is compatible with existing tools and accessories on the basis of ensuring the firmness of the fastener, which is convenient for on-site operation. The inner side of the fastening block 5 is also provided with a lining of flame-retardant insulating material for increasing the friction force when the fastening block 5 clamps the cable.The fire-retardant insulating material pad on the inner side of the fastening sliding block 5 not only increases the friction when clamping the cable, prevents the cable from sliding, but also provides additional insulation protection, reduces the wear of the cable due to friction, prolongs the service life of the cable, and reduces the risk of electrical failure.

[0033] The cable fixing device for vertical holes in mines has the beneficial effects that through the unique structural design, effective fixing and protection of the cable are realized, the cable is prevented from falling off due to self weight or external force, the stability and safety of power supply are ensured, the safety and efficiency of mine operation are improved, and the cable and the fixing device are prevented from being affected by the falling stones in the mine, and the safety is further improved.

[0034] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A cable fixing device for vertical holes in mine shafts, characterized in that: It includes a chassis, a support, and fasteners; the chassis has a circular opening in the middle, and the chassis is fixedly connected to the bottom end of the support; the fasteners are movably connected to the top end of the support and are used to fasten and support the cable.

2. The cable fixing device for vertical holes in mines according to claim 1, characterized in that: The chassis has a square shape with a length of 210mm and a width of 210mm on the top and bottom, and is made of steel plate with a thickness of 3mm. The diameter of the circular opening is 108mm.

3. A cable fixing device for vertical holes in mines according to claim 1, characterized in that: The support consists of a conduit and two guide rails, both made of steel. The bottom end of the conduit corresponds to the circular opening and is fixedly connected to the base. The two guide rails are fixedly mounted parallel to each other on both sides of the top edge of the conduit.

4. A cable fixing device for vertical holes in mines according to claim 3, characterized in that: The catheter has an inner diameter of 108 mm and a length of 200 mm.

5. A cable fixing device for vertical holes in mines according to claim 3, characterized in that: The guide rail is a round rod with a diameter of 16mm and a length of 210mm.

6. A cable fixing device for vertical holes in mines according to claim 3, characterized in that: The fastener includes two fastening sliders, two fastening screws, and four fastening nuts. The bottom of the fastening slider is provided with two slots that correspond to the two guide rails, and the two ends of the fastening slider are provided with two screw holes. The two fastening sliders are movably mounted on the two guide rails through the slots. The fastening screws pass through the screw holes and cooperate with the fastening nuts to tighten and fix the two fastening sliders for clamping the cable.

7. A cable fixing device for vertical holes in mines according to claim 6, characterized in that: The fastening slider is a cuboid structure with a length of 60mm, a width of 60mm, and a height of 150mm, made of flame-retardant rubber material.

8. A cable fixing device for vertical holes in mines according to claim 6, characterized in that: The inner center of the fastening slider is provided with a semi-circular opening slot, which is used to adapt to the shape of the cable when clamping it.

9. A cable fixing device for vertical holes in mines according to claim 6, characterized in that: The fastening screw is an M12 type screw with a length of 240mm.

10. A cable fixing device for vertical holes in mines according to claim 6, characterized in that: The inner side of the fastening slider is also provided with a flame-retardant insulating pad to increase the friction when the fastening slider clamps the cable.

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