Downhole cable dragging protection device

Abstract

The utility model relates to the technical field of cable protection, and particularly discloses an underground cable dragging protection device which comprises a pipe body and a stabilizing device, a guide wheel for supporting a cable to move is arranged on the outer surface of the front end of the pipe body, the guide wheel is connected with the pipe body through a connecting plate, and the connecting plate is rotationally connected with the guide wheel and fixedly connected with the pipe body. The stabilizing device is located on the outer surface of the pipe body, the stability of the pipe body during placement is improved in an expansion resisting mode, by arranging the stabilizing device, the stability of the pipe body can be improved after the pipe body is placed into the power pipe, the pipe body and the guide wheels are prevented from generating gaps, and a cable entering the power pipe is better guided and protected; and meanwhile, the stable air bag enables the pipe body to be placed into the electric power pipe with the diameter larger than that of the pipe body through expansion and to be effectively fixed, the universality of the device is improved, and the construction cost is indirectly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection, in particular to an underground cable towing protection device. Background Technique

[0002] In cable towing protection, the use of pipe pulleys (or called pipe mouth pulleys) is common, especially in occasions where cables or pipes need to move along a certain path during mechanical movement. They are mainly installed at the pipe openings where the cables need to turn, playing roles such as reducing friction, supporting the cables, preventing overstretching, and maintaining the cable shape.

[0003] When the existing pipe mouth pulleys are in use, they need to be installed at the pipe openings through which the cables pass to guide the cables. However, the pipe mouth pulleys are often embedded in the power pipes by length and lack corresponding fixing devices, and can only ensure that the cables will not fall off during one-way movement, and also need to be replaced accordingly according to different diameters of the power pipes.

[0004] Therefore, we propose an underground cable towing protection device. Content of the Utility Model

[0005] The purpose of the utility model is to provide an underground cable towing protection device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an underground cable towing protection device, including a pipe body, a guide wheel for supporting the movement of the cable is provided on the outer surface of the front end of the pipe body, the guide wheel is connected to the pipe body through a connecting plate, and the connecting plate is rotatably connected to the guide wheel and fixedly connected to the pipe body;

[0007] A stabilizing device, which is located on the outer surface of the pipe body and increases the stability of the pipe body during placement by means of expansion resistance.

[0008] Among them, the stabilizing device includes a stabilizing airbag, the stabilizing airbag is fixedly connected to the outer surface of the pipe body away from the connecting plate, an air guide groove is opened at a position corresponding to the stabilizing airbag inside the pipe body, and an extrusion airbag is provided at one end of the air guide groove away from the stabilizing airbag, and the extrusion airbag is fixedly connected to the connecting plate.

[0009] Among them, one end of the extrusion airbag away from the connecting plate is fixedly connected with an extrusion plate for uniformly extruding the extrusion airbag, the extrusion plate is adapted to the size of the pipe body and is sleeved on the outer surface of the pipe body.

[0010] Among them, a guide groove is opened at a position corresponding to the connecting plate and the extrusion plate, a guide rod fixedly connected to the extrusion plate is slidably connected inside the guide groove, the guide rod and the guide groove are mutually corresponding and matched, and a restraint rope for limiting the maximum stroke of the guide rod is fixedly connected between the guide rod and the guide groove.

[0011] Among them, the extrusion plate has magnetism and is magnetically connected to the pipe body and the connecting plate.

[0012] Among them, a magnetic sheet made of rubber is embedded inside the stabilizing airbag, and the magnetic sheet is magnetically connected to the pipe body.

[0013] Among them, a pressure relief hole is opened at one end of the inner surface of the air guide groove away from the stabilizing airbag, and a rotary plug is connected inside the pressure relief hole through a thread.

[0014] Among them, a pressure relief hole with a T-shaped structure design is opened inside the rotary plug.

[0015] The utility model at least has the following beneficial effects:

[0016] By setting the stabilizing device, the stability of the pipe body can be increased after the pipe body is placed inside the power pipe, preventing the pipe body and the guide wheel from having a virtual position, better guiding and protecting the cable entering the power pipe. At the same time, the stabilizing airbag expands so that the pipe body can be placed inside a power pipe with a diameter larger than the diameter of the pipe body and obtain effective fixation, improving the versatility of the device and indirectly reducing the construction cost. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is an exploded structural schematic diagram of the stabilizing device of the utility model;

[0019] Figure 3 is a schematic diagram of the sectional structure of the pipe body of the utility model;

[0020] Figure 4 is a schematic diagram of the structure of the guide rod and the guide groove of the utility model;

[0021] Figure 5 is a schematic diagram of the structure of the second embodiment of the utility model.

[0022] In the figure: 1, pipe body; 10, guide wheel; 11, connecting plate; 2, stabilizing device; 20, stabilizing airbag; 201, magnetic sheet; 21, air guide groove; 22, extrusion airbag; 23, extrusion plate; 24, guide rod; 25, restraint rope; 26, guide groove; 30, pressure relief hole; 31, rotary plug; 32, pressure relief hole. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1-5 , the present utility model provides a technical solution: an underground cable towing protection device, including a pipe body 1. A guide wheel 10 for supporting the movement of the cable is provided on the outer surface of the front end of the pipe body 1. The guide wheel 10 is connected to the pipe body 1 through a connecting plate 11. The connecting plate 11 is rotatably connected to the guide wheel 10 and fixedly connected to the pipe body 1;

[0026] A stabilizing device 2 is located on the outer surface of the pipe body 1 and increases the stability of the pipe body 1 during placement by means of expansion resistance. Before use, the construction party will insert the pipe body 1 into a pre-installed power pipe. The pipe body 1 is stabilized through the stabilizing device 2. At this time, the guide wheel 10 is outside the power pipe. Then, a towing rope is passed through the power pipe. After contacting the cable, the cable is dragged inside the power pipe by towing until it reaches the position of the cable well. The guide wheel 10 guides the movement of the cable to prevent the cable from being scratched by the opening of the power pipe.

[0027] The stabilizing device 2 includes a stabilizing airbag 20 fixedly connected to the outer surface of the pipe body 1 away from the connecting plate 11. An air guide groove 21 is provided at a position corresponding to the stabilizing airbag 20 inside the pipe body 1. One end of the air guide groove 21 away from the stabilizing airbag 20 is provided with a squeezing airbag 22 fixedly connected to the connecting plate 11. When the user installs it, the area of the connecting plate 11 is larger than that of the power pipe. At this time, the squeezing airbag 22 is in a squeezed state with the power pipe, and the gas inside is squeezed into the stabilizing airbag 20 through the air guide groove 21. The stabilizing airbag 20 expands, increasing the friction and contact area with the power pipe, thereby achieving the effect of stabilizing the pipe body 1.

[0028] One end of the squeezing airbag 22 away from the connecting plate 11 is fixedly connected with a squeezing plate 23 for uniformly squeezing the squeezing airbag 22. The squeezing plate 23 is adapted to the size of the pipe body 1 and is sleeved on the outer surface of the pipe body 1. Due to the arrangement design of the power pipe, relying solely on the power pipe cannot effectively squeeze the squeezing airbag 22. By setting the squeezing plate 23, the squeezing plate 23 and the power pipe are squeezed, and the squeezing force is evenly applied to the surface of the squeezing airbag 22, thereby ensuring the squeezing effect and further increasing the stability of the pipe body 1 inside the power pipe.

[0029] The connecting plate 11 and the extrusion plate 23 are provided with guide grooves 26 at corresponding positions, and a guide rod 24 fixedly connected to the extrusion plate 23 is slidably connected inside the guide groove 26. The guide rod 24 and the guide groove 26 correspond to each other, and a restraining rope 25 for limiting the maximum stroke of the guide rod 24 is fixedly connected between the guide rod 24 and the guide groove 26. The guide rod 24 and the guide groove 26 limit the sliding direction of the extrusion plate 23, and the restraining rope 25 prevents the guide block from escaping from the guide groove 26.

[0030] The extrusion plate 23 is magnetic and is magnetically connected to the tube body 1 and the connecting plate 11. Because there is magnetic force between the extrusion plate 23, the connecting plate 11 and the tube body 1, the extrusion plate 23 will be adsorbed with the connecting plate 11, thereby ensuring that the gas inside the stable airbag 20 will not lift the extrusion airbag 22, further increasing the stability of the tube body 1.

[0031] A rubber magnetic sheet 201 is embedded inside the stabilizing airbag 20, and the magnetic sheet 201 is magnetically connected to the tube body 1. The adsorption force between the magnetic sheet 201 and the tube body 1 is smaller than the adsorption force generated by the magnetic force between the connecting plate 11 and the squeezing plate 23. When the user needs to remove the tube body 1, the user first pulls out the tube body 1 for a certain distance, and then uses the fingers to open the connecting plate 11 and the squeezing plate 23. Then, the stabilizing airbag 20 squeezes the gas inside the stabilizing airbag 20 back into the squeezing airbag 22 under the action of the magnetic sheet 201 and its own elastic force, so that the user can remove the tube body 1 conveniently.

[0032] Embodiment 2

[0033] A pressure relief hole 30 is provided on the inner surface of the air guide groove 21 at one end away from the stabilizing air bag 20, and a rotating plug 31 is threadedly connected to the inside of the pressure relief hole 30. In order to further facilitate the user to remove the tube body 1, the air guide groove 21 is exposed to the air by rotating the rotating plug 31, so that the gas inside the stabilizing air bag 20 is directly discharged. At this time, there is no gas in the air guide groove 21. When the extrusion air bag 22 needs to be replenished with air, the extrusion plate 23 is directly manually opened to allow external gas to enter the extrusion air bag 22 to complete the air replenishment.

[0034] The rotary plug 31 is provided with a T-shaped air leakage hole 32 inside, and the three ends of the air leakage hole 32 are all open. The rotary plug 31 can be rotated a certain number of times to connect the air leakage hole 32 with the external air, thereby simplifying the operation steps.

[0035] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A downhole cable dragging protection device, comprising a pipe body (1), wherein the front end outer surface of the pipe body (1) is provided with a guide wheel (10) for supporting the movement of the cable, and characterized in that: The guide wheel (10) and the tube body (1) are connected via a connecting plate (11), and the connecting plate (11) is rotatably connected to the guide wheel (10) and fixedly connected to the tube body (1); A stabilizing device (2) is located on the outer surface of the tube body (1) and uses an expansion resistance method to increase the stability of the tube body (1) when it is placed.

2. The underground cable dragging protection device according to claim 1 is characterized in that: The stabilizing device (2) comprises a stabilizing airbag (20), wherein the stabilizing airbag (20) is fixedly connected to the outer surface of the tube body (1) away from the connecting plate (11), an air guide groove (21) is provided inside the tube body (1) at a position corresponding to the stabilizing airbag (20), an extrusion airbag (22) is provided at one end of the air guide groove (21) away from the stabilizing airbag (20), and the extrusion airbag (22) is fixedly connected to the connecting plate (11).

3. The underground cable dragging protection device according to claim 2 is characterized in that: An end of the extrusion airbag (22) away from the connection plate (11) is fixedly connected to an extrusion plate (23) for uniformly extruding the extrusion airbag (22); the extrusion plate (23) is adapted in size to the tube body (1) and is sleeved on the outer surface of the tube body (1).

4. The underground cable dragging protection device according to claim 3 is characterized in that: A guide groove (26) is provided at corresponding positions of the connecting plate (11) and the extrusion plate (23); a guide rod (24) fixedly connected to the extrusion plate (23) is slidably connected inside the guide groove (26); the guide rod (24) and the guide groove (26) correspond to each other; a restraining rope (25) for limiting the maximum travel of the guide rod (24) is fixedly connected between the guide rod (24) and the guide groove (26).

5. The underground cable dragging protection device according to claim 3 is characterized in that: The extrusion plate (23) is magnetic and is magnetically connected to the tube body (1) and the connection plate (11).

6. The underground cable dragging protection device according to claim 2 is characterized in that: A magnetic attraction sheet (201) made of rubber is embedded inside the stabilizing airbag (20), and the magnetic attraction sheet (201) is magnetically connected to the tube body (1).

7. The underground cable dragging protection device according to claim 3 is characterized in that: A pressure relief hole (30) is provided at one end of the inner surface of the air guide groove (21) away from the stabilizing air bag (20), and a rotating plug (31) is threadedly connected to the inside of the pressure relief hole (30).

8. The underground cable dragging protection device according to claim 7 is characterized in that: The rotary plug (31) is provided with a vent hole (32) with a T-shaped structure.

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