Cable laying auxiliary equipment

Abstract

This invention discloses a cable laying auxiliary device, including a fixed frame positioned above a wellhead. Multiple first rollers are rotatably mounted on the upper end of the fixed frame, and multiple support rods are hinged to the upper end of the fixed frame. A connecting rod is provided between adjacent support rods, and a second roller is sleeved on the connecting rod. The second roller is rotatably connected to the connecting rod. Two sliding rods are slidably mounted inside the connecting rod, and the two sliding rods are respectively fixedly connected to two support rods via ropes. A spring is hinged between the end of each support rod near the connecting rod and the fixed frame. The first rollers and second rollers are arranged in a one-to-one correspondence. Compared with the prior art, the first rollers of this invention can prevent damage to the cable from the wellhead, while the second rollers can prevent the cable from being scratched by the well wall. Secondly, the springs and support rods work together to provide a certain buffering effect on the tensile force during cable laying. Thirdly, it will not affect the construction inside the well. Fourthly, it is easy to install.

Description

Technical Field

[0001] This invention belongs to the field of power auxiliary facilities technology, and particularly relates to a cable laying auxiliary device. Background Technology

[0002] With the rapid development of the power industry, power cables are widely used in power transmission and distribution networks. High-voltage cables are typically laid through shafts into tunnels. During cable laying, if the shaft opening lacks reliable protection, it can damage the cable's outer sheath and even its internal structure. If this damage is not detected and addressed promptly, it can lead to insulation defects or even insulation breakdown, threatening the safe and stable operation of the power grid.

[0003] Therefore, it is necessary to provide a new cable laying auxiliary device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by disclosing a cable laying auxiliary device to solve the problem of cable scratching when laying cables at wellheads in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a cable laying auxiliary device, including a fixed frame set above the wellhead, a plurality of first rollers rotatably arranged at the upper end of the fixed frame, a plurality of support rods hinged to the upper end of the fixed frame, a connecting rod between two adjacent support rods, a second roller sleeved on the connecting rod, the second rollers being rotatably connected to the connecting rod, two sliding rods slidably arranged inside the connecting rod, the two sliding rods being fixedly connected to two support rods respectively by ropes, a spring hinged between the end of the support rod near the connecting rod and the fixed frame, and the first rollers and the second rollers being arranged in a one-to-one correspondence.

[0006] Preferably, a tension spring is fixed between two slide rods within the same connecting rod.

[0007] Preferably, it also includes a diagonal support, which is detachably connected to the fixing frame.

[0008] Preferably, multiple sides of the diagonal support and fixing frame are detachably connected.

[0009] Preferably, the fixing frame is a rectangular frame with openings at the top and bottom.

[0010] Preferably, the upper end of the inclined support is provided with an L-shaped plate, and each side of the fixing frame is provided with a locking hole that matches the L-shaped plate.

[0011] Preferably, the lower end of the inclined support is provided with a base plate, one end of which is fixedly connected to the inclined support, and the other end extends away from the L-shaped plate.

[0012] Preferably, the two ends of the spring are hinged to the fixing frame and the support rod, respectively.

[0013] Preferably, the angle between the support rod and the two sides of the fixing frame is 45°.

[0014] Preferably, an ear plate, a hinge shaft, and a pin plate are provided between the support rod and the fixing frame. The hinge shaft passes through the pin plate and the ear plate. The ear plate is fixedly connected to the support rod, and the pin plate is fixedly connected to the fixing frame. The support rod rotates around the hinge shaft.

[0015] Compared to existing technologies, this invention places the fixing frame above the wellhead when the cable enters the well from the ground or is pulled from the wellhead to the ground. The first roller converts the static friction between the cable and the wellhead during traditional cable laying into rolling friction, minimizing damage to the cable caused by friction. The second roller ensures a certain distance between the cable and the well wall, preventing the well wall from scratching the cable. Secondly, the formed buffer system can buffer the tensile force during cable laying. Thirdly, neither the fixing frame nor the second roller above the wellhead will affect the construction inside the well. Fourthly, installation is convenient; the fixing frame can simply be placed above the wellhead. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the diagonal support structure according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the second roller according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the tension spring according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Fixed frame, 2. First roller, 3. Support rod, 4. Connecting rod, 5. Second roller, 6. Slide rod, 7. Rope, 8. Spring, 9. Tension spring, 10. Diagonal support, 11. L-shaped plate, 12. Base plate, 13. Ear plate, 14. Hinge shaft, 15. Pin plate, 100. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0024] The following is in conjunction with the appendix Figure 1-5 To further illustrate the present invention, a cable laying auxiliary device includes a fixed frame 1 positioned above a wellhead. Multiple first rollers 2 are rotatably mounted on the upper end of the fixed frame 1. Multiple support rods 3 are also hinged to the upper end of the fixed frame 1. A connecting rod 4 is provided between two adjacent support rods 3. A second roller 5 is sleeved on the connecting rod 4, and the second roller 5 is rotatably connected to the connecting rod 4. Two sliding rods 6 are slidably mounted inside the connecting rod 4. The two sliding rods 6 are fixedly connected to two support rods 3 respectively via ropes 7. A spring 8 is hinged between the end of the support rod 3 near the connecting rod 4 and the fixed frame 1. Specifically, the spring 8 is located below the support rod 3. The support rod 3, spring 8, connecting rod 4, second roller 5, sliding rod 6, and rope 7 cooperate to form a buffer system, which can effectively reduce the tensile force during cable laying. It can automatically perform limited buffering according to the force conditions. For example, when the cable is pulled from the ground into the well, the second roller 5 will be subjected to the downward pull of the cable. The downward movement of the second roller 5 will drive the spring 8 to compress or bend, thereby achieving a buffering effect. When the cable is pulled from the well to the surface, the second roller 5 will be subjected to the upward tension from the cable. The upward movement of the second roller 5 will cause the spring 8 to open, thus providing a buffering effect. The first roller 2 and the second roller 5 are arranged in a one-to-one correspondence, with the second roller 5 located within the fixed frame 1. When the cable enters the well from the surface, it passes through the first roller 2 and the second roller 5 in sequence. The first roller 2 converts the static friction between the cable and the well opening during traditional cable laying into rolling friction, while the second roller 5 ensures a certain distance between the cable and the well wall, thus preventing the well wall from scratching the cable. Furthermore, the resulting buffering system can provide a certain degree of cushioning against the tensile force during cable laying.

[0025] Specifically, the first roller 2 and the second roller 5 are located on the same horizontal plane, and a tension spring 9 is fixed between the two sliding rods 6 within the same connecting rod 4. Moving the second roller 5 upwards or downwards will increase the distance between the two sliding rods 6. The tension spring 9 further enhances the buffering force during cable laying.

[0026] This embodiment also includes a diagonal support 10, which is detachably connected to the fixing frame 1. By setting the diagonal support 10, the fixing frame 1 can be effectively prevented from tipping over during cable construction.

[0027] The inclined support 10 and the fixing frame 1 are detachably connected on multiple sides. When the cable construction direction is changed, it is only necessary to adjust the position of the inclined support 10 on the fixing frame 1.

[0028] The fixing frame 1 is a rectangular frame with openings at the top and bottom, and a second roller 5 is distributed at the top of each side of the fixing frame 1.

[0029] The upper end of the diagonal support 10 is provided with an L-shaped plate 11, and each side of the fixing frame 1 is provided with a locking hole 100 that matches the L-shaped plate 11. This design makes it easy to disassemble and install the diagonal support 10.

[0030] The lower end of the diagonal support 10 is provided with a base plate 12. One end of the base plate 12 is fixedly connected to the diagonal support 10, and the other end extends away from the L-shaped plate 11. The design of the base plate 12 can increase the contact area between the diagonal support 10 and the ground, which can effectively relieve stress.

[0031] Specifically, the two ends of the spring 8 are hinged to the fixed frame 1 and the support rod 3 respectively, and the angle between the support rod 3 and the two sides of the fixed frame 1 is 45°.

[0032] An ear plate 13, a hinge shaft 14, and a pin plate 15 are provided between the support rod 3 and the fixed frame 1. The hinge shaft 14 passes through the pin plate 15 and the ear plate 13. The ear plate 13 is fixedly connected to the support rod 3, and the pin plate 15 is fixedly connected to the fixed frame 1. The support rod 3 rotates around the hinge shaft 14. The ear plate 13, the hinge shaft 14, and the pin plate 15 are also provided at both ends of the spring 8.

[0033] The base plate 12 is rotatably connected to the inclined support 10. The inclined support 10 is provided with a baffle that cooperates with the base plate 12. This structural design facilitates the storage of the base plate 12. Specifically, the inclined support 10 is a flat plate.

[0034] In this invention, the fixing frame 1 is placed above the wellhead. When the cable enters the well from the ground or is pulled from the wellhead to the ground, the first roller 2 converts the static friction between the cable and the wellhead during traditional cable laying into rolling friction, minimizing damage to the cable caused by friction. The second roller 5 ensures that there is a certain distance between the cable and the well wall, thus preventing the well wall from scratching the cable. Secondly, the formed buffer system can buffer the tensile force during cable laying. Thirdly, neither the fixing frame 1 nor the second roller 5 above the wellhead will affect the construction inside the well. Fourthly, installation is convenient; the fixing frame 1 can simply be placed above the wellhead.

[0035] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cable laying auxiliary device, characterized in that, The device includes a fixed frame positioned above the wellhead. The fixed frame is a rectangular frame with openings at the top and bottom. A first roller is rotatably mounted on the upper end of each side of the fixed frame. Multiple support rods are hinged to the upper end of the fixed frame. A connecting rod is provided between adjacent support rods. A second roller is sleeved on the connecting rod, and the second roller is rotatably connected to the connecting rod. Two sliding rods are slidably mounted within the connecting rod. The two sliding rods are fixedly connected to the two support rods respectively by ropes. A spring is hinged between the end of each support rod near the connecting rod and the fixed frame. The first roller and the second roller are arranged in a one-to-one correspondence. A tension spring is fixed between two sliding rods within the same connecting rod. It also includes a diagonal support, which is detachably connected to the fixing frame; multiple sides of the diagonal support and the fixing frame are detachably connected; the upper end of the diagonal support is provided with an L-shaped plate, and each side of the fixing frame has a locking hole adapted to the L-shaped plate; the lower end of the diagonal support is provided with a base plate, one end of which is fixedly connected to the diagonal support, and the other end extends away from the L-shaped plate; both ends of the spring are respectively hinged to the fixing frame and the support rod; an ear plate, a hinge shaft, and a pin plate are provided between the support rod and the fixing frame, the hinge shaft passes through the pin plate and the ear plate, the ear plate is fixedly connected to the support rod, the pin plate is fixedly connected to the fixing frame, and the support rod rotates around the hinge shaft.

2. The cable laying auxiliary device according to claim 1, characterized in that, The angle between the support rod and the two sides of the fixing frame is 45°.

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