An underground cable threading device

Abstract

The utility model discloses an underground cable threading device, including the incoming line inspection well, the transfer inspection well and the outgoing line inspection well that pass through the pipeline communication in proper order, the first rolling guide mechanism for supporting and guiding cable is equipped in the incoming line inspection well and the outgoing line inspection well, the second rolling guide mechanism for supporting and guiding cable is equipped in the transfer inspection well. Through setting first rolling guide mechanism, support the cable, reduce the friction of cable and incoming line inspection well and outgoing line inspection well, through setting second rolling guide mechanism in transfer inspection well, support the cable, reduce the friction of cable and transfer inspection well. Avoid damaging cable when pulling cable, on the other hand, the first rolling guide mechanism plays a guiding role to the cable, and the second rolling guide mechanism plays a steering guiding role to the cable, realizing overall line laying. The utility model has the advantages of simple structure, being favorable to avoiding cable scratching and attrition, reducing traction resistance, improving threading efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of underground pipeline laying technology, specifically to an underground cable threading device. Background Technology

[0002] With the development of urban construction and upgrading, the layout of power and communication cables has gradually shifted from overhead to underground installation. When laying cables underground, pre-buried conduits are often used to protect them. Inspection wells are installed at intervals or bends in the conduits to facilitate cable pulling and subsequent maintenance. After the conduit pre-buried sections and inspection wells are completed, the cables are pulled through the conduits and inspection wells one by one to complete the underground power and communication cable installation.

[0003] The existing technical solutions have the following shortcomings: They mainly use the method of pulling cables to directly insert the cables into the pre-buried pipes and inspection wells. However, the inspection wells are generally not equipped with rolling guide mechanisms. Since the cables are flexible lines and the pipes and inspection wells are rigid structures, during the process of inserting the cables into the inspection wells and pre-buried pipes, on the one hand, the cables are easily damaged by rubbing against the inspection wells. On the other hand, the resistance of pulling the cables is increased, and the cables may even be broken due to excessive pulling force. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an underground cable threading device with a simple structure that helps to avoid cable scratches and wear, reduce traction resistance, and improve threading efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An underground cable threading device includes an inlet inspection well, a transfer inspection well, and an outlet inspection well connected in sequence by a pipe. The inlet and outlet inspection wells are each provided with a first rolling guide mechanism for supporting and guiding the cable, and the transfer inspection well is provided with a second rolling guide mechanism for side-supporting and guiding the cable.

[0006] As a further improvement to the above technical solution: the first rolling guide mechanism includes an installation component and a first roller rotatably mounted on the installation component, wherein the installation component is located inside the inlet inspection well or the outlet inspection well.

[0007] As a further improvement to the above technical solution: the mounting component is a telescopic support rod, and the two ends of the mounting component are respectively supported on the two opposite inner walls of the inlet inspection well or the outlet inspection well.

[0008] As a further improvement to the above technical solution: the first roller is movably sleeved on the mounting component and can move along the axial direction of the mounting component.

[0009] As a further improvement to the above technical solution: the installation component includes a first support rod and a second support rod, one end of the first support rod and the second support rod are threaded together, and the other end is respectively supported on the corresponding inner wall of the inlet inspection well or the outlet inspection well. The first roller is provided on the first support rod or the second support rod, and the first support rod and / or the second support rod is provided with a rotating handle.

[0010] As a further improvement to the above technical solution: the second rolling guide mechanism includes a mounting frame and a second roller. The mounting frame is installed inside the transfer inspection well, and the second roller is installed on the mounting frame and forms a cable passage between the roller and the mounting frame for the cable to pass through.

[0011] As a further improvement to the above technical solution: the mounting frame includes a connecting seat, a mounting rod and two mounting arms. One end of the mounting rod is fixed to the inner wall of the transfer inspection well, and the other end protrudes into the middle of the transfer inspection well. The connecting seat is located at the protruding end of the mounting rod. The two mounting arms are detachably mounted on the connecting seat and arranged at intervals. The second roller is located between the two mounting arms. The wire threading channel is formed between the second roller, the connecting seat and the two mounting arms.

[0012] As a further improvement to the above technical solution: the mounting rod includes an adjusting rod, an adjusting sleeve, and a connecting rod that are movably connected in sequence. The adjusting sleeve is provided with an adjusting handle, and the two ends of the adjusting sleeve are respectively provided with locking elements for locking the adjusting rod and the connecting rod. The adjusting rod is fixed on the inner wall of the transfer inspection well, and the connecting seat is provided on the connecting rod.

[0013] As a further improvement to the above technical solution: both the inlet and outlet of the inlet inspection well are equipped with a third rolling guide mechanism.

[0014] As a further improvement to the above technical solution: the third rolling guide mechanism includes a mounting base and a third roller disposed on the mounting base, wherein the mounting base is detachably disposed at the inlet of the inlet inspection well or the outlet of the outlet inspection well.

[0015] Compared with the existing technology, the advantages of this utility model are: firstly, by setting up underground inspection wells, transit inspection wells and outgoing inspection wells for cables to be laid underground, there is no need to occupy above-ground space, which greatly improves the cleanliness of the city.

[0016] Secondly, by setting up a first rolling guide mechanism to support the cable and guide it, the friction between the cable and the inlet and outlet inspection wells is reduced; by setting up a second rolling guide mechanism to side support the cable in the transfer inspection well, the cable is guided and steered, reducing the friction between the cable and the transfer inspection well; thus, it is beneficial to avoid cable scratches and wear.

[0017] Third, the first rolling guide mechanism guides the cable and the second rolling guide mechanism steers the cable, thus achieving the overall line laying, reducing the resistance of the traction cable, and helping to avoid the cable breaking due to excessive traction force. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an underground cable threading device according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the first rolling guide mechanism of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the second rolling guide mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram of the third rolling guide mechanism of this utility model.

[0022] The labels in the diagram represent: 11. Incoming inspection well; 12. Outgoing inspection well; 13. Transfer inspection well; 2. Cable; 3. First rolling guide mechanism; 31. Mounting component; 311. First support rod; 312. Second support rod; 313. Rotating handle; 32. First roller; 4. Pipe; 5. Second rolling guide mechanism; 51. Mounting bracket; 511. Mounting arm; 512. Connecting seat; 513. Mounting rod; 5131. Adjusting rod; 5132. Adjusting sleeve; 5133. Connecting rod; 5134. Adjusting handle; 52. Second roller; 53. Cable threading channel; 6. Third rolling guide mechanism; 61. Mounting seat; 62. Third roller. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] like Figures 1 to 4 As shown, the underground cable threading device of this embodiment includes an inlet inspection well 11, a transfer inspection well 13 and an outlet inspection well 12 connected in sequence through a pipe 4. The inlet inspection well 11 and the outlet inspection well 12 are each provided with a first rolling guide mechanism 3 for supporting the guide cable 2, and the transfer inspection well 13 is provided with a second rolling guide mechanism 5 for side support of the guide cable 2.

[0028] The specific operating principle of this underground cable threading device is as follows: In use, cable 2 is threaded from the ground into the inlet inspection well 11, and bypasses the first rolling guide mechanism 3. It then passes through the pipe 4 connected to the inlet inspection well 11 via the supporting and guiding action of the first rolling guide mechanism 3. Next, cable 2 passes through the pipe 4 connected to the inlet inspection well 11 into the transfer inspection well 13, and bypasses the second rolling guide mechanism 5 within the transfer inspection well 13. The second rolling guide mechanism 5 within the transfer inspection well 13 provides lateral support and guidance, causing cable 2 to change direction within the transfer inspection well 13 before threading into the pipe 4 connecting the transfer inspection well 13 and the outlet inspection well 12. Then, cable 2 passes through the pipe 4 connecting the transfer inspection well 13 and the outlet inspection well 12 into the outlet inspection well 12. Finally, cable 2 bypasses the first rolling guide mechanism 3 within the outlet inspection well 12 and exits from the outlet inspection well 12 to the ground via the supporting and guiding action of the first rolling guide mechanism 3 within the outlet inspection well 12.

[0029] The above-mentioned special design gives this underground cable threading device the following advantages: Firstly, by setting up underground inspection wells 11, 13, and 12 for cable 2 to be laid underground, the cable does not need to occupy above-ground space, which greatly improves the cleanliness of the city.

[0030] Secondly, by setting the first rolling guide mechanism 3 to support the cable 2, the cable 2 is guided, reducing the friction between the cable 2 and the inlet inspection well 11 and the outlet inspection well 12; by setting the second rolling guide mechanism 5 to support the cable 2 on the side of the transfer inspection well 13, the cable 2 is guided to turn, reducing the friction between the cable 2 and the transfer inspection well 13; thus, it is beneficial to avoid the cable 2 from scratching and wearing out.

[0031] Third, the first rolling guide mechanism 3 guides the cable 2 and the second rolling guide mechanism 5 turns the cable 2, thus realizing the overall line laying, reducing the resistance of the cable 2 and helping to avoid the cable breaking due to excessive traction force.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, the first rolling guide mechanism 3 includes a mounting component 31 and a first roller 32 rotatably mounted on the mounting component 31. The mounting component 31 is located inside the inlet inspection well 11 or the outlet inspection well 12. When the cable 2 passes through the first rolling guide mechanism 3, it is wound around the first roller 32. On the one hand, the first roller 32 plays a rolling guide role for the pulled cable 2, greatly improving the cable threading efficiency. On the other hand, by setting the first roller 32, the cable 2 can be prevented from contacting the side walls of the inlet inspection well 11 and the outlet inspection well 12, thus avoiding wear on the cable 2.

[0033] Furthermore, such as Figure 2 As shown, in this embodiment, the mounting component 31 is a telescopic support rod, with both ends of the mounting component 31 abutting against the two opposite inner walls of the inlet inspection well 11 or the outlet inspection well 12. Specifically, the two ends of the mounting component 31 inside the inlet inspection well 11 abut against the two opposite inner walls of the inlet inspection well 11, and the two ends of the mounting component 31 inside the outlet inspection well 12 abut against the two opposite inner walls of the outlet inspection well 12. During installation, the mounting component 31 is first inserted into the inlet inspection well 11 or the outlet inspection well 12 in a retracted state, and then the mounting component 31 is extended so that both ends of the mounting component 31 abut against the two opposite inner walls of the inlet inspection well 11 or the outlet inspection well 12, thereby realizing the installation of the first rolling guide mechanism 3. Conversely, the first rolling guide mechanism 3 is removed and can be reused in the next cable threading. By setting the mounting component 31 as an adjustable-length telescopic support, on the one hand, it can adapt to the installation of different sizes of inlet inspection wells 11 and outlet inspection wells 12, greatly improving the applicability of the device; on the other hand, it is easy to disassemble and reuse.

[0034] Furthermore, such as Figure 2As shown, in this embodiment, the first roller 32 is movably sleeved on the mounting component 31 and can move along the axial direction of the mounting component 31. By movably sleeved on the mounting component 31, the first roller 32 can be moved along the axial direction of the mounting component 31 when the cable 2 is threaded through it, preventing the cable 2 from being pulled off the first roller 32 and greatly improving the reliability of the device. Of course, in other embodiments, a locking mechanism can also be provided on the first roller 32 to lock the first roller 32 onto the mounting component 31 when needed.

[0035] Furthermore, such as Figure 2 As shown, in this embodiment, the mounting component 31 includes a first support rod 311 and a second support rod 312. One end of the first support rod 311 and the second support rod 312 are threaded together, and the other end is respectively supported on the inner wall of the inlet inspection well 11 or the outlet inspection well 12. A first roller 32 is provided on the first support rod 311, and a rotating handle 313 is provided on the second support rod 312. Of course, in other embodiments, the first roller 32 can be provided on the second support rod 312, and the rotating handle 313 can be provided on the first support rod 311. These are all within the protection scope of this utility model. By setting the threaded connection of the first support rod 311 and the second support rod 312, it is convenient to adjust the overall length of the mounting component 31 by rotating the rotating handle 313. Compared with the telescopic rod fixed by a snap-fit, the threaded adjustment of the length has higher stability and is more suitable for situations where there is impact when pulling the cable 2, which greatly improves the reliability of the device.

[0036] Furthermore, such as Figure 1 and Figure 3 As shown, in this embodiment, the second rolling guide mechanism 5 includes a mounting frame 51 and a second roller 52. The mounting frame 51 is disposed inside the transfer inspection well 13, and the second roller 52 is disposed on the mounting frame 51, forming a threading channel 53 between the roller and the mounting frame 51 for the cable 2 to pass through. When the cable 2 passes through the second rolling guide mechanism 5, it passes through the threading channel 53 and wraps around the second roller 52. On the one hand, the second roller 52 provides a rolling guide for the pulled cable 2, greatly improving the threading efficiency. On the other hand, by setting the second roller 52, the cable 2 does not come into contact with the side wall of the transfer inspection well 13, avoiding wear on the cable 2. This serves both to protect the cable 2 and to guide its direction. Furthermore, the cable 2 passes through the threading channel 53 between the second roller 52 and the mounting frame 51, and the circumferential limiting effect of the threading channel 53 prevents the cable 2 from detaching from the second roller 52. Preferably, the second roller 52 is arranged laterally on the mounting bracket 51, that is, the rotation axis of the second roller 52 is arranged vertically, which facilitates the horizontal turning of the cable 2.

[0037] Furthermore, such as Figure 3As shown, in this embodiment, the mounting bracket 51 includes a connecting seat 512, a mounting rod 513, and two mounting arms 511. One end of the mounting rod 513 is fixed to the inner wall of the transfer inspection well 13, and the other end protrudes into the middle of the transfer inspection well 13. The connecting seat 512 is located at the protruding end of the mounting rod 513. The two mounting arms 511 are detachably mounted on the connecting seat 512 and spaced apart. A second roller 52 is located between the two mounting arms 511. A cable threading channel 53 is formed between the second roller 52, the connecting seat 512, and the two mounting arms 511. In use, the cable 2 can be placed in or removed from the cable threading channel 53 by unfastening the detachable connection between one mounting arm 511 and the connecting seat 512 (which can be a snap-fit ​​connection, screw connection, etc.), facilitating the placement and removal of the cable 2 in the cable threading channel 53. Furthermore, after the cable 2 is laid out, the connection between the mounting arm 511 and the connecting seat 512 can be disconnected first, and then the fixed connection between the mounting rod 513 and the inner wall of the transfer inspection well 13 can be disconnected. This allows for quick and convenient retrieval of the second rolling guide mechanism 5, facilitating reuse for the next wiring operation. Preferably, one mounting arm 511 is hinged to the connecting seat 512, and the other mounting arm 511 is connected to the connecting seat 512 via a locking pin.

[0038] Furthermore, such as Figure 3 As shown, in this embodiment, the mounting rod 513 includes an adjusting rod 5131, an adjusting sleeve 5132, and a connecting rod 5133 that are sequentially movably sleeved together. The adjusting sleeve 5132 is provided with an adjusting handle 5134. Both ends of the adjusting sleeve 5132 are respectively provided with locking components (not shown in the figure, but are existing conventional components, such as locking screws, locking pins, clamps, etc.) for locking the adjusting rod 5131 and the connecting rod 5133. The adjusting rod 5131 is fixed on the inner wall of the transfer inspection well 13, and the connecting seat 512 is provided on the connecting rod 5133. The mounting rod 513 is configured as an adjustable-length split structure by sequentially connecting the adjusting rod 5131, the adjusting sleeve 5132, and the connecting rod 5133. When the length of the mounting rod 513 needs to be adjusted, only the adjusting handle 5134 needs to be rotated to adjust the relative position of the adjusting rod 5131 and the connecting rod 5133, thereby adjusting the length of the mounting rod 513. After adjustment, the locking piece locks the adjusting rod 5131 and the connecting rod 5133 to prevent the adjusting sleeve 5132 from rotating and causing a change in length. This special design greatly improves the applicability of the device and also facilitates the disassembly and reuse of the second rolling guide mechanism 5.

[0039] Furthermore, such as Figure 1 and Figure 4 As shown, in this embodiment, a third rolling guide mechanism 6 is provided at both the inlet of the inlet inspection well 11 and the outlet of the outlet inspection well 12. By setting the third rolling guide mechanism 6, the friction between the cable 2 and the inlet of the inlet inspection well 11 and the outlet of the outlet inspection well 12 is reduced, and the cable 2 is guided, which greatly improves the wiring efficiency and wiring reliability.

[0040] Furthermore, such as Figure 4 As shown, in this embodiment, the third rolling guide mechanism 6 includes a mounting base 61 and a third roller 62 disposed on the mounting base 61. The mounting base 61 is detachably disposed at the inlet of the inlet inspection well 11 or the outlet of the outlet inspection well 12. The cable 2 passes through the third roller 62 at the inlet of the inlet inspection well 11 and exits through the third roller 62 at the outlet of the outlet inspection well 12 to the ground. Under the rolling guide action of the third roller 62, the friction between the cable 2 and the inlet and outlet inspection wells 11 and 12 is greatly reduced. By detachably disposing of the mounting base 61 at the inlet of the inlet of the inlet inspection well 11 or the outlet of the outlet of the outlet inspection well 12, the mounting base 61 can be removed for recycling after the cable 2 has been threaded through. This greatly improves the utilization efficiency of the device. Specifically, the inlet inspection well 11 has an inlet hole on one side wall that is connected to the corresponding pipe 4, and the inlet of the inlet inspection well 11 is located at the top of the other side wall of the inlet inspection well 11. The outlet inspection well 12 has an outlet hole on one side wall that is connected to the corresponding pipe 4, and the outlet of the outlet inspection well 12 is located at the top of the other side wall of the outlet inspection well 12.

[0041] like Figure 4 As shown, the mounting base 61 is a right-angle mounting base, which is convenient to be installed on the side wall of the inlet of the inlet inspection well 11 and the outlet of the outlet inspection well 12.

[0042] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. An underground cable threading device, comprising an inlet inspection well (11), a transfer inspection well (13), and an outlet inspection well (12) connected sequentially by a pipe (4), characterized in that: Both the inlet inspection well (11) and the outlet inspection well (12) are equipped with a first rolling guide mechanism (3) for supporting the guide cable (2), and the transfer inspection well (13) is equipped with a second rolling guide mechanism (5) for side-supporting the guide cable (2).

2. The underground cable threading device according to claim 1, characterized in that: The first rolling guide mechanism (3) includes a mounting component (31) and a first roller (32) rotatably mounted on the mounting component (31). The mounting component (31) is located in the inlet inspection well (11) or the outlet inspection well (12).

3. The underground cable threading device according to claim 2, characterized in that: The mounting component (31) is a telescopic support rod, and the two ends of the mounting component (31) are respectively supported on the two opposite inner walls of the inlet inspection well (11) or the outlet inspection well (12).

4. The underground cable threading device according to claim 3, characterized in that: The first roller (32) is movably sleeved on the mounting component (31) and can move along the axial direction of the mounting component (31).

5. The underground cable threading device according to claim 3, characterized in that: The mounting component (31) includes a first support rod (311) and a second support rod (312). One end of the first support rod (311) and the second support rod (312) are threaded together, and the other end is respectively supported on the inner wall of the inlet inspection well (11) or the outlet inspection well (12). The first roller (32) is provided on the first support rod (311) or the second support rod (312). The first support rod (311) and / or the second support rod (312) are provided with a rotating handle (313).

6. The underground cable threading device according to claim 1, characterized in that: The second rolling guide mechanism (5) includes a mounting frame (51) and a second roller (52). The mounting frame (51) is located inside the transfer inspection well (13), and the second roller (52) is located on the mounting frame (51) and forms a cable passage (53) between the roller and the mounting frame (51) for the cable (2) to pass through.

7. The underground cable threading device according to claim 6, characterized in that: The mounting bracket (51) includes a connecting seat (512), a mounting rod (513), and two mounting arms (511). One end of the mounting rod (513) is fixed to the inner wall of the transfer inspection well (13), and the other end protrudes into the middle of the transfer inspection well (13). The connecting seat (512) is located at the protruding end of the mounting rod (513). The two mounting arms (511) are detachably mounted on the connecting seat (512) and spaced apart. The second roller (52) is located between the two mounting arms (511). The wire threading channel (53) is formed between the second roller (52), the connecting seat (512), and the two mounting arms (511).

8. The underground cable threading device according to claim 7, characterized in that: The mounting rod (513) includes an adjusting rod (5131), an adjusting sleeve (5132), and a connecting rod (5133) that are movably connected in sequence. The adjusting sleeve (5132) is provided with an adjusting handle (5134). The two ends of the adjusting sleeve (5132) are respectively provided with locking elements for locking the adjusting rod (5131) and the connecting rod (5133). The adjusting rod (5131) is fixed on the inner wall of the transfer inspection well (13). The connecting seat (512) is provided on the connecting rod (5133).

9. The underground cable threading device according to any one of claims 1 to 8, characterized in that: The inlet of the inlet inspection well (11) and the outlet of the outlet inspection well (12) are both equipped with a third rolling guide mechanism (6).

10. The underground cable threading device according to claim 9, characterized in that: The third rolling guide mechanism (6) includes a mounting base (61) and a third roller (62) disposed on the mounting base (61). The mounting base (61) is detachably disposed at the inlet of the inlet inspection well (11) or the outlet of the outlet inspection well (12).

Images