An HPVC power pipe facilitating the installation of overhead cables

Abstract

An HPVC power pipe facilitating the installation of overhead cables, which relates to the technical field of HPVC power pipes, includes a starting outer pipe and a connecting outer pipe that can be connected to each other, a driving inner pipe and a driven inner pipe that can be connected to each other, a driving mechanism, a limit support frame detachably installed on the starting outer pipe or the connecting outer pipe, a limit rod detachably installed on the limit support frame, and a traction block slidably installed on the limit rod; a driving inner pipe is coaxially and rotatably installed in the starting outer pipe; a driven inner pipe is coaxially and rotatably installed in the connecting outer pipe; spiral grooves are provided on the inner walls of both the driving inner pipe and the driven inner pipe; a pin shaft that can be slidably installed in the spiral groove is fixedly provided on the traction block; the driving mechanism includes a mounting frame detachably installed on the starting outer pipe, a driving motor fixedly installed on the mounting frame, a driving gear rotatably installed on the mounting frame, and a driven gear ring coaxially and fixedly installed on the driving inner pipe and meshing with the driving gear.

Description

Technical Field

[0001] The present invention relates to the technical field of HPVC power pipes, and particularly to an HPVC power pipe facilitating the installation of overhead cables. Background Art

[0002] The HPVC power pipe is a new type of high-performance pipe, featuring high strength, high toughness, high compressive strength, good flame retardancy, corrosion resistance, etc., and can replace plastic-coated or galvanized steel pipes as communication cable protection pipes.

[0003] An overhead cable is an overhead conductor equipped with an insulating layer and a protective outer skin, a special cable manufactured using a production process similar to that of cross-linked cables, and is a new power transmission method between overhead conductors and underground cables. In some scenarios, an HPVC power pipe needs to be sleeved outside the outer layer when installing the overhead cable. For example: 1. Overhead cables less than two meters above the ground; 2. Overhead cables in a multi-bundle shape.

[0004] However, when installing the power pipe for the current overhead cable, the cable needs to be installed first, and then the power pipe is sleeved around the cable from the outside. In the case of a long cable, due to the softness and uncertainty of the cable itself, the head of the cable cannot always maintain the same direction when passing through the power pipe, resulting in an extremely cumbersome sleeving process. Moreover, the existing power pipes need to be cut or melt-connected, etc. to adapt to cables of different lengths, increasing the installation difficulty.

[0005] Therefore, it is necessary to invent an HPVC power pipe that facilitates the installation of overhead cables. Summary of the Invention

[0006] In view of the above problems, the present invention provides an HPVC power pipe facilitating the installation of overhead cables, and the technical solution used is as follows:

[0007] An HPVC power pipe facilitating the installation of overhead cables includes a starting outer pipe and a connecting outer pipe that can be connected to each other, a driving inner pipe and a driven inner pipe that can be connected to each other, a driving mechanism, a limit support frame detachably installed on the starting outer pipe or the connecting outer pipe, a limit rod detachably installed on the limit support frame, and a traction block slidably installed on the limit rod; the two connecting outer pipes can be connected to each other; the two driven inner pipes can be connected to each other; the driving inner pipe is coaxially and rotatably installed inside the starting outer pipe; the driven inner pipe is coaxially and rotatably installed inside the connecting outer pipe; spiral grooves are provided on the inner walls of the driving inner pipe and the driven inner pipe; a pin shaft slidably installed in the spiral groove is fixedly provided on the traction block; the driving mechanism includes a mounting bracket detachably installed on the starting outer pipe, a driving motor fixedly installed on the mounting bracket, a driving gear rotatably installed on the mounting bracket, and a driven gear ring coaxially and fixedly installed on the driving inner pipe and meshing with the driving gear.

[0008] Furthermore, a coil spring connector is provided on the starting outer tube; the coil spring connector includes a connecting shaft fixedly mounted on the starting outer tube, and a rotating shaft rotatably mounted inside the connecting shaft, and a coil spring is provided between the rotating shaft and the connecting shaft; the driving mechanism also includes an upper rotating frame and a lower rotating frame that can be detachably mounted on the rotating shaft, an upper guide wheel rotatably mounted on the upper rotating frame, and a lower guide wheel rotatably mounted on the lower rotating frame.

[0009] Furthermore, the driving mechanism also includes an upper rotating gear fixedly mounted on the upper rotating frame, a lower rotating gear fixedly mounted on the lower rotating frame, an adjusting gear coaxially fixedly mounted on the output end of the driving motor, a movable frame slidably mounted on the mounting frame, and a sliding plate and rack 2 fixedly mounted on the movable frame; rack 2 is intermittently meshed with the lower rotating gear; rack 1 is fixedly mounted on the sliding plate, and sliding teeth are slidably mounted on the sliding plate; rack 1 and the sliding teeth are elastically connected; the adjusting gear is intermittently meshed with rack 1 or the sliding teeth; the upper rotating gear is intermittently meshed with rack 1 or the sliding teeth.

[0010] Furthermore, the adjusting gear is synchronously connected with the driving gear. Furthermore, a plurality of extrusion blocks are elastically installed in the traction block.

[0011] Furthermore, the starting outer tube and the connecting outer tube, and the two connecting outer tubes are fixedly installed together via connecting sleeves.

[0012] Furthermore, the starting outer tube is fixedly mounted on the installation position via a fixing frame.

[0013] Furthermore, the starting outer tube and the connecting outer tube, and the two connecting outer tubes are connected by pins.

[0014] Furthermore, the active inner tube and the driven inner tube, and the two driven inner tubes are connected by pins.

[0015] Furthermore, the limiting rod is installed on the limiting support frame in an interlaced manner.

[0016] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0017] 1. Through the cooperative design of the starting outer tube, the active inner tube, the connecting outer tube, the driven inner tube, the driving mechanism, the traction block, the limiting support frame, and the limiting rod, on the one hand, the number of the connecting outer tube and the driven inner tube can be selected according to the actual length of the overhead cable, and the starting outer tube, the active inner tube, the connecting outer tube, and the driven inner tube can be freely combined together with a simple connection method. On the other hand, driven by the driving mechanism, the traction block can drive the end of the overhead cable to move, enabling the overhead cable to automatically enter the inside of the power tube, saving manpower.

[0018] 2. The driving mechanism, the traction block, the limiting support frame, and the limiting rod of the present invention are all installed in a detachable manner. After the installation of the overhead cable is completed, the driving mechanism, the traction block, the limiting support frame, and the limiting rod can all be removed for recycling, thus saving resources and costs.

[0019] 3. The traction block of the present invention can fix the end of the overhead cable in a multi-bundle shape at one time, reducing the installation difficulty of the overhead cable and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figures 1-3 It is the installation schematic diagram of the present invention.

[0021] Figure 4 It is the assembly structure schematic diagram of the starting section during the installation of the present invention.

[0022] Figure 5 It is the assembly structure schematic diagram of the end section during the installation of the present invention.

[0023] Figure 6 It is the assembly structure schematic diagram of the starting outer tube, the active inner tube, the driving mechanism, the traction block, the limiting support frame, the fixing frame, and the overhead cable of the present invention.

[0024] Figures 7-10 It is the partial structure schematic diagram of the driving mechanism of the present invention.

[0025] Figure 11 It is the exploded structure schematic diagram of the starting outer tube, the active inner tube, the driving mechanism, the traction block, and the overhead cable of the present invention.

[0026] Figure 12 It is the starting section structure schematic diagram of the starting outer tube, the active inner tube, the traction block, and the overhead cable of the present invention.

[0027] Figure 13 It is the end section structure schematic diagram of the starting outer tube and the active inner tube of the present invention.

[0028] Figure 14 It is the assembly structure schematic diagram of the connecting outer tube and the driven inner tube of the present invention.

[0029] Figure 15Schematic diagram of the starting section structure for connecting the outer tube and the driven inner tube of the present invention.

[0030] Figure 16 Schematic diagram of the ending section structure for connecting the outer tube and the driven inner tube of the present invention.

[0031] Figure 17 Schematic diagram of the ending section structure for connecting the outer tube and the driven inner tube with a limiting support frame assembled according to the present invention.

[0032] Figure 18 Schematic diagram of the assembly structure of the starting outer tube, the driving inner tube, the traction block and the limiting support frame according to the present invention.

[0033] Figure 19 For the present invention Figure 18 Schematic diagram of the cross-sectional structure of the A-A section in the present invention.

[0034] Figures 20-21 Schematic diagram of the traction block according to the present invention.

[0035] Figure 22 Schematic diagram of the starting section structure of the starting outer tube with a limiting support frame assembled according to the present invention.

[0036] Figure 23 For the present invention Figure 22 Schematic diagram of the partial enlarged structure at position B in the present invention.

[0037] Reference numerals in the drawings:

[0038] 1 - Starting outer tube; 101 - Insertion hole 1; 102 - Coil spring connection body (1021 - Connection shaft; 1022 - Rotation shaft);

[0039] 2 - Driving inner tube; 201 - Helical groove 1; 202 - Insertion hole 2;

[0040] 3 - Connecting outer tube; 301 - Insertion pin 1; 302 - Insertion hole 3;

[0041] 4 - Driven inner tube; 401 - Helical groove 2; 402 - Insertion pin 2; 403 - Insertion hole 4;

[0042] 5 - Driving mechanism; 501 - Mounting frame (5011 - Limiting sliding groove); 502 - Driving motor; 503 - Adjusting gear; 504 - Moving frame; 505 - Sliding plate (5051 - Rack 1; 5052 - Sliding tooth; 5053 - Compression spring rod); 506 - Upper rotating gear; 507 - Upper rotating frame; 508 - Upper guide wheel; 509 - Rack 2; 510 - Lower rotating gear; 511 - Lower rotating frame; 512 - Lower guide wheel; 513 - Bevel gear set (5131 - Input bevel gear; 5132 - Output bevel gear); 514 - Driving gear; 515 - Driven gear ring;

[0043] 6 - Traction block; 601 - Pin shaft; 602 - Extrusion block; 603 - Compression spring; 604 - Limit hole;

[0044] 7 - Limit support frame; 701 - Mounting hole;

[0045] 8 - Limit rod;

[0046] 9 - Connecting sleeve;

[0047] 10 - Fixed frame. Specific embodiments

[0048] The technical solutions of the present invention will be further specifically described below through embodiments in combination with the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inward", "outward", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. Embodiment

[0050] This embodiment discloses an HPVC power pipe for facilitating the installation of overhead cables. As Figures 1-5 shown, it includes a starting outer pipe 1, a driving inner pipe 2, a connecting outer pipe 3, a driven inner pipe 4, a driving mechanism 5, a traction block 6, a limit support frame 7, a limit rod 8, a connecting sleeve 9, and a fixed frame 10; the driving inner pipe 2 is coaxially and rotatably installed inside the starting outer pipe 1, and the starting outer pipe 1 is fixedly installed at an installation position such as a hanging rack or a wall through the fixed frame 10; a driven inner pipe 4 is coaxially and rotatably installed inside each connecting outer pipe 3; the connecting outer pipe 3 is connected to the starting outer pipe 1 or other connecting outer pipes 3 through the connecting sleeve 9; the driving mechanism 5 is detachably installed on the starting section of the starting outer pipe 1; the limit support frame 7 is integrally L-shaped, and its long plate is detachably installed on the starting section of the starting outer pipe 1 or the end section of the connecting outer pipe 3, for example, fixed installation is carried out through fastening bolts; an installation hole 701 corresponding to the limit rod 8 is provided on the short plate of the limit support frame 7, and the limit rod 8 can pass through the installation hole 701 and be installed inside the driving inner pipe 2 and the driven inner pipe 4; the traction block 6 can be slidably installed on the limit rod 8.

[0051] AsFigures 6-10 As shown in the figure, the driving mechanism 5 includes a mounting frame 501, a driving motor 502, an adjusting gear 503, a moving frame 504, a sliding plate 505, an upper rotating gear 506, an upper rotating frame 507, an upper guide wheel 508, a second rack 509, a lower rotating gear 510, a lower rotating frame 511, a lower guide wheel 512, a bevel gear set 513, a driving gear 514 and a driven gear ring 515. When installing the overhead cable, the mounting frame 501 is fixedly installed on the starting section of the starting outer pipe 1 in a detachable manner, such as by rope bundling connection or bonding. The driving motor 502 is fixedly installed on the mounting frame 501, and its output end is coaxially and fixedly connected to the adjusting gear 503 rotatably installed on the mounting frame 501. In this embodiment, the driving motor 502 is a high-torque and low-speed motor. The moving frame 504 is horizontally slidably installed on the mounting frame 501, the sliding plate 505 is horizontally fixedly installed on the upper end of the moving frame 504, and the second rack 509 is horizontally fixedly installed on the lower end of the moving frame 504.

[0052] The mounting frame 501 is provided with a limiting chute 5011, and the sliding plate 505 is horizontally slidably installed in the limiting chute 5011. A first rack 5051 is horizontally fixedly provided on the sliding plate 5051, and a sliding tooth 5052 is slidably installed thereon. The sliding tooth 5052 is located on the front side of the first rack 5051, and the sliding tooth 5052 and the front end of the first rack 5051 are elastically connected by a compression spring rod 5053. The adjusting gear 503 intermittently meshes with the first rack 5051 or the sliding tooth 5052. The second rack 509 is horizontally slidably connected to the mounting frame 501.

[0053] As Figure 12 、 Figure 18 and Figures 22-23 shown, two sets of spring connecting bodies 102 are provided on the upper and lower halves of the starting section of the starting outer pipe 1. Each spring connecting body 102 includes a connecting shaft 1021 and a rotating shaft 1022. The connecting shaft 1021 is fixedly installed on the outer side surface of the starting outer pipe 1 through a connecting plate, the rotating shaft 1022 is coaxially rotatably installed inside the connecting shaft 1021, and a spring is provided between the rotating shaft 1022 and the connecting shaft 1021. A fixed clamping plate is provided at the outer end of the rotating shaft 1022, and the upper rotating frame 507 and the lower rotating frame 511 are provided with insertion holes corresponding to the rotating shaft 1022 and its fixed clamping plate. Through the setting of the insertion holes, the upper rotating frame 507 and the lower rotating frame 511 can be fixedly installed on the corresponding rotating shaft 1022 in an inlaid manner. The upper guide wheel 508 is rotatably installed on the upper rotating frame 507, and the lower guide wheel 512 is rotatably installed on the lower rotating frame 511. After the upper rotating frame 507 and the lower rotating frame 511 are installed, the elastic potential energy stored in the spring will drive the upper rotating frame 507 and the lower rotating frame 511 to rotate in a direction approaching each other, and the upper guide wheel 508 and the lower guide wheel 512 will come into contact.

[0054] The upper rotating gear 506 is fixedly mounted on the upper rotating frame 507, and the upper rotating gear 506 is intermittently meshed with the rack 1 5051 or the sliding gear 5052; the lower rotating gear 510 is fixedly mounted on the lower rotating frame 511, and the lower rotating gear 510 is intermittently meshed with the rack 2 509;

[0055] The bevel gear set 513 includes an input bevel gear 5131 and an output bevel gear 5132 which are both rotatably mounted on the mounting frame 501 and meshed with each other. The input bevel gear 5131 is synchronously connected to the adjusting gear 503 through a transmission wheel and a transmission belt, and the output bevel gear 5132 is coaxially fixedly connected to a driving gear 514 rotatably mounted on the mounting frame 501; the driven ring gear 515 is coaxially fixedly mounted on the starting section of the active inner tube 2 and meshed with the driving gear 514.

[0056] like Figures 11-21 As shown, a spiral groove 1 201 is provided on the inner wall of the active inner tube 2, and a spiral groove 2 401 is provided on the inner wall of the driven inner tube 4; four insertion holes 101 are evenly distributed along the circumference on the tail end of the starting outer tube 1, and four insertion holes 202 are evenly distributed along the circumference on the tail end of the active inner tube 2; four insertion holes 302 with the same specifications as the insertion holes 101 are evenly distributed along the circumference on the tail end of the connecting outer tube 3, and four insertion pins 1 301 are evenly fixedly installed along the circumference on the head end, and the insertion pins 1 301 can cooperate with the insertion holes 1 101 or the insertion holes 302; four insertion holes 403 with the same specifications as the insertion holes 202 are evenly distributed along the circumference on the tail end of the driven inner tube 4, and four insertion pins 2 402 are evenly fixedly installed along the circumference on the head end, and the insertion pins 2 402 can cooperate with the insertion holes 202 or the insertion holes 403;

[0057] The connection between the tubes is performed: on the one hand, the insertion pin 1 301 on the connecting outer tube 3 is inserted into the insertion hole 101 of the starting outer tube 1, and the insertion pin 2 402 of the driven inner tube 4 is inserted into the insertion hole 202 of the active inner tube 2, that is, the connecting outer tube 3 is connected to the starting outer tube 1, the driven inner tube 4 is connected to the active inner tube 2, and the spiral groove 2 401 is butted end to end with the spiral groove 1 201; on the other hand, the insertion pin 1 301 on the connecting outer tube 3 is inserted into the insertion hole 302 of another connecting outer tube 3, and the driven inner tube 4 is inserted into the insertion hole 403 of another driven inner tube 4, that is, the two connecting outer tubes 3 are connected to each other, the two driven inner tubes 4 are connected to each other, and the two spiral grooves 2 401 are butted end to end;

[0058] The traction block 6 is integrally cylindrical, and two pin shafts 601 are fixedly arranged on its outer side wall. Each pin shaft 601 can be slidably installed in the first spiral groove 201 or the second spiral groove 401; a limiting hole 604 corresponding to the limiting rod 8 penetrates through the traction block 6, and the traction block 6 is slidably installed on the limiting rod 8 through the limiting hole 604; four extrusion blocks 602 are uniformly arranged along the circumference inside the traction block 6, and the extrusion blocks 602 are elastically connected to the inner wall of the traction block 6 through compression springs 603; when the overhead cable passes through the space in the middle of the four extrusion blocks 602, the extrusion blocks 602 are pushed outwards, and the compression springs 603 are compressed to generate a rebound effect, so that the extrusion blocks 602 press the overhead cable tightly, thereby fixing the end of the overhead cable between the four extrusion blocks 602.

[0059] In this embodiment, the limiting rod 8 is made of steel wire rope; a wiring terminal is provided on the fixing frame 10, and the wiring terminal is connected to the driving motor 502 through a wire. The staff connects the driving motor 502 to the power supply control terminal carried by himself through the wiring terminal, and controls the opening and closing of the driving motor 502 through the power supply control terminal.

[0060] The usage method of this embodiment is as follows:

[0061] First step, fixedly install the fixing frame 10 at an installation position such as a hanging rack or a wall, insert the starting outer tube 1 into the fixing frame 10 and fixedly install it on the fixing frame 10; select the number of connecting outer tubes 3 according to the actual project requirements, connect the adjacent starting outer tube 1 and connecting outer tube 3, and the adjacent two connecting outer tubes 3 in series in sequence, connect the adjacent driving inner tube 2 and driven inner tube 4, and the adjacent two driven inner tubes 4 in series in sequence, and fix the adjacent starting outer tube 1 and connecting outer tube 3, and the adjacent two connecting outer tubes 3 together through the connecting sleeve 9;

[0062] Second step, insert the limiting rod 8 into both limiting holes 604 of the traction block 6, rotate the traction block 6 and place it into the starting section of the driving inner tube 2, so that both pin shafts 601 enter the first spiral groove 201; on the starting section of the starting outer tube 1 and the end section of the last connecting outer tube 3, fixedly install two limiting support frames 7 through fastening bolts, and the front and rear mounting frames 501 correspond to each other; penetrate and install the limiting rod 8 through the mounting holes 701 of the front and rear limiting support frames 7;

[0063] Third step, inlay and install the upper rotating frame 507 and the lower rotating frame 511 on the corresponding rotating shafts 1022, and the upper guide wheel 508 and the lower guide wheel 512 are in contact under the reset action of the spring connecting body 102; install the mounting frame 501 on the starting outer tube 1, and adjust the gear 503 to mesh with the first rack 5051, the upper rotating gear 506 meshes with the front end of the first rack 5051, the lower rotating gear 510 meshes with the front end of the second rack 509, and the driving gear 514 meshes with the driven gear ring 515;

[0064] In the fourth step, the staff connects the drive motor 502 to the power supply control terminal carried by themselves through the wiring terminal; starts the drive motor 502, and the adjusting gear 503 drives the first rack 5051 to move forward, and the moving frame 504 moves forward accordingly. The first rack 5051 drives the upper rotating gear 506 to rotate, and the second rack 509 drives the lower rotating gear 510 to rotate. The upper rotating frame 507 and the lower rotating frame 511 both rotate to the vertical state, and the upper guide wheel 508 and the lower guide wheel 512 move away from each other (during this process, the adjusting gear 503 will also drive the drive gear 514 to rotate through the input bevel gear 5131 and the output bevel gear 5132, and the drive gear 514 drives the driven gear ring 515 to rotate, thereby driving the active inner tube 2 to rotate, and the traction block 6 will move forward a short distance in the active inner tube 2, and this movement will not affect the installation of the overhead cable); then install the end of the overhead cable into the traction block 6 and fix it by the extrusion block 602 (the ends of the multi-bundle overhead cable can also be fixed between the extrusion blocks 602 at one time after being bundled into a bunch by tape).

[0065] Then the drive motor 502 drives the adjusting gear 503 to rotate in the reverse direction, the upper rotating frame 507 and the lower rotating frame 511 approach each other, and the upper guide wheel 508 and the lower guide wheel 512 clamp the overhead cable; during the process of the adjusting gear 503 rotating in the reverse direction, the upper rotating gear 506 gradually disengages from the first rack 5051 and stops rotating after passing over the sliding tooth 5052. The lower rotating gear 510 gradually disengages from the second rack 509 and stops rotating. The drive gear 514 rotates in the reverse direction to drive the driven gear ring 515 to rotate, the active inner tube 2 and the driven inner tube 4 rotate, and the traction block 6 moves backward along the limiting rod 8.

[0066] In the fifth step, the drive motor 502 continues to drive the adjusting gear 503 to rotate. The adjusting gear 503 gradually disengages from the first rack 5051 and meshes with the sliding tooth 5052. The sliding tooth 5052 will continuously mesh with the adjusting gear 503 under the elastic return of the compression spring rod 5053; and the continuous rotation of the adjusting gear 503 will drive the active inner tube 2 to rotate continuously through the bevel gear set 513, the drive gear 514 and the driven gear ring 515. The driven inner tube 4 and the active inner tube 2 rotate synchronously. The pin shaft 601 slides along the first spiral groove 201 and successively enters the rear spiral groove 401. The traction block 6 drives the overhead cable to pass through the active inner tube 2 and successively enter the rear driven inner tube 4 until it moves to the end section of the last driven inner tube 4; then turn off the drive motor 502, the adjusting gear 503 stops rotating, and the traction block 6 stops moving.

[0067] Step 6: First, remove the limit support frame 7 on the end section of the last outer tube 3, then remove the traction block 6 to separate the overhead cable from the traction block 6 and disconnect the connection between the terminal and the power supply control terminal. Subsequently, remove the mounting bracket 501, the upper rotating bracket 507, and the lower rotating bracket 511 in sequence. Finally, remove the limit support frame 7 on the starting section of the starting outer tube 1 and extract the two limit rods 8;

[0068] The above steps complete the installation of the power pipe and the overhead cable.

Claims

1. An HPVC power pipe that is convenient for installing overhead cables, characterized in that: The invention comprises a starting outer tube (1) and a connecting outer tube (3) which can be connected to each other, an active inner tube (2) and a driven inner tube (4) which can be connected to each other, a driving mechanism (5), a limit support frame (7) which is detachably mounted on the starting outer tube (1) or the connecting outer tube (3), a limit rod (8) which is detachably mounted on the limit support frame (7), and a traction block (6) which can be slidably mounted on the limit rod (8); the two connecting outer tubes (3) can be connected to each other; and the two driven inner tubes (4) can be connected to each other. The starting outer tube (1) has an active inner tube (2) coaxially rotatably mounted therein; the connecting outer tube (3) has a driven inner tube (4) coaxially rotatably mounted therein; the active inner tube (2) and the driven inner tube (4) are both provided with spiral grooves on their inner walls; the traction block (6) is fixedly provided with a pin (601) that can be slidably mounted in the spiral grooves; The driving mechanism (5) comprises a mounting frame (501) detachably mounted on the starting outer tube (1), a driving motor (502) fixedly mounted on the mounting frame (501), a driving gear (514) rotatably mounted on the mounting frame (501), and a driven gear ring (515) coaxially fixedly mounted on the driving inner tube (2) and meshing with the driving gear (514); The driving mechanism (5) further comprises an upper rotating gear (506) fixedly mounted on an upper rotating frame (507), a lower rotating gear (510) fixedly mounted on a lower rotating frame (511), an adjusting gear (503) coaxially fixedly mounted on an output end of a driving motor (502), a moving frame (504) slidably mounted on a mounting frame (501), and a sliding plate (505) and a second rack (509) fixedly mounted on the moving frame (504); the second rack (5 09) intermittently meshes with the lower rotating gear (510); a rack one (5051) is fixedly mounted on the sliding plate (505), and a sliding tooth (5052) is slidably mounted; the rack one (5051) and the sliding tooth (5052) are elastically connected; the adjusting gear (503) intermittently meshes with the rack one (5051) or the sliding tooth (5052); the upper rotating gear (506) intermittently meshes with the rack one (5051) or the sliding tooth (5052).

2. According to claim 1, a HPVC power pipe that is convenient for installing overhead cables is characterized in that: The starting outer tube (1) is provided with a coil spring connector (102); the coil spring connector (102) comprises a connecting shaft (1021) fixedly mounted on the starting outer tube (1), and a rotating shaft (1022) rotatably mounted inside the connecting shaft (1021), and a coil spring is provided between the rotating shaft (1022) and the connecting shaft (1021); the driving mechanism (5) further comprises an upper rotating frame (507) and a lower rotating frame (511) which can be detachably mounted on the rotating shaft (1022), an upper guide wheel (508) rotatably mounted on the upper rotating frame (507), and a lower guide wheel (512) rotatably mounted on the lower rotating frame (511).

3. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: The adjusting gear (503) is synchronously connected to the driving gear (514).

4. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: A plurality of extrusion blocks (602) are elastically mounted inside the traction block (6).

5. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: The starting outer tube (1) and the connecting outer tube (3), and the two connecting outer tubes (3) are fixedly mounted together via a connecting sleeve (9).

6. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: The starting outer tube (1) is fixedly mounted at the installation position via a fixing frame (10).

7. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: The starting outer tube (1) and the connecting outer tube (3), and the two connecting outer tubes (3) are connected via pins.

8. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: The active inner tube (2) and the driven inner tube (4), and the two driven inner tubes (4) are connected via pins.

9. The HPVC power pipe for facilitating installation of overhead cables according to claim 1, characterized in that: The limiting rod (8) is installed on the limiting support frame (7) in an interlaced manner.

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