Universal pipeline traction device

Abstract

The utility model relates to the technical field of pipeline installation and discloses a universal pipeline traction device which comprises a connecting plate, a rotating shaft is rotatably connected to the rear portion of the connecting plate, a connecting shaft is rotatably connected to one end of the rotating shaft, and a pair of limiting blocks are symmetrically and fixedly connected to the positions, close to the front portion and the rear portion, of the outer surface of the connecting shaft. First threaded grooves are formed in the positions, between the two pairs of limiting blocks, of the outer surface of the connecting shaft, the outer surface of the connecting shaft is in threaded connection with moving rings through the two first threaded grooves, three auger rods are symmetrically arranged on the outer surface of the connecting shaft at equal intervals, moving blocks are rotationally connected to the front portions and the rear portions of the auger rods, and fixing blocks are fixedly connected to the outer surfaces of the moving blocks. And three fixing blocks are symmetrically and fixedly connected to the outer surface of the moving ring at equal intervals, the first threaded groove is formed to be matched with the moving ring, the auger rod and the inner wall of a pipeline with the large pipe diameter are tightly extruded, and therefore the device can adapt to pipelines with different pipe diameters, and the universality of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline installation technology, specifically a general-purpose pipeline traction device. Background Technology

[0002] In the field of pipeline installation technology, cable pulling devices for line renovation are an indispensable tool. When carrying out line renovation, it is necessary to replace or re-lay cables. At this time, cable pulling devices are needed to pull the cables and accurately install them in the pipeline, thereby ensuring the smooth implementation of the power line part of the entire pipeline installation project, improving construction efficiency and quality. The two are closely related, mutually reinforcing, and jointly promoting the development and improvement of the pipeline installation field.

[0003] Chinese patent CN212550123U discloses a cable conduit puller, including a guide portion that is conical in shape; and a connecting portion for connecting to a traction head, wherein the connecting portion is connected to the large end of the guide portion and the small end of the guide portion is disposed away from the connecting portion.

[0004] The guide part in the aforementioned patent can guide the traction head, allowing it to pass smoothly through the connection between two pipes and ensuring the smooth progress of cable laying. However, it lacks the adaptability adjustment function for pipes of different diameters. In actual line modification and cable laying scenarios, the pipe diameters are often different, and relying solely on the guide part and connection part with a fixed shape may not be able to adapt well to changes in pipe diameter. Utility Model Content

[0005] The purpose of this utility model is to provide a universal pipeline traction device. By setting a threaded groove and a matching moving ring, the auger rod is tightly squeezed against the inner wall of a pipe with a large diameter, thereby adapting to pipes of different diameters and improving the versatility of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a general-purpose pipeline traction device, including a connecting plate, a rotating shaft rotatably connected to the rear of the connecting plate, a connecting shaft rotatably connected to one end of the rotating shaft, a pair of limiting blocks symmetrically fixedly connected to the outer surface of the connecting shaft near the front and rear, a threaded groove is provided on the outer surface of the connecting shaft between the two pairs of limiting blocks, a movable ring is threadedly connected to the outer surface of the connecting shaft through the two threaded grooves, three auger rods are symmetrically and equidistantly arranged on the outer surface of the connecting shaft, a movable block is rotatably connected to the front and rear of the auger rods, a fixed block is fixedly connected to the outer surface of the movable block, and three fixed blocks are also symmetrically and equidistantly fixedly connected to the outer surface of the movable ring, and four connecting rods are rotatably connected between the fixed block on the surface of the movable block and the fixed block on the outer surface of the movable ring.

[0007] Preferably, a motor is fixedly connected to the front of the connecting plate, and a connecting block is rotatably connected to the front of each of the three moving blocks at the front, with a motor fixedly connected to the front of each connecting block.

[0008] Preferably, the output shaft of motor one passes through one end of the rotating shaft and is fixedly connected to the front of the connecting shaft, and the output shaft of motor two passes through the rear of the connecting block and is fixedly connected to one end of the auger rod.

[0009] Preferably, the rear of the three movable blocks at the rear is also rotatably connected to a connecting block, and the outer surface of the rotating shaft and the rear of the connecting shaft are both connected to a rotating block. Three fixed rods are symmetrically and equidistantly fixed to the outer surface of the rotating block. A sliding rod is slidably connected to one end of the fixed rod, and the sliding rod is fixedly connected to the connecting block at the rear.

[0010] Preferably, a fixing cover is fixedly connected to the rear of the rotating block at the rear, and the outer surface of the fixing cover has a threaded groove II, and a shrink ring is provided at the front of the outer surface of the fixing cover.

[0011] Preferably, the front diameter of the fixing cover is smaller than the rear diameter, and the shrink ring is threadedly connected to the fixing cover through the second threaded groove.

[0012] Preferably, the threaded blades on the outer surface of the auger rod are made of rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) In the pipeline, the three auger rods are pressed against the inner wall of the pipeline and rotate synchronously, which can drive the traction device forward. This method can effectively pull the cable. In actual line renovation projects, the cable can be stably pulled to the designated position, ensuring the smooth progress of the line renovation work.

[0015] 2) By setting a threaded groove and a matching moving ring, the position of the auger rods can be adjusted by rotating the connecting shaft. When the traction device needs to be placed into a pipe with a smaller diameter, the connecting shaft is rotated counterclockwise to move the two moving rings away from each other. The three auger rods retract along the center of the connecting shaft, allowing the smaller diameter pipe to be easily inserted. Conversely, when working in a pipe with a larger diameter, the connecting shaft is rotated clockwise to move the two moving rings closer together. This causes the three auger rods to expand outward along the center of the connecting shaft, making the auger rods tightly squeeze against the inner wall of the larger diameter pipe. This allows the device to adapt to pipes of different diameters and improves its versatility.

[0016] 3) The sliding rod and fixed rod restrict the device to maintain structural stability in pipeline environments with varying pipe diameters. During the contraction or expansion of the auger rod, the sliding rod and fixed rod prevent the device from becoming unbalanced or structurally damaged due to the auger rod rotating arbitrarily. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a general-purpose pipeline traction device according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure after the fixing rod and fixing cover are removed in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure after the fixing cover is removed in an embodiment of this utility model;

[0020] Figure 4 This is an exploded view of the fixing cover and shrink ring structure in an embodiment of this utility model.

[0021] In the diagram: 1. Connecting plate; 2. Coupling shaft; 3. Connecting block; 4. Limiting block; 5. Threaded groove one; 6. Moving ring; 7. Screw rod; 8. Moving block; 9. Fixed block; 10. Connecting rod; 11. Rotating shaft; 12. Motor one; 13. Motor two; 14. Rotating block; 15. Fixed rod; 16. Sliding rod; 17. Contraction ring; 18. Fixed cover; 19. Threaded groove two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Combination Figure 1 - Figure 4 A general-purpose pipeline traction device includes a connecting plate 1, a rotating shaft 11 rotatably connected to the rear of the connecting plate 1, a connecting shaft 2 rotatably connected to one end of the rotating shaft 11, a pair of limiting blocks 4 symmetrically fixedly connected to the outer surface of the connecting shaft 2 near the front and rear, threaded grooves 5 are provided on the outer surface of the connecting shaft 2 between the two pairs of limiting blocks 4, and movable rings 6 are threadedly connected to the outer surface of the connecting shaft 2 through the two threaded grooves 5, three auger rods 7 are symmetrically and equidistantly arranged on the outer surface of the connecting shaft 2, movable blocks 8 are rotatably connected to the front and rear of the auger rods 7, fixed blocks 9 are fixedly connected to the outer surface of the movable blocks 8, and three fixed blocks 9 are also symmetrically and equidistantly fixedly connected to the outer surface of the movable rings 6, and four connecting rods 10 are rotatably connected between the fixed blocks 9 on the surface of the movable blocks 8 and the fixed blocks 9 on the outer surface of the movable rings 6.

[0025] In actual operation, the traction device is placed in the pipeline that needs to be modified. The three auger rods 7 are pressed against the inner wall of the pipeline. The three auger rods 7 rotate synchronously, which drives the traction device forward, thereby achieving the purpose of pulling the cable. When the connecting shaft 2 is rotated, since the two threaded grooves 5 are symmetrical, the two moving rings 6 are driven to move away from each other through the two threaded grooves 5 while the shaft 11 is rotating. Through all the connecting rods 10, the three auger rods 7 can be driven to retract along the center of the connecting shaft 2, thereby allowing the traction device to be placed in a pipeline with a smaller diameter.

[0026] Specifically, rotating the connecting shaft 2 clockwise causes the two moving rings 6 to move closer to each other through the two threaded grooves 5, which in turn causes the three auger rods 7 to expand outward along the center of the connecting shaft 2. Rotating the connecting shaft 2 counterclockwise causes the two moving rings 6 to move further away from each other through the two threaded grooves 5, which in turn causes the three auger rods 7 to contract outward along the center of the connecting shaft 2.

[0027] It should be noted that during the movement of the two moving rings 6, the moving rings 6 themselves will rotate along the threaded groove, and then through the connecting rod 10, the three auger rods 7 will also rotate along the center of the connecting shaft 2 to contract or expand.

[0028] See Figure 2 A motor 12 is fixedly connected to the front of the connecting plate 1. The front of the three moving blocks 8 at the front is rotatably connected to the connecting block 3. A motor 2 13 is fixedly connected to the front of each connecting block 3.

[0029] Specifically, starting motor 12 drives the coupling 2 to rotate. By changing the rotation direction of the output shaft of motor 12, the rotation direction of coupling 2 is changed, and the three motors 13 are started simultaneously, driving the three auger rods 7 to rotate synchronously and in the same direction.

[0030] See Figure 2 The output shaft of motor 12 passes through one end of the rotating shaft 11 and is fixedly connected to the front of the connecting shaft 2. The output shaft of motor 213 passes through the rear of the connecting block 3 and is fixedly connected to one end of the auger rod 7.

[0031] See Figure 3 The rear of the three moving blocks 8 at the rear is also rotatably connected to the connecting block 3. The outer surface of the rotating shaft 11 and the rear of the connecting shaft 2 are both connected to the rotating block 14. The outer surface of the rotating block 14 is symmetrically and equidistantly fixedly connected to three fixed rods 15. The inside of the fixed rod 15 is slidably connected to one end of the sliding rod 16. The sliding rod 16 is fixedly connected to the connecting block 3 at the rear.

[0032] Specifically, since the slide rod 16 is slidably connected to the fixed rod 15, and the rear rotating block 14 is fixedly connected to the rotating shaft 11, which in turn is fixedly connected to the connecting plate 1, during the retraction or expansion of the auger rod 7, the slide rod 16 will slide along the fixed rod 15 through the two connecting blocks 3. This prevents the auger rod 7 from rotating along the center of the connecting shaft 2 during the retraction or expansion process due to the restriction of the slide rod 16 and the fixed rod 15, allowing it to only retract or expand.

[0033] See Figure 4 The rear of the rotating block 14 is fixedly connected to a fixed cover 18. The outer surface of the fixed cover 18 is provided with a threaded groove 19, and a shrink ring 17 is provided on the front part of the outer surface of the fixed cover 18.

[0034] Specifically, one end of the cable to be pulled is inserted into the inside of the fixing cover 18, and then the shrink ring 17 is rotated along the threaded groove 19, so that the rear part of the fixing cover 18 gradually shrinks, thereby clamping the cable and connecting it to the pulling device.

[0035] See Figure 4 The front diameter of the fixed cover 18 is smaller than the rear diameter, and the shrink ring 17 is threadedly connected to the fixed cover 18 through the threaded groove 19.

[0036] See Figure 2 The outer surface of the screw rod 7 is made of rubber.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A universal pipeline pulling device comprising a connecting plate (1), characterized in that: The rear part of the connecting plate (1) is rotatably connected with a rotating shaft (11), one end of the rotating shaft (11) is rotatably connected with a connecting shaft (2), the outer surface of the connecting shaft (2) is fixedly connected with a pair of limiting blocks (4) in a front-rear symmetrical manner, the outer surface of the connecting shaft (2) is provided with a threaded groove one (5) between the two pairs of limiting blocks (4), the outer surface of the connecting shaft (2) is threadedly connected with a moving ring (6) through the two threaded grooves one (5), the outer surface of the connecting shaft (2) is provided with three auger rods (7) arranged in a symmetrical and equidistant manner, the front-rear parts of the auger rods (7) are rotatably connected with moving blocks (8), the outer surface of the moving blocks (8) is fixedly connected with fixed blocks (9), and the outer surface of the moving ring (6) is also fixedly connected with three fixed blocks (9) in a symmetrical and equidistant manner, and four connecting rods (10) are rotatably connected between the fixed blocks (9) on the surface of the moving blocks (8) and the fixed blocks (9) on the outer surface of the moving ring (6).

2. A universal pipeline pulling device as claimed in claim 1, wherein: The front part of the connecting plate (1) is fixedly connected with a motor one (12), the front part of each of the three moving blocks (8) close to the front part is rotatably connected with a connecting block (3), and the front part of each connecting block (3) is fixedly connected with a motor two (13).

3. A universal pipeline pulling device as defined in claim 2, wherein: The output shaft of the motor one (12) penetrates one end of the rotating shaft (11) and is fixedly connected with the front part of the connecting shaft (2), and the output shaft of the motor two (13) penetrates the rear part of the connecting block (3) and is fixedly connected with one end of the auger rod (7).

4. A universal pipeline pulling device as defined in claim 2, wherein: The rear part of each of the three moving blocks (8) close to the rear part is also rotatably connected with a connecting block (3), the outer surface of the rotating shaft (11) and the rear part of the connecting shaft (2) are both connected with a rotating block (14), the outer surface of the rotating block (14) is fixedly connected with three fixed rods (15) in a symmetrical and equidistant manner, one end of the fixed rod (15) is slidably connected with a slide rod (16) penetrating the inside of the fixed rod (15), and the slide rod (16) is fixedly connected with the connecting block (3) close to the rear part.

5. A universal pipeline pulling device as claimed in claim 4, wherein: The rear part of the rotating block (14) close to the rear part is fixedly connected with a fixed cover (18), the outer surface of the fixed cover (18) is provided with a threaded groove two (19), and the outer surface of the fixed cover (18) is provided with a contraction ring (17) close to the front part.

6. A universal pipeline pulling device as claimed in claim 5, wherein: The front end diameter of the fixed cover (18) is smaller than the rear end diameter, and the contraction ring (17) is threadedly connected with the fixed cover (18) through the threaded groove two (19).

7. A universal pipeline pulling device as defined in claim 1, wherein: The threaded blade on the outer surface of the auger rod (7) is composed of rubber material.

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