Cable conduit traction device

Abstract

A cable conduit traction device relates to a cable traction device, and is characterized in that a through hole is formed in the middle of the end face of one end of a sleeve, a middle hole of a rubber block arranged at one end in a sleeve cavity corresponds to the through hole of the sleeve, a segmentation ring is tightly attached to the rubber block, a bearing is tightly attached to the segmentation ring, and an expanding ring at one end of a traction rod abuts against an inner ring of the bearing; the other end of the traction rod sequentially penetrates through a bearing inner ring, a plate hole in the middle of the partition ring, a middle hole of the rubber block and a penetrating hole of the sleeve and then is connected with the traction mechanism. The lock pipe is firstly sleeved on the close end part of the cable, then at least one fixing ring is respectively sleeved on the end part of the cable, the fixing ring and the end part of the cable are fixed by using the locking screw, the end part of the cable sleeved with the fixing ring penetrates through the pipe hole of the sleeve, and one end of the lock pipe is connected with the inner wall of the sleeve; according to the invention, the end part of the cable is locked by the plurality of fixing rings, the locked cable is located in the sleeve and the lock pipe, and when the steel wire rope is pulled in the pipeline, the bearing can adapt to automatic rotation release of the twisted cable.

Description

Technical Field

[0001] This invention relates to a cable traction device, and more specifically, to a cable duct traction device. Background Technology

[0002] As is well known, in order to protect buried cables, it is usually necessary to dig cable trenches, and then lay multiple steel pipes, rigid plastic pipes, or ceramic pipes in the cable trenches as conduits for cable pulling. The diameter of the conduits needs to be no less than 1.5 times or more the outer diameter of the cable; and the slope of the conduits should be ≥0.1% to ensure smooth drainage. Cable wells are set every 50-100m on straight sections, and inspection wells are added at bends. Since the length of the pipeline laid is mostly longer than the length of the pipeline itself, joints in the middle are inevitable. Commonly used wire mesh cable pullers will wear down the pipeline at the joints, and the cable will also be twisted when it is unloaded from the cable reel, which will increase the difficulty and obstruction of pulling. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing methods by disclosing a cable duct traction device. The device consists of multiple fixing rings that lock the cable end. The locked cable is located inside a sleeve and a locking tube. When the cable is pulled inside the duct by a steel wire rope, the bearing can automatically rotate and release the cable to accommodate any twisting.

[0004] In order to achieve the objective of this invention, this application discloses the following technical solution: A cable duct traction device includes a sleeve, a rubber block, a dividing ring, a bearing, a traction rod, a fixing ring, a locking screw, and a locking tube. A through hole is provided in the middle of one end face of the sleeve. A hole in the middle of one end of the rubber block, located inside the sleeve cavity, corresponds to the through hole of the sleeve. The dividing ring is tightly attached to the rubber block, and the bearing is tightly attached to the dividing ring. An expanded-diameter ring at one end of the traction rod rests on the inner ring of the bearing. The other end of the traction rod passes sequentially through the inner ring of the bearing, the plate hole in the middle of the dividing ring, the middle hole of the rubber block, and the through hole of the sleeve before connecting to the traction mechanism. The locking tube is first fitted onto the near end of the cable, and then at least one fixing ring is fitted onto each end of the cable. The fixing ring is fixed to the cable end using the locking screw. The cable end with the fixing ring is passed through the hole of the sleeve, and one end of the locking tube is connected to the inner wall of the sleeve.

[0005] The cable duct traction device has a traction hole near the end of the other end of the traction rod. One end of the wire rope passes through the traction hole of the traction rod and is locked by the wire rope lock. The traction mechanism is formed by the wire rope lock and the wire rope.

[0006] The cable duct traction device has a thin rod near the end of the traction rod, and a traction hole is located in the middle of the thin rod.

[0007] The cable duct traction device has a tapered surface between the traction rod and the thin rod, and a small tapered surface at the end of the thin rod.

[0008] The cable duct traction device has a sleeve with one end configured as an arc head structure, a perforation located in the middle of the arc head, and the rubber block with an arc end face near the arc head of the sleeve.

[0009] The cable duct traction device has an internal thread on the inner surface of the other end of the sleeve and an external thread on the outer edge of one end of the locking tube. The internal thread of the sleeve is connected to the external thread of the locking tube.

[0010] The cable duct pulling device has a screwing plane A on the outer edge of the other end of the sleeve, and a screwing plane B on the outer edge of the locking tube.

[0011] The cable duct traction device has an upper plate near the rubber block of the dividing ring, and the plate hole is located in the middle of the upper plate.

[0012] The cable duct pulling device has multiple screw holes evenly arranged around the center of the fixing ring. The tip of the locking screw passes through the screw hole and then pierces the outer surface of the cable. The thread on the outside of the locking screw is connected to the screw hole of the fixing ring.

[0013] The cable duct traction device has an outer conical surface at both ends of the outer edge of the fixed ring, and an inner conical surface at both ends of the inner surface of the fixed ring.

[0014] Based on the above disclosure, the beneficial effects of the present invention are: The cable duct traction device of the present invention securely fixes multiple fixing rings to the cable end with locking screws, and locks the cable end inside the sleeve cavity with a locking tube. The traction rod obtains the cable rotation by automatically releasing the twisting force when the wire rope is pulled through the cooperation of bearings and dividing rings. The flexibility of the rubber block supports the sleeve end to prevent deformation. The present invention ensures smooth cable traction in the duct and does not wear the duct. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional assembly structure of the present invention; Figure 3 This is a schematic diagram of the usage state of the present invention; In the diagram: 1. Insulating sleeve; 2. Semicircular groove; 3. Torque nut plate; 4. Upper plate; 5. Spring; 6. Middle connecting rod; 7. Middle plate; 8. Locking nut; 9. Lower plate; 10. Expanding rod; 11. Arc-starting rod A; 12. Arc-starting rod B; 13. Thickened rod; 14. Insulating rod; 15. Insulating skirt; 16. Upper expansion; 17. Arc-starting ball; 18. Metal rod; 19. Lower expansion; 20. Steel foot screw; 21. Screw; 22. Expansion ring; 23. Upper expansion; 24. Insulating sleeve; 25. Fixing nut; 26. Clamping plate; 27. Smooth hole; 28. Semicircular recess; 29. ​​External threaded rod; 30. Screw hole; 31. Upper hole; 32. Middle hole; 33. Lower hole; 34. Connecting rod; 35. Through hole A; 36. Through hole B. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the inventive objectives, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of possible implementations of the technical solutions of the present invention.

[0017] Combined with appendix Figures 1 to 3The cable duct traction device described herein includes a sleeve 4, a rubber block 8, a dividing ring 11, a bearing 12, a traction rod 17, a fixing ring 19, a locking screw 20, and a locking tube 26. One end of the sleeve 4 is configured as an arc head 1, with a through hole 2 located in the middle of the arc head 1. The middle hole 7 of the rubber block 8 located inside the cavity 3 of the sleeve 4 corresponds to the through hole 2 of the sleeve 4. The part of the rubber block 8 close to the arc head 1 of the sleeve 4 is configured as an arc end face 6. The dividing ring 1... 1. A top plate 9 is provided close to the rubber block 8 on the dividing ring 11. A plate hole 10 is located in the middle of the top plate 9. The bearing 12 is close to the dividing ring 11. The expansion ring 18 at one end of the traction rod 17 rests on the inner ring of the bearing 12. The other end of the traction rod 17 passes through the inner ring of the bearing 12, the plate hole 10 in the middle of the dividing ring 11, the middle hole 7 of the rubber block 8, and the through hole 2 of the sleeve 4 in sequence, and then connects to the traction mechanism. That is, the other end of the traction rod 17. A thin rod 15 is provided near the end, and a traction hole 14 is located in the middle of the thin rod 15. A tapered surface 16 is provided between the traction rod 17 and the thin rod 15, and a small tapered surface 13 is provided at the end of the thin rod 15. One end of the wire rope 30 passes through the traction hole 14 of the traction rod 17 and is locked by the wire rope buckle 29. The wire rope buckle 29 and the wire rope 30 form the traction mechanism. The locking tube 26 is first sleeved near the end of the cable 31, and then at least one fixing tube is sleeved on the end of the cable 31. The fixing ring 19 is fixed to the end of the cable 31 using the locking screw 20. The end of the cable 31 with the fixing ring 19 is passed through the tube hole 24 of the sleeve 4. The inner surface of the other end of the sleeve 4 is provided with an internal thread 5. The outer edge of one end of the locking tube 26 is provided with an external thread 25. The internal thread 5 of the sleeve 4 is connected with the external thread 25 of the locking tube 26. The outer edge of the other end of the sleeve 4 is provided with a screwing plane A27, and the outer edge of the locking tube 26 is provided with a screwing plane B28.

[0018] Furthermore, multiple screw holes 21 are evenly arranged around the center of the fixing ring 19. The tip of the inner end of the locking screw 20 passes through the screw hole 21 and then inserts into the outer surface of the cable 31. The thread of the locking screw 20 is connected to the screw hole 21 of the fixing ring 19. An outer conical surface 22 is provided at both ends of the outer edge surface of the fixing ring 19, and an inner conical surface 23 is provided at both ends of the inner surface of the fixing ring 19.

[0019] Implement the cable duct traction device described in this invention, combined with the attached... Figures 1 to 3The method of using this invention is as follows: The inner hole of the bearing 12's inner ring is fitted onto the traction rod 17. Then, the plate hole 10 of the upper plate 9 of the dividing ring 11 and the middle hole 7 of the rubber block 8 are respectively fitted onto the traction rod 17. After inserting the traction rod 17 into the cavity 3 of the sleeve 4, the other end of the traction rod 17 passes through the through hole 2 of the sleeve 4 and is tightened. Next, the locking tube 26 is fitted onto the end of the cable 31. Then, multiple fixing rings 19 are respectively fitted onto the cable 31. The fixing rings 19 are fixed onto the cable 31 using locking screws 20. Two wrenches are used to respectively clamp the screwing plane A27 of the sleeve 4 and the screwing plane B28 of the locking tube 26 to fix the sleeve 4 and the locking tube 26. The steel wire rope 30 led out from the cable conduit passes through the traction hole 14 of the traction rod 17 and is locked by the steel wire rope buckle 29. Then, the equipment can be used to drive the steel wire rope 30 to make the cable 31 enter the cable conduit and pass through.

[0020] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the scope of protection of the present invention. These equivalent forms also fall within the scope defined by the appended claims.

[0021] The parts of this invention not described in detail are prior art.

Claims

1. A cable duct pulling device comprising a sleeve (4), a rubber block (8), a split ring (11), a bearing (12), a pulling rod (17), a fixing ring (19), a locking screw (20) and a locking tube (26), characterized in that: The middle part of the end face of the sleeve (4) is provided with a through hole (2), the middle hole (7) of the rubber block (8) arranged in the lumen (3) of the sleeve (4) corresponds to the through hole (2) of the sleeve (4), the split ring (11) is tightly attached to the rubber block (8), the bearing (12) is tightly attached to the split ring (11), the enlarged diameter ring (18) at one end of the traction rod (17) is placed on the inner ring of the bearing (12), the other end of the traction rod (17) passes through the inner ring of the bearing (12), the plate hole (10) in the middle of the split ring (11), the middle hole (7) of the rubber block (8) and the through hole (2) of the sleeve (4) in turn, and is connected with the traction mechanism; the locking sleeve (26) is first sleeved on the cable (31) near the end, then at least one fixing ring (19) is sleeved on the end of the cable (31), the fixing ring (19) and the end of the cable (31) are fixed by the locking screw (20), the end of the cable (31) sleeved with the fixing ring (19) passes through the tube hole (24) of the sleeve (4), and the end of the locking sleeve (26) is connected with the inner wall of the sleeve (4).

2. A cable duct pulling device according to claim 1, characterised in that: The other end of the traction rod (17) is provided with a traction hole (14) near the end, one end of the steel wire rope (30) passes through the traction hole (14) of the traction rod (17) and is locked by the steel wire rope lock buckle (29), and the traction mechanism is formed by the steel wire rope lock buckle (29) and the steel wire rope (30).

3. The cable duct pulling device of claim 1, wherein: The other end of the traction rod (17) is provided with a thin rod (15) near the end, and the traction hole (14) is arranged in the middle of the thin rod (15).

4. A cable duct pulling device according to claim 1 or 3, characterised in that: A tapered surface (16) is arranged between the traction rod (17) and the thin rod (15), and a small tapered surface (13) is arranged at the end of the thin rod (15).

5. The cable duct pulling device of claim 1, wherein: One end of the sleeve (4) is provided with a circular arc head (1) structure, and the through hole (2) is arranged in the middle of the circular arc head (1). The rubber block (8) is provided with a circular arc end face (6) near the circular arc head (1) of the sleeve (4).

6. The cable duct pulling device of claim 1, wherein: The inner surface of the other end of the sleeve (4) is provided with an internal thread (5), the outer edge surface of one end of the locking sleeve (26) is provided with an external thread (25), and the internal thread (5) of the sleeve (4) is connected with the external thread (25) of the locking sleeve (26).

7. A cable duct pulling device according to claim 1 or 6, characterised in that: A screwing plane A (27) is arranged on the outer edge surface of the other end of the sleeve (4), and a screwing plane B (28) is arranged on the outer edge surface of the locking sleeve (26).

8. The cable duct pulling device of claim 1, wherein: The split ring (11) is provided with an upper plate (9) near the rubber block (8), and the plate hole (10) is arranged in the middle of the upper plate (9).

9. The cable duct pulling device of claim 1, wherein: A plurality of screw holes (21) are uniformly arranged in the middle of the fixing ring (19), the sharp end of the locking screw (20) passes through the screw hole (21) and pierces into the outer surface of the cable (31), and the external thread of the locking screw (20) is connected with the screw hole (21) of the fixing ring (19).

10. A cable duct pulling device according to claim 1 or 9, characterized in that: The outer edge surface of the fixing ring (19) is provided with an outer tapered surface (22) at both ends, and the inner edge surface of the fixing ring (19) is provided with an inner tapered surface (23) at both ends.

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