An adjustable telescopic pulley for cable laying in tunnels
By using adjustable telescopic pulleys at different bends in the tunnel, the problem of difficulty in protection during cable replacement is solved, the safety and construction efficiency of the cable are improved, and a lot of labor is saved.
Patent Information
- Application Number
- CN202010679097.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the replacement of cables in the tunnel, due to the narrow space and complex curves, the existing technology is difficult to effectively protect cables, resulting in increased construction difficulties, which may cause cable damage and safety hazards.
Three adjustable telescopic pulleys are designed, namely triangular ladder type, groove type and ladder type, which can be placed vertically or horizontally at different tunnel bends. Through the combination of roller sets and limit wheels, the cables are fixed and protected to ensure that the cables are in Integrity and security in complex situations.
Effectively protect the cables, ensure their integrity and function during replacement, adapt to complex situations in the tunnel, greatly improve construction efficiency, and save more than 80% of labor.
Smart Images
Figure CN111864637B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an adjustable telescopic pulley for cable laying construction in a tunnel, belonging to the technical field of cable laying. Background Art
[0002] In recent years, with the aging of cables and the need for renewal, a large number of cable renewal and replacement projects will appear in various cities. Due to the narrow tunnels and narrow working surfaces, it is not possible to replace all the old cables at once when replacing the cables. Instead, the old cables must be replaced in batches, which increases the difficulty of construction. In addition, personnel often touch and damage power cables during construction, causing losses to power supply reliability and personal and property safety. For this reason, in the absence of similar standardized operating procedures and construction processes, a wire laying bracket is used to facilitate the construction personnel's work and facilitate the smooth completion of cable laying. Summary of the invention
[0003] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides an adjustable telescopic pulley for cable laying construction in tunnels. The present invention can fully protect the replaced cables from being damaged, ensure the integrity and use function of the cables; can adapt to all complex situations in the tunnel, ensure smooth cable replacement construction; greatly improve work efficiency, and save more than 80% of labor.
[0004] The technical solution adopted by the present invention to solve its technical problems is: an adjustable telescopic pulley for cable laying construction in a tunnel, which is divided into three types, the first type is a triangular ladder-type adjustable telescopic pulley, the second type is a groove-type adjustable telescopic pulley, and the third type is a ladder-type adjustable telescopic pulley; a triangular ladder-type adjustable telescopic pulley is provided at the V-shaped bend of the tunnel, a groove-type adjustable telescopic pulley is provided at the right-angle bend of the tunnel, and a ladder-type adjustable telescopic pulley is provided at the S-shaped bend of the tunnel.
[0005] The triangular ladder-shaped adjustable telescopic pulley comprises a first column angle steel, a first crossbeam angle steel, a first roller, a first limiting wheel, a first lead screw and a first fixed block; the two first column angle steels are fixedly connected at the top, middle and bottom by the first crossbeam angle steel respectively, the first column angle steel is fixedly connected with the first fixed block at both ends, the first fixed block is provided with a threaded hole, the first fixed block is threadedly connected with the first lead screw, a hexagonal prism is provided in the middle of the first lead screw, the first column angle steel is connected with the first roller by bolts and nuts, and two short steel plates are added on both sides of the outside of the two first column angle steels. The lower contact points of the two first rollers are located at the lower parts of the two first column angle steels, and the upper contact points of the two first rollers are located at the two short steel plates of the two first column angle steels. Three contact points are arranged on the short steel plates, so that the angles of the two relative first rollers can be adjusted. The two relative first rollers are V-shaped, and a first limiting wheel is arranged above the V-shaped mouth. The two ends of the first limiting wheel are respectively connected to the two first column angle steels by bolts and nuts. Several symmetrical bolt through holes are arranged on the upper parts of the two first column angle steels, so that the position of the first limiting wheel on the first column angle steel can be adjusted.
[0006] The groove-type adjustable telescopic pulley includes a second column angle steel, a second lead screw, a second fixed block and a second roller; the second column angle steel is fixedly connected at both ends with a second fixed block, the second fixed block is threadedly connected to the second lead screw, a hexagonal prism is provided in the middle of the second lead screw, and four second rollers are fixedly connected end to end to form a square closed roller group, the roller group is connected to the second column angle steel by bolts and nuts, and the second column angle steel is provided with several bolt through holes, and the position of the above-mentioned roller group on the second column angle steel can be adjusted.
[0007] The ladder-type adjustable telescopic pulley includes a third column angle steel, a second beam angle steel, a third fixed block, a third lead screw and a second limiting wheel; the upper, middle and lower ends of the two third column angle steels are respectively fixedly connected by the second beam angle steel, and the third column angle steel has third fixed blocks at both ends fixedly connected, the third fixed block is provided with a threaded hole, the third fixed block is threadedly connected to the third lead screw, and the two ends of the second limiting wheel are respectively connected to the two third column angle steels by bolts and nuts, a hexagonal prism is provided in the middle of the third lead screw, and the two third column angle steels are provided with several symmetrical bolt through holes, so that the position of the second limiting wheel on the third column angle steel can be adjusted.
[0008] At the V-shaped bend in the tunnel, the triangular ladder-shaped adjustable telescopic pulley is placed vertically and fixed vertically in the tunnel by tightening the first screw. The cable passes through the triangular roller group formed by the two first rollers and the first limiting wheel, thereby protecting and limiting the cable when passing through the V-shaped bend.
[0009] At the right-angle bend in the tunnel, the grooved adjustable telescopic pulley is placed vertically and fixed vertically in the tunnel by tightening the second screw. The cable passes through the four second rollers and is fixed end to end to form a square closed roller group, thereby protecting and limiting the cable when passing through the right-angle bend.
[0010] At the S-shaped bend in the tunnel, the ladder-shaped adjustable telescopic pulley is placed horizontally and fixed horizontally in the tunnel by tightening the third screw rod. Due to the characteristics of the S-shaped bend, the cable will approach the convex surface of the S-shaped bend in the tunnel when passing through the S-shaped bend, so the second limiting wheel is adjusted to be close to the convex surface of the S-shaped bend in the tunnel to protect and limit the cable.
[0011] The beneficial effects of the present invention are as follows: the present invention can fully ensure that the replaced cable is not damaged, ensure the integrity and use function of the cable; can adapt to all complex situations in the tunnel, and ensure smooth cable replacement construction; if encountering S-bends, right-angle bends, large-arc corners and V-shaped bends, the cable can be effectively controlled; greatly improve work efficiency and save more than 80% of labor. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.
[0013] Figure 1 It is a schematic structural diagram of the triangular ladder-shaped adjustable telescopic pulley in the present invention.
[0014] Figure 2 It is a structural schematic diagram of the groove-type adjustable telescopic pulley in the present invention.
[0015] Figure 3 It is a structural schematic diagram of the ladder-type adjustable telescopic pulley in the present invention.
[0016] Figure 4 This is a top view of Example 1.
[0017] Figure 5 This is a side view of Example 1.
[0018] Figure 6 This is a top view of Example 2.
[0019] Figure 7 This is a side view of Example 2.
[0020] Figure 8 This is a top view of Example 3.
[0021] Fig. 9 This is a side view of Example 3.
[0022] Numbers in the figure:
[0023] 1. Triangular trapezoidal adjustable telescopic pulley, 11. First column angle steel, 12. First beam angle steel, 13. First roller, 14. First limiting wheel, 15. First screw, 16. First fixed block, 2. Slot-type adjustable telescopic pulley, 21. Second column angle steel, 22. Second screw, 23. Second fixed block, 24. Second roller, 3. Trapezoidal adjustable telescopic pulley, 31. Third column angle steel, 32. Second beam angle steel, 33. Third fixed block, 34. Third screw, 35. Second limiting wheel, 4. Cable, 5. Tunnel V-shaped bend, 6. Tunnel S-shaped bend, 7. Tunnel right-angle bend. DETAILED DESCRIPTION
[0024] like Figure 1-9 As shown, an adjustable telescopic pulley for cable laying construction in a tunnel is divided into three types, the first type is a triangular trapezoidal adjustable telescopic pulley 1, the second type is a groove-type adjustable telescopic pulley 2, and the third type is a ladder-type adjustable telescopic pulley 3; a triangular trapezoidal adjustable telescopic pulley 1 is provided at the V-shaped bend 5 of the tunnel, a groove-type adjustable telescopic pulley 2 is provided at the right-angle bend 7 of the tunnel, and a ladder-type adjustable telescopic pulley 3 is provided at the S-shaped bend 6 of the tunnel.
[0025] The triangular ladder-shaped adjustable telescopic pulley 1 includes a first column angle steel 11, a first crossbeam angle steel 12, a first roller 13, a first limiting wheel 14, a first lead screw 15 and a first fixed block 16; the two first column angle steels 11 are fixedly connected at the top, middle and bottom by the first crossbeam angle steel 12, and the first column angle steel 11 is fixedly connected with the first fixed block 16 at both ends, and the first fixed block 16 is provided with a threaded hole, and the first fixed block 16 is threadedly connected with the first lead screw 15, and a hexagonal prism is provided in the middle of the first lead screw 15, and the first column angle steel 11 is connected with the first roller 13 by bolts and nuts, and the two first column angle steels 11 are respectively increased on both sides of the outside Two short steel plates, the lower contact points of the two first rollers 13 are located at the lower parts of the two first column angle steels 11, and the upper contact points of the two first rollers 13 are located on the two short steel plates of the two first column angle steels 11. Three contact points are arranged on the short steel plates, so that the angles of the two relative first rollers 13 can be adjusted. The two relative first rollers 13 are V-shaped, and a first limiting wheel 14 is arranged above the V-shaped mouth. The two ends of the first limiting wheel 14 are respectively connected to the two first column angle steels 11 by bolts and nuts. Several symmetrical bolt through holes are arranged on the upper parts of the two first column angle steels 11, and the position of the first limiting wheel 14 on the first column angle steel 11 can be adjusted.
[0026] The groove-type adjustable telescopic pulley 2 includes a second column angle steel 21, a second lead screw 22, a second fixed block 23 and a second roller 24; the second column angle steel 21 is fixedly connected with the second fixed blocks 23 at both ends, the second fixed block 23 is threadedly connected to the second lead screw 22, a hexagonal prism is provided in the middle of the second lead screw 22, and four second rollers 24 are fixedly connected end to end to form a square closed roller group, the roller group is connected to the second column angle steel 21 by bolts and nuts, and the second column angle steel 21 is provided with a plurality of bolt through holes, and the position of the above-mentioned roller group on the second column angle steel 21 can be adjusted.
[0027] The ladder-type adjustable telescopic pulley 3 includes a third column angle steel 31, a second beam angle steel 32, a third fixed block 33, a third screw 34 and a second limiting wheel 35; the upper, middle and lower ends of the two third column angle steels 31 are fixedly connected by the second beam angle steel 32 respectively, and the third column angle steel 31 is fixedly connected with the third fixed block 33 at both ends. The third fixed block 33 is provided with a threaded hole, and the third fixed block 33 is threadedly connected with the third screw 34. A hexagonal prism is provided in the middle of the third screw 34, and the two ends of the second limiting wheel 35 are respectively connected to the two third column angle steels 31 by bolts and nuts. The two third column angle steels 31 are provided with several symmetrical bolt through holes, so that the position of the second limiting wheel 35 on the third column angle steel 31 can be adjusted.
[0028] Example 1
[0029] At the V-shaped bend 5 of the tunnel, the triangular trapezoidal adjustable telescopic pulley 1 is placed vertically and fixed vertically in the tunnel by tightening the first screw 15. The cable 4 passes through the triangular roller group formed by the two first rollers 13 and the first limiting wheel 14, so as to protect and limit the cable 4 when passing through the V-shaped bend.
[0030] Example 2
[0031] At the right-angle bend 7 of the tunnel, the groove-shaped adjustable telescopic pulley 2 is placed vertically and fixed vertically in the tunnel by tightening the second screw 22. The cable 4 passes through four second rollers 24 and is fixedly connected end to end to form a square closed roller group, thereby protecting and limiting the cable 4 when passing through the right-angle bend 7.
[0032] Example 3
[0033] At the S-shaped bend in the tunnel, the ladder-shaped adjustable telescopic pulley 3 is placed horizontally and fixed horizontally in the tunnel by tightening the third screw 34. Due to the characteristics of the S-shaped bend, the cable 4 will approach the convex surface of the S-shaped bend in the tunnel when passing through the S-shaped bend, so the second limiting wheel 35 is adjusted to be close to the convex surface of the S-shaped bend in the tunnel to protect and limit the cable 4.
Claims
1. An adjustable telescopic pulley for cable laying in a tunnel, characterized in that: There are three types of adjustable telescopic pulleys: the first type is a triangular ladder-shaped adjustable telescopic pulley (1), the second type is a groove-shaped adjustable telescopic pulley (2), and the third type is a ladder-shaped adjustable telescopic pulley (3); a triangular ladder-shaped adjustable telescopic pulley (1) is provided at a V-shaped bend (5) of the tunnel, a groove-shaped adjustable telescopic pulley (2) is provided at a right-angle bend (7) of the tunnel, and a ladder-shaped adjustable telescopic pulley (3) is provided at an S-shaped bend (6) of the tunnel; The triangular ladder-shaped adjustable telescopic pulley (1) comprises a first column angle steel (11), a first cross beam angle steel (12), a first roller (13), a first limit wheel (14), a first screw (15) and a first fixed block (16); the two first column angle steels (11) are fixedly connected at the top, middle and bottom by the first cross beam angle steel (12), the first column angle steel (11) is fixedly connected to the first fixed block (16) at both ends, the first fixed block (16) is provided with a threaded hole, the first fixed block (16) is threadedly connected to the first screw (15), a hexagonal prism is provided in the middle of the first screw (15), and the first column angle steel (11) is connected by bolts and nuts. A first roller (13) is provided, and two short steel plates are respectively added on both sides of the outside of the two first column angle steels (11), the lower contact points of the two first rollers (13) are located at the lower parts of the two first column angle steels (11), and the upper contact points of the two first rollers (13) are located at the two short steel plates of the two first column angle steels (11), and three contact points are arranged on the short steel plates, and the two opposite first rollers (13) are V-shaped, and a first limiting wheel (14) is arranged above the V-shaped opening, and the two ends of the first limiting wheel (14) are respectively connected to the two first column angle steels (11) by bolts and nuts, and the upper parts of the two first column angle steels (11) are provided with a plurality of symmetrical bolt through holes; The groove-type adjustable telescopic pulley (2) comprises a second column angle steel (21), a second lead screw (22), a second fixing block (23) and a second roller (24); the second column angle steel (21) is fixedly connected to the second fixing block (23) at both ends, the second fixing block (23) is threadedly connected to the second lead screw (22), a hexagonal prism is provided in the middle of the second lead screw (22), four second rollers (24) are fixedly connected end to end to form a square closed roller group, the roller group is connected to the second column angle steel (21) by bolts and nuts, and the second column angle steel (21) is provided with a plurality of bolt through holes; The ladder-shaped adjustable telescopic pulley (3) comprises a third column angle steel (31), a second cross beam angle steel (32), a third fixing block (33), a third lead screw (34) and a second limiting wheel (35); the upper, middle and lower ends of the two third column angle steels (31) are respectively fixedly connected by the second cross beam angle steel (32); the third fixing blocks (33) are fixedly connected at both ends of the third column angle steel (31); the third fixing blocks (33) are provided with threaded holes; the third fixing blocks (33) are threadedly connected to the third lead screw (34); a hexagonal prism is provided in the middle of the third lead screw (34); the two ends of the second limiting wheel (35) are respectively connected to the two third column angle steels (31) by bolts and nuts; the two third column angle steels (31) are provided with a plurality of symmetrical bolt through holes.