Cable clamping and loading prevention device capable of simultaneously pulling multiple stay cables

Abstract

The utility model provides an anti-jamming cable-loading device capable of simultaneously pulling a plurality of stay cables, a main body structure is provided with a connecting rod and a through type preformed hole, the middle part of the main body structure is provided with four connecting grooves for installing and fixing steel strands, the four connecting grooves are distributed on the upper layer and the lower layer of the main body structure, and the connecting rods are connected with the through type preformed hole. The front end and the rear end of the connecting groove are each provided with a limiting groove used for limiting the steel strand. The main body structure is wrapped with a cable clamping prevention unit, the cable clamping prevention unit is composed of an upper smooth half shell and a lower smooth half shell, and the two half shells are connected and fixed through interlocking buckles and wrap and fix the main body structure. The four steel strands penetrate through four wire passing holes formed in the anti-winding unit so as to be prevented from being twisted in the cable feeding process. The device is simple in structure, the working efficiency and the cable feeding stability and safety are improved by changing the structure and the cable feeding number of the cable feeding device, and the safety and quality of the stay cable steel strand in the cable feeding link are ensured.

Description

Technical Field

[0001] The utility model relates to the field of cable-stayed cables of bridges, and particularly to an anti-cable jamming cable hoisting device suitable for simultaneously hoisting multiple cable-stayed cables. Background Art

[0002] With the progress of technology and science and technology, many long-span bridge types will choose cable-stayed bridges. As an important representative of modern bridge engineering, cable-stayed bridges play an important role in traffic construction due to their unique structure and beautiful appearance. When hoisting cables, a winch triangular circulation system is adopted. Through the traction method of the winch, the cable hoisting device with the cable-stayed cable is sent outside the tower and passed through the saddle, and then pulled to the bridge deck by the cable hoisting device on the other side. This traction device method is also called soft traction. Due to current technical limitations, the number of cables hoisted each time by the cable-stayed cable hoisting circulation system is one to two. For projects with tight construction periods, the large number and large volume of cable-stayed cables affect the construction efficiency of subsequent working conditions and increase the construction cost. In addition, the existing cable hoisting device has a simple structure and no anti-dropping and anti-twisting measures, and the safety factor cannot be effectively guaranteed. Summary of the Utility Model

[0003] In order to solve the deficiencies of the prior art, the utility model provides an anti-cable jamming cable hoisting device suitable for simultaneously hoisting multiple cable-stayed cables. The device has a simple structure. By changing the structure of the cable hoisting device and the number of cables hoisted, the working efficiency, cable hoisting stability and safety are improved, and the safety and quality of the steel strands of the cable-stayed cables in the cable hoisting link are ensured.

[0004] The technical solution adopted to achieve the above object of the utility model is as follows:

[0005] An anti-cable jamming cable hoisting device for simultaneously hoisting multiple cable-stayed cables at least includes a main structure. Connecting rods connected to the traction steel wire ropes are arranged at the front and rear ends on one side of the main structure. A through-type reserved hole for the steel wire rope to pass through is arranged on the other side of the main structure. Four connecting grooves for installing and fixing the steel strands are arranged in the middle of the main structure. The four connecting grooves are distributed on the upper and lower layers of the main structure. Limiting grooves for limiting the steel strands are arranged at the front and rear ends of the connecting grooves.

[0006] An anti-cable jamming unit is coated and arranged outside the main structure. The anti-cable jamming unit is composed of two smooth semi-shells on the upper and lower sides. The two semi-shells are connected and fixed through interlocking buckles and the main structure is coated and fixed. Through holes are arranged at the positions corresponding to the connecting rods, the through-type reserved holes and the connecting grooves on the anti-cable jamming unit.

[0007] An anti-twisting unit is also arranged in the cable hoisting device. The anti-twisting unit is arranged and fixed at the pipe orifice of the HDPE pipe. Four steel strands respectively pass through four wire passing holes arranged on the anti-twisting unit to avoid twisting during the cable hoisting process.

[0008] Further, bolt holes are evenly distributed on the main body structure, and bolt holes are also provided at corresponding positions on the two half shells. Bolts are installed in the bolt holes on the half shells and the bolt holes on the main body structure, and the bolts connect and fix the anti - cable - jamming unit to the main body structure.

[0009] Further, the anti - entanglement unit is of a plate structure. Four wire - passing holes distributed in a rectangle are provided on the anti - entanglement unit, and fixing holes are provided at the four side edges of the anti - entanglement unit.

[0010] Further, the end of the steel strand is installed in the connection groove through a traction connector, and the diameter of the front part of the traction connector is larger than the front - end limit groove.

[0011] Further, a groove - bottom limiting part is provided in the rear - end limit groove in the connection groove, and the groove - bottom limiting part abuts against the bottom of the traction connector to prevent the steel strand from falling off during traction.

[0012] Further, a groove - upper limiting part is provided in the rear - end limit groove in the connection groove, and the groove - upper limiting part performs upper - limit on the traction connector to prevent the steel strand and the traction connector from running out.

[0013] The beneficial effects of the present utility model based on its technical solution are as follows:

[0014] (1) The anti - cable - jamming cable - hoisting device for simultaneously hoisting multiple stay cables provided by the present utility model can improve the padlocking efficiency, effectively avoid the problems that the stay cables are jammed in the cable duct or get twisted or knotted during traction, has good overall stability, ensures the cable - hoisting quality of the stay cables, also ensures the cable - hoisting efficiency and construction safety, solves the on - site construction problems, improves the work efficiency, enables the on - site work to proceed orderly to the next process, and ensures the completion of the project on schedule.

[0015] (2) The anti - cable - jamming cable - hoisting device for simultaneously hoisting multiple stay cables provided by the present utility model has a reasonable structural design, is convenient for installation and disassembly, can be reused cyclically, saves manpower and material resources, speeds up the construction progress, improves economic benefits, ensures the quality of the steel - strand construction and the safety of personnel, and solves a series of problems in the traction construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top - view schematic diagram of the main body structure in the present utility model.

[0017] Figure 2 It is a side - view schematic diagram of the main body structure in the present utility model.

[0018] Figure 3 It is a top - view schematic diagram of the anti - cable - jamming unit in the present utility model.

[0019] Figure 4 It is a side view schematic diagram of the anti-jam unit in the utility model.

[0020] Figure 5 It is a front view schematic diagram of the anti-winding unit in the present invention.

[0021] In the figure: 1-main structure, 2-connecting rod, 3-connecting hole, 4-through reserved hole, 5-rear end limiting groove, 6-front end limiting groove, 7-groove bottom limiting piece, 8-groove upper limiting piece, 9-anti-jamming unit, 10-interlocking buckle, 11-bolt hole, 12-anti-winding unit, 13-wire hole, 14-fixing hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] The utility model provides a cable-stuck prevention device for pulling multiple inclined cables at the same time. The structure is as follows: Figures 1-5 shown.

[0024] In this embodiment, the main structure 1 has connecting rods 2 at the front and rear ends on the left side for connecting to the traction wire rope. A through-hole 4 is provided on the right side of the main structure 1 for the wire rope to pass through. Four connecting slots for securing the steel strands are located in the middle of the main structure, distributed on the upper and lower levels of the main structure. The front and rear ends of the connecting slots are each equipped with retaining grooves for retaining the strands. In actual use, the traction wire rope is passed through the reserved connecting holes 3 on the left end of the connecting rods 2 and then locked with a cross buckle. On the right side, the traction wire rope is passed through the through-holes 4, allowing the rope to move freely within these through-holes 4. The ends of the strands are secured to the connecting slots via a traction connector. The front end of the traction connector has a larger diameter than the front retaining groove 6, which primarily secures the stay cable to the traction equipment. The rear retaining groove 5 in the connecting slot is equipped with a bottom retaining member 7, which presses against the bottom of the traction connector to prevent the strands from falling out during traction. The rear end limiting groove 6 is provided with a groove upper limiting piece 8, which performs an upper limit on the traction connector to prevent the steel strand and the traction connector from running out.

[0025] An anti - snagging unit 9 is provided on the outer surface of the main body structure 1. The anti - snagging unit 9 is composed of two smooth semi - shells. The two semi - shells are connected and fixed by an interlocking buckle 10 and wrap and fix the main body structure 1. Through - holes are provided at positions corresponding to the connecting rod 2, the through - type reserved hole 4, and the connecting groove on the anti - snagging unit 9. Bolt holes 11 are evenly distributed on the main body structure 1, and bolt holes 11 are also provided at corresponding positions on the two semi - shells. Bolts are installed in the bolt holes 11 on the semi - shells and the bolt holes 11 on the main body structure, and the bolts connect and fix the anti - snagging unit 9 and the main body structure 1. In this patent, the anti - snagging unit 9 is divided into upper and lower halves. After the preparatory work for pulling the stay cables is completed, the anti - snagging device 9 is aligned and buckled down on the interlocking buckle 10 and locked, and then bolts are used to pass through the bolt holes 11 and tightened with screws to prevent the risk of falling off during the pulling process. The main function of this device is to prevent the stay cables from getting stuck in the already installed stay cables during the pulling process. Its shape is composed of two semi - circles, and the appearance is smooth and not prone to snagging cables.

[0026] An anti - entanglement unit 12 is also provided in the upper - cable device. The anti - entanglement unit 12 is arranged and fixed at the pipe orifice of the HDPE pipe. Four steel strands pass through four wire - passing holes 13 provided on the anti - entanglement unit 12 respectively to avoid twisting during the upper - cable process. The anti - entanglement unit 12 is of a plate - type structure. Four wire - passing holes are arranged in a rectangular distribution on the anti - entanglement unit 12, and fixing holes are provided at the four side edges of the anti - entanglement unit. The anti - entanglement unit 12 is an external component, and this device is cast from hard plastic. Its main function is to pass the stay cables through the wire - passing holes 13 before the stay cables are installed in the upper - cable device. After all the pulling work is ready, a steel bar or a steel wire rope is used to pass through the fixing holes 14 to fix the anti - entanglement unit to prevent it from moving during the cable - feeding process, and effectively prevent the stay cables from twisting and winding together during the pulling process, which affects the subsequent construction progress.

[0027] The working process of an anti - snagging upper - cable device for simultaneously pulling multiple stay cables provided by the present utility model is as follows: Pass the four stay cables through the anti - entanglement unit one by one, then cut off the redundant steel strands after peeling, leaving only one steel strand in the middle. The front end needs to be pounded into a round head to better embed it in the traction connector. After passing the steel strand through the upper - cable device and embedding it in the groove to be stuck, then use the anti - snagging unit to align and fix it on the upper and lower ends of the main body structure with the interlocking device, and then use bolts and nuts for secondary reinforcement. Finally, after fixing the anti - entanglement unit, the traction can start. This set of devices improves the hanging - cable construction efficiency, reduces the input of manpower and material resources, saves costs, and ensures the construction period.

Claims

1. An anti - jamming cable - laying device for simultaneously pulling multiple stay cables, at least including a main structure, characterized in that: Connecting rods connected to the traction steel wire ropes are arranged at the front and rear ends on one side of the main body structure. A through-type reserved hole for the steel wire rope to pass through is arranged on the other side of the main body structure. Four connection grooves for installing and fixing the steel strands are arranged in the middle of the main body structure. The four connection grooves are distributed on the upper and lower layers of the main body structure. Limiting grooves for limiting the steel strands are arranged at the front and rear ends of the connection grooves. An anti-cable jamming unit is arranged on the outer surface of the main body structure. The anti-cable jamming unit consists of two smooth semi-shells. The two semi-shells are connected and fixed by interlocking buckles and wrap and fix the main body structure. Through holes are arranged at the positions corresponding to the connecting rods, the through-type reserved holes, and the connection grooves on the anti-cable jamming unit. An anti-twisting unit is also arranged in the upper cable device. The anti-twisting unit is arranged at the pipe orifice of the HDPE pipe and fixed. The four steel strands respectively pass through the four wire passing holes arranged on the anti-twisting unit to avoid twisting during the upper cable process.

2. The anti-jamming cable-loading device for simultaneously towing multiple stay cables according to claim 1, wherein: Bolt holes are evenly distributed on the main body structure. Bolt holes are also arranged at the corresponding positions on the two semi-shells. Bolts are installed in the bolt holes on the semi-shells and the bolt holes on the main body structure. The bolts connect and fix the anti-cable jamming unit and the main body structure.

3. The anti-jamming cable sheathing device for simultaneously towing multiple stay cables according to claim 1, characterized in that: The anti-twisting unit is of a plate structure. Four wire passing holes distributed in a rectangle are arranged on the anti-twisting unit. Fixing holes are arranged at the four side edges of the anti-twisting unit.

4. The anti - jamming cable - guiding device for simultaneously towing multiple stay cables according to claim 1, characterized in that: The end of the steel strand is installed in the connection groove through a traction connector. The diameter of the front part of the traction connector is larger than that of the front limiting groove.

5. The anti - jamming cable - guiding device for simultaneously pulling multiple stay cables according to claim 4, characterized in that: A groove bottom limiting part is arranged in the rear limiting groove in the connection groove. The groove bottom limiting part abuts against the bottom of the traction connector to prevent the steel strand from falling off during traction.

6. The anti-jamming cable threading device for simultaneously pulling multiple stay cables according to claim 4, characterized in that: A groove upper limiting part is arranged in the rear limiting groove in the connection groove. The groove upper limiting part performs upper limit on the traction connector to prevent the steel strand and the traction connector from running out.

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