Fault cable lifting device in trench well

Abstract

The invention discloses a trench well fault cable lifting device, and relates to the field of power grid overhaul, the trench well fault cable lifting device comprises a bearing mechanism, a labor-saving traction mechanism, a cable connecting mechanism and a lifting arm, the bearing mechanism comprises a connecting beam and a stand column welded to the top of the connecting beam, and the two ends of the connecting beam are fixedly connected with supporting frames respectively; according to the cable lifting device, a faulty cable is placed in the first U-shaped seat, the bolt is rotated to block an opening of the first U-shaped seat, the faulty cable is limited in the first U-shaped seat, the stability of the faulty cable in the lifting process is guaranteed, the pull ring is pulled, the lifting arm is lifted, and the cable can be lifted by pulling the pull ring. And under the cooperation of the steering wheel, the fixed pulley and the upper pulley, the lifting arm is slowly lifted upwards to lift the faulty cable out of the trench well, so that the faulty cable can be conveniently overhauled by an electric power worker, the time and physical power consumed by overhauling are reduced, and the efficiency of first-aid repair work is improved.

Description

Technical Field

[0001] The invention belongs to the field of power grid maintenance, and in particular relates to a fault cable lifting device in a trench well. Background Art

[0002] In recent years, with the construction and development of cities, power cable lines have gradually shown characteristics such as occupying less urban space, being safer and more stable compared to traditional overhead lines.

[0003] However, during operation, cable lines are inevitably prone to cable failure and damage due to many reasons such as external force damage, natural factors, poor manufacturing process, insulation aging and moisture.

[0004] Moreover, due to historical reasons, the development of the distribution network shows regional imbalance. The old urban areas of some cities are often difficult to inspect and repair because the cables in the trenches and wells are stacked together and block the cable pipelines. In particular, when passing through joint wells, three-way wells and four-way wells, the cables in the trenches and wells are cross-stacked and the space in the wells is small. Some on-site cranes cannot enter or the safety distance is not enough after the boom is raised. Some on-site repair personnel need to use tools such as crowbars and hemp ropes, and invest a lot of manpower to pull the faulty cables to the appropriate position, which consumes a lot of time and physical strength and reduces the efficiency of the repair work. These unfavorable objective conditions have brought great difficulties and safety hazards to the repair work of the construction and repair personnel.

[0005] Therefore, we propose a fault cable lifting device in trench wells. Summary of the invention

[0006] In view of the problems that cables are cross-stacked in trenches and wells, the space in the wells is narrow, some on-site cranes cannot enter or the safety distance is insufficient after the boom is raised, and some on-site emergency repair personnel need to use tools such as crowbars and hemp ropes, and invest a lot of manpower to pull the faulty cables to the appropriate position, which consumes a lot of time and physical strength and reduces the efficiency of the emergency repair work. The present invention provides a faulty cable lifting device in trenches and wells.

[0007] The solution adopted by the present invention to solve its technical problems is: a fault cable lifting device in a trench well, including a bearing mechanism, a labor-saving pulling mechanism, a cable connecting mechanism and a lifting arm, the bearing mechanism includes a connecting beam and a column welded to the top of the connecting beam, the two ends of the connecting beam are respectively fixedly connected to support frames, and the top of the column is installed with a hinged seat.

[0008] The lifting arm is hingedly installed in the hinged seat.

[0009] The cable connection mechanism comprises a suspension rope and a clamp for connecting the cable, wherein the upper end of the suspension rope is installed at the right end of the lifting arm, and the lower end of the suspension rope is connected to the clamp.

[0010] The labor-saving pulling mechanism includes an upper pulley, a fixed pulley, a steering wheel and a pull rope. The upper pulley is installed at the left end of the lifting arm, the fixed pulley and the steering wheel are installed on the side of the column, and the steering wheel is located on the upper side of the fixed pulley. One end of the pull rope is fixedly connected to the fixed pulley, and the other end thereof passes through the upper pulley, the fixed pulley and the steering wheel in sequence and extends to the top of the support frame.

[0011] Preferably, two wheels are mounted on a side of the support frame facing away from the connecting beam.

[0012] Preferably, the clamp comprises a U-shaped seat 1, an open end of the U-shaped seat 1 is provided with two threaded holes, and bolts are threadedly connected in the threaded holes.

[0013] Preferably, a pull ring is installed at the end of the pull rope.

[0014] Preferably, the support frame, connecting beams and columns are respectively made of square steel, and the lifting arm is made of steel pipe.

[0015] Preferably, a rope locking mechanism for fixing the draw rope is also included.

[0016] Preferably, the rope locking mechanism includes a U-shaped seat 2, a locking wheel and a driving assembly. The U-shaped seat 2 is fixedly mounted on the column and is located below the steering wheel. A rotating shaft is rotatably mounted inside the U-shaped seat 2, the locking wheel is mounted on the rotating shaft, and the rim of the locking wheel is provided with anti-slip teeth. The driving assembly is mounted on the column and can drive the rotating shaft to rotate.

[0017] Preferably, the driving assembly includes an electric push rod and a gear sleeved on the outer end of the rotating shaft. The electric push rod is installed on the column, and its telescopic end passes through the column and is installed with a rack, which is meshed with the gear.

[0018] Preferably, the driving assembly is a stepper motor installed on the second outer side surface of the U-shaped seat, and the output shaft of the stepper motor is fixedly connected to the outer end of the rotating shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention places the faulty cable in a U-shaped seat, and by rotating the bolts, the bolts seal the open opening of the U-shaped seat, thereby confining the faulty cable in the U-shaped seat to ensure the stability of the faulty cable during the lifting process. By pulling the pull ring, the lifting arm is slowly lifted upward with the cooperation of the steering wheel, the fixed pulley and the upper pulley, and the faulty cable is lifted out of the trench, so that the power workers can inspect and repair the faulty cable, reduce the time and physical strength consumed in the inspection, and improve the efficiency of the emergency repair work.

[0020] 2. The present invention can greatly reduce the force of workers pulling the rope by setting a fixed pulley and an upper pulley and designing a labor-saving pulley group, effectively reducing the work intensity and improving the work efficiency.

[0021] 3. The fault cable lifting device in the trench well designed by the present invention has a pull rope extending to the top of the support frame, which is not only suitable for lifting operations above the wellhead, but also can be used for operations above the cable trench.

[0022] 4. The present invention drives the rotating shaft and the locking wheel to rotate through the driving assembly, so that the locking wheel contacts the pull rope, locks the pull rope and positions it so that the pull rope no longer moves, thereby eliminating the need for electrician workers to continuously pull the pull rope, further reducing the workload of electrician workers and making it easier for them to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the left-side cross-sectional structure of the present invention.

[0024] In the figure: 1 lifting arm, 21 supporting frame, 22 wheels, 23 connecting beam, 24 column, 25 articulated seat, 31 upper pulley, 32 pulling rope, 33 fixed pulley, 34 steering wheel, 35 pulling ring, 4 lifting rope, 51 U-shaped seat 1, 52 bolts, 61 U-shaped seat 2, 62 locking wheel, 63 rotating shaft, 64 electric push rod, 65 gear, 66 rack. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-4 The present invention provides a technical solution for a fault cable lifting device in a trench well: Embodiment 1: according to Figure 1-4 As shown, it includes a bearing mechanism, a labor-saving pulling mechanism, a cable connecting mechanism and a lifting arm 1. The bearing mechanism includes a connecting beam 23 and a column 24 welded to the top of the connecting beam 23. Both ends of the connecting beam 23 are fixedly connected with a support frame 21. Two wheels 22 are installed on the side of the support frame 21 away from the connecting beam 23. The arrangement of the wheels 22 makes the device easy to move and carry.

[0027] A hinge seat 25 is installed at the top end of the column 24, and the lifting arm 1 is hingedly installed in the hinge seat 25 through a pin shaft, so that the lifting arm 1 can move at the hinge point.

[0028] The cable connecting mechanism includes a lifting rope 4 and a clamp for connecting the cable. The upper end of the lifting rope 4 is installed at the right end of the lifting arm 1. The clamp includes a U-shaped seat 51 installed at the lower end of the lifting rope 4. The open end of the U-shaped seat 51 is provided with two threaded holes. Bolts 52 are threadedly connected in the threaded holes. By placing the faulty cable in the U-shaped seat 51 and rotating the bolt 52, the bolt 52 blocks the open end of the U-shaped seat 51, thereby confining the faulty cable in the U-shaped seat 51 to ensure the stability of the faulty cable during the lifting process.

[0029] The labor-saving pulling mechanism includes an upper pulley 31, a fixed pulley 33, a steering wheel 34 and a pull rope 32. The upper pulley 31 is installed at the left end of the lifting arm 1, and the fixed pulley 33 and the steering wheel 34 are installed on the side of the column 24. By arranging the fixed pulley 33 and the upper pulley 31, the design of the labor-saving pulley group can greatly reduce the force of the worker pulling the pull rope 32, effectively reduce the work intensity, and improve the work efficiency.

[0030] The steering wheel 34 is located on the upper side of the fixed pulley 33, one end of the pull rope 32 is fixedly connected to the fixed pulley 33, and the other end thereof passes through the upper pulley 31, the fixed pulley 33 and the steering wheel 34 in sequence and extends to the top of the support frame 21. A pull ring 35 is installed on the end of the pull rope 32. By pulling the pull ring 35, with the cooperation of the steering wheel 34, the fixed pulley 33 and the upper pulley 31, the lifting arm 1 is slowly lifted upward to lift the faulty cable out of the trench, so as to facilitate the power workers to repair the faulty cable, reduce the time and physical strength consumed in the repair, and improve the efficiency of the emergency repair work.

[0031] The support frame 21, the connecting beam 23, and the column 24 are respectively made of square steel, and the lifting arm 1 is made of steel pipe.

[0032] When used specifically, the present invention is a device for lifting a faulty cable in a trench or well. First, the device is moved to the top of the wellhead or the cable trench. Then, the lifting device is lowered to the position of the faulty cable, and the faulty cable is placed in the U-shaped seat 51. The bolts 52 are rotated one by one to seal the open opening of the U-shaped seat 51, so that the faulty cable is confined in the U-shaped seat 51. Then the electrician pulls the pull ring 35, and with the cooperation of the steering wheel 34, the fixed pulley 33 and the upper pulley 31, the lifting arm 1 is slowly lifted upward, and the faulty cable is lifted out of the trench well through the lifting rope 4 and the U-shaped seat 51, so that the electrician can repair the faulty cable.

[0033] Embodiment 2: On the basis of the first embodiment, Figure 1-4As shown, it also includes a rope locking mechanism for fixing the pull rope 32, and the rope locking mechanism includes a U-shaped seat 61, a locking wheel 62 and a driving assembly. The U-shaped seat 61 is fixedly installed on the column 24 and is located below the steering wheel 34. The front and rear side walls of the U-shaped seat 61 are respectively installed with bearings, and a rotating shaft 63 is installed in the bearing. The locking wheel 62 is mounted on the rotating shaft 63, and the wheel rim of the locking wheel 62 is provided with anti-slip teeth to increase the friction between the locking wheel 62 and the pull rope 32.

[0034] The driving assembly includes an electric push rod 64 and a gear 65 mounted on the outer end of the rotating shaft 63. The electric push rod 64 is installed on the column 24. The telescopic end of the electric push rod passes through the column 24 and is installed with a rack 66. The rack 66 is meshed with the gear 65. The electric push rod 64 contracts to drive the rack 66 to move to the right, driving the rotating shaft 63 and the locking wheel 62 to rotate, so that the locking wheel 62 contacts the pull rope 32, locks the pull rope 32 in place, and stops the pull rope 32 from moving. As a result, there is no need for the electrician to continuously pull the pull rope 32, which further reduces the workload of the electrician and makes it easier for the electrician to use.

[0035] Embodiment three: On the basis of the second embodiment, the difference is as follows: the driving component is a stepper motor installed on the outer side of the U-shaped seat 61, and the output shaft of the stepper motor is fixedly connected to the outer end of the rotating shaft 63. The rotating shaft 63 and the locking wheel 62 are driven by the stepper motor to rotate, so that the locking wheel 62 contacts the pull rope 32, and the pull rope 32 is locked and positioned so that the pull rope 32 no longer moves, thereby eliminating the need for electrician workers to continuously pull the pull rope 32, further reducing the workload of electrician workers and making it convenient for electrician workers to use.

Claims

1. A fault cable lifting device in a trench well, characterized by: It includes a bearing mechanism, a labor-saving pulling mechanism, a cable connecting mechanism and a lifting arm. The bearing mechanism includes a connecting beam and a column welded on the top of the connecting beam. The two ends of the connecting beam are respectively fixedly connected with a supporting frame, and the top of the column is installed with a hinged seat. The lifting arm is hingedly installed in the hinged seat; The cable connection mechanism includes a suspension rope and a clamp for connecting the cable, wherein the upper end of the suspension rope is installed at the right end of the lifting arm, and the lower end of the suspension rope is connected to the clamp; The labor-saving pulling mechanism includes an upper pulley, a fixed pulley, a steering wheel and a pull rope. The upper pulley is installed at the left end of the lifting arm, the fixed pulley and the steering wheel are installed on the side of the column, and the steering wheel is located on the upper side of the fixed pulley. One end of the pull rope is fixedly connected to the fixed pulley, and the other end thereof passes through the upper pulley, the fixed pulley and the steering wheel in sequence and extends to the top of the support frame.

2. The fault cable lifting device in trench well according to claim 1 is characterized in that: Two wheels are installed on the side of the support frame away from the connecting beam.

3. The fault cable lifting device in trench well according to claim 1 is characterized in that: The clamp comprises a U-shaped seat 1, an opening end of the U-shaped seat 1 is provided with two threaded holes, and bolts are threadedly connected in the threaded holes.

4. The fault cable lifting device in trench well according to claim 1 is characterized in that: A pull ring is installed at the end of the pull rope.

5. The fault cable lifting device in trench well according to claim 1 is characterized in that: The support frame, connecting beams and columns are respectively made of square steel, and the lifting arm is made of steel pipe.

6. The fault cable lifting device in a trench well according to any one of claims 1 to 5, characterized in that: A cord locking mechanism is also included for securing the draw cord.

7. The fault cable lifting device in trench well according to claim 1 is characterized by: The rope locking mechanism includes a U-shaped seat 2, a locking wheel and a driving assembly. The U-shaped seat 2 is fixedly mounted on the column and is located below the steering wheel. A rotating shaft is rotatably mounted inside the U-shaped seat 2. The locking wheel is mounted on the rotating shaft. The rim of the locking wheel is provided with anti-slip teeth. The driving assembly is mounted on the column and can drive the rotating shaft to rotate.

8. The fault cable lifting device in trench well according to claim 7, characterized in that: The driving assembly comprises an electric push rod and a gear sleeved on the outer end of the rotating shaft. The electric push rod is installed on the column. The telescopic end of the electric push rod passes through the column and is installed with a rack, which is meshed with the gear.

9. The fault cable lifting device in trench well according to claim 7, characterized in that: The driving assembly is a stepper motor installed on the second outer side of the U-shaped seat, and the output shaft of the stepper motor is fixedly connected to the outer end of the rotating shaft.

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