Line lifting device of power distribution network frame

Abstract

The invention relates to the technical field of power distribution net rack line installation, in particular to a power distribution net rack line lifting device which comprises a fixed shell, a fixed plate is fixedly connected to the surface of one side of the fixed shell, two rectangular rods are slidably connected to the fixed plate, the two rectangular rods are connected through a clamping block, and the clamping block is fixedly connected with the fixed shell. Arc-shaped grooves are formed in the fixing plate and the clamping blocks; a rotating assembly is arranged in the fixed shell and comprises a servo motor fixedly installed on the inner wall of the fixed shell, the driving end of the servo motor is fixedly connected with a winding roller, and the winding roller is connected with an installation block through a steel cable. And a hook is arranged below the mounting block. According to the invention, the operation is simple, convenient and rapid, maintenance personnel do not need to manually lift up the cable by using a rope, the safety is high, the workload of the maintenance personnel is small, the consumed time is short, and the maintenance and replacement efficiency of the cable is high.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution network line installation, and in particular to a line lifting device for a power distribution network. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technologies related to the installation of distribution network lines are also constantly improving. In the daily maintenance of the power grid, it is necessary to regularly inspect and check the cables and replace the cables with potential safety hazards in time. When repairing and replacing the cables, the spare cables need to be lifted onto the poles for replacement.

[0003] At present, electric poles are installed in places with good traffic conditions, and cables can generally be transported upwards by large-scale mechanical automated lifting equipment. When electric poles are installed in geographical locations with poor traffic conditions, large-scale mechanical automated lifting equipment cannot be used to transport cables, and maintenance personnel are required to use ropes to transport the cables upwards to the poles. The maintenance personnel have a large workload, take a long time, and have low efficiency in repairing and replacing cables. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: when electric poles are installed in geographical locations with poor traffic conditions, large-scale mechanical automated lifting equipment cannot be used to transport cables, and maintenance personnel are required to use ropes to transport the cables upward to the electric poles. The workload of maintenance personnel is large, the time is long, and the efficiency of cable maintenance and replacement is low. A line lifting device for a distribution network rack is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A line lifting device for a power distribution grid, comprising a fixed shell, a fixed plate fixedly connected to one side surface of the fixed shell, two rectangular rods slidably connected to the fixed plate, the two rectangular rods are connected by a clamping block, and arc grooves are provided on the fixed plate and the clamping block;

[0007] A rotating assembly is arranged inside the fixed housing, and the rotating assembly includes a servo motor fixedly mounted on the inner wall of the fixed housing, a driving end of the servo motor is fixedly connected to a winding roller, and the winding roller is connected to a mounting block via a steel cable;

[0008] A hook is provided below the mounting block, and a limiting assembly is provided on the hook, wherein the limiting assembly comprises a rotating ring rotatably mounted on the hook, a torsion spring is sleeved on the hook, one end of the torsion spring is fixedly connected to the hook, and the other end of the torsion spring is fixedly connected to the rotating ring, a limiting plate is fixedly connected to the rotating ring, a slot for connecting the hook is provided on the limiting plate, and a rubber pad is fixedly connected to the inner wall of the slot.

[0009] Preferably, an inner wall of each arc-shaped groove is fixedly connected with an arc-shaped pad, and the arc-shaped pad is made of rubber material.

[0010] Preferably, the fixing plate is provided with two rectangular grooves for connecting the rectangular rods, each of the rectangular rods is provided with a through groove, each of the through grooves is slidably connected with a sliding rod, one end of the sliding rod is fixedly connected with a splint, and the surface of the splint is provided with anti-slip grooves.

[0011] Preferably, each of the sliding rods is sleeved with a first spring, one end of the first spring is fixedly connected to the sliding rod, and the other end of the first spring is fixedly connected to the corresponding rectangular rod.

[0012] Preferably, each of the sliding rods is fixedly connected to a limit rod with an L-shaped cross-section, each of the limit rods is slidably installed in the corresponding through groove, and a groove for connecting the limit rod is provided on the inner wall of one side of each rectangular groove.

[0013] Preferably, both side surfaces of the clamping block are fixedly connected with ear plates, each of the ear plates is slidably connected with a fixed shaft, each of the sliding rods is fixedly connected with a moving bar with an L-shaped cross-section at one end away from the clamping plate, and a slot for connecting to the corresponding fixed shaft is provided on one side surface of each moving bar.

[0014] Preferably, a threaded rod is threadedly connected to one side of the clamping block, a handle is fixedly connected to one end of the threaded rod, a rotating plate is rotatably connected to the threaded rod, and each of the fixed shafts is fixedly connected to the rotating plate.

[0015] Preferably, a fixing frame is fixedly connected to the lower surface of the mounting block, a through hole for connecting the hook is opened on the lower surface of the fixing frame, a threaded sleeve is fixedly connected inside the fixing frame, and the hook and the threaded sleeve are threadedly connected.

[0016] Preferably, a cavity is provided inside the mounting block, a cover plate is connected to one side of the mounting block via a plurality of bolts, and a plurality of threaded grooves are provided on the mounting block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. After the hook moves down to a specific position, manually rotate the rotating ring and the hook relative to each other, then hang the spare cable on the hook, and remove the external force applied to the rotating ring. Under the elastic force of the torsion spring, the limit plate will rotate to the initial position. At this time, the surface of the limit plate also fits the surface of the spare cable. The friction between the limit plate and the cable is large, which can effectively prevent the cable from detaching from the hook. After that, the servo motor drives the winding roller to rotate in the opposite direction, and the steel cable can be reeled up. In this process, the spare cable can be lifted up, and the cable can be effectively prevented from falling off during the process of lifting the cable up. The operation is simple and quick, and there is no need for maintenance personnel to manually lift the cable up with ropes. It is safer, the workload of maintenance personnel is small, the time consumption is short, and the maintenance and replacement efficiency of the cable is high.

[0019] 2. Move the arc groove on the fixing plate toward the direction close to the surface of one side of the pole until the surface of the arc pad is in close contact with the surface of the pole, then move the clamp block toward the other side of the pole until the arc pad on the clamp block is in close contact with the other side of the pole, and then press the two sliding bars. After the rough surface of each clamp plate is in close contact with the surface of the pole, turn the handle, and the rotating plate and the two fixed shafts will move toward the direction close to the clamp block. Each fixed shaft will be engaged with the corresponding slot, thereby preventing the clamp plate from being separated from the surface of the pole. At this time, each limit rod is engaged with the groove. Under the joint limiting action of the clamp block, the fixing plate and the two clamp plates, the fixed shell can be firmly clamped on the pole, which is convenient for adjusting the height and position of the device and is conducive to the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front structural schematic diagram of a line lifting device for a distribution network rack proposed by the present invention;

[0021] Figure 2 A schematic diagram of the internal structure of the back side of a line lifting device for a distribution grid proposed by the present invention;

[0022] Figure 3 A schematic diagram of the top view of the structure of a line lifting device for a distribution network rack proposed by the present invention;

[0023] Figure 4 It is a schematic diagram of the side structure of the clamping block and the fixing plate in the present invention;

[0024] Figure 5 It is a schematic diagram of a top view and a partial cross-sectional structure of a clamping block and a fixing plate in the present invention;

[0025] Figure 6 It is a schematic diagram of the partial front structure of the hook and the fixing frame in the present invention;

[0026] Figure 7 for Figure 5Schematic diagram of the locally enlarged structure of A in the middle.

[0027] In the figure: 1 fixed shell, 2 rectangular rod, 3 clamping plate, 4 clamping block, 5 moving bar, 6 fixed plate, 7 steel cable, 8 torsion spring, 9 rotating ring, 10 limit plate, 11 mounting block, 12 hook, 13 winding roller, 14 threaded sleeve, 15 bolt, 16 cover plate, 17 ear plate, 18 rotating plate, 19 threaded rod, 20 fixed frame, 21 slot, 22 slot, 23 slide rod, 24 through slot, 25 rectangular slot, 26 arc pad, 27 fixed shaft, 28 limit rod, 29 groove, 30 handle, 31 first spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-Figure 7 A line lifting device for a distribution network frame includes a fixed shell 1, a fixed plate 6 is fixedly connected to one side surface of the fixed shell 1, two rectangular rods 2 are slidably connected to the fixed plate 6, the two rectangular rods 2 are connected by a clamping block 4, and arc grooves are provided on the fixed plate 6 and the clamping block 4. A rotating assembly is arranged inside the fixed shell 1, and the rotating assembly includes a servo motor fixedly mounted on the inner wall of the fixed shell 1, and a winding roller 13 is fixedly connected to the driving end of the servo motor, and the winding roller 13 is connected to the mounting block 11 through a steel cable 7.

[0030] A hook 12 is provided below the mounting block 11, and a limiting assembly is provided on the hook 12. The limiting assembly includes a rotating ring 9 rotatably installed on the hook 12, a torsion spring 8 is sleeved on the hook 12, one end of the torsion spring 8 is fixedly connected to the hook 12, and the other end of the torsion spring 8 is fixedly connected to the rotating ring 9, a limiting plate 10 is fixedly connected to the rotating ring 9, a slot 21 for connecting the hook 12 is provided on the limiting plate 10, and a rubber pad is fixedly connected to the inner wall of the slot 21.

[0031] The inner wall of each arc groove is fixedly connected with an arc pad 26, and the arc pad 26 is set to a rubber material. When the arc pad 26 made of rubber material fits the surface of the pole, the friction force when in contact with the pole can be increased. When the arc pads 26 on the fixed plate 6 and the clamping block 4 are always in close contact with the two side surfaces of the pole, the fixed shell 1 can be clamped on the pole. Two rectangular grooves 25 for connecting the rectangular rod 2 are provided on the fixed plate 6, and a through groove 24 is provided in each rectangular rod 2. A sliding rod 23 is slidably connected in each through groove 24, and one end of the sliding rod 23 is fixedly connected to a clamping plate 3, and the surface of the clamping plate 3 is provided with anti-slip grooves. A first spring 31 is sleeved on each sliding rod 23, and one end of the first spring 31 is fixedly connected to the sliding rod 23, and the other end of the first spring 31 is fixedly connected to the corresponding rectangular rod 2.

[0032] Each slide bar 23 is fixedly connected to a limit rod 28 with an L-shaped cross section, and each limit rod 28 is slidably installed in the corresponding through groove 24. A groove 29 is provided on one side inner wall of each rectangular groove 25 for connecting the limit rod 28. The two side surfaces of the clamping block 4 are fixedly connected to an ear plate 17, and each ear plate 17 is slidably connected to a fixed shaft 27. Each slide bar 23 is fixedly connected to a moving bar 5 with an L-shaped cross section at one end away from the clamping plate 3. A groove 22 is provided on one side surface of each moving bar 5 for connecting the corresponding fixed shaft 27. Pressing the two slide bars 23 at the same time causes them to slide relative to the corresponding rectangular rod 2, and the first spring 31 is deformed at the same time. After each slide bar 23 moves in the direction close to the pole, the rough surface of each clamping plate 3 will be tightly attached to the surface of the pole. After each limit rod 28 moves with the slide bar 23, one end of each limit rod 28 will be engaged with the corresponding groove 29, which can prevent the clamping block 4 and the fixed plate 6 from moving relative to each other.

[0033] A threaded rod 19 is threadedly connected to one side of the clamping block 4, and a handle 30 is fixedly connected to one end of the threaded rod 19. A rotating plate 18 is rotatably connected to the threaded rod 19, and each fixed shaft 27 is fixedly connected to the rotating plate 18. After the surface of each clamping plate 3 is in close contact with the surface of the pole, the handle 30 is rotated. Under the transmission action of the handle 30, the threaded rod 19 is threadedly connected to the clamping block 4 at the same time. Since each fixed shaft 27 is fixedly connected to the rotating plate 18, and the fixed shaft 27 is slidably arranged on the corresponding ear plate 17, the rotating plate 18 can only rotate relative to the threaded rod 19, and cannot slide relative to the threaded rod 19 along the direction of the threaded rod 19. During the rotation of the threaded rod 19, the rotating plate 18 and the two fixed shafts 27 will move in the direction close to the clamping block 4. After each fixed shaft 27 moves, one end thereof will be engaged with the corresponding slot 22 on the moving bar 5, thereby preventing the clamping plate 3 from being separated from the surface of the pole.

[0034] The lower surface of the mounting block 11 is fixedly connected with a fixing frame 20, and a through hole for connecting the hook 12 is opened on the lower surface of the fixing frame 20. A threaded sleeve 14 is fixedly connected inside the fixing frame 20. The hook 12 and the threaded sleeve 14 are threadedly connected. The upper end of the hook 12 passes through the through hole and is threadedly connected to a circular groove (not shown) with a thread in the middle of the threaded sleeve 14. The hook 12 and the fixing frame 20 can be firmly installed together. When the hook 12 is damaged due to long-term use, it is convenient to quickly replace the hook 12. The mounting block A cavity is provided inside 11, and a cover plate 16 is connected to one side of the mounting block 11 through multiple bolts 15. Multiple threaded grooves are provided on the mounting block 11. The gravity block is placed inside the cavity, and then the cavity is blocked with the cover plate 16. Then, each bolt 15 is rotated so that one end thereof passes through the cover plate 16 and is threadedly connected to the corresponding threaded groove, thereby preventing the cover plate 16 from detaching from the mounting block 11. Under the action of the gravity of the gravity block, the amplitude of the swing of the mounting block 11 due to wind force can be reduced during the process of retracting and releasing the steel cable 7.

[0035] The present invention is used when the fixed shell 1 is first moved to the top of the pole (not shown), and then the arc groove on the fixed plate 6 is moved in the direction close to the surface of one side of the pole until the surface of the arc pad 26 is in close contact with the surface of the pole, and then the clamp block 4 is moved toward the other side surface of the pole, and the two rectangular rods 2 fixedly connected to the clamp block 4 will move together, and one end of each rectangular rod 2 will be inserted into the corresponding rectangular groove 25 until the arc pad 26 on the clamp block 4 is in close contact with the other side surface of the pole, and then the two sliding bars 23 are pressed at the same time to make them slide relative to the corresponding rectangular rod 2, and the first spring 31 is deformed at the same time. After each sliding bar 23 moves in the direction close to the pole, the rough surface of each clamp plate 3 will be in close contact with the surface of the pole. At this time, each clamp plate 3 and the arc pad 26 will be in close contact with the side surfaces of the pole respectively, and after each limit rod 28 moves with the sliding bar 23, one end of each limit rod 28 will be engaged with the corresponding groove 29.

[0036] After that, the two clamping plates 3 are kept in close contact with the surface of the pole at all times, and the handle 30 is turned. Under the transmission action of the handle 30, the threaded rod 19 is threadedly connected with the clamping block 4 at the same time. Since each fixed shaft 27 is fixedly connected with the rotating plate 18, and the fixed shaft 27 is slidably arranged on the corresponding ear plate 17, the rotating plate 18 can only rotate relative to the threaded rod 19, and cannot slide relative to the threaded rod 19 along the direction of the threaded rod 19. During the rotation of the threaded rod 19, the rotating plate 18 and the two fixed shafts 27 will move closer to the clamping block. 4, one end of each fixed shaft 27 will be engaged with the corresponding slot 22 on the moving bar 5 after moving, so as to prevent the clamping plate 3 from being separated from the surface of the pole. At this time, one end of each limiting rod 28 is engaged with the groove 29, which can effectively prevent the rectangular rod 2 and the fixing plate 6 from sliding relative to each other, that is, to prevent the clamping block 4 and the fixing plate 6 from moving relative to each other. Under the joint limiting action of the clamping block 4, the fixing plate 6 and the two clamping plates 3, the fixed housing 1 can be firmly clamped on the pole, which is convenient for adjusting the height and position of the device and is conducive to the use of the device.

[0037] The servo motor drives the winding roller 13 to rotate, and the steel cable 7 wound on the winding roller 13 will be unwound. The mounting block 11 fixedly connected at one end of the steel cable 7 will move downward under the action of gravity, thereby driving the fixed frame 20 and the hook 12 to move downward together, until the hook 12 moves down to a specific position, and then the rotating ring 9 and the hook 12 are manually rotated relative to each other, and the torsion spring 8 is deformed at the same time. After the limit plate 10 is rotated, it will be separated from the surface of the hook 12, and then the spare cable is hung on the hook 12, and the external force applied to the rotating ring 9 is removed. Under the elastic force of the torsion spring 8, the limit plate 10 will rotate to the initial position, that is, the start The rubber pad on the inner wall of the groove 21 is in close contact with the surface of the hook 12. At this time, the surface of the limit plate 10 is also in contact with the surface of the spare cable. The friction between the limit plate 10 and the cable is relatively large, which can effectively prevent the cable from detaching from the hook 12. After that, when the servo motor drives the winding roller 13 to rotate in the opposite direction, the steel cable 7 can be reeled in. In this process, the spare cable can be lifted upward, and the cable can be effectively prevented from falling off during the process of lifting the cable upward. The operation is simple and quick, and there is no need for maintenance personnel to manually lift the cable upward with a rope. The safety is higher, the workload of maintenance personnel is smaller, the time consumption is shorter, and the maintenance and replacement efficiency of the cable is higher.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A line lifting device for a power distribution network, comprising a fixed housing (1), characterized in that: A fixed plate (6) is fixedly connected to one side surface of the fixed housing (1), two rectangular rods (2) are slidably connected to the fixed plate (6), the two rectangular rods (2) are connected via a clamping block (4), and arc grooves are provided on the fixed plate (6) and the clamping block (4); A rotating assembly is arranged inside the fixed housing (1), the rotating assembly comprising a servo motor fixedly mounted on the inner wall of the fixed housing (1), a driving end of the servo motor fixedly connected to a winding roller (13), and the winding roller (13) is connected to a mounting block (11) via a steel cable (7); A hook (12) is arranged below the mounting block (11), and a limit assembly is arranged on the hook (12), the limit assembly comprises a rotating ring (9) rotatably mounted on the hook (12), a torsion spring (8) is sleeved on the hook (12), one end of the torsion spring (8) is fixedly connected to the hook (12), and the other end of the torsion spring (8) is fixedly connected to the rotating ring (9), a limit plate (10) is fixedly connected to the rotating ring (9), a slot (21) for connecting the hook (12) is provided on the limit plate (10), and a rubber pad is fixedly connected to the inner wall of the slot (21).

2. A line lifting device for a distribution network according to claim 1, characterized in that: The inner wall of each arc-shaped groove is fixedly connected with an arc-shaped pad (26), and the arc-shaped pad (26) is made of rubber material.

3. A line lifting device for a distribution network according to claim 1, characterized in that: The fixing plate (6) is provided with two rectangular grooves (25) for connecting the rectangular rods (2), each of the rectangular rods (2) is provided with a through groove (24), each of the through grooves (24) is slidably connected with a sliding rod (23), one end of the sliding rod (23) is fixedly connected with a clamping plate (3), and the surface of the clamping plate (3) is provided with anti-slip grooves.

4. A line lifting device for a power distribution network according to claim 3, characterized in that: A first spring (31) is sleeved on each of the slide bars (23); one end of the first spring (31) is fixedly connected to the slide bar (23); and the other end of the first spring (31) is fixedly connected to the corresponding rectangular bar (2).

5. The line lifting device of a distribution network rack according to claim 3, characterized in that: A limiting rod (28) having an L-shaped cross section is fixedly connected to each of the sliding rods (23); each of the limiting rods (28) is slidably installed in the corresponding through groove (24); and a groove (29) for connecting the limiting rod (28) is provided on an inner wall of one side of each of the rectangular grooves (25).

6. A line lifting device for a power distribution network according to claim 3, characterized in that: Both side surfaces of the clamping block (4) are fixedly connected with ear plates (17), each of the ear plates (17) is slidably connected with a fixed shaft (27), and one end of each sliding rod (23) away from the clamping plate (3) is fixedly connected with a moving bar (5) with an L-shaped cross section, and a groove (22) for connecting to the corresponding fixed shaft (27) is provided on one side surface of each moving bar (5).

7. A line lifting device for a power distribution network according to claim 6, characterized in that: A threaded rod (19) is threadedly connected to one side of the clamping block (4); a handle (30) is fixedly connected to one end of the threaded rod (19); a rotating plate (18) is rotatably connected to the threaded rod (19); and each of the fixed shafts (27) is fixedly connected to the rotating plate (18).

8. The line lifting device of a power distribution network according to claim 1, characterized in that: A fixing frame (20) is fixedly connected to the lower surface of the mounting block (11); a through hole for connecting the hook (12) is provided on the lower surface of the fixing frame (20); a threaded sleeve (14) is fixedly connected inside the fixing frame (20); the hook (12) and the threaded sleeve (14) are threadedly connected.

9. A line lifting device for a power distribution network according to claim 8, characterized in that: A cavity is provided inside the mounting block (11); one side of the mounting block (11) is connected to a cover plate (16) via a plurality of bolts (15); and a plurality of threaded grooves are provided on the mounting block (11).

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