An automatic lifting device for power transmission line tower and its application method

Abstract

The application discloses an automatic lifting device for a power transmission line tower, which mainly comprises a main support, an electric winch system, a guide rope support and an insulating rope; the main support is vertically arranged; the electric winch system comprises a disc motor, a gear reduction mechanism and a winch, the disc motor and the gear reduction mechanism are horizontally arranged on one side of the bottom of the main support, the winch is arranged on the other side of the main support, the rotating shaft output end of the disc motor is connected with the gear reduction mechanism, and the output end of the gear reduction mechanism is connected with the winch; a cushion is connected with the middle part of the main support; the lower end of the guide rope support is detachably connected with the upper end of the main support, and a guide rope wheel is installed on the top; after the insulating rope is wound on the rotating shaft of the winch, one end of the insulating rope naturally drops down, and the other end of the insulating rope is fixed to the high place of the tower after being wound up through the guide rope wheel; the disc motor works to drive the winch to rotate through the gear reduction mechanism, so that the insulating rope is retracted and released, and the retraction and release of the insulating rope realize the lifting of the device. The device has the advantages of compact structure, convenient installation, convenient storage and transportation.

Description

Technical Field

[0001] This invention belongs to the field of power transmission line operation and maintenance, specifically an automatic lifting device for power transmission line towers and its application method. Background Technology

[0002] In the power industry, transmission towers are one of the basic carriers. By using transmission towers to lay high-voltage cables, long-distance power transmission can be achieved. However, transmission lines are affected by the natural environment, and phenomena such as corrosion and broken strands can occur, requiring regular maintenance. Otherwise, it will affect the normal life of nearby residents. Before maintenance, manual climbing of the transmission towers is usually carried out to inspect the lines. During the climbing process, there is a risk of falling, which poses a certain danger. Moreover, in winter, when the towers are covered with ice, the speed of manual climbing is reduced to ensure safety, and the work efficiency is greatly reduced.

[0003] Patent 202123333788.2 discloses a highly stable transmission line tower lifting device, such as... Figure 1 As shown, its structure includes a fixed suspension beam 1, a bracket 2, a dual-shaft drive motor 3, a coupling 4, a pulley 5, a central shaft 6, a ring 7, a connecting frame 8, a shaft seat 9, a lifting rope 10, a lifting ring 11, a bolt hook 12, and a lifting chamber 13. The dual-shaft drive motor 3 is located at the bottom center of the fixed suspension beam 1, within the bracket 2, which is fixedly connected to the fixed suspension beam 1. The ring 7 is located on both sides of the dual-shaft drive motor 3, and is fixedly connected to the fixed suspension beam 1 via the connecting frame. A pulley 5 is located within the ring 7, with a central shaft 6 at both ends of the pulley 5. A lifting rope 10 is wound around the middle of the pulley 5, with a lifting ring 11 fixedly attached to one end of the lifting rope 10. A bolt hook 12 is fixedly attached to the top of the lifting chamber 13, and this bolt hook 12 is connected to the lifting ring 11. During use, the dual-shaft drive motor 3 synchronously drives the pulleys 5 on both sides to rotate in opposite directions. At this time, the lifting rope 10 drives the lifting chamber 13 to rise and fall, realizing regional maintenance. The two sets of lifting ropes 10 operate synchronously, and under the action of the ring 7, the sway rate is low and the stability effect is good. Moreover, the overall structure is relatively simple and the connection method is easy, which will not cause problems with difficult assembly.

[0004] However, before using this device, the entire structure except for the lifting chamber needs to be lifted to a high position on the tower for installation and fixation, which presents an inconvenience for installation. Furthermore, if a malfunction occurs during the lifting process, there are no braking protection measures, posing a safety hazard. The device also suffers from a non-compact structure and inconvenient transportation. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic lifting device with a compact structure that is easy to install on iron towers and its application method.

[0006] The automatic lifting device for the power transmission line tower provided by the application mainly comprises a main support, an electric winch system, a guide rope support and an insulating rope.

[0007] In an embodiment of the device, the gear reduction mechanism is a planetary gear mechanism.

[0008] In an embodiment of the device, the middle part of the main support is connected with a guide rope block, the lower part of the guide rope block is inserted into the rope groove of the winch, and the upper part is provided with a rope sliding groove.

[0009] In an embodiment of the device, the top of the main support is provided with a pair of anti-friction guide wheels above the guide rope block.

[0010] In an embodiment of the device, the guide rope support comprises two segments of support bodies connected in sequence, the lower end of the lower support body is connected to the top of the main support above the anti-friction guide wheels, and the cross-sectional shape of the two segments of support bodies is a U-shaped side opening.

[0011] In an embodiment of the device, the opening side of the support body is embedded with a rubber sealing plate, and the insulating rope passes through the support body.

[0012] In an embodiment of the device, the lifting device further comprises a brake device, the brake device comprises a hand brake mechanism and an electromagnetic brake, the electromagnetic brake is installed at the input end of the rotating shaft of the disc motor, the handle of the hand brake mechanism is connected to one end of the speed regulating handle, and the pull wire is connected with the electromagnetic brake.

[0013] In an embodiment of the device, the disc motor is powered by a lithium battery, the lithium battery is connected with a circuit board through a plug-in structure after being packaged, and the circuit board is connected with a heat sink.

[0014] In an embodiment of the device, the heat sink and the end cover of the disc motor are connected through a horizontal pull rod and a fastener, the lithium battery, the circuit board, the heat sink and the electromagnetic brake are covered by a cover body, and the cover body and the shell of the disc motor are connected through a fastener.

[0015] The method using the device comprises the following steps:

[0016] (1) fixing the upper end of the insulating rope on which the device is installed to the high position of the iron tower;

[0017] (2) powering the device to release the rotating shaft of the disc motor by the hand brake mechanism;

[0018] (3) the operator sits on the cushion;

[0019] (4) the disc motor works in the forward direction to make the capstan rotate in the forward direction to shorten the insulating rope, so that the device rises to the specified height;

[0020] (5) when the device descends after the operator completes the work, the disc motor works in the reverse direction to make the capstan rotate in the reverse direction, so that the device descends;

[0021] (6) if the disc motor fails during the lifting process, the rotating shaft of the disc motor is locked by the hand brake mechanism, and the operator descends by the weight and the operation of the hand brake mechanism.

[0022] The application adopts the vertically arranged main support to install the horizontal electric capstan system, connects the guide rope support to the upper end of the main support, realizes the lifting of the device by the winding and unwinding of the insulating rope through the electric driving device, fixes the insulating rope to the high position of the iron tower, and is convenient to install. The operator sits on the cushion on one side of the middle part of the main support to rise and descend, and the guide rope support can be used as a handrail. The whole device has compact structure and safe rising and descending process of the operator. The detachable connection between the guide rope support and the main support makes the whole device occupy small space during storage / transportation, and is convenient to store / transport. After use, the insulating rope only needs to be removed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the axial structure of one embodiment of the application.

[0024] Figure 2 It is a schematic view of the axial structure of another embodiment of the application.

[0025] Figure 3 It is Figure 1 It is a schematic view of the structure after removing the peripheral structure.

[0026] Figure 4 It is a schematic view of the axial structure of the main support in the embodiment.

[0027] Figure 5 It is a schematic view of the embodiment in the storage / transportation state. DETAILED DESCRIPTION

[0028] As Figures 1 to 4As shown, the automatic lifting device for power transmission line tower disclosed in the embodiment mainly comprises a main support 1, an electric winch system 2, a guide rope support 3, an insulating rope and a brake device.

[0029] The main support 1 is vertically arranged, the electric winch system 2 is installed at the bottom of the main support 1, a seat 4 is connected to one side of the middle part of the main support 1, and the guide rope support 3 is connected to the top of the other side of the main support 1.

[0030] The electric winch system 2 comprises a disc motor 21, a gear reduction mechanism 22 and a winch 23, the disc motor 21 and the gear reduction mechanism 22 are horizontally arranged at the right side of the bottom of the main support 1, the winch 23 is arranged at the left side of the main support 1, the output end of the rotating shaft of the disc motor 21 is connected to the gear reduction mechanism 22, and the output end of the gear reduction mechanism is connected to the winch 23.

[0031] The brake device comprises a hand brake mechanism 5 and an electromagnetic brake 6, the electromagnetic brake is an off-the-shelf part, and the BFK458.06 model of Lenz electromagnetic brake is adopted.

[0032] The input end of the rotating shaft of the disc motor 21 is provided with an end cover 24, and the extending end of the rotating shaft of the disc motor 21 is connected to the electromagnetic brake 6.

[0033] The electric winch system is powered by a lithium battery 25, the lithium battery is connected to a circuit board 26 through a plug-in structure after being packaged, and the outer side of the circuit board 26 is connected to a heat sink 27 through a bolt.

[0034] The input end of the rotating shaft of the disc motor 21 is bolted to an axial bolt, and the axial bolt penetrates through the electromagnetic brake 6 and the heat sink 27.

[0035] The heat sink 27 and the end cover 24 are connected through a horizontal pull rod and a bolt.

[0036] The disc motor 21 is provided with a shell 28, and the end cover 24 is located in the shell.

[0037] The electromagnetic brake 6, the circuit board 27, the heat sink 27 and the lithium battery are packaged as a whole, which are covered by a cover 29 with an open front end, the cover is fixedly connected to the shell 28 through a bolt, and the packaging shell of the lithium battery and the cover are connected through a clamping assembly mode, so as to facilitate the replacement of the lithium battery.

[0038] The middle part of the main support 1 is connected to a guide rope block 7, the lower part of the guide rope block is inserted into a rope groove of the winch 23, and the upper part is provided with a rope sliding groove 71.

[0039] A pair of anti-friction guide wheels 8 are arranged above the guide rope block 7 at the top of the main support 1.

[0040] The left side of the base of the main support 1 is connected to a cover 11 which can be opened and closed to cover the winch.

[0041] The guide rope support 3 comprises two sections of frame bodies connected in series, the lower end of the lower frame body is connected to the top of the main body support 1 above the anti-abrasion guide wheel 8, the cross section of the two sections of frame bodies is in the shape of an open U, the upper end of the upper frame body is installed with the guide rope wheel 10, and a blocking rod is arranged on the upper frame body corresponding to the outer side of the guide rope wheel. The open side of the frame body is embedded with a rubber sealing plate 9. Before the installation of the insulating rope, the rubber sealing plate 9 is not installed.

[0042] The control box 12 and the speed regulating handle 13 are installed on the top of the lower frame body, the handle 51 of the hand brake mechanism 5 is connected to one end of the speed regulating handle 13, and the operating mechanism 52 is installed on the handle, and the operating mechanism is connected with the electromagnetic brake 6 through the pull wire 53.

[0043] When the lifting device is installed on the iron tower, the insulating rope is wound on the rotating shaft of the winch 23, one end of the insulating rope naturally drops down, the other end of the insulating rope is guided along the rope sliding groove on the guide rope block 7, and then the insulating rope is guided upwards through the anti-abrasion guide wheel 8, and finally the insulating rope is fixed to the high position of the iron tower through the guide rope wheel 10 at the upper end of the guide rope support 3. The insulating rope is not shown in the figure, and the rubber sealing plate is fixed after the insulating rope is fixed.

[0044] The use process of the device is as follows:

[0045] (1) Power on the device to make the electromagnetic brake loosen the rotating shaft of the disc motor;

[0046] (2) The operator rides on the cushion;

[0047] (3) Make the disc motor work in the forward direction, and the winch rotates in the forward direction to shorten the insulating rope, so that the device rises to the specified height;

[0048] (4) When the device descends after the operator completes the work, make the disc motor work in the reverse direction, and the winch rotates in the reverse direction, so that the device descends.

[0049] If the disc motor fails during lifting, the electromagnetic brake is made to tightly hold the rotating shaft of the disc motor through the operation of the hand brake mechanism, and the operator descends through the cooperation of the self weight and the operation of the hand brake mechanism.

[0050] The guide rope support and the main body support of the device are connected through bolts, the two sections of frame bodies of the guide rope support are connected through bolts, the electric drive system is a compact horizontal structure, the cushion is arranged above the electric drive system, when the device is stored and transported, the guide rope support can be folded and placed on the compact whole of the main body support and the electric drive device, so that the device is small in size, as shown in the figure, and the storage and transportation are convenient. Figure 5 ​

Claims

1. An automatic lifting device for a power transmission line tower, characterized by: Mainly include main support, electric winch system, guide rope support and insulating rope; The main support is vertically arranged; The electric winch system comprises a disc motor, a gear reduction mechanism and a winch, the disc motor and the gear reduction mechanism are horizontally arranged on one side of the bottom of the main support, the winch is arranged on the other side of the main support, the output end of the rotating shaft of the disc motor is connected with the gear reduction mechanism, and the output end of the gear reduction mechanism is connected with the winch; The main support is vertically arranged; The main support is vertically arranged; The insulating rope is wound on the rotating shaft of the winch, one end of the insulating rope is naturally lowered, the other end of the insulating rope is wound upwards through the guide rope wheel and fixed on the high place of the iron tower, the disc motor is operated to drive the winch to rotate through the gear reduction mechanism, so that the insulating rope is retracted or extended, and the retraction or extension of the insulating rope realizes the lifting of the device; The main support is vertically arranged; The main support is vertically arranged; 2. The automatic lifting device for the electric transmission line tower according to claim 1, wherein: The device further comprises a brake device, the brake device comprises a hand brake mechanism and an electromagnetic brake, the electromagnetic brake is installed on the input end of the rotating shaft of the disc motor, the handle of the hand brake mechanism is connected with one end of the speed regulating handle, and the pull wire is connected with the electromagnetic brake.

3. The automatic lifting device for the electric transmission line tower according to claim 1, wherein: The gear reduction mechanism is a planetary gear mechanism.

4. The automatic lifting device for power transmission line tower as claimed in claim 3 wherein: The top of the main support is provided with a pair of anti-friction guide wheels above the upper part of the guide rope block.

5. The automatic lifting device for the electric transmission line tower according to claim 4, wherein: The lower end of the lower segment frame body is connected to the top of the main support above the anti-friction guide wheels, and the cross-sectional shape of the upper segment frame body and the lower segment frame body is a U-shaped side opening.

6. The automatic lifting device for the electric transmission line tower according to claim 5, wherein: The opening sides of the upper segment frame body and the lower segment frame body are embedded with rubber sealing plates, and the insulating rope passes through the openings.

7. The automatic lifting device for the electric transmission line tower according to claim 6, wherein: The disc motor is powered by a lithium battery, the lithium battery is packaged and connected with a circuit board through a plug-in structure, and the circuit board is connected with a heat sink. The heat sink and the end cover of the disc motor are connected through a horizontal pull rod and a fastener, the lithium battery, the circuit board and the heat sink and the electromagnetic brake are covered by a cover body, and the cover body and the shell of the disc motor are connected through a fastener.

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