Portable electric winching machine for power transmission and distribution line maintenance

Abstract

The utility model relates to the field of equipment for electric power engineering, in particular to a portable electric winching machine for overhauling a power transmission and distribution line, which comprises a control unit, a power supply unit, a first positioning plate and a second positioning plate, the first positioning plate and the second positioning plate are arranged in parallel, and the control unit is in wireless communication connection with an external remote controller; a rope guide wheel which is used for winding an insulating rope and can drive the insulating rope to rotate and a motor which is in transmission connection with the rope guide wheel through a speed reducer are rotationally mounted between the first positioning plate and the second positioning plate, and the motor is connected with a control unit; the rope guide wheel is sleeved with a rope guide frame, and a spiral groove used for containing an insulating rope wound on the rope guide wheel is formed in the inner wall of the rope guide frame. One end of the rope guide frame is provided with a rope inlet, and the other end is provided with a rope outlet; the first positioning plate, the second positioning plate, the rope guide wheel, a shell of the speed reducer and the rope guide frame are all made of light materials. The portable electric winching machine for the maintenance of the power transmission and distribution line, provided by the utility model, is relatively light and relatively high in safety.

Description

Technical Field

[0001] The utility model relates to the field of equipment for power engineering, and particularly relates to a portable electric winch for overhauling transmission and distribution lines. Background Art

[0002] At present in China, with the rapid development of the power industry and the expansion of the power grid scale, the overhaul of transmission and distribution lines (hereinafter referred to as transmission overhaul) has become increasingly important and is a key link to ensure the stable operation of the power system.

[0003] In the transmission overhaul work, a winch is needed for traction, hoisting and other operations. Although the traditional winch has powerful functions, due to its large volume and heavy weight, it appears bulky and inconvenient to use in the complex environment of transmission lines. Especially in specific environments such as mountains or high altitudes, these traditional devices are even more difficult to play a role, seriously affecting the efficiency and safety of emergency overhaul.

[0004] Considering the particularity of the temporary on-site nature of the transmission overhaul work, a gasoline portable winch with a small volume and light weight has been developed and is welcomed by on-site operators. However, the gasoline portable winch can often only achieve one-way hoisting operation. When lowering, the speed of the lowered object is mainly controlled by manually pulling the insulating rope, which poses an unignorable safety risk in actual operation and limits its practical application and further popularization in transmission overhaul. At the same time, its volume and weight are only improved compared with the traditional winch. Generally speaking, it is still not light enough, relatively bulky, troublesome to install and carry, and its portability is still not very high.

[0005] Therefore, the existing winches have problems of insufficient lightness, low portability and low safety. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the above-mentioned disadvantages of the prior art and provide a portable electric winch for overhauling transmission and distribution lines that is relatively light and has high safety.

[0007] To solve the above technical problems, the portable electric winch for maintenance of power transmission and distribution lines provided by the utility model includes a control unit, a power supply unit for supplying power to all electrical components, and a first positioning plate and a second positioning plate arranged in parallel. Connecting pieces for connecting with power transmission towers are arranged on the first positioning plate and the second positioning plate. The control unit is wirelessly communicatively connected with an external remote controller; a guide pulley for winding an insulating rope and capable of driving the insulating rope to rotate is rotatably installed between the first positioning plate and the second positioning plate, and a motor transmission-connected with the guide pulley through a speed reducer is connected with the control unit; a guide rope frame is sleeved outside the guide pulley, and a spiral groove for accommodating the insulating rope wound on the guide pulley is formed on the inner wall of the guide rope frame; a rope inlet is formed at one end of the guide rope frame, and a rope outlet is formed at the other end; the first positioning plate, the second positioning plate, the guide pulley, the outer shell of the speed reducer and the guide rope frame are all made of light materials. The utility model uses a motor as a power source to drive the guide pulley to rotate, and through the cooperation of the guide pulley and the guide rope frame, the insulating rope is wound and rotated on the guide rope frame to perform work such as traction or hoisting. The motor can drive the guide pulley to rotate forward or backward, so that the lowering speed of the insulating rope during the lowering process can also be controlled, reducing the probability of sudden acceleration and falling of the object below during the lowering process, and greatly improving the safety during the lowering process. After the winch is installed on the power transmission tower through the connecting piece, the winch can be controlled through the remote controller, without the need for close operation beside, reducing the probability of injury to operators and improving safety. At the same time, the main components of the winch are all made of light materials, the overall quality is light, and the volume of the motor is also smaller compared with gasoline or diesel driving devices. Therefore, the whole winch is relatively light and small in size, very portable, and very suitable for use in the maintenance of power transmission and distribution lines.

[0008] As a further improvement of the utility model, the connecting piece is a U-shaped hanging bracket, which can be tied to the power transmission tower through a connecting rope, and the installation process is relatively simple.

[0009] As a further improvement of the utility model, the connecting piece includes a shaft vertically installed between the first positioning plate and the second positioning plate and a U-shaped connecting ring installed on the shaft. The U-shaped connecting ring can be installed on the power transmission tower through a chamfered 90° elbow square pipe, a threaded rod, a nut and a clamping block, and the connection is relatively firm.

[0010] As a further improvement of the utility model, a plurality of protruding vertical teeth for driving the insulating rope to rotate are arranged on the surface of the guide pulley. The vertical teeth can increase the friction force on the surface of the guide pulley and cooperate with the guide rope frame to drive the insulating rope to rotate.

[0011] As a further improvement of the utility model, the speed reducer is a gear speed reducer, with a compact structure, capable of meeting the needs of high torque output in a small space, and capable of further reducing the volume of the whole winch.

[0012] As a further improvement of the present utility model, the motor is a DC brushless motor. The overhaul operation of the transmission line is basically carried out outdoors. The DC brushed motor needs to replace the carbon brush regularly, which is inconvenient to use. Therefore, compared with the DC brushed motor, the DC brushless motor has a longer service life, is easier to maintain, and is more suitable for the overhaul operation of the transmission line.

[0013] As a further improvement of the present utility model, an infrared ranging sensor connected to the control unit is installed outside the rope guide frame, and the infrared ranging sensor is located above the rope inlet. The infrared ranging sensor can emit infrared rays and has no reaction when the insulating rope enters the rope inlet normally. However, when there is a knot or other foreign object on the insulating rope, the infrared rays emitted by the infrared ranging sensor will be reflected back by the knot or other foreign object. After the control unit receives this information, it will control the motor to stop working to prevent large foreign objects from entering the rope inlet, effectively improving the operation safety.

[0014] As a further improvement of the present utility model, at least one guide wheel for guiding the insulating rope passing through the rope outlet is provided on the rope guide frame; guide rollers 9 for guiding the insulating rope into the rope inlet are fixedly installed on the first positioning plate and the second positioning plate. The guide wheel and the guide roller 9 can guide the insulating rope, making it simpler for the insulating rope to enter and exit the winch.

[0015] As a further improvement of the present utility model, the control unit includes a control board and a motor driver. The control board is provided with a motor drive signal module for sending signals to the motor driver, a voltage detection module for detecting the voltage of the power supply unit, and a first wireless communication module. When the voltage of the power supply unit is too low, the motor torque is insufficient, and long-term operation will cause the motor to burn out. The voltage detection module can monitor the voltage and current of the power supply unit in real time and transmit the information to the control board. When the voltage of the power supply unit is lower than the preset value, the control board will turn off the motor to prevent the motor from burning out, playing a protective role for the winch.

[0016] As a further improvement of the present utility model, the remote control includes buttons. The buttons include a forward rotation button, a reverse rotation button, a start button, and a stop button. The buttons are connected to an AD sampling chip, the AD sampling chip is connected to a single-chip microcomputer, and the single-chip microcomputer is connected to a second wireless communication module.

[0017] The beneficial effects of the present utility model are as follows: The portable electric winch for the maintenance of power transmission and distribution lines provided by the present utility model is relatively light and has high safety. The winch uses an electric motor as the power source. Compared with gasoline-driven parts or diesel-driven parts, the electric motor is smaller in volume and can achieve forward and reverse rotation, enabling the process of lowering objects to be carried out under the control of the electric motor, rather than relying only on human power, gravity, and inertia for the objects to fall. During high-altitude operations, the risk of accidents is greatly reduced, and the safety of the winch is improved. Moreover, the winch can be controlled by a remote controller. Therefore, except when the operator needs to work at high altitude during the installation of the winch, the operator can remotely control the winch at other times and keep a certain distance from the work site, providing a safer working environment for the operator and greatly ensuring the safety and efficiency of the power transmission line maintenance operation. At the same time, the main components of the winch are all made of lightweight materials, making the whole unit relatively light and portable. Therefore, in uneven areas such as mountains, its lightweight characteristic makes transportation and installation simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the overall structure of the present utility model from another angle;

[0020] Figure 3 is a schematic diagram of the overall structure of the present utility model with the first positioning plate hidden

[0021] Figure 4 is a schematic diagram of the installation position of the infrared ranging sensor in the present utility model;

[0022] Figure 5 is a schematic diagram of the installation position of the U-shaped connecting ring in the present utility model;

[0023] Figure 6 is a schematic diagram of the overall structure of the wire guiding frame in the present utility model;

[0024] Figure 7 is a perspective view of the overall structure of the first wire guiding frame in the present utility model;

[0025] Figure 8 is a schematic diagram of the overall structure of the first wire guiding frame and the second wire guiding frame in the present utility model;

[0026] Figure 9 is a schematic diagram of the overall structure of the third wire guiding frame in the present utility model;

[0027] Figure 10 is a schematic diagram of the installation position of the guide roller in the present utility model;

[0028] Figure 11It is the bottom view of the reduction gear housing hidden in the present utility model;

[0029] Figure 12 It is a schematic diagram of a partial structure of the reduction gear;

[0030] Figure 13 It is an exploded view of a partial structure of the reduction gear and the wire guiding pulley;

[0031] Figure 14 It is a schematic diagram of the positional relationship when the present utility model is installed on the angle iron of the power transmission tower;

[0032] Figure 15 It is Figure 14 The partial enlarged schematic diagram at position A in

[0033] Figure 16 It is the principle block diagram of the control unit;

[0034] Figure 17 It is the principle block diagram of the remote controller;

[0035] The names of the components corresponding to the marks in the above-mentioned drawings are: 1. The first positioning plate; 2. The second positioning plate;

[0036] 3. The wire guiding pulley; 301. The vertical teeth;

[0037] 4. The reduction gear; 401. The first gear; 402. The second gear; 403. The third gear; 404. The fourth gear; 405. The fifth gear; 406. The sixth gear; 407. The internal gear ring;

[0038] 5. The motor;

[0039] 6. The wire guiding frame; 601. The spiral groove; 602. The wire inlet; 603. The wire outlet; 604. The first wire guiding frame; 6041. The first side; 6042. The second side; 6043. The third side; 605. The second wire guiding frame; 606. The third wire guiding frame; 607. The guiding wheel;

[0040] 7. The infrared ranging sensor;

[0041] 8. The connecting piece; 801. The U-shaped hanging bracket; 802. The U-shaped connecting ring;

[0042] 9. The guiding roller. Specific embodiments

[0043] The following further details the specific embodiments of the present utility model in conjunction with the drawings.

[0044] The definitions of the relevant terms involved in the present utility model:

[0045] (1)Winch grinder: A labor-saving auxiliary device that has drawn relatively widespread attention both at home and abroad and is relatively widely used in construction.

[0046] (2)Reducer: An independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing, commonly used as a speed reduction transmission device between the prime mover and the working machine. It plays the role of matching the rotational speed and transmitting torque between the prime mover and the working machine or actuator.

[0047] As Figure 1 、 Figure 5 、 Figure 15 shown, the portable electric winch grinder for overhead power line maintenance provided by the present utility model includes a first positioning plate 1 and a second positioning plate 2 arranged in parallel. Connecting members 8 for connecting with the angle iron of the power tower are provided on the first positioning plate 1 and the second positioning plate 2. When the connecting member 8 is a U-shaped hanging bracket 801, the U-shaped hanging bracket 801 includes a cross plate and two vertical ends perpendicular to the cross plate. The two vertical ends are respectively bolted to the first positioning plate 1 and the second positioning plate 2. The cross plate of the U-shaped hanging bracket 801 is bolted to the chamfered part of the 90° chamfered elbow square pipe. Threaded rods are fixedly installed in the two openings of the 90° chamfered elbow square pipe. A clamping block that can be clamped on the angle iron is slidably sleeved on the threaded rod. Nuts are also installed on the threaded rods. After determining the positions of the 90° chamfered elbow square pipe and the angle iron, by continuously tightening the nuts, the angle iron can be firmly clamped between the 90° chamfered elbow square pipe and the two clamping blocks, which is relatively stable. When the connecting member 8 includes a shaft vertically installed between the first positioning plate 1 and the second positioning plate 2 and a U-shaped connecting ring 802 installed on the shaft, the U-shaped connecting ring 802 can be wound and tied to the angle iron with a connecting rope, and the installation is relatively convenient.

[0048] As Figure 2 、 Figure 3 、 Figure 11 、 Figure 12 、 Figure 13As shown, a guide rope wheel 3 for winding an insulating rope and driving the insulating rope to rotate is rotatably installed between the first positioning plate 1 and the second positioning plate 2, and a motor 5 connected to the guide rope wheel 3 through a reducer 4. The motor 5 is connected to the control unit, and the motor 5 is a DC brushless motor 5. The surface of the guide rope wheel 3 is provided with a plurality of raised vertical teeth 301 for driving the insulating rope to rotate. The reducer 4 is a gear reducer, including a first gear 401, a second gear 402, a third gear 403, and a fourth gear 404 arranged in a linear meshing sequence; a fifth gear 405 is fixedly installed at the bottom of the rotating shaft of the fourth gear 404, and the fourth gear 404 rotates coaxially with the fifth gear 405. A spline shaft is fixedly installed at one end of the guide rope wheel 3 close to the fifth gear 405, and a hub matching the spline shaft is provided on the inner wall of the fifth gear 405, and the fifth gear 405 is spline-connected with the spline shaft. The fifth gear 405 is meshed with an inner gear ring 407 fixedly mounted on the second positioning plate 2 through a plurality of sixth gears 406; a protective plate is mounted on the inner gear ring 407, and a hole is provided on the protective plate for the fourth gear 404 to pass through. The first gear 401 is mounted on the output shaft of the motor 5. The diameters of the gears in the gear reducer and the inner diameter of the inner gear ring 407 are arranged from large to small as follows: the inner diameter of the inner gear ring 407, the diameter of the third gear 403, the diameter of the fifth gear 405, the diameter of the second gear 402, the diameter of the fourth gear 404, the diameter of the first gear 401, and the diameter of the sixth gear 406.

[0049] like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, a guide rope frame 6 is provided on the outer surface of the guide rope wheel 3, and a spiral groove 601 for accommodating the insulating rope wound on the guide rope wheel 3 is provided on the inner wall of the guide rope frame 6, and the distance between the groove bottom of the spiral groove 601 and the vertical tooth 301 is slightly smaller than the diameter of the insulating rope. The guide rope frame 6 is composed of a first guide rope frame 604, a second guide rope frame 605, and a third guide rope frame 606. The first guide rope frame 604 is a triangular prism structure, and the first guide rope frame 604 includes a first side surface 6041, a second side surface 6042, and a third side surface 6043. The spiral groove 601 is provided on the first side surface 6041, the rope inlet 602 penetrates the spiral groove 601 of the second side surface 6042 and the first side surface 6041, and the rope outlet 603 penetrates the spiral groove 601 of the third side surface 6043 and the first side surface 6041.

[0050] like Figure 3 , Figure 4 , Figure 10As shown in the figure, one end of the wire guiding frame 6 is provided with a wire inlet 602, and the other end is provided with a wire outlet 603; an infrared ranging sensor 7 connected to the control unit is installed outside the wire guiding frame 6. The infrared ranging sensor 7 is located above the wire inlet 602. The model of the infrared ranging sensor 7 is E3F-DS30F2-P2, the brand is DAWEI, the sensing distance is 7 - 30 cm, and the sensing object is a non-transparent object. At least one guiding wheel 607 for guiding the insulating wire to pass through the wire outlet 603 is arranged on the wire guiding frame 6, and the guiding wheel 607 is located on the second wire guiding frame 605. Guide rollers 9 for guiding the insulating wire into the wire inlet 602 are fixedly installed on the first positioning plate 1 and the second positioning plate 2.

[0051] The outer shells of the first positioning plate 1, the second positioning plate 2, the wire guiding wheel 3, the reducer 4, and the wire guiding frame 6 are all made of light materials, and the light materials are high-strength aluminum alloy or engineering plastics.

[0052] As Figure 16 、 Figure 17 shown, the winch also includes a control unit and a power supply unit for supplying power to all electrical components. The power supply unit is a battery. The control unit is wirelessly communicatively connected to an external remote controller. The control unit includes a control board and a motor driver. A motor drive signal module for sending signals to the motor driver, a voltage detection module for detecting the voltage of the power supply unit, and a first wireless communication module are arranged on the control board. The remote controller includes buttons, and the buttons include a forward rotation button, a reverse rotation button, a start button, and a stop button. The buttons are connected to an AD sampling chip, the AD sampling chip is connected to an AT89C51 series single-chip microcomputer, and the single-chip microcomputer is connected to a second wireless communication module.

[0053] Taking the case where the connecting piece 8 is a U-shaped hanging bracket 801 as an example, the working principle of the present invention is as follows: The winch is installed on the angle iron of the power tower through the U-shaped hanging bracket 801, the beveled 90° elbow square pipe, the threaded rod, the nut, and the clamping block. The installation effect after installation is as Figure 14 shown.

[0054] One end of the insulating rope is passed around the guide roller 9 and inserted into the rope inlet 602. The start button and the forward button on the remote control are pressed to output an analog signal. The AD sampling chip converts the analog signal into a digital signal and sends it to the single-chip microcomputer. After the single-chip microcomputer recognizes it, it outputs a command and sends the command through the second wireless communication module. The control board in the control unit receives the command through the first wireless communication module. After the control board recognizes it, it sends a signal to the motor driver through the motor drive signal module. After receiving the signal, the motor driver controls the motor 5 to start, and the output shaft of the motor 5 starts to rotate, and drives the guide rope wheel 3 to rotate through the reducer 4. After the guide rope wheel 3 starts to rotate, the vertical tooth 301 drives the insulating rope to rotate in the spiral groove 601 through friction, so that it is wound on the spiral groove 601, and is guided by two guide wheels 607 and then passes through the rope outlet 603. Then the operator can pull the insulating rope extending from the rope outlet 603 to carry out traction or lifting operations. When the object is lifted to the expected position or pulled to the expected state, the stop button on the remote control can be pressed to carry out the operation. After the operation is completed, press the start button and reverse button on the remote control, the output shaft of the motor 5 starts to rotate in the opposite direction, and the insulating rope moves from the rope outlet 603 to the rope inlet 602. After the object is lowered, press the stop button of the remote control, and then remove the capstan from the angle iron.

[0055] In the above working process, when a knot or other foreign matter is about to enter the rope inlet 602, the infrared rays emitted by the infrared ranging sensor 7 will be blocked, and the infrared ranging sensor 7 will transmit the information to the control board, and the control board will control the motor 5 to stop working to protect the capstan. The voltage detection module will monitor the battery voltage in real time and transmit it to the control board. When the battery voltage is too low, the control board will control the motor 5 to stop working to protect the motor 5.

[0056] It should be noted that the present invention is not limited to the specific structure shown in the drawings in the above-mentioned embodiments, and various changes can be made thereto within the knowledge scope of ordinary technicians in this field.

Claims

1. A portable electric winch for maintenance of power transmission and distribution lines, characterized in that It includes a control unit, a power supply unit for powering all electrical components, and a first positioning plate (1) and a second positioning plate (2) arranged in parallel. Connectors (8) for connecting to a power transmission tower are provided on the first positioning plate (1) and the second positioning plate (2), and the control unit is wirelessly communicatively connected to an external remote controller; A rope guide wheel (3) for winding an insulating rope and capable of driving the insulating rope to rotate and a motor (5) drivingly connected to the rope guide wheel (3) through a speed reducer (4) are rotatably installed between the first positioning plate (1) and the second positioning plate (2), and the motor (5) is connected to the control unit; A rope guide frame (6) is sleeved outside the rope guide wheel (3), and a spiral groove (601) for accommodating the insulating rope wound on the rope guide wheel (3) is formed on the inner wall of the rope guide frame (6); One end of the rope guide frame (6) is provided with a rope inlet (602), and the other end is provided with a rope outlet (603); The first positioning plate (1), the second positioning plate (2), the rope guide wheel (3), the outer shell of the speed reducer (4), and the rope guide frame (6) are all made of light materials.

2. The portable electric winch for maintenance of power transmission and distribution lines according to claim 1, characterized in that, The connector (8) is a U-shaped hanger (801).

3. The portable electric winch for maintenance of power transmission and distribution lines according to claim 1, characterized in that, The connector (8) includes a shaft vertically installed between the first positioning plate (1) and the second positioning plate (2) and a U-shaped connecting ring (802) installed on the shaft.

4. A portable electric winch for the maintenance of power transmission and distribution lines according to any one of claims 1 to 3, characterized in that, A plurality of protruding vertical teeth (301) for driving the insulating rope to rotate are provided on the surface of the rope guide wheel (3).

5. A portable electric winch for the maintenance of power transmission and distribution lines according to any one of claims 1 to 3, characterized in that, The speed reducer (4) is a gear speed reducer.

6. A portable electric winch for the maintenance of power transmission and distribution lines according to any one of claims 1 to 3, characterized in that, The motor (5) is a DC brushless motor.

7. A portable electric winch for maintenance of power transmission and distribution lines according to any one of claims 1 to 3, characterized in that, An infrared ranging sensor (7) connected to the control unit for detecting whether there is a foreign object on the insulating rope is installed outside the rope guide frame (6), and the infrared ranging sensor (7) is located above the rope inlet (602).

8. A portable electric winch for maintenance of power transmission and distribution lines according to any one of claims 1 to 3, characterized in that, At least one guide wheel (607) for guiding the insulating rope that will penetrate into the rope outlet (603) is provided on the rope guide frame (6); Guide rollers (9) for guiding the insulating rope into the rope inlet (602) are fixedly installed on the first positioning plate (1) and the second positioning plate (2).

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