Portable electric device for ultrahigh-voltage equipotential operation inlet and outlet and operation method of portable electric device

Abstract

The invention belongs to the technical field of electrical equipment maintenance, and particularly relates to a portable electric device for ultrahigh-voltage equipotential operation inlet and outlet and an operation method thereof.The electric device comprises a power output device, an electromagnetic braking device and a friction transmission device, and the electromagnetic braking device is integrated on a main shaft of the power output device; the friction transmission device is connected with an output shaft of the power output device through a friction wheel, an insulating rope is arranged in the friction wheel to form a friction pair, and a loading hook is installed at the bottom of the friction transmission device. The friction transmission device rotates through the power output device, the whole device ascends and descends along the insulating rope, the object carrying hook pulls a heavy object or a person to ascend and descend along the insulating rope at a constant speed, the speed is controllable, the main shaft is locked through the electromagnetic braking device during power failure, the reverse falling stopping function is achieved, and the device is suitable for ultrahigh-voltage power transmission line equipotential entering and exiting operation.

Description

Technical Field

[0001] This invention belongs to the field of power equipment maintenance technology, specifically relating to a portable electric device for ultra-high voltage equipotential work and its operating method. Background Technology

[0002] Ultra-high voltage transmission lines are characterized by large transmission capacity, small corridor occupation, and significant economic benefits. However, given their extremely large transmission capacity, operational safety is of paramount importance. Effective operation and maintenance technologies must be adopted to ensure the reliable operation of ultra-high voltage power grids, and live-line work is an important technical means to ensure the safe operation of the power grid.

[0003] Currently, there are two main paths for entering and exiting strong electric fields when carrying out various live-line operations on ultra-high voltage transmission lines: entering the conductor equipotentially from the tower: under the premise of meeting the required clearance for live-line operations, insulated tools such as insulated ropes, suspended baskets, rope ladders or rigid ladders are used, and appropriate paths and methods are selected according to the tower structure to enter the conductor equipotentially; entering the conductor equipotentially from the ground: insulated tools such as insulated ropes, suspended baskets or rope ladders are used to enter the equipotential working area.

[0004] However, for straight-line towers with small tower windows and DC line ceramic insulator tension towers, due to limitations in structure or insulator testing methods, traditional methods and equipment for equipotential bonding of incoming and outgoing conductors can no longer meet the requirements for equipotential bonding of live incoming and outgoing conductors. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a portable electric device and its operating method for ultra-high voltage equipotential work, which reduces the physical exertion of high-altitude workers, reduces operational safety risks, shortens the time for live-line maintenance, and improves the efficiency of live-line work.

[0006] One aspect of the present invention provides a portable electric device for ultra-high voltage equipotential work, comprising:

[0007] Power take-off device;

[0008] An electromagnetic braking device is integrated into the main shaft of the power output device;

[0009] A friction transmission device includes a front wall plate and a friction wheel. The friction wheel is disposed on the front wall plate and connected to the output shaft of the power output device. An insulating rope is provided inside the friction wheel to form a friction pair.

[0010] A loading hook is provided on the front wall panel;

[0011] The power output device drives the friction wheel to rotate, so that the entire electric device moves up and down along the insulating rope, and the electromagnetic braking device locks the main shaft of the power output device when the power output device is de-energized.

[0012] In one embodiment of the present invention, the groove of the friction wheel has a V-shaped structure, and the groove forms a wrap angle with the insulating rope within a predetermined range;

[0013] The wheel groove is provided with staggered inclined protrusions on both sides, and the inclined protrusions are used to increase the friction between the wheel groove and the insulating rope;

[0014] One end of the insulating rope is fixed to the angle steel of the tower or the conductor to form a temporary high-altitude suspension point, and the other end of the insulating rope is fixed to the ground to form a temporary support point.

[0015] In one embodiment of the present invention, the friction transmission device further includes:

[0016] A rope guide seat is fixedly installed on the front wall panel and located above the friction wheel. The two sides of the rope guide seat form a rope inlet side and a rope outlet side, respectively.

[0017] A guide rope ring is fixedly installed on the front wall panel. The guide rope seat is located between the guide rope ring and the friction wheel. The insulating rope passes through the guide rope ring and wraps around the outside of the friction wheel from the rope inlet side. The insulating rope wrapping around the friction wheel passes through the rope outlet side and exits from the guide rope ring, so that the insulating rope and the friction wheel form a wrap angle within a predetermined range.

[0018] The protective cover is rotatably mounted on the front wall panel and located below the friction wheel. The movable end of the protective cover is detachably mounted on the front wall panel by a spring lock pin. The protective cover is used to limit the insulating rope in the wheel groove.

[0019] In one embodiment of the present invention, the power output device includes a planetary transmission device and a motor drive device, wherein the planetary transmission device is disposed on the front wall panel, and the planetary transmission device includes:

[0020] The input shaft of the planetary gearbox is connected to the main shaft of the motor drive device.

[0021] Sun gears, two of which are coaxially mounted on the input shaft of the planetary gearbox;

[0022] A primary planetary transmission mechanism is engaged with the sun gear located near the motor drive unit;

[0023] A secondary planetary transmission mechanism is engaged with the sun gear located near the friction transmission device;

[0024] The output gear ring is connected to the first-stage planetary transmission mechanism and the second-stage planetary transmission mechanism to transmit the reduced torque through the output gear ring;

[0025] The planetary gearbox output shaft is coaxially arranged with the planetary gearbox input shaft, and the planetary gearbox output shaft is fixedly connected to the output gear ring.

[0026] In one embodiment of the present invention, a bushing is provided on the outer side of the output shaft of the planetary gearbox, the bushing is rotatably mounted on the front wall plate via a bearing, and the friction wheel is fixedly mounted on the output shaft of the planetary gearbox via an end face locking sleeve.

[0027] In one embodiment of the present invention, the motor drive device includes:

[0028] A motor mounting bracket is connected to the planetary transmission device;

[0029] A torque motor is fixedly installed in the motor mounting bracket, and the torque motor outputs torque through the main shaft;

[0030] The coupling is fixedly mounted on the main shaft;

[0031] The control board is fixedly mounted on the top of the motor mounting base and is electrically connected to the torque motor;

[0032] The control board controls the torque motor to drive the main shaft to rotate in both directions, and the main shaft drives the planetary transmission device through the coupling.

[0033] In one embodiment of the present invention, the motor drive device further includes a storage battery, which is used to drive the torque motor;

[0034] The motor drive device, the planetary transmission device, the electromagnetic braking device, and the control board are all housed within the outer casing.

[0035] The control board is wirelessly connected to a remote control device, which wirelessly controls the motor drive device to raise, lower, or lock the electric device; or, the housing is equipped with a control button electrically connected to the control board, which wirelessly controls the motor drive device to raise, lower, or lock the electric device.

[0036] In one embodiment of the present invention, the electromagnetic braking device includes:

[0037] A fixing plate is mounted on a motor mounting base, and the fixing plate is movably connected to the main shaft of the motor drive device;

[0038] Iron core, wherein a coil winding is provided on the outer side of the iron core;

[0039] A spring-loaded pressure plate is mounted on the coil winding.

[0040] A friction plate is installed between the fixed plate and the spring-loaded pressure plate;

[0041] When the rated voltage is applied to the coil winding, the iron core is attracted to the end face of the spring-loaded pressure plate under the action of electromagnetic force, the friction plate is in an axially free state, and the main shaft of the motor drive device is released and is in a free rotation state; when the coil winding is de-energized, the spring-loaded pressure plate presses the friction plate under the action of spring force, and at the same time the friction plate is pressed tightly against the fixed plate, so that the fixed plate is connected to the main shaft of the motor drive device as a whole, and the main shaft of the motor drive device stops under the action of friction.

[0042] In one embodiment of the present invention, a portable electric device for ultra-high voltage equipotential work is also provided, comprising:

[0043] A planetary transmission device, wherein the input end of the planetary transmission device is connected to the output shaft of a cordless electric drill, and the cordless electric drill is detachably mounted on one side of the planetary transmission device;

[0044] A friction transmission device includes a front wall plate and a friction wheel. The planetary transmission device and the friction wheel are both mounted on the front wall plate. The friction wheel is connected to the output shaft of the planetary transmission device. An insulating rope is provided inside the friction wheel to form a friction pair.

[0045] A loading hook is provided at the bottom of the front wall panel;

[0046] The output end of the planetary transmission device drives the friction transmission device to rotate, so that the entire electric device moves up and down along the insulating rope.

[0047] In one aspect of the present invention, a working method is also proposed, which can be used for a portable electric device for ultra-high voltage equipotential work as described in any of the above-mentioned embodiments. The method includes:

[0048] One end of the insulating rope is fixed to the angle steel of the tower or the conductor by a drone to form a temporary high-altitude suspension point, and the other end of the insulating rope is fixed to the ground to form a temporary support point.

[0049] An insulating rope is threaded into the groove of a friction wheel, and the friction wheel and the insulating rope form a friction pair.

[0050] The power output device is activated to drive the friction wheel to rotate, so that the entire electric device moves up and down along the insulating rope.

[0051] When the target position is reached, the electromagnetic braking device is de-energized and the electric device is locked in the current position.

[0052] The portable electric device and its operating method for ultra-high voltage equipotential work provided by this invention can achieve the following technical effects:

[0053] 1. The device is powered by a storage battery. The loading hook is used to connect and tow heavy objects or lift and tow personnel. By attaching the safety hook to the loading hook, it can tow personnel or heavy objects. The motor-driven device can enable the device to climb and descend at a constant speed along a special insulated rope while carrying a single person or an equal amount of objects. The device is easy to lift and lower, the climbing speed is controllable, and it has a reverse fall prevention function. It is suitable for equipotential entry and exit operations on ultra-high voltage transmission lines.

[0054] 2. The device can perform lifting and transmission operations using a handheld cordless electric drill instead of a torque motor without the need for a device housing, battery, control board, and torque motor. No additional structure is required; simply connect the handheld cordless electric drill to the spindle to drive the device. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0056] Figure 1 A diagram showing the overall state of the electric device of the present invention when the insulating rope is being installed or removed;

[0057] Figure 2 This is a front view of the overall structure of the portable electric device for ultra-high voltage equipotential work of the present invention;

[0058] Figure 3 The electric device of the present invention is shown along Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0059] Figure 4 The electric device of the present invention is shown along Figure 3 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0060] Figure 5 express Figure 3 A cross-sectional schematic diagram of the planetary transmission mechanism in the image;

[0061] Figure 6 express Figure 3 Enlarged view of point C in the middle;

[0062] Figure 7 A three-dimensional structural schematic diagram showing the electric device of the present invention after removing the outer casing;

[0063] Figure 8 This is a structural schematic diagram showing another perspective view of the electric device of the present invention after the outer casing has been removed.

[0064] The symbols in the attached image are explained as follows:

[0065] 10-Planetary transmission device; 11-Planetary gearbox input shaft; 12-Sun gear; 13-First-stage planetary transmission mechanism; 14-Second-stage planetary transmission mechanism; 15-Output gear ring; 16-Planetary gearbox output shaft; 17-Bushing; 18-End face locking sleeve; 101-Planet carrier; 102-Planet gear; 103-Planet gear shaft;

[0066] 20-Motor drive unit; 21-Motor mount; 22-Torque motor; 23-Coupling; 24-Control board; 25-Battery;

[0067] 30-Electromagnetic braking device; 31-Fixing plate; 32-Iron core; 33-Coil winding; 34-Spring-attracting pressure plate; 35-Friction plate;

[0068] 40 - Friction transmission device; 41 - Front wall panel; 42 - Friction wheel; 421 - Slanted boss; 43 - Rope guide seat; 44 - Rope guide ring; 45 - Protective cover; 451 - Spring lock pin;

[0069] 50-Insulating rope;

[0070] 60-Carrying hook. Detailed Implementation

[0071] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0072] Example 1

[0073] Please refer to Figures 1-8 One embodiment of the present invention provides a portable electric device for ultra-high voltage equipotential work, comprising:

[0074] Power take-off device;

[0075] Electromagnetic braking device 30 is integrated into the main shaft of the power output device;

[0076] The friction transmission device 40 includes a front wall plate 41 and a friction wheel 42. The friction wheel 42 is disposed on the front wall plate 41 and is connected to the output shaft of the power output device. An insulating rope 50 is provided inside the friction wheel 42 to form a friction pair.

[0077] A loading hook 60 is provided on the front wall panel 41;

[0078] The power output device drives the friction wheel 42 to rotate, so that the entire electric device moves up and down along the insulating rope 50, and the electromagnetic braking device 30 locks the main shaft of the power output device when the power output device is de-energized.

[0079] Understandably, in this embodiment, the power output device includes a planetary transmission device 10 and a motor drive device 20. The motor drive device 20 drives the planetary transmission device 10, and the output end of the planetary transmission device 10 drives the friction wheel 42 in the friction transmission device 40 to rotate. The friction wheel 42 and the insulating rope 50 form a friction pair. Under the action of friction, the entire electric device moves up and down along the insulating rope 50. The load hook 60 serves to connect and pull heavy objects or lift and pull personnel. By hooking the safety hook into the load hook 60, personnel or heavy objects can be pulled. The motor drive device 20 can climb up and down at a uniform speed along the dedicated insulating rope 50 when carrying a single person or an equal amount of objects. The ascent and descent are free and the climbing speed is controllable. It also has a reverse fall prevention function and is suitable for equipotential entry and exit operations on ultra-high voltage transmission lines. At the same time, the electromagnetic braking device 30 is integrated into the rear end of the main shaft of the motor drive device 20. When the power is cut off, the main shaft is locked to ensure operational safety.

[0080] In one implementation scenario of this embodiment, the groove of the friction wheel 42 is a V-shaped structure, and the groove forms a wrap angle with the insulating rope 50 within a predetermined range;

[0081] The wheel groove is provided with staggered inclined protrusions 421 on both sides, and the inclined protrusions 421 are used to increase the friction between the wheel groove and the insulating rope 50.

[0082] One end of the insulating rope 50 is fixed to the angle steel of the tower or the conductor to form a temporary high-altitude suspension point, and the other end of the insulating rope 50 is fixed to the ground to form a temporary support point.

[0083] Understandably, in this embodiment, the stationary insulating rope 50 becomes a guide rail for the movement of the friction wheel 42. The friction wheel 42 has a friction enhancement structure, and its groove structure is mainly to increase the friction between the groove and the power rope. The friction transmission device 40 is provided with a V-shaped friction wheel 42, and the insulating rope 50 is provided in the groove of the friction wheel 42. When the V-shaped friction wheel 42 rotates, the inclined protrusions 421 on both sides of its groove continuously rub against the surface of the stationary insulating rope 50. The two friction forces are opposite, resulting in a more closely fitted and taut state between the surfaces. At this time, the stationary insulating rope 50 becomes a guide rail for the V-shaped friction wheel 42. The special groove structure of the V-shaped friction wheel 42 relies on the static friction of the insulating rope 50 to transmit torque, so that the V-shaped friction wheel 42 pulls the load vertically up and down along the insulating rope 50 in a way that rotates with the insulating rope 50, thereby achieving the purpose of lifting and pulling heavy objects at high altitudes.

[0084] Please refer to Figure 1 , Figures 3-4 In one implementation scenario of this embodiment, the friction transmission device 40 further includes:

[0085] The rope guide seat 43 is fixedly installed on the front wall panel 41 and located above the friction wheel 42. The two sides of the rope guide seat 43 form a rope inlet side and a rope outlet side, respectively.

[0086] A guide rope ring 44 is fixedly installed on the front wall panel 41. A guide rope seat 43 is located between the guide rope ring 44 and the friction wheel 42. The insulating rope 50 passes through the guide rope ring 44 and wraps around the outside of the friction wheel 42 from the rope inlet side. The insulating rope 50 wrapping around the friction wheel 42 exits from the guide rope ring 44 via the rope outlet side, so that the insulating rope 50 and the friction wheel 42 form a wrap angle within a predetermined range.

[0087] The protective cover 45 is rotatably mounted on the front wall plate 41 and located below the friction wheel 42. The movable end of the protective cover 45 is detachably mounted on the front wall plate 41 by a spring locking pin 451. The protective cover 45 is used to limit the insulating rope 50 in the wheel groove.

[0088] Understandably, in this embodiment, when the friction wheel 42 rotates, the insulating rope 50 is guided and limited by the guide rope ring 44 and the guide rope seat 43. The shape of the insulating rope 50 in the groove of the friction wheel 42 gradually forms a certain range of wrap angle with the groove, and the surface contact range between them gradually increases and continuously rubs. The insulating rope 50 is gradually pressed against the two sides of the groove by the rotational power of the V-shaped groove, forming two opposing frictional forces (consistent with the transmission principle of the V-belt and pulley). At this time, the insulating rope 50, which is in a static state, is transformed into a flexible guide rail of the friction wheel 42. The special groove structure of the friction wheel 42 relies on the static friction of the insulating rope 50 to continuously rotate along the surface of the insulating rope 50 to transmit torque, so that the friction wheel 42 pulls the load vertically up and down along the power rope in the manner of rotating with the insulating rope 50, thereby achieving the purpose of lifting and pulling heavy objects at high altitudes. In addition, during use, the insulating rope 50 can be installed and removed simply by pulling the spring lock pin 451 and rotating the protective cover 45.

[0089] Please refer to Figures 3-5 In one implementation scenario of this embodiment, the power output device includes a planetary transmission device 10 and a motor drive device 20. The planetary transmission device 10 is disposed on the front wall panel 41, and the planetary transmission device 10 includes:

[0090] The input shaft 11 of the planetary gearbox is connected to the main shaft of the motor drive device 20 via a transmission connection.

[0091] Sun gear 12, two sun gears 12 are coaxially mounted on the input shaft 11 of the planetary gearbox;

[0092] The first-stage planetary transmission mechanism 13 is meshed with the sun gear 12 located near the motor drive device 20;

[0093] The secondary planetary transmission mechanism 14 is meshed with the sun gear 12 located near the friction transmission device 40;

[0094] The output gear ring 15 is connected to the first-stage planetary transmission mechanism 13 and the second-stage planetary transmission mechanism 14 to transmit the reduced torque through the output gear ring 15;

[0095] The planetary gearbox output shaft 16 is coaxially arranged with the planetary gearbox input shaft 11, and the planetary gearbox output shaft 16 is fixedly connected to the output gear ring 15.

[0096] Understandably, this embodiment discloses a planetary transmission device 10. A motor drive device 20 rotates the input shaft 11 of the planetary gearbox, transmitting power to two coaxial sun gears 12. These drive the primary planetary transmission mechanism 13 and the secondary planetary transmission mechanism 14, which mesh with the two sun gears 12, respectively. The reduced torque is transmitted to the output shaft 16 of the planetary gearbox via the output gear ring 15, ultimately driving the friction wheel 42 in the friction transmission device 40 to rub against the insulating rope 50, causing the electric device to rise and fall along the insulating rope 50. This embodiment converts the high-speed, low-torque transmitted by the motor drive device 20 or other power sources into low-speed, high-torque transmission to the friction transmission device 40, providing greater output force. This allows the friction transmission device 40 to generate sufficient friction, ensuring that the electric device can bear heavier loads via the loading hook 60, thereby achieving stable rising and falling on the insulating rope 50.

[0097] Please refer to Figures 3-5 In one implementation scenario of this embodiment, a bushing 17 is provided on the outer side of the planetary gearbox output shaft 16. The bushing 17 is rotatably mounted on the front wall plate 41 via a bearing, and the friction wheel 42 is fixedly mounted on the planetary gearbox output shaft 16 via an end face locking sleeve 18.

[0098] Please refer to Figure 3 , Figures 7-8 In one implementation scenario of this embodiment, the motor drive device 20 includes:

[0099] The motor mounting bracket 21 is connected to the planetary transmission device 10;

[0100] A torque motor 22 is fixedly installed in the motor mounting base 21, and the torque motor 22 outputs torque through the main shaft;

[0101] Coupling 23 is fixedly installed on the main shaft;

[0102] The control board 24 is fixedly installed on the top of the motor mounting base 21 and is electrically connected to the torque motor 22;

[0103] The control board 24 controls the torque motor 22 to drive the main shaft to rotate in both directions, and the main shaft drives the planetary transmission device 10 through the coupling 23.

[0104] Understandably, this embodiment discloses the composition of the motor drive device 20. The torque motor 22 is fixedly installed in the motor mounting base 21 and outputs torque through the main shaft. The coupling 23 is fixed on the main shaft to ensure that the rotational power of the motor is stably and reliably transmitted to the planetary transmission device 10. The control board 24 is installed on the top of the motor mounting base 21 and electrically connected to the torque motor 22. It can control the forward and reverse rotation and speed of the torque motor 22 in real time, thereby precisely adjusting the rotational motion of the torque motor 22.

[0105] Please refer to Figures 7-8 In one implementation scenario of this embodiment, the motor drive device 20 further includes a storage battery 25, which is used to drive the torque motor 22;

[0106] The motor drive device 20, the planetary transmission device 10, the electromagnetic braking device 30, and the control board 24 are all housed inside the outer casing.

[0107] The control board 24 is wirelessly connected to a remote control device, which wirelessly controls the motor drive device 20 to raise, lower, or lock the electric device; or, the housing is provided with a control button, which is electrically connected to the control board 24, and the control button wirelessly controls the motor drive device 20 to raise, lower, or lock the electric device.

[0108] Understandably, in this embodiment, the motor drive unit 20 is powered by the storage battery 25. The power of the torque motor 22 is transmitted to the planetary transmission unit 10 via the main shaft and coupling 23, driving the friction wheel 42 to rotate. The electromagnetic brake unit 30 locks the main shaft when the power is off. The motor drive unit 20, planetary transmission unit 10, electromagnetic brake unit 30, and control board 24 are all housed within the housing, forming a compact structure. The control board 24 is connected to the remote control device via wireless communication or electrically connected via control buttons on the housing, allowing the operator to remotely control the electric device to rise, fall, or lock, improving operational flexibility and safety.

[0109] Please refer to Figure 6 In one implementation scenario of this embodiment, the electromagnetic braking device 30 includes:

[0110] A fixing plate 31 is mounted on a motor mounting base 21, and the fixing plate 31 is movably connected to the main shaft of the motor drive device 20;

[0111] Iron core 32, with coil winding 33 provided on the outer side of the iron core 32;

[0112] A spring-loaded pressure plate 34 is mounted on the coil winding 33;

[0113] Friction plate 35 is installed between the fixing plate 31 and the spring suction plate 34;

[0114] When the rated voltage is applied to the coil winding 33, the iron core 32 is attracted to the end face of the spring-loaded pressure plate 34 under the action of electromagnetic force, the friction plate 35 is in an axially free state, and the main shaft of the motor drive device 20 is released and is in a free rotation state. After the coil winding 33 is de-energized, the spring-loaded pressure plate 34 presses the friction plate 35 under the action of spring force, and at the same time, the friction plate 35 is pressed tightly against the fixing plate 31, so that the fixing plate 31 is connected to the main shaft of the motor drive device 20 as a whole, and the main shaft of the motor drive device 20 stops under the action of friction.

[0115] Understandably, this embodiment discloses the composition of the electromagnetic braking device 30. The electromagnetic braking device 30 is a dry single-plate electromagnetic braking device 30 fixed to the rear end of the through-type main shaft of the torque motor 22. The fixing plate 31 of the brake is movably connected to the main shaft of the torque motor 22. After the rated voltage is applied to the coil winding 33, the iron core 32 compresses the spring under the action of electromagnetic force and attracts the end face of the spring-attracting pressure plate 34. At this time, the intermediate friction plate 35 is in an axially free state and does not fit with the fixing plate 31 of the brake. At this time, the main shaft of the torque motor 22 is released and can rotate freely. After the power is cut off, the spring-attracting pressure plate 34 presses the friction plate 35 under the action of spring force. At the same time, the friction plate 35 is tightly attached to the fixing plate 31 of the brake. The fixing plate 31 is connected to the main shaft of the torque motor 22 as one unit. At this time, the main shaft of the torque motor 22 is braked under the action of friction.

[0116] Example 2

[0117] In one embodiment of the present invention, a portable electric device for ultra-high voltage equipotential work is also provided, comprising:

[0118] Planetary transmission device 10, the input end of which is connected to the output shaft of a cordless electric drill, the cordless electric drill being detachably mounted on one side of the planetary transmission device 10;

[0119] The friction transmission device 40 includes a front wall plate 41 and a friction wheel 42. The planetary transmission device 10 is disposed on the inner side of the front wall plate 41, and the friction wheel 42 is disposed on the outer side of the front wall plate 41. The friction wheel 42 is connected to the output shaft of the planetary transmission device 10, and an insulating rope 50 is provided inside the friction wheel 42 to form a friction pair.

[0120] A loading hook 60 is provided at the bottom of the front wall panel 41;

[0121] The output end of the planetary transmission device 10 drives the friction transmission device 40 to rotate, so that the entire electric device moves up and down along the insulating rope 50.

[0122] Understandably, in this embodiment, the device can perform lifting and transmission operations by using a handheld rechargeable electric drill instead of the torque motor 22 without the device housing, battery 25, control board 24, and torque motor 22. No additional structure is required; the device can be driven simply by connecting the handheld rechargeable electric drill to the input end of the planetary transmission device 10. The output end of the planetary transmission device 10 drives the friction wheel 42 in the friction transmission device 40 to rotate. The friction wheel 42 and the insulating rope 50 form a friction pair. Under the action of friction, the entire electric device rises and falls along the insulating rope 50. The load hook 60 serves to connect and pull heavy objects or lift and pull personnel. By hooking the safety hook into the load hook 60, personnel or heavy objects can be pulled to climb and descend at a uniform speed along the insulating rope 50, with free lifting and controllable climbing speed.

[0123] In one implementation scenario of this embodiment, the groove of the friction wheel 42 is a V-shaped structure, and the groove forms a wrap angle with the insulating rope 50 within a predetermined range;

[0124] The wheel groove is provided with staggered inclined protrusions 421 on both sides, and the inclined protrusions 421 are used to increase the friction between the wheel groove and the insulating rope 50.

[0125] One end of the insulating rope 50 is fixed to the angle steel of the tower or the conductor to form a temporary high-altitude suspension point, and the other end of the insulating rope 50 is fixed to the ground to form a temporary support point.

[0126] Understandably, in this embodiment, the stationary insulating rope 50 becomes a guide rail for the movement of the friction wheel 42. The friction wheel 42 has a friction enhancement structure, and its groove structure is mainly to increase the friction between the groove and the power rope. The friction transmission device 40 is provided with a V-shaped friction wheel 42, and the insulating rope 50 is provided in the groove of the friction wheel 42. When the V-shaped friction wheel 42 rotates, the inclined protrusions 421 on both sides of its groove continuously rub against the surface of the stationary insulating rope 50. The two friction forces are opposite, resulting in a more closely fitted and taut state between the surfaces. At this time, the stationary insulating rope 50 becomes a guide rail for the V-shaped friction wheel 42. The special groove structure of the V-shaped friction wheel 42 relies on the static friction of the insulating rope 50 to transmit torque, so that the V-shaped friction wheel 42 pulls the load vertically up and down along the insulating rope 50 in a way that rotates with the insulating rope 50, thereby achieving the purpose of lifting and pulling heavy objects at high altitudes.

[0127] In one implementation scenario of this embodiment, the friction transmission device 40 further includes:

[0128] The rope guide seat 43 is fixedly installed on the front wall panel 41 and located above the friction wheel 42. The two sides of the rope guide seat 43 form a rope inlet side and a rope outlet side, respectively.

[0129] A guide rope ring 44 is fixedly installed on the front wall panel 41 and located above the guide rope seat 43. The guide rope ring 44 is used to limit the insulating rope 50 from entering the friction wheel 42 from the rope inlet side and to limit the insulating rope 50 from leaving the friction wheel 42 from the rope outlet side.

[0130] The protective cover 45 is rotatably mounted on the front wall plate 41 and located below the friction wheel 42. The movable end of the protective cover 45 is detachably mounted on the front wall plate 41 by a spring locking pin 451. The protective cover 45 is used to limit the insulating rope 50 in the wheel groove.

[0131] Understandably, in this embodiment, when the friction wheel 42 rotates, the insulating rope 50 is guided and limited by the guide rope ring 44 and the guide rope seat 43. The shape of the insulating rope 50 in the groove of the friction wheel 42 gradually forms a certain range of wrap angle with the groove, and the surface contact range between them gradually increases and continuously rubs. The insulating rope 50 is gradually pressed against the two sides of the groove by the rotational power of the V-shaped groove, forming two opposing frictional forces (consistent with the transmission principle of the V-belt and pulley). At this time, the insulating rope 50, which is in a static state, is transformed into a flexible guide rail of the friction wheel 42. The special groove structure of the friction wheel 42 relies on the static friction of the insulating rope 50 to continuously rotate along the surface of the insulating rope 50 to transmit torque, so that the friction wheel 42 pulls the load vertically up and down along the power rope in the manner of rotating with the insulating rope 50, thereby achieving the purpose of lifting and pulling heavy objects at high altitudes. In addition, during use, the insulating rope 50 can be installed and removed simply by pulling the spring lock pin 451 and rotating the protective cover 45.

[0132] In one implementation scenario of this embodiment, the planetary transmission device 10 includes:

[0133] The input shaft 11 of the planetary gearbox is connected to the output shaft of the cordless electric drill.

[0134] Sun gear 12, two sun gears 12 are coaxially mounted on the input shaft 11 of the planetary gearbox;

[0135] The primary planetary transmission mechanism 13 is engaged with the sun gear 12 located near the rechargeable electric drill;

[0136] The secondary planetary transmission mechanism 14 is meshed with the sun gear 12 located near the friction transmission device 40;

[0137] The output gear ring 15 is connected to the first-stage planetary transmission mechanism 13 and the second-stage planetary transmission mechanism 14 to transmit the reduced torque through the output gear ring 15;

[0138] The planetary gearbox output shaft 16 is coaxially arranged with the planetary gearbox input shaft 11, and the planetary gearbox output shaft 16 is fixedly connected to the output gear ring 15.

[0139] Understandably, this embodiment discloses a planetary transmission device 10. The output shaft of the cordless electric drill drives the input shaft 11 of the planetary gearbox to rotate, transmitting power to two coaxial sun gears 12. These drive the primary planetary transmission mechanism 13 and the secondary planetary transmission mechanism 14, which mesh with the two sun gears 12, respectively. The reduced torque is transmitted to the output shaft 16 of the planetary gearbox via the output gear ring 15, ultimately driving the friction wheel 42 in the friction transmission device 40 to rub against the insulating rope 50, causing the electric device to move up and down along the insulating rope 50. This embodiment converts the high-speed, low-torque output power of the cordless electric drill into low-speed, high-torque power and transmits it to the friction transmission device 40, providing greater output force. This allows the friction transmission device 40 to generate sufficient friction, ensuring that the electric device can bear heavier loads via the loading hook 60, thereby achieving stable lifting and lowering on the insulating rope 50.

[0140] In this embodiment, the primary planetary transmission mechanism 13 and the secondary planetary transmission mechanism 14 have the same structure, both including a planet carrier 101, planet gears 102, and a planet gear shaft 103. The planet gears 102 are mounted on the planet gear shaft 103 and mesh with the sun gear 12. The planet gear shaft 103 is mounted on the planet carrier 101 via bearings, and the planet carrier 101 is connected to the output gear ring 15.

[0141] In one implementation scenario of this embodiment, a bushing 17 is provided on the outer side of the planetary gearbox output shaft 16. The bushing 17 is rotatably mounted on the front wall plate 41 via a bearing, and the friction wheel 42 is fixedly mounted on the planetary gearbox output shaft 16 via an end face locking sleeve 18.

[0142] Example 3

[0143] Based on Embodiment 1 or 2, one embodiment of the present invention further proposes an operating method, which can be used for a portable electric device for ultra-high voltage equipotential work as described in any of the above embodiments, the method comprising:

[0144] One end of the insulating rope 50 is fixed to the angle steel of the tower or the conductor by the drone to form a temporary high-altitude suspension point, and the other end of the insulating rope 50 is fixed to the ground to form a temporary support point.

[0145] The insulating rope 50 is threaded into the groove of the friction wheel 42, and the friction wheel 42 and the insulating rope 50 form a friction pair;

[0146] Start the motor drive device 20, and drive the friction wheel 42 to rotate through the planetary transmission device 10, so that the entire electric device is raised and lowered along the insulating rope 50;

[0147] When the target position is reached, the electromagnetic braking device 30 is de-energized and the electric device is locked in the current position.

[0148] Understandably, in this embodiment, the method of entering and exiting equipotential bonding from the ground involves using a drone to pull an insulating rope 50 from high altitude around a conductor and release it to the ground. The insulating rope 50 is then fixed to the angle steel of the ground tower, forming a temporary high-altitude suspension point. The other end of the insulating rope 50 is fixed to the ground, forming a temporary fulcrum. The insulating rope 50 extending from the high-altitude suspension point to the ground serves as a guide rail for the dedicated equipment, providing a path to enter the equipotential bonding area. In conjunction with a portable electric device for ultra-high voltage equipotential bonding operations, it can pull a single person or an object of equal weight (≤100kg) up and down along the insulating rope 50. The overall structure is lightweight and compact, small in size, light in weight (≤4.5kg), portable and efficient in operation, with real-time controllable operation, controllable movement speed, and free lifting and lowering. It also has a reverse fall prevention function.

[0149] The operation method of this embodiment can change the existing equipotential entry and exit operation method of ultra-high voltage transmission lines, greatly reduce the physical exertion of high-altitude workers, reduce the safety risks of operation, shorten the time of live-line maintenance operation, and improve the efficiency of live-line operation.

[0150] Furthermore, the device is powered by the storage battery 25, and the torque motor 22 can climb and descend at a constant speed along the dedicated insulated rope 50 when carrying a single person or an equal amount of objects. The ascent and descent are smooth and the climbing speed is controllable, and it also has a reverse fall prevention function. Alternatively, the device can be operated without the device housing, storage battery 25, control board 24, and torque motor 22. A handheld cordless electric drill can be used instead of the torque motor 22 for lifting and transmission operations. No additional structure is required. The device can be driven by directly connecting the handheld cordless electric drill to the input end of the planetary transmission device 10.

[0151] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A portable electric device for ultra-high voltage equipotential work, characterized in that, include: Power take-off device; An electromagnetic braking device (30) is integrated into the main shaft of the power output device; The friction transmission device (40) includes a front wall plate (41) and a friction wheel (42). The friction wheel (42) is disposed on the front wall plate (41). The friction wheel (42) is connected to the output shaft of the power output device. An insulating rope (50) is provided inside the friction wheel (42) to form a friction pair. A loading hook (60) is provided on the front wall panel (41); The power output device drives the friction wheel (42) to rotate so that the electric device as a whole moves up and down along the insulating rope (50), and the electromagnetic braking device (30) locks the main shaft of the power output device when the power output device is de-energized.

2. The portable electric device for ultra-high voltage equipotential work as described in claim 1, characterized in that, The groove of the friction wheel (42) is a V-shaped structure, and the groove and the insulating rope (50) form a wrap angle within a predetermined range; The wheel groove is provided with staggered inclined bosses (421) on both sides, and the inclined bosses (421) are used to increase the friction between the wheel groove and the insulating rope (50); One end of the insulating rope (50) is fixed to the angle steel of the iron tower or the conductor to form a temporary high-altitude suspension point, and the other end of the insulating rope (50) is fixed to the ground to form a temporary support point.

3. The portable electric device for ultra-high voltage equipotential work as described in claim 2, characterized in that, The friction transmission device (40) further includes: The rope guide seat (43) is fixedly installed on the front wall panel (41) and located above the friction wheel (42). The two sides of the rope guide seat (43) form the rope inlet side and the rope outlet side, respectively. A guide rope ring (44) is fixedly installed on the front wall panel (41). The guide rope seat (43) is located between the guide rope ring (44) and the friction wheel (42). The insulating rope (50) passes through the guide rope ring (44) and wraps around the outside of the friction wheel (42) from the rope inlet side. The insulating rope (50) wrapping around the friction wheel (42) passes through the rope outlet side and exits from the guide rope ring (44) so ​​that the insulating rope (50) and the friction wheel (42) form a wrap angle within a predetermined range. The guide ring (44) is used to limit the insulating rope (50) from entering the friction wheel (42) from the rope inlet side and to limit the insulating rope (50) from leaving the friction wheel (42) from the rope outlet side; and The protective cover (45) is rotatably mounted on the front wall plate (41) and located below the friction wheel (42). The movable end of the protective cover (45) is detachably mounted on the front wall plate (41) by a spring lock pin (451). The protective cover (45) is used to limit the insulating rope (50) in the wheel groove.

4. The portable electric device for ultra-high voltage equipotential work as described in claim 1, characterized in that, The power output device includes a planetary transmission device (10) and a motor drive device (20). The planetary transmission device (10) is mounted on the front wall panel (41). The planetary transmission device (10) includes: The input shaft (11) of the planetary gearbox is connected to the main shaft of the motor drive device (20) via a transmission connection. Sun gear (12), two sun gears (12) are coaxially mounted on the input shaft (11) of the planetary gearbox; The first-stage planetary transmission mechanism (13) is engaged with the sun gear (12) located near the motor drive device (20); The secondary planetary transmission mechanism (14) is meshed with the sun gear (12) located near the friction transmission device (40); The output gear ring (15) is connected to the first-stage planetary transmission mechanism (13) and the second-stage planetary transmission mechanism (14) to transmit the reduced torque through the output gear ring (15); The planetary gearbox output shaft (16) is coaxially arranged with the planetary gearbox input shaft (11), and the planetary gearbox output shaft (16) is fixedly connected to the output gear ring (15).

5. The portable electric device for ultra-high voltage equipotential work as described in claim 4, characterized in that, A bushing (17) is provided on the outer side of the output shaft (16) of the planetary gearbox. The bushing (17) is rotatably mounted on the front wall plate (41) by bearings. The friction wheel (42) is fixedly mounted on the output shaft (16) of the planetary gearbox by end face locking sleeve (18).

6. The portable electric device for ultra-high voltage equipotential work as described in claim 4, characterized in that, The motor drive device (20) includes: The motor mounting bracket (21) is connected to the planetary transmission device (10); A torque motor (22) is fixedly installed in the motor mounting base (21), and the torque motor (22) outputs torque through the main shaft; Coupling (23) is fixedly installed on the main shaft; The control board (24) is fixedly installed on the top of the motor mounting base (21) and electrically connected to the torque motor (22); The control board (24) controls the torque motor (22) to drive the main shaft to rotate in both directions, and the main shaft drives the planetary transmission device (10) through the coupling (23).

7. The portable electric device for ultra-high voltage equipotential work as described in claim 6, characterized in that, The motor drive device (20) also includes a battery (25) for driving the torque motor (22); The motor drive device (20), the planetary transmission device (10), the electromagnetic braking device (30), and the control board (24) are all housed inside the outer casing; The control board (24) is wirelessly connected to the remote control device, and the motor drive device (20) is wirelessly controlled by the remote control device to make the electric device rise, fall or lock; or, the housing is provided with a control button, which is electrically connected to the control board (24), and the motor drive device (20) is wirelessly controlled by the control button to make the electric device rise, fall or lock.

8. The portable electric device for ultra-high voltage equipotential work as described in claim 6, characterized in that, The electromagnetic braking device (30) includes: A fixing plate (31) is mounted on a motor mounting base (21), and the fixing plate (31) is movably connected to the main shaft of the motor drive device (20); Iron core (32), and a coil winding (33) is provided on the outside of the iron core (32); A spring-loaded pressure plate (34) is mounted on the coil winding (33); Friction plate (35) is installed between the fixing plate (31) and the spring suction plate (34).

9. A portable electric device for ultra-high voltage equipotential work, characterized in that, include: Planetary transmission device (10), the input end of which is connected to the output shaft of a cordless electric drill, the cordless electric drill being detachably mounted on one side of the planetary transmission device (10); The friction transmission device (40) includes a front wall plate (41) and a friction wheel (42). The planetary transmission device (10) and the friction wheel (42) are both mounted on the front wall plate (41). The friction wheel (42) is connected to the output shaft of the planetary transmission device (10). An insulating rope (50) is provided inside the friction wheel (42) to form a friction pair. A loading hook (60) is provided at the bottom of the front wall panel (41); The output end of the planetary transmission device (10) drives the friction transmission device (40) to rotate, so that the entire electric device moves up and down along the insulating rope (50).

10. A method of operation, characterized in that, A portable electric device for ultra-high voltage equipotential work as described in any one of claims 1-8, the method comprising: One end of the insulating rope (50) is fixed to the angle steel of the iron tower or the conductor by the drone to form a temporary high-altitude suspension point, and the other end of the insulating rope (50) is fixed to the ground to form a temporary support point; An insulating rope (50) is threaded into the groove of a friction wheel (42), and the friction wheel (42) and the insulating rope (50) form a friction pair. The power output device is activated to drive the friction wheel (42) to rotate, so that the entire electric device moves up and down along the insulating rope (50); When the target position is reached, the electromagnetic braking device (30) is de-energized and the electric device is locked in the current position.

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