Large reactor hoisting device and method in high-voltage alternating-current withstand voltage test

Abstract

The invention discloses a large reactor hoisting device and method in a high-voltage alternating-current withstand voltage test, and relates to the technical field of hoisting and hoisting. The large reactor hoisting device comprises a connecting arm installed at the bottom of a connecting base, and a hydraulic assembly arranged on one side of the connecting arm and connected with the connecting arm; the mounting frame is fixed to the bottom of the connecting base, and a driving piece is arranged in the mounting frame and used for pulling the steel wire rope; the steel wire rope penetrates through the traction end and draws the reactor through the traction end, the traction end is provided with a telescopic sliding plate, the sliding plate extends into the reactor from the contact position of the traction end and the reactor, and the inner side of the traction end and the inner side of the sliding plate are provided with a first roller and a second roller respectively. The upper portion and the lower portion of the electric reactor are pulled and fixed, in the hoisting process, the hoisting point is adjusted by changing the clamping state of the pulling end to the steel wire rope, and the hoisting state of the electric reactor is adjusted according to the change of the hoisting point.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting and lifting, and particularly to a large reactor hoisting device and method in a high-voltage AC withstand test. Background Art

[0002] The high-voltage AC withstand test of medium and large reactors is to ensure the reliability and durability of reactors in a high-voltage AC environment. This test generally includes the following aspects: Voltage withstand test: Detect whether the reactor can work normally under high voltage without breakdown or damage; Insulation withstand test: Evaluate the wear resistance and aging resistance of the insulation material of the reactor under the action of high-voltage alternating current; Temperature withstand test: Test the temperature change range of the reactor under the action of high-voltage alternating current to ensure its stability at different temperatures; Mechanical withstand test: Evaluate the mechanical strength and seismic resistance of the reactor under the action of high-voltage alternating current.

[0003] Publication No. CN117800209B discloses a large reactor hoisting device in a UHV 1100 kV GIS AC withstand test, including: a frame, with a mounting frame seat coaxially arranged below it, and the upper end of the mounting frame seat is rotatably mounted on the frame; an inner driving part, installed inside the frame, and the output end of the inner driving part is connected and driven to the mounting frame seat through gear meshing; a lifting ring, sleeved and fixed outside the frame, with a plurality of lifting ropes circumferentially distributed on the lifting ring, and a lifting tool is arranged above the frame, and the lifting tool is connected to one end of each lifting rope; a connecting frame, arranged circumferentially on the mounting frame seat, telescopic lifting arms are installed on the connecting frame, and the telescopic lifting arms can all rotate relative to each other, a hydraulic rod is arranged on the connecting frame, and the telescopic end of the hydraulic rod is connected to the telescopic lifting arm; a hoisting fixture mechanism, installed at one end of each telescopic lifting arm; and a steady-state counterweight assembly. The adopted star-shaped lifting tool structure can improve the lifting stability during the reactor hoisting.

[0004] However, there is still a problem during the reactor hoisting process. First, due to the large weight and complex structure of medium and large reactors, it is difficult to determine the center of gravity of medium and large reactors before hoisting. It is necessary to hoist the reactor until it is completely off the ground, and then determine the center of gravity of the reactor according to the inclination state of the reactor. Based on this situation, after the reactor is completely off the ground, the center of gravity position will shift. As shown in the above hoisting equipment, before hoisting the reactor, without determining the center of gravity, there should be no other objects near the reactor during hoisting to prevent the reactor from colliding with the objects and causing damage to the reactor or the objects. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a large reactor hoisting device and method in a high-voltage AC withstand test, which can more quickly determine the center of gravity position of the reactor during hoisting and adjust the hoisting posture of the hoisting device according to the center of gravity position.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A large reactor hoisting device in a high-voltage AC withstand test, which includes a connection seat that can be used to connect with a crane or a boom. The inside of the connection seat is configured with a connecting piece, and this connecting piece is used to fix the connection seat on the crane or the boom; The hoisting device further includes: A connecting arm is installed at the bottom of the connection seat. One side of the connecting arm is configured with a hydraulic component connected to the connecting arm. The connecting arm is configured to be in a state where it can rotate relative to the connection seat. The hydraulic component changes the extension state of the connecting arm and can swing along with the connecting arm. A steel wire rope is configured at the outwardly extending end of the connecting arm, and the steel wire rope extends vertically towards the ground; A mounting frame is fixed at the bottom of the connection seat. A driving member is configured inside the mounting frame to pull the steel wire rope; A pulling end, the steel wire rope passes through the pulling end and the reactor is pulled through the pulling end. The pulling end is configured with a telescopic sliding plate, and this sliding plate extends from the contact position between the pulling end and the reactor into the reactor. A first roller and a second roller are respectively configured on the pulling end and the inner side of the sliding plate; At least two pulling ends are correspondingly configured for each connecting arm, and the two pulling ends are arranged vertically. The first roller is configured to be swingable, and the first roller swings to clamp the steel wire rope. When the upper pulling end clamps the steel wire rope through the first roller, the hoisting point is located at the position of the upper pulling end. When the lower pulling end clamps the steel wire rope through the first roller, the hoisting point is located at the position of the lower pulling end.

[0007] In one or more embodiments of the present invention, a chuck is provided at the end of the connecting arm extending into the connection seat. The connecting arm is rotatably installed in the connection seat. A servo motor is configured inside the connection seat. The servo motor is fixed inside the connection seat. A gear is installed at the output end of the servo motor, and the gear meshes with the chuck. When the servo motor rotates, the chuck is driven to rotate through the gear, and the rotation of the chuck changes the angle of the connecting arm.

[0008] In one or more embodiments of the present invention, the sliding plate is slidably installed inside the pulling end. Through holes are provided on both the sliding plate and the pulling end, and bolts are configured in the through holes to fix the sliding plate and the pulling end; A telescopic clamping plate is provided inside the pulling end. One end of the clamping plate is set as an elastic end, and the elastic end contacts the bolt. A spring is configured at the end of the clamping plate extending into the pulling end to support the clamping plate; A limiting frame for limiting the clamping plate is configured inside the pulling end. One end of the limiting frame extends to the outside of the pulling end, and the other end of the limiting frame is magnetic. When the limiting frame is pulled outwards, it restricts the clamping plate from popping outwards. The second roller is rotatably installed inside the sliding plate.

[0009] In one or more embodiments of the present invention, the pulling end includes: Traction frame, a sliding plate is arranged at the bottom of the traction frame, a swingable guard plate is arranged on the outside of the traction frame, a first roller is rotatably installed inside the guard plate, a micro telescopic rod is configured inside the traction frame, and the swing angle of the guard plate is controlled by the telescopic of the micro telescopic rod; Extension frame, connecting the traction frame and the guard plate, both ends of the extension frame are respectively rotatably connected to the guard plate and the traction member, and both ends of the extension frame extend outwards, and a steel wire rope passes through the middle of the extension frame; Auxiliary wheel, rotatably installed inside the extension frame, a clamping block is arranged outside the auxiliary wheel. When the guard plate swings towards the traction frame, the clamping block approaches the auxiliary wheel, and the clamping block and the auxiliary wheel and the auxiliary wheel and the first roller form a clamping of the steel wire rope.

[0010] In one or more embodiments of the present invention, the traction end further includes: Positioning wheel, installed inside the traction frame, used to change the winding state of the steel wire rope; Clamping plate, swingably arranged at one end of the traction frame facing the reactor, a first swing frame is arranged inside the clamping plate, one end of the first swing frame is installed on the side of the clamping plate facing the traction frame through a rotating shaft, and the middle of the first swing frame is connected to the electric telescopic rod and can swing relative to the electric telescopic rod; Second swing frame, one end close to the first swing frame is connected to the first swing frame through a rotating shaft, and the other end of the second swing frame extends into the traction frame; Guide groove, opened inside the traction frame and restricting the movement path of the second swing frame, and the second swing frame extends into the guide groove.

[0011] In one or more embodiments of the present invention, a pressing plate is configured inside the clamping plate, the pressing plate is L-shaped and connected to the clamping plate through a rotating shaft, the pressing plate can rotate relative to the clamping plate, a long groove is arranged inside the clamping plate, and the rotating shaft is located in the long groove and contacts the inner wall of the long groove; Top groove, opened inside the clamping plate, a convex block extends outwards on the outside of the pressing plate, the convex block is adapted to the top groove, when the rotating shaft is at one end of the long groove, the rotating shaft and the pressing plate can rotate relative to the clamping plate, and when the convex block enters the top groove and the rotating shaft moves to the other end of the long groove, the convex block is restricted by the top groove; Wear-resistant sheets are configured on the surfaces of the pressing plate and the clamping plate close to the reactor, and the wear-resistant sheets are respectively fixed on the outer walls of the pressing plate and the clamping plate.

[0012] In one or more embodiments of the present invention, the driving member includes: Winding reel, rotatably installed inside the mounting frame, a driving disk is arranged on the top of the winding reel, and a meshing wheel is arranged on the top of the winding reel, the meshing wheel meshes with the driving disk, and the driving disk drives the winding reel to rotate through the meshing wheel; Connecting shaft, arranged in the middle of the winding reel, the meshing wheel is sleeved outside the connecting shaft, and a ratchet group is arranged between the connecting shaft and the winding reel; Winding motor, fixed at the bottom of the mounting frame and driving the winding reel to rotate.

[0013] In one or more embodiments of the present invention, the drive disk consists of a drive motor and a disk body. The drive motor is installed inside the mounting frame, and the disk body is connected to the output end of the drive motor. The rotation of the output end of the drive motor drives the disk body to rotate. The meshing teeth are formed inside the disk body and mesh with the meshing wheel. The meshing teeth are internal teeth, and the meshing wheel is external teeth. When the disk body rotates, it drives the meshing wheel meshing with the meshing teeth to rotate.

[0014] In one or more embodiments of the present invention, an inclination sensor is configured inside the pulling frame. The inclination sensor acquires the inclination angle and inclination state of the pulling frame. One end of the sliding plate extending outwards is configured with a buckle, which is integrally provided with the sliding plate. The buckle is for the fixing belt to pass through for fixing the reactor.

[0015] The embodiment of the present application also provides a lifting method for medium and large-sized reactors, which is used for the above-mentioned lifting device and includes the following steps: Loosen the steel wire rope to an appropriate length and unfold the connecting arm; The upper and lower parts of the pulling end are respectively installed on the upper and lower parts of the reactor; The driving member winds up the steel wire rope, and the reactor is pulled through the steel wire rope; Determine the angle of the reactor, adjust the clamping state of the pulling end with respect to the steel wire rope, and determine the lifting point; Lift the reactor, and adjust the balance of the reactor after rising a certain height; Transport it to the test position and lower the reactor.

[0016] Through the above technical solutions, the present invention has the following beneficial effects: 1. By pulling and fixing the upper and lower parts of the reactor, during the lifting process, by changing the clamping state of the pulling end with respect to the steel wire rope, the lifting point is adjusted, and according to the change of the lifting point, the lifting state of the reactor is adjusted, so as to avoid the problem that the reactor has a lateral displacement due to the uncertain center of gravity position during the lifting process.

[0017] 2. By cooperating the steel wire rope lifting with the inclination sensor, when the reactor deviates, according to the inclination state of the pulling end monitored by the inclination sensor, the pulling state of each pulling end is adjusted respectively, so that the reactor can move upwards smoothly when leaving the ground without generating lateral displacement.

[0018] 3. By using the pulling end that can clamp the steel wire rope, during use, the upper and lower two pulling ends can be respectively installed on the upper and lower parts of the reactor. When lifting through the steel wire rope, the pulling ends at different positions clamp the steel wire rope, which can change the lifting point, thereby adjusting the center of gravity state of the reactor when it is lifted.

[0019] 4. When hoisting, it is possible to adjust a single steel wire rope according to the inclination state of the reactor, and it is also possible to operate multiple steel wire ropes simultaneously for synchronous hoisting.

[0020] Other features and advantages of the present invention will be described in the subsequent description, and some will become obvious from the description or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic structural view of the present invention with the connecting seat removed; Figure 3 is a schematic view of the position of the connecting arm of the present invention; Figure 4 is a schematic structural view of a single steel wire rope of the present invention; Figure 5 is a schematic installation structure view of the connecting seat and the mounting bracket of the present invention; Figure 6 is a schematic internal structure view of the connecting seat of the present invention; Figure 7 is a schematic structural view of the mounting bracket of the present invention; Figure 8 is a bottom view of the driving disc of the present invention; Figure 9 is an exploded view of the connection structure of the winding motor of the present invention; Figure 10 is a schematic connection structure view of the pulling end and the steel wire rope of the present invention; Figure 11 is a schematic view of the pulling end of the present invention; Figure 12 is a sectional view of the pulling frame of the present invention; Figure 13 is a schematic partial structure view of the pulling frame of the present invention; Figure 14 is the sectional plane of the pulling frame of the present invention Figure 1 ; Figure 15 is the sectional plane of the pulling frame of the present invention Figure 2 ; Figure 16 is a schematic view of the buckle plate structure of the present invention Figure 1 ; Figure 17 is a schematic view of the buckle plate structure of the present invention Figure 2 ; Figure 18 is a schematic view of the pressing plate structure of the present invention; Figure 19 Schematic diagram of the skateboard structure of the present invention; Figure 20 Schematic diagram of the limit frame structure of the present invention.

[0022] In the figure: 1 connecting seat, 2 connecting arm, 3 hydraulic component, 4 steel wire rope, 5 mounting bracket, 6 driving member, 7 pulling end, 8 skateboard, 9 first roller, 10 second roller; 21 chuck, 22 servo motor, 23 gear; 81 through hole, 82 bolt, 83 clamping plate, 84 spring, 85 limit frame; 71 pulling frame, 72 guard plate, 73 micro telescopic rod, 74 extension frame, 75 auxiliary wheel, 76 clamping block, 77 positioning wheel, 78 clamping plate, 79 first swing frame, 710 second swing frame, 711 electric telescopic rod, 712 guide groove; 781 pressing plate, 782 long groove, 783 top groove, 784 convex block, 785 wear-resistant sheet; 61 winding disc, 62 driving disc, 63 meshing wheel, 64 connecting shaft, 65 ratchet group, 66 winding motor; 621 driving motor, 622 disc body, 623 meshing tooth; 11 inclination sensor, 12 buckle. Detailed implementation manners

[0023] The following will disclose multiple implementation manners of the present invention with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some implementation manners of the present invention, these practical details are not necessary. And if possible in implementation, the features of different embodiments can be applied interactively.

[0024] Unless otherwise defined, all the terms (including technical and scientific terms) used herein have their ordinary meanings, and their meanings can be understood by those skilled in this field. Further, the definitions of the above terms in the commonly used dictionary should be interpreted as having the same meaning as that in the relevant field of the present invention. Unless specifically defined, these terms will not be construed as idealized or overly formal meanings.

[0025] The following explains the relationships and terms used in this application: Parallel: The parallel defined in this application is not limited to absolute parallel. This definition of parallel can be understood as substantially parallel, allowing situations where it is not absolutely parallel due to factors such as assembly tolerances, design tolerances, and the influence of structural flatness. Small-angle range errors are allowed, for example, within an assembly error range of 10 degrees, and it can be understood as a parallel relationship.

[0026] Vertical: The vertical defined in this application is not limited to an absolutely vertically intersecting (angle of 90 degrees) relationship. A relationship that is not an absolutely vertically intersecting one caused by factors such as assembly tolerances, design tolerances, and the influence of structural flatness is allowed, and an error within a small angle range is permitted. For example, within an assembly error range of 80 degrees to 100 degrees, it can all be understood as a vertical relationship.

[0027] Ground: The ground defined in this application is not limited to the ground of a certain material or region. It is only a platform for carrying this application on the surface, and stacking, tilting, and flatness changes are allowed. For example, a cement ground, a ceramic tile ground, a working platform, etc. can all be interpreted as the ground.

[0028] The above explanations do not fully cover the relationship definitions given in this application and only represent a part of this application.

[0029] The present invention provides a hoisting device for large reactors in a high-voltage AC withstand voltage test, which hoists large and medium-sized reactors during the high-voltage AC withstand voltage test and can more quickly determine the center of gravity position of the reactor.

[0030] Refer to Figures 1-4 As shown, in one embodiment, the hoisting device includes a connection seat 1 that can be used to connect to a crane or a crane arm. Connecting pieces are arranged inside the connection seat 1, and these connecting pieces are used to fix the connection seat 1 to the crane or the crane arm; The hoisting device further includes: A connecting arm 2 is installed at the bottom of the connection seat 1. A hydraulic component 3 is arranged on one side of the connecting arm 2 and is connected to the connecting arm 2. The connecting arm 2 is configured to be in a state of being rotatable relative to the connection seat 1. The hydraulic component 3 changes the extension state of the connecting arm 2 and can swing along with the connecting arm 2. A steel wire rope 4 is arranged at the outward extending end of the connecting arm 2, and the steel wire rope 4 extends vertically towards the ground; A mounting frame 5 is fixed to the bottom of the connection seat 1. A driving member 6 is arranged inside the mounting frame 5 for pulling the steel wire rope 4; A pulling end 7, the steel wire rope 4 passes through the pulling end 7 and the reactor is pulled through the pulling end 7. The pulling end 7 is provided with a telescopic slide plate 8, and the slide plate 8 extends towards the inside of the reactor from the contact position of the pulling end 7 with the reactor. A first roller 9 and a second roller 10 are respectively arranged on the inner side of the pulling end 7 and the slide plate 8; At least two pulling ends 7 are correspondingly arranged for each connecting arm 2, and the two pulling ends 7 are arranged one above the other. The first roller 9 is arranged to be swingable, and the first roller 9 swings to clamp the steel wire rope 4. When the upper pulling end 7 clamps the steel wire rope 4 through the first roller 9, the hoisting point is located at the position of the upper pulling end 7. When the lower pulling end 7 clamps the steel wire rope 4 through the first roller 9, the hoisting point is located at the position of the lower pulling end 7.

[0031] In an implementable manner, when hoisting, two pulling ends 7 are correspondingly arranged for each connecting arm 2. Different pulling ends 7 clamp the steel wire rope 4 to change the hoisting points corresponding to the connecting arm 2, and different combinations of hoisting points are used to adjust the center-of-gravity state of the reactor, so as to avoid problems such as the reactor leaving the ground, the center-of-gravity position shifting during direct hoisting, and the reactor not moving vertically upward, resulting in damage to surrounding objects or the reactor due to the displacement of the reactor.

[0032] Among them, since the upper and lower pulling ends 7 both determine the hoisting points by clamping the steel wire rope 4, when the pulling ends 7 do not clamp the steel wire rope 4, they can slide outside the steel wire rope 4. When hoisting the reactor, the pulling ends 7 can be clamped at different positions of the reactor and adjusted accordingly according to the designed state of the reactor.

[0033] The hydraulic component 3 is a hydraulic telescopic rod. The extension state of the connecting arm 2 is controlled by the telescopic movement of the hydraulic telescopic rod. When the hydraulic telescopic rod extends, the connecting arm 2 unfolds; when the hydraulic telescopic rod retracts, the connecting arm 2 contracts.

[0034] The driving member 6 is connected to the steel wire rope 4 and controls the winding of the steel wire rope 4.

[0035] Refer to Figures 5-6 As shown, in an embodiment, a chuck 21 is arranged at one end of the connecting arm 2 extending into the connecting seat 1. The connecting arm 2 is rotatably installed in the connecting seat 1. A servo motor 22 is arranged inside the connecting seat 1. The servo motor 22 is fixed inside the connecting seat 1. A gear 23 is installed at the output end of the servo motor 22. The gear 23 meshes with the chuck 21. When the servo motor 22 rotates, the chuck 21 is driven to rotate by the gear 23, and the rotation of the chuck 21 changes the angle of the connecting arm 2.

[0036] In an implementable manner, the connecting arm 2 is set to be rotatable to change the angle, and can be adjusted to different angles during use. Since the structural shapes of different reactors are inconsistent, and the corner positions and suitable hoisting positions are different, setting the connecting arm 2 with an adjustable angle can adjust the states of the connecting arm 2 and the pulling end 7 to ensure the stability after the pulling end 7 is connected to the reactor.

[0037] Among them, the hydraulic component 3 changes its position as the connecting arm 2 swings, ensuring the stability after the hydraulic component 3 is connected to the connecting arm 2 and stably supporting the connecting arm 2 without hindering the rotation of the connecting arm 2.

[0038] Refer to Figure 11 and Figures 19-20 As shown, in an embodiment, the sliding plate 8 is slidably installed inside the pulling end 7. Through holes 81 are arranged on both the sliding plate 8 and the pulling end 7, and bolts 82 are arranged inside the through holes 81 for fixing the sliding plate 8 and the pulling end 7. Inside the pulling end 7, a retractable clamping plate 83 is provided. One end of the clamping plate 83 is set as an elastic end, and the elastic end contacts the bolt 82. One end of the clamping plate 83 extending into the pulling end 7 is equipped with a spring 84 for supporting the clamping plate 83. Inside the pulling end 7, a limiting frame 85 for limiting the clamping plate 83 is configured. One end of the limiting frame 85 extends to the outside of the pulling end 7, and the other end of the limiting frame 85 is magnetically set. When the limiting frame 85 is pulled outwards, it restricts the clamping plate 83 from popping outwards. The second roller 10 is rotatably installed inside the sliding plate 8.

[0039] In an implementable manner, the bolt 82 is used to fix the pulling end 7 and the sliding plate 8 to ensure the stability of the position of the sliding plate 8. The through hole 81 provided on the pulling end 7 is configured with threads, and the bolt 82 is fitted with the threads to fix the sliding plate 8. In order to prevent the bolt 82 from detaching during long-term use, the elastic end of the clamping plate 83 is used to increase the friction force when the bolt 82 rotates.

[0040] Among them, in order to enable the elastic end of the clamping plate 83 to stably contact the bolt 82, the spring 84 is used to push the clamping plate 83 outwards from inside the pulling end 7. A clamping groove with the same width dimension as the limiting frame 85 is configured in the middle of the clamping plate 83. The contact surface between the limiting frame 85 and the clamping plate 83 is set as an inclined surface. The inclined surface is inserted into the clamping groove to retract the clamping plate 83 so that it does not contact the bolt 82. And the force that the spring 84 pushes the clamping plate 83 outwards can clamp the limiting frame 85 to ensure the stability of the limiting frame 85.

[0041] Refer to Figures 10-14 As shown, in an embodiment, the pulling end 7 includes: A pulling frame 71, the sliding plate 8 is arranged at the bottom of the pulling frame 71. A swingable guard plate 72 is arranged outside the pulling frame 71. The first roller 9 is rotatably installed inside the guard plate 72. A micro telescopic rod 73 is configured inside the traction frame, and the micro telescopic rod 73 expands and contracts to control the swing angle of the guard plate 72. An extension frame 74, connecting the pulling frame 71 and the guard plate 72. The two ends of the extension frame 74 are respectively rotatably connected to the guard plate 72 and the pulling member, and the two ends of the extension frame 74 extend outwards. The steel wire rope 4 passes through the middle of the extension frame 74. An auxiliary wheel 75 is rotatably installed inside the extension frame 74. A clamping block 76 is arranged outside the auxiliary wheel 75. When the guard plate 72 swings towards the pulling frame 71, the clamping block 76 approaches the auxiliary wheel 75, and the clamping block 76 and the auxiliary wheel 75 as well as the auxiliary wheel 75 and the first roller 9 form a clamping of the steel wire rope 4.

[0042] In an implementable manner, the guard plate 72 is configured to be swingable. When the guard plate 72 is at two extreme swing positions, it corresponds to the clamping of the wire rope 4 and the pulling of the wire rope 4. When the guard plate 72 swings towards the pulling frame 71, the interval between the first roller 9 and the auxiliary wheel 75 shrinks, and the gap between the auxiliary wheel 75 and the clamping block 76 shrinks. The wire rope 4 is clamped at multiple points to ensure the stability of the wire rope 4 and prevent the wire rope 4 from slipping and loosening. The micro telescopic rod 73 is respectively connected to the pulling frame 71 and the guard plate 72, and the micro telescopic rod 73 can swing relative to the pulling frame 71 and the guard plate 72.

[0043] In another embodiment, the micro telescopic rod 73 can be replaced by a hydraulic telescopic rod. The hydraulic telescopic rod is used to change the swing angle of the guard plate 72 to ensure the stability of the clamping of the wire rope 4. To ensure the clamping stability of the wire rope 4, the first roller 9, the auxiliary wheel 75, and the clamping block 76 are all made of rubber, and anti-slip patterns are configured at the positions where the first roller 9, the second roller 10, and the clamping block 76 contact the wire rope 4.

[0044] To further ensure the stability of the wire rope 4 after being clamped, the contact angle range between the wire rope 4 and the first roller 9 and the auxiliary wheel 75 is increased. By increasing the contact area between the wire rope 4 and the first roller 9 and the auxiliary wheel 75, the friction force of the wire rope 4 is further enhanced.

[0045] Refer to Figures 14-16 As shown, in one embodiment, the pulling end 7 further includes: A positioning wheel 77, installed inside the pulling frame 71, for changing the winding state of the wire rope 4; A buckle plate 78, swingably arranged at one end of the pulling frame 71 facing the reactor. A first swing frame 79 is arranged inside the buckle plate 78. One end of the first swing frame 79 is installed on the side of the buckle plate 78 facing the pulling frame 71 through a rotating shaft. The middle of the first swing frame 79 is connected to the electric telescopic rod 711 and can swing relative to the electric telescopic rod 711; A second swing frame 710, the end close to the first swing frame 79 is connected to the first swing frame 79 through a rotating shaft, and the other end of the second swing frame 710 extends towards the inside of the pulling frame 71; A guide groove 712, opened inside the pulling frame 71 to limit the movement path of the second swing frame 710, and the second swing frame 710 extends into the guide groove 712.

[0046] In an implementable manner, the first swing frame 79 and the second swing frame 710 are combined to limit the position of the buckle plate 78. The electric telescopic rod 711 is used to control the clamping of the reactor by the buckle plate 78. When hoisting the reactor, the stability of the connection between the reactor and the pulling end 7 is ensured, and the problem of the contact disconnection between the reactor and the pulling end 7 during hoisting, resulting in the deviation of the center of gravity position of the reactor, is avoided.

[0047] Among them, the first swing frame 79 and the second swing frame 710 are set to be interlocked. Under the telescopic control of the electric telescopic rod 711, the first swing frame 79 and the second swing frame 710 move. By using the restriction of the guide groove 712 on the second swing frame 710, the movement trajectories of the first swing frame 79 and the second swing frame 710 are determined.

[0048] The other end of the clamping plate 78 in contact with the reactor extends to the inside of the pulling frame 71, so that the clamping plate 78 can rotate relative to the pulling frame 71 and can slide relative to the pulling frame 71. By pulling the electric telescopic rod 711, the control of the contact between the clamping plate 78 and the reactor can be realized.

[0049] Refer to Figures 16-18 As shown, in an embodiment, a pressure plate 781 is arranged inside the clamping plate 78. The pressure plate 781 is L-shaped and is connected to the clamping plate 78 through a rotating shaft. The pressure plate 781 can rotate relative to the clamping plate 78. A long groove 782 is arranged inside the clamping plate 78, and the rotating shaft is located in the long groove 782 and contacts the inner wall of the long groove 782; A top groove 783 is opened inside the clamping plate 78. A convex block 784 extends outward from the outside of the pressure plate 781. The convex block 784 is adapted to the top groove 783. When the rotating shaft is at one end of the long groove 782, the rotating shaft and the pressure plate 781 can rotate relative to the clamping plate 78. When the convex block 784 enters the inside of the top groove 783 and the rotating shaft moves to the other end of the long groove 782, the convex block 784 is restricted by the top groove 783; Wear-resistant sheets 785 are arranged on the surfaces of the pressure plate 781 and the clamping plate 78 close to the reactor, and the wear-resistant sheets 785 are respectively fixed on the outer walls of the pressure plate 781 and the clamping plate 78.

[0050] In an implementable manner, the arrangement of the pressure plate 781 can hold the reactor while clamping the surface of the reactor. When there is a depression inside the reactor, the pressure plate 781 can further increase the connection stability between the pulling end 7 and the reactor, and the pulling end 7 will not become loose from the reactor during the hoisting process.

[0051] The combined setting of the long groove 782 and the top groove 783 is used to restrict the pressure plate 781 to ensure the stability of the pressure plate 781. When the rotating shaft is at both ends of the long groove 782, it corresponds to the state of the pressure plate 781. When the reactor has a depression that can be held by the pressure plate 781, the convex block 784 is pressed into the top groove 783, and the cooperation between the convex block 784 and the top groove 783 is used to restrict the pressure plate 781. When the reactor has no depression, the convex block 784 disengages from the top groove 783, and the pressure plate 781 will not interfere with the contact between the clamping plate 78 and the reactor.

[0052] Refer to Figures 6-9 As shown, in an embodiment, the driving member 6 includes: The take-up reel 61 is rotatably installed inside the mounting frame 5. A driving disk 62 is arranged at the top of the take-up reel 61, and a meshing wheel 63 is also arranged at the top of the take-up reel 61. The meshing wheel 63 meshes with the driving disk 62. When the driving disk 62 rotates, the take-up reel 61 is driven to rotate by the meshing wheel 63. The connecting shaft 64 is arranged in the middle of the take-up reel 61. The meshing wheel 63 is sleeved outside the connecting shaft 64, and a ratchet set 65 is arranged between the connecting shaft 64 and the take-up reel 61. The take-up motor 66 is fixed to the bottom of the mounting frame 5 and drives the take-up reel 61 to rotate.

[0053] In an implementable manner, through the arrangement of the driving disk 62, multiple take-up reels 61 can be driven to rotate simultaneously by the driving disk 62, and the multiple take-up reels 61 perform synchronous winding, achieving the effect of lifting the reactor upward. Each take-up reel 61 can be driven to rotate independently by the take-up motor 66, so that the reactor at a certain position can be lifted, and the take-up reel 61 can be wound independently, enabling the reactor to be adjusted to different inclined states.

[0054] The ratchet set 65 consists of an inner ratchet and an outer ratchet. When the connecting shaft 64 rotates clockwise as the driving part, the take-up reel 61 will be driven to rotate clockwise. However, when the take-up reel 61 rotates clockwise as the driving part, due to the one-way transmission characteristic of the ratchet set 65, the take-up reel 61 will not drive the connecting shaft 64 to rotate. The characteristics of the ratchet are used to realize the coexistence of independent rotation and synchronous rotation without interference.

[0055] Refer to Figures 8-9 As shown, in an embodiment, the driving disk 62 is composed of a driving motor 621 and a disk body 622. The driving motor 621 is installed inside the mounting frame 5, and the disk body 622 is connected to the output end of the driving motor 621. When the output end of the driving motor 621 rotates, the disk body 622 is driven to rotate. The meshing teeth 623 are opened on the inner side of the disk body 622 and mesh with the meshing wheel 63. The meshing teeth 623 are internal teeth, and the meshing wheel 63 is external teeth. When the disk body 622 rotates, the meshing wheel 63 meshing with the meshing teeth 623 is driven to rotate.

[0056] In an implementable manner, the disk body 622 drives multiple meshing wheels 63 to rotate synchronously, realizing the synchronous lifting of the height of the reactor.

[0057] Refer to Figures 10-11 As shown, in an embodiment, an inclination sensor 11 is arranged inside the traction frame 71. The inclination sensor 11 obtains the inclination angle and inclination state of the traction frame 71. A buckle 12 is arranged at the outer extending end of the sliding plate 8. The buckle 12 is integrally arranged with the sliding plate 8, and the fixing belt passes through the buckle 12 for fixing the reactor.

[0058] In one implementable manner, the buckle 12 can be arranged to variably connect the pulling ends 7 on both sides by using a fixing belt, ensuring the stability of the connection between the pulling end 7 and the reactor.

[0059] The embodiment of the present application further provides a hoisting method for a medium and large-sized reactor, which is used for the above hoisting device, and includes the following steps: The steel wire rope 4 is loosened by an appropriate length, and the connecting arm 2 is unfolded; The upper and lower pulling ends 7 are respectively installed on the upper and lower parts of the reactor; The driving member 6 winds up the steel wire rope 4, and the reactor is pulled by the steel wire rope 4; Determine the angle of the reactor, adjust the clamping state of the pulling end 7 with respect to the steel wire rope 4, and determine the hoisting point; Lift the reactor, and adjust the balance of the reactor after rising to a certain height; Transport it to the test position and lower the reactor.

[0060] Although the present invention is disclosed in combination with the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A hoisting device for a large reactor in a high-voltage AC withstand voltage test, comprising a connecting seat (1) for connecting with a crane or a crane arm; characterized in that, The hoisting device further includes: A connecting arm (2), which is installed at the bottom of the connecting seat (1). One side of the connecting arm (2) is configured with a hydraulic component (3) connected to the connecting arm (2). The connecting arm (2) is configured to be in a state of being rotatable relative to the connecting seat (1). The hydraulic component (3) changes the extension state of the connecting arm (2) and can swing along with the connecting arm (2). One end of the connecting arm (2) extending outward is configured with a steel wire rope (4), and the steel wire rope (4) extends vertically towards the ground; A mounting frame (5), which is fixed to the bottom of the connecting seat (1). A driving member (6) is configured inside the mounting frame (5) for pulling the steel wire rope (4); A pulling end (7), the steel wire rope (4) passes through the pulling end (7) and pulls the reactor through the pulling end (7). The pulling end (7) is configured with a telescopic sliding plate (8), and the sliding plate (8) extends from the contact position between the pulling end (7) and the reactor into the reactor. The pulling end (7) and the inner side of the sliding plate (8) are respectively configured with a first roller (9) and a second roller (10); Each connecting arm (2) is correspondingly configured with at least two pulling ends (7). The first roller (9) is configured to be swingable and clamp the steel wire rope (4). When the upper first roller (9) swings to clamp the steel wire rope (4), the hoisting point is located at the position of the upper pulling end (7). When the lower first roller (9) swings to clamp the steel wire rope (4), the hoisting point is located at the position of the lower pulling end (7).

2. The hoisting device for large reactors in a high-voltage AC withstand voltage test according to claim 1, wherein, One end of the connecting arm (2) extending into the connecting seat (1) is provided with a chuck (21). The connecting arm (2) is rotatably installed in the connecting seat (1). A servo motor (22) is configured inside the connecting seat (1). The servo motor (22) is fixed inside the connecting seat (1). A gear (23) is installed at the output end of the servo motor (22). The gear (23) meshes with the chuck (21). When the servo motor (22) rotates, the chuck (21) is driven to rotate through the gear (23), and the rotation of the chuck (21) changes the angle of the connecting arm (2).

3. The hoisting device for large reactors in high-voltage AC withstand voltage tests according to claim 2, wherein, The sliding plate (8) is slidably installed inside the pulling end (7). Both the sliding plate (8) and the pulling end (7) are provided with through holes (81). Bolts (82) are configured inside the through holes (81) for fixing the sliding plate (8) and the pulling end (7); An expandable clamping plate (83) is arranged inside the pulling end (7). One end of the clamping plate (83) is set as an elastic end, and the elastic end contacts the bolt (82). One end of the clamping plate (83) extending into the pulling end (7) is configured with a spring (84) for supporting the clamping plate (83); A limiting frame (85) for limiting the clamping plate (83) is configured inside the pulling end (7). One end of the limiting frame (85) extends to the outside of the pulling end (7), and the other end of the limiting frame (85) is magnetically set. When the limiting frame (85) is pulled outwards, the outward pop-up of the clamping plate (83) is restricted. The second roller (10) is rotatably installed inside the sliding plate (8).

4. A hoisting device for a large reactor in a high-voltage AC withstand voltage test according to claim 3, characterized in that, The pulling end (7) includes: Traction frame (71), a skateboard (8) is arranged at the bottom of the traction frame (71), a swingable guard plate (72) is arranged outside the traction frame (71), a first roller (9) is rotatably installed inside the guard plate (72), a micro telescopic rod (73) is configured inside the traction frame, and the swing angle of the guard plate (72) is controlled by the telescopic movement of the micro telescopic rod (73); Extension frame (74), connecting the traction frame (71) and the guard plate (72), both ends of the extension frame (74) are respectively rotatably connected to the guard plate (72) and the traction member, and both ends of the extension frame (74) extend outwards, and a steel wire rope (4) passes through the middle of the extension frame (74); Auxiliary wheel (75), rotatably installed inside the extension frame (74), a clamping block (76) is arranged outside the auxiliary wheel (75), when the guard plate (72) swings towards the traction frame (71), the clamping block (76) approaches the auxiliary wheel (75), and the clamping block (76) and the auxiliary wheel (75) and the auxiliary wheel (75) and the first roller (9) form clamping on the steel wire rope (4).

5. A hoisting device for a large reactor in a high-voltage AC withstand voltage test according to claim 4, characterized in that, The traction end (7) further includes: Positioning wheel (77), installed inside the traction frame (71) for changing the winding state of the steel wire rope (4); Clamping plate (78), swingably arranged at one end of the traction frame (71) facing the reactor, a first swing frame (79) is arranged inside the clamping plate (78), one end of the first swing frame (79) is installed on the side of the clamping plate (78) facing the traction frame (71) through a rotating shaft, and the middle of the first swing frame (79) is connected to the electric telescopic rod (711) and can swing relative to the electric telescopic rod (711); Second swing frame (710), one end close to the first swing frame (79) is connected to the first swing frame (79) through a rotating shaft, and the other end of the second swing frame (710) extends into the traction frame (71); Guide groove (712), opened inside the traction frame (71) to limit the movement path of the second swing frame (710), and the second swing frame (710) extends into the guide groove (712).

6. The hoisting device for a large reactor in a high-voltage AC withstand voltage test according to claim 5, characterized in that, A pressing plate (781) is arranged inside the clamping plate (78), the pressing plate (781) is L-shaped and is connected to the clamping plate (78) through a rotating shaft, the pressing plate (781) can rotate relative to the clamping plate (78), a long groove (782) is arranged inside the clamping plate (78), and the rotating shaft is located in the long groove (782) and contacts the inner wall of the long groove (782); Top groove (783), opened inside the clamping plate (78), a convex block (784) extends outwards on the outside of the pressing plate (781), the convex block (784) is adapted to the top groove (783), when the rotating shaft is at one end of the long groove (782), the rotating shaft and the pressing plate (781) can rotate relative to the clamping plate (78), when the convex block (784) enters the top groove (783) and the rotating shaft moves to the other end of the long groove (782), the convex block (784) is restricted by the top groove (783); Wear-resistant sheets (785) are arranged on the surfaces of the pressing plate (781) and the clamping plate (78) close to the reactor, and the wear-resistant sheets (785) are respectively fixed on the outer walls of the pressing plate (781) and the clamping plate (78).

7. The hoisting device for a large reactor in a high-voltage AC withstand voltage test according to claim 6, wherein, The driving member (6) includes: The take-up reel (61) is rotatably installed inside the mounting frame (5). A drive disk (62) is arranged at the top of the take-up reel (61), and a meshing wheel (63) is arranged at the top of the take-up reel (61). The meshing wheel (63) meshes with the drive disk (62). When the drive disk (62) rotates, the take-up reel (61) is driven to rotate through the meshing wheel (63). The connecting shaft (64) is arranged in the middle of the take-up reel (61). The meshing wheel (63) is sleeved outside the connecting shaft (64). A ratchet group (65) is arranged between the connecting shaft (64) and the take-up reel (61). The take-up motor (66) is fixed to the bottom of the mounting frame (5) and drives the take-up reel (61) to rotate.

8. A hoisting device for a large reactor in a high-voltage AC withstand voltage test according to claim 7, characterized in that, The drive disk (62) consists of a drive motor (621) and a disk body (622). The drive motor (621) is installed inside the mounting frame (5). The disk body (622) is connected to the output end of the drive motor (621). When the output end of the drive motor (621) rotates, the disk body (622) is driven to rotate. The meshing teeth (623) are formed on the inner side of the disk body (622) and mesh with the meshing wheel (63). The meshing teeth (623) are internal teeth, and the meshing wheel (63) is an external tooth. When the disk body (622) rotates, the meshing wheel (63) meshing with the meshing teeth (623) is driven to rotate.

9. The hoisting device for a large reactor in a high-voltage AC withstand voltage test according to claim 8, characterized in that, An inclination sensor (11) is arranged inside the pulling frame (71). The inclination sensor (11) obtains the inclination angle and inclination state of the pulling frame (71). A buckle (12) is arranged at the outward extending end of the sliding plate (8). The buckle (12) is integrally provided with the sliding plate (8). The buckle (12) is for the fixing belt to pass through for fixing the reactor.

10. A hoisting method for a medium and large-sized reactor, which is used for the hoisting device according to any one of claims 1-9, characterized in that, It includes the following steps: The steel wire rope (4) is loosened by an appropriate length, and the connecting arm (2) is unfolded. The pulling ends (7) are arranged vertically and are respectively installed on the upper and lower parts of the reactor. The driving member (6) winds up the steel wire rope (4) to pull the reactor through the steel wire rope (4). Determine the angle of the reactor, adjust the clamping state of the pulling end (7) with respect to the steel wire rope (4), and determine the lifting point. Lift the reactor, and adjust the balance of the reactor after rising to a certain height. Transport it to the test position and lower the reactor.

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