Electrified grinding device and method for contact of switch disconnecting link of transformer substation

Abstract

The invention relates to the technical field of transformer substation switch knife switch contact maintenance, in particular to a transformer substation switch knife switch contact electrified polishing device and a polishing method.The transformer substation switch knife switch contact electrified polishing device comprises two positioning plates and further comprises a controller, a sliding mechanism, an angle adjusting mechanism, a surface treatment mechanism and a purging mechanism; the sliding mechanism comprises a mounting plate, a driving assembly, a sliding plate, two sliding blocks, two sliding rails and four connecting plates, the angle adjusting mechanism comprises a supporting plate, a telescopic assembly and a rotating assembly, the surface treatment mechanism comprises a grinding wheel, a rotating rod and an electric control assembly, and the blowing mechanism comprises a diffusion pipe, a transmission assembly, an air blowing assembly and a speed increasing assembly. According to the live-line grinding device and method for the switch disconnecting link contact of the transformer substation, the working state of the device can be monitored in real time in the grinding process, the safety of live-line work is guaranteed, the problem that power-off work cannot be conducted in high-power-consumption areas is solved, and live-line work can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance of switch knife contacts of a substation, and in particular to a live grinding device and a grinding method for switch knife contacts of a substation. Background Art

[0002] Substation switch blades are usually installed outdoors and exposed to the natural environment, especially in coastal areas. Due to the high concentration of salt and corrosive gases, metal parts are severely corroded, especially metal materials such as stainless steel and cast aluminum, which are prone to rust in the corrosive atmospheric environment of the coast.

[0003] The existing grinding operation has the following shortcomings:

[0004] 1. Generally, the power is turned off before the contact grinding work is carried out, which cannot meet the maintenance needs of high-power consumption areas, that is, it is impossible to perform live grinding operations.

[0005] 2. After grinding, the grinding position of the contact is usually wiped clean with a cleaning cloth. This is a contact cleaning method that easily generates static electricity, increasing the risk of live cleaning.

[0006] 3. The fallen iron chips and debris cannot be cleaned synchronously during the grinding process and can only be cleaned after grinding, which reduces the cleaning efficiency. At the same time, the fallen debris is easy to adhere to the surface of the contact or grinding wheel, which will seriously affect the grinding effect and efficiency. Summary of the invention

[0007] The object of the present invention is to provide a live grinding device and a grinding method for contacts of a switch of a transformer substation.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] Provided is a live grinding device for switch knife contacts of a substation, comprising two positioning plates, and two connecting plates are symmetrically arranged;

[0010] It also includes a controller, a sliding mechanism, an angle adjustment mechanism, a surface treatment mechanism and a purge mechanism;

[0011] The sliding mechanism is arranged on the top of the two connecting plates, and the sliding mechanism includes a mounting plate, a driving assembly, a slide plate, two sliders, two slide rails and four connecting plates. The mounting plate is fixed on the top of the two connecting plates, and the two slide rails are symmetrically arranged on the top of the mounting plate. Each slider is slidably arranged on the outer wall of a slide rail. The four connecting plates are respectively fixed on the top of the two sliders, the slide plate is fixed on the top of the four connecting plates, and the driving assembly is arranged between the mounting plate and the slide plate.

[0012] The angle adjustment mechanism is arranged on the top of the slide plate, and the angle adjustment mechanism comprises a support plate, a telescopic assembly and a rotating assembly, the telescopic assembly and the rotating assembly are both arranged on the top of the slide plate, and the support plate is fixed on the rotating assembly;

[0013] The surface treatment mechanism is arranged on the outer wall of the support plate, and the surface treatment mechanism includes a grinding wheel, a rotating rod and an electric control component. The rotating rod is rotatably arranged on the outer wall of the support plate through two limit blocks, a leakage current sensor is fixedly arranged on the outer wall of the rotating rod, the grinding wheel is fixedly arranged at one end of the rotating rod, and the electric control component is arranged between the rotating rod and the support plate;

[0014] The purge mechanism is arranged on the outer wall of the support plate, and the purge mechanism includes a diffuser, a transmission assembly, a blowing assembly and a speed increasing assembly. The blowing assembly is arranged on the outer wall of the support plate, the speed increasing assembly is arranged between the transmission assembly and the blowing assembly, and the transmission assembly is arranged between the rotating rod and the speed increasing assembly to accelerate the wind force. The diffuser is fixed on the blowing assembly, and the leakage current sensor, the drive assembly, the telescopic assembly and the electronic control assembly are all electrically connected to the controller.

[0015] Furthermore, the electronic control component includes a first motor, a first bevel gear and a second bevel gear. The first motor is fixed on the support plate, the first bevel gear is fixed on its output end, the second bevel gear is fixed on the rotating rod, the first bevel gear and the second bevel gear are meshingly connected, and the first motor is electrically connected to the controller.

[0016] Furthermore, the speed increasing assembly includes a first gear and a second gear, and a first rotating shaft and a second rotating shaft are rotatably arranged on the outer wall of the support plate respectively, the first gear is fixed at one end of the first rotating shaft, and the second gear is fixed on the second rotating shaft, the first gear and the second gear are meshed and connected, and the first gear is larger than the second gear.

[0017] Furthermore, the blowing assembly includes a wind tube, a fan and a delivery pipe. The fan is fixed on the second rotating shaft, the wind tube is fixed on the support plate, the second rotating shaft is rotatably connected to the wind tube, the delivery pipe is fixed at one end of the wind tube away from the fan, the diffusion pipe is fixedly connected to one end of the delivery pipe away from the wind tube, and two air inlet holes are provided at one end of the wind tube close to the fan, and a filter plate is fixedly provided inside each air inlet hole.

[0018] Furthermore, the transmission assembly includes a driving wheel, a driven wheel and a belt. The driving wheel is fixed at one end of the rotating rod away from the grinding wheel, the driven wheel is fixed at the other end of the first rotating shaft, and the belt sleeve is arranged between the driving wheel and the driven wheel.

[0019] Furthermore, a rectangular through hole is integrally formed on the outer wall of one end of the air duct close to the fan, and a semiconductor cooling sheet is fitted inside the rectangular through hole, and the semiconductor cooling sheet is electrically connected to the controller.

[0020] Furthermore, the driving motor includes a second motor, a screw and a driving block. Two support blocks are symmetrically arranged on the top of the mounting plate. The screw is rotatably arranged between the two support blocks. The second motor is fixed on the outer wall of one of the support blocks, and its output end is fixedly connected to one end of the screw. The driving block is fixed at the bottom of the skateboard, the screw is threadedly connected to the driving block, and the second motor is electrically connected to the controller.

[0021] Furthermore, the telescopic assembly includes an electric push rod, a push block, two plug rods and two racks. Two guide rails are symmetrically arranged on the top of the skateboard. Each rack is slidably arranged on the top of a guide rail. Each plug rod is fixed on the outer wall of one end of a rack. The two plug rods are fixedly connected to the push block. The electric push rod is fixedly arranged on the top of the skateboard, and its output end is fixedly connected to the push block. The electric push rod is electrically connected to the controller.

[0022] Furthermore, the rotating assembly includes a rotating column and two third gears. The rotating column is rotatably arranged on the top of the skateboard through two limit plates. The two third gears are fixed on the rotating column. The support plate is fixedly connected to the rotating column through two adapter plates. Each third gear is meshed with a rack.

[0023] A method for grinding a live grinding device for a switch contact of a substation includes the following steps:

[0024] S1: Installation and fixation of this device and the robot arm:

[0025] Since the switch knife switch of the substation generally has a certain installation height, two positioning plates are designed, and each positioning plate is symmetrically designed with two screw holes, so that the device is conveniently connected to the existing robot arm bolts through the two positioning plates, and then the device is extended to the contact of the switch knife switch through the robot arm for grinding.

[0026] S2: Live grinding of contact rust and safety control:

[0027] When grinding the contacts of the substation switch knife switch, firstly, the grinding wheel is extended to fit the rusted part of the contact through the robot's mechanical arm, and then the first motor is started through the controller. Since the first bevel gear is fixedly connected to its output end, the second bevel gear is fixedly connected to the rotating rod, the first bevel gear and the second bevel gear are meshed and connected, and the grinding wheel is fixedly connected to the rotating rod, thereby driving the grinding wheel to rotate and grinding the rusted part of the contact.

[0028] The leakage current sensor is designed on the outer wall of the rotating rod fixedly connected to the grinding wheel. It can monitor the working status of the device in real time during the grinding process to ensure the safety of live working.

[0029] S3: Synchronous operation of grinding, cleaning and cooling of rusted areas:

[0030] When the rotating rod rotates and drives the grinding wheel to rotate, the driving wheel is fixedly connected to the end of the rotating rod away from the grinding wheel, the driven wheel is fixedly connected to the other end of the first rotating shaft, and the driving wheel and the driven wheel are connected by a belt sleeve. Since the first gear is fixedly connected to the first rotating shaft, the second gear is fixedly connected to the second rotating shaft, the first gear and the second gear are meshed and connected, and the first gear is larger than the second gear, thereby driving the second rotating shaft to rotate and speeding up the second rotating shaft to increase the wind force blown out by the fan and improve the effect of blowing away rust debris from contact grinding.

[0031] When the second shaft rotates, since the second shaft is rotatably connected to the wind tube, the fan is fixedly connected to the second shaft, one end of the wind tube is designed with two air inlet holes, the other end of the wind tube is fixedly connected to the delivery pipe, and the delivery pipe is fixedly connected to the diffusion pipe. Under the action of the two air inlet holes, wind enters the delivery pipe from the wind tube, and then quickly blows to the grinding place through the diffusion pipe, blowing away the rust debris polished off to improve the cleanliness of the contacts after grinding. This isolated cleaning method is used instead of the existing method of wiping the contacts with a cleaning cloth, thereby improving the safety of live cleaning operations.

[0032] While the fan rotates to blow air to clean the grinding area, the semiconductor refrigeration plate is started through the controller. The bottom of the semiconductor refrigeration plate is the heating end, which faces the outside of the air duct, and the other end is the cooling end, which faces the inside of the air duct. It cools the airflow entering the air duct, thereby cooling the wind blowing toward the grinding area of ​​the contact, and reduces the grinding temperature while cleaning the rust debris dropped during grinding, so as to prevent the contact from continuing to heat up and causing burning, which affects the normal operation and safety of the equipment, while improving the safety and efficiency of the operation.

[0033] S4: Adjustment operation of different grinding angles:

[0034] Since the rust position on the contact surface is random, it is sometimes necessary to adjust the grinding angle. When the grinding angle needs to be adjusted, the electric push rod is started through the controller to shrink its output end. Since its output end is fixedly connected to the two plug rods through the push block, each plug rod is fixedly connected to a rack, and each rack is slidably connected to a guide rail, the two racks are driven to slide inside the two guide rails toward one end close to the second motor. Since the rotating column is rotatably connected to the slide plate through two limit plates, the two third gears are fixedly connected to the rotating shaft, and the support plate is fixedly connected to the rotating column through two adapter plates, each third gear is meshed with a rack, thereby driving the rotating column and the grinding wheel on the support plate to rotate so as to rotate to a grinding angle that fits the rust.

[0035] The second motor is started through the controller, so that its output end drives the lead screw to rotate. Since the lead screw is threadedly connected to the drive block, the drive block is fixedly connected to the bottom of the skateboard, and the skateboard is fixedly connected to two sliders through four connecting plates. Each slider is slidably connected to a slide rail, thereby driving the skateboard and the grinding wheel thereon to slide horizontally, and grinding can be performed along the axial direction of the contact. The robot does not need to move horizontally, and the grinding requirements of rust at different positions of the entire contact can be met.

[0036] Beneficial effects of the present invention:

[0037] 1. The present invention designs a controller, a sliding mechanism, an angle adjustment mechanism, a surface treatment mechanism and a purge mechanism, and through the cooperation of the five, and at the same time designs a leakage current sensor, it can monitor the working status of the device in real time during the grinding process to ensure the safety of live working, solve the problem that power outages cannot be carried out in high-power consumption areas, and realize live working.

[0038] 2. The present invention designs a blowing mechanism, namely a diffuser, a transmission assembly, a blowing assembly and a speed increasing assembly, which can simultaneously blow air to the grinding position during grinding to blow fallen rust debris and the like away from the grinding wheel or the contact, and uses an isolation cleaning method to replace the existing contact wiping cleaning method to avoid the generation of static electricity, thereby reducing the risk of live cleaning.

[0039] 3. The present invention designs a blowing mechanism, namely a diffuser, a transmission assembly, a blowing assembly and a speed increasing assembly, which can simultaneously blow air to the grinding position during grinding, thereby effectively preventing fallen debris from adhering to the surface of the contact or the grinding wheel, thereby helping to improve the grinding effect and efficiency of the rusted contact.

[0040] 4. The present invention designs a semiconductor cooling plate. When the fan rotates to blow air to clean the polishing area, the semiconductor cooling plate is started by a controller. The bottom of the semiconductor cooling plate is a heating end, which faces the outside of the wind tube, and the other end is a cooling end, which faces the inside of the wind tube. It cools the airflow entering the wind tube, thereby cooling the wind blowing toward the contact polishing area, and reduces the polishing temperature while cleaning the rust debris dropped during polishing, so as to prevent the contact from continuing to heat up and causing burning, which affects the normal operation and safety of the equipment, while improving the safety and efficiency of the operation.

[0041] 5. The present invention designs a transmission component, which can simultaneously perform air blowing cleaning to clean the fallen debris while grinding the rusted position of the contact, without the need to clean after grinding. The cleaning work is completed when the grinding work is completed, thereby improving the cleaning efficiency, achieving dual purposes of one machine, and further improving the practicality of the device.

[0042] 6. The present invention designs a transmission component so that the surface treatment mechanism and the blowing mechanism can operate in conjunction, that is, while grinding the rusted position of the contact, blowing and cleaning of the fallen debris are carried out simultaneously, avoiding the two mechanisms from operating independently, thereby reducing the number of driving sources used in the device, reducing the power consumption of the device, and thus reducing the maintenance cost of the contacts. At the same time, it is beneficial to reduce the overall structure of the device, reduce the cost and volume, and facilitate use with the existing robot's mechanical arm.

[0043] 7. The present invention can polish and clean different rusted positions of the switch knife contact by designing a sliding mechanism and an angle adjustment mechanism, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings in the embodiment of the present invention are briefly introduced below.

[0045] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0046] Figure 2 for Figure 1 A in the enlarged view;

[0047] Figure 3 The three-dimensional structure diagram of the surface treatment mechanism and the purge mechanism of the present invention is shown in FIG. Figure 1 ;

[0048] Figure 4 for Figure 3 The enlarged view of point B in the figure;

[0049] Figure 5 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0050] Figure 6 for Figure 5 The enlarged view of point C in the figure;

[0051] Figure 7 It is a schematic diagram of the planar structure of the present invention;

[0052] Figure 8 It is a three-dimensional structural schematic diagram of the sliding mechanism and the angle adjustment mechanism of the present invention;

[0053] Fig. 9 The three-dimensional structure diagram of the surface treatment mechanism and the purge mechanism of the present invention is shown in FIG. Figure 2 ;

[0054] In the figure: positioning plate 1, mounting plate 2, drive assembly 3, skateboard 4, slider 5, slide rail 6, connecting plate 7, support plate 8, telescopic assembly 9, rotating assembly 10, grinding wheel 11, rotating rod 12, electronic control assembly 13, diffuser 14, transmission assembly 15, blowing assembly 16, speed increasing assembly 17, first motor 18, first bevel gear 19, second bevel gear 20, first gear 21, second gear 22, air cylinder 23, fan 24, conveying pipe 25, filter plate 26, driving wheel 27, driven wheel 28, belt 29, semiconductor cooling sheet 30, second motor 31, screw 32, driving block 33, electric push rod 34, push block 35, plug rod 36, rack 37, rotating column 38, third gear 39, leakage current sensor 40. DETAILED DESCRIPTION

[0055] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0056] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0057] Reference Figures 1 to 9 As shown, a live grinding device for the switch knife contact of a substation includes two positioning plates 1. Since the switch knife of the substation generally has a certain installation height, two positioning plates 1 are designed. Each positioning plate 1 is symmetrically designed with two screw holes, so that the device is conveniently connected to the mechanical arm of an existing robot through the two positioning plates 1, and then the device is extended to the contact of the switch knife for grinding through the mechanical arm. The two connecting plates 7 are symmetrically arranged;

[0058] It also includes a controller, a sliding mechanism, an angle adjustment mechanism, a surface treatment mechanism and a purge mechanism;

[0059] The sliding mechanism is arranged on the top of the two connecting plates 7, and the sliding mechanism includes a mounting plate 2, a driving assembly 3, a slide plate 4, two sliders 5, two slide rails 6 and four connecting plates 7. The mounting plate 2 is fixedly arranged on the top of the two connecting plates 7, and the two slide rails 6 are symmetrically arranged on the top of the mounting plate 2. Each slider 5 is slidably arranged on the outer wall of a slide rail 6. The four connecting plates 7 are respectively fixedly arranged on the top of the two sliders 5, and the slide plate 4 is fixedly arranged on the top of the four connecting plates 7. The driving assembly 3 is arranged between the mounting plate 2 and the slide plate 4;

[0060] The angle adjustment mechanism is arranged on the top of the slide plate 4, and the angle adjustment mechanism includes a support plate 8, a telescopic component 9 and a rotating component 10. The telescopic component 9 and the rotating component 10 are both arranged on the top of the slide plate 4, and the support plate 8 is fixed on the rotating component 10;

[0061] The surface treatment mechanism is arranged on the outer wall of the support plate 8, and the surface treatment mechanism includes a grinding wheel 11, a rotating rod 12 and an electric control component 13. The rotating rod 12 is rotatably arranged on the outer wall of the support plate 8 through two limit blocks. A leakage current sensor 40 is fixedly arranged on the outer wall of the rotating rod 12. The leakage current sensor 40 can monitor the working state of the device in real time during the grinding process to ensure the safety of live working. The grinding wheel 11 is fixedly arranged at one end of the rotating rod 12, and the electric control component 13 is arranged between the rotating rod 12 and the support plate 8;

[0062] The purge mechanism is arranged on the outer wall of the support plate 8, and the purge mechanism includes a diffuser 14, a transmission assembly 15, a blowing assembly 16 and a speed increasing assembly 17. The blowing assembly 16 is arranged on the outer wall of the support plate 8, and the speed increasing assembly 17 is arranged between the transmission assembly 15 and the blowing assembly 16. The transmission assembly 15 is arranged between the rotating rod 12 and the speed increasing assembly 17 to accelerate the wind force. The diffuser 14 is fixed on the blowing assembly 16. The diffuser 14 can blow the wind radially to the grinding position to increase the purge range, which is beneficial to increase the cleaning range. The leakage current sensor 40, the drive assembly 3, the telescopic assembly 9 and the electronic control assembly 13 are all electrically connected to the controller.

[0063] Reference Figures 1 to 9 As shown, the electric control component 13 includes a first motor 18, a first bevel gear 19 and a second bevel gear 20. The first motor 18 is fixed on the support plate 8, the first bevel gear 19 is fixed on its output end, the second bevel gear 20 is fixed on the rotating rod 12, the first bevel gear 19 and the second bevel gear 20 are meshed and connected, and the first motor 18 is electrically connected to the controller. When the substation switch knife switch contacts are polished, the grinding wheel 11 is first extended to fit the rusted part of the contact through the robot's mechanical arm, and then the first motor 18 is started through the controller. Since the first bevel gear 19 is fixedly connected to its output end, the second bevel gear 20 is fixedly connected to the rotating rod 12, the first bevel gear 19 and the second bevel gear 20 are meshed and connected, and the grinding wheel 11 is fixedly connected to the rotating rod 12, thereby driving the grinding wheel 11 to rotate and polishing the rusted part of the contact.

[0064] Reference Figures 1 to 9As shown, the speed increasing assembly 17 includes a first gear 21 and a second gear 22. The first rotating shaft and the second rotating shaft are rotatably arranged on the outer wall of the support plate 8 respectively. The first gear 21 is fixedly arranged at one end of the first rotating shaft, and the second gear 22 is fixedly arranged on the second rotating shaft. The first gear 21 and the second gear 22 are meshed and connected, and the first gear 21 is larger than the second gear 22. When the first rotating shaft rotates, since the first gear 21 is fixedly connected to the first rotating shaft, and the second gear 22 is fixedly connected to the second rotating shaft, the first gear 21 and the second gear 22 are meshed and connected, and the first gear 21 is larger than the second gear 22, thereby driving the second rotating shaft to rotate and increasing the speed of the second rotating shaft to increase the wind force blown out by the fan 24 and improve the blowing effect on the rust debris of the contact grinding and cutting.

[0065] Reference Figures 1 to 9 As shown, the blowing assembly 16 includes a wind tube 23, a fan 24 and a conveying pipe 25. The fan 24 is fixed on the second rotating shaft, the wind tube 23 is fixed on the support plate 8, the second rotating shaft is rotatably connected to the wind tube 23, the conveying pipe 25 is fixed to the end of the wind tube 23 away from the fan 24, the diffusion pipe 14 is fixedly connected to the end of the conveying pipe 25 away from the wind tube 23, and the end of the wind tube 23 close to the fan 24 is provided with two air inlet holes, and a filter plate 26 is fixedly provided inside each air inlet hole. When the second rotating shaft rotates, due to the rotation of the second rotating shaft and the wind tube 23 The fan 24 is connected with the second rotating shaft, one end of the wind tube 23 is designed with two air inlet holes, the other end of the wind tube 23 is fixedly connected with the delivery pipe 25, and the delivery pipe 25 is fixedly connected with the diffuser 14. Under the action of the two air inlet holes, the wind enters the delivery pipe 25 from the wind tube 23, and then quickly blows to the grinding place through the diffuser 14, so as to blow away the rust debris after grinding, so as to improve the cleanliness of the contact after grinding. This isolation cleaning method is used to replace the existing method of wiping the contact with a cleaning cloth, thereby improving the safety of the live cleaning operation.

[0066] Reference Figures 1 to 9 As shown, the transmission assembly 15 includes a driving wheel 27, a driven wheel 28 and a belt 29. The driving wheel 27 is fixedly arranged at one end of the rotating rod 12 away from the grinding wheel 11, and the driven wheel 28 is fixedly arranged at the other end of the first rotating shaft. The belt 29 is sleeved between the driving wheel 27 and the driven wheel 28. When the rotating rod 12 rotates to drive the grinding wheel 11 to rotate, since the driving wheel 27 is fixedly connected to the end of the rotating rod 12 away from the grinding wheel 11, and the driven wheel 28 is fixedly connected to the other end of the first rotating shaft, the driving wheel 27 and the driven wheel 28 are sleeved and connected by the belt 29, thereby driving the first rotating shaft to rotate.

[0067] Reference Figures 1 to 9As shown, a rectangular through hole is integrally formed on the outer wall of one end of the air duct 23 close to the fan 24, and a semiconductor refrigeration sheet 30 is fitted inside the rectangular through hole. The semiconductor refrigeration sheet 30 is electrically connected to the controller. When the fan 24 rotates to blow air to clean the grinding area, the semiconductor refrigeration sheet 30 is started by the controller. The bottom of the semiconductor refrigeration sheet 30 is a heating end, which faces the outside of the air duct 23, and the other end is a cooling end, which faces the inside of the air duct 23, and cools the airflow entering the air duct 23, thereby cooling the wind blowing toward the contact grinding area, and reduces the grinding temperature while cleaning the rust debris dropped during grinding, so as to prevent the contact from being burned due to continuous heating and affecting the normal operation and safety of the equipment, while improving the safety and efficiency of the operation.

[0068] Reference Figures 1 to 9 As shown, the driving motor includes a second motor 31, a screw rod 32 and a driving block 33. Two supporting blocks are symmetrically arranged on the top of the mounting plate 2. The screw rod 32 is rotatably arranged between the two supporting blocks. The second motor 31 is fixedly arranged on the outer wall of one of the supporting blocks, and its output end is fixedly connected to one end of the screw rod 32. The driving block 33 is fixedly arranged at the bottom of the slide plate 4. The screw rod 32 is threadedly connected to the driving block 33. The second motor 31 is electrically connected to the controller. The second motor 31 is started by the controller, so that its output end drives the screw rod 32 to rotate. Since the screw rod 32 is threadedly connected to the driving block 33, the driving block 33 is fixedly connected to the bottom of the slide plate 4. The slide plate 4 is fixedly connected to the two sliders 5 through four connecting plates 7. Each slider 5 is slidably connected to a slide rail 6, thereby driving the slide plate 4 and the grinding wheel 11 thereon to slide horizontally, and grinding can be performed along the axial direction of the contact. The grinding requirements of rust at different positions of the entire contact can be met without the need for horizontal movement of the robot.

[0069] Reference Figures 1 to 9 As shown, the telescopic assembly 9 includes an electric push rod 34, a push block 35, two plug rods 36 and two racks 37. Two guide rails are symmetrically arranged on the top of the slide plate 4. Each rack 37 is slidably arranged on the top of a guide rail. Each plug rod 36 is fixedly arranged on the outer wall of one end of a rack 37. The two plug rods 36 are fixedly connected to the push block 35. The electric push rod 34 is fixedly arranged on the top of the slide plate 4, and its output end is fixedly connected to the push block 35. The electric push rod 34 is electrically connected to the controller. Since the rust position on the contact surface is random, it is sometimes necessary to adjust the grinding angle. When the grinding angle needs to be adjusted, the electric push rod 34 is started by the controller to shrink its output end. Since its output end is fixedly connected to the two plug rods 36 through the push block 35, each plug rod 36 is fixedly connected to a rack 37, and each rack 37 is slidably connected to a guide rail, thereby driving the two racks 37 to slide inside the two guide rails toward one end close to the second motor 31.

[0070] Reference Figures 1 to 9As shown, the rotating assembly 10 includes a rotating column 38 and two third gears 39. The rotating column 38 is rotatably arranged on the top of the slide plate 4 through two limit plates. The two third gears 39 are fixedly arranged on the rotating column 38. The support plate 8 is fixedly connected to the rotating column 38 through two adapter plates. Each third gear 39 is meshed with a rack 37. When the two racks 37 slide inside the two guide rails toward one end close to the second motor 31, since the rotating column 38 is rotatably connected to the slide plate 4 through the two limit plates, the two third gears 39 are fixedly connected to the rotating shaft, and the support plate 8 is fixedly connected to the rotating column 38 through two adapter plates. Each third gear 39 is meshed with a rack 37, thereby driving the rotating column 38 and the grinding wheel 11 on the support plate 8 to rotate so as to rotate to a grinding angle that fits the rusted area.

[0071] A method for grinding a live grinding device for a switch contact of a substation includes the following steps:

[0072] S1: Installation and fixation of this device and the robot arm:

[0073] Since the switch knife switch of the substation generally has a certain installation height, two positioning plates 1 are designed, and each positioning plate 1 is symmetrically designed with two screw holes, so that the device is conveniently connected to the existing robot arm bolts through the two positioning plates 1, and then the device is extended to the contact of the switch knife switch for grinding through the robot arm.

[0074] S2: Live grinding of contact rust and safety control:

[0075] When grinding the contacts of the substation switch knife switch, firstly, the grinding wheel 11 is extended to fit the rusted part of the contact through the robot's mechanical arm, and then the first motor 18 is started through the controller. Since the first bevel gear 19 is fixedly connected to its output end, the second bevel gear 20 is fixedly connected to the rotating rod 12, the first bevel gear 19 and the second bevel gear 20 are meshed and connected, and the grinding wheel 11 is fixedly connected to the rotating rod 12, thereby driving the grinding wheel 11 to rotate and grinding the rusted part of the contact.

[0076] The leakage current sensor 40 is designed on the outer wall of the rotating rod 12 fixedly connected to the grinding wheel 11, and can monitor the working status of the device in real time during the grinding process to ensure the safety of live working.

[0077] S3: Synchronous operation of grinding, cleaning and cooling of rusted areas:

[0078] While the rotating rod 12 rotates to drive the grinding wheel 11 to rotate, the driving wheel 27 is fixedly connected to the end of the rotating rod 12 away from the grinding wheel 11, and the driven wheel 28 is fixedly connected to the other end of the first rotating shaft. The driving wheel 27 and the driven wheel 28 are connected by a belt 29. Since the first gear 21 is fixedly connected to the first rotating shaft, the second gear 22 is fixedly connected to the second rotating shaft, the first gear 21 and the second gear 22 are meshed and connected, and the first gear 21 is larger than the second gear 22, thereby driving the second rotating shaft to rotate and increasing the speed of the second rotating shaft to increase the wind force blown out by the fan 24, thereby improving the effect of blowing away rust debris from contact grinding.

[0079] When the second shaft rotates, since the second shaft is rotatably connected to the wind tube 23, the fan 24 is fixedly connected to the second shaft, one end of the wind tube 23 is designed with two air inlet holes, and the other end of the wind tube 23 is fixedly connected to the delivery pipe 25, and the delivery pipe 25 is fixedly connected to the diffuser 14. Under the action of the two air inlet holes, wind enters the delivery pipe 25 from the wind tube 23, and then quickly blows toward the grinding area through the diffuser 14, blowing away the rust debris polished off to improve the cleanliness of the contacts after grinding. This isolated cleaning method is used instead of the existing method of wiping the contacts with a cleaning cloth, thereby improving the safety of live cleaning operations.

[0080] While the fan 24 rotates to blow air to clean the grinding area, the semiconductor cooling plate 30 is started by the controller. The bottom of the semiconductor cooling plate 30 is the heating end, which faces the outside of the wind tube 23, and the other end is the cooling end, which faces the inside of the wind tube 23. It cools the airflow entering the wind tube 23, thereby cooling the wind blowing toward the grinding area of ​​the contact, and has the effect of reducing the grinding temperature while cleaning the rust debris dropped by grinding, so as to prevent the contact from continuing to heat up and causing burning, which affects the normal operation and safety of the equipment, while improving the safety and efficiency of the operation.

[0081] S4: Adjustment operation of different grinding angles:

[0082] Since the rust position on the contact surface is random, it is sometimes necessary to adjust the grinding angle. When the grinding angle needs to be adjusted, the electric push rod 34 is started by the controller to shrink its output end. Since its output end is fixedly connected to the two plug rods 36 through the push block 35, each plug rod 36 is fixedly connected to a rack 37, and each rack 37 is slidably connected to a guide rail, thereby driving the two racks 37 to slide inside the two guide rails toward one end close to the second motor 31. Since the rotating column 38 is rotatably connected to the slide plate 4 through two limit plates, the two third gears 39 are fixedly connected to the rotating shaft, and the support plate 8 is fixedly connected to the rotating column 38 through two adapter plates. Each third gear 39 is meshed with a rack 37, thereby driving the rotating column 38 and the grinding wheel 11 on the support plate 8 to rotate so as to rotate to a grinding angle that fits the rust.

[0083] The second motor 31 is started through the controller, so that its output end drives the lead screw 32 to rotate. Since the lead screw 32 is threadedly connected to the drive block 33, the drive block 33 is fixedly connected to the bottom of the slide plate 4. The slide plate 4 is fixedly connected to the two sliders 5 through four connecting plates 7. Each slider 5 is slidably connected to a slide rail 6, thereby driving the slide plate 4 and the grinding wheel 11 thereon to slide horizontally, and grinding can be performed along the axial direction of the contact. The requirements for grinding rust at different positions of the entire contact can be met without the need for horizontal movement of the robot.

[0084] The working principle of the present invention is as follows: when grinding the contacts of the switch knife of the substation, the grinding wheel 11 is first extended to fit the rusted part of the contact through the robot's mechanical arm, and then the first motor 18 is started through the controller. Since the first bevel gear 19 is fixedly connected to its output end, the second bevel gear 20 is fixedly connected to the rotating rod 12, the first bevel gear 19 and the second bevel gear 20 are meshed and connected, and the grinding wheel 11 is fixedly connected to the rotating rod 12, thereby driving the grinding wheel 11 to rotate and grinding the rusted part of the contact.

[0085] When the rotating rod 12 rotates to drive the grinding wheel 11 to rotate, since the driving wheel 27 is fixedly connected to the end of the rotating rod 12 away from the grinding wheel 11, and the driven wheel 28 is fixedly connected to the other end of the first rotating shaft, the driving wheel 27 and the driven wheel 28 are connected by a belt 29, thereby driving the first rotating shaft to rotate.

[0086] When the first rotating shaft rotates, since the first gear 21 is fixedly connected to the first rotating shaft, and the second gear 22 is fixedly connected to the second rotating shaft, the first gear 21 and the second gear 22 are meshed and connected, and the first gear 21 is larger than the second gear 22, thereby driving the second rotating shaft to rotate and speeding up the second rotating shaft to increase the wind force blown out by the fan 24 and improve the effect of blowing away the rust debris from the contact grinding and cutting.

[0087] When the second shaft rotates, since the second shaft is rotatably connected to the wind tube 23, the fan 24 is fixedly connected to the second shaft, one end of the wind tube 23 is designed with two air inlet holes, and the other end of the wind tube 23 is fixedly connected to the delivery pipe 25, and the delivery pipe 25 is fixedly connected to the diffuser 14. Under the action of the two air inlet holes, wind enters the delivery pipe 25 from the wind tube 23, and then quickly blows toward the grinding area through the diffuser 14, blowing away the rust debris polished off to improve the cleanliness of the contacts after grinding. This isolated cleaning method is used instead of the existing method of wiping the contacts with a cleaning cloth, thereby improving the safety of live cleaning operations.

[0088] While the fan 24 rotates to blow air to clean the grinding area, the semiconductor cooling plate 30 is started by the controller. The bottom of the semiconductor cooling plate 30 is the heating end, which faces the outside of the wind tube 23, and the other end is the cooling end, which faces the inside of the wind tube 23. It cools the airflow entering the wind tube 23, thereby cooling the wind blowing toward the grinding area of ​​the contact, and has the effect of reducing the grinding temperature while cleaning the rust debris dropped by grinding, so as to prevent the contact from continuing to heat up and causing burning, which affects the normal operation and safety of the equipment, while improving the safety and efficiency of the operation.

[0089] Since the rust position on the contact surface is random, it is sometimes necessary to adjust the grinding angle. When the grinding angle needs to be adjusted, the electric push rod 34 is started by the controller to shrink its output end. Since its output end is fixedly connected to two plug rods 36 through a push block 35, each plug rod 36 is fixedly connected to a rack 37, and each rack 37 is slidably connected to a guide rail, the two racks 37 are driven to slide inside the two guide rails toward one end close to the second motor 31.

[0090] When the two racks 37 slide inside the two guide rails toward one end close to the second motor 31, since the rotating column 38 is rotatably connected to the slide plate 4 through two limit plates, the two third gears 39 are fixedly connected to the rotating shaft, and the support plate 8 is fixedly connected to the rotating column 38 through two adapter plates, each third gear 39 is meshed with a rack 37, thereby driving the rotating column 38 and the grinding wheel 11 on the support plate 8 to rotate so as to rotate to a grinding angle that fits the rusted area.

[0091] The second motor 31 is started through the controller, so that its output end drives the lead screw 32 to rotate. Since the lead screw 32 is threadedly connected to the drive block 33, the drive block 33 is fixedly connected to the bottom of the slide plate 4. The slide plate 4 is fixedly connected to the two sliders 5 through four connecting plates 7. Each slider 5 is slidably connected to a slide rail 6, thereby driving the slide plate 4 and the grinding wheel 11 thereon to slide horizontally, and grinding can be performed along the axial direction of the contact. The requirements for grinding rust at different positions of the entire contact can be met without the need for horizontal movement of the robot.

Claims

1. A live grinding device for switch contacts of a substation, comprising two positioning plates (1) and two connecting plates (7) symmetrically arranged, characterized in that: It also includes a controller, a sliding mechanism, an angle adjustment mechanism, a surface treatment mechanism and a purge mechanism; The sliding mechanism is arranged on the top of the two connecting plates (7), and the sliding mechanism comprises a mounting plate (2), a driving assembly (3), a slide plate (4), two sliders (5), two slide rails (6) and four connecting plates (7); the mounting plate (2) is fixedly arranged on the top of the two connecting plates (7); the two slide rails (6) are symmetrically arranged on the top of the mounting plate (2); each slider (5) is slidably arranged on the outer wall of a slide rail (6); the four connecting plates (7) are respectively fixedly arranged on the top of the two sliders (5); the slide plate (4) is fixedly arranged on the top of the four connecting plates (7); and the driving assembly (3) is arranged between the mounting plate (2) and the slide plate (4); The angle adjustment mechanism is arranged on the top of the slide plate (4), and the angle adjustment mechanism comprises a support plate (8), a telescopic assembly (9) and a rotating assembly (10), the telescopic assembly (9) and the rotating assembly (10) are both arranged on the top of the slide plate (4), and the support plate (8) is fixed on the rotating assembly (10); The surface treatment mechanism is arranged on the outer wall of the support plate (8), and comprises a grinding wheel (11), a rotating rod (12) and an electric control component (13); the rotating rod (12) is rotatably arranged on the outer wall of the support plate (8) through two limit blocks; a leakage current sensor is fixedly arranged on the outer wall of the rotating rod (12); the grinding wheel (11) is fixedly arranged on one end of the rotating rod (12); and the electric control component (13) is arranged between the rotating rod (12) and the support plate (8); The purge mechanism is arranged on the outer wall of the support plate (8), and comprises a diffuser (14), a transmission component (15), a blowing component (16) and a speed increasing component (17). The blowing component (16) is arranged on the outer wall of the support plate (8), the speed increasing component (17) is arranged between the transmission component (15) and the blowing component (16), the transmission component (15) is arranged between the rotating rod (12) and the speed increasing component (17) to accelerate the wind force, the diffuser (14) is fixedly arranged on the blowing component (16), and the leakage current sensor, the driving component (3), the telescopic component (9) and the electric control component (13) are all electrically connected to the controller.

2. A live grinding device for switch contacts of a substation according to claim 1, characterized in that: The electric control component (13) comprises a first motor (18), a first bevel gear (19) and a second bevel gear (20); the first motor (18) is fixed on the support plate (8); the first bevel gear (19) is fixed on the output end thereof; the second bevel gear (20) is fixed on the rotating rod (12); the first bevel gear (19) and the second bevel gear (20) are meshedly connected; and the first motor (18) is electrically connected to the controller.

3. A live grinding device for switch contacts of a substation according to claim 2, characterized in that: The speed increasing assembly (17) comprises a first gear (21) and a second gear (22); a first rotating shaft and a second rotating shaft are rotatably arranged on the outer wall of the support plate (8), the first gear (21) is fixedly arranged at one end of the first rotating shaft, the second gear (22) is fixedly arranged on the second rotating shaft, the first gear (21) and the second gear (22) are meshedly connected, and the first gear (21) is larger than the second gear (22).

4. A live grinding device for switch contacts of a substation according to claim 3, characterized in that: The blowing assembly (16) comprises a wind tube (23), a fan (24) and a delivery pipe (25); the fan (24) is fixedly arranged on the second rotating shaft; the wind tube (23) is fixedly arranged on the support plate (8); the second rotating shaft is rotatably connected to the wind tube (23); the delivery pipe (25) is fixedly arranged at one end of the wind tube (23) away from the fan (24); the diffusion pipe (14) is fixedly connected to one end of the delivery pipe (25) away from the wind tube (23); one end of the wind tube (23) close to the fan (24) is provided with two air inlet holes; a filter plate (26) is fixedly arranged inside each air inlet hole.

5. The live grinding device for switch contacts of a substation according to claim 4 is characterized in that: The transmission assembly (15) comprises a driving wheel (27), a driven wheel (28) and a belt (29), wherein the driving wheel (27) is fixedly arranged at one end of the rotating rod (12) away from the grinding wheel (11), the driven wheel (28) is fixedly arranged at the other end of the first rotating shaft, and the belt (29) is sleeved between the driving wheel (27) and the driven wheel (28).

6. A live grinding device for switch contacts of a substation according to claim 5, characterized in that: A rectangular through hole is integrally formed on the outer wall of one end of the air cylinder (23) close to the fan (24), a semiconductor cooling sheet (30) is fitted inside the rectangular through hole, and the semiconductor cooling sheet (30) is electrically connected to the controller.

7. A live grinding device for switch contacts of a substation according to claim 6, characterized in that: The driving motor comprises a second motor (31), a screw rod (32) and a driving block (33); two supporting blocks are symmetrically arranged on the top of the mounting plate (2); the screw rod (32) is rotatably arranged between the two supporting blocks; the second motor (31) is fixedly arranged on the outer wall of one of the supporting blocks, and its output end is fixedly connected to one end of the screw rod (32); the driving block (33) is fixedly arranged on the bottom of the slide plate (4); the screw rod (32) is threadedly connected to the driving block (33); and the second motor (31) is electrically connected to the controller.

8. The live grinding device for switch contacts of a substation according to claim 7 is characterized in that: The telescopic assembly (9) comprises an electric push rod (34), a push block (35), two insertion rods (36) and two racks (37). Two guide rails are symmetrically arranged on the top of the slide plate (4). Each rack (37) is slidably arranged on the top of a guide rail. Each insertion rod (36) is fixedly arranged on the outer wall of one end of a rack (37). The two insertion rods (36) are fixedly connected to the push block (35). The electric push rod (34) is fixedly arranged on the top of the slide plate (4). The output end of the electric push rod (34) is fixedly connected to the push block (35). The electric push rod (34) is electrically connected to the controller.

9. A live grinding device for switch contacts of a substation according to claim 8, characterized in that: The rotating assembly (10) comprises a rotating column (38) and two third gears (39). The rotating column (38) is rotatably arranged on the top of the slide plate (4) through two limit plates. The two third gears (39) are fixedly arranged on the rotating column (38). The support plate (8) is fixedly connected to the rotating column (38) through two adapter plates. Each third gear (39) is meshedly connected to a rack (37).

10. A method for grinding a live grinding device for a switch contact of a substation, comprising the following steps: S1: Installation and fixation of this device and the robot arm: Since the switch of the substation generally has a certain installation height, two positioning plates (1) are designed, and each positioning plate (1) is symmetrically designed with two screw holes, so that the device can be conveniently connected to the mechanical arm of the existing robot through the two positioning plates (1) and then the device can be extended to the contact of the switch through the mechanical arm for grinding. S2: Live grinding of contact rust and safety control: When the substation switch knife switch contact is being polished, the polishing wheel (11) is first extended to fit the corroded part of the contact through the robot arm, and then the first motor (18) is started through the controller. Since the first bevel gear (19) is fixedly connected to its output end, the second bevel gear (20) is fixedly connected to the rotating rod (12), the first bevel gear (19) and the second bevel gear (20) are meshed and connected, and the polishing wheel (11) is fixedly connected to the rotating rod (12), thereby driving the polishing wheel (11) to rotate and polishing the corroded part of the contact. The leakage current sensor is designed on the outer wall of a rotating rod (12) fixedly connected to the grinding wheel (11), and can monitor the working state of the device in real time during the grinding process to ensure the safety of live working. S3: Synchronous operation of grinding, cleaning and cooling of rusted areas: When the rotating rod (12) rotates to drive the grinding wheel (11) to rotate, the driving wheel (27) is fixedly connected to one end of the rotating rod (12) away from the grinding wheel (11), and the driven wheel (28) is fixedly connected to the other end of the first rotating shaft. The driving wheel (27) and the driven wheel (28) are sleeved and connected by a belt (29). Since the first gear (21) is fixedly connected to the first rotating shaft, and the second gear (22) is fixedly connected to the second rotating shaft, the first gear (21) and the second gear (22) are meshed and connected, and the first gear (21) is larger than the second gear (22), thereby driving the second rotating shaft to rotate and increasing the speed of the second rotating shaft to increase the wind force blown out by the fan (24). When the second rotating shaft rotates, the second rotating shaft is rotatably connected to the wind tube (23), the fan (24) is fixedly connected to the second rotating shaft, one end of the wind tube (23) is designed with two air inlet holes, the other end of the wind tube (23) is fixedly connected to the delivery pipe (25), and the delivery pipe (25) is fixedly connected to the diffusion pipe (14). Under the action of the two air inlet holes, wind enters the delivery pipe (25) from the wind tube (23), and then quickly blows toward the grinding area through the diffusion pipe (14), so as to blow away the rust debris produced by grinding. While the fan (24) rotates to blow air to clean the polishing area, the semiconductor cooling plate (30) is started by the controller. The bottom of the semiconductor cooling plate (30) is a heating end, which faces the outside of the wind tube (23), and the other end is a cooling end, which faces the inside of the wind tube (23). The airflow entering the wind tube (23) is cooled, thereby cooling the air blowing toward the polishing area of ​​the contact, thereby cleaning the rust debris dropped by polishing and reducing the polishing temperature. S4: Adjustment operation of different grinding angles: Since the rust position on the contact surface is random, it is sometimes necessary to adjust the grinding angle. When the grinding angle needs to be adjusted, the electric push rod (34) is started by the controller to shrink its output end. Since its output end is fixedly connected to the two plug rods (36) through the push block (35), each plug rod (36) is fixedly connected to a rack (37), and each rack (37) is slidably connected to a guide rail, the two racks (37) are driven to slide inside the two guide rails toward one end close to the second motor (31). Since the rotating column (38) is rotatably connected to the slide plate (4) through two limit plates, the two third gears (39) are fixedly connected to the rotating shaft, and the support plate (8) is fixedly connected to the rotating column (38) through two adapter plates. Each third gear (39) is meshed with a rack (37), thereby driving the rotating column (38) and the grinding wheel (11) on the support plate (8) to rotate to rotate to a grinding angle that fits the rusted area. The second motor (31) is started by a controller, so that its output end drives the lead screw (32) to rotate. Since the lead screw (32) is threadedly connected to the drive block (33), the drive block (33) is fixedly connected to the bottom of the slide plate (4). The slide plate (4) is fixedly connected to two sliders (5) via four connecting plates (7). Each slider (5) is slidably connected to a slide rail (6), thereby driving the slide plate (4) and the grinding wheel (11) thereon to slide horizontally. Grinding can be performed along the axial direction of the contact. The grinding requirements for rust at different positions of the entire contact can be met without the need for horizontal movement of the robot.

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