A high voltage transformer chassis machining and grinding device

Abstract

The present invention relates to the field of grinding processing technology, and specifically to a chassis processing and grinding device for a high-voltage transformer; it comprises a support platform, a frame is arranged above the support platform; a screw rod is arranged between the frame and the support platform; the screw rod is rotatably connected to the frame; the present invention sets a slider and a pressure sensor for cooperation, and when the polishing wheel is used to grind the upper end surface of the transformer chassis, the pressure applied by the polishing wheel to the transformer chassis is the restoring force of the connecting spring sensed by the pressure sensor, so that the staff can adjust the contact pressure between the polishing wheel and the transformer chassis according to the data transmitted by the pressure sensor, thereby eliminating the need for the user to manually press down the polishing wheel to grind the transformer chassis, reducing the influence of human factors, ensuring the polishing and grinding effect of the polishing wheel, and preventing excessive pressure from causing mechanical damage to the surface of the transformer chassis by the polishing wheel, so that the practicality of the present invention is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding processing, in particular to a grinding device for processing a chassis of a high-voltage transformer. Background Art

[0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are primary coil, secondary coil and iron core (magnetic core). Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. Transformers can be divided into distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type transformer test transformers, corner transformers, high current transformers, excitation transformers, etc.

[0003] The transformer needs to be installed inside the chassis when in use. On the one hand, in order to isolate the transformer from the outside and protect the transformer inside, when producing the transformer chassis, it is necessary to first design a sheet metal drawing that meets the requirements according to the size and appearance requirements of the transformer, and then cut, bend, stamp and other processing techniques on the sheet metal according to the drawings. The sheet metal parts produced are welded to form the required shell; however, after welding, the transformer shell may have welding slag, uneven welds and other problems on its surface. These problems not only affect the appearance, but also its electromagnetic properties, corrosion resistance and wear resistance. For this reason, the shell needs to be ground and polished, and finally the paint spraying process is carried out to prevent the transformer shell from being affected by oxidation and corrosion during use;

[0004] The existing transformer shell is mostly ground by a grinding and polishing machine. However, when using the grinding and polishing machine to polish the transformer shell, the user needs to press down manually to ensure the polishing effect and quality, because manual pressing can control the contact pressure between the polishing tool and the transformer shell, so as to achieve uniform surface treatment; however, the pressing force of different users is different. If the pressure applied is too light, the polishing effect will be poor. If the pressure applied is too large, it is easy to cause mechanical damage to the surface of the transformer shell;

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a chassis processing and grinding device for a high-voltage transformer, which solves the above technical problems. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art, the present invention proposes a chassis processing and grinding device for a high-voltage transformer. The present invention arranges the cooperation between a slider and a pressure sensor. When the polishing wheel is used to grind the upper end surface of the transformer chassis, the pressure applied by the polishing wheel to the transformer chassis is the restoring force of the connecting spring sensed by the pressure sensor, so that the staff can adjust the contact pressure between the polishing wheel and the transformer chassis according to the data transmitted by the pressure sensor, thereby eliminating the need for the user to manually press down the polishing wheel to grind the transformer chassis, reducing the influence of human factors, thereby ensuring the polishing and grinding effect of the polishing wheel, and preventing excessive pressure from causing mechanical damage to the surface of the transformer chassis by the polishing wheel, thereby effectively improving the practicality of the present invention.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a high-voltage transformer chassis processing and grinding device described in the present invention comprises:

[0008] A support platform, a frame is arranged above the support platform; a screw rod is arranged between the frame and the support platform; the screw rod is rotatably connected to the frame; a mounting plate is spirally connected to the surface of the screw rod; a polishing wheel is installed below the mounting plate; a driving motor is fixedly installed on one side of the mounting plate; the driving motor is used to drive the screw rod to rotate; the support platform is slidably connected to the frame,

[0009] Servo motor, a mounting groove is provided at the lower end of the mounting plate; the polishing wheel is slidably connected in the mounting groove; a slider is slidably connected in the mounting groove; the polishing wheel is rotatably connected to the slider; the end of the slider away from the polishing wheel is connected to the bottom of the mounting groove through a connecting spring; the servo motor is installed at the upper end of the frame; the servo motor is used to drive the polishing wheel to rotate; a pressure sensor is embedded in the bottom of the mounting groove;

[0010] A clamping unit is installed on the support platform; the clamping unit is used to clamp and fix the transformer chassis.

[0011] Preferably, a bevel gear set is arranged between the servo motor and the polishing wheel; the bevel gear set includes a bevel gear shaft and a bevel gear ring; the bevel gear ring is fixedly connected to one end of the polishing wheel; a slot is provided on the output shaft of the servo motor; the bevel gear shaft is slidably connected in the slot; the bevel gear shaft is meshed with the bevel gear ring; the bevel gear shaft is connected to the bottom of the slot via a reset spring.

[0012] Preferably, the frame includes a fixed frame and a mounting frame; the fixed frame is slidably connected to the support platform; the screw rod is rotatably connected to the mounting frame; the fixed frame and the mounting frame are connected via an electro-hydraulic push rod.

[0013] Preferably, the clamping unit includes an L-shaped plate; a hydraulic push rod is fixedly connected to one side of the L-shaped plate; screws are rotatably connected to both sides of the support platform; the threads at both ends of the screw are arranged oppositely; the hydraulic push rod is connected to the screw by helical transmission; a stepper motor is fixedly installed on one side of the support platform; the stepper motor is used to drive the screw to rotate.

[0014] Preferably, the output shaft of the stepper motor is provided with a groove; a connecting rod is slidably connected in the groove; the connecting rod is connected to the bottom of the groove by a supporting spring; an electromagnetic ring is inlaid in the bottom of the groove; the end of the screw rod close to the stepper motor is fixedly connected to a bevel gear ring; the end of the connecting rod close to the screw rod is fixedly connected to a bevel gear shaft meshing with the bevel gear ring; an engaging block is fixedly connected to the side wall of the frame; a worm is provided at the lower end of the engaging block; the worm is meshed with the engaging block; the worm is rotatably connected to the support platform; the worm and the output shaft of the stepper motor are connected by a transmission belt.

[0015] Preferably, a slot is provided on the inner ring wall of the transmission belt; a circular groove is provided on the output shaft surface of the stepper motor; an insertion rod is slidably connected in the circular groove; the insertion rod is connected to the bottom of the circular groove by a fixed spring; and a magnet is embedded in one end of the connecting rod close to the electromagnetic ring.

[0016] Preferably, an airbag is provided at the slot opening of the mounting slot; one end of the airbag close to the bottom of the mounting slot is rotatably connected to the polishing wheel; an air hole is opened at the lower end of the airbag; and an electromagnetic plate is inlaid at the bottom of the mounting slot.

[0017] Preferably, two airbags are provided; the two airbags are distributed on both sides of the polishing wheel; the air holes of the two airbags are arranged obliquely; the air holes of the two airbags are distributed staggeredly.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention cooperates with a slider and a pressure sensor. When the polishing wheel is used to grind the upper end surface of the transformer case, the pressure applied by the polishing wheel to the transformer case is the restoring force of the connecting spring sensed by the pressure sensor, so that the staff can adjust the contact pressure between the polishing wheel and the transformer case according to the data transmitted by the pressure sensor, thereby eliminating the need for the user to manually press down the polishing wheel to grind the transformer case, reducing the influence of human factors, thereby ensuring the polishing and grinding effect of the polishing wheel and preventing excessive pressure from causing mechanical damage to the surface of the transformer case by the polishing wheel, thereby effectively improving the practicality of the present invention.

[0020] The present invention arranges the air holes of the two air bags to be staggered in distribution in order to avoid cross interference of the air flows ejected from the air holes of the two air bags, thereby ensuring that the metal particles located on the upper end surface of the transformer chassis can be blown off quickly and effectively, avoiding friction damage to the upper end surface of the transformer chassis caused by the presence of metal particles during the rotation of the polishing wheel, thereby improving the grinding and polishing effect of the polishing wheel on the transformer chassis, and effectively improving the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the present invention;

[0024] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0025] Figure 4 yes Figure 2 The enlarged view of point B in the middle;

[0026] Figure 5 is a transmission schematic diagram of the worm gear used in the present invention;

[0027] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0028] In the figure: 1, support table; 11, frame; 111, fixed frame; 112, mounting frame; 113, electro-hydraulic push rod; 12, screw rod; 121, mounting plate; 122, polishing wheel; 123, servo motor; 13, drive motor; 14, mounting groove; 141, slider; 142, connecting spring; 143, pressure sensor; 15, bevel gear shaft; 151, bevel gear ring; 152, slot; 153, reset spring; 16, L-shaped plate ;161, hydraulic push rod;162, screw;2, stepping motor;21, groove;211, connecting rod;212, supporting spring;213, electromagnetic ring;22, bevel gear ring;221, bevel gear shaft;222, meshing block;23, worm;231, transmission belt;232, slot;24, circular groove;241, plug rod;242, fixing spring;243, magnet;25, air bag;251, air hole;252, electromagnetic plate. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 6 As shown, the chassis processing and grinding device of a high-voltage transformer described in the present invention comprises:

[0031] A support platform 1 is provided with a frame 11 above the support platform 1; a screw rod 12 is provided between the frame 11 and the support platform 1; the screw rod 12 is rotatably connected to the frame 11; a mounting plate 121 is spirally connected to the surface of the screw rod 12; a polishing wheel 122 is installed below the mounting plate 121; a driving motor 13 is fixedly installed on one side of the mounting plate 121; the driving motor 13 is used to drive the screw rod 12 to rotate; the support platform 1 is slidably connected to the frame 11,

[0032] Servo motor 123, a mounting groove 14 is provided at the lower end of the mounting plate 121; the polishing wheel 122 is slidably connected in the mounting groove 14; a slider 141 is slidably connected in the mounting groove 14; the polishing wheel 122 is rotatably connected to the slider 141; one end of the slider 141 away from the polishing wheel 122 is connected to the bottom of the mounting groove 14 through a connecting spring 142; the servo motor 123 is installed at the upper end of the frame 11; the servo motor 123 is used to drive the polishing wheel 122 to rotate; a pressure sensor 143 is embedded in the bottom of the mounting groove 14;

[0033] A clamping unit is installed on the support platform 1; the clamping unit is used to clamp and fix the transformer chassis.

[0034] As an embodiment of the present invention, a bevel gear set is arranged between the servo motor 123 and the polishing wheel 122; the bevel gear set includes a bevel gear shaft 15 and a bevel gear ring 151; the bevel gear ring 151 is fixedly connected to one end of the polishing wheel 122; the output shaft of the servo motor 123 is provided with a slot 152; the bevel gear shaft 15 is slidably connected in the slot 152; the bevel gear shaft 15 is meshed with the bevel gear ring 151; the bevel gear shaft 15 is connected to the bottom of the slot 152 via a reset spring 153.

[0035] As an embodiment of the present invention, the frame 11 includes a fixed frame 111 and a mounting frame 112; the fixed frame 111 is slidably connected to the support platform 1; the screw rod 12 is rotatably connected to the mounting frame 112; the fixed frame 111 and the mounting frame 112 are connected via an electro-hydraulic push rod 113.

[0036] As an embodiment of the present invention, the clamping unit includes an L-shaped plate 16; a hydraulic push rod 161 is fixedly connected to one side of the L-shaped plate 16; screws 162 are rotatably connected to both sides of the support platform 1; the threads at both ends of the screw 162 are arranged oppositely; the hydraulic push rod 161 is connected to the screw 162 by spiral transmission; a stepper motor 2 is fixedly installed on one side of the support platform 1; the stepper motor 2 is used to drive the screw 162 to rotate.

[0037] As an embodiment of the present invention, the output shaft of the stepper motor 2 is provided with a groove 21; a connecting rod 211 is slidably connected in the groove 21; the connecting rod 211 is connected to the bottom of the groove 21 by a support spring 212; an electromagnetic ring 213 is inlaid at the bottom of the groove 21; the end of the screw 162 close to the stepper motor 2 is fixedly connected to the bevel gear ring 22; the end of the connecting rod 211 close to the screw 162 is fixedly connected to the bevel gear shaft 221 meshing with the bevel gear ring 22; the side wall of the frame 11 is fixedly connected to an engaging block 222; a worm 23 is provided at the lower end of the engaging block 222; the worm 23 is meshed with the engaging block 222; the worm 23 is rotatably connected to the support platform 1; the worm 23 and the output shaft of the stepper motor 2 are connected by a transmission belt 231 for belt drive.

[0038] As an embodiment of the present invention, the inner ring wall of the transmission belt 231 is provided with a slot 232; the output shaft surface of the stepping motor 2 is provided with a circular groove 24; a plug rod 241 is slidably connected in the circular groove 24; the plug rod 241 is connected to the bottom of the circular groove 24 by a fixing spring 242; the end of the connecting rod 211 close to the electromagnetic ring 213 is inlaid with a magnet 243;

[0039] During operation, the existing transformer chassis are mostly ground by a grinding and polishing machine. However, when the transformer chassis is polished by the grinding and polishing machine, the user needs to manually press down to ensure the polishing effect and quality, because the manual pressing down can control the contact pressure between the polishing wheel 122 and the transformer chassis, so as to achieve uniform surface treatment; however, the pressing force of different users is different. If the pressure applied is too light, the polishing effect will be poor. If the pressure applied is too large, it is easy to cause mechanical damage to the surface of the transformer chassis.

[0040] In this regard, the present invention sets the cooperation between the slider 141 and the pressure sensor 143. When the polishing wheel 122 is used to polish the upper end surface of the transformer case, the pressure applied by the polishing wheel 122 to the transformer case is the restoring force of the connecting spring 142 sensed by the pressure sensor 143, so that the staff can adjust the contact pressure between the polishing wheel 122 and the transformer case according to the data transmitted by the pressure sensor 143, thereby eliminating the need for the user to manually press down the polishing wheel 122 to polish the transformer case, reducing the influence of human factors, ensuring the polishing and grinding effect of the polishing wheel 122, and preventing excessive pressure from causing mechanical damage to the surface of the transformer case by the polishing wheel 122, thereby effectively improving the practicality of the present invention.

[0041] In the initial state, the electro-hydraulic push rod 113 is in an extended state, and the connecting rod 211 is located in the groove 21 under the pull of the supporting spring 212, and the bevel gear shaft 221 at one end of the connecting rod 211 away from the groove 21 does not contact the bevel gear ring 22, and the insert rod 241 extends out of the circular groove 24 and penetrates into the card groove 232 under the support force of the fixing spring 242; when the user places the chassis of the transformer on the supporting platform 1, the electromagnetic ring 213 is controlled to be energized so that the electromagnetic ring 213 can generate the same magnetic pole as the magnet 243, so that the magnet 243 is pushed by the magnetic repulsion force to stretch the fixing spring 242 out of the groove 21, and at this time, the magnet 243 pushes the connecting rod 211 connected thereto to extend out of the groove The groove 21 allows the connecting rod 211 to drive the bevel gear shaft 221 away from one end of the groove 21 to approach the bevel gear ring 22 until the bevel gear shaft 221 is meshed with the bevel gear ring 22, so that the stepping motor 2 can drive the bevel gear ring 22 to rotate through the connecting rod 211 and the bevel gear shaft 221, so that the bevel gear ring 22 drives the screw 162 connected thereto to rotate, so that the screw 162 can drive the hydraulic push rod 161 connected thereto with a spiral transmission to move in a direction of approaching each other, so that the hydraulic push rod 161 drives the L-shaped plate 16 to approach each other until the L-shaped plate 16 contacts the transformer chassis, so that the L-shaped plate 16 can clamp the two sides of the transformer chassis, and the screw 162 is provided with two, The two screw rods 162 are distributed on the front and rear sides of the support platform 1, and the two screw rods 162 are connected by belt transmission. By controlling the extension of the hydraulic push rods 161 on the front and rear screw rods 162, the hydraulic push rods 161 of the front and rear screw rods 162 can push the L-shaped plate 16 to clamp the transformer chassis front and back, so that the four L-shaped plates 16 can fix the front, back, left and right of the transformer chassis, so that the transformer chassis can be stabilized on the support platform 1 to ensure that the transformer chassis remains stable during the grinding process; and when the electromagnetic ring 213 is energized, because the electromagnetic ring 213 is directly opposite to the circular groove 24, the energized electromagnetic ring 213 will insert the rod 241 to generate a magnetic adsorption force, so that The insertion rod 241 can squeeze the fixing spring 242 into the circular groove 24, so that the insertion rod 241 is separated from the transmission belt 231, and the transmission belt 231 is made of PTFE material, so that the friction between the transmission belt 231 and the output shaft of the stepper motor 2 is small, so during the operation of the stepper motor 2, the stepper motor 2 will not drive the worm 23 to rotate through the transmission belt 231, so that the stepper motor 2 can drive the worm 23 and the screw 162 separately; greatly reducing the interference of the support platform 1 with the screw 162 or the worm 23; and the surface of the worm 23 is fixedly connected with a protrusion that meshes with the slot 232 of the transmission belt 231, thereby ensuring that the worm 23 can always effectively transmit with the transmission belt 231;After the L-shaped plate 16 clamps the transformer chassis, the transformer chassis is located directly below the polishing wheel 122, and the electro-hydraulic push rod 113 is controlled to contract, so that the electro-hydraulic push rod 113 pulls the mounting frame 112 down, so that the mounting frame 112 can drive the polishing wheel 122 to descend, so that the polishing wheel 122 contacts the transformer chassis; as the mounting frame 112 continues to descend, the polishing wheel 122 is blocked by the transformer chassis and squeezes the connecting spring 142 to enter the mounting groove 14; The slider 141 in the mounting groove 14 is rotatably connected, and the slider 141 is connected to the bottom of the mounting groove 14 through the connecting spring 142. Therefore, when the polishing wheel 122 enters the mounting groove 14, the polishing wheel 122 will squeeze the connecting spring 142 through the slider 141. Since the end of the connecting spring 142 away from the polishing wheel 122 is connected to the pressure sensor 143, the compressed connecting spring 142 not only generates a driving force on the slider 141 but also generates a driving force on the pressure sensor 143 under the action of its own restoring force. The pushed slider 141 will drive the polishing wheel 122 to press against the upper end surface of the transformer chassis. At this time, the pressure sensed by the pressure sensor 143 is the pressure applied by the polishing wheel 122 to the upper end surface of the transformer chassis. Moreover, the pressure value sensed by the pressure sensor 143 will be transmitted to the staff's computer in the form of data, so as to facilitate the staff's observation, and by adjusting the contraction length of the electro-hydraulic push rod 113, the polishing effect of the polishing wheel 122 on the transformer chassis can be controlled, thereby ensuring the polishing effect of the polishing wheel 122 while preventing excessive pressure from causing mechanical damage to the surface of the transformer chassis by the polishing wheel 122; improving the polishing quality of the transformer chassis surface, thereby avoiding the problem of uneven and bumpy surface of the transformer chassis due to poor polishing effect in the subsequent painting process; avoiding the formation of mottled or blistering coating, improving the adhesion between the coating and the transformer chassis, so as to improve the antioxidant capacity of the transformer chassis, so that the service life of the transformer chassis is improved;

[0042] After the pressure between the polishing wheel 122 and the transformer chassis is adjusted, the drive motor 13 is controlled to drive the screw rod 12 to rotate, so that the screw rod 12 can drive the mounting plate 121 connected to its spiral transmission to drive the polishing wheel 122 to roll along the upper end surface of the transformer, so that the polishing wheel 122 can roll along the upper end surface of the transformer chassis to one side edge of the transformer chassis, and the servo motor 123 is controlled to operate so that the servo motor 123 can drive the polishing wheel 122 to rotate, so that the polishing wheel 122 polishes and grinds the upper end surface of the transformer chassis. At the same time, the drive motor 13 is controlled to rotate in the opposite direction, so that the drive motor 13 drives the screw rod 121 to rotate. 2 drives the polishing wheel 122 to move to the other side of the transformer chassis; at this time, the driving motor 13 can drive the mounting plate 121 to drive the polishing wheel 122 to polish the upper end surface of the transformer chassis, until the polishing wheel 122 moves to the other side of the upper end surface of the transformer chassis, at this time, the polishing wheel 122 completes the polishing of the upper end surface of the transformer chassis, and then the hydraulic push rod 161 contracts, so that the L-shaped plates 16 of the two screw rods 162 are separated from each other and do not contact the transformer chassis. At this time, the user turns the transformer chassis over until the polishing of the five surfaces of the transformer chassis is completed, and then the transformer chassis is removed and replaced with a new transformer chassis to be polished;

[0043] If the width of the transformer chassis is greater than the width of the polishing wheel 122, after the polishing wheel 122 moves from one side of the upper end surface of the transformer chassis to the other side, the electro-hydraulic push rod 113 is first controlled to push the mounting frame 112 to drive the polishing wheel 122 to rise, and then the electromagnetic ring 213 is controlled to be powered off, so that the connecting rod 211 enters the groove 21 under the pull of the restoring force of the support spring 212, so that the connecting rod 211 drives the bevel gear shaft 221 to separate from the bevel gear ring 22, and the plug rod 241 is pushed by the restoring force of the fixed spring 242 to extend the plug rod 241 out of the circular groove 24 and enter the card slot 232; at this time, the stepper motor 2 is connected to the worm 23 through the transmission belt 231, and the stepper motor 2 is controlled to rotate at this time, so that the stepper motor 2 can The worm 23 is driven to rotate by the transmission belt 231. Since the worm 23 is meshed with the meshing block 222, the worm 23 can drive the meshing block 222 to drive the support table 1 to move when it rotates, so that the support table 1 can drive the transformer case clamped at the upper end to move along the axial direction of the polishing wheel 122, so that the support table 1 drives the transformer case to move a width of the polishing wheel 122, and then the electro-hydraulic push rod 113 is controlled to descend, so that the electro-hydraulic push rod 113 drives the polishing wheel 122 to polish the transformer case below, so that the upper end surfaces of the transformer cases of different widths are all polished by the polishing wheel 122, thereby increasing the polishing range and polishing effect of the polishing wheel 122, and further improving the practicality of the present invention;

[0044] Since the polishing wheel 122 is slidably connected in the installation groove 14, in order to ensure that the servo motor 123 can always effectively drive the polishing wheel 122 to rotate, the bevel gear shaft 15 and the bevel gear ring 151 are arranged to cooperate, so that the bevel gear shaft 15 can extend out of the slot 152 and mesh with the bevel gear ring 151 under the push of the restoring force of the return spring 153. Since the bevel gear ring 151 is fixedly connected to the rotating shaft of the polishing wheel 122, the polishing wheel 122 will push the bevel gear shaft 15 through the bevel gear ring 151 to squeeze the return spring 153 into the polishing wheel 122 during the process of the polishing wheel 122 rising in the installation groove 14. Slot 152. Similarly, when the polishing wheel 122 is pushed out of the mounting slot 14 by the connecting spring 142, the bevel gear shaft 15 pushed by the reset spring 153 will extend out of the slot 152, so that when the polishing wheel 122 is lifted and lowered in the mounting slot 14, the bevel gear shaft 15 and the bevel gear ring 151 are always in a meshing state, so that the servo motor 123 can effectively drive the polishing wheel 122 through the bevel gear shaft 15 and the bevel gear ring 151, so that the polishing wheel 122 can effectively grind the chassis of the transformer, so that the practical application effect of the present invention is further improved.

[0045] As an embodiment of the present invention, an airbag 25 is provided at the slot of the mounting slot 14; one end of the airbag 25 close to the bottom of the mounting slot 14 is rotatably connected to the polishing wheel 122; an air hole 251 is opened at the lower end of the airbag 25; and an electromagnetic plate 252 is inlaid at the bottom of the mounting slot 14.

[0046] As an embodiment of the present invention, two airbags 25 are provided; the two airbags 25 are distributed on both sides of the polishing wheel 122; the air holes 251 of the two airbags 25 are arranged obliquely; the air holes 251 of the two airbags 25 are distributed staggered;

[0047] During operation, it is inevitable that the polished metal particles will be sputtered to the unpolished area of ​​the upper end surface of the transformer case during the polishing process of the polishing wheel 122. When the polishing wheel 122 falls to the unpolished area of ​​the transformer case and is pressed against the transformer case, the metal particles sputtered to the unpolished area are located between the polishing wheel 122 and the transformer case, resulting in an increase in the friction between the polishing wheel 122 and the transformer case, and also causing stress concentration at the location of the metal particles. As a result, during the rotation of the polishing wheel 122, friction damage to the transformer case will be caused. To this end, the present invention provides an air bag 25. In the initial state, the air holes 251 at the lower ends of the two air bags 25 are inclined toward the polishing wheel 122. When the polishing wheel 122 is changed After the upper end surface of the transformer chassis moves from one side to the other side, the electromagnetic plate 252 is first controlled to be energized, so that the electromagnetic plate 252 can generate a magnetic adsorption force on the polishing wheel 122, so that the polishing wheel 122 squeezes the connecting spring 142 under the adsorption of the electromagnetic plate 252 and enters the bottom of the mounting groove 14. At this time, the polishing wheel 122 is separated from the upper end surface of the transformer chassis; and in the process of the polishing wheel 122 entering the mounting groove 14, the polishing wheel 122 will pull the air bag 25 connected thereto to extend into the mounting groove 14, so that the external gas enters the air bag 25 through the air hole 251; through the setting of the electromagnetic plate 252, there is no need to repeatedly control the electro-hydraulic push rod 113 to push the mounting frame 112 up and down, and there is no need to repeatedly perform pressure control according to the value of the pressure sensor 143. The pressure regulation greatly shortens the adjustment time of the support platform 1, improves the overall grinding efficiency of the transformer chassis, and improves the practicality of the present invention; when the stepper motor 2 drives the support platform 1 to move to the desired position through the worm 23, the current passed through the control electromagnetic plate 252 is continuously reduced until the electromagnetic plate 252 is powered off. At this time, the slider 141 is continuously moved away from the bottom of the installation groove 14 under the push of the restoring force of the connecting spring 142, so that the slider 141 drives the polishing wheel 122 to descend until it contacts the transformer chassis; and in the process of the polishing wheel 122 descending, the polishing wheel 122 will generate an extrusion force on the airbag 25, so that the gas in the airbag 25 is ejected through the air hole 251; because the air hole 251 is inclined, the air hole 25 The gas ejected is blown obliquely toward the upper end surface of the transformer chassis below the polishing wheel 122, so that the metal particles remaining on the upper end surface of the transformer chassis due to sputtering can slide off from the upper end surface of the transformer under the blowing of the airflow, thereby ensuring that no metal particles remain between the polishing wheel 122 and the transformer chassis; and by setting the current passed through the electromagnetic plate 252 to be continuously reduced, the adsorption force generated by the electromagnetic plate 252 on the polishing wheel 122 is continuously weakened, so that the compressed connecting spring 142 continuously overcomes the adsorption force of the electromagnetic plate 252 to push the polishing wheel 122 down, so that the polishing wheel 122 slowly descends and contacts the transformer chassis, thereby extending the time for the gas in the airbag 25 to be ejected, and improving the pushing effect of the gas on the metal particles on the upper end surface of the transformer chassis;Furthermore, the air holes 251 of the two air bags 25 are arranged in a staggered distribution to avoid cross interference of the air flows ejected from the air holes 251 of the two air bags 25, thereby ensuring that the metal particles on the upper end surface of the transformer chassis can be blown off quickly and effectively, and avoiding friction damage to the upper end surface of the transformer chassis caused by the presence of metal particles during the rotation of the polishing wheel 122, thereby improving the polishing effect of the polishing wheel 122 on the transformer chassis, so that the practicality of the present invention is effectively improved. ;

[0048] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high voltage transformer chassis processing and grinding device, include: A support platform (1), wherein a frame (11) is arranged above the support platform (1); a screw rod (12) is arranged between the frame (11) and the support platform (1); the screw rod (12) is rotatably connected to the frame (11); a mounting plate (121) is spirally connected to the surface of the screw rod (12); a polishing wheel (122) is installed below the mounting plate (121); a driving motor (13) is fixedly installed on one side of the mounting plate (121); the driving motor (13) is used to drive the screw rod (12) to rotate; the support platform (1) is slidably connected to the frame (11), and is characterized in that: A servo motor (123), a mounting groove (14) is provided at the lower end of the mounting plate (121); the polishing wheel (122) is slidably connected in the mounting groove (14); a slider (141) is slidably connected in the mounting groove (14); the polishing wheel (122) is rotatably connected to the slider (141); one end of the slider (141) away from the polishing wheel (122) is connected to the bottom of the mounting groove (14) through a connecting spring (142); the servo motor (123) is mounted on the upper end of the frame (11); the servo motor (123) is used to drive the polishing wheel (122) to rotate; a pressure sensor (143) is embedded in the bottom of the mounting groove (14); A clamping unit, the clamping unit being mounted on a support platform (1); the clamping unit being used to clamp and fix the transformer chassis; The clamping unit comprises an L-shaped plate (16); a hydraulic push rod (161) is fixedly connected to one side of the L-shaped plate (16); screw rods (162) are rotatably connected to both sides of the support platform (1); threads at both ends of the screw rod (162) are arranged oppositely; the hydraulic push rod (161) is connected to the screw rod (162) by helical transmission; a stepping motor (2) is fixedly installed on one side of the support platform (1); the stepping motor (2) is used to drive the screw rod (162) to rotate; The output shaft of the stepper motor (2) is provided with a groove (21); a connecting rod (211) is slidably connected in the groove (21); the connecting rod (211) is connected to the groove bottom of the groove (21) via a supporting spring (212); an electromagnetic ring (213) is embedded in the groove bottom of the groove (21); a bevel gear ring (22) is fixedly connected to one end of the screw rod (162) close to the stepper motor (2); 2) is fixedly connected to one end of a bevel gear shaft (221) meshing with a bevel gear ring (22); a meshing block (222) is fixedly connected to the side wall of the frame (11); a worm (23) is arranged at the lower end of the meshing block (222); the worm (23) meshes with the meshing block (222); the worm (23) is rotatably connected to the support platform (1); the worm (23) is connected to the output shaft of the stepping motor (2) by a belt drive via a transmission belt (231); The inner ring wall of the transmission belt (231) is provided with a slot (232); the output shaft surface of the stepping motor (2) is provided with a circular groove (24); an insertion rod (241) is slidably connected in the circular groove (24); the insertion rod (241) is connected to the bottom of the circular groove (24) via a fixing spring (242); a magnet (243) is embedded at one end of the connecting rod (211) close to the electromagnetic ring (213); the electromagnetic ring (213) is directly opposite to the circular groove (24).

2. A high voltage transformer chassis machining and grinding device according to claim 1, Features: The frame (11) comprises a fixing frame (111) and a mounting frame (112); the fixing frame (111) is slidably connected to the support platform (1); the screw rod (12) is rotationally connected to the mounting frame (112); the fixing frame (111) and the mounting frame (112) are connected via an electro-hydraulic push rod (113).

3. A high voltage transformer chassis machining and grinding device according to claim 2, Features: A bevel gear set is arranged between the servo motor (123) and the polishing wheel (122); the bevel gear set comprises a bevel gear shaft (15) and a bevel gear ring (151); the bevel gear ring (151) is fixedly connected to one end of the polishing wheel (122); the output shaft of the servo motor (123) is provided with a slot (152); the bevel gear shaft (15) is slidably connected in the slot (152); the bevel gear shaft (15) is meshed with the bevel gear ring (151); the bevel gear shaft (15) is connected to the bottom of the slot (152) via a return spring (153).

4. A high voltage transformer chassis machining and grinding device according to claim 3, Features: An air bag (25) is provided at the slot opening of the mounting slot (14); one end of the air bag (25) close to the bottom of the mounting slot (14) is rotatably connected to the polishing wheel (122); an air hole (251) is provided at the lower end of the air bag (25); and an electromagnetic plate (252) is inlaid at the bottom of the mounting slot (14).

5. A high voltage transformer chassis machining and grinding device according to claim 4, Features: Two airbags (25) are provided; the two airbags (25) are distributed on both sides of the polishing wheel (122); the air holes (251) of the two airbags (25) are arranged obliquely; and the air holes (251) of the two airbags (25) are distributed in a staggered manner.

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