A transformer shell bending device

Abstract

The present application relates to the technical field of shell bending, and specifically discloses a transformer shell bending device, which comprises a rack, a base fixedly arranged on the rack, and a pressing plate arranged on the rack in a sliding manner, characterized in that both sides of the base are provided with a placing frame rotating around the base; the rack is provided with a transmission assembly connected with the placing frame; the pressing plate is provided with a top plate; when the pressing plate moves downward to bend the plate on the base, the top plate cooperates with the transmission assembly to drive the placing frame to rotate synchronously from a horizontal state to an inclined state; a placing groove is vertically and longitudinally arranged in the placing frame; the rack is provided with an adjusting assembly; the adjusting assembly is provided with a positioning rod; the adjusting assembly is used to drive the positioning rod to move longitudinally and vertically in the placing groove; and the plate is moved to the base through the two placing frames to bend the front and rear edges of the plate. The transformer shell bending device has the effect of improving the bending efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shell bending, and in particular to a transformer shell bending device. BACKGROUND

[0002] Bending is an important process link in transformer shell processing, and the specific angle and bending radius are adjusted according to actual conditions. The main bending positions include the edge of the tank cover, the inlet and outlet line pipe, the reinforcing rib and the mounting interface, etc. The purpose of bending is to ensure the structural strength, sealing, electrical safety, and facilitate installation and maintenance. The geometric shape formed by bending can improve the anti-twisting ability of the shell, reduce the deformation caused by external pressure, and also realize the close fitting between the shells, which can effectively prevent dust and moisture when used with sealing glue.

[0003] The patent document with publication number CN218108940U discloses a metal plate bending table for transformer production, which comprises a support frame, two limiting plates are fixed on the support frame, an extrusion groove is formed on the support frame, an extrusion block is arranged between the two limiting plates, and the extrusion block and the extrusion groove are mutually adapted. The metal plate to be bent is placed between the two limiting plates, the position of the metal plate is limited by the limiting plates, the extrusion assembly drives the extrusion block to move in the extrusion groove, because the bending blocks are arranged on both sides of the extrusion block, the inclined blocks are fixed on the bottom of the bending blocks, and the inclined blocks and the bending grooves are mutually adapted, so that when the extrusion block moves downward, the inclined blocks can be driven to rotate along the hinge between the bending block and the support frame, and then the extrusion block and the bending block can be perpendicular to each other, and the metal plate can be bent and processed.

[0004] However, the following problems still exist in this scheme. When the opposite front and rear edges of the shell plate need to be bent, after bending one side, the plate needs to be manually taken out and then turned around to bend the other side, especially for larger plates, the operation is more tedious. And after adjusting and replacing the position of the plate, the position of the plate needs to be repositioned, which affects the bending efficiency. SUMMARY

[0005] The present application provides a transformer shell bending device, which aims to solve the problem of tedious operation and low bending efficiency when bending the front and rear edges of the plate in related technologies.

[0006] The transformer shell bending device of the present application comprises a rack, a base fixedly arranged on the rack, a pressing plate arranged on the rack in an up-down sliding manner, and a placing frame rotating around the base arranged on both sides of the base;

[0007] A transmission assembly connected with the placing frame is arranged on the rack, a top plate is arranged on the pressing plate, and when the pressing plate moves downward to bend the plate on the base, the top plate cooperates with the transmission assembly to drive the placing frame to rotate synchronously from a horizontal state to an inclined state;

[0008] The placing slots are arranged in the placing frames in up-down direction, the adjusting assembly is arranged on the rack, the positioning rods are arranged on the adjusting assembly, the adjusting assembly is used to drive the positioning rods to move up-down and front-back in the placing slots, the plate is moved to the base through the two placing frames to move the front and back edges of the plate to be bent to the base respectively, the positioning rods corresponding to the side edges of the plate to be bent are moved to the outside of the placing slots, the positioning rods abut against the plate to position, when the bent edge is replaced, the extended positioning rod is moved down to reset, and another positioning rod is moved up to position the other side edge of the plate to be bent.

[0009] The effect is that initially, the two placing frames are in horizontal state, the plate is placed on one of the placing frames, the adjusting assembly adjusts the position of the positioning rod on the other placing frame according to the bending position, drives the positioning rod to move to the outside of the placing slot, pushes the plate to push the front edge of the plate to the base, at the same time, the front edge enters the other placing frame and abuts against the positioning rod outside the placing slot to position the plate, the pressing plate moves down to press the plate to bend, at the same time, the top plate cooperates with the transmission assembly to drive the two placing frames to rotate synchronously, after the front edge is bent, the extended positioning rod is retracted, the plate is pushed to the other plate, and the other positioning rod is moved to the outside of the placing slot to fix the back edge of the plate, the above operation is repeated to bend the plate again, the front and back edges of the plate are bent and positioned by moving the plate front-back through the two placing frames and the positioning rods, and the bending efficiency of the plate is improved.

[0010] Preferably, the transmission assembly comprises a gear one, a gear two, an intermediate piece and a connecting plate, the gear one and the gear two are both rotationally assembled on the rack, the gear one and the gear two are arranged as bevel gears, the gear two is provided with two corresponding to the two placing frames, the axis of the gear two is located on the same line as the base, the gear one is arranged between the two gears two and engages with the gear two, the connecting plate is arranged on the side surface of the gear two, the placing frame is connected with the connecting plate, the intermediate piece is arranged on the rack, the intermediate piece cooperates with the gear one, and the top plate drives the gear one to rotate through the intermediate piece.

[0011] The effect is that the top plate cooperates with the intermediate piece, the intermediate piece drives the gear one to rotate, the gear one drives the two placing frames to rotate synchronously through the gear two, so that the plate is in inclined state, and the inclination angle of the plate corresponds to the bending angle of the plate, and the bending effect of the plate is improved.

[0012] Preferably, the intermediate piece comprises a sliding block, a sliding rod and an intermediate gear, an oil cavity is arranged in the rack, the oil cavity is filled with hydraulic oil, the sliding block and the sliding rod are both up-down slidingly assembled on the rack, and the lower ends of the sliding block and the sliding rod both extend into the oil cavity, the sliding block is arranged below the top plate, the intermediate gear is connected with the gear one in the same axis, the sliding rod is provided with a tooth groove on the side surface in up-down direction, the tooth groove engages with the intermediate gear, and the sliding block moves down to push the sliding rod to move up through the hydraulic oil.

[0013] The effect is that the top plate and the sliding block abut, the pressing plate presses the plate, the sliding block is driven to move downward, the sliding block drives the sliding rod to move upward through the hydraulic oil, and the sliding rod moves to drive the gear to rotate through the gear slot and the intermediate gear.

[0014] Preferably, the cross section of the sliding block is larger than the cross section of the sliding rod.

[0015] The effect is that when the pressing plate presses the bent plate, the sliding rod moves a distance much larger than the sliding block, so that the placing frame can be rotated synchronously to correspond to the bending angle of the plate.

[0016] Preferably, the rack is provided with an elastic telescopic rod, the elastic telescopic rod is arranged on one side of the sliding rod, the elastic telescopic rod is connected with the upper end of the sliding rod, and the elastic telescopic rod is used to drive the sliding rod to move downward.

[0017] The effect is that after the pressing plate is separated from the plate, the elastic telescopic rod drives the sliding rod to move to the initial position, the sliding rod moves downward to reversely drive the sliding block to move upward, and simultaneously drives the placing frame to rotate back to the horizontal position.

[0018] Preferably, the rack is provided with a mounting plate, the mounting plate is provided with a mounting slot, the adjusting assembly comprises a driving member one, a lead screw one and a connecting part, the lead screw one is rotatably assembled in the mounting slot, the connecting part is slidably assembled in the mounting slot, the lead screw one is in threaded connection with the connecting part, the connecting part is connected with the positioning rod, and the driving member one is arranged on the mounting plate.

[0019] The effect is that the driving member one drives the lead screw one to rotate, the lead screw one drives the connecting part to move in the mounting slot, the connecting part drives the positioning rod to move, and the position in the front and back directions is adjusted.

[0020] Preferably, the connecting part comprises a connecting block in threaded connection with the lead screw one and a pushing member arranged on the connecting block, and the output end of the pushing member is connected with the positioning rod to drive the positioning rod to move upward and downward.

[0021] The effect is that the pushing member drives the positioning rod to move upward, and drives the positioning rod to move to the outside of the placing slot, so as to position the plate.

[0022] Preferably, the placing frame comprises two placing rods, the placing rods are arranged at intervals along the length direction of the base, and the placing rods are in sliding connection with the connecting plate.

[0023] The effect is that the placing rods slide relative to the connecting plate, the distance between the two placing rods is adjusted, and plates of different sizes are placed on the placing rods.

[0024] Preferably, the mounting plate and the adjusting assembly are both provided with two groups, the two groups of mounting plates correspond to the two placing rods one by one, the mounting plates are slidingly arranged on the rack, the sliding directions of the mounting plates and the placing rods are the same, the rack is provided with a control member, the control member is connected with the mounting plates and used for adjusting the positions of the mounting plates.

[0025] Its effect lies in that the mounting plates move synchronously on the rack while the placing rods move, so that the positioning rods are always in the placing grooves.

[0026] Preferably, the control member comprises a driving member two and a lead screw two, the lead screw two is rotatably arranged on the rack, the lead screw two is arranged along the sliding direction of the mounting plate, the driving member two is arranged on the rack, an output end of the driving member two is connected with the lead screw two, two thread grooves with opposite thread directions are formed in the lead screw two and correspond to the two mounting plates, and the lead screw two is in threaded connection with the mounting plates.

[0027] Its effect lies in that the driving member two drives the lead screw two to rotate, the lead screw two drives the two mounting plates to rotate in opposite directions, and the positions of the positioning rods are adjusted through the positioning rods in the placing grooves.

[0028] Beneficial effects:

[0029] The base is provided with the placing frames on both sides, and the positioning rods are arranged on the placing frames respectively, the plate moves forward and backward on the placing frames, the front edge or the rear edge of the plate moves to the base, the plate is positioned through the positioning rods, the bent edge is replaced quickly, and the processing efficiency of the plate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall structure schematic diagram of the embodiment of the present application.

[0031] Figure 2 is the structure schematic diagram of the placing frame in the embodiment of the present application.

[0032] Figure 3 is Figure 2 is the structure schematic diagram of A in the embodiment of the present application.

[0033] Figure 4 is the structure schematic diagram of the adjusting assembly in the embodiment of the present application.

[0034] Figure 5 is the state schematic diagram of the positioning rod in the embodiment of the present application.

[0035] Figure 6 is the state schematic diagram of the placing frame in the embodiment of the present application.

[0036] Figure 7 is the structure schematic diagram of the intermediate piece in the embodiment of the present application.

[0037] Figure 8 Figure 1 is a structural schematic diagram of the elastic telescopic rod in the embodiment of the present application.

[0038] Reference signs:

[0039] 01, plate; 1, rack; 11, base; 12, pressing plate; 121, top plate; 13, control member; 131, driving member two; 132, lead screw two; 2, placing frame; 21, placing rod; 3, transmission assembly; 31, gear one; 32, gear two; 33, intermediate member; 331, sliding block; 332, sliding rod; 333, intermediate gear; 34, connecting plate; 4, positioning rod; 5, adjusting assembly; 51, driving member one; 52, lead screw one; 53, connecting part; 531, connecting block; 532, pushing member; 6, placing groove; 7, oil cavity; 8, elastic telescopic rod; 9, mounting plate; 91, mounting groove. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0041] As shown in Figures 1 to 8 the transformer shell bending device of the present application, comprising a rack 1, a base 11, a pressing plate 12, a placing frame 2, a transmission assembly 3, a positioning rod 4, and an adjusting assembly 5 are arranged on the rack 1, the base 11 is fixedly arranged on the rack 1, the pressing plate 12 is slidingly assembled on the rack 1, the pressing plate 12 is arranged above the base 11, a bending groove for cooperating with the pressing plate 12 to bend is formed on the base 11, two placing frames 2 are arranged on both sides of the base 11 and are rotatably arranged around the base 11, the transmission assembly 3 is arranged on the rack 1 and connected with the placing frame 2, a top plate 121 is arranged below the pressing plate 12 and corresponds to the transmission assembly 3, the adjusting assembly 5 is arranged on the rack 1, the positioning rod 4 is arranged on the adjusting assembly 5, a placing groove 6 is formed in the placing frame 2 and penetrates the placing frame 2 from top to bottom, the positioning rod 4 is located in the placing groove 6, and the adjusting assembly 5 is used to drive the positioning rod 4 to move up and down and back and forth in the placing groove 6.

[0042] In the initial state, the two placing frames 2 are in a horizontal state, and the plate 01 to be bent for making the transformer shell is placed between the base 11 and the pressing plate 12 through the placing frame 2, and the two edges of the plate 01 to be bent can be moved to the base 11 by pushing the plate 01 back and forth.

[0043] Referring to Figure 5 , Figure 6In the processing, first, the front edge of the plate 01 is moved to the base 11, and at the same time, the front edge of the plate 01 is moved to the other placing frame 2. The adjusting assembly 5 drives the positioning rod 4 corresponding to the front edge of the plate 01 to move upward, so that the positioning rod 4 moves to the outside of the placing groove 6. The plate 01 is moved so that the front edge thereof abuts against the positioning rod 4, and the plate 01 is positioned. The pressing plate 12 moves downward to bend the front edge of the plate 01, and at the same time, the top plate 121 is driven to cooperate with the transmission assembly 3. The placing frame 2 is driven to rotate simultaneously through the transmission assembly 3. The placing frame 2 drives the plate 01 to rotate to an inclined state, so that the rotation amplitude of the plate 01 corresponds to the bending angle, so as to improve the bending effect.

[0044] After the front edge of the plate 01 is bent, the bent edge is replaced, the adjusting assembly 5 drives the extended positioning rod 4 to move downward and reset, and then the plate 01 is pushed until the rear edge of the plate 01 moves to the base 11. At this time, the other positioning rod 4 is moved to the outside of the placing groove 6, and then the plate 01 is moved so that the rear edge of the plate 01 abuts against the extended positioning rod 4. The plate 01 is positioned again, and the above operation is repeated to bend the rear edge of the plate 01.

[0045] In the bending, through the two placing frames 2, when the front and rear edges of the plate 01 are bent, the plate 01 only needs to be pushed between the two placing frames 2, and at the same time, the plate 01 is positioned through the positioning rod 4. The placing frame 2 rotates simultaneously in the bending, so as to improve the bending efficiency and bending precision of the plate 01.

[0046] Referring to Figure 2 , Figure 3 , Figure 7 , the transmission assembly 3 comprises a gear one 31 and a gear two 32 rotatably assembled on the rack 1, an intermediate piece 33, and a connecting plate 34. The gear one 31 and the gear two 32 are both arranged as bevel gears. The gear two 32 is provided with two corresponding to the two placing frames 2. The connecting plate 34 is connected with the side surface of the gear two 32. The placing frame 2 is connected with the connecting plate 34. The axis of the gear two 32 is arranged on the same straight line with the base 11, so that the placing frame 2 can be driven to rotate around the base 11 when the gear two 32 rotates, that is, the placing frame 2 rotates around the bend when bending. The gear one 31 is arranged between the two gear twos 32 and meshes with the two gear twos 32. The intermediate piece 33 cooperates with the gear one 31. The intermediate piece 33 corresponds to the top plate 121.

[0047] When the pressing plate 12 moves downward, the top plate 121 cooperates with the intermediate piece 33, the gear one 31 is driven to rotate through the intermediate piece 33, the gear one 31 rotates at the same time to drive the two gear twos 32 to rotate, and then the two placing frames 2 are driven to rotate at the same time.

[0048] Referring to Figure 3 , Figure 4 , Figure 7The intermediate component 33 includes: a slider 331 and a slide rod 332 that are slidably mounted on the frame 1, and an intermediate gear 333 that is coaxially connected to the gear 31. The slider 331 and the slide rod 332 are spaced apart. An oil cavity 7 filled with hydraulic oil is provided in the frame 1. The oil cavity 7 is located below the slider 331 and the slide rod 332. The lower parts of the slider 331 and the slide rod 332 extend into the oil cavity 7. The slider 331 and the top plate 121 are arranged in the same vertical direction, and the slider 331 is located below the top plate 121. The slide rod 332 is located on one side of the intermediate gear 333. The side of the slide rod 332 is provided with a tooth groove that meshes with the intermediate gear 333. The tooth groove is arranged along the sliding direction of the slide rod 332.

[0049] When the pressure plate 12 moves down, it drives the top plate 121 to cooperate with the slider 331, and drives the slider 331 to move downward. The slider 331 pushes the slide rod 332 upward through the hydraulic oil. The movement of the slide rod 332 drives the intermediate gear 333 and gear one 31 to rotate through the tooth groove, which in turn drives gear two 32 to rotate.

[0050] Reference Figure 7 , Figure 8 An elastic telescopic rod 8 is provided on the frame 1. The elastic telescopic rod 8 is located on the side of the slide rod 332 and is positioned along the sliding direction of the slide rod 332. The upper end of the elastic telescopic rod 8 is connected to the slide rod 332, and the elastic telescopic rod 8 is used to drive the slide rod 332 to move downward. When the slider 331 drives the slide rod 332 to move upward, the slide rod 332 moves upward and the elastic telescopic rod 8 is stretched accordingly. After bending, the elastic telescopic rod 8 drives the slide rod 332 to move downward to the initial position, thereby driving the placement frame 2 to rotate back to a horizontal state to adjust the placement of the board 01.

[0051] Reference Figure 7 The cross-section of slider 331 is larger than that of slider 332, which makes the upward movement distance of slider 332 much greater than the downward movement distance of slider 331.

[0052] While the pressure plate 12 is in contact with the sheet 01, the top plate 121 abuts against the slider 331. That is, while bending, the placement frame 2 rotates accordingly. By setting the cross-sections of the slider 331 and the slide rod 332 to be different, the pressure plate 12 can drive the slide rod 332 to move upward a large distance while pressing down to bend the sheet 01, so that the placement frame 2 can rotate to the corresponding angle according to the bending angle.

[0053] Reference Figure 1 , Figure 2 , Figure 4The adjusting assembly 5 comprises a driving member 51, a lead screw 52 and a connecting part 53. The mounting plate 9 is arranged on the rack 1, and a mounting groove 91 is formed in the mounting plate 9. The lead screw 52 is rotatably arranged in the mounting groove 91 and is arranged in a direction towards the other placing frame 2. The connecting part 53 is slidably arranged in the mounting groove 91. The lead screw 52 cooperates with the connecting part 53. The driving member 51 is a motor. An output end of the driving member 51 is connected with the lead screw 52. The locating rod 4 is connected with the connecting part 53.

[0054] The driving member 51 drives the connecting part 53 to move in the mounting groove 91 through the lead screw 52, so as to drive the locating rod 4 to move. The position of the locating rod 4 in the front-rear direction is adjusted according to the crease position of the plate 01.

[0055] With reference to Figure 4 , Figure 5 The connecting part 53 comprises a connecting block 531 and a pushing member 532. The connecting block 531 is slidably arranged in the mounting groove 91. The lead screw 52 penetrates through the connecting block 531 and cooperates with the connecting block 531 in a threaded manner. The pushing member 532 is arranged on the connecting block 531. An output end of the pushing member 532 is connected with the locating rod 4. The pushing member 532 is a pneumatic cylinder. While the lead screw 52 drives the locating rod 4 to move in the front-rear direction through the connecting block 531 and the pushing member 532, the pushing member 532 can drive the locating rod 4 to move in the up-down direction, so as to adjust the position of the locating rod 4 in the up-down direction.

[0056] Each placing frame 2 comprises two placing rods 21. The two placing rods 21 are arranged in a spaced manner along the length direction of the base 11 and are slidably arranged with the connecting plate 34. The distance between the two placing rods 21 can be adjusted by sliding the placing rods 21, so as to place plate 01s of different specifications.

[0057] With reference to Figure 2 , Figure 4 The mounting plate 9 and the adjusting assembly 5 are arranged in two groups. That is, one group of the mounting plate 9 and the adjusting assembly 5 is arranged at each placing rod 21. The mounting plate 9 is slidably arranged on the rack 1. The sliding direction of the mounting plate 9 is the same as the sliding direction of the placing rod 21. While the placing rod 21 is moved, the position of the mounting plate 9 and the adjusting assembly 5 is adjusted, so that the locating rod 4 is arranged in the locating groove, thereby facilitating subsequent positioning.

[0058] With reference to Figure 1 , Figure 4A control member 13 is arranged on the rack 1, the control member 13 comprises a driving member two 131 and a lead screw two 132, the driving member two 131 is arranged as a motor, the output end of the driving member two 131 is connected with the lead screw two 132, two opposite threads are arranged on the lead screw two 132, and the two threads are matched with the two mounting plates 9 respectively, and the lead screw two 132 is threadedly connected with the mounting plate 9.

[0059] The driving member two 131 drives the lead screw two 132 to rotate, the lead screw two 132 drives the two mounting plates 9 to move in opposite directions synchronously, the mounting plate 9 drives the placing rod 21 to move through the positioning rod 4, and the position of the positioning rod 4 and the placing rod 21 is adjusted simultaneously.

[0060] The implementation principle of the present application is that when the plate 01 is processed, the front and rear edges of the plate 01 are bent in sequence, the plate 01 is placed on the placing frame 2, at this time, the pushing piece 532 drives the positioning rod 4 on the other placing frame 2 to move to the outside of the placing groove 6, the plate 01 is pushed, the front edge of the plate 01 is moved to the base 11, and at the same time, the front edge of the plate 01 is moved to abut against the positioning rod 4 moved to the outside of the placing groove 6, and the front edge of the plate 01 is positioned.

[0061] The pressing plate 12 is lowered to abut against the plate 01, at the same time, the top plate 121 abuts against the sliding block 331, the pressing plate 12 continues to be lowered to bend the plate 01, at the same time, the sliding block 331 drives the placing frame 2 to rotate synchronously through the sliding rod 332, the gear one 31 and the gear two 32, the plate 01 is bent in cooperation with the pressing plate 12, after the bending is completed, the pressing plate 12 is raised to separate from the plate 01, the elastic telescopic rod 8 drives the sliding rod 332 and the sliding block 331 to move to the initial position, and at the same time, the placing frame 2 is rotated to return to the horizontal state.

[0062] The positioning rod 4 is lowered to reset, the plate 01 is pushed towards the other placing frame 2, until the rear edge of the plate 01 is moved to the base 11, then the other positioning rod 4 is moved to the outside of the placing groove 6, the plate 01 is moved again, so that the rear edge of the plate 01 abuts against the positioning rod 4, and the rear edge of the plate 01 is positioned, and the above operation is repeated to bend the rear edge of the plate 01.

[0063] Through the arrangement of the two placing frames 2 and the positioning rods 4 arranged on the placing frames 2 respectively, the front edge and the rear edge of the plate 01 are positioned through the positioning rods 4 respectively when the plate 01 is processed, when the bent edge needs to be replaced, the plate 01 only needs to be pushed to the other placing frame 2, and the positioning rod 4 assists in positioning, so that the bending efficiency of the plate 01 is improved.

[0064] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations can be made by those skilled in the art without departing from the scope of the present application.

Claims

1. A transformer shell bending device, comprising a frame, a base fixedly arranged on the frame, and a pressing plate slidingly arranged on the frame, characterized in that, Both sides of the base are provided with a placing frame rotating around the base; The rack is provided with a transmission assembly connected with the placing frame, and the pressing plate is provided with a top plate. When the pressing plate moves downward to bend the plate on the base, the top plate cooperates with the transmission assembly to drive the placing frame to rotate synchronously from a horizontal state to an inclined state; A placing groove is vertically and longitudinally formed in the placing frame, and the rack is provided with an adjusting assembly. The adjusting assembly is provided with a positioning rod. The adjusting assembly is used to drive the positioning rod to move up and down and back and forth in the placing groove. The plate is moved to the base through the two placing frames to move the front and back edges of the plate to be bent to the base, and the positioning rod corresponding to the side edge of the plate to be bent moves to the outside of the placing groove. The positioning rod is in abutment with the plate to be positioned. When the bent edge is replaced, the extended positioning rod moves downward to reset, and another positioning rod moves upward to position the other side of the plate to be bent; The transmission assembly comprises a gear one, a gear two, an intermediate piece and a connecting plate. The gear one and the gear two are both rotatably assembled on the rack. The gear one and the gear two are arranged as bevel gears. The gear two is provided with two corresponding to the two placing frames. The axis of the gear two is located on the same line as the base. The gear one is arranged between the two gears two and is in mesh with the gear two. The connecting plate is arranged on the side surface of the gear two. The placing frame is connected with the connecting plate. The intermediate piece is arranged on the rack. The intermediate piece cooperates with the gear one. The top plate drives the gear one to rotate through the intermediate piece. The intermediate piece comprises a sliding block, a sliding rod and an intermediate gear. An oil cavity is formed in the rack. The oil cavity is filled with hydraulic oil. The sliding block and the sliding rod are both slidably assembled on the rack, and the lower ends of the sliding block and the sliding rod both extend into the oil cavity. The sliding block is arranged below the top plate. The intermediate gear is coaxially connected with the gear one. A tooth groove is formed on the side surface of the sliding rod and is in mesh with the intermediate gear. The sliding block moves downward to push the sliding rod to move upward through the hydraulic oil. The cross section of the sliding block is larger than the cross section of the sliding rod. When the plate is pressed to be bent, the moving distance of the sliding rod is much larger than the moving distance of the sliding block, so that the placing frame can be synchronously rotated to the bending angle of the plate. An elastic telescopic rod is arranged on the rack. The elastic telescopic rod is arranged on one side of the sliding rod. The elastic telescopic rod is connected with the upper end of the sliding rod. The elastic telescopic rod is used to drive the sliding rod to move downward. An installation plate is arranged on the rack. An installation groove is formed in the installation plate. The adjusting assembly comprises a driving piece one, a lead screw one and a connecting part. The lead screw one is rotatably assembled in the installation groove. The connecting part is slidably assembled in the installation groove. The lead screw one is in screw thread cooperation with the connecting part. The connecting part is connected with the positioning rod. The driving piece one is arranged on the installation plate. The output end of the driving piece one is connected with the lead screw one to drive the lead screw one to rotate. The connecting part comprises a connecting block in screw thread cooperation with the lead screw one and a pushing piece arranged on the connecting block. The output end of the pushing piece is connected with the positioning rod to drive the positioning rod to move up and down. The placing frame comprises two placing rods. The placing rods are arranged at intervals along the length direction of the base. The placing rods are in sliding cooperation with the connecting plate. Both the installation plate and the adjusting assembly are provided with two groups. The two groups of installation plates correspond to the two placing rods one by one. The installation plates are slidably arranged on the rack. The sliding directions of the installation plates and the placing rods are the same. A control piece is arranged on the rack. The control piece is connected with the installation plate to adjust the position of the installation plate.

2. The transformer housing bending apparatus of claim 1, wherein The control member comprises a driving member two and a screw rod two, the screw rod two is arranged on the frame and is arranged along the sliding direction of the mounting plate, the driving member two is arranged on the frame, the output end of the driving member two is connected with the screw rod two, two thread grooves with opposite thread directions are arranged on the screw rod two corresponding to the two mounting plates, and the screw rod two is in threaded cooperation with the mounting plates.

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