A transformer core perpendicularity correction device and method

Abstract

The present application belongs to the technical field of core preparation, and particularly relates to a verticality correction device and method for a transformer core. The verticality correction device for the transformer core comprises two sets of correction assemblies and a cover top. The correction assembly comprises two vertical columns, a cross beam, an electric push rod and a manual push rod. The electric push rod comprises a push rod frame, a push rod assembly and a limiting assembly. The push rod assembly comprises a power element and a push rod. The limiting assembly comprises a guide block, a spring plunger and a limiting switch. The device can replace manual work to correct the verticality of the transformer core, and is suitable for all core sizes of 5-15 tons. The electric push rod is used to correct the verticality, and the minimum precision of the push distance is controlled in millimeters, so that the correction precision is ensured. The correction device is arranged on both sides of the core, and the bottom position of the core is limited while the top of the core is pushed, so that the core is effectively prevented from tilting in an unfixed direction or from tilting, sliding or the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of core preparation, and particularly relates to a verticality correction device and method for a transformer core. BACKGROUND

[0002] The verticality correction device for the transformer core is a special device for correcting the inclined core to be vertical under the vertical state of the core, and can correct the side column and the middle column of the core to be vertical.

[0003] There is no adaptive device in the prior art, and for the inclined state of the transformer core, the transformer core below 5 tons is basically hammered by the staff with a hammer or levered by the staff, and the transformer core above 5 tons needs to be operated by using a crab to hoist the upper yoke; due to the lack of precision control, the staff needs to repeatedly operate and review the effect, which is very low in efficiency and very unsafe. SUMMARY

[0004] The application aims to solve the above problems, and provides a verticality correction device for a transformer core, which is suitable for all core sizes of 5-15 tons, can improve the safety of the verticality correction process, prevent the core from falling down, improve the verticality precision of the core, and improve the success rate of one-time correction.

[0005] According to the technical scheme of the application, the verticality correction device for the transformer core comprises two groups of correction assemblies arranged oppositely and a cover arranged between the top portions of the two groups of correction assemblies.

[0006] The correction assembly comprises two vertical columns, a cross beam movably installed between the two vertical columns, and an electric jack and a manual jack movably installed on the cross beam.

[0007] The electric jack comprises a jack frame, a jack assembly and a limiting assembly installed on the jack frame; the jack assembly comprises a power element and a push rod, and a fixed block is installed at the movable end of the power element; the push rod comprises a rod body, one end of the rod body is rotatably installed on the fixed block through a movable shaft, and a push block is arranged at the other end of the rod body; the limiting assembly comprises a guide block, a spring plunger and a limiting switch, the guide block is installed directly below the rod body of the push rod, a recess accommodating the rod body is arranged at the top of the guide block, the spring plunger is installed in the recess, and the limiting switch is installed directly below the push block of the push rod.

[0008] The manual jack comprises a support and a supporting rod.

[0009] Further, the cross beam comprises a cross beam body and a driving assembly for driving the cross beam body to move up and down along the stand, the driving assembly comprises a driving element, a transmission element and an execution element, the execution element is installed between the cross beam body and the stand, and the execution element is a rack and pinion structure, a worm gear structure or a chain wheel and chain structure.

[0010] Further, a cross beam guide assembly is arranged between the stand and the cross beam.

[0011] Further, the electric lifting rod further comprises a range finder, and the range finder is installed on the lifting rod frame.

[0012] Further, an electric lifting rod guide assembly is arranged between the cross beam and the electric lifting rod, and a manual lifting rod guide assembly is arranged between the cross beam and the manual lifting rod.

[0013] Further, the lifting rod frame and the support are in an integrated structure.

[0014] Further, the support comprises a fixed end and a rotating end, the fixed end is movably installed on the cross beam, the rotating end is rotatably installed on the fixed end, and the surface of the supporting rod is provided with threads and matched with the rotating end through a threaded block.

[0015] Further, the end faces of the push rod and the supporting rod are provided with buffer pads.

[0016] Another aspect of the present application provides a transformer core verticality correction method, comprising the following steps,

[0017] S1: conveying the transformer core between the two groups of correction assemblies of the transformer core verticality correction device, the transformer core comprising an upper yoke clamp, a core column and a lower yoke clamp;

[0018] S2: moving the cross beam of the correction assembly on the offset side of the transformer core to below the upper yoke clamp, positioning the electric lifting rod to the center position of the core column, and adjusting the push rod so that the push block abuts against the core column;

[0019] S3: moving the cross beam of the correction assembly on the other side to the lower yoke clamp, and adjusting the manual lifting rod so that the supporting rod abuts against the center position of the lower yoke clamp;

[0020] S4: starting the power element of the electric lifting rod in step S2 to drive the push rod to push the core column until the push rod is in a horizontal state, the rod body of the push rod presses down the spring plunger while the push block contacts the limit switch, and the power element stops working, at this time, the core column is in a vertical state;

[0021] S5: operating steps S2 and S4 until all the core columns are in a vertical state;

[0022] The steps S2 and S3 are not limited.

[0023] Further, the step S4 further comprises the following operations: detecting the offset of the core column, and setting the maximum pushing distance of the push rod according to the offset.

[0024] The technical scheme of the present application has the following advantages compared with the prior art:

[0025] The device can replace manual work to correct the perpendicularity of the transformer core, and is suitable for all core sizes of 5-15 tons; the electric push rod is used to correct the perpendicularity, the minimum pushing distance is controlled in millimeter, and the correction accuracy is ensured; the correction device is arranged on both sides of the core, the bottom position of the core is limited while the top of the core is pushed, and the core is effectively prevented from tilting in an unfixed direction or from tilting, sliding or the like. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the transformer core perpendicularity correction device of the present application.

[0027] Figure 2 Fig. 2 is a schematic diagram of the structure of the stand column of the present application.

[0028] Figure 3 Fig. 3 is a schematic diagram of the structure of the cross beam of the present application. 4

[0029] Fig. 4 is a schematic diagram of the structure of the electric push rod of the present application. Figure 5

[0030] Fig. 5 is a schematic diagram of the structure of the manual push rod of the present application. Figure 6

[0031] Fig. 6 is a schematic diagram of the structure of the cover of the present application. Figure 7

[0032] Fig. 7 is a schematic diagram of the structure of the transformer core of the present application. Figure 8

[0033] ​Explanation of reference signs: 100-column, 110-column body, 120-guide rail, 130-rack, 200-cross beam, 210-cross beam body, 220-driving assembly, 221-driving element, 222-transmission element, 223-execution element, 224-coupling, 225-bearing support seat, 226-bearing seat, 227-cylinder stop, 230-guiding roller, 240-transverse movement rack, 250-electric ejection pin guide rail, 260-manual ejection pin guide rail, 300-electric ejection pin, 310-ejection pin frame, 320-ejection pin assembly, 321-power element, 322-push rod, 323-fixed block, 324-moving shaft, 330-limiting assembly, 331-guiding block, 332-spring plunger, 333-limiting switch, 334-bracket structure, 340-distance measuring instrument, 350-transverse movement driving assembly, 360-electric ejection pin slider, 400-manual ejection pin, 410-bracket, 420-bracing rod, 411-fixed end, 412-rotary end, 413-manual push rod rotary shaft, 414-positioning pin, 415-positioning plate, 421-threaded block, 422-bracing rod buffer pad, 430-manual ejection pin slider, 500-cover, 510-cover body, 520-inclined strut, 600-transformer core, 610-upper yoke clamp, 620-core column, 630-lower yoke clamp. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it.

[0035] As shown in Figure 1 , the present application provides a transformer core verticality correction device, which comprises two sets of correction assemblies arranged oppositely and a cover 500 arranged between the top of the two sets of correction assemblies.

[0036] Among them, the correction assembly comprises a column 100, a cross beam 200, an electric ejection pin 300 and a manual ejection pin 400. In each set of correction assembly, there are two columns 100, the cross beam 200 is movably installed between the two columns 100, and the electric ejection pin 300 and the manual ejection pin 400 are movably installed on the cross beam 200. It can be imagined that the electric ejection pin 300 and the manual ejection pin 400 are at least one set, in order to ensure the stability of the overall structure of the transformer core during the correction process, the electric ejection pin 300 and the manual ejection pin 400 can also be arranged as two or more sets.

[0037] As shown in Figure 3 and 4As shown, the cross beam 200 comprises a cross beam body 210 and a driving assembly 220 for driving the cross beam body 210 to move up and down along the stand column 100. The driving assembly 220 comprises a driving element 221, a transmission element 222 and an execution element 223, the execution element 223 is installed between the cross beam body 210 and the stand column 100, and the execution element 223 is a rack and pinion structure, a worm gear structure or a sprocket chain structure.

[0038] In one embodiment, as shown in Figure 3 and 4 The driving element 221 adopts a hollow shaft motor, the transmission element 222 adopts a long shaft, and the execution element 223 is a rack and pinion structure. Specifically, the driving element 221 (i.e. the hollow shaft motor) cooperates with the transmission element 222 (i.e. the long shaft) to provide lifting power, the two ends of the transmission element 222 are connected to the gear of the execution element 223 through the shaft coupling 224 to conduct power, the rack 130 in the execution element 223 is installed on the stand column body 110 of the stand column 100, and the gear is engaged with the rack 130 to provide lifting power. Preferably, since the long shaft is used as the transmission element 222, in order to prevent deformation caused by large torsion, a bearing support seat 225 is arranged on the long shaft, the number of bearing support seats 225 can be adjusted according to actual needs, and two are shown in the figure. In order to ensure that the gear in the execution element 223 is engaged with the rack 130, a bearing seat 226 is also arranged, and a cylinder stop 227 is installed below the bearing seat 226.

[0039] In order to ensure that the cross beam 200 moves up and down along the stand column 100, a cross beam guide assembly is arranged between the stand column 100 and the cross beam 200. As shown in Figures 2-4 The cross beam guide assembly comprises guide rails 120 installed on the stand column body 110 and guide rollers 230 installed at both ends of the cross beam body 210. Preferably, recesses can be arranged on the stand column body 110, and a guide rail 120 is arranged on the bottom and both sides of the recess. Correspondingly, the roller 230 comprises a middle part and two side rollers which are matched with the guide rails on the bottom and both sides of the recess, respectively.

[0040] As shown in Figure 2 Limiting baffle plates 140 are also arranged at the upper and lower ends of the guide rails 120 to prevent collision during lifting or lowering. A cover top connecting plate 150 is also arranged at the top of the stand column body 110 to facilitate the fixed installation of the cover top 500; an installation bottom plate 160 is arranged at the bottom of the stand column body 110 to facilitate the fixed installation of the overall structure; a plurality of reinforcing plates can also be arranged between the installation bottom plate 160 and the stand column body 110.

[0041] As shown in Figure 5As shown, the electric jack 300 comprises a jack frame 310, and a jack assembly 320 and a limiting assembly 330 mounted on the jack frame 310, the jack assembly 320 comprises a power element 321 and a push rod 322. The power element 321 can be an electric cylinder, a lead screw, a pneumatic cylinder, etc., and a fixed block 323 is mounted on the movable end of the power element 321. The push rod 322 comprises a rod body, one end of the rod body is rotatably mounted on the fixed block 323 through a movable shaft 324, and the other end of the rod body is provided with a push block, the push block is perpendicular to the rod body, the push block partially extends out of the jack frame 310, and the lower end of the push block is lower than the rod body.

[0042] The limiting assembly 330 comprises a guide block 331, a spring plunger 332 and a limiting switch 333. The guide block 331 is mounted below the rod body of the push rod 322, the top of the guide block 331 is provided with a groove for accommodating the rod body, and the spring plunger 332 is mounted in the groove. Specifically, two protrusions can be arranged on the top of the guide block 331, the protrusions form a groove therebetween, and the width of the groove is wider than the rod body of the push rod 322. The limiting switch 333 is mounted below the push block of the push rod 322, and can be mounted at the end of the jack frame 310 by using a bracket structure 334. The limiting switch 333 is in communication connection with the power element 321, and the limiting switch 333 is touched, and the power element 321 stops working. In the initial state of the push rod 322, the push rod 322 is lifted by the spring plunger 332, and when the push rod 322 is pushed straight, the rod body part presses the spring plunger 332 flat, and the push block touches the limiting switch 333.

[0043] The electric jack 300 further comprises a horizontal movement driving assembly 350 for providing horizontal movement power, which can be a horizontal movement motor, for example, and the output end such as a gear is engaged with the horizontal movement rack 240 on the beam body 210. It can be imagined that the horizontal movement driving assembly 350 can also adopt other similar structures, which can realize the horizontal movement of the electric jack 300.

[0044] In one embodiment, the electric jack 300 further comprises a range finder 340 for detecting the distance between the electric jack 300 and the iron core column 620, and the range finder 340 is also mounted on the jack frame 310 and can be located on one side of the push rod 322.

[0045] As Figure 6As shown, the manual jack 400 includes a bracket 410 and a support rod 420, the bracket 410 includes a fixed end 411 and a rotating end 412, the fixed end 411 is movably mounted on the beam 200, the rotating end 412 is rotatably mounted on the fixed end 411, and the surface of the support rod 420 is provided with threads and cooperates with the rotating end 412 through a threaded block 421. Specifically, the fixed end 411 and the rotating end 412 are both hollow structures, the manual push rod rotating shaft 413 is installed inside the fixed end 411 and cooperates with the rotating end 412 to rotate, the direction is fixed through the positioning pin 414 and the positioning plate 415 on one side of the rotating end 412, and the threaded block 421 is installed at the end of the rotating end 412 away from the fixed end 411, the support rod 420 is threadedly connected with the threaded block 421, and the length of the support rod 420 extending out of the rotating end 412 is adjusted through rotation to perform the jacking operation.

[0046] To ensure that the electric jack 300 and the manual jack 400 move in the specified direction, an electric jack guide assembly is arranged between the beam 200 and the electric jack 300, and a manual jack guide assembly is arranged between the beam 200 and the manual jack 400. Specifically, the electric jack guide assembly includes an electric jack guide rail 250 mounted on the beam body 210 and an electric jack sliding block 360 mounted on the jack frame 310, and the manual jack guide assembly includes a manual jack guide rail 260 mounted on the beam body 210 and a manual jack sliding block 430 mounted on the bracket 410.

[0047] Preferably, to avoid scratching the surface of the core column 620, a buffer pad is arranged on the end face of the support rod 420 and the push rod 322, such as the support rod buffer pad 422 at the end of the support rod 420. The buffer pad can be made of nylon material.

[0048] As shown in the drawings, Figure 5 As shown, the jack frame 310 and the bracket 410 are an integral structure and can be fixed together by welding, so that the manual jack 400 can move with the electric jack 300 and does not need to be manually operated or additionally provided with a driving structure.

[0049] As shown in the drawings, Figure 7 As shown, the top cover 500 includes a top cover body 510 and inclined braces 520 arranged at four corners of the top cover body 510.

[0050] Based on the transformer core perpendicularity correction device, the application further provides a transformer core perpendicularity correction method, which includes the following steps,

[0051] S1: Transport the transformer core 600 between the two groups of correction assemblies of the transformer core perpendicularity correction device; as shown in the drawings, Figure 8 As shown, the transformer core 600 includes an upper yoke clamp 610, a core column 620 and a lower yoke clamp 630;

[0052] S2: move the crossbeam 200 of the rectification assembly of the one side of the moving transformer core 600 to the lower side of the upper yoke clamp 610, position the electric jack 300 to the center of the core column 620, and adjust the push rod 322 so that the push block abuts against the core column;

[0053] S3: move the crossbeam 200 of the rectification assembly of the other side to the lower yoke clamp 630, and adjust the manual jack 400 so that the support rod 420 abuts against the center of the lower yoke clamp 630;

[0054] S4: start the power element 321 of the electric jack 300 in step S2, so that the push rod 322 pushes the core column 620 until the push rod 322 is in a horizontal state, the rod body of the push rod 322 presses the spring plunger 332, and the push block contacts the limit switch 333, and the power element 321 stops working, at this time, the core column 620 is in a vertical state;

[0055] S5: the operations in steps S2 and S4 are repeated until all the core columns 620 are in a vertical state;

[0056] The steps in steps S2 and S3 are not limited.

[0057] In order to prevent the limit switch 333 from failing to push the core column 620, the following operation is further included before step S4: detecting the offset of the core column 620, and setting the maximum pushing distance of the push rod 322 according to the offset. Specifically, the crossbeam 200 of the rectification assembly can be operated to the lower side of the upper yoke clamp 610 (such as 10 cm above), the electric jack 300 is positioned to the center of the core column 620, and the distance between the electric jack 300 and the core column 620 is detected by the range finder 340; then the crossbeam 200 is positioned to the upper side of the lower yoke clamp 630 (such as 10 cm above), the electric jack 300 is positioned to the center of the core column 620, and the distance between the electric jack 300 and the core column 620 is detected again; the distance to be corrected of the core column 620 is calculated through the two measured distances, and the distance + 5 mm is taken as the maximum pushing distance of the push rod 322.

[0058] Preferably, in step S4, the output force of the power element 321 is ≥1000N, the jacking speed of the push rod 322 pushing the core column 620 is controlled to be 1mm / s, and the overall jacking accuracy is controlled to be within 0.5mm, so as to ensure that the verticality deviation of the core satisfies the requirement that the deviation is less than 1 / 1000 of the height.

[0059] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A transformer core verticality correction device, characterized in that, The roof (500) is arranged between the two sets of correction assemblies. The correction assembly comprises two upright columns (100), a crossbeam (200) movably mounted between the two upright columns (100), and an electric roof jack (300) and a manual roof jack (400) movably mounted on the crossbeam (200). The electric roof jack (300) comprises a roof jack frame (310), a roof jack assembly (320) and a limiting assembly (330) mounted on the roof jack frame (310); the roof jack assembly (320) comprises a power element (321) and a push rod (322), and a fixed block (323) is mounted on the movable end of the power element (321); the push rod (322) comprises a rod body, one end of the rod body is rotatably mounted on the fixed block (323) through a movable shaft (324), and the other end of the rod body is provided with a push block; the limiting assembly (330) comprises a guide block (331), a spring plunger (332) and a limiting switch (333), the guide block (331) is arranged directly below the rod body of the push rod (322), the top of the guide block (331) is provided with a groove for accommodating the rod body, the spring plunger (332) is mounted in the groove, and the limiting switch (333) is arranged directly below the push block of the push rod (322). The manual roof jack (400) comprises a support (410) and a support rod (420), the support (410) comprises a fixed end (411) and a rotating end (412), the fixed end (411) is movably mounted on the crossbeam (200), and the rotating end (412) is rotatably mounted on the fixed end (411); the surface of the support rod (420) is provided with threads, and the rotating end (412) is matched with the support rod (420) through a threaded block (421).

2. The transformer core perpendicularity correcting device according to claim 1, wherein The crossbeam (200) comprises a crossbeam body (210) and a driving assembly (220), the driving assembly (220) is used for driving the crossbeam body (210) to move up and down along the upright column (100), and the driving assembly (220) comprises a driving element (221), a transmission element (222) and an execution element (223), the execution element (223) is mounted between the crossbeam body (210) and the upright column (100), and the execution element (223) is a gear and rack structure, a worm and gear structure or a sprocket and chain structure.

3. The transformer core perpendicularity correcting device according to claim 1 or 2, characterized in that A crossbeam guide assembly is arranged between the upright column (100) and the crossbeam (200).

4. The perpendicularity correcting device for a transformer core according to claim 1, wherein The electric roof jack (300) further comprises a range finder (340), and the range finder (340) is mounted on the roof jack frame (310).

5. The perpendicularity correcting device for a transformer core according to claim 1, wherein An electric roof jack guide assembly is arranged between the crossbeam (200) and the electric roof jack (300), and a manual roof jack guide assembly is arranged between the crossbeam (200) and the manual roof jack (400).

6. The perpendicularity correcting device for a transformer core according to claim 1, wherein The roof jack frame (310) and the support (410) are an integral structure.

7. The perpendicularity correcting device for a transformer core according to claim 1, wherein End faces of the push rod (322) and the support rod (420) are provided with buffer pads.

8. A method of correcting the perpendicularity of a transformer core, characterized by, The transformer core verticality correction device according to any one of claims 1-7, comprising the following steps: S1: conveying the transformer core (600) between the two sets of correction assemblies, the transformer core (600) comprising an upper yoke clamp (610), a core column (620) and a lower yoke clamp (630); S2: moving the crossbeam (200) of the correction assembly on the offset side of the transformer core (600) to below the upper yoke clamp (610), positioning the electric jack (300) to the center of the core column (620), and adjusting the push rod (322) so that the push block abuts against the core column (620); S3: moving the crossbeam (200) of the correction assembly on the other side to the lower yoke clamp (630), and adjusting the manual jack (400) so that the support rod (420) abuts against the center of the lower yoke clamp (630); S4: starting the power element (321) of the electric jack (300) in step S2, so that the push rod (322) pushes the core column (620) until the push rod (322) is in a horizontal state, the rod body of the push rod (322) presses down the spring plunger (332) and the push block contacts the limit switch (333), and the power element (321) stops working, at this time the core column (620) is in a vertical state; S5: repeating the operations in steps S2 and S4 until all core columns (620) are in a vertical state; The steps in steps S2 and S3 are not limited.

9. The method of correcting the perpendicularity of a transformer core according to claim 8, wherein Before step S4, the following operation is further included: detecting the offset amount of the core column (620), and setting the maximum pushing distance of the push rod (322) according to the offset amount.

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