A control device for positioning and limiting the nut of a side screw of a transformer core

Abstract

The application is a control device for positioning and limiting the extension of the side screw of the transformer core, which is characterized in that the upper limiting nut adjusting mechanism is slidably connected to the lower limiting nut adjusting mechanism, and the bottom of the lower limiting nut adjusting mechanism is provided with a screw extension positioning mechanism. The application has the advantages of simple and reasonable structure, three positioning holes are arranged according to the commonly used size of the side screw of the core, the extension length of the screw can be quickly positioned by using the pin, two guide rails are arranged on the bottom of the lower limiting nut base, the horizontal and vertical positions can be adjusted according to the different distances between the side screws of the core with different capacities, the limiting nut clamping device can be replaced according to the size of the nut, the overlap plate is arranged on the upper limiting nut base, the overlap length can be adjusted, the height of the upper limiting nut base is positioned by the overlap plate, and then the electromagnet is turned on through the switch to fix the base. The extension length of the side screw and the position of the limiting nut can be effectively adjusted.

Description

Technical Field

[0001] This invention relates to a device for positioning and limiting the extension of a bolt next to a transformer core and a control device for the limiting nut. Background Technology

[0002] In the existing technology, the following problems are difficult to solve during the installation of upper and lower clamps and side bolts on the transformer core:

[0003] 1. Difficulty in controlling screw extension length. For product appearance reasons, companies typically have specific requirements regarding the extension length of screws relative to the nut for different sizes. Workers adjust this length visually, a time-consuming and labor-intensive process that struggles to guarantee perfect consistency. Subsequent tightening operations, such as retightening the nut on the side screws, can further widen this length difference, leading to inconsistent extension lengths between the two side screws on the same side, affecting the product's appearance. Product appearance is an integral part of product quality, contributing to increased product influence, sales volume, and extended product lifespan. The current issue of screw extension length control negatively impacts product appearance.

[0004] 2. The spacing between the limit nuts (usually related to the core thickness) is difficult to control. The core limit nuts are installed inside the clamps to control the clamp spacing and prevent clamp deformation. Due to differences in the thickness of silicon steel sheets and stacking, there will be slight differences in the thickness of each core. Therefore, the spacing of the limit nuts cannot be controlled by the thread, and manual adjustment cannot completely match the core thickness. After the side screw is installed and the lock nut is tightened, the limit nuts are still loose and usually need to be retightened.

[0005] 3. The torque of the clamping nut on the side screw is difficult to control. In existing technology, when installing the side screw, the limiting nut cannot fully perform its limiting function, and the core may experience excessive torque during tightening, causing deformation of the clamping components and resulting in an overly tight core.

[0006] In summary, existing technologies cannot effectively solve the problems of controlling the extension length of the bolt, the spacing between the limit nuts, and the torque of the bolt clamping nut during the installation of the side bolt on the transformer core. Summary of the Invention

[0007] The present invention proposes a transformer core side screw extension positioning and limit nut control device, which aims to overcome the above-mentioned shortcomings of the prior art, and assist in positioning the extension length of the side screw and controlling the spacing of the clamp limit nuts.

[0008] The technical solution of the present invention: a transformer core side screw extension positioning and limit nut control device, the structure of which includes a lower limit nut adjustment mechanism, an upper limit nut adjustment mechanism, and a screw extension positioning mechanism, wherein the upper limit nut adjustment mechanism is slidably connected to the lower limit nut adjustment mechanism, and the lower limit nut adjustment mechanism is provided with a screw extension positioning mechanism at the bottom.

[0009] Preferably, in order to adjust the clamping position according to the different positions of the screws beside the iron core, the lower limit nut adjustment mechanism includes a base, a longitudinal adjustment platform and a transverse adjustment and clamping device. A pair of longitudinal adjustment platforms are slidably connected in the slide groove on the top surface of the base by a slider. A transverse adjustment and clamping device perpendicular to the longitudinal adjustment platform in the horizontal direction is slidably connected on the longitudinal adjustment platform. A clamping recess is provided at the front end of the transverse adjustment and clamping device.

[0010] Preferably, in order to position the extension length according to different screw sizes, the screw extension positioning mechanism includes a positioning base, a supporting screw, and a positioning pin. The positioning base is arranged parallel to the bottom of the base, and a positioning post is vertically provided on the rear side of the top surface of the positioning base. The positioning post is vertically provided with a positioning pin parallel to the positioning base. The rear end of the base is sleeved on the positioning post, and a positioning plate is vertically provided on the bottom surface parallel to the positioning post. The positioning plate has 3 positioning holes from top to bottom that match the size of the positioning pin.

[0011] Preferably, in order to cooperate with the positioning pin for support and positioning, the positioning base is vertically threaded with a support screw, the top of the support screw abutting against the bottom surface of the base.

[0012] Preferably, in order to adjust the height of the upper limit nut adjustment mechanism according to the core thickness, the positioning base is vertically threaded with a pair of vertical guide rails vertically connected to both sides of the base, and the upper limit nut adjustment mechanism is slidably connected to the vertical guide rails.

[0013] Preferably, in order to adjust the position of different upper limit nuts, the upper limit nut adjustment mechanism includes a mounting base, an upper longitudinal adjustment platform, and a lateral adjustment and positioning device. The mounting base is slidably connected to the vertical guide rail. A pair of upper longitudinal adjustment platforms are slidably connected to the slide groove on the top surface of the mounting base via sliders. A lateral adjustment and positioning device perpendicular to the upper longitudinal adjustment platform in the horizontal direction is slidably connected to the upper longitudinal adjustment platform. The front end of the lateral adjustment and positioning device is set with a positioning recess.

[0014] Preferably, in order to position the mounting base before fixing its position, a mounting base positioning mechanism is connected to one side of the mounting base. The mounting base positioning mechanism includes an upper positioning pin and a positioning overlap plate. The positioning overlap plate is slidably connected to a guide rail groove opened on one side of the mounting base. The top of the guide rail groove is threaded with an upper positioning pin, which is located in a positioning groove opened along the length direction at the center of the positioning overlap plate.

[0015] Preferably, in order to achieve height positioning of the upper limit nut adjustment mechanism, the vertical guide rail is made of metal, an electromagnet is provided between the bottom surface of the mounting base and the vertical guide rail, and an electromagnet switch electrically connected to the electromagnet is provided on the other side of the mounting base.

[0016] A method for using a transformer core side screw extension positioning and limit nut control device includes the following steps:

[0017] First, place the base on the lower clamp and install the positioning base while using the support screw and positioning pin to fix it;

[0018] Install the upper and lower limit nuts inside the side screw, with the distance between the upper and lower limit nuts being less than the core thickness. Install the side screw into the holes of the upper and lower clamps. At this time, the extension length of the side screw is supported by the mounting and positioning base.

[0019] Use a wrench to tighten the lower limit nut and adjust the longitudinal adjustment platform and the lateral adjustment and clamping device to clamp the lower limit nut.

[0020] Install the mounting base onto the vertical guide rail, adjust the positioning overlap plate so that it overlaps the iron core side column, and turn on the electromagnet switch to fix the mounting base.

[0021] Adjust the position of the upper longitudinal adjustment platform and the lateral adjustment and positioning device, and position them on the side screw. Use a wrench to tighten the upper limit nut to fix them.

[0022] Remove all tooling and install washers and lock nuts.

[0023] Advantages of this invention: The structure is simple and reasonable. Three positioning holes are provided according to the common dimensions of the side screws in the iron core, allowing for quick positioning of the screw extension length using pins. The lower limit nut base has two guide rails, allowing for lateral and longitudinal position adjustment based on the different spacing of the side screws in various iron core capacities. The limit nut clamping device can be replaced according to the nut size. The upper limit nut base has an overlapping plate, allowing for adjustable overlap length. The height of the upper limit nut base is positioned by the overlapping plate, and then the electromagnet is activated by a switch to fix the base. This effectively adjusts the extension length of the side screws and the position of the limit nut. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the transformer core side screw extension positioning and limit nut control device of the present invention.

[0025] Figure 2 This is a schematic diagram of the transformer core side screw extension positioning and limit nut control device of the present invention from another angle.

[0026] Figure 3This is a longitudinal sectional view of the transformer core side screw extension positioning and limit nut control device of the present invention.

[0027] Figure 4 This is a schematic diagram of the operating state of the transformer core side screw extension positioning and limit nut control device of the present invention.

[0028] Figure 5 This is a schematic diagram of another angle of use for the transformer core side screw extension positioning and limit nut control device of the present invention.

[0029] In the diagram, 1 is the base, 2 is the longitudinal adjustment platform, 3 is the lateral adjustment and clamping device, 4 is the mounting base, 41 is the guide rail groove, 5 is the electromagnet switch, 6 is the upper longitudinal adjustment platform, 7 is the upper lateral adjustment and positioning device, 8 is the upper positioning pin, 9 is the positioning overlap plate, 10 is the positioning base, 101 is the positioning column, 11 is the vertical guide rail, 12 is the positioning plate, 13 is the support screw, 14 is the positioning pin, 15 is the electromagnet, 16 is the lower clamp, 17 is the upper limit nut, 18 is the lower limit nut, 19 is the side screw, 20 is the iron core, 21 is the upper clamp, 22 is the iron core side column, and 23 is the locking nut. Implementation

[0030] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0031] like Figure 1-3 As shown, a transformer core side screw extension positioning and limit nut control device includes a lower limit nut adjustment mechanism, an upper limit nut adjustment mechanism, and a screw extension positioning mechanism.

[0032] The lower limit nut adjustment mechanism includes a base 1, a longitudinal adjustment platform 2, and a lateral adjustment and clamping device 3.

[0033] A pair of vertical guide rails 11 are vertically connected to both sides of the base 1, which are used to adjust the height of the upper limit nut adjustment mechanism according to the core thickness. The upper limit nut adjustment mechanism (specifically the mounting base 4) is slidably connected to the vertical guide rails 11.

[0034] A pair of longitudinal adjustment platforms 2 are slidably connected to the slide groove on the top surface of the base 1 via sliders. A transverse adjustment and clamping device 3 that is perpendicular to the longitudinal adjustment platform 2 in the horizontal direction is slidably connected to the longitudinal adjustment platform 2. The transverse adjustment and clamping device 3 has a clamping recess at the front end. The transverse adjustment and clamping device 3, which can move in two axes, can be adjusted according to the different positions of the screws next to the iron core.

[0035] The screw extension positioning mechanism includes a positioning base 10, a support screw 13, and a positioning pin 14.

[0036] A positioning base 10 is arranged parallel to the bottom of the base 1. A positioning post 101 is vertically provided on the rear side of the top surface of the positioning base 10. A positioning pin 14 is vertically provided on the positioning post 101 and parallel to the positioning base 10. Correspondingly, the rear end of the base 1 is sleeved on the positioning post 101 and a positioning plate 12 is vertically provided on the bottom surface and parallel to the positioning post 101. The positioning plate 12 has 3 positioning holes from top to bottom that match the size of the positioning pin 14, which can be used to position the extension length according to different side screw sizes. A support screw 13 is vertically threaded onto the positioning base 10. The top end of the support screw 13 abuts against the bottom surface of the base 1. The support screw 13 cooperates with the positioning pin 14 to provide support and positioning.

[0037] The upper limit nut adjustment mechanism includes a mounting base 4, an upper longitudinal adjustment platform 6, and a lateral adjustment and positioning device 7.

[0038] Mounting base 4 is slidably connected to vertical guide rail 11. A pair of upper longitudinal adjustment platforms 6 are slidably connected to the slide groove on the top surface of mounting base 4 via sliders. A lateral adjustment and positioning device 7 perpendicular to the upper longitudinal adjustment platform 6 in the horizontal direction is slidably connected to the upper longitudinal adjustment platform 6. The front end of the lateral adjustment and positioning device 7 is set with a positioning recess. The lateral adjustment and positioning device 7, which can move on two axes, can adjust the position of different upper limit nuts.

[0039] One side of the mounting base 4 is connected to a mounting base positioning mechanism, which includes an upper positioning pin 8 and a positioning overlap plate 9. The positioning overlap plate 9 is slidably connected to a guide rail groove 41 opened on one side of the mounting base 4. The top of the guide rail groove 41 is threaded with the upper positioning pin 8, which is located in a positioning groove opened along the length direction at the center of the positioning overlap plate 9. By adjusting the extension length of the positioning overlap plate 9, the mounting base 4 can be positioned before being fixed.

[0040] An electromagnet 15 is provided on the bottom surface of the mounting base 4 between the vertical guide rail 11 and the vertical guide rail 11. An electromagnet switch 5 is provided on the other side of the mounting base 4, which is electrically connected to the electromagnet 15 and controls the operation of the electromagnet 15. The vertical guide rail 11 is made of metal. When the electromagnet 15 is working, it can attract the vertical guide rail 11 to realize the height positioning of the upper limit nut adjustment mechanism.

[0041] Based on the above structure, such as Figure 4 , 5As shown, during use, first place the base 1 on the lower clamp 16. Then, select the positioning holes on the positioning plate 12 according to the different sizes of the side screws 19 (specifically, the commonly used side screw sizes 19 in iron cores are M10, M12, and M16, corresponding to the positions of the upper, middle, and lower holes on the positioning plate 12, respectively; the positions of the three holes are determined according to the enterprise standard requirements for the extension length of side screws of different diameters). Install the positioning base 10 and fix it using the support screw 13 and positioning pin 14. Then, install the upper limit nut 17 and the lower limit nut 18 inside the side screw 19. The distance between the upper limit nut 17 and the lower limit nut 18 should be less than the thickness of the iron core 20. Install the side screw 19 into the holes of the lower clamp 16 and the upper clamp 21. At this time, the extension length of the side screw 19 is supported by the installation positioning base 10, which can ensure consistency and meet the enterprise standard. Next, use a wrench to tighten and secure the lower limit nut 18. Adjust the longitudinal adjustment platform 2 and the lateral adjustment and locking device 3 to precisely lock the lower limit nut 18, preventing the side screw 19 from rotating and causing the upper limit nut 17 and lower limit nut 18 to loosen. Then, install the mounting base 4 onto the vertical guide rail 11 and adjust the positioning overlap plate 9 to overlap with the iron core side column 22. Turn on the electromagnet switch 5 to fix the mounting base 4. Next, adjust the position of the upper longitudinal adjustment platform 6 and the lateral adjustment and positioning device 7 to position them onto the side screw 19, and use a wrench to tighten and secure the upper limit nut 17. Finally, remove all tooling and install the washers and locking nuts 23.

[0042] All of the components described above are existing technologies, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A device for controlling the extension, positioning, and limiting nut of a transformer core side screw, characterized in that, It includes a lower limit nut adjustment mechanism, an upper limit nut adjustment mechanism, and a screw extension positioning mechanism. The upper limit nut adjustment mechanism is slidably connected to the lower limit nut adjustment mechanism, and the lower limit nut adjustment mechanism is provided with a screw extension positioning mechanism at its bottom. The lower limit nut adjustment mechanism includes a base (1), a longitudinal adjustment platform (2), and a transverse adjustment and clamping device (3). A pair of longitudinal adjustment platforms (2) are slidably connected to the slide groove on the top surface of the base (1) by a slider. A transverse adjustment and clamping device (3) that is perpendicular to the longitudinal adjustment platform (2) in the horizontal direction is slidably connected on the longitudinal adjustment platform (2). A clamping recess is provided at the front end of the transverse adjustment and clamping device (3). The screw extension positioning mechanism includes a positioning base (10), a support screw (13), and a positioning pin (14). The positioning base (10) is arranged parallel to the bottom of the base (1). A positioning post (101) is vertically provided on the rear side of the top surface of the positioning base (10). A positioning pin (14) parallel to the positioning base (10) is vertically provided on the positioning post (101). The rear end of the base (1) is sleeved on the positioning post (101) and a positioning plate (12) parallel to the positioning post (101) is vertically provided on the bottom surface. Three positioning holes that match the size of the positioning pin (14) are opened from top to bottom on the positioning plate (12). The positioning base (10) is vertically threaded with a support screw (13), and the top of the support screw (13) abuts against the bottom surface of the base (1); The base (1) is vertically connected to a pair of vertical guide rails (11) on both sides, and the upper limit nut adjustment mechanism is slidably connected to the vertical guide rails (11); The upper limit nut adjustment mechanism includes a mounting base (4), an upper longitudinal adjustment platform (6), and a lateral adjustment and positioning device (7). The mounting base (4) is slidably connected to the vertical guide rail (11). A pair of upper longitudinal adjustment platforms (6) are slidably connected to the slide groove on the top surface of the mounting base (4) by a slider. A lateral adjustment and positioning device (7) that is perpendicular to the upper longitudinal adjustment platform (6) in the horizontal direction is slidably connected to the upper longitudinal adjustment platform (6). The front end of the lateral adjustment and positioning device (7) is set with a positioning recess. The mounting base (4) is connected to a mounting base positioning mechanism on one side. The mounting base positioning mechanism includes an upper positioning pin (8) and a positioning overlap plate (9). The positioning overlap plate (9) is slidably connected in a guide rail groove (41) opened on one side of the mounting base (4). The top of the guide rail groove (41) is threaded with an upper positioning pin (8). The upper positioning pin (8) is located in a positioning groove opened along the length direction at the center of the positioning overlap plate (9). The vertical guide rail (11) is made of metal. An electromagnet (15) is provided between the bottom surface of the mounting base (4) and the vertical guide rail (11). An electromagnet switch (5) electrically connected to the electromagnet (15) is provided on the other side of the mounting base (4).

2. The method of using the transformer core side screw extension positioning and limit nut control device as described in claim 1, characterized in that, Includes the following steps: First, place the base (1) on the lower clamp and install the positioning base (10) while using the support screw (13) and positioning pin (14) for fixation; Install the upper and lower limit nuts inside the side screw, with the distance between the upper and lower limit nuts being less than the core thickness. Install the side screw in the holes of the upper and lower clamps. At this time, the extension length of the side screw is supported by the mounting positioning base (10). Use a wrench to tighten the lower limit nut and adjust the longitudinal adjustment platform (2) and the lateral adjustment and clamping device (3) to clamp the lower limit nut. Install the mounting base (4) onto the vertical guide rail (11), and adjust the positioning overlap plate (9) so that it overlaps on the iron core side column. Turn on the electromagnet switch (5) to fix the mounting base (4). Adjust the position of the upper longitudinal adjustment platform (6) and the lateral adjustment and positioning device (7), position them on the side screw, and use a wrench to tighten the upper limit nut to fix it; Remove all tooling and install washers and lock nuts.

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