A precision punching device for traction transformer adjusting link

Abstract

The application discloses a precision punching device for a traction transformer adjusting link, and relates to the technical field of adjusting link installation devices, and specifically relates to a precision punching device for a traction transformer adjusting link. The adjusting link installation device comprises double-track sliding rails fixed on a workbench, sliding blocks I and II, clamps I and II, and a clamp tool. The clamp tool comprises a support plate, a multi-line flange support plate, a flange front baffle plate, and two flange rear baffle plates. The multi-line flange support plate corresponds to the clamps I and II, and the flange is arranged on the multi-line flange support plate, so that the adjusting link is located in the clamps I and II. A punching mechanism is fixed on a fixed seat of the sliding block I, and comprises a base and an L-shaped drill bit support frame. A downward drill bit is fixed at one end of the L-shaped drill bit support frame, and the drill bit is opposite to the position to be punched on the adjusting link during punching. A calibration mechanism comprises a calibration support frame and a calibrator, and the calibrator is aligned with the drill bit during punching. The application can adapt to punching of adjusting links with different lengths, avoid punching position deviation, and can also measure punching errors in real time and then control precise punching.

Description

Technical Field

[0001] This invention belongs to the technical field of traction transformer shifting link manufacturing equipment, specifically relating to a precision drilling device for traction transformer shifting link. Background Technology

[0002] Traction transformers are a crucial power supply component in electrified railway transportation, widely used both domestically and internationally. To meet the voltage stability requirements of the power supply equipment, traction transformers often need to have a gear shifting function. This function allows operators to manipulate the electric operating mechanism of the traction transformer's switch as needed, controlling the position of the circular hole above the gear shifting linkage, thereby achieving gear shifting. Therefore, the accuracy of the position of the circular hole above the gear shifting linkage is critical to ensuring voltage stability of the traction transformer.

[0003] The current method for fabricating the circular hole above the shifting rod of a traction transformer involves manual drilling. The drilling position is determined by the position of the standard hole on the flange fixed to one end of the shifting rod. Due to the length and weight of the shifting rod, multiple operators are required to complete the drilling task. One operator supports the flange at one end of the shifting rod to keep it perpendicular to the ground, another operator lifts the shifting rod to keep it parallel to the ground, and finally, a third operator uses a hand drill to drill the hole at the connection between the flange and the shifting rod. During the machining process, positional deviations caused by drilling vibrations result in inconsistent drilling accuracy, leading to poor accuracy of the circular hole position on the shifting rod. Ultimately, this results in the shifting accuracy of the traction transformer failing to meet the requirements of industrial production. Therefore, designing a precision drilling device for the shifting rod with high drilling accuracy and the ability to measure production errors in real time is particularly important. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems existing in the prior art and to provide a precision drilling device for the traction transformer shifting link. This precision drilling device can adapt to drilling shifting links of different lengths, has a wide range of applications, and avoids the position deviation of the flange and shifting link caused by drilling vibration. It can also measure the drilling error in real time and thus perform precision drilling control, resulting in high drilling precision.

[0005] To achieve the above objectives, the technical solution of the present invention is: a precision drilling device for a traction transformer shifting link, comprising a worktable, a drilling mechanism, a shifting link mounting device, and a calibration mechanism; the shifting link mounting device includes a double-track slide rail fixed on the worktable, slider I and slider II slidably fixed on the double-track slide rail, clamp I and clamp II fixed at corresponding positions between slider I and slider II, and a fixture; a fixing seat for the drilling mechanism is fixed at the upper end of one end of slider I; the fixture includes a support plate fixed on the worktable, a multi-segment flange support plate and a flange front baffle integrally formed with the support plate, rotatably fixed to the multi-segment flange. The two flanges at the lower end of the support plate are back baffles; the multi-segment flange support plate corresponds to clamp I and clamp II. After the flange of the adjusting rod is placed on the multi-segment flange support plate, its connecting rod is exactly located inside clamp I and clamp II; the drilling mechanism is fixed on the fixed seat of the slider I, and the drilling mechanism is fixed on the fixed seat of the drilling mechanism. It includes a base and an L-shaped drill bit support frame that is rotatably fixed on the base. The downward-facing drill bit is fixed at one end of the L-shaped drill bit support frame. When drilling, the drill bit is directly facing the position where the adjusting rod needs to be drilled; the calibration mechanism includes a calibration support frame fixed on the worktable and a calibrator fixed on the top of the calibration support frame. When drilling, the calibrator is aligned with the drill bit.

[0006] More preferably, the dual-track slide rail consists of two U-shaped tracks; both ends of slider I and slider II have snap-fit ​​grooves that can be slidably and tightly fitted with the U-shaped tracks; the fixing seat of the punching mechanism has three or more bolts fixed to the upper end of one end of slider I; the base of the punching mechanism has mounting holes that match the bolts on the fixing seat of the punching mechanism; after the bolts are inserted into the mounting holes, they are locked in place by nuts. This structure allows for easy disassembly, movement, and replacement of parts.

[0007] More preferably, the L-shaped drill bit support frame of the drilling mechanism includes a support shaft fixed on the base and an L-shaped sleeve shaft that is tightly fitted to the outside of the support shaft and can slide. The L-shaped sleeve shaft is sleeved on the outside of the support shaft. A limiting groove is opened on the support shaft along the length direction of the support shaft. A fixing cylinder is fixed to the outside of the L-shaped sleeve shaft. A limiting bolt is installed on the fixing cylinder. The limiting bolt is threaded onto the fixing cylinder and abuts against the limiting groove of the support shaft. The rotation controller of the drill bit is fixed to the upper end of the L-shaped sleeve shaft, and the rotation of the drill bit is controlled by a handle.

[0008] More preferably, the support position of the multi-segment flange support plate is an arc-shaped support surface formed by an even number of line segments with different slopes, and two line segments are symmetrically arranged with the same slope as the central axis perpendicular to the arc-shaped support surface; the flange front baffle and flange rear baffle are respectively distributed at the front and rear ends of the multi-segment flange support plate to clamp and fix the flange of the adjusting linkage.

[0009] More preferably, the calibrator of the calibration mechanism is a laser calibrator; both clamp I and clamp II are equipped with quick-locking buckles.

[0010] The beneficial effects of this invention are as follows: The sliding block I, sliding block II, clamp I, and clamp II of the gear shifting linkage mounting device can effectively clamp and fix gear shifting linkages of different lengths; the fixture tooling can limit the movement of flanges of different voltage levels; and the calibration mechanism can quickly and in real time determine the errors that occur during the drilling process. In summary, this invention effectively avoids positional deviations of the gear shifting linkage caused by drilling vibration through the gear shifting linkage mounting device, and the calibration mechanism enables precise real-time measurement and control of errors, improving the accuracy of gear shifting linkage drilling. It can adapt to drilling gear shifting linkages of different lengths and has a wide range of applications. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the punching mechanism in this invention;

[0013] Figure 3 This is a three-dimensional structural diagram of the gear shifting linkage mounting device after removing the fixture tooling in this invention;

[0014] Figure 4 This is a three-dimensional structural diagram of the calibration mechanism in this invention;

[0015] Figure 5 This is a three-dimensional structural diagram of the fixture tooling in this invention;

[0016] Figure 6 This is a three-dimensional structural diagram of the fixture holding the adjusting linkage connecting plate in this invention. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0018] like Figures 1 to 6As shown, this embodiment includes a workbench 1, a drilling mechanism 2, a gear shifting linkage mounting device, and a calibration mechanism 4. The workbench 1 is a horizontal workbench with four support legs 11 installed at its lower four corners, and tie plates 12 are fixed between the four support legs 11. The gear shifting linkage mounting device includes a double-track slide rail 6 fixed on the workbench 1, sliders I 31 and II 32 slidably fixed on the double-track slide rail 6, clamps I 33 and II 34 fixed at corresponding positions between sliders I 31 and II 32, and a fixture 5. Preferably, quick-lock buckles are provided on clamps I 33 and II 34. A fixing seat for the drilling mechanism 2 is fixed at the upper end of one end of slider I 31. The drilling mechanism 2 is fixed on a mounting base, which includes a base 21 and an L-shaped drill bit support frame 22 rotatably fixed on the base 21. A downward-facing drill bit 23 is fixed to one end of the L-shaped drill bit support frame 22. During drilling, the drill bit 23 is positioned directly opposite the desired drilling location on the adjusting linkage 7. Preferably, the double-track slide rail 6 consists of two U-shaped tracks; both ends of slider I 31 and slider II 32 have snap-fit ​​grooves that slidably and tightly fit with the U-shaped tracks. The mounting base of the drilling mechanism 2 has three (or four, five, etc.) bolts 35 fixed to the upper end of one end of slider I 31; the base 21 of the drilling mechanism 2 has mounting holes that match the bolts 35 on the mounting base; after the bolts 35 are inserted into the mounting holes, they are locked in place by nuts. The fixture 5 includes a support plate 51 fixed on the workbench 1, a multi-segment flange support plate 52 and a flange front baffle 53 integrally formed with the support plate 51, and two flange rear baffles 54 rotatably fixed to the lower end of the multi-segment flange support plate 52 by screws 55. The multi-segment flange support plate 52 corresponds to clamps I 33 and II 34. After the flange 71 of the adjusting linkage 7 is placed on the multi-segment flange support plate 52, its linkage is located exactly within clamps I 33 and II 34. Preferably, the support position of the multi-segment flange support plate 52 is an arc-shaped support surface formed by an even number of line segments with different slopes. Two line segments are symmetrically arranged with the same slope, symmetrically distributed with the central axis perpendicular to the arc-shaped support surface as the axis. The flange front baffle 53 and the two flange rear baffles 54 are respectively distributed at the front and rear ends of the multi-segment flange support plate 52 to clamp and fix the flange 71 of the adjusting linkage 7. The calibration mechanism 4 includes a calibration support frame 41 fixed on the workbench 1 and a calibrator 42 fixed to the top of the calibration support frame 41. When drilling, the calibrator 42 is aligned with the drill bit 23. Preferably, the calibrator 42 of the calibration mechanism 4 is a laser calibrator.Preferably, the L-shaped drill bit support frame 22 of the drilling mechanism includes a support shaft 221 fixed on the base 21 and an L-shaped sleeve shaft 222 that is tightly fitted to the outside of the support shaft 221 and can slide. The L-shaped sleeve shaft 222 is sleeved on the outside of the support shaft 221. A limiting groove 224 along the length direction of the support shaft is opened on the support shaft 221. A fixing cylinder 25 is fixed to the outside of the L-shaped sleeve shaft 222. A limiting bolt 223 is installed on the fixing cylinder 25. The limiting bolt 223 is threaded onto the fixing cylinder 25 and abuts against the limiting groove 224 of the support shaft 221. The rotation controller 24 of the drill bit 23 is fixed to the upper end of the L-shaped sleeve shaft 222, and the rotation of the drill bit 23 is controlled by the handle 241.

[0019] The working principle of this embodiment is as follows: The connecting rod of the adjusting connecting rod 7 is placed inside the clamps I33 and II34 of slider I31 and slider II32. The distance between slider I31 and slider II32 is adjusted to accommodate different lengths of adjusting connecting rods. After adjustment, the connecting rod is fixed by the quick-locking buckles on clamps I33 and II34. The flange of the adjusting connecting rod is placed above the multi-segment adjustable clamp 5. The multi-segment flange support plate 52 automatically adapts to flanges of different outer diameters and is clamped and fixed by the flange front baffle 53 and the two flange rear baffles 54. The position of the drill bit 23 of the drilling mechanism and the circular hole above the flange is adjusted by the laser projected by the calibrator 42 (laser calibrator in this embodiment). The adjusting connecting rod is pushed into the flange by the sliding clamp module 3, and the drilling machine 201 of the drilling mechanism 2 performs drilling work. During this process, the drilling error range in production can be determined by the laser projected by the laser calibration module 4.

[0020] Of course, there are other embodiments of the present invention. Without departing from the spirit and essence of the present invention, those skilled in the art can make corresponding changes and modifications according to the present invention. However, these corresponding changes and modifications should all be considered improvements of equivalent technology and fall within the protection scope of the claims of the present invention.

Claims

1. A precision drilling device for a traction transformer shifting linkage, characterized in that: The system includes a workbench, a drilling mechanism, a gear shifting linkage mounting device, and a calibration mechanism. The gear shifting linkage mounting device includes a double-track slide rail fixed to the workbench, sliders I and II slidably fixed to the double-track slide rail, clamps I and II fixed at corresponding positions between sliders I and II, and a fixture. A fixing seat for the drilling mechanism is fixed to the upper end of slider I. The fixture includes a support plate fixed to the workbench, a multi-segment flange support plate and a flange front baffle integrated with the support plate, and two flange rear baffles rotatably fixed to the lower end of the multi-segment flange support plate. Plate; the multi-segment flange support plate corresponds to clamp I and clamp II. After the flange of the adjusting linkage is placed on the multi-segment flange support plate, its linkage is exactly located inside clamp I and clamp II; the drilling mechanism is fixed on the fixed seat of the drilling mechanism, which includes a base and an L-shaped drill bit support frame that is rotatably fixed on the base. The downward-facing drill bit is fixed at one end of the L-shaped drill bit support frame. When drilling, the drill bit is directly facing the position where the adjusting linkage needs to be drilled; the calibration mechanism includes a calibration support frame fixed on the worktable and a calibrator fixed on the top of the calibration support frame. When drilling, the calibrator is aligned with the drill bit.

2. The precision drilling device for the traction transformer shifting linkage according to claim 1, characterized in that: The dual-track slide rail consists of two convex-shaped tracks; both ends of slider I and slider II have snap-fit ​​grooves that can be slidably and tightly fitted with the convex-shaped tracks; the fixing seat of the punching mechanism has three or more bolts fixed to the upper end of one end of slider I; the base of the punching mechanism has mounting holes that match the bolts on the fixing seat of the punching mechanism; after the bolts are inserted into the mounting holes, they are locked and fixed by nuts.

3. The precision drilling device for the traction transformer shifting link according to claim 1 or 2, characterized in that: The L-shaped drill bit support frame of the drilling mechanism includes a support shaft fixed on the base and an L-shaped sleeve shaft that is tightly fitted to the outside of the support shaft and can slide. The L-shaped sleeve shaft is sleeved on the outside of the support shaft. A limiting groove is opened on the support shaft along the length direction of the support shaft. A fixing cylinder is fixed to the outside of the L-shaped sleeve shaft. The fixing cylinder is equipped with a limiting bolt. The limiting bolt is threaded onto the fixing cylinder and abuts against the limiting groove of the support shaft. The rotation controller of the drill bit is fixed to the upper end of the L-shaped sleeve shaft, and the rotation of the drill bit is controlled by a handle.

4. The precision drilling device for the traction transformer shifting link according to claim 3, characterized in that: The support position of the multi-segment flange support plate is an arc-shaped support surface formed by an even number of line segments with different slopes. Two line segments are symmetrically arranged with the central axis perpendicular to the arc-shaped support surface as the center, and the slopes are the same. The flange front baffle and flange rear baffle are respectively distributed at the front and rear ends of the multi-segment flange support plate to clamp and fix the flange of the adjusting linkage.

5. The precision drilling device for the traction transformer shifting link according to claim 4, characterized in that: The calibrator of the calibration mechanism is a laser calibrator; both clamp I and clamp II are equipped with quick-locking buckles.

6. The precision drilling device for the traction transformer shifting link according to claim 1 or 2, characterized in that: The support position of the multi-segment flange support plate is an arc-shaped support surface formed by an even number of line segments with different slopes. Two line segments are symmetrically arranged with the central axis perpendicular to the arc-shaped support surface as the center, and the slopes are the same. The flange front baffle and flange rear baffle are respectively distributed at the front and rear ends of the multi-segment flange support plate to clamp and fix the flange of the adjusting linkage.

7. The precision drilling device for the traction transformer shifting link according to claim 6, characterized in that: The calibrator of the calibration mechanism is a laser calibrator; both clamp I and clamp II are equipped with quick-locking buckles.

8. The precision drilling device for the traction transformer shifting link according to claim 3, characterized in that: The calibrator of the calibration mechanism is a laser calibrator; both clamp I and clamp II are equipped with quick-locking buckles.

9. The precision drilling device for the traction transformer shifting link according to claim 1 or 2, characterized in that: The calibrator of the calibration mechanism is a laser calibrator; both clamp I and clamp II are equipped with quick-locking buckles.

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