Welding workbench of current transformer
By designing a welding workbench including base, bracket, U-shaped plate and crossbar, the problem of high manual fixation costs and low safety in traditional welding process is solved, and the stability and safety of the welding process are achieved, ensuring that Welding quality.
Patent Information
- Application Number
- CN202420481697.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-12
Smart Images
Figure CN222448842U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of current transformers, and in particular relates to a welding workbench for current transformers. Background Art
[0002] As we all know, the current transformer is an instrument that converts the large current on the primary side into the small current on the secondary side for measurement based on the principle of electromagnetic induction. The current in the power generation, transformation, transmission, distribution and power consumption lines varies greatly, ranging from a few amperes to tens of thousands of amperes. In order to facilitate measurement, protection and control, it needs to be converted into a relatively uniform current. In addition, the voltage on the line is generally high, and direct measurement is very dangerous. The current transformer plays the role of current conversion and electrical isolation. The welding process of the primary terminal and the primary winding in the production process of the current transformer determines the performance and quality of the current transformer.
[0003] At present, in the traditional production process of current transformers, when welding the primary terminal and the primary winding, the primary winding and the secondary winding are generally fixed manually or by a robot. Small current transformers usually use manual fixing of the primary winding and the secondary winding, while large current transformers usually use a robot to hoist the primary winding and the secondary winding for welding.
[0004] However, it was found during use that the traditional welding method still has the following defects:
[0005] In the production process of small current transformers, the primary winding and the secondary winding are generally fixed manually. At least two people are required to operate the welding at the same time, one for fixing and the other for welding. The labor cost is high and it is easy to make accidental touch, leading to safety accidents. In the production process of large current transformers, a mechanical arm is generally used to lift and fix the secondary winding and the primary winding. This method is easy to damage the components during the fixing process, and the operation process is cumbersome. The welding process is complicated and the welding quality is difficult to guarantee. Utility Model Content
[0006] The purpose of the utility model is to provide a welding workbench for a current transformer, so as to solve the problems of high labor cost and low safety in traditional welding work when manual fixing is proposed in the above background technology, and the problem that parts are easily damaged when the mechanical arm is fixed and the welding quality is difficult to guarantee.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A welding workbench for a current transformer comprises a base, a bracket, a U-shaped plate and a cross bar; a groove for accommodating a primary terminal is provided on the upper surface of the base for fixing the primary terminal during welding; the bracket is two rectangular plates parallel to each other, the lower ends of the two rectangular plates are welded to the upper surface of the base, and the groove is located between the two rectangular plates; vertical adjustment holes are provided on the two rectangular plates for adjusting the relative position between the primary terminal and the primary winding according to the size of the product; the U-shaped plate is arranged on the inner side of the two rectangular plates; an adjusting bolt and a gasket are provided on the outer side of the U-shaped plate, the adjusting bolt is connected to the U-shaped plate through the vertical adjustment hole, and the up and down movement of the U-shaped plate can be controlled by adjusting the tightness of the bolt; the two ends of the cross bar are overlapped on the U-shaped plate; the outer diameter of the cross bar is smaller than the inner diameter of the secondary winding, so as to ensure that the cross bar can pass through the inner diameter of the secondary winding and overlap on the U-shaped plate.
[0009] Preferably, the vertical adjustment hole is a rectangular hole, and the height of the rectangular hole is greater than the horizontal width, which is used to provide more vertical adjustment range for the U-shaped plate and can adjust the position of the U-shaped plate according to primary windings and secondary windings of different sizes.
[0010] Preferably, the outer diameter of the cross bar is larger than the horizontal width of the rectangular hole, so as to ensure that the cross bar cannot pass through the rectangular hole, thereby facilitating the disassembly of the cross bar.
[0011] Preferably, the vertical adjustment hole is an oblong hole, and the long axis of the oblong hole is located in the vertical direction. By setting the long axis in the vertical direction, the height of the U-shaped plate can be adjusted more flexibly to meet the welding requirements of current transformers of different sizes.
[0012] Preferably, the outer diameter of the cross bar is larger than the maximum horizontal width of the oblong hole, so as to ensure that the cross bar cannot pass through the rectangular hole, thereby fixing the position of the cross bar.
[0013] Preferably, the length of the cross bar is less than the minimum distance between the two rectangular plates, so as to ensure that the cross bar can be flexibly overlapped on the U-shaped plate.
[0014] Preferably, the groove is an I-shaped groove, which is used to fix the primary terminal more firmly on the welding workbench and provide better stability.
[0015] Preferably, the curvature radius of the inner side of the U-shaped plate is equal to the curvature radius of the outer side of the cross bar, so that the U-shaped plate can hold the cross bar well and improve the stability of the cross bar installation.
[0016] Preferably, the side wall of the U-shaped plate is provided with a threaded hole cooperating with an adjusting bolt, so as to cooperate with the adjusting bolt to fix the U-shaped plate.
[0017] Preferably, the side wall of each U-shaped plate is provided with two or three threaded holes to improve the stability of the U-shaped plate when fixed on the bracket.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] The utility model provides a stable welding workbench for a current transformer by arranging a base, a bracket, a U-shaped plate and a cross bar, and solves the problems of high labor cost and low safety in manual fixing in traditional welding work, and the problems of easy damage to components and difficult guarantee of welding quality when a mechanical arm is fixed; a groove for accommodating a primary terminal is provided on the upper surface of the base, which is used to fix the primary terminal during welding; the bracket is two rectangular plates parallel to each other, the lower ends of the two rectangular plates are welded to the upper surface of the base, and the groove is located between the two rectangular plates; vertical adjustment holes are provided on the two rectangular plates, which are used to adjust the height position according to the requirements of the product; the U-shaped plate is arranged on the inner side of the two rectangular plates; an adjusting bolt and a gasket are arranged on the outer side of the U-shaped plate, the adjusting bolt is connected to the U-shaped plate through the vertical adjustment hole, and the up and down movement of the U-shaped plate can be controlled by adjusting the tightness of the bolt; the two ends of the cross bar are overlapped on the U-shaped plate; the outer diameter of the cross bar is smaller than the inner diameter of the secondary winding, which is used to ensure that the cross bar can pass through the inner diameter of the secondary winding and overlap on the U-shaped plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of the preferred embodiment of the utility model in working state;
[0021] Figure 2 This is a schematic diagram of the structure of a preferred embodiment of the utility model in a non-working state;
[0022] Figure 3 A partial cross-sectional view of a preferred embodiment of the utility model.
[0023] In the figure: 1. base; 2. bracket; 3. U-shaped plate; 4. adjusting bolt; 5. cross bar; 6. primary terminal; 7. primary winding; 8. secondary winding; 9. groove. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.
[0025] As shown Figure 1-Figure 3 As shown:
[0026] First embodiment: A welding workbench for a current transformer, comprising a base 1, a bracket 2, a U-shaped plate 3 and a cross bar 5; a groove 9 for accommodating a primary terminal 6 is provided on the upper surface of the base 1, which is used to fix the primary terminal 6 during welding; the bracket 2 is two rectangular plates parallel to each other, the lower ends of the two rectangular plates are welded to the upper surface of the base 1, and the groove 9 is located between the two rectangular plates; vertical adjustment holes are provided on the two rectangular plates, which are used to adjust the relative position between the primary terminal 6 and the primary winding 7 according to the size of the product; the U-shaped plate 3 is arranged on the inner side of the two rectangular plates; an adjusting bolt 4 and a gasket are provided on the outer side of the U-shaped plate 3, the adjusting bolt 4 is connected to the U-shaped plate 3 through the vertical adjustment hole, and the up and down movement of the U-shaped plate 3 can be controlled by adjusting the tightness of the bolt 4; the two ends of the cross bar 5 are overlapped on the U-shaped plate 3; the outer diameter of the cross bar 5 is smaller than the inner diameter of the secondary winding 8.
[0027] Second embodiment: On the basis of the above-mentioned first embodiment, in order to provide the U-shaped plate 3 with more vertical adjustment range, the position of the U-shaped plate 3 can be adjusted according to the primary winding 7 and the secondary winding 8 of different sizes, and the vertical adjustment hole is a rectangular hole, and the height of the rectangular hole is greater than the horizontal width.
[0028] The third embodiment: on the basis of the above second embodiment, in order to ensure that the cross bar 5 cannot pass through the rectangular hole, thereby facilitating the removal of the cross bar, the outer diameter of the cross bar 5 is greater than the horizontal width of the rectangular hole.
[0029] Fourth embodiment: Based on the above-mentioned first embodiment, the vertical adjustment hole is an oblong hole, and the long axis of the oblong hole is located in the vertical direction. By setting the long axis in the vertical direction, the height of the U-shaped plate 3 can be adjusted more flexibly to adapt to the welding requirements of current transformers of different sizes.
[0030] Fifth embodiment: Based on the fourth embodiment, in order to ensure that the cross bar 5 cannot pass through the vertical adjustment hole, thereby fixing the position of the cross bar 5, the outer diameter of the cross bar 5 is greater than the maximum horizontal width of the oblong hole.
[0031] Sixth embodiment: Based on the above first embodiment, in order to ensure that the cross bar 5 can be flexibly overlapped on the U-shaped plate 3, the length of the cross bar 5 is less than the minimum distance between the two rectangular plates.
[0032] Seventh embodiment: Based on the above first embodiment, in order to more firmly fix the primary terminal 6 on the welding workbench and provide better stability, the groove 9 is an I-shaped groove.
[0033] Eighth embodiment: Based on the first embodiment, in order to enable the U-shaped plate to hold the cross bar tightly and improve the stability of the cross bar installation, the curvature radius of the inner side of the U-shaped plate 3 is equal to the curvature radius of the outer side of the cross bar 5.
[0034] Ninth embodiment: Based on the first embodiment, in order to cooperate with the adjusting bolt 4 and fix the U-shaped plate 3 at a specific height, a threaded hole cooperating with the adjusting bolt 4 is opened on the side wall of the U-shaped plate 3.
[0035] The tenth embodiment: based on the seventh embodiment, in order to improve the stability of the U-shaped plate fixed on the bracket, two or three threaded holes are opened on the side wall of each U-shaped plate.
[0036] The utility model includes a base 1, a bracket 2, a U-shaped plate 3 and a cross bar 5; in order to fix the primary terminal 6 during welding, a groove 9 for accommodating the primary terminal 6 is provided on the upper surface of the base 1; the bracket 2 is two rectangular plates parallel to each other, the lower ends of the two rectangular plates are welded to the upper surface of the base 1, and the groove 9 is located between the two rectangular plates; in order to adjust the height position of the U-shaped plate 3 according to product requirements, vertical adjustment holes are provided on the two rectangular plates; the U-shaped plate 3 is arranged on the inner side of the two rectangular plates; an adjusting bolt 4 is provided on the outer side of the U-shaped plate 3, and the adjusting bolt 4 is connected to the U-shaped plate 3 through the vertical adjusting hole, and the up and down movement of the U-shaped plate 3 can be controlled by adjusting the tightness of the bolt 4; the two ends of the cross bar 5 are overlapped on the U-shaped plate 3; the outer diameter of the cross bar 5 is smaller than the inner diameter of the secondary winding 8.
[0037] Working principle:
[0038] Before welding, loosen the adjusting bolt 4, adjust the height of the U-shaped plate 3 according to the size of the primary winding 7 and the secondary winding 8, and tighten the adjusting bolt 4 after the adjustment to firmly fix the U-shaped plate 3 to support the weight of the cross bar 5, the primary winding 7 and the secondary winding 8; pass the cross bar 5 through the inner diameter of the secondary winding 8, pass the primary winding 7 through the inner diameter of the secondary winding 8, and overlap the cross bar 5 on the U-shaped plate 3; place the primary terminal 6 on the upper surface of the base 1, and the bottom protrusion is embedded in the groove 9 on the upper surface of the base 1 to align the welding positions of the primary winding 7 and the primary terminal 6.
[0039] During welding, both ends of the crossbar 5 are clamped between two rectangular plates to provide support for the primary winding 7 and the secondary winding 8 during the welding process.
[0040] After welding is completed, the cross bar 5 is lifted and separated from the U-shaped plate 3; the cross bar 5 is horizontally rotated 90 degrees, and then the cross bar 5 is lowered, the welded current transformer is placed on the base 1, and the cross bar 5 is pulled out.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A welding workbench for a current transformer, characterized in that: The invention comprises a base (1), a bracket (2), a U-shaped plate (3) and a cross bar (5); the upper surface of the base (1) is provided with a groove (9) for accommodating a primary terminal (6); the bracket (2) is two rectangular plates parallel to each other, the lower ends of the two rectangular plates are welded to the upper surface of the base (1), and the groove (9) is located between the two rectangular plates; the two rectangular plates are provided with vertical adjustment holes, and the U-shaped plate (3) is arranged on the inner sides of the two rectangular plates; an adjustment bolt (4) and a gasket are arranged on the outer side of the U-shaped plate (3), and the adjustment bolt (4) is connected to the U-shaped plate (3) through the vertical adjustment hole; the two ends of the cross bar (5) are overlapped on the U-shaped plate (3); the outer diameter of the cross bar (5) is smaller than the inner diameter of the secondary winding (8).
2. The welding workbench of a current transformer according to claim 1, characterized in that: The vertical adjustment hole is a rectangular hole, and the height of the rectangular hole is greater than the horizontal width.
3. The welding workbench of a current transformer according to claim 2, characterized in that: The outer diameter of the crossbar (5) is greater than the horizontal width of the rectangular hole.
4. The welding workbench for a current transformer according to claim 1, characterized in that: The vertical adjustment hole is an oblong hole, and the major axis of the oblong hole is located in the vertical direction.
5. The welding workbench for current transformer according to claim 4, characterized in that: The outer diameter of the crossbar (5) is greater than the maximum horizontal width of the oblong hole.
6. The welding workbench for current transformer according to claim 1, characterized in that: The length of the crossbar (5) is less than the minimum distance between the two rectangular plates.
7. The welding workbench for current transformer according to claim 1, characterized in that: The groove (9) is an I-shaped groove.
8. The welding workbench for current transformer according to claim 1, characterized in that: The curvature radius of the inner side of the U-shaped plate (3) is equal to the curvature radius of the outer side of the cross bar (5).
9. The welding workbench for current transformer according to claim 1, characterized in that: The side wall of the U-shaped plate (3) is provided with a threaded hole which cooperates with the adjusting bolt (4).
10. The welding workbench for current transformer according to claim 7, characterized in that: The side wall of each U-shaped plate (3) is provided with two or three threaded holes.