Rotor copper ring positioning auxiliary tool

Abstract

The utility model relates to the technical field of rotor copper ring welding, in particular to a rotor copper ring positioning auxiliary tool which comprises a workbench frame, a positioning table and a plurality of limiting assemblies. The positioning table is mounted on the working rack; the multiple sets of limiting pieces are distributed in the circumferential direction of the workbench frame, and the limiting assembly abuts against the outer side wall of the rotor copper ring. In the arranged limiting piece, a sliding plate slides along a sliding groove, and the extension amount of the sliding plate is adjusted according to rotor copper rings with different diameters, so that the end part of the sliding plate abuts against the outer side wall of the rotor copper ring, the rotor copper rings with different specifications are limited, and the applicability of the limiting assembly is improved; the intersection point of the extension lines of the plurality of sliding plates in the length direction coincides with the circle center of the rotor copper ring, so that errors are avoided during positioning, and the positioning precision of the rotor copper ring is improved; meanwhile, when a plurality of rotor copper rings of the same specification are positioned, the extension amount of the sliding plate can be adjusted only according to the last positioning scale, repeated measurement is avoided, and the welding efficiency of the rotor copper rings is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rotor copper ring welding, and in particular to a rotor copper ring positioning auxiliary tool. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor that is powered by a 380V three-phase alternating current. Because the rotor and stator rotating magnetic fields of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor.

[0003] The three-phase asynchronous motor is composed of two basic parts: the fixed part and the rotor. The rotor is installed in the inner cavity of the stator and is supported on two end covers with the help of bearings. The rotor of the three-phase asynchronous motor is composed of a rotor core, a rotor winding and a rotating shaft. The cage rotor winding is a common rotor winding. The cage rotor winding is composed of guide bars placed in the rotor core slots and copper rings at both ends. For high-power motors, guide bars are often inserted into the rotor core slots, and then rotor copper rings are welded on both ends of the guide bars.

[0004] When welding the copper ring, the operator places the copper ring on a special welding workbench, places the rotor winding with guide bars on the copper ring, makes the inductor and the copper ring close together, places solder and flux in the concave groove of the rotor copper ring, and the medium frequency power supply outputs a medium frequency current of 8-15 kHz, which is added to the medium frequency inductor after passing through the medium frequency transformer. The current generates an alternating electromagnetic field, which induces eddy currents in the copper ring and heats the copper ring. After a period of time, the required temperature is reached, the solder melts and fills the weld, and after cooling, the rotor copper ring and the guide bars are tightly welded together to meet the process requirements of motor manufacturing.

[0005] In the existing method of placing the rotor copper ring, the operator first places the rotor copper ring on the welding workbench, then uses a steel ruler or other tools to measure the position of the rotor copper ring, and then manually performs position correction. The operation is cumbersome, resulting in low positioning efficiency of the rotor copper ring, thereby affecting the welding efficiency. Utility Model Content

[0006] In order to improve the welding efficiency of the rotor copper ring, the present application provides a rotor copper ring positioning auxiliary tool.

[0007] The rotor copper ring positioning auxiliary tool provided in this application adopts the following technical solution:

[0008] A rotor copper ring positioning auxiliary tool, comprising a workbench, a positioning table and a plurality of groups of limit components;

[0009] The positioning platform is installed on the workbench;

[0010] A plurality of groups of the limiting components are distributed along the circumference of the workbench, and the limiting components abut against the outer side wall of the copper ring.

[0011] By adopting the above technical solution, before welding the rotor copper ring, first adjust the limit assembly, then place the rotor copper ring on the positioning table, and adjust the position of the rotor copper ring so that the outer wall of the rotor copper ring abuts against the limit assembly, thereby achieving rapid positioning of the rotor copper ring, improving the positioning efficiency of the rotor copper ring, and further improving the welding efficiency of the rotor copper ring.

[0012] In a specific possible implementation scheme, the limiting assembly includes a side plate, a fixed block, a sliding plate and a limiting member; the side plate is fixedly arranged on the side wall of the workbench, the fixed block is detachably fixedly connected to the top wall of the side plate, a sliding groove is provided on the fixed block, the sliding plate passes through the sliding groove, and the sliding plate slides along the sliding groove, and the end of the sliding plate abuts against the side wall of the rotor copper ring; the limiting member is fixedly arranged on the fixed block;

[0013] The intersection of the lengthwise extension lines of the sliding plates of the plurality of groups of the limit assemblies coincides with the center of the rotor copper ring.

[0014] By adopting the above technical solution, the sliding plate slides along the sliding groove, which makes it easy to adjust the extension amount of the sliding plate according to the rotor copper rings of different diameters, so that the end of the sliding plate abuts the side wall of the rotor copper ring, thereby realizing the limiting of rotor copper rings of different specifications, thereby improving the applicability of the limiting component; at the same time, the intersection of the extension lines of the length directions of multiple sliding plates coincides with the center of the rotor copper ring, thereby avoiding errors in positioning the rotor copper ring and improving the positioning accuracy of the rotor copper ring.

[0015] In a specific possible implementation scheme, the limiting assembly further includes guide blocks, the length directions of the two guide blocks are parallel to the length direction of the sliding groove, the two guide blocks are arranged in parallel, and the sliding plate is clamped between the two guide blocks.

[0016] By adopting the above technical solution, the sliding plate is engaged between the guide blocks, which prevents the end of the sliding plate from swinging when the sliding plate slides along the sliding groove, causing the abutment position between the sliding plate and the outer wall of the rotor copper ring to change, thereby further improving the positioning accuracy of the rotor copper ring.

[0017] In a specific possible implementation manner, the top wall of the sliding plate is provided with scales for positioning.

[0018] By adopting the above technical solution, the scale set on the sliding plate makes it convenient for the operator to directly observe the length of the sliding plate extending out of the sliding groove, which is convenient for adjusting the position of the sliding plate, thereby improving the positioning accuracy of the rotor copper ring; at the same time, when batch processing multiple rotor copper rings of the same specification, it is only necessary to adjust the extension amount of the sliding plate according to the last positioning scale to ensure that the positioning position of the rotor copper ring is consistent, avoid repeated measurement work, improve the positioning efficiency of the rotor copper ring, and then improve the welding efficiency of the rotor copper ring.

[0019] In a specific possible implementation manner, the limiting member includes a locking bolt, the locking bolt passes through one end of the fixing block and is pressed against the top wall of the sliding plate, and the locking bolt is threadedly connected to the fixing block.

[0020] By adopting the above technical solution, the limit piece is set, and the locking bolt is rotated so that the locking bolt tightens the sliding plate, so that the sliding plate can be locked in the sliding groove after the extension amount of the sliding plate is adjusted, thereby facilitating rapid adjustment of the sliding plate.

[0021] In a specific possible implementation manner, a mounting hole for mounting the positioning platform is opened on the top wall of the workbench frame, the mounting hole coincides with the center of the positioning platform, and the top wall of the positioning platform is arranged lower than the top wall of the workbench.

[0022] By adopting the above technical solution, the provided mounting holes facilitate the installation of the positioning table on the workbench frame. At the same time, the top wall of the positioning table is lower than the top wall of the workbench, which avoids the accumulation of welding slag on the workbench frame after welding is completed, thereby affecting the welding of other rotor copper rings. At the same time, the top wall of the positioning table is lower than the top wall of the workbench, thereby avoiding interference between the sliding plate and the positioning table during the movement of the sliding plate, thereby facilitating the abutment between the sliding plate and the outer wall of the rotor copper ring.

[0023] In a specific possible implementation manner, the positioning platform is fixedly connected to the workbench frame, and a clearance hole is opened on the positioning platform, and the clearance hole coincides with the center of the mounting hole.

[0024] By adopting the above technical solution, the set clearance hole makes it easy for the rotating shaft to extend into the clearance hole when welding the rotor copper ring and the guide bar of the rotor winding, avoiding interference between the rotating shaft and the positioning table, and facilitating the welding of the rotor copper ring and the guide bar.

[0025] In a specific possible implementation mode, a plurality of lifting ears are arranged on two opposite side walls of the workbench, and hanging holes are opened on the lifting ears.

[0026] By adopting the above technical solution, the hook of the external hanging device is passed through the hanging hole, and the hanging device hangs the hanging belt to adjust the position of the workbench. The provided lifting lugs facilitate the position movement of the rotor copper ring positioning auxiliary tool.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. A limiter is provided, and the sliding plate slides along the sliding groove. According to the rotor copper rings of different diameters, the extension amount of the sliding plate is adjusted so that the end of the sliding plate abuts against the side wall of the rotor copper ring, thereby limiting the rotor copper rings of different specifications and improving the applicability of the limiter assembly; the intersection of the extension lines of the length directions of the multiple sliding plates coincides with the center of the rotor copper ring, which is convenient for avoiding errors in positioning the rotor copper ring and improving the positioning accuracy of the rotor copper ring; at the same time, when positioning multiple rotor copper rings of the same specification, it is only necessary to adjust the extension amount of the sliding plate according to the last positioning scale, thereby avoiding repeated measurement work, improving the positioning efficiency of the rotor copper ring, and further improving the welding efficiency of the rotor copper ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The invention discloses a rotor copper ring positioning auxiliary tool and an overall structural diagram of the rotor copper ring.

[0030] Figure 2 The overall structure diagram of a rotor copper ring positioning auxiliary tool.

[0031] Figure 3 yes Figure 2 Enlarged view of part A.

[0032] Description of the drawings: 1. Workbench; 11. Mounting hole; 12. Lifting ear; 121. Hanging hole; 2. Positioning table; 21. Clearance hole; 3. Limiting assembly; 31. Side panel; 32. Fixed block; 321. Sliding groove; 33. Sliding plate; 331. Scale; 34. Limiting piece; 341. Locking bolt; 35. Guide block. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The embodiment of the present application discloses a rotor copper ring positioning auxiliary tool.

[0035] Reference Figure 1 and Figure 2 , a rotor copper ring positioning auxiliary tool, comprising a workbench 1, a positioning table 2 and a plurality of limiter components 3;

[0036] The positioning table 2 is installed on the workbench 1; multiple groups of limit members 34 are distributed along the circumference of the workbench 1, and multiple groups of limit components 3 are in contact with the outer wall of the rotor copper ring. The limit components 3 can be two groups, three groups, or four groups, as long as the precise positioning of the rotor copper ring is achieved. In this embodiment, two groups of limit components 3 are arranged, and the two groups of limit components 3 are arranged vertically at 90 degrees on the top wall of the workbench 1.

[0037] Reference Figure 1 and Figure 2 A mounting hole 11 is provided in the middle position of the workbench 1. The mounting hole 11 is a stepped hole. A positioning platform 2 is provided on the stepped surface of the mounting hole 11. The positioning platform 2 is used to place the rotor copper ring. A clearance hole 21 is provided in the middle position of the positioning platform 2. The clearance hole 21 is concentrically arranged with the positioning platform 2. The clearance hole 21 is used to place the rotating shaft of the motor to avoid interference between the rotating shaft and the positioning platform 2. The clearance hole 21 coincides with the center of the mounting hole 11; a plurality of lifting ears 12 are fixedly provided on the top wall of the workbench 1 in the circumferential direction. In this embodiment, the lifting ears 12 are bolted to the top wall of the workbench 1. A hanging hole 121 is provided on the lifting ears 12. The lifting ears 12 can be two The number of lifting ears 12 can be three or four, as long as the workbench 1 can be stably lifted. In this embodiment, four lifting ears 12 are arranged, and the four lifting ears are arranged in two groups. The two groups of lifting ears 12 are symmetrically distributed on the opposite sides of the workbench 1, and the lifting ears 12 are arranged close to the corners of the workbench 1. A hanging hole 121 is opened on the lifting ear 12; when the workbench 1 needs to be lifted and moved, the hook of the external hanging device is hung in the hanging hole 121, and the operator lifts the workbench 1 through the lifting ear of the lifting device, and the hook lifts the workbench 1 through the lifting ear 12, so as to realize the position movement of the rotor copper ring positioning auxiliary device.

[0038] Reference Figure 1 and Figure 3The limiting assembly 3 includes a side plate 31, a fixed block 32, a sliding plate 33, a guide block 35 and a limiting member 34; the side plate 31 is "L"-shaped, the vertical portion of the side plate 31 is bolted to the side wall of the workbench 1, the horizontal portion of the side plate 31 is flush with the top wall of the workbench 1, the fixed block 32 is bolted to the horizontal portion of the side plate 31, a sliding groove 321 is provided in the middle position of the fixed block 32, the sliding plate 33 passes through the sliding groove 321 and slides along the length direction of the sliding groove 321, and a scale 331 is provided on the top wall of the sliding plate 33 along the length direction for measuring and positioning the placement position of the rotor copper ring; the limiting member 34 includes a lock Tightening bolt 341, locking bolt 341 passes through the top wall of fixed block 32 and is threadedly connected to fixed block 32, the bottom of locking bolt 341 abuts against the top wall of sliding plate 33, after the protruding length of sliding plate 33 is determined, locking bolt 341 fixes sliding plate 33 in sliding groove 321; two guide blocks 35 are bolted to the top wall of workbench 1, and the two guide blocks 35 are arranged in parallel, the sliding plate 33 is clamped between the two guide blocks 35, the two guide blocks 35 limit the sliding plate 33 to prevent the end of the sliding plate 33 close to the rotor copper ring from swinging during sliding, resulting in deviation in the positioning position of the rotor copper ring.

[0039] The implementation principle of a rotor copper ring positioning auxiliary tool in this embodiment is as follows: before welding the rotor copper ring, first fix the limit assembly 3 on the workbench, the operator applies force to the locking bolt 341, loosens the locking bolt 341, and then adjusts the sliding plate 33 so that the sliding plate 33 slides along the sliding groove 321, controls the distance that the sliding groove 321 extends out of the sliding groove 321, so that the distance between the ends of the plurality of sliding plates 33 and the center of the positioning platform 2 and the radius of the rotor copper ring are equal, and then records the distance that the sliding plate 33 extends out of the sliding groove 321 at this time according to the scale on the top wall of the sliding plate 33, screws the locking bolt 341, presses the sliding plate 33 tightly into the sliding groove 321, and then places the rotor copper ring on the positioning platform 2, and adjusts the rotor copper ring so that the rotor The outer wall surface of the sub-copper ring fits with the ends of multiple sliding plates 33, and then the rotor winding is placed on the rotor copper ring so that the guide bars of the rotor winding are engaged in the grooves of the rotor copper ring. Finally, the locking bolts 341 are loosened, the sliding plate 33 is taken out, and the operator starts the welding equipment to weld the rotor copper ring. After welding is completed, the operator removes the rotor copper ring and the rotor winding, and then places the sliding plate 33 in the sliding groove 321. According to the previous scale, the distance of the sliding plate extending out of the sliding groove 321 is controlled to be consistent with the previous one, and then the locking nut is tightened to fix the sliding plate. The operator places the new rotor copper ring on the positioning table 2, and makes the outer wall surface of the rotor copper ring fit with the ends of multiple sliding plates 33, and performs a new round of welding operation.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rotor copper ring positioning auxiliary tool, characterized in that: It comprises a workbench (1), a positioning table (2) and a plurality of groups of limit components (3); The positioning platform (2) is installed on the working platform (1); A plurality of groups of the limit assemblies (3) are distributed along the circumference of the workbench (1), and the limit assemblies (3) are in contact with the outer side wall of the rotor copper ring; The limiting assembly (3) comprises a side plate (31), a fixed block (32), a sliding plate (33) and a limiting member (34); the side plate (31) is fixedly arranged on the side wall of the workbench (1); the fixed block (32) is detachably fixedly connected to the top wall of the side plate (31); a sliding groove (321) is provided on the fixed block (32); the sliding plate (33) passes through the sliding groove (321), and the sliding plate (33) slides along the sliding groove (321); the limiting member (34) is fixedly arranged on the fixed block (32); The intersection of the lengthwise extension lines of the sliding plates (33) of the plurality of groups of the position limiting components (3) coincides with the center of the rotor copper ring.

2. A rotor copper ring positioning auxiliary tool according to claim 1, characterized in that: The limiting assembly (3) further comprises guide blocks (35), the length directions of the two guide blocks (35) are parallel to the length direction of the sliding groove (321), the two guide blocks (35) are arranged in parallel, and the sliding plate (33) is clamped between the two guide blocks (35).

3. A rotor copper ring positioning auxiliary tool according to claim 1, characterized in that: The top wall of the sliding plate (33) is provided with a scale (331) for positioning.

4. The rotor copper ring positioning auxiliary tool according to claim 1, characterized in that: The limiting member (34) comprises a locking bolt (341), wherein the locking bolt (341) passes through one end of the fixing block (32) and is pressed against the top wall of the sliding plate (33), and the locking bolt (341) is threadedly connected to the fixing block (32).

5. The rotor copper ring positioning auxiliary tool according to claim 1, characterized in that: A mounting hole (11) for mounting the positioning platform (2) is provided on the top wall of the workbench (1); the mounting hole (11) coincides with the center of the positioning platform (2); and the top wall of the positioning platform (2) is arranged lower than the top wall of the workbench (1).

6. A rotor copper ring positioning auxiliary tool according to claim 5, characterized in that: The positioning platform (2) is fixedly connected to the workbench frame (1), and a clearance hole (21) is provided on the positioning platform (2), and the center of the clearance hole (21) coincides with the center of the mounting hole (11).

7. The rotor copper ring positioning auxiliary tool according to claim 1, characterized in that: A plurality of lifting ears (12) are arranged on two opposite side walls of the workbench (1), and hanging holes (121) are provided on the lifting ears (12).

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