Adjustable support tool for assembling large direct current motor stator end line

Abstract

The present application belongs to the technical field of large motor manufacturing equipment, and discloses an adjustable supporting tool for assembling the end line of a large DC motor stator, comprising a T-shaped positioning steel plate and at least two supporting screws, one end of the T-shaped positioning steel plate is provided with a longitudinal long slot, and the other end is provided with a transverse long slot; all the supporting screws are respectively arranged in the longitudinal long slot and the transverse long slot, the T-shaped positioning steel plate moves up and down along the axial direction of the supporting screws and is locked and fixed through a locking nut; the T-shaped positioning steel plate horizontally slides along the extension direction of the longitudinal long slot or the transverse long slot; the bottom of the supporting screw is provided with a magnetic suction base which is used for detachably adsorbing to the end face of the stator core. The present application realizes stepless height adjustment through the cooperation of the screw and the double nuts, does not need a cushion block, and a set of tool is suitable for multiple models of motors; the integral structure has no scattered small parts, is convenient to disassemble and has no risk of part falling, and is convenient to count; the bottom magnetic suction fixing ensures stable support, effectively improves the assembly precision and the operation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of large motor manufacturing equipment technology, specifically relating to an adjustable support fixture for assembling stator end lines of a large DC motor, which is suitable for assembly operations of stator end lines of various models of large DC motors with adjustable height, quick positioning, and convenient disassembly. Background Technology

[0002] In the manufacturing process of large DC motors, the assembly and welding of the stator end conductor bus (stator end wire) is one of the key processes, which requires the conductor bus to be precisely supported and positioned at a specific height at the end of the stator core.

[0003] Currently, the industry commonly uses a combination of ordinary steel plates and multi-specification pads for support and height adjustment. During operation, the operator places the steel plate at the end of the stator core and inserts pads of different thicknesses underneath the steel plate to adjust it to the required height of the busbar. Then, the busbar is mounted on the steel plate to complete assembly and welding.

[0004] However, the aforementioned prior art has the following significant drawbacks: (1) Poor compatibility and complicated spare parts: Due to the large variety of motor models and the large differences in the assembly height of the busbars, a large number of pads of different thicknesses are required, which makes tooling management difficult and inconvenient to use, and increases production preparation time.

[0005] (2) Difficult to disassemble after welding: The high temperature and pressure generated during the welding process can easily cause the steel plate and the pad to be compacted, stuck or even slightly stuck, making disassembly very difficult and seriously affecting work efficiency.

[0006] (3) Potential quality issues: The multi-layered pad stacking structure is unstable. During disassembly, the pads are prone to accidentally falling and entering narrow gaps such as the stator commutation poles, making them difficult to remove. This results in foreign objects being left inside the motor, seriously affecting product safety.

[0007] (4) Difficult to count and cannot prevent omissions: There are many pads and they are of various specifications. It is difficult to count them quickly and accurately after use, and there is a risk of quality accidents caused by pads left inside the stator.

[0008] The root cause of the above problems is that the traditional method uses fixed steel plates and separate pads, lacks an integrated height adjustment structure, and does not have anti-fall-off or anti-drop-off designs, which cannot meet the needs of rapid adjustment and safe disassembly for multiple models. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable support fixture for assembling stator terminal wires of large DC motors. It can achieve stepless height adjustment without the need for pads, and is compatible with various motor models. It is easy to disassemble after welding without jamming. It eliminates the risk of pads falling off and prevents the hidden danger of foreign objects being left behind. It has a simple structure, few parts, and is easy to count and manage.

[0010] The technical solution to achieve the above objective is: an adjustable support fixture for assembling stator terminal wires of a large DC motor, comprising a T-shaped positioning steel plate and at least two support screws, wherein: The T-shaped positioning steel plate has a longitudinal groove at one end and a transverse groove at the other end. All the support screws are respectively inserted into the longitudinal and transverse slots of the T-shaped positioning steel plate. The T-shaped positioning steel plate moves up and down along the axial direction of the support screws to adjust the spatial position of the T-shaped positioning steel plate according to the target assembly height of the stator end line, and is locked and fixed by the locking nut. The T-shaped positioning steel plate slides horizontally along the extension direction of the longitudinal or transverse slot to adjust the horizontal support position of the T-shaped positioning steel plate relative to the support screws. Each support screw is equipped with a magnetic base at its bottom, which is used to detachably attach to the end face of the stator core.

[0011] The aforementioned adjustable support fixture for assembling stator terminal lines of a large DC motor comprises three support screws, two of which are inserted into the transverse long slots of the T-shaped positioning steel plate, and the other support screw is inserted into the longitudinal long slot of the T-shaped positioning steel plate, forming a three-point support.

[0012] The aforementioned adjustable support fixture for assembling stator end lines of a large DC motor includes an upper locking nut and a lower locking nut respectively disposed above and below the T-shaped positioning steel plate. By coordinating the upper locking nut and the lower locking nut, the T-shaped positioning steel plate is fixed at any axial height position of the support screw.

[0013] The adjustable support fixture for assembling stator end lines of a large DC motor, as described above, has a longitudinal slot and a transverse slot with a width of 12mm to 15mm.

[0014] The aforementioned adjustable support fixture for assembling stator terminal wires of a large DC motor, wherein the magnetic base is replaced by a snap-on base or a bolt-fixed base.

[0015] In the aforementioned adjustable support fixture for assembling stator terminal lines of a large DC motor, the T-shaped positioning steel plate is replaced with a rectangular steel plate or a cross-shaped steel plate.

[0016] The aforementioned adjustable support fixture for assembling stator terminal wires of a large DC motor, wherein the magnetic base is a circular or square strong magnet.

[0017] The aforementioned adjustable support fixture for assembling stator end wires of a large DC motor, wherein the length of the support screw is matched with the stator height.

[0018] The aforementioned adjustable support fixture for assembling stator end wires of a large DC motor has a support screw with a length of 100 mm to 180 mm.

[0019] The adjustable support fixture for assembling stator terminal wires of a large DC motor of the present invention has the following advantages compared with the prior art: (1) Height is steplessly adjustable and no pads are needed: The support height can be precisely and steplessly adjusted by moving the nut up and down on the screw. One set of tooling can be adapted to various types of motors, completely eliminating the dependence on a large number of pads.

[0020] (2) Easy disassembly and improved efficiency: After welding, the steel plate and screw can be easily removed by simply loosening the locking nut. There is no problem of compaction and jamming caused by high temperature and pressure during welding, which greatly improves the disassembly efficiency.

[0021] (3) Eliminate potential quality hazards and improve safety: The integrated tooling structure is adopted without any independent small pads, which fundamentally eliminates the risk of parts falling into the stator gap and ensures that no foreign objects are left inside the motor.

[0022] (4) Easy to check and controllable quality: The entire tooling consists of only a T-shaped positioning steel plate, three support screws and matching nuts. The number of parts is very small, making it convenient to check before and after operation and effectively preventing tools from being missed.

[0023] (5) Stable and reliable positioning: The bottom is fixed by strong magnetic adsorption, which keeps the tooling stable, without deviation or tilting during the entire assembly and welding process, thus ensuring the assembly accuracy and welding quality of the conductive busbar.

[0024] (6) High versatility: Applicable to the assembly of stator end conductor busbars of most large DC motors. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the adjustable support fixture for assembling the stator terminal wires of a large DC motor according to the present invention. Figure 2 This is a schematic diagram showing the adjustable support tooling for assembling the stator terminal wires of a large DC motor according to the present invention in use on the stator. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, its specific embodiments will be described in detail below with reference to the accompanying drawings.

[0027] Example 1: Please see Figure 1 and Figure 2 According to an embodiment of the present invention, an adjustable support fixture for assembling stator terminal wires of a large DC motor includes a T-shaped positioning steel plate 4 and at least two support screws 2.

[0028] The T-shaped positioning steel plate 5 is made of Q235 steel plate with a thickness of 7mm. One end of the T-shaped positioning steel plate 4 has a longitudinal long groove 41, and the other end has a transverse long groove 42; the width of the longitudinal and transverse long grooves is 12mm to 15mm. In this embodiment, the width of the longitudinal and transverse long grooves is 13mm.

[0029] All the support screws 2 are respectively inserted into the longitudinal slots 41 and transverse slots 42 of the T-shaped positioning steel plate 4. For example, the number of support screws 2 can be two, three, or four. In this embodiment, three support screws 2 are selected. Two of the support screws 2 are inserted into the transverse slots 42 of the T-shaped positioning steel plate, and the other support screw 2 is inserted into the longitudinal slots 41 of the T-shaped positioning steel plate, forming a three-point stable support.

[0030] The diameter of the support screw 2 is 12mm, and its length is matched according to the stator height, usually 100mm-180mm. The T-shaped positioning steel plate 4 can move up and down along the axial direction of the support screw 2 to adjust the spatial position of the T-shaped positioning steel plate 4 according to the target assembly height of the stator end line, and is locked and fixed by the lock nut 3.

[0031] Specifically, the locking nut 3 includes an upper locking nut 31 and a lower locking nut 32 respectively disposed above and below the T-shaped positioning steel plate. Through the coordinated locking of the upper locking nut 31 and the lower locking nut 32, the T-shaped positioning steel plate 4 is fixed at any axial height position of the support screw 2.

[0032] The T-shaped positioning steel plate 5 provides a support plane for the end wire (conductive busbar), which can achieve adjustable front-to-back / left-to-right position. Specifically, the T-shaped positioning steel plate 4 can slide horizontally along the extension direction of the longitudinal groove 41 or the transverse groove 42 to adjust the horizontal support position of the T-shaped positioning steel plate 4 relative to the support screw 2; Each supporting screw 2 is equipped with a magnetic base 1 at its bottom. The magnetic base 1 is a round or square strong magnet. The magnetic base 1 is used to detachably attach to the end face of the stator core, ensuring stable positioning of the tooling without deviation or tilting. Example 2: An adjustable support fixture for assembling stator terminal wires of a large DC motor is disclosed. In embodiment 1, the magnetic base 1 can be replaced with a snap-on base or a bolt-fixed base. The T-shaped positioning steel plate 4 can be replaced with a rectangular steel plate or a cross-shaped steel plate. The number of support screws 2 can be two or four to meet different support stability requirements.

[0033] Please see Figure 2 The adjustable support fixture for assembling stator terminal wires of a large DC motor of the present invention first places three support screws 2 with magnetic bases 1 at predetermined positions on the stator core end face 100, and uses the magnetic force of the magnetic bases 1 to attract and fix them; then, a T-shaped positioning steel plate 4 is inserted into the three support screws 2 through its long groove. According to the target height required by the conductor busbar, the T-shaped positioning steel plate 4 is moved up and down along the support screws 2. At the same time, the steel plate can also be moved along the long groove to adjust the horizontal position; after the position is accurately adjusted, the upper and lower locking nuts 3 on each support screw 2 are tightened to lock the height and horizontal position of the steel plate; finally, the stator terminal wire 101 is placed on the T-shaped positioning steel plate 4 for subsequent positioning, assembly and welding operations.

[0034] Once all the work is completed, simply loosen the lower locking nut 3 to easily remove the T-shaped positioning steel plate 4 and screw 2 from the stator as a whole.

[0035] In summary, the adjustable support fixture for assembling stator terminals of large DC motors of the present invention achieves stepless height adjustment through the cooperation of screws and double nuts, eliminating the need for pads. One set of fixtures can be adapted to multiple motor models. The integrated structure has no loose small parts, making disassembly convenient and eliminating the risk of parts falling off, and facilitating inventory. The bottom magnetic fixation ensures stable support, effectively improving assembly accuracy and work efficiency.

[0036] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. An adjustable support fixture for assembling stator terminal wires of a large DC motor, characterized in that, Includes a T-shaped positioning steel plate and at least two supporting bolts, wherein: The T-shaped positioning steel plate has a longitudinal groove at one end and a transverse groove at the other end. All the support screws are respectively inserted into the longitudinal and transverse slots of the T-shaped positioning steel plate. The T-shaped positioning steel plate moves up and down along the axial direction of the support screws to adjust the spatial position of the T-shaped positioning steel plate according to the target assembly height of the stator end line, and is locked and fixed by the locking nut. The T-shaped positioning steel plate slides horizontally along the extension direction of the longitudinal or transverse slot to adjust the horizontal support position of the T-shaped positioning steel plate relative to the support screws. Each support screw is equipped with a magnetic base at its bottom, which is used to detachably attach to the end face of the stator core.

2. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The number of support screws is three, with two support screws passing through the transverse long groove of the T-shaped positioning steel plate and the other support screw passing through the longitudinal long groove of the T-shaped positioning steel plate, forming a three-point support.

3. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The locking nut includes an upper locking nut and a lower locking nut respectively disposed above and below the T-shaped positioning steel plate. By the coordinated locking of the upper locking nut and the lower locking nut, the T-shaped positioning steel plate is fixed at any axial height position of the support screw.

4. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The width of the longitudinal and transverse grooves is 12mm to 15mm.

5. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The magnetic base is replaced with a snap-on base or a bolt-fixed base.

6. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The T-shaped positioning steel plate is replaced with a rectangular steel plate or a cross-shaped steel plate.

7. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The magnetic base is a round or square strong magnet.

8. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The length of the support screw is matched with the stator height.

9. The adjustable support fixture for assembling stator terminal wires of a large DC motor according to claim 1, characterized in that, The length of the support screw is 100 mm to 180 mm.

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