A tooling for square exciter stator dip paint process

Abstract

This utility model discloses a tooling for the impregnation process of a square exciter stator, including a hoisting tool and an impregnation fixture. The hoisting tool includes a main lifting beam, two eye bolts, and several stops. The main lifting beam includes a rectangular tube and a pair of support plates symmetrically arranged on both sides of the top of the rectangular tube. A sealing plate is fixed to each end of the main lifting beam. The inner surfaces of the pair of support plates are machined into bevels and fixed to the top sides of the rectangular tube. The two eye bolts are fixed to the outer surfaces of the sealing plates at both ends of the main lifting beam. Several stops are fixed to the top surface of the rectangular tube by bolts with a spacing adapted to the thickness of the exciter stator. The impregnation fixture includes an outer frame, two stator support beams fixed to the bottom of the outer frame, a lead wire fixing bracket fixed to the top of the outer frame, and four hooks. This utility model not only solves the problems of laborious and risky hoisting, but also the problems of long dripping time and easy paint accumulation during impregnation.

Description

Technical Field

[0001] This utility model relates to a tooling for the impregnation process of a square exciter stator. Background Technology

[0002] After assembly, the exciter stator requires insulation treatment, which involves first transferring it to an impregnation device to be immersed in insulating varnish, followed by curing of the varnish. During this process, the exciter stator needs to be transferred from the assembly workbench to the impregnation fixture using specialized tools.

[0003] Currently, the methods for hoisting exciter stators are either to directly tie them with slings and transfer them to a varnishing fixture, or to string multiple small exciter stators together with steel pipes and then hoist them into the varnishing fixture. The current varnishing fixture is a cage structure; multiple exciter stators are placed inside the cage, lifted by a crane, and then placed in a varnishing bath for varnishing and dripping. The advantage of this method is that it is applicable to most products and is simple to maintain.

[0004] However, this approach has the following problems:

[0005] 1. The time required for binding and unbinding the slings is relatively long, and only one exciter stator can be hoisted at a time, which consumes a lot of time and is inefficient;

[0006] 2. When using steel pipes to hoist multiple exciter stators, the multiple exciter stators are prone to colliding with each other; at the same time, the contact area between the steel pipe and the exciter stator is extremely small, which can easily cause the exciter stator to slip and damage the slot wedges of the exciter stator.

[0007] 3. Direct hoisting and hoisting with steel pipes make it difficult to control the attitude of the exciter stator in the air. During the process of placing it into the varnishing fixture, multiple exciter stators are prone to collisions. During the varnishing process, the square iron core exciter stator is prone to varnish accumulation at the bottom. Utility Model Content

[0008] The purpose of this utility model is to overcome the defects of the prior art and provide a tooling for the impregnation process of square exciter stators. It not only solves the problem of laborious and bumpy hoisting, but also solves the problem of long dripping time and easy paint accumulation during impregnation.

[0009] The purpose of this utility model is achieved as follows: a tooling for the impregnation process of a square exciter stator, comprising a hoisting tool and an impregnation tooling; wherein,

[0010] The hoisting tool includes a main lifting beam, two eye bolts, and several stops. The main lifting beam comprises a rectangular tube and a pair of symmetrical support plates positioned on either side of the top of the rectangular tube. The length of each support plate is the same as the length of the rectangular tube, and each support plate is formed by bending a flat plate into an arc-shaped cross-section. The inner surfaces of the pair of support plates are machined into bevels and fixed to the top surfaces of the rectangular tube, such that the angle between the pair of support plates and the top surface of the rectangular tube is 15–20°, the line connecting the top surfaces of the pair of support plates forms a convex arc, and the angle between the outer surfaces of the pair of support plates is 45–60°. The two eye bolts are fixed to the center of the outer surfaces of the end plates at both ends of the main lifting beam, with the eye bolt forming an angle of 15–18° with the vertical centerline of the rectangular tube. Several stops are fixed to the top surface of the rectangular tube by bolts with a spacing adapted to the thickness of the exciter stator.

[0011] The impregnation fixture includes an outer frame, two stator support beams, a lead wire fixing bracket, and four hooks. The outer frame is rectangular with a length less than or equal to the length of the main lifting beam of the hoisting tool, and its width is greater than the length of the diagonal of the exciter stator core. The outer frame includes a rectangular base frame composed of two bottom crossbeams and two bottom longitudinal beams, four columns connected to the four corners of the base frame, two top crossbeams connecting the tops of the four columns, and two middle longitudinal beams connecting the middle sections of the four columns. Two stator support beams are spaced across the middle sections of the two bottom longitudinal beams of the outer frame. The lead wire fixing bracket is inverted U-shape and fixed to the top surface of one of the top crossbeams of the outer frame. The four hooks are fixed to the outer top surfaces of the four columns of the outer frame.

[0012] The aforementioned tooling for the impregnation process of a square exciter stator includes a lifting tool whose stop is a rectangular block made of nylon.

[0013] The aforementioned fixture for the stator impregnation process of a square exciter is wherein the bottom crossbeam, bottom longitudinal beam, column, top crossbeam, and middle longitudinal beam of the impregnation fixture are all made of angle iron; the stator support beam is made of channel steel, and the two stator support beams are arranged back to back; the lead wire fixing frame and hook are made of round steel.

[0014] The aforementioned fixture for the impregnation process of a square exciter stator includes an outer frame that further comprises two central crossbeams connected between the middle sections of four columns, and the central crossbeams are made of round steel.

[0015] The tooling of this utility model for the stator impregnation process of a square exciter is characterized by the following:

[0016] 1. The tooling structure is simple, the manufacturing process is simple, and the long-term use, maintenance and replacement costs are low.

[0017] 2. The tooling is easy to use, the training of operators is simple and easy to learn, and it can be put into use directly.

[0018] 3. The hoisting tool can lift multiple exciter stators at once, significantly improving efficiency and reducing labor costs;

[0019] 4. The hoisting tool can control the attitude of the exciter stator in the air, reduce the risk of bumps and knocks when placing it into the impregnation fixture, and reduce quality costs;

[0020] 5. The varnish-dipping fixture allows the exciter stator to be dipped in varnish in a fixed posture and can fix the lead wires of the exciter stator to the lead wire fixing bracket to prevent the lead wires from falling into the varnish. At the same time, the varnish dripping in a specific posture can effectively reduce the phenomenon of sag and varnish accumulation, and also reduce the dripping time. Attached Figure Description

[0021] Figure 1 This is a perspective view of the tooling used in the impregnation process of a square exciter stator according to this utility model;

[0022] Figure 2a This is a front view of the hoisting tool of this utility model;

[0023] Figure 2b This is a top view of the hoisting tool of this utility model;

[0024] Figure 2c yes Figure 2b AA direction view;

[0025] Figure 3a This is a front view of the impregnation fixture of this utility model;

[0026] Figure 3b This is a side view of the impregnation fixture of this utility model;

[0027] Figure 3c This is a top view of the impregnation fixture of this utility model;

[0028] Figure 4 This is a front view of the tooling of this utility model in its first state of use;

[0029] Figure 5 This is a front view of the tooling of this utility model in its second state of use;

[0030] Figure 6 This is a perspective view of the tooling of this utility model in its second state of use. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Please see Figures 1 to 3c The tooling of this utility model for the impregnation process of square exciter stator includes a hoisting tool 1 and an impregnation tool 2.

[0033] Lifting tool 1 includes a main lifting beam 1A, two eye bolts 1B, and four stops 1C; wherein,

[0034] The main lifting beam 1A includes a 40mm×25mm rectangular tube 10 and a pair of support plates 12 symmetrically arranged on the top two sides of the rectangular tube 10. A sealing plate 11 is fixed at each end of the main lifting beam 1A. The length of the support plate 12 is the same as the length of the rectangular tube 10, and the support plate 12 is made of a 5mm thick flat plate bent into an arc shape. The inner surfaces of the pair of support plates 12 are processed into bevels and fixed to the top two sides of the rectangular tube 10 one by one, so that the included angle between the pair of support plates 12 and the top surface of the rectangular tube 10 is α=15~20°, the line connecting the top surfaces of the pair of support plates 12 is a convex arc surface, and the included angle between the outer surfaces of the pair of support plates 12 is β=45~60°.

[0035] Two eye bolts 1B are fixed one-to-one to the center of the outer side of the sealing plate 11 at both ends of the main lifting beam 1A. The angle between the eye of each eye bolt 1B and the vertical center line of the rectangular tube 10 is θ = 15 to 18°.

[0036] Each of the four stops 1C is fixed to the top surface of the rectangular tube 10 by bolts with a spacing that matches the thickness of the exciter stator 300; the stops 1C are rectangular blocks and made of nylon.

[0037] The impregnation fixture 2 includes an outer frame 2A, two stator support beams 2B, a lead wire fixing frame 2C, and four hooks 2D. The outer frame 2A is rectangular in shape, with a length less than or equal to the length of the main lifting beam 1A of the hoisting tool 1. The width of the outer frame 2A is greater than the length of the diagonal of the exciter stator core 30. The outer frame 2A includes a rectangular base frame composed of two bottom crossbeams 21 and two bottom longitudinal beams 22, four columns 23 connected to the four corners of the base frame, two top crossbeams 24 connected between the tops of the four columns 23, two middle longitudinal beams 25 connected between the middle sections of the four columns 23, and two middle crossbeams 26 connected between the middle sections of the four columns 23. The bottom crossbeams 21, bottom longitudinal beams 22, columns 23, top crossbeams 24, and middle longitudinal beams 25 are all made of angle iron; the middle crossbeams 26 are made of round steel.

[0038] Two stator support beams 2B are spaced apart and spanned between the middle of the two bottom longitudinal beams 22 of the outer frame 2A; both stator support beams 2B are made of channel steel and are arranged back to back.

[0039] The lead wire fixing bracket 2C is inverted U-shaped and fixed to the top surface of a top crossbeam 24 of the outer frame 2A; both the lead wire fixing bracket 2C and the hook 2D are made of round steel.

[0040] The four hooks 2D are fixed one-to-one on the top outer surface of the four uprights 23 of the outer frame 2A.

[0041] Please see again Figures 4 to 6 The tooling of this utility model for the impregnation process of square exciter stators is used as follows: First, the main lifting beam 1A of the hoisting tool 1 is inserted into the inner holes of three exciter stators 300 that are erected at intervals on the worktable, so that each exciter stator 300 is sandwiched between two adjacent stops 1C, and the vertical center line of the rectangular tube 10 of the main lifting beam 1A is deviated from the vertical center line of the exciter stator 300, and a pair of support plates 12 are attached to the inner diameter surface of the stator core 30 (see...). Figure 4 When the crane lifts the three exciter stators 300 via the hoisting rope and the two eye bolts 1B, the three exciter stators 300, due to gravity, change from their original flat and upright position on the worktable to an approximately rhomboid shape (see...). Figure 5 and Figure 6 This facilitates the placement of the three exciter stators 300 into the outer frame 2A of the impregnation fixture 2. The main lifting beam 1A is then positioned parallel to and between the two top crossbeams 24 of the impregnation fixture 2 to hoist the three exciter stators 300 into the outer frame 2A of the impregnation fixture 2 until the three exciter stators 300 are blocked by the two stator support beams 2B (see...). Figure 1 Then, pull out the hoisting tool 1 and tie all the lead wires of the three exciter stators 300 to the lead wire fixing frame 2C. Finally, use the crane hoist and the four hooks 2D of the varnishing fixture 2 to put the varnishing fixture 2 into the varnishing tank. After the varnishing is completed, use the crane hoist to lift the varnishing fixture 2 out of the varnishing tank and drip the varnish. Excess insulating varnish drips along the bottom corner of the outer edge of the stator core 30 to avoid varnish accumulation.

[0042] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A tooling for the impregnation process of a square exciter stator, comprising a hoisting tool and an impregnation fixture; characterized in that, The hoisting tool includes a main lifting beam, two eye bolts, and several stops. The main lifting beam comprises a rectangular tube and a pair of symmetrical support plates positioned on either side of the top of the rectangular tube. The length of each support plate is the same as the length of the rectangular tube, and each support plate is formed by bending a flat plate into an arc-shaped cross-section. The inner surfaces of the pair of support plates are machined into bevels and fixed to the top surfaces of the rectangular tube, such that the angle between the pair of support plates and the top surface of the rectangular tube is 15–20°, the line connecting the top surfaces of the pair of support plates forms a convex arc, and the angle between the outer surfaces of the pair of support plates is 45–60°. The two eye bolts are fixed to the center of the outer surfaces of the end plates at both ends of the main lifting beam, with the eye bolt forming an angle of 15–18° with the vertical centerline of the rectangular tube. Several stops are fixed to the top surface of the rectangular tube by bolts with a spacing adapted to the thickness of the exciter stator. The impregnation fixture includes an outer frame, two stator support beams, a lead wire fixing bracket, and four hooks. The outer frame is rectangular with a length less than or equal to the length of the main lifting beam of the hoisting tool, and its width is greater than the length of the diagonal of the exciter stator core. The outer frame includes a rectangular base frame composed of two bottom crossbeams and two bottom longitudinal beams, four columns connected to the four corners of the base frame, two top crossbeams connecting the tops of the four columns, and two middle longitudinal beams connecting the middle sections of the four columns. Two stator support beams are spaced across the middle sections of the two bottom longitudinal beams of the outer frame. The lead wire fixing bracket is inverted U-shape and fixed to the top surface of one of the top crossbeams of the outer frame. The four hooks are fixed to the outer top surfaces of the four columns of the outer frame.

2. The tooling for the impregnation process of a square exciter stator according to claim 1, characterized in that, The stop block of the hoisting tool is a rectangular block made of nylon.

3. The tooling for the impregnation process of a square exciter stator according to claim 1, characterized in that, The bottom crossbeam, bottom longitudinal beam, column, top crossbeam, and middle longitudinal beam of the impregnation fixture are all made of angle iron; the stator support beam is made of channel steel, and the two stator support beams are arranged back to back; the lead wire fixing frame and hook are made of round steel.

4. The tooling for the impregnation process of a square exciter stator according to claim 3, characterized in that, The outer frame of the impregnation fixture also includes two central crossbeams connected between the middle of the four columns, and the central crossbeams are made of round steel.

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