A modular device for the turnover and storage of rotor components of an electric motor

Abstract

The present invention discloses a modular device for the turnover and storage of the rotor assembly of a motor, including a plurality of supporting columns and a plurality of rotor assembly turnover tools, wherein the rotor assembly turnover tool is provided with a turnover base plate and a plurality of rotor assembly chambers, wherein the rotor assembly chamber is a hollow columnar structure with one end open, wherein the rotor assembly chamber is extendedly arranged at the lower position of the turnover base plate, wherein the opening of the rotor assembly chamber is arranged on the upper surface of the turnover base plate, and the rotor assembly chamber is used for the turnover and storage of the rotor assembly. The present invention effectively ensures the qualified rate in the turnover and storage of finished and semi-finished rotor assemblies, reduces the risk of motor operation, improves the motor production efficiency, reduces the motor production cost, improves the stability and consistency of the motor, and improves the life and quality of the motor batch.

Description

Technical Field

[0001] The present invention relates to a modular device, in particular to a modular device for the circulation and storage of a rotor assembly of a motor. Background Art

[0002] After the motor is powered on, the rotor assembly winding cuts the stator rotating magnetic field to generate induced electromotive force and current, forming an electromagnetic torque that rotates the motor through the commutator. The current flows through the rotor assembly commutator through the graphite brush and the rotor assembly winding. Since the silver-copper alloy sheet of the commutator and the graphite brushes are subjected to high-speed friction during the operation of the motor, the graphite brushes are worn in the high-speed friction. When the motor graphite brushes are completely worn out, the motor life ends. In order to effectively reduce the wear of graphite brushes, it is necessary to perform precision turning on the outer cylindrical surface of the commutator silver-copper alloy sheet to ensure the roundness, runout and roughness indicators of the outer cylindrical surface of the commutator silver-copper alloy sheet. The turning depth is also strictly controlled during precision turning of the outer cylindrical surface of the commutator silver-copper alloy sheet to avoid bruises and contamination oxidation on the surface of the commutator silver-copper alloy sheet due to touch, to avoid reduction of the conductive performance of the surface of the commutator silver-copper alloy sheet due to bruises and contamination oxidation, and to avoid accelerated wear of the motor graphite brushes due to roundness, runout and roughness indicators, and even sparks causing serious shortening of the effective life of the motor. However, since the commutator silver-copper alloy sheet is composed of multiple sheets separated from each other, surface bruises in extreme cases may even cause adjacent sheets of the commutator silver-copper alloy sheet to contact, resulting in short circuit and burning of the motor. Therefore, it is strictly forbidden to touch the silver-copper alloy surface of the commutator of the rotor assembly before and during the turnover process after precision turning and when the rotor assembly is stored. In addition, the winding of the rotor assembly is made of enameled wire wound in multiple layers in the rotor core and connected to the commutator of the rotor assembly. After winding, the windings at both ends of the rotor assembly core are exposed. In order to avoid the enameled wire being broken due to scratches on the surface of the rotor winding and the motor being burned due to short circuits caused by scratches on the enameled wire, the rotor winding must not be touched during the turnover and storage of the rotor assembly after the rotor winding process is completed. When the commutator of the rotor assembly is running at high speed, the silver-copper alloy sheet on its surface and the graphite brush of the motor are in high-speed wear and conductive contact. The life of the motor ends when the graphite brush of the motor is completely worn. Therefore, a slight scratch on the surface of the silver-copper alloy sheet of the commutator of the rotor assembly may greatly increase the wear of the graphite brush of the motor when it is running at high speed, seriously shortening the effective life of the motor, and posing serious hidden dangers.

[0003] At present, two solutions are usually adopted. The first solution is to drill holes in the wooden board and place the rotor assembly shaft in the hole for circulation. However, since the center of gravity of the rotor assembly is on the commutator and the iron core in the middle of the rotor assembly, it is very easy to cause the rotor assembly to fall during the circulation of the rotor assembly, causing damage to the commutator and the winding of the rotor assembly. In addition, this solution can only place a single layer during the turnover and storage process, and cannot place multiple layers, which greatly consumes the floor space. The second solution is to use grids in large turnover boxes, which does avoid damage to the rotor assembly. However, the large turnover box is too large, which also expands the floor space. In addition, due to the use of internal grids and turnover boxes, the rotor assembly is not easy to place and take out, which affects production efficiency. The sealing state of the bottom of the turnover box plus the grid also causes impurities to accumulate easily in the turnover box and is difficult to clean. The turnover box plus grid solution is too large in size and weight, which also leads to excessively high costs for the turnover solution.

[0004] There is an urgent need to find a new technical solution to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects in the prior art. A modular device for the turnover and storage of the rotor assembly of the motor is provided, which effectively ensures the qualified rate of the finished and semi-finished rotor assemblies in the turnover and storage, greatly and effectively reduces the risk of motor operation, greatly improves the motor production efficiency, reduces the motor production cost, improves the stability and consistency of the series-excited high-efficiency motor, and improves the life and quality of the motor in batches.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a modular device for the turnover and storage of the rotor assembly of an electric motor, which is characterized in that the modular device for the turnover and storage of the rotor assembly of an electric motor comprises a plurality of supporting columns and a plurality of rotor assembly turnover tools, the rotor assembly turnover tool is provided with a turnover base plate and a plurality of rotor assembly chambers, the rotor assembly chamber is a hollow columnar structure with one end open, the rotor assembly chamber is extendedly arranged at the lower position of the turnover base plate, the opening of the rotor assembly chamber is arranged on the upper surface of the turnover base plate, and the rotor assembly chamber is used for the turnover and storage of the rotor assembly; the lower end of the supporting column is insertedly arranged in the rotor assembly chamber at the four corners of one of the rotor assembly turnover tools, and the upper end of the supporting column is sleeved on the rotor at the four corners of another of the rotor assembly turnover tools In the assembly chamber, the support column and the rotor assembly turnover tool are connected layer by layer from bottom to top; the support column includes a column, and the column includes a first step and a second step, the first step is arranged at the middle and lower part of the side of the column, and the second step is arranged at the upper part of the side of the column, and the second step is arranged at the center of the top of the column. The bottom surface of the rotor assembly chamber is provided with a through hole, and the through hole is a cylindrical protrusion extending downward, and the cylindrical protrusion is used for placing the rotating shaft of the rotor assembly, which is placed in the circular positioning hole of the support column, and the circular positioning hole of the support column and the cylindrical protrusion at the bottom of the rotor assembly turnover tool are clearance-matched, so as to facilitate the removal of the rotor assembly turnover tool at each layer.

[0008] Preferably, the outer diameter of the lower end of the support column is 0.1-0.2 mm smaller than the inner diameter of the bottom of the rotor assembly chamber, and the inner diameter of the upper end of the support column is 0.1-0.2 mm larger than the outer diameter of the bottom of the rotor assembly chamber.

[0009] Preferably, the first step is arranged to be an inclined surface at one end close to the column.

[0010] Preferably, a through hole is provided on the bottom surface of the rotor assembly chamber, and the through hole is a cylindrical protrusion extending downward.

[0011] Preferably, the rotor assembly turnover tool further comprises reinforcing ribs, wherein the reinforcing ribs are connected to the outer side wall of the rotor assembly chamber.

[0012] Preferably, the rotor assembly includes a rotating shaft, a commutator, a silver-copper alloy sheet of the commutator, an upper end plate, a rotor core, a lower end plate and an enameled wire, the rotating shaft is sequentially passed through the commutator, the upper end plate, the rotor core and the lower end plate, the silver-copper alloy sheet of the commutator covers the outside of the commutator, and the enameled wire is arranged on the rotor core.

[0013] Preferably, the support column and the rotor assembly turnover tool are made of plastic.

[0014] The positive and progressive effects of the present invention are:

[0015] The present invention realizes the integration of the rotor assembly of the existing motor into modular placement that can be arbitrarily combined during workshop production turnover and warehouse storage. The size is compact, the occupied area and volume are effectively reduced, and the shape is simple and beautiful. As is known to all, the motor rotor assembly rotates at high speed in the motor. The present invention prevents the key parts of the finished and semi-finished rotor assembly from being touched during turnover and storage. In addition, since the support column and the rotor assembly turnover tool are made of plastic, the finished and semi-finished rotor assembly will not be damaged when contacting other parts of the finished and semi-finished rotor assembly, and the support column and the rotor assembly turnover tool made of plastic are light in weight and have good toughness. The reverse side of the rotor assembly turnover tool and the bottom surface of the rotor assembly chamber has a reinforcing rib structure evenly distributed horizontally and vertically, which greatly increases the strength structure of the rotor assembly turnover tool, effectively reduces the risk of motor operation, greatly improves the stability and consistency of the series-excited high-efficiency motor, improves the life and quality of the batch of high-efficiency motors, and makes the rotor assembly turnover tool and the support column reusable, improves the production qualification rate of the finished and semi-finished rotor assembly, greatly improves the motor production efficiency, and effectively reduces the motor production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along line A-A'.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotor assembly turnover tool according to the preferred embodiment of the present invention.

[0020] Figure 5 for Figure 4 Schematic diagram of the top view structure.

[0021] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along line BB'.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of a column according to a preferred embodiment of the present invention.

[0023] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotor assembly of the preferred embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0026] See also Figures 1 to 5 The present invention provides a modular device for the turnover and storage of the rotor assembly of an electric motor, comprising a support column 1 and a plurality of rotor assembly turnover tools 2. The rotor assembly turnover tools 2 comprise a turnover base plate 7 and a plurality of rotor assembly chambers 8. The plurality of rotor assembly chambers 8 are evenly distributed on the upper surface of the turnover base plate 7. The lower end of the support column 1 is inserted into the rotor assembly chambers 8 at the four corners of the turnover base plate 7, and the rotor assembly 3 is placed in the rotor assembly chambers 8. When the rotor assembly chambers 8 are full, the rotor assembly turnover tools 2 of the upper layer are fixed to the support column 1 through the bottom of the turnover base plate 7, so that the support column 1 and the rotor assembly turnover tools 2 are sequentially increased and stacked into a columnar shape. The support column 1 can be a circular step-shaped structure. The rotor assembly turnover tool 2 can be a rectangular structure with rounded edges. Please refer to Figure 7 and Figure 8 The support column 1 includes a column 10, and the column 10 includes a first step 5, a second step 6 and a center positioning hole 4. The first step 5 is arranged at the middle and lower part of the side of the column 10, the second step 6 is arranged at the upper part of the side of the column, and the center positioning hole 4 is arranged at the top center of the column. The outer diameter of the upper plane of the second step 6 is the same as the outer diameter of the bottom reverse side of the rotor assembly chamber 8 of the rotor assembly turnover tool 2, and the center of the bottom plane of the first step 5 contains a circular center positioning hole 4. The rotor assembly chamber 8 is provided with a through hole inside, and the through hole is provided with a cylindrical protrusion 19 extending downward. The through hole is a circular through hole, and the circular through hole is used when the rotor assembly 3 is placed in the rotor assembly chamber 8. The cylindrical protrusion 19 is used to place the rotating shaft 12, which is placed in the circular positioning hole of the support column. The circular positioning hole of the support column and the cylindrical protrusion 19 at the bottom of the rotor assembly turnover tool are clearance-matched, which is convenient for taking out each layer of the rotor assembly turnover tool 2.

[0027] Preferably, the outer diameter of the lower end of the support column 1 is 0.1-0.2 mm smaller than the outer diameter of the bottom of the rotor assembly chamber 8, and the inner diameter of the upper end of the support column 1 is 0.1-0.2 mm larger than the outer diameter of the bottom of the rotor assembly chamber 8.

[0028] Preferably, an end position 21 of the first step 5 close to the column 10 is set as an inclined surface to facilitate pulling out the supporting column 1.

[0029] Preferably, the rotor assembly chamber is provided with a first step surface 11 and a second step surface 20 , the second step surface 20 is located close to the opening, and the first step surface 11 is provided at a lower portion of the second step surface 20 .

[0030] Preferably, see Figure 6 The rotor assembly turnover tool 2 also includes reinforcing ribs 9, which are connected to the outer side wall of the rotor assembly chamber 8.

[0031] Preferably, see Fig. 9 The rotor assembly 3 includes a rotating shaft 12, a commutator 13, a silver-copper alloy sheet 14 of the commutator, an upper end plate 15, a rotor core 16, a lower end plate 17 and an enameled wire 18. The commutator 13, the upper end plate 15, the rotor core 16 and the lower end plate 17 are sequentially mounted on the rotating shaft 12, that is, the rotating shaft 12 is sequentially penetrated through the commutator 13, the upper end plate 15, the rotor core 16 and the lower end plate 17, the silver-copper alloy sheet 14 of the commutator 13 covers the outer side of the commutator 13, and the enameled wire 18 is mounted on the rotor core 16. A rotor assembly turnover box may also be provided on the periphery of the rotor assembly turnover tool 2.

[0032] The support column 1 and the rotor assembly turnover tool 2 can be made of plastic.

[0033] When the support column 1 of the present invention is inserted into the rotor assembly chamber 8, it will be firmly stuck and will not shake, preventing it from collapsing due to shaking when stacked later. When disassembling, because the bottom of the first step 5 is an angled angle, it can be disassembled smoothly when disassembling outwards, making it easy to pull out the support column 1 without getting stuck. Figure 6 As shown, the rotor assembly chamber 8 has a two-stage stepped structure to accommodate the upper and lower parts of the rotor assembly 3 with different outer diameters. For example, when the rotor assembly 3 is placed in the rotor assembly chamber 8, the bottom surface of the stepped structure of the rotor assembly chamber 8 is used to place the part of the rotor assembly 3 with an outer diameter less than 33 mm, and the commutator 13 of the rotor assembly 3 is placed on the plastic plane on the bottom surface of the rotor assembly chamber 8. The first step surface 11 of the rotor assembly chamber 8 accommodates the part of the rotor assembly 3 with an outer diameter less than 40 mm and greater than 33 mm, and the plane of the rotor assembly chamber 8 is used to place the part of the rotor assembly 3 with an outer diameter greater than 39 mm.

[0034] The present invention has been described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Therefore, some details in the embodiments shall not constitute a limitation of the present invention, and the present invention shall be protected by the scope defined by the attached claims.

Claims

1. A modular device for the turnover and storage of a rotor assembly of an electric motor, characterized in that: The modular device for the turnover and storage of the rotor assembly of the motor comprises a plurality of supporting columns and a plurality of rotor assembly turnover tools, wherein the rotor assembly turnover tool is provided with a turnover base plate and a plurality of rotor assembly chambers, wherein the rotor assembly chamber is a hollow columnar structure with one end open, wherein the rotor assembly chamber is extendedly arranged at the lower position of the turnover base plate, wherein the opening of the rotor assembly chamber is arranged on the upper surface of the turnover base plate, and wherein the rotor assembly chamber is used for the turnover and storage of the rotor assembly; wherein the lower end of the supporting column is insertedly arranged in the rotor assembly chamber at one of the four corners of the rotor assembly turnover tool; wherein the supporting column comprises a column body, wherein the column body It includes a first step and a second step, the first step is arranged at the lower middle part of the side of the cylinder, the second step is arranged at the upper part of the side of the cylinder, the second step is arranged with a center positioning hole, and the center positioning hole is arranged at the top center of the cylinder; the bottom surface of the rotor assembly chamber is provided with a through hole, and the through hole is provided with a cylindrical protrusion extending downward, and the cylindrical protrusion is used for placing the rotating shaft of the rotor assembly, which is placed in the circular positioning hole of the supporting column, and the circular positioning hole of the supporting column and the cylindrical protrusion at the bottom of the rotor assembly turnover tool are clearance-matched, so as to facilitate the removal of each layer of the rotor assembly turnover tool.

2. The modular device for the turnover and storage of the rotor assembly of the electric machine according to claim 1, characterized in that: The outer diameter of the lower end of the support column is 0.1-0.2 mm smaller than the inner diameter of the bottom of the rotor assembly chamber, and the inner diameter of the upper end of the support column is 0.1-0.2 mm larger than the outer diameter of the bottom of the rotor assembly chamber.

3. The modular device for the turnover and storage of the rotor assembly of the motor according to claim 1, characterized in that: The first step is arranged to be an inclined surface at one end close to the column.

4. The modular device for the turnover and storage of the rotor assembly of the motor according to claim 1, characterized in that: The rotor assembly chamber is provided with a first step surface and a second step surface, the second step surface is located close to the opening portion, and the first step surface is provided at a lower portion of the second step surface.

5. The modular device for the turnover and storage of the rotor assembly of the electric machine according to claim 1, characterized in that: The rotor assembly turnover tool also includes reinforcing ribs connected to the outer side wall of the rotor assembly chamber.

6. The modular device for the turnover and storage of the rotor assembly of the electric machine according to claim 1, characterized in that: The rotor assembly includes a rotating shaft, a commutator, a silver-copper alloy sheet of the commutator, an upper end plate, a rotor core, a lower end plate and an enameled wire. The rotating shaft is sequentially inserted through the commutator, the upper end plate, the rotor core and the lower end plate. The silver-copper alloy sheet of the commutator covers the outer side of the commutator, and the enameled wire is arranged on the rotor core.

7. The modular device for the turnover and storage of the rotor assembly of the electric machine according to claim 1, characterized in that: The support column and the rotor assembly turnover tool are made of plastic.

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