Flywheel motor rotor overlying device and overlying method

Abstract

The invention provides a flywheel motor rotor laminating device and laminating method, and belongs to the technical field of flywheel energy storage, one end of a lining shaft is arranged on a lining tray, an outer cylinder is arranged around the lining shaft, one end of the outer cylinder is arranged on the lining tray, and silicon steel sheets are arranged in a cavity defined by the lining shaft, the lining tray and the outer cylinder; the lining tray is used for lifting the silicon steel sheets and positioning the silicon steel sheets in the axial direction and the radial direction, the lining shaft is similar to a motor rotor shaft, the silicon steel sheets are sleeved on the lining shaft to position the silicon steel sheets, and the structure can stack a plurality of silicon steel sheets according to requirements and is high in precision.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and more specifically, to a flywheel motor rotor stacking device and a stacking method. Background Art

[0002] When a flywheel motor is actually used, in order to reduce eddy current loss, eddy current generation is usually reduced to reduce loss. For example, silicon steel sheets with a smaller thickness (0.1 mm - 0.5 mm) are used on the motor rotor. Different from the structure of the silicon steel sheet iron core plus coil winding of the motor stator, for users, the assembly of the motor rotor usually cannot be carried out separately and needs to be assembled according to a predetermined process in cooperation with the motor shaft on the flywheel. If the silicon steel sheets are installed on the motor shaft one by one, considering that some flywheel shafts are long and have a large diameter, the installation of each silicon steel sheet requires the assistance of a crane, resulting in low efficiency. Secondly, the positioning devices during the installation of each silicon steel sheet are not unified, which greatly affects the assembly accuracy of the silicon steel sheets.

[0003] Therefore, there is an urgent need for a stacking device and a stacking method that can press-fit the entire set of silicon steel sheets on the motor rotor to improve the assembly accuracy and installation efficiency. Summary of the Invention

[0004] In view of this, the present invention proposes a method of lifting and press-fitting the entire set of silicon steel sheets and then installing them on the motor shaft, which greatly improves the assembly efficiency and assembly accuracy of the motor rotor.

[0005] The technical solution of the present invention is realized as follows: A flywheel motor rotor stacking device includes a lining shaft, a lining tray, and an outer cylinder. One end of the lining shaft is arranged on the lining tray, the outer cylinder is arranged around the lining shaft, one end of the outer cylinder is arranged on the lining tray, and silicon steel sheets are arranged in the cavity formed by the lining shaft, the lining tray, and the outer cylinder.

[0006] On the basis of the above technical solution, preferably, the lining tray is circular, the outer diameter of the lining tray is larger than the outer diameter of the silicon steel sheet, and the outer diameter of the lining shaft is smaller than the inner diameter of the silicon steel sheet.

[0007] On the basis of the above technical solution, preferably, the lining shaft is vertically arranged on the lining tray, and the axis of the lining shaft coincides with the axis of the lining tray.

[0008] On the basis of the above technical solution, preferably, stress grooves are arranged on the lining tray, and the stress grooves are arranged around the lining shaft.

[0009] On the basis of the above technical solution, preferably, a cut surface is arranged on one side of the lining shaft, and the cut surface is arranged along the length direction of the lining shaft.

[0010] On the basis of the above technical solutions, preferably, it further includes an end ring, the end ring is arranged on the inner lining tray, and the end ring is arranged around the inner lining shaft.

[0011] On the basis of the above technical solutions, preferably, the outer cylinder body includes a plurality of limiting rods, and the limiting rods are arranged around the silicon steel sheets.

[0012] On the basis of the above technical solutions, preferably, one end of the limiting rod is connected with a positioning rod, the outer diameter of the end ring is larger than that of the inner lining tray, and the positioning rod is arranged on the side of the end ring facing the inner lining tray.

[0013] On the basis of the above technical solutions, preferably, it further includes a clamping ring, the clamping ring is arranged around the outer cylinder body, and the clamping ring is fixedly arranged on the outer cylinder.

[0014] On the basis of the above technical solutions, preferably, a plurality of clamping positioning grooves are arranged on the clamping ring, the clamping positioning grooves are arranged in one-to-one correspondence with the limiting rods, and the limiting rods are arranged in the clamping positioning grooves.

[0015] On the basis of the above technical solutions, preferably, it further includes a top cover, the top cover is arranged at one end of the outer cylinder body away from the inner lining tray, and the top cover and the outer cylinder body are fixedly connected.

[0016] On the basis of the above technical solutions, preferably, it further includes a plurality of ejector pins, one end of the ejector pins sequentially passes through the top cover and the silicon steel sheets, and is fixedly arranged on the end ring.

[0017] On the basis of the above technical solutions, preferably, the end of the ejector pin that cooperates with the end ring is provided with a thread, and the ejector pin and the end ring are connected by a thread.

[0018] On the basis of the above technical solutions, preferably, it further includes a lifting hook, and the lifting hook is arranged on the top cover.

[0019] A method for stacking a flywheel motor rotor includes the following steps: S1. Select a horizontal plane, place the inner lining tray on the horizontal plane, place the end ring on the inner lining tray after passing through the inner lining shaft, stack the silicon steel sheets on the inner lining tray in sequence, and keep the front and back sides and the axial positions of a plurality of silicon steel sheets consistent.

[0020] S2: During the process of placing the silicon steel sheets, every 10 - 30 silicon steel sheets are placed, the ejector pins are passed through the positioning holes on the silicon steel sheets to accurately position the silicon steel sheets, and the silicon steel sheets are compacted.

[0021] S3: A number of limiting rods are arranged evenly around the end ring. The positioning rod is clamped on the side of the end ring close to the inner lining tray. The clamping ring is sleeved on the limiting rods from the end far away from the inner lining tray. Each limiting rod moves along the corresponding clamping and positioning groove, and the limiting rod and the clamping ring are fixedly connected by bolts.

[0022] S4: The ends of a number of limiting rods far away from the inner lining tray cover the top cover. The top cover and each limiting rod are fixed by bolts. The ejector pin passes through the top cover and a number of silicon steel sheets and is fixedly arranged on the end ring. A hook is arranged on the top cover, and the hoisting device is connected to the hook. Lift the inner lining shaft and the inner lining tray of the flywheel motor rotor lamination device to separate, and then sleeve the remaining part on the motor rotor shaft. Remove the top cover, the clamping ring and the limiting rods in sequence to complete the installation of the silicon steel sheets on the motor rotor shaft.

[0023] The flywheel motor rotor lamination device and the lamination method of the present invention have the following beneficial effects compared with the prior art: (1) Use the inner lining tray to hold up the silicon steel sheets, position the silicon steel sheets axially and radially. The inner lining shaft is similar to the motor rotor shaft, and the silicon steel sheets are sleeved on the inner lining shaft to position the silicon steel sheets. This structure can stack a large number of silicon steel sheets according to requirements with relatively high precision; (2) The inner lining shaft is smaller than the silicon steel sheets, which is convenient for sleeving the silicon steel sheets on the inner lining shaft. The outer diameter of the inner lining tray is larger than the outer diameter of the silicon steel sheets, and the inner lining tray can hold up the silicon steel sheets. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is the installation schematic diagram of a flywheel motor rotor lamination device of the present invention; Figure 2 It is the three-dimensional view of a flywheel motor rotor lamination device of the present invention; Figure 3 It is the three-dimensional view of the top cover of the present invention; Figure 4 It is the three-dimensional view of the partial structure of a flywheel motor rotor lamination device of the present invention; Figure 5 For the present invention Figure 4 of the partial structure three-dimensional view; Figure 6 It is the three-dimensional view of the clamping ring of the present invention; Figure 7 For the present invention Figure 4Stereogram of the partial structure; Figure 8 This is a stereogram of the partial structure of a flywheel motor rotor stacking device of the present invention; Figure 9 This is a stereogram of the inner lining shaft 1 and the inner lining tray 11 of the present invention. Specific embodiments

[0026] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1 - 9 shown, a flywheel motor rotor stacking device includes an inner lining shaft 1, an inner lining tray 11 and an outer cylinder 2. One end of the inner lining shaft 1 is arranged on the inner lining tray 11, the outer cylinder 2 is arranged around the inner lining shaft 1, and one end of the outer cylinder 2 is arranged on the inner lining tray 11. A cavity formed by the inner lining shaft 1, the inner lining tray 11 and the outer cylinder 2 is provided with silicon steel sheets 3. The inner lining tray 11 is used to hold up the silicon steel sheets 3 to position the silicon steel sheets axially and radially. The inner lining shaft 1 is similar to the motor rotor shaft 8, and the silicon steel sheets 3 are sleeved on the inner lining shaft 1 to position the silicon steel sheets 3. This structure can stack a large number of silicon steel sheets 3 according to requirements with relatively high precision.

[0028] The inner lining tray 11 is circular, the outer diameter of the inner lining tray 11 is larger than the outer diameter of the silicon steel sheets 3, and the outer diameter of the inner lining shaft 1 is smaller than the inner diameter of the silicon steel sheets 3. The inner lining shaft 1 is smaller than the silicon steel sheets 3, which is convenient for sleeving the silicon steel sheets 3 on the inner lining shaft 1. The outer diameter of the inner lining tray 11 is larger than the outer diameter of the silicon steel sheets 3, so that the inner lining tray can hold up the silicon steel sheets 3.

[0029] The inner lining shaft 1 is vertically arranged on the inner lining tray 11, and the axes of the inner lining shaft 1 and the inner lining tray 11 coincide. The inner lining shaft 1 is perpendicular to the inner lining tray 11, and the stacked silicon steel sheets 3 are unified in the vertical direction. The stacked silicon steel sheets 3 being unified in the vertical direction means being consistent with the stamping direction of the silicon steel sheets 3. This placement method can ensure that the inner and outer circles of the silicon steel sheets 3 have a relatively high roughness after stacking and good dimensional accuracy. The placement thickness of the silicon steel sheets is about 1.02 of the theoretical thickness (considering a partial stacking coefficient).

[0030] The inner lining tray 11 is provided with stress grooves 12, and the stress grooves 12 are arranged around the inner lining shaft 1. This avoids the reduction of the perpendicularity between the inner lining shaft 1 and the inner lining tray 11 due to external stress and ensures the perpendicularity between the inner lining shaft 1 and the inner lining tray 11.

[0031] On one side of the inner lining shaft 1, there is a cut surface 13 which is arranged along the length direction of the inner lining shaft 1. The cut surface 13 facilitates the separation of the inner lining shaft 1 with several silicon steel sheets 3 sleeved thereon from the silicon steel sheets 3.

[0032] It further includes an end ring 4 which is arranged on the inner lining tray 11 and surrounds the inner lining shaft 1. The end ring 4 is usually made of stainless steel material and has the function of magnetic isolation.

[0033] The outer cylinder 2 includes several limiting rods 21 which surround the silicon steel sheets 3. The several limiting rods 21 form the outer cylinder 2. The number of the limiting rods 21 can be installed according to the actual situation, and the limiting rods 21 can be quickly installed and disassembled, and the installation and disassembly efficiency is higher.

[0034] One end of the limiting rod 21 is connected with a positioning rod 22. The outer diameter of the end ring 4 is larger than that of the inner lining tray 11, and the positioning rod 22 is arranged on the side of the end ring 4 facing the inner lining tray 11. The positioning rod 22 is the protruding part at one end of the limiting rod 21, and this part cooperates with the bottom of the end ring 4 to combine the limiting rod 21 and the end ring 4 into a whole.

[0035] It further includes a clamping ring 5 which surrounds the outer cylinder 2 and is fixedly arranged on the outer cylinder 2. The clamping ring 5 circumferentially positions the limiting rods 21 to prevent the silicon steel sheets 3 from shifting around during the pressing process, resulting in reduced accuracy.

[0036] Several clamping positioning grooves 51 are arranged on the clamping ring 5 and are arranged in one-to-one correspondence with the limiting rods 21, and the limiting rods 21 are arranged in the clamping positioning grooves 51. The clamping positioning grooves 51 are used to better fix the limiting rods 21 and can also limit the positions of the limiting rods 21.

[0037] It further includes a top cover 6 which is arranged at one end of the outer cylinder 2 away from the inner lining tray 11, and the top cover 6 is fixedly connected to the outer cylinder 2.

[0038] It further includes several ejector pins 7. One end of the ejector pins 7 sequentially passes through the top cover 6 and the silicon steel sheets 3 and is fixedly arranged on the end ring 4. The silicon steel sheets 3 are not laminated and are relatively loose between the sheets. The ejector pins 7 are inserted into the positioning holes of the silicon steel sheets 3 to accurately position the silicon steel sheets 3. The ejector pins 7 usually have high hardness, good wear resistance and are not prone to plastic deformation.

[0039] One end of the ejector pin 7 which is matched with the end ring 4 is provided with a thread, and the ejector pin 7 is connected to the end ring 4 through the thread. The ejector pin 7 and the end ring 4 are in threaded cooperation, and one end of the ejector pin 7 is fixed, and the positioning effect on the silicon steel sheets 3 is good.

[0040] It further includes a lifting hook 61 which is arranged on the top cover 6. The lifting hook 61 is used for lifting the whole device, which is more convenient for lifting and can avoid damaging the whole device.

[0041] A method for stacking a flywheel motor rotor includes the following steps: S1. Select a horizontal plane, place the inner lining tray 11 on the horizontal plane, pass the end ring 4 through the inner lining shaft 1 and then place it on the inner lining tray 11, and stack the silicon steel sheets 3 on the inner lining tray 11 in sequence. The front and back sides and the axial positions of several silicon steel sheets 3 are kept consistent; S2: During the process of placing the silicon steel sheets 3, every 10 - 30 silicon steel sheets 3 are placed, then the ejector pin 7 is passed through the positioning holes on the silicon steel sheets 3 to accurately position the silicon steel sheets 3 and compact the silicon steel sheets; S3: A number of limiting rods 21 are arranged evenly around the end ring 4. The positioning rod 22 is clamped on the side of the end ring 4 close to the inner lining tray 11. The clamping ring 5 is sleeved on the limiting rods 21 from the end of the limiting rods 21 far away from the inner lining tray 11. Each limiting rod 21 moves along the corresponding clamping and positioning groove 51, and the limiting rod 21 and the clamping ring 5 are fixedly connected by bolts; S4: The ends of a number of limiting rods 21 far away from the inner lining tray 11 cover the top cover 6. The top cover 6 is fixedly connected to each limiting rod 21 by bolts. The ejector pin 7 passes through the top cover 6 and several silicon steel sheets 3 and is fixedly arranged on the end ring 4. A lifting hook 61 is arranged on the top cover 6. The lifting device is connected to the lifting hook 61 to lift the inner lining shaft 1 and the inner lining tray 11 of the flywheel motor rotor stacking device to be separated, and then the remaining part is sleeved on the motor rotor shaft 8. Then the top cover 6, the clamping ring 5 and the limiting rods 21 are disassembled in sequence to complete the installation of the silicon steel sheets 3 on the motor rotor shaft 8.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flywheel motor rotor lamination device, characterized in that: The invention comprises an inner liner shaft (1), an inner liner tray (11) and an outer cylinder (2), wherein one end of the inner liner shaft (1) is arranged on the inner liner tray (11), the outer cylinder (2) is arranged around the inner liner shaft (1), one end of the outer cylinder (2) is arranged on the inner liner tray (11), and a silicon steel sheet (3) is arranged in a cavity surrounded by the inner liner shaft (1), the inner liner tray (11) and the outer cylinder (2).

2. A flywheel motor rotor lamination device as claimed in claim 1, characterized in that: The liner tray (11) is circular, the outer diameter of the liner tray (11) is larger than the outer diameter of the silicon steel sheet (3), and the outer diameter of the liner shaft (1) is smaller than the inner diameter of the silicon steel sheet (3).

3. A flywheel motor rotor lamination device as claimed in claim 1, characterized in that: The lining shaft (1) is vertically arranged on the lining tray (11), and the axis of the lining shaft (1) coincides with the axis of the lining tray (11); a stress groove (12) is arranged on the lining tray (11), and the stress groove (12) is arranged around the lining shaft (1); a section (13) is arranged on one side of the lining shaft (1), and the section (13) is arranged along the length direction of the lining shaft (1).

4. A flywheel motor rotor lamination device as claimed in claim 1, characterized in that: It also comprises an end ring (4), wherein the end ring (4) is arranged on the liner tray (11), and the end ring (4) is arranged around the liner shaft (1).

5. A flywheel motor rotor lamination device as claimed in claim 4, characterized in that: The outer cylinder (2) comprises a plurality of limit rods (21), the limit rods (21) being arranged around the silicon steel sheet (3); one end of the limit rod (21) is connected to a positioning rod (22); the outer diameter of the end ring (4) is larger than the inner liner tray (11), and the positioning rod (22) is arranged on a side of the end ring (4) facing the inner liner tray (11).

6. A flywheel motor rotor lamination device as claimed in claim 5, characterized in that: It also comprises a clamping ring (5), the clamping ring (5) being arranged around the outer cylinder (2), the clamping ring (5) being fixedly arranged on the outer cylinder (2); the clamping ring (5) being provided with a plurality of clamping positioning grooves (51), the clamping positioning grooves (51) being arranged in one-to-one correspondence with the limiting rods (21), and the limiting rods (21) being arranged in the clamping positioning grooves (51).

7. A flywheel motor rotor lamination device as claimed in claim 5, characterized in that: It also includes a top cover (6) and a hook (61), wherein the hook (61) is arranged on the top cover (6), and the top cover (6) is arranged at an end of the outer cylinder (2) away from the liner tray (11), and the top cover (6) and the outer cylinder (2) are fixedly connected.

8. A flywheel motor rotor lamination device as claimed in claim 7, characterized in that: It also includes a plurality of ejector pins (7), one end of each of which passes through the top cover (6) and the silicon steel sheet (3) in sequence and is fixedly arranged on the end ring (4).

9. A flywheel motor rotor lamination device as claimed in claim 8, characterized in that: One end of the ejector pin (7) that matches the end ring (4) is provided with a thread, and the ejector pin (7) and the end ring (4) are connected via the thread.

10. A method for laminating a flywheel motor rotor, comprising a flywheel motor rotor laminating device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Select a horizontal plane, place the liner tray (11) on the horizontal plane, place the end ring (4) on the liner tray (11) after passing through the liner shaft (1), and stack the silicon steel sheets (3) on the liner tray (11) in sequence, with the front and back surfaces and axial positions of the silicon steel sheets (3) being consistent; S2: During the process of placing the silicon steel sheets (3), the ejector pin (7) is passed through the positioning hole on the silicon steel sheet (3) every time 10 to 30 silicon steel sheets (3) are placed, so as to accurately position the silicon steel sheet (3) and compact the silicon steel sheet; S3: A plurality of limit rods (21) are evenly arranged around the end ring (4), a positioning rod (22) is clamped on a side of the end ring (4) close to the liner tray (11), and the clamping ring (5) is sleeved on the limit rod (21) from one end of the limit rod (21) away from the liner tray (11), each limit rod (21) moves along the clamping positioning groove (51) corresponding thereto, and the limit rod (21) is fixedly connected to the clamping ring (5) by bolts; S4: The ends of the plurality of limit rods (21) away from the liner tray (11) cover the top cover (6), the top cover (6) and each limit rod (21) are fixed by bolts, the ejector pin (7) passes through the top cover (6) and the plurality of silicon steel sheets (3) and is fixedly arranged on the end ring (4), a hook (61) is arranged on the top cover (6), and a lifting device is connected to the hook (61), the liner shaft (1) of the flywheel motor rotor lamination device and the liner tray (11) are lifted and separated, and then the remaining part is put on the motor rotor shaft (8), and the top cover (6), the clamping ring (5) and the limit rod (21) are removed in turn, and the installation of the silicon steel sheet (3) on the motor rotor shaft (8) is completed.

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