Flywheel motor rotor lamination device

Abstract

The utility model provides a kind of flywheel motor rotor superposition device, belong to flywheel energy storage technology field, the inner lining shaft one end is arranged on inner lining tray, the outer cylinder is arranged around inner lining shaft, the outer cylinder one end is arranged on inner lining tray, and silicon steel sheet is arranged in the cavity formed by inner lining shaft, inner lining tray and outer cylinder;Silicon steel sheet is lifted by inner lining tray, and silicon steel sheet is positioned axially and radially, and inner lining shaft is similar to motor rotor shaft, and silicon steel sheet is sleeved on inner lining shaft, and silicon steel sheet is positioned, and the structure can stack many silicon steel sheets according to requirement, and precision is higher.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and more specifically, to a flywheel motor rotor stacking device. Background Technology

[0002] In practical applications, flywheel motors typically reduce eddy current losses by minimizing eddy current generation. For example, the motor rotor uses thin silicon steel sheets (0.1mm~0.5mm), unlike the stator's silicon steel core and coil winding structure. For users, assembling the motor rotor is usually not possible independently; it requires assembly along with the motor shaft on the flywheel according to a predetermined procedure. If the silicon steel sheets are installed one by one onto the motor shaft, considering that some flywheel shafts are long and have large diameters, each sheet requires crane assistance, resulting in low efficiency. Furthermore, the positioning devices used during the installation of each silicon steel sheet are inconsistent, significantly affecting the assembly accuracy.

[0003] Therefore, there is an urgent need for a stacking device and method for pressing together silicon steel sheets on a motor rotor to improve assembly accuracy and installation efficiency. Utility Model Content

[0004] In view of this, this utility model proposes a method of lifting and pressing the silicon steel sheets together before installing them onto the motor shaft, which greatly improves the assembly efficiency and accuracy of the motor rotor.

[0005] The technical solution of this utility model is implemented as follows: a flywheel motor rotor stacking device includes an inner liner shaft, an inner liner tray and an outer cylinder. One end of the inner liner shaft is set on the inner liner tray, and the outer cylinder is arranged around the inner liner shaft. One end of the outer cylinder is set on the inner liner tray, and silicon steel sheets are arranged in the cavity formed by the inner liner shaft, the inner liner tray and the outer cylinder.

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

[0007] Based on the above technical solutions, preferably, the inner lining shaft is vertically arranged on the inner lining tray, and the inner lining shaft coincides with the axis of the inner lining tray.

[0008] Based on the above technical solutions, preferably, the inner lining tray is provided with stress grooves, and the stress grooves are arranged around the inner lining shaft.

[0009] Based on the above technical solutions, preferably, a cut surface is provided on one side of the inner lining shaft, and the cut surface is provided along the length direction of the inner lining shaft.

[0010] Based on the above technical solutions, preferably, it also includes an end ring, which is disposed on the inner lining tray and is arranged around the inner lining shaft.

[0011] Based on the above technical solutions, preferably, the outer cylinder includes a plurality of limiting rods, which are arranged around the silicon steel sheet.

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

[0013] Based on the above technical solutions, preferably, a clamping ring is also included, wherein the clamping ring is arranged around the outer cylinder and is fixedly mounted on the outer cylinder.

[0014] Based on the above technical solutions, preferably, the clamping ring is provided with a plurality of clamping positioning grooves, and the clamping positioning grooves are provided in a one-to-one correspondence with the limiting rods, with the limiting rods being disposed in the clamping positioning grooves.

[0015] Based on the above technical solutions, preferably, it also includes a top cover, which is disposed at the end of the outer cylinder away from the inner lining tray, and the top cover is fixedly connected to the outer cylinder.

[0016] Based on the above technical solutions, preferably, it also includes a number of ejector pins, one end of which passes through the top cover and the silicon steel sheet in sequence and is fixedly mounted on the end ring.

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

[0018] Based on the above technical solutions, preferably, a hook is also included, which is installed on the top cover.

[0019] This utility model provides a flywheel motor rotor stacking device and stacking method, which has the following advantages over the prior art:

[0020] The silicon steel sheets are supported by an inner liner tray, which positions the silicon steel sheets axially and radially. The inner liner shaft is similar to the rotor shaft of a motor. The silicon steel sheets are fitted onto the inner liner shaft for positioning. This structure can stack a large number of silicon steel sheets according to requirements with high precision.

[0021] The inner liner shaft is smaller than the silicon steel sheet, making it easier to fit the silicon steel sheet onto the inner liner shaft. The outer diameter of the inner liner tray is larger than the outer diameter of the silicon steel sheet, and the inner liner tray can support the silicon steel sheet. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the installation of a flywheel motor rotor stacking device according to the present invention;

[0024] Figure 2 This is a perspective view of a flywheel motor rotor stacking device according to the present invention;

[0025] Figure 3 This is a perspective view of the top cover of this utility model;

[0026] Figure 4 This is a partial three-dimensional view of a flywheel motor rotor stacking device according to the present invention;

[0027] Figure 5 This utility model Figure 4 A three-dimensional view of the local structure;

[0028] Figure 6 This is a perspective view of the clamping ring of this utility model;

[0029] Figure 7 This utility model Figure 4 A three-dimensional view of the local structure;

[0030] Figure 8 This is a partial three-dimensional view of a flywheel motor rotor stacking device according to the present invention;

[0031] Figure 9 This is a perspective view of the inner lining shaft 1 and the inner lining tray 11 of this utility model. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] like Figure 1-9As shown, a flywheel motor rotor stacking device includes an inner liner shaft 1, an inner liner tray 11, and an outer cylinder 2. One end of the inner liner shaft 1 is mounted on the inner liner tray 11, and the outer cylinder 2 is arranged around the inner liner shaft 1, with one end also mounted on the inner liner tray 11. Silicon steel sheets 3 are arranged within a cavity formed by the inner liner shaft 1, inner liner tray 11, and outer cylinder 2. The inner liner tray 11 supports the silicon steel sheets 3, providing axial and radial positioning. The inner liner shaft 1 is similar to a motor rotor shaft 8, and the silicon steel sheets 3 are fitted onto the inner liner shaft 1 for positioning. This structure allows for the stacking of numerous silicon steel sheets 3 according to requirements with high precision.

[0034] The inner lining tray 11 is circular, with an outer diameter larger than that of the silicon steel sheet 3, and an outer diameter smaller than that of the inner lining shaft 1. The inner lining shaft 1 is smaller than the silicon steel sheet 3, which facilitates the fitting of the silicon steel sheet 3 onto the inner lining shaft 1. The outer diameter of the inner lining tray 11 is larger than that of the silicon steel sheet 3, allowing the inner lining tray 1 to support the silicon steel sheet 3.

[0035] The inner lining shaft 1 is vertically mounted on the inner lining tray 11, and the axis of the inner lining shaft 1 coincides with that of the inner lining tray 11. The inner lining shaft 1 is perpendicular to the inner lining tray 11, and the stacked silicon steel sheets 3 are aligned vertically. This alignment ensures that the stacked silicon steel sheets 3 are aligned with the stamping direction, guaranteeing a high surface roughness and good dimensional accuracy for both the inner and outer circumferences of the silicon steel sheets 3 after stacking. The stacked thickness of the silicon steel sheets is approximately 1.02 times the theoretical thickness (considering a partial stacking coefficient).

[0036] The inner lining tray 11 is provided with stress grooves 12, which are arranged around the inner lining shaft 1. This prevents the perpendicularity between the inner lining shaft 1 and the inner lining tray 11 from decreasing due to external stress, thus ensuring the perpendicularity between the inner lining shaft 1 and the inner lining tray 11.

[0037] A cut surface 13 is provided on one side of the inner liner shaft 1, and the cut surface 13 is provided along the length direction of the inner liner shaft 1. The cut surface 13 facilitates the separation of the inner liner shaft 1, which is fitted with several silicon steel sheets 3, from the silicon steel sheets 3.

[0038] It also includes an end ring 4, which is disposed on the inner liner tray 11 and surrounds the inner liner shaft 1. The end ring 4 is typically made of stainless steel and has a magnetic shielding function.

[0039] The outer cylinder 2 includes several limiting rods 21, which are arranged around the silicon steel sheet 3. The outer cylinder 2 is composed of several limiting rods 21. Different numbers of limiting rods 21 can be installed according to actual conditions, and the limiting rods 21 can be quickly installed and removed, resulting in higher installation and removal efficiency.

[0040] One end of the limiting rod 21 is connected to a positioning rod 22. The outer diameter of the end ring 4 is larger than that of the inner lining tray 11. The positioning rod 22 is located on the side of the end ring 4 facing the inner lining tray 11. The positioning rod 22 is the part that protrudes from one end of the limiting rod 21. 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.

[0041] It also includes a clamping ring 5, which is arranged around the outer cylinder 2 and fixedly mounted on the outer cylinder 2. The clamping ring 5 positions the limiting rod 21 circumferentially, preventing the silicon steel sheet 3 from shifting outwards during the clamping process, thus avoiding a decrease in accuracy.

[0042] The clamping ring 5 is provided with a plurality of clamping positioning grooves 51, and each clamping positioning groove 51 is provided in a corresponding manner to a limiting rod 21, with the limiting rod 21 disposed within the clamping positioning groove 51. The clamping positioning groove 51 is used to better fix the limiting rod 21, and at the same time, it can also limit the position of the limiting rod 21.

[0043] It also includes a top cover 6, which is located at the 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.

[0044] It also includes several ejector pins 7, one end of which passes through the top cover 6 and the silicon steel sheet 3 in sequence and is fixedly mounted on the end ring 4. The silicon steel sheet 3 is not stacked and is relatively loose between the sheets. The ejector pins 7 are inserted into the positioning holes of the silicon steel sheet 3 to precisely position the silicon steel sheet 3. The ejector pins 7 are usually high in hardness, have good wear resistance, and are not prone to plastic deformation.

[0045] The end of the ejector pin 7 that mates with the end ring 4 is threaded, and the ejector pin 7 and the end ring 4 are connected by the thread. The ejector pin 7 and the end ring 4 are engaged by the thread, and one end of the ejector pin 7 is fixed, which provides a good positioning effect for the silicon steel sheet 3.

[0046] It also includes a lifting hook 61, which is mounted on the top cover 6. The lifting hook 61 is used to lift the entire device, making lifting more convenient and avoiding damage to the entire device.

[0047] A method for stacking flywheel motor rotors includes the following steps:

[0048] S1. Select a horizontal plane, place the inner lining tray 11 on the horizontal plane, and place the end ring 4 on the inner lining tray 11 after passing through the inner lining shaft 1. Stack the silicon steel sheets 3 on the inner lining tray 11 in sequence, and keep the front and back sides and axial positions of the silicon steel sheets 3 consistent.

[0049] S2: During the process of placing silicon steel sheets 3, every 10-30 silicon steel sheets 3 are placed, the ejector pin 7 is passed through the positioning hole on the silicon steel sheet 3 to accurately position the silicon steel sheet 3 and press the silicon steel sheet firmly.

[0050] S3: Several limiting rods 21 are evenly arranged around the end ring 4. The positioning rod 22 is snapped into the side of the end ring 4 near the inner lining tray 11. The clamping ring 5 is sleeved onto the limiting rod 21 from the end of the limiting rod 21 away from the inner lining tray 11. Each limiting rod 21 moves along its corresponding clamping positioning groove 51. The limiting rod 21 is fixedly connected to the clamping ring 5 by bolts.

[0051] S4: The ends of several limiting rods 21 away from the inner liner tray 11 cover the top cover 6. The top cover 6 is fixed 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 fixed on the end ring 4. The top cover 6 is equipped with a hook 61. The lifting device is connected to the hook 61 to lift the flywheel motor rotor stacking device, detach the inner liner shaft 1 and the inner liner tray 11, and then put the remaining part on the motor rotor shaft 8. The top cover 6, clamping ring 5 and limiting rods 21 are disassembled in sequence to complete the installation of silicon steel sheets 3 on the motor rotor shaft 8.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flywheel motor rotor stacking device, characterized in that: It 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 set on the inner lining tray (11), and the outer cylinder (2) is set around the inner lining shaft (1). One end of the outer cylinder (2) is set on the inner lining tray (11). Silicon steel sheets (3) are arranged around the cavity of the inner lining shaft (1), the inner lining tray (11) and the outer cylinder (2).

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

3. The flywheel motor rotor stacking device as described in claim 1, characterized in that: The inner lining shaft (1) is vertically arranged on the inner lining tray (11), and the axis of the inner lining shaft (1) coincides with that of the inner lining tray (11); the inner lining tray (11) is provided with a stress groove (12), and the stress groove (12) is arranged around the inner lining shaft (1).

4. The flywheel motor rotor stacking device as described in claim 1, characterized in that: A cut surface (13) is provided on one side of the inner lining shaft (1), and the cut surface (13) is provided along the length direction of the inner lining shaft (1).

5. The flywheel motor rotor stacking device as described in claim 1, characterized in that: It also includes an end ring (4) which is disposed on the inner liner tray (11) and is disposed around the inner liner shaft (1).

6. The flywheel motor rotor stacking device as described in claim 5, characterized in that: The outer cylinder (2) includes several limiting rods (21), which are arranged around the silicon steel sheet (3); one end of the limiting rod (21) is connected to 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).

7. The flywheel motor rotor stacking device as described in claim 5, characterized in that: It also includes a clamping ring (5), which is arranged around the outer cylinder (2) and is fixedly arranged on the outer cylinder (2).

8. The flywheel motor rotor stacking device as described in claim 7, characterized in that: The clamping ring (5) is provided with a plurality of clamping positioning grooves (51), and the clamping positioning grooves (51) are provided in correspondence with the limiting rods (21), and the limiting rods (21) are provided in the clamping positioning grooves (51).

9. The flywheel motor rotor stacking device as described in claim 5, characterized in that: It also includes a top cover (6) and a hook (61). The top cover (6) is located at one end of the outer cylinder (2) away from the inner lining tray (11). The top cover (6) is fixedly connected to the outer cylinder (2). The hook (61) is located on the top cover (6).

10. The flywheel motor rotor stacking device as described in claim 9, characterized in that: It also includes several ejector pins (7), one end of which passes through the top cover (6) and the silicon steel sheet (3) in sequence, and is fixedly mounted on the end ring (4).

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