Silicon steel sheet laminating and dovetail key installing and positioning device for magnetic levitation long stator

Abstract

The utility model discloses a magnetic levitation long stator silicon steel sheet lamination and dovetail key installation positioning device, which comprises a lamination assembly workbench and a lamination die, and the lamination die is installed on the lamination assembly workbench and comprises a pressing assembly and a positioning frame. Wherein the lamination coefficient of the silicon steel sheet lamination can be effectively improved through the lamination mold, so that the product percent of pass is improved, the repair cost is reduced, in addition, the dovetail key can be positioned on the silicon steel sheet lamination through the positioning frame, and the positioning precision of the dovetail key relative to the silicon steel sheet lamination can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic levitation, in particular to a silicon steel sheet lamination and dovetail key installation and positioning device for a magnetic levitation long stator. Background Art

[0002] The long stator is a core functional component that generates a magnetic field in the running track of the maglev train and supports the suspension of the train. The long stator is laid on the track. The silicon steel laminate that makes up the long stator is composed of multiple silicon steel sheets laminated together. Its lamination size and tooth groove processing accuracy are key indicators to ensure the measurement accuracy of the maglev speed measurement and positioning system; the dovetail key that makes up the long stator is made of low-alloy high-strength structural steel. It is assembled into one with the dovetail groove above the silicon steel laminate. The flatness of the dovetail key installation surface, torsion rate and other indicators affect whether the long stator can be successfully installed on the track.

[0003] The following series of problems were found during the production of long stators:

[0004] 1. The silicon steel sheet is deformed, and the installation and positioning of the dovetail key does not meet the requirements, resulting in uneven force between the dovetail key and the stator silicon steel laminate, causing the silicon steel sheet to deform.

[0005] 2. The stacking coefficient is low, and there are gaps between silicon steel sheets. After the silicon steel sheets are stacked, the pressing force is uneven or the pressing force is small, resulting in the inability of the silicon steel sheets to fit completely together, with certain gaps or the overall stacking size not meeting the requirements.

[0006] Therefore, how to improve the lamination efficiency of silicon steel sheets and the positioning accuracy of dovetail keys is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0007] In view of this, the purpose of the utility model is to provide a silicon steel sheet lamination and dovetail key installation positioning device for a magnetic levitation long stator, which can effectively improve the silicon steel sheet lamination efficiency and the dovetail key positioning accuracy.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A silicon steel sheet lamination and dovetail key installation and positioning device for a magnetic levitation long stator, comprising:

[0010] Lamination assembly workbench;

[0011] A lamination mold is installed on the lamination assembly workbench, and the lamination mold includes a clamping component and a positioning frame. The clamping component is used to clamp the silicon steel sheet stack, and the silicon steel sheet stack has a dovetail groove that cooperates with a dovetail key. The positioning frame is arranged above the clamping component, and the positioning frame is used to position the dovetail key on the silicon steel sheet stack.

[0012] In some technical schemes, the silicon steel sheet lamination and dovetail key installation and positioning device for the magnetic levitation long stator also includes a pressure device, which is arranged on the lamination assembly workbench and connected to the clamping assembly, and is used to control the clamping assembly to clamp or loosen the silicon steel sheet lamination. The lamination assembly workbench is provided with a groove for accommodating the clamping assembly, the pressure device is detachably connected to the clamping assembly, and the clamping assembly is provided with a lifting connection part.

[0013] In some technical solutions, the clamping assembly includes:

[0014] A support seat, wherein the support seat is provided with a cavity for accommodating the stack of silicon steel sheets;

[0015] A supporting back plate, the supporting back plate being arranged at one side of the concave cavity;

[0016] An extrusion plate is arranged on a side of the concave cavity opposite to the supporting back plate, and a connecting piece is provided on the side of the extrusion plate away from the supporting back plate, one end of the connecting piece extends out of the concave cavity and is connected to the pressure device.

[0017] In some technical solutions, an elastic member is provided between a side of the extrusion plate facing away from the supporting back plate and an inner side surface of the concave cavity, and the elastic member is used to apply pressure to the extrusion plate toward the supporting back plate.

[0018] In some technical solutions, a plurality of groups of elastic members distributed along the length extension direction of the extrusion plate are provided between the extrusion plate and the concave cavity.

[0019] In some technical solutions, the extrusion plate and the support back plate are provided with avoidance grooves for avoiding the dovetail key.

[0020] In some technical solutions, the support seat includes a bottom plate and a vertical plate arranged on the bottom plate and surrounding the concave cavity, and a limit plate is provided on the vertical plate, and the limit plate is used to limit the position of the silicon steel sheet in the thickness direction.

[0021] In some technical solutions, the pressure device is a pneumatic cylinder or a hydraulic cylinder.

[0022] In some technical solutions, a control system is provided in the stacking assembly workbench, and the control system is connected to the pressure device, and the control system is used to apply a pressure of a preset size and a preset duration to the pressing assembly through the pressure device.

[0023] In some technical schemes, the positioning frame includes a frame and several groups of limit columns arranged at the bottom of the frame, the number of groups of the limit columns is the same as the number of the dovetail keys on the silicon steel sheet stack, and the dovetail keys are provided with connecting holes for the limit columns to extend into.

[0024] Compared with the prior art, the above technical solution has the following advantages:

[0025] The utility model provides a silicon steel sheet lamination and dovetail key installation and positioning device for a magnetic levitation long stator, comprising: a lamination assembly workbench and a lamination mold, wherein the lamination mold is installed on the lamination assembly workbench, and the lamination mold comprises a clamping component and a positioning frame. The lamination mold can effectively improve the lamination coefficient of the silicon steel sheet lamination, thereby improving the product qualification rate and reducing the rework cost. In addition, the positioning frame can position the dovetail key on the silicon steel sheet lamination, which can ensure the positioning accuracy of the dovetail key relative to the silicon steel sheet lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a silicon steel sheet lamination and dovetail key installation and positioning device for a magnetic levitation long stator provided by a specific embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the structure of the stacking assembly workbench;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the lamination mold;

[0030] Figure 4 is a top view of the lamination die;

[0031] Figure 5 It is the front view of the lamination die;

[0032] Figure 6 A side view of the lamination die.

[0033] The reference numerals are as follows:

[0034] 10-stack assembly workbench, 11-groove, 12-concave platform;

[0035] 20- stacking mold;

[0036] 21-pressing assembly, 211-support seat, 2111-bottom plate, 2112-vertical plate, 2113-limiting plate;

[0037] 212-support back plate, 213-extrusion plate, 214-connecting piece, 215-elastic piece, 216-lifting connection part;

[0038] 22-positioning frame, 221-frame, 222-limiting column. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Please refer to Figure 1 The present invention provides a device for laminating and installing a dovetail key for a long magnetic levitation stator with silicon steel sheets, including a laminating assembly workbench 10 and a laminating die 20, wherein the laminating die 20 is installed on the laminating assembly workbench 10, wherein the laminating die 20 as a whole can be made of die steel, and the inner surface of the laminating die 20 is subjected to surface nitriding treatment, the nitriding depth is above 0.2 mm, and the surface hardness reaches above HRC55. The laminating die 20 includes a clamping assembly 21 and a positioning frame 22. In the specific working process, a plurality of silicon steel sheets are firstly stacked by a tooling, and then the preliminarily stacked silicon steel sheet lamination is placed in the clamping assembly 21 of the laminating die 20, and then the dovetail key is passed through the dovetail groove on the silicon steel sheet, and then the dovetail key is positioned by the positioning frame 22 above the clamping assembly 21, and finally pressure is applied to the clamping assembly 21 to compress the silicon steel sheet lamination, and after a certain period of time, the clamping assembly 21 is released, and finally the laminating die 20 is transferred to a baking furnace for baking treatment. The clamping assembly 21 can effectively improve the stacking coefficient of the silicon steel sheet stack, thereby improving the product qualification rate and reducing the rework cost. In addition, the positioning frame 22 can position the dovetail key on the silicon steel sheet stack, which can ensure the positioning accuracy of the dovetail key relative to the silicon steel sheet stack.

[0041] In some embodiments, the silicon steel sheet lamination and dovetail key installation positioning device for the magnetic levitation long stator further includes a pressure device, which is arranged on the lamination assembly workbench 10 and connected to the clamping assembly 21. The pressure device is a pneumatic cylinder or a hydraulic cylinder, and the maximum pressure of the pressure device is 100kN. The pressure device is used to control the clamping assembly 21 to clamp or loosen the silicon steel sheet lamination. Figure 2As shown, the stacking assembly workbench 10 is provided with a groove 11 for accommodating the clamping assembly 21. The shape of the groove 11 is adapted to the external structure of the clamping assembly 21. For example, when the external structure of the clamping assembly 21 is a rectangular parallelepiped structure, the shape of the groove 11 is a rectangular groove. The pressure device is detachably connected to the clamping assembly 21. The clamping assembly 21 is provided with a lifting connection portion 216. The lifting connection portion 216 is preferably a lifting hook. Specifically, a plurality of lifting hooks can be provided above the clamping assembly 21 to ensure stability during lifting. After the pressure device applies pressure to the clamping assembly 21 for a preset period of time, the clamping assembly 21 can be separated from the pressure device, and then the lifting device is connected to the lifting connection portion 216. The lifting device lifts the clamping assembly 21 and transports the clamping assembly 21 and the positioning frame 22 to the baking oven for baking.

[0042] In some embodiments, Figure 3~Figure 6 As shown, the clamping assembly 21 includes: a support seat 211, a support back plate 212 and an extrusion plate 213, wherein the support seat 211 is provided with a cavity for accommodating the laminated silicon steel sheets. The support back plate 212 is arranged at one side of the cavity, and the extrusion plate 213 is arranged at a side of the cavity opposite to the support back plate 212. A connector 214 is arranged on the side of the extrusion plate 213 away from the support back plate 212, and one end of the connector 214 extends out of the cavity and is connected to the pressure device, wherein a plurality of connectors 214 can be arranged on the side of the extrusion plate 213 away from the support plate, and the plurality of connectors 214 are distributed along the length extension direction of the extrusion plate 213. When two connectors 214 are selected, the two connectors 214 are preferably arranged at two quarters near the middle of the extrusion plate 213, wherein each connector 214 is connected to a pressure device, and the extrusion effect of the clamping assembly 21 can be improved by using a plurality of pressure devices, and it is beneficial to ensure the uniformity of the force on the pressure plate. The connecting member 214 is preferably a strip-shaped structure, and a connecting hole is provided on one end of the connecting member 214 away from the extrusion plate 213 .

[0043] In some embodiments, an elastic member 215 is provided between the side of the extrusion plate 213 away from the supporting back plate 212 and the inner side of the concave cavity, and the elastic member 215 can apply pressure to the extrusion plate 213 toward the supporting back plate 212. When the pressure device is separated from the extrusion assembly, the extrusion plate 213 can still apply extrusion force to the silicon steel sheet stack under the action of the elastic member 215. Further, in order to improve the force uniformity of the extrusion plate 213, multiple groups of elastic members 215 distributed along the length extension direction of the extrusion plate 213 are provided between the extrusion plate 213 and the concave cavity. The elastic member 215 is preferably a disc spring.

[0044] In some embodiments, the extrusion plate 213 and the support back plate 212 are provided with avoidance grooves for avoiding the dovetail key, and the avoidance grooves facilitate the dovetail key to be horizontally loaded into the dovetail groove on the silicon steel sheet stack. Specifically, an avoidance groove can also be provided on the back of the support seat 211, and the dovetail key can be pushed into the dovetail groove from the back of the support seat 211. The extrusion plate 213 includes a first plate, a second plate and a connecting plate, and the three are preferably an integrally formed structure, the first plate and the second plate are parallel to each other and vertically arranged in the concave cavity, and the connecting plate is located between the first plate and the second plate, wherein the first plate is connected to the pressure device through a connecting member 214, and the second plate is provided with an avoidance groove.

[0045] In some embodiments, the support seat 211 includes a bottom plate 2111 and a vertical plate 2112 disposed on the bottom plate 2111 and surrounding a concave cavity, and a limit plate 2113 is disposed on the vertical plate 2112, and the limit plate 2113 can limit the position of the silicon steel sheet in the thickness direction. Specifically, the support seat 211 is a rectangular structure with a concave cavity on the top, and the vertical plate 2112 includes a front plate, a rear plate, a left plate and a right plate, and the four plates are surrounded by a rectangular frame, wherein the front plate is provided with a through hole for the connector 214 to extend out, and the left plate and the right plate are respectively provided with a plurality of square holes with the opening direction along the left-right direction, and the plurality of square holes are distributed along the front-back direction, and the rear plate is provided with an avoidance groove. Figure 4 As shown, a limit plate 2113 is respectively provided on the sections of the left plate and the right plate close to the front plate. The width of the limit plate 2113 on the left plate is greater than that of the left plate, and the width of the limit plate 2113 on the right plate is greater than that of the right plate. The spacing between the two limit plates 2113 is smaller than the spacing between the left plate and the right plate, that is, the opposite sides of the two limit plates 2113 are located above the concave cavity. When the silicon steel sheet stack is vertically placed between the extrusion plate 213 and the supporting back plate 212, it will be blocked by the rear end surface of the limit plate 2113, so the silicon steel sheet stack can be limited in the thickness direction.

[0046] In some embodiments, a control system is provided in the stacking assembly workbench 10, and the control system is connected to a pressure device, wherein the stacking assembly workbench 10 is preferably a frame 221 structure with a workbench on the top, and a support structure for supporting the control system is provided inside the frame 221, and a groove 11 for accommodating the stacking mold 20 and a concave platform 12 for accommodating the pressure device are provided on the workbench. The control system can apply a pressure of a preset size and a preset duration to the clamping component 21 through the pressure device, for example, a hydraulic cylinder is used to apply pressure to the clamping component 21, specifically, a pressure of 75kN can be applied to the clamping component 21, and maintained for a preset duration. After the time is up, the clamping component 21 is depressurized, and the clamping operation of the clamping component 21 is completed at this time. The control system can send a release control signal to the pressure device to make the clamping component 21 release the silicon steel sheet stack, and then the connection between the pressure device and the clamping component 21 can be released.

[0047] In some embodiments, Figure 3 As shown, the positioning frame 22 includes a frame 221 and a plurality of limit columns 222 arranged at the bottom of the frame 221. The number of the limit columns 222 is the same as the number of dovetail keys on the silicon steel sheet stack. For example, three dovetail grooves are provided on the silicon steel sheet stack, and each dovetail key is provided with a connecting hole for the limit column 222 to extend into. The number of connecting holes on each dovetail key is preferably two. At this time, the frame 221 is preferably a Japanese-shaped frame 221, and two limit columns 222 are respectively provided at both ends and the middle of the bottom of the frame 221, wherein the bottom surface of the frame 221 can contact the upper surface of the dovetail key. Therefore, when the positioning frame 22 is pressed against the dovetail key, the flatness and verticality of the dovetail key can be guaranteed.

[0048] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above is a detailed introduction to the silicon steel sheet lamination and dovetail key installation and positioning device for a magnetically levitated long stator provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A device for laminating silicon steel sheets and installing dovetail keys for magnetic levitation long stators, characterized in that: include: Lamination assembly workbench (10); A lamination die (20) is installed on the lamination assembly workbench (10), the lamination die (20) comprising a clamping assembly (21) and a positioning frame (22), the clamping assembly (21) being used to clamp the silicon steel sheet lamination, the silicon steel sheet lamination having a dovetail groove cooperating with a dovetail key, the positioning frame (22) being arranged above the clamping assembly (21), the positioning frame (22) being used to position the dovetail key on the silicon steel sheet lamination.

2. The device for laminating silicon steel sheets and installing dovetail keys for magnetic levitation long stators according to claim 1 is characterized in that: It also includes a pressure device, which is arranged on the stacking assembly workbench (10) and connected to the clamping assembly (21) for controlling the clamping assembly (21) to clamp or loosen the silicon steel sheet stack. The stacking assembly workbench (10) is provided with a groove (11) for accommodating the clamping assembly (21). The pressure device is detachably connected to the clamping assembly (21), and the clamping assembly (21) is provided with a lifting connection part (216).

3. The device for laminating silicon steel sheets and installing dovetail keys for magnetic levitation long stators according to claim 2 is characterized in that: The pressing assembly (21) comprises: A support seat (211), wherein the support seat (211) is provided with a cavity for accommodating the stack of silicon steel sheets; A supporting back plate (212), the supporting back plate (212) being arranged at one side of the concave cavity; An extrusion plate (213), the extrusion plate (213) being arranged on a side of the concave cavity opposite to the supporting back plate (212), a connecting piece (214) being arranged on a side of the extrusion plate (213) facing away from the supporting back plate (212), one end of the connecting piece (214) extending out of the concave cavity and connected to the pressure device.

4. The silicon steel sheet lamination and dovetail key installation and positioning device for a magnetic levitation long stator according to claim 3 is characterized in that: An elastic member (215) is provided between a side of the extrusion plate (213) facing away from the support back plate (212) and an inner side surface of the concave cavity, and the elastic member (215) is used to apply pressure to the extrusion plate (213) towards the support back plate (212).

5. The device for laminating silicon steel sheets and installing dovetail keys for magnetically levitated long stators according to claim 4 is characterized in that: A plurality of groups of elastic members (215) distributed along the length extension direction of the extrusion plate (213) are provided between the extrusion plate (213) and the concave cavity.

6. The device for laminating silicon steel sheets and installing dovetail keys for magnetically levitated long stators according to claim 3 is characterized in that: The extrusion plate (213) and the support back plate (212) are provided with avoidance grooves for avoiding the dovetail key.

7. The silicon steel sheet lamination and dovetail key installation and positioning device for magnetic levitation long stator according to claim 3 is characterized in that: The support seat (211) comprises a bottom plate (2111) and a vertical plate (2112) arranged on the bottom plate (2111) and surrounding the concave cavity, wherein a limiting plate (2113) is provided on the vertical plate (2112), and the limiting plate (2113) is used to limit the position of the silicon steel sheet in the thickness direction.

8. The device for laminating silicon steel sheets and installing dovetail keys for magnetically levitated long stators according to claim 2, characterized in that: The pressure device is a pneumatic cylinder or a hydraulic cylinder.

9. The silicon steel sheet lamination and dovetail key installation and positioning device for magnetic levitation long stator according to claim 2, characterized in that: A control system is provided in the stacking assembly workbench (10), the control system being connected to the pressure device, and the control system being used to apply a pressure of a preset magnitude and a preset duration to the pressing component (21) through the pressure device.

10. The silicon steel sheet lamination and dovetail key installation and positioning device for a magnetic levitation long stator according to any one of claims 1 to 9, characterized in that: The positioning frame (22) comprises a frame (221) and a plurality of limiting columns (222) arranged at the bottom of the frame (221), the number of the limiting columns (222) being the same as the number of the dovetail keys on the silicon steel sheet stack, and the dovetail keys being provided with connection holes for the limiting columns (222) to extend into.

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