Rail transit linear motor induction plate

Abstract

The utility model discloses a rail transit linear motor induction plate, including back iron and set up on the aluminium cover plate of back iron, its characterized in that, the upper surface of aluminium cover plate (10) forms a plurality of parallel arrangement's V -shaped groove (11), and the section of each V -shaped groove (11) is trapezoidal. The utility model's structure standardizes secondary induction eddy current path, weakens horizontal lateral end effect, and can effectively reduce secondary induction plate loss. Compared with linear rectangular groove, V -shaped groove structure can make vehicle traction force continuous and stable, and the two edges of horizontal direction V -shaped groove provide centering induction force, so that vehicle has no offset lateral force.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and more specifically to a linear motor induction board for rail transit. Background Technology

[0002] Currently, linear motor vehicle technology has been put into practical application, and linear motor transportation systems have become a mature and reliable rail transit system. The linear motor induction plate, as an important component of the motor rotor, is a key component providing traction and electric braking force, and is generally laid on the track in a modular form. In existing technology, linear motor induction plates are mainly divided into two types: flat plate type and cap-shaped laminated type. Flat plate induction plates, due to their simple structure and low manufacturing cost, are typically used in depots and other lines with low traction requirements. However, the subsequently developed cap-shaped laminated induction plate, through structural optimization, significantly improves the performance of the linear induction motor, thus its application is more widespread and it is used on mainline operating lines.

[0003] The existing laminated induction plate adopts a prefabricated steel structure design, mainly composed of aluminum cover plates, back irons, insulating films, and installation accessories. The back iron is a welded assembly, consisting of two parts: the laminated layers and the mounting bracket. The main body of the mounting bracket adopts a continuous angle steel structure, with special supports welded to the long side of the angle steel to support the aluminum cover plates, which are fastened together with bolts. The bottom edge of the angle steel is fixed to the sleeper with anchor bolts.

[0004] Both types of induction panels have some drawbacks, such as low efficiency and low power factor. Induction panels using a composite structure of a laminated backplate and a cap-shaped aluminum cover plate have complex manufacturing processes and higher costs. For example, the backplate involves large-scale welding, resulting in significant welding deformation during processing, high costs for deformation control, and increased weight.

[0005] Therefore, in order to at least partially address the shortcomings of the existing technology, it is essential to invent a new linear motor induction plate for rail transit. Utility Model Content

[0006] This utility model is mainly aimed at addressing the above-mentioned deficiencies in the prior art, and aims to provide a linear motor induction plate for rail transit, including: a back iron and an aluminum cover plate disposed on the back iron, wherein a plurality of parallel V-shaped grooves (11) are formed on the upper surface of the aluminum cover plate (10), and the cross-section of each V-shaped groove (11) is trapezoidal.

[0007] According to the embodiment of this utility model, the linear motor induction plate for rail transit also includes an insulating film disposed between the aluminum cover plate (10) and the back iron to prevent electrical connection between the two.

[0008] According to the embodiments of this utility model, the insulating film is selected from alkali-free glass fiber cloth and Teflon cloth.

[0009] According to the embodiment of the present invention, the back iron includes a laminated layer (20) and a plurality of mounting brackets (30). The laminated layer (20) is disposed above the plurality of mounting brackets (30) and below the aluminum cover plate (10). The aluminum cover plate (10) is fixed on the plurality of mounting brackets (30).

[0010] According to the embodiment of this utility model, the laminated layer (20) is composed of multiple square steel or flat steel stacked together.

[0011] According to the embodiment of the present invention, the mounting bracket (30) includes two L-shaped sub-branch (31), a central support (32) connecting the two L-shaped sub-branch (31), and two supports (33) respectively fixed on the outer side wall of the vertical part of the two L-shaped sub-branch (31), wherein the top surface of the central support (32) is lower than the top of the vertical part of the two L-shaped sub-branch (31).

[0012] According to the implementation scheme of this utility model, the L-shaped bracket (31) is a large angle steel.

[0013] According to the embodiment of this utility model, the laminated layer (20) is fixed on the central support (32), and the two sides of the aluminum cover plate (10) are fixed on two supports (33), thereby being fixed on the mounting bracket (30).

[0014] According to the embodiment of this utility model, a fixing hole (311) is formed on the horizontal part of the L-shaped bracket (31).

[0015] The support (33) is in the shape of a "┐", with the vertical part fixed on the L-shaped bracket (31) and the horizontal part having a fixing groove (331) for fixing the aluminum cover plate (10).

[0016] In comparison, this invention achieves numerous beneficial technical effects. For example, the V-groove aluminum cover plate structure standardizes the secondary induction eddy current path, weakens the lateral edge effect, and effectively reduces the loss of the secondary induction plate. The V-groove aluminum cover plate provides centered induction stress, preventing the generation of offset lateral forces, improving the performance of the linear motor, and making vehicle operation more stable and reliable. The split mounting bracket reduces welding deformation. The weight is reduced after the aluminum cover plate is grooved, and the split bracket is also correspondingly lighter than the continuous angle steel bracket, thus reducing the overall weight of the induction plate and making it easier to handle and install. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural diagram of the linear motor induction plate for rail transit according to the embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the linear motor induction plate for rail transit according to an embodiment of the present utility model;

[0019] Figure 3 A three-dimensional structural diagram of the back iron of the linear motor induction plate for rail transit according to the embodiment of this utility model;

[0020] Figure 4 A schematic diagram of the cross-sectional structure of the back iron of the linear motor induction plate for rail transit according to an embodiment of this utility model; and

[0021] Figure 5 This is a three-dimensional structural diagram of the mounting bracket for the linear motor induction plate of rail transit according to the embodiment of this utility model. Detailed Implementation

[0022] The present invention can be better understood from the accompanying drawings and the following embodiments. However, those skilled in the art will readily understand that the description of the embodiments is for illustrative purposes only and should not, and will not, limit the present invention.

[0023] Figure 1 This is a three-dimensional structural diagram of the linear motor induction plate for rail transit according to the embodiment of this utility model; Figure 2 This is a cross-sectional schematic diagram of the induction plate of a linear motor for rail transit according to an embodiment of the present utility model.

[0024] As shown in the figure, the linear motor induction plate for rail transit in the embodiment may include a back iron and an aluminum cover plate (10) disposed on the back iron. The back iron includes a laminated layer (20) and a plurality of mounting brackets (30). The laminated layer (20) is disposed above the plurality of mounting brackets (30) and below the aluminum cover plate (10). The aluminum cover plate (10) is fixed on the plurality of mounting brackets (30). The various components of the linear motor induction plate for rail transit are described in detail below with reference to the accompanying drawings.

[0025] Referring to the attached drawings, multiple parallel V-shaped grooves (11) are formed on the upper surface of the aluminum cover plate (10). Each V-shaped groove has a beveled top to form a trapezoidal V-groove, that is, the cross-section of each V-shaped groove (11) is a regular trapezoid. The aluminum cover plate (10) has a connection and fixing structure on both sides, as shown in the figure. This structure can be a continuous slide with a cavity in the middle, a lower part and an end face opening, so that a bolt with a screw head can be inserted into it for fixing (which will be described in detail later).

[0026] Research has found that the structure of this invention can regulate the secondary induction eddy current path, weaken the lateral edge effect, and effectively reduce the loss of the secondary induction plate. Compared with a straight rectangular groove, the V-shaped groove structure of this invention can make the vehicle's traction force continuous and stable, while the two sides of the horizontal V-shaped groove provide centering stress, so that the vehicle has no lateral deviation force. This structure can improve the performance of the linear motor, and with the improvement of motor efficiency, the total operating cost will also be reduced.

[0027] In addition, the aluminum cover plate and back iron can be treated with anti-corrosion measures to ensure a certain service life. More specifically, the aluminum cover plate can be anodized aluminum plate, and the back iron can be coated with anti-corrosion paint to ensure a service life of 30 years. An insulating film (not shown) needs to be installed between the aluminum cover plate (10) and the back iron to prevent electrical connection. For example, the insulating film can generally be made of alkali-free fiberglass cloth, Teflon cloth, or other materials with high insulation and high temperature resistance.

[0028] Figure 3 A three-dimensional structural diagram of the back iron of the linear motor induction plate for rail transit according to the embodiment of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the back iron of the linear motor induction plate for rail transit according to the embodiment of this utility model. Figure 5 This is a three-dimensional structural diagram of the mounting bracket for the linear motor induction plate of rail transit according to the second embodiment of the present utility model.

[0029] Referring to the accompanying drawings, the back iron may include a laminated layer (20) and a plurality of mounting brackets (30). The plurality of mounting brackets are spaced apart to support the laminated layer (20), while the aluminum cover plate (10) is also fixed to the plurality of mounting brackets (30). That is, the laminated layer (20) is disposed above the plurality of mounting brackets (30) and below the aluminum cover plate (10), which is fixed to the plurality of mounting brackets (30).

[0030] More specifically, the mounting bracket (30) includes two L-shaped sub-braces (31), a central support (32), and two supports (33). The central support (32) is a horizontal beam connected between the two L-shaped sub-braces (31), for example, by welding. The top surface of the central support (32) is lower than the top of the vertical portion of the two L-shaped sub-braces (31), thus forming a recess to facilitate the placement of the laminated layer (20), for example, the laminated layer (20) can be welded to the central support (32).

[0031] The L-shaped bracket (31) includes a horizontal portion and a vertical portion, which can be, for example, a large angle steel. A fixing hole (311) is formed on the horizontal portion for fixing to the sleeper rail, for example, by bolts. Two supports (33) are in the shape of a "┐", with their vertical portions fixed to the upper outer wall of the vertical portion of the L-shaped bracket (31) (e.g., by welding), and their horizontal portions having fixing grooves (331) for fixing the aluminum cover plate (10).

[0032] The laminated layer can be composed of 9 to 16 square or flat steel bars stacked together. It uses low-carbon structural steel with high magnetic permeability, which plays a role in stabilizing the magnetic field. The laminated layer (20) is welded to the central support (32). The required thickness of the laminated layer varies for motors with different thrusts. Therefore, the welding height can be flexibly adjusted. At the same time, the spacing between sleepers on the track also varies. The welding spacing can also be flexibly adjusted according to the sleeper spacing. In addition, the mounting bracket of this invention is a split bracket with a short length and a single welding position. Welding will not cause excessive deformation.

[0033] After the laminated layer (20) is fixed to the central support (32), the aluminum cover plate (10) can be fixed to the entire back iron. More specifically, the aluminum cover plate (10) is thicker on both sides, forming a structure for connection and fixation, as described above. The screw head of the screw can be inserted into the cavity of this structure of the aluminum cover plate (10), and then the screw can be inserted into the fixing groove (331) of the support (33), and then tightened with a nut, thereby fixing the aluminum cover plate (10) to the entire back iron. It should be understood that insulation treatment can be performed between the aluminum cover plate (10) and the back iron during installation, a process well known in the art and will not be described in detail here.

[0034] The embodiments of this utility model have been described above by way of example, but this utility model is not limited to the embodiments described above. The basic idea of ​​this utility model lies in the above basic solution. For those skilled in the art, designing various modified models, formulas, and parameters based on the teachings of this utility model does not require creative effort. Changes, modifications, substitutions, and variations made to the embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A linear motor induction plate for rail transit, comprising a back iron and an aluminum cover plate disposed on the back iron, characterized in that, Multiple parallel V-shaped grooves (11) are formed on the upper surface of the aluminum cover plate (10), and the cross section of each V-shaped groove (11) is trapezoidal.

2. The linear motor induction plate for rail transit according to claim 1, characterized in that, It also includes an insulating film disposed between the aluminum cover plate (10) and the back iron to prevent electrical connection between the two.

3. The linear motor induction plate for rail transit according to claim 2, characterized in that, The insulating film is selected from alkali-free glass fiber cloth and Teflon cloth.

4. The linear motor induction plate for rail transit according to claim 1, characterized in that, The back iron includes a laminated layer (20) and a plurality of mounting brackets (30). The laminated layer (20) is disposed above the plurality of mounting brackets (30) and below the aluminum cover plate (10). The aluminum cover plate (10) is fixed on the plurality of mounting brackets (30).

5. The linear motor induction plate for rail transit according to claim 4, characterized in that, The laminated layer (20) is composed of multiple square or flat steel bars stacked together.

6. The linear motor induction plate for rail transit according to claim 4, characterized in that, The mounting bracket (30) includes two L-shaped sub-branch (31), a central support (32) connecting the two L-shaped sub-branch (31), and two supports (33) respectively fixed on the outer side wall of the vertical part of the two L-shaped sub-branch (31), wherein the top surface of the central support (32) is lower than the top of the vertical part of the two L-shaped sub-branch (31).

7. The linear motor induction plate for rail transit according to claim 6, characterized in that, The L-shaped bracket (31) is made of large angle steel.

8. The linear motor induction plate for rail transit according to claim 6, characterized in that, The laminated layer (20) is fixed on the central support (32), and the aluminum cover plate (10) is fixed on both sides on two supports (33), thereby fixing it to the mounting bracket (30).

9. The linear motor induction plate for rail transit according to claim 6, characterized in that, A fixing hole (311) is formed on the horizontal part of the L-shaped bracket (31).

10. The linear motor induction plate for rail transit according to claim 6, characterized in that, The support (33) is in the shape of "┐", with the vertical part fixed on the L-shaped bracket (31) and the horizontal part having a fixing groove (331) for fixing the aluminum cover plate (10).

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