Pre-deflection compensation tool for suspension electromagnet

Abstract

The utility model discloses a pre-deflection compensation tool for a suspension electromagnet. The pre-deflection compensation tool comprises a pre-deflection transition plate laid on the surface of a stator iron core and a magnet overturning frame used for supporting the suspension electromagnet to overturn. A deflection compensation curved surface is formed on one side, deviating from the stator core, of the pre-deflection transition plate; when the magnet overturning frame drives all the magnetic poles of the suspension electromagnet to overturn to abut against the deflection compensation curved surface, the deflection compensation curved surface adjusts the positions of all the magnetic poles so that all the magnetic poles can be distributed along the deflection compensation curved surface, and therefore deflection generated by deformation of the suspension electromagnet can be compensated through the pre-deflection transition plate. The upper surface of the suspension electromagnet is always kept in a horizontal state when a vehicle works normally, the influence on the suspension gap is eliminated, the adjustment precision of the suspension gap is higher, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of suspended electromagnet production, in particular to a suspended electromagnet pre-deflection compensation tool. Background Art

[0002] Maglev trains are equipped with levitation electromagnets, but their traction system is located on the tracks rather than on the train itself. Linear motors on the tracks propel the train forward, enabling it to reach speeds exceeding 600 km / h. Maglev trains structurally cling to the track beams, preventing derailment and ensuring high safety and reliability. Furthermore, maglev rail eliminates the noise and vibration associated with conventional wheel-rail contact, making it environmentally friendly and bridging the travel speed gap between aviation and high-speed rail passenger transport.

[0003] The levitation electromagnet, a core component of a maglev train, generates a controllable electromagnetic field when energized. This attracts the stator core of the long-stator linear motor on the track, lifting the train upward and levitating it above the track. A sensor measures the actual levitation gap in real time and transmits it to the levitation controller. The controller uses a closed-loop control method to maintain an 8-10mm levitation gap between the maglev train and the track by controlling the levitation excitation current. However, as the levitation electromagnet is attracted upward by the stator core, the attraction causes the electromagnet to deform upward, affecting the adjustment of the levitation gap and posing a threat to driving safety. Utility Model Content

[0004] The purpose of the utility model is to provide a suspension electromagnet pre-deflection compensation tooling, which solves the existing technical problem that the deformation of the suspension electromagnet caused by the magnetic attraction force of the stator core affects the suspension gap and thus threatens driving safety by reserving the deflection in the reverse direction.

[0005] To achieve the above-mentioned objectives, the utility model provides a pre-deflection compensation tooling for a suspended electromagnet, comprising a pre-deflection transition plate laid on the surface of a stator core and a magnet flipping frame for supporting the flipping of the suspended electromagnet; a deflection compensation curved surface is formed on the side of the pre-deflection transition plate facing away from the stator core; when the magnet flipping frame drives all the magnetic poles of the suspended electromagnet to flip until they are in contact with the deflection compensation curved surface, the deflection compensation curved surface adjusts the positions of all the magnetic poles so that all the magnetic poles are distributed along the deflection compensation curved surface.

[0006] Preferably, the cross-sectional shape of the deflection compensation curved surface is a normal curve.

[0007] Preferably, a positioning plane is formed on a side of the pre-deflection transition plate facing the stator core, and the positioning plane abuts against the surface of the stator core.

[0008] Preferably, the invention further comprises a transition plate positioning fixture for defining the position of the pre-deflected transition plate.

[0009] Preferably, the transition plate positioning fixture comprises:

[0010] a first pressing head and a second pressing head respectively arranged along the diagonal direction of the pre-deflected transition plate;

[0011] a first pressing cylinder fixedly connected to the first pressing head and used for driving the first pressing head to extend and retract in the vertical direction to compress the pre-deflected transition plate;

[0012] A second pressing cylinder is fixedly connected to the second pressing head and is used to drive the second pressing head to extend and retract in the vertical direction to compress the pre-deflected transition plate.

[0013] Preferably, the magnet flip frame comprises:

[0014] A first support column and a second support column fixedly arranged in a vertical direction and parallel to each other;

[0015] A first flip seat rotatably arranged on the top of the first support column;

[0016] A second flip seat rotatably arranged on the top of the second support column;

[0017] When the levitation electromagnet is fixedly connected between the first flip seat and the second flip seat, the first flip seat and the second flip seat rotate synchronously to drive the levitation electromagnet to rotate around the horizontal direction.

[0018] Preferably, both the first support column and the second support column are vertical telescopic cylinders.

[0019] Preferably, the magnet flip frame further comprises:

[0020] A protective box fixedly mounted on the top of the first support column;

[0021] A bevel gear set fixedly arranged in the protective box and fixedly connected to the first flip shaft provided on the first flip seat;

[0022] A turning drive motor fixedly mounted in the protective box and connected to the bevel gear set;

[0023] A second rotating sleeve is fixedly arranged on the top of the second supporting column and is rotationally matched with the second turning shaft arranged on the second turning seat.

[0024] Preferably, the bevel gear set comprises:

[0025] a driven bevel gear coaxially connected to the first flip shaft;

[0026] A driving bevel gear meshes with the driven bevel gear and is fixedly connected to the output shaft of the flip drive motor.

[0027] Preferably, it also includes:

[0028] A rotation angle detection component is used to detect the flip angle of the flip drive motor;

[0029] The angle detection element and the flip drive motor are both connected to a controller, and the controller is used to control the flip drive motor to stop when the flip drive motor rotates a preset angle according to a signal fed back by the angle detection element.

[0030] Compared with the background technology, the present invention designs a set of pre-deflection compensation tooling for a suspended electromagnet, including a pre-deflection transition plate and a magnet flip frame. During assembly, the pre-deflection transition plate is first laid on the surface of the stator core, and then the magnet flip frame is rotated. The magnet flip frame drives the suspended electromagnet to rotate. When all the magnetic poles of the suspended electromagnet flip to offset the deflection compensation surface of the pre-deflection transition plate, the deflection compensation surface adjusts the positions of all the magnetic poles by relying on its own special structure, so that all the magnetic poles are distributed along the deflection compensation surface. In this way, the pre-deflection transition plate can be used to compensate for the deflection caused by the deformation of the suspended electromagnet, ensuring that the upper surface of the suspended electromagnet always remains horizontal when the vehicle is working normally, eliminating the impact on the suspension gap, and the adjustment accuracy of the suspension gap is higher, which is conducive to improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0032] Figure 1 A state diagram of the suspension electromagnet pre-deflection compensation tool provided by an embodiment of the utility model when applying pre-deflection to the suspension electromagnet;

[0033] Figure 2 for Figure 1 Diagram of the state when the medium pre-deflection transition plate is laid on the stator core.

[0034] The reference numerals are as follows:

[0035] Stator core 1, pre-deflection transition plate 2, deflection compensation surface 21, suspension electromagnet 3, magnetic pole 31, magnet flip frame 4, first support column 41, second support column 42, first flip seat 43, second flip seat 44 and stator coil 5. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The embodiment of the utility model discloses a suspension electromagnet pre-deflection compensation tool, as shown in the attached Figure 1 As shown, it includes a pre-deflection transition plate 2 and a magnet flip frame 4. The pre-deflection transition plate 2 is laid on the surface of the stator core 1, and the stator coil 5 is wound on the surface of the stator core 1. It should be noted that the surface of the stator core 1 is formed with a groove structure for accommodating the stator coil 5, ensuring that the pre-deflection transition plate 2 is attached to the surface of the stator core 1.

[0039] The pre-deflection transition plate 2 is formed with a deflection compensation curved surface 21 on the side away from the stator core 1. Figure 2 As shown, the deflection-compensating curved surface 21, leveraging its structural peculiarities, adjusts the arrangement of all magnetic poles 31 of the levitation electromagnet 3, resulting in an upwardly concave curved surface on the bottom surfaces of all flipped magnetic poles 31. This reversed pre-deflection eliminates the actual deformation of the levitation electromagnet 3 during operation, ensuring that the upper surface of the levitation electromagnet 3 remains horizontal during normal vehicle operation. In a preferred embodiment, the length of the pre-deflection transition plate 2 is equal to the length of the levitation electromagnet 3, ensuring that the pre-deflection transition plate 2 completely covers the stator core 1.

[0040] The magnet flip frame 4 is used to support the flipping of the levitation electromagnet 3. During assembly, the pre-deflection transition plate 2 is first laid on the surface of the stator core 1. The magnet flip frame 4 is then rotated, which drives the levitation electromagnet 3 to rotate. When all the magnetic poles 31 of the levitation electromagnet 3 flip to abut against the deflection compensation surface 21 of the pre-deflection transition plate 2, the deflection compensation surface 21, relying on its unique structure, adjusts the position of all the magnetic poles 31 so that all the magnetic poles 31 are distributed along the deflection compensation surface 21. In this way, the pre-deflection transition plate 2 can compensate for the deflection caused by the deformation of the levitation electromagnet 3, ensuring that the upper surface of the levitation electromagnet 3 remains horizontal during normal vehicle operation, eliminating the impact on the suspension gap. The suspension gap is adjusted with higher precision, which helps improve driving safety.

[0041] The cross-sectional shape of the deflection-compensating surface 21 is a normal curve, characterized by being high in the middle and low at both ends. When riveting the levitation electromagnet 3, the lower surfaces of all the magnetic poles 31 of the inverted levitation electromagnet 3 form an upwardly concave surface. This pre-deflection adjustment of the levitation electromagnet 3 during production ensures that the upper surface of the levitation electromagnet 3 remains horizontal during normal vehicle operation, eliminating any impact on the levitation gap. It is important to note that the raised portion of the deflection-compensating surface 21 is located at the center, directly opposite the center of the lower surface of the levitation electromagnet 3.

[0042] A positioning plane is formed on the side of the pre-deflection transition plate 2 facing the stator core 1, and the positioning plane is in contact with the surface of the stator core 1, so that the pre-deflection transition plate 2 is placed with the surface of the stator core 1 as a reference, avoiding the pre-deflection transition plate 2 from causing secondary installation errors to the suspended electromagnet 3 due to deformation due to warping, which is conducive to improving the installation accuracy.

[0043] The suspended electromagnet pre-deflection compensation tooling also includes a transition plate positioning fixture, which is used to limit the position of the pre-deflection transition plate 2. During the riveting process, it prevents the convex part of the deflection compensation surface 21 from being misaligned with the center of the lower surface of the suspended electromagnet 3 due to the pre-deflection transition plate 2 not being firmly fixed, thereby effectively improving the installation accuracy of the suspended electromagnet 3.

[0044] The transition plate positioning fixture includes a first pressing head, a second pressing head, a first pressing cylinder and a second pressing cylinder. The first pressing head and the second pressing head are respectively arranged along the diagonal direction of the pre-deflected transition plate 2. The first pressing cylinder is fixedly connected to the first pressing head and is used to drive the first pressing head to extend and retract in the vertical direction so that the first pressing head is pressed against or away from the pre-deflected transition plate 2. The second pressing cylinder is fixedly connected to the second pressing head and is used to drive the second pressing head to extend and retract in the vertical direction so that the second pressing head is pressed against or away from the pre-deflected transition plate 2. The first pressing cylinder and the second pressing cylinder can specifically be hydraulic cylinders. Of course, the structure of the transition plate positioning fixture is not limited to this.

[0045] The magnet flip frame 4 includes a first support column 41, a second support column 42, a first flip seat 43 and a second flip seat 44. The first support column 41 and the second support column 42 are parallel to each other and both are fixed in the vertical direction, mainly playing a supporting role. The first flip seat 43 can be rotatably arranged on the top of the first support column 41 and is fixedly connected to the first end of the levitation electromagnet 3. The second flip seat 44 can be rotatably arranged on the top of the second support column 42 and is fixedly connected to the second end of the levitation electromagnet 3. When the levitation electromagnet 3 is fixed between the first flip seat 43 and the second flip seat 44, the first flip seat 43 and the second flip seat 44 rotate synchronously to drive the levitation electromagnet 3 to rotate in the horizontal direction, so that all the magnetic poles 31 of the levitation electromagnet 3 are flipped downward and opposite to the stator core 1.

[0046] Both the first support column 41 and the second support column 42 are vertical telescopic cylinders used to adjust the height of the suspension electromagnet 3, ensure that the suspension electromagnet 3 and the pre-deflection transition plate 2 are aligned, and ensure that the squeezing force between the suspension electromagnet 3 and the pre-deflection transition plate 2 is appropriate to prevent damage to the suspension electromagnet 3 and the pre-deflection transition plate 2 due to excessive squeezing force. The vertical telescopic cylinder can be a hydraulic cylinder.

[0047] As a preferred embodiment, the magnet flip frame 4 further comprises a protective housing, a bevel gear set, a flip drive motor, and a second rotating sleeve. The protective housing is fixed to the top of the first support column 41, and the bevel gear set is fixed within the protective housing to achieve dustproof purposes. The first flip seat 43 is integrally provided with a first flip shaft at the end away from the levitation electromagnet 3. The bevel gear set is fixedly connected to the first flip shaft. The flip drive motor is fixed to the top of the protective housing and is fixedly connected to the bevel gear set, so that the torque of the flip drive motor is transmitted to the first flip shaft through the bevel gear set, causing the first flip seat 43 to drive the levitation electromagnet 3 to flip. The second flip seat 44 is integrally provided with a second flip shaft at the end away from the levitation electromagnet 3. The second rotating sleeve is fixed to the top of the second support column 42, and the second rotating sleeve rotates in conjunction with the second flip shaft, so that the second flip seat 44 rotates synchronously with the first flip seat 43 under the drive of the levitation electromagnet 3. A bearing is provided between the second rotating sleeve and the second flip shaft to support the second flip shaft for rotation relative to the second rotating sleeve, preventing severe wear of the second rotating sleeve and the flip shaft due to rigid friction, thereby extending the service life of both.

[0048] The bevel gear set includes a driven bevel gear and a driving bevel gear. The driven bevel gear is arranged horizontally and coaxially connected to the first tilting shaft. The driving bevel gear is arranged vertically. The top of the driving bevel gear is fixedly connected to the output shaft of the tilting drive motor. The driving bevel gear and the driven bevel gear mesh together, so that the torque output by the tilting drive motor is transmitted to the driven bevel gear via the driving bevel gear, and then transmitted to the first tilting seat 43 by the driven bevel gear. In the present utility model, the tilting of the suspension electromagnet 3 adopts a bevel gear transmission mechanism, which has high transmission accuracy and provides reliable support for automatically controlling the start and stop of the tilting drive motor.

[0049] The suspension electromagnet pre-deflection compensation fixture also includes an angle detection component, which is used to detect the flip angle of the flip drive motor. Specifically, the angle detection component can be an encoder. Both the angle detection component and the flip drive motor are connected to a controller. When all the magnetic poles 31 of the suspension electromagnet 3 flip to contact the pre-deflection transition plate 2, the angle detection component detects that the flip drive motor has rotated to a preset angle. The angle detection component then feeds back a signal to the controller. After determining and processing the signal, the controller sends a signal to the flip drive motor to automatically stop the flip drive motor, preventing the suspension electromagnet 3 from being excessively out of position and affecting installation accuracy.

[0050] It should be noted that the controller should include a signal receiving part, a signal judging part and a signal sending part. The signal receiving part is used to receive the electrical signal sent by the detection part such as the angle detection part. The signal judging part and the signal receiving part are electrically connected so that the signal judging part can judge whether the signal received by the signal receiving part is a trigger signal. The signal sending part and the signal judging part are electrically connected so that the signal sending part can send the judgment signal generated by the signal judging part to the execution part such as the flip drive motor. The specific setting method of the signal receiving part, the signal judging part and the signal sending part can refer to the existing technology; in the present utility model, only the application scenarios of the above three parts are changed, and no substantial improvement is made to them. Obviously, controllers with this structure are widely used in existing automatic control equipment, such as MCU, DSP or single-chip microcomputer. The key point of the present utility model is that the controller combines the angle detection part and the flip drive motor.

[0051] The suspension electromagnet pre-deflection compensation fixture further includes a support platform for supporting the stator core 1 .

[0052] 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.

[0053] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A suspended electromagnet pre-deflection compensation tool, characterized in that: The invention comprises a pre-deflection transition plate (2) laid on the surface of a stator core (1) and a magnet flipping frame (4) for supporting the flipping of a levitation electromagnet (3); a deflection compensation curved surface (21) is formed on the side of the pre-deflection transition plate (2) facing away from the stator core (1); when the magnet flipping frame (4) drives all the magnetic poles (31) of the levitation electromagnet (3) to flip to abut against the deflection compensation curved surface (21), the deflection compensation curved surface (21) adjusts the positions of all the magnetic poles (31) so that all the magnetic poles (31) are distributed along the deflection compensation curved surface (21).

2. The suspended electromagnet pre-deflection compensation tooling according to claim 1 is characterized in that: The cross-sectional shape of the deflection compensation curved surface (21) is a normal curve.

3. The suspended electromagnet pre-deflection compensation tool according to claim 1, characterized in that: A positioning plane is formed on the side of the pre-deflection transition plate (2) facing the stator core (1), and the positioning plane abuts against the surface of the stator core (1).

4. The suspended electromagnet pre-deflection compensation fixture according to any one of claims 1 to 3, characterized in that: It also includes a transition plate positioning fixture for limiting the position of the pre-deflected transition plate (2).

5. The suspended electromagnet pre-deflection compensation tooling according to claim 4, characterized in that: The transition plate positioning fixture includes: A first pressing head and a second pressing head respectively arranged along the diagonal direction of the pre-deflected transition plate (2); A first pressing cylinder fixedly connected to the first pressing head and used to drive the first pressing head to extend and retract in a vertical direction to compress the pre-deflected transition plate (2); A second pressing cylinder is fixedly connected to the second pressing head and is used to drive the second pressing head to extend and retract in a vertical direction to compress the pre-deflected transition plate (2).

6. The suspended electromagnet pre-deflection compensation fixture according to any one of claims 1 to 3, characterized in that: The magnet flip frame (4) comprises: A first support column (41) and a second support column (42) fixedly arranged in a vertical direction and parallel to each other; A first flip seat (43) rotatably arranged on the top of the first support column (41); A second flip seat (44) rotatably arranged on the top of the second support column (42); When the levitation electromagnet (3) is fixedly connected between the first flip seat (43) and the second flip seat (44), the first flip seat (43) and the second flip seat (44) rotate synchronously to drive the levitation electromagnet (3) to rotate in a horizontal direction.

7. The suspended electromagnet pre-deflection compensation tool according to claim 6, characterized in that: Both the first support column (41) and the second support column (42) are vertical telescopic cylinders.

8. The suspended electromagnet pre-deflection compensation tool according to claim 6, characterized in that: The magnet flip frame (4) also includes: a protective box fixedly mounted on the top of the first support column (41); A bevel gear set fixedly arranged in the protective box and fixedly connected to a first flip shaft provided on the first flip seat (43); a flip drive motor fixedly mounted on the protective box and connected to the bevel gear set; A second rotating sleeve is fixedly arranged on the top of the second support column (42) and is rotationally matched with a second flip shaft provided on the second flip seat (44).

9. The suspended electromagnet pre-deflection compensation tool according to claim 8, characterized in that: The bevel gear set comprises: a driven bevel gear coaxially connected to the first flip shaft; A driving bevel gear meshes with the driven bevel gear and is fixedly connected to the output shaft of the flip drive motor.

10. The suspended electromagnet pre-deflection compensation tool according to claim 8, characterized in that: Also includes: A rotation angle detection member, the rotation angle detection member is used to detect the flip angle of the flip drive motor; The rotation angle detection element and the flip drive motor are both connected to a controller, and the controller is used to control the flip drive motor to stop when the flip drive motor rotates a preset rotation angle according to a signal fed back by the rotation angle detection element.

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