A maglev elevator towed by a linear synchronous motor

Abstract

The present invention discloses a maglev elevator driven by a linear synchronous motor, which comprises an elevator shaft, a car and a linear synchronous motor. An elevator door is arranged on the front shaft wall of the elevator shaft, and a pair of parallel and spaced H-shaped rails are fixed on the rear shaft wall. The linear synchronous motor comprises a motor long stator winding and a motor mover arranged opposite thereto. The motor long stator winding is fixed on the rear shaft wall and is located between the pair of H-shaped rails. The motor mover is fixed on the panel of the car facing the rear shaft wall, and the motor long stator winding is connected to a traction control system. The motor mover interacts with the energized motor long stator winding. A first electromagnet is installed on the upper part of the car, and a second electromagnet is installed on the lower part thereof. The first electromagnet and the second electromagnet are respectively connected to a suspension controller, and the first electromagnet and the second electromagnet respectively generate opposite suction forces with the H-shaped rails. It has the advantages of high running speed, low noise and less maintenance workload.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of elevators. Specifically, it relates to a maglev elevator driven by a linear synchronous motor. Background Art

[0002] Elevators are closely related to and inseparable from people's lives today. An elevator refers to the general term for vertical transportation tools in a building that serve several specific floors in the building. Existing elevators mainly achieve the up and down movement of the elevator car through steel cables, which not only have low speed, high noise, but also require a large amount of maintenance work. Chinese Patent with Application No. 201922136583.1 discloses a cordless elevator driven by a linear switched reluctance motor, which solves the technical problems of low elevator speed and high noise to a certain extent, but the device components are cumbersome and the equipment volume is relatively large. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a maglev elevator driven by a linear synchronous motor, which can solve the defects of existing elevators such as low running speed, high noise, large equipment volume, and cumbersome components.

[0004] A maglev elevator driven by a linear synchronous motor provided by the present invention includes an elevator shaft, a car arranged in the elevator shaft, and a linear synchronous motor for pulling the car up and down. An elevator door is arranged on the front shaft wall of the elevator shaft, and a pair of parallel and spaced H-shaped rails are fixed on the rear shaft wall of the elevator shaft. The linear synchronous motor includes a motor long stator winding and a motor mover arranged opposite to it. The motor long stator winding is fixed on the rear shaft wall and is located between a pair of H-shaped rails, and the motor long stator winding is connected to a traction control system. The motor mover is fixed on the panel of the car facing the rear shaft wall. The motor mover interacts with the energized motor long stator winding to provide traction force for the car. A first electromagnet is installed on the upper part of the car, and a second electromagnet is installed on the lower part of the car. The first electromagnet and the second electromagnet are respectively connected to a suspension controller, and the first electromagnet and the second electromagnet respectively generate opposite suction forces with the H-shaped rail to provide suspension force for the car.

[0005] Further, a support arm is arranged at the lower part of the car, and the second electromagnet is installed on the support arm.

[0006] Further, a pair of the H-shaped rails are symmetrically arranged on both sides of the motor long stator winding.

[0007] Further, the motor long stator winding is composed of an iron core and a winding coil. The winding coil is wound around the iron core, and the motor long stator winding is fixed on the rear shaft wall through the iron core.

[0008] Furthermore, the number of the first electromagnets is two, which are symmetrically arranged at the upper part of the car respectively; and / or, the number of the second electromagnets is two, which are symmetrically arranged at the lower part of the car respectively.

[0009] Furthermore, the maglev elevator towed by the linear synchronous motor further includes a support member for supporting the H-shaped track and the motor long stator winding. The support member is fixed on the rear shaft wall of the elevator shaft, and the motor long stator winding is installed at the central part of the support member.

[0010] Furthermore, the motor mover is installed at the central position on the panel of the car facing the rear shaft wall.

[0011] Furthermore, the motor mover is composed of a plurality of permanent magnets arranged in the order of NS in sequence.

[0012] Furthermore, the first electromagnet generates a suction force pointing to the rear shaft wall of the elevator shaft on the side of the H-shaped track close to the car, and the second electromagnet generates a suction force deviating from the rear shaft wall of the elevator shaft on the side of the H-shaped track close to the rear shaft wall of the elevator shaft.

[0013] Furthermore, the maglev elevator towed by the linear synchronous motor further includes a suspension sensor and a chopper connected to the suspension controller. The suspension sensor is installed between the first electromagnet and the H-shaped track, and between the second electromagnet and the H-shaped track, for measuring the suspension gap; the chopper is also connected to the first electromagnet and the second electromagnet respectively.

[0014] The maglev elevator of the present invention includes an elevator shaft, a car disposed in the elevator shaft, and a linear synchronous motor for pulling the car up and down. An elevator door is provided on the front shaft wall of the elevator shaft, and a pair of parallel and spaced H-shaped rails are fixed on the rear shaft wall of the elevator shaft. The linear synchronous motor includes a motor long stator winding and a motor mover disposed opposite thereto. The motor long stator winding is fixed on the rear shaft wall and is located between a pair of H-shaped rails. The motor mover is fixed on the panel of the car facing the rear shaft wall, and the motor long stator winding is connected to a traction control system. The motor mover interacts with the energized motor long stator winding to provide traction for the car. A first electromagnet is installed on the upper part of the car, and a second electromagnet is installed on the lower part thereof. The first electromagnet and the second electromagnet are respectively connected to a suspension controller, and the first electromagnet and the second electromagnet respectively generate opposite suction forces with the H-shaped rail to provide suspension force for the car. Compared with the prior art, the present invention adopts a pair of H-shaped rails to achieve the lateral self-stabilization of the car, and based on the maglev principle, the car is suspended in the air by the first electromagnet and the second electromagnet to achieve torque balance. At the same time, the linear synchronous motor is used for traction, reducing the mass of the car and improving the motor efficiency, which can greatly increase the running speed of the elevator, and has the advantages of high running speed, low noise and less maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0016] Figure 1 is a schematic structural diagram of a maglev elevator pulled by a linear synchronous motor according to an embodiment of the present invention;

[0017] Figure 2 is Figure 1 a sectional view;

[0018] Figure 3 is Figure 1 a top view of.

[0019] Description of the reference numerals:

[0020] Elevator shaft - 1, Car - 2

[0021] Elevator door - 3, H-shaped rail - 4

[0022] Motor long stator winding - 5, Motor mover - 6

[0023] First electromagnet - 7, Second electromagnet - 8

[0024] Support arm - 9, Suspension controller - 10

[0025] Winding coil - 51 Iron core - 52 Detailed implementation mode

[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] In the present invention, the terms "first" and "second" are mainly used to distinguish different components, but do not specifically limit the components. In addition, the orientations used, such as "upper", "lower", "front", and "rear", are all Figure 1 based on the view shown. Upward perpendicular to the paper surface is the upper, downward perpendicular to the paper surface is the lower, rightward perpendicular to the paper surface is the rear, and leftward perpendicular to the paper surface is the front.

[0028] Such as Figures 1 to 3As shown in the figure, the maglev elevator of this embodiment includes an elevator shaft 1, a car 2, elevator doors 3, a linear synchronous motor, an H-shaped track 4, a traction control system, a first electromagnet 7, a second electromagnet 8, and a suspension controller 10. The linear synchronous motor includes a motor long stator winding 5 and a motor mover 6 disposed opposite thereto. Among them, the car 2 moves up and down in the elevator shaft 1 under the traction of the linear synchronous motor. The number of H-shaped tracks 4 is one pair. The pair of H-shaped tracks 4 are parallel to each other and fixedly installed on the rear wall of the elevator shaft 1 at intervals. The elevator doors 3 are disposed on the front wall of the elevator shaft 1. The motor long stator winding 5 is fixed on the rear wall and is located between the pair of H-shaped tracks 4. The motor mover 6 is fixed on the panel of the car 2 facing the rear wall. The elevator doors 3 are disposed facing the front wall of the elevator shaft 1, and the motor mover 6 is connected to the traction control system. The structure of the traction control system refers to the prior art. Under the control of the traction control system, an upward traction force is generated between the motor long stator winding 5 passing through current and the motor mover 6 on the car 2, so as to realize the upward operation of the elevator. When the car 2 needs to move downward, the car 2 moves downward under the action of gravity. The linear synchronous motor generates a braking force under the action of the traction control system to control the car 2 to move downward at a set speed. At the same time, a first electromagnet 7 is installed on the upper part of the car 2, and a second electromagnet 8 is installed on its lower part. The aforementioned suspension controller 10 is respectively connected to the first electromagnet 7 and the second electromagnet 8, and the first electromagnet 7 and the second electromagnet 8 respectively generate opposite suction forces with the H-shaped track to provide a suspension force for the car 2. It should be noted that the suspension forces generated by the first electromagnet 7 and the second electromagnet 8 make the car 2 have no contact with the elevator shaft 1. Preferably, under the action of the suspension controller 10, the first electromagnet 7 generates a suction force pointing to the rear wall of the elevator shaft 1 with the side of the H-shaped track 4 close to the car 2; under the action of the suspension controller 10, the second electromagnet 8 generates a suction force deviating from the rear wall of the elevator shaft 1 with the side of the H-shaped track 4 close to the rear wall of the elevator shaft 1. These two forces achieve moment balance under the action of the traction control system, so that the first electromagnet 7 and the second electromagnet 8 respectively maintain a rated suspension gap with the surface of the H-shaped track 4, and further make the entire car 2 break away from the H-shaped track 4 to ensure the non-contact operation of the car 2. At the same time, in the horizontal direction, when the first electromagnet 7 and the second electromagnet 8 have a lateral offset with the H-shaped track 4, the guiding force generated by the offset makes the first electromagnet 7 and the second electromagnet 8 move in the direction opposite to the offset, thereby realizing the lateral self-stabilization of the car 2.

[0029] In Figure 1 and Figure 3 In the embodiment shown, the number of the first electromagnets 7 is two, which are symmetrically disposed on the upper part of the car 2 respectively; and / or, the number of the second electromagnets 8 is two, which are symmetrically disposed on the lower part of the car 2 respectively. It should be clear that the first electromagnet 7 and the second electromagnet 8 can also be more, and they can all achieve the technical effects of the present invention.

[0030] As a preferred embodiment of the present invention, the maglev elevator of the present invention further includes a support arm 9 and a support member. Among them, the support arm 9 is used to install the second electromagnet 8, which is arranged at the lower part of the car 2; the support member is used to support the H-shaped track 4 and the motor long stator winding 5, and it is fixed on the rear wall of the elevator shaft 1. Specifically, the motor long stator winding 5 is installed at the central part of the support member, and a pair of H-shaped tracks 4 are installed on the support member and symmetrically arranged on both sides of the motor long stator winding 5. The motor mover 6 is installed at the central position on the panel of the car 2 facing the rear wall. Preferably, the motor mover 6 is composed of a plurality of permanent magnets arranged in the NS order in sequence.

[0031] Meanwhile, as Figure 2 and Figure 3 shown, the motor long stator winding 5 is composed of an iron core 52 and a winding coil 51. The winding coil 51 is wound around the iron core 52. Specifically, the motor long stator winding 5 is fixed on the rear wall through the iron core 52. It should be noted that the iron core 52 is composed of a plurality of laminations stacked together.

[0032] In addition, in a further technical solution, the above maglev elevator further includes a suspension sensor and a chopper connected to the suspension controller 10. At this time, the suspension controller 10, the suspension sensor, the chopper, the first electromagnet 7 and the second electromagnet 8 together constitute the suspension control system of the maglev elevator of the present invention. The suspension sensor is installed between the first electromagnet 7 and the H-shaped track 4, and between the second electromagnet 8 and the H-shaped track 4, and is used to measure the suspension gap; the chopper is also respectively connected to the first electromagnet 7 and the second electromagnet 8. The suspension sensor measures the gap (suspension gap) between the electromagnet and the H-shaped track. The suspension controller 10 receives the suspension sensor signal (i.e., the suspension gap measured by the suspension sensor), obtains the electromagnet coil current through a preset suspension control algorithm, and outputs it to the first electromagnet 7 and the second electromagnet 8 respectively through the chopper to achieve the stable suspension of the first electromagnet 7 and the second electromagnet 8.

[0033] In summary, in the present invention, a pair of H-shaped rails 4 are fixed on the rear well wall of the elevator shaft 1. A first electromagnet 7 is installed on the upper part of the car 2. Under the action of the suspension controller 10, a suction force is generated with the rails on the outer side of the H-shaped rail 4, and the direction of the suction force points to the rear well wall of the elevator shaft 1. A support arm 9 is arranged at the lower part of the car 2, and a second electromagnet 8 is installed on the support arm 9. Under the action of the suspension controller 10, the second electromagnet 8 generates a suction force with the rails on the inner side of the H-shaped rail 4, and the direction of the suction force deviates from the rear well wall of the elevator shaft 1. These two forces achieve moment balance, so that the car 2 is stably suspended. In addition, when the car 2 has a lateral offset relative to the H-shaped rail 4, the first electromagnet 7 and the second electromagnet 8 are offset relative to the H-shaped rail 4, and the first electromagnet 7 and the second electromagnet 8 generate a guiding force to make the car 2 return to the central position, realizing the lateral self-stability of the car 2 and the guiding of the first electromagnet 7 and the second electromagnet 8 to the car 2. At the same time, in the present invention, the motor long stator winding 5 is used as the long stator of the linear synchronous motor, and several permanent magnets arranged in the NS order in sequence are used as the mover of the linear synchronous motor. Under the control of the traction control system, an upward traction force is generated between the motor long stator winding 5 passing through the current and the motor mover 6 on the car 2, so as to realize the upward operation of the elevator. When the car 2 needs to run downward, the car 2 runs downward under the action of gravity. The linear synchronous motor generates a braking force under the action of the traction control system to control the car 2 to run downward at a set speed, completing the traction of the linear synchronous motor to the maglev elevator. Compared with the prior art, it has the advantages of high running speed, low noise and less maintenance work.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A maglev elevator driven by a linear synchronous motor, comprising an elevator shaft (1), a car (2) arranged in the elevator shaft (1), and a linear synchronous motor for driving the car (2) to lift and lower, wherein an elevator door (3) is arranged on the front shaft wall of the elevator shaft (1), and is characterized in that, A pair of H-shaped rails (4) which are parallel to each other and spaced apart are fixed on the rear wall of the elevator shaft (1). The linear synchronous motor includes a motor long stator winding (5) and a motor mover (6) arranged opposite thereto. The motor long stator winding (5) is fixed on the rear wall and is located between a pair of H-shaped rails (4). The motor long stator winding (5) is connected to a traction control system. The motor mover (6) is fixed on the panel of the car (2) facing the rear wall. The motor mover (6) interacts with the energized motor long stator winding (5) to provide traction force for the car (2). A first electromagnet (7) is installed on the upper part of the car (2), and a second electromagnet (8) is installed on the lower part thereof. The first electromagnet (7) and the second electromagnet (8) are respectively connected to a suspension controller (10), and the first electromagnet (7) and the second electromagnet (8) respectively generate opposite suction forces with the H-shaped rails (4) to provide suspension force for the car (2). The maglev elevator driven by the linear synchronous motor further includes a suspension sensor and a chopper connected to the suspension controller (10). The suspension sensor is installed between the first electromagnet (7) and the H-shaped rail (4), and between the second electromagnet (8) and the H-shaped rail (4) to measure the suspension gap. The chopper is also respectively connected to the first electromagnet (7) and the second electromagnet (8). A support arm (9) is arranged at the lower part of the car (2), and the second electromagnet (8) is installed on the support arm (9).

2. The maglev elevator driven by a linear synchronous motor according to claim 1, characterized in that, A pair of the H-shaped rails (4) are symmetrically arranged on both sides of the motor long stator winding (5).

3. The maglev elevator towed by a linear synchronous motor according to claim 1, wherein The motor long stator winding (5) is composed of an iron core (52) and a winding coil (51). The winding coil (51) is wound around the iron core (52), and the motor long stator winding (5) is fixed on the rear wall through the iron core (52).

4. The maglev elevator towed by a linear synchronous motor according to claim 1, wherein The number of the first electromagnets (7) is two, which are symmetrically arranged on the upper part of the car (2) respectively; and / or, the number of the second electromagnets (8) is two, which are symmetrically arranged on the lower part of the car (2) respectively.

5. The maglev elevator towed by a linear synchronous motor according to any one of claims 1 to 4, characterized in that, It further includes a support member for supporting the H-shaped rails (4) and the motor long stator winding (5). The support member is fixed on the rear wall of the elevator shaft (1), and the motor long stator winding (5) is installed at the central part of the support member.

6. The maglev elevator towed by a linear synchronous motor according to claim 5, characterized in that, The motor mover (6) is installed at the central position on the panel of the car (2) facing the rear wall.

7. The maglev elevator driven by a linear synchronous motor according to claim 1, wherein The motor mover (6) is composed of a plurality of permanent magnets arranged in the order of NS in sequence.

8. The maglev elevator driven by a linear synchronous motor according to claim 1, characterized in that, The first electromagnet (7) generates a suction force pointing to the rear wall of the elevator shaft (1) with the side of the H-shaped rail (4) close to the car (2), and the second electromagnet (8) generates a suction force deviating from the rear wall of the elevator shaft (1) with the side of the H-shaped rail (4) close to the rear wall of the elevator shaft (1).

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