Magnetic levitation conveyor

Abstract

The application discloses a magnetic suspension conveying device, which comprises a base, a conveying belt, a linear induction motor, a first magnet group and a second magnet group. The conveying belt is sleeved outside the base and comprises a plurality of bearing plates, which are annularly distributed and connected through hinging. The linear induction motor is used for driving the conveying belt to rotate around the base and comprises an induction primary and an induction secondary. The induction primary is installed on the base, and the induction secondary is a bearing plate or is installed on the bearing plate. The first magnet group is used for applying a thrust away from the base to the bearing plate, and the second magnet group is used for applying a lateral thrust to the bearing plate. The second magnet group comprises two groups, and the two groups of the second magnet group are respectively located on the lateral sides of the bearing plate to limit the bearing plate on the lateral sides. Compared with the prior art, the magnetic suspension conveying device can reduce friction loss, thereby prolonging the service life of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying device, in particular to a magnetic levitation conveying device. BACKGROUND

[0002] In order to facilitate passengers, automatic sidewalks are usually set in places such as airports. The automatic sidewalks now generally adopt motor drive, drive through gear and chain transmission, and finally drive the tread board to move, which has large mechanical wear. SUMMARY

[0003] The purpose of the present application is to provide a magnetic levitation conveying device for reducing friction loss and prolonging the service life of the device.

[0004] In order to achieve the above purpose, the present application provides the following scheme:

[0005] The present application discloses a magnetic levitation conveying device, comprising:

[0006] a base;

[0007] a conveying belt sleeved outside the base, the conveying belt comprising a plurality of bearing plates, the plurality of bearing plates being annularly distributed, and two adjacent bearing plates being hingedly connected;

[0008] a linear induction motor for driving the conveying belt to rotate around the base, the linear induction motor comprising an induction primary and an induction secondary; the induction primary being installed on the base, and the induction secondary being the bearing plate or being installed on the bearing plate;

[0009] a first magnet group comprising a first magnet and a second magnet; the first magnet being annularly installed on the base, and the second magnet being installed on the side of the bearing plate close to the base; the mutually close parts of the first magnet and the second magnet repelling each other magnetically to exert a thrust on the bearing plate away from the base;

[0010] a second magnet group comprising a third magnet and a fourth magnet; the third magnet being installed on the base, and the fourth magnet being installed on the bearing plate; the mutually close parts of the third magnet and the fourth magnet repelling each other magnetically to exert a transverse thrust on the bearing plate; the second magnet group comprising two groups, and the two groups of the second magnet group being respectively located on the transverse two sides of the bearing plate to limit the bearing plate on the transverse two sides; the transverse direction being a horizontal direction perpendicular to the linear velocity direction of the bearing plate.

[0011] Preferably, the base comprises a vertical plate and a horizontal plate, the vertical plate comprising two and being opposite to each other, and the horizontal plate being located between the two vertical plates and being vertically and fixedly connected with the two vertical plates at the transverse two ends of the horizontal plate.

[0012] Preferably, the induction primary is mounted on the horizontal plate near the side of the bearing plate.

[0013] Preferably, the first magnet group comprises two groups, respectively supporting the two ends of the bearing plate in the transverse direction.

[0014] Preferably, the first magnets of the two first magnet groups are respectively mounted on the two vertical plates near the side of the vertical plate close to the bearing plate, and the second magnets of the two first magnet groups are respectively mounted on the two ends of the bearing plate in the transverse direction.

[0015] Preferably, the third magnets of the two second magnet groups are respectively mounted on the two vertical plates near the side of the vertical plate close to the other vertical plate.

[0016] Preferably, a support is mounted on the side of the bearing plate close to the base, and the fourth magnet is mounted on the support; the two ends of the bearing plate in the transverse direction are respectively provided with the fourth magnet to correspond to the third magnet on the two vertical plates.

[0017] Preferably, the horizontal plate comprises an upper horizontal plate on the upper side and a lower horizontal plate on the lower side, and the induction primary is mounted on the upper horizontal plate near the side of the bearing plate.

[0018] Preferably, the induction secondary is an aluminum plate mounted on the bearing plate, and the aluminum plate is located on the side of the bearing plate close to the base.

[0019] Preferably, the vertical plate is an oblong plate.

[0020] The present application has the following technical effects compared with the prior art:

[0021] After the induction primary is connected to the power supply, the induction secondary is moved to drive the entire conveyor belt to rotate around the base. The upper surface of the upper bearing plate is used to carry pedestrians or goods, realizing the conveying of pedestrians or goods. The first magnet group applies a pushing force to the bearing plate away from the base, avoiding the contact between the bearing plate and the base. The two second magnet groups respectively apply transverse forces in opposite directions to the bearing plate to limit the transverse position of the bearing plate. The magnetic levitation conveying device reduces mechanical wear during operation, thereby improving the operation efficiency, reducing the operation noise, and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0023] Fig. 1 Partially sectional view of the magnetic levitation conveying device in the front direction according to an embodiment of the present application;

[0024] Fig. 2 Partially sectional view of the magnetic levitation conveying device in the side direction according to an embodiment of the present application;

[0025] Legend: 1 - base; 2 - bearing plate; 101 - inductive primary; 102 - first magnet; 103 - third magnet; 201 - inductive secondary; 202 - hinge; 203 - second magnet; 204 - fourth magnet. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present application.

[0027] The purpose of the present application is to provide a magnetic levitation conveying device for reducing friction loss and prolonging the service life of the device.

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figs. 1-2 The present embodiment provides a magnetic levitation conveying device, which comprises a base 1, a conveying belt, a linear inductive motor, a first magnet group and a second magnet group.

[0030] The conveying belt is sleeved outside the base 1, and the conveying belt comprises a plurality of bearing plates 2 which are arranged in a ring shape and are connected by hinges 202. The bearing plates 2 can be used to carry pedestrians or carry goods such as luggage. The linear induction motor is used to drive the conveying belt to rotate around the base 1, and the linear induction motor comprises an induction primary 101 and an induction secondary 201. The induction primary 101 is installed on the base 1, and the induction secondary 201 is installed on the bearing plate 2. The induction primary 101 generates a traveling wave magnetic field after being connected to an alternating current power supply, thereby dragging the induction secondary 201 in the traveling wave magnetic field to move. The first magnet group comprises a first magnet 102 and a second magnet 203. The first magnet 102 is installed in a ring shape on the base 1, and the second magnet 203 is installed on the side of the bearing plate 2 close to the base 1. In this embodiment, the second magnet 203 is installed on each bearing plate 2. The first magnet 102 and the second magnet 203 repel each other in the magnetic field, thereby applying a pushing force to the bearing plate 2 to move away from the base 1. The second magnet group comprises a third magnet 103 and a fourth magnet 204. The third magnet 103 is installed on the base 1, and the fourth magnet 204 is installed on the bearing plate 2. The third magnet 103 and the fourth magnet 204 repel each other in the magnetic field, thereby applying a lateral pushing force to the bearing plate 2. The second magnet group comprises two groups, and the two groups of second magnets are located on the lateral sides of the bearing plate 2, thereby limiting the lateral position of the bearing plate 2. In this embodiment, the lateral direction is the horizontal direction perpendicular to the linear velocity direction of the bearing plate 2. Fig. 1 In the embodiment, the lateral direction is the direction perpendicular to the paper. Fig. 2 In the embodiment, the lateral direction is the left-right direction.

[0031] The working principle of the magnetic suspension conveying device is as follows:

[0032] After the induction primary 101 is connected to the power supply, the induction secondary 201 is dragged to move, thereby driving the entire conveying belt to rotate around the base 1. The upper surface of the upper bearing plate 2 is used to carry pedestrians or goods, thereby realizing the conveying of the pedestrians or goods. The first magnet group applies a pushing force to the bearing plate 2 to move away from the base 1, thereby avoiding the contact between the bearing plate 2 and the base 1. The two second magnet groups apply opposite lateral forces to the bearing plate 2, thereby limiting the lateral position of the bearing plate 2. The magnetic suspension conveying device reduces mechanical wear during operation, thereby improving the operation efficiency, reducing the operation noise, and prolonging the service life.

[0033] As a possible example, in this embodiment, the base 1 comprises a vertical plate and a horizontal plate. The vertical plate comprises two vertical plates which are located opposite to each other, and the horizontal plate is located between the two vertical plates. The horizontal plate is vertically and fixedly connected to the two vertical plates at the lateral ends of the horizontal plate. Specifically, the vertical plate is a long circular plate, and the two ends of the vertical plate are semicircular, and the middle part of the vertical plate is rectangular. According to different actual needs, other forms of the base 1 can also be selected by those skilled in the art.

[0034] As a possible example, in the embodiment, the inductive primary 101 is installed on the horizontal plate close to the side of the bearing plate 2. Specifically, in the embodiment, the horizontal plate includes an upper horizontal plate on the upper side and a lower horizontal plate on the lower side, and the inductive primary 101 is installed on the upper horizontal plate close to the side of the bearing plate 2, and the lower horizontal plate is not provided with the inductive primary 101. The inductive primary 101 is a structure commonly used in the art, including a core and a winding, which will not be described here.

[0035] As a possible example, in the embodiment, the first magnet group includes two groups, respectively supporting the transverse two ends of the bearing plate 2. However, the actual implementation is not limited thereto. For example, the first magnet group can also be one group for supporting the middle part of the bearing plate 2, at this time the inductive primary 101 and the inductive secondary 201 should be two groups, respectively located on the transverse two sides of the first magnet group.

[0036] As a possible example, in the embodiment, the first magnet 102 of the two groups of first magnet groups is respectively installed on the two vertical plates, and is located on the side of the vertical plate close to the bearing plate 2. The second magnet 203 of the two groups of first magnet groups is respectively installed on the transverse two ends of the bearing plate 2. Compared with the way of fixing the first magnet 102 on the horizontal plate, in the embodiment, the first magnet 102 is fixed on the vertical plate, so that the distance between the first magnet 102 and the second magnet 203 is smaller, and a larger magnetic force can be generated.

[0037] As a possible example, in the embodiment, the third magnet 103 of the two groups of second magnet groups is respectively installed on the two vertical plates, and is located on the side of the vertical plate close to the other vertical plate. The side of the bearing plate 2 close to the base 1 is provided with a support, and the fourth magnet 204 is installed on the support. The transverse two ends of the bearing plate 2 are each provided with a fourth magnet 204 to respectively correspond to the third magnet 103 on the two vertical plates. It should be noted that the two groups of second magnet groups in the embodiment limit the bearing plate 2 on the transverse two sides, not to keep the transverse position of the bearing plate 2 unchanged, but to change the transverse position of the bearing plate 2 within a certain range. On one side of the bearing plate 2, as the fourth magnet 204 of one group of second magnet groups approaches the third magnet 103, the repulsive force between them increases, so that they move away from each other, while the third magnet 103 and the fourth magnet 204 of the other group of second magnet groups on the other side of the bearing plate 2 approach each other.

[0038] As a possible example, in the embodiment, the inductive secondary 201 is an aluminum plate installed on the bearing plate 2, and the aluminum plate is located on the side of the bearing plate 2 close to the base 1. It should be noted that the inductive secondary 201 is usually divided into a magnetic secondary, a non-magnetic secondary and a composite secondary, and the non-magnetic secondary is used in the embodiment, and other forms of inductive secondary 201 can also be selected by those skilled in the art.

[0039] The type of the first and second magnet groups can be an electromagnet or a permanent magnet, and a person skilled in the art can select according to actual needs.

[0040] In order to avoid the first magnet 102 and the second magnet 203 being in contact or the induction primary 101 and the induction secondary 201 being in contact due to too much weight of pedestrians or goods on the single-piece bearing plate 2, a protection device (not shown in the figure) is further arranged in the embodiment. The protection device comprises a roller rotatably arranged on the bearing plate 2, and the axial direction of the roller is the transverse direction in the embodiment. When the roller is in rolling contact with the upper part of the base 1, a gap is left between the first magnet 102 and the second magnet 203 and between the induction primary 101 and the induction secondary 201, so as to avoid the first magnet group and the linear induction motor being damaged.

[0041] The principles and implementation manners of the present application are described in the specification by applying specific examples, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for a person skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A magnetic levitation conveyor device, characterized by The utility model relates to a kind of rotary table, including: Base; Conveyer belt is sleeved to the outside of the base, and the conveyer belt includes multiple bearing plates, multiple bearing plates are annularly distributed, and two adjacent bearing plates are hingedly connected; Linear induction motor for driving the conveyer belt to rotate around the base, the linear induction motor includes induction primary and induction secondary;The induction primary is installed on the base, and the induction secondary is the bearing plate or is installed on the bearing plate; First magnet group, the first magnet group includes first magnet and second magnet;The first magnet is annularly installed on the base, and the second magnet is installed on the side of the bearing plate close to the base;The first magnet and the second magnet repel each other magnetically to exert a thrust on the bearing plate away from the base; Second magnet group, the second magnet group includes third magnet and fourth magnet;The third magnet is installed on the base, and the fourth magnet is installed on the bearing plate; The third magnet and the fourth magnet repel each other magnetically to exert a lateral thrust on the bearing plate;The second magnet group includes two groups, and two groups of the second magnet group are located on the lateral sides of the bearing plate to limit the bearing plate on the lateral sides;The lateral direction is the horizontal direction perpendicular to the linear velocity direction of the bearing plate; The base includes vertical plate and horizontal plate, the vertical plate includes two and is opposite, and the horizontal plate is located between two vertical plates, and the horizontal plate is vertically fixed and connected at the transverse ends of two vertical plates; The induction primary is installed on the side of the horizontal plate close to the bearing plate; The first magnet group includes two groups, and the lateral ends of the bearing plate are respectively supported.

2. The magnetic levitation conveyor according to claim 1, characterized in that The first magnet of two groups of the first magnet group is respectively installed on two vertical plates and located on the side of the vertical plate close to the bearing plate;The second magnet of two groups of the first magnet group is respectively installed on the lateral ends of the bearing plate.

3. The magnetic levitation conveyor according to claim 1, characterized in that The third magnet of two groups of the second magnet group is respectively installed on two vertical plates and located on the side of the vertical plate close to another vertical plate.

4. The magnetic levitation conveyor according to claim 3, characterized in that The side of the bearing plate close to the base is provided with a bracket, and the fourth magnet is installed on the bracket;The lateral ends of the bearing plate are provided with the fourth magnet to correspond to the third magnet on two vertical plates respectively.

5. The magnetic levitation conveyor according to claim 1, characterized in that The horizontal plate includes upper horizontal plate on the upper side and lower horizontal plate on the lower side, and the induction primary is installed on the side of the upper horizontal plate close to the bearing plate.

6. The magnetic levitation conveyor of claim 1, wherein, The induction secondary is an aluminum plate installed on the bearing plate, and the aluminum plate is located on the side of the bearing plate close to the base.

7. The magnetic levitation conveyor according to claim 1, characterized in that The vertical plate is a long circular plate.

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