TWI616393B - Magnetic guide shoe device - Google Patents

Abstract

The invention discloses a magnetic guide shoe device, wherein the magnetic guide shoe device mainly includes a magnetic main body unit (3), a base (19), side plates (14a, 14b), and a cover plate (15). The magnetic main unit (3) is composed of an electromagnet (that is, a winding coil) and a permanent magnet, so that the magnetic guide shoe device maintains a certain gap in three directions with respect to the edges (18a, 18b, 18c) of the guide rail (17). The base (19) is used to support and fix the entire magnetic guide shoe device. The magnetic guide shoe device realizes non-destructive control, easy assembly, good stability, and miniaturization.

Description

Magnetic guide shoe device

The invention relates to an elevator technology, in particular to a non-contact guidance technology involving a passenger car in an elevator.

Generally, an elevator passenger car is supported by a pair of guide rails provided in a vertical direction in a hoistway, and travels through a cable of a hoisting machine. At this time, the guide rail is used to suppress the shaking of the passenger car caused by the unbalanced load and the movement of passengers.

Here, as a guide device for a passenger car of an elevator, a roller guide made up of a wheel and a hanger in contact with the guide rail, or a guide shoe slidably guided to the guide rail are used. However, in such a contact type guide device, vibration and noise are generated due to warpage of a guide rail, a seam, and the like; and noise is also generated when a roller guide rail rotates. Therefore, there is a problem that the comfort of the elevator is impaired.

In order to solve such a problem, a method of non-contactly guiding a passenger car has been proposed.

That is, there is a method of mounting a magnetic guide shoe device made of an electromagnet on a passenger car, applying a magnetic force to an iron guide rail, and guiding the passenger car in a non-contact manner. The guide rail is surrounded by the magnetic guide shoes arranged in the passenger car from three directions, and the electromagnet is excited and controlled according to the size of the air gap between the guide rail and the guide device to guide the passenger car in a non-contact manner with respect to the guide rail. .

However, the above-mentioned electromagnet structure has problems such as low controllability and increased power consumption during actual use. In order to solve the above-mentioned problems, a method of hybrid magnetic and electromagnetic excitation is currently used. Through The combination of permanent magnets and electromagnets can reduce power consumption and realize a magnetic guide shoe device that supports passenger cars with low rigidity and long strokes.

In the above scheme of permanent magnet and electromagnetic hybrid excitation, the permanent magnet and the electromagnet (that is, the winding coil) have no mechanical strength. Therefore, the magnet unit is fixed through the core portion, the backing plate, and the pressing plate. However, a coil is wound around the core portion, which restricts the arrangement of the fixing member, which makes assembly difficult. In addition, it is necessary to provide a fixing member above and below the magnet unit while avoiding the thickness portion of the coil wound around the core. Therefore, when the size in the height direction is increased, the fixing strength is also easily reduced.

Aiming at the problems of the existing magnetic guide shoe device in the existing elevator that are difficult to assemble, large in size, and low in stability, one of the objectives of the present invention is to provide a non-destructive control, easy assembly, good stability, and can realize a miniaturized magnetic body unit .

Another object of the present invention is to provide a magnetic guide shoe device using the above-mentioned miniaturized magnetic body unit in addition to the magnetic body unit.

In order to achieve the above objective, the present invention adopts the following technical solutions:

Aiming at objective 1: The magnetic main body unit provided by the present invention includes a guide groove in the middle and two magnetic pole circuits on both sides of the guide groove. The guide groove is matched with the elevator guide rails, and the two magnetic pole circuits are symmetrically distributed on the guide. Both sides of the groove exert force on the guide rails in the guide groove.

In a preferred solution of the magnetic main body unit, the two magnetic pole circuits can act on the guide rails individually or simultaneously on the guide rails.

Further, the magnetic body unit includes three iron cores, four electromagnets, and two permanent magnets. The third iron core is a T-shaped structure, the first iron core is parallel to the third iron core, and the rear end thereof passes through the first Forever The magnet is connected to one end of the third iron core, and the top end is opposite to the middle convex end of the third iron core; the second iron core is parallel to the third iron core, and its rear end passes through the second permanent magnet and the other of the third iron core. One end is connected, and the top end is opposite to the middle raised end of the third core and is horizontally opposite to the top end of the first core. The top end of the first core is connected to the top end of the second core and the middle part of the third core. The raised ends cooperate to form a guide groove matching the elevator guide rails; the first electromagnet and the fourth electromagnet are respectively disposed on the third iron core, the second electromagnet is disposed on the first iron core, and the third electromagnetic Iron is provided on the second core.

Further, the electromagnet is formed by winding a coil directly on an iron core.

Further, the electromagnet is potted with an epoxy resin through potting treatment, and the coil is completely sealed in the resin. Further, the magnetic body unit is provided with magnetic isolation between the permanent magnet and the electromagnet. material.

Aim at object 2: The magnetic guide shoe device provided by the present invention includes the above-mentioned magnetic main unit and a supporting frame for mounting the magnetic main unit. The magnetic main unit adopts the above-mentioned magnetic main unit and is fixedly disposed in the supporting frame. The supporting frame is connected with the passenger car of the elevator, and the magnetic main unit on the supporting frame is matched with the guide rail in the hoistway, and the air gap between the two is maintained by adjusting the magnetic force generated by the magnetic main unit.

In a preferred solution of the magnetic guide shoe device, the support frame includes: a bottom plate that supports and fixes the magnetic main unit; and a side plate that is fixed on the bottom plate and distributed on both sides of the magnetic main unit to support Connected to the magnetic main unit; a cover plate, which is arranged on the top of the side plate, covers the magnetic main unit, and positions and fixes the magnetic main unit.

Further, the support frame further comprises a shim plate, which is used for the installation of the next component of the entire guide shoe device, while bearing the weight of the entire guide shoe device, and positioning the entire guide shoe device.

Further, the support frame further includes a pressure plate, which is installed on the top of the entire device to limit the magnetic isolation material in the magnetic main unit to ensure that the electromagnets and permanent magnets are not displaced and are connected to the side plate at the same time. Ensure the stability of the guide shoe device.

The solution provided by the present invention is convenient to control, easy to assemble, and has high fixing strength. Most importantly, it can realize miniaturization, thereby effectively solving the problems in the prior art.

Furthermore, in this solution, the magnetic guide shoe device maintains a certain air gap with the guide rail from three directions and maintains the air gap between the guide rail and the magnetic guide shoe through the magnetic force generated by the magnetic main unit, thereby ensuring the reliability of the device operation.

At the same time, in this solution, the relevant coils are processed by potting, which further effectively solves the problems that the coil assembly is vulnerable to damage and the difficulty of assembly and the external environment affects the coil.

1‧‧‧ magnetic guide shoe device

14a, 14b‧‧‧Side panels

15‧‧‧ cover

16a, 16b

17‧‧‧rail

18a, 18b, 18c‧‧‧ blade

19‧‧‧ floor

2‧‧‧ support

20a, 20b‧‧‧Press plate

21a, 21b ‧‧‧ spacer

3‧‧‧ Magnetic body unit

31a‧‧‧First core

31b‧‧‧Second core

31c‧‧‧Third core

32a‧‧‧First permanent magnet

32b‧‧‧Second permanent magnet

33a‧‧‧The first magnetic isolation material

33b‧‧‧Second magnetic isolation material

33c‧‧‧Third magnetic barrier material

33d‧‧‧Fourth magnetic isolation material

34a‧‧‧first electromagnet

34b‧‧‧Second solenoid

34c‧‧‧Third solenoid

34d‧‧‧Fourth solenoid

35a‧‧‧ Central raised end

35b‧‧‧Top

35c‧‧‧Top

40a, 40b, 40c

41a, 41b, 41c, 41d

42a, 42b, 42c, 42d‧‧‧Threaded mounting holes

43a, 43b‧Bottom countersunk head

50a, 50b, 50c

51a, 51b, 51c, 51d‧‧‧‧Slots

1 is a perspective view showing the magnetic guide shoe device shown in this embodiment; FIG. 2 is a top view of the magnetic guide shoe device shown in FIG. 1; FIG. 3 is a front view of the magnetic guide shoe device shown in FIG. 1; FIG. 1 is a perspective view of the structure of a magnetic body unit in the magnetic guide shoe device shown in FIG. 1; FIG. 5 is a top view and a magnetic circuit state diagram of the magnetic body unit shown in FIG. 4; and FIG. 6 is a magnetic guide shoe shown in FIG. 1. Perspective view of the bottom plate of the device; FIG. 7 is a perspective view of a cover plate of the magnetic guide shoe device shown in FIG. 1; FIG. 8 is a magnetic density distribution diagram of the magnetic guide shoe device shown in FIG. 4 with respect to a guide rail; A magnetic density distribution diagram of the guide shoe device in a rightward position relative to the guide rail; FIG. 10 is a magnetic density distribution diagram of the magnetic guide shoe device in a leftward position relative to the guide rail shown in FIG. 4.

In order to make the technical means, creative features, objectives, and effects realized by the present invention easy to understand, the present invention will be further described below with specific illustrations.

Referring to FIG. 1 to FIG. 3, there are shown schematic structural diagrams of the magnetic guide shoe device provided in this example.

As can be seen from the figure, the magnetic guide shoe device 1 mainly includes a support frame 2 and a magnetic main body unit 3 provided in the support frame 2.

The magnetic body unit 3 is mainly composed of a corresponding permanent magnet, an electromagnet (consisting of a corresponding winding coil and an iron core), and an iron core. The whole is fixedly arranged in a support frame, and is opposite to the edge of the guide rail 17 (ie, the guide surface) ) 18a, 18b, 18c maintain a certain gap in three directions. By controlling the magnetic force of the magnetic guide shoe device 1, the passenger car can be lifted from the guide rail 17 to perform a floating lifting movement along the guide rail 17 without contact, and the distance from the guide rail can be adjusted. Accordingly, the magnetic guide shoe device can realize non-destructive control, is easy to assemble, has good stability, and can be downsized.

4 and 5, there is shown a schematic diagram of the structure of the magnetic body unit 3 in this example.

The magnetic body unit 3 mainly includes a first core 31a, a second core 31b, a third core 31c, a first electromagnet 34a, a second electromagnet 34b, a third electromagnet 34c, and a fourth electromagnet 34d. A permanent magnet 32a, a second permanent magnet 32b, a first magnetic barrier material 33a, a second magnetic barrier material 33b, a third magnetic barrier material 33c, and a fourth magnetic barrier material 33d.

In the magnetic body unit 3, the first core 31a has the same structure as the second core 31b, and the third core 31c has a T-shaped structure having a T-shaped cross section. During installation, the first iron core 31a is parallel to the third iron core 31c, the rear end of the first iron core 31a is connected to one end of the third iron core 31c through the first permanent magnet 32a, and the top end 35b is convex relative to the middle of the third iron core 31c.端 35a.

The second iron core 31b is parallel to the third iron core 31c, its rear end is connected to the other end of the third iron core 31c through the second permanent magnet 32b, and the top end 35c is opposite to the middle convex end 35a of the third iron core 31c. It is horizontally opposed to the top end of the first iron core 31a.

Among them, the top end 35b of the first iron core 31a, the top end 35c of the second iron core 31b, and the middle convex end 35a of the third iron core 31c cooperate with each other to form a guide groove matching the elevator guide rail 17. The top end 35b of the first iron core 31a, the top end 35c of the second iron core 31b, and the end faces of the middle protruding end 35a of the third iron core 31c constitute the inner walls of the guide grooves, respectively, and correspond to the edges of the guide rails 17 of the elevator (ie, the guide surfaces ) 18a, 18b, 18c.

Furthermore, the first electromagnet 34a and the fourth electromagnet 34d are centered on the convex end 35a of the third iron core 31c, and are symmetrically arranged at both ends of the third iron core 31c. The second electromagnet 34b is opposite to the first An electromagnet 34a is disposed on the first core 31a, and a third electromagnet 34c is disposed on the second core 31b with respect to the fourth electromagnet 34d.

The first magnetic barrier material 33a and the second magnetic barrier material 33b are inserted in the first iron core 31a and the third iron core 31c, and are disposed symmetrically at both ends of the first electromagnet 34a and the second electromagnet 34b. third The magnetic isolation material 33c and the fourth magnetic isolation material 33d are inserted in the second iron core 31b and the third iron core 31c, and are symmetrically disposed at both ends of the third electromagnet 34c and the fourth electromagnet 34d, respectively. The electromagnet 34a, the fourth electromagnet 34d, the third electromagnet 34c, and the fourth electromagnet 34d are isolated from the first permanent magnet 32a and the second permanent magnet 32b, and their stability is ensured.

In this example, the permanent magnet uses a high-performance aluminum-iron-boron magnetic steel. Specifically, a 38SH grade magnetic steel that can withstand high temperatures (150 ° C) can be selected. The surface is galvanized to ensure stable magnetic properties in a certain environment. Yes, the permanent magnets are box-shaped for easy installation.

In addition, the directions of the magnetic poles of the two permanent magnets 32a and 32b are the same, so that the same direction of magnetization is used when magnetizing, and the same magnetic pole direction prevents different magnetic poles from causing magnetic cancellation and weakens the magnetic induction strength.

The core is laminated with high-performance silicon steel sheets, which can reduce losses and have high magnetic permeability.

The electromagnet is composed of a corresponding winding coil wound on a corresponding iron core. The winding coil is encapsulated with epoxy resin, and the coil is completely sealed in the resin. Through the encapsulation process, the shape of the electromagnet is easily assembled, which can reduce the corresponding electromagnetic noise and increase the protection level of the electromagnet, increase the insulation performance and Resistant to harsh environment, can make the coil guarantee the insulation performance in the harsh environment such as immersion in water; meanwhile, the coil size is guaranteed by potting. The potted product is more able to closely adhere to the magnetic barrier material and does not move.

Furthermore, the corresponding winding fixture is used for the winding method of the winding coil, which can ensure the external dimensions and the neat and beautiful winding.

The magnetic barrier material here also has high strength performance. In addition to isolating the electromagnet and iron, it also bears a certain weight. The magnetic insulation material is specifically selected from bakelite and processed into an E-shape according to the connection and cooperation relationship between the first iron core 31a, the second iron core 31b, and the third iron core 31c, so that it can be easily inserted on the iron core. Thus, the stability of the coil on the iron core is ensured, and no displacement occurs due to the current.

Therefore, when the magnetic body unit 3 is assembled, the connection between the first core 31a, the second core 31b, and the third core 31c is completed through the first permanent magnet 32a and the second permanent magnet 32b according to the above-mentioned scheme.

Next, insert the second magnetically insulating material 33b and the third isolation material 33c into the iron cores 31a, 31b, and 31c; then install the electromagnets (coils) 34a, 34b, 34c, and 34d; finally, insert the first magnetically insulating material 33a 1. The first four magnetic isolation materials 33b are inserted to ensure that the coil is in the magnetic isolation material, as shown in FIG. 4.

5, the first permanent magnet 32 a and the third iron core 31 c, the first electromagnet 34 a, the middle protruding end 35 a of the third iron core, the guide rail 17, and the first iron core in the magnetic main body unit 3 formed according to the above scheme. The top 35b, the second electromagnet 34b, and the first iron core 31a constitute the first magnetic pole circuit; and the second permanent magnet 32b and the third iron core 31c, the fourth electromagnet 34d, and the middle protruding end 35a of the third iron core The guide rail 17, the top end 35c of the second iron core, the third electromagnet 34c, and the second iron core 31b constitute a second magnetic pole circuit.

The two magnetic pole circuits have the same configuration, the magnetic poles of the magnetic material are the same (for example, the first and second permanent magnets 32a and 32b are the same), and the magnetic members are symmetrical to each other. Through the two magnetic pole circuits acting on the blades of the guide rail 17 respectively, when a certain current is passed in, a force capable of acting on the guide rail is generated, so that the guide shoe device can ensure a certain distance from the guide rail.

With regard to the above-mentioned magnetic main body unit 3, in this example, it is supported and fixed by the support frame 2 to obtain a magnetic guide shoe device 1.

Referring to FIG. 1, the support frame 2 is specifically composed of a bottom plate 19, side plates 14 a and 14 b, and a cover plate 15.

The bottom plate 19 is used to support and fix the magnetic main unit 3 in the magnetic guide shoe device. At the same time, the bottom plate 19 is fixed to the car and positioned at a distance from the guide rail 17, while ensuring the integrity of the overall structure.

Referring to FIG. 6, the bottom plate 19 is provided with a groove corresponding to the guide rail 17 and the guide groove on the magnetic body unit 3. The inner side walls 40 a, 40 b, and 40 c of the groove are opposite to the edges 18 a, 18 b, and 18 c of the guide rail 17. .

The bottom plate 19 is provided with four card slots 41a, 41b, 41c, and 41d. The four card slots 41a, 41b, 41c, and 41d correspond to the magnetic isolation materials 33a, 33b, 33c, and 33d in the magnetic body unit 3. It is convenient to move the positions of the magnetic barrier materials 33a, 33b, 33c, and 33d, and to position the magnetic barrier materials during assembly.

The bottom plate 19 is also provided with threaded mounting holes 42 a, 42 b, 42 c, and 42 d for fixed mounting with the magnetic body unit 3.

Step structures are provided on both sides of the bottom plate 19 for positioning the installation positions of the side plates 14a and 14b. At the same time, counterbored holes 43a, 43b are provided on the step structure, and are connected to the side plates 14a, 14b through screws.

The side plates 14a and 14b are used to ensure the height position of the magnetic main unit and at the same time ensure that the magnetic main unit does not move sideways. The side plates 14a, 14b are arranged on the stepped structures on both sides of the bottom plate 19, and are connected to the bottom plate 19 through the countersunk head holes 43a, 43b on the bottom plate through screws. Thereby, the magnetic conductor in the magnetic main unit is embedded in the grooves of the side plates 14a and 14b, and both ends of the iron core are brought into contact with the inner wall of the side plate groove.

Referring to FIG. 1 and FIG. 2, the cover plate 15 is installed on the top of the entire device, and can limit the magnetic isolation material to ensure that the electromagnets and permanent magnets are not displaced. At the same time, it is connected to the side plate to ensure the stability of the guide shoe device.

Referring to FIG. 7, the cover plate 15 has an “I” shape as a whole, and an opening corresponding to the guide rail 17 and the guide groove on the magnetic body unit 3 is provided in the middle thereof. The inner side walls 50 a, 50 b, and 50 c of the opening are respectively The edges 18a, 18b, and 18c correspond to each other.

The cover surface of the cover plate 15 is provided with latching grooves 51a, 51b, 51c, and 51d corresponding to the magnetically insulating materials 33a, 33b, 33c, and 33d in the magnetic body unit 3. At the same time, notches and screw holes matching the upper surfaces of the side plates 14a, 14b are provided on both sides, so that the notches are positioned with the upper surfaces of the side plates 14a, 14b through the notches, and then screwed to achieve fixation with the side plates 14a, 14b. The cover plate 15 thus provided will cover the magnetic body unit 3, and fit through the slots 51a, 51b, 51c, and 51d on the magnetic body material 3a, 33b, 33c, and 33d in the magnetic body unit 3 to realize the alignment. Positioning and fixing of the magnetic body unit 3.

As shown in FIG. 3, in order to further improve the stability and reliability of the magnetic guide shoe device, in this example, pads 16a and 16b are also provided in the support frame, and the pads 16a and 16b are symmetrically disposed on the side plates 14a and 14b for the entire The guide shoe device performs the installation of the next component, and at the same time bears the weight of the entire guide shoe, so that the entire guide shoe device can be positioned.

As shown in FIG. 2, in this example, pressure plates 20 a and 20 b are also provided in the support frame. The pressure plates 20 a and 20 b are symmetrically installed on the top of the entire device and can limit the magnetic insulation material. The pressure plates 20 a and 20 b are also used for clamping. Permanent magnets ensure that the permanent magnets do not fly out of the device due to repulsive force, and can ensure the equal height correspondence between the permanent magnets and the iron core, and then ensure that the electromagnets and permanent magnets do not shift.

The pressure plates 20a, 20b are connected to the side plate at the same time, thereby ensuring the stability of this guide shoe device.

On this basis, in order to facilitate the installation of the pressure plates 20a, 20b, corresponding pads 21a, 21b are provided on the upper part of the device as a transitional transition, the iron core is fastened through the pads 21a, 21b, and the pressure plates 20a, 20b are respectively Lock on the appropriate pad.

For the above magnetic guide shoe device, the specific assembly process is as follows (see FIGS. 1 to 7): The magnetic guide shoe device first connects the bottom plate 19 and the side plates 14a and 14b through the bottom countersunk holes of 43a and 43b through screws.

After the side plates 14a, 14b of the magnetic guide shoe device are installed, the pad plates 16a, 16b and the side plates are locked and installed according to the drawings.

The magnetically insulating material in the magnetic main unit is inserted into the slots 41a, 41b, 41c, and 41d in the bottom plate 19, parallel to the front and back, and placed in an iron core covered with an electromagnet.

The magnet guide in the magnetic main unit is embedded in the grooves of the side plates 14a and 14b, so that both ends of the iron core are in contact with the inner wall of the side plate groove.

Corresponding magnetic isolation materials are installed on both sides of the electromagnet in the magnetic main unit.

The cover plate 15 is installed. As shown in FIG. 1 and FIG. 7, the slots 51 a, 51 b, 51 c, and 51 d in the cover plate 15 are fitted with the magnetic insulation materials 33 a, 33 b, 33 c, and 33 d. And 50c correspond to the edges 18a, 18b, and 18c of the guide rail 17, respectively, and are fixed to the upper surfaces of the side plates 14a and 14b by screws.

As shown in FIG. 1, the magnetic material in the electromagnetic unit of the magnetic guide shoe device determines the position and load bearing through the pads 16 a and 16 b, and then the magnetic barrier material and the baffle are installed in place and put into a permanent magnet.

As shown in Figure 4, the temperature rise situation in the magnetic main unit. In order to ensure that the performance of the magnetic material is not affected by the temperature rise, a high grade, high temperature resistant magnetic material is selected.

The magnetic pole direction of the electromagnet is consistent with the magnetization direction of the permanent magnet.

After the permanent magnet is placed, press into the pressure plates 20a, 20b, and ensure that the magnetic material does not fly out due to the same pole repulsion through the screws.

As shown in FIG. 4, the iron cores 31a, 31b, and 31c all have lock holes, and the pads 16a, 16b and the cover plate 15 are connected through bolts, and the hole elements avoid the magnetic dense area and reduce the influence on the magnetic circuit.

As shown in Figure 1, in order to reduce the magnetic leakage of the magnetic main unit, the parts fixed to the magnetic main unit: the bottom plate 19, the side plates 14a, 14b, the pad plates 16a, 16b, the pressure plates 20a, 20b, and the cover plate 15 are all non-magnetic. material.

As shown in Figure 1, in order to reduce the magnetic leakage effect of the magnetic main unit and have certain mechanical strength requirements, the fixed component base plate 19, side plates 14a, 14b, pad plates 16a, 16b, pressure plates 20a, 20b, and cover plate 15 are used. Aluminum.

As shown in Fig. 4, the iron cores 31a, 31b, and 31c should have certain strength requirements and requirements for convenient assembly, and corresponding welding grooves should be added.

As shown in FIG. 8, it shows the magnetic density distribution of the guide rail 17 in the middle position of the magnetic pole opening of the magnetic body unit in the magnetic guide shoe device configured as described above.

As shown in FIG. 9, it shows the magnetic density distribution of the right end position of the guide rail 17 at the opening of the magnetic pole of the magnetic main unit in the magnetic guide shoe device configured as described above.

As shown in FIG. 10, it shows the magnetic density distribution of the left end of the guide rail 17 at the opening of the magnetic pole of the magnetic main unit in the magnetic guide shoe device configured as described above.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the foregoing embodiments. What is described in the above embodiments and the description is only to explain the principle of the present invention. The present invention will also have the following without departing from the spirit and scope of the present invention. Various changes and improvements fall within the scope of the claimed invention. The claimed scope of the invention is defined by the appended claims and their equivalents.

1‧‧‧ magnetic guide shoe device

14a, 14b‧‧‧Side panels

15‧‧‧ cover

16a, 16b

17‧‧‧rail

18a, 18b, 18c‧‧‧ blade

19‧‧‧ floor

2‧‧‧ support

20a, 20b‧‧‧Press plate

21a, 21b ‧‧‧ spacer

3‧‧‧ Magnetic body unit

Claims (7)

A magnetic guide shoe device includes a magnetic main unit and a support frame for mounting the magnetic main unit. The magnetic main unit includes a guide groove in the middle and two magnetic pole circuits on both sides of the guide groove. The guide groove and the elevator The guide rails are fitted in a gap, and the two magnetic pole circuits are symmetrically distributed on both sides of the guide groove, and exert a force on the guide rails in the guide groove. The support frame is connected with the passenger car of the elevator, and the magnetic main unit is connected with the guide rails in the lifting channel. The gap fits to maintain the air gap suspension between the two by adjusting the magnetic force generated by the magnetic body unit; wherein the support frame includes a bottom plate, a side plate, and a cover plate, and the side plates are fixed on the bottom plate and distributed on the magnetic body The two sides of the unit support and connect the magnetic main unit; the cover is arranged on the top of the side plate and covers the magnetic main unit. The magnetic main unit further includes an electromagnet and a permanent magnet, and a partition is provided between the permanent magnet and the electromagnet. Magnetic material, the bottom plate is provided with a card slot, and the cover plate is provided with another card slot corresponding to the card slot of the bottom plate, and the card slot and the other card slot are provided for Magnetic material is embedded such that the magnetic body is positioned and fixed unit. The magnetic guide shoe device according to claim 1, wherein the support frame further comprises a pad plate and a pressure plate, and the pad plate is used for the installation of the next component of the entire guide shoe device while bearing the weight of the entire guide shoe And positioning the entire guide shoe device; the pressure plate is installed on the top of the entire device, limits the magnetic isolation material in the magnetic body unit and is connected to the side plate at the same time. The magnetic guide shoe device according to claim 1, wherein the two magnetic pole circuits can act on the guide rails alone or simultaneously on the guide rails. The magnetic guide shoe device according to claim 3, wherein the magnetic body unit further includes three iron cores, four electromagnets, two permanent magnets, a third iron core having a T-shaped structure, and a first iron The core is parallel to the third iron core, and its rear end is connected to one end of the third iron core through the first permanent magnet, and the top end is opposite to the third iron core. The raised end in the middle of the iron core; the second iron core is parallel to the third iron core, the rear end of which is connected to the other end of the third iron core through the second permanent magnet, and the top end is opposite to the middle raised end of the third iron core And is horizontally opposite to the top end of the first iron core, and the top end of the first iron core and the top end of the second iron core and the middle convex end of the third iron core cooperate to form a guide groove matching the elevator guide rail. The first electromagnet and the fourth electromagnet are respectively disposed on a third core, the second electromagnet is disposed on the first core, and the third electromagnet is disposed on the second core. The magnetic guide shoe device according to claim 4, wherein the electromagnet is formed by directly winding a coil on an iron core. The magnetic guide shoe device according to claim 5, wherein the electromagnet is potted with epoxy resin through potting treatment, and the coil is completely sealed in resin. The magnetic guide shoe device according to claim 4, wherein the first permanent magnet and the second permanent magnet have the same magnetic pole.