Magnetic suspension unloading linear driving sliding door

Abstract

The invention discloses a magnetic suspension unloading linear drive sliding door which comprises a detection device, a suspension device and a magnetic drive stator. The detection device comprises a reading head and a magnetic railing ruler, the magnetic railing ruler is mounted on the suspension device so as to move along with the suspension device, and the reading head is arranged close to the magnetic railing ruler so as to record moving length data of the magnetic railing ruler; the suspension device is provided with a plurality of magnetic rotors, the magnetic drive stators are arranged close to the magnetic rotors, and magnetic poles of the ends, facing the magnetic drive stators, of the adjacent magnetic rotors are opposite. The electrified magnetic drive stator and the magnetic rotor interact to drive the suspension device to move by pushing the magnetic rotor. Compared with the prior art, the self-weight of the door body is counteracted and the friction loss between the roller and the sliding rail is reduced by utilizing the normal-phase attraction force generated when the linear motor normally works through the interaction of the electrified magnetic drive stator and the magnetic rotor, so that the door opening speed is further increased, the noise generated during normal working is reduced, the anti-pinch function is realized, and the safety coefficient is increased.

Description

Technical Field

[0001] The invention mainly relates to a magnetic floating unloading linearly driven sliding door. Background Art

[0002] With the continuous development of my country's manufacturing technology, the application scope of automatic sliding doors is getting wider and wider. They can be found in various large shops, office buildings, restaurants, etc. Their advantages such as automation and high efficiency are deeply loved by users.

[0003] There are two main types of traditional automatic sliding door drive devices, one is driven by a screw motor, and the other is driven by a belt gear. The first type of screw motor generates severe heat, has large friction loss, and reduces precision when working continuously and reciprocatingly. The belt gear in the other type of drive device is a consumable part, and the belt drive relies on friction as the driving force, which cannot avoid the corresponding energy loss. At the same time, it is impossible to prevent pinching by relying solely on these two types of drive devices. If you want to achieve the purpose of anti-pinch, you need to add an additional anti-pinch system, which will increase the cost of the sliding door. When working, the traditional sliding door relies on the rolling pulley located at the top or bottom of the door body to bear the weight of the entire door body, and the pulley slides in the slide rail to play a guiding role. The positive pressure on the pulley mainly comes from the gravity of the door body, which causes friction loss between the pulley and the door body, thereby limiting the opening speed of the door body, and also affects the service life of the pulley and the guide rail. Long-term use will also lead to problems such as increased noise and high maintenance costs.

[0004] Linear motor technology is becoming increasingly mature. Linear motors can produce continuous reciprocating linear motion without any mechanical transmission mechanism. They have the advantages of low friction loss, low maintenance cost and high-precision positioning. They are widely used in engineering machinery, military equipment, medical equipment, transportation equipment, aerospace equipment and other fields.

[0005] At present, there are related technologies that use linear motors as driving devices for sliding doors. The patent document "A linear motor driving device for sliding doors" with application number CN201210382870.0 applies linear motors to the field of subway sliding doors, solving the problems of high noise, short life and easy damage of traditional subway sliding doors. The patent document "Cylindrical linear motor driving sliding doors" with application number CN03260318.5 applies cylindrical linear motors to the field of sliding doors, and realizes the anti-pinch function of sliding doors without setting up an anti-pinch device. The patent document "A linear motor sliding door transmission mechanism" with application number CN201720591619.3 introduces a transmission mechanism between a linear motor and a door body. The application number is CN201410438198.1 "An electric sliding door drive device based on a permanent magnet linear motor", which applies permanent magnet linear motors to the sliding door field, reducing the transmission mechanism in the electric sliding door drive device using a rotating motor, thereby reducing noise and improving stability.

[0006] In summary, there are many related technologies that apply linear motors to the field of sliding doors. However, their common point is that they only utilize the linear driving force of the linear motor, and the normal suction force of the linear motor during normal operation is offset by other devices. Summary of the invention

[0007] In order to reduce the friction loss when the door moves, reduce the influence of the door's own weight and make the door move more smoothly, this patent proposes a new structural solution. The magnetic levitation unloading linear drive sliding door adopts the following technical solutions:

[0008] A magnetic floating unloading linear drive sliding door, comprising a detection device, a suspension device and a magnetic drive stator;

[0009] The detection device comprises a reading head and a magnetic scale, wherein the magnetic scale is installed on the suspension device so as to move with the suspension device, and the reading head is arranged close to the magnetic scale to record the moving length data of the magnetic scale;

[0010] The suspension device is provided with a plurality of magnetic movers, the magnetic drive stator is arranged close to the magnetic movers, and the magnetic poles of adjacent magnetic movers facing one end of the magnetic drive stator are opposite to each other; the energized magnetic drive stator interacts with the magnetic mover to achieve the movement of the suspension device by pushing the magnetic mover.

[0011] Preferably, the suspension device has a bearing plate for placing magnetic materials, and the magnetic mover is mounted on the bearing plate.

[0012] Preferably, the magnetic drive stator is an electromagnet, and the magnetic mover is a permanent magnet.

[0013] Preferably, the hanging device comprises a hanging rail, a hanging wheel and a door hanging plate, the bearing plate and the door hanging plate are mounted on the hanging wheel, and the hanging wheel is placed in the hanging rail.

[0014] Preferably, the reading head is provided with a connecting rod, and the reading head is connected to the hanging rail via the connecting rod.

[0015] Preferably, the door hanging panel is installed with a door body.

[0016] Preferably, an anti-collision block, a controller and a signal generating device are provided in the hanging rail, and the signal generator is connected to the controller.

[0017] Preferably, the controller comprises a dip switch, and the dip switch is connected to control the magnetic drive stator.

[0018] Preferably, the signal generating device is composed of one or more devices selected from the group consisting of a fingerprint recognition machine, a face recognition machine, a card reader, an electronic password lock and a microwave probe.

[0019] The beneficial effects of the present invention compared with the background technology are as follows:

[0020] The existing linear motor sliding door technology only uses the linear thrust of the linear motor during normal operation as the driving force of the door body, reducing the friction loss between the traditional sliding door drive device and the transmission device. However, in the automatic sliding door device, the main device for bearing the weight of the door body is the pulley, and the roller sliding in the slide rail will also generate energy loss. The present invention adopts the above scheme, using the interaction between the energized magnetic drive stator and the magnetic mover to generate the normal phase attraction generated by the normal operation of the linear motor, offsetting the deadweight of the door body, reducing the friction loss between the roller and the slide rail, further increasing the door opening speed, reducing the noise generated during normal operation, and realizing the anti-pinch function, increasing the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the use of a magnetic floating unloading linear drive sliding door in a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of an exploded view of a magnetic levitation unloading linearly driven sliding door in a preferred embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the partial structure of a magnetic levitation unloading linearly driven sliding door in a preferred embodiment of the present invention;

[0024] Figure 4 A schematic diagram of a detection device in a preferred embodiment of the present invention;

[0025] Figure 5It is a schematic diagram of the arrangement of magnetic movers on the supporting plate in the preferred embodiment provided by the present invention. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0027] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The following is a further description of the specific embodiments of the present invention in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the present invention are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the present invention, but cannot be understood as limiting the present invention.

[0029] The preferred embodiment provided by the present invention is as follows: Figure 1~Figure 5 As shown, a magnetic floating unloading linear drive sliding door comprises a detection device 10, a suspension device 20 for hanging on the door body and a magnetic drive stator 30;

[0030] The suspension device 20 has a bearing plate 21 for placing magnetic materials, and the movable bearing plate 21 drives the suspension device 20; a plurality of magnetic movers 22 are installed on the bearing plate 21, and the magnetic poles of adjacent magnetic movers 22 facing one end of the magnetic drive stator 30 are opposite to each other; the magnetic drive stator 30 adopts an electromagnet, and the magnetic mover 22 adopts a permanent magnet. The magnetic drive stator 30 includes a stator housing 31 and a three-phase winding 32, the stator housing is connected to the hanging rail by screws, and the three-phase winding is installed inside the stator housing; the magnetic mover 22 installed on the bearing plate 21 adopts two types of permanent magnets, namely, permanent magnets with N poles facing upward and permanent magnets with S poles facing upward, which are alternately and evenly arranged, and the magnetic mover 22 is connected to the bearing plate 21 by screws.

[0031] The magnetic drive stator 30 is disposed close to the magnetic mover 22 . The energized magnetic drive stator 30 interacts with the magnetic mover 22 to drive the bearing plate 21 to move, thereby enabling the bearing plate 21 to drive the suspension device 20 .

[0032] The suspension device 20 includes a hanging rail 40, a hanging wheel 50 and a door hanging panel 60. The magnetic drive stator 30 is arranged in the middle position of the top end of the hanging rail 40, and the hanging rail 40 is connected to the door beam by screws; a concave groove 41 is provided at the bottom end of the hanging rail 40, and the hanging wheel 50 slides in the concave groove 41; considering the strong interaction force between the magnetic drive stator and the magnetic mover, a convex strip 42 is provided on the inner side of the hanging rail 40 to prevent the magnetic drive stator from being displaced by force.

[0033] The bearing plate 21 and the door hanging plate 60 are installed on the hanging wheel 50, the hanging wheel 50 is connected to the bearing plate 21 by screws, the bearing plate 21 is arranged at the top of the hanging wheel 50, and the door hanging plate 60 is arranged below the hanging wheel 50 for connecting the door body 61; the hanging wheel 50 is placed in the hanging rail 40, and the hanging wheel 50 slides in the hanging rail 40 to play a guiding role; the door hanging plate 60 is installed with the door body 61, and the detection device 10 includes a reading head 11 and a magnetic scale 12, and the magnetic scale 12 is installed on the hanging device 2 0 so that it moves with the suspension device, the reading head 11 is arranged close to the magnetic scale 12 to record the moving length data of the magnetic scale; the magnetic scale 12 is installed on the upper end of the door body 61, and the reading head 11 is provided with a connecting rod 13, and the reading head 11 is connected to the hanging rail 40 through the connecting rod 13, and the gap between the reading head 11 and the magnetic scale 12 is about 1mm. When the magnetic levitation linear drive sliding door is working, the reading head does not move, and the magnetic scale moves with the door body. The reading head obtains the movement state of the door body by reading the magnetic scale.

[0034] The hanging rail 40 is provided with an anti-collision block 43, a controller 44 and a signal generating device 45, and the signal generator 45 is connected to the controller 44; the controller 44 includes a dip switch, and the dip switch is connected to control the magnetic drive stator. The dip switch can adjust the operating parameters according to different door weights in order to achieve the most stable operating state; after the device has been running for a long time, the hanging rail will produce a certain amount of deformation, and the air gap between the magnetic drive stators will change, causing the entire device to be unstable. The parameters can be adjusted through the dip switch to adapt to the new air gap and restore stability.

[0035] The anti-collision block 43 is installed on the running track of the hanging wheel 50, and blocks the hanging wheel and brakes the suspension device in an emergency situation to prevent unnecessary losses. Threaded holes are punched on the diagonal lines of the two end faces of the anti-collision block, and are connected to the hanging rail by screws. The signal generating device 45 is composed of one or more devices selected from a fingerprint recognition machine, a face recognition machine, a card reader, an electronic password lock, and a microwave probe. In this embodiment, the signal generating device adopts a microwave probe, which is installed on the hanging rail housing and connected to the controller.

[0036] Connecting the magnetic drive stator to three-phase alternating current will generate a traveling wave magnetic field, which interacts with the magnetic field generated by the magnetic mover to generate a linear driving force and a normal suction force on the magnetic mover. The normal suction force causes the door body to unload its own weight upwards. At the same time, the linear driving force is transmitted to the door body through the load-bearing plate, the hanging wheel and the door hanging plate, driving the door body to move left and right, thereby reducing the friction loss between the hanging wheel and the hanging rail. The reading head obtains the movement state signal of the door body by detecting the magnetic scale above the door body, and transmits the detected signal to the controller, which controls the opening and stopping of the door body by controlling the linear motor.

[0037] In the description of the specification, the description with reference to the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention, and the schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] Through the description of the above structure and principle, technicians in the relevant technical field should understand that the present invention is not limited to the above-mentioned specific implementation methods. Improvements and substitutions based on the present invention using the well-known technology in the field all fall within the protection scope of the present invention and should be defined by the claims.

Claims

1. A magnetic floating unloading linear drive sliding door, characterized in that: It includes a detection device, a suspension device for hanging on the door body and a magnetic drive stator; The suspension device has a bearing plate for placing magnetic materials, and the movable bearing plate drives the suspension device; a magnetic mover is arranged on the bearing plate, and the bearing plate is driven by the magnetic mover to drive the door body to move.

2. The magnetic floating unloading linear drive sliding door according to claim 1 is characterized in that: The magnetic drive stator adopts an electromagnet, and the magnetic mover adopts a permanent magnet.

3. The magnetic floating unloading linear drive sliding door according to claim 1, characterized in that: The hanging device comprises a hanging rail, a hanging wheel and a door hanging plate, the bearing plate and the door hanging plate are mounted on the hanging wheel, and the hanging wheel is placed in the hanging rail.

4. The magnetic floating unloading linear drive sliding door according to claim 3 is characterized in that: The magnetic drive stator is arranged close to the magnetic mover, and the energized magnetic drive stator interacts with the magnetic mover to drive the bearing plate to move.

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