CN113530394A - Linear motor, magnetic suspension door machine and magnetic suspension automatic door - Google Patents

Linear motor, magnetic suspension door machine and magnetic suspension automatic door Download PDF

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Publication number
CN113530394A
CN113530394A CN202110923817.6A CN202110923817A CN113530394A CN 113530394 A CN113530394 A CN 113530394A CN 202110923817 A CN202110923817 A CN 202110923817A CN 113530394 A CN113530394 A CN 113530394A
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CN
China
Prior art keywords
position sensor
rail
linear motor
magnetic suspension
coil windings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110923817.6A
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Chinese (zh)
Inventor
周红伟
邓廉盛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Cloud Cochlea Intelligent Technology Co ltd
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Guangzhou Cloud Cochlea Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangzhou Cloud Cochlea Intelligent Technology Co ltd filed Critical Guangzhou Cloud Cochlea Intelligent Technology Co ltd
Priority to CN202110923817.6A priority Critical patent/CN113530394A/en
Publication of CN113530394A publication Critical patent/CN113530394A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Linear Motors (AREA)

Abstract

The invention discloses a linear motor, a magnetic suspension door machine and a magnetic suspension automatic door, belonging to the technical field of magnetic suspension doors, wherein the linear motor comprises a shell, a position sensor and at least two coil windings; the shell is strip-shaped; the coil windings are sequentially arranged in a row in the shell and are sequentially connected in series for generating magnetic force to push the movable rail, and a magnetic part is fixed on the movable rail; the position sensor is used for detecting the position of the movable rail, and the position sensor is positioned in the queue of each coil winding and between the two coil windings. The invention moves the position sensor in the linear motor from the end part of the coil winding of the motor to the position between the arrays of the coil winding, thereby increasing the stroke of the corresponding movable rail when the linear motor is used.

Description

Linear motor, magnetic suspension door machine and magnetic suspension automatic door
Technical Field
The invention belongs to the technical field of magnetic suspension doors, and particularly relates to a linear motor, a magnetic suspension door motor and a magnetic suspension automatic door.
Background
With the more and more extensive application of the magnetic suspension automatic door, the magnetic suspension door machine is gradually adopted in some application scenes with large travel, such as curtains, folding doors, moving galleries and the like. Among the current linear electric motor, the hall sensor who is used for responding to the movable rail position all sets up the one end at the motor, and its movable rail's of linear electric motor of this kind of structure stroke ratio is shorter, though can adopt a plurality of motors to arrange into a line and drive a movable rail, increase the stroke to increase the home range of door leaf. However, in some situations, such as a situation where the moving track length is limited and a large stroke is required, the solution still cannot achieve the desired effect.
Therefore, a new technology is needed to solve the problem of insufficient travel of the magnetic suspension automatic door under the condition that the length of the moving rail is limited in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a linear motor, a magnetic suspension door machine and a magnetic suspension automatic door, which can increase the stroke of the magnetic suspension automatic door under the condition that the length of a moving rail is limited.
The invention adopts the following technical scheme:
a linear motor comprises a shell, a position sensor and at least two coil windings;
the shell is strip-shaped;
the coil windings are sequentially arranged in a row in the shell and are sequentially connected in series for generating magnetic force to push the movable rail, and a magnetic part is fixed on the movable rail;
the position sensor is used for detecting the position of the movable rail, and the position sensor is positioned in the queue of each coil winding and between the two coil windings.
As a further improvement of the technical scheme of the invention, the position sensor is positioned in the middle of the queue.
As a further improvement of the technical scheme of the invention, the position sensor is a Hall sensor.
As a further improvement of the technical scheme of the invention, the number of the coil windings at both ends of the position sensor is more than or equal to 3.
As a further improvement of the technical scheme of the invention, the number of the coil windings at the two ends of the position sensor is integral multiple of 3.
As a further improvement of the technical scheme of the invention, the sensor device further comprises a sensor mounting seat, wherein the sensor mounting seat is positioned between the two coil windings, and the sensor mounting seat is provided with a groove for embedding the position sensor.
A magnetic suspension door machine comprises a fixed rail, a motor driver fixed on the fixed rail, a movable rail arranged on the fixed rail in a sliding mode, and the linear motor, wherein a machine shell is fixed on the fixed rail, and the motor driver is electrically connected with a coil winding and a position sensor.
As a further improvement of the technical scheme of the invention, the linear motors are provided with a plurality of linear motors, each linear motor is sequentially arranged on the fixed rail at intervals, and the distance between the position sensors of two adjacent linear motors is not more than the length of the movable rail.
As a further improvement of the technical scheme of the invention, the linear motors are uniformly arranged on the fixed rail.
A magnetic suspension automatic door comprises the magnetic suspension door machine.
Compared with the prior art, the invention has the beneficial effects that:
the invention moves the position sensor from the end part of the coil winding of the motor to the position between the arrays of the coil winding, thereby increasing the stroke of the corresponding movable rail when the linear motor is used.
Drawings
The technology of the present invention will be described in further detail with reference to the accompanying drawings and detailed description below:
fig. 1 is an exploded view of a linear motor of the present invention;
FIG. 2 is a diagram showing the positional relationship between the Hall sensor and the coil winding of the linear motor of the present invention with the casing removed;
FIG. 3 is a stroke comparison diagram of the linear motor of the present invention with a conventional linear motor;
fig. 4 is an explosion structure diagram of the magnetic suspension door machine of the invention.
Reference numerals:
1-a linear motor; 11-a housing; 12-a hall sensor; 13-a coil winding; 14-a sensor mount; 141-a groove;
2-moving the rail; 3-orbit determination; 4-a motor driver; 5-a stop member; 10-magnetic suspension gantry crane.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
Referring to fig. 1 to 3, a linear motor 1 includes a housing 11, a position sensor, and at least two coil windings 13.
The casing 11 is strip-shaped, and a strip-shaped cavity is formed inside the casing to mount the coil winding 13 and the position sensor. The coil windings 13 are sequentially arranged in a row in the casing 11 and are sequentially connected in series for generating magnetic force to drive the movable rail 2, and a magnetic part is fixed on the movable rail 2. In the same linear motor 1, the coil windings 13 are connected in series to form a group, and when the linear motor is electrified, the coils generate a magnetic field to act on the moving rail 2, so that the moving rail 2 is pushed. The magnetic member on the moving rail 2 may be a magnetic sheet.
The position sensor is used for detecting the position of the moving rail 2, and the position sensor is positioned in the queue of each coil winding 13 and between two coil windings 13. In one embodiment, the position sensor is a hall sensor 12.
According to the invention, the position sensor is moved from the end part of the coil winding 13 of the motor to the position between the arrays of the coil winding 13, so that the stroke of the corresponding movable rail 2 when the linear motor 1 is used is increased, and the stroke can be increased without changing the length of the motor and the length of the movable rail 2.
The stroke of the moving rail 2 in the prior art is compared with the stroke of the moving rail 2 in the present embodiment.
In the prior art, referring to (a) and (B) of fig. 3, a hall sensor 12 is installed at an end portion of the linear motor 1, and actually, a plurality of coils are arranged in a line, and the hall sensor 12 is located at a head end or a tail end of the line. Since the hall sensor 12 is to sense the magnetic member on the moving rail 2 to confirm the position of the moving rail 2, it is required that the moving rail 2 always overlap with the hall sensor 12, and in addition, in order to ensure that the coil winding 13 can generate a magnetic force action on the magnetic member on the moving rail 2, it is also required that at least one coil winding 13 overlaps with the moving rail 2 (in order to ensure that a sufficient thrust can be provided, there are usually a plurality of overlapping coil windings 13, for example, 2 or 3). As shown in fig. 3 (a), if the hall sensor 12 is at the left end of the coil winding 13 array, the moving rail 2 needs to overlap the coil winding 13 and the moving rail 2 when moving to the leftmost point, and the position of the moving rail 2 at this time is used as the starting point. The moving rail 2 moves rightwards, moves to the left end part of the moving rail 2 to be aligned with the Hall sensor 12 as shown in (B) of figure 3, and the moving rail 2 reaches the rightmost point, and the distance between the rightmost point and the leftmost point is the stroke S1Then S is1Wherein, S is1The stroke of the moving rail 2 is shown, L is the length of the moving rail 2, b is the length occupied by the Hall sensor 12, a is the length of a single coil winding 13, and n is the number of the coil windings 13 lapped when the moving rail 2 is at the leftmost point. In one embodiment, n equals 3, then S1＝L-b-3a。
In the solution of the present invention, referring to (C) and (D) in fig. 3, the leftmost point of the moving rail 2 is first set to be at the same position as the existing solution for comparison. Then, according to the overlapping relationship between the moving rail 2 and the coil windings 13 and the hall sensors 12, the positions of the arrays of the coil windings 13 and the hall sensors 12 are determined, and at this time, the right end portion of the moving rail 2 is aligned with the hall sensors 12, as shown in fig. 3 (C).The moving rail 2 moves rightwards, moves to the left end part of the moving rail 2 to be aligned with the Hall sensor 12 as shown in (D) of figure 3, and the moving rail 2 reaches the rightmost point, and the distance between the rightmost point and the leftmost point is the stroke S2Then S is2In the formula, S2The stroke of the movable rail 2 is shown, L is the length of the movable rail 2, and b is the length occupied by the Hall sensor 12.
By comparison, S2＞S1The increased stroke is the total length of all the coil windings 13 on the left side of the hall sensor 12, the length of a single coil winding 13 is a, and if 3 coil windings 13 are arranged on the left side of the hall sensor 12, the increased stroke is 3a, and of course, the increased stroke is inevitably smaller than L. The position sensor is located in the middle of the queue, and if there are 6 coil windings 13 in total, there are 3 coil windings 13 on the left side of the hall sensor 12.
In summary, the linear motor 1 of the present invention can increase the stroke of the moving rail only by adjusting the position of the position sensor, and is not required to add extra cost, which is very inventive.
Preferably, the number of the coil windings 13 at both ends of the position sensor is greater than or equal to 3, so that no matter which position the moving rail 2 moves to, the thrust generated by not less than 3 coil windings 13 is inevitably received, thereby ensuring that the thrust of the moving rail 2 is enough for use. More preferably, the number of coil windings 13 at both ends of the position sensor is an integer multiple of 3, for example, there are 6 coil windings 13 at both ends of the position sensor.
Specifically, the linear motor 1 further includes a sensor mounting seat 14, the sensor mounting seat 14 is located between the two coil windings 13, the sensor mounting seat 14 is provided with a groove 141 for embedding the position sensor, and the position sensor is mounted and positioned through the sensor mounting seat 14.
Referring to fig. 1 to 4, a magnetic suspension gantry crane 10 includes a fixed rail 3, a motor driver 4 fixed on the fixed rail 3, and a movable rail 2 slidably disposed on the fixed rail 3, and further includes the linear motor 1 as described above, the casing 11 is fixed on the fixed rail 3, and the motor driver 4 is electrically connected to the coil winding 13 and the position sensor. The position sensor detects the position of the moving rail 2 and transmits the position information to the motor driver 4, and the motor driver 4 controls the energization of the coil winding 13 according to the received information, thereby controlling the movement of the moving rail 2.
In practical implementation, on the fixed rail 3, stop blocks are respectively arranged at the leftmost point and the rightmost point of the stroke of the movable rail 2 to limit the position of the movable rail 2, so as to avoid running out of the stroke, which results in that the position of the movable rail 2 cannot be detected or the movable rail 2 cannot be driven subsequently. Correspondingly, the distance between the position sensor and the stop piece 5 is equal to the length of the movable rail 2 minus the length occupied by the position sensor, and is L-b, and the phases of the left coil and the right coil of the whole linear motor 1 can be determined through the position sensor.
In one embodiment, a plurality of linear motors 1 are provided, each linear motor 1 is sequentially arranged on the fixed rail 3 at intervals, and the distance between the position sensors of two adjacent linear motors 1 is not greater than the length of the movable rail 2. The linear motors 1 are arranged on the gantry crane, so that the stroke of the movable rail 2 on the gantry crane is increased. Preferably, the linear motors 1 are uniformly arranged on the fixed rail 3, only the linear motors 1 adopting the invention can be uniformly arranged at equal intervals, and under the condition of uniform arrangement, the thrust provided for the movable rail 2 is more uniform.
Referring to fig. 1 to 4, the magnetic suspension automatic door comprises the magnetic suspension gantry crane 10, the stroke of the moving rail 2 is larger, and the thrust is more uniform.
Other contents of the linear motor, the magnetic suspension door motor and the magnetic suspension automatic door are referred to the prior art and are not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (10)

1. A linear electric motor characterized by: comprises a casing, a position sensor and at least two coil windings;
the shell is strip-shaped;
the coil windings are sequentially arranged in a row in the shell and are sequentially connected in series for generating magnetic force to push the movable rail, and a magnetic part is fixed on the movable rail;
the position sensor is used for detecting the position of the movable rail, and the position sensor is positioned in the queue of each coil winding and between the two coil windings.
2. A linear motor according to claim 1, wherein: the position sensor is located in the middle of the queue.
3. A linear motor according to claim 1, wherein: the position sensor is a Hall sensor.
4. A linear motor according to claim 1, wherein: the number of the coil windings at the two ends of the position sensor is more than or equal to 3.
5. A linear motor according to claim 4, characterized in that: the number of the coil windings at the two ends of the position sensor is integral multiple of 3.
6. A linear motor according to claim 1, wherein: the sensor mounting seat is positioned between the two coil windings and is provided with a groove for embedding the position sensor.
7. A magnetic suspension door machine comprises a fixed rail, a motor driver fixed on the fixed rail and a movable rail arranged on the fixed rail in a sliding way, and is characterized in that: the linear motor of any one of claims 1 to 6, said housing being fixed to said stator rail, said motor driver being electrically connected to said coil winding and said position sensor.
8. The magnetic suspension gantry crane according to claim 7, characterized in that: the linear motors are arranged on the fixed rail at intervals in sequence, and the distance between the position sensors of two adjacent linear motors is not more than the length of the movable rail.
9. The magnetic suspension gantry crane according to claim 8, characterized in that: and the linear motors are uniformly arranged on the fixed rail.
10. A magnetic suspension automatic door is characterized in that: comprising a magnetic levitation door as claimed in any one of claims 7 to 9.
CN202110923817.6A 2021-08-12 2021-08-12 Linear motor, magnetic suspension door machine and magnetic suspension automatic door Pending CN113530394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110923817.6A CN113530394A (en) 2021-08-12 2021-08-12 Linear motor, magnetic suspension door machine and magnetic suspension automatic door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110923817.6A CN113530394A (en) 2021-08-12 2021-08-12 Linear motor, magnetic suspension door machine and magnetic suspension automatic door

Publications (1)

Publication Number Publication Date
CN113530394A true CN113530394A (en) 2021-10-22

Family

ID=78090953

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110923817.6A Pending CN113530394A (en) 2021-08-12 2021-08-12 Linear motor, magnetic suspension door machine and magnetic suspension automatic door

Country Status (1)

Country Link
CN (1) CN113530394A (en)

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