CN111267875A

CN111267875A - Magnetic suspension motor bearing vehicle system

Info

Publication number: CN111267875A
Application number: CN202010102841.9A
Authority: CN
Inventors: 周峰
Original assignee: Shenzhen Bozhida Robot Co ltd
Current assignee: Shenzhen Bozhida Robot Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-06-12
Anticipated expiration: 2040-02-19
Also published as: CN111267875B

Abstract

The invention relates to the technical field of magnetic suspension motor bearing vehicles, in particular to a magnetic suspension motor bearing vehicle system which comprises a mechanical unit, a control unit and a signal transmission unit, wherein the mechanical unit consists of rollers, a guide rail and a linear motor, the linear motor comprises two bases, two tracks, an adapter plate, a driver, a stator and a stator plate, the two tracks are arranged on two sides between the two bases, the adapter plate is connected to the tops of the two tracks in a sliding mode, the driver is fixedly connected to the side face of the adapter plate, the stator plate is fixedly connected to the middle portion between the two bases, the stator is arranged on the top of the stator plate, and the stator is in transmission connection with the adapter plate. The invention can realize high-speed and high-precision linear motion under the condition of the effective load of the magnetic suspension motor bearing vehicle by improving the linear motor, and has the advantages of stable structure, flexible installation mode and high thrust.

Description

Magnetic suspension motor bearing vehicle system

Technical Field

The invention relates to the technical field of magnetic levitation motor bearing vehicles, in particular to a magnetic levitation motor bearing vehicle system.

Background

In the prior art, linear electric motor is generally selected for use to the drive control device that magnetic levitation motor bore car, and current linear electric motor's limitation is great, has not only influenced magnetic levitation motor and has bore car's work efficiency, has also brought the trouble for magnetic levitation motor bore car's design and manufacturing simultaneously.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a magnetic suspension motor bearing vehicle system which has the advantages of stable structure, flexible installation mode and large thrust, and solves the problems that the existing linear motor has large limitation, the working efficiency of the magnetic suspension motor bearing vehicle is influenced, and the design and the manufacture of the magnetic suspension motor bearing vehicle are troublesome.

(II) technical scheme

In order to achieve the technical problem, the invention provides a magnetic suspension motor bearing vehicle system which comprises a mechanical unit, a control unit and a signal transmission unit, wherein the mechanical unit is composed of rollers, a guide rail and a linear motor, the linear motor comprises a base, rails, an adapter plate, a driver, a stator and a stator plate, the number of the base and the number of the rails are two, the two rails are arranged on two sides between the two bases, the adapter plate is connected to the tops of the two rails in a sliding mode, the driver is fixedly connected to the side faces of the adapter plate, the stator plate is fixedly connected to the middle portion between the two bases, the stator is arranged on the top of the stator plate, and the stator is in transmission connection with the adapter plate.

Furthermore, two equal fixedly connected with installation piece in both sides of base opposite face, and the one side fixedly connected with anticollision piece that the base was kept away from to the installation piece.

Furthermore, the side of the adapter plate is fixedly connected with an induction sheet, the bottom of the induction sheet is fixedly connected with a current collector, and the back of the current collector is fixedly connected to the side of the adapter plate.

Further, two equal fixedly connected with mount pad in both sides between the base opposite face, track fixed connection is at the top of mount pad, and the installation piece is located between track and the stator board.

Further, the bottom of the roller is in rolling connection with the top of the guide rail, the bottom of the roller is in line contact with the top of the guide rail, and the rotating speed of the roller is 8-15 m/s.

Further, the guide rail is processed by adopting a middle frequency S50C process, the surface hardness of the guide rail is HRC58-62, and the top surface, the two inclined surfaces and the two side surfaces of the guide rail are all ground and have a finish degree of less than 1.6.

Further, the control unit comprises a driver control and a PLC programming control.

(III) advantageous effects

The invention provides a magnetic suspension motor carrier vehicle system, which has the following beneficial effects:

1. the magnetic suspension motor bearing vehicle system can realize high-speed and high-precision linear motion under the condition that the magnetic suspension motor bearing vehicle has effective load through the improvement of the linear motor, and has the advantages of stable structure, flexible installation mode and large thrust.

2. This magnetic levitation motor bears car system, the contact mode through bearing and guide rail is line contact for the gyro wheel passes through the scraping motion, can strike off impurity such as dust, smear metal from the guide surface, keeps the cleanness of guide surface, thereby can be fit for using under adverse circumstances.

Drawings

FIG. 1 is a schematic view of a linear motor according to the present invention

FIG. 2 is a system diagram of the architecture of the present invention.

In the figure: 1. a base; 2. a track; 3. an adapter plate; 4. a driver; 5. mounting blocks; 6. an anti-collision block; 7. a stator; 8. a stator plate; 9. an induction sheet; 10. a current collector; 11. and (7) mounting a seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a magnetic suspension motor vehicle-carrying system comprises a mechanical unit, a control unit and a signal transmission unit, wherein the mechanical unit comprises rollers, a guide rail and a linear motor, the linear motor comprises a base 1, rails 2, an adapter plate 3, a driver 4, a stator 7 and a stator plate 8, the number of the base 1 and the number of the rails 2 are two, the two rails 2 are arranged on two sides between the two bases 1, the adapter plate 3 is slidably connected on the top of the two rails 2, the driver 4 is fixedly connected on the side surface of the adapter plate 3, the stator plate 8 is fixedly connected in the middle between the two bases 1, the stator 7 is arranged on the top of the stator plate 8, the stator 7 is in transmission connection with the adapter plate 3, the mounting blocks 5 are fixedly connected on two sides of opposite surfaces of the two bases 1, the anti-collision block 6 is fixedly connected on one side of the mounting block 5 far away from the base 1, the side surface of, the bottom fixedly connected with current collector 10 of response piece 9, and the back fixed connection of current collector 10 is in the side of keysets 3, the equal fixedly connected with mount pad 11 in both sides between two base 1 opposite faces, and track 2 fixed connection is at the top of mount pad 11, and installation piece 5 is located between track 2 and the stator board 8.

Thrust calculation for linear motor

Calculation of thrust at Uniform motion (N)

FL＝μ(ML+Mp)g+Fn

＝0.01×(100+50)×9.8+1.03

＝15.73N

Ultimate acceleration time (S)

Tamax＝(ML+Mp)·Vm·K/(Fm-FL)

＝(100+50)×15×1.3÷(1890-15.73)

＝1.56S

Acceleration thrust calculation (N)

Fa＝Vm/Ta×(ML+Mp)+FL

＝15÷1.7×(100+50)+15.73

＝1339.26N

Deceleration thrust calculation (N)

Fa＝Vm/Ta×(ML+Mp)-FL

＝15÷1.7×(100+50)-15.73

＝1307.80N

Actual thrust (N)

Frms＝√((Fa²×Ta+FL²×Tb+Fd²×Tc)/T)

＝√((1339.26²×1.7+15.73²×3.7+1307.80²×1.7)/7.1)

＝916.03N

The most intuitive characteristic of the linear motor is that linear motion is directly generated, and high-precision position positioning control in different ranges from high speed to low speed and the like can be realized in a mode of directly driving a load. The rotor and the stator of the linear motor are not in direct contact, and the stator and the rotor are rigid parts, so that the silence of the motion of the linear motor and the high rigidity of the core motion part of the whole mechanism are ensured.

The system innovatively provides a linear motor, and according to the fact that the motor is in a reverse electrodynamic type and is in a direct proportion with the speed, the thrust of the domestic linear motor is large (not less than 1890N) and the reverse electrodynamic type is small (not more than 12.9V/M/S), 15M/S multiplied by 12.9V/M/S is 193.5V is calculated according to the fact that the motor is in the reverse electrodynamic type and is in the direct proportion with the speed, namely the bus voltage of a driver reaches 220V, and the requirement provided by the project can be met. The motor conforming to the project is developed, and the winding of the coil is reduced by forward and backward winding through the algorithm of the linear motor, so that the international advanced level is achieved.

The bottom of the roller is in rolling connection with the top of the guide rail, and the bottom of the roller is in line contact with the top of the guide rail, so that the precision requirement on the installation reference surface is greatly reduced, labor is saved during assembly, and the rotating speed of the roller is 8-15 m/s.

The worn guide rail or the worn roller can be replaced independently without being replaced completely, and the required pretightening force can be conveniently adjusted and obtained by adjusting the eccentric roller on site, so that the maintenance and replacement cost of the roller and the guide rail is lower.

The guide rail has a much longer life than the gyro wheel, and under many circumstances, only need to change the gyro wheel, then through the eccentricity of adjusting eccentric gyro wheel, obtains required pretightning force, for traditional ball guide rail, no matter be ball or guide rail wear to a certain extent after, in order to guarantee to use the pretensioning or the clearance that needs, all need the whole set to change.

The rolling element of the bearing in the gyro wheel and the guide rail are not direct contact, and the bearing has fine leakproofness simultaneously, because the contact mode of bearing and guide rail is line contact for the gyro wheel passes through scraping motion, can strike off impurity such as dust, smear metal from the guide surface, keeps the cleanness of guide surface, thereby is particularly suitable for using under adverse circumstances.

The guide rail is subjected to intermediate frequency treatment of S50C, the surface hardness of the guide rail is HRC58-62, the top surface, the two inclined surfaces and the two side surfaces of the guide rail are subjected to grinding treatment, and the smoothness is less than 1.6.

The standard length of the guide rail is 1030mm, the installation reference surface of the guide rail has standard precision, the straightness of the guide rail is not more than 0.02mm, the standard length error of the guide rail is not more than 0.05mm, and the splicing gap is not more than 0.04 mm.

The load of the guide rail does not exceed 5530N, and the rated service life is 100000 Km.

The ambient temperature of the guide rail and the roller is-20 ℃ to 50 ℃.

The control unit comprises a driver control and a PLC programming control.

The drive control is specially developed for the EtherCAT real-time Ethernet system, the excellent performance of the EtherCAT is particularly suitable for the drive technology, such as short cycle time and good synchronism and simultaneity, and even if a large number of devices are connected in the communication network, the EtherCAT can still realize the extremely short cycle time.

The PLC programming control is a digital operation electronic system designed specially for application in industrial environment, and it adopts a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes.

The signal transmission unit has a wider local area network coverage range, the coverage radius can reach about 100M, the transmission speed is very high, the transmission speed can reach 11mbps (802.11b) or 54mbps (802.11a), the signal transmission unit is suitable for high-speed transmission, wiring is not needed, the signal transmission unit is not limited by wiring conditions, the signal transmission unit has the advantages of convenience, wider application range, the internet can be accessed into corresponding scenes through a high-speed line, and the signal transmission unit has obvious advantages of safety and economic cost.

The system enables the linear motor to be electrified through the power supply equipment, generates power through electromagnetic cutting, sends out an instruction through programming control, and the motor determines displacement by searching the positioning of the magnetic poles through the Hall, accelerates to 15m/s within a distance less than or equal to 10m, brakes within a distance less than or equal to 15m and reaches 0m/s in speed, so that the displacement can be accurately controlled in the process.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a magnetic levitation motor bears car system, includes mechanical unit, the control unit and signal transmission unit, its characterized in that: the mechanical unit comprises gyro wheel, guide rail and linear electric motor, linear electric motor is including base (1), track (2), keysets (3), driver (4), stator (7) and stator board (8), the quantity of base (1) and track (2) is two, and two track (2) are established in the both sides between two bases (1), keysets (3) sliding connection is at the top of two track (2), driver (4) fixed connection is in the side of keysets (3), stator board (8) fixed connection is at the middle part between two bases (1), the top at stator board (8) is established in stator (7), and stator (7) are connected with keysets (3) transmission.

2. The magnetic levitation electric machine carriage system as recited in claim 1, wherein: two equal fixedly connected with installation piece (5) in both sides of base (1) opposite face, and one side fixedly connected with anticollision piece (6) that base (1) was kept away from in installation piece (5).

3. The magnetic levitation electric machine carriage system as recited in claim 1, wherein: the side fixedly connected with response piece (9) of keysets (3), the bottom fixedly connected with current collector (10) of response piece (9), and the back fixed connection of current collector (10) is in the side of keysets (3).

4. A magnetic levitation electric machine carriage system as recited in claim 2, wherein: two equal fixedly connected with mount pad (11) in both sides between base (1) the opposite face, track (2) fixed connection is at the top of mount pad (11), and installation piece (5) are located between track (2) and stator plate (8).

5. The magnetic levitation electric machine carriage system as recited in claim 1, wherein: the bottom of the roller is in rolling connection with the top of the guide rail, the bottom of the roller is in line contact with the top of the guide rail, and the rotating speed of the roller is 8-15 m/s.

6. The magnetic levitation electric machine carriage system as recited in claim 1, wherein: the guide rail is subjected to intermediate frequency processing of S50C, the surface hardness of the guide rail is HRC58-62, the top surface, the two inclined surfaces and the two side surfaces of the guide rail are subjected to grinding processing, and the smoothness is less than 1.6.

7. The magnetic levitation electric machine carriage system as recited in claim 1, wherein: the control unit comprises a driver control and a PLC programming control.