CN113904519B

CN113904519B - Guide type rotor structure for ejection device and ejection device

Info

Publication number: CN113904519B
Application number: CN202110997032.3A
Authority: CN
Inventors: 马笑笑; 李艳明; 张斌; 张远昭; 郑程飞
Original assignee: Beijing Machinery Equipment Research Institute
Current assignee: Beijing Machinery Equipment Research Institute
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2023-03-14
Anticipated expiration: 2041-08-27
Also published as: CN113904519A

Abstract

The invention discloses a guide type rotor structure for an ejection device and the ejection device, wherein the guide type rotor structure comprises a main body frame, a magnetic conduction assembly, a rolling assembly and a guide assembly, the magnetic conduction assembly is arranged in the middle of the main body frame, the guide type rotor structure is provided with power by electromagnetic thrust generated by the magnetic conduction assembly under the action of a magnetic field, the rolling assembly is arranged at the top of the main body frame and is matched with an ejection track, and the rolling assembly can move along the ejection track under the action of the electromagnetic thrust; the guide assembly is arranged on two sides of the main body frame close to the stator, and the guide assembly is matched with the guide tracks on the stator to guide the moving positions of two sides of the main body frame. The rotor structure provided by the invention is provided with the guide assembly and the rolling assembly, so that high-precision guide is ensured, self-adaptive adjustment type stable contact can be realized, the structure is simple, the rigidity is high, and the rotor structure can be suitable for various types of ejection devices.

Description

Guide type rotor structure for ejection device and ejection device

Technical Field

The invention relates to the technical field of ejection, in particular to a guide type rotor structure for an ejection device and the ejection device.

Background

The linear motor is a power device which directly converts electric energy into linear motion mechanical energy, and the rotor runs at a high speed under the thrust action of the stator. Because no intermediate transmission mechanism is needed, and no traditional power sources such as gunpowder and a high-pressure gas source are needed, the high-efficiency high-speed ejection load can be realized.

The linear motor for the ejection device needs to have large thrust to ensure the rotor to move at high speed between the two stators, and the gap between the rotor and the stators needs to be set very small, generally in mm level, in order to improve the motor thrust. The dual influences of small gap between the rotor and the stators and high-speed movement of the rotor are received, the rotor is easy to collide with the stators on two sides in the high-speed movement process to cause ejection failure and the like, the rotor can generate large friction force in the high-speed linear movement process along the ejection track, and the work of the ejection device can be influenced by the overlarge friction force.

Disclosure of Invention

The invention aims to provide a guide type rotor structure which can avoid collision between a rotor and a stator and reduce the friction force of the rotor moving in the ejection process.

Another object of the present invention is to provide an ejector having the above-described guide-type mover structure.

In order to achieve the purpose, the guide type rotor structure for the ejection device comprises a main body frame, a magnetic conduction assembly, a rolling assembly and a guide assembly, wherein the magnetic conduction assembly is arranged in the middle of the main body frame, power is provided for the guide type rotor structure through electromagnetic thrust generated by the magnetic conduction assembly under the action of a magnetic field, the rolling assembly is arranged at the top of the main body frame and is matched with an ejection track, and the rolling assembly can move along the ejection track under the action of the electromagnetic thrust; the guide assembly is arranged on two sides of the main body frame close to the stator, and the guide assembly is matched with the guide tracks on the stator to guide the moving positions of two sides of the main body frame.

Further, the rolling assembly includes a plurality of first bearing groups provided at a left side of the top of the main body frame and a plurality of second bearing groups provided at a right side of the top of the main body frame.

Further, the first bearing set and the second bearing set correspond to each other in positions on both sides of the main body frame.

Further, the first bearing set and the second bearing set respectively comprise a bearing frame and at least two bearings, the bearings are respectively installed on the bearing frame through a rotating shaft, and each bearing is arranged along the moving direction.

Furthermore, a connecting shaft arranged in the horizontal direction penetrates through the main body frame, and two ends of the connecting shaft are respectively connected with the bearing frames of the first bearing group and the second bearing group.

Further, the guide assembly comprises a plurality of first bearings and a plurality of second bearings, the first bearings are arranged above the magnetic conduction assembly and are arranged at intervals along the movement direction, and the second bearings are arranged below the magnetic conduction assembly and are arranged at intervals along the movement direction.

Furthermore, the first bearing and the second bearing correspond to each other at the upper side and the lower side of the magnetic conduction component.

Further, the first bearing and the second bearing are symmetrical to each other along the magnetic conduction assembly.

Further, the first bearing and the second bearing are disposed in the main body frame through a connecting shaft disposed vertically and have a thickness greater than that of the main body frame.

Furthermore, the magnetic conduction assembly comprises a plurality of magnetic conduction columns, and the magnetic conduction columns are arranged on two sides of the main body frame and are distributed along the movement direction.

The second aspect of the invention provides an ejection device, which comprises two stators and the guide type rotor structure of the first aspect, wherein the two stators are respectively arranged on two sides of the main body frame, an ejection track and a guide track are arranged on the stators, the ejection track is matched with the rolling assembly, and the guide track is matched with the guide assembly.

The rotor structure provided by the invention is provided with the guide assembly and the rolling assembly, so that high-precision guide is ensured, self-adaptive adjustment type stable contact can be realized, the structure is simple, the rigidity is high, and the rotor structure can be suitable for various types of ejection devices.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of a guide type mover structure according to an embodiment of the present invention;

fig. 2 is a top view of a guide type mover structure according to an embodiment of the present invention;

fig. 3 is a left side view of a guide type mover structure according to an embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

In the description of the embodiments of the present invention, it should be noted that the term "connected" is to be understood broadly, and may be, for example, fixed, detachable, or integrally connected, and may be mechanically or electrically connected, and may be directly or indirectly connected through an intermediate medium, unless otherwise specifically stated or limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The terms "top," "bottom," "above … …," "down," and "above … …," "left-right direction," "up-down direction" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, independent of their orientation in space.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying a number of the indicated technical features. Thus, a defined feature of "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, a first aspect of the present invention provides a guide type mover structure for an ejection device, including a main body frame 1, a magnetic conductive component 2, a rolling component 3, and a guide component 4, where the magnetic conductive component 2 is disposed in the middle of the main body frame 1, and provides power for the guide type mover structure through an electromagnetic thrust generated by the magnetic conductive component 2 under the action of a magnetic field, the rolling component 3 is disposed at the top of the main body frame 1 and is matched with an ejection track, and the rolling component 3 can move along the ejection track under the action of the electromagnetic thrust; the guide assembly 4 is arranged at two sides of the main body frame 1 close to the stator, and the guide assembly 4 is matched with guide tracks on the stator to guide the moving positions of two sides of the main body frame 1.

The rolling assembly 3 includes a plurality of first bearing sets 31 provided at the left side of the top of the main body frame 1 and a plurality of second bearing sets 32 provided at the right side of the top of the main body frame 1. The positions of the first bearing group 31 and the second bearing group 32 on the two sides of the main body frame 1 correspond to each other, and the first bearing group 31 and the second bearing group 32 are correspondingly arranged on the left side and the right side, so that the stability of the rolling assembly 3 in high-speed movement in the ejection track can be improved. The first bearing set 31 and the second bearing set 32 respectively comprise a bearing frame 311 and at least two bearings 312, the bearings 312 are respectively mounted on the bearing frame 311 through a rotating shaft, and each bearing is arranged along the moving direction. In the embodiment, the number of the bearings 312 is two, but the invention is not limited thereto. The bearings 312 are mounted on the bearing frame 311 by independent shafts, so that even if some of the bearings 312 are damaged, the rolling assembly 3 can still run along the ejection track by means of other normal bearings 312. The main body frame 1 is provided with a connecting shaft 11 in a penetrating manner, and two ends of the connecting shaft 11 are respectively connected with the bearing frames 311 of the first bearing set 31 and the second bearing set 32. The connecting shaft 11 is pressed into the bearing group mounting seat 10 through interference fit, the first bearing group 31 and the second bearing group 32 can flexibly rotate around the connecting shaft 11, and can be adaptively adjusted according to the actual condition of a working surface of a guide rail in the process of high-speed movement of the rotor, so that the stable contact between the rotor and the guide rail is realized; two sets of bearings are arranged on the first bearing group 31 and the second bearing group 32, so that the friction between the rotor and the guide rail can be in a rolling friction mode, and the friction force is effectively reduced. Bearing group mount pad 10 passes through fastening screw 9 and assembles on integral type frame 1, and then constitutes active cell overall structure frame, simultaneously through design convex structure on bearing mount pad 10, can undertake the effort that comes from the integral type frame, avoids this effort to act on fastening screw 9, effectively avoids fastening screw 9 owing to bear the unusual deformation that big shearing force arouses. It should be noted that the positions of the first bearing set 31 and the second bearing set 32 on the two sides of the main body frame 1 may not correspond to each other, that is, they are staggered by a certain distance along the front-back direction of the main body frame 1.

The guide assembly 4 includes a plurality of first bearings 41 and a plurality of second bearings 42, the plurality of first bearings 41 are disposed above the magnetic conductive assembly 2 and are arranged at intervals along the moving direction, and the plurality of second bearings 42 are disposed below the magnetic conductive assembly 2 and are arranged at intervals along the moving direction. The positions of the first bearing 41 and the second bearing 42 on the upper side and the lower side of the magnetic conductive assembly 2 correspond to each other, so that the stability of the mover running along the ejection track can be improved. The first bearing 41 and the second bearing 42 are symmetrical to each other along the magnetic conductive assembly 2, so that the stability of the mover running along the ejection track can be further improved. The first bearing 41 and the second bearing 42 are provided in the main body frame 1 through a connecting shaft 43 provided vertically and the thickness of the first bearing 41 and the second bearing 42 is greater than that of the main body frame 1. The connecting shaft 43 is pressed into the integrated frame 1 through interference fit, the first bearings 41 are mounted on the upper connecting shaft 43 and are distributed in 4 groups at equal intervals; the connecting shaft 44 is pressed into the integrated frame 1 through interference fit, and the second bearings 42 are arranged on the connecting shaft 44 and are distributed in 4 groups at equal intervals; in the moving process of the rotor, the limiting function of the upper and

lower guide bearings

41 and 42 can provide guidance for the moving track of the rotor, so that the rotor moves at high speed along a straight line, and collision and interference with stators on the left side and the right side are avoided. It should be noted that the positions of the first bearing 41 and the second bearing 42 on the upper side and the lower side of the magnetic conductive assembly 2 may not correspond to each other, that is, the first bearing 41 and the second bearing 42 may be offset by a certain distance in the horizontal direction. It should be noted that the bearings in the guide assembly of the present invention may be replaced by pulleys or sliders.

The magnetic conduction assembly 2 comprises a plurality of magnetic conduction columns 21, and the plurality of magnetic conduction columns 21 are arranged on two sides of the main body frame 1 and are distributed along the movement direction. Two ends of the magnetic conduction columns 21 are fixed on the integrated frame 1 through the hexagon socket head cap bolts 22, the magnetic conduction columns 21 are distributed in a multi-group mode at equal intervals, and electromagnetic thrust is generated on the rotor through the magnetic field of the induction motor stator so as to push the rotor to do linear motion.

In conclusion, the rotor structure provided by the invention not only ensures high-precision guiding, but also can realize self-adaptive adjustment type stable contact. The structure of the moving part has light weight, simple structure and high rigidity, and can be suitable for various types of ejection devices.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A guide type rotor structure for an ejection device is characterized by comprising a main body frame, a magnetic conduction assembly, a rolling assembly and a guide assembly, wherein the magnetic conduction assembly is arranged in the middle of the main body frame, power is provided for the guide type rotor structure through electromagnetic thrust generated by the magnetic conduction assembly under the action of a magnetic field, the rolling assembly is arranged at the top of the main body frame and is matched with an ejection track, and the rolling assembly can move along the ejection track under the action of the electromagnetic thrust; the guide assemblies are arranged on two sides of the main body frame close to the stator, and the guide assemblies and the guide tracks on the stator are matched with each other to guide the moving positions of the two sides of the main body frame;

a connecting shaft arranged along the horizontal direction penetrates through the main body frame, and two ends of the connecting shaft are respectively connected with bearing frames of the first bearing group and the second bearing group; the rolling assembly comprises a plurality of first bearing sets arranged on the left side of the top of the main body frame and a plurality of second bearing sets arranged on the right side of the top of the main body frame, the first bearing sets and the second bearing sets respectively comprise a bearing frame and at least two bearings, the bearings are respectively and independently installed on the bearing frame through respective rotating shafts, and each bearing is arranged along the motion direction, and the bearing frame can swing up and down around the connecting shaft, so that the first bearing sets and the second bearing sets can rotate around the connecting shaft.

2. The guided mover structure of claim 1, wherein the first bearing set and the second bearing set correspond to each other in position at both sides of the body frame.

3. The guided rotor structure of claim 1, wherein the guide assembly comprises a plurality of first bearings disposed above the magnetically permeable assembly and spaced apart along the direction of motion, and a plurality of second bearings disposed below the magnetically permeable assembly and spaced apart along the direction of motion.

4. The guided rotor structure of claim 3, wherein the first bearing and the second bearing correspond to each other in position on upper and lower sides of the magnetically conductive assembly.

5. The guided rotor structure of claim 3, wherein the first bearing and the second bearing are symmetrical to each other along the magnetically conductive assembly.

6. The guided mover structure of claim 1, wherein the magnetically conductive assembly comprises a plurality of magnetically conductive posts disposed on both sides of the main frame and arranged along the direction of motion.

7. An ejection device, comprising two stators and the guiding type mover structure as claimed in any one of claims 1 to 6, wherein the two stators are respectively disposed on two sides of the main body frame, the stators are provided with an ejection track and a guiding track, the ejection track is engaged with the rolling assembly, and the guiding track is engaged with the guiding assembly.