Accurate positioning mechanism of high-speed biological shaking table

Abstract

An accurate positioning mechanism of a high-speed biological shaking table, which is characterized by comprising a servo motor, an eccentric shaft, a motor connecting disc, a positioning balancing weight, a positioning magnet and a Hall sensor, an eccentric shaft is installed at the top main body end of the servo motor, a motor connecting disc is installed on the surface of the eccentric shaft, a positioning balancing weight is arranged at the top end of the eccentric shaft, a positioning magnet is arranged on the surface of the side, away from the eccentric shaft, of the positioning balancing weight, and a Hall sensor is installed on the surface of the rocking shaft upper plate.

Claims

1. An accurate positioning mechanism of a biological shaking table, comprising a servo motor, an eccentric shaft, a motor connecting disc, a positioning balancing weight, a positioning magnet and a Hall sensor: wherein the eccentric shaft is installed at a top end of a main body of the servo motor, the motor connecting disc is installed on a surface of the eccentric shaft, the positioning balancing weight is arranged at a top end of the eccentric shaft, the positioning magnet is arranged on a surface of a side, away from the eccentric shaft, of the positioning balancing weight, wherein two rocking shaft plates installed on the surface of the main body of the servo motor are fixedly connected by a support column; and the Hall sensor is installed on a surface of one of the two rocking shaft plates.

2. The accurate positioning mechanism of a biological shaking table of claim 1, wherein the main body of the servo motor forms a transmission structure through the eccentric shaft and the motor connecting disc.

3. The accurate positioning mechanism of a biological shaking table of claim 1, wherein the positioning balancing weight forms a drive in an inner wall of the motor connecting disc through the eccentric shaft.

4. The accurate positioning mechanism of a biological shaking table of claim 1, wherein a signal passing hole is arranged at a surface of the motor connecting disc, and the signal passing hole is sized to be in conformity with the positioning magnet.

5. The accurate positioning mechanism of biological shaking table of claim 1, wherein the Hall sensor is fixed on the surface of one of the two rocking shaft plates though thread snaps on the surface of one of the two rocking shaft plates.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram of an overall three-dimensional structure of an accurate positioning mechanism of a high-speed biological shaking table according to the present invention;

(2) FIG. 2 is a schematic diagram of a side sectional view of an accurate positioning mechanism of a high-speed biological shaking table according to the present invention;

(3) FIG. 3 is a schematic diagram of an overall structure of a driving structure of an accurate positioning mechanism of a high-speed biological shaking table according to the present invention; and

(4) FIG. 4 is a schematic diagram of an overall structure of a Hall sensor of an accurate positioning mechanism of a high-speed biological shaking table according to the present invention.

(5) The following call out list of elements can be a useful guide for referencing the element numbers of the drawings. 1 servo motor output end 2 eccentric shaft 3 motor connecting disc 4 balancing weight 5 positioning magnet 6 Hall sensor 101 main body 103 rocking shaft upper plate 102 rocking shaft lower plate 5 Hall sensor 603 thread snaps 3 rocking shaft upper plate

DETAILED DESCRIPTION

(6) An accurate positioning mechanism of a high-speed biological shaking table provided in the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. It will be understood that those skilled in the art can modify the present invention while achieving beneficial effects. Thus, the following descriptions shall be construed to be well understood by those skilled in the art, and should not be construed as a limitation for the present invention.

(7) The present invention will be illustrated by way of examples in the following paragraphs with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following detailed description and the appended claims. It should be noted that the drawings are only schematic, and the size of the drawings are not drawn to scale. They are only drawn to explain objects of the embodiments of the present invention in a convenient and clear manner.

(8) As shown in FIGS. 1 and 2, in an embodiment, the present invention provides an accurate positioning mechanism of a high-speed biological shaking table, comprising a servo motor 1, an eccentric shaft 2, a motor connecting disc 3, a positioning balancing weight 4, a positioning magnet 5 and a Hall sensor 6;

(9) wherein the eccentric shaft 2 is installed at a top main body 101 end of the servo motor, the motor connecting disc 3 is installed on a surface of the eccentric shaft 2, the positioning balancing weight 4 is arranged at a top end of the eccentric shaft 2, the positioning magnet 5 is arranged on a surface of the side, away from the eccentric shaft 2, of the positioning balancing weight 4, and the Hall sensor 6 is installed on a surface of the rocking shaft upper plate 103.

(10) In this embodiment, as shown in FIG. 1, the main body 101 of the servo motor is started during the operation, the main body 101 of the servo motor drives the eccentric shaft 2 to rotate, and then drives the motor connecting disc 3 on the surface of the eccentric shaft 2 to work. The amplitude produced by the eccentric shaft 2 is transmitted to a motion platform of the biological shaking table through the motor connecting disc 3. In the meantime, the point balancing weight 4 arranged on the eccentric shaft 2 is driven by the main body 101 of the servo motor and rotates in an inner wall of the motor connecting disc 3. Then the centripetal force generated during the operation of the motor connecting disc 3 can be balanced, so that the whole driving mechanism achieves dynamic balance when it is working, and the stability of the shaking table is improved during its operation. In addition, the positioning magnet 5 is arranged on a surface of the side of the positioning balancing weight 4. After the positioning balancing weight 4 rotates by 360 degrees inside the motor connecting disc 3, the positioning magnet 5's signal is captured by the Hall sensor 6 installed on a surface of the rocking shaft upper plate 103 through a signal passing hole on the surface of the motor connecting disc 3, then the signal is transmitted to a control system. Through this feedback system, position information of the platform can be fed back to the control system in the form of signals at any time, so as to realize an accurate positioning of a biological shaking table platform. Through the feedback system, the actual speed can also be compared with a preset speed, so as to correct a deviation between the actual speed and the preset speed, so that the speed can be precisely controlled during operation.

(11) Two rocking shaft plates installed on the surface of the main body 101 of the servo motor are fixedly connected by a support column 104. In this embodiment, the rocking shaft upper plate 103 and a rocking shaft lower plate 102 are fixedly connected by the support column 104, and the servo motor is fixed between the rocking shaft upper plate 103 and a rocking shaft lower plate 102, so that instability of the main body 101 of the servo motor resulting from the amplitude of the motor connecting disc 3 and the motion platform can be avoided during its operation.

(12) The main body 101 of the servo motor forms a transmission structure through the eccentric shaft 2 and the motor connecting disc 3. In this embodiment, the servo motor main body 101 drives the eccentric shaft 2 to rotate when it is running, and the motor connecting disc 3 generates amplitude movement under the action of the eccentric shaft 2, and then the motor connecting disc 3 transmits the amplitude to the motion platform for operation.

(13) The positioning balancing weight 4 forms a drive in an inner wall of the motor connecting disc 3 through the eccentric shaft 2, as shown in FIG. 3. In this embodiment, a signal passing hole is arranged at a surface of the motor connecting disc 3, and the signal passing hole is sized to be in conformity with the positioning magnet 5. Since a positioning balancing weight 4 and a Hall sensor 6 are added on the movement mechanism; the centripetal force generated by the eccentric shaft 2 can be balanced through the installation of the positioning balancing weight 4, so that the whole driving mechanism achieves dynamic balance, and the stability of the machine is improved. In addition, a positioning magnet 5 is installed on the positioning balancing weight 4, after the main body of the servo motor 1 rotates by 360 degrees, the positioning magnet 5's signal can be captured by the Hall sensor 6 through the signal passing hole.

(14) The Hall sensor 6 is fixed on the surface of the rocking shaft upper plate 103 though thread snaps 603 on the surface of the rocking shaft upper plate 103. In this embodiment, the positioning magnet 5's signal can be transmitted to a control system by the Hall sensor 6. Position information of the platform can be fed back to the control system in the form of signals at any time, so as to realize an accurate positioning of a biological shaking table platform. Through the feedback system, the actual speed can also be compared with a preset speed, so as to correct a deviation between the actual speed and the preset speed, so that the speed can be precisely controlled during operation.

(15) It will be apparent that many modifications and variations can be made by those skilled in the art without departing from the scope and spirit of the invention. In this way, if those modifications and variations fall within the scope of the claims and equivalents of the invention, the invention is construed to be included in those modifications and variations.