CN107812708B - Method for adjusting vibration direction angle of self-synchronizing elliptical vibration machine and self-synchronizing elliptical vibration machine - Google Patents
Method for adjusting vibration direction angle of self-synchronizing elliptical vibration machine and self-synchronizing elliptical vibration machine Download PDFInfo
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- CN107812708B CN107812708B CN201710960183.5A CN201710960183A CN107812708B CN 107812708 B CN107812708 B CN 107812708B CN 201710960183 A CN201710960183 A CN 201710960183A CN 107812708 B CN107812708 B CN 107812708B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/18—Control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
Abstract
The invention discloses a method for adjusting the vibration direction angle of a self-synchronizing elliptical vibration machine, which comprises the following steps: the vibration machine comprises a vibration machine body, a controller, a speed regulator, a first motor, a second motor, an acceleration sensor, a first vibration exciter and a second vibration exciter, wherein the first vibration exciter and the second vibration exciter are respectively driven by the first motor and the second motor; the vibration machine comprises a vibration machine body, an acceleration sensor, a controller and a controller, wherein the acceleration sensor is arranged on the vibration machine body and inputs a detected vibration signal into the controller; the controller acquires a real-time vibration direction angle according to the vibration signal, compares the real-time vibration direction angle with a preset vibration direction angle, and outputs a speed regulation signal to the speed regulator according to a comparison result; and the speed regulator controls the first motor and/or the second motor to change the driving rotating speed according to the speed regulating signal so as to regulate the real-time vibration direction angle. The method can realize online adjustment of the vibration direction angle of the vibration track, so that the vibrating screen has higher screening efficiency and higher flexibility in actual production.
Description
Technical Field
The invention belongs to the field of vibration utilization engineering, and particularly relates to a method for adjusting a vibration direction angle of a self-synchronizing elliptical vibration machine and the self-synchronizing elliptical vibration machine.
Background
The self-synchronizing vibrating machine is widely applied to various departments of industries such as mines, metallurgy, cement production, material transportation, mechanical manufacturing and the like, has various types and forms, is widely applied to engineering technical departments, and specifically comprises a self-synchronizing vibrating feeder, a self-synchronizing vibrating conveyor, a self-synchronizing vibrating cooler, a casting shakeout machine, a self-synchronizing probability sieve and the like. At present, the self-synchronizing vibrating machine has the common characteristics that: two vibration exciters mounted on the same rigid vibration rigid body are respectively driven by two motors, so that the vibration system can implement synchronous stable transmission.
However, various vibration machines on the market lack products for adjusting the motion postures and motion parameters on line. In the engineering field, the vibration direction angle of a vibrating machine during screening work is an important parameter influencing the screening efficiency and yield. However, the selection of the vibration direction angle should not be constant according to different properties of the materials, and in order to ensure higher screening efficiency and higher treatment capacity for screening various materials, different vibration direction angles need to be set according to a production plan so as to achieve the optimal effect of the screening operation.
For a double-shaft self-synchronizing elliptical vibration machine, in view of the fact that the exciting forces generated by the two vibration exciters are different and the like, the self-adaptive adjustment factor of the vibration direction angle is relatively complex.
Therefore, a method capable of adjusting the vibration direction angle of the self-synchronizing elliptical vibrating screen is urgently needed.
Disclosure of Invention
In order to solve the technical problem, embodiments of the present invention provide a method for adjusting a vibration direction angle of a self-synchronizing elliptical vibrating machine, which is applicable to adjustment of vibration direction angles of materials with different properties during screening, that is, an optimal vibration direction angle is provided for the screening of the materials with different properties, so that the screening efficiency and flexibility of the self-synchronizing elliptical vibrating machine driven by two machines in actual production are improved.
The invention provides a method for adjusting the vibration direction angle of a self-synchronizing elliptical vibration machine, which comprises the following steps: the vibration machine comprises a vibration machine body, a controller, a speed regulator, a first motor, a second motor, an acceleration sensor, a first vibration exciter and a second vibration exciter, wherein the first vibration exciter and the second vibration exciter are respectively driven by the first motor and the second motor; the acceleration sensor is arranged on the vibrating machine body and inputs a detected vibration signal into the controller; the controller acquires a real-time vibration direction angle according to the vibration signal, compares the real-time vibration direction angle with a preset vibration direction angle, and outputs a speed regulation signal to the speed regulator according to a comparison result; and the speed regulator controls the first motor and/or the second motor to change the driving rotating speed according to the speed regulating signal, so as to regulate the real-time vibration direction angle.
In the embodiment of the invention, the acceleration sensor is a three-axis acceleration sensor; the controller acquires a real-time vibration direction angle according to vibration signals of an X axis and a Z axis from the three-axis acceleration sensor; the vibration signal of the X axis represents the vibration information of the mass center of the vibrator body in the horizontal direction, and the vibration signal of the Z axis represents the vibration information of the mass center of the vibrator body in the vertical direction.
In the embodiment of the invention, the acceleration sensor comprises two single-axis sensors which are respectively arranged on an X axis and a Z axis; wherein the X-axis represents a horizontal direction of a mass center of the vibrator body, and the Z-axis represents a vertical direction of the mass center of the vibrator body.
In the embodiment of the invention, the acceleration sensor is arranged at the projection of the mass center of the vibrator body on the side plate of the shell to monitor the vibration track of the vibrator.
In the embodiment of the present invention, an absolute difference between the first motor and the second motor is smaller than a preset threshold.
In the embodiment of the invention, the first motor and the second motor have the same specification and opposite rotating speeds; the eccentric mass moments of the first vibration exciter and the second vibration exciter are different.
In the embodiment of the invention, the first vibration exciter rotates anticlockwise, the second vibration exciter rotates clockwise, and the eccentric mass moment of the first vibration exciter is greater than that of the second vibration exciter; if the real-time vibration direction angle is smaller than the preset vibration direction angle, reducing the driving rotating speed of the first motor through the speed regulator; and if the real-time vibration direction angle is larger than the preset vibration direction angle, increasing the driving rotating speed of the first motor through the speed regulator.
In the embodiment of the invention, the first vibration exciter rotates anticlockwise, the second vibration exciter rotates clockwise, and the eccentric mass moment of the first vibration exciter is greater than that of the second vibration exciter; if the real-time vibration direction angle is smaller than the preset vibration direction angle, increasing the driving rotating speed of the second motor through the speed regulator; and if the real-time vibration direction angle is larger than the preset vibration direction angle, reducing the driving rotating speed of the second motor through the speed regulator.
In the embodiment of the invention, the first vibration exciter rotates anticlockwise, the second vibration exciter rotates clockwise, and the eccentric mass moment of the first vibration exciter is greater than that of the second vibration exciter; if the real-time vibration direction angle is smaller than the preset vibration direction angle, reducing the driving rotating speed of the first motor and increasing the driving rotating speed of the second motor through the speed regulator; and if the real-time vibration direction angle is larger than the preset vibration direction angle, increasing the driving rotating speed of the first motor and reducing the driving rotating speed of the second motor through the speed regulator.
In the technical scheme of the embodiment of the invention, an acceleration sensor arranged on a vibrator body detects a vibration signal of the vibrator in real time, a controller acquires a real-time vibration direction angle according to the vibration signal from the acceleration sensor, compares the real-time vibration direction angle of the vibrator with a preset vibration direction angle, and outputs a speed regulation signal to a speed regulator according to a comparison result, and the speed regulator further controls a first motor and/or a second motor to change a driving rotating speed according to the speed regulation signal so as to regulate the vibration of the first vibration exciter and the second vibration exciter, so that the real-time vibration direction angle of the self-synchronizing elliptical vibrator is close to the preset vibration direction angle expected by a user. Therefore, the method for adjusting the vibration direction angle of the self-synchronizing elliptical vibrating machine provided by the invention can be suitable for adjusting the vibration direction angle of materials with different properties during screening, namely, the optimal vibration direction angle is provided for the screening of the materials with different properties, the screening efficiency and flexibility of the double-machine driven self-synchronizing elliptical vibrating machine in actual production are improved, and the self-synchronizing theory and the engineering actual production are supplemented.
The invention provides a self-synchronizing elliptical vibrating machine capable of adjusting the vibration direction angle, comprising: the vibration machine comprises a vibration machine body, a controller, a speed regulator, a first motor, a second motor, an acceleration sensor, a first vibration exciter and a second vibration exciter, wherein the first vibration exciter and the second vibration exciter are respectively driven by the first motor and the second motor; the acceleration sensor is arranged on the vibrating machine body and inputs a detected vibration signal into the controller; the controller acquires a real-time vibration direction angle according to the vibration signal, compares the real-time vibration direction angle with a preset vibration direction angle, and outputs a speed regulation signal to the speed regulator according to a comparison result; and the speed regulator controls the first motor and/or the second motor to change the driving rotating speed according to the speed regulating signal, so as to regulate the real-time vibration direction angle.
In the technical scheme of the embodiment of the invention, an acceleration sensor arranged on a vibrator body detects a vibration signal of the vibrator in real time, a controller acquires a real-time vibration direction angle according to the vibration signal from the acceleration sensor, compares the real-time vibration direction angle of the vibrator with a preset vibration direction angle, and outputs a speed regulation signal to a speed regulator according to a comparison result, and the speed regulator further controls a first motor and/or a second motor to change a driving rotating speed according to the speed regulation signal so as to regulate the vibration of the first vibration exciter and the second vibration exciter, so that the real-time vibration direction angle of the self-synchronizing elliptical vibrator is close to the preset vibration direction angle expected by a user. Therefore, the self-synchronizing elliptical vibrating machine provided by the invention can be suitable for adjusting the vibration direction angle of materials with different properties during screening, namely, the optimal vibration direction angle is provided for screening the materials with different properties, the screening efficiency and flexibility of the double-machine driven self-synchronizing elliptical vibrating machine in actual production are improved, and the self-synchronizing theory and the engineering actual production are supplemented.
Drawings
FIG. 1 is an overall installation schematic of an embodiment of the present invention;
FIG. 2 is a flow chart of a method for adjusting the vibration direction angle of a synchronous elliptical vibration machine according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a synchronous elliptical vibratory machine according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for adjusting the vibration azimuth angle of the synchronous elliptical vibration machine according to an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention before adjustment of the oscillation azimuth angle;
FIG. 6 is a schematic view of an embodiment of the present invention after adjustment of the oscillation azimuth angle;
fig. 7 is a schematic diagram of the embodiment of the invention after the adjustment of the vibration direction angle.
Detailed Description
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
Referring to fig. 1, the synchronous elliptical vibrator according to the embodiment of the present invention may include a vibrator body 1, a controller 2, a speed governor 3, a first motor 4a, a second motor 4b, a first exciter 5a, a second exciter 5b, and an acceleration sensor 6. Wherein the controller 2 is connected with the speed regulator 3 and the acceleration sensor 6; the first exciter 5a and the second exciter 5b are driven by a first motor 4a and a second motor 4b, respectively.
During the operation of the synchronous elliptical vibration machine, the acceleration sensor 6 can input a detected vibration signal into the controller 2; the controller 2 acquires a real-time vibration direction angle according to the vibration signal, compares the real-time vibration direction angle with a preset vibration direction angle, and outputs a speed regulation signal to the speed regulator 3 according to a comparison result; and then, the speed governor 3 controls the first motor 4a and/or the second motor 4b to change the driving rotating speed according to the speed governing signal, so as to adjust the real-time vibration direction angle.
The motor only drives the vibration exciter to rotate, the motor drives the vibration exciter to rotate through a belt or directly drives the vibration exciter to rotate through a coupler, so that the adjustment of the vibration direction angle can be realized, and the effects of the two transmission modes are completely the same.
The vibration direction angle is an included angle between the long axis direction of the elliptic track displayed in the running process of the vibrator and the screen surface, which is acquired in an experiment.
Because the vibration direction angle at the mass center of the vibrator needs to be monitored, the whole mass center of the vibrator is located in the vibrator, so that a sensor and other equipment are not convenient to mount, and only the vibration track of the vibrator on the XOZ plane is actually concerned in field production. Therefore, preferably, the acceleration sensor 6 can be arranged at the projection of the mass center of the vibrator body on the side plate of the shell to monitor the vibration track of the vibrator in the XOZ plane.
In engineering, the acceleration sensor 6 is used for detecting the vibration state of the synchronous elliptical vibration machine, and specifically, the following two embodiments may be implemented:
the first mode is as follows:
the acceleration sensor 6 may be a three-axis acceleration sensor, that is, vibration information in the X-axis, Y-axis, and Z-axis directions may be acquired. At this time, the controller 2 may choose to acquire the real-time vibration direction angle only from the vibration signals of the X-axis and the Z-axis among them, while ignoring the vibration signal of the Y-axis. The vibration signal of the X axis represents the vibration information of the mass center of the vibrator body in the horizontal direction, and the vibration signal of the Z axis represents the vibration information of the mass center of the vibrator body in the vertical direction.
The second mode is as follows:
the acceleration sensor 6 may be two single-axis sensors disposed on the X-axis and the Z-axis, respectively. Wherein the X-axis represents a horizontal direction of a mass center of the vibrator body, and the Z-axis represents a vertical direction of the mass center of the vibrator body.
During the adjustment, the synchronous elliptical vibration machine changes from one synchronous steady state to another synchronous steady state, which requires that the absolute difference between the first motor and the second motor is less than a preset threshold. Once the absolute difference value of the first motor and the second motor exceeds the preset threshold value, the synchronous elliptical vibration machine is synchronously unstable, and the vibration track is no longer a stable elliptical track.
The following embodiments are possible for the adjustment of the "vibration direction angle" of the synchronous elliptical vibration machine.
Example one
Fig. 2 is a method for adjusting the vibration direction angle of the synchronous elliptical vibration machine in the embodiment of the present invention, and the specific adjustment steps are as follows:
step 201: and initializing the double-machine driven self-synchronizing elliptical vibrating machine to enable the double-machine driven self-synchronizing elliptical vibrating machine to meet the synchronous stability condition.
In the present embodiment, the specifications of the first motor 4a and the second motor 4b are set to be the same. When the self-synchronizing elliptical vibration machine is started, the rotation speeds of the first motor 4a and the second motor 4b are set to be the same, and the first motor 4a is set to rotate counterclockwise and the second motor 4b is set to rotate clockwise, that is, the first vibration exciter 5a is driven to rotate counterclockwise and the second vibration exciter 5b is driven to rotate clockwise. Moreover, the eccentric mass moment of the first exciter 5a is greater than the eccentric mass moment of the second exciter 5 b.
step 202: under the synchronous stable operation of the self-synchronizing elliptical vibrating machine, the controller acquires a vibration signal of the vibrating machine body through the acceleration sensor and acquires a real-time vibration direction angle according to the vibration signal.
step 203: and the controller compares the real-time vibration direction angle with a preset vibration direction angle and outputs a speed regulating signal to the speed regulator according to a comparison result.
Specifically, the controller may include an information acquisition module and a control module, the manipulation in step2 is actually realized by the "information acquisition module", and the manipulation in step2 is realized by the "control module".
step 204: and the speed regulator controls the first motor and/or the second motor to change the driving rotating speed according to the speed regulating signal, so as to regulate the real-time vibration direction angle.
In this step, specifically, the speed controller may control the first motor, or control the second motor, or control both the first motor and the second motor according to the speed regulation signal to change the driving rotation speed, so as to adjust the real-time vibration direction angle.
In the first case: the speed regulator is only connected with the first motor 4a and is not connected with the second motor 4b, and if the real-time vibration direction angle is smaller than the preset vibration direction angle, the driving rotating speed of the first motor 4a is reduced through the speed regulator; and if the real-time vibration direction angle is larger than the preset vibration direction angle, increasing the driving rotating speed of the first motor through the speed regulator.
In the second case: a similar arrangement to that of fig. 3 is used, except that the speed governor is no longer connected to the first motor, but only to the second motor (not shown), i.e. the adjustment of the oscillation azimuth angle is effected by the second motor 4 b. If the real-time vibration direction angle is smaller than the preset vibration direction angle, the driving rotating speed of the second motor 4b is increased through the speed regulator; and if the real-time vibration direction angle is larger than the preset vibration direction angle, reducing the driving rotating speed of the second motor 4b through the speed regulator.
In the third case: like the arrangement of fig. 3, the speed regulator can be connected not only to the first motor but also to the second motor (not shown) at the same time, i.e. the adjustment of the vibration direction angle is achieved by adjusting the driving rotational speeds of the first motor 4a and the second motor 4b at the same time. If the real-time vibration direction angle is smaller than the preset vibration direction angle, reducing the driving rotating speed of the first motor 4a and increasing the driving rotating speed of the second motor 4b through the speed regulator; and if the real-time vibration direction angle is larger than the preset vibration direction angle, increasing the driving rotating speed of the first motor 4a and reducing the driving rotating speed of the second motor 4b through the speed regulator.
Fig. 4 is a flowchart of a method for adjusting the vibration direction angle according to the structural diagram of fig. 3, which specifically includes:
step 401: initializing the self-synchronizing elliptical vibrating machine, and ensuring the synchronous and stable operation of the self-synchronizing elliptical vibrating machine.
Step 402: the preset vibration direction angle is set to a 0.
Step 403: the real-time vibration direction angle a1 is detected.
Step 404: and judging whether a1 and a0 are equal.
If they are equal, step403 is returned. If not, proceed to step 405.
Step 405: it is further determined whether a1 is greater than a 0.
If yes, proceed to step 406: adjusting the driving speed of the first motor 4a to increase;
if not, step407 is performed: adjusting the driving speed of the first motor 4a to decrease.
FIGS. 5-7 are further illustrations of embodiments of the present invention based on experimental data. Initially, the first vibration exciter 5a of the self-synchronizing elliptical vibration machine rotates counterclockwise, the second vibration exciter 5b rotates clockwise, and the rotation speeds of the first vibration exciter 5a and the second vibration exciter 5b are the same and are both 1000 r/min. Meanwhile, the eccentric mass moment of the first exciter 5a is smaller than that of the second exciter 5 b. After the system is stabilized, the two vibration exciters realize self-synchronous operation, and the vibration track of the mass center of the experiment table of the synchronous elliptical vibration machine is shown in figure 5.
After the system stably and synchronously operates, the rotating speed of the second vibration exciter 5b is kept unchanged at 1000r/min, the output rotating speed of the first motor 4a is increased through the speed regulator, when the output rotating speed of the first vibration exciter 5a is controlled to be increased from 1000r/min to 1017r/min and 1024r/min, the system can still keep self-synchronizing and stable operation, and the track of the mass center of the test table of the measuring vibration machine is an ellipse. However, as can be seen from the experimental results, the first motor 4a gradually decreases the vibration direction angle as the driving rotation speed of the governor output increases, as shown in fig. 7. On the contrary, when the output rotation speed of the first vibration exciter 5a is controlled to be reduced from 1000r/min to 996r/min and 992r/min, the vibration direction angle is gradually increased.
In the experimental process, the vibration system can keep the self-synchronous motion state all the time, and after the output rotating speed of the speed regulator 3 is changed, although the original self-synchronous state is changed, the whole system establishes a new self-synchronous motion state. And the small change of the speed of the vibration exciter can cause the large change of the vibration direction angle.
Therefore, the method for adjusting the vibration direction angle of the self-synchronizing elliptical vibrating machine provided by the invention can be suitable for adjusting the vibration direction angle of materials with different properties during screening, namely, the optimal vibration direction angle is provided for the screening of the materials with different properties, the screening efficiency and flexibility of the double-machine driven self-synchronizing elliptical vibrating machine in actual production are improved, and the self-synchronizing theory and the engineering actual production are supplemented.
Example two
In the present embodiment, the specifications of the first motor 4a and the second motor 4b are set to be the same. When the self-synchronizing elliptical vibration machine is started, the rotating speeds of the first motor 4a and the second motor 4b are set to be the same, and the directions are set to be opposite, specifically, the first vibration exciter 5a rotates anticlockwise, and the second vibration exciter 5b rotates clockwise.
If the eccentric mass moment of the first exciter 5a is changed to be smaller than the eccentric mass moment of the second exciter 5b, the major axis of the elliptical orbit of the vibration direction angle of the vibrator is positionally changed with respect to the major axis of the elliptical orbit in fig. 5, i.e., is positioned on the other side of the major axis of the elliptical orbit with respect to the vertical direction in fig. 5. Accordingly, by changing the eccentric mass moment of the first exciter 5a to be smaller than that of the second exciter 5b and symmetrically with respect to the case of the first embodiment, the major axis of the elliptical path of the vibration direction angle of the vibrator and the major axis of the elliptical path in fig. 5 are "symmetrical" with respect to the vertical direction. At this time, the manner of adjusting the vibration direction angle in real time by controlling the first motor and/or the second motor is opposite to that of the first embodiment. For example, if the speed governor is connected to only the first motor 4a and not connected to the second motor 4b, if the real-time vibration direction angle is smaller than the preset vibration direction angle, the driving rotation speed of the first motor 4a is increased by the speed governor; and if the real-time vibration direction angle is larger than the preset vibration direction angle, reducing the driving rotating speed of the first motor 4a through the speed regulator.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method of adjusting a vibration azimuth angle of a self-synchronizing elliptical vibration machine, the self-synchronizing elliptical vibration machine comprising: the vibration machine comprises a vibration machine body, a controller, a speed regulator, a first motor, a second motor, an acceleration sensor, a first vibration exciter and a second vibration exciter, wherein the first vibration exciter and the second vibration exciter are respectively driven by the first motor and the second motor; wherein the content of the first and second substances,
the acceleration sensor is arranged at the projection of the mass center of the vibrator body on the side plate of the shell to monitor the vibration track of the vibrator, and the detected vibration signal is input into the controller; the controller acquires a real-time vibration direction angle according to the vibration signal, compares the real-time vibration direction angle with a preset vibration direction angle, and outputs a speed regulation signal to the speed regulator according to a comparison result; and the speed regulator controls the first motor and/or the second motor to change the driving rotating speed according to the speed regulating signal, so as to regulate the real-time vibration direction angle.
2. The method of adjusting the vibration azimuth angle of a self-synchronizing elliptical vibration machine according to claim 1, characterized in that the acceleration sensor is a three-axis acceleration sensor;
the controller acquires a real-time vibration direction angle according to vibration signals of an X axis and a Z axis from the three-axis acceleration sensor; the vibration signal of the X axis represents the vibration information of the mass center of the vibrator body in the horizontal direction, and the vibration signal of the Z axis represents the vibration information of the mass center of the vibrator body in the vertical direction.
3. The method of adjusting a vibration azimuth angle of a self-synchronizing elliptical vibration machine according to claim 1, characterized in that the acceleration sensor comprises two single-axis sensors disposed on an X-axis and a Z-axis, respectively; wherein the X-axis represents a horizontal direction of a mass center of the vibrator body, and the Z-axis represents a vertical direction of the mass center of the vibrator body.
4. The method of adjusting a vibration azimuth angle of a self-synchronizing elliptical vibration machine according to claim 1, characterized in that the absolute difference value of the first motor and the second motor is less than a preset threshold value.
5. The method of adjusting a vibration azimuth angle of a self-synchronizing elliptical vibration machine according to any of claims 1-4, characterized in that the first motor and the second motor are of the same specification, are of the same rotation speed and are of opposite directions; and the number of the first and second groups,
the eccentric mass moments of the first vibration exciter and the second vibration exciter are different.
6. The method of adjusting a vibration direction angle of a self-synchronizing elliptical vibration machine according to claim 5, characterized in that the first exciter rotates counterclockwise, the second exciter rotates clockwise, and the eccentric mass moment of the first exciter is larger than that of the second exciter;
if the real-time vibration direction angle is smaller than the preset vibration direction angle, reducing the driving rotating speed of the first motor through the speed regulator;
and if the real-time vibration direction angle is larger than the preset vibration direction angle, increasing the driving rotating speed of the first motor through the speed regulator.
7. The method of adjusting a vibration direction angle of a self-synchronizing elliptical vibration machine according to claim 5, characterized in that the first exciter rotates counterclockwise, the second exciter rotates clockwise, and the eccentric mass moment of the first exciter is larger than that of the second exciter;
if the real-time vibration direction angle is smaller than the preset vibration direction angle, increasing the driving rotating speed of the second motor through the speed regulator;
and if the real-time vibration direction angle is larger than the preset vibration direction angle, reducing the driving rotating speed of the second motor through the speed regulator.
8. The method of adjusting a vibration direction angle of a self-synchronizing elliptical vibration machine according to claim 5, characterized in that the first exciter rotates counterclockwise, the second exciter rotates clockwise, and the eccentric mass moment of the first exciter is larger than that of the second exciter;
if the real-time vibration direction angle is smaller than the preset vibration direction angle, reducing the driving rotating speed of the first motor and increasing the driving rotating speed of the second motor through the speed regulator;
and if the real-time vibration direction angle is larger than the preset vibration direction angle, increasing the driving rotating speed of the first motor and reducing the driving rotating speed of the second motor through the speed regulator.
9. A self-synchronizing elliptical vibrating machine capable of adjusting the direction angle of vibration, comprising: the vibration machine comprises a vibration machine body, a controller, a speed regulator, a first motor, a second motor, an acceleration sensor, a first vibration exciter and a second vibration exciter, wherein the first vibration exciter and the second vibration exciter are respectively driven by the first motor and the second motor; wherein the content of the first and second substances,
the acceleration sensor is arranged at the projection of the mass center of the vibrator body on the side plate of the shell to monitor the vibration track of the vibrator, and the detected vibration signal is input into the controller; the controller acquires a real-time vibration direction angle according to the vibration signal, compares the real-time vibration direction angle with a preset vibration direction angle, and outputs a speed regulation signal to the speed regulator according to a comparison result; and the speed regulator controls the first motor and/or the second motor to change the driving rotating speed according to the speed regulating signal, so as to regulate the real-time vibration direction angle.
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| US6513664B1 (en) * | 2001-04-18 | 2003-02-04 | M-I, L.L.C. | Vibrating screen separator |
| CN2545356Y (en) * | 2002-05-13 | 2003-04-16 | 华北石油管理局第一机械厂装备分厂 | Self-synchronous Translation elliptic vibrating screen |
| US7571817B2 (en) * | 2002-11-06 | 2009-08-11 | Varco I/P, Inc. | Automatic separator or shaker with electromagnetic vibrator apparatus |
| US8312995B2 (en) * | 2002-11-06 | 2012-11-20 | National Oilwell Varco, L.P. | Magnetic vibratory screen clamping |
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2017
- 2017-10-16 CN CN201710960183.5A patent/CN107812708B/en active Active
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