CN210142455U - Dynamic balance simulation experiment device - Google Patents
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- CN210142455U CN210142455U CN201920396731.0U CN201920396731U CN210142455U CN 210142455 U CN210142455 U CN 210142455U CN 201920396731 U CN201920396731 U CN 201920396731U CN 210142455 U CN210142455 U CN 210142455U
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Abstract
The utility model provides a dynamic balance simulation experiment device, the on-line screen storage device comprises a base, rotate the pivot of connection on the base, set up on the base and be used for driving pivot pivoted actuating mechanism, fixed cover locates changeing epaxial counterweight plate, a plurality of counterweight positions that set up on the counterweight plate and lay along the circumference interval of counterweight plate, a balancing weight for installing on counterweight position so that when the pivot rotates produce radial vibration or eliminate radial vibration, set up on the base and be used for measuring and show radial vibration's vibration value so that carry out the vibration measurement mechanism that dynamic balance calculated and set up on actuating mechanism and be used for measuring and show the phase angle that the vibration value corresponds so that carry out the angle measurement mechanism that dynamic balance calculated. The utility model discloses a dynamic balance simulation experiment device can simulate on-the-spot gas turbine and carry out dynamic balance analysis and calculation, can explain on-the-spot dynamic balance analysis and calculation to the people through the device, can let the people understand and master on-the-spot dynamic balance analysis and calculation better.
Description
Technical Field
The utility model relates to a dynamic balance analysis and calculation technical field especially relate to a dynamic balance simulation experiment device.
Background
Vibration problems of gas turbines often occur and dynamic balancing of the gas turbine is required. The existing dynamic balance analysis and calculation are mainly performed by a dynamic balancing machine before the gas turbine assembly is completed, and the whole dynamic balance of the gas turbine assembly cannot be completed on the dynamic balancing machine after the gas turbine assembly is completed, and can only be performed on site.
The dynamic balance machine performs dynamic balance analysis on the rotor independently, the calculation method of the dynamic balance machine is inconsistent with the calculation method of the field dynamic balance, people cannot understand the field dynamic balance analysis and calculation, and field training and teaching of the dynamic balance analysis and calculation are inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dynamic balance simulation experiment device to solve the inconvenient field training and the problem of teaching of going forward dynamic balance analysis and calculation of current dynamic balancing machine.
The utility model adopts the technical scheme as follows:
the utility model provides a dynamic balance simulation experiment device, the on-line screen storage device comprises a base, rotate the pivot of connection on the base, set up on the base and be used for driving pivot pivoted actuating mechanism, fixed cover locates the epaxial counterweight disc of commentaries on classics, a plurality of counterweight positions that set up on the counterweight disc and lay along the circumference interval of counterweight disc, a balancing weight for installing on counterweight position so that the pivot produces radial vibration or eliminate radial vibration when rotating, set up on the base and be used for measuring and showing the vibration value of radial vibration so that carry out the vibration measuring mechanism that dynamic balance calculated and set up on actuating mechanism and be used for measuring and show the phase angle that the vibration value corresponds so that carry out the angle measuring mechanism that dynamic balance calculated.
Further, the vibration measuring mechanism comprises a vibration sensor mounting seat arranged on the base, a vibration sensor arranged on the vibration sensor mounting seat and used for measuring and feeding back the vibration value of radial vibration, and a vibration measuring instrument connected with the vibration sensor and used for collecting and displaying the vibration value fed back by the vibration sensor so as to perform dynamic balance calculation.
Furthermore, the vibration sensor mounting seat is arranged around the rotating shaft, and a plurality of mounting holes for mounting the vibration sensor are formed in the vibration sensor mounting seat along the radial direction of the rotating shaft; the vibration sensor mounting seats are arranged in a plurality of numbers, and the vibration sensor mounting seats are arranged at intervals along the axial direction of the rotating shaft.
Further, actuating mechanism is including setting up the motor mount pad on the base and setting up on the motor mount pad and the motor of being connected with the pivot.
Further, the angle measuring mechanism comprises an angle sensor mounting seat arranged on the motor, an angle sensor arranged on the angle sensor mounting seat and used for measuring a phase angle corresponding to the feedback vibration value, a measurement angle notch arranged on the rotating shaft and used for being matched with the angle sensor to measure, and a vibration measuring instrument connected with the angle sensor and used for collecting and displaying the phase angle fed back by the angle sensor so as to perform dynamic balance calculation.
Furthermore, the dynamic balance simulation experiment device also comprises a rotating speed adjusting mechanism for adjusting the rotating speed of the motor; the rotating speed adjusting mechanism comprises a rotating speed sensor mounting seat arranged on the motor, a rotating speed sensor arranged on the rotating speed sensor mounting seat and used for measuring and feeding back the rotating speed of the rotating shaft, a speed measuring gear fixedly sleeved on the rotating shaft and used for being matched with the rotating speed sensor to measure, and a rotating speed controller respectively connected with the rotating speed sensor and the motor and used for collecting the rotating speed fed back by the rotating speed sensor and the rotating speed of the adjusting motor.
Furthermore, a plurality of bearing installation seats are arranged on the base at intervals along the axial direction of the rotating shaft, bearings are arranged on the bearing installation seats, and two ends of the rotating shaft penetrate through the bearings of the bearing installation seats respectively.
Furthermore, a plurality of fixing holes distributed at intervals along the axial direction of the rotating shaft are formed in the base, and the vibration sensor mounting seat, the motor mounting seat and the bearing mounting seat are fixed on the fixing holes.
Furthermore, the counterweight position adopts a counterweight hole arranged on the counterweight plate, and scales for marking angles are arranged on the counterweight plate corresponding to the counterweight hole.
Furthermore, a protective cover for preventing parts on the rotating shaft from falling off when the rotating shaft rotates is rotatably connected to the base; the protective covers are arranged in a plurality of numbers, and the protective covers are arranged at intervals along the axial direction of the rotating shaft.
The utility model discloses following beneficial effect has:
the utility model discloses a dynamic balance simulation experiment device, including base, pivot, actuating mechanism, counter weight dish, counter weight position, balancing weight, vibration measurement mechanism and angle measurement mechanism. The base forms a bottom support, which can ensure the stability of the device. The rotating shaft is rotatably connected to the base, the counterweight plate is fixedly sleeved on the rotating shaft, and the driving mechanism can drive the rotating shaft to rotate so that the rotating shaft drives the counterweight plate to rotate. The counterweight plate is provided with a plurality of counterweight positions which are distributed at intervals along the circumferential direction of the counterweight plate, so that the counterweight plate is provided with a plurality of counterweight positions at different angles. When all the counterweight positions are empty, the rotating shaft rotates in a balanced state. The rotary shaft generates radial vibration by installing a balancing weight with unknown weight on a certain balancing position, and the vibration of the gas turbine on site is simulated. And measuring and displaying the vibration value of the radial vibration by a vibration measuring mechanism, and measuring and displaying a phase angle corresponding to the vibration value by an angle measuring mechanism so as to calculate the dynamic balance. And finally, mounting a balancing weight with proper weight on a balancing position with proper angle according to a dynamic balance calculation result, eliminating radial vibration of the rotating shaft, and enabling the rotating shaft to reach a balanced state again to complete dynamic balance. The utility model discloses a dynamic balance simulation experiment device can simulate on-the-spot gas turbine and carry out dynamic balance analysis and calculation, can explain on-the-spot dynamic balance analysis and calculation to the people through the device, can let the people understand better and master on-the-spot dynamic balance analysis and calculation, is convenient for carry out the on-the-spot training and the teaching of dynamic balance analysis and calculation.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic perspective view of a dynamic balance simulation experiment apparatus according to a preferred embodiment of the present invention;
fig. 2 is a front view of a dynamic balance simulation experiment apparatus according to a preferred embodiment of the present invention;
fig. 3 is a top view of the dynamic balance simulation experiment apparatus according to the preferred embodiment of the present invention;
fig. 4 is a schematic diagram of a dynamic balance analysis and calculation method according to a first preferred embodiment of the present invention;
fig. 5 is a second schematic diagram of a dynamic balance analysis and calculation method according to the first preferred embodiment of the present invention;
fig. 6 is a schematic diagram of a dynamic balance analysis and calculation method according to a second preferred embodiment of the present invention.
Description of reference numerals:
1. a base; 2. a rotating shaft; 3. a weight plate; 4. a vibration sensor mount; 5. a vibration sensor; 6. mounting holes; 7. a motor mounting seat; 8. a motor; 9. an angle sensor mount; 10. an angle sensor; 11. measuring an angle gap; 12. a rotation speed sensor mounting base; 13. a rotational speed sensor; 14. a speed measuring gear; 15. a bearing mount; 16. a fixing hole; 17. a weight port; 18. a shield.
Detailed Description
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 present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic perspective view of a dynamic balance simulation experiment apparatus according to a preferred embodiment of the present invention; fig. 2 is a front view of a dynamic balance simulation experiment apparatus according to a preferred embodiment of the present invention; fig. 3 is a top view of the dynamic balance simulation experiment apparatus according to the preferred embodiment of the present invention; fig. 4 is a schematic diagram of a dynamic balance analysis and calculation method according to a first preferred embodiment of the present invention; fig. 5 is a second schematic diagram of a dynamic balance analysis and calculation method according to the first preferred embodiment of the present invention; fig. 6 is a schematic diagram of a dynamic balance analysis and calculation method according to a second preferred embodiment of the present invention.
As shown in fig. 1, fig. 2 and fig. 3, the dynamic balance simulation experiment apparatus of the present embodiment includes a base 1, a rotating shaft 2 rotatably connected to the base 1, a driving mechanism disposed on the base 1 and used for driving the rotating shaft 2 to rotate, a weight plate 3 fixedly sleeved on the rotating shaft 2, a plurality of weight positions disposed on the weight plate 3 and arranged along a circumferential direction of the weight plate 3 at intervals, a weight block for being mounted on the weight position to generate radial vibration or eliminate the radial vibration when the rotating shaft 2 rotates, a vibration measuring mechanism disposed on the base 1 and used for measuring and displaying a vibration value of the radial vibration so as to perform dynamic balance calculation, and an angle measuring mechanism disposed on the driving mechanism and used for measuring and displaying a phase angle corresponding to the vibration value so as to perform dynamic balance calculation.
The utility model discloses a dynamic balance simulation experiment device, including base 1, pivot 2, actuating mechanism, counter weight disc 3, counter weight position, balancing weight, vibration measurement mechanism and angle measurement mechanism. The base 1 forms a bottom support that ensures the stability of the device. The rotating shaft 2 is rotatably connected to the base 1, the counterweight plate 3 is fixedly sleeved on the rotating shaft 2, and the driving mechanism can drive the rotating shaft 2 to rotate so that the rotating shaft 2 drives the counterweight plate 3 to rotate. The counterweight plate 3 is provided with a plurality of counterweight positions which are distributed at intervals along the circumferential direction of the counterweight plate 3, so that the counterweight plate 3 is provided with a plurality of counterweight positions at different angles. When all the counterweight positions are empty, the rotating shaft 2 rotates in a balanced state. The rotating shaft 2 generates radial vibration by installing a balancing weight with unknown weight on a certain balancing position, and the vibration of the gas turbine on site is simulated. And measuring and displaying the vibration value of the radial vibration by a vibration measuring mechanism, and measuring and displaying a phase angle corresponding to the vibration value by an angle measuring mechanism so as to calculate the dynamic balance. And finally, mounting a counterweight block with proper weight on a counterweight position with proper angle according to a dynamic balance calculation result, eliminating radial vibration of the rotating shaft 2, and enabling the rotating shaft 2 to reach a balance state again to complete dynamic balance. The utility model discloses a dynamic balance simulation experiment device can simulate on-the-spot gas turbine and carry out dynamic balance analysis and calculation, can explain on-the-spot dynamic balance analysis and calculation to the people through the device, can let the people understand better and master on-the-spot dynamic balance analysis and calculation, is convenient for carry out the on-the-spot training and the teaching of dynamic balance analysis and calculation. Optionally, the vibration value is a vibration peak-to-peak value.
As shown in fig. 1, 2 and 3, in the present embodiment, the vibration measuring mechanism includes a vibration sensor mounting seat 4 disposed on the base 1, a vibration sensor 5 disposed on the vibration sensor mounting seat 4 and used for measuring and feeding back a vibration value of radial vibration, and a vibration measuring instrument connected to the vibration sensor 5 and used for collecting and displaying the vibration value fed back by the vibration sensor 5 so as to perform dynamic balance calculation. Vibration sensor 5 is through measuring the distance change between vibration sensor 5 and the pivot 2, can obtain the vibration value of the radial vibration of pivot 2 through the calculation, and vibration measuring apparatu is connected with vibration sensor 5, and vibration measuring apparatu can gather the vibration value of vibration sensor 5 feedback and show on the display screen to carry out dynamic balance and calculate. Alternatively, the vibration sensor 5 employs an eddy current sensor or a hall sensor.
As shown in fig. 1, 2 and 3, in the present embodiment, the vibration sensor mounting seat 4 is disposed around the rotating shaft 2, and a plurality of mounting holes 6 for mounting the vibration sensor 5 are formed in the vibration sensor mounting seat 4 along the radial direction of the rotating shaft 2. The vibration sensor mounting seat 4 is arranged around the rotating shaft 2, and the mounting hole 6 is arranged on the vibration sensor mounting seat 4 along the radial direction of the rotating shaft 2, so that the vibration sensor 5 arranged on the mounting hole 6 is aligned with the rotating shaft 2 along the radial direction of the rotating shaft 2, and the vibration value of the radial vibration of the rotating shaft 2 can be measured. A plurality of mounting holes 6 are formed, so that a plurality of vibration sensors 5 can be mounted for simultaneous measurement, and the measurement reliability is ensured. Alternatively, the vibration sensor mounting seat 4 is provided in plurality, and the plurality of vibration sensor mounting seats 4 are arranged at intervals in the axial direction of the rotating shaft 2. Different axial position produces on the pivot 2 the radial vibration's of difference size, and vibration sensor mount pad 4 sets up to a plurality ofly, can install vibration sensor 5 on the vibration sensor mount pad 4 of difference so that carry out dynamic balance analysis and calculation under the vibration condition of difference, can let the people grasp on-the-spot dynamic balance analysis and calculation better.
As shown in fig. 1, fig. 2 and fig. 3, in the present embodiment, the driving mechanism includes a motor mounting seat 7 disposed on the base 1 and a motor 8 disposed on the motor mounting seat 7 and connected to the rotating shaft 2. The motor 8 is installed on the motor mount pad 7, and the motor 8 drive pivot 2 rotates, makes pivot 2 drive the weight plate 3 and rotates. Alternatively, the driving mechanism employs a stepping motor or a servo motor.
As shown in fig. 1, 2 and 3, in the present embodiment, the angle measuring mechanism includes an angle sensor mounting seat 9 disposed on the motor 8, an angle sensor 10 disposed on the angle sensor mounting seat 9 and used for measuring a phase angle corresponding to the feedback vibration value, a measurement angle notch 11 opened on the rotating shaft 2 and used for cooperating with the angle sensor 10 to perform measurement, and a vibration measuring instrument connected to the angle sensor 10 and used for collecting and displaying the phase angle fed back by the angle sensor 10 so as to perform dynamic balance calculation. The angle sensor 10 can measure the distance between the angle sensor 10 and the rotating shaft 2, the distance between the angle sensor 10 and the measurement angle notch 11 is larger than the distance between the angle sensor 10 and other positions on the rotating shaft 2, and the position of the measurement angle notch 11 can be identified according to the distance. When the vibration sensor 5 measures the vibration value of the radial vibration of the rotating shaft 2, the included angle between the position of the angle sensor 10 aligned on the rotating shaft 2 and the measurement angle notch 11 is the phase angle corresponding to the vibration value. The vibration measuring instrument is connected with the angle sensor 10, and the vibration measuring instrument can collect the phase angle fed back by the angle sensor 10 and display the phase angle on a display screen so as to calculate the dynamic balance. Alternatively, the angle sensor 10 employs an eddy current sensor or a hall sensor.
As shown in fig. 1, fig. 2, and fig. 3, in the present embodiment, the dynamic balance simulation experiment apparatus further includes a rotation speed adjustment mechanism for adjusting the rotation speed of the motor 8. The rotating speed adjusting mechanism can adjust the rotating speed of the motor 8, so that the motor 8 can drive the rotating shaft 2 to rotate to a set rotating speed. Optionally, the rotation speed adjusting mechanism includes a rotation speed sensor mounting seat 12 disposed on the motor 8, a rotation speed sensor 13 disposed on the rotation speed sensor mounting seat 12 and used for measuring and feeding back the rotation speed of the rotating shaft 2, a speed measurement gear 14 fixedly sleeved on the rotating shaft 2 and used for cooperating with the rotation speed sensor 13 to perform measurement, and a rotation speed controller respectively connected with the rotation speed sensor 13 and the motor 8 and used for acquiring the rotation speed fed back by the rotation speed sensor 13 and adjusting the rotation speed of the motor 8. The speed measuring gear 14 is fixedly sleeved on the rotating shaft 2, and the rotating shaft 2 drives the speed measuring gear 14 to rotate when rotating. The rotation speed sensor 13 can measure the distance between the rotation speed sensor 13 and the speed measuring gear 14, and the distance between the teeth of the rotation speed sensor 13 and the speed measuring gear 14 is smaller than the distance between the teeth grooves of the rotation speed sensor 13 and the speed measuring gear 14, so that the teeth of the speed measuring gear 14 can be identified. When the rotating shaft 2 drives the speed measuring gear 14 to rotate, the rotating speeds of the speed measuring gear 14 and the rotating shaft 2 can be obtained through calculation according to the number of teeth recognized by the speed sensor 13 within a period of time and the total number of teeth on the speed measuring gear 14. The rotation speed controller is respectively connected with the rotation speed sensor 13 and the motor 8, and the rotation speed controller can adjust the rotation speed of the motor 8 according to the rotation speed of the rotating shaft 2 fed back by the rotation speed sensor 13. Alternatively, the rotation speed sensor 13 employs an eddy current sensor or a hall sensor.
As shown in fig. 1, fig. 2 and fig. 3, in this embodiment, the base 1 is provided with a plurality of bearing installation seats 15 arranged at intervals along the axial direction of the rotating shaft 2, the bearing installation seats 15 are provided with bearings, and two ends of the rotating shaft 2 respectively penetrate through the bearings of the bearing installation seats 15. The bearing mounting seat 15 contains a bearing, and two ends of the rotating shaft 2 are fixed through the bearing.
As shown in fig. 1 and fig. 3, in this embodiment, a plurality of fixing holes 16 are formed in the base 1 and are arranged at intervals along the axial direction of the rotating shaft 2, and the vibration sensor mounting seat 4, the motor mounting seat 7, and the bearing mounting seat 15 are all fixed to the fixing holes 16. A plurality of fixing holes 16 are formed in the base 1, and the vibration sensor mounting seat 4, the motor mounting seat 7 and the bearing mounting seat 15 are fixed on the fixing holes 16 through bolts. A plurality of fixing holes 16 are arranged at intervals along the axial direction of the rotating shaft 2, so that the vibration sensor mounting seat 4, the motor mounting seat 7 and the bearing mounting seat 15 can be conveniently moved and added.
As shown in fig. 1, in the present embodiment, the weight position is a weight hole 17 opened on the weight plate 3, and a scale for indicating an angle is provided on the weight plate 3 corresponding to the position of the weight hole 17. The balancing weight is installed in the weight port 17, and the scale on the weight plate 3 can carry out the angle mark, is convenient for install the balancing weight in the weight port 17 of suitable angle. Alternatively, the weight holes 17 are bolt holes, and the weights are bolts. Alternatively, the weight ports 17 are arranged at regular intervals in the circumferential direction of the weight plate 3.
As shown in fig. 1, 2 and 3, in the present embodiment, a protective cover 18 for preventing the components on the rotating shaft 2 from coming off when the rotating shaft 2 rotates is rotatably connected to the base 1. Before the driving mechanism drives the rotating shaft 2 to rotate, the protective cover 18 is rotated to the periphery of each part, so that external protection can be performed, and the parts are prevented from falling off to hurt people when the rotating shaft 2 rotates. Alternatively, the shield 18 is provided in plural, and the plural shields 18 are arranged at intervals in the axial direction of the rotary shaft 2. The protective cover 18 should be positioned so as not to affect the rotation of the shaft 2 and the components on the shaft 2 and the measurements of the vibration measuring mechanism and the angle measuring mechanism.
During specific implementation, 16 weight ports 17 are formed in the weight plate 3 of the dynamic balance simulation experiment device, and the 16 weight ports 17 are uniformly distributed at intervals along the circumferential direction of the weight plate 3.
The dynamic balance analysis and calculation method I is characterized in that the dynamic balance calculation is carried out by taking a vibration value as a parameter:
1. after a counterweight block with unknown weight is installed in a certain counterweight hole 17, the motor 8 is adopted to drive the rotating shaft 2 to rotate to a set rotating speed, and the vibration value of the radial vibration of the rotating shaft 2 is measured at the moment: vi100 umPP. As shown in fig. 4, V is centered on the origin of coordinatesiA circle is drawn for the radius.
2. A weight of known weight, called the trial weight (the weight of the trial weight in this set of data is 1g), is installed in the weight port 17 at 0 °. Adopt motor 8 drive pivot 2 to rotate to the rotational speed of settlement, the vibration value of measuring the radial vibration of pivot 2 this moment is: v0143 umPP. As shown in fig. 4, with a coordinate axis of 0 ° and ViThe intersection point of the circles of the radii is the center of the circle and is V0A circle is drawn for the radius.
3. The test weight in the weight port 17 of 0 ° was taken out, and the test weight was mounted in the weight port 17 of 112.5 °. The motor 8 is adopted to drive the rotating shaft 2 to rotate to a set rotating speed, and the vibration value of the radial vibration of the rotating shaft 2 is measured to be V at the moment1152 umPP. As shown in fig. 4, at 112.5 deg. to ViThe intersection point of the circles of the radii is the center of the circle and is V1A circle is drawn for the radius.
4. The trial weight in the weight port 17 of 112.5 ° was taken out, and the trial weight was mounted in the weight port 17 of 247.5 °. The motor 8 is adopted to drive the rotating shaft 2 to rotate to a set rotating speed, and the diameter of the rotating shaft 2 at the momentVibration value to vibration is V 245 umPP. As shown in fig. 4, at 247.5 ° to ViThe intersection point of the circles of the radii is the center of the circle and is V2A circle is drawn for the radius.
5. At this time V0、V1And V2The three circles form an intersection, as shown in fig. 4, and the shaded portion is the intersection. Taking a point in the central area of the shaded part to connect with the origin of coordinates, wherein the line segment is marked as T1Measuring its length T by means of a ruler1When the angle ∠ theta is measured by a protractor at 60 deg., the weight M of the weight block to be mounted can be calculated (V) to be 246 deg.i/T1) The weight of the test weight is (100 ÷ 60) × 1 ≈ 1.67g, and the angle of the weight hole 17 for mounting the weight is ∠ θ ═ 246 °.
6. At this point ∠ θ is 246 ° without the appropriate weight port 17(225 ° < θ <247.5 °), since the vibration is a vector, the weight can be distributed into the appropriate weight port 17 by vector decomposition as shown in fig. 5, M1.67 g is distributed into the weight ports 17 at 225 ° (M2) and 270 ° (M3) M2 and M3 can be calculated by ruler measurement or looking directly at the figure that M2 is 3.5/6 × 1.67 × 1g and M3 is 3/6 × 1.67 × 0.8 g.
7. And taking out the test weight, installing the counterweight with the weight of 1g in the counterweight hole 17 with the temperature of 225 degrees, and installing the counterweight with the weight of 0.8g in the counterweight hole 17 with the temperature of 270 degrees. When the motor 8 is adopted to drive the rotating shaft 2 to rotate to the set rotating speed, the vibration value of the radial vibration of the rotating shaft 2 becomes very small (<20umPP), and the dynamic balance is completed.
And a second dynamic balance analysis and calculation method, which is used for performing dynamic balance calculation by taking the vibration value and the phase angle corresponding to the vibration value as parameters:
1. after a counterweight block with unknown weight is installed in a certain counterweight hole 17, the motor 8 is adopted to drive the rotating shaft 2 to rotate to a set rotating speed, and the vibration value of the radial vibration of the rotating shaft 2 is measured at the moment: v1130umPP, the vibration value corresponds to a phase angle of 44 °. As shown in FIG. 6, a line segment is drawn with the origin of coordinates as the starting point, the vibration value as the length, and the phase angle as the angle, and this line segment is marked as V1。
2. At any known location (45 in the set of data)Install the trial weight (the weight of trial weight is 2g) in the weight port 17, adopt motor 8 drive pivot 2 to rotate to the rotational speed of settlement, the vibration value of the radial vibration of measuring pivot 2 this moment is: v2170umPP, the vibration value corresponds to a phase angle of 94 °. As shown in FIG. 6, a line segment is drawn with the origin of coordinates as the starting point, the vibration value as the length, and the phase angle as the angle, and this line segment is marked as V2。
3. As shown in FIG. 6, V2To V1Is marked as T1. Measuring V with a ruler1＝325，T1＝330，V1And T1Angle @ ═ 81 °, weight M ═ V ═ of clump weight to be installed1/T1) The weight of the test weight is (325 ÷ 330) × 2 ≈ 2 g. With V1Based on V2To V1The direction of (d) is a turning direction turning angle @, and the angle of the weight port 17 for attaching the weight is θ 323 ° (44 ° turns counterclockwise by 81 °).
4. And (3) installing the balancing weight into the balancing weight hole 17 with a proper angle through the vector decomposition of the 6 th step and the 7 th step in the first dynamic balance analysis and calculation method, and finishing the dynamic balance.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dynamic balance simulation experiment device is characterized in that,
including base (1), rotate to be connected pivot (2) on base (1), set up in be used for the drive on base (1) pivot (2) pivoted actuating mechanism, fixed cover are located counterweight plate (3) on pivot (2), a plurality of set up in on counterweight plate (3) and follow counterweight plate (3)'s circumference interval is laid, is used for installing in on the counterweight position so that pivot (2) produce radial vibration or eliminate when rotating the balancing weight of radial vibration, set up in be used for measuring and show on base (1) the vibration measurement mechanism of the vibration value of radial vibration so that carry out dynamic balance calculation and set up in actuating mechanism is last and be used for measuring and showing the phase angle that the vibration value corresponds is so that carry out the angle measurement mechanism of dynamic balance calculation.
2. The dynamic balance simulation experiment device of claim 1,
the vibration measuring mechanism comprises a vibration sensor mounting seat (4) arranged on the base (1), a vibration sensor (5) arranged on the vibration sensor mounting seat (4) and used for measuring and feeding back the vibration value of the radial vibration, and a vibration measuring instrument connected with the vibration sensor (5) and used for collecting and displaying the vibration value fed back by the vibration sensor (5) so as to perform dynamic balance calculation.
3. The dynamic balance simulation experiment device of claim 2,
the vibration sensor mounting seat (4) is arranged around the rotating shaft (2), and a plurality of mounting holes (6) for mounting the vibration sensors (5) are formed in the vibration sensor mounting seat (4) along the radial direction of the rotating shaft (2);
the vibration sensor mounting seats (4) are arranged in a plurality of numbers, and the vibration sensor mounting seats (4) are arranged along the axial direction of the rotating shaft (2) at intervals.
4. The dynamic balance simulation experiment device of claim 2,
the driving mechanism comprises a motor mounting seat (7) arranged on the base (1) and a motor (8) arranged on the motor mounting seat (7) and connected with the rotating shaft (2).
5. The dynamic balance simulation experiment device of claim 4,
the angle measuring mechanism comprises an angle sensor mounting seat (9) arranged on the motor (8), an angle sensor (10) arranged on the angle sensor mounting seat (9) and used for measuring and feeding back a phase angle corresponding to the vibration value, a measurement angle notch (11) arranged on the rotating shaft (2) and used for being matched with the angle sensor (10) to measure, and a vibration measuring instrument connected with the angle sensor (10) and used for collecting and displaying the phase angle fed back by the angle sensor (10) so as to perform dynamic balance calculation.
6. The dynamic balance simulation experiment device of claim 4,
the dynamic balance simulation experiment device also comprises a rotating speed adjusting mechanism for adjusting the rotating speed of the motor (8);
speed adjusting mechanism including set up in tachometric sensor mount pad (12) on motor (8), set up in tachometric sensor mount pad (12) are gone up and are used for measuring and feedback tachometric sensor (13), the fixed cover of the rotational speed of pivot (2) are located pivot (2) are gone up and are used for with tachometric gear (14) and respectively with tachometric sensor (13) and motor (8) are connected and are used for gathering the rotational speed of tachometric sensor (13) feedback and regulation the rotational speed controller of the rotational speed of motor (8).
7. The dynamic balance simulation experiment device of claim 4,
the bearing installing seat is characterized in that a plurality of bearing installing seats (15) which are arranged along the axial direction of the rotating shaft (2) at intervals are arranged on the base (1), bearings are arranged on the bearing installing seats (15), and two ends of the rotating shaft (2) are respectively arranged on the bearings of the bearing installing seats (15) in a penetrating mode.
8. The dynamic balance simulation experiment device of claim 7,
the vibration sensor is characterized in that a plurality of fixing holes (16) distributed at intervals along the axial direction of the rotating shaft (2) are formed in the base (1), and the vibration sensor mounting seat (4), the motor mounting seat (7) and the bearing mounting seat (15) are fixed on the fixing holes (16).
9. The dynamic balance simulation experiment device of claim 1,
the counterweight position is provided with a counterweight hole (17) on the counterweight plate (3), and scales for marking angles are arranged on the counterweight plate (3) corresponding to the position of the counterweight hole (17).
10. The dynamic balance simulation experiment device according to any one of claims 1 to 9,
a protective cover (18) used for preventing parts on the rotating shaft (2) from falling off when the rotating shaft (2) rotates is rotatably connected to the base (1);
the protective covers (18) are arranged in a plurality, and the plurality of protective covers (18) are arranged at intervals along the axial direction of the rotating shaft (2).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132009A (en) * | 2022-05-20 | 2022-09-30 | 华能新华发电有限责任公司 | Simulated vibration training device |
| CN115132009B (en) * | 2022-05-20 | 2024-07-12 | 华能新华发电有限责任公司 | Simulated vibration training device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132009A (en) * | 2022-05-20 | 2022-09-30 | 华能新华发电有限责任公司 | Simulated vibration training device |
| CN115132009B (en) * | 2022-05-20 | 2024-07-12 | 华能新华发电有限责任公司 | Simulated vibration training device |
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