CN114646377A - Vibration force measuring device - Google Patents

Vibration force measuring device Download PDF

Info

Publication number
CN114646377A
CN114646377A CN202011516226.9A CN202011516226A CN114646377A CN 114646377 A CN114646377 A CN 114646377A CN 202011516226 A CN202011516226 A CN 202011516226A CN 114646377 A CN114646377 A CN 114646377A
Authority
CN
China
Prior art keywords
vibration
platform
measuring
lifting device
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011516226.9A
Other languages
Chinese (zh)
Inventor
简国谕
林庚达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metal Industries Research and Development Centre
Original Assignee
Metal Industries Research and Development Centre
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metal Industries Research and Development Centre filed Critical Metal Industries Research and Development Centre
Priority to CN202011516226.9A priority Critical patent/CN114646377A/en
Publication of CN114646377A publication Critical patent/CN114646377A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00Measuring characteristics of vibrations in solids by using direct conduction to the detector

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention discloses a vibration force measuring device which comprises a measuring platform, a lifting device, a sensor, a vibration transmission piece and an elastic supporting piece. The measuring platform is provided with a bearing surface for bearing an object to be measured. The lifting device is configured to lift the measurement platform off an upper surface of the lifting device. The sensor is configured to sense an amount of vibration generated when the object is in operation. The vibration transmission member has opposite first and second ends. The first end is engaged with the sensor and the second end is configured to receive a vibration quantity. The elastic supporting part is connected with the measuring platform and the supporting structure, wherein the vibration transmission part and the elastic supporting part are respectively positioned at two opposite sides of the measuring platform. The sensor, the vibration transmission piece and the elastic support piece are respectively arranged on two opposite sides of the object to be detected, so that the vibration force of the object to be detected during operation can be sensed in real time, and the vibration force data can be quantitatively graded, so that the device has quick full detection capability.

Description

Vibration force measuring device
Technical Field
The present invention relates to a force measuring device, and more particularly, to a vibration force measuring device.
Background
Rotary machines are widely used in electromechanical systems in various fields. In order to solve the problem of unbalanced vibration generated during operation of a rotary machine, a balance corrector is often used in the prior art in the industry to measure the unbalanced mass and the existing position, and the unbalanced vibration of the rotor is solved by subtracting or adding and correcting the mass.
The dynamic balance correcting machine can be divided into a soft dynamic balancing machine and a hard dynamic balancing machine in principle. The soft dynamic balancing machine is relatively rare in the market due to the complex operation. The hard balancing machine adopts a piezoelectric force sensor to directly process the vibration force. In the processing of double-sided and single-sided dynamic balance, a method of faster balance processing is provided for the hard balance function than complex plane separation algorithm operation of soft balance.
The balancer mainly measures the unbalance amount of the rotor by the centrifugal force generated when the rotor rotates. The hard bearing balancing machine can directly measure the centrifugal force and then calculate the unbalance amount of the rotor by using the centrifugal force. While the soft bearing balancing machine measures the vibration quantity of the rotor during rotation, so that the vibration quantity needs to be added with a test weight to be converted into the unbalance quantity of the rotor.
The hard support balancing machine is suitable for rotors with large mass and large initial unbalance amount. While the soft support balancing machine is more suitable for lighter rotors and rotors with very high working rotating speed. Because the lighter rotor and the rotor with high rotating speed are widely applied to various small household appliances, the demand on the market is large.
For various small-sized heat dissipation fans applied to the fields of electronics, automobiles, medical treatment, household appliances and the like, the hard support balancing machine has overlarge precision error of micro vibration force, and easily has a state that the natural frequency is too close to or lower than that of a high-rotating-speed rotor, so that the measurement cannot be carried out. A soft support balancing machine developed for a fan adopts an acceleration gauge to measure vibration quantity, cannot meet the requirement that a production line needs to detect centrifugal force intuitively, and has errors when the detected vibration quantity is converted into the centrifugal force. In addition, the conventional soft support balancing machine has poor measurement sensitivity and resolution on micro vibration force, and cannot accurately and directly present the vibration force data of the small fan required by a production line, so that the conventional soft support balancing machine cannot be further applied to product classification.
The conventional fan vibration measurement system has the biggest problems that the erection, installation and measurement time is too long and the detection amount per unit time cannot exceed the manual work for product pipes on a production line of a manufacturer.
Disclosure of Invention
Therefore, an object of the present invention is to provide a vibration force measuring device, in which a sensor, a vibration transmission member and an elastic support member are respectively disposed on two opposite sides of an object to be measured, so as to sense the vibration force of the object during operation in real time, and quantitatively classify the vibration force data, so that the device has a fast full-inspection capability, and can solve the problem that a commercial rotor vibration detection system cannot be fully inspected in a product line with high-speed rotating elements, such as a fan.
Another object of the present invention is to provide a vibration force measuring device, which is easy to install and install, so as to solve the problem of the commercial rotor vibration detecting system that the measuring time is too long in the product line with high-speed rotating components, such as fans.
It is another object of the present invention to provide a vibration force measuring apparatus, which can use a load cell sensor as a sensor for measuring vibration force, so as to directly measure the force variation data of the object under test during operation, and has the advantages of low cost, easy acquisition, and complete specification, especially for the micro-vibration force measuring range below 10N.
Another objective of the present invention is to provide a vibration-force measuring apparatus, wherein the measuring platform can be supported by a lifting device without friction or with low friction, so as to block the interference of friction, and further effectively improve the sensitivity of measuring the vibration force of the object to be measured.
In accordance with the above object of the present invention, a vibration power measuring apparatus for measuring an object to be measured having a high-speed rotating element is provided. The vibration force measuring device comprises a measuring platform, a lifting device, a sensor, a vibration transmission piece and an elastic supporting piece. The measuring platform is provided with a bearing surface for bearing an object to be measured. The lifting device is configured to lift the measurement platform off an upper surface of the lifting device. The sensor is configured to sense an amount of vibration generated when the object is in operation. The vibration transmission member has opposite first and second ends, wherein the first end is engaged with the sensor and the second end is configured to receive the vibration amount. The elastic supporting part is connected with the measuring platform and the supporting structure, wherein the vibration transmission part and the elastic supporting part are respectively positioned at two opposite sides of the measuring platform.
According to an embodiment of the present invention, the measuring platform includes a clamp configured to fix the object to be measured on the measuring platform, and the clamp includes a first clamping portion and a second clamping portion opposite to each other.
According to an embodiment of the present invention, the lifting device is an air bearing, and the air bearing can float the measuring platform by using air.
According to an embodiment of the present invention, the lifting device includes at least three balls protruding from an upper surface of the lifting device, and the balls are configured to lift the measurement platform off the upper surface of the lifting device.
According to an embodiment of the invention, the lifting device further includes at least one magnetic element configured to apply a magnetic attraction force to the measuring platform.
According to an embodiment of the invention, the second end of the vibration transmission member is further configured to abut against the object to be measured or the measurement platform.
According to an embodiment of the present invention, the sensor is coupled to the supporting structure, and a natural frequency of a system composed of the supporting structure, the sensor, and the elastic supporting member is lower than a rotation frequency of the object.
According to an embodiment of the present invention, the natural frequency of the elastic supporting element is less than half of the rotation frequency of the object.
According to an embodiment of the present invention, the vibration transmission member includes a thimble.
According to an embodiment of the present invention, the elastic supporting member includes a spring.
Compared with the prior art, the vibration power measuring device has the following beneficial effects:
the sensor, the vibration transmission piece and the elastic support piece are respectively arranged on two opposite sides of the object to be detected, so that the vibration force of the object to be detected during operation can be sensed in real time, and the vibration force data can be quantized and graded. Therefore, the vibration force measuring device has the capability of quick full detection, and can solve the problem that the commercial rotor vibration detection system cannot perform full detection in a product production line with high-speed rotating elements such as fans and the like.
The system is easy to erect and install, so that the problem that the measuring time of a commercial rotor vibration detection system in a product production line with high-speed rotating elements such as a fan is too long can be solved.
The measuring platform can adopt a load cell sensor as a sensor of the vibration quantity, so that the force change data of the object to be measured during operation can be directly measured, and the measuring platform has the advantages of low cost, easy acquisition and complete specification.
The measuring platform can be supported by a lifting device without friction force or low friction force, so that the interference of the friction force can be blocked, and the measuring sensitivity of the vibration force of the object to be measured can be effectively improved.
Drawings
In order to make the aforementioned and other objects, features, advantages and embodiments of the invention more comprehensible, the following description is given:
fig. 1 is a schematic side view of a vibration force measuring apparatus according to an embodiment of the present invention; and
fig. 2 is a schematic side view of a vibration force measuring device according to another embodiment of the invention.
Description of the main reference numerals:
100 a-vibration force measuring device, 100 b-vibration force measuring device, 110-measuring platform, 112-bearing surface, 114-clamp jig, 114 a-first clamping part, 114 b-second clamping part, 116-first side, 118-second side, 120-lifting device, 122-upper surface, 124-base, 126-air floating part, 130-sensor, 140-vibration transmission part, 142-first end, 144-second end, 150-elastic support part, 152-first end, 154-second end, 160-object to be measured, 170-supporting structure, 180-lifting device, 182-base, 184-ball, 186-magnetic attraction element, 188-upper surface, X-coordinate axis, Y-coordinate axis, Z-coordinate axis.
Detailed Description
The hard support dynamic balance technique is suitable for measuring rotors with vibration less than the natural frequency of the system, and is therefore more suitable for measuring centrifugal force directly on larger rotor workpieces. The soft support dynamic balance technology is suitable for measuring the rotor with vibration greater than the natural frequency of the system, so that the soft support dynamic balance technology is more suitable for measuring the vibration displacement of a micro and high-speed rotor workpiece. The present invention provides a vibration power measuring device, which is suitable for the vibration frequency of the object to be measured higher than the natural frequency of the supporting system of the measuring device.
Fig. 1 is a schematic side view illustrating a vibration power measuring apparatus according to an embodiment of the invention. The vibration force measuring apparatus 100a can be used to measure the force, such as vibration force, generated by the operation of the object 160 of the high-speed rotating element of the measuring device. In some examples, the dut 160 may be a motor or a fan, such as a thin heat dissipation fan or a thin motor. The radius of rotation of the test object 160 may be, for example, more than 3 times greater than the axial thickness of the test object 160. Generally, the centrifugal force of a thin fan is greater than that of a non-thin fan. Therefore, the shaking force generated during the operation of the thin fan is mainly the radial centrifugal force generated during the rotation of the offset of the center of mass of the fan. The vibration force measuring apparatus 100a may mainly include a measuring platform 110, a lifting device 120, a sensor 130, a vibration transmitter 140, and an elastic support 150.
The metrology platform 110 has a bearing surface 112. The object 160 is disposed on the supporting surface 112 and supported by the measuring platform 110. The bearing surface 112 may, for example, extend horizontally. In some exemplary embodiments, the horizontal plane is an XY plane defined by coordinate axis X and coordinate axis Y, and the support surface 112 is substantially parallel to the XY plane when measurements are taken. The coordinate axis Z is perpendicular to the XY-plane, and the coordinate axis X, the coordinate axis Y, and the coordinate axis Z are perpendicular to each other. The measuring platform 110 may be made of a light-weight plate material to reduce the influence on the vibration signal generated when the object 160 is operated.
In some examples, the metrology platform 110 may include a clamp fixture 114. The clamping fixture 114 may be protruded on the carrying surface 112 of the measuring platform 110. The clamping fixture 114 can clamp and fix the object 160 on the carrying surface 112 of the measurement platform 110. The measurement platform 110 may have a first side 116 and a second side 118 opposite each other. In some exemplary examples, the clamping fixture 114 includes a first clamping portion 114a and a second clamping portion 114 b. The first clamping portion 114a and the second clamping portion 114b are respectively disposed on the first side 116 and the second side 118 of the measurement platform 110, and the first clamping portion 114a and the second clamping portion 114b are opposite to each other. The first clamping portion 114a and the second clamping portion 114b can be, for example, L-shaped structures to support and clamp the object 160. The clamping fixture 114 is not limited to the above example, and the structure of the clamping fixture 114 can be adjusted according to the shape of the object 160 and the measurement requirement. The measurement platform 110 may also use other fixing elements, such as a clamping element, a locking element, a magnetic element, or a vacuum element, to clamp and fix the object 160 to be measured on the bearing surface 112 of the measurement platform 110.
The metrology platform 110 is positioned above the upper surface 122 of the lift device 120. The lifting device 120 may lift the measurement platform 110 off the upper surface 122 of the lifting device 120, thereby greatly reducing the friction between the measurement platform 110 and the lifting device 120. Since the upper surface 122 of the lifting device 120 is an XY plane, by reducing the friction between the measuring platform 110 and the lifting device 120, the interference of the friction on the vibration force signal of the object 160 in the XY plane can be avoided.
In this embodiment, the lifting device 120 is an air bearing. In some examples, the lift device 120 may include a base 124 and at least one air bearing 124, such as two air bearings 124, as shown in fig. 1. The air floating portion 126 may be protruded from the base 124. For example, the air floating portion 126 may be embedded in the pedestal 124, and a top surface of the air floating portion 126 is higher than a top surface of the pedestal 124. In other examples, the top surface of the air bearing 126 may be flush with the top surface of the pedestal 124 or may be lower than the top surface of the pedestal 124. The air bearing portion 126 of the lifting device 120 may float the metrology stage 110 with air to separate the metrology stage 110 from the upper surface 122 of the lifting device 120.
The sensor 130 is mainly used for sensing the vibration generated by the object 160. As shown in fig. 1, the sensor 130 may be indirectly engaged with the measurement platform 110. For example, the sensor 130 may be fixedly coupled to the support structure 170. The support structure 170 may be an external structure, or may be the base 124 of the lifting device 120 or an extension of the base 124. The sensor 130 may be, for example, a load cell sensor, a piezoelectric force sensor, or a capacitive force sensor. The sensor 130 may also be a displacement sensor, an acceleration sensor, and the like, such as a linear differential transformer (LVDT), a capacitive shifter, an optical gauge, a magnetic gauge, and an accelerometer. Sensors capable of measuring physical quantities such as force, displacement, or acceleration generated by vibration are all embodiments of the sensor of the present invention. In some illustrative examples, sensor 130 may be a load cell sensor. The load cell sensor can directly measure force variation data, especially for a micro-vibration force measuring range below 10N, and has the advantages of low cost, easy acquisition and complete specification.
The vibration transmission member 140 has a first end 142 and a second end 144 opposite to each other. In some examples, the vibration transmission member 140 may be a rod-shaped structure. For example, the vibration transmitter 140 may include a thimble. The first end 142 of the vibration transmission member 140 is engaged with the sensor 130. The second end 144 of the vibration transmitter 140 is configured to receive the vibration generated by the object 160 during operation. For example, the second end 144 of the vibration transmitter 140 may abut against a side of the object 160 to be measured or the first side 116 of the measurement platform 110. In some illustrative examples, the second end 144 of the vibration transmission member 140 abuts the first clamping portion 144 at the first side 116 of the measurement platform 110. Thereby, the vibration amount variation of the measuring platform 110 caused by the operation of the object 160 can be transmitted to the sensor 130 through the vibration transmission member 140. For example, the vibration transmitter 140 may transmit the vibration generated by the object 160 moving on the measuring platform 110 to the sensor 130.
The elastic support 150 and the vibration transmission member 140 are respectively located at opposite sides of the measuring platform 110. The flexible supporting member 150 may directly connect the object 160 and the supporting structure 170, or connect one side of the measuring platform 110 and the supporting structure 170. In some illustrative examples, as shown in fig. 1, the elastic support 150 may have a first end 152 and a second end 154 opposite to each other. The first end 152 of the elastic supporting member 150 is engaged with the second clamping portion 114b of the clamping fixture 114, and the second end 154 is engaged with the supporting structure 170. The resilient support 150 may, for example, comprise a spring. The compressive and tensile forces applied to the elastic support 150 may cause the elastic support 150 to perform elastic motions of compression and tension between the second side 118 of the measurement platform 110 and the support structure 170, respectively.
In some examples, since the sensor 130 and the elastic support 150 are both coupled to the support structure 170, the natural frequency of the system consisting of the support structure 170, the sensor 130, and the elastic support 150 is designed to be lower than the rotation frequency of the dut 160. The elastic supporting member 150 may be an elastic element with different natural frequencies according to the measured rotation frequency of the dut 160. In some exemplary examples, the natural frequency of the elastic support 150 is less than half of the rotation frequency of the object 160.
Since the rotor of the plurality of heat-dissipating objects 160 has a shape in which the rotation diameter is 3 to 10 times larger than the axial dimension, the unbalance of the rotor of the objects 160 during operation can be regarded as single-plane vibration, and the main part is radial vibration. Therefore, the present embodiment is simplified to measure only the radial vibration force of the object 160 in the XY plane.
Since the vibration transmitter 140 and the elastic support 150 are respectively located at two opposite sides of the object 160, for example, respectively engaged at the first side 116 and the second side of the measuring platform 110, the elastic support 150 can be compressed and extended between the second side 118 of the measuring platform 110 and the supporting structure 170. Therefore, the radial vibration generated when the object 160 is in operation can make the measuring platform 110 move back and forth between the vibration transmission member 140 and the elastic supporting member 150, so that the first clamping portion 114a intermittently impacts the vibration transmission member 140. The vibration transmitter 140 can transmit the impact amount to the sensor 130, so that the sensor 130 can sense the vibration force generated by the operation of the object 160.
In the illustrated example, the vibration force measurement apparatus 100a employs a load cell sensor as the sensor 130. Since the load cell sensor can directly measure the force variation data of the object 160 during operation, the vibration force measuring apparatus 100a has the capability of real-time force sensing, data quantization and classification, and fast overall detection. For example, upper and lower boundary values of the vibration force of the dut 160 may be set, so that the quality of the dut 160 may be rapidly detected according to the measurement data. In addition, the vibration sensing force can be classified, whereby the product quality of the object 160 can be rapidly classified according to the measurement data.
In addition, the load cell sensor is inexpensive, and the equipment cost of the vibration power measuring apparatus 100a can be reduced. Moreover, since the measuring platform 110 is supported by the frictionless air-floating type lifting device 110, the vibration power measuring apparatus 100a can accurately and sensitively measure the real vibration power of the object 160. The vibration power measuring apparatus 100a is particularly suitable for measuring the vibration power of a small-sized precision radiator fan with a vibration power level of 0.001N to 0.1N, such as an electronic, automotive, or medical radiator fan.
In application, the data measured by the vibration power measuring apparatus 100a may be further subjected to a characteristic identification analysis through a frequency domain, a time domain, or a model, so as to facilitate subsequent intelligent management.
The lifting device of the present invention is not limited to the above-mentioned air-floating type elements, and low friction elements may be used as the lifting device. Fig. 2 is a schematic side view of a vibration force measuring apparatus according to another embodiment of the invention. The vibration force measuring apparatus 100b of this embodiment has substantially the same elements and structure as the vibration force measuring apparatus 100a, and the difference therebetween is that the lifting device 180 of the vibration force measuring apparatus 100b is a low-friction element including a plurality of balls 184.
In some examples, the lifting device 180 may include a base 182 and a plurality of balls 184. The balls 184 are rollably disposed in the base 182, and the balls 184 protrude from an upper surface 188 of the lifting device 180. The metrology platform 110 is placed on the upper surface 188 of the lift device 180 and is held by the ball 184. The balls 184 lift the metrology platform 110 to disengage the metrology platform 110 from the upper surface 188 of the lifting device 180. The number of balls 184 may be, for example, equal to or greater than three to support the metrology platform 110 smoothly.
In the present embodiment, the ball 184 is used to lift the measuring platform 110, so as to reduce the contact area between the measuring platform 110 and the lifting device 180, and further greatly reduce the friction between the measuring platform 110 and the lifting device 180. Therefore, the interference of the friction force between the measuring platform 110 and the lifting device 180 on the vibration force signal of the object 160 in the XY plane can be avoided.
In some illustrative examples, as shown in fig. 2, the lifting device 180 further optionally includes one or more magnetically attractive elements 186. Furthermore, the measurement platform 110 may comprise a ferromagnetic material. The magnetically attractive element 186 may apply a magnetic force to the measuring platform 110, thereby applying a pre-stress force to the measuring platform 110 towards the upper surface 188 of the lifting device 180. The pre-pressure is applied to prevent the object 160 from generating excessive shaking force during operation to cause the measurement platform 110 to jump away, so that the lifting device 180 can stably support the measurement platform 110 during the measurement process.
In view of the above, the present invention provides an advantage in that the vibration force measuring device includes a sensor, a vibration transmission member, and an elastic support member respectively disposed on two opposite sides of the object to be measured, so as to sense the vibration force of the object to be measured in real time and quantitatively classify the vibration force data. Therefore, the vibration force measuring device has the capability of quick full detection, and can solve the problem that the commercial rotor vibration detection system cannot perform full detection in a product production line with high-speed rotating elements such as fans and the like.
It is noted that, in the embodiments described above, the vibration force measuring device of the present invention is easy to mount and install, so that the problem of too long measuring time of the commercial rotor vibration detecting system in a product line with high-speed rotating components, such as a fan, can be solved.
In view of the above, another advantage of the present invention is that the measuring platform of the vibration force measuring apparatus of the present invention can use the load cell sensor as a sensor for measuring the vibration amount, so that the force variation data of the object to be measured during operation can be directly measured, and the measuring platform has the advantages of low cost, easy acquisition, and complete specification.
In view of the above, another advantage of the present invention is that the measuring platform of the vibration-force measuring apparatus of the present invention can be supported by the lifting device without friction or with low friction, so that the interference of friction can be prevented, and the measurement sensitivity of the vibration force of the object to be measured can be effectively improved.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A vibration power measuring apparatus for measuring an object to be measured having a high-speed rotating element, comprising:
the measuring platform is provided with a bearing surface for bearing the object to be measured;
a lifting device configured to lift the measurement platform off an upper surface of the lifting device;
a sensor configured to sense an amount of vibration generated when the object to be measured is operated;
a vibration transmitter having opposing first and second ends, wherein the first end is engaged with the sensor and the second end is configured to receive the amount of vibration; and
and the elastic supporting part is connected with the measuring platform and the supporting structure, wherein the vibration transmission part and the elastic supporting part are respectively positioned at two opposite sides of the measuring platform.
2. The vibratory force measuring device of claim 1, wherein the measuring platform comprises a clamping fixture configured to fix the object to be measured on the measuring platform, the clamping fixture comprising a first clamping portion and a second clamping portion opposite to each other.
3. The vibratory force measuring device of claim 1, wherein the lifting device is an air bearing that allows the measuring platform to be floated off by a gas.
4. The vibratory force measuring device of claim 1, wherein the lifting device comprises at least three balls protruding from the upper surface of the lifting device, the balls configured to lift the measuring platform off the upper surface of the lifting device.
5. The vibratory force measurement device of claim 4, wherein the lifting device further comprises at least one magnetically attractive element configured to exert a magnetic attractive force on the measurement platform.
6. The vibratory force measuring device of claim 1, wherein the second end of the vibration transmitting member is further configured to abut against the test object or the measurement platform.
7. The vibratory force measuring device of claim 1, wherein the sensor is coupled to the support structure, and wherein a natural frequency of a system of the support structure, the sensor, and the resilient support is lower than a rotational frequency of the test object.
8. The vibratory force measuring device of claim 7, wherein a natural frequency of the resilient support is less than half of the rotational frequency of the test object.
9. The vibratory force measuring device of claim 1, wherein the vibration transmitting member comprises a thimble.
10. The vibratory force measuring device of claim 1, wherein the resilient support comprises a spring.
CN202011516226.9A 2020-12-21 2020-12-21 Vibration force measuring device Pending CN114646377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011516226.9A CN114646377A (en) 2020-12-21 2020-12-21 Vibration force measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011516226.9A CN114646377A (en) 2020-12-21 2020-12-21 Vibration force measuring device

Publications (1)

Publication Number Publication Date
CN114646377A true CN114646377A (en) 2022-06-21

Family

ID=81990194

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011516226.9A Pending CN114646377A (en) 2020-12-21 2020-12-21 Vibration force measuring device

Country Status (1)

Country Link
CN (1) CN114646377A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619214A1 (en) * 1987-08-05 1989-02-10 Muller & Cie Ets M Apparatus for detecting the unbalance of a motor vehicle wheel with a view to balancing it
JPH09138179A (en) * 1995-11-14 1997-05-27 Akashi:Kk Balance test machine with measurement preservation mechanism
CN1298484A (en) * 1998-09-02 2001-06-06 斯奈帮技术公司 Device for measuring the forces generated by a rotor imbalance
RU2007101146A (en) * 2007-01-10 2008-07-20 Открытое акционерное общество "Научно-исследовательский технологический институт "НИТИ-ТЕСАР" (ОАО "НИТИ-ТЕСАР") (RU) DEVICE FOR DYNAMIC BALANCING OF ROTORS
RU2339926C1 (en) * 2007-05-03 2008-11-27 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Dynamic rotor balancing machine
RU2426082C1 (en) * 2010-03-15 2011-08-10 Александр Николаевич Николаев Procedure and device for rotor balancing
JP2016099237A (en) * 2014-11-21 2016-05-30 Nok株式会社 Rotation imbalance measuring device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619214A1 (en) * 1987-08-05 1989-02-10 Muller & Cie Ets M Apparatus for detecting the unbalance of a motor vehicle wheel with a view to balancing it
JPH09138179A (en) * 1995-11-14 1997-05-27 Akashi:Kk Balance test machine with measurement preservation mechanism
CN1298484A (en) * 1998-09-02 2001-06-06 斯奈帮技术公司 Device for measuring the forces generated by a rotor imbalance
RU2007101146A (en) * 2007-01-10 2008-07-20 Открытое акционерное общество "Научно-исследовательский технологический институт "НИТИ-ТЕСАР" (ОАО "НИТИ-ТЕСАР") (RU) DEVICE FOR DYNAMIC BALANCING OF ROTORS
RU2339926C1 (en) * 2007-05-03 2008-11-27 Федеральное государственное унитарное предприятие "НПО "ТЕХНОМАШ" Dynamic rotor balancing machine
RU2426082C1 (en) * 2010-03-15 2011-08-10 Александр Николаевич Николаев Procedure and device for rotor balancing
JP2016099237A (en) * 2014-11-21 2016-05-30 Nok株式会社 Rotation imbalance measuring device

Similar Documents

Publication Publication Date Title
CN104122036B (en) Routine test centrifuge stationary-mobile state balance monitoring device
CN108663210B (en) Method and device for measuring friction torque and friction coefficient of bearing
CN108031870A (en) A kind of main shaft of numerical control machine tool loading performance test device and test evaluation method
CN101813499B (en) Method and device for calibrating three-dimensional micro tactile sensor
KR20160125645A (en) Apparatus for measuring friction of vibrating structures
CN111043944A (en) In-situ calibration device for eddy current displacement sensor
CN211085095U (en) Eddy current displacement sensor normal position calibration device
CN111215648B (en) Electric spindle reliability rapid experiment loading method and loading system
CN112014044A (en) Static stiffness tester and static stiffness testing method
CN105157920B (en) A kind of superminiature rotor dynamic balancing tests rocker
CN106595952A (en) Dynamic force sensor sensitivity calibration method and device
CN109612864A (en) A kind of sliding friction fatigue experimental device for rotary bending fatigue machine
CN114646377A (en) Vibration force measuring device
CN105388011A (en) Test apparatus for axial static rigidity of main shaft and using method thereof
TWI757995B (en) Vibration force measuring device
CN208432333U (en) A kind of table top assembly
TWI768573B (en) Vibration force measuring device
CN114646378A (en) Vibration force measuring device
CN207147706U (en) A kind of evaluating apparatus of quartz flexible accelerometer dynamic balance accuracy
CN107144381B (en) Method for measuring cogging torque of permanent magnet motor
CN103245607A (en) Device for measuring frictional force accurately
CN210664550U (en) Dynamic debugging device for magnetic bearing sensor
CN209311256U (en) Device for the assessment of bearing retainer wearability
CN207894771U (en) A kind of device measuring gas density in air film gap based on electromagnetic method
CN208902084U (en) A kind of detection device of super large type bearing ring outer diameter

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination