CN221325894U - Bearing friction force measuring device - Google Patents
Bearing friction force measuring device Download PDFInfo
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- CN221325894U CN221325894U CN202323189869.9U CN202323189869U CN221325894U CN 221325894 U CN221325894 U CN 221325894U CN 202323189869 U CN202323189869 U CN 202323189869U CN 221325894 U CN221325894 U CN 221325894U
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- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
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- 230000003139 buffering effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
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Abstract
The utility model provides a bearing friction force measuring device, which belongs to the technical field of measuring devices and comprises a pneumatic bearing driving piece, a force transducer, a second fixing seat and a limiting upright post connected to the second fixing seat, wherein a bearing body is connected to the limiting upright post; the aerodynamic force output end of the aerodynamic bearing driving piece is arranged opposite to the outer end face of the bearing body. According to the utility model, the pneumatic force generated by the pneumatic bearing driving piece acts on the bearing body to drive the bearing body to rotate, and the pneumatic force generated by the pneumatic bearing driving piece does not act on the limiting stand column, namely the vibration of the limiting stand column is not caused, so that the rotation stability of the bearing body is ensured.
Description
Technical Field
The utility model belongs to the technical field of measuring devices, relates to a moment measuring technology, and particularly relates to a bearing friction force measuring device.
Background
The bearing is an important part in modern mechanical equipment, belongs to one of precise transmission parts, and has the function of bearing radial load, achieving the purpose of fixing a shaft and realizing the rotation of the shaft, thereby controlling the axial and radial movement of the shaft. The main types of bearings are classified into sliding bearings, knuckle bearings, rolling bearings, and the like. The rolling bearing generally consists of four parts, namely an inner ring, an outer ring, rolling bodies and a retainer, wherein the inner ring is matched with the shaft and rotates together with the shaft; the outer ring is matched with the bearing seat to play a supporting role, rolling bodies are uniformly distributed between the inner ring and the outer ring by means of the retainer, the size and the number of the shapes of the rolling bodies directly influence the service performance and the service life of the rolling bearing, and the retainer can uniformly distribute the rolling bodies and guide the rolling bodies to rotate to play a lubricating role.
In the prior art, the service life of a bearing is generally evaluated by the friction moment of the bearing and the friction coefficient of the bearing. For the measurement of the friction moment of the bearing, the prior art has a lot, namely the moment measurement is directly carried out, and the friction force is measured first, and the moment and the friction coefficient are calculated through the friction force. For example, patent application number 2009200492570 discloses a rolling bearing friction torque/rotation speed measuring instrument, which comprises a driving main shaft, a precise instrument support bearing, a lever type axial load loading device, a force transmission turntable, a force measuring sensor, a signal acquisition and analysis instrument and a direct current stepless speed change motor. During measurement, the measured bearing is arranged in the bearing replacement sleeve, the measured bearing loads axial load through the axial load loading lever, the motor drives the main shaft to rotate, and the main shaft drives the outer ring of the measured bearing to rotate along with the axial load through the bearing replacement sleeve; under the action of the friction moment between the inner ring and the outer ring of the tested bearing, the force transmission turntable presses the force transducer to convert the friction moment between the outer ring and the inner ring of the tested bearing into a force signal, and the force signal is calculated into the friction moment through a signal acquisition and analysis instrument. In the patent document, the rotation power of the bearing comes from the output shaft of the motor, and the rotation power of the motor is relatively large, so that the output shaft of the motor is unstable in the rotation process and is easy to oscillate, and the positioning of the bearing is unstable.
Disclosure of utility model
To the above description, in the prior art, when the friction moment or the friction force of the bearing is measured, the rotation power of the motor is relatively large, so that the output shaft of the motor is unstable in the rotation process and is easy to oscillate, and the technical problem of unstable positioning of the bearing is caused. Based on the technical problem, the utility model provides a bearing friction force measuring device.
According to the utility model, the pneumatic bearing driving piece is arranged on the outer end surface of the bearing body, the bearing body is connected to the limiting upright post, the bearing body is driven to rotate by the pneumatic bearing driving piece, the friction force of the inner ring of the bearing body in the rotating process is measured by the force transducer, the subsequent calculation of the moment of the bearing and the friction coefficient of the bearing by the measured friction force is facilitated, and the measurement of the moment of the bearing body is realized. The pneumatic force generated by the pneumatic bearing driving piece acts on the bearing body, the rotating speed of the bearing body is conveniently adjusted through the ventilation quantity in the pneumatic bearing driving piece, and the pneumatic force generated by the pneumatic bearing driving piece can not directly act on the limiting upright post, namely, the limiting upright post can not oscillate, so that the rotating stability of the bearing body is ensured.
The utility model adopts the following technical scheme:
The bearing friction force measuring device comprises a pneumatic bearing driving piece, a force transducer, a second fixing seat and a limiting upright post connected to the second fixing seat, wherein a bearing body is connected to the limiting upright post; the aerodynamic output end of the aerodynamic bearing driving piece is arranged opposite to the outer end face of the bearing body.
Further defined, the bearing friction force measuring device further comprises a connecting piece, and the force transducer is connected with the limiting upright post through the connecting piece.
Further limited, the connecting piece is an elastic connecting piece, a limiting hole is formed in the limiting upright post in the radial direction, one end of the elastic connecting piece is arranged in the limiting hole and fixedly connected with the limiting upright post, and the other end of the elastic connecting piece extends out of the limiting hole and is connected with the force transducer.
Further limited, the connecting piece is a bidirectional synchronous telescopic electric push rod, the bidirectional synchronous telescopic electric push rod penetrates through the limiting upright column along the radial direction, and the two end parts of the bidirectional synchronous telescopic electric push rod are provided with force transducers.
Further defined, the pneumatic bearing driving piece comprises a pneumatic driver, an air pipe, an air source and a valve body, wherein the pneumatic driver is communicated with the air source through the air pipe, the valve body is arranged on the air pipe, and a pneumatic output end of the pneumatic driver is arranged opposite to the outer end face of the bearing body.
Further limited, the bearing friction force measuring device further comprises a first fixing seat and a supporting rod, wherein the first fixing seat and the second fixing seat are arranged in parallel, and the first fixing seat is connected with the pneumatic driver through the supporting rod.
Further limited, bearing friction force measuring device still includes connecting plate, swivel nut and first transition frame, the top of bracing piece is provided with the external screw thread, swivel nut and the top threaded connection of bracing piece, swivel nut is connected with the connecting plate through first transition frame, the connecting plate is connected with pneumatic drive.
Further limited, bearing friction force measuring device still includes third fixing base, second switching frame, connecting rod and laser speed sensor, the third fixing base sets up side by side with the second fixing base, third fixing base and second switching frame fixed connection, the connecting rod runs through the second switching frame and is connected with laser speed sensor, laser speed sensor's detecting head sets up the top at bearing body outer lane.
Further limited, the bearing friction force measuring device further comprises a fixing frame, and the first fixing seat, the second fixing seat and the third fixing seat are fixedly connected to the top of the fixing frame.
Further defined, the bottom of mount is provided with the stabilizer blade, the stabilizer blade is the universal wheel.
Compared with the prior art, the utility model has the beneficial effects that:
1. The utility model discloses a bearing friction force measuring device which comprises a pneumatic bearing driving piece, a second fixing seat and a limiting upright post connected to the second fixing seat, wherein the second fixing seat is used for fixing the limiting upright post; according to the utility model, the pneumatic bearing driving piece is arranged on the outer end surface of the bearing body, the friction force of the inner ring of the bearing body in the rotating process is measured through the force measuring sensor, the subsequent calculation of the moment of the bearing and the friction coefficient of the bearing through the measured friction force is facilitated, and the measurement of the moment of the bearing body is realized. The pneumatic force generated by the pneumatic bearing driving piece acts on the bearing body, the rotating speed of the bearing body is conveniently adjusted through the ventilation quantity in the pneumatic bearing driving piece, and the pneumatic force generated by the pneumatic bearing driving piece does not act on the limiting upright post, namely, the limiting upright post cannot oscillate, so that the rotating stability of the bearing body is ensured.
2. The connecting piece is an elastic connecting piece, and the elastic connecting piece has certain buffering performance, so that a certain buffering distance is reserved between the force transducer and the end face of the inner ring of the bearing body, and the force transducer is prevented from being damaged due to hard contact between the force transducer and the end face of the inner ring of the bearing body.
3. The connecting piece is a bidirectional synchronous telescopic electric push rod, and the bidirectional synchronous telescopic electric push rod can push the force transducer to move along the end face of the inner ring of the bearing body, so that the measuring position of the force transducer can be conveniently adjusted.
4. The pneumatic bearing driving piece comprises a pneumatic driver, an air pipe, an air source and a valve body, wherein the air source is used for ventilating the pneumatic driver through the air pipe, and the driving force of the bearing body is regulated by regulating the air supply pressure of the air source, so that the rotating speed of the bearing body is conveniently regulated; the valve body is connected to the air pipe, so that the flow of the air pipe can be conveniently regulated through the valve body.
5. The bearing friction force measuring device also comprises a first fixing seat and a supporting rod, wherein the first fixing seat is used for supporting the supporting rod, and the supporting rod is used for supporting the pneumatic driver.
6. The bearing friction force measuring device also comprises a connecting plate, a rotating nut and a first rotating frame, wherein the rotating nut is in threaded connection with the top of the supporting rod, and the air outlet direction of the pneumatic driver is adjusted by rotating the rotating nut, so that the air outlet direction of the pneumatic driver is along the tangential direction of the outer ring of the bearing body; the first switching frame is used for connecting the rotating nut and the connecting plate, and the connecting plate is used for fixedly connecting the pneumatic driver.
7. The bearing friction force measuring device also comprises a third fixing seat, a second switching frame, a connecting rod and a laser speed measuring sensor, wherein the third fixing seat is used for fixedly supporting the second switching frame, and the connecting rod is used for connecting the laser speed measuring sensor; the detection head of the laser speed measuring sensor is arranged above the bearing body and is used for detecting the rotating speed of the bearing body.
8. The bearing friction force measuring device also comprises a fixing frame, wherein the fixing frame is used for fixedly connecting the first fixing seat, the second fixing seat and the third fixing seat.
9. The bottom of the fixing frame is provided with the supporting feet, the supporting feet are universal wheels, and the fixing frame can be conveniently moved through the supporting feet.
Drawings
FIG. 1 is a schematic view of a bearing friction force measuring device according to the present utility model;
FIG. 2 is a top view of the bearing friction measuring device of the present utility model;
FIG. 3 is an enlarged view of part of the portion A of FIG. 1;
FIG. 4 is an enlarged view of a portion B of FIG. 1;
The device comprises a 1-fixing frame, 2-supporting legs, a 3-first fixing seat, a 4-supporting rod, a 5-pneumatic driver, a 6-valve body, a 7-connecting plate, an 8-rotating nut, a 9-first adapter, a 10-limiting upright post, an 11-second fixing seat, a 12-bearing body, a 13-force transducer, a 14-third fixing seat, a 15-second adapter, a 16-connecting rod, a 17-laser speed measuring sensor and 18-connecting pieces.
Detailed Description
The technical scheme of the present utility model will be further explained with reference to the drawings and examples, but the present utility model is not limited to the embodiments described below.
Example 1
Referring to fig. 1 and 2, the bearing friction force measuring device of the present embodiment includes a pneumatic bearing driving member, a force sensor 13, a second fixing seat 11, and a limiting upright post 10 connected to the second fixing seat 11, wherein a bearing body 12 is connected to the limiting upright post 10, one end of the force sensor 13 is connected to the limiting upright post 10, and the other end of the force sensor 13 extends to an inner ring end face of the bearing body 12; the aerodynamic output end of the aerodynamic bearing drive is disposed opposite the outer end face of the bearing body 12.
The axial direction of the limiting upright post 10 in this embodiment is perpendicular to the plane where the upper end surface of the second fixing seat 11 is located, the bottom end portion of the limiting upright post 10 is fixedly connected with the upper end surface of the second fixing seat 11, the top end portion of the limiting upright post 10 extends upwards, and the bearing body 12 and the limiting upright post 10 are coaxially arranged. One end of the force transducer 13 is connected with the limit upright post 10, the other end (measuring end) of the force transducer 13 extends to the end face of the inner ring of the bearing body 12 to be in contact connection, and the friction force of the inner ring of the bearing body 12 in the rotating process is measured through the measuring end of the force transducer 13. Specifically, the measuring end of the load cell 13 extends to the top end face or the bottom end face of the inner ring of the bearing body 12.
When the bearing is used, the bearing body 12 is driven to rotate by the pneumatic bearing driving piece, the friction force generated by the bearing body 12 during rotation is measured by the force transducer 13, the subsequent calculation of the moment and friction coefficient of the bearing body according to the friction force is facilitated, and the measurement of the moment on the bearing body 12 is realized. The pneumatic force generated by the pneumatic bearing driving piece acts on the bearing body 12, the rotating speed of the bearing body 12 is conveniently adjusted through the ventilation quantity in the pneumatic bearing driving piece, and the pneumatic force generated by the pneumatic bearing driving piece does not act on the limiting upright post 10, namely, the limiting upright post 10 cannot vibrate, so that the rotating stability of the bearing body 12 is ensured.
Example 2
In the bearing friction force measuring device of the present embodiment, on the basis of embodiment 1, the load cell 13 of the present embodiment is connected to the limit post 10 through the connecting member 18. Specifically, one end of the load cell 13 is connected to the connecting member 18, and the other end (measuring end) of the load cell 13 is connected to the inner ring end surface (top end surface or bottom end surface) of the bearing body 12 in contact.
Example 3
In this embodiment, on the basis of embodiment 2, the connecting piece 18 of this embodiment is an elastic connecting piece, a limiting hole is radially formed in the limiting upright post 10, one end of the elastic connecting piece is disposed in the limiting hole and fixedly connected with the limiting upright post 10, and the other end of the elastic connecting piece extends out of the limiting hole and is connected with the load cell 13. The elastic connecting piece has certain buffering performance, so that a certain buffering distance is reserved between the force transducer 13 and the inner ring end face of the bearing body 12, and the force transducer 13 is prevented from being damaged due to hard contact between the force transducer 13 and the inner ring end face of the bearing body 12.
Preferably, the elastic connecting piece and the limiting hole of the embodiment are coaxially arranged.
The elastic connecting piece of the embodiment is an elastic cushion block or a spring.
Example 4
In this embodiment, on the basis of embodiment 2, the connecting piece 18 of this embodiment is a bidirectional synchronous telescopic electric push rod, the bidirectional synchronous telescopic electric push rod penetrates through the limiting upright post 10 along the radial direction of the limiting upright post 10, two end parts of the bidirectional synchronous telescopic electric push rod are connected with the force measuring sensors 13, namely, two force measuring sensors 13 are arranged, one end of the force measuring sensor 13 is connected with a power output end of the bidirectional synchronous telescopic electric push rod, and the other end (measuring end) of the force measuring sensor 13 is in contact with an end face of an inner ring of the bearing body 12. The bidirectional synchronous telescopic electric push rod can automatically adjust the telescopic length of the force transducer 13, can push the force transducer 13 to move along the end face of the inner ring of the bearing body 12, and is convenient for adjusting the measuring position of the force transducer 13.
Example 5
The bearing friction force measuring device of this embodiment is based on embodiment 2 or embodiment 3 or embodiment 4, and the pneumatic bearing driving piece includes pneumatic driver 5, trachea, air supply and valve body 6, and pneumatic driver 5 communicates with the air supply through the trachea, and valve body 6 sets up on the trachea, and pneumatic driver 5's aerodynamic output end and the outer terminal surface of bearing body 12 set up relatively. Specifically, the air outlet of the air source is communicated with the air inlet of the air pipe, the air outlet of the air pipe is communicated with the air inlet of the pneumatic driver 5, the air outlet of the pneumatic driver 5 is arranged opposite to the outer end face of the bearing body 12, and the bearing body 12 is driven to rotate by air pressure generated by the air outlet of the pneumatic driver 5.
The valve body 6 of the present embodiment is a solenoid valve, and may be a manual valve, a check valve, or the like.
It should be noted that, the air source in this embodiment comes from the air compressor.
The air source of the embodiment is used for ventilating the pneumatic driver 5 through an air pipe, and the driving force of the bearing body 12 is regulated by regulating the air supply pressure of the air source, so that the rotating speed of the bearing body 12 is conveniently regulated; the valve body 6 is connected to the air pipe, so that the flow of the air pipe can be conveniently regulated through the valve body 6.
Referring to fig. 3, the bearing friction force measuring device of the present embodiment further includes a first fixing base 3 and a supporting rod 4, the first fixing base 3 is arranged in parallel with the second fixing base 11, and the first fixing base 3 is connected with the pneumatic driver 5 through the supporting rod 4. Specifically, the bottom end portion of the supporting rod 4 is fixedly connected with the first fixing seat 3, and the top end portion of the supporting rod 4 extends upwards to be used for being connected with the pneumatic driver 5. The first fixing base 3 of the present embodiment is used for supporting the supporting rod 4, and the supporting rod 4 is used for supporting the pneumatic driver 5.
The bearing friction measuring device of this embodiment still includes connecting plate 7, swivel nut 8 and first switching frame 9, and the top of bracing piece 4 is provided with the external screw thread, and swivel nut 8 and the top threaded connection of bracing piece 4, swivel nut 8 are connected with connecting plate 7 through first switching frame 9, and connecting plate 7 is used for the card to hold pneumatic drive 5. Specifically, the bottom end of the first adapter 9 is connected to the swivel nut 8, and the top end of the first adapter 9 is connected to the connecting plate 7. Preferably, in this embodiment, the connection plates 7 are disposed on two opposite sides of the top of the first adapting frame 9, the bottoms of the two connection plates 7 are fixedly connected with the first adapting frame 9 (in a fixed connection manner such as welding, bolting or screwing), the tops of the two connection plates 7 clamp the pneumatic driver 5 in the middle and fix the pneumatic driver, preferably, threaded holes are disposed on the connection plates 7 and the pneumatic driver 5, and the screws fixedly connect the connection plates 7 and the pneumatic driver 5 through the threaded holes on the connection plates 7 and the threaded holes on the pneumatic driver 5. In the embodiment, the air outlet direction of the pneumatic driver 5 is regulated by rotating the rotary nut 8, so that the air outlet direction of the pneumatic driver 5 is along the tangential direction of the outer ring of the bearing body 12; the first adapter bracket 9 is used for connecting the swivel nut 8 and the connecting plate 7, and the connecting plate 7 is used for connecting the pneumatic driver 5.
Example 6
Referring to fig. 4, the bearing friction force measuring device of this embodiment, on the basis of embodiment 5, further includes a third fixing seat 14, a second adapting frame 15, a connecting rod 16 and a laser speed measuring sensor 17, where the third fixing seat 14 is arranged in parallel with the second fixing seat 11, the third fixing seat 14 is fixedly connected with the second adapting frame 15, the connecting rod 16 penetrates through the second adapting frame 15 and is connected with the laser speed measuring sensor 17, and a probe of the laser speed measuring sensor 17 is arranged above the bearing body 12. Specifically, the bottom end portion of the second adapting frame 15 is fixedly connected with the third fixing seat 14, the top end portion of the second adapting frame 15 extends upwards to extend with the connecting rod 16, the laser speed measuring sensor 17 is connected to one side, close to the bearing body 12, of the connecting rod 16, and the laser speed measuring sensor 17 is arranged above the bearing body 12 and used for measuring the rotating speed of the bearing body 12.
Example 7
The bearing friction measuring device of this embodiment, on the basis of embodiment 6, further includes a fixing frame 1, and the first fixing seat 3, the second fixing seat 11 and the third fixing seat 14 are all fixedly connected to the top of the fixing frame 1. Specifically, the bottom of the first fixing seat 3, the bottom of the second fixing seat 11 and the bottom of the third fixing seat 14 are fixedly connected with the top of the fixing frame 1, and the fixing frame 1 is used for fixedly connecting the first fixing seat 3, the second fixing seat 11 and the third fixing seat 14.
The bottom of mount 1 is provided with stabilizer blade 2 in this embodiment, and stabilizer blade 2 is the universal wheel, is convenient for remove mount 1 through stabilizer blade 2.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The bearing friction force measuring device is characterized by comprising a pneumatic bearing driving piece, a force transducer (13), a second fixing seat (11) and a limiting upright post (10) connected to the second fixing seat (11), wherein the limiting upright post (10) is connected with a bearing body (12), one end of the force transducer (13) is connected with the limiting upright post (10), and the other end of the force transducer (13) extends to the end face of the inner ring of the bearing body (12); the aerodynamic output end of the aerodynamic bearing driving piece is arranged opposite to the outer end surface of the bearing body (12).
2. Bearing friction measuring device according to claim 1, characterized in that it further comprises a connecting piece (18), the load cell (13) being connected to the limit stud (10) by means of the connecting piece (18).
3. Bearing friction measuring device according to claim 2, characterized in that the connecting piece (18) is an elastic connecting piece, a limiting hole is arranged on the limiting upright post (10) along the radial direction, one end of the elastic connecting piece is arranged in the limiting hole and fixedly connected with the limiting upright post (10), and the other end of the elastic connecting piece extends out of the limiting hole and is connected with the force transducer (13).
4. Bearing friction measuring device according to claim 2, characterized in that the connecting piece (18) is a bidirectional synchronous telescopic electric push rod, the bidirectional synchronous telescopic electric push rod penetrates along the radial direction of the limiting upright post (10), and both end parts of the bidirectional synchronous telescopic electric push rod are provided with force transducers (13).
5. Bearing friction measuring device according to claim 1, characterized in that the pneumatic bearing drive comprises a pneumatic drive (5), an air pipe, an air source and a valve body (6), the pneumatic drive (5) being in communication with the air source via the air pipe, the valve body (6) being arranged on the air pipe, the pneumatic output of the pneumatic drive (5) being arranged opposite the outer end face of the bearing body (12).
6. Bearing friction measuring device according to claim 5, characterized in that it further comprises a first fixed seat (3) and a support rod (4), said first fixed seat (3) being arranged in parallel with a second fixed seat (11), said first fixed seat (3) being connected to the pneumatic drive (5) by means of the support rod (4).
7. The bearing friction measuring device according to claim 6, further comprising a connecting plate (7), a rotating nut (8) and a first adapter bracket (9), wherein the top of the supporting rod (4) is provided with external threads, the rotating nut (8) is in threaded connection with the top of the supporting rod (4), the rotating nut (8) is connected with the connecting plate (7) through the first adapter bracket (9), and the connecting plate (7) is connected with the pneumatic driver (5).
8. The bearing friction force measuring device according to claim 7, further comprising a third fixing seat (14), a second switching frame (15), a connecting rod (16) and a laser speed measuring sensor (17), wherein the third fixing seat (14) is arranged in parallel with the second fixing seat (11), the third fixing seat (14) is fixedly connected with the second switching frame (15), the connecting rod (16) penetrates through the second switching frame (15) to be connected with the laser speed measuring sensor (17), and a detecting head of the laser speed measuring sensor (17) is arranged above an outer ring of the bearing body (12).
9. Bearing friction measuring device according to claim 8, characterized in that it further comprises a fixing frame (1), and the first fixing seat (3), the second fixing seat (11) and the third fixing seat (14) are all fixedly connected to the top of the fixing frame (1).
10. Bearing friction measuring device according to claim 9, characterized in that the bottom of the holder (1) is provided with feet (2), the feet (2) being universal wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323189869.9U CN221325894U (en) | 2023-11-24 | 2023-11-24 | Bearing friction force measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323189869.9U CN221325894U (en) | 2023-11-24 | 2023-11-24 | Bearing friction force measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN221325894U true CN221325894U (en) | 2024-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323189869.9U Active CN221325894U (en) | 2023-11-24 | 2023-11-24 | Bearing friction force measuring device |
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| CN (1) | CN221325894U (en) |
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2023
- 2023-11-24 CN CN202323189869.9U patent/CN221325894U/en active Active
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