CN111879515B - Bearing defect detection equipment - Google Patents
Bearing defect detection equipment Download PDFInfo
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- CN111879515B CN111879515B CN202010821697.4A CN202010821697A CN111879515B CN 111879515 B CN111879515 B CN 111879515B CN 202010821697 A CN202010821697 A CN 202010821697A CN 111879515 B CN111879515 B CN 111879515B
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- pressure head
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/08—Detecting presence of flaws or irregularities
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Abstract
The application relates to a bearing defect detection device, which relates to the field of detection devices and comprises a rack, wherein a driving motor and a mounting seat driven by the driving motor to rotate are arranged on the rack; the top seat is provided with a displacement sensor, a detection part is fixed on the pressure head, the detection part deviates from the center of the pressure head, the detection end of the displacement sensor is used for detecting the displacement of the detection part, and the connecting line direction of the displacement sensor and the detection part is along the axial direction of the bearing to be detected. The detection equipment detects whether the bearing has cracks or chips or not through the displacement sensor; the detection value of the displacement sensor is improved through the amplification effect of the lever principle, and the detection precision is improved; the detection equipment also has multiple functions of detecting the rotation resistance of the bearing and detecting the defects under the radial stress state.
Description
Technical Field
The application relates to the field of detection equipment, in particular to bearing defect detection equipment.
Background
After the bearing is produced, sampling is needed to detect the rotation resistance, and the bearing running for a long time can also detect the rotation resistance so as to determine whether the performance of the bearing is normal.
In the related art, fatigue detection of the bearing is generally achieved by driving the bearing to rotate by a motor and detecting the rotation resistance of the bearing by a torque sensor.
The related technology can detect the rotation resistance of the bearing during rotation, and no detection equipment can detect whether the bearing has cracks or chippings at present.
Disclosure of Invention
In order to detect whether there is crackle, clastic problem in the bearing, this application provides a bearing defect check out test set.
The application provides a bearing defect detection equipment adopts following technical scheme:
a bearing defect detection device comprises a rack, wherein a driving motor and a mounting seat driven by the driving motor to rotate are arranged on the rack, the mounting seat is used for mounting a bearing to be detected, a top seat is arranged on the rack, a pressure head is arranged on the top seat towards the mounting seat, the pressure head and the top seat are connected through a spring, and the pressure head and the mounting seat are respectively used for being fixed with two rings of the bearing to be detected; the bearing detection device is characterized in that a displacement sensor is arranged on the top seat, a detection part is fixed on the pressure head, the detection part deviates from the center of the pressure head, the detection end of the displacement sensor is used for detecting the displacement of the detection part, and the connecting line direction of the displacement sensor and the detection part is along the axial direction of a bearing to be detected.
Through adopting above-mentioned technical scheme, personnel install the bearing that awaits measuring on the mount pad, and the footstock removes and makes the pressure head press on waiting to detect the bearing after, and the spring is in by compressed state, and pressure head, mount pad are fixed through stiction and two rings of waiting to detect the bearing respectively. During detection, the driving motor is started, drives the mounting seat to rotate, and then the inner ring and the outer ring of the bearing rotate relatively. Because the pressure head and the top seat are connected by the spring, the angle of the pressure head in each direction can be changed. The elastic force of the spring enables the pressure head and the bearing to always keep a surface contact state, and the vibration of the outer ring of the bearing can be transmitted to the pressure head. When the bearing under test has defects such as cracks and chips, the bearing outer ring vibrates relative to the bearing inner ring.
The displacement sensor can detect the pressure head and produce data signal along the axial jump of bearing, and personnel judge whether there is crackle, clastic defect in the bearing through data signal, or judge the severity of defect.
Preferably, the number of the displacement sensors is at least two, and the displacement sensors are distributed along the circumferential direction of the pressure head.
Through adopting above-mentioned technical scheme, the beating of the different positions of pressure head circumference can be detected to a plurality of sensors to form more comprehensive a plurality of data, can improve personnel and judge the accuracy of bearing defect.
Preferably, the included angle between adjacent displacement sensors relative to the circumferential direction of the pressure head is ninety degrees.
Through adopting above-mentioned technical scheme, adjacent displacement sensor represents the vertical displacement of two mutually perpendicular's of pressure head X, Y coordinate department respectively to as the judgement index that the pressure head bottom surface is beated, the data of production easily record management, and convenient the comparison, thereby judge whether there is the defect in the bearing.
Preferably, the spring is provided with a plurality of springs, and the springs are distributed along the circumferential direction of the pressure head.
Through adopting above-mentioned technical scheme, when the spring was compressed, a plurality of springs can play better supporting effect for the pressure head, make the pressure head can reliably press on the bearing, do not influence the angle of pressure head self-adaptation simultaneously and rotate.
Preferably, the top seat is provided with a movable hole facing the pressure head, a connecting rod penetrates through the spring, one end of the connecting rod is connected with the pressure head, and the other end of the connecting rod penetrates through the movable hole; a movable gap is reserved between the outer wall of the connecting rod and the hole wall of the movable hole, a limiting block is arranged at the end part of the pressure head penetrating through the movable hole, and the limiting block cannot penetrate through the movable hole.
Through adopting above-mentioned technical scheme, the connecting rod is used for restricting the separation of pressure head and footstock to can restrict the extreme turned angle of pressure head, prevent that the pressure head from popping out to the side and hindering the people.
Preferably, the detection part extends out of the pressure head along the circumferential direction of the pressure head.
By adopting the technical scheme, the detection part is positioned outside the circumference of the pressure head, and the combination of the detection rod and the pressure head forms a lever; when the pressure head vibrates, the vibration is transmitted to the detection part through the detection rod, and the up-down jumping amount of the detection part is larger than the pressure head under the amplification action of the lever principle, so that the displacement sensor can conveniently detect the displacement amount.
Preferably, the rack is provided with a cushion block and a mounting frame, the mounting seat is arranged on the mounting frame, the cushion block supports the weight of the mounting frame through a top surface, and the top surface of the cushion block is inclined to the horizontal plane.
Through adopting above-mentioned technical scheme, the cushion top surface of slope makes mounting bracket, mount pad produce the slope, and during the detection, the axis of rotation of bearing deviates from in vertical direction, and the pressure head is pressed in the power of bearing still along vertical direction, and then the pressure head can exert radial force to the bearing to carry out resistance, defect detection under being in radial atress state to the bearing.
Preferably, a torque sensor is arranged between the driving motor and the mounting seat, and the torque of the driving motor is transmitted to the mounting seat through the torque sensor.
Through adopting above-mentioned technical scheme, on this check out test set carried out crackle, piece defect detection to the bearing basis, when driving motor ordered about the mount pad and rotated, torque sensor detected the rotation moment of torsion, and personnel judge through the signal of torque sensor output whether normal the rotation resistance of bearing. This check out test set can realize two kinds of bearing simultaneously and detect the function.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the problem that whether the bearing has cracks or chips is detected through the detected displacement by arranging the displacement sensor;
2. the detection value of the displacement sensor is improved through the amplification effect of the lever principle, and the detection precision is improved;
3. the detection equipment also has multiple functions of detecting the rotation resistance of the bearing and detecting the defects under the radial stress state.
Drawings
Fig. 1 is a perspective view of a first embodiment.
Fig. 2 is an enlarged view of fig. 1 at a.
Fig. 3 is a perspective sectional view of the first embodiment.
Fig. 4 is an exploded view of the second embodiment.
FIG. 5 is a sectional view of the second embodiment.
Description of reference numerals: 1. a frame; 2. a mounting frame; 21. a mounting seat; 22. a drive motor; 3. a top seat; 4. a pressure head; 11. a slide rail; 12. a drive source; 31. a spring; 32. a connecting rod; 321. a limiting block; 33. a movable hole; 331. an elastic sleeve; 41. a detection lever; 411. a detection unit; 34. a displacement sensor; 42. a compression surface; 23. a torque sensor; 211. mounting grooves; 13. and a cushion block.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The first embodiment is as follows:
The embodiment of the application discloses bearing defect detection equipment. Referring to fig. 1, the bearing defect detecting device includes a frame 1, a mounting frame 2 is arranged on the frame 1, a mounting seat 21 and a driving motor 22 for driving the mounting seat 21 to rotate are arranged on the mounting frame 2, and a bearing to be detected is arranged on the mounting seat 21. Still slide on the frame 1 and be provided with footstock 3, footstock 3 is located mounting bracket 2 directly over, and the bottom surface of footstock 3 is provided with pressure head 4, and pressure head 4, mount pad 21 are used for respectively with wait to detect two ring fixation of bearing.
The sliding direction of footstock 3 is along vertical direction, and sliding connection is established through setting up slide rail 11 between footstock 3 and frame 1, and footstock 3 is slided by the drive source 12 drive, and drive source 12 can be for cylinder or hydro-cylinder or electric cylinder, also can be motor screw mechanism, and pressure head 4 activity sets up in the bottom surface of footstock 3.
Referring to fig. 2 and 3, the pressure head 4 and the top base 3 are connected by the springs 31 and the connecting rods 32, the number of the springs 31 and the number of the connecting rods 32 are three, the springs 31 are sleeved outside the connecting rods 32 in a one-to-one correspondence manner, the springs 31 and the connecting rods 32 deviate from the center of the pressure head 4, and the springs 31 and the connecting rods 32 are distributed along the circumferential direction of the pressure head 4. The length direction of connecting rod 32 is along vertical direction, and the lower extreme of connecting rod 32 is fixed in the top surface of pressure head 4, and the board of footstock 3 is passed through to the upper end of connecting rod 32, and the upper end of connecting rod 32 is fixed with stopper 321. The top seat 3 supplies the connecting rod 32 to pass through by opening the movable hole 33, the aperture of the movable hole 33 is larger than the diameter of the connecting rod 32, a movable gap is left between the outer wall of the connecting rod 32 and the hole wall of the movable hole 33, an elastic sleeve 331 is arranged in the movable gap, and the size of the limiting block 321 can not pass through the movable hole 33. The two ends of the spring 31 are respectively abutted against the top seat 3 and the pressure head 4, and the spring 31 is provided with outward expansion elasticity.
Two detection rods 41 are fixed on the top surface of the pressure head 4, the two detection rods 41 are fixed into an L shape through the end parts, and the length directions of the two detection rods 41 are mutually vertical. The connecting position of the two detection rods 41 is located at the center line of the pressure head 4, the length direction of the detection rods 41 is along the radial direction of the pressure head 4, the end parts of the two detection rods 41, which are deviated from each other, extend out of the pressure head 4, and the top surface of the end part of the detection rod 41, which is deviated from the pressure head 4, is a detection part 411.
Two displacement sensors 34 are fixed on the top seat 3, the two displacement sensors 34 are respectively positioned right above the two detection parts 411, and the detection ends of the displacement sensors 34 downwards just face the corresponding detection parts 411. The displacement sensor 34 is a contact type, and includes a single telescopic rod, an end of which abuts against the detection portion 411, and outputs an electric signal when the telescopic rod moves relative to the sensor body. The displacement sensor 34 is used to detect the displacement of the detection portion 411 in the vertical direction. The bottom surface of the pressure head 4 is a pressing surface 42, and the pressing surface 42 is used for contacting with a bearing to be detected.
Referring to fig. 1 and 3, a mounting seat 21 is rotatably disposed on the mounting frame 2, a rotation axis of the mounting seat 21 is in a vertical direction, and the mounting seat 21 is driven to rotate by a driving motor 22. A torque sensor 23 is arranged between the driving motor 22 and the mounting seat 21, one end of the torque sensor 23 is fixed with an output shaft of the driving motor 22, the other end of the torque sensor 23 is coaxially fixed with the mounting seat 21, the torque of the driving motor 22 is transmitted to the mounting seat 21 through the torque sensor 23, and the torque sensor 23 can output a torque signal.
The top surface of the mounting seat 21 is provided with a mounting groove 211 for mounting a bearing to be detected. The bearing to be detected in this embodiment is a thrust bearing, and after the bearing is installed in the installation groove 211, the axial direction of the bearing is parallel to the direction of the connection line of the displacement sensor 34 and the detection part 411, and the groove wall of the installation groove 211 is in contact with the outer ring of the bearing; the pressing surface 42 at the bottom of the pressure head 4 is a plane, and the pressing surface 42 is used for contacting with the inner ring of the bearing.
The implementation principle of a bearing defect detection equipment of this application embodiment does: the indenter 4 is located in advance at a position away from the mount 21, and a person mounts the bearing to be inspected on the mount 21. The driving source 12 drives the top seat 3 to move downwards until the pressure head 4 presses on the bearing to be detected, and the spring 31 is in a compressed state along with the continuous downward movement of the top seat 3. Under the action of the pressure head 4, the pressure head 4 and the mounting seat 21 are respectively fixed with two rings of the bearing to be detected through static friction force.
The driving motor 22 is started, the driving motor 22 drives the mounting base 21 to rotate, relative rotation is generated between the inner ring and the outer ring of the bearing, in this state, the torque sensor 23 detects rotation torque, and personnel judge whether the rotation resistance of the bearing is normal or not through a signal output by the torque sensor 23.
Since the pressure head 4 presses the bearing through the pressing surface 42, the spring 31 is in a compressed state, and the connecting rod 32 can have a moving space in the moving hole 33, the angle of the pressure head 4 in each direction can be changed. The elastic force of the spring 31 keeps the pressing surface 42 in surface contact with the bearing at all times, and the vibration of the outer ring of the bearing can be transmitted to the ram 4. When a bearing under test has a defect such as a crack or a chip, the outer ring of the bearing vibrates relative to the inner ring.
Two displacement sensor 34 can detect the vertical beat of pressure head 4 on the horizontal plane, and two displacement sensor 34 represent pressure head 4 respectively along the vertical displacement of X, Y two mutually perpendicular's coordinate department to as the judgement index that the pressure head 4 bottom surface is beated, the data of production easily records the management, and conveniently compare, thereby judge whether there is the defect in the bearing, or judge the severity of defect.
The detecting portion 411 is located radially outward of the indenter 4, and the combination of the detecting lever 41 and the indenter 4 forms a lever; when the indenter 4 vibrates, the vibration is transmitted to the detecting portion 411 through the detecting rod 41, and the amount of vertical movement of the detecting portion 411 is larger than that of the indenter 4 by the amplification of the lever principle, so that the displacement sensor 34 can detect the amount of displacement.
The second embodiment:
the embodiment of the application further discloses bearing defect detection equipment, and the difference between the second embodiment and the first embodiment is that:
referring to fig. 4 and 5, a spacer 13 is fixed to the frame 1, and the spacer 13 supports the weight of the mounting frame 2 through the top surface. The top surface of the cushion block 13 is inclined with the horizontal plane, so that the mounting seat 21 is inclined along the inclination direction of the top surface of the cushion block 13; the pressing surface 42 is provided as an inclined surface, and the pressing surface 42 is inclined in conformity with the inclination direction of the top surface of the pad 13. In this state, the pressing head 4 can still press the bearing through self-adaptive rotation.
When the detection equipment of the embodiment detects, the rotation axis of the bearing deviates from the vertical direction, and the pressure head 4 presses the force of the bearing still along the vertical direction, so that the pressure head 4 can apply radial force to the bearing, and resistance and defect detection is performed on the bearing in a radial stress state. The obliquely arranged pressing surface 42 makes the distance between each displacement sensor 34 and the corresponding detecting part 411 the same or close, and the detection precision of the displacement sensor 34 is not easily affected during detection.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. The utility model provides a bearing defect detection equipment, includes frame (1), be equipped with driving motor (22) in frame (1), by driving motor (22) drive pivoted mount pad (21), mount pad (21) are used for the installation to wait the bearing that detects, its characterized in that: the bearing detection device is characterized in that a top seat (3) is arranged on the rack (1), a pressure head (4) is arranged on the top seat (3) towards the mounting seat (21), the pressure head (4) and the top seat (3) are connected through a spring (31), and the pressure head (4) and the mounting seat (21) are respectively used for being fixed with two rings of a bearing to be detected; a displacement sensor (34) is arranged on the top seat (3), a detection part (411) is fixed on the pressure head (4), the detection part (411) deviates from the center of the pressure head (4), the detection end of the displacement sensor (34) is used for detecting the displacement of the detection part (411), and the connecting line direction of the displacement sensor (34) and the detection part (411) is along the axial direction of the bearing to be detected;
the rack (1) is provided with a cushion block (13) and a mounting frame (2), the mounting seat (21) is arranged on the mounting frame (2), the driving motor (22) is specifically mounted on the mounting frame (2), the cushion block (13) supports the weight of the mounting frame (2) through the top surface, and the top surface of the cushion block (13) is inclined to the horizontal plane; the surface of the pressure head (4) for abutting against the bearing is a pressing surface (42), and the pressing surface (42) is inclined along the inclination direction of the top surface of the cushion block (13);
A movable hole (33) is formed in the top seat (3) towards the pressure head (4), a connecting rod (32) penetrates through the spring (31), one end of the connecting rod (32) is connected with the pressure head (4), and the other end of the connecting rod (32) penetrates through the movable hole (33); a movable gap is reserved between the outer wall of the connecting rod (32) and the wall of the movable hole (33), a limiting block (321) is arranged at the end part of the pressure head (4) penetrating through the movable hole (33), and the limiting block (321) cannot penetrate through the movable hole (33);
the detection part (411) extends out of the pressure head (4) along the circumferential direction of the pressure head (4).
2. A bearing defect inspection apparatus according to claim 1, wherein: the number of the displacement sensors (34) is at least two, and the displacement sensors (34) are distributed along the circumferential direction of the pressure head (4).
3. A bearing defect inspection apparatus according to claim 2, wherein: and the included angle between the adjacent displacement sensors (34) relative to the circumferential direction of the pressure head (4) is ninety degrees.
4. A bearing defect inspection apparatus according to claim 1, wherein: the springs (31) are arranged in a plurality, and the springs (31) are distributed along the circumferential direction of the pressure head (4).
5. A bearing defect inspection apparatus according to claim 1, wherein: a torque sensor (23) is arranged between the driving motor (22) and the mounting seat (21), and the torque of the driving motor (22) is transmitted to the mounting seat (21) through the torque sensor (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821697.4A CN111879515B (en) | 2020-08-15 | 2020-08-15 | Bearing defect detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821697.4A CN111879515B (en) | 2020-08-15 | 2020-08-15 | Bearing defect detection equipment |
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| CN111879515A CN111879515A (en) | 2020-11-03 |
| CN111879515B true CN111879515B (en) | 2022-07-29 |
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| CN202010821697.4A Active CN111879515B (en) | 2020-08-15 | 2020-08-15 | Bearing defect detection equipment |
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| CN112697430A (en) * | 2020-12-31 | 2021-04-23 | 玉环美尔伦机械股份有限公司 | Durability testing machine for shock absorber bearing |
| CN113340807A (en) * | 2021-06-18 | 2021-09-03 | 宁波顺超轴承有限公司 | Bearing surface damage detection device |
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| JP2015137926A (en) * | 2014-01-22 | 2015-07-30 | 日本精工株式会社 | Rotation transmission device with torque measuring instrument |
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| JP2636097B2 (en) * | 1991-08-08 | 1997-07-30 | 動力炉・核燃料開発事業団 | Monitoring device for the amount of wear of thrust bearings in immersion type electric pumps |
| CN2225676Y (en) * | 1995-04-26 | 1996-04-24 | 张祖明 | On line measuring tester for sliding thrust bearing accelerating abrasion |
| JP2004361390A (en) * | 2003-05-15 | 2004-12-24 | Nsk Ltd | Bearing vibration measurement device, bearing vibration measurement method and radial bearing with vibration measured by bearing vibration measurement device |
| CN201173860Y (en) * | 2008-03-20 | 2008-12-31 | 杭州奥普拓新技术有限公司 | Press head device for compacting bearing in bearing detection device |
| JP5172445B2 (en) * | 2008-04-15 | 2013-03-27 | Ｎｔｎ株式会社 | Thrust bearing rotational torque detector |
| CN102053015B (en) * | 2009-10-30 | 2014-01-15 | 中国石油化工股份有限公司 | Tester for thrust bearing |
| CN203011691U (en) * | 2012-11-05 | 2013-06-19 | 上海大学 | Dynamic and static load combination loading apparatus for thrust bearing experiment table |
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| CN107907208B (en) * | 2017-12-29 | 2024-03-22 | 宁波中亿自动化装备有限公司 | Bearing vibration measuring mechanism and bearing detecting equipment |
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| JP2015137926A (en) * | 2014-01-22 | 2015-07-30 | 日本精工株式会社 | Rotation transmission device with torque measuring instrument |
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