CN118129682B - Bearing clearance detection device and detection method - Google Patents

Abstract

The invention relates to the technical field of bearing detection, and particularly discloses a bearing clearance detection device and a bearing clearance detection method, comprising the following steps: the cylinder body is in sliding fit with a first shaft, a second shaft and a third shaft, the first clamping assembly comprises a first ring, a second ring and a first movable plate, the second clamping assembly comprises a third ring, a fourth ring and a second movable plate, the support frame is arranged in the cylinder body, and a first sensor is arranged on the support frame; according to the bearing clearance detection device and the detection method, the bearing inner ring and the bearing outer ring are extruded through rotation of the first movable plate and the second movable plate, the bearing inner ring and the bearing outer ring move oppositely, the height difference of the bearing inner ring and the bearing outer ring is recorded through the first sensor, and the bearing clearance detection device and the detection method can be suitable for clearance detection of bearings with different sizes and are high in detection data accuracy.

Description

Bearing clearance detection device and detection method

Technical Field

The invention relates to the technical field of bearing detection, in particular to a bearing clearance detection device and a bearing clearance detection method.

Background

The bearing play, which is also referred to as a bearing clearance, is a movement amount when one of the inner ring and the outer ring is fixed and then the other is moved in the radial direction or the axial direction when the bearing is not mounted on the shaft or the bearing housing. Bearing play can be divided into radial play and axial play according to the direction of movement.

In the related art, a bearing play detection device is generally used to detect a bearing, and such a device is generally composed of a mount to which an inner ring or an outer ring of the bearing is fixed, a moving member, and a measuring instrument.

Chinese patent CN117450890B discloses a bearing play detection device, the device drives screw first and screw second through the rotation of connecting rod, promotes grip block one and grip block two simultaneously, and grip block one drives extrusion mounting one and moves, and grip block two drives extrusion mounting two and moves, and extrusion mounting one and extrusion mounting two are carried out the centre gripping to the bearing, are convenient for fix the bearing, realize the detection of radial play and the axial play of bearing. However, because the outer ring of the bearing can move to two sides in the axial direction, the gaps moving to two sides are not necessarily the same, the device only detects the gaps moving to one side of the outer ring of the bearing, accurate data of the axial clearance cannot be measured, and meanwhile, the device cannot be suitable for measuring bearings with different sizes.

Disclosure of Invention

The invention provides a bearing clearance detection device and a detection method, which aim to solve the problems that in the related art, accurate data of axial clearance cannot be detected and the bearing clearance detection device and the detection method cannot be suitable for bearing measurement of different sizes.

The invention relates to a bearing clearance detection device and a detection method, comprising the following steps: a cylinder body, a first clamping component, a second clamping component and a supporting frame,

The cylinder body is in sliding fit with a first shaft, a second shaft and a third shaft, the first shaft is positioned in the center of the cylinder body, a connecting plate is arranged at the bottom end of the first shaft, two ends of the connecting plate are respectively connected with the second shaft and the third shaft, a first driving piece is arranged in the cylinder body, and the first driving piece is connected with the connecting plate;

The first clamping assembly comprises a first ring, a second ring and a first movable plate, the first ring and the second ring are vertically and alternately distributed on the first shaft, the first ring is hinged with the first movable plate through a first connecting rod, the second ring is hinged with the first movable plate through a second connecting rod, a fixed seat is sleeved outside the first shaft, the bottom end of the fixed seat is connected with the cylinder body through a mounting seat, and the top end of the fixed seat is positioned between the first ring and the second ring and is rotationally connected with the first movable plate;

the second clamping assembly comprises a third ring, a fourth ring and a second movable plate, the third ring and the fourth ring are vertically and alternately distributed in the cylinder body and are matched with the second shaft and the third shaft, the third ring is hinged with the second movable plate through a third connecting rod, the fourth ring is hinged with the second movable plate through a fourth connecting rod, a connecting ring is arranged on the inner wall of the cylinder body, the connecting ring is located between the third ring and the fourth ring, and the second movable plate is rotationally connected with the connecting ring;

the support frame is erected in the cylinder body, the support frame is located between the first movable plate and the second movable plate, and a first sensor is arranged on the support frame.

Preferably, the first shaft, the second shaft and the third shaft are in running fit with the connecting plate, a second driving piece is arranged in the cylinder body and used for driving the first shaft to rotate, a first transmission belt is arranged between the first shaft and the second shaft, a second transmission belt is arranged between the first shaft and the third shaft, a first thread and a second thread with opposite rotation directions are arranged on the first shaft, a first ring is in running fit with the first thread, a second ring is in running fit with the second thread, a third ring is in running fit with the third thread, a fourth ring is in running fit with the fourth thread, a first rod is arranged between the first movable plate and the fixed seat, one end of the first rod is in running connection with the first movable plate, the other end of the first rod is connected with the fixed seat through a first elastic piece, a second ring is arranged between the second movable plate and the second ring, the second rod is connected with the other end of the second movable plate through a second rod, and the other end of the second ring is in running connection with the second movable plate.

Preferably, a sliding plate is further arranged in the cylinder, the sliding plate is fixedly connected with the second driving piece, a third driving piece is arranged between the sliding plate and the cylinder and used for driving the sliding plate to move, a driving gear is arranged at the output end of the second driving piece, a first gear is arranged on the first shaft, and the driving gear can be meshed with the first gear.

Preferably, the mount pad with the barrel rotates to be connected, be equipped with the fourth driving piece on the barrel, the fourth driving piece is used for the drive the mount pad rotates, be equipped with the cooperation key on the mount pad, the bottom of fixing base is equipped with along its radially extending's sliding tray, cooperation key sliding fit is in the sliding tray, still be equipped with the second sensor on the support frame. Preferably, a first limit groove and a second limit groove are formed in the inner wall of the cylinder, a first marble is arranged in the third ring and is elastically connected with the third ring, the first marble can extend into the first limit groove, a second marble is arranged in the fourth ring, and the second marble can extend into the second limit groove.

Preferably, the outer side wall of the first movable plate is provided with a first friction pad, and the inner side wall of the second movable plate is provided with a second friction pad.

Preferably, the support frame is provided with an avoidance groove.

An axial play detection method based on the bearing play detection device comprises the following steps:

firstly, mounting and positioning, and placing a bearing on a support frame;

And the second step is that, the first shaft, the second shaft and the third shaft are driven to move up and down through the first driving piece, the first ring, the second ring, the third ring and the fourth ring are driven to move up and down, when the first ring, the second ring, the third ring and the fourth ring move up to the highest position, the bottom ends of the first movable plate and the second movable plate incline inwards, the top ends of the first movable plate and the second movable plate incline outwards, the first movable plate and the top of the bearing inner ring are abutted, the second movable plate and the bottom of the bearing outer ring are abutted, the first movable plate applies downward pressure to the bearing inner ring, the second movable plate applies upward thrust to the bearing outer ring, the bearing inner ring moves downwards, the first sensor records the height difference between the bearing inner ring and the bearing outer ring, and the second movable plate applies downward thrust to the bearing inner ring when the first ring, the bottom ends of the first movable plate and the second movable plate incline inwards, the top ends of the first movable plate and the second movable plate and the bottom of the bearing inner ring are abutted against the bottom of the bearing inner ring, the second movable plate applies downward thrust to the first movable plate and the bearing outer ring, and the second movable plate downwards moves upwards through the first sensor records the height difference between the first movable plate and the bearing outer ring and the second movable plate.

The radial play detection method of the bearing play detection device comprises the following steps:

firstly, mounting and positioning, and placing a bearing on a support frame;

And the second step, measuring, namely driving the connecting plate to move up and down through the first driving piece, driving the first ring, the second ring, the third ring and the fourth ring to move up and down synchronously until the first marble stretches into the first limiting groove and the second marble stretches into the second limiting groove, at the moment, the first movable plate and the second movable plate are in vertical distribution, then driving the sliding plate to move through the second driving piece, enabling the driving gear to be meshed with the first gear, driving the first shaft to rotate through the third driving piece, driving the second shaft and the third shaft to rotate synchronously, enabling the first ring and the second ring to be close to each other, enabling the third ring and the fourth ring to be close to each other, further driving the first movable plate to be close to the bearing inner ring, enabling the first movable plate and the second movable plate to clamp the bearing, driving the mounting seat to rotate through the fourth driving piece, and recording the displacement of the fixing seat and the mounting seat in the sliding groove in a matching key in the rotating process through the second driving piece.

The beneficial effects are that:

According to the bearing clearance detection device and the bearing clearance detection method, the bearing inner ring and the bearing outer ring can be pushed to move oppositely through the rotation of the first movable plate and the second movable plate, the height difference between the bearing inner ring and the bearing outer ring is recorded through the first sensor, the height difference between the bearing outer ring and the bearing inner ring is the axial clearance of the bearing, and meanwhile the measurement mode can be suitable for axial clearance detection of bearings with different sizes without adjusting equipment, and the method is convenient and quick.

Drawings

Fig. 1 is a sectional view of a bearing play detection device of an embodiment of the present invention.

Fig. 2 is another cross-sectional view of the bearing play detection device of the embodiment of the present invention.

Fig. 3 is a schematic structural view of a first clamping assembly according to an embodiment of the invention.

Fig. 4 is a schematic diagram of the cooperation of the mounting base and the fixing base according to an embodiment of the present invention.

Fig. 5 is a schematic view of a supporting frame structure according to an embodiment of the invention.

Fig. 6 is a schematic view showing the state of the first movable plate and the second movable plate for measuring the axial play in the embodiment of the present invention.

Fig. 7 is another state diagram of the axial play measurement first movable plate, second movable plate of the embodiment of the present invention.

Fig. 8 is a schematic view showing the state of the first movable plate and the second movable plate for measuring radial play in the embodiment of the present invention.

Reference numerals:

1. A cylinder; 2. a first shaft; 21. a first gear; 22. a first belt; 23. a second belt; 3. a second shaft; 4. a third shaft; 5. a connecting plate; 6. a first driving member; 7. a sliding plate; 8. a second driving member; 81. a drive gear; 9. a third driving member; 101. a first ring; 102. a second ring; 103. a first movable plate; 1031. a first friction pad; 104. a first lever; 105. a first link; 106. a second link; 11. a mounting base; 111. a mating key; 12. a fixing seat; 121. a sliding groove; 13. a fourth driving member; 141. a third ring; 1411. a first marble; 142. a fourth ring; 1421. a second marble; 143. a second movable plate; 1431. a second friction pad; 144. a second lever; 145. a third link; 146. a fourth link; 15. a connecting ring; 16. a support frame; 161. an avoidance groove; 17. a first sensor; 18. and a second sensor.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 to 8, the bearing play detection device of the present invention includes: the barrel 1, the first clamping assembly, the second clamping assembly and the support frame 16.

Specifically, as shown in fig. 1 and 2, the top of the cylinder 1 is provided with an opening, a first shaft 2 is arranged in the cylinder 1, the first shaft 2 and the cylinder 1 are coaxially distributed, a connecting plate 5 is matched at the bottom end of the first shaft 2, a first driving piece 6 is fixedly connected at the bottom end of the connecting plate 5, and the first driving piece 6 is a hydraulic cylinder and is used for driving the connecting plate 5 to move up and down. The both ends of connecting plate 5 have normal running fit respectively second shaft 3 and third shaft 4, and the upper portion of first shaft 2 is equipped with first screw thread, and the lower part of first shaft 2 is equipped with the second screw thread, and first screw thread and second screw thread revolve opposite direction, and the upper portion of second shaft 3 and third shaft 4 all is equipped with the third screw thread, and the lower part of second shaft 3 and third shaft 4 all is equipped with the fourth screw thread, and the third screw thread revolves opposite direction with the fourth screw thread. The sliding fit of the bottom of the barrel 1 is provided with a sliding plate 7, a third driving piece 9 is arranged between the sliding plate 7 and the barrel 1, the third driving piece 9 is a hydraulic cylinder and is used for driving the sliding plate 7 to move in the barrel 1, the sliding plate 7 is fixedly connected with a second driving piece 8, the second driving piece 8 is a motor, the output end of the second driving piece is provided with a driving gear 81, the first shaft 2 is provided with a first gear 21, and the driving gear 81 can be meshed with the first gear 21, so that the second driving piece 8 can drive the first shaft 2 to rotate. A first transmission belt 22 is arranged between the first shaft 2 and the second shaft 3, a second transmission belt 23 is arranged between the first shaft 2 and the third shaft 4, and the second shaft 3 and the third shaft 4 rotate synchronously with the first shaft 2.

As shown in fig. 1 to 4, the first clamping assembly includes a first ring 101, a second ring 102 and a first movable plate 103, the first ring 101 and the second ring 102 are vertically and alternately distributed on the first shaft 2, the first ring 101 is located above the second ring 102, the first ring 101 is in threaded fit with the first thread, the second ring 102 is in threaded fit with the second thread, a mounting seat 11 is disposed at the bottom of the cylinder 1, the mounting seat 11 is sleeved outside the first shaft 2 and is alternately distributed with the first shaft 2, the mounting seat 11 is in running fit with the cylinder 1, a fixing seat 12 is disposed on the mounting seat 11, the fixing seat 12 is sleeved outside the first shaft 2 and is alternately distributed with the first shaft 2, a matching key 111 is disposed at the top end of the mounting seat 11, sliding grooves 121 extending radially along the fixing seat 12 are disposed at the bottom end of the fixing seat 12, the two sliding grooves 121 are symmetrically distributed at two sides of the fixing seat 12, the two matching keys 111 can be respectively in sliding fit with the corresponding sliding grooves 121, a fourth driving member 13 is disposed in the cylinder 1, the fourth driving member 13 is a motor, and the fourth driving member 13 is a gear to drive the motor to rotate the mounting seat 11 and rotate synchronously with the fixing seat 11 through the gear transmission. The first movable plate 103 has a plurality ofly, and evenly distributes in the outside of fixing base 12 along the circumference of fixing base 12 at the interval, is equipped with first pole 104 between first movable plate 103 and the fixing base 12, and first pole 104 is located between first ring 101 and the second ring 102, and one end and the first movable plate 103 of first pole 104 rotate to be connected, and its other end is connected with fixing base 12 through first elastic component, and first pole 104 can stretch into in the fixing base 12, and first ring 101 articulates with first movable plate 103 through first connecting rod 105, and second ring 102 articulates with first movable plate 103 through second connecting rod 106. The first movable plate 103 is provided on an outer sidewall thereof with a first friction pad 1031, and the first friction pad 1031 is made of hard rubber for increasing friction of the first movable plate 103.

As shown in fig. 1 and 2, the second clamping assembly includes a third ring 141, a fourth ring 142 and a second movable plate 143, the third ring 141 and the fourth ring 142 are vertically and alternately arranged in the cylinder 1, the third ring 141 is respectively engaged with third threads on the second shaft 3 and the third shaft 4, the fourth ring 142 is respectively engaged with fourth threads on the second shaft 3 and the third shaft 4, a connection ring 15 is provided on an inner wall of the cylinder 1, the connection ring 15 is positioned between the third ring 141 and the fourth ring 142, the second movable plate 143 has a plurality of second movable plates 143, the number of the second movable plates 143 corresponds to the first movable plate 103, the plurality of second movable plates 143 are equally spaced along the circumference of the cylinder 1, a second rod 144 is provided between the second movable plate 143 and the connection ring 15, one end of the second rod 144 is rotatably connected with the second movable plate 143, the other end of the second rod 144 is connected with the connection ring 15 through a second elastic member, the second rod 144 can extend into the connection ring 15, the third ring 141 is hinged with the second movable plate 143 through the third connecting rod 145, and the fourth movable plate 143 is hinged with the fourth movable plate 143 through a fourth connecting rod 146. The second movable plate 143 is provided on an inner sidewall thereof with a second friction pad 1431, and the second friction pad 1431 is formed of hard rubber for increasing a friction force of the second movable plate 143.

As shown in fig. 1 and 5, the support 16 is located between the first movable plate 103 and the second movable plate 143, and the support 16 is fixedly connected with a first sensor 17 and a second sensor 18, where the first sensor 17 and the second sensor 18 are displacement sensors. The outer side wall of the support frame 16 is also provided with an avoidance groove 161, and the support frame 16 can be prevented from obstructing the rotation of the second movable plate 143 through the avoidance groove 161.

The axial play detection method of the bearing play detection device comprises the following steps:

In a first step, the bearings are mounted in place on the support frame 16.

In the second step, the connecting plate 5 is driven to move up and down, the first shaft 2, the second shaft 3 and the third shaft 4 are driven to move up and down in synchronization with the connecting plate 5, and the first ring 101, the second ring 102, the third ring 141 and the fourth ring 142 are driven to move up and down, when the first ring 101, the second ring 102, the third ring 141 and the fourth ring 142 move up to the highest position, as shown in fig. 6, the bottom ends of the first movable plate 103 and the second movable plate 143 incline inwards, the top ends of the first movable plate 103 and the bearing inner ring are stopped, the second movable plate 143 and the bottom of the bearing outer ring are stopped, the first movable plate 103 applies downward pressure to the bearing inner ring, the second movable plate 143 applies upward thrust to the bearing outer ring, so that the bearing inner ring moves downwards, the bearing outer ring moves upward, the height difference between the bearing inner ring and the bearing outer ring is recorded by the first sensor 17, when the first ring 101, the second ring 102, the third ring 141 and the fourth ring 142 move upward to the lowest position, as shown in fig. 7, the bottom ends of the first movable plate 103 and the second movable plate 143 incline outward, the top ends of the first movable plate 103 and the second movable plate 143 incline inward, the bottom of the first movable plate 103 and the bottom of the bearing inner ring are stopped, the second movable plate 143 and the top of the bearing outer ring are stopped, the first movable plate 103 applies upward thrust to the bearing inner ring, the second movable plate 143 applies downward pressure to the bearing outer ring, so that the bearing inner ring moves upward, the bearing outer ring moves downward, and the height difference between the bearing inner ring and the bearing outer ring is recorded again by the first sensor 17. The height difference between the outer ring and the inner ring recorded by the first sensor 17 is the axial play of the bearing.

The radial play detection method of the bearing play detection device comprises the following steps:

First, mounting and positioning, and placing a bearing on a support frame 16;

In the second step, the first driving piece 6 drives the connecting plate 5 to move up and down, and drives the first ring 101, the second ring 102, the third ring 141 and the fourth ring 142 to move up and down synchronously until the first marble 1411 stretches into the first limiting groove, the second marble 1421 stretches into the second limiting groove, as shown in fig. 8, at this time, the first movable plate 103 and the second movable plate 143 are in a vertical distribution state, then the second driving piece 8 drives the sliding plate 7 to move, so that the driving gear 81 is meshed with the first gear 21, and drives the first shaft 2 to rotate through the third driving piece 9, the first shaft 2 drives the second shaft 3 and the third shaft 4 to rotate synchronously, so that the first ring 101 and the second ring 102 are close to each other, the third ring 141 and the fourth ring 142 are close to each other, and further the first movable plate 103 is close to the inner ring of the bearing, the second movable plate 143 is close to the outer ring of the bearing, until the first movable plate 103 and the second movable plate 143 can clamp the bearing, the mounting seat 11 is driven by the fourth driving piece 13 to rotate, the mounting seat 11 is synchronously rotated, the second driving seat 12 and the mounting seat 11 is synchronously rotated, the second shaft assembly is driven by the second driving piece 8 to rotate, the first shaft 2 rotates, the first shaft assembly rotates synchronously, the second shaft 2 drives the second shaft 3 and the third shaft 4 rotates synchronously with the third shaft 4, so that the first ring 101 rotates synchronously with the second shaft 2 and the fourth ring 142 rotates, the third ring 142 rotates, further, and the first movable plate 103 rotates the first movable plate 103 is close to the inner ring, and second movable plate 143, and the bearing, as shown in the second movable plate 143, and the bearing 11 rotates. The displacement of the mating key 111 in the sliding groove 121 is the radial play of the bearing.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (9)

1. A bearing play detection device characterized by comprising:

The novel rotary drum comprises a drum body (1), wherein the drum body (1) is in sliding fit with a first shaft (2), a second shaft (3) and a third shaft (4), the first shaft (2) is positioned at the center of the drum body (1), a connecting plate (5) is arranged at the bottom end of the first shaft (2), two ends of the connecting plate (5) are respectively connected with the second shaft (3) and the third shaft (4), a first driving piece (6) is arranged in the drum body (1), and the first driving piece (6) is connected with the connecting plate (5);

The first clamping assembly comprises a first ring (101), a second ring (102) and a first movable plate (103), wherein the first ring (101) and the second ring (102) are vertically distributed on the first shaft (2) at intervals, the first ring (101) is hinged with the first movable plate (103) through a first connecting rod (105), the second ring (102) is hinged with the first movable plate (103) through a second connecting rod (106), a fixed seat (12) is sleeved on the outer side of the first shaft (2), the bottom end of the fixed seat (12) is connected with the cylinder (1) through a mounting seat (11), and the top end of the fixed seat (12) is located between the first ring (101) and the second ring (102) and is rotationally connected with the first movable plate (103).

The second clamping assembly comprises a third ring (141), a fourth ring (142) and a second movable plate (143), wherein the third ring (141) and the fourth ring (142) are vertically distributed in the cylinder body (1) at intervals, and are matched with the second shaft (3) and the third shaft (4), the third ring (141) is hinged with the second movable plate (143) through a third connecting rod (145), the fourth ring (142) is hinged with the second movable plate (143) through a fourth connecting rod (146), a connecting ring (15) is arranged on the inner wall of the cylinder body (1), the connecting ring (15) is positioned between the third ring (141) and the fourth ring (142), and the second movable plate (143) is rotationally connected with the connecting ring (15).

The support frame (16), support frame (16) are established in barrel (1), support frame (16) are located between first fly leaf (103) and second fly leaf (143), be equipped with first sensor (17) on support frame (16).

2. The bearing play detection device according to claim 1, wherein the first shaft (2), the second shaft (3) and the third shaft (4) are in running fit with the connecting plate (5), a second driving member (8) is arranged in the cylinder (1), the second driving member (8) is used for driving the first shaft (2) to rotate, a first transmission belt (22) is arranged between the first shaft (2) and the second shaft (3), a second transmission belt (23) is arranged between the first shaft (2) and the third shaft (4), a first thread and a second thread with opposite rotation directions are arranged on the first shaft (2), the first ring (101) is in running fit with the first thread, the second ring (102) is in running fit with the second thread, a third thread and a fourth thread with opposite rotation directions are arranged on the second shaft (3) and the third shaft (4), a third ring (141) is in running fit with the third thread, a fourth ring (103) is in running fit with the first shaft (4) and the second shaft (4) is connected with the first fixed seat (104) by a first shaft (103) and a second fixed seat (104), a second rod (144) is arranged between the second movable plate (143) and the connecting ring (15), one end of the second rod (144) is rotatably connected with the second movable plate (143), and the other end of the second rod is connected with the connecting ring (15) through a second elastic piece.

3. Bearing play detection device according to claim 2, characterized in that a sliding plate (7) is further arranged in the cylinder (1), the sliding plate (7) is fixedly connected with the second driving piece (8), a third driving piece (9) is arranged between the sliding plate (7) and the cylinder (1), the third driving piece (9) is used for driving the sliding plate (7) to move, a driving gear (81) is arranged at the output end of the second driving piece (8), a first gear (21) is arranged on the first shaft (2), and the driving gear (81) can be meshed with the first gear (21).

4. A bearing play detection device according to claim 3, characterized in that the mounting base (11) is rotatably connected with the cylinder body (1), a fourth driving member (13) is arranged on the cylinder body (1), the fourth driving member (13) is used for driving the mounting base (11) to rotate, a matching key (111) is arranged on the mounting base (11), a sliding groove (121) extending along the radial direction of the sliding groove is arranged at the bottom end of the fixing base (12), the matching key (111) is slidably matched in the sliding groove (121), and a second sensor (18) is further arranged on the supporting frame (16).

5. The bearing play detection device according to claim 4, wherein a first limit groove and a second limit groove are formed in an inner wall of the cylinder body (1), a first ball (1411) is arranged in the third ring (141), the first ball (1411) is elastically connected with the third ring (141), the first ball can extend into the first limit groove, a second ball (1421) is arranged in the fourth ring (142), and the second ball (1421) can extend into the second limit groove.

6. The bearing play detection device according to claim 5, characterized in that the outer side wall of the first movable plate (103) is provided with a first friction pad (1031), and the inner side wall of the second movable plate (143) is provided with a second friction pad (1431).

7. The bearing play detection device according to claim 6, wherein the support frame (16) is provided with a avoidance groove (161).

8. An axial play detection method based on the bearing play detection device according to claim 7, characterized by comprising the steps of:

firstly, mounting and positioning, and placing a bearing on a support frame (16);

A second step of driving the first shaft (2), the second shaft (3) and the third shaft (4) to move up and down through the first driving piece (6), driving the first ring (101), the second ring (102), the third ring (141) and the fourth ring (142) to move up and down, when the first ring (101), the second ring (102), the third ring (141) and the fourth ring (142) move up to the highest position, the top ends of the first movable plate (103) and the second movable plate (143) incline inwards, the top ends of the first movable plate (103) and the top ends of the bearing inner ring are stopped, the second movable plate (143) and the bottom ends of the bearing outer ring are stopped, the first movable plate (103) and the bearing inner ring are stopped, the second movable plate (143) and the bottom ends of the bearing inner ring are stopped, the bearing inner ring is forced upwards, the bearing inner ring is forced downwards, the bearing inner ring is forced upwards to move, the height difference between the bearing inner ring and the bearing outer ring is recorded through the first sensor (17), when the first ring (101), the second ring (102) and the fourth movable plate (143) move up and the bottom ends of the bearing inner ring (103) are stopped, the first movable plate (103) and the second movable plate (143) and the bottom ends of the second movable plate (103) are stopped upwards, the first movable plate (103) and the second movable plate (143) are stopped upwards, the second movable plate (143) applies downward pressure to the bearing outer ring, so that the bearing inner ring moves upward, the bearing outer ring moves downward, and the height difference between the bearing inner ring and the bearing outer ring is recorded again through the first sensor (17).

9. A radial play detection method based on the bearing play detection device according to claim 7, characterized by comprising the steps of:

firstly, mounting and positioning, and placing a bearing on a support frame (16);

A second step, measuring, the connecting plate (5) is driven to move up and down through the first driving piece (6), and the first ring (101), the second ring (102), the third ring (141) and the fourth ring (142) are driven to move up and down synchronously until the first marble (1411) stretches into the first limit groove, the second marble (1421) stretches into the second limit groove, at the moment, the first movable plate (103) and the second movable plate (143) are in a vertical distribution state, then the sliding plate (7) is driven to move through the second driving piece (8), the driving gear (81) is meshed with the first gear (21), the first shaft (2) is driven to rotate through the third driving piece (9), the first shaft (2) drives the second shaft (3) and the third shaft (4) to rotate synchronously, the first ring (101) and the second ring (102) are close to each other, the third ring (141) and the fourth ring (142) are close to each other, the first movable plate (103) is further pushed to be close to the bearing, the second movable plate (103) is enabled to be close to the first movable plate (11) and the outer ring (11) to be clamped by the second movable plate, the displacement of the matching key (111) in the sliding groove (121) during the rotation process of the fixed seat (12) and the mounting seat (11) is recorded by the second sensor (18).