A crane bearing inner diameter runout condition detection device and detection method

Abstract

The application provides a crane bearing inner diameter runout condition detection device, comprising a bottom box, a support plate provided with a lifting rod, a positioning assembly comprising a rotating sleeve provided with a fixed screw head, a driving assembly comprising a driving piece in transmission connection with the rotating sleeve, a measuring assembly comprising a lifting seat provided with a probe and a mounting plate on opposite sides, the mounting plate being provided with a connecting rod, the lifting rod being provided with a spring, a measuring grating in cooperation with the probe, and a control assembly in electrical connection with the driving piece and the measuring grating. The application also provides a crane bearing inner diameter runout condition detection method based on the above crane bearing inner diameter runout condition detection device. The application solves the technical problems of manual reading, adjustment of bearing position and data processing operation when detecting the bearing inner ring runout, and has the technical effects of automatic detection of the bearing inner ring runout and automatic and accurate measurement.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a crane bearing inner diameter runout testing device and a crane bearing inner diameter runout testing method based on the above-mentioned crane bearing inner diameter runout testing device. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. During the operation of a crane, its internal power transmission is accomplished by shafts and gears. The installation of shafts and gears requires the use of bearings, so the quality of the bearings will directly affect the overall quality of the crane.

[0003] Chinese invention patent CN205860903U discloses an adjustable bearing inner ring runout detection device, including a worktable, a mounting table, a slide, a mounting frame, a measuring device, a set bolt, and a dial indicator. The worktable has a mounting platform with an annular groove that engages with the slide. The slide moves circumferentially within the annular groove. Several first grooves are formed within the slide, each containing a set bolt. Each first groove engages with the slide via a second spring. A mounting support is located at the center of the mounting table, and a mounting frame is located on the side wall of the mounting support. The measuring device has an inverted L-shaped cross-section and a measuring section at its upper end. A first spring is fixed to the right end of the mounting frame and connected to the measuring section. A baffle is located on the right end of the measuring device, closely abutting the measuring rod of the dial indicator, which is mounted on a fixed base. The aforementioned adjustable bearing inner ring runout detection device combines a slide, mounting frame, measuring device, set bolt, and dial indicator to ensure that the measuring part is in close contact with the inner wall of the inner ring, thereby improving detection accuracy.

[0004] The adjustable bearing inner ring runout detection device disclosed in the aforementioned invention patent requires manual reading of the micrometer during use. Manual reading is prone to errors, and the measurement requires manual adjustment of the slide to measure multiple positions of the bearing inner ring. The degree of automation is low, and the acquired measurement data still needs to be processed manually, resulting in a large workload for operators and affecting measurement efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a crane bearing inner diameter runout detection device and a crane bearing inner diameter runout detection method based on the aforementioned crane bearing inner diameter runout detection device. It solves the problems of requiring manual reading, bearing position adjustment, and data processing operations when detecting the runout of the bearing inner ring in existing technologies.

[0006] According to an embodiment of the present invention, a crane bearing inner diameter runout detection device includes: a base box; a support plate vertically disposed on the base box, having a lifting groove thereon and a lifting rod disposed within the lifting groove, the axial direction of the lifting rod being vertical; a positioning assembly including a rotating sleeve rotatably disposed on the support plate, the rotating sleeve having a fixing screw that can move radially along the rotating sleeve, one end of the fixing screw extending into the rotating sleeve having a rubber head; a driving assembly including a driving component disposed within the base box, the driving component being pulsatorically connected to the rotating sleeve and driving the rotating sleeve to rotate on the support plate; and a measuring assembly including a measuring component sleeved on the base box. The lifting rod has a lifting seat that can slide along it. Probes and mounting plates are respectively provided on opposite sides of the lifting seat. A connecting rod that can move vertically up and down is provided on the mounting plate, and the connecting rod is located inside the rotating sleeve. One end of the connecting rod has a contact ball. A spring is fitted on the lifting rod and abuts against the lifting seat. The spring drives the contact ball to move towards the inner peripheral wall of the rotating sleeve. A measuring grating is fixed on the support plate and cooperates with the probe to measure the height of the probe. A control component is located inside the base box and is electrically connected to the driving component and the measuring grating.

[0007] On the other hand, according to an embodiment of the present invention, a method for detecting the inner diameter runout of a crane bearing is also provided. Based on the above-mentioned crane bearing inner diameter runout detection device, the method includes the following steps: S1, placing the bearing to be tested into a rotating sleeve, and moving the rubber head to abut against the bearing sleeve to fix the bearing sleeve inside the rotating sleeve; S2, moving the lifting seat to move the probe to a position where the measurement grating reading is 0; S3, moving the connecting rod to abut against the inner wall of the bearing sleeve; S4, the control component starts the drive component to drive the rotating sleeve to rotate. After the bearing seat rotates at least one revolution, the control component controls the drive component to shut off. During the rotation of the rotating sleeve, the control component acquires the reading of the measurement grating. The runout of the inner diameter of the bearing sleeve can be determined based on the change in the measurement grating reading.

[0008] Compared with existing technologies, this invention has the following advantages: By employing a rotating sleeve and a rubber head mounted on the rotating sleeve to clamp the bearing sleeve to be tested, and driven by a driving component to rotate the rotating sleeve and thus the bearing sleeve, the contact ball remains in contact with the inner wall of the bearing sleeve during the rotation of the bearing sleeve. As the inner diameter of the bearing sleeve changes, the contact ball rises and falls vertically and drives the lifting seat to move. The height of the probe on the lifting seat changes with the movement of the lifting seat, and the measuring grating can measure the height change of the probe. The control component can automatically detect the inner diameter runout of the bearing sleeve by acquiring the reading change of the measuring grating during the rotation of the rotating sleeve. During measurement, the inner diameter of the bearing sleeve at multiple positions can be obtained without manually adjusting the position of the bearing sleeve. Moreover, no manual reading is required during the measurement process, and the runout of the bearing sleeve's inner diameter can be intuitively obtained by measuring the reading change of the measuring grating, which facilitates subsequent data processing. It solves the technical problem of needing to manually read the data, adjust the bearing position, and process the data when detecting the runout of the bearing inner ring, and achieves the technical effect of automatically detecting the runout of the bearing inner ring and realizing automated and accurate measurement. Attached Figure Description

[0009] Figure 1 This is a cross-sectional view of the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention;

[0010] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0011] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0012] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0013] Figure 5 This is a schematic diagram of the pointer and indicator groove in the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention;

[0014] Figure 6 This is a side view of the detection grating in the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention;

[0015] Figure 7 This is a schematic diagram of the structure of the rubber sheet in the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention;

[0016] Figure 8 This is a cross-sectional view of the detection grating in the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention;

[0017] Figure 9This is a schematic diagram of the control components in the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention;

[0018] Figure 10 This is a line graph of the inner diameter runout of the bearing sleeve, generated by a computer in the crane bearing inner diameter runout detection device according to Embodiment 1 of the present invention.

[0019] Figure 11 This is a step diagram of the crane bearing inner diameter runout detection method according to Embodiment 2 of the present invention.

[0020] In the above attached figures: 100, bearing sleeve; 200, base box; 201, bracket plate; 300, rotating sleeve; 301, mounting sleeve; 302, first threaded sleeve; 303, fixing screw; 304, rubber head; 305, clearance hole; 306, mounting ring; 307, mounting screw; 308, mounting nut; 309, positioning ring; 400, driving component; 401, gear ring; 402, groove; 403, shaft; 404, transmission gear; 405, partition plate; 406, output shaft; 407, drive gear; 500, lifting seat; 501, lifting groove; 502, mounting groove; 503, clearance groove; 504, lifting rod; 505, spring; 506. Mounting plate; 507, connecting rod; 508, contact ball; 509, probe; 510, disc; 511, pointer; 512, indicator slot; 513, second threaded sleeve; 514, scale line; 515, reading ring; 600, measuring grating; 601, housing; 602, transmitter; 603, receiver; 604, through slot; 605, optical axis; 606, photosensitive head; 607, rubber sheet; 608, protrusion; 609, notch; 700, control assembly; 701, PLC controller; 702, control switch; 703, computer; 704, display screen; 705, external power supply; 706, time relay; 707, A / D converter. Detailed Implementation

[0021] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Example 1

[0023] like Figures 1 to 11 As shown, Embodiment 1 of the present invention proposes a crane bearing inner diameter runout detection device, which is used to detect the runout of the inner diameter of the crane bearing in order to detect the quality of the bearing.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3The crane bearing inner diameter runout detection device includes a base box 200 and a support plate 201 vertically mounted on the base box 200. The support plate 201 is provided with a lifting groove 501 and a lifting rod 504 is provided in the lifting groove 501. The axis of the lifting rod 504 is vertical. The support plate 201 is also provided with a positioning component, a measuring component and a measuring grating 600. The base box 200 is provided with a drive component and a control component 700.

[0025] Specifically, the positioning assembly is used to clamp the bearing sleeve 100 to be tested. The positioning assembly includes a rotating sleeve 300, which is rotatably mounted on the support plate 201. The rotation axis of the rotating sleeve 300 is perpendicular to the support plate 201. The rotating sleeve 300 is provided with a fixing screw 303 that can move radially along the rotating sleeve 300. One end of the fixing screw 303 extends into the rotating sleeve 300, and the end of the fixing screw 303 extending into the rotating sleeve 300 has a rubber core. The head 304 is hemispherical. After the bearing sleeve 100 is placed into the rotating sleeve 300, the bearing sleeve 100 is fixed in the rotating sleeve 300 by moving the fixing screw 303 so that the rubber head 304 abuts against the bearing sleeve 100. The measuring assembly includes a lifting seat 500 sleeved on the lifting rod 504. The lifting seat 500 can slide along the axial direction of the lifting rod 504. Probes 509 and mounting points are respectively provided on opposite sides of the lifting seat 500. Mounting plate 506, wherein the probe 509 cooperates with the measuring grating 600 and the measuring grating 600 is used to measure the height of the probe 509, the mounting plate 506 is located on the side of the lifting seat 500 near the rotating sleeve 300, the mounting plate 506 is provided with a connecting rod 507 and the connecting rod 507 is vertically movable on the mounting plate 506, the connecting rod 507 is located inside the rotating sleeve 300 and one end of the connecting rod 507 is provided with a contact The ball 508 is attached to the lifting rod 504, and a spring 505 is also fitted on it. The spring 505 abuts against the lifting seat 500. The spring 505 drives the lifting seat 500 to slide along the lifting rod 504 and drives the contact ball 508 to move closer to the rotating sleeve 300. After the positioning assembly clamps the bearing sleeve 100, the position of the lifting seat 500 and the position of the connecting rod 507 are adjusted respectively to make the contact ball 508 in close contact with the inner wall of the bearing sleeve 100.

[0026] In detail, the driving assembly includes a driving component 400 disposed within the base box 200. The driving component 400 is pultrusively connected to the rotating sleeve 300 and is used to drive the rotating sleeve 300 to rotate on the support plate 201, thereby driving the bearing sleeve 100 fixed on the rotating sleeve 300 to rotate. The control component 700 is also disposed within the base box 200. The control component 700 is electrically connected to the driving component 400 and the measuring grating 600, respectively. The control component 700 is used to control the opening and closing of the driving component 400 and to collect the data measured by the measuring grating 600.

[0027] like Figure 1 As shown, when using the crane bearing inner diameter runout detection device provided in this embodiment to detect the bearing inner diameter, firstly, the bearing sleeve 100 to be tested is installed into the rotating sleeve 300, and the fixing screw 303 is moved so that the rubber head 304 abuts against the bearing sleeve 100 to fix the bearing sleeve 100 in the rotating sleeve 300. Then, the lifting seat 500 is moved so that the probe 509 is moved to the position where the measuring grating 600 reads 0. Then, the connecting rod 507 is moved so that the contact ball 508 is in close contact with the inner wall of the bearing sleeve 100. After the clamping of the bearing sleeve 100 and the debugging of the measuring component are completed, the control component 700 is operated to start the drive component 400. The rotating sleeve 300 rotates at least one revolution under the drive component 400. After that, the control component 700 closes the drive component 400. During the process, the bearing sleeve 100 and the rotating sleeve 300 rotate synchronously, and the contact ball 508 remains in contact with the inner wall of the bearing sleeve 100 under the action of the spring 505, so that the contact ball 508 is in close contact with different positions of the inner wall of the bearing sleeve 100. When the inner diameter of the bearing sleeve 100 changes, the bearing sleeve 100 pushes the contact ball 508 to drive the lifting seat 500 to move in the vertical direction. As the lifting seat 500 moves, the probe 509 fixed on the lifting seat 500 moves synchronously. At this time, the height of the probe 509 measured by the measuring grating 600 also changes accordingly. Then, based on the reading of the measuring grating 600 obtained by the control component 700, the change in the height of the probe 509 can reflect the change in the inner diameter of the bearing sleeve 100, so as to intuitively know the runout of the inner diameter of the bearing sleeve 100.

[0028] Please combine Figure 1 and Figure 2To improve the versatility of the crane bearing inner diameter runout detection device, the positioning assembly further includes a mounting sleeve 301. The outer diameter of the mounting sleeve 301 is the same as the inner diameter of the rotating sleeve 300, and the mounting sleeve 301 is detachably connected to the rotating sleeve 300. The mounting sleeve 301 is provided with a clearance hole 305 for the rubber head 304 to pass through. The inner diameter of the mounting sleeve 301 is the same as the outer diameter of the bearing sleeve 100 to be tested, and there are multiple mounting sleeves 301. The inner diameter of each mounting sleeve 301 is different so that each mounting sleeve 301 is used to detect bearing sleeves 100 of different sizes. When clamping the bearing sleeve 100 to be tested, first select the mounting sleeve 301 with a suitable inner diameter, insert the mounting sleeve 301 into the rotating sleeve 300 and fix it on the rotating sleeve 300, then install the bearing sleeve 100 to be tested into the mounting sleeve 301 and adjust the fixing screw 303 so that the rubber head 304 passes through the clearance hole 305 and moves to the position abutting against the bearing sleeve 100, so that the crane bearing inner diameter runout detection equipment can meet the needs of testing bearing sleeves 100 of different sizes.

[0029] Specifically, the outer peripheral wall of the mounting sleeve 301 is provided with a protruding mounting ring 306, and the end face of the rotating sleeve 300 is provided with a plurality of mounting screws 307 at intervals. The mounting ring 306 is provided with insertion holes that are aligned with the mounting screws 307 one by one. The mounting screws 307 are provided with mounting nuts 308 that cooperate with the mounting screws 307. By rotating the mounting nuts 308, the mounting rings 306 are pressed onto the rotating sleeve 300, thereby fixing the mounting sleeve 301 onto the rotating sleeve 300. This ensures that the position of the mounting sleeve 301 on the rotating sleeve 300 remains stable while making the mounting sleeve 301 easy to disassemble. When the insertion holes cooperate with the mounting screws 307, the clearance holes 305 are aligned with the rubber heads 304, so that after the mounting sleeve 301 is assembled onto the rotating sleeve 300, the rubber heads 304 can pass smoothly through the clearance holes 305.

[0030] Preferably, the inner wall of the mounting sleeve 301 is further provided with a protruding positioning ring 309. The positioning ring 309 is located at one end of the mounting sleeve 301 near the support plate. When the bearing sleeve 100 to be tested is installed into the mounting sleeve 301, the end face of the bearing sleeve 100 fits against the positioning ring 309 to position the bearing sleeve 100 in the mounting sleeve 301, which helps to keep the position of the bearing sleeve 100 on the mounting sleeve 301 stable.

[0031] like Figure 1 and Figure 2As shown, the rotating sleeve 300 is provided with a plurality of first threaded sleeves 302. The number of first threaded sleeves 302 is multiple and the plurality of first threaded sleeves 302 are equally spaced along the circumference of the rotating sleeve 300. The number of fixing screws 303 is the same as the number of first threaded sleeves 302, and the fixing screws 303 correspond one-to-one with the first threaded sleeves 302. Rotating the fixing screws 303 can move the fixing screws 303 within the first threaded sleeves 302, thereby controlling the rubber head 304 to move closer to or away from the bearing sleeve 100, making the positioning component easy to operate. Furthermore, the arrangement of multiple fixing screws 303 abutting against the bearing sleeve 100 from different directions can effectively prevent the bearing sleeve 100 from accidentally loosening during the testing process.

[0032] like Figure 1 , Figure 3 and Figure 5 As shown, the support plate 201 is also provided with a mounting groove 502 and a clearance groove 503. The opposite ends of the lifting rod 504 extend into the mounting groove 502 and the clearance groove 503, respectively. The mounting groove 502 is located above the lifting groove 501 and communicates with the lifting groove 501. The end of the spring 505 away from the lifting seat 500 extends into the mounting groove 502 and abuts against the inner wall of the mounting groove 502, so that the position of the spring 505 on the support plate 201 remains stable. The clearance groove 503 is located below the lifting groove 501 and communicates with the lifting groove 501. The outer peripheral wall of the lifting rod 504 near the clearance groove 503 is provided with a threaded groove, and the lifting rod 504 is provided with a disc 510 that cooperates with the threaded groove. The disc 510 is located below the lifting seat 500 and abuts against the side of the lifting seat 500 away from the spring 505. Rotating the disc 510 to make the disc 510 rise along the lifting rod 504 can make the lifting seat 500 rise under the push of the disc 510. Rotating the disc 510 to make the disc 510 fall along the lifting rod 504 can make the lifting seat 500 fall under the push of the spring 505. When the disc 510 moves into the clearance groove 503 and the lifting seat 500 contacts the bottom surface of the lifting groove 501, the spring 505 is in a naturally extended state.

[0033] Optionally, the lifting seat 500 is also provided with a pointer 511, which is located on one side of the lifting seat 500 exposed on the lifting groove 501. The support plate 201 is provided with an indicator groove 512, which is located on the side close to the lifting groove 501. When the lifting seat 500 moves to the point where the pointer 511 is aligned with the indicator groove 512, the height of the probe 509 measured by the measuring grating 600 is 0, so as to facilitate the operation of the disc 510 to adjust the position of the lifting seat 500.

[0034] Please combine Figure 1 , Figure 3 and Figure 4 In this embodiment, the mounting plate 506 is provided with a second threaded sleeve 513, and the outer peripheral wall of the connecting rod 507 is provided with a thread that mates with the second threaded sleeve 513. Rotating the connecting rod 507 allows it to move vertically through the engagement of the thread on the connecting rod 507 with the second threaded sleeve 513. The bracket plate 201 is also provided with a reading ring 515 fitted onto the connecting rod 507. The height of the upper surface of the reading ring 515 is the same as the height of the center of the rotating sleeve 300. The outer peripheral wall of the connecting rod 507 is provided with a scale line 514 that mates with the reading ring 515. The scale line 514 aligned with the upper surface of the reading ring 515 represents the distance between the upper surface of the reading ring 515 and the end of the contact ball 508 away from the connecting rod 507. When the contact ball 508 abuts against the inner wall of the bearing sleeve 100, the scale line 514 is used to indicate the distance between the center of the rotating sleeve 300 and the inner wall of the bearing sleeve 100, that is, the radius R0 of the bearing sleeve 100 at the point where the contact ball 508 abuts against the inner wall of the bearing sleeve 100 in the initial state. When the inner diameter of the bearing sleeve 100 jumps during the detection process, the actual size of the inner diameter of other positions inside the bearing sleeve 100 can be obtained by adding or subtracting the data measured by the measuring grating 600 from R0.

[0035] like Figure 6 , Figure 7 and Figure 8As shown, the measuring grating 600 includes a housing 601 and a transmitter 602 and a receiver 603 disposed within the housing. The housing 601 is fixed to the support plate 201 and has a through slot 604 for the probe 509 to pass through. The transmitter 602 and the receiver 603 are respectively disposed on opposite sides of the through slot 604. The transmitter 602 includes a plurality of optical axes 605 evenly spaced along the vertical direction. The receiver 603 includes a plurality of photosensitive heads 606 evenly spaced along the vertical direction. The probe 509 is aligned with the optical axis 605. After passing through the through slot 604, the probe 509 extends between the transmitter 602 and the receiver 603. When the measuring grating 600 is working, the transmitter 602 emits a parallel grating through the optical axis 605. The photosensitive head 606 is used to receive the light emitted by the optical axis 605. Since the probe 509 blocks the light, the photosensitive head 606 at the position of the probe 509 cannot receive the light. The control component 700 can then obtain the height data of the probe 509.

[0036] Preferably, the measuring grating 600 further includes two rubber sheets 607, both of which are disposed within the through groove 604. The probe 509 passes through the through groove 604 between the two rubber sheets 607 and extends into the housing 601. The sides of the two rubber sheets 607 that are close to each other are alternately provided with protrusions 608 and notches 609, and the protrusion 608 on one rubber sheet 607 engages with the notch 609 on the other rubber sheet 607. The placement of two rubber sheets 607 within the through groove 604 improves the light-shielding properties of the housing 601, preventing external light from entering the housing 601 and adversely affecting the measurement results.

[0037] Please refer to Figure 1 and Figure 2The base box 200 is also provided with a groove 402 that penetrates the base box 200. The drive assembly also includes a shaft 403 that is rotatably disposed in the groove 402 and a transmission gear 404 is sleeved on the shaft 403. The outer peripheral wall of the rotating sleeve 300 is provided with a toothed ring 401 that meshes with the transmission gear 404. The output shaft 406 of the drive member 400 is provided with a drive gear 407 that meshes with the transmission gear 404. The base box 200 is provided with a partition 405. The end of the output shaft 406 of the drive member 400 away from the drive member 400 is rotatably connected to the partition 405. The power output from the driving component 400 drives the drive gear 407 to rotate, which in turn drives the transmission gear 404 to rotate. The transmission gear 404, in conjunction with the gear ring 401, transmits the power output from the driving component 400 to the rotating sleeve 300, driving the rotating sleeve 300 to rotate and ensuring stable operation of the rotating sleeve 300 under the drive of the driving component 400. In this embodiment, the driving component 400 is a motor.

[0038] like Figure 1 , Figure 9 and Figure 10 As shown, the control component 700 includes a PLC controller 701, a control switch 702, a time relay 706, and an A / D converter 707. The PLC controller 701 is disposed inside the base box 200, and the output control terminals of the PLC controller 701 are electrically connected to the drive unit 400, the time relay 706, and the receiver 603, respectively. The control switch 702 is fixed on the outer wall of the base box 200. The PLC controller 701 is electrically connected to an external power supply 705 through the control switch 702. The time relay 706 is electrically connected to the transmitter 602, and the receiver 603 is electrically connected to the A / D converter 707. Operating the control switch 702 can control the control component 700 to be powered on or off. After the control switch 702 is turned on, the drive component 400, the receiver 603 and the time relay 706 are turned on synchronously, and the transmitter 602 runs intermittently under the action of the time relay 706. The data of the height of the probe 509 measured by the receiver 603 can be obtained by outputting the detection data through the A / D converter 707.

[0039] In detail, the crane bearing inner diameter runout detection device also includes a computer 703 and a display screen 704. The computer 703 is electrically connected to the A / D converter 707, and the display screen 704 is connected to the computer 703 via a signal line. The computer 703 processes the data measured by the measuring grating 600. After obtaining the data measured by the measuring grating 600, the computer 703 plots a line graph with time as the horizontal axis and the reading of the measuring grating 600 as the vertical axis. The plotted line graph is displayed on the display screen 704, and the runout of the bearing sleeve 100 inner diameter can be intuitively determined through the line graph.

[0040] Example 2

[0041] like Figure 11 As shown, Embodiment 2 of the present invention proposes a method for detecting the inner diameter runout of a crane bearing, which is based on the crane bearing inner diameter runout detection equipment in Embodiment 1.

[0042] Please refer to Figure 11 The method for detecting the runout of the inner diameter of the crane bearing includes the following steps:

[0043] S1. Place the bearing to be tested into the rotating sleeve, and move the rubber head to make the rubber head abut against the bearing sleeve to fix the bearing sleeve inside the rotating sleeve.

[0044] In step S1, after the bearing sleeve to be tested is placed into the rotating sleeve, the fixing screw is turned to move the fixing screw radially along the rotating sleeve inside the first threaded sleeve and drive the rubber head close to the bearing sleeve until the rubber head abuts against the bearing sleeve. The bearing sleeve is fixed by rotating each fixing screw to make multiple rubber heads abut against the bearing sleeve from different directions.

[0045] Before step S1, step S0 is included: selecting the appropriate mounting sleeve according to the size of the bearing sleeve to be measured, and installing the mounting sleeve into the rotating sleeve. When selecting the mounting sleeve, first determine the outer diameter of the bearing sleeve to be measured, then select a mounting sleeve with an inner diameter equal to the outer diameter of the bearing sleeve. After the mounting sleeve is inserted into the rotating sleeve, the mounting screw on the rotating sleeve is inserted into the insertion hole on the mounting sleeve so that the clearance hole on the mounting sleeve is aligned with the rubber head. Then, tighten the mounting nut on the mounting screw to press the mounting ring on the mounting sleeve onto the rotating sleeve to fix the mounting sleeve. When the bearing sleeve is inserted into the mounting sleeve, moving the bearing sleeve so that the bearing sleeve fits against the positioning ring inside the mounting sleeve can position the bearing sleeve.

[0046] S2. Move the lifting platform to the position where the measurement grating reading is 0.

[0047] In step S2, when adjusting the position of the lifting seat, rotate the disc to make the disc rise along the axial direction of the lifting rod to push the lifting seat up, or rotate the disc to make the disc fall along the lifting rod and the spring pushes the lifting seat down. Move the lifting seat to the position where the pointer is aligned with the indicator slot and the height of the probe measured by the measuring grating is 0 to complete the calibration.

[0048] S3. Move the connecting rod so that the contact ball abuts against the inner wall of the bearing sleeve.

[0049] In step S3, after the position of the lifting seat is adjusted, the connecting rod is rotated to move the connecting rod inside the second threaded sleeve to drive the contact ball to move until it is in close contact with the inner wall of the bearing sleeve.

[0050] Step S3 is followed by step S31: reading the reading R0 of the scale line corresponding to the upper surface of the reading ring and inputting R0 into the computer. After adjusting the lifting seat and connecting rod to their positions, the reading R0 of the scale line corresponding to the upper surface of the reading ring is the radius of the bearing sleeve at the point where it abuts against the inner wall of the bearing sleeve in the initial state of the contact ball. When the inner diameter of the bearing sleeve jumps during the testing process, the actual inner diameter of other positions inside the bearing sleeve can be obtained by adding or subtracting the data measured by the measuring grating from R0.

[0051] Step S31 is followed by step S32, where the disc is rotated to descend along the lifting rod into the clearance groove. After the positions of the lifting seat and the connecting rod are adjusted, the disc is moved away from the lifting seat and into the clearance groove, allowing the lifting seat to rise and fall freely along the lifting rod as the inner diameter of the bearing sleeve changes. This prevents the disc from obstructing the movement of the lifting seat and causing inaccurate test data.

[0052] S4. The control component starts the drive to drive the rotating sleeve to rotate. After the bearing housing rotates at least one revolution, the control component controls the drive to shut off. During the rotation of the rotating sleeve, the control component acquires the reading of the measuring grating. The runout of the inner diameter of the bearing sleeve can be determined based on the change in the reading of the measuring grating.

[0053] In step S4, the control switch is first activated to turn on the PLC controller. The PLC controller controls the drive unit, time relay, and receiver to work synchronously. When the drive unit is activated, its output shaft drives the drive gear to rotate. The drive gear drives the transmission gear meshing with the drive gear to rotate, and the transmission gear then drives the gear ring meshing with the transmission gear to rotate, thereby driving the rotating sleeve, mounting sleeve, and bearing sleeve to rotate synchronously. During the rotation of the bearing sleeve, the contact ball remains in close contact with the inner wall of the bearing sleeve under the elastic force provided by the spring. When the inner diameter of the bearing sleeve changes, the contact ball rises and falls vertically with the change in the inner diameter of the bearing sleeve, and drives the lifting seat and probe to rise and fall synchronously. Under the action of the time relay, the transmitter operates intermittently. When the transmitter is working, the optical axis emits a parallel grating, and the photosensitive head receives the light emitted by the optical axis. However, because the probe blocks the light propagation, the photosensitive head at the corresponding probe position cannot receive the light emitted by the optical axis. Thus, the receiver measures the height of the probe, and the change in the height of the probe indicates the runout of the inner diameter of the bearing sleeve. After the bearing sleeve has rotated at least one revolution, the control switch is turned off.

[0054] Following step S4, step S41 is also included: the receiver inputs the reading of the measuring grating into the computer via an A / D converter. The computer plots a line graph with time on the x-axis and the measuring grating reading on the y-axis and displays it on the screen. After receiving the measuring grating reading, the computer can plot a line graph of the bearing sleeve inner diameter runout based on the data measured by the measuring grating. The line graph can visually show the runout of the bearing sleeve inner diameter. When it is necessary to obtain the actual size of the inner diameter of a specific position of the bearing sleeve, the reading of the grating when the contact ball contacts that position is added to R0.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A crane bearing inner diameter runout condition detection apparatus, characterized by: The utility model relates to a height measuring device, including, Bottom box; Support plate, vertical setting is in the bottom box, is equipped with lifting groove on it and is equipped with lifting rod in the lifting groove, and the axial direction of lifting rod is vertical direction; Positioning assembly, including rotatable setting on the support plate on the sleeve, the sleeve is equipped with fixed screw that can move along the radial direction of sleeve, and the one end of fixed screw that stretches into the sleeve has rubber head; Driving assembly, including the driving piece that sets up in the bottom box, the driving piece is connected with the sleeve transmission and drives the sleeve to rotate on the support plate; Measuring assembly, including the lifting seat that sets up on the lifting rod and the lifting seat can slide along the lifting rod, the opposite sides of lifting seat are equipped with probe and mounting plate respectively, the mounting plate is equipped with the connecting rod that can lift along the vertical direction and the connecting rod is located in the sleeve, one end of connecting rod is equipped with contact ball, the spring that sets up with lifting seat abuts on the lifting rod, the spring drives contact ball to move to the direction that is close to the inner wall of sleeve, Measuring grating, fixed on the support plate and matched with the probe, for measuring the height where the probe is located; Control assembly, set up in the bottom box, respectively with the driving piece and the measuring grating electric connection.

2. A crane bearing inner diameter runout condition detection apparatus as claimed in claim 1, characterized in that: The positioning assembly further includes an installation sleeve detachably connected with the sleeve, the outer diameter of the installation sleeve is consistent with the inner diameter of the sleeve, and the installation sleeve is provided with an avoiding hole for the fixed screw and the rubber head to pass through.

3. A crane bearing inner diameter runout condition detection apparatus as claimed in claim 1, characterized in that: The sleeve is provided with a first threaded sleeve matched with the fixed screw, the number of the first threaded sleeves is multiple, and the multiple first threaded sleeves are equally spaced along the circumference of the sleeve, the number of the fixed screws is consistent with the number of the first threaded sleeves and matched with the first threaded sleeves one by one.

4. A crane bearing inner diameter runout condition detection apparatus as claimed in claim 1, characterized in that: The bottom box is provided with a groove body penetrating through the bottom box, the groove body is provided with a rotatable shaft, the shaft is provided with a transmission gear, the outer circumferential wall of the sleeve is provided with a gear ring engaged with the transmission gear, and the output shaft of the driving member is provided with a driving gear engaged with the transmission gear.

5. A crane bearing inner diameter runout condition detection apparatus as claimed in claim 1, characterized in that: The outer circumferential wall of the lifting rod is provided with a threaded groove, and the lifting rod is provided with a disc matched with the threaded groove, and the disc is located below the lifting seat.

6. A crane bearing inner race run-out condition detection apparatus as claimed in claim 5, characterised in that: The lifting seat is provided with a pointer, the support plate is provided with an indicating groove, and the indicating groove is located on the side close to the lifting groove, when the pointer is aligned with the indicating groove, the height of the probe measured by the measuring grating is 0.

7. A crane bearing inner diameter runout condition detection apparatus as claimed in claim 1, characterized in that: The mounting plate is provided with a second threaded sleeve, the outer circumferential wall of the connecting rod is provided with a thread matched with the second threaded sleeve, the support plate is further provided with a reading ring sleeved on the connecting rod, and the connecting rod is provided with a scale line matched with the reading ring, the height of the upper surface of the reading ring is consistent with the height of the center of the sleeve, and the scale line aligned with the upper surface of the reading ring is the distance between the upper surface of the reading ring and the end of the contact ball away from the connecting rod.

8. A crane bearing inner race runout condition detection apparatus as claimed in claim 1, characterized in that: The measuring grating comprises a shell, an emitter and a receiver, the shell is fixed on the support plate and a through slot is arranged on the shell for the probe to pass through, the emitter and the receiver are arranged on opposite sides of the through slot respectively, the emitter comprises a plurality of optical axes arranged at equal intervals in the vertical direction, and the receiver comprises a plurality of light receiving heads which are aligned with the optical axes one by one.

9. A crane bearing inner race run-out condition detection apparatus as claimed in claim 8, characterised in that: Two rubber sheets are arranged in the through slot, and the probe passes through the through slot between the two rubber sheets, the mutually close surfaces of the two rubber sheets are alternately provided with protrusions and notches respectively, and the protrusions on one of the rubber sheets are engaged with the notches on the other rubber sheet.

10. A method for detecting the runout of the inner diameter of a crane bearing, characterized in that: The crane bearing inner diameter runout condition detection device according to any one of claims 1-9, comprising the steps of S1, fitting the bearing sleeve to be measured into the rotating sleeve, moving the rubber head to abut the rubber head with the bearing sleeve to fix the bearing sleeve in the rotating sleeve; S2, moving the lifting seat to move the probe to a position where the measuring grating reading is 0; S3, moving the connecting rod to abut the contact ball with the inner wall of the bearing sleeve; S4, the control assembly starts the driving member to drive the rotating sleeve to rotate, and after the bearing seat rotates at least one round, the control assembly controls the driving member to close, the control assembly obtains the reading of the measuring grating during the rotating process of the rotating sleeve, and the runout condition of the inner diameter of the bearing sleeve can be obtained according to the change of the reading of the measuring grating.

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