Bearing clearance detection device

Abstract

The invention relates to the field of bearing detection, and particularly discloses a bearing clearance detection device which comprises a base, a working table arranged on the upper side of the base, four stand columns fixed between the base and the working table, a vertical plate fixed on the upper end face of the working table, a dial indicator arranged on the vertical plate, and five clamping structures arranged on the front side of the vertical plate and used for clamping an inner ring and an outer ring of a bearing. Wherein the three clamping structures are evenly distributed in the circumferential direction and contract inwards or expand outwards through the moving assembly, the three clamping structures installed on the moving assembly are driven by the moving assembly to expand outwards so as to tightly support the inner ring of the bearing, and therefore the bearing is fixed to the detection device, and the detection end of the dial indicator abuts against the outer ring of the bearing. Then the two clamping structures installed on the lifting assembly ascend along with the lifting assembly and lift the bearing outer ring upwards, the radial clearance of the bearing ring can be obtained through the numerical value on the dial indicator, and the radial clearance of the bearing in all directions can be obtained by rotating the bearing outer ring and penetrating through the numerical value change on the dial indicator.

Description

Technical Field

[0001] The invention relates to the field of bearing detection, in particular to a bearing clearance detection device. Background Art

[0002] The bearing clearance is the amount of movement when the inner ring or outer ring of the bearing is fixed when it is not installed on the shaft or bearing box, and then the unfixed side moves radially or axially. According to the direction of movement, it can be divided into radial clearance and axial clearance. When detecting radial clearance, it is necessary to fix the inner ring of the bearing, and then squeeze the outer ring of the bearing, and use the micrometer to detect the displacement of the outer ring of the bearing, so as to know the radial clearance of the bearing. Due to the traditional detection method, only the radial clearance of the bearing in one direction can be detected at a time. If the radial clearance in other directions needs to be detected, the pressing position and the detection position need to be changed, which leads to cumbersome detection steps and low detection efficiency. Summary of the invention

[0003] The object of the present invention is to provide a bearing clearance detection device for overcoming the above-mentioned defects in the prior art.

[0004] The bearing clearance detection device according to the present invention comprises a base, a workbench is arranged on the upper side of the base, four columns are fixed between the base and the workbench, a vertical plate is fixed on the upper end surface of the workbench, a micrometer is arranged on the vertical plate, five clamping structures for clamping the inner ring and outer ring of the bearing are arranged on the front side of the vertical plate, three of the clamping structures are evenly distributed in the circumference and are contracted inwardly or expanded outwardly by the moving assembly, and the three clamping structures are used to tighten the inner ring of the bearing when expanding outward, and the remaining two clamping structures are arranged on the lower side of the moving assembly and are vertically moved by the lifting assembly to lift the outer ring of the bearing upward; The clamping structure includes a central shaft, a supporting sleeve, a limiting ring and a clamping ring, the supporting sleeve is fixed on the outer periphery of the central shaft, the limiting ring is fixed on the rear end of the supporting sleeve, the clamping ring is slidably connected to the supporting sleeve, the front end of the central shaft is threadedly connected with a threaded sleeve, the rear end surface of the threaded sleeve is fixedly provided with a connecting ring, the rear side of the threaded sleeve is provided with a spring seat, the central shaft passes through the spring seat, the front end surface of the spring seat is provided with a connecting groove, the connecting ring is embedded in the connecting groove and is rotatably connected to the connecting groove, and a spring is fixed between the spring seat and the clamping ring.

[0005] Through the above technical solution, the three clamping structures installed on the moving component expand outward under the drive of the moving component to tighten the inner ring of the bearing, thereby fixing the bearing on the detection device, and the detection end of the micrometer abuts against the outer ring of the bearing, and then the two clamping structures installed on the lifting component rise with the lifting component and lift the outer ring of the bearing upward. The radial clearance of the bearing ring can be obtained through the value on the micrometer, and the outer ring of the bearing is rotated, and the radial clearance of the bearing in all directions can be obtained through the change of the value on the micrometer.

[0006] In the above technical solution, the movable component includes a mounting seat and three first sliders. Three guide grooves extending front to back are provided in the mounting seat. The guide grooves are parallel to the moving direction of the clamping structure used to tighten the inner ring of the bearing. A limiting block is slidably connected in the guide grooves. The side walls of the guide grooves parallel to the sliding direction of the limiting block are provided with limiting grooves. A first slider slidably connected to the limiting groove is fixed on the side of the limiting block. The central axes of the three clamping structures evenly distributed circumferentially are respectively fixed on the front end surfaces of the three limiting blocks.

[0007] Through the above technical solution, the three clamping structures installed on the moving assembly can slide in the guide groove along with the first slider, and the setting of the limit block restricts the first slider in the guide groove to ensure the sliding stability of the first slider.

[0008] In the above technical solution, the rear end face of the limit block is fixed with a connecting plate by bolts, the rear end face of the connecting plate is fixed with a movable plate perpendicular to the connecting plate, the rear end face of the mounting seat is fixed with three circumferentially distributed shaft seats, the rear end face of the mounting seat is also fixed with a box body located at the center of the mounting seat, a gear cavity is opened in the box body, a screw rod is threadedly connected to the movable plate, one end of the screw rod is rotatably connected to the shaft seat, and the other end extends into the gear cavity.

[0009] Through the above technical solution, the first sliding block can be made to slide along the guide groove by rotating the screw rod.

[0010] In the above technical solution, a driven gear is fixed to one end of the screw rod located in the gear cavity, a motor is fixed to the rear end face of the housing, the output shaft of the motor extends into the gear cavity, and a driving gear is fixed to the end thereof that meshes with the three driven gears at the same time.

[0011] Through the above technical solution, the second motor drives the driving gear to rotate, which can make the three driven gears rotate at the same time, and then make the three screw rods rotate at the same time, so that the three first sliders expand outward or contract inward at the same time, thereby ensuring the accurate positioning of the inner ring of the bearing.

[0012] In the above technical solution, threaded rods fixed on the rear end surface of the mounting seat are provided on both sides of the shaft seat, and connecting holes corresponding to the threaded rods are opened on the vertical plate. The threaded rods pass through the connecting holes, and nuts are threadedly connected to the threaded rods and abut against the rear end surface of the vertical plate, and the shaft seat abuts against the front end surface of the mounting seat.

[0013] The above technical solution facilitates the disassembly and assembly of the movable assembly and the vertical plate, and facilitates the maintenance of the movable assembly.

[0014] In the above technical scheme, the lifting assembly includes a lifting plate, two second sliders, two first clamping plates and two sleeves, the vertical plate is provided with two symmetrical through grooves, the second slider is slidably connected in the through grooves, the first clamping plate is fixedly arranged on the front end face of the second slider, the rear end face of the second slider is fixed with the second clamping plate by bolts, the second clamping plate abuts against the rear end face of the vertical plate, a fixing plate is provided on the rear side of one of the second clamping plates, four connecting rods are fixed between the second clamping plate and the fixing plate, a first motor is fixed on the rear end face of the fixing plate, two central shafts located on the lower side of the moving assembly penetrate the first clamping plate, the second slider and the second clamping plate and are rotatably connected to the three, and one of the central shafts is fixedly connected to the output shaft of the first motor.

[0015] Through the above technical solution, the first motor can drive one of the central shafts to rotate, thereby driving the outer ring of the bearing to rotate, so that the radial clearance of the bearing in all directions can be detected.

[0016] The sleeve is fixed to the front end surface of the first clamping plate, and the two central axes located at the lower side of the moving component pass through the two sleeves respectively. The lifting plate is fixed between the two sleeves. A cylinder is fixed to the lower end surface of the workbench, and the upper end of the telescopic rod of the cylinder is fixed to the lower end surface of the lifting plate.

[0017] Through the above technical solution, the cylinder can drive the lifting plate to move up and down, thereby driving the two clamping structures installed on the lifting assembly to move up and down.

[0018] In the above technical solution, a mounting rod is fixed to the upper end surface of the vertical plate, a jacket is provided on the mounting rod, the jacket is fixed to the mounting rod by bolts, and the micrometer is located on the front side of the vertical plate and fixed to the jacket.

[0019] Through the above technical solution, the height of the micrometer can be adjusted, so that the clearance of bearings with different diameters can be detected.

[0020] The beneficial effects of the present invention are as follows: the three clamping structures installed on the moving component expand outwards under the drive of the moving component to tighten the inner ring of the bearing, thereby fixing the bearing on the detection device, and the detection end of the micrometer abuts against the outer ring of the bearing, and then the two clamping structures installed on the lifting component rise with the lifting component and lift the outer ring of the bearing upward, and the radial clearance of the bearing ring can be obtained through the value on the micrometer, and the outer ring of the bearing is rotated, and the radial clearance of the bearing in all directions can be obtained through the change of the value on the micrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the working state of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3is an exploded view of the present invention; Figure 4 The present invention Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 It is a structural schematic diagram of the fixing plate in the present invention; Figure 6 It is a structural schematic diagram of the clamping structure in the present invention; Figure 7 is an exploded view of the clamping structure of the present invention; Figure 8 It is a structural schematic diagram of the threaded sleeve in the present invention; Fig. 9 It is a structural schematic diagram of the mobile component in the present invention; Fig.10 It is a cross-sectional schematic diagram of the mobile component in the present invention.

[0022] In the figure: 2. Clamping structure; 3. Moving assembly; 10. Base; 11. Column; 12. Workbench; 13. Vertical plate; 131. Through slot; 132. Connecting hole; 14. Mounting rod; 20. Support sleeve; 21. Limiting ring; 22. Clamping ring; 23. Spring; 24. Spring seat; 241. Connecting slot; 25. Threaded sleeve; 26. Center shaft; 27. Connecting ring; 30. Mounting seat; 301. Guide slot; 302. Limiting slot; 31. Threaded rod; 32 , nut; 33, first slider; 34, limit block; 35, connecting plate; 36, box body; 361, gear chamber; 37, screw rod; 38, shaft seat; 39, moving plate; 40, micrometer; 41, jacket; 50, second slider; 51, first clamping plate; 52, sleeve; 53, lifting plate; 54, first motor; 55, second clamping plate; 56, fixed plate; 57, connecting rod; 60, second motor; 61, driving gear; 62, driven gear. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of simplifying the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of the bearing clearance detection device are described in detail below: An embodiment of the present invention: Reference Figure 1-Figure 10 The present invention provides a bearing clearance detection device, including a base 10, a workbench 12 is arranged on the upper side of the base 10, four columns 11 are fixed between the base 10 and the workbench 12, a vertical plate 13 is fixed on the upper end surface of the workbench 12, and a micrometer 40 is arranged on the vertical plate 13. Five clamping structures for clamping the inner ring and outer ring of the bearing are arranged on the front side of the vertical plate 13, among which three clamping structures 2 are evenly distributed in the circumferential direction and contract inwardly or expand outwardly through the moving component 3. When the three clamping structures 2 expand outwardly, they are used to tighten the inner ring of the bearing, and the remaining two clamping structures 2 are arranged on the lower side of the moving component and are vertically moved by the lifting component to lift the outer ring of the bearing upward; The clamping structure 2 includes a central shaft 26, a support sleeve 20, a limiting ring 21 and a clamping ring 22. The support sleeve 20 is fixed on the outer periphery of the central shaft 26, the limiting ring 21 is fixed on the rear end of the support sleeve 20, and the clamping ring 22 is slidably connected to the support sleeve 20. The front end of the central shaft 26 is threadedly connected with a threaded sleeve 25, and a connecting ring 27 is fixedly provided on the rear end surface of the threaded sleeve 25. A spring seat 24 is provided on the rear side of the threaded sleeve 25. The central shaft 26 passes through the spring seat 24. A connecting groove 241 is provided on the front end surface of the spring seat 24. The connecting ring 27 is embedded in the connecting groove 241 and is rotatably connected to the connecting groove 241. A spring 23 is fixed between the spring seat 24 and the clamping ring 22.

[0025] Reference Figure 3 , Figure 7 , Fig. 9 The moving component 3 includes a mounting seat 30 and three first sliders 33. Three guide grooves 301 extending front to back are provided in the mounting seat 30. The guide grooves 301 are parallel to the moving direction of the clamping structure 2 for tightening the inner ring of the bearing. A limiting block 34 is slidably connected in the guide grooves 301. A limiting groove 302 is provided on the side wall of the guide groove 301 parallel to the sliding direction of the limiting block 34. A first slider 33 slidably connected to the limiting groove 302 is fixed on the side of the limiting block 34. The central axes 26 in the three clamping structures 2 evenly distributed circumferentially are fixed on the front end surfaces of the three limiting blocks 34 respectively.

[0026] Reference Figure 7 , Fig. 9 , Fig.10The rear end face of the limit block 34 is fixed with a connecting plate 35 by bolts, and the rear end face of the connecting plate 35 is fixed with a moving plate 39 perpendicular to the connecting plate 35. The rear end face of the mounting seat 30 is fixed with three circumferentially distributed shaft seats 38. The rear end face of the mounting seat 30 is also fixed with a box body 36 located at the center of the mounting seat 30. A gear cavity 361 is opened in the box body 36. A screw rod 37 is threadedly connected to the movable plate 39. One end of the screw rod 37 is rotatably connected to the shaft seat 38, and the other end extends into the gear cavity 361. A driven gear 62 is fixed to one end of the screw rod 37 located in the gear cavity 361. A motor is fixed to the rear end face of the box body 36. The output shaft of the motor extends into the gear cavity 361, and a driving gear 61 that meshes with the three driven gears 62 at the same time is fixed at its end.

[0027] Reference Figure 3 , Figure 4 , Fig. 9 , threaded rods 31 fixed to the rear end surface of the mounting seat 30 are provided on both sides of the shaft seat 38, and a connecting hole 132 corresponding to the threaded rod 31 is opened on the vertical plate 13. The threaded rod 31 passes through the connecting hole 132. A nut 32 abutting against the rear end surface of the vertical plate 13 is threadedly connected to the threaded rod 31, and the shaft seat 38 abuts against the front end surface of the mounting seat 30.

[0028] Reference Figure 3 , Figure 4 , Figure 5 , Figure 7 The lifting assembly includes a lifting plate 53, two second sliders 50, two first clamping plates 51 and two sleeves 52. Two symmetrically arranged through grooves 131 are provided on the vertical plate 13. The second slider 50 is slidably connected in the through grooves 131. The first clamping plate 51 is fixed to the front end surface of the second slider 50. The rear end surface of the second slider 50 is fixed with a second clamping plate 55 by bolts. The second clamping plate 55 abuts against the rear end surface of the vertical plate 13. A fixing plate 56 is provided on the rear side of one of the second clamping plates 55. Four connecting rods 57 are fixed between the second clamping plate 55 and the fixing plate 56. A first motor 54 is fixed to the rear end surface of the fixing plate 56. The two central shafts 26 located at the lower side of the moving assembly 3 pass through the first clamping plate 51, the second slider 50 and the second clamping plate 55 and are rotatably connected to the three. One of the central shafts 26 is fixedly connected to the output shaft of the first motor 54.

[0029] Reference Figure 3 , Figure 4 The sleeve 52 is fixed to the front end surface of the first clamping plate 51, the two central axes 26 located at the lower side of the moving component 3 respectively penetrate the two sleeves 52, the lifting plate 53 is fixed between the two sleeves 52, and a cylinder is fixed to the lower end surface of the workbench 12, and the upper end of the telescopic rod of the cylinder is fixed to the lower end surface of the lifting plate 53.

[0030] Reference Figure 3A mounting rod 14 is fixed to the upper end surface of the vertical plate 13 , and a jacket 41 is sleeved on the mounting rod 14 . The jacket 41 is fixed to the mounting rod 14 by bolts. The micrometer 40 is located at the front side of the vertical plate 13 and fixed to the jacket 41 .

[0031] When the present invention is in use, the inner ring of the bearing is sleeved on the three clamping structures 2 installed on the moving component 3. After the second motor 60 is started, the driving gear 61 rotates accordingly, thereby driving the three driven gears 62 to rotate simultaneously, and then the three screw rods 37 rotate simultaneously, then the three moving plates 39 move simultaneously to the side away from the second motor 60, and the connecting plate 35 moves accordingly, thereby driving the limit block 34 to move outward along the guide groove 301, so that the support sleeve 20 on the corresponding side moves outward until it abuts against the inner ring of the bearing.

[0032] Then, the rotating threaded sleeve 25 on the clamping mechanism 2 installed on the moving assembly 3 moves the spring seat 24 toward the limit block 34, so that the clamping ring 22 abuts against the end face of the inner ring of the bearing, thereby clamping the inner ring of the bearing and compressing the spring 23.

[0033] At this time, adjust the height of the micrometer 40 so that the detection end of the micrometer 40 abuts against the highest point of the outer ring of the bearing, and adjust the pointer on the micrometer 40 to point to "0".

[0034] Then, the cylinder is started, and the telescopic rod is extended upward, thereby driving the lifting plate 53 to move, so that the clamping structure 2 on the corresponding side moves upward, and the support sleeve 20 and the outer ring of the bearing on the clamping structure 2 are lifted upward, throughout the value change on the micrometer 40, until the value on the micrometer 40 no longer changes, and then the cylinder is closed, and the value on the micrometer 40 is the radial clearance of the bearing.

[0035] After rotating the threaded sleeve 25, the clamping ring 22 and the limit ring 21 clamp the outer ring of the bearing, and at the same time start the first motor 54, thereby driving the central shaft 26 to rotate, and then the support sleeve 20 rotates, thereby driving the outer ring of the bearing to rotate, and the micrometer 40 can detect the radial clearance of the bearing in different directions.

[0036] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A bearing clearance detection device, comprising a base (10), a workbench (12) being arranged on the upper side of the base (10), four columns (11) being fixed between the base (10) and the workbench (12), characterized in that: A vertical plate (13) is fixed to the upper end surface of the workbench (12), and a micrometer (40) is arranged on the vertical plate (13). Five clamping structures for clamping the inner ring and outer ring of the bearing are arranged on the front side of the vertical plate (13), wherein three of the clamping structures 2 are evenly distributed in the circumferential direction and are contracted inwardly or expanded outwardly through the moving component 3. When the three clamping structures 2 are expanded outwardly, they are used to support the inner ring of the bearing, and the remaining two clamping structures 2 are arranged at the lower side of the moving component and are vertically moved by the lifting component to lift the outer ring of the bearing upward; The clamping structure 2 comprises a central shaft (26), a support sleeve (20), a limiting ring (21) and a clamping ring (22); the support sleeve (20) is fixed on the outer periphery of the central shaft (26); the limiting ring (21) is fixed on the rear end of the support sleeve (20); the clamping ring (22) is slidably connected to the support sleeve (20); a threaded sleeve (25) is threadedly connected to the front end of the central shaft (26); a connecting ring (27) is fixedly provided on the rear end surface of the threaded sleeve (25); a spring seat (24) is provided on the rear side of the threaded sleeve (25); the central shaft (26) passes through the spring seat (24); a connecting groove 241 is provided on the front end surface of the spring seat (24); the connecting ring (27) is embedded in the connecting groove (241) and is rotatably connected to the connecting groove (241); a spring (23) is fixed between the spring seat (24) and the clamping ring (22).

2. The bearing clearance detection device according to claim 1, characterized in that: The moving assembly 3 comprises a mounting seat (30) and three first sliding blocks (33). The mounting seat (30) is provided with three guide grooves (301) extending forward and backward. The guide grooves (301) are parallel to the moving direction of the clamping structure 2 for tightening the inner ring of the bearing. A limiting block (34) is slidably connected in the guide grooves (301). A limiting groove (302) is provided on the side wall of the guide groove (301) parallel to the sliding direction of the limiting block (34). A first sliding block (33) slidably connected to the limiting groove (302) is fixed on the side surface of the limiting block (34). The central axes (26) of the three clamping structures 2 evenly distributed in the circumferential direction are respectively fixed to the front end surfaces of the three limiting blocks (34).

3. The bearing clearance detection device according to claim 2, characterized in that: A connecting plate (35) is fixed to the rear end surface of the limit block (34) by means of bolts, a movable plate (39) perpendicular to the connecting plate (35) is fixedly provided on the rear end surface of the connecting plate (35), three circumferentially distributed shaft seats (38) are fixedly provided on the rear end surface of the mounting seat (30), a box body (36) located at the center of the mounting seat (30) is also fixedly provided on the rear end surface of the mounting seat (30), a gear cavity (361) is provided in the box body (36), a screw rod (37) is internally threadedly connected to the movable plate (39), one end of the screw rod (37) is rotatably connected to the shaft seat (38), and the other end extends into the gear cavity (361).

4. The bearing clearance detection device according to claim 3 is characterized in that: A driven gear (62) is fixed to one end of the screw rod (37) located in the gear cavity (361), and a motor is fixed to the rear end surface of the housing (36). The output shaft of the motor extends into the gear cavity (361), and a driving gear (61) that meshes with the three driven gears (62) is fixed to the end of the motor.

5. The bearing clearance detection device according to claim 3, characterized in that: Threaded rods (31) fixed to the rear end surface of the mounting seat (30) are provided on both sides of the shaft seat (38); a connecting hole (132) corresponding to the threaded rod (31) is opened on the vertical plate (13); the threaded rod (31) passes through the connecting hole (132); a nut (32) abutting against the rear end surface of the vertical plate (13) is threadedly connected to the threaded rod (31); and the shaft seat (38) abuts against the front end surface of the mounting seat (30).

6. The bearing clearance detection device according to claim 1, characterized in that: The lifting assembly comprises a lifting plate (53), two second sliders (50), two first clamping plates (51) and two sleeves (52); the vertical plate (13) is provided with two symmetrically arranged through grooves (131); the second sliders (50) are slidably connected in the through grooves (131); the first clamping plates (51) are fixed to the front end surfaces of the second sliders (50); the rear end surfaces of the second sliders (50) are fixed with the second clamping plates (55) by bolts; the second clamping plates (55) and the rear end surfaces of the vertical plate (13) are connected to each other. Abutting, a fixed plate (56) is arranged on the rear side of one of the second clamping plates (55), four connecting rods (57) are fixed between the second clamping plate (55) and the fixed plate (56), a first motor (54) is fixed to the rear end face of the fixed plate (56), two central shafts (26) located at the lower side of the moving component 3 pass through the first clamping plate (51), the second slider (50) and the second clamping plate (55) and are rotatably connected to the three, one of the central shafts (26) is fixedly connected to the output shaft of the first motor (54).

7. The bearing clearance detection device according to claim 6, characterized in that: The sleeve (52) is fixed to the front end surface of the first clamping plate (51), and the two central axes (26) located at the lower side of the moving component 3 respectively penetrate the two sleeves (52). The lifting plate (53) is fixed between the two sleeves (52). A cylinder is fixed to the lower end surface of the workbench (12), and the upper end of the telescopic rod of the cylinder is fixed to the lower end surface of the lifting plate (53).

8. The bearing clearance detection device according to claim 1, characterized in that: A mounting rod (14) is fixed to the upper end surface of the vertical plate (13); a jacket (41) is sleeved on the mounting rod (14); the jacket (41) is fixed to the mounting rod (14) by bolts; and the micrometer (40) is located on the front side of the vertical plate (13) and fixed to the jacket (41).

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