Bearing radial clearance detection mechanism

Abstract

The utility model discloses a bearing radial clearance detection mechanism, relates to the technical field of bearing detection, and solves the technical problems that a bearing inner ring is lack of axial positioning, the position of the bearing inner ring is easy to deviate, and the bearing radial clearance detection precision is influenced. Comprising a bottom plate and a vertical plate vertically installed on the bottom plate, a transverse channel is formed in the vertical plate in a penetrating mode, two symmetrically-arranged arc-shaped columns are movably arranged in the transverse channel, the two arc-shaped columns are jointly sleeved with a bearing body, a movable plate is arranged at the top of the vertical plate, and a linear displacement sensor located over the bearing body is installed on the movable plate; an arc-shaped supporting plate is arranged under the bearing body, and a lifting piece is installed between the arc-shaped supporting plate and the bottom plate. According to the utility model, the bearing inner ring can be conveniently pressed against and positioned, and the bearing inner ring cannot axially displace, so that the positioning stability of the bearing inner ring is greatly improved, and the detection precision of the radial clearance of the bearing can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing detection, in particular to a bearing radial clearance detection mechanism. Background Art

[0002] The radial clearance of a bearing refers to the amount of movement when one of the inner or outer rings of the bearing is fixed and the unfixed side is moved radially when the bearing is not installed on the shaft or bearing box. The size of the clearance during operation (called working clearance) affects the rolling fatigue life, temperature rise, noise, vibration and other performance of the bearing.

[0003] A Chinese patent with the authorization number CN214276870U discloses a bearing radial clearance measuring device. After the bearing sleeve is set on the measuring shaft, the positioning cylinder drives the positioning rod to slide, so that the positioning rod contacts the inner ring of the bearing to position the inner ring of the bearing. At this time, the piston rod of the driving cylinder contracts, so that the detection frame slides down under its own gravity, and the outer ring of the bearing is pushed to the lowest point by the detection rod. The detector records the position of the detection rod at this time, and then the contact cylinder works to drive the contact block to move up and push the outer ring of the bearing to the highest point. The detection rod is displaced during the upward movement of the bearing, and the detector detects the displacement at this time and displays it. The displacement is the radial clearance of the bearing. However, this solution still has the following defects:

[0004] Although the positioning cylinder drives the positioning rod to position the inner ring of the bearing, this positioning can only limit the radial movement of the inner ring. The axial direction of the inner ring of the bearing still lacks positioning. When the outer ring of the bearing is subsequently pushed for radial clearance detection, the inner ring of the bearing is displaced due to lack of axial positioning, which can easily affect the detection result of the radial clearance of the bearing. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a bearing radial clearance detection mechanism, which solves the problem that the inner ring of the bearing lacks axial positioning, which easily causes the position of the inner ring of the bearing to shift, thereby affecting the detection accuracy of the radial clearance of the bearing.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a bearing radial clearance detection mechanism is proposed, including a base plate and a vertical plate vertically installed on the base plate, the vertical plate is penetrated by a transverse channel, two symmetrically arranged arc columns are movably arranged in the transverse channel, and a bearing body is jointly sleeved on the two arc columns, a movable plate is provided on the top of the vertical plate, a linear displacement sensor located directly above the bearing body is installed on the movable plate, an arc-shaped support plate is provided directly below the bearing body, a lifting member is installed between the arc-shaped support plate and the base plate, a cross beam of a hollow structure is provided on the side of the vertical plate away from the bearing body, a distance adjustment mechanism is installed between the cross beam and the vertical plate, one end of the arc column is connected to a moving column extending into the cross beam, two kinds of screw rods with opposite threads are rotatably installed in the cross beam, and the screw rods are threadedly connected to the moving column, and a protrusion is installed on the arc side wall of the arc column away from the moving column.

[0007] As a further technical solution of the utility model, the movable plate is a hollow structure with an opening at the bottom, the movable plate is sleeved on the vertical plate, and a locking knob for pressing against the vertical plate is threadedly mounted on the movable plate.

[0008] As a further technical solution of the utility model, the inner cross section of the movable plate is the same as the cross section of the vertical plate.

[0009] As a further technical solution of the utility model, a through groove for inserting the movable column is opened on one side of the crossbeam close to the vertical plate, and the through groove is arranged along the length direction of the crossbeam. A first knob coaxially connected to the screw rod is provided on the outer side of the crossbeam.

[0010] As a further technical solution of the utility model, the distance adjustment mechanism includes a guide sleeve symmetrically installed at the bottom of the beam, a guide rod passing through the guide sleeve is symmetrically installed on one side of the vertical plate close to the beam, and the guide sleeve is slidably connected to the guide rod, a threaded block is installed at the middle position of the bottom of the beam, a screw rod is rotatably installed on the side wall of the vertical plate, and a second knob is provided at the end of the screw rod, and the threaded block is threadedly connected to the screw rod.

[0011] As a further technical solution of the utility model, the lifting member includes a cylinder, and the piston rod of the cylinder is connected to the arc-shaped supporting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, by rotating the screw rod in the crossbeam, it is convenient to control the two arc columns to move toward or away from each other along the transverse channel, so that the inner ring of the bearing body to be tested can be easily positioned by abutment. The distance between the crossbeam and the vertical plate can be easily adjusted by using the distance adjustment mechanism, so that the crossbeam can pull the arc column to move in the direction perpendicular to the vertical plate during the displacement process, and cooperate with the convex block to facilitate the abutment of the edge of the inner ring of the bearing body, so that the inner ring of the bearing body will not be offset in the axial position, thereby achieving comprehensive positioning.

[0014] 2. In the utility model, the movable plate is conveniently controlled to slide along the vertical plate by loosening the locking knob, and the movable plate is pressed down to drive the linear displacement sensor to move downward, so that the detection end of the linear displacement sensor can push the outer ring of the bearing body to the lowest point, read the data at this time, and use the lifting member to drive the arc-shaped support plate to rise, so as to push the outer ring of the bearing body to the highest point, read the displayed value of the linear displacement sensor, and calculate the difference between the latter data and the former data to obtain the radial clearance of the bearing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a bearing radial clearance detection mechanism of the utility model;

[0016] Figure 2 This is a front view of a bearing radial clearance detection mechanism of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the connection part between the arc column and the moving column in a bearing radial clearance detection mechanism of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the internal structure of a crossbeam in a bearing radial clearance detection mechanism.

[0019] In the figure: 1. bottom plate; 2. vertical plate; 3. horizontal channel; 4. arc column; 5. bearing body; 6. movable plate; 7. linear displacement sensor; 8. arc support plate; 9. lifting member; 10. crossbeam; 11. moving column; 12. screw rod; 13. bump; 14. locking knob; 15. first knob; 16. guide sleeve; 17. guide rod; 18. threaded block; 19. screw rod; 20. second knob. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-4As shown, a bearing radial clearance detection mechanism includes a base plate 1 and a vertical plate 2 vertically installed on the base plate 1, a horizontal channel 3 is opened through the vertical plate 2, two symmetrically arranged arc columns 4 are movably arranged in the horizontal channel 3, and a bearing body 5 is jointly sleeved on the two arc columns 4, a hollow structured crossbeam 10 is provided on the side of the vertical plate 2 away from the bearing body 5, one end of the arc column 4 is connected to a moving column 11 extending into the crossbeam 10, a through groove for inserting the moving column 11 is opened on the side of the crossbeam 10 close to the vertical plate 2, and the through groove is arranged along the length direction of the crossbeam 10, two kinds of screw rods 12 with opposite threads are rotatably installed in the crossbeam 10, and the screw rod 12 is threadedly connected to the moving column 11, and a first knob 15 coaxially connected to the screw rod 12 is provided on the outer side of the crossbeam 10.

[0022] A protrusion 13 is installed on the arc side wall of the arc column 4 away from the moving column 11, and a distance adjustment mechanism is installed between the cross beam 10 and the vertical plate 2. The distance adjustment mechanism includes a guide sleeve 16 symmetrically installed at the bottom of the cross beam 10, and a guide rod 17 passing through the guide sleeve 16 is symmetrically installed on the side of the vertical plate 2 close to the cross beam 10, and the guide sleeve 16 and the guide rod 17 are slidably connected. A threaded block 18 is installed at the middle position of the bottom of the cross beam 10, and a screw rod 19 is rotatably installed on the side wall of the vertical plate 2, and a second knob 20 is provided at the end of the screw rod 19. The threaded block 18 is threadedly connected with the screw rod 19, which is convenient for adjusting the distance between the cross beam 10 and the vertical plate 2, so that the cross beam 10 pulls the arc column 4 to move in the direction perpendicular to the vertical plate 2, and cooperates with the protrusion 13 to facilitate its contact with the edge of the inner ring of the bearing body 5.

[0023] A movable plate 6 is provided on the top of the vertical plate 2. The movable plate 6 is a hollow structure with an opening at the bottom. The movable plate 6 is sleeved on the vertical plate 2. The inner cross-section of the movable plate 6 is the same as the cross-section of the vertical plate 2, so that the movable plate 6 can only be lifted and slid. A locking knob 14 for pressing against the vertical plate 2 is threadedly installed on the movable plate 6 to facilitate locking the position of the movable plate 6. A linear displacement sensor 7 located directly above the bearing body 5 is installed on the movable plate 6 to facilitate detection of the displacement. An arc-shaped support plate 8 is provided directly below the bearing body 5. A lifting member 9 is installed between the arc-shaped support plate 8 and the bottom plate 1. The lifting member 9 includes a cylinder, and the piston rod of the cylinder is connected to the arc-shaped support plate 8.

[0024] The working principle of the utility model is as follows: the bearing body 5 to be tested is sleeved on the two arc columns 4, and the first knob 15 is turned to drive the screw rod 12 to rotate, so that the two movable columns 11 drive the two arc columns 4 to move in opposite directions, so that the inner ring of the bearing body 5 can be positioned against each other, and then the second knob 20 is turned to drive the screw rod 19 to rotate, so that the crossbeam 10 drives the guide sleeve 16 to slide along the guide rod 17, and the crossbeam 10 pulls the arc column 4 to move in the direction of the vertical vertical plate 2 through the movable column 11 until the protrusion 13 on the arc column 4 contacts the edge of the inner ring of the bearing body 5. The axial positioning of the inner ring can be achieved, and the locking knob 14 is loosened to press the movable plate 6 to slide along the vertical plate 2, so that the detection end of the linear displacement sensor 7 pushes the outer ring of the bearing body 5 to the lowest point, and the value displayed by the linear displacement sensor 7 is recorded at this time, and the locking knob 14 is tightened to position the movable plate 6. Finally, the lifting member 9 is started to drive the arc-shaped support plate 8 to rise until the outer ring of the bearing body 5 is pushed to the highest point. At this time, the displacement value displayed by the linear displacement sensor 7 is read, and the radial clearance of the bearing body 5 is obtained by subtracting the value read previously from the value read later.

[0025] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A bearing radial clearance detection mechanism, comprising a base plate (1) and a vertical plate (2) vertically mounted on the base plate (1), characterized in that: The vertical plate (2) is provided with a transverse channel (3) through which two symmetrically arranged arc columns (4) are movably arranged, and a bearing body (5) is sleeved on the two arc columns (4). A movable plate (6) is provided on the top of the vertical plate (2), and a linear displacement sensor (7) located directly above the bearing body (5) is installed on the movable plate (6). An arc support plate (8) is provided directly below the bearing body (5), and a lifting member ( 9), a hollow crossbeam (10) is provided on the side of the vertical plate (2) away from the bearing body (5), a distance adjustment mechanism is installed between the crossbeam (10) and the vertical plate (2), one end of the arc column (4) is connected to a movable column (11) extending into the crossbeam (10), two screw rods (12) with opposite threads are rotatably installed in the crossbeam (10), and the screw rod (12) is threadedly connected to the movable column (11), and a protrusion (13) is installed on the arc side wall of the arc column (4) away from the movable column (11).

2. A bearing radial clearance detection mechanism according to claim 1, characterized in that: The movable plate (6) is a hollow structure with an opening at the bottom. The movable plate (6) is sleeved on the vertical plate (2), and a locking knob (14) for pressing against the vertical plate (2) is threadedly mounted on the movable plate (6).

3. A bearing radial clearance detection mechanism according to claim 2, characterized in that: The inner cross section of the movable plate (6) is the same as the cross section of the vertical plate (2).

4. A bearing radial clearance detection mechanism according to claim 1, characterized in that: A through slot for inserting the movable column (11) is provided on one side of the cross beam (10) close to the vertical plate (2), and the through slot is arranged along the length direction of the cross beam (10). A first knob (15) coaxially connected to the screw rod (12) is provided on the outer side of the cross beam (10).

5. A bearing radial clearance detection mechanism according to claim 1, characterized in that: The distance adjustment mechanism comprises a guide sleeve (16) symmetrically mounted on the bottom of the cross beam (10); a guide rod (17) passing through the guide sleeve (16) is symmetrically mounted on one side of the vertical plate (2) close to the cross beam (10); the guide sleeve (16) and the guide rod (17) are slidably sleeved; a threaded block (18) is mounted at the middle position of the bottom of the cross beam (10); a screw rod (19) is rotatably mounted on the side wall of the vertical plate (2); a second knob (20) is provided at the end of the screw rod (19); and the threaded block (18) and the screw rod (19) are threadedly sleeved.

6. A bearing radial clearance detection mechanism according to claim 1, characterized in that: The lifting member (9) comprises a cylinder, and the piston rod of the cylinder is connected to the arc-shaped supporting plate (8).

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