Portable bearing connecting rod looseness detection device

Abstract

A portable bearing connecting rod looseness detection device of the present invention comprises a connecting rod and a bearing installed in the connecting rod, and further comprises a driving structure, the driving structure comprises a rotating shaft, one end of the rotating shaft is connected with a motor, the other end of the rotating shaft is provided with a rotating cylinder, and the surface of the rotating cylinder is provided with a plurality of supporting structures. The ends, away from the rotating cylinder, of the supporting structures are fixedly connected with arc-shaped top plates, and the arc-shaped top plates are attached to the inner rings of the bearings. The front end of the rotating cylinder is rotationally connected with a connecting cylinder, a detection structure is installed on the connecting cylinder, the driving structure is used for driving a bearing to rotate, the detection structure is used for detecting the offset of the bearing, the offset of the bearing can be detected, and meanwhile self-adaptive adjustment can be conducted according to bearings of different sizes.

Description

Technical Field

[0001] The invention relates to a portable bearing connecting rod loosening detection device, belonging to the technical field of bearing connecting rod manufacturing. Background Art

[0002] In bearing measurement, it is usually necessary to check the axial offset of the bearing. Currently, this inspection is usually completed by workers manually fixing the outer ring of the bearing to squeeze the inner ring of the bearing.

[0003] Chinese patent CN207487545U discloses a bearing axial offset measuring tool, including a support seat, on which a driving member and a bearing seat are installed, the bearing seat is located above the driving member and is suspended, a push rod with one end connected to the pushing member is installed inside the bearing seat, and the other end of the push rod abuts against the inner ring of the measured bearing, and a detachable bearing cover is fixedly installed on the top of the bearing seat, and the bearing cover and the bearing seat form a positioning groove for the outer ring of the measured bearing to be embedded and fixed, and a detection member for detecting the rising distance of the inner ring is arranged above the inner ring of the measured bearing; however, the structure is relatively complicated and can only detect bearings that have not yet been installed, but cannot detect the bearing connecting rod. At the same time, it cannot be adaptively adjusted according to different types of bearings. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a portable bearing connecting rod looseness detection device, which can detect the offset of the bearing and can perform adaptive adjustment according to bearings of different sizes.

[0005] The technical solution of the present invention is as follows:

[0006] A portable bearing connecting rod loosening detection device comprises a connecting rod and a bearing installed inside the connecting rod, and also comprises a driving structure, wherein the driving structure comprises a rotating shaft, one end of the rotating shaft is connected to a motor, and the other end of the rotating shaft is installed with a rotating cylinder, and a plurality of supporting structures are arranged on the surface of the rotating cylinder, and the ends of the supporting structures away from the rotating cylinder are fixedly connected with an arc-shaped top plate, and the arc-shaped top plate fits the inner ring of the bearing; the front end of the rotating cylinder is rotatably connected with a connecting cylinder, and a detection structure is installed on the connecting cylinder, the driving structure is used to drive the bearing to rotate, and the detection structure is used to detect the displacement of the bearing; the arc-shaped top plate comprises a plurality of adjusting blocks, and the plurality of adjusting blocks are connected by torsion springs, the adjusting blocks comprise a rigid base and a flexible cover attached to the rigid base, and the space between the rigid base and the flexible cover is filled with electrorheological fluid; an elastic metal plate is installed at the bottom of the rigid base of the plurality of adjusting blocks, and the threaded rod is fixedly connected to the bottom of the elastic metal plate.

[0007] Wherein, a rotating disc is fixedly arranged at the front end of the rotating cylinder, a circular groove is opened at the rear end of the connecting cylinder, the rotating disc is slidably inserted in the circular groove, and the rotating disc is rotatably connected to the circular groove.

[0008] Among them, a first bevel gear is arranged at the rear end of the connecting cylinder, and the supporting structure includes a rotating hole which is opened through the surface of the rotating cylinder, a threaded sleeve is rotatably connected in the rotating hole, a second bevel gear is arranged at one end of the threaded sleeve, and the second bevel gear is located inside the rotating cylinder, a threaded rod is rotatably connected inside the threaded sleeve, and one end of the threaded rod is fixedly connected to the bottom of the arc-shaped top plate.

[0009] The arc-shaped top plate further includes an activation device and a controller. The activation device provides an activation signal for the electrorheological fluid, and the controller works in coordination with the activation device.

[0010] Among them, a plurality of threaded holes are circumferentially opened on the connecting tube, and the detection structure is installed on the connecting tube through the threaded holes; the detection structure includes a detection shell fixed on the connecting tube, a displacement sensor is arranged inside the detection shell, the displacement sensor is connected to a slider, a spring is arranged between the bottom of the slider and the detection shell, the other end of the slider is connected to a detection probe, and the detection end of the detection probe abuts against the bottom of the arc-shaped top plate.

[0011] Wherein, a plurality of first telescopic rods are installed on the outer surface of the rotating cylinder, and the other ends of the first telescopic rods are hinged to the bottom of the arc-shaped top plate.

[0012] Wherein, a second telescopic rod is installed inside the detection shell, and the other end of the second telescopic rod is fixedly connected to the bottom of the sliding block; the spring is sleeved outside the second telescopic rod.

[0013] The space between the rigid base and the flexible cover may also be filled with magnetorheological fluid, magnetorheological elastomer, electrorheological elastomer and a combination thereof.

[0014] Wherein, the activation signal is an electrical signal, a magnetic signal, or a combination of at least one of the above signals.

[0015] The present invention has the following beneficial effects:

[0016] The present invention arranges the rotating cylinder and the connecting cylinder to be separable. When the rotating cylinder and the connecting cylinder are spliced ​​together, the first bevel gear and the second bevel gear can be matched to adjust the connecting cylinder to drive the arc-shaped top plate to fit the inner rings of bearings of different sizes. When the rotating cylinder and the connecting cylinder are separated, the bearing can be driven to rotate by rotating the rotating cylinder. A detection structure is added to the connecting cylinder to detect the displacement of the bearing. At the same time, the portability of the device is guaranteed. When it is needed, it is only necessary to ensure that the rotating cylinder and the connecting cylinder remain stable and motionless. The detection structure is arranged on the connecting cylinder to ensure that the detection structure and the connecting cylinder remain stable synchronously, thereby avoiding measurement errors.

[0017] The present invention configures the arc-shaped top plate to be composed of a number of adjustment blocks spliced ​​together, and the electrorheological fluid is filled inside. The activation signal can convert the interior of the adjustment block into rigidity, so that the flexible cover can fit the inner ring of the bearing in a rigid state, while ensuring full fit to the inner ring of the bearing and ensuring measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A half-section diagram of the installation of the drive structure of the present invention;

[0019] Figure 2 A half-section diagram of the installation of the detection structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 A local enlarged view of point A;

[0021] Figure 4 It is a schematic diagram of the arc-shaped top plate structure of the present invention.

[0022] The reference numerals in the figure are as follows:

[0023] 1. Connecting rod; 2. Bearing; 3. Rotating shaft; 4. Motor; 5. Rotating cylinder; 6. Arc top plate; 7. Connecting cylinder; 8. Detection shell; 51. Rotating disc; 52. Threaded sleeve; 53. Threaded rod; 54. First telescopic rod; 55. Second bevel gear; 61. Adjusting block; 62. Rigid base; 63. Flexible cover; 64. Activating device; 65. Controller; 66. Elastic metal plate; 71. Circular groove; 72. First bevel gear; 81. Displacement sensor; 82. Slider; 83. Spring; 84. Detection probe; 85. Second telescopic rod. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] See also Figures 1 to 4 , the invention provides a technical solution:

[0026] A portable bearing connecting rod loosening detection device comprises a connecting rod 1 and a bearing 2 installed inside the connecting rod 1, and also comprises a driving structure, the driving structure comprises a rotating shaft 3, one end of the rotating shaft 3 is connected to a motor 4, the other end of the rotating shaft 3 is installed with a rotating cylinder 5, a plurality of supporting structures are arranged on the surface of the rotating cylinder 5, the ends of the supporting structures away from the rotating cylinder 5 are fixedly connected with an arc-shaped top plate 6, and the arc-shaped top plate 6 fits the inner ring of the bearing 2; the front end of the rotating cylinder 5 is rotatably connected with a connecting cylinder 7, and a detection structure is installed on the connecting cylinder 7, the driving structure is used to drive the bearing 2 to rotate, and the detection structure is used to detect the offset of the bearing 2;

[0027] Specifically, the device is convenient to carry and can be taken out for use at any time. When in use, one end of the rotating shaft 3 is inserted into the interior of the bearing 2, and then the supporting structure cooperates with the arc-shaped top plate 6 so that the surface of the arc-shaped top plate 6 can be tightly pressed against the inner ring of the bearing 2. The rotating shaft 3 is driven to rotate by the motor 4. Under the action of the arc-shaped top plate 6, the bearing 2 is driven to rotate. Then, the connecting tube 7 is fixed, and other fixing methods such as a base fixed to the ground are added to keep the connecting tube 7 relatively stable. A detection structure is installed on the connecting tube 7 to detect the displacement of the bearing 2.

[0028] The front end of the rotating cylinder 5 is fixedly provided with a rotating disc 51, and the rear end of the connecting cylinder 7 is provided with a circular groove 71. The rotating disc 51 is slidably inserted into the circular groove 71, and the rotating disc 51 is rotatably connected with the circular groove 71. At the same time, a limiting block is provided at the outlet end of the circular groove 71 to prevent the rotating disc 51 from being separated from the circular groove 71 during the sliding process.

[0029] As a preferred embodiment, a first bevel gear 72 is provided at the rear end of the connecting cylinder 7, and the supporting structure includes a rotating hole that is through and opened on the surface of the rotating cylinder 5, and a threaded sleeve 52 is rotatably connected in the rotating hole, and a second bevel gear 55 is provided at one end of the threaded sleeve 52, and the second bevel gear 55 is located inside the rotating cylinder 5, and a threaded rod 53 is rotatably connected inside the threaded sleeve 52, and one end of the threaded rod 53 is fixedly connected to the bottom of the arc-shaped top plate 6; through the supporting structure, when the rotating disc 51 is fully inserted into the circular groove 71, the second bevel gear 55 and the first bevel gear 72 are meshed; by rotating the connecting cylinder 7, the first bevel gear 72 is driven to rotate, and the first bevel gear 72 drives the second bevel gear 55 to rotate. The bevel gear 55 rotates to rotate the threaded sleeve 52, so that the threaded rod 53 inside the threaded sleeve 52 extends toward the inner ring of the bearing 2, so that the arc-shaped top plate 6 can fit bearings 2 of different sizes for detection; it is worth mentioning that a plurality of first telescopic rods 54 are installed on the outer surface of the rotating cylinder 5, and the other end of the first telescopic rod 54 is hinged to the bottom of the arc-shaped top plate 6; when the first bevel gear 72 drives the second bevel gear 55 to rotate to rotate the threaded sleeve 52, the first telescopic rod 54 is limited so that the arc-shaped top plate 6 and the threaded rod 53 will not rotate together with the threaded sleeve 52, but the threaded rod 53 will extend toward the inner ring of the bearing 2;

[0030] The arc-shaped top plate 6 needs to be able to perfectly fit the inner rings of bearings 2 of different sizes, and at the same time, it needs to maintain a certain rigidity to avoid measurement errors. Therefore, the arc-shaped top plate 6 includes a plurality of adjustment blocks 61, and the plurality of adjustment blocks 61 are connected by torsion springs, that is, in the absence of external force, due to the action of the torsion springs, the arc-shaped top plate 6 composed of the plurality of adjustment blocks 61 is horizontal. When the arc-shaped top plate 6 is bent inward by the force of the inner ring of the bearing 2, the torsion spring will simultaneously give a reaction force to the bearing 2, so that the adjustment block 61 can fit tightly against the inner ring of the bearing 2. The adjustment block 61 includes a rigid base 62 and a flexible cover 63 attached to the rigid base 62, and the space between the rigid base 62 and the flexible cover 63 is filled with electrorheological fluid; it also includes an activation device 64 and a controller 65, the activation device 64 provides an activation signal for the electrorheological fluid, and the controller 65 and The activation device 64 works together; an elastic metal plate 66 is installed at the bottom of the rigid base 62 of the plurality of adjustment blocks 61, and the threaded rod 53 abuts against the bottom of the elastic metal plate 66; the space between the rigid base 62 and the flexible cover 63 can also be filled with magnetorheological fluid, magnetorheological elastomer, electrorheological elastomer and a combination thereof; the activation signal is a combination of an electrical signal, a magnetic signal and the above-mentioned signals including at least the present embodiment; when the threaded rod 53 extends toward the inner ring of the bearing 2 and makes the arc-shaped top plate 6 fit the inner ring of the bearing 2, that is, the flexible cover 63 is squeezed against the inner ring of the bearing 2, and then the activation signal and the controller 65 work together to deform the internal electrorheological fluid, so that the arc-shaped top plate 6 is rigid as a whole, and can better fit the inner rings of the bearings 2 of different sizes while maintaining good rigidity to improve the accuracy of the measurement.

[0031] A plurality of threaded holes are provided in the circumferential direction on the connecting tube 7, and the detection structure is installed on the connecting tube 7 through the threaded holes; the detection structure includes a detection housing 8 fixed on the connecting tube 7, a displacement sensor 81 is provided inside the detection housing 8, a slider 82 is connected to the displacement sensor 81, a spring 83 is provided between the bottom of the slider 82 and the detection housing 8, a second telescopic rod 85 is installed inside the detection housing 8, and the other end of the second telescopic rod 85 is fixedly connected to the bottom of the slider 82; the spring 83 is sleeved on the outside of the second telescopic rod 85 to maintain the stability of the spring 83 when it is displaced; the slider 8 The other end of the bearing 2 is connected to a detection probe 84, and the detection end of the detection probe 84 abuts against the bottom of the arc-shaped top plate 6. Under the action of the spring 83, the detection end of the detection probe 84 always abuts against the bottom of the arc-shaped top plate 6. The circumferential offset generated when the bearing 2 rotates is detected by the detection structure. The detection probe 84 abuts against the bottom of the arc-shaped top plate 6, so that the vibration offset generated by the bearing 2 during rotation drives the arc-shaped top plate 6 and the detection probe 84 to deflect together, and because the arc-shaped top plate 6 and the rotating cylinder 5 are slidably matched, the deflection of the arc-shaped top plate 6 will not be hindered.

[0032] At the same time, in order to make the detection structure also adaptable to bearings 2 of different sizes, the length can be increased by installing a gasket at the bottom of the detection housing 8;

[0033] The above scheme is used for detecting the circumferential offset of the bearing connecting rod. As a preferred embodiment, radial offset detection can be added. A stable transversely arranged detection structure can be attached externally so that the detection probe 84 of the detection structure contacts the side wall surface of the inner ring of the bearing 2. During the rotation of the bearing 2, the rotating cylinder 5 is pulled to cause the internal arc-shaped top plate 6 to slip. That is, by comparing the radial slip of the inner ring of the bearing 2 and the outer ring of the bearing 2, the displacement distance of the inner ring is measured, thereby improving the accuracy of the detection result.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A portable bearing connecting rod loosening detection device, comprising a connecting rod (1) and a bearing (2) installed inside the connecting rod (1), characterized in that: The invention also comprises a driving structure, wherein the driving structure comprises a rotating shaft (3), one end of the rotating shaft (3) is connected to a motor (4), the other end of the rotating shaft (3) is mounted with a rotating cylinder (5), a surface of the rotating cylinder (5) is provided with a plurality of supporting structures, the ends of the supporting structures away from the rotating cylinder (5) are fixedly connected with an arc-shaped top plate (6), the arc-shaped top plate (6) is in contact with the inner ring of the bearing (2); the front end of the rotating cylinder (5) is rotatably connected with a connecting cylinder (7), the connecting cylinder (7) is mounted with a detection structure, the driving structure is used to drive the bearing (2) to rotate, the The detection structure is used to detect the displacement of the bearing (2); the arc-shaped top plate (6) includes a plurality of adjustment blocks (61), the plurality of adjustment blocks (61) are connected by torsion springs, the adjustment blocks (61) include a rigid base (62) and a flexible cover (63) attached to the rigid base (62), and the space between the rigid base (62) and the flexible cover (63) is filled with electrorheological fluid; an elastic metal plate (66) is installed at the bottom of the rigid base (62) of the plurality of adjustment blocks (61), and the threaded rod (53) is fixedly connected to the bottom of the elastic metal plate (66).

2. A portable bearing connecting rod loosening detection device as claimed in claim 1, characterized in that: A rotating disc (51) is fixedly provided at the front end of the rotating cylinder (5), and a circular groove (71) is provided at the rear end of the connecting cylinder (7). The rotating disc (51) is slidably inserted into the circular groove (71), and the rotating disc (51) is rotatably connected to the circular groove (71).

3. A portable bearing connecting rod loosening detection device as claimed in claim 2, characterized in that: A first bevel gear (72) is provided at the rear end of the connecting cylinder (7), and the supporting structure comprises a rotating hole which is through-opened on the surface of the rotating cylinder (5), a threaded sleeve (52) is rotatably connected in the rotating hole, a second bevel gear (55) is provided at one end of the threaded sleeve (52), and the second bevel gear (55) is located inside the rotating cylinder (5), a threaded rod (53) is rotatably connected inside the threaded sleeve (52), and one end of the threaded rod (53) is fixedly connected to the bottom of the arc-shaped top plate (6).

4. A portable bearing connecting rod loosening detection device as claimed in claim 3, characterized in that: The arc-shaped top plate (6) also includes an activation device (64) and a controller (65). The activation device (64) provides an activation signal for the electrorheological fluid, and the controller (65) works in coordination with the activation device (64).

5. A portable bearing connecting rod loosening detection device as claimed in claim 4, characterized in that: The connecting tube (7) is provided with a plurality of threaded holes in an annular direction, and the detecting structure is mounted on the connecting tube (7) through the threaded holes; the detecting structure comprises a detecting shell (8) fixed on the connecting tube (7), a displacement sensor (81) is arranged inside the detecting shell (8), the displacement sensor (81) is connected to a slider (82), a spring (83) is arranged between the bottom of the slider (82) and the detecting shell (8), the other end of the slider (82) is connected to a detecting probe (84), and the detecting end of the detecting probe (84) is in contact with the bottom of the arc-shaped top plate (6).

6. A portable bearing connecting rod loosening detection device as claimed in claim 5, characterized in that: A plurality of first telescopic rods (54) are installed on the outer surface of the rotating cylinder (5), and the other ends of the first telescopic rods (54) are hinged to the bottom of the arc-shaped top plate (6).

7. A portable bearing connecting rod loosening detection device as claimed in claim 6, characterized in that: A second telescopic rod (85) is installed inside the detection housing (8), and the other end of the second telescopic rod (85) is fixedly connected to the bottom of the slider (82); the spring (83) is sleeved on the outside of the second telescopic rod (85).

8. A portable bearing connecting rod loosening detection device as claimed in claim 7, characterized in that: The space between the rigid base (62) and the flexible cover (63) may also be filled with magnetorheological fluid, magnetorheological elastomer, electrorheological elastomer or a combination thereof.

9. A portable bearing connecting rod loosening detection device as claimed in claim 8, characterized in that: The activation signal is an electrical signal, a magnetic signal, or a combination of at least one of the above signals.

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