A slewing bearing detection device

Abstract

The invention discloses a slewing bearing detection device, which belongs to the technical field of slewing bearing detection, and comprises: a base; a clamping assembly, which is mounted on the base and is used to clamp and fix the slewing bearing to be detected; a driving assembly, which is mounted on the base; a detection part, which is mounted on the driving assembly, and the detection part rotates around the axis of the base under the drive of the driving assembly, and descends layer by layer during the rotation process; wherein, after the clamping assembly fixes the slewing bearing, the axis of the slewing bearing and the axis of the base coincide with each other, and the invention can simultaneously measure errors in two directions during the detection process, thereby improving the detection efficiency.

Description

Technical Field

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

[0002] As an important mechanical component, slewing bearing is widely used in various rotating machines. Its quality and precision are directly related to the stability and service life of the entire mechanical system. Therefore, the detection of slewing bearing is particularly important. Most traditional slewing bearing detection devices can only detect the error in a single direction of the slewing bearing, and cannot take into account the error measurement in two directions at the same time. Detecting a single direction one by one will result in low detection efficiency. In order to solve the above problem, the present invention provides a slewing bearing detection device. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, an object of the present invention is to provide a slewing bearing detection device, which can measure errors in two directions simultaneously during the detection process, thereby improving the detection efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a slewing bearing detection device, comprising:

[0005] Base;

[0006] A clamping assembly, which is mounted on the base and is used to clamp and fix the slewing bearing to be tested;

[0007] A drive assembly, wherein the drive assembly is mounted on the base;

[0008] A detection part, wherein the detection part is mounted on the driving assembly, and the detection part rotates around the axis of the base under the drive of the driving assembly, and descends layer by layer during the rotation process;

[0009] Wherein, when the clamping assembly fixes the slewing bearing, the axis of the slewing bearing and the axis of the base coincide with each other.

[0010] Preferably, the drive assembly comprises:

[0011] A central shaft, wherein the central shaft is fixedly connected to the base;

[0012] A driving sleeve, the driving sleeve is rotatably sleeved on the outer side of the lower end of the central shaft;

[0013] A plurality of transmission rods, wherein the plurality of transmission rods are fixedly connected to the upper end surface of the driving sleeve and are evenly distributed along the circumference of the driving sleeve;

[0014] A plurality of annular grooves are provided on the outer side surface of the central axis and are evenly distributed along the axial direction of the central axis. The plurality of annular grooves are parallel to each other, and two adjacent annular grooves are connected via an oblique groove.

[0015] Preferably, the detection unit comprises:

[0016] A collar, which is sleeved on the outside of the central shaft and has a through hole adapted to the transmission rod;

[0017] A limiting shaft, wherein the limiting shaft is threadedly connected to the collar, and one end of the limiting shaft close to the central shaft extends into the annular groove, and the limiting shaft is adapted to the annular groove;

[0018] A connecting frame, the connecting frame is fixedly connected to the sleeve ring;

[0019] A base, wherein the base is mounted on the connecting frame;

[0020] A deformation frame, wherein the deformation frame is slidably mounted on the base, and a spring is connected between the deformation frame and the base;

[0021] A detection shaft, the axis of which is parallel to the axis of the base, and the detection shaft is rotatably mounted on the deformation frame;

[0022] Wherein, the detection shaft is pressed against the inner ring surface of the slewing bearing under the elastic force of the spring, and when an error occurs in the inner ring surface of the slewing bearing, the deformation frame will be deformed.

[0023] Preferably, the deformation frame comprises:

[0024] Two telescopic rods, the two telescopic rods are slidably mounted on the base, and one end of the telescopic rod passes through the base and extends into a cavity provided inside the base, and the other end extends to the outside of the base;

[0025] Two connecting rods, one end of each of the two connecting rods is hinged to the corresponding telescopic rod, and the other end is hinged to an ear plate;

[0026] The spring is located between the telescopic rod and the inner wall of the cavity, and the detection shaft is rotatably installed between the two ear plates.

[0027] Preferably, a base rod is fixedly connected to the inner side wall of the cavity, one end of the base rod extends between the two telescopic rods and is installed with a displacement sensor adapted to the telescopic rods.

[0028] Preferably, a limiting rod matched with the telescopic rod is fixedly connected to the inner side wall of the cavity, and a limiting groove matched with the limiting rod is formed on the telescopic rod.

[0029] Preferably, the base is slidably mounted on the connecting frame through a through-hole provided on the connecting frame, and a clamping bolt is meshingly connected to the connecting frame, and one end of the clamping bolt close to the base abuts against the base.

[0030] Preferably, the lower end of the drive sleeve extends into an inner cavity opened inside the base, and a driven gear is fixedly connected to the outer side of the lower end of the drive sleeve, and the driven gear is meshed with a drive gear fixedly connected to the motor shaft of the drive motor, and the drive motor is installed inside the inner cavity.

[0031] Preferably, the clamping assembly comprises: a plurality of clamping rods, which are distributed on the base in a circular array with the base axis as a reference, the clamping rods extending through a through groove provided on the base to an inner cavity provided inside the base, and are fixedly connected with a slider, the slider is threadedly connected to a turbine disk rotatably mounted on the bottom side wall of the inner cavity, the turbine disk is meshedly connected with a clamping gear through teeth fixedly connected thereto, the clamping gear is fixedly connected to the motor shaft of the clamping motor, and the clamping motor is installed inside the inner cavity.

[0032] Preferably, a plurality of supporting blocks are fixedly connected to the base.

[0033] The beneficial effects of the present invention are:

[0034] The present invention can make the detection part move downward layer by layer during the rotation process by providing the annular groove and the inclined groove, so that the detection part can detect the entire inner ring surface of the slewing bearing during the movement process.

[0035] The present invention achieves that, through the cooperation between the detection shaft and the deformation frame, if errors occur in the radial direction and the axial direction of the inner ring surface of the slewing bearing during the detection of the detection shaft, the deformation frame will produce corresponding changes, and the errors in the radial direction and the axial direction of the inner ring surface of the slewing bearing can be detected at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of a slewing bearing detection device provided in an embodiment of the present invention.

[0038] Figure 2 Schematic diagram of the distribution of the support blocks of the present invention.

[0039] Figure 3 Schematic diagram of the internal structure of the inner cavity of the present invention.

[0040] Figure 4 It is a cross-sectional view of the central axis of the present invention.

[0041] Figure 5 For the present invention Figure 4 Enlarged view of point A.

[0042] Figure 6 Schematic diagram of the distribution of the annular grooves of the present invention.

[0043] Figure 7 It is a schematic diagram of the structure of the annular groove and the inclined groove of the present invention.

[0044] Description of reference numerals:

[0045] 1. Base, 2. Center axis, 3. Driving sleeve, 4. Transmission rod, 5. Ring groove, 6. Bevel groove, 7. Ring, 8. Limiting shaft, 9. Connecting frame, 10. Base, 11. Spring, 12. Detection shaft, 13. Telescopic rod, 14. Cavity, 15. Connecting rod, 16. Ear plate, 17. Base rod, 18. Displacement sensor, 19. Inner cavity, 20. Driven gear, 21. Driving motor, 22. Driving gear, 23. Clamping rod, 24. Slider, 25. Turbine disk, 26. Clamping gear, 27. Clamping motor, 28. Tightening bolt, 29. Limiting rod, 30. Support block. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] The present invention provides a slewing bearing detection device, such as Figures 1 to 7 shown.

[0048] Embodiment 1:

[0049] A slewing bearing detection device includes a base 1, on which a clamping assembly, a driving assembly, a detection unit and a plurality of support blocks 30 are installed. When performing detection work, the slewing bearing to be detected is placed on the plurality of support blocks 30, and then the slewing bearing is fixedly clamped by the clamping assembly. After the slewing bearing is fixed by the clamping assembly, the axis of the slewing bearing will coincide with the axis of the base 1. The setting of the support block 30 can create a gap between the lower side of the slewing bearing and the upper side of the base 1, thereby facilitating detection by the detection unit.

[0050] The driving assembly can drive the detection part to rotate with the axis of the base 1 as a reference, and the detection part can descend layer by layer during the rotation process, so that the detection part can fully detect the inner ring surface of the slewing bearing.

[0051] The driving assembly includes a central shaft 2, which is fixedly connected to the base 1. The lower end of the central shaft 2 passes through the base 1 and extends into an inner cavity 19 opened inside the base 1, and is fixedly connected to the bottom side wall of the inner cavity 19. A driving sleeve 3 is rotatably sleeved on the outer side of the lower end of the central shaft 2. The upper end of the driving sleeve 3 passes through the top side wall of the inner cavity 19 and is fixedly connected to a plurality of transmission rods 4, and the plurality of transmission rods 4 are evenly distributed along the circumference of the driving sleeve 3. A driven gear 20 is fixedly connected to the side surface of the lower end of the driving sleeve 3. The driven gear 20 is meshed with a driving gear 22. The driving gear 22 is fixedly connected to the motor shaft of a driving motor 21, and the driving motor 21 is installed inside the inner cavity 19.

[0052] A plurality of mutually parallel annular grooves 5 are formed on the central shaft 2 , and the plurality of annular grooves 5 are evenly distributed on the central shaft 2 along the axial direction of the central shaft 2 , and two adjacent annular grooves 5 are connected via an inclined groove 6 .

[0053] The detection part includes a ring 7, which is sleeved on the outer side of the central axis 2, and the ring 7 is slidably connected to the transmission rod 4 through a through hole provided thereon. When the driving sleeve 3 rotates, the driving sleeve 3 will drive the ring 7 to rotate through the transmission rod 4, and the ring 7 can slide up and down along the axial direction of the central axis 2 during the rotation process.

[0054] The collar 7 is threadedly connected to a limit shaft 8, and one end of the limit shaft 8 close to the central axis 2 extends to the inside of the annular groove 5. Figure 2 During the clockwise rotation in the direction shown, the limit shaft 8 will move synchronously inside the annular groove 5, and move to the inside of the next annular groove 5 under the guidance of the corresponding inclined groove 6, so that the ring 7 can descend layer by layer during the rotation process to complete the detection of the inner ring surface of the slewing bearing. The ring 7 descends one layer at a time during the rotation process and remains in a horizontal state when the limit shaft 8 rotates inside the annular groove 5.

[0055] A connecting frame 9 is fixedly connected to the collar 7, and a base 10 is slidably mounted on the connecting frame 9 through a through hole provided thereon, and a tightening bolt 28 is threadedly connected to the connecting frame 9. When the tightening bolt 28 presses against the base 10, the position of the base 10 remains fixed, and when the tightening bolt 28 is not pressed against the base 10, the base 10 can slide on the connecting frame 9. The position of the base 10 can be adjusted according to the size of the slewing bearing to be detected, so that slewing bearings of different sizes can be detected.

[0056] A deformation frame is installed on the base 10, and a spring 11 is connected between the deformation frame and the base 10. A detection shaft 12 is rotatably installed on the deformation frame. The axis of the detection shaft 12 is parallel to the axis of the slewing bearing. Under the action of the spring 11, the detection shaft 12 can press against the inner ring surface of the slewing bearing.

[0057] Embodiment 2:

[0058] The deformation frame includes two telescopic rods 13, which are slidably installed on the base 10, and one end of the telescopic rod 13 passes through the base 10 and extends into a cavity 14 opened inside the base 10, and the other end is hinged with a connecting rod 15. One end of the spring 11 is fixedly connected to the inner wall of the cavity 14, and the other end is fixedly connected to an end surface of the telescopic rod 13 located inside the cavity 14. A limiting rod 29 is fixedly connected to the inner wall of the cavity 14 so that the telescopic rod 13 can slide more stably on the base 10. The ends of the two connecting rods 15 away from the corresponding telescopic rods 13 are hinged with ear plates 16, and the detection shaft 12 is rotatably installed between the two ear plates 16.

[0059] A base rod 17 is fixedly installed inside the cavity 14, one end of the base rod 17 extends between the two telescopic rods 13, and a displacement sensor 18 compatible with the telescopic rod 13 is installed. The displacement sensor 18 is powered by a battery installed on the base 10, and the displacement sensor 18 is electrically connected to a wireless information transmission module installed inside the base 10. The signal detected by the displacement sensor 18 will be sent to the receiving device of the staff through the wireless information transmission module. The displacement sensor 18 and the wireless information transmission module are both existing technologies and have been widely used, so the present invention will not be elaborated. For example, the displacement sensor 18 can adopt a LE550I model laser displacement sensor, and the wireless information transmission module can adopt a Bluetooth module.

[0060] During the detection process, if there is an error in the axial direction of the inner ring surface of the slewing bearing, the axis of the detection shaft 12 will produce a corresponding deflection under the pressing action of the spring 11, so that the side of the detection shaft 12 can fit the inner ring surface of the slewing bearing. At this time, a relative displacement will occur between the two telescopic rods 13, and the displacement sensor 18 can detect the displacement between the two telescopic rods 13.

[0061] If an error occurs in the radial direction of the inner ring surface of the slewing bearing, the detection shaft 12 will slide in a direction away from or close to the center axis 2 according to the error generated by the inner ring surface of the slewing bearing, so that the two telescopic rods 13 can be displaced synchronously. At this time, the displacement sensor 18 can detect the displacement of the two telescopic rods 13.

[0062] Embodiment three:

[0063] The clamping assembly includes a plurality of clamping rods 23 distributed in a circular array on the base 1 with the axis of the base 1 as the reference. The clamping rod 23 extends through the through groove on the base 1 to the inner cavity 19 provided inside the base 1, and is fixedly connected with a slider 24. The slider 24 is adapted to the through groove, and the through groove can limit the slider 24. The through groove is provided along the radial direction of the base 1. The slider 24 is threadedly connected to a turbine disk 25 rotatably installed on the side wall of the bottom of the inner cavity 19. When the turbine disk 25 rotates, a plurality of sliders 24 can slide along the trajectory of the through groove at the same time. The turbine disk 25 is meshed with a clamping gear 26 through teeth fixed thereon. The clamping gear 26 is fixedly connected to the motor shaft of a clamping motor 27. The clamping motor 27 is installed inside the inner cavity 19. The rotation of the motor shaft of the clamping motor 27 can drive the turbine disk 25 to rotate through the clamping gear 26, thereby enabling the slider 24 to drive the clamping rod 23 to rotate, and then enabling the plurality of clamping rods 23 to cooperate with each other to clamp and fix the slewing bearing.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A slewing bearing detection device, characterized in that: include: Base (1); A clamping assembly, the clamping assembly being mounted on the base (1) and used for clamping and fixing the slewing bearing to be tested; A drive assembly, the drive assembly being mounted on the base (1); A detection part, the detection part is mounted on the driving assembly, and the detection part rotates around the axis of the base (1) under the drive of the driving assembly, and descends layer by layer during the rotation process; Wherein, when the clamping assembly fixes the slewing bearing, the axis of the slewing bearing and the axis of the base (1) coincide with each other; The drive assembly comprises: A central shaft (2), wherein the central shaft (2) is fixedly connected to the base (1); A driving sleeve (3), the driving sleeve (3) being rotatably sleeved on the outer side of the lower end of the central shaft (2); A plurality of transmission rods (4), the plurality of transmission rods (4) being fixedly connected to the upper end surface of the drive sleeve (3) and evenly distributed along the circumference of the drive sleeve (3); a plurality of annular grooves (5), the plurality of annular grooves (5) being formed on the outer side surface of the central axis (2) and being evenly distributed along the axial direction of the central axis (2), the plurality of annular grooves (5) being parallel to each other, and two adjacent annular grooves (5) being connected via an oblique groove (6); The lower end of the driving sleeve (3) extends into an inner cavity (19) opened inside the base (1), and a driven gear (20) is fixedly connected to the outer side of the lower end of the driving sleeve (3), and the driven gear (20) is meshingly connected to a driving gear (22) fixedly connected to the motor shaft of a driving motor (21), and the driving motor (21) is installed inside the inner cavity (19); The detection unit comprises: A collar (7), the collar (7) being sleeved on the outside of the central shaft (2), and having a through opening adapted to fit the transmission rod (4); A limiting shaft (8), wherein the limiting shaft (8) is threadedly connected to the collar (7), and one end of the limiting shaft (8) close to the central shaft (2) extends into the annular groove (5), and the limiting shaft (8) is adapted to the annular groove (5); A connecting frame (9), the connecting frame (9) being fixedly connected to the sleeve ring (7); A base (10), wherein the base (10) is mounted on the connecting frame (9); A deformation frame, the deformation frame being slidably mounted on the base (10), and a spring (11) being connected between the deformation frame and the base (10); A detection shaft (12), wherein the axis of the detection shaft (12) is parallel to the axis of the base (1), and the detection shaft (12) is rotatably mounted on the deformation frame; The detection shaft (12) is pressed against the inner ring surface of the slewing bearing under the elastic force of the spring (11), and when an error occurs in the inner ring surface of the slewing bearing, the deformation frame will deform.

2. A slewing bearing detection device according to claim 1, characterized in that: The deformation frame comprises: Two telescopic rods (13), the two telescopic rods (13) being slidably mounted on the base (10), and one end of the telescopic rod (13) passing through the base (10) and extending into a cavity (14) provided inside the base (10), and the other end extending to the outside of the base (10); Two connecting rods (15), one end of the two connecting rods (15) is hinged to the corresponding telescopic rod (13) respectively, and the other end is hinged to a lug plate (16); The spring (11) is located between the telescopic rod (13) and the inner wall of the cavity (14), and the detection shaft (12) is rotatably mounted between the two ear plates (16).

3. A slewing bearing detection device as claimed in claim 2, characterized in that: A base rod (17) is fixedly connected to the inner side wall of the cavity (14); one end of the base rod (17) extends between the two telescopic rods (13) and is provided with a displacement sensor (18) adapted to the telescopic rods (13).

4. A slewing bearing detection device as claimed in claim 2, characterized in that: A limiting rod (29) adapted to the telescopic rod (13) is fixedly connected to the inner side wall of the cavity (14), and a limiting groove adapted to the limiting rod (29) is provided on the telescopic rod (13).

5. A slewing bearing detection device as claimed in claim 1, characterized in that: The base (10) is slidably mounted on the connecting frame (9) through a through opening provided on the connecting frame (9), and a clamping bolt (28) is meshingly connected to the connecting frame (9), wherein one end of the clamping bolt (28) close to the base (10) abuts against the base (10).

6. A slewing bearing detection device as claimed in claim 1, characterized in that: The clamping assembly comprises: a plurality of clamping rods (23), the plurality of clamping rods (23) being distributed on the base (1) in a circular array with the axis of the base (1) as a reference, the clamping rods (23) extending through a through slot provided on the base (1) into an inner cavity (19) provided inside the base (1), and being fixedly connected to a slider (24), the slider (24) being threadedly connected to a turbine disk (25) rotatably mounted on the side wall of the bottom of the inner cavity (19), the turbine disk (25) being meshingly connected to a clamping gear (26) via teeth fixedly connected thereto, the clamping gear (26) being fixedly connected to a motor shaft of a clamping motor (27), and the clamping motor (27) being mounted inside the inner cavity (19).

7. A slewing bearing detection device as claimed in claim 1, characterized in that: A plurality of support blocks (30) are fixedly connected to the base (1).

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