Slewing bearing precision test tool

Abstract

The utility model discloses a slewing bearing precision testing tool, and belongs to the technical field of slewing bearing testing. The slewing bearing precision test tool comprises a test board, one side of the test board is provided with a fixing seat, the lower end of the fixing seat is provided with a clamping assembly, the upper end of the clamping assembly is movably connected with a rotating assembly, and the clamping assembly comprises a first motor, a first rotating block, a first pull rod, a first sliding block and a clamping plate. The outer ring of the slewing bearing is fixed through the clamping assembly, the obliquely-arranged clamping plate can adapt to slewing bearings of various diameters, the first motor works to control the dip angle of the clamping plate to change, the slewing bearing can be automatically pushed to move upwards and correspond to the rotating assembly in position, and the rotating assembly is fixed to the inner ring of the slewing bearing. The second sliding block controlled by the second motor can also adapt to slewing bearings of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing bearings, and more specifically, to a slewing bearing precision testing tooling. Background Technique

[0002] In the machinery manufacturing industry, the precision of slewing bearings directly affects the overall performance and service life of equipment. Existing detection methods have problems such as complex operation and low detection efficiency, and cannot meet the requirements of high-efficiency and precise detection.

[0003] The Chinese patent with the publication number CN218067467U discloses a slewing bearing testing tooling, which can stably fix slewing bearings of different sizes and test the pressure that can affect their normal operation under lateral pressure. However, the outer ring fixing component in this patent has a simple structure and is prone to looseness when applying force during testing. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a slewing bearing precision testing tooling to solve the above deficiencies.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A slewing bearing precision testing tooling of the utility model includes a test bench. A fixed seat is arranged on one side of the test bench, and a clamping component is installed at the lower end of the fixed seat. The upper end of the clamping component is movably connected with a rotating component. The clamping component fixes the outer ring of the slewing bearing to prevent the outer ring from rotating, and the rotating component is fixed to the inner ring of the slewing bearing to drive the inner ring of the slewing bearing to rotate. The clamping component includes a first motor, a first rotating block, a first pull rod, a first slider, and a clamping plate. The first motor is installed inside the test bench, the output end of the first motor is fixedly connected with the first rotating block, the end of the first rotating block is hinged with the first pull rod, one end of the first pull rod is hinged with the first slider, and one end of the first slider is hinged with the lower end of the clamping plate. By driving the first rotating block to rotate through the first motor, the first rotating block controls the movement position of the first slider through the first pull rod, driving the clamping plate to tilt.

[0007] Preferably, a measuring head is arranged on one side of the test bench, and a displacement sensor is arranged on the measuring head for measuring the relative displacement between the inner and outer rings.

[0008] Preferably, annularly distributed first sliding grooves are equidistantly arranged on the lower surface of the fixed seat, and the first slider is movably connected with the first sliding grooves. The first sliding grooves limit the movement path of the first slider, so that the first slider can only move in a straight line.

[0009] Preferably, a limiting pull rod is hinged to the outer wall of the fixed seat. A long waist slot is formed in the clamping plate. One end of the limiting pull rod is movably connected to the long waist slot. The limiting pull rod controls the middle position of the clamping plate. When the clamping plate is controlled to move by the first slider, the clamping plate rotates around the end of the limiting pull rod. An upper limit plate is arranged at the upper end of the clamping plate, and the upper limit plate is used to fix the outer ring of the slewing bearing.

[0010] Preferably, the rotating assembly includes a second motor, a second rotating block, a second pull rod, a second slider and a turntable. The second motor is installed inside the fixed seat. The output end of the second motor is fixedly connected to the second rotating block. One end of the second rotating block is movably connected to one end of the second pull rod. The other end of the second pull rod is movably connected to one end of the second slider. The turntable is sleeved with the second slider.

[0011] Preferably, a second chute matching the second slider is formed in the turntable. The second chute restricts the second slider to move in a straight line. An annular rail movably connected to the fixed seat is arranged on the lower surface of the turntable. An annular groove matching the annular rail is arranged on the upper surface of the fixed seat. A certain resistance is arranged between the annular rail and the annular groove.

[0012] Preferably, a contact end is arranged at the end of the second slider away from the second pull rod, and the contact end contacts the inner ring of the slewing bearing.

[0013] Adopting the technical solution provided by the present utility model, compared with the prior art, the following beneficial effects are obtained:

[0014] The outer ring of the slewing bearing is fixed by the clamping assembly of the present utility model. The inclined clamping plate can adapt to slewing bearings of various diameters. And by the operation of the first motor, the inclination angle of the clamping plate is controlled to change, and the slewing bearing can be automatically pushed up to correspond to the position of the rotating assembly. The rotating assembly is fixed to the inner ring of the slewing bearing. The second slider controlled by the second motor can also adapt to slewing bearings of different specifications. One motor is used to control the second slider to press against the inner ring of the slewing bearing and drive it to rotate. The structure is simple, convenient to control, and can automatically position the center of the circle. Description of the Drawings

[0015] Figure 1 It is the overall structure diagram of the slewing bearing precision test tooling of the present utility model;

[0016] Figure 2 It is the first perspective exploded view of the clamping assembly, rotating assembly and fixed seat of the present utility model;

[0017] Figure 3 It is the second perspective exploded view of the clamping assembly, rotating assembly and fixed seat of the present utility model;

[0018] Figure 4 It is the connection diagram of the clamping assembly, rotating assembly and fixed seat of the present utility model.

[0019] In the figure: 1. Test bench; 11. Measuring head; 2. Clamping assembly; 21. First motor; 22. First rotating block; 23. First pull rod; 24. First slider; 25. Clamping plate; 251. Long waist slot; 252. Upper limit plate; 3. Rotating assembly; 31. Second motor; 32. Second rotating block; 33. Second pull rod; 34. Second slider; 341. Contact end; 35. Turntable; 351. Second chute; 352. Annular rail; 4. Fixed seat; 41. First chute; 42. Limit pull rod. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0022] Combined with Figures 1-4 , a test tool for the precision of a slewing bearing of the present invention includes a test bench 1. A measuring head 11 is arranged on one side of the test bench 1. The measuring head 11 moves horizontally under the control of a telescopic cylinder to control the position of the measuring head 11. A displacement sensor is arranged on the measuring head 11 for measuring the relative displacement between the inner and outer rings, which can be inductive, capacitive, or magnetostrictive. A fixed seat 4 is arranged on the other side of the test bench 1. A clamping assembly 2 is installed at the lower end of the fixed seat 4. A rotating assembly 3 is movably connected to the upper end of the clamping assembly 2. The clamping assembly 2 fixes the outer ring of the slewing bearing to prevent the outer ring from rotating, and the rotating assembly 3 is fixed to the inner ring of the slewing bearing to drive the inner ring of the slewing bearing to rotate.

[0023] The clamping assembly 2 includes a first motor 21, a first rotating block 22, a first pull rod 23, a first slider 24, and a clamping plate 25. The first motor 21 is installed inside the test bench 1. The output end of the first motor 21 is fixedly connected to the first rotating block 22. The end of the first rotating block 22 is hinged to the first pull rod 23. One end of the first pull rod 23 is hinged to the first slider 24. One end of the first slider 24 is hinged to the lower end of the clamping plate 25. By driving the first rotating block 22 to rotate through the first motor 21, the first rotating block 22 controls the movement position of the first slider 24 through the first pull rod 23, driving the clamping plate 25 to tilt.

[0024] Specifically, the interior of the fixed seat 4 is a hollow structure. The first rotating block 22 and the first pull rod 23 are both installed inside the fixed seat 4. The lower surface of the fixed seat 4 is equidistantly provided with annularly distributed first sliding grooves 41. The first sliding block 24 is movably connected to the first sliding groove 41. The first sliding groove 41 restricts the movement path of the first sliding block 24, so that the first sliding block 24 can only move in a straight line. Furthermore, the first sliding blocks 24 move simultaneously towards the center of the enclosed circle or towards the outer circle of the circle, pulling the clamping plate 25 to tilt.

[0025] In order to limit the position of the clamping plate 25, a limiting pull rod 42 is hingedly connected to the outer wall of the fixed seat 4. A long waist-shaped groove 251 is formed on the clamping plate 25. One end of the limiting pull rod 42 is movably connected to the long waist-shaped groove 251. The limiting pull rod 42 controls the middle position of the clamping plate 25, so that when the clamping plate 25 is controlled to move by the first sliding block 24, the clamping plate 25 rotates around the end of the limiting pull rod 42. The diameter of the circle formed by the lower end of the clamping plate 25 is always smaller than the diameter of the circle formed by the upper end. When placing the slewing bearing in this way, the slewing bearing is supported by the lower clamping plate 25. When clamping the slewing bearing, the first sliding block 24 moves outwards, driving the upper end of the clamping plate 25 to move towards the center of the circle. The diameter of the circle formed by the upper end of the clamping plate 25 shrinks, pushing the slewing bearing to move upwards until it is restricted by the upper limit plate 252 provided at the upper end of the clamping plate 25. At this time, the clamping plate 25 fixes the outer ring of the slewing bearing.

[0026] The rotating assembly 3 includes a second motor 31, a second rotating block 32, a second pull rod 33, a second sliding block 34 and a turntable 35. The second motor 31 is installed inside the fixed seat 4, and the output end of the second motor 31 penetrates the upper top surface of the fixed seat 4 and is fixedly connected to the second rotating block 32. One end of the second rotating block 32 is movably connected to one end of the second pull rod 33. The other end of the second pull rod 33 is movably connected to one end of the second sliding block 34. A second sliding groove 351 matching the second sliding block 34 is formed on the turntable 35. The second sliding groove 351 restricts the second sliding block 34 to move in a straight line. The end of the second sliding block 34 away from the second pull rod 33 is provided with a contact end 341. The contact end 341 contacts the inner ring of the slewing bearing. Under the control of the second motor 31, the second rotating block 32 rotates, the second pull rod 33 drives the second sliding block 34 to extend out of the second sliding groove 351, and the contact end 341 abuts against the inner ring of the slewing bearing to fix the inner ring of the slewing bearing. When the second motor 31 continues to rotate and the second sliding block 34 can no longer move in a straight line, it follows the rotation. The second sliding block 34 drives the turntable 35 to rotate synchronously. An annular rail 352 movably connected to the fixed seat 4 is provided on the lower surface of the turntable 35. An annular groove matching the annular rail 352 is provided on the upper surface of the fixed seat 4. A certain resistance is provided between the annular rail 352 and the annular groove. When the contact end 341 does not abut against the inner ring of the slewing bearing, the turntable 35 cannot rotate synchronously. Then, one motor is used to control the second sliding block 34 to abut against the inner ring of the slewing bearing and drive it to rotate.

[0027] Working process: The first motor 21 drives the first rotating block 22 to rotate, controls the first slider 24 to move towards the first chute 41, the clamping plate 25 is pulled and rotated, the diameter of the circle formed by the upper end increases, the slewing bearing to be tested is placed on the clamping plate 25, the outer ring of the slewing bearing contacts the clamping plate 25, the first motor 21 works in reverse, drives the diameter of the upper end of the clamping plate 25 to decrease, the slewing bearing continuously moves upward until the upper limit plate 252 buckles the upper end of the outer ring of the slewing bearing, the clamping plate 25 cannot rotate, and the outer ring of the slewing bearing is fixed. At this time, the slewing bearing is sleeved outside the rotating assembly 3. The second motor 31 controls the second rotating block 32 to rotate, drives the second pull rod 33 to push the second slider 34 to move outside the second chute 351 until the contact end 341 abuts against the inner ring of the slewing bearing. The second motor 31 continues to rotate, a certain resistance is overcome between the annular rail 352 and the annular groove, the turntable 35 rotates, the contact end 341 abuts against the inner ring of the slewing bearing and rotates, and the measuring head 11 starts to measure.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A slewing bearing precision test tooling, comprising a test bench (1), characterized in that: On one side of the test bench (1), there is a fixed seat (4). A clamping component (2) is installed at the lower end of the fixed seat (4). The upper end of the clamping component (2) is movably connected to a rotating component (3). The clamping component (2) includes a first motor (21), a first rotating block (22), a first pull rod (23), a first slider (24), and a clamping plate (25). The output end of the first motor (21) is fixedly connected to the first rotating block (22). The end of the first rotating block (22) is hinged to the first pull rod (23). One end of the first pull rod (23) is hinged to the first slider (24). One end of the first slider (24) is hinged to the lower end of the clamping plate (25).

2. The slewing bearing precision test tooling according to claim 1, wherein: On one side of the test bench (1), there is a measuring head (11).

3. The slewing bearing precision testing tooling according to claim 1, wherein: On the lower surface of the fixed seat (4), a first sliding groove (41) distributed in a ring at equal intervals is provided. The first slider (24) is movably connected to the first sliding groove (41).

4. The slewing bearing precision test tooling according to claim 1, characterized in that: A limiting pull rod (42) is hinged to the outer wall of the fixed seat (4). A long waist groove (251) is formed on the clamping plate (25). One end of the limiting pull rod (42) is movably connected to the long waist groove (251). An upper limiting plate (252) is provided at the upper end of the clamping plate (25).

5. The slewing bearing precision testing tooling according to claim 1, characterized in that: The rotating component (3) includes a second motor (31), a second rotating block (32), a second pull rod (33), a second slider (34), and a turntable (35). The output end of the second motor (31) is fixedly connected to the second rotating block (32). The end of the second rotating block (32) is movably connected to one end of the second pull rod (33). The other end of the second pull rod (33) is movably connected to one end of the second slider (34). The turntable (35) is sleeved on the second slider (34).

6. The slewing bearing precision testing tooling according to claim 5, characterized in that: On the turntable (35), a second sliding groove (351) matching the second slider (34) is formed. An annular rail (352) movably connected to the fixed seat (4) is provided on the lower surface of the turntable (35).

7. The slewing bearing precision testing tooling according to claim 5, wherein: On the end of the second slider (34) far from the second pull rod (33), there is a contact end (341).

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