Slewing bearing performance test platform and test method

Abstract

The invention belongs to the technical field of mechanical part testing, and particularly relates to a slewing bearing performance testing platform which comprises an installation base, a top loading end cover, a tool assembly, a driving part, an axial loading device and a radial loading device. The top loading end cover is mounted on the mounting base and is connected with the top loading end cover through a mounting flange, the driving part is mounted on the side surface of the mounting base, the axial loading device is mounted between the mounting base and the top loading end cover, and the radial loading device is mounted at the top end of a side frame of the mounting base. According to the invention, the comprehensive performance of the slewing bearing can be tested, and the comprehensive performance of various slewing bearings can be tested by adopting a combined action mode of the radial loading device and the axial loading device and utilizing the mounting flange cylinder and the mounting plate which are reserved with different apertures and different distribution rules.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical component testing, and in particular to a slewing bearing performance testing platform and a testing method. Background Art

[0002] A slewing bearing is a key component used to support rotating equipment. It reduces friction and wear, ensuring smooth rotation and operation, thereby extending the equipment's service life and improving its efficiency. Currently, slewing bearings are widely used in various fields, including industrial production, construction engineering, and aerospace, becoming a vital component of various large-scale rotating equipment. The performance of slewing bearings is directly related to the safety, reliability, and service life of the equipment, making it extremely important to test and evaluate their performance.

[0003] Some slewing bearing test platforms currently on the market have the problem of being unable to test combined loads. This means that they cannot test the situation where multiple loads of different directions and intensities act on the slewing bearing at the same time. In this case, the test platform may not be able to truly simulate the load conditions that the slewing bearing faces in the actual working environment, and thus cannot fully evaluate the performance and stability of the slewing bearing.

[0004] Therefore, we proposed a slewing bearing performance testing platform and testing method to solve the above problems. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a slewing bearing performance testing platform and testing method, which solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] A slewing bearing performance test platform includes a mounting base, a top loading end cover, a tooling assembly, a drive unit, an axial loading device, and a radial loading device. The tooling assembly is used to mount the slewing bearing to be tested and the main drive slewing bearing, and is connected to the top loading end cover via a mounting flange. The drive unit is mounted on the side of the mounting base, the axial loading device is mounted between the mounting base and the top loading end cover, and the radial loading device is mounted on the top of the side frame of the mounting base.

[0010] Furthermore, the tooling assembly includes an upper mounting flange cylinder and a lower mounting plate, wherein:

[0011] The upper mounting flange is connected to the top loading end cover and forms a detachable connection with the inner ring of the slewing bearing to be tested. The upper mounting flange is provided with threaded holes of different diameters and distribution patterns to adapt to slewing bearings of different models.

[0012] The lower mounting plate is connected to the mounting base by bolts, and forms a detachable connection with the outer ring of the measured slewing bearing, and forms a detachable connection with the outer ring of the main drive slewing bearing. The lower mounting plate is provided with threaded holes of different diameters and different distribution patterns to adapt to different models of slewing bearings.

[0013] Furthermore, the inner ring of the main drive slewing bearing is connected to the mounting base through bolts.

[0014] Furthermore, the driving unit includes a protective panel, a hydraulic motor, a first coupling, a torque tachometer, a second coupling, a reducer and a gear, wherein:

[0015] The above-mentioned driving device is protected in the protective enclosure. The hydraulic motor provides power for the driving part and is connected to the mounting base with bolts. The torque and speed meter are connected to the output shaft of the hydraulic motor through a first coupling and connected to the mounting base through bolts, and the torque and speed of the device are measured in real time. The input shaft of the reducer is connected to the torque and speed meter by a second coupling, and a gear is assembled on the output shaft of the reducer.

[0016] Furthermore, the gear is engaged with and drives the outer ring gear of the main drive slewing support.

[0017] Furthermore, the axial loading device includes a first hydraulic cylinder, a first oil cylinder mounting seat, a second hydraulic cylinder, and a second oil cylinder mounting seat, wherein:

[0018] The lower end of the first hydraulic cylinder mounting base is fixed to the upper surface of the right by bolts, and the upper end is connected to the cylinder barrel of the first hydraulic cylinder by a pin, and the piston rod of the first hydraulic cylinder is connected to the top loading end cover by a pin;

[0019] The lower end of the second oil cylinder mounting seat is fixed to the right upper surface by bolts, and the upper end is connected to the cylinder barrel of the second hydraulic cylinder through a pin, and the piston rod of the second hydraulic cylinder is connected to the top loading end cover through a pin.

[0020] Furthermore, the radial loading device includes a third hydraulic cylinder and a third oil cylinder mounting bracket. The cylinder barrel of the third hydraulic cylinder is connected to the third oil cylinder mounting bracket and is mounted on the right side bracket by bolts.

[0021] (3) Beneficial effects

[0022] Compared with the prior art, the present invention provides a slewing bearing performance testing platform and testing method, which has the following beneficial effects:

[0023] The present invention can test the comprehensive performance of the slewing bearing. Due to the joint action of the radial loading device and the axial loading device, the present invention can test the performance of the slewing bearing under different load combinations. A torque and speed meter is provided in the driving part, and pressure sensors and vibration sensors are arranged around the slewing bearing. The performance of the slewing bearing under different loads can be dynamically detected in real time. The mounting flange cylinder and mounting plate with different apertures and different distribution patterns are used to test the comprehensive performance of various slewing bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the driving part structure of the present invention;

[0026] Figure 3 A schematic diagram of a single radial load according to the present invention;

[0027] Figure 4 It is a schematic diagram of a single axial loading of the present invention;

[0028] Figure 5 A schematic diagram of a single overturning moment loading according to the present invention;

[0029] Figure 6 A schematic diagram of the combined radial and overturning loading of the present invention;

[0030] Figure 7 It is a schematic diagram of the axial and overturning combined loading of the present invention;

[0031] Figure 8 It is a schematic diagram of the radial and axial combined loading of the present invention.

[0032] In the figure: 1: Mounting base, 2: Top loading end cover, 3-1: Upper mounting flange cylinder, 3-2: Lower mounting plate, 4: Slewing bearing under test, 5: Main drive slewing bearing, 6-1: Protective enclosure, 6-2: Hydraulic motor, 6-3: First coupling, 6-4: Torque tachometer, 6-5: Second coupling, 6-6: Reducer, 6-7: Gear, 7-1: First hydraulic cylinder, 7-2: First cylinder mounting base, 7-3: Second hydraulic cylinder, 7-4: Second cylinder mounting base, 8-1: Third hydraulic cylinder, 8-2: Third cylinder mounting base. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0034] Example

[0035] like Figure 1 As shown, a slewing bearing performance test platform proposed in one embodiment of the present invention includes a mounting base 1, a top loading end cover 2, a tooling assembly 3, a drive unit 6, an axial loading device, and a radial loading device 8. The tooling assembly 3 is used to install the slewing bearing 4 to be tested and the main drive slewing bearing 5, and is connected to the top loading end cover 2 through a mounting flange. The drive unit 6 is installed on the side of the mounting base 1, the axial loading device is installed between the mounting base 1 and the top loading end cover 2, and the radial loading device 8 is installed on the top of the side frame of the mounting base 1.

[0036] like Figure 1 As shown, in some embodiments, the tooling assembly 3 includes an upper mounting flange cylinder 3-1 and a lower mounting plate 3-2, wherein:

[0037] The upper mounting flange cylinder 3-1 is connected to the top loading end cover 2 and forms a detachable connection with the inner ring of the slewing bearing 4 to be tested. The upper mounting flange cylinder 3-1 is provided with threaded holes of different diameters and different distribution patterns to adapt to different types of slewing bearings.

[0038] The lower mounting plate 3-2 is connected to the mounting base 1 by bolts, and forms a detachable connection with the outer ring of the measured slewing bearing 4, and forms a detachable connection with the outer ring of the main drive slewing bearing 5. The lower mounting plate 3-2 is provided with threaded holes with different apertures and different distribution patterns to adapt to different models of slewing bearings.

[0039] like Figure 1 As shown, in some embodiments, the inner ring of the main drive slewing bearing 5 is connected to the mounting base 1 through bolts.

[0040] like Figure 1-2 As shown, in some embodiments, the driving unit 6 includes a protective panel 6-1, a hydraulic motor 6-2, a first coupling 6-3, a torque speed meter 6-4, a second coupling 6-5, a reducer 6-6 and a gear 6-7, wherein:

[0041] The above-mentioned driving device is protected in the protective enclosure 6-1. The hydraulic motor 6-2 provides power for the driving part and is connected to the mounting base 1 with bolts. The torque and speed meter 6-4 is connected to the output shaft of the hydraulic motor 6-2 through the first coupling 6-3, and is connected to the mounting base 1 through bolts, and the torque and speed of the device are measured in real time. The input shaft of the reducer 6-6 is connected to the torque and speed meter 6-4 by the second coupling 6-5, and the output shaft of the reducer 6-6 is equipped with a gear 6-7.

[0042] like Figure 1-2 As shown, in some embodiments, the gears 6 - 7 are engaged with and driven by the outer ring gear of the main drive slewing bearing 5 .

[0043] like Figure 1-2 As shown, in some embodiments, the axial loading device includes a first hydraulic cylinder 7-1, a first cylinder mounting seat 7-2, a second hydraulic cylinder 7-3, and a second cylinder mounting seat 7-4, wherein:

[0044] The lower end of the first oil cylinder mounting base 7-2 is fixed to the upper surface of the right 1 by bolts, and the upper end is connected to the cylinder barrel of the first hydraulic cylinder 7-1 by a pin, and the piston rod of the first hydraulic cylinder 7-1 is connected to the top loading end cover 2 by a pin;

[0045] The lower end of the second oil cylinder mounting seat 7-4 is fixed to the upper surface of the right 1 by bolts, and the upper end is connected to the cylinder barrel of the second hydraulic cylinder 7-3 by a pin, and the piston rod of the second hydraulic cylinder 7-3 is connected to the top loading end cover 2 by a pin.

[0046] like Figure 1-2 As shown, in some embodiments, the radial loading device 8 includes a third hydraulic cylinder 8-1 and a third cylinder mounting bracket 8-2, the cylinder barrel of the third hydraulic cylinder 8-1 is connected to the third cylinder mounting bracket 8-2, and is mounted on the right 1 side bracket by bolts.

[0047] Hydraulic motor 6-2 outputs speed and torque, which is then transmitted to reducer 6-6 via first coupling 6-3 and second coupling 6-5. Reducer 6-6 reduces speed, increases torque, and then transmits it to gear 6-7. Gear 6-7 drives the outer ring of main drive slewing bearing 5 and lower mounting plate 3-2 to rotate, thereby driving the slewing bearing 4 under test to operate.

[0048] The torque and speed meter 6 - 4 can test the speed and torque of the driving unit 6 , the main drive slewing bearing 5 , and the slewing bearing 4 to be tested in real time during operation.

[0049] A slewing bearing performance testing platform of the present invention utilizes a top loading end cap, a radial loading device and an axial loading device to apply combined loads such as radial force, axial force and overturning moment to the slewing bearing, thereby testing the performance of the slewing bearing under different loads.

[0050] By controlling the piston extension lengths of the first hydraulic cylinder 7-1, the second hydraulic cylinder 7-3 and the third hydraulic cylinder 7-4, loads of different sizes in different directions can be applied to the slewing bearing 4 under test. Different loading combinations composed of the three loads can test different performances of the slewing bearing during operation.

[0051] In a slewing bearing performance testing platform of the present invention, threaded holes with different diameters and distribution patterns are reserved in the upper mounting flange cylinder 3-1 and the lower mounting plate 3-2 of the tooling assembly 3, so that slewing bearings of different specifications can be installed for testing.

[0052] A test method for a slewing bearing performance test platform is as follows:

[0053] according to Figure 3 As shown in the loading diagram, the first hydraulic cylinder 7-1 extends to apply an upward axial force to the top-loading end cap 2, the second hydraulic cylinder 7-3 contracts to apply a downward axial force to the top-loading end cap 2, and the third hydraulic cylinder 8-1 extends to apply a radial force to the top-loading end cap 2. These two axial forces are equal in magnitude. The present invention uses a combination of these three loading methods to enable the top-loading end cap 2 to apply a single radial load to the slewing bearing 4 under test.

[0054] according to Figure 4 As shown in the loading diagram, the first hydraulic cylinder 7-1 contracts, applying a downward axial force to the top-loading end cap 2. The second hydraulic cylinder 7-3 contracts, also applying a downward axial force to the top-loading end cap 2. These two axial forces are equal in magnitude. By combining these two loading methods, the present invention enables the top-loading end cap 2 to apply a single axial load to the slewing bearing 4 under test.

[0055] according to Figure 5 As shown in the loading diagram, the first hydraulic cylinder 7-1 extends to apply an upward axial force to the top loading end cap 2, while the second hydraulic cylinder 7-3 contracts to apply an upward axial force to the top loading end cap 2. The two axial forces are equal in magnitude. By combining these two loading methods, the present invention enables the top loading end cap 2 to apply a single overturning load to the slewing bearing 4 under test.

[0056] according to Figure 6As shown in the loading diagram, the first hydraulic cylinder 7-1 contracts, applying a downward axial force to the top-loading end cap 2. The second hydraulic cylinder 7-3 extends, applying an upward axial force to the top-loading end cap 2. The third hydraulic cylinder 8-1 extends, applying a radial force to the top-loading end cap 2. These two axial forces are of equal magnitude. Through this combination of three loading methods, the present invention causes the top-loading end cap 2 to apply a combined radial force and overturning moment to the slewing bearing 4 under test.

[0057] according to Figure 7 As shown in the loading diagram, the first hydraulic cylinder 7-1 extends, applying an upward axial force to the top-loading end cap 2, while the second hydraulic cylinder 7-3 contracts, applying a downward axial force to the top-loading end cap 2. The two axial forces are of unequal magnitude. This combination of two loading mechanisms allows the top-loading end cap 2 to apply a combined load of axial force and overturning moment to the slewing bearing 4 under test.

[0058] according to Figure 8 As shown in the loading diagram, the first hydraulic cylinder 7-1 extends to apply an upward axial force to the top-loading end cap 2. The second hydraulic cylinder 7-3 extends to apply an upward axial force to the top-loading end cap 2. The third hydraulic cylinder 8-1 extends to apply a radial force to the top-loading end cap 2. These two axial forces are of equal magnitude. Through this combination of three loading methods, the present invention causes the top-loading end cap 2 to apply a combined load of axial force and overturning moment to the slewing bearing 4 under test.

[0059] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A slewing bearing performance testing platform, characterized by: The invention comprises a mounting base (1), a top loading end cover (2), a tool assembly (3), a driving unit (6), an axial loading device and a radial loading device (8); the tool assembly (3) is used to install a slewing bearing (4) to be tested and a main drive slewing bearing (5), and is connected to the top loading end cover (2) via a mounting flange; the driving unit (6) is mounted on the side of the mounting base (1); the axial loading device is mounted between the mounting base (1) and the top loading end cover (2); and the radial loading device (8) is mounted on the top of the side frame of the mounting base (1).

2. The slewing bearing performance testing platform according to claim 1, characterized in that: The tooling assembly (3) comprises an upper mounting flange cylinder (3-1) and a lower mounting plate (3-2), wherein: The upper mounting flange cylinder (3-1) is connected to the top loading end cover (2) and forms a detachable connection with the inner ring of the slewing bearing (4) to be measured, and the upper mounting flange cylinder (3-1) is provided with threaded holes of different diameters and different distribution patterns to adapt to slewing bearings of different models; The lower mounting plate (3-2) is connected to the mounting base (1) via bolts, and forms a detachable connection with the outer ring of the slewing bearing (4) to be measured, and forms a detachable connection with the outer ring of the main drive slewing bearing (5). The lower mounting plate (3-2) is provided with threaded holes of different diameters and different distribution patterns to adapt to slewing bearings of different models.

3. The slewing bearing performance testing platform according to claim 1, characterized in that: The inner ring of the main drive slewing bearing (5) is connected to the mounting base (1) via bolts.

4. The slewing bearing performance testing platform according to claim 1, characterized in that: The driving unit (6) includes a protective panel (6-1), a hydraulic motor (6-2), a first coupling (6-3), a torque and speed meter (6-4), a second coupling (6-5), a speed reducer (6-6) and a gear (6-7), wherein: The driving device is protected in the protective enclosure (6-1), the hydraulic motor (6-2) provides power for the driving part and is connected to the mounting base (1) by bolts, the torque and speed meter (6-4) is connected to the output shaft of the hydraulic motor (6-2) through a first coupling (6-3), and is connected to the mounting base (1) by bolts, and measures the torque and speed of the device in real time, the input shaft of the reducer (6-6) is connected to the torque and speed meter (6-4) by a second coupling (6-5), and a gear (6-7) is assembled on the output shaft of the reducer (6-6).

5. The slewing bearing performance testing platform according to claim 4, characterized in that: The gear (6-7) meshes with and drives the outer ring gear of the main drive slewing bearing (5).

6. The slewing bearing performance testing platform according to claim 1 is characterized in that: The axial loading device comprises a first hydraulic cylinder (7-1), a first oil cylinder mounting seat (7-2), a second hydraulic cylinder (7-3), and a second oil cylinder mounting seat (7-4), wherein: The lower end of the first oil cylinder mounting seat (7-2) is fixed to the upper surface of the right (1) by bolts, and the upper end is connected to the cylinder barrel of the first hydraulic cylinder (7-1) by a pin, and the piston rod of the first hydraulic cylinder (7-1) is connected to the top loading end cover (2) by a pin; The lower end of the second oil cylinder mounting seat (7-4) is fixed to the upper surface of the right (1) by bolts, and the upper end is connected to the cylinder barrel of the second hydraulic cylinder (7-3) through a pin, and the piston rod of the second hydraulic cylinder (7-3) is connected to the top loading end cover (2) through a pin.

7. The slewing bearing performance testing platform according to claim 1 is characterized in that: The radial loading device (8) comprises a third hydraulic cylinder (8-1) and a third oil cylinder mounting frame (8-2); the cylinder barrel of the third hydraulic cylinder (8-1) is connected to the third oil cylinder mounting frame (8-2) and is mounted on the right (1) side bracket by bolts.

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