Coupler high-low temperature torsional fatigue test bench

Abstract

The utility model discloses a coupling high and low temperature torsional fatigue test bench, which comprises a mounting base, a fixed end support, a rotating assembly, a driving mechanism and at least one bearing end support, and the bearing end support and the fixed end support are arranged at intervals and detachably arranged on the mounting base. The rotating assembly is rotatably connected to the bearing end support, the rotating assembly is used for being connected to one end of a coupler, the fixed end support is used for being connected to the other end of the coupler, and the driving mechanism is connected to the rotating assembly and used for driving the rotating assembly to rotate within a certain angle. The device is used for testing different torsional strengths of couplings. And meanwhile, mounting and dismounting are very convenient and rapid, the overall weight is reduced, the size of the environmental box is greatly reduced, transportation and turnover are facilitated, and the practicability, adaptability and market competitiveness of the coupling high-low temperature torsional fatigue test bed are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a high-low temperature torsional fatigue test bench for a coupling. Background Art

[0002] Wind power generation refers to the conversion of wind kinetic energy into electrical energy, and is a new sustainable energy source. The coupling is used in the transmission system between the gearbox and the generator. Its main function is to transmit torque and compensate for centering deviation, protecting the gearbox and transmission system from the bending and thrust load caused by the rotor. Therefore, the coupling is a vital component in the wind power generation system and needs to undergo rigorous performance testing before it can be installed and used. In order to meet the performance test under certain temperature conditions, a coupling high and low temperature torsional fatigue test bench is required for testing.

[0003] However, the high and low temperature torsional fatigue test benches for couplings currently on the market are usually large and extremely heavy. They are inconvenient to transport and turn around when simulating torsional fatigue tests under different temperature conditions. At the same time, a larger environmental chamber is required to conduct torsional fatigue tests, which has certain limitations on the size of the environmental chamber. In addition, the assembly and disassembly process of the test benches currently on the market before and after the test is relatively cumbersome, and many parts need to be disassembled to achieve the purpose, resulting in low practicality, applicability and market competitiveness. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and the utility model provides a coupling high and low temperature torsional fatigue test bench.

[0005] The utility model is realized by the following technical solutions:

[0006] A high and low temperature torsional fatigue test bench for a coupling, comprising a mounting base, a fixed end bracket, a rotating assembly, a driving mechanism and at least one bearing end bracket, wherein the bearing end bracket and the fixed end bracket are arranged at intervals and are detachably mounted on the mounting base, the rotating assembly is rotatably connected to the bearing end bracket, and the rotating assembly is used to be connected to one end of the coupling, the fixed end bracket is used to be connected to the other end of the coupling, and the driving mechanism is connected to the rotating assembly and is used to drive the rotating assembly to rotate within a certain angle.

[0007] Preferably, the mounting base comprises a channel steel welded component frame, a cold-bent hollow steel section and a steel plate, the cold-bent hollow steel section is located in the channel steel welded component frame and is welded to the channel steel welded component frame, the steel plate is welded to the top surface of the channel steel welded component frame, and the driving mechanism, the fixed end bracket and the bearing end bracket are all mounted and connected to the steel plate.

[0008] Preferably, the mounting base further comprises a plurality of lifting rings, the steel plate is provided with a plurality of threaded holes, and the plurality of lifting rings are respectively threadedly connected in the threaded holes.

[0009] Preferably, the driving mechanism includes a rotating arm, a jack and a jack base, the bottom end of the jack base is connected to the mounting base, the jack is mounted and connected to the top of the jack base, one end of the rotating arm is connected to the rotating assembly, and the movable end of the jack is connected to the other end of the rotating arm and is used to drive the rotating arm to rotate within a certain angle.

[0010] Preferably, the rotating assembly includes a rotating shaft and a spline connecting flange, the rotating shaft is rotatably connected to the bearing end bracket, the rotating arm is connected to the outer circumferential surface of the rotating shaft, one side of the spline connecting flange is connected to the end of the rotating shaft, and one side of the spline connecting flange is connected to the coupling.

[0011] Preferably, the outer peripheral surface of the rotating shaft is provided with two spline grooves, and the rotating arm and the spline connecting flange are respectively mounted in cooperation with the two spline grooves.

[0012] Preferably, the installation height of the jack base and the jack is lower than the center height of the rotating assembly.

[0013] Preferably, the bearing end bracket includes a bearing seat bracket, a bearing seat and a bearing, the bottom end of the bearing seat bracket is installed and connected to the mounting base, the bearing seat is connected to the top end of the bearing seat bracket, the bearing is arranged in the bearing seat, and the bearing sleeve is arranged in the rotating component.

[0014] Preferably, the hole center of the bearing seat, the hole center of the bearing, the center of the rotating assembly and the center of the fixed end bracket are on the same axis.

[0015] Preferably, the bottom of the bearing end bracket has a first transverse oblong hole, and the first transverse oblong hole is connected to the mounting base through a fastener, so that the bearing end bracket can adjust the mounting position on the mounting base;

[0016] And / or, the bottom of the fixed end bracket has a second transverse oblong hole, and the second transverse oblong hole is connected to the mounting base through a fastener, so that the fixed end bracket can adjust the mounting position on the mounting base.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a coupling high and low temperature torsional fatigue test bench, in which a bearing end bracket and a fixed end bracket are arranged on a mounting base and are used for mounting a rotating assembly and a coupling, and a driving mechanism drives the rotating assembly and drives the coupling to rotate within a certain angle, so as to be used for testing different torsional strengths of the coupling; at the same time, the overall structure is simple, and installation and disassembly are very convenient and quick, so that the processing procedure is simple, the processing hours are reduced, the processing cost is greatly reduced, the overall weight is reduced, the volume of the environmental chamber is greatly reduced, and it is more conducive to transportation and turnover, which greatly improves the practicability, adaptability and market competitiveness of the coupling high and low temperature torsional fatigue test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a coupling high and low temperature torsional fatigue test bench according to an embodiment of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the mounting base of an embodiment of the utility model.

[0021] Figure 3 It is a schematic structural diagram of the rotating shaft of an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] Mounting Base 1

[0024] Channel steel welded frame 11

[0025] Cold-formed hollow steel 12

[0026] Steel Plate 13

[0027] Rings 14

[0028] Driving mechanism 2

[0029] Jack base 21

[0030] Jack 22

[0031] Rotating arm 23

[0032] Rotating component 3

[0033] Shaft 31

[0034] Spline groove 311

[0035] Spline connection flange 32

[0036] Bearing end bracket 4

[0037] Bearing bracket 41

[0038] Bearing seat 42

[0039] Bearing 43

[0040] First transverse oblong hole 44

[0041] Fixed end bracket 5

[0042] The second transverse oblong hole 51

[0043] Coupling 10 DETAILED DESCRIPTION

[0044] The following descriptions of the embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment discloses a high and low temperature torsional fatigue test bench for a coupling, which includes a mounting base 1, a driving mechanism 2, a rotating component 3, a fixed end bracket 5 and at least one bearing end bracket 4, the bearing end bracket 4 and the fixed end bracket 5 are arranged at intervals and are detachably mounted on the mounting base 1, the rotating component 3 is rotatably connected to the bearing end bracket 4, and the rotating component 3 is used to be connected to one end of the coupling 10, the fixed end bracket 5 is used to be connected to the other end of the coupling 10, and the driving mechanism 2 is connected to the rotating component 3 and is used to drive the rotating component 3 to rotate within a certain angle.

[0046] The bearing end bracket 4 and the fixed end bracket 5 are both arranged on the mounting base 1 and are used to install the rotating component 3 and the coupling 10, and the bearing end bracket 4 and the fixed end bracket 5 are detachably connected to the mounting base 1; the driving mechanism 2 is used to provide driving force, and the rotating component 3 is driven by the driving mechanism 2 and the coupling 10 is driven to rotate within a certain angle, so as to be used to test the different torsional strengths of the coupling 10; at the same time, the overall structure is simple, and the installation and disassembly are very convenient and fast, the processing procedure is simple, the processing hours are reduced, the processing cost is greatly reduced, and the overall weight is reduced, and the volume of the environmental chamber is greatly reduced. It is suitable for testing under different occasions and conditions, and is more conducive to transportation and turnover, which greatly improves the practicality, adaptability and market competitiveness of the high and low temperature torsional fatigue test bench of the coupling.

[0047] The mounting base 1 includes a channel steel welded component frame 11, a cold-bent hollow steel 12 and a steel plate 13. The cold-bent hollow steel 12 is located in the channel steel welded component frame 11 and is welded to the channel steel welded component frame 11. The steel plate 13 is welded to the top surface of the channel steel welded component frame 11. The driving mechanism 2, the fixed end bracket 5 and the bearing end bracket 4 are all installed and connected to the steel plate 13.

[0048] Specifically, in this embodiment, the channel steel welded part frame 11 is welded from a plurality of standard parts of channel steels, two cold-bent hollow steel sections 12 are welded to the channel steel welded part frame 11, the channel steel welded part frame 11 is welded to the upper steel plate 13, the driving mechanism 2, the fixed end bracket 5 and the bearing end bracket 4 are all installed and connected to the steel plate 13, and the installation base 1 is used to play a supporting role, withstand the impact load of the driving mechanism 2 when in use, provide reliable support for the high and low temperature torsional fatigue test bench of the coupling, ensure stable operation, and ensure that the high and low temperature torsional fatigue test bench of the coupling can successfully complete the test.

[0049] The mounting base 1 also includes a plurality of lifting rings 14, and the steel plate 13 has a plurality of threaded holes, and the plurality of lifting rings 14 are respectively threadedly connected in the threaded holes. The lifting rings 14 and the steel plate 13 are threadedly connected, so that the lifting rings 14 are easy to install and disassemble in the threaded holes; at the same time, the lifting rings 14 are used for lifting, so that the movement and transportation of the high and low temperature torsional fatigue test bench of the coupling are more convenient, and it is suitable for testing under different occasions and conditions. Among them, the number of the lifting rings 14 is four, and the four lifting rings 14 are respectively distributed in the four corners of the steel plate 13. The mounting base 1 has a forklift hole through the cold-bent hollow steel 12, so as to facilitate transportation.

[0050] Among them, the driving mechanism 2, the fixed end bracket 5 and the bearing end bracket 4 are all detachably connected to the steel plate 13. The driving mechanism 2, the fixed end bracket 5 and the bearing end bracket 4 can be installed and connected to the threaded holes on the steel plate 13 by screws, so that the driving mechanism 2, the fixed end bracket 5 and the bearing end bracket 4 are installed and fixed on the mounting base 1, so that the processing procedure of the high and low temperature torsional fatigue test bench of the coupling is simple, the processing hours are reduced, and the processing cost is greatly reduced. On the other hand, the overall weight is reduced, and the volume of the environmental chamber is greatly reduced. It is suitable for testing under different occasions and conditions, and is more conducive to transportation and turnover, which greatly improves the practicality, adaptability and market competitiveness of the high and low temperature torsional fatigue test bench of the coupling.

[0051] The driving mechanism 2 includes a rotating arm 23, a jack 22 and a jack base 21. The bottom end of the jack base 21 is connected to the mounting base 1. The jack 22 is installed and connected to the top of the jack base 21. One end of the rotating arm 23 is connected to the rotating assembly 3. The movable end of the jack 22 is connected to the other end of the rotating arm 23 and is used to drive the rotating arm 23 to rotate within a certain angle. The jack 22 is used to provide a driving force to make the rotating arm 23 move up and down, drive the rotating arm 23 to rotate within a certain angle and drive the rotating assembly 3 to rotate within a certain angle, so as to test the different torsional strengths of the coupling 10. Specifically, the jack base 21 is fixed to the steel plate 13 by means of hexagon socket bolts, and the top of the jack base 21 may have a groove, and the jack 22 is placed in the groove, which not only allows the drive mechanism 2 to have no relative displacement during operation and ensures stability and reliability during operation, but also controls the magnitude of the torsional force within a certain range during the test by adjusting the amplitude of the lifting and lowering of the jack 22, and can be used to test different torsional strengths of the coupling 10, making it easier to meet the test conditions.

[0052] The rotating assembly 3 includes a rotating shaft 31 and a spline connection flange 32. The rotating shaft 31 is rotatably connected to the bearing end bracket 4. The rotating arm 23 is connected to the outer circumferential surface of the rotating shaft 31. One side of the spline connection flange 32 is connected to the end of the rotating shaft 31. One side of the spline connection flange 32 is connected to the coupling 10.

[0053] Specifically, when the coupling high and low temperature torsional fatigue test bench is actually used, the coupling high and low temperature torsional fatigue test bench is first placed in an environmental chamber, and the jack 22 is lifted and retracted to provide power to rotate the rotating arm 23 within a certain angle, and the rotating arm 23 drives the rotating shaft 31 to transmit the torsional force, thereby realizing the rotation of the rotating shaft 31. One end of the rotating shaft 31 is installed in cooperation with the spline connection flange 32, and the spline connection flange 32 is fixed to one end of the coupling 10. The other end of the coupling 10 is fixedly connected to the fixed end bracket 5, and the bottom of the fixed end bracket 5 is fixedly connected to the steel plate 13 of the mounting base 1. When the rotating shaft 31 rotates, the spline connection flange 32 is driven to rotate together, and the torsional force is transmitted to the coupling 10 to perform a torsional fatigue test. The lifting of the jack 22 transmits power to the rotating arm 23, and the rotating arm 23 drives the rotating shaft 31 to rotate. The rotating shaft 31 cooperates with the spline connection flange 32 to transmit the torsional force to the coupling 10; the reduction of the jack 22 keeps the jack 22 in an unloaded state. Since the strength of the coupling 10 will automatically return to the state before loading, the spline connection flange 32 drives the rotating shaft 31, and the rotating shaft 31 drives the rotating arm 23, and the rotating arm 23 presses the jack 22 downward, thereby realizing the cycle and achieving the purpose of the torsional fatigue test.

[0054] The outer circumference of the rotating shaft 31 has two spline grooves 311, and the rotating arm 23 and the spline connection flange 32 are respectively installed in cooperation with the two spline grooves 311. The spline groove 311 on the rotating shaft 31 is installed in cooperation with the rotating arm 23, and the other end of the rotating shaft 31 is installed in cooperation with the spline connection flange 32 through the spline groove 311. The rotating shaft 31, the rotating arm 23, and the spline connection flange 32 are all processed with spline grooves 311 to be installed in cooperation to transmit torque. High stability is achieved, and at the same time, installation and disassembly are very convenient, and the structure is simple and easy to process and manufacture.

[0055] The bearing end bracket 4 includes a bearing seat bracket 41, a bearing seat 42 and a bearing 43. The bottom end of the bearing seat bracket 41 is mounted and connected to the mounting base 1, the bearing seat 42 is connected to the top end of the bearing seat bracket 41, the bearing 43 is arranged in the bearing seat 42, and the bearing 43 is sleeved on the rotating component 3. The bearing seat bracket 41 is mounted and connected to the steel plate 13, so that it is convenient to install and connect the bearing seat 42 to the top end of the bearing seat bracket 41. By installing the bearing 43 in the bearing seat 42, the bearing 43 has high stability when in use. By sleeved on the rotating component 3, the stable rotation of the rotating component 3 is realized.

[0056] Among them, the bearing seat bracket 41 and the steel plate 13, the bearing seat bracket 41 and the bearing seat 42, and the fixed end bracket 5 and the steel plate 13 are fixedly installed with hexagonal bolts, spring washers, and flat washers. The spline connection flange 32 and the coupling 10 are fixedly installed with hexagonal bolts and flat washers. The installation and disassembly are very convenient and fast, the processing procedures are simple, the processing hours are reduced, the processing costs are greatly reduced, and the overall weight is reduced. The volume of the environmental chamber is greatly reduced, which is suitable for testing under different occasions and conditions, and is more conducive to transportation and turnover, which greatly improves the practicality, adaptability and market competitiveness of the coupling high and low temperature torsional fatigue test bench.

[0057] In this embodiment, there are two bearing-end brackets 4 , which are spaced apart on the mounting base 1 , and both ends of the rotating shaft 31 are rotatably connected to the two bearing-end brackets 4 , thereby realizing stable rotation of the rotating shaft 31 .

[0058] Among them, the bearing 43, the rotating arm 23 and the spline connection flange 32 are installed through a stepped shaft to reduce the processing surface during the matching process. At the same time, the inner ring of the bearing 43 and the rotating component 3 are matched to make the installation firm and reliable. On the other hand, threaded holes are left at both ends of the shaft to facilitate the processing and installation of the shaft.

[0059] The bottom of the bearing end bracket 4 has a first transverse oblong hole 44, which is connected to the mounting base 1 through a fastener, so that the bearing end bracket 4 can adjust the mounting position on the mounting base 1. The first transverse oblong hole 44 is set on the bearing seat bracket 41, and the fastener will pass through the first transverse oblong hole 44 and be installed and connected to the mounting base 1, and the fastener is pressed against the top surface of the bearing seat bracket 41, so that the bearing seat bracket 41 is installed and connected to the mounting base 1 through the first transverse oblong hole 44, so that the bearing seat bracket 41 can adjust the mounting position on the mounting base 1. Therefore, the axial and longitudinal clearances can be adjusted to meet the actual installation.

[0060] The bottom of the fixed end bracket 5 has a second transverse oblong hole 51, and the second transverse oblong hole 51 is connected to the mounting base 1 through a fastener, so that the fixed end bracket 5 can adjust the installation position on the mounting base 1. The second transverse oblong hole 51 is set at the bottom of the fixed end bracket 5, and the fastener will pass through the second transverse oblong hole 51 and be installed and connected to the mounting base 1, and the fastener is pressed against the fixed end bracket 5, so that the fixed end bracket 5 is installed and connected to the mounting base 1 through the second transverse oblong hole 51, so that the fixed end bracket 5 can adjust the installation position on the mounting base 1. Therefore, the axial and longitudinal clearances can be adjusted to meet the actual installation.

[0061] In this embodiment, the first transverse oblong hole 44 and the second transverse oblong hole 51 are both waist-shaped holes, and the first transverse oblong hole 44 and the second transverse oblong hole 51 are both arranged to extend along the axial direction of the rotating component 3, so as to adjust the axial direction to meet the actual installation. At the same time, the longitudinal gap between the bearing end bracket 4 and the fixed end bracket 5 and the steel plate 13 is adjusted to meet the actual installation.

[0062] The hole center of the bearing seat 42, the hole center of the bearing 43, the center of the rotating assembly 3 and the center of the fixed end bracket 5 are on the same axis. The bottom of the bearing end bracket 4 and the fixed end bracket 5 are respectively provided with the first transverse oblong hole 44 and the second transverse oblong hole 51, and the axial and longitudinal clearances can be adjusted to meet the actual installation requirements, so that the hole centers of the two bearing seats 42, the hole centers of the bearing 43, the center of the rotating assembly 3 and the center of the fixed end bracket 5 are at the same height. After confirming the positions of the bearing end bracket 4 and the fixed end bracket 5, they are fixed with bolts, and no alignment correction is required during the subsequent assembly and disassembly process, which reduces many links in the subsequent replacement process and effectively improves work efficiency. At the same time, the fixed end bracket 5 is then fixedly installed with the coupling 10, and the coupling 10 is fixedly installed with the spline connection flange 32 to achieve different torsional strengths of the testing coupling 10, and the stability is higher. Preferably, the installation height of the jack base 21 and the jack 22 is lower than the center height of the rotating assembly 3.

[0063] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A coupling high and low temperature torsional fatigue test bench, characterized in that: It includes a mounting base, a fixed end bracket, a rotating assembly, a driving mechanism and at least one bearing end bracket, wherein the bearing end bracket and the fixed end bracket are spaced apart and detachably mounted on the mounting base, the rotating assembly is rotatably connected to the bearing end bracket, and the rotating assembly is used to be connected to one end of a coupling, the fixed end bracket is used to be connected to the other end of the coupling, and the driving mechanism is connected to the rotating assembly and is used to drive the rotating assembly to rotate within a certain angle.

2. The coupling high and low temperature torsional fatigue test bench according to claim 1, characterized in that: The mounting base includes a channel steel welded component frame, a cold-bent hollow steel section and a steel plate. The cold-bent hollow steel section is located in the channel steel welded component frame and is welded to the channel steel welded component frame. The steel plate is welded to the top surface of the channel steel welded component frame. The driving mechanism, the fixed end bracket and the bearing end bracket are all mounted and connected to the steel plate.

3. The coupling high and low temperature torsional fatigue test bench according to claim 2, characterized in that: The mounting base also includes a plurality of lifting rings, the steel plate is provided with a plurality of threaded holes, and the plurality of lifting rings are respectively threadedly connected in the threaded holes.

4. The coupling high and low temperature torsional fatigue test bench according to claim 1, characterized in that: The driving mechanism includes a rotating arm, a jack and a jack base, the bottom end of the jack base is connected to the mounting base, the jack is mounted and connected to the top of the jack base, one end of the rotating arm is connected to the rotating assembly, and the movable end of the jack is connected to the other end of the rotating arm and is used to drive the rotating arm to rotate within a certain angle.

5. The coupling high and low temperature torsional fatigue test bench according to claim 4, characterized in that: The rotating assembly includes a rotating shaft and a spline connection flange, the rotating shaft is rotatably connected to the bearing end bracket, the rotating arm is connected to the outer circumferential surface of the rotating shaft, one side of the spline connection flange is connected to the end of the rotating shaft, and one side of the spline connection flange is connected to the coupling.

6. The coupling high and low temperature torsional fatigue test bench according to claim 5, characterized in that: The outer peripheral surface of the rotating shaft is provided with two spline grooves, and the rotating arm and the spline connecting flange are respectively installed in cooperation with the two spline grooves.

7. The coupling high and low temperature torsional fatigue test bench according to claim 4, characterized in that: The installation height of the jack base and the jack is lower than the center height of the rotating assembly.

8. The coupling high and low temperature torsional fatigue test bench according to claim 1, characterized in that: The bearing end bracket includes a bearing seat bracket, a bearing seat and a bearing, the bottom end of the bearing seat bracket is installed and connected to the mounting base, the bearing seat is connected to the top end of the bearing seat bracket, the bearing is arranged in the bearing seat, and the bearing sleeve is arranged in the rotating component.

9. The coupling high and low temperature torsional fatigue test bench according to claim 8, characterized in that: The hole center of the bearing seat, the hole center of the bearing, the center of the rotating component and the center of the fixed end bracket are on the same axis.

10. The coupling high and low temperature torsional fatigue test bench according to claim 1, characterized in that: The bottom of the bearing end bracket has a first transverse oblong hole, and the first transverse oblong hole is connected to the mounting base through a fastener, so that the bearing end bracket can adjust the mounting position on the mounting base; And / or, the bottom of the fixed end bracket has a second transverse oblong hole, and the second transverse oblong hole is connected to the mounting base through a fastener, so that the fixed end bracket can adjust the mounting position on the mounting base.

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