Multifunctional gear testing device

Abstract

A multifunctional gear test device relates to the transmission part test field. The invention solves the problems that the existing gear test bench cannot quickly, dynamically and statically adjust the axis angle, the axial position, the radial position and other axis positions at high precision, and cannot quickly adapt to series gears with different center distances and crossed axis angles at low cost. By combining the six-degree-of-freedom platform, high-precision dynamic and static high-precision adjustment of axis angles, axial positions, radial positions and other axis positions can be realized, so that gear test requirements of different center distance and crossed axis angle series can be quickly met at low cost; a flexible environment simulation test cabin is arranged between the upper mounting surface and the lower mounting surface of the six-degree-of-freedom attitude adjusting platform, so that sealing in the gear lubrication test process is realized, and environment simulation test functions of high and low temperatures, salt mist and the like can be integrated; torque measurement is combined, and tests of torsional fatigue, dynamic vibration NVH and the like can be carried out through control of loading torque and dynamic change control of an axis. The device is used for gear testing.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, and in particular to a multifunctional gear testing device, which is used for fixing a coal mining machine cylinder, thereby facilitating the gear seat welding of the cylinder of the coal mining machine drum. Background Art

[0002] Gear transmission is a common mechanical transmission method, which transmits power and motion through gear meshing pairs. It has the characteristics of precise transmission ratio, high efficiency, wide application range, large load-bearing capacity, and long life. There are many types of gears, and common types include spur gears, helical gears, bevel gears, worm gears, etc. In order to ensure that the gears can work smoothly and achieve the expected performance, it is often necessary to conduct various tests on the gears in the research and development, production, and inspection links.

[0003] Common tests on gears include static tests and dynamic tests. Static tests mainly include tooth static stiffness tests, etc.; dynamic tests mainly include dynamic fatigue endurance tests, wear fatigue tests, efficiency tests, NVH vibration tests, impact tests, environmental adaptability tests, contact meshing tests, etc.

[0004] At present, common gear test devices can often meet the conventional test requirements such as fatigue endurance test and wear fatigue test, but often a form of gear often requires a special machine for testing, and there are few multifunctional test devices that are compatible with multiple gear transmission forms and test items. At present, many scholars and manufacturers have designed and developed a variety of gear test benches. Among them, the "A spiral bevel gear test device for dynamic and quasi-static tests" of Chinese patent number CN109738184A published on May 10, 2019 can perform static transmission error, tooth surface contact mark, vibration characteristics, tooth root stress and other tests on spiral bevel gears. The test device applies the mechanical power closure principle and adopts a modular design, but the mechanical power closure design principle requires that the mechanical transmission system needs to be connected into a closed loop. Therefore, the device can only adapt to single-angle bevel gear tests and cannot have good adaptability to variable-angle bevel gears and cylindrical gears.

[0005] Chinese patent number CN106525419A published on March 22, 2017, "A comprehensive test bench for high-power cylindrical gears with steplessly adjustable center distance", provides a test bench with adjustable center distance for high-power cylindrical gears. The test bench also combines the principle of mechanical power closure and adapts to gears with different center distances by configuring a bearing seat slide and a companion test gear that is the same as the test gear. When testing different test pieces, different test boxes need to be equipped, and the test switching cost is relatively high. In addition, the adjustment of the gear is limited to the adjustment of the center distance, and adjustments such as axis deflection cannot be made.

[0006] In summary, the existing gear test bench cannot quickly and accurately adjust the axis angle, axial, radial and other axis positions dynamically and statically, and cannot quickly and cost-effectively adapt to the problems of gear series with different center distances and axis angles. Summary of the invention

[0007] The purpose of the present invention is to solve the problem that the existing gear test bench cannot quickly and accurately adjust the axis angle, axial, radial and other axis positions dynamically and statically, and cannot adapt to different center distances and axis angle series gears at low cost and quickly, and thus provide a multifunctional gear test device. By controlling the loading torque and the dynamic change control of the axis, it can realize torsional fatigue, dynamic vibration NVH and other tests, and has an environmental simulation test chamber, which can meet the sealing of gear lubrication test, and can integrate high and low temperature, salt spray and other environmental simulation test functions.

[0008] The present invention is:

[0009] A multifunctional gear testing device comprises an energy feedback loading transmission system, a six-degree-of-freedom platform and an environmental simulation test chamber. The energy feedback loading transmission system and the environmental simulation test chamber are mounted on the six-degree-of-freedom platform, which is the supporting basis of the whole device. The six-degree-of-freedom platform comprises an upper platform, a lower platform and a plurality of attitude adjustment actuators. The upper platform and the lower platform are arranged in parallel up and down and connected by a plurality of attitude adjustment actuators. The axis angle, axial direction, radial direction and other axis positions of the test gear pair in the energy feedback loading transmission system are realized by adjusting the plurality of attitude adjustment actuators.

[0010] Furthermore, the energy feedback loading transmission system includes a driving device, an input transmission box, a coupling, a test gear pair, a torque meter, an output transmission box and a loading device. The driving device is installed on the upper platform, the output end of the driving device is connected to the input end of the input transmission box, the output end of the input transmission box is connected to the upper part of the driving shaft through the coupling, the upper part of the driven shaft and the lower part of the driving shaft are connected through the test gear pair, the lower part of the driven shaft is connected to the output transmission box through the coupling, the torque meter is installed below the coupling at the lower part of the driven shaft, and the loading device is connected to the output transmission box to achieve loading.

[0011] Furthermore, the energy feedback loading transmission system also includes a bearing seat, and the upper part of the driving shaft is connected to the upper platform through the bearing seat, and the lower part of the driven shaft is connected to the lower platform through the bearing seat.

[0012] Furthermore, the energy feedback loading transmission system also includes a gear quick installation mechanism, and the upper part of the driving shaft and the lower part of the driven shaft are connected to the test gear pair through the gear quick installation mechanism.

[0013] Preferably, the lower platform has a hollow table-shaped column.

[0014] Preferably, the environmental simulation test chamber is a chamber with a flexible and deformable structure.

[0015] Furthermore, the environmental simulation test chamber is sealed and installed between the upper platform and the lower platform.

[0016] Furthermore, the number of the plurality of posture adjustment actuators is 6, two of which form a pair, the upper end and the lower end of each pair of posture adjustment actuators are hinged to the upper platform and the lower platform, and each posture adjustment actuator is retractable.

[0017] Furthermore, the upper parts of each pair of posture adjustment actuators are arranged opposite to and close to each other, and the lower parts of each pair of posture adjustment actuators are arranged toward both sides, so that a triangle is formed between each pair of posture adjustment actuators and the lower platform.

[0018] Preferably, the driving device is a motor.

[0019] Compared with the prior art, the present invention has the following effects:

[0020] 1. The present invention combines the energy feedback loading transmission system with the six-degree-of-freedom attitude adjustment platform to achieve static high-precision adjustment of the axis angle, axial, radial and other axis positions. It can not only perform dynamic contact, dynamic NVH and other tests; it can also achieve fast and low-cost easy adaptation to gears with different center distances and axis angle series.

[0021] 2. The present invention combines the energy feedback loading transmission system with the six-degree-of-freedom posture adjustment platform to achieve dynamic and high-precision adjustment of axis position deviations such as axis angle, axial direction, and radial direction.

[0022] 3. The present invention can simulate the torque and speed fluctuations of the gear in use by controlling the torque and speed of the loader in the energy feedback loading device, and can perform tests such as torsional fatigue. The torque meter is configured to test the influence of dynamic meshing deviation on torque fluctuation with high precision, and can test the dynamic vibration NVH characteristics of the gear.

[0023] 4. A flexible environmental simulation test cabin is arranged between the upper and lower mounting surfaces of the six-degree-of-freedom attitude adjustment platform of the present invention to achieve sealing of the gear lubrication test, and can integrate high and low temperature, salt spray and other environmental simulation test functions, so as to realize the environmental adaptability performance test of the gear;

[0024] Therefore, the multifunctional gear testing device of the present invention, by combining with a six-degree-of-freedom platform, can realize high-precision dynamic and static high-precision adjustment of the axis angle, axial direction, radial direction and other axis positions, so as to adapt to the gear testing requirements of different center distances and axis angle series quickly and at low cost; and a flexible environmental simulation test cabin is set between the upper and lower mounting surfaces of the six-degree-of-freedom attitude adjustment platform, so as to realize the sealing of the gear lubrication test process, and can integrate high and low temperature, salt spray and other environmental simulation test functions; combined with torque measurement, by controlling the loading torque and the dynamic change control of the axis, torsional fatigue, dynamic vibration NVH and other tests can be carried out; at the same time, the energy feedback loading principle can ensure long-term stable, efficient and reliable operation, and meet the traditional fatigue endurance test and wear fatigue test functions of gears.

[0025] The multifunctional gear testing device of the present invention has a simple principle, a novel structure, rich functions and reliable performance, meets various test requirements of various types of gears, and makes up for the shortcomings of most current gear testing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a top view of a multifunctional gear testing device of the present invention, used to illustrate the coordinate relationship of posture adjustment;

[0028] Figure 3 yes Figure 2 The cross-sectional view along AA is used to illustrate the detailed composition and relative position relationship of the present invention;

[0029] Figure 4 It is a cross-sectional view of an angle shafting test transmission system of a multifunctional gear testing device of the present invention, and is used to illustrate the shaft angle adjustment function.

[0030] Among them: 10. Energy feedback loading transmission system, 20. Six-degree-of-freedom platform, 30. Environmental simulation test chamber,

[0031] 11. Driving device, 12. Input transmission box, 13. Coupling, 14. Bearing seat, 15. Test gear pair, 16. Gear quick installation mechanism, 17. Torque meter, 18. Output transmission box, 19. Loading device, 21. Upper platform, 22. Posture adjustment actuator, 23. Lower platform. DETAILED DESCRIPTION

[0032] Specific implementation method 1: Combination Figures 1 to 4The present embodiment is described. The present embodiment includes an energy feedback loading transmission system 10, a six-degree-of-freedom platform 20 and an environmental simulation test chamber 30. The energy feedback loading transmission system 10 and the environmental simulation test chamber 30 are installed on the six-degree-of-freedom platform 20, and the six-degree-of-freedom platform 20 is the supporting basis of the whole device; the six-degree-of-freedom platform 20 includes an upper platform 21, a lower platform 23 and a plurality of posture adjustment actuators 22. The upper platform 21 and the lower platform 23 are arranged in parallel up and down and are connected by a plurality of posture adjustment actuators 22. The adjustment of the plurality of posture adjustment actuators 22 realizes the axis angle, axial direction, radial direction and other axis positions of the test gear pair 15 in the energy feedback loading transmission system 10.

[0033] The multifunctional gear test device of the present invention can realize high-precision dynamic and static high-precision adjustment of the axis angle, axial direction, radial direction and other axis positions of the test gear pair 15 by combining with the six-degree-of-freedom platform 20, so as to quickly adapt to the gear test requirements of different center distances and axis angle series at low cost; and an environmental simulation test cabin 30 is set between the upper and lower mounting surfaces of the six-degree-of-freedom attitude adjustment platform 20, so as to realize the sealing of the gear lubrication test process of the test gear pair 15, and can integrate high and low temperature, salt spray and other environmental simulation test functions; combined with torque measurement, through the control of loading torque and dynamic change control of the axis, the torsional fatigue, dynamic vibration NVH and other tests of the test gear pair 15 can be carried out; at the same time, the energy feedback loading principle can ensure long-term stable, efficient and reliable operation, and meet the traditional fatigue endurance test and wear fatigue test functions of the test gear pair 15. The multifunctional gear test device of the present invention has a simple principle, novel structure, rich functions and reliable performance, which meets the various test requirements of various types of gears and makes up for the shortcomings of most current gear test devices.

[0034] The upper platform 21 of this embodiment is a disc-shaped platform, wherein a hollow cone is arranged on the upper part of the disc-shaped platform, and the hollow cone is eccentrically mounted on the disc-shaped platform. The eccentric arrangement not only provides the necessary position space for the posture adjustment between the driving shaft and the driven shaft, but also can adapt to the gear tests of different sizes.

[0035] Specific implementation method 2: Combination Figure 3 The present embodiment is described. The energy feedback loading transmission system 10 of the present embodiment includes a driving device 11, an input transmission box 12, a coupling 13, a test gear pair 15, a torque meter 17, an output transmission box 18 and a loading device 19.

[0036] The driving device 11 is installed on the upper platform 21, and the output end of the driving device 11 is connected to the input end of the input transmission box 12. The output end of the input transmission box 12 is connected to the upper part of the driving shaft through the coupling 13. The upper part of the driven shaft and the lower part of the driving shaft are connected through the test gear pair 15. The lower part of the driven shaft is connected to the output transmission box 18 through the coupling 13. The torque meter 17 is installed below the coupling 13 at the lower part of the driven shaft, and the loading device 19 is connected to the output transmission box 18 to realize loading.

[0037] This arrangement provides a transmission system, through which the various functions of the gears can be tested. Other components and connection relationships are the same as those in the first embodiment.

[0038] Specific implementation method three: Combination Figure 3 To explain this embodiment, the energy feedback loading transmission system 10 of this embodiment further includes a bearing seat 14 , the upper portion of the driving shaft is connected to the upper platform 21 via the bearing seat 14 , and the lower portion of the driven shaft is connected to the lower platform 23 via the bearing seat 14 .

[0039] Such a configuration has a simple structure and facilitates the smooth rotation of the driving shaft and the driven shaft during the test. Other components and connection relationships are the same as those of the first or second specific implementation.

[0040] Specific implementation method four: Combination Figure 3 To explain this embodiment, the energy feedback loading transmission system 10 of this embodiment further includes a gear quick installation mechanism 16 , and the upper part of the driving shaft and the lower part of the driven shaft are connected to the test gear pair 15 via the gear quick installation mechanism 16 .

[0041] Such arrangement facilitates the rapid disassembly and assembly of the test gear pair. Other components and connection relationships are the same as any one of the specific implementation modes 1 to 3.

[0042] Specific implementation method five: Combination Figure 1 and Figure 3 To explain this embodiment, the lower platform 23 of this embodiment has a hollow table-shaped column. Such a configuration facilitates the installation of corresponding test equipment such as a loading device and a torque meter, ensures the smooth completion of a multifunctional test, and has a compact structure. Other components and connection relationships are the same as any one of the specific embodiments 1 to 4.

[0043] Specific implementation method six: Combination Figure 1 and Figure 3The environmental simulation test chamber 30 of this embodiment is a chamber with a flexible and deformable structure. This arrangement facilitates the simulation test of the gear pair 15 under a sealed condition, simulating the actual test environment, and ensuring the gear test under a sealed environment under different postures. The other components and connection relationships are the same as any one of the specific embodiments 1 to 5.

[0044] After the upper and lower ends of the cabin body of this embodiment are connected to the upper platform 21 and the lower platform 23, they can adapt to posture adjustment at any angle and position, and are more flexible to use.

[0045] Specific implementation method seven: Combination Figure 1 and Figure 3 The present embodiment is described. The environmental simulation test chamber 30 of the present embodiment is sealed and installed between the upper platform 21 and the lower platform 23 .

[0046] Such arrangement ensures the simulation of real test conditions. Other components and connection relationships are the same as any one of the specific implementation modes 1 to 6.

[0047] Specific implementation method eight: Combination Figure 1 and Figure 3 To explain this embodiment, the number of the plurality of posture adjustment actuators 22 in this embodiment is 6, and each pair of two is a pair. The upper end and the lower end of each pair of posture adjustment actuators 22 are both hinged to the upper platform 21 and the lower platform 23, and each posture adjustment actuator 22 is retractable. In this way, six degrees of freedom posture adjustment is achieved. The other components and connection relationships are the same as any one of the specific embodiments 1 to 7.

[0048] Specific implementation method nine: Combination Figure 1 and Figure 3 To explain this embodiment, the upper parts of each pair of posture adjustment actuators 22 of this embodiment are arranged oppositely and close to each other, the lower parts of each pair of posture adjustment actuators 22 are arranged toward both sides, and a triangle is formed between each pair of posture adjustment actuators 22 and the lower platform 23. The other components and connection relationships are the same as any one of the specific embodiments 1 to 8.

[0049] The posture adjustment actuator 22 in this embodiment is preferably an electric push rod, which can not only realize the telescopic function, but also can flexibly adjust the telescopic scale according to actual test requirements.

[0050] Specific implementation method ten: Combination Figures 1 to 4 To explain this embodiment, the driving device 11 of this embodiment is a motor. Other components and connection relationships are the same as any one of the specific embodiments 1 to 9.

[0051] Combination Figures 1 to 4 The working principle of the present invention is described:

[0052] The energy feedback loading transmission system is combined with the six-degree-of-freedom attitude adjustment platform to achieve dynamic and static high-precision adjustment of the axis angle, axial direction, radial direction and other axis positions, and a flexible environmental simulation test cabin is set between the upper and lower mounting surfaces of the six-degree-of-freedom attitude adjustment platform to achieve sealing for the gear lubrication test, and can integrate high and low temperature, salt spray and other environmental simulation test functions.

[0053] First, the present invention uses the energy feedback loading method to load the test gear with speed and torque, which can make the whole test device have lower power consumption, so as to meet the requirements of reliable and efficient operation of long-term tests such as wear and fatigue; secondly, the present invention combines the six-degree-of-freedom attitude adjustment platform, and uses its six-degree-of-freedom high-precision dynamic and static adjustment performance to achieve the adjustment of the comprehensive axis position such as gear angle, axial and radial, so as to quickly and cost-effectively adapt to gears with different center distances and axis angle series; through the control of the torque and speed of the loader in the energy feedback loading device, the torque and speed fluctuations in the use of the gear can be simulated, and torsional fatigue tests can be performed; equipped with a torque meter, the influence of dynamic meshing deviation on torque fluctuation can be tested with high precision, and the dynamic vibration NVH characteristics of the gear can be tested. The multifunctional gear test device of the present invention has a simple principle, novel structure, rich functions and reliable performance, which meets the various test requirements of various types of gears and makes up for the shortcomings of most current gear test devices.

[0054] The above embodiments are only used to illustrate the technical invention of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical invention described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical invention to deviate from the spirit and scope of the technical invention of the embodiments of the present invention.

Claims

1. A multifunctional gear testing device, characterized in that: It comprises an energy feedback loading transmission system (10), a six-degree-of-freedom platform (20) and an environmental simulation test chamber (30). The energy feedback loading transmission system (10) and the environmental simulation test chamber (30) are installed on the six-degree-of-freedom platform (20), and the six-degree-of-freedom platform (20) is the supporting foundation of the whole device. The six-degree-of-freedom platform (20) comprises an upper platform (21), a lower platform (23) and a plurality of attitude adjustment actuators (22); the upper platform (21) and the lower platform (23) are arranged in parallel up and down and connected through the plurality of attitude adjustment actuators (22); and the axis angle, axial direction, radial direction and other axis positions of the test gear pair 15 in the energy feedback loading transmission system (10) are realized through the adjustment of the plurality of attitude adjustment actuators (22).

2. A multifunctional gear testing device according to claim 1, characterized in that: The energy feedback loading transmission system (10) comprises a driving device (11), an input transmission box (12), a coupling (13), a test gear pair (15), a torque meter (17), an output transmission box (18) and a loading device (19). The driving device (11) is mounted on the upper platform (21); the output end of the driving device (11) is connected to the input end of the input transmission box (12); the output end of the input transmission box (12) is connected to the upper part of the driving shaft through a coupling (13); the upper part of the driven shaft and the lower part of the driving shaft are connected through a test gear pair (15); the lower part of the driven shaft is connected to the output transmission box (18) through the coupling (13); the torque meter (17) is mounted below the coupling (13) at the lower part of the driven shaft; and the loading device (19) is connected to the output transmission box (18) to achieve loading.

3. A multifunctional gear testing device according to claim 2, characterized in that: The energy feedback loading transmission system (10) further comprises a bearing seat (14), wherein the upper portion of the driving shaft is connected to the upper platform (21) via the bearing seat (14), and the lower portion of the driven shaft is connected to the lower platform (23) via the bearing seat (14).

4. A multifunctional gear testing device according to claim 3, characterized in that: The energy feedback loading transmission system (10) further comprises a gear quick installation mechanism (16), and the upper part of the driving shaft and the lower part of the driven shaft are connected to the test gear pair (15) via the gear quick installation mechanism (16).

5. A multifunctional gear testing device according to claim 4, characterized in that: The lower platform (23) is a hollow table-shaped column.

6. A multifunctional gear testing device according to claim 5, characterized in that: The environmental simulation test chamber (30) is a chamber body with a flexible and deformable structure.

7. A multifunctional gear testing device according to claim 1 or 6, characterized in that: The environmental simulation test chamber (30) is sealed and installed between the upper platform (21) and the lower platform (23).

8. A multifunctional gear testing device according to claim 7, characterized in that: The number of the plurality of posture adjustment actuators (22) is six, with two of them forming a pair. The upper end and the lower end of each pair of posture adjustment actuators (22) are both hinged to the upper platform (21) and the lower platform (23), and each posture adjustment actuator (22) is retractable.

9. A multifunctional gear testing device according to claim 1 or 8, characterized in that: The upper parts of each pair of posture adjustment actuators (22) are arranged opposite to each other and close to each other, and the lower parts of each pair of posture adjustment actuators (22) are arranged toward both sides, so that a triangle is formed between each pair of posture adjustment actuators (22) and the lower platform (23).

10. A multifunctional gear testing device according to claim 2, characterized in that: The driving device (11) is a motor.

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