Mechanical closed high speed gear testing device

Abstract

The application relates to the technical field of mechanical test devices, in particular to a mechanical closed high-speed gear test device used for testing a test gear box, which comprises a driving mechanism and a closed loop mechanism, the closed loop mechanism comprises a first test gear assembly, a second test gear assembly and a connecting shaft system, a first input end and a first output end are connected through a first transmission structure; a second input end and a second output end are connected through a second transmission structure; a first connecting shaft connects the first input end and the second input end, and a second connecting shaft connects the first output end and the second output end; the driving mechanism is connected with the first connecting shaft or the second connecting shaft; and the test gear box is connected with the first transmission structure through a transmission shaft system. Low rotating speed is transmitted through the connecting shaft system, and high rotating speed is transmitted through the transmission shaft system, so that the test gear box can be provided with high rotating speed test requirements, the stability of the connecting shaft system can be guaranteed during the test process, and resonance of the device can be effectively avoided.

Description

Technical Field

[0001] This application relates to the field of mechanical testing equipment technology, and in particular to a mechanically enclosed high-speed gear testing device. Background Technology

[0002] As high-end equipment manufacturing accelerates its transformation towards high power density, high speed, and intelligence, gear transmission systems face stringent requirements for high torque load and high-speed stable operation in fields such as aerospace, marine power, and new energy equipment. This necessitates experimental equipment to verify gear dynamic characteristics, fatigue life, and transmission efficiency; simulate the fatigue failure mechanism of high-performance gears under extreme service environments in high-end aerospace equipment; and conduct fundamental data research on SN curves, fatigue limit lubrication, and oil loss characteristics. Within a closed testing technology system, acceleration and loading capacity, as a core indicator for breaking through the driving test boundary, directly determines the system's ability to reproduce ultra-high-speed scenarios.

[0003] Mechanically enclosed gear test benches can effectively reduce energy loss and improve testing efficiency and data accuracy. However, most mechanically enclosed gear test benches are mainly designed for low-speed and low-power testing scenarios, while there are relatively few solutions specifically for high-speed and high-power gears, making it difficult to fully evaluate high-speed and high-power gears and gearboxes.

[0004] Most existing mechanical enclosed test benches use a standard center distance long shaft system design, which leads to a reduction in the critical speed. When the speed approaches 35,000 rpm, resonance is easily triggered, which in turn causes severe bending and torsional vibrations, disrupts the normal meshing of gears, and causes irreversible damage such as pitting, scuffing, or even tooth breakage. It can also cause the connecting parts to loosen, making it impossible to carry out the test smoothly. Utility Model Content

[0005] To address the aforementioned problems, this application provides a mechanically enclosed high-speed gear testing device.

[0006] To achieve the above objectives, this application adopts the following technical solution: According to one aspect of this application, a mechanically enclosed high-speed gear testing device is provided for testing a gearbox under test, comprising a drive mechanism and a closed-loop mechanism, wherein the closed-loop mechanism includes: The first test gear assembly has a first input end and a first output end, and the first input end and the first output end are connected by a first transmission structure. The second test gear assembly has a second input end and a second output end, the second input end and the second output end being connected by a second transmission structure; and A connecting shaft system includes a first connecting shaft and a second connecting shaft, wherein the first connecting shaft connects the first input terminal and the second input terminal, and the second connecting shaft connects the first output terminal and the second output terminal; The drive mechanism is connected to the first connecting shaft or the second connecting shaft to drive rotation; The gearbox under test is connected to the first transmission structure or the second transmission structure via a transmission shaft system.

[0007] In one embodiment, the driving mechanism includes a drive motor and a drive transmission component, the input of which is connected to the drive motor, and the output of which is connected to the middle of the first connecting shaft.

[0008] In one embodiment, a torque adjustment mechanism is further included, which is disposed on the second connecting shaft; the drive mechanism is connected to the first connecting shaft.

[0009] In one embodiment, the torque adjustment mechanism includes a torque loader and a torque controller. The torque loader is disposed on the second connecting shaft, and the torque controller is electrically connected to the torque loader to adjust the output torque of the torque loader.

[0010] In one embodiment, the torque adjustment mechanism further includes a detector disposed on the drive shaft and electrically connected to the torque controller.

[0011] In one embodiment, the connecting shaft system is disposed between the first test gear assembly and the second test gear assembly, and the transmission shaft system is disposed on one side of the first transmission structure and the second transmission structure that are far apart from each other.

[0012] In one embodiment, both the first test gear assembly and the second test gear assembly include a gear mounting box, an input gear, and an output gear, wherein the input gear and the output gear are both disposed within the gear mounting box; The input ends of the two input gears are the first input end and the second input end, respectively; The output ends of the two output gears are the first output end and the second output end, respectively; The first transmission structure and the second transmission structure are respectively disposed in the corresponding gear mounting box, and are connected to the adjacent input gear and the output gear.

[0013] In one embodiment, both the first transmission structure and the second transmission structure include a first transmission gear and a second transmission gear. The input gear, the first transmission gear, the second transmission gear, and the output gear, located in the same gear mounting box, are arranged in sequence along the radial direction of the first connecting shaft and mesh with each other.

[0014] In one embodiment, two test gearboxes are provided, and the two test gearboxes are respectively connected to the first transmission structure and the second transmission structure through two sets of transmission shaft systems.

[0015] In one embodiment, the transmission ratio of the first transmission structure is different from that of the second transmission structure.

[0016] According to the mechanically enclosed high-speed gear testing device provided in the embodiments of this application, low speed is transmitted through the connecting shaft system and high speed is transmitted through the transmission shaft system. This can not only ensure the high speed testing requirements of the gearbox under test, but also ensure the stability of the connecting shaft system during the test, and effectively avoid resonance of the device. Attached Figure Description

[0017] Figure 1 This illustration shows a structural schematic diagram of a mechanically enclosed high-speed gear testing device provided in an embodiment of this application; Figure 2 Show Figure 1 Top view; Figure 3 Show Figure 2 Enlarged view of section A.

[0018] Explanation of reference numerals in the attached figures: 1. Drive mechanism; 11. Drive motor; 12. Drive transmission components; 2. Closed-loop mechanism; 21. First test gear assembly; 211. First input end; 212. First output end; 213. First transmission structure; 22. Second test gear assembly; 221. Second input end; 222. Second output end; 223. Second transmission structure; 23. Connecting shaft system; 231. First connecting shaft; 232. Second connecting shaft; 3. Transmission shaft system; 31. First transmission shaft; 32. Second transmission shaft; 4. Torque adjustment mechanism; 41. Torque loader; 42. Torque controller; 100. Test gearbox. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-3 As shown, this embodiment provides a mechanically enclosed high-speed gear testing device for testing a test gearbox 100. The device includes a drive mechanism 1 and a closed-loop mechanism 2. The closed-loop mechanism 2 includes a first test gear assembly 21, a second test gear assembly 22, and a connecting shaft system 23.

[0024] The first test gear assembly 21 has a first input end 211 and a first output end 212, which are connected by a first transmission structure 213. The second test gear assembly 22 has a second input end 221 and a second output end 222, which are connected by a second transmission structure 223. The connecting shaft system 23 includes a first connecting shaft 231 and a second connecting shaft 232, where the first connecting shaft 231 connects the first input end 211 and the second input end 221, and the second connecting shaft 232 connects the first output end 212 and the second output end 222.

[0025] The drive mechanism 1 is connected to the first connecting shaft 231 or the second connecting shaft 232 to drive rotation.

[0026] The test gearbox 100 is connected to the first transmission structure 213 or the second transmission structure 223 via the transmission shaft system 3.

[0027] The drive mechanism 1 provides the initial power required for the operation of the device and realizes the internal circulation of power through the closed-loop mechanism 2. The closed-loop mechanism 2 forms a rectangular power flow loop through the first test gear assembly 21, the second test gear assembly 22, and the first connecting shaft 231 and the second connecting shaft 232 connected between the first test gear assembly 21 and the second test gear assembly 22. The symmetrical rectangular loop structure can ensure that the power is transmitted evenly and stably in the closed-loop mechanism 2.

[0028] like Figures 1-3 As shown, the test gearbox 100 is connected to the closed-loop mechanism 2 via the transmission shaft 3. Specifically, the test gearbox 100 can be connected to the first transmission structure 213 or the second transmission structure 223. For ease of description, this embodiment takes the test gearbox 100 being connected to the first transmission structure 213 via the transmission shaft 3 as an example for detailed explanation.

[0029] The first transmission structure 213 has a certain transmission ratio for speed regulation. The first transmission structure 213 increases the lower speed transmitted by the first input end 211 to a higher speed, and then reduces the higher speed to a lower speed for transmission through the first output end 212; thus, it can be ensured that the connecting shaft system 23 can rotate at a lower speed during the test.

[0030] The first transmission structure 213 is connected to the gearbox 100 under test via the transmission shaft system 3 to transmit high speeds. By adjusting the transmission ratio of the first transmission structure 213, the gearbox 100 under test can be tested under different speed environments. Since the transmission shaft system 3 is used to connect the transmission structure and the gearbox 100 under test, its shaft length can be set to be shorter, that is, shorter than the length of the standard long-center-distance shaft system used in most existing mechanical enclosed test benches, which significantly improves dynamic stability and critical speed threshold. When the transmission shaft system 3 rotates at a high speed, it can effectively solve the problem that the test device is prone to resonance under high speed test scenarios, which can cause severe bending and torsional vibrations, destroy the normal meshing of gears, and cause irreversible damage such as pitting, scuffing, or even tooth breakage; it can also cause the connecting parts to loosen, making the test impossible to proceed smoothly.

[0031] It should be noted that because most existing mechanically enclosed test benches use a standard center-distance long shaft system design, the critical speed is reduced, and resonance is easily triggered near 35,000 rpm. Therefore, the comparison benchmark for the lower and higher speeds in this embodiment is the speed that can ensure the stable operation and testing of the existing device; we call it the stable speed. The stable speed may vary in different application scenarios. For example, the standard center-distance long shaft system design of existing mechanically enclosed test benches leads to a reduced critical speed, and resonance is easily triggered near 35,000 rpm; in this case, 35,000 rpm is the stable speed. For ease of description, lower speeds below the stable speed will be referred to as low speeds, and higher speeds above the stable speed will be referred to as high speeds.

[0032] like Figures 1-2 As shown, in some embodiments, the drive mechanism 1 is used to drive rotation, and it can be connected to the first connecting shaft 231 or the second connecting shaft 232. In this embodiment, the drive mechanism 1 is described as being connected to the first connecting shaft 231.

[0033] The drive mechanism 1 includes a drive motor 11, which can be connected to the end of the first connecting shaft 231. At this time, the output shaft of the drive motor 11 can be coaxially fixed with the end of the first connecting shaft 231 through a coupling, so that the rotation of the output shaft of the drive motor 11 can drive the rotation of the first connecting shaft 231.

[0034] Of course, the drive mechanism 1 may also include a drive transmission component 12. The input end of the drive transmission component 12 is connected to the drive motor 11, and the output end of the drive transmission component 12 can be connected to any position of the first connecting shaft 231 to realize the rotation of the first connecting shaft 231 by the drive transmission component 12. Thus, the connection position of the first connecting shaft 231 can be adjusted to meet the usage requirements under different conditions.

[0035] The drive transmission component 12 includes any structure that can realize transmission, such as a pulley, a sprocket and chain structure, a gear set structure, etc. In this embodiment, the drive transmission component 12 adopts a pulley, which includes two pulleys. The two pulleys are covered with a belt, and the two pulleys are respectively mounted on the output shaft of the drive motor 11 and the first connecting shaft 231, thereby realizing the drive motor 11 driving the rotation of the first connecting shaft 231.

[0036] Furthermore, the output end of the drive transmission component 12 is connected to the middle position of the first connecting shaft 231. This allows the driving torque to be symmetrically distributed to the first test gear assembly 21 and the second test gear assembly 22 on both sides of the first connecting shaft 231, thereby effectively avoiding uneven torque distribution and additional bending moment caused by drive point offset, and significantly improving the smoothness of operation and service life of the connecting shaft system 23.

[0037] like Figures 1-2 As shown, to simulate the load borne by the test gearbox 100 under actual working conditions, the mechanically enclosed high-speed gear testing device also includes a torque adjustment mechanism 4, which is disposed on the second connecting shaft 232; the drive mechanism 1 is connected to the first connecting shaft 231. By arranging the torque adjustment mechanism 4 and the drive mechanism 1 on the two shafts of the connecting shaft system 23 respectively, the speed control and torque control on the device are separated, effectively avoiding the coupling of the torque adjustment mechanism 4 and the drive mechanism 1.

[0038] The torque adjustment mechanism 4 includes a torque loader 41, which is disposed on the second connecting shaft 232 to apply a load to the second connecting shaft 232. The increased load can be transmitted to the test gearbox 100 through the closed loop mechanism 2 and the transmission shaft system 3 to test the test gearbox 100 under different working conditions.

[0039] For example, when the test gearbox 100 is subjected to steady-state durability test, a constant torque is applied by the torque loader 41, and a constant speed is maintained by the drive motor 11. Under this state, the test gearbox 100 runs continuously for a certain period of time, thereby testing the reliability and fatigue life of the test gearbox 100 at the long-term rated operating point.

[0040] In addition, when the test gearbox 100 is subjected to overload test conditions, the torque loader 41 applies a torque much higher than the rated value for a short period of time while the test gearbox 100 is running at high speed, for example, applying twice the rated torque, for a certain period of time, to simulate emergency acceleration or sudden jamming.

[0041] Of course, the torque adjustment mechanism 4 may also include a torque controller 42, which is electrically connected to the torque loader 41 to adjust the output torque of the torque loader 41. By adjusting the torque loader 41 through the torque controller 42, the load transmitted to the gearbox 100 under test is adjusted, further increasing the test conditions of the gearbox 100 under test.

[0042] For example, when the gearbox under test 100 is subjected to a variable load life test, the torque controller 42 controls the torque loader 41 to apply a dynamic torque that fluctuates periodically or non-periodically around a certain mean value according to a preset program, thereby generating a power flow with corresponding fluctuations in the mechanical closed loop; thus, the influence of load fluctuations on the fatigue life and wear of the gearbox under test 100 under alternating loads in actual applications is simulated.

[0043] Furthermore, during the torque sweep efficiency test of the gearbox 100, while the drive motor 11 maintains a constant speed, the torque controller 42 controls the torque loader 41 to dynamically adjust the applied torque in a step-by-step or continuous manner, covering the entire test range from low to high. This allows the acquisition of efficiency characteristic curves of the gearbox 100 under different loads, revealing the mapping relationship between the transmission efficiency of the gearbox 100 and the load torque, and determining the high-efficiency operating range.

[0044] It should be noted that the above-listed working conditions are merely exemplary descriptions in this embodiment. In actual applications, they can be adapted to different test objectives and application scenarios.

[0045] Furthermore, the torque adjustment mechanism 4 also includes a detector, which is mounted on the transmission shaft system 3 and electrically connected to the torque controller 42. The torque controller 42 receives the torque of the test gearbox 100 detected by the detector, and then adjusts the torque of the second connecting shaft 232 in real time according to the control torque loader 41.

[0046] As an example, the torque loader 41 can be a hydraulic torque loader 41, the torque controller 42 can be a three-position four-way solenoid directional valve, and the detector can be a torque sensor. The torque controller 42 receives the torque detected by the transmission shaft system 3 in real time and compares the detected torque with the target torque. When a deviation exists, it controls the torque loader 41 to adjust the torque applied to the second connecting shaft 232 in real time via hydraulic drive, thereby achieving dynamic adjustment of the torque of the transmission shaft system 3.

[0047] Specifically, when the torque sensor detects that the torque of the transmission shaft 3 is lower than the target torque, the torque controller 42 switches to the first operating state, increasing the torque applied to the second connecting shaft 232 by increasing the internal oil pressure of the torque loader 41, so that the torque of the gearbox 100 under test rises to the target value; when the torque sensor detects that the torque output of the gearbox 100 under test is higher than the target value, the torque controller 42 switches to the second operating state, decreasing the torque applied to the second connecting shaft 232 by decreasing the internal oil pressure of the torque loader 41, so that the torque of the gearbox 100 under test drops to the target value; when the torque sensor detects that the torque output of the gearbox 100 under test is consistent with the target value, the torque controller 42 is in the third operating state, the oil circuit is closed, and the torque loader 41 maintains the current output torque.

[0048] The detector can be located at the input end of the gearbox 100 under test, or at the output end of the gearbox 100 under test. In some embodiments, the detector can also be located on the first connecting shaft 231.

[0049] In contrast, existing long-shaft designs amplify the concentricity deviation of the sealing structure, and the increased oscillation accelerates the wear of the sealing ring, leading to uneven frictional heat accumulation. Furthermore, the traditional torque loader 41 operates continuously at high speeds (≥30000 rpm) and high torques (≥1200 Nm), resulting in excessive contact stress on the tooth surfaces; this device can also solve the above problems through the aforementioned structural design.

[0050] Furthermore, existing electrically enclosed test benches achieve dynamic loading through power feedback systems, which require complex electrical equipment to operate and result in high long-term operating costs. While lower-power solutions save costs, they lack sufficient torque loading and dynamic adjustment capabilities, making them unsuitable for high-torque testing requirements. In contrast, the device provided in this application offers excellent torque loading and dynamic adjustment capabilities at a lower cost, making it adaptable to a wider range of testing needs.

[0051] like Figures 1-2 As shown, in some embodiments, both the first test gear assembly 21 and the second test gear assembly 22 include a gear mounting box, an input gear, and an output gear, with the input gear and the output gear both disposed within the gear mounting box.

[0052] The input ends of the two input gears are the first input end 211 and the second input end 221, respectively; the output ends of the two output gears are the first output end 212 and the second output end 222, respectively; the first transmission structure 213 and the second transmission structure 223 are respectively disposed in the corresponding gear mounting boxes and are connected to the adjacent input gears and output gears.

[0053] The gear mounting box provides mounting support and protection for the input gear, output gear, first transmission structure 213 and second transmission structure 223; it can effectively prevent dust or debris in the test environment from affecting the meshing of the gears in the first test gear assembly 21 and the second test gear assembly 22, and ensure the stable operation of the closed loop mechanism 2.

[0054] Furthermore, both the first transmission structure 213 and the second transmission structure 223 include a first transmission gear and a second transmission gear. The input gear, the first transmission gear, the second transmission gear, and the output gear, located in the same gear mounting box, are arranged in sequence along the radial direction of the first connecting shaft 231 and mesh with each other. This enables the transmission connection, allowing the rotational speed to increase first and then decrease, ensuring the low rotational speed of the connecting shaft system 23 and the high rotational speed of the transmission shaft system 3, thus providing a high-speed testing environment for the gearbox 100 under test.

[0055] like Figures 1-3 As shown, the test gearbox 100 is connected to the first transmission structure 213 via the transmission shaft 3. In this case, the second test gear assembly 22 serves as a closed loop connection between the first test gear assembly 21 and the connecting shaft 23. Therefore, the input gear, the first transmission gear, the second transmission gear, and the output gear in the second test gear assembly 22 can have the same number of teeth, thereby ensuring stable transmission of speed and torque. Of course, the number of teeth in the input gear, the first transmission gear, the second transmission gear, and the output gear in the second test gear assembly 22 can also be adjusted to match the rotational speeds of the first connecting shaft 231 and the second connecting shaft 232.

[0056] The transmission shaft system 3 includes a first transmission shaft 31 and a second transmission shaft 32. The test gearbox 100 has a first test gear and a second test gear that mesh with each other. The two ends of the first transmission shaft 31 are respectively connected to the first test gear and the first transmission gear of the first transmission structure 213. The two ends of the second transmission shaft 32 are respectively connected to the second test gear and the second transmission gear of the first transmission structure 213, thereby realizing the transmission of speed and torque.

[0057] In some embodiments, two test gearboxes 100 are provided, and the two test gearboxes 100 are respectively connected to the first transmission structure 213 and the second transmission structure 223 through two sets of transmission shaft systems 3; thereby, under the drive of the drive mechanism 1, the device can test two test gearboxes 100 simultaneously, which greatly improves the test efficiency and reduces the test cost.

[0058] The transmission ratio of the first transmission structure 213 can be the same as that of the second transmission structure 223, enabling testing of different gearboxes 100 under the same environment. Of course, if the two gearboxes 100 are of different models or have different test targets, the transmission ratios of the first transmission structure 213 and the second transmission structure 223 can be set differently. This differentiated speed ratio design allows the same closed loop to simultaneously provide two different gearboxes 100 with their respective required different speeds and torques, greatly enhancing the flexibility and applicability of the testing device.

[0059] As an example, the transmission ratio of the first transmission structure 213 can be 7, the transmission ratio of the second transmission structure 223 can be 2, and the base speed of the drive motor 11 is 5000 rpm. Thus, the speed can be increased to 35000 rpm through the first transmission structure 213 to test the gearbox 100 connected to the first test gear assembly 21; the speed can be increased to 10000 rpm through the second transmission structure 223 to test the gearbox 100 connected to the second test gear assembly 22, thus meeting the wide range of testing requirements from normal load to extreme conditions.

[0060] In some embodiments, the connecting shaft system 23 is disposed between the first test gear assembly 21 and the second test gear assembly 22, and the transmission shaft system 3 is disposed on one side of the first transmission structure 213 and the second transmission structure 223 that are far apart from each other. Thus, the closed-loop mechanism 2 serves as the main annular structure of the device, and the transmission shaft system 3 is disposed on one side of the first transmission structure 213 and the second transmission structure 223 that are far apart from each other, that is, on the outer side of the main annular structure. This facilitates the installation and replacement of the gearbox under test on the transmission shaft system 3, making operation convenient and improving testing efficiency.

[0061] like Figures 1-3 As shown above, the mechanically enclosed high-speed gear testing device provided in this embodiment drives the motor 11 to be connected to the first connecting shaft 231, driving the first connecting shaft 231 to rotate at a low speed, thereby driving the input gear in the first test gear assembly 21 to rotate at a low speed. Under the transmission action of the first transmission structure 213, the low speed is increased to a high speed and transmitted to the test gearbox 100 through the transmission shaft system 3 to conduct a high-speed test on the test gearbox 100. Then, through the meshing of the output gear in the first test gear assembly 21 with the first transmission structure 213, the high speed is reduced to a low speed and transmitted to the second connecting shaft 232 through the output gear. This ensures the low-speed rotation of the connecting shaft system 23, avoiding the risk of critical speed and ensuring the operational reliability of the connecting shaft system 23.

[0062] Dynamic loads can be applied to the second connecting shaft 232 in real time via the torque adjustment mechanism 4, and closed-loop control of loading accuracy can be achieved with the help of a detector. This achieves efficient energy feedback while reducing the impact of shaft torsional vibration on ultra-high-speed testing.

[0063] The mechanically enclosed high-speed gear testing device provided in this application can flexibly simulate testing requirements under multiple operating conditions. This device ensures the operational stability of the high-speed shaft system through a stable mechanically enclosed structure, thus balancing high-speed testing with ultra-high torque loading.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mechanically enclosed high-speed gear testing device for testing a gearbox (100), characterized in that, It includes a drive mechanism (1) and a closed-loop mechanism (2), wherein the closed-loop mechanism (2) includes: The first test gear assembly (21) has a first input end (211) and a first output end (212), and the first input end (211) and the first output end (212) are connected by a first transmission structure (213). The second test gear assembly (22) has a second input end (221) and a second output end (222), the second input end (221) and the second output end (222) being connected by a second transmission structure (223); and The connecting shaft system (23) includes a first connecting shaft (231) and a second connecting shaft (232). The first connecting shaft (231) connects the first input terminal (211) and the second input terminal (221), and the second connecting shaft (232) connects the first output terminal (212) and the second output terminal (222). The drive mechanism (1) is connected to the first connecting shaft (231) or the second connecting shaft (232) to drive rotation; The test gearbox (100) is connected to the first transmission structure (213) or the second transmission structure (223) via a transmission shaft system (3).

2. The mechanically enclosed high-speed gear testing device according to claim 1, characterized in that, The drive mechanism (1) includes a drive motor (11) and a drive transmission component (12). The input of the drive transmission component (12) is connected to the drive motor (11), and the output end of the drive transmission component (12) is connected to the middle position of the first connecting shaft (231).

3. The mechanically enclosed high-speed gear testing device according to claim 1, characterized in that, It also includes a torque adjustment mechanism (4), which is disposed on the second connecting shaft (232); the drive mechanism (1) is connected to the first connecting shaft (231).

4. The mechanically enclosed high-speed gear testing device according to claim 3, characterized in that, The torque adjustment mechanism (4) includes a torque loader (41) and a torque controller (42). The torque loader (41) is disposed on the second connecting shaft (232). The torque controller (42) is electrically connected to the torque loader (41) to adjust the output torque of the torque loader (41).

5. The mechanically enclosed high-speed gear testing device according to claim 4, characterized in that, The torque adjustment mechanism (4) further includes a detector, which is disposed on the transmission shaft system (3) and electrically connected to the torque controller (42).

6. The mechanically enclosed high-speed gear testing device according to claim 1, characterized in that, The first test gear assembly (21) and the second test gear assembly (22) both include a gear mounting box, an input gear and an output gear, wherein the input gear and the output gear are both disposed in the gear mounting box; The input ends of the two input gears are the first input end (211) and the second input end (221), respectively. The output ends of the two output gears are the first output end (212) and the second output end (222), respectively. The first transmission structure (213) and the second transmission structure (223) are respectively disposed in the corresponding gear mounting box and are connected to the adjacent input gear and output gear.

7. The mechanically enclosed high-speed gear testing device according to claim 6, characterized in that, Both the first transmission structure (213) and the second transmission structure (223) include a first transmission gear and a second transmission gear. The input gear, the first transmission gear, the second transmission gear and the output gear located in the same gear mounting box are arranged in sequence along the radial direction of the first connecting shaft (231) and mesh with each other.

8. The mechanically enclosed high-speed gear testing device according to any one of claims 1-7, characterized in that, The connecting shaft system (23) is disposed between the first test gear assembly (21) and the second test gear assembly (22), and the transmission shaft system (3) is disposed on one side of the first transmission structure (213) and the second transmission structure (223) that are far apart from each other.

9. The mechanically enclosed high-speed gear testing device according to any one of claims 1-7, characterized in that, Two test gearboxes (100) are provided, and the two test gearboxes (100) are respectively connected to the first transmission structure (213) and the second transmission structure (223) through two sets of transmission shaft systems (3).

10. The mechanically enclosed high-speed gear testing device according to claim 9, characterized in that, The transmission ratio of the first transmission structure (213) is different from that of the second transmission structure (223).

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