Inertia automatic adjusting flywheel device for test bench

Abstract

The utility model discloses an inertia automatic adjusting flywheel device for a test bench. The inertia automatic adjusting flywheel device comprises a main shaft, a box body, a third bearing, a first flywheel assembly, a first meshing sleeve, a first shifting fork, a first hydraulic oil cylinder, a second flywheel assembly, a second meshing sleeve, a second shifting fork and a second hydraulic oil cylinder. The main shaft serves as a flywheel rotation center and transmits and adjusts rotation inertia, and outer teeth are arranged in the middle. The box body accommodates and supports the flywheel, and the third bearing is installed between the main shaft and the box body. The first flywheel assembly is rotatably installed on the main shaft, the first meshing sleeve is controlled to be connected with or separated from the main shaft through meshing and separation of inner teeth and outer teeth, and the first hydraulic oil cylinder drives the first shifting fork. The second flywheel assemblies are symmetrically installed, and the second hydraulic oil cylinder drives the second shifting fork to control connection and separation. According to the utility model, the inertia of the flywheel set is accurately adjusted, the reliability, maintainability and test accuracy of equipment are improved through the optimized design, different test requirements are flexibly met, strong inertia adjusting and testing capabilities are provided for the test bench, the test field is innovated, and great significance is provided for improving the test efficiency and quality.

Description

Technical Field

[0001] This utility model belongs to the field of powertrain inertia testing technology, and in particular relates to an automatic inertia adjustment flywheel device for a test bench. Background Technology

[0002] In the current rapid development of the automotive and machinery manufacturing industries, the technological advancements in core components such as transmissions, clutches, and hydraulic motors, as well as powertrain products, are progressing at an unprecedented pace, placing increasingly stringent demands on product performance. Especially in the domestic market, with intensifying international competition, domestic manufacturers, while pursuing performance improvements, also face a significant gap in reliability compared to similar foreign products. To narrow this gap, manufacturers are continuously strengthening quality control and have added more rigorous dynamic load impact testing to existing factory and performance testing benches, aiming to improve overall reliability through enhanced durability testing.

[0003] Flywheel assemblies, as indispensable inertia loading devices in test benches, are widely favored for their ability to effectively simulate load characteristics under real-world working conditions using the rotational kinetic energy of the flywheel. Flywheel assemblies not only offer fast response speeds but also high adjustability, allowing for flexible adjustment of the loaded inertia to meet the diverse inertia requirements of the tested products. Furthermore, flywheel assemblies play a crucial role in various test benches due to their excellent durability, stability, and safety.

[0004] However, despite the numerous advantages that flywheel assemblies have demonstrated in test bench applications, they still have significant shortcomings in inertia adjustment. Currently, inertia adjustment of flywheel assemblies mainly relies on manual operation, which is not only cumbersome but also time-consuming and labor-intensive, especially when adjusted inside the confined space of a test bench, causing great inconvenience to operators. This manual adjustment method not only affects testing efficiency but may also introduce human error during the adjustment process, thereby affecting the accuracy of test results.

[0005] Therefore, in view of the problems of inconvenience, time and labor costs in the existing flywheel inertia adjustment methods, there is an urgent need for a new technology that can automatically and accurately adjust the flywheel inertia in order to improve testing efficiency, reduce operation difficulty, and ensure the accuracy and reliability of test results. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides an automatic inertia adjustment flywheel device for test benches.

[0007] This utility model is implemented as follows: an automatic inertia adjustment flywheel device for a test bench, characterized in that it includes: a main shaft, serving as the rotation center of the flywheel, used to transmit and adjust rotational inertia; an external tooth is provided in the middle of the main shaft; a housing, used to house and support the flywheel; and a third bearing, installed between the main shaft and the housing.

[0008] A first flywheel assembly is rotatably mounted on the main shaft; a first engagement sleeve is disposed on the main shaft and engages and disengages with the internal and external teeth of the first flywheel assembly; a first shift fork is connected to the first engagement sleeve and is used to control the engagement or disengagement of the first flywheel assembly from the main shaft; a first hydraulic cylinder is used to drive the first shift fork to move left and right, thereby controlling the engagement or disengagement of the first flywheel assembly from the main shaft; a second flywheel assembly is installed in the housing, rotatably mounted on the main shaft, and symmetrically arranged with the first flywheel assembly; a second engagement sleeve is disposed on the main shaft and, through engagement and disengagement with the internal and external teeth of the second flywheel assembly, realizes the power connection or disconnection of the second flywheel assembly from the main shaft; a second shift fork is connected to the second engagement sleeve; a second hydraulic cylinder works independently of the first hydraulic cylinder and is used to drive the second shift fork to move left and right, thereby controlling the engagement or disengagement of the second flywheel assembly from the main shaft.

[0009] More preferably, the box body adopts a split structure, including a detachable box cover, an upper box body, and a lower box body.

[0010] A further preferred embodiment includes a position detection device installed on both sides inside the lower housing to detect the left and right positions of the first shift fork and the second shift fork, respectively.

[0011] A further preferred embodiment includes a speed measuring device installed on both sides inside the lower housing to measure the real-time rotational speed of the first flywheel assembly and the second flywheel assembly, respectively.

[0012] More preferably, the first flywheel assembly includes a first left end cover, a first bearing, a first right end engagement cover with external teeth, and a first flywheel, wherein the first flywheel assembly is rotatably mounted on the main shaft via the first bearing; the first engagement sleeve is provided with internal teeth that match the external teeth on the first right end engagement cover, and is mounted on the first right end engagement cover of the first flywheel assembly through the cooperation of the internal and external teeth, so as to realize the connection or separation between the first flywheel assembly and the main shaft.

[0013] More preferably, the second flywheel assembly includes a second right end cover, a second bearing, a second left end engagement cover, and a second flywheel, wherein the second left end engagement cover is rotatably mounted on the main shaft via the second bearing; the outer surface of the second left end engagement cover is designed with external teeth; the inner surface of the second engagement sleeve is designed with internal teeth that cooperate with the external teeth of the second left end engagement cover, so as to realize the detachable engagement connection between the second flywheel assembly and the main shaft.

[0014] Advantages and technical effects of this utility model: The automatic inertia adjustment flywheel device for test benches provided by this utility model has excellent overall technical performance. Through the ingenious combination of two independent flywheel assemblies (first flywheel assembly and second flywheel assembly) with the main shaft, precise adjustment of the flywheel assembly's inertia is achieved, greatly improving the flexibility and accuracy of testing. The two hydraulic cylinder systems in the device work independently, driving the shift fork to control the sliding of the engagement sleeve, enabling stable engagement or smooth disengagement of the flywheel assembly and the main shaft, meeting the inertia adjustment needs of diverse testing scenarios. The internal and external gear meshing of the flywheel assembly's bearings and engagement cover ensures the robustness of the connection and the reliability of the separation, providing a solid foundation for precise inertia control. Simultaneously, the split-structure housing design facilitates disassembly and maintenance, reducing repair difficulty and improving equipment efficiency and lifespan. The addition of a position detection device monitors the shift fork position in real time, ensuring precise engagement of the engagement sleeve, further improving the accuracy and stability of inertia adjustment. The speed measuring device can measure the flywheel speed in real time, providing accurate data support for testing and helping to more comprehensively evaluate and analyze test results.

[0015] In summary, this invention not only achieves precise adjustment of the flywheel assembly's inertia but also improves the equipment's reliability, maintainability, and testing accuracy through a series of optimized designs. This design enables the device to flexibly respond to different testing needs, providing the test bench with powerful inertia adjustment and testing capabilities. It represents a significant innovation in the testing field and is of great importance for improving testing efficiency and quality. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention without the upper box body;

[0017] Figure 2 This is a schematic diagram of the box body according to an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the assembly structure of the first flywheel assembly and the second flywheel assembly.

[0019] In the diagram: 1. Main shaft; 2. Housing; 201. Housing cover; 202. Upper housing; 203. Lower housing; 3. First flywheel assembly; 301. First left end cover; 302. First bearing; 303. First right end engagement cover; 304. First flywheel; 4. First shift fork; 5. Position detection device; 6. First engagement sleeve; 7. Speed ​​measuring device; 8. Third bearing; 9. First hydraulic cylinder; 11. Second hydraulic cylinder; 12. Second flywheel assembly; 1201. Second right end cover; 1202. Second bearing; 1203. Second left end engagement cover; 1204. Second flywheel; 13. Second shift fork; 14. Second engagement sleeve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0021] Please see Figures 1 to 3 An automatic inertia adjustment flywheel device for a test bench includes: a main shaft 1, serving as the rotation center of the flywheel for transmitting and adjusting rotational inertia; external teeth are provided in the middle of the main shaft; a housing 2 for housing and supporting the flywheel; a third bearing 8 installed between the main shaft 1 and the housing 2; a first flywheel assembly 3 rotatably mounted on the main shaft 1; a first engagement sleeve 6 disposed on the main shaft 1, engaging and disengaging with the internal and external teeth of the first flywheel assembly; a first shift fork 4 connected to the first engagement sleeve 6 for controlling the engagement or disengagement of the first flywheel assembly from the main shaft 1; and a first hydraulic cylinder 9 for driving the first shift fork 4 left and right. The system moves the first flywheel assembly 3, thereby controlling its engagement or disengagement from the main shaft. A second flywheel assembly 12 is installed inside the housing, rotatably mounted on the main shaft 1, symmetrically arranged with the first flywheel assembly 3. A second engagement sleeve 14 is located on the main shaft 1; by engaging and disengaging with the internal and external teeth of the second flywheel assembly, the system achieves the power connection or disconnection between the second flywheel assembly 12 and the main shaft 1. A second shift fork 13 is connected to the second engagement sleeve 14. A second hydraulic cylinder 11, working independently of the first hydraulic cylinder 9, drives the second shift fork 13 to move left and right, thereby controlling the engagement or disengagement of the second flywheel assembly 12 from the main shaft. This test bench uses an automatic inertia-adjusting flywheel device. Through the independent and controllable connection of the two flywheel assemblies to the main shaft, it achieves precise inertia adjustment, significantly improving the flexibility and accuracy of the test. Two sets of hydraulic cylinder systems independently drive the shift fork, controlling the sliding of the engagement sleeve, thus flexibly engaging or disengaging the flywheel assembly from the main shaft to meet diverse testing needs.

[0022] Preferably, the housing 2 adopts a split structure, including a detachably connected housing cover 201, an upper housing 202, and a lower housing 203. This facilitates disassembly and maintenance, reduces repair difficulty, and improves the efficiency and lifespan of the equipment.

[0023] Preferably, the device also includes a position detection device 5, installed on both sides inside the lower housing 203, to detect the left and right positions of the first shift fork 4 and the second shift fork 13, respectively. The addition of the position detection device enables real-time monitoring of the shift fork positions, ensuring precise engagement of the meshing sleeves, improving the accuracy and stability of inertia adjustment, and enhancing the reliability of the equipment.

[0024] Preferably, the system also includes a speed measuring device 7, installed on both sides inside the lower housing 203, to measure the real-time rotational speeds of the flywheel 304 of the first flywheel assembly 3 and the flywheel 1204 of the second flywheel assembly 12, respectively. The speed measuring device can measure the flywheel rotational speed in real time, providing accurate data support for the test and helping to more comprehensively evaluate and analyze the test results.

[0025] Preferably, the first flywheel assembly 3 includes a first left end cover 301, a first bearing 302, a first right end engagement cover 303 with external teeth, and a first flywheel 304. The first flywheel assembly 3 is rotatably mounted on the main shaft 1 via the first bearing 302. The first engagement sleeve 6 is provided with internal teeth that match the external teeth on the first right end engagement cover 303, and is mounted on the first right end engagement cover 303 of the first flywheel assembly 3 through the cooperation of the internal and external teeth, so as to realize the connection or separation between the first flywheel assembly 3 and the main shaft 1.

[0026] Preferably, the second flywheel assembly 12 includes a second right end cover 1201, a second bearing 1202, a second left end engagement cover 1203, and a second flywheel 1204. The second left end engagement cover 1203 is rotatably mounted on the main shaft 1 via the second bearing 1202. The outer surface of the second left end engagement cover 1203 is designed with external teeth. The inner surface of the second engagement sleeve 14 is designed with internal teeth that cooperate with the external teeth of the second left end engagement cover 1203, so as to realize the detachable engagement connection between the second flywheel assembly and the main shaft 1.

[0027] Both the first and second flywheel assemblies employ precision bearing and engagement cover designs. Through the ingenious cooperation of internal and external teeth, they achieve stable connection and smooth disengagement with the main shaft. This design not only ensures robust engagement but also provides a reliable guarantee for precise inertia adjustment. Both assemblies can be controlled independently, making inertia adjustment more flexible and capable of meeting diverse needs in different testing scenarios. By independently controlling the connection or disengagement of the first and second flywheel assemblies from the main shaft, fine-tuning of the flywheel assembly's inertia can be achieved, thereby improving testing accuracy and flexibility and providing the test bench with powerful inertia adjustment and testing capabilities.

[0028] The working principle of this utility model is as follows: The automatic inertia adjustment flywheel device of this test bench realizes the automatic adjustment of the inertia of the flywheel assembly through two independent flywheel assemblies (first flywheel assembly 3 and second flywheel assembly 12) and corresponding meshing sleeves (first meshing sleeve 6 and second meshing sleeve 14) and shift forks (first shift fork 4 and second shift fork 13) mechanisms. Inertia adjustment of the first flywheel assembly: When it is necessary to increase the inertia, the cylinder rod of the first hydraulic cylinder 9 retracts, driving the first shift fork 4 to move to the right through leverage. The first shift fork 4 then moves the first meshing sleeve 6 to slide to the right along the right end meshing cover 303 of the first flywheel assembly. When the first meshing sleeve 6 engages with the right end meshing cover 303 and the external teeth of the main shaft 1 simultaneously, the first flywheel assembly 3 is connected to the main shaft 1, thereby increasing the inertia of the entire flywheel assembly. When it is necessary to decrease the inertia, the cylinder rod of the first hydraulic cylinder 9 extends, driving the first shift fork 4 to move to the left. The first shift fork 4 moves the first engagement sleeve 6 to the left, disengaging it from the external teeth of the main shaft 1 while maintaining engagement only with the right end engagement cover 303. This disengages the first flywheel assembly 3 from the main shaft 1, reducing the flywheel assembly's inertia. Inertia adjustment of the second flywheel assembly: Similarly, when an increase in inertia is needed, the cylinder rod of the second hydraulic cylinder 11 extends, leveraging the second shift fork 13 to move to the left. The second shift fork 13 then moves the second engagement sleeve 14 to slide to the left along the left end engagement cover 1203 of the second flywheel assembly. When the second engagement sleeve 14 engages simultaneously with the left end engagement cover 1203 and the external teeth of the main shaft 1, the second flywheel assembly 12 is connected to the main shaft 1, increasing the flywheel assembly's inertia. When a decrease in inertia is needed, the cylinder rod of the second hydraulic cylinder 11 retracts, moving the second shift fork 13 to the right. The second shift fork 13 moves the second engagement sleeve 14 to the right, disengaging it from the external teeth of the main shaft 1, while maintaining engagement only with the left-end engagement cover 1203. This disengages the second flywheel assembly 12 from the main shaft 1, thereby reducing the flywheel assembly's inertia. In summary, this invention uses two independent hydraulic cylinders, shift forks, and engagement sleeve mechanisms to control the connection or disengagement of the two flywheel assemblies from the main shaft, thus achieving precise adjustment of the flywheel assembly's inertia. This design allows the device to flexibly adjust the inertia according to different testing requirements, improving the accuracy and flexibility of the test.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic inertia adjustment flywheel device for a test bench, characterized in that, include: The main shaft (1) serves as the rotation center of the flywheel and is used to transmit and adjust the rotational inertia. The spindle has external teeth in the middle; Housing (2) for housing and supporting the flywheel; third bearing (8) installed between the main shaft (1) and housing (2); The first flywheel assembly (3) is rotatably mounted on the main shaft (1); the first engagement sleeve (6) is disposed on the main shaft (1) and engages and disengages with the internal and external teeth of the first flywheel assembly; the first shift fork (4) is connected to the first engagement sleeve (6) and is used to control the engagement or disengagement of the first flywheel assembly with the main shaft (1); the first hydraulic cylinder (9) is used to drive the first shift fork (4) to move left and right, thereby controlling the engagement or disengagement of the first flywheel assembly (3) with the main shaft; A second flywheel assembly (12) is installed inside the housing and is rotatably mounted on the main shaft (1), symmetrically arranged with the first flywheel assembly (3). A second meshing sleeve (14) is disposed on the main shaft (1). Through the meshing and disengagement of the inner and outer teeth of the second flywheel assembly, the power connection or disconnection between the second flywheel assembly (12) and the main shaft (1) is realized. The second shift fork (13) is connected to the second engagement sleeve (14), and the second hydraulic cylinder (11) works independently of the first hydraulic cylinder (9) to drive the second shift fork (13) to move left and right, thereby controlling the engagement or disengagement of the second flywheel assembly (12) with the main shaft.

2. The automatic inertia adjustment flywheel device for the test bench according to claim 1, characterized in that: The box (2) adopts a split structure, including a detachable box cover (201), an upper box (202) and a lower box (203).

3. The automatic inertia adjustment flywheel device for the test bench according to claim 1, characterized in that: It also includes a position detection device (5), which is installed on both sides inside the lower housing (203) to detect the left and right positions of the first shift fork (4) and the second shift fork (13) respectively.

4. The automatic inertia adjustment flywheel device for the test bench according to claim 1, characterized in that: It also includes a speed measuring device (7), which is installed on both sides inside the lower housing (203) to measure the real-time rotation speed of the first flywheel assembly (3) and the second flywheel assembly (12).

5. The automatic inertia adjustment flywheel device for the test bench according to claim 1, characterized in that: The first flywheel assembly (3) includes a first left end cover (301), a first bearing (302), a first right end engagement cover (303) with external teeth, and a first flywheel (304). The first flywheel assembly (3) is rotatably mounted on the main shaft (1) via the first bearing (302). The first engagement sleeve (6) is provided with internal teeth that match the external teeth on the first right end engagement cover (303), and is mounted on the first right end engagement cover (303) of the first flywheel assembly (3) through the cooperation of the internal and external teeth, so as to realize the connection or separation between the first flywheel assembly (3) and the first main shaft (1).

6. The automatic inertia adjustment flywheel device for the test bench according to claim 1, characterized in that: The second flywheel assembly (12) includes a second right end cover (1201), a second bearing (1202), a second left end engagement cover (1203), and a second flywheel (1204). The second left end engagement cover (1203) is rotatably mounted on the main shaft (1) via the second bearing (1202). The outer surface of the second left end engagement cover (1203) is designed with external teeth. The inner surface of the second engagement sleeve (14) is designed with internal teeth that cooperate with the external teeth of the second left end engagement cover (1203) to achieve a detachable engagement connection between the second flywheel assembly and the main shaft (1).

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