Transmission part loading running-in test bench for agricultural machinery

Abstract

The utility model relates to a transmission part loading running-in test bench for agricultural machinery. The test bench comprises a platform; the left loading module and the right loading module are symmetrically arranged on the left side and the right side of the platform, and the left loading module and the right loading module are used for providing loading power; the driving module is fixed in the middle of the platform; the drive axle connecting and supporting assembly is arranged in the center of the platform, is connected with the drive module and is used for clamping and supporting a tested drive axle; the driving module and the tested drive axle are longitudinally arranged along the center line of the platform; the left loading module is connected to the left side of the tested drive axle through a first universal transmission shaft and a left output tool; the driving module is connected to the input end of the tested drive axle through a second universal transmission shaft; the right loading module is connected to the right side of the tested drive axle through a universal transmission shaft and a right output tool. According to the utility model, the efficiency and the accuracy of the drive axle running-in test are improved, and the reliability and the stability of the test are enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of performance testing of transmission components for agricultural machinery, and in particular relates to a load-bearing break-in test bench for transmission components of agricultural machinery. Background Technology

[0002] Transmission components for agricultural machinery, as a crucial part of the agricultural machinery transmission system, include tractor drive axles, transfer cases for rice harvesters, and transfer cases for wheat harvesters. These components have complex structures and require high precision in manufacturing. The assembly quality of these transmission components directly affects key performance indicators such as transmission efficiency, operating noise, and service life. Therefore, comprehensive and rigorous performance testing is particularly important during the production process of agricultural machinery transmission components. Furthermore, the wide variety of agricultural machinery, with corresponding agricultural machinery and transmission structures for different crops, necessitates that agricultural machinery transmission component loading and running-in test benches be able to support and load test specimens of various structures.

[0003] Existing agricultural machinery transmission component break-in test benches are relatively limited in function, with each bench only capable of testing one type of transmission product. Their primary function is to complete break-in tests, with limited ability to detect torque and speed at the loading end, making it difficult to meet the needs of comprehensive performance testing of the test components. Furthermore, the automation level for changing test components is generally low, requiring test personnel to spend considerable time and manpower installing and securing the drive axle and adjusting the drive loading module. This not only increases the workload of test personnel but also reduces testing efficiency.

[0004] With the continuous advancement of measurement and control methods and the rapid development of motor technology, modern agricultural machinery transmission component load break-in test benches have the ability to monitor and provide feedback on the operating noise, temperature, and vibration parameters of the test specimen in real time. This real-time monitoring and feedback of these parameters allows test personnel to more accurately understand the performance of the test specimen during the testing process, providing strong support for subsequent performance analysis and optimization.

[0005] Meanwhile, the agricultural machinery transmission component loading and break-in test bench can precisely control the speed and torque of the input end and the left and right loading ends of the test piece, enabling loading tests and differential tests that more closely resemble the actual application conditions of the transmission components. Through these tests, key indicators such as transmission efficiency, noise level, oil temperature changes, and the performance of the differential in the test piece can be comprehensively measured, providing a scientific basis for the performance evaluation and reliability verification of the transmission components.

[0006] In summary, with the continuous development of agricultural machinery transmission system technology and the increasing demands for its application, higher requirements are being placed on the performance and functionality of load-bearing break-in test benches for agricultural machinery transmission components. Therefore, it is necessary to develop a highly automated, fully functional, and precise load-bearing break-in test bench for agricultural machinery transmission components. Utility Model Content

[0007] To address the problems existing in the prior art, this utility model provides a load break-in test bench for agricultural machinery transmission components, which is used to conduct comprehensive performance and reliability tests on agricultural machinery transmission components.

[0008] This utility model is implemented as follows: a load-bearing break-in test bench for agricultural machinery transmission components, characterized in that it includes: a platform; a left loading module and a right loading module, symmetrically arranged on the left and right sides of the platform, the left and right loading modules being used to provide loading power; a drive module, fixed in the middle of the platform; a test piece connection support assembly, located at the center of the platform and connected to the drive module, used to clamp and support the test piece; the drive module and the test piece are arranged longitudinally along the centerline of the platform; the left loading module is connected to the left side of the test drive axle via a first universal joint drive shaft and a left output fixture; the drive module is connected to the input end of the test piece via a second universal joint drive shaft; the right loading module is connected to the right side of the test drive axle via a universal joint drive shaft and a right output fixture.

[0009] Further preferably, the left and right loading modules have the same structure, including: a reducer for adjusting the rotational speed during the loading process; a first torque-speed sensor connected to the reducer for monitoring the torque and rotational speed during the loading process; a coupling for connecting the loading motor in the loading module to transmit torque; a loading motor as a load to apply load to the loading end of the test specimen; a fixed base as a support structure for the loading module, fixedly installed on the lifting base; and a lifting mechanism assembly installed between the fixed base and the lifting base to drive the left and right loading modules to perform vertical lifting movements.

[0010] More preferably, the lifting mechanism assembly includes a lifting motor, which is connected to a worm gear transmission pair via a third coupling. A lead screw nut sleeve is fitted on the worm gear, and the lead screw nut sleeve is mounted on the lifting base.

[0011] Further preferably, the drive module includes: a connecting flange for connecting to the test piece; a support base, which serves as a support structure for the drive module and is mounted on a base to ensure the stability of the drive module; a bearing support, mounted on the support base, for supporting and fixing the bearings of the rotating components; a fourth coupling, connected between the bearing support and the second torque-speed sensor, for transmitting torque; the second torque-speed sensor, for monitoring torque and speed changes during the drive process; a fifth coupling, connected between the second torque-speed sensor and the drive motor; and the drive motor, as a power source, providing the rotational power required by the drive module.

[0012] Further preferably, the test specimen connection support assembly includes: a horizontal adjustment base for adjusting the horizontal position of the entire support assembly to ensure the stability of the support; a left lifting support and a right lifting support, respectively disposed on both sides of the horizontal adjustment base, for supporting and adjusting the height of the left and right sides of the test specimen; a front lifting support and a front second lifting support, disposed in front of the test specimen, for cooperating with the left and right lifting supports to support and adjust the height of the front part of the test specimen; and a rear lifting support, disposed behind the test specimen, cooperating with the front first lifting support and the front second lifting support to ensure stable support of the test specimen in the entire height direction.

[0013] A further preferred embodiment includes an oil collection tank, located below the test specimen, for collecting oil or lubricating oil that may be generated during the test.

[0014] More preferably, a translation screw mechanism is installed between the left lifting support and the right lifting support and the horizontal adjustment base, respectively, to realize the fine adjustment or translation of the test specimen support point in the horizontal direction.

[0015] The advantages and technical effects of this utility model are as follows: The agricultural machinery transmission component loading and break-in test bench proposed in this utility model has significant overall technical effects. Through a carefully designed platform structure, the test bench orderly combines key components such as the left loading module, right loading module, drive module, and test piece connection support assembly, forming a highly efficient and stable testing system. The symmetrical arrangement of the left and right loading modules can evenly apply loads to the loading end of the drive axle of the test piece, simulating actual working conditions and improving the accuracy and reliability of the test.

[0016] The drive module is fixed in the middle of the platform and connected to the test piece via a universal joint drive shaft, ensuring the smoothness and reliability of power transmission. The test piece connection support assembly has a stable structure and flexible adjustment, which can adapt to the testing needs of different types and specifications of agricultural machinery transmission components, improving the adaptability and flexibility of the test bench.

[0017] The loading module is equipped with key components such as a reducer, torque and speed sensors, couplings, and a loading motor. It can precisely adjust the speed during the loading process and monitor torque and speed changes in real time to ensure the accuracy of test data. The lifting mechanism assembly uses a lifting motor to drive a worm gear transmission pair, and achieves lifting movement through a lead screw and nut sleeve. Guided by a guide rod, the structure is compact and the transmission is smooth, improving the lifting accuracy and stability of the loading module.

[0018] Furthermore, the design of the horizontal adjustment base, left and right lifting supports, and front and rear lifting supports in the test specimen connection support assembly enables all-round, high-precision support and adjustment of the test specimen. The oil collection tank effectively collects oil or lubricating oil that may be generated during the test, keeping the test bench clean.

[0019] In summary, this invention improves the efficiency and accuracy of load break-in testing for transmission components in agricultural machinery, enhances the reliability and stability of the test, and provides strong technical support for the research and development and production of transmission components for agricultural machinery. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0021] Figure 2a This is a schematic diagram of the left loading module structure of this utility model;

[0022] Figure 2b yes Figure 2a Top view;

[0023] Figure 3a This is a schematic diagram of the right-loaded module structure;

[0024] Figure 3b yes Figure 3a Top view;

[0025] Figure 4a This is a schematic diagram of the driver module structure;

[0026] Figure 4b yes Figure 4a The left view;

[0027] Figure 5 This is a schematic diagram of the test specimen as a drive axle connection support assembly structure;

[0028] Figure 6a The test specimen is a schematic diagram of the connection, fixation, and loading of the gearbox of a rice harvester;

[0029] Figure 6b yes Figure 6a Top view.

[0030] In the diagram: 1. Left loading module; 101. Reducer; 102. First torque and speed sensor; 103. Lifting mechanism assembly; 1031. Lifting motor; 1032. Worm gear transmission pair; 1033. Lead screw nut sleeve; 104. Coupling; 105. Fixed base; 106. Loading motor; 107. Guide column and guide sleeve; 108. Lifting base; 109. Clamping sleeve; 2. First universal drive shaft; 3. Left output fixture; 4. Drive module; 401. Connecting flange; 402. Support seat; 403. Bearing seat support; 404. Fourth coupling; 405. Second torque and speed sensor; 406. Fifth coupling; 407. Base; 408. Drive motor; 409. Pulley tensioning mechanism; 5. Second universal joint drive shaft; 6. Test specimen connection support assembly; 601. Horizontal adjustment base; 602. Left translational lifting support; 603. Front lifting support; 604. Rear lifting support; 605. Test drive axle; 606. Oil collection tank; 607. Front second lifting pressure seat; 608. Right translational lifting support; 7. Right output fixture; 8. First and third universal joint drive shafts; 9. Right loading module; 10. Platform. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1 to 5 A load-bearing break-in test bench for agricultural machinery transmission components includes: a platform 10; a left loading module 1 and a right loading module 9, symmetrically arranged on the left and right sides of the platform 10, the left and right loading modules being used to apply loads; a drive module 4, fixed in the middle of the platform 10; and a test piece connection support assembly 6, located at the center of the platform 10, used to clamp and support the test piece. In this embodiment, the test piece is described using a test drive axle 605 as an example. The test involves a load-bearing break-in test of the agricultural machinery drive axle. The drive module 4 and the test drive axle 605 are arranged longitudinally along the centerline of the platform 10. The left loading module 1 is connected to the left side of the test drive axle 605 via a first universal drive shaft 2 and a left output fixture 3. The drive module 4 is connected to the input end of the test drive axle 605 via a second universal drive shaft 5. The right loading module 9 is connected to the right side of the test drive axle 605 via a universal drive shaft 8 and a right output fixture 7.

[0033] The test bench, through its meticulously designed platform structure, systematically integrates the left loading module, right loading module, drive module, and test specimen connection support assembly, forming a highly efficient and stable testing system. The symmetrical arrangement of the left and right loading modules evenly accommodates different loading modes of the test drive axle, including differential speed testing, simulating stress conditions under actual working conditions. If the test specimen is replaced with a rice or wheat harvester, the drive module can be rotated 90 degrees and placed horizontally on the platform. The pulley on the connecting flange 401 is connected to the drive belt of the test specimen (rice or wheat harvester), and the position of the tensioning wheel on the tensioning mechanism 409 is adjusted to tension the drive belt. The test specimen connection support assembly is responsible for clamping and supporting the test drive axle; its structure is robust, its adjustment flexible, and it can adapt to the testing needs of different types of agricultural machinery transmission components. The entire test bench is arranged longitudinally along the platform's centerline, with a compact layout and convenient operation. In summary, this test bench not only improves the efficiency and accuracy of load break-in tests for agricultural machinery transmission components, but also greatly enhances the reliability and stability of the tests, providing strong technical support for the research and development and production of transmission components for agricultural machinery.

[0034] For further recommendations, please refer to [link / reference]. Figure 2a , Figure 2b and Figure 3a , Figure 3b The left and right loading modules have identical structures, including: a reducer 101 for adjusting the rotational speed during loading; a first torque-speed sensor 102 connected to the reducer for monitoring torque and rotational speed during loading; a coupling 104 for connecting the loading motor 106 in the loading module to transmit torque; the loading motor 106 for applying load to the test specimen; a fixed base 105 as a support structure for the loading module; and a lifting mechanism assembly 103 installed between the fixed base 105 and the lifting base 108 to drive the left and right loading modules to move vertically. The identical structures of the left and right loading modules, equipped with key components such as a reducer, torque-speed sensor, coupling, and loading motor, enable precise adjustment of the rotational speed during loading and real-time monitoring of torque and speed changes, ensuring the accuracy and reliability of test data. Simultaneously, the loading module achieves vertical lifting movement through the lifting mechanism assembly, offering flexible adjustment and strong adaptability, meeting the testing requirements of different types of agricultural machinery transmission components.

[0035] Further preferably, the lifting mechanism assembly includes a lifting motor 1031, which is connected to a worm gear transmission pair 1032 via a third coupling. A lead screw nut sleeve 1033 is mounted on the worm gear and installed on the lifting base 108. The lifting mechanism assembly uses a lifting motor to drive the worm gear transmission pair, achieving lifting motion through the lead screw nut sleeve. This results in a compact structure, smooth transmission, and effectively improves the lifting accuracy and stability of the loading module. The clamping sleeve 109 is fixed to the lifting base 108 and includes a clamping sleeve 1091 and a screw 1092. Tightening the screw 1092 locks the lifting base 108 at a predetermined height.

[0036] For further recommendations, please refer to [link / reference]. Figure 4a and Figure 4b The drive module 4 includes: a connecting flange 401 with a pulley for connecting to the drive end of the test drive axle; a support base 402, mounted on a base 407 as a support structure for the drive module, ensuring its stability; a bearing support 403, mounted on the support base, for supporting and fixing the bearings of the rotating components; a fourth coupling 404, connected between the bearing support and a second torque-speed sensor, for transmitting torque; a second torque-speed sensor 405, for monitoring torque and speed changes during the drive process; a fifth coupling 406, connected between the second torque-speed sensor and a drive motor 408; the drive motor 408, as a power source, provides the rotational power required by the drive module; and a tensioning mechanism 409, which can be mounted on the left or right side of the drive module, for tensioning the drive belt in belt drives. Inside the drive module, the support base is securely mounted on the base, providing solid support for the entire module and ensuring test stability. The bearing base precisely supports and fixes the bearings of the rotating components, reducing friction and wear, and improving test efficiency and accuracy. In terms of power transmission, the fourth and fifth couplings connect the drive motor to the torque and speed sensor, and the torque and speed sensor to the drive motor, respectively, ensuring smooth transmission of torque and speed. The torque and speed sensor can monitor torque and speed changes in real time during the drive process, providing strong assurance for the accuracy of test data.

[0037] For further recommendations, please refer to [link / reference]. Figure 5The test specimen connection support assembly 6 includes: a horizontal adjustment base 601, used to adjust the horizontal position of the entire support assembly to ensure support stability; a left translational lifting top support 602 and a right translational lifting top support 608, respectively disposed on both sides of the horizontal adjustment base, used to support and adjust the height of the left and right sides of the test specimen; a front lifting support 603 and a front second lifting support 607, and a rear lifting support 604, which can be used individually or together to support and fix the middle part of the test specimen, ensuring stable support of the test drive axle along its entire length. The design of its drive axle connection support assembly is particularly outstanding. Through the ingenious combination of the horizontal adjustment base, the left and right translational lifting top supports, and the front and rear lifting pressure seats, it achieves all-round, high-precision support and adjustment of the test specimen drive axle.

[0038] In the above structure, the horizontal adjustment base ensures the horizontal position of the support assembly, providing a stable foundation for subsequent lifting adjustments. The left-right sliding lifting top support and the front-rear lifting support can flexibly adjust the height of the test specimen's drive axle at different positions, ensuring its stability throughout the testing process.

[0039] This design not only improves the accuracy of the test but also greatly enhances the adaptability and flexibility of the test bench, easily meeting the testing needs of different types of agricultural machinery transmission components. Please refer to [link / reference]. Figure 6a and Figure 6b For example, it is used for the load break-in of the drive box of a rice harvester.

[0040] A further preferred embodiment includes an oil collection tank 606, located below the test specimen, for collecting oil or lubricating oil that may be generated during the test.

[0041] More preferably, the left and right translational lifting supports have the same structure; including a lifting support 6021 and a translation component 6022, which can be adjusted according to the specific support position and height of the test specimen on the left and right.

[0042] In summary, the test bench of this invention, through its meticulously designed platform structure, orderly combines key components such as the left loading module, right loading module, drive module, and test specimen connection support assembly, forming a highly efficient and stable testing system. The symmetrical arrangement of the left and right loading modules allows for balanced application of loading power to the test drive axle, simulating actual working conditions and improving the accuracy and reliability of the test.

[0043] 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. A test bench for loading and running-in of a transmission element for agricultural machines, characterized in that it comprises: include: Platform (10); left loading module (1) and right loading module (9) are symmetrically arranged on the left and right sides of the platform (10), and the left and right loading modules are used to provide loading power; The drive module (4) is fixed in the middle of the platform (10); The test specimen connection support assembly (6) is located at the center of the platform (10) and connected to the drive module (4) for clamping and supporting the test specimen; The drive module (4) and the test piece are arranged longitudinally along the center line of the platform (10); the left loading module (1) is connected to the left side of the test drive axle (605) via the first universal drive shaft (2) and the left output fixture (3); The drive module (4) is connected to the input end of the test drive bridge (605) via the second universal drive shaft (5); the right loading module (9) is connected to the right side of the test drive bridge (605) via the universal drive shaft (8) and the right output fixture (7).

2. The loading bench test machine for the transmission of agricultural machinery according to claim 1, characterized in that: The left and right loading modules have the same structure, including: a reducer (101) for adjusting the rotational speed during the loading process; a first torque and speed sensor (102) connected to the reducer for monitoring the torque and rotational speed during the loading process; a coupling (104) for connecting the loading motor (106) in the loading module to transmit torque; the loading motor (106) for loading the test specimen; a fixed base (105) as a support structure for the loading module, fixedly installed on the lifting base (108); and a lifting mechanism assembly (103) installed between the fixed base (105) and the lifting base (108) to drive the left and right loading modules to perform vertical lifting movements.

3. The loading bench test machine for the transmission of agricultural machinery according to claim 2, characterized in that: The lifting mechanism assembly includes a lifting motor (1031), which is connected to a worm gear transmission pair (1032) via a third coupling. A lead screw nut sleeve (1033) is mounted on the worm gear and installed on the lifting base (108).

4. The loading bench test machine for the transmission of agricultural machinery according to claim 2, characterized in that: The drive module (4) includes: a connecting flange (401) for connecting to the test drive axle (605); a support base (402) for mounting on the base base (407) as a support structure for the drive module to ensure the stability of the drive module; a bearing support (403) mounted on the support base for supporting and fixing the bearings of the rotating components; a fourth coupling (404) connected between the bearing support and the second torque speed sensor for transmitting torque; a second torque speed sensor (405) for monitoring torque and speed changes during the drive process; a fifth coupling (406) connected between the second torque speed sensor and the drive motor (408); and a drive motor for providing the rotational power required by the drive module as a power source.

5. The loading bench test machine for agricultural transmission parts according to claim 1, characterized in that: The test specimen connection support assembly (6) includes: a horizontal adjustment base (601) for adjusting the horizontal position of the entire support assembly to ensure the stability of the support; The left lifting support (602) and the right lifting support (608) are respectively set on both sides of the horizontal adjustment base to support and adjust the left and right heights of the test specimen; The first lifting support (603) and the second lifting support (607) are located in front of the test specimen and are used to support the front of the test specimen and adjust its height in conjunction with the left and right lifting supports. The rear lifting support (604) is located behind the test specimen and works in conjunction with the first and second lifting supports to ensure stable support of the test specimen along its entire length.

6. The loading bench test machine for agricultural transmission parts according to claim 5, characterized in that: It also includes an oil collection tank (606), which is located below the test specimen to collect oil or lubricating oil that may be generated during the test.

7. The loading bench test machine for agricultural transmission parts according to claim 5, characterized in that: A translation screw mechanism (609) is installed between the left lifting support (602) and the right lifting support (608) and the horizontal adjustment base, respectively, to realize the fine adjustment or translation of the test specimen support point in the horizontal direction.

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