Durability test bench for agricultural machine front-drive transmission

Abstract

The invention, which relates to the technical field of agricultural machinery testing, discloses a durability test bench for a front-drive transmission of an agricultural machinery, comprising a base mechanism, a main body mechanism, a connecting mechanism, a conveying mechanism and a detection mechanism, the conveying mechanism being used for replacing a plurality of main body mechanisms; the detection mechanism is used for detecting heat inside the detection mechanism, and the two external monitors can detect the main body mechanism in the using process. During use, in the detection process of the transmission, key parameters such as time, load, noise level and oil temperature can be recorded, meanwhile, test data can be deeply analyzed, the durability of the transmission can be evaluated, a perfect monitoring and evaluation system and a standard data recording and analysis process are achieved, and the detection accuracy of the transmission is improved. The transmission durability testing efficiency and accuracy can be improved, and it can be ensured that the quality of the transmission meets the preset standard or the expected target.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery testing, in particular to a durability test bench for a front-wheel drive transmission of an agricultural machinery. Background Art

[0002] The front-wheel drive transmission of agricultural machinery is an important component in the front-wheel drive system of agricultural machinery (especially tractors). It is responsible for changing the transmission ratio, thereby adjusting the driving speed or traction of the agricultural machinery. The front-wheel drive transmission of agricultural machinery is usually composed of two major parts: the speed transmission mechanism and the operating mechanism. The speed transmission mechanism includes the housing, the upper cover, the rear cover, the first shaft, the second shaft, the intermediate shaft, the reverse shaft and the gears of each gear. Together, they complete the input, output and speed changes of power. The operating mechanism includes the self-locking device, the interlocking device, the reverse gear safety device, the shift fork, the fork shaft, the shift shift lever and other components, which are used to complete the operation of the transmission. In summary, the front-wheel drive transmission of agricultural machinery is a key component in the front-wheel drive system of agricultural machinery. The quality of its performance directly affects the operating efficiency and driving comfort of the agricultural machinery. Therefore, when using and maintaining agricultural machinery, special attention should be paid to the inspection and maintenance of the front-wheel drive transmission.

[0003] With the continuous advancement of agricultural modernization, the status of agricultural machinery in agricultural production has become increasingly prominent, becoming a key factor in improving agricultural production efficiency and operation quality. As the core component of the agricultural machinery transmission system, the performance of the front-wheel drive transmission directly affects the overall operating efficiency of the agricultural machinery. However, the current methods used to evaluate the durability of the front-wheel drive transmission generally face challenges such as long test cycles, single test environments, and difficulty in truly restoring actual operating conditions. Specifically, existing durability test methods are often limited to laboratory environments, and it is difficult to fully simulate the complex and changeable working conditions encountered by agricultural machinery in actual field operations. This limitation leads to a significant deviation between the test results and the actual use conditions, which makes the evaluation of the long-term performance of the transmission not accurate and reliable enough; Therefore, developing a test method that can more closely match the actual working environment and efficiently and accurately evaluate the durability of front-wheel drive transmissions is of great significance for improving the overall performance of agricultural machinery and extending its service life. Summary of the invention

[0004] The purpose of the present invention is to provide a durability test bench for a front-wheel drive transmission of an agricultural machinery, so as to solve the problem that the traditional detection method mentioned in the above background is too single, making the long-term performance evaluation of the transmission not accurate and reliable enough.

[0005] To achieve the above object, the present invention provides the following technical solution: a durability test bench for a front-wheel drive transmission of an agricultural machinery, comprising a base mechanism, a main body mechanism, a connecting mechanism, a conveying mechanism and a detecting mechanism, The main body mechanism, the connecting mechanism and the detecting mechanism are located on the top of the base mechanism, and are used to maintain stability when the main body mechanism, the connecting mechanism and the detecting mechanism are mutually transmitted; The conveying mechanism is located on the side of the base mechanism and is used to complete the replacement of multiple main body mechanisms; The detection mechanism is used to be installed between the outer walls of the main mechanism. When the high-pressure gas generated inside the main mechanism is discharged, the moisture inside the detection mechanism is heated, and then the sealing plug and the arrow indicator are pushed upward by steam to detect the internal heat. The two external sets of monitors can detect the main mechanism during use.

[0006] Preferably, the detection mechanism includes two side plates, a slider is fixedly installed on one side of the outer wall of the two side plates, a fixed plate is fixedly installed on one side of the outer wall of the two side plates, an extension plate is slidably embedded in the outer wall of the two fixed plates, a linkage plate is fixedly installed on the bottom of the two extension plates, an external cylinder is fixedly installed on one side of the outer wall of the two side plates, and the telescopic end of each external cylinder is fixedly installed on one side of the outer wall of the linkage plate.

[0007] Preferably, a detection frame is fixedly installed on the top of the two extension plates, a cross sliding frame is fixedly installed on one side of the inner wall of the two detection frames, a built-in cylinder is fixedly installed on the sliding ends of the two cross sliding frames, a rectangular plate is fixedly installed on the telescopic ends of the two built-in cylinders, and a group of monitoring instruments is fixedly installed on one side of the outer wall of the two rectangular plates.

[0008] Preferably, a water tank is fixedly installed on the top of one of the two detection frames, and a bellows is fixedly connected to the bottom of the water tank. An observation frame is fixedly installed on the top of one of the two detection frames, and the output end of the water tank is fixedly connected to the input end of the observation frame. A sealing plug is movably embedded in the inner surface wall of the observation frame, and an arrow indicator is fixedly installed on the top of the sealing plug.

[0009] Preferably, the conveying mechanism includes a fixed frame, two extension plates are fixedly installed on one side of the outer wall of the fixed frame, sliding plates are fixedly installed on the top of the two extension plates, sliding seats are slidably embedded in the outer walls of the two sliding plates, electric telescopic frames are fixedly installed on the top of the two sliding seats, and placement plates are fixedly installed on the top of the two electric telescopic frames.

[0010] Preferably, the connecting mechanism comprises a fixed seat, a group of movable grooves are opened on the top of the fixed seat, a group of sliding bars are slidably embedded in the inner surface walls of the movable grooves, and a linkage seat is fixedly installed between the tops of the group of sliding bars.

[0011] Preferably, two connecting rods are fixedly installed on the top of the linkage seat, an annular plate is fixedly installed between the tops of the two connecting rods, an annular groove is opened inside the annular plate, a driving block is circularly rotated on the inner surface wall of the annular groove, and a connecting socket is fixedly installed on the inner surface wall of the driving block.

[0012] Preferably, the main mechanism includes a transmission body, a ventilation valve is provided on the top of the transmission body, a transmission rod is fixedly connected to the rotating end of the transmission body, and two mounting plates B are fixedly installed on the bottom of the transmission body.

[0013] Preferably, the base mechanism includes a main beam plate, the outer wall of the main beam plate is provided with a group of sliding grooves, the bottom of the main beam plate is fixedly installed with a mounting adjustment seat, the top of the main beam plate is fixedly installed with a mounting plate A, the top of the mounting plate A is fixedly installed with a speed detection motor, and the rotating end of the speed detection motor is fixedly installed with a connecting column.

[0014] Preferably, the bottom of the main beam plate is fixedly installed with the top of the fixed frame, the outer walls of the two groups of sliders are slidably embedded in the sliding groove, the bottom of the fixed seat is fixedly installed with the top of the main beam plate, and the bottom of the mounting plate B is fixedly installed with the top of the main beam plate by screws.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the present invention is in use, during the detection process of the transmission, it can record key parameters such as time, load, noise level, oil temperature, etc. At the same time, it can also conduct in-depth analysis of the test data to evaluate the durability of the transmission. The perfect monitoring and evaluation system and standardized data recording and analysis process will help to improve the efficiency and accuracy of the transmission durability test, which not only helps to ensure that the quality of the transmission meets the preset standards or expected goals.

[0016] When the present invention is in use, this detection method can detect transmissions of different sizes and models, thereby improving the adaptability of the device when in use.

[0017] The present invention is in use. The device can be operated according to regulations when in use, and the detailed description of how to connect the transmission device and the monitoring equipment is helpful to reduce operating errors and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a main structural stereogram of a durability test bench for a front-wheel drive transmission of an agricultural machine according to the present invention; Figure 2 It is a side structural plan view of a durability test bench for a front-wheel drive transmission of an agricultural machine according to the present invention; Figure 3A three-dimensional diagram of a base mechanism in a durability test bench for a front-wheel drive transmission of an agricultural machine according to the present invention; Figure 4 It is a stereoscopic diagram of the main mechanism in a durability test bench for a front-wheel drive transmission of an agricultural machine according to the present invention; Figure 5 This is a three-dimensional exploded view of a connection mechanism in a durability test bench for a front-wheel drive transmission of an agricultural machine according to the present invention; Figure 6 This is a three-dimensional exploded view of a conveying mechanism in a durability test bench for a front-wheel drive transmission of an agricultural machinery according to the present invention; Figure 7 This is a three-dimensional exploded view of a detection mechanism in a durability test bench for a front-wheel drive transmission of an agricultural machine according to the present invention; Figure 8 It is a three-dimensional exploded view of the detection mechanism part in a durability test bench of a front-wheel drive transmission of an agricultural machinery according to the present invention; Fig. 9 This is an enlarged view of structure A in a durability test bench for a front-drive transmission for agricultural machinery according to the present invention; Fig.10 The present invention is a planar cross-sectional view of a detection mechanism in a durability test bench for a front-wheel drive transmission of an agricultural machinery.

[0019] In the figure: 1, base mechanism; 11, main beam plate; 111, sliding groove; 12, installation adjustment seat; 13, mounting plate A; 14, speed detection motor; 141, connecting column; 2, main mechanism; 21, transmission body; 211, breathable valve; 212, transmission rod; 22, mounting plate B; 3, connecting mechanism; 31, fixed seat; 311, moving groove; 312, slide bar; 32, linkage seat; 33, connecting rod; 34, annular plate; 341, annular groove; 342, drive block; 35, connecting seat; 4, output Conveying mechanism; 41. fixed frame; 42. extension plate; 43. sliding plate; 44. slide seat; 45. electric telescopic frame; 451. placement plate; 5. detection mechanism; 51. side plate; 511. slider; 52. fixed plate; 521. extension plate; 522. linkage plate; 53. external cylinder; 54. detection frame; 55. cross sliding frame; 56. built-in cylinder; 561. rectangular plate; 562. monitor; 57. water tank; 571. bellows; 58. observation frame; 581. sealing plug; 582. arrow indicator. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] Reference Figure 1-Figure 10 As shown: The present invention provides a durability test bench for a front-wheel drive transmission of an agricultural machinery, comprising a base mechanism 1, a main body mechanism 2, a connecting mechanism 3, a conveying mechanism 4 and a detection mechanism 5. The main body mechanism 2, the connecting mechanism 3 and the detecting mechanism 5 are located on the top of the base mechanism 1, and are used to maintain stability when the main body mechanism 2, the connecting mechanism 3 and the detecting mechanism 5 are mutually transmitted; The conveying mechanism 4 is located on the side of the base mechanism 1 and is used to replace multiple main body mechanisms 2; The detection mechanism 5 is used to be sleeved between the outer walls of the main body mechanism 2. When the high-pressure gas generated inside the main body mechanism 2 is discharged, the moisture inside the detection mechanism 5 is heated, and then the sealing plug 581 and the arrow indicator 582 are pushed upward by steam to detect the heat inside, and the two sets of external monitoring instruments 562 can detect the main body mechanism 2 during use; The detection mechanism 5 includes two side plates 51, one side of the outer wall of the two side plates 51 is fixedly installed with a slider 511, one side of the outer wall of the two side plates 51 is fixedly installed with a fixing plate 52, the outer wall of the two fixing plates 52 is slidably embedded with an extension plate 521, the bottom of the two extension plates 521 is fixedly installed with a linkage plate 522, one side of the outer wall of the two side plates 51 is fixedly installed with an external cylinder 53, and each telescopic end of the external cylinder 53 is fixedly installed with one side of the outer wall of the linkage plate 522, the top of the two extension plates 521 is fixedly installed with a detection frame 54, and one side of the inner wall of the two detection frames 54 is fixedly installed with a cross sliding frame 55, and the two The sliding ends of the cross sliding frames 55 are fixedly installed with built-in cylinders 56, the telescopic ends of the two built-in cylinders 56 are fixedly installed with rectangular plates 561, and one side of the outer walls of the two rectangular plates 561 is fixedly installed with a group of monitoring instruments 562. A water tank 57 is fixedly installed on the top of one of the two detection frames 54, and a bellows 571 is fixedly connected to the bottom of the water tank 57. An observation frame 58 is fixedly installed on the top of one of the two detection frames 54, and the output end of the water tank 57 is fixedly connected to the input end of the observation frame 58. A sealing plug 581 is movably embedded in the inner surface wall of the observation frame 58, and an arrow indicator 582 is fixedly installed on the top of the sealing plug 581.

[0022] In this embodiment, after starting the device, the speed change detection motor 14 starts to run in the power-on state, and its output end generates rotational power. This power is transmitted to the interior of the transmission body 21 through the connection base 35 as a transmission medium, and with the cooperation of the drive block 342 and the annular groove 341, it starts to work. During the operation of the transmission body 21, the two sets of external monitors 562 play a key role. They can accurately detect the vibration, noise and load conditions generated by the operation of the transmission body 21, and transmit these data to the external collection device in real time for subsequent analysis. At the same time, when heat is generated inside the transmission body 21, this heat will be transmitted to the water tank 57 connected to it. The water in the water tank 57 is heated by the heat to form high-temperature and high-pressure steam. This steam will then generate thrust on the sealing plug 581 to move it upward. Since the observation frame 58 is designed to be transparent, it can be clearly seen that the arrow indicator 582 moves along with the sealing plug. The movement of the plug 581 points to the marking line set outside, so that the inspector can intuitively judge the temperature condition of the transmission body 21 by observing the position of the arrow indicator mark 582. During the test, we need to pay close attention to the operation of the transmission according to the parameters and conditions set in the test plan, and record relevant data, such as time, load, noise level, oil temperature, etc. In order to ensure the controllability and consistency of the test conditions, we need to inspect and maintain the transmission regularly. Once an abnormality is found, we need to record and adjust the test parameters or repair the test equipment in time. After the test is completed, we need to conduct an in-depth analysis of the data recorded during the test to evaluate the durability of the transmission, which includes measuring and analyzing parameters such as wear, noise and vibration levels, leakage, temperature, etc., and comparing the test results with preset standards or expected goals. Through this process, we can determine whether the transmission meets the durability requirements, thereby providing a strong basis for its subsequent use and maintenance. Example

[0023] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the base mechanism 1 includes a main beam plate 11, the outer wall of the main beam plate 11 is provided with a group of sliding grooves 111, the bottom of the main beam plate 11 is fixedly installed with a mounting adjustment seat 12, the top of the main beam plate 11 is fixedly installed with a mounting plate A13, the top of the mounting plate A13 is fixedly installed with a speed detection motor 14, and the rotating end of the speed detection motor 14 is fixedly installed with a connecting column 141; The main mechanism 2 includes a transmission body 21, a ventilation valve 211 is provided on the top of the transmission body 21, a transmission rod 212 is fixedly connected to the rotating end of the transmission body 21, and two mounting plates B22 are fixedly installed on the bottom of the transmission body 21; The connecting mechanism 3 includes a fixed seat 31, a group of movable grooves 311 are opened on the top of the fixed seat 31, and the inner surface walls of the group of movable grooves 311 are slidably embedded with sliding bars 312, and a linkage seat 32 is fixedly installed between the tops of a group of sliding bars 312, and two connecting rods 33 are fixedly installed on the top of the linkage seat 32, and an annular plate 34 is fixedly installed between the tops of the two connecting rods 33, and an annular groove 341 is opened inside the annular plate 34, and a driving block 342 is annularly rotated on the inner surface wall of the annular groove 341, and a connecting base 35 is fixedly installed on the inner surface wall of the driving block 342.

[0024] In this embodiment, when the equipment is in use, the transmission body 21 must first be securely placed on the top of the two placement plates 451. Then, driven by external force, the two slides 44 will be embedded and moved along the outer wall of the sliding plate 43. This action prompts the two slides 44 and the components they are fixed to slide to one side together, thereby smoothly pushing the transmission body 21 to the top of the main beam plate 11. At this time, the inspection personnel will use screws to firmly fix the transmission body 21 on the top of the main beam plate 11. Next, the connecting bracket 35 needs to be moved to one side. During the movement, a group of slide bars 312 at the bottom will be guided by the moving groove 311 to ensure that the connecting bracket 35 can be smoothly mounted on the rotating end of the transmission body 21. By using the connecting bracket 35 as a transmission medium, an effective connection is achieved between the transmission body 21 and the speed detection motor 14. Example

[0025] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.10 As shown, the main mechanism 2 includes a transmission body 21, a ventilation valve 211 is provided on the top of the transmission body 21, a transmission rod 212 is fixedly connected to the rotating end of the transmission body 21, and two mounting plates B22 are fixedly installed on the bottom of the transmission body 21; The conveying mechanism 4 includes a fixed frame 41, two extension plates 42 are fixedly installed on one side of the outer wall of the fixed frame 41, and sliding plates 43 are fixedly installed on the tops of the two extension plates 42. Sliding seats 44 are slidably embedded in the outer walls of the two sliding plates 43, and electric telescopic frames 45 are fixedly installed on the tops of the two sliding seats 44. Placement plates 451 are fixedly installed on the tops of the two electric telescopic frames 45; The detection mechanism 5 includes two side plates 51, one side of the outer wall of the two side plates 51 is fixedly installed with a slider 511, one side of the outer wall of the two side plates 51 is fixedly installed with a fixing plate 52, the outer wall of the two fixing plates 52 is slidably embedded with an extension plate 521, the bottom of the two extension plates 521 is fixedly installed with a linkage plate 522, one side of the outer wall of the two side plates 51 is fixedly installed with an external cylinder 53, and each telescopic end of the external cylinder 53 is fixedly installed with one side of the outer wall of the linkage plate 522, the top of the two extension plates 521 is fixedly installed with a detection frame 54, and one side of the inner wall of the two detection frames 54 is fixedly installed with a cross sliding frame 55, and the two The sliding ends of the cross sliding frames 55 are fixedly installed with built-in cylinders 56, the telescopic ends of the two built-in cylinders 56 are fixedly installed with rectangular plates 561, and one side of the outer walls of the two rectangular plates 561 is fixedly installed with a group of monitoring instruments 562. A water tank 57 is fixedly installed on the top of one of the two detection frames 54, and a bellows 571 is fixedly connected to the bottom of the water tank 57. An observation frame 58 is fixedly installed on the top of one of the two detection frames 54, and the output end of the water tank 57 is fixedly connected to the input end of the observation frame 58. A sealing plug 581 is movably embedded in the inner surface wall of the observation frame 58, and an arrow indicator 582 is fixedly installed on the top of the sealing plug 581.

[0026] In this embodiment, under the guidance of the sliding groove 111, the two sets of sliders 511 are embedded and moved. This action enables the two detection frames 54 to be accurately positioned on both sides of the transmission body 21. Subsequently, the two external cylinders 53 start to work, and they pull the linkage plate 522 to move inward respectively. Since the linkage plate 522, the extension plate 521 and the detection frame 54 are all fixedly connected, the two detection frames 54 can be smoothly merged under the drive of the two external cylinders 53, and the transmission body 21 is effectively installed inside it. At the same time, the bellows 571 and the transmission body 21 are connected. The air-permeable valve 211 on the top of the transmission body 21 is connected, which provides the necessary conditions for the subsequent detection work. In addition, the two sets of cross sliding frames 55 also play a key role. Through their own driving and adjusting functions, they enable the two built-in cylinders 56 and their fixed components to maintain an optimal working position. Subsequently, the two built-in cylinders 56 begin to push the two rectangular plates 561 closer to the outer wall of the transmission body 21 respectively. In this way, the two sets of monitors 562 can be accurately located on both sides of the transmission body 21, making sufficient preliminary preparations for the subsequent detection work.

[0027] The working principle of the whole mechanism is as follows: first, when the equipment is in use, the transmission body 21 is placed on the top of the two placement plates 451, and then under the action of external force, the two slide seats 44 are respectively embedded and moved between the outer walls of the sliding plates 43, so that the two slide seats 44 and the components fixed thereto can be pushed to one side, and then the transmission body 21 is moved to the top of the main beam plate 11. At this time, the inspection personnel fix the transmission body 21 on the top of the main beam plate 11 with screws, and then move the connecting seat 35 to one side. A group of slide bars 312 at the bottom can keep the connecting seat 35 set against the rotating end of the transmission body 21 under the cooperation of the moving groove 311, so as to transmit the transmission through the connecting seat 35. The medium realizes the connection between the transmission body 21 and the speed detection motor 14, and then the two sets of sliders 511 are respectively embedded and moved in the sliding groove 111, driving the two detection frames 54 to be located on both sides of the transmission body 21, and under the drive of the two external cylinders 53, the linkage plates 522 are respectively pulled inward. Because the linkage plate 522, the extension plate 521 and the detection frame 54 are in a fixed connection state, the two detection frames 54 can be kept merged under the drive of the two external cylinders 53, and the transmission body 21 is effectively installed inside it, and then the bellows 571 can be kept in communication with the breathable valve 211 on the top of the transmission body 21, and under the drive of the two sets of cross sliding frames 55 themselves Under adjustment, the two built-in cylinders 56 and the components fixed therewith can be driven to maintain a suitable position respectively, and then the two built-in cylinders 56 push the two rectangular plates 561 to approach the outer wall of the transmission body 21 respectively. The two sets of monitors 562 can be located on both sides of the transmission body 21 to provide preliminary preparation for the detection. When the starting device speed change detection motor 14 is powered on, its output end can generate rotation, and then with the connection base 35 as the transmission medium (the driving block 342 is driven and connected to the inside of the annular groove 341), this transmission can be transmitted to the inside of the transmission body 21. When the transmission body 21 is in operation, the two sets of external monitors 562 can detect the vibration, noise and The load is effectively detected and transmitted to the inside of the external collection device. When the transmission body 21 generates heat inside, the heat is transmitted to the inside of the water tank 57, so that the water in the water tank 57 is heated to form high-temperature and high-pressure steam, and then this steam will push the sealing plug 581, thereby pushing the sealing plug 581 to move upward. Since the observation frame 58 is set to a transparent state, the arrow indicator 582 can be kept pointing to the marking line set outside, so that the inspection personnel can observe the temperature of the transmission body 21. According to the parameters and conditions set in the test plan, during the test process, pay close attention to the operation of the transmission and record relevant data, such as time, load, noise level, oil temperature, etc. During the test process, the transmission is regularly inspected and maintained.Ensure the controllability and consistency of test conditions. When abnormal conditions are found, record and adjust test parameters or repair test equipment in a timely manner, analyze the data recorded during the test, and evaluate the durability of the transmission. This includes measuring and analyzing parameters such as wear, noise and vibration levels, leakage, temperature, etc., comparing the test results with the preset standards or expected goals, and judging whether the transmission meets the durability requirements.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A durability test bench for a front-wheel drive transmission of an agricultural machine, comprising a base mechanism (1), a main body mechanism (2), a connecting mechanism (3), a conveying mechanism (4) and a detection mechanism (5), characterized in that: The main body mechanism (2), the connecting mechanism (3) and the detecting mechanism (5) are located on the top of the base mechanism (1) and are used to maintain stability when the main body mechanism (2), the connecting mechanism (3) and the detecting mechanism (5) are transmitting to each other. The conveying mechanism (4) is located on the side of the base mechanism (1) and is used to replace the multiple main body mechanisms (2); The detection mechanism (5) is used to be sleeved between the outer walls of the main body mechanism (2). When the high-pressure gas generated inside the main body mechanism (2) is discharged, the moisture inside the detection mechanism (5) is heated, and then the sealing plug (581) and the arrow indicator (582) are pushed upward by steam, thereby detecting the heat inside. The two sets of external monitoring instruments (562) can detect the main body mechanism (2) during use.

2. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 1, characterized in that: The detection mechanism (5) comprises two side plates (51), one side of the outer wall of the two side plates (51) is fixedly mounted with a slider (511), one side of the outer wall of the two side plates (51) is fixedly mounted with a fixing plate (52), the outer wall of the two fixing plates (52) is slidably embedded with an extension plate (521), the bottom of the two extension plates (521) is fixedly mounted with a linkage plate (522), one side of the outer wall of the two side plates (51) is fixedly mounted with an external cylinder (53), and the telescopic end of each external cylinder (53) is fixedly mounted to one side of the outer wall of the linkage plate (522).

3. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 2, characterized in that: A detection frame (54) is fixedly mounted on the top of the two extension plates (521), a cross sliding frame (55) is fixedly mounted on one side of the inner wall of the two detection frames (54), a built-in cylinder (56) is fixedly mounted on the sliding ends of the two cross sliding frames (55), a rectangular plate (561) is fixedly mounted on the telescopic ends of the two built-in cylinders (56), and a set of monitoring instruments (562) is fixedly mounted on one side of the outer wall of the two rectangular plates (561).

4. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 3, characterized in that: A water tank (57) is fixedly mounted on the top of one of the two detection frames (54), a bellows (571) is fixedly connected to the bottom of the water tank (57), an observation frame (58) is fixedly mounted on the top of one of the two detection frames (54), and the output end of the water tank (57) is fixedly connected to the input end of the observation frame (58), a sealing plug (581) is movably embedded in the inner surface wall of the observation frame (58), and an arrow indicator (582) is fixedly mounted on the top of the sealing plug (581).

5. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 4, characterized in that: The conveying mechanism (4) comprises a fixed frame (41), two extension plates (42) are fixedly mounted on one side of an outer wall of the fixed frame (41), a sliding plate (43) is fixedly mounted on the top of the two extension plates (42), a sliding seat (44) is slidably embedded in the outer walls of the two sliding plates (43), an electric telescopic frame (45) is fixedly mounted on the top of the two sliding seats (44), and a placement plate (451) is fixedly mounted on the top of the two electric telescopic frames (45).

6. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 5, characterized in that: The connecting mechanism (3) comprises a fixed seat (31), a group of movable grooves (311) are provided on the top of the fixed seat (31), a group of sliding bars (312) are slidably embedded in the inner surface walls of the movable grooves (311), and a linkage seat (32) is fixedly installed between the tops of the group of sliding bars (312).

7. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 6, characterized in that: Two connecting rods (33) are fixedly mounted on the top of the linkage seat (32); an annular plate (34) is fixedly mounted between the tops of the two connecting rods (33); an annular groove (341) is provided inside the annular plate (34); a driving block (342) is rotatably mounted on the inner surface wall of the annular groove (341); and a connecting seat (35) is fixedly mounted on the inner surface wall of the driving block (342).

8. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 7, characterized in that: The main body mechanism (2) comprises a transmission body (21), a ventilation valve (211) is provided on the top of the transmission body (21), a transmission rod (212) is fixedly connected to the rotating end of the transmission body (21), and two mounting plates B (22) are fixedly mounted on the bottom of the transmission body (21).

9. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 8, characterized in that: The base mechanism (1) comprises a main beam plate (11), an outer wall of the main beam plate (11) is provided with a group of sliding grooves (111), a mounting adjustment seat (12) is fixedly mounted on the bottom of the main beam plate (11), a mounting plate A (13) is fixedly mounted on the top of the main beam plate (11), a speed detection motor (14) is fixedly mounted on the top of the mounting plate A (13), and a connecting column (141) is fixedly mounted on the rotating end of the speed detection motor (14).

10. The durability test bench for the front-wheel drive transmission of agricultural machinery according to claim 9, characterized in that: The bottom of the main beam plate (11) is fixedly mounted to the top of the fixing frame (41), the outer walls of the two sets of sliding blocks (511) are slidably embedded in the interior of the sliding groove (111), the bottom of the fixing seat (31) is fixedly mounted to the top of the main beam plate (11), and the bottom of the mounting plate B (22) is fixedly mounted to the top of the main beam plate (11) by means of screws.

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