A hydraulic motor tilt and roll test bench with adjustable radial load on output shaft

Abstract

The present application relates to the field of hydraulic motor, especially to a kind of output shaft radial load adjustable hydraulic motor tilt swing test bench, including pedestal, the pedestal is positioned with detection platform, detection platform and pedestal are swinged together by swing connection component, and test assembly for detecting motor performance is arranged on detection platform;The present application is connected by driving the output shaft of the motor to be tested with extension shaft, and counterweight is arranged eccentrically on the extension shaft, when simulating the load environment of motor output shaft, the load exerted by rotating counterweight will always act on the output shaft, and by driving the motor to be tested to tilt swing and vibration test, simulate the complex working conditions that motor may encounter in actual use, so that test result is more application value.

Description

Technical Field

[0001] This invention relates to the field of motors, and in particular to a tilting and swinging test bench for hydraulic motors with adjustable output shaft radial load. Background Technology

[0002] In modern industry, hydraulic motors serve as core actuators in various mechanical equipment, and their performance directly determines the equipment's power output, response speed, and operational stability. During actual use, the output shaft of a hydraulic motor may experience radial force due to external forces (such as coupling misalignment or sudden load changes), leading to fretting wear, eccentric vibration, or even bearing bending or damage. Therefore, radial load tests are necessary to identify material and design defects. Furthermore, marine hydraulic motors are frequently subjected to dynamic loads such as tilting, turbulence, and vibration, which can cause oil leakage or seal failure. Therefore, tilting and swaying tests are required to ensure stable operation of the motor under extreme tilt angles or high-frequency swaying.

[0003] With the development of technology, technicians in related fields have also made numerous optimizations to the technical means used for hydraulic motor performance testing. For example, Chinese Patent Publication No. CN118775375A discloses a test platform and test method for the vibration of the output shaft of a hydraulic motor. Its technical solution includes a test platform, a clamping slide rail, a clamping slider, a motor bracket, a clamping mechanism, and a test mechanism. This device positions and clamps the output shaft of the hydraulic motor through the clamping mechanism, improving the testing efficiency and accuracy. Furthermore, it simulates the operating environment of the hydraulic motor through a load mechanism, further improving the accuracy of the output shaft vibration test.

[0004] However, the aforementioned motor testing platform still has some shortcomings in actual use:

[0005] The aforementioned device, via an electric slider, drives the ramp block and the limiting slide rail to move away from the clamping slide rail under the constraint of the adjusting slide groove. The movement of the limiting slide rail causes the circular counterweight to move downwards under the constraint of the square limiting block and the square limiting block, thus applying the weight of the circular counterweight to the extension shaft, imposing a load on it and causing the extension shaft to tend to bend along the load direction. This simulates the actual working environment of a hydraulic motor. Because it drives the circular counterweight to slide up and down along the limiting slide rail on the ramp block, that is, through the sliding resistance between the inclined limiting slide rail and the circular counterweight, a radial load is applied to the extension shaft, while simultaneously driving the motor output shaft and the extension... During the continuous rotation of the extension shaft, the ramp block and the limiting slide will always be confined to the detection platform. The radial load applied by the extension shaft and the ring counterweight will have a relative rotational effect with the extension shaft. That is, when the extension shaft and the output shaft rotate, the load applied by the ring counterweight will always act only on the rotational tangent on the lower side of the extension shaft. This will cause the load on the same tangent on the extension shaft to change continuously with the rotation angle of the extension shaft when the load of the ring counterweight acts on the rotating extension shaft. This will affect the overall vibration amplitude of the extension shaft. In other words, the vibration amplitude of the extension shaft after being subjected to a load is relatively small, which is difficult to meet the applicability of the detection data.

[0006] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing technical means for detecting motor quality. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a tilting and swinging test bench for a hydraulic motor with adjustable output shaft radial load, comprising a base, an upper limit for a testing platform on the base, and a swinging connection between the testing platform and the base via a swinging connection assembly. A test assembly for testing motor performance is provided on the testing platform, the test assembly including:

[0008] The extension platform is located on one side of the testing platform and extends towards the base.

[0009] The load unit includes at least one counterweight and a connecting block. A connecting guide rod is eccentrically connected between the counterweight and the connecting block. An extension shaft is provided on the side of the connecting block closer to the test platform. A coupling is connected to the extension shaft to connect to the output shaft of the motor under test.

[0010] A vibration sensor, positioned on one side of the coupling, is used to detect the vibration characteristics of the motor output shaft.

[0011] Preferably, the test assembly further includes a swing guide rod mounted on the base and installed on the test platform. A driven guide rod is rotatably connected to the end of the swing guide rod away from the test platform. A drive rod is rotatably connected to the end of the driven guide rod away from the swing guide rod. A drive motor connected to the base is connected to the upper limit of the drive rod.

[0012] Preferably, the connecting guide rod is connected to a driven slider that is limited and inserted into the extension platform.

[0013] Preferably, the swing connection assembly includes several telescopic links jointly arranged between the detection platform and the base, and the telescopic section of the telescopic link is rotatably connected to the base.

[0014] Preferably, the detection platform is further provided with a clamping component for limiting the motor. The clamping component includes a guide groove formed on the detection platform, two sliding clamping plates sliding symmetrically in the guide groove, and adjustable clamping blocks are symmetrically arranged on opposite sides of the two sliding clamping blocks.

[0015] Preferably, two opposite sides of the same sliding clamp are symmetrically provided with telescopic bent clamps, and the two bent clamps on the same sliding clamp extend to both sides of the adjustable clamping block.

[0016] Preferably, a bidirectional lead screw is provided between the detection platform and the two sliding clamps for limiting and controlling the movement. The two ends of the bidirectional lead screw are provided with two threads in opposite directions, and the two sliding clamps are driven to slide and adjust according to the two threads respectively.

[0017] Preferably, the connecting block has an adjustment groove, and an adjustment slider connected to the extension shaft slides and is limited within the adjustment groove. An adjustment screw threaded through the adjustment groove is connected to the adjustment slider.

[0018] Preferably, the extension platform is slidably mounted on the detection platform, and a locking rod for locking the extension platform after sliding adjustment is mounted at the upper limit of the detection platform.

[0019] Preferably, a limiting groove is formed on the extended platform corresponding to the driven slider.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] I. This invention connects the output shaft of the test motor to the extension shaft, and eccentrically sets a counterweight on the extension shaft. When simulating the load environment of the motor output shaft, the load applied by the rotating counterweight will always act on the output shaft. By driving the test motor to tilt, swing and vibrate, the complex dynamic environment that the motor may encounter in actual use is realistically reproduced, making the test results more valuable.

[0022] Second, by adjusting the relative distance between the connecting block and the extension shaft, the eccentricity between the counterweight and the extension shaft can be adjusted accordingly. By adjusting the rotation amplitude of the counterweight under different eccentricities, the radial load applied to the motor output shaft can be precisely controlled to meet different testing requirements. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the base of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the test component of the present invention.

[0027] Figure 4 This is a front view of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the clamping component of the present invention.

[0029] Figure 6 This is a schematic diagram of the load unit of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the adjusting slider of the present invention.

[0031] Figure 8 This is a schematic diagram of the structure of the telescopic block of the present invention.

[0032] Figure 9 This is a schematic diagram of one embodiment of the present invention.

[0033] In the diagram, 1. Base; 10. Testing platform; 11. Swinging connection assembly; 110. Telescopic connecting rod; 2. Testing assembly; 20. Extension platform; 21. Load unit; 210. Counterweight; 211. Connecting block; 212. Connecting guide rod; 22. Extension shaft; 220. Coupling; 23. Vibration sensor; 24. Swinging guide rod; 240. Driven guide rod; 241. Drive rotating rod; 242. Drive motor; 25. Driven slider; 250, limiting groove; 26, clamping element; 260, guide groove; 261, sliding clamping plate; 262, adjustable clamping block; 263, bending clamping plate; 264, double-acting screw; 27, adjusting groove; 270, adjusting slider; 271, adjusting screw; 28, locking rod; 280, through hole; 29, telescopic block; 290, through groove; 291, driven slider; 2910, threaded section; 2911, smooth section. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 To be continued Figure 9 The embodiments of the present invention will be described in detail below.

[0035] This application discloses a tilting and swaying test bench for a hydraulic motor with adjustable radial load on the output shaft. This application is mainly used to simulate the state of a motor under extreme conditions during performance testing, thereby detecting the performance of the motor under extreme conditions. Specifically, during the testing process, the load applied to the motor's output shaft is precisely adjusted by regulating the relative eccentricity between the counterweight and the extension shaft. Furthermore, this application also simulates complex dynamic environments by simultaneously driving the motor to tilt and sway while rotating, thereby improving the accuracy of the test data.

[0036] Example 1: Refer to Figure 1 As shown, a hydraulic motor tilting and swing test bench with adjustable output shaft radial load includes a base 1, a test platform 10 at the upper limit of the base 1, the test platform 10 and the base 1 are oscillatingly connected together by a swing connection assembly 11, and a test assembly 2 for testing motor performance is provided on the test platform 10.

[0037] In use, the motor to be tested is positioned on the testing platform 10, and then connected to the motor output shaft via the testing component 2. Simultaneously, the motor positioned on the testing platform 10 is driven to tilt, sway, or vibrate, simulating the tilting, swaying, and vibration environments that the motor may encounter in actual use. This verifies its structural strength, functional stability, and safety, ensuring that the motor can withstand various complex dynamic environments during transportation and use, and reducing the risk of damage.

[0038] Reference Figures 2 to 4 As shown, this is test component 2 used to test motor performance; specifically, test component 2 includes:

[0039] The extension platform 20 is located on one side of the detection platform 10 and extends towards the base 1.

[0040] The load unit 21 includes at least one counterweight 210 and a connecting block 211. A connecting guide rod 212 is eccentrically connected between the counterweight 210 and the connecting block 211. An extension shaft 22 is provided on the side of the connecting block 211 closer to the test platform 10. A coupling 220 is connected to the extension shaft 22 to correspondingly connect to the output shaft of the motor under test. The coupling is preferably a rigid coupling with high rigidity and low inertia, such as a cross-shaft rigid coupling.

[0041] Vibration sensor 23, which is positioned on one side of coupling 220, is used to detect the vibration characteristics of the motor output shaft. This is a conventional existing technology and will not be described in detail here.

[0042] In use, the extension shaft 22, coupling 220 and the output shaft of the motor under test are first connected to each other so that the vibration sensor 23 at the coupling 220 is in contact with the motor output shaft. Due to the eccentric setting between the counterweight 210 and the connecting guide rod 212 and the connecting block 211, the motor output shaft is subjected to the gravity load of the counterweight 210 on the connecting guide rod 212, the connecting block 211, the extension shaft 22 and the coupling 220 after the motor output shaft is connected to the coupling 220 and the extension shaft 22 in the initial stage. This simulates the radial runout that occurs during the use of the motor output shaft, resulting in the vibration environment of the motor output shaft.

[0043] When vibration testing is required to simulate a load environment, the rotation of the motor output shaft drives the coupling 220, extension shaft 22, connecting block 211, connecting guide rod 212, and counterweight 210 to rotate synchronously. Due to the eccentric setting between the counterweight 210 and the connecting guide rod 212 and the connecting block 211, the motor output shaft, coupling 220, and extension shaft 22 are initially subjected to the eccentric gravity load of the counterweight 210, which is the radial load acting on the output shaft. After driving the coupling 220, extension shaft 22, connecting block 211, connecting guide rod 212, and counterweight 210 to rotate synchronously, the eccentrically connected connecting guide rod 212 and counterweight 210 generate periodic radial forces due to uneven mass distribution during rotation, forming a dynamic centrifugal effect. This ensures that the radial load always acts stably on the output shaft, ensuring that the vibration amplitude of the motor output shaft is relatively stable during rotation. Then, the vibration sensor 23 detects the rotating motor output shaft, thus completing the vibration detection of the motor under load.

[0044] Furthermore, referring to Figure 3 and Figure 4 As shown, in order to simulate the vibration characteristics of the motor output shaft in a tilted and swaying environment, the test assembly 2 also includes a swing guide rod 24 that passes through the base 1 and is set on the test platform 10. An opening is formed on the base 1 corresponding to the swing guide rod 24. A driven guide rod 240 is rotatably connected to the end of the swing guide rod 24 away from the test platform 10. A drive rod 241 is rotatably connected to the end of the driven guide rod 240 away from the swing guide rod 24. A drive motor 242 connected to the base 1 is connected to the upper limit of the drive rod 241. The drive rod 241 rotates about the output shaft of the drive motor 242.

[0045] In use, the rotation of the drive motor 242 drives the drive rod 241 to rotate. The rotation of the drive rod 241 causes one end of the driven guide rod 240 to rotate around the output shaft of the drive motor 242. At the same time, the other end of the driven guide rod 240 is connected to the swing guide rod 24 for limiting. Therefore, the driven guide rod 240 is driven by the circumferentially rotating drive rod 241 to slide back and forth in the horizontal direction. Since one end of the driven guide rod 240 is rotatably connected to the swing guide rod 24, and the swing guide rod 24 is limited and passed through the base 1 and connected to the detection platform 10, the sliding of the driven guide rod 240 has the tendency to cause the swing guide rod 24 and the detection platform 10 to deflect along the rotation axis connected to the driven guide rod 240. This achieves the tilting and swinging of the detection platform 10 and the test motor limited on it, so as to simulate the vibration characteristics of the motor output shaft in the tilting and swinging environment.

[0046] Furthermore, refer to Figure 3 and Figure 4 As shown, in order to limit the detection platform 10 on the base 1 so that it can be driven to tilt and swing, the swing connection assembly 11 includes a plurality of telescopic links 110 commonly arranged between the detection platform 10 and the base 1, and the telescopic sections of the telescopic links 110 are rotatably connected to the base 1. As an optional implementation, in this embodiment, four telescopic links 110 are used and are distributed in a rectangular shape corresponding to the detection platform 10.

[0047] In use, when the driven guide rod 240 is driven to slide towards the drive motor 242, the driven guide rod 240 pulls the swing guide rod 24 to tilt towards the drive motor 242 (that is, tilting upward relative to the counterweight 210). At this time, the two telescopic connecting rods 110 connected to the detection platform 10 and on the side closer to the drive motor 242 extend upward and deflect in response to the deflection of the detection platform 10. The two telescopic connecting rods 110 on the other side of the detection platform 10 away from the drive motor 242 retract downward and deflect simultaneously, so that the detection platform 10 is tilted.

[0048] When the driven guide rod 240 is driven to slide away from the drive motor 242, the driven guide rod 240 pushes the swing guide rod 24 to tilt away from the drive motor 242 (that is, tilt downward relative to the counterweight 210). At this time, the telescopic connecting rods 110 on both sides of the detection platform 10 will retract and deflect on the side closer to the drive motor 242, and extend and deflect on the side away from the drive motor 242, causing the detection platform 10 to tilt to the other side. Through the reciprocating rotation of the output shaft of the drive motor 242, the detection platform 10 and the motor limited on it are also driven to tilt in a corresponding reciprocating manner, thus presenting a continuous swinging state.

[0049] Reference Figure 3and Figure 4 As shown, in order to limit the connection block 211, the connection guide rod 212 and the counterweight block 210 in the initial state so that the output shaft of the tested motor can be connected to the extension shaft 22 and the coupling 220 respectively, the driven slider 25 with limit insertion on the extension platform 20 is connected to the connection guide rod 212.

[0050] Reference Figure 4 and Figure 5 As shown, the testing platform 10 is also equipped with a clamping component 26 for limiting the movement of the motor. The clamping component 26 includes a guide groove 260 formed on the testing platform 10. Two sliding clamping plates 261 slide symmetrically within the guide groove 260, and adjustable clamping blocks 262 are symmetrically arranged on opposite sides of the two sliding clamping plates. In use, the motor to be tested is placed between the two sliding clamping plates 261, and then the two sliding clamping plates 261 are driven to slide relative to each other along the guide groove 260 to drive the connected adjustable clamping blocks 262 to abut against the motor, forming an initial limiting clamping effect on the motor.

[0051] Reference Figure 4 and Figure 5 As shown, since the motor and the testing platform 10 need to undergo vibration testing under an inclined and swaying environment, to prevent the motor from loosening during the swaying process, two symmetrically arranged telescopic bent clamps 263 are provided on opposite sides of the same sliding clamp 261. The bent clamps 263 are self-locking telescopic structures, and the two bent clamps 263 on the same sliding clamp 261 extend to both sides of the adjustable clamping block 262. In use, the motor is limited on the testing platform 10 by the two sliding clamps 261 and the adjustable clamping block 262. While the two sliding clamps 261 slide relative to each other, they also drive the connected bent clamps 263 to slide synchronously, so that the two bent clamps 263 are respectively distributed at both ends of the motor. Through the joint support of multiple bent clamps 263 and the adjustable clamping block 262, the motor is clamped and limited on the testing platform 10 to prevent the motor from loosening during the testing process.

[0052] Reference Figure 4 and Figure 5As shown, in order to drive the two sliding clamps 261 to slide relative to each other and form a limiting clamping effect on the motor, a bidirectional lead screw 264 is provided between the testing platform 10 and the two sliding clamps 261 for limiting. The two ends of the bidirectional lead screw 264 have two threads in opposite directions. The two sliding clamps 261 are driven to slide and adjust according to the two threads respectively. In use, after the motor to be tested is placed on the testing platform 10, the bidirectional lead screw 264 is driven to rotate in the forward direction. The two sliding clamps 261 slide towards each other through the connecting threads, thereby achieving the effect of driving the connected adjustable clamping block 262 and bending clamp 263 to limit and hold the motor. When it is necessary to release the motor limit after the test is completed, simply drive the bidirectional lead screw 264 to rotate in the opposite direction to drive the two sliding clamps 261 to slide away from each other, so that the adjustable clamping block 262 and bending clamp 263 disengage from the motor.

[0053] Reference Figure 6 and Figure 7 As shown, to improve the accuracy of the results data when performing environmental simulation testing on the motor, an adjustment groove 27 is formed on the connecting block 211. An adjustment slider 270 connected to the extension shaft 22 slides and is limited within the adjustment groove 27. An adjustment screw 271, threaded through the adjustment groove 27, is connected to the adjustment slider 270. In use, since the adjustment slider 270 and the extension shaft 22 are connected to the output shaft of the motor under test, the adjustment screw 271 is driven to rotate. The adjustment screw 271, through its thread, drives the adjustment slider 270 to slide along the adjustment groove 27, that is, it drives the adjustment slider 270 and the extension shaft 22 to slide relative to the connecting block 211, thereby achieving an eccentric setting between the extension shaft 22 and the connecting block 211. This drives the motor under test to rotate, and the motor's output shaft drives the coupling 220, the extension shaft 22, the adjustment slider 270, the connecting block 211, the adjustment screw 271, the connecting guide rod 212, and the counterweight 210 to rotate synchronously.

[0054] The eccentricity between the extension shaft 22 and the connecting block 211 is adjusted by rotating the adjusting screw 271, thereby adjusting the torque of the connecting block 211 when it rotates relative to the extension shaft 22 and the motor output shaft. This allows for adjustment of the radial load applied by the offset connecting block 211, connecting guide rod 212, and counterweight 210 when the motor output shaft rotates at the same speed. The eccentricity and the load are directly correlated. That is, when the eccentricity between the connecting block 211 and the extension shaft 22 is large, the load applied by the counterweight 210 as a whole also increases, which in turn increases the amplitude of vibration of the output shaft, coupling 220, and extension shaft 22. The opposite is true when the eccentricity is small.

[0055] Furthermore, referring to Figure 4As shown, considering that the rotation radius of the connecting block 211, connecting guide rod 212 and counterweight 210 will change accordingly after the eccentric adjustment, the extension platform 20 is slidably mounted on the detection platform 10 to avoid the extension platform 20 from hindering the rotation of the counterweight 210. A locking rod 28 is mounted on the upper limit of the detection platform 10 to lock the extension platform 20 after the sliding adjustment. Multiple through holes 280 are formed on the extension platform 20 corresponding to the locking rod 28 for the locking rod 28 to be inserted.

[0056] At the same time, refer to Figure 4 As shown, a limiting groove 250 is formed on the extension platform 20 corresponding to the driven slider 25. While limiting and supporting the driven slider 25, the driven slider 25 is allowed to disengage from the extension platform 20 along the limiting groove 250. The limiting groove 250 is preferably a dovetail groove structure. At the same time, the driven slider 25 is also set as a trapezoidal slider to fit the limiting groove 250.

[0057] In use, in the initial state, the extension platform 20 is slid away from the detection platform 10, so that the driven slider 25 slides into the limiting groove 250, and then the locking rod 28 is driven to be inserted into the corresponding through hole 280 to limit the sliding of the extension platform 20. The extended platform 20 forms the initial support and limit for the counterweight 210, the connecting guide rod 212, the connecting block 211 and the extension shaft 22, so as to facilitate the connection of the output shaft of the tested motor.

[0058] Example 2: Refer to Figures 6 to 9 As shown, based on Embodiment 1, to further simulate the vibration characteristics of the motor output shaft under extreme conditions, the adjusting slider 270 and the extension shaft 22 are connected by a telescopic block 29. The telescopic section and the fixed section of the telescopic block 29 are connected to the adjusting slider 270 and the extension shaft 22, respectively. A through groove 290 is provided on the adjusting slider 270 corresponding to the telescopic block 29. A driven slide rod 291 extends downward from the adjusting screw 271 and passes through the telescopic block 29. The driven slide rod 291 is provided with a threaded section 2910 and a smooth section 2911. The threaded section 2910 of the driven slide rod 291 is threadedly connected to the fixed section of the telescopic block 29. It should be noted that in the initial state, the driven slide rod 291 simultaneously restricts the telescopic section and the fixed section of the telescopic block 29 to limit the telescopic adjustment of the telescopic block 29. At this time, the telescopic section and the fixed section of the telescopic block 29 are relatively contracted, causing the extension shaft 22 to abut against the adjusting slider 270.

[0059] In use, by driving the adjusting screw 271 to rotate, the adjusting slider 270 is moved to either end of the adjusting groove 27. Then, the adjusting screw 271 is continued to rotate. Due to the limiting effect of the adjusting groove 27 on the adjusting slider 270, the adjusting screw 271 drives the driven slider 291 to rotate synchronously and slide away from the adjusting slider 270 via the thread. This releases the driven slider 291 from the restriction of the telescopic block 29. After the driven slider 25 disengages from the telescopic and fixed sections of the telescopic block 29, the telescopic section of the telescopic block 29 is then driven... Adjusting slider 270, adjusting screw 271, driven slide rod 291, connecting block 211, connecting guide rod 212 and counterweight 210 slide away from extension shaft 22, that is, drive the telescopic section and fixed section of telescopic block 29 to extend relative to each other, so that the distance between extension shaft 22 and adjusting slider 270 is increased. Then, driving adjusting screw 271 and driven slide rod 291 to rotate in the opposite direction and move down, so that the smooth section 2911 of driven slide rod 291 is re-inserted into the extended telescopic block 29, that is, driven slide rod 291 passes through the telescopic section of telescopic block 29.

[0060] Based on the above, the motor output shaft is then driven to rotate. The rotation of the motor output shaft synchronously drives the coupling 220, extension shaft 22, extended telescopic block 29, adjusting slider 270, adjusting screw 271, driven slide rod 291, connecting block 211, connecting guide rod 212, and counterweight 210 to rotate synchronously. Due to the extension of the telescopic block 29, the extension shaft 22 is spaced apart from the adjusting slider 270 and the connecting block 211. Simultaneously, the adjusting slider 270 has a through groove 290, and the telescopic section of the telescopic block 29 is fitted onto the driven slide rod 291. At this point, after the extension shaft 22 and the connecting block 211 are driven to rotate as a whole, the connecting guide rod 212, counterweight 210, and connecting screw 211 rotate synchronously. The eccentricity of block 211 relative to the extension shaft 22 causes a centrifugal force to be applied by the eccentric load of the counterweight block 210 when the connecting block 211 and the telescopic block 29 rotate. When the centrifugal force direction corresponds to the position of the slot 290 on the adjusting slider 270, the telescopic block 29 is driven to swing along the slot 290 with the driven slide rod 291 as the axis. Thus, during the rotation, the driven slide rod 291, adjusting screw 271, adjusting slider 270, connecting block 211, connecting guide rod 212 and counterweight block 210 connected to the telescopic section of the telescopic block 29 also swing and sway to a certain extent during the rotation with the extension shaft 22 and the output shaft as the axis.

[0061] Example 3: Refer to Figures 7 to 9As shown, based on Embodiment 1 and Embodiment 2, in order to further simulate the vibration characteristics of the motor when used in extreme environments, based on the above, the drive motor 242 is activated to drive the detection platform 10, the motor, the extension shaft 22, the connecting block 211 and the counterweight 210 to tilt and swing. At the same time, the motor drives the extension shaft 22, the eccentrically adjusted connecting block 211 and the counterweight 210 to rotate, so that while the motor tilts and swings, the load connected to its output shaft also tilts, swings and rotates synchronously, in order to further simulate and test the performance of the motor when used in extreme environments.

[0062] During operation: First, the motor to be tested is positioned on the testing platform 10, and the motor output shaft is connected to the test component 2. The test component 2 drives the motor to tilt and swing, simulating the vibration characteristics of the motor when it is used in a tilted and swinging environment. Then, the test component 2 is used for testing.

[0063] Step 2: After completing the corresponding connection between the output shaft of the test motor and the test component 2, start the motor to drive the test component 2 to rotate synchronously through the motor output shaft. During the rotation of the test component 2 with the motor output shaft, a radial load is synchronously applied to the motor output shaft to simulate the vibration characteristics of the motor under load.

[0064] Step 3: Apply an eccentric load to the motor output shaft using test component 2, and simultaneously drive the motor to tilt and oscillate, in order to simulate the vibration characteristics of the motor output shaft under complex and extreme conditions.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic motor tilting and swing test bench with adjustable output shaft radial load, comprising a base (1), characterized in that: The base (1) has a detection platform (10) at its upper limit. The detection platform (10) and the base (1) are oscillatingly connected together by a swing connection assembly (11). A test assembly (2) for testing motor performance is provided on the detection platform (10). The test assembly (2) includes: The extension platform (20) is located on one side of the detection platform (10) and extends toward the base (1); The load unit (21) includes at least one counterweight (210) and a connecting block (211). A connecting guide rod (212) is eccentrically connected between the counterweight (210) and the connecting block (211). An extension shaft (22) is provided on the side of the connecting block (211) closer to the test platform (10). A coupling (220) is connected to the extension shaft (22) to connect the output shaft of the motor under test. A vibration sensor (23) is positioned on one side of the coupling (220) to detect the vibration characteristics of the motor output shaft; The test component (2) further includes a swing guide rod (24) installed on the base (1) of the test platform (10). The end of the swing guide rod (24) away from the test platform (10) is rotatably connected to a driven guide rod (240). The end of the driven guide rod (240) away from the swing guide rod (24) is rotatably connected to a drive rod (241). The upper limit of the drive rod (241) is connected to a drive motor (242) connected to the base (1). The detection platform (10) is also provided with a clamping member (26) for limiting the motor. The clamping member (26) includes a guide groove (260) formed on the detection platform (10). Two sliding clamping plates (261) slide symmetrically in the guide groove (260). Adjustable clamping blocks (262) are symmetrically arranged on opposite sides of the two sliding clamping plates (261). The connecting block (211) has an adjustment groove (27) formed on it. An adjustment slider (270) connected to the extension shaft (22) slides and is limited in the adjustment groove (27). An adjustment screw (271) threaded through the adjustment groove (27) is connected to the adjustment slider (270).

2. The hydraulic motor tilting and swing test bench with adjustable output shaft radial load according to claim 1, characterized in that: The connecting guide rod (212) is connected to a driven slider (25) that is limited and inserted on the extension platform (20).

3. The hydraulic motor tilting and swing test bench with adjustable output shaft radial load according to claim 1, characterized in that: The swing connection assembly (11) includes several telescopic links (110) that are jointly arranged between the detection platform (10) and the base (1), and the telescopic section of the telescopic link (110) is rotatably connected to the base (1).

4. The hydraulic motor tilting and swing test bench with adjustable output shaft radial load according to claim 1, characterized in that: Two symmetrically arranged telescopic bent clamps (263) are provided on the opposite sides of the same sliding clamp (261), and the two bent clamps (263) on the same sliding clamp (261) extend to both sides of the adjustable clamping block (262).

5. The hydraulic motor tilting and swing test bench with adjustable output shaft radial load according to claim 1, characterized in that: The detection platform (10) and the two sliding clamps (261) are connected by a bidirectional lead screw (264). The two ends of the bidirectional lead screw (264) are symmetrically threaded with opposite directions. By rotating the bidirectional lead screw (264), the two sliding clamps (261) are synchronously slid and adjusted along the corresponding thread direction, thereby realizing the clamping or releasing operation of the motor.

6. The hydraulic motor tilting and swing test bench with adjustable output shaft radial load according to claim 1, characterized in that: The extension platform (20) is slidably mounted on the detection platform (10), and a locking rod (28) is mounted on the upper limit of the detection platform (10) to lock the extension platform (20) after the sliding adjustment.

7. A hydraulic motor tilting and swing test bench with adjustable output shaft radial load according to claim 2, characterized in that: A limiting groove (250) is formed on the extended platform (20) corresponding to the driven slider (25).

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