Main shaft sample piece simulation bench test device

Abstract

The invention relates to the field of material testing devices, and particularly discloses a spindle sample piece simulation bench testing device which comprises a base, a liquid environment tank, a torsion driving mechanism and a linear micro-motion driving mechanism, the liquid environment tank is used for containing a liquid medium, and a spindle sample piece is immersed in the liquid medium; the torsion driving mechanism is used for driving the two ends of the main shaft sample piece to generate relative torsion, and the linear micro-motion driving mechanism is used for driving the liquid environment tank to slide back and forth in the horizontal direction, so that the liquid medium contained in the liquid environment tank is shaken, and relative motion is generated between the liquid medium and the main shaft sample piece. Simulation of various environmental factors (including torsion, corrosion and micro motion) in the service process of the main shaft is integrated, the various environmental factors can be independently applied to the main shaft sample piece, and the various environmental factors can also be applied to the main shaft sample piece at the same time, so that behaviors of a main shaft sample piece material under the coupling action of a single environmental factor or various environmental factors are researched.

Description

Technical Field

[0001] This application relates to the field of material testing devices, and in particular to a spindle sample simulation bench testing device. Background Technology

[0002] In marine engineering, shipbuilding, chemical engineering, and other fields, propeller shafts, agitator shafts, and other spindle-type components operate in complex, multi-factor coupled environments during service. These components not only withstand enormous torques from the main engine or power source, generating torsional stress around their axis, but are also exposed to liquid media such as seawater or chemical raw materials. Furthermore, due to fluid disturbances, there is often relative motion between the components and the liquid medium. This interaction of torsion, corrosion, and fretting accelerates material fatigue damage, easily leading to shortened spindle life or failure.

[0003] To evaluate and screen suitable spindle materials and protective processes for such operating conditions, it is necessary to develop a testing apparatus capable of simulating these combined conditions. This apparatus would allow for precise and independent control of the torsional angle (or torque), fretting frequency and amplitude, and the physicochemical parameters of the liquid environment (such as temperature, pressure, and media composition) within a compact system. This would be used to study the behavior of spindle materials under the coupled effects of multiple environmental factors. However, existing material testing apparatuses are typically single-function and cannot effectively simulate the behavior of spindles under various environmental conditions, including torsion, corrosion, and fretting. Summary of the Invention

[0004] To simulate the behavior of a spindle under the coupled effects of multiple environmental factors such as torsion, corrosion, and fretting, this application provides a spindle sample simulation bench test device.

[0005] The spindle sample simulation bench test device provided in this application adopts the following technical solution: A spindle sample simulation bench test apparatus includes: Base; A liquid environment tank is used to hold a liquid medium, in which the spindle sample is immersed; the liquid environment tank is slidably mounted on the base in a horizontal direction. Torsion drive mechanism, used to drive the two ends of the spindle sample to twist relative to each other; A linear micro-motion drive mechanism is used to drive the liquid environment tank to slide back and forth in the horizontal direction, causing the liquid medium contained therein to sway, thereby generating relative motion between the liquid medium and the main shaft sample.

[0006] This application integrates simulations of various environmental factors (including torsion, corrosion, and fretting) during the service life of a spindle: The spindle sample is immersed in a liquid medium, the composition and temperature of which can be adjusted according to actual needs, thus simulating the corrosion behavior of the spindle in a liquid environment; a torsion drive mechanism drives the two ends of the spindle sample to rotate relative to each other, simulating the torsional condition of the spindle; a linear fretting drive mechanism drives the liquid environment tank to slide back and forth, causing the liquid medium inside to slosh, thus simulating the relative motion between the liquid medium and the spindle sample. Various environmental factors can be applied to the spindle sample individually or simultaneously to study the behavior of the spindle material under the combined effects of a single or multiple environmental factors. This is particularly suitable for simulating complex operating conditions of spindle-type workpieces such as propeller spindles and agitator spindles.

[0007] Furthermore, a slide rail is fixedly provided on the base, a sliding seat is slidably provided on the slide rail, and the liquid environment tank is fixedly provided on the sliding seat.

[0008] The sliding seat and the slide rail slide together, allowing the liquid environment tank to move unidirectionally or reciprocate on the base.

[0009] Furthermore, the two ends of the liquid environment tank are respectively rotatably connected to a torsion drive shaft, the two torsion drive shafts are coaxial, one end of each torsion drive shaft is located inside the liquid environment tank and a clamping member is fixed to that end, and the two clamping members are respectively clamped to the two ends of the main shaft sample; the torsion drive mechanism is used to drive the torsion drive shaft to rotate.

[0010] Furthermore, the torsion drive mechanism is used to drive one of the torsion drive shafts to rotate, or to drive two torsion drive shafts to rotate in opposite directions.

[0011] Furthermore, the torsion drive mechanism includes a torsion telescopic member and a torsion drive assembly. One end of the torsion telescopic member is connected to the end of the torsion drive shaft located outside the liquid environment tank, and the other end of the torsion telescopic member is connected to the torsion drive assembly. The torsion drive assembly is fixedly mounted on the base. The torsion drive assembly is used to drive the torsion telescopic member to rotate around its own axis, thereby driving the torsion drive shaft to rotate.

[0012] The torsion drive assembly drives the torsion telescopic component to rotate, thereby driving the torsion drive shaft to rotate. Then, the torque is transmitted to the spindle sample through the clamping component, causing the spindle sample to twist. When one torsion drive shaft rotates and the other torsion drive shaft is stationary, the working condition of one end of the spindle sample twisting can be simulated. When the two torsion drive shafts rotate in opposite directions, the working condition of both ends of the spindle sample twisting simultaneously can be simulated.

[0013] Furthermore, the torsional expansion member can adaptively expand and contract as the liquid environment tank reciprocates.

[0014] The torsional expansion joint has both rotational and extensional degrees of freedom, and the two do not interfere with each other. When the liquid environment tank slides back and forth, the torsional expansion joint can adapt to the expansion and contraction, so that the device can simultaneously apply both torsional and micro-motion environmental factors to the main shaft sample.

[0015] Furthermore, the torsion telescopic component includes a telescopic rod, a first universal joint, and a second universal joint. The two ends of the first universal joint are respectively connected to one end of the telescopic rod and the torsion drive shaft, and the two ends of the second universal joint are respectively connected to the other end of the telescopic rod and the torsion drive assembly.

[0016] The second universal joint is driven to rotate by the torsion drive assembly, and the torsion drive shaft is driven to rotate under the transmission of the telescopic rod and the first universal joint, so as to achieve the torsion drive of the main shaft sample. When the liquid environment tank slides back and forth, the telescopic rod undergoes adaptive extension and retraction, and the first universal joint and the second universal joint undergo adaptive attitude changes, so that the rotation and extension and retraction of the torsion telescopic component do not interfere with each other.

[0017] Furthermore, a braking mechanism is provided on the sliding seat for braking the torsion drive shaft.

[0018] Since torsion drive components typically include a motor, gearbox, and other devices, directly connecting the gearbox output to the torsion drive shaft via a torsion telescopic component may make it difficult to apply a large torque stably. By setting a braking mechanism, the torsion drive shaft can be locked after it has rotated to the correct position, keeping the rotation angle of the torsion drive shaft fixed and not easily changed by the disturbance of the reciprocating motion of the liquid environment tank. This allows for the application of a stable torque to the main shaft component and also helps to reduce the damage that large torque may cause to the gearbox and other devices.

[0019] Furthermore, a mounting platform is fixedly provided on one side of the base, and a fixed seat is fixedly provided on the mounting platform. The linear micro-motion drive mechanism includes a horizontal guide rail fixedly provided on the fixed seat and a first slider slidably provided on the horizontal guide rail. The horizontal guide rail is parallel to the guide rail, and the first slider is connected to the sliding seat. The linear micro-motion drive mechanism also includes an eccentric drive component for driving the first slider to reciprocate along the horizontal guide rail.

[0020] The eccentric drive assembly drives the first slider to slide back and forth along the horizontal guide rail, thereby driving the sliding seat to slide back and forth along the guide rail.

[0021] Furthermore, the eccentric drive assembly includes an eccentric block, a first bevel gear set, and a spline shaft; the spline shaft is rotatably mounted on the fixed base; the first bevel gear set includes a first bevel gear, a second bevel gear, and a right-angle connector; the first bevel gear and the second bevel gear are respectively rotatably connected to both sides of the right-angle connector, and the first bevel gear meshes with the second bevel gear; the first bevel gear is slidably sleeved on the spline shaft and rotates synchronously with the spline shaft; the right-angle connector is rotatably connected to the spline shaft; the second bevel gear is coaxially fixed to the eccentric block; the fixed base is also provided with a transmission assembly for driving the spline shaft to rotate.

[0022] The spline shaft is driven to rotate by the transmission assembly. The first bevel gear rotates synchronously with the spline shaft. Under the transmission of the second bevel gear, the eccentric block rotates, causing the first slider to slide back and forth along the horizontal guide rail. During this process, the first bevel gear set, composed of the first bevel gear, the second bevel gear and the right-angle connector, slides back and forth with the first slider. The right-angle connector slides back and forth along the spline shaft and keeps the first bevel gear and the second bevel gear meshing with each other.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. By immersing the spindle sample in a liquid medium, the corrosion behavior of the spindle in a liquid environment can be simulated. The composition, temperature and other parameters of the liquid medium can be adjusted according to actual needs. 2. By driving the liquid environment tank to slide back and forth, the liquid medium contained in it is made to sway, thereby simulating the working condition of relative motion between the liquid medium and the main shaft sample. The micro-motion frequency and amplitude can be adjusted according to actual needs. 3. By rotating one torsion drive shaft or two torsion drive shafts in opposite directions, it is possible to simulate the working conditions of one end of the spindle being twisted or both ends being twisted simultaneously. The torsion angle (or torque) can be adjusted according to actual needs. Furthermore, by setting a torsion telescopic component, the application of torsion and micro-motion environmental factors do not interfere with each other. 4. In this application, various environmental factors can be applied to the spindle sample individually or multiple environmental factors can be applied to the spindle sample simultaneously, and the parameters of each environmental factor can be adjusted independently to study the behavior of the spindle material under the combined effect of a single environmental factor or multiple environmental factors. It is particularly suitable for simulating the composite working conditions of spindle-type workpieces such as propeller spindles and agitator spindles. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the liquid environment tank in this embodiment; Figure 3 This embodiment is mainly used to illustrate the structural schematic diagram of the torsion drive mechanism; Figure 4 This is a schematic diagram of the linear micro-motion drive mechanism in this embodiment; Figure 5 This is a schematic diagram of the linear micro-motion drive mechanism from another angle in this embodiment; Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle.

[0025] Reference numerals: 1. Base; 11. Slide rail; 12. Sliding seat; 13. Drive shaft mounting seat; 14. Mounting platform; 2. Liquid environment tank; 21. Tank body; 22. Sealing cover; 3. Torsional drive mechanism; 31. Torsional drive shaft; 32. Clamping component; 33. Torsional telescopic component; 331. Telescopic rod; 332. First universal joint; 333. Second universal joint; 34. Torsional drive assembly; 341. First motor; 342. First synchronous belt group; 343. Reducer; 4. Linear micro-motion drive mechanism; 41. Fixed 411. Horizontal guide rail; 412. First slider; 42. Eccentric drive assembly; 421. Splined shaft; 422. First bevel gear; 423. Second bevel gear; 424. Right-angle connector; 425. Eccentric block; 43. Second synchronous belt group; 44. Second bevel gear group; 45. Mounting fine-tuning assembly; 451. Vertical guide rail; 452. Second slider; 453. Connecting block; 454. Connecting frame; 46. Second motor; 5. Braking mechanism; 51. Brake base; 52. Disc brake disc; 53. Brake caliper. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] This application discloses a spindle sample simulation bench test apparatus. (Refer to...) Figure 1 The spindle sample simulation bench test device includes a base 1, a liquid environment tank 2, a torsion drive mechanism 3, and a linear micro-motion drive mechanism 4.

[0028] Reference Figure 1The liquid environment tank 2 includes a tank body 21 and a sealing cover 22. The tank body 21 is used to hold liquid media (such as artificial seawater, acid, alkali, etc.), and its axis is horizontally positioned. The main shaft sample (such as a propeller main shaft, agitator main shaft, or other cylindrical workpiece) is immersed in the liquid media. The liquid media usually does not need to completely fill the tank body 21, so that the liquid media inside can easily slosh when the liquid environment tank 2 reciprocates. The composition, temperature, and other parameters of the liquid media can be adjusted according to actual needs to simulate the liquid environment in which the main shaft is actually in service. The torsion drive mechanism 3 is set at both ends of the liquid environment tank 2 to drive the two ends of the main shaft sample to rotate relative to each other to simulate the torque conditions that the main shaft bears during service. The linear micro-motion drive mechanism 4 is set on one side of the base 1 to drive the liquid environment tank 2 to slide back and forth in the horizontal direction, causing the liquid media contained inside to slosh, thereby simulating the relative motion between the liquid media and the main shaft.

[0029] This application integrates simulations of various environmental factors (including torsion, corrosion, and fretting) during the spindle's service life. These environmental factors can be applied individually to the spindle sample or multiple environmental factors can be applied simultaneously to study the behavior of the spindle material under the combined effects of a single environmental factor or multiple environmental factors.

[0030] Reference Figure 1 A slide rail 11 is fixedly mounted on the base 1, and the slide rail 11 is parallel to the axis of the liquid environment tank 2. A sliding seat 12 is slidably mounted on the slide rail 11, and the liquid environment tank 2 is fixedly mounted on the sliding seat 12. The sliding seat 12 and the slide rail 11 are slidably engaged, so that the liquid environment tank 2 can reciprocate on the base 1.

[0031] To achieve the torsion of the spindle prototype, refer to Figure 1 and Figure 2 A drive shaft mounting base 13 is fixedly mounted on the sliding seat 12. Torsional drive shafts 31 are rotatably connected to both ends of the tank body 21 along its axial direction, and are rotatably mounted on the drive shaft mounting base 13. One end of each torsional drive shaft 31 is located inside the liquid environment tank 2, and a clamping member 32 is fixedly connected to that end. Two clamping members 32 clamp the two ends of the main shaft sample, respectively. In this embodiment, the clamping member 32 is a three-jaw chuck, which clamps the end of the main shaft sample through three jaws. As an optional implementation, a high-torque planetary gear transmission assembly can also be provided between the torsional drive shaft 31 and the clamping member 32 to transmit high torque from the torsional drive shaft 31 to the clamping member 32.

[0032] In another embodiment, the liquid environment tank 2 is detachably mounted on the sliding seat 12; the liquid environment tank 2 is detachably connected to the torsion drive shaft 31. When it is not necessary to study the corrosion behavior of the spindle sample in the liquid medium, the liquid environment tank 2 can be disassembled, and the spindle sample can be exposed to the air to study the effects of torsion and fretting environmental factors on the spindle sample.

[0033] The torsion drive mechanism 3 is used to drive one of the torsion drive shafts 31 to rotate, or to drive the two torsion drive shafts 31 to rotate in opposite directions. When one torsion drive shaft 31 rotates and the other torsion drive shaft 31 is stationary, it can simulate the working condition of one end of the spindle sample being twisted; when the two torsion drive shafts 31 rotate in opposite directions, it can simulate the working condition of both ends of the spindle sample being twisted simultaneously.

[0034] Reference Figure 1 and Figure 3 The torsion drive mechanism 3 includes a torsion telescopic member 33 and a torsion drive assembly 34. One end of the torsion telescopic member 33 is connected to the end of the torsion drive shaft 31 located outside the liquid environment tank 2, and the other end of the torsion telescopic member 33 is connected to the torsion drive assembly 34. The torsion drive assembly 34 is fixedly mounted on the base 1. The torsion drive assembly 34 is used to drive the torsion telescopic member 33 to rotate around its own axis, thereby driving the torsion drive shaft 31 to rotate.

[0035] Specifically, refer to Figure 3 The torsion telescopic component 33 includes a telescopic rod 331, a first universal joint 332, and a second universal joint 333. The two ends of the first universal joint 332 are respectively connected to one end of the telescopic rod 331 and the torsion drive shaft 31. The two ends of the second universal joint 333 are respectively connected to the other end of the telescopic rod 331 and the torsion drive assembly 34. The torsion drive assembly 34 includes a first motor 341, a first synchronous belt group 342, and a reducer 343. The output end of the first motor 341 is connected to the input end of the reducer 343 through the first synchronous belt group 342, and the output end of the reducer 343 is connected to the second universal joint 333.

[0036] The telescopic rod 331 includes a slidingly sleeved outer tube and an inner rod. The outer tube wall has a limiting groove parallel to its own length direction, and the inner rod has a limiting protrusion that slides with the limiting groove, so that the outer tube and the inner rod can rotate synchronously.

[0037] The power output from the first motor 341 is transmitted through the first synchronous belt group 342 and the reducer 343, which drives the second universal joint 333 to rotate. Under the transmission of the telescopic rod 331 and the first universal joint 332, the torsion drive shaft 31 is driven to rotate, thereby realizing the torsion drive of the main shaft sample.

[0038] When the liquid environment tank 2 slides back and forth, the telescopic rod 331 adapts to the extension and retraction, and at the same time, the first universal joint 332 and the second universal joint 333 adapt to the posture change, so that the rotation and extension of the torsional telescopic component 33 do not interfere with each other. In this way, the device can simultaneously apply two environmental factors, torsion and micro-motion, to the main shaft sample.

[0039] In order to apply a stable torque to the spindle prototype, refer to Figure 1 and Figure 3 A braking mechanism 5 is provided on the sliding seat 12 for braking the torsion drive shaft 31. Specifically, the braking mechanism 5 includes a brake base 51, a disc brake disc 52, and a brake caliper 53. The brake base 51 is fixedly mounted on the sliding seat 12, the torsion drive shaft 31 passes through the brake base 51 and is rotatably connected to the brake base 51, and the disc brake disc 52 is coaxially fixed to the torsion drive shaft 31. When the torsion drive shaft 31 rotates to its position, the brake caliper 53 locks the disc brake disc 52 to keep the rotation angle of the torsion drive shaft 31 fixed, thereby applying a stable torque to the main shaft sample.

[0040] To achieve the reciprocating sliding of the liquid environment tank 2 in the horizontal direction, refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 A mounting platform 14 is fixedly installed on one side of the base 1, and a fixed seat 41 is fixedly installed on the mounting platform 14. The linear micro-motion drive mechanism 4 includes a horizontal guide rail 411 fixedly installed on the fixed seat 41 and a first slider 412 slidably installed on the horizontal guide rail 411. The horizontal guide rail 411 is parallel to the slide rail 11, and the first slider 412 is connected to the sliding seat 12. The linear micro-motion drive mechanism 4 also includes an eccentric drive component 42, which is used to drive the first slider 412 to slide back and forth along the horizontal guide rail 411, thereby driving the sliding seat 12 to slide back and forth along the slide rail 11.

[0041] Reference Figure 6 The connection between the first slider 412 and the sliding seat 12 is as follows: the first slider 412 is fixedly connected to a connecting frame 454, and second sliders 452 are fixedly connected to both sides of the connecting frame 454 respectively. Two connecting blocks 453 are fixedly connected to the sliding seat 12, and a vertical guide rail 451 is fixedly connected to each connecting block 453. The two second sliders 452 are slidably mounted on the corresponding vertical guide rails 451. The function of the mounting fine-tuning assembly 45, composed of the vertical guide rail 451, the second sliders 452, the connecting blocks 453, and the connecting frame 454, is that the second sliders 452 slide in cooperation with the vertical guide rails 451, so that even if there is a height deviation between the base 1 and the mounting platform 14, the linear micro-motion drive mechanism 4 can still be connected to the sliding seat 12.

[0042] Furthermore, refer to Figure 4 , Figure 5 and Figure 6 The eccentric drive assembly 42 includes an eccentric block 425, a first bevel gear set, and a spline shaft 421. The spline shaft 421 is rotatably mounted on a fixed base 41. The first bevel gear set includes a first bevel gear 422, a second bevel gear 423, and a right-angle connector 424. The first bevel gear 422 and the second bevel gear 423 are rotatably connected to both sides of the right-angle connector 424 via bearings, and the first bevel gear 422 meshes with the second bevel gear 423. The first bevel gear 422 is slidably sleeved on the spline shaft 421 and rotates synchronously with the spline shaft 421. The right-angle connector 424 is rotatably connected to the spline shaft 421 via bearings. The second bevel gear 423 is coaxially fixed to the eccentric block 425. The fixed base 41 is also provided with a transmission assembly for driving the spline shaft 421 to rotate.

[0043] Specifically, Figure 5 and Figure 6 The transmission assembly includes a second motor 46, a second synchronous belt assembly 43, and a second bevel gear assembly 44. The second bevel gear assembly 44 includes a driving bevel gear and a driven bevel gear that mesh with each other. The output end of the second motor 46 is connected to the driving bevel gear in the second bevel gear assembly 44 via a synchronous belt assembly (located below the mounting platform 14, not shown in the figure). The driven bevel gear in the second bevel gear assembly 44 is connected to the first splined shaft 421 via the second synchronous belt assembly 43.

[0044] The power output from the second motor 46 is transmitted through the second bevel gear set 44 and the second synchronous belt set 43, which drives the spline shaft 421 to rotate. The first bevel gear 422 rotates synchronously with the spline shaft 421. Under the transmission of the second bevel gear 423, the centrifugal force generated by the rotation of the eccentric block 425 drives the first slider 412 to slide back and forth along the horizontal guide rail 411. During this process, the first bevel gear set, composed of the first bevel gear 422, the second bevel gear 423 and the right-angle connector 424, slides back and forth synchronously with the first slider 412. The right-angle connector 424 slides back and forth along the spline shaft 421 and keeps the first bevel gear 422 and the second bevel gear 423 meshing with each other.

[0045] To simulate the oscillation of a liquid medium at different amplitudes and frequencies, refer to Figure 6 Two eccentric blocks 425 are provided, and the included angle between the two eccentric blocks 425 can be adjusted within the range of 0°-180°, thereby adjusting the amplitude of the reciprocating sliding of the first slider 412. The vibration frequency of the first slider 412 can be adjusted by adjusting the rotational speed of the second motor 46.

[0046] The implementation principle of the spindle sample simulation bench test device in this application is as follows: This application integrates the simulation of multiple environmental factors (including torsion, corrosion, and fretting) during the service of the spindle: The spindle sample is immersed in a liquid medium, and the composition, temperature, and other parameters of the liquid medium can be adjusted according to actual needs, thereby simulating the corrosion behavior of the spindle in the liquid environment; the torsion drive mechanism 3 drives the two ends of the spindle sample to rotate relative to each other to simulate the torsion condition of the spindle; the linear fretting drive mechanism 4 drives the liquid environment tank 2 to slide back and forth, causing the liquid medium contained therein to slosh, thereby simulating the relative motion between the liquid medium and the spindle. Various environmental factors can be applied to the spindle sample individually, or multiple environmental factors can be applied to the spindle sample simultaneously to study the behavior of the spindle material under the combined effect of a single environmental factor or multiple environmental factors, which is particularly suitable for simulating the complex working conditions of spindle-type workpieces such as propeller spindles and agitator spindles.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spindie-like component simulation bench test apparatus, characterized by: include: Base; A liquid environment tank is used to hold a liquid medium, and the spindle sample is immersed in the liquid medium; The liquid environment tank is slidably mounted on the base in a horizontal direction; Torsion drive mechanism, used to drive the two ends of the spindle sample to twist relative to each other; A linear micro-motion drive mechanism is used to drive the liquid environment tank to slide back and forth in the horizontal direction, causing the liquid medium contained therein to sway, thereby generating relative motion between the liquid medium and the main shaft sample.

2. A spindie mockup rig test apparatus according to claim 1, characterized in that: A slide rail is fixedly mounted on the base, and a sliding seat is slidably mounted on the slide rail. The liquid environment tank is fixedly mounted on the sliding seat.

3. A spindie mockup rig test apparatus according to claim 2, characterized in that: The liquid environment tank is rotatably connected to two ends of a torsion drive shaft. The two torsion drive shafts are coaxial. One end of each torsion drive shaft is located inside the liquid environment tank and is fixedly connected to a clamping member. The two clamping members are respectively clamped to both ends of the main shaft sample. The torsion drive mechanism is used to drive the torsion drive shaft to rotate.

4. The spindie mockup bench test apparatus of claim 3, wherein: The torsion drive mechanism is used to drive one of the torsion drive shafts to rotate, or to drive two torsion drive shafts to rotate in opposite directions.

5. A spindie mockup rig test apparatus according to claim 4, wherein: The torsion drive mechanism includes a torsion telescopic member and a torsion drive assembly. One end of the torsion telescopic member is connected to the end of the torsion drive shaft located outside the liquid environment tank, and the other end of the torsion telescopic member is connected to the torsion drive assembly. The torsion drive assembly is fixedly mounted on the base. The torsion drive assembly is used to drive the torsion telescopic member to rotate around its own axis, thereby driving the torsion drive shaft to rotate.

6. A spindie mockup rig test apparatus as claimed in claim 5, wherein: The torsional expansion member can adaptively expand and contract as the liquid environment tank slides back and forth.

7. A spindie mockup rig test apparatus as claimed in claim 6, wherein: The torsion telescopic component includes a telescopic rod, a first universal joint, and a second universal joint. The two ends of the first universal joint are respectively connected to one end of the telescopic rod and the torsion drive shaft, and the two ends of the second universal joint are respectively connected to the other end of the telescopic rod and the torsion drive assembly.

8. The spindie mockup bench test apparatus of claim 2, wherein: The sliding seat is equipped with a braking mechanism for braking the torsion drive shaft.

9. The spindie mockup bench test apparatus of claim 2, wherein: A mounting platform is fixedly provided on one side of the base, and a fixed seat is fixedly provided on the mounting platform. The linear micro-motion drive mechanism includes a horizontal guide rail fixedly provided on the fixed seat and a first slider slidably provided on the horizontal guide rail. The horizontal guide rail is parallel to the guide rail, and the first slider is connected to the sliding seat. The linear micro-motion drive mechanism also includes an eccentric drive component for driving the first slider to reciprocate along the horizontal guide rail.

10. A spindie mockup rig test apparatus as claimed in claim 9, wherein: The eccentric drive assembly includes an eccentric block, a first bevel gear set, and a spline shaft. The spline shaft is rotatably mounted on the fixed base. The first bevel gear set includes a first bevel gear, a second bevel gear, and a right-angle connector. The first and second bevel gears are rotatably connected to both sides of the right-angle connector, and the first bevel gear meshes with the second bevel gear. The first bevel gear is slidably sleeved on the spline shaft and rotates synchronously with it. The right-angle connector is rotatably connected to the spline shaft. The second bevel gear is coaxially fixed to the eccentric block. The fixed base is also provided with a transmission assembly for driving the spline shaft to rotate.

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