A torque balancing device and oil supply and return system

Abstract

This invention discloses a torque balancing device and an oil supply and return system, belonging to the technical field of submersion motion test equipment. The torque balancing device is installed on a submersion motion test bench, which includes a column, a platform located inside the column, a crossbeam fixed to the top of the column, and a lifting actuator fixed above the crossbeam. The movable end of the lifting actuator is connected to the platform. The torque balancing device is located between the column and the platform. It is used to counteract the overturning torque caused by the control error of the lifting actuator and the overturning torque caused by a malfunction in the control system of the submersion motion test bench, thus enabling the platform to move vertically along the column. The torque balancing device includes a torque balancing cylinder, a ball joint, and a hydrostatic support plate. The torque balancing cylinder is fixed to the corner beam of the platform, and the hydrostatic support plate is attached to the surface of the column. The piston rod of the torque balancing cylinder is connected to the ball head of the ball joint by screws, and the ball socket of the ball joint is connected to the hydrostatic support plate by screws.

Description

Technical Field

[0001] This invention belongs to the technical field of diving and ascent test equipment, specifically relating to a torque balancing device and an oil supply and return system. Background Technology

[0002] In large vertical motion equipment such as diving and ascent test rigs, the platform needs to achieve long-stroke, high-precision vertical movement along multiple columns. The guiding system and torque balance capability directly determine the accuracy of test data and the safety of equipment operation. In traditional technical solutions, roller guide devices are generally used as the core guiding structure of the platform. Through the rolling contact between several sets of rollers and the column surfaces, the lateral displacement of the platform is constrained. Theoretically, rolling friction can replace sliding friction to reduce motion resistance. However, in practical applications, roller guide devices have the following inherent drawbacks:

[0003] (1) The gap is difficult to eliminate and is prone to induce torque imbalance risk: A small fit gap needs to be reserved between the roller and the column to avoid motion jamming. However, in the scenario of multiple lifting actuators working together, this gap cannot effectively constrain the slight tilting trend of the platform. If the control system suddenly fails, the gap will directly cause the platform to lose lateral constraint, the overturning moment will increase sharply, and it is very easy to cause the platform to deviate, jam, or even have a rigid collision with the column, which seriously threatens the safety of the test.

[0004] (2) Rigid contact wear is severe, resulting in rapid accuracy decay and short lifespan: In the roller guide device, the roller and the column are in rigid contact. During long-term operation, the roller rim and the column guide surface are prone to wear due to friction. Wear not only causes the initial reserved gap to continue to expand, but also leads to a significant decrease in guiding accuracy. At the same time, the worn roller needs to be frequently disassembled and replaced, which not only increases maintenance costs, but also leads to prolonged equipment downtime and affects test efficiency.

[0005] (3) Poor adaptive deformation capability: When the large-scale lifting and diving test platform is running, the crossbeam will be slightly deflected by the lifting actuator, which will cause the relative position of the top and bottom of the column to shift. The roller guide device is a fixed rigid structure and cannot adaptively adjust the contact posture of the roller. When the column has parallelism deviation or structural deformation, some rollers will form a false contact with the column surface, and some rollers will be excessively squeezed, which will not only aggravate local wear, but also increase the fluctuation of the platform's motion resistance, further affecting the stability of vertical motion.

[0006] In summary, the traditional solution based on roller guide devices can no longer meet the technical requirements of high precision, high stability and long life of the diving motion test rig. There is an urgent need for an integrated solution that can take into account adaptive guidance, torque balance and low friction characteristics. Summary of the Invention

[0007] This invention provides a torque balancing device and a supply and return oil system, which has the advantages of effectively counteracting overturning and tipping moments, ensuring stable vertical movement of the platform, and improving equipment service life and motion accuracy.

[0008] This invention provides a torque balancing device, which adopts the following technical solution:

[0009] The torque balancing device is installed on the lifting and diving motion test platform. The lifting and diving motion test platform includes a column, a platform located inside the column, a crossbeam fixed to the top of the column, and a lifting actuator fixed above the crossbeam. The movable end of the lifting actuator is connected to the platform.

[0010] The torque balancing device is located between the column and the platform. The torque balancing device is used to offset the overturning torque caused by the control error of the lifting actuator and the overturning torque caused by the control system failure of the diving motion test bench, so as to realize the vertical movement of the platform along the column.

[0011] The torque balancing device includes a torque balancing cylinder, a ball joint, and a hydrostatic support plate. The torque balancing cylinder is fixed to the corner beam of the platform, the hydrostatic support plate is attached to the surface of the column, the piston rod of the torque balancing cylinder is connected to the ball head of the ball joint by screws, and the ball socket of the ball joint is connected to the hydrostatic support plate by screws.

[0012] Preferably, the end face of the hydrostatic support plate includes a central oil cavity and six oil cavities surrounding the central oil cavity. Each oil cavity is provided with a throttling orifice, through which high-pressure oil enters the oil cavity. The throttling orifice adjusts the pressure to adapt the hydrostatic support plate to different loads.

[0013] Preferably, the end face of the hydrostatic support plate is also provided with an oil return groove for collecting the drained oil, and a sealing ring is arranged around the oil return groove to prevent oil leakage.

[0014] Preferably, the hydrostatic support plate is provided with an oil supply port and an oil drain port on its circumferential surface.

[0015] Preferably, the diving test platform includes four columns, and each corner beam and column support position of the platform is equipped with four sets of torque balancing devices; the hydrostatic support plate has four sets of oil supply and return systems, which are supplied by a hydraulic source.

[0016] The present invention also provides a supply and return oil system for a torque balancing device, used to supply hydraulic oil to the hydrostatic support plate in the torque balancing device and recover the oil, characterized in that it includes a hydraulic source, a supply line and a return line; the supply line delivers the high-pressure oil output from the hydraulic source to the oil chamber of the support of the hydrostatic support plate, and the return line returns the oil in the return groove of the hydrostatic support plate to the hydraulic source;

[0017] The oil supply pipeline is equipped with a filter, a speed control valve, an accumulator, a check valve, and a relief valve. The filter is used to filter the high-pressure oil entering the hydrostatic support plate; the speed control valve is used to control the oil flow rate entering the hydrostatic support plate to maintain a constant flow; the accumulator is used to absorb pressure pulsations and ensure stable oil supply pressure to the hydrostatic support plate; the check valve is used to prevent mutual interference between oils in different hydrostatic support plates; and the relief valve is installed in the oil supply pipeline as a safety valve to prevent system overpressure.

[0018] The return oil pipeline is equipped with a gear pump and a second check valve. The gear pump is used to draw the oil in the return oil groove of the hydrostatic support plate back to the hydraulic source. The return oil pipeline is also equipped with a bypass consisting of a first throttle valve and a third check valve to ensure that the oil suction port of the gear pump does not suck in air and to avoid cavitation of the hydraulic oil.

[0019] Preferably, the system also includes a flushing assembly, which comprises a solenoid valve, a ball valve, and a throttle valve. When the ball valve is closed and the solenoid valve is energized, the oil flow rate is adjusted by the throttle valve to flush the system and raise the oil temperature.

[0020] Preferably, a pressure sensor is also included, which is used to monitor the oil supply pressure of the hydrostatic support plate and can work with the control system to realize pressure abnormality alarm and protection.

[0021] Preferably, the system also includes a displacement monitoring component, which includes a displacement sensor. The displacement sensor is used to monitor the distance between the surface of the hydrostatic support plate and the surface of the column, and can work with the control system to realize alarms and protection for abnormal displacement and abnormal displacement difference.

[0022] Preferably, the intermediate oil cavity of the hydrostatic support plate is connected to the oil cavity between the ball head and the socket of the ball joint, and high-pressure oil can be introduced into the oil cavity between the ball head and the socket to reduce the contact pressure and rotational friction between the ball head and the socket.

[0023] The beneficial effects of this invention are:

[0024] The torque balancing device and its oil supply and return system provided in this application have the following advantages:

[0025] (1) High-efficiency torque balancing and guidance: Through the synergistic effect of torque balancing cylinder, ball joint and hydrostatic support plate, the overturning torque caused by the control error of lifting actuator and the overturning torque when the system fails can be effectively offset. At the same time, the platform movement is precisely guided to ensure that the platform moves stably along the vertical direction of the column and improve the safety of equipment operation.

[0026] (2) Strong adaptive adjustment capability: The torque balance cylinder achieves automatic extension and retraction with the help of disc springs, which can overcome the problem of gap consistency caused by large system stroke and high speed; the ball joint can compensate for processing and installation errors and structural deformation, ensuring that the hydrostatic support plate is always in contact with the column surface, avoiding oil leakage failure, and improving the equipment's adaptability to complex working conditions.

[0027] (3) Improved motion accuracy and lifespan: The hydrostatic support plate has strong anti-eccentric load capacity through the design of 7 oil chambers. With the stable oil supply of the oil supply and return system, it can significantly reduce friction and wear. At the same time, the design of the oil return groove and sealing ring effectively prevents oil leakage and further extends the service life of the equipment.

[0028] (4) Optimization of oil supply and return system: The group independent oil supply and return design is adopted (4 groups of systems share 1 hydraulic power source), combined with filtration, flow regulation and pressure control components to ensure stable oil supply and smooth oil return of the hydrostatic support plate; the oil return drive component and bypass design avoid the phenomenon of air suction and cavitation in the oil return chamber, and improve the reliability of the hydraulic system.

[0029] (5) Multifunctional synergistic effect: The oil cavity in the middle of the hydrostatic support plate is connected to the oil cavity of the ball joint ball head socket, which can reduce the contact pressure and rotational friction of the ball joint, realize the multifunctional synergy of torque balance, guidance and lubrication, and further improve the overall performance of the equipment. Attached Figure Description

[0030] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the structure of the ascent and descent test platform in this embodiment;

[0032] Figure 2 This is a schematic diagram of the composition of the torque balancing device in this embodiment;

[0033] Figure 3 This is a schematic diagram of the hydrostatic support disc structure in this embodiment;

[0034] Figure 4 This is a plan view of the hydraulic pipeline layout for the four sets of torque balancing devices in this embodiment;

[0035] Figure 5 This is a hydraulic schematic diagram of the hydrostatic support plate system in this embodiment;

[0036] Figure 6 This is a hydraulic schematic diagram of a set of hydrostatic support discs in this embodiment;

[0037] Figure 7 This is a schematic diagram of the hydraulic components of a hydrostatic support plate in this embodiment.

[0038] In the diagram: 100, Torque balancing device; 110, Torque balancing cylinder; 120, Ball joint; 130, Hydrostatic support plate; 131, Oil chamber; 132, Throttling orifice; 133, Oil return groove; 134, Sealing ring; 135, Oil supply port; 136, Oil drain port; 200, Column; 300, Platform; 400, Crossbeam; 500, Lifting actuator; 600, Hydraulic source; 700, Oil supply pipeline; 7 10. Filter; 720. Speed ​​control valve; 730. Accumulator; 740. Check valve one; 750. Relief valve; 760. Pressure sensor; 800. Return oil line; 810. Gear pump; 820. Check valve two; 830. Throttle valve one; 840. Check valve three; 900. Flushing assembly; 910. Solenoid valve; 920. Ball valve; 930. Throttle valve two; 1000. Displacement sensor. Detailed Implementation

[0039] The following are specific embodiments of the present invention described in conjunction with the accompanying drawings, further illustrating the technical solutions of the present invention. However, the present invention is not limited to these embodiments. Specific details, such as particular configurations and components, are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0041] like Figures 1-4 As shown, this embodiment provides a torque balancing device, which is installed on a lifting and diving motion test bench. The lifting and diving motion test bench includes a column 200, a platform 300 located inside the column 200, a crossbeam 400 fixed to the top of the column 200, and a lifting actuator 500 fixed above the crossbeam 400. The movable end of the lifting actuator 500 is connected to the platform 300. The torque balancing device 100 is located between the column 200 and the platform 300, and the torque balancing device 100 is used to compensate for the control error of the lifting actuator 500. The generated overturning torque and the overturning torque generated when the control system of the rising and falling motion test platform fails, enable the platform 300 to move vertically along the column 200; the torque balancing device 100 includes a torque balancing cylinder 110, a ball joint 120 and a static pressure support plate 130. The torque balancing cylinder 110 is fixed on the corner beam of the platform 300, the static pressure support plate 130 is attached to the surface of the column 200, the piston rod of the torque balancing cylinder 110 is connected to the ball head of the ball joint 120 by screws, and the ball socket of the ball joint 120 is connected to the static pressure support plate by screws.

[0042] Specifically, the torque balancing cylinders 110 at the corner beam of platform 300 are symmetrically arranged to form a four-point support system. When the control error of the lifting actuator 500 causes the platform 300 to tilt, the piston rod of the torque balancing cylinder 110 transmits the offset torque to the hydrostatic support plate 130 through the ball joint 120. The self-adaptability of the torque balancing cylinder 110 (automatic extension and retraction of the disc spring) overcomes the defect that the clearance consistency of ordinary guiding devices cannot meet the requirements due to the large system stroke and high speed. The ball joint 120 compensates for machining and installation errors and structural deformation, ensuring that the hydrostatic support plate 130 is always in contact with the surface of the column 200, preventing the hydrostatic support plate 130 from leaking oil and failing. The hydrostatic support plate 130 reduces friction, ensures the motion accuracy of the platform 300, and reduces wear, thus improving the service life of the equipment. This integrated design achieves active torque balancing while maintaining guiding accuracy through hydraulic support, solving the problems of jamming and oil leakage caused by the non-adjustable clearance of traditional devices.

[0043] Furthermore, the end face of the hydrostatic support plate 130 includes a central oil cavity 131 and six oil cavities 131 surrounding the central oil cavity 131. Each oil cavity 131 is provided with a throttling orifice 132. High-pressure oil enters the oil cavity 131 through the throttling orifice 132. The throttling orifice 132 adjusts the pressure to allow the hydrostatic support plate 130 to adapt to different loads.

[0044] Specifically, the central oil chamber 131 and the six peripheral oil chambers 131 form a multi-region pressure unit. Each oil chamber 131 independently adjusts the oil flow rate through the throttling orifice 132. Through the dynamic balance of pressure in each oil chamber 131, the hydrostatic support plate 130 can adapt to different eccentric load conditions, maintain a uniform pressure distribution in the oil chambers 131, prevent oil leakage or sudden changes in friction caused by excessively high or low local pressure, improve the system's anti-eccentric load capability and operational stability, and extend the service life of the hydrostatic support plate 130.

[0045] Furthermore, the end face of the hydrostatic support plate 130 is also provided with an oil return groove 133 for collecting the drained oil, and a sealing ring 134 is arranged around the oil return groove 133 to prevent oil leakage.

[0046] Specifically, the leaked oil is collected by the oil return groove 133 and guided to the oil return pipeline 800, preventing oil from stagnating on the end face of the hydrostatic support plate 130 or overflowing along the gap. Simultaneously, the sealing ring 134 forms a second sealing barrier around the oil return groove 133, further preventing oil leakage from the installation gap between the hydrostatic support plate 130 and adjacent components. The oil return groove 133 and the sealing ring 134 work together to both actively guide the flow, reducing oil accumulation, and passively block leakage paths, thereby improving sealing reliability.

[0047] Furthermore, the hydrostatic support plate 130 is provided with an oil supply port 135 and an oil drain port 136 on its circumferential surface. Specifically, the oil supply port 135 is arranged along the circumferential surface to allow high-pressure oil to enter the central oil chamber 131 and the peripheral oil chambers 131, avoiding excessive local pressure or uneven oil film thickness caused by concentrated oil injection; the oil drain port 136 is arranged along the circumferential surface, and the gear pump 810 of the return oil pipeline 800 draws the oil back to the oil tank by generating negative pressure, avoiding the risk of leakage caused by oil stagnation. The spatial separation design of the oil supply port 135 and the oil drain port 136 on the circumferential surface ensures that the oil injection and recovery paths do not interfere with each other, and at the same time, the circumferentially uniformly distributed oil film pressure counteracts the off-center load moment caused by the offset of the platform 300, maintaining the dynamic pressure balance of each oil chamber 131.

[0048] Furthermore, the lifting and diving test rig includes four columns 200, and each corner beam of the platform 300 and the support position of the columns 200 are equipped with four sets of torque balancing devices 100; the oil supply and return system of the hydrostatic support plate 130 includes four sets, which are supplied by a hydraulic source 600.

[0049] Specifically, four columns 200 are symmetrically arranged to form a rectangular support structure. Four sets of torque balancing devices 100 are installed at the contact points between each corner beam of the platform 300 and the column 200. This ensures that the overturning torque at each support point during vertical movement of the platform 300 is synchronously canceled by the four-way distributed balancing devices, preventing uneven torque distribution caused by the large number of columns 200. Each column 200 has four hydrostatic support plates 130 on both sides, totaling sixteen hydrostatic support plates 130 across the four columns. Each hydrostatic support plate 130 has its oil supply flow regulated by a speed control valve. The return oil lines of the four hydrostatic support plates 130 are combined and then pumped back to the oil tank by a gear pump 810, for a total of four gear pumps. The oil circuits of the four sets of torque balancing devices 100 on the four columns 200 share the same high-pressure oil output from the same hydraulic source 600.

[0050] like Figures 5-7 As shown, this embodiment also provides a supply and return oil system for a torque balancing device, used to supply hydraulic oil to the hydrostatic support plate 130 in the torque balancing device 100 and recover the oil. The supply and return oil system includes a hydraulic source 600, a supply line 700, and a return line 800. The supply line 700 delivers the high-pressure oil output from the hydraulic source 600 to the oil chamber 131 of the hydrostatic support plate 130, and the return line 800 returns the oil in the return groove 133 of the hydrostatic support plate 130 back to the hydraulic source 600.

[0051] The oil supply line 700 is equipped with a filter 710, a speed control valve 720, an accumulator 730, a check valve 740, and a relief valve 750. The filter 710 is used to filter the high-pressure oil entering the static pressure support plate 130; the speed control valve 720 is used to control the oil flow rate entering the static pressure support plate 130 to keep it constant; the accumulator 730 is used to absorb pressure pulsations and ensure the stability of the oil supply pressure of the static pressure support plate 130; the check valve 740 is used to prevent the oil from affecting each other between different static pressure support plates 130; and the relief valve 750 is installed in the oil supply line 700 as a safety valve to prevent system overpressure.

[0052] The return oil line 800 is equipped with a gear pump 810 and a check valve 820. The gear pump 810 is used to pump the oil in the return oil groove 133 of the hydrostatic support plate 130 back to the hydraulic source 600. The return oil line 800 is also equipped with a bypass consisting of a throttle valve 830 and a check valve 840 to ensure that the oil suction port of the gear pump 810 does not suck in cavitation and to avoid cavitation of the hydraulic oil.

[0053] Through the above technical solutions, this application solves the problem of uneven load bearing caused by fluctuations in the oil supply pressure of the hydrostatic support plate 130, and avoids friction and wear caused by oil impurities; it maintains the consistency of oil film thickness through constant flow control, and improves the guiding accuracy of the hydrostatic support; the forced oil return system effectively prevents oil retention and leakage, and the bypass structure eliminates the risk of cavitation of hydraulic components; the coordinated work of each component realizes stable oil supply pressure, improved oil return efficiency and system safety protection, and ensures that the torque balancing device 100 operates stably in the lifting and submerging motion test bench.

[0054] Furthermore, the system also includes a flushing assembly 900, which includes a solenoid valve 910, a ball valve 920, and a throttle valve 930. When the ball valve 920 is closed and the solenoid valve 910 is energized, the oil flow rate is adjusted by the throttle valve to flush the system and raise the oil temperature.

[0055] Through the above technical solution, this application achieves autonomous cleaning and maintenance of the hydraulic system's internal oil, effectively removing deposited contaminants from pipelines and components, and maintaining oil cleanliness within a reasonable range. Simultaneously, the controllable temperature rise generated by the throttling effect solves the problem of system response lag caused by excessive oil viscosity at low temperatures, reduces the risk of abnormal wear of hydraulic components, and avoids motion jamming caused by insufficient oil flow.

[0056] Furthermore, the system also includes a pressure sensor 760, which is used to monitor the oil supply pressure of the hydrostatic support plate 130 and can work with the control system to realize pressure abnormality alarm and protection.

[0057] Through the above technical solution, this application can effectively identify abnormal oil supply pressure of the hydrostatic support plate 130, trigger the protection mechanism in a timely manner, avoid hydraulic component rupture or oil leakage caused by excessive pressure, and prevent the platform 300 support force from decreasing due to insufficient pressure. Through automated pressure monitoring and protection procedures, the risk of equipment damage is significantly reduced and the system's operational stability is maintained.

[0058] Furthermore, the system also includes a displacement monitoring component, which includes a displacement sensor 1000. The displacement sensor 1000 is used to monitor the distance between the surface of the hydrostatic support plate 130 and the surface of the column 200, and can work with the control system to realize alarms and protection for abnormal displacement and abnormal displacement difference.

[0059] Through the above technical solution, this application can effectively identify sudden changes or uneven distribution of the gap between the hydrostatic support plate 130 and the column 200, and promptly trigger protective actions to avoid oil leakage and a surge in frictional resistance. At the same time, by dynamically adjusting the hydraulic parameters, the uniformity of the oil film thickness is maintained, thereby reducing abnormal wear of the guide components and ensuring the long-term operational accuracy and stability of the lifting and diving motion test bench.

[0060] Furthermore, the intermediate oil cavity 131 of the hydrostatic support plate 130 is connected to the oil cavity 131 between the ball head and the socket of the ball joint 120, and high-pressure oil can be introduced into the oil cavity 131 between the ball head and the socket to reduce the contact pressure and rotational friction between the ball head and the socket.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A torque balancing device, characterized in that, The torque balancing device (100) is installed on the lifting and diving motion test platform. The lifting and diving motion test platform includes a column (200), a platform (300) located inside the column (200), a crossbeam (400) fixed to the top of the column (200), and a lifting actuator (500) fixed above the crossbeam (400). The movable end of the lifting actuator (500) is connected to the platform (300). The torque balancing device (100) is located between the column (200) and the platform (300). The torque balancing device (100) is used to offset the overturning torque generated by the control error of the lifting actuator (500) and the overturning torque generated when the control system of the diving motion test bench fails, so as to realize the vertical movement of the platform (300) along the column (200). The torque balancing device (100) includes a torque balancing cylinder (110), a ball joint (120), and a hydrostatic support plate (130). The torque balancing cylinder (110) is fixed on the corner beam of the platform (300), and the hydrostatic support plate (130) is attached to the surface of the column (200). The piston rod of the torque balancing cylinder (110) is connected to the ball head of the ball joint (120) by screws, and the ball socket of the ball joint (120) is connected to the hydrostatic support plate by screws. It also includes a supply and return oil system for supplying hydraulic oil to the hydrostatic support plate (130) in the torque balancing device (100) and recovering the oil. The supply and return oil system includes a hydraulic source (600), a supply line (700), and a return line (800). The supply line (700) delivers the high-pressure oil output from the hydraulic source (600) to the oil chamber (131) of the support of the hydrostatic support plate (130), and the return line (800) returns the oil in the return groove (133) of the hydrostatic support plate (130) back to the hydraulic source (600). The oil supply line (700) is equipped with a filter (710), a speed control valve (720), an accumulator (730), a check valve (740), and an overflow valve (750). The filter (710) is used to filter the high-pressure oil entering the static pressure support plate (130); the speed control valve (720) is used to control the oil flow rate entering the static pressure support plate (130) to keep it constant; the accumulator (730) is used to absorb pressure pulsations and ensure the stability of the oil supply pressure of the static pressure support plate (130); the check valve (740) is used to avoid mutual influence between oils in different static pressure support plates (130); and the overflow valve (750) is installed in the oil supply line (700) as a safety valve to prevent system overpressure. The return oil pipeline (800) is equipped with a gear pump (810) and a check valve (820); the gear pump (810) is used to pump the oil in the return oil groove (133) of the hydrostatic support plate (130) back to the hydraulic source (600); the return oil pipeline (800) is also equipped with a bypass consisting of a throttle valve (830) and a check valve (840) to ensure that the oil suction port of the gear pump (810) does not suck in air and to avoid cavitation of the hydraulic oil; The oil supply and return system also includes a flushing assembly (900), which includes a solenoid valve (910), a ball valve (920), and a second throttle valve (930). When the ball valve (920) is closed and the solenoid valve (910) is energized, the oil flow rate is adjusted through the throttle valve to flush the system and raise the oil temperature. The oil supply and return system also includes a pressure sensor (760), which is used to monitor the oil supply pressure of the hydrostatic support plate (130) and can work with the control system to realize pressure abnormality alarm and protection. The oil supply and return system also includes a displacement monitoring component, which includes a displacement sensor (1000). The displacement sensor (1000) is used to monitor the distance between the surface of the hydrostatic support plate (130) and the surface of the column (200), and can cooperate with the control system to realize displacement abnormality and displacement difference abnormality alarm and protection. The intermediate oil cavity (131) of the hydrostatic support plate (130) is connected to the oil cavity (131) between the ball head and the socket of the ball joint (120). High-pressure oil can be introduced into the oil cavity (131) between the ball head and the socket to reduce the contact pressure and rotational friction between the ball head and the socket. The end face of the hydrostatic support plate (130) is also provided with an oil return groove (133) for collecting the drained oil, and a sealing ring (134) is arranged around the oil return groove (133) to prevent oil leakage.

2. The torque balancing device according to claim 1, characterized in that, The end face of the hydrostatic support plate includes a central oil cavity (131) and six oil cavities (131) surrounding the central oil cavity (131). Each oil cavity (131) is provided with a throttling orifice (132). High-pressure oil enters the oil cavity (131) through the throttling orifice (132). The throttling orifice (132) adjusts the hydrostatic support plate (130) to adapt to different loads through pressure regulation.

3. The torque balancing device according to claim 1, characterized in that, The hydrostatic support plate is provided with an oil supply port (135) and an oil drain port (136) on its circumferential surface.

4. The torque balancing device according to claim 1, characterized in that, The diving test platform includes four columns (200), and each corner beam of the platform (300) and the support position of the column (200) are equipped with four sets of torque balancing devices (100); the oil supply and return system of the hydrostatic support plate includes four sets, which are supplied by a hydraulic source (600).

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