An intelligent oil cylinder synchronous lifting operating table and hydraulic control system

Abstract

The present invention discloses an intelligent oil cylinder synchronous lifting operating table and a hydraulic control system, which relates to the field of hydraulic control. The following scheme is proposed, wherein the control system comprises: a weighing sensor fixed on the surface of the angle adjustment table, used to obtain the weight value of the bed surface; a data acquisition module, used to obtain the real-time hydraulic value of the output end of the oil pump; a speed recognition module, which inputs the weight value and the real-time hydraulic value as hydraulic lifting data into a trained speed recognition model to obtain the execution speed of the oil pump; a control module, which controls the operation of the oil pump based on the execution speed value; and allows the oil cylinder to always maintain the same telescopic speed to improve the lifting stability of the operating table.

Description

Technical Field

[0001] The invention relates to the field of hydraulic control, and in particular to an intelligent oil cylinder synchronous lifting operating table and a hydraulic control system. Background Art

[0002] The operating table is an important medical device in clinical surgery. The difference between the operating table and the traditional bed or medical bed is that the operating table can be stably raised and lowered during the operation to meet different surgical needs. At present, the lifting and angle deflection of the operating table are mainly driven by the oil cylinder. The power and control of the oil cylinder come from the hydraulic system. The known hydraulic system mainly includes an oil tank, an oil pump and a solenoid valve.

[0003] For example, a Chinese invention patent with authorization announcement number CN110221569B discloses a high-reliability operating bed hydraulic control system, including: a driving unit, the driving unit includes a first switch unit and a second switch unit driven in series with each other, the first switch unit and the second switch unit are respectively used to control the on and off of the power supply, so that the driving unit controls the operation of the target unit to be driven; a control unit, the control unit includes a first control system and a second control system, wherein the first control system and the second control system are connected to the driving unit in parallel, and the first switch unit and the second switch unit both realize the input of the first control system and the second control system signal through OR logic, so that the first control system or the second control system can independently control the first switch unit and the second switch unit; when the first control system fails, the control unit can be controlled by the second control system, so as to realize controllable failure and rapid response, and maximize the reliability and safety of the control system;

[0004] It controls pipeline flow through multiple solenoid valves to achieve control of cylinders in different positions. This hydraulic system requires many solenoid valve signal points to be controlled and the control is complex. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose an intelligent oil cylinder synchronous lifting operating table and hydraulic control system to achieve single valve multi-way control, and control the connecting oil cylinders by different angles, which is simple to control.

[0006] In order to achieve the above technical objectives, the present invention provides an intelligent oil cylinder hydraulic control system, which is applied to a synchronous lifting operating table. The synchronous lifting operating table comprises:

[0007] A base, the upper surface of which is fixed with a Y-axis oil cylinder, the output end of which is fixed with an angle adjustment platform, and the Y-axis oil cylinder is fixedly connected to a bed surface via the angle adjustment platform;

[0008] The hydraulic system is fixed in the base and is used to provide hydraulic power for the Y-axis cylinder and the angle adjustment table;

[0009] The hydraulic system includes an oil tank, an oil pump and a diverter valve which are sequentially connected through pipelines;

[0010] The control system comprises:

[0011] A weighing sensor is fixed on the surface of the angle adjustment table to obtain the weight value of the bed surface;

[0012] Data acquisition module, used to obtain the real-time hydraulic value of the output end of the oil pump;

[0013] The speed recognition module inputs the weight value and the real-time hydraulic value as hydraulic lifting data into the trained speed recognition model to obtain the execution speed of the oil pump;

[0014] The control module controls the operation of the oil pump based on the execution speed value.

[0015] Preferably, the training method of the speed recognition model includes:

[0016] Collect i groups of historical hydraulic lifting data and the execution speeds corresponding to the historical hydraulic lifting data; use the historical hydraulic lifting data and the execution speeds corresponding to the historical hydraulic lifting data as a sample set, divide the sample set into a training set and a test set, use the historical hydraulic lifting data in the training set as the input of the speed recognition model, use the execution speed in the training set as the output of the speed recognition model, train the speed recognition model, and output a speed recognition model that meets a preset accuracy, wherein the speed recognition model is either a naive Bayes model or a support vector machine model.

[0017] Preferably, the control system further comprises:

[0018] The fault self-check module calculates the ideal hydraulic value of the oil pump based on the weight value, compares the absolute value of the difference between the real-time hydraulic value and the ideal hydraulic value with the preset error threshold, and determines whether to generate a fault instruction;

[0019] Emergency stop module, which controls the electromagnet to cut off power based on the fault command;

[0020] If the absolute value of the difference between the real-time hydraulic pressure value and the ideal hydraulic pressure value is greater than the preset error threshold, a fixed instruction is generated;

[0021] If the absolute value of the difference between the real-time hydraulic pressure value and the ideal hydraulic pressure value is less than or equal to the preset error threshold, no fixed instruction is generated.

[0022] An intelligent oil cylinder synchronous lifting operating bed is controlled by the above-mentioned intelligent oil cylinder hydraulic control system. The diverter valve includes a valve body and a valve core. The surface of the valve body is annularly and staggeredly fixed with multiple pipe joints. The valve core is rotatably and sealedly connected to the valve body. The surface of the valve core has multiple oil holes arranged in a straight line. A stepper motor is fixed on the surface of the valve body. The stepper motor is used to drive the valve core to rotate to switch the oil holes to connect with pipe joints at different angles.

[0023] Preferably, the angle adjustment platform comprises:

[0024] A fixed bracket, fixed on the output end of the Y-axis cylinder;

[0025] A supporting frame, rotatably connected to the fixing frame;

[0026] A connecting frame, rotatably connected to the supporting frame, and the bed surface is fixed on the connecting frame;

[0027] An X-axis oil cylinder, one end of which is hinged to the fixed frame, and the other end of which is hinged to a first cam, and the first cam is coaxially connected and fixed to the fixed frame and the support frame;

[0028] The Z-axis oil cylinder has one end hinged to the support frame and the other end hinged to a second cam, and the second cam is coaxially connected and fixed to the support frame and the connecting frame.

[0029] Preferably, the valve core is provided with an oil outlet cavity and an oil return cavity which are independent of each other, and the oil outlet cavity and the oil return cavity are respectively connected with the input end of the oil pump and the inner cavity of the oil tank through pipelines.

[0030] Preferably, the pipeline connecting the oil outlet chamber and the oil return chamber is rotatably sealed with the oil outlet chamber and the oil return chamber via a rotary joint.

[0031] Preferably, an electromagnet is fixed inside the valve body, and a spring is sleeved on the outer surface of the valve core, with two ends of the spring respectively abutting against the valve body and the valve core.

[0032] Preferably, the pipe joint includes a first oil outlet joint, a second oil outlet joint, a third oil outlet joint, a first oil return joint, a second oil return joint and a third oil return joint fixed on the valve body.

[0033] Preferably, a dust cover is fixed to the upper surface of the base, a corrugated cover is fixed to the bottom of the bed surface, and the bottom of the corrugated cover is fixedly connected to the top of the dust cover.

[0034] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0035] 1: Multiple oil holes are distributed on the valve core, multiple pipe joints matching the oil holes are fixed on the valve body, and the oil inlets and outlets of multiple cylinders are connected to the pipe joints. By rotating the valve core to switch the oil holes and connect them to pipe joints at different angles, the oil cylinder connected to the oil pump through the diverter valve can be changed. The control signal only needs to control the valve core angle, and the control is simple.

[0036] 2: By real-time monitoring of the weight value applied to the angle adjustment table by the bed surface, the execution speed value of the oil pump is calculated based on the weight value, so that the oil cylinder can change the execution speed of the oil pump according to the weight change of the patient on the bed surface, so that the oil cylinder always maintains the same extension and retraction speed, thereby improving the lifting stability of the operating table. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the overall structure of an intelligent hydraulic cylinder synchronous lifting operating table provided by the present invention;

[0039] Figure 2 A schematic diagram of the front view and cross-section structure of an intelligent oil cylinder synchronous lifting operating table provided by the present invention;

[0040] Figure 3 A schematic diagram of the structure of an angle adjustment platform for an intelligent oil cylinder synchronously lifting an operating table provided by the present invention;

[0041] Figure 4 A schematic diagram of the structure of a diverter valve for an intelligent oil cylinder synchronously lifting operating table provided by the present invention;

[0042] Figure 5 A schematic diagram of the explosion structure of a diverter valve for an intelligent oil cylinder synchronous lifting operating table provided by the present invention;

[0043] Figure 6 A schematic cross-sectional structure diagram of a diverter valve for an intelligent oil cylinder synchronously lifting operating table provided by the present invention;

[0044] Figure 7 A schematic diagram of a state in which the bed surface of an intelligent oil cylinder synchronous lifting operating bed provided by the present invention is lowered along the Y axis;

[0045] Figure 8 A schematic diagram of a state in which the bed surface of an intelligent oil cylinder synchronous lifting operating bed provided by the present invention is turned over with the Z axis as the axis;

[0046] Fig. 9 A schematic diagram of a state in which the bed surface of an intelligent hydraulic cylinder synchronous lifting operating bed provided by the present invention is turned over with the X-axis as the axis;

[0047] Fig.10 A block diagram of an intelligent cylinder hydraulic control system provided by the present invention.

[0048] Description of the drawings: 1. Base; 2. Y-axis cylinder; 3. Angle adjustment table; 31. Fixed frame; 311. X-axis cylinder; 312. First cam; 32. Support frame; 321. Z-axis cylinder; 322. Second cam; 33. Connecting frame; 4. Bed surface; 5. Oil tank; 6. Oil pump; 7. Diverter valve; 71. Valve body; 711a. First oil outlet joint; 711b. First oil return joint; 712a. Second oil outlet joint; 712b. Second oil return joint; 713a. Third oil outlet joint; 713b. Third oil return joint; 72. Valve core; 721. Oil outlet chamber; 722. Oil return chamber; 723. Oil through hole; 73. Electromagnet; 74. Spring; 8. Stepper motor; 9. Bellows; 10. Dust cover; 11. Weighing sensor. DETAILED DESCRIPTION

[0049] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0050] Embodiment 1

[0051] See also Figure 1 , Figure 2 and Figure 7 As shown, the intelligent oil cylinder synchronous lifting operating table described in this embodiment includes a base 1, a Y-axis oil cylinder 2, an angle adjustment platform 3, a bed surface 4, an oil tank 5, an oil pump 6 and a diverter valve 7; the bottom of the Y-axis oil cylinder 2 is fixed on the base 1, and the output end of the Y-axis oil cylinder 2 is connected to the bed surface 4 through the angle adjustment platform 3. The angle adjustment platform 3 and the bed surface 4 can be driven to rise and fall along the Y axis through the Y-axis oil cylinder 2, and the oil in the oil tank 5 is extracted by the oil pump 6 and supplied to the Y-axis oil cylinder 2 through the diverter valve 7.

[0052] Specifically, Figure 2 , Figure 3 , Figure 8 and Fig. 9As shown, the angle adjustment platform 3 includes a fixing frame 31, a supporting frame 32, a connecting frame 33, an X-axis oil cylinder 311, a first cam 312, a Z-axis oil cylinder 321 and a second cam 322;

[0053] The fixed frame 31 is fixedly connected to the output end of the Y-axis oil cylinder 2, the support frame 32 is rotatably connected to the fixed frame 31, the support frame 32 rotates on the fixed frame 31 with the X-axis as the axis, the connecting frame 33 is rotatably connected to the support frame 32, the connecting frame 33 rotates on the support frame 32 with the Z-axis as the axis, and the bed surface 4 is fixed on the connecting frame 33, so that the bed surface 4 is turned over with the X-axis as the axis or with the Z-axis as the axis, so as to assist in adjusting the patient's body angle during clinical surgery;

[0054] Among them, one end of the X-axis cylinder 311 is hinged to the fixed frame 31, and the other end is hinged with a first cam 312, and the first cam 312 is coaxially connected and fixed to the fixed frame 31 and the support frame 32. By pushing the first cam 312 by the X-axis cylinder 311, the first cam 312 can drive the support frame 32 to rotate; one end of the Z-axis cylinder 321 is hinged to the support frame 32, and the other end is hinged with a second cam 322, and the second cam 322 is coaxially connected and fixed to the support frame 32 and the connecting frame 33. By pushing the second cam 322 to rotate by the Z-axis cylinder 321, the second cam 322 can drive the connecting frame 33 to rotate.

[0055] For further information, see Figure 4 , Figure 5 and Figure 6 As shown, the diverter valve 7 includes a valve body 71 and a valve core 72. The surface of the valve body 71 is annularly and staggeredly fixed with multiple pipe joints for connecting to the Y-axis cylinder 2, the X-axis cylinder 311 and the Z-axis cylinder 321. The valve core 72 is rotatably sealed and connected to the valve body 71. The surface of the valve core 72 has multiple oil holes 723 arranged in a straight line. A stepper motor 8 is fixed on the surface of the valve body 71. The stepper motor 8 is used to drive the valve core 72 to rotate to switch the oil holes 723 to be connected with pipe joints at different angles, so that the Y-axis cylinder 2, the X-axis cylinder 311 and the Z-axis cylinder 321 are all controlled by the diverter valve 7.

[0056] Furthermore, the valve core 72 is provided with an independent oil outlet chamber 721 and an oil return chamber 722, which are communicated with the input end of the oil pump 6 and the inner chamber of the oil tank 5 through pipelines, respectively. The pipeline connecting the oil outlet chamber 721 and the oil return chamber 722 is connected with the oil outlet chamber 721 and the oil return chamber 722 through a rotary joint to rotate and seal with the oil outlet chamber 721 and the oil return chamber 722, so as to ensure that the oil pump 6 delivers oil into the oil outlet chamber 721 without affecting the rotation of the valve core 72. The oil entering the oil outlet chamber 721 enters the pipe joint through the oil through hole 723, and can be input into the Y-axis oil cylinder 2, the X-axis oil cylinder 311 or the Z-axis oil cylinder 321. Conversely, the oil in the Y-axis oil cylinder 2, the X-axis oil cylinder 311 or the Z-axis oil cylinder 321 can reach the oil through hole 723 through the corresponding pipe joint, and then enter the oil return chamber 722, and flow back into the oil tank 5 from the oil return chamber 722.

[0057] Specifically, Figure 3 , Figure 5 and Figure 6 As shown, the pipe joint includes a first oil return joint 711b, a second oil return joint 712b, a third oil return joint 713b, a first oil outlet joint 711a, a second oil outlet joint 712a and a third oil outlet joint 713a fixed on the valve body 71. Taking the Y-axis oil cylinder 2 as an example, the two oil inlets and outlets of the Y-axis oil cylinder 2 are respectively connected to the first oil outlet joint 711a and the first oil return joint 711b through a conduit. When the valve core 72 rotates to switch the oil through hole 723 to be connected to the corresponding first oil outlet joint 711a and the first oil return joint 711b, the oil can be injected into the Y-axis oil cylinder 2 and the return oil from the Y-axis oil cylinder 2 can be received, thereby controlling the Y-axis oil cylinder 2;

[0058] It is worth mentioning that see Figure 4 and Figure 5 As shown, since the first oil return joint 711b, the second oil return joint 712b, the third oil return joint 713b, the first oil outlet joint 711a, the second oil outlet joint 712a and the third oil outlet joint 713a are staggered, and the plurality of oil through holes 723 are linearly distributed, after the valve core 72 switches the angle, the oil through hole 723 will only be connected to two pipe joints located on the same straight line at a time, which are used for oil outlet and oil return respectively;

[0059] It should be noted that the number of pipe joints in this embodiment can be set according to the number of cylinders to be controlled, and a control table can be pre-established for the angle between each cylinder and the connected pipe joint to facilitate the control of the stepper motor 8. In addition, the present embodiment does not set a reversing pipe joint. Those skilled in the art can add reversible pipe joints as needed, that is, reverse the oil output and return oil, or directly add a reversing valve between the output end of the oil pump 6 and the valve core 72, and the reversing operation can also be performed in the same way. The specific implementation method is not specifically limited here.

[0060] For further information, see Figure 4 and Figure 5 As shown, when the number of pipe joints exceeds three groups, by rotating the valve core 72 to switch the control object, the oil through hole 723 will contact the uncontrolled pipe joint when it is in the switching position, causing oil leakage. After the oil supply is switched to the controlled pipe joint, the oil supply needs to be cut off and oil leakage needs to be avoided to ensure the stability of the oil cylinder after the telescopic adjustment. The valve core 72 needs to be rotated to the empty position, that is, the position without the pipe joint every time the oil supply is completed. The operation is cumbersome, so an electromagnet 73 is fixed inside the valve body 71, and a spring 74 is sleeved on the outer surface of the valve core 72. The two ends of the spring 74 are respectively The oil hole 723 is connected with the pipe joint by the spring 74, and the oil hole 723 is connected with the pipe joint by the spring 74.

[0061] like Figure 1 As shown, a dust cover 10 is fixed on the upper surface of the base 1, and the dust cover 10 is composed of multiple sections of telescopically connected sub-dust covers to cooperate with the lifting and lowering of the Z-axis cylinder 321. A corrugated cover 9 is fixed at the bottom of the bed surface 4, and the bottom of the corrugated cover 9 is fixedly connected to the top of the dust cover 10. The corrugated cover 9 is made of flexible material, such as rubber or flexible plastic, etc., which is not specifically limited here, to cooperate with the angle adjustment of the angle adjustment platform 3.

[0062] Embodiment 2

[0063] See also Fig.10 As shown, based on the first embodiment, the intelligent oil cylinder hydraulic control system described in this embodiment is applied to the above-mentioned intelligent oil cylinder synchronous lifting operating table, and the control system includes: a weighing sensor 11, a data acquisition module, a speed identification module and a control module, and each module and the weighing sensor 11 are connected by wire and / or wirelessly;

[0064] The weighing sensor 11 is fixed on the surface of the angle adjustment table 3 to obtain the weight value of the bed surface 4; the speed recognition module inputs the weight value and the real-time hydraulic value as hydraulic lifting data into the trained speed recognition model to obtain the execution speed of the oil pump 6; the control module controls the oil pump 6 to work based on the execution speed value, that is, controls the motor in the oil pump 6 to work according to the execution speed value, the purpose is that the output displacement of the oil pump 6 in this embodiment can be adaptively adjusted according to different patient weights, to ensure that the extension and retraction speed of the Z-axis oil cylinder 321 is not affected, and to ensure the stability of the synchronous lifting of the bed surface 4 and the Z-axis oil cylinder 321;

[0065] Specifically, the training method of the speed recognition model includes:

[0066] i groups of historical hydraulic lifting data and the execution speeds corresponding to the historical hydraulic lifting data are collected; the historical hydraulic lifting data and the execution speeds corresponding to the historical hydraulic lifting data are used as a sample set, the sample set is divided into a training set and a test set, the historical hydraulic lifting data in the training set is used as the input of the speed recognition model, the execution speed in the training set is used as the output of the speed recognition model, the speed recognition model is trained, and a speed recognition model that meets a preset accuracy is output, the speed recognition model is one of a naive Bayes model and a support vector machine model;

[0067] The historical hydraulic lifting data are collected in the experimental environment. Multiple groups of hydraulic lifting data are used in sequence, and then the Z-axis oil cylinder 321 is lifted and lowered multiple times to obtain the execution speeds of multiple oil pumps 6. The technicians select an optimal execution speed corresponding to it. The Z-axis oil cylinder 321 corresponding to the optimal execution speed is lifted and lowered most stably. The hydraulic lifting data in multiple groups are constantly changing, so that i groups of historical hydraulic lifting data can be obtained;

[0068] It should be noted that the data acquisition module is installed on the pipeline connecting the valve core 72 and the oil pump 6 (not shown in the figure). The data acquisition module uses one of the sensors that meet the pressure detection requirements, such as a piezoresistive pressure sensor or a piezoelectric pressure sensor, which is not specifically limited here.

[0069] Furthermore, the control system further includes: a fault self-checking module and an emergency stop module, each module being connected by wire and / or wireless, the fault self-checking module calculating the ideal hydraulic value of the oil pump 6 based on the weight value, comparing the absolute value of the difference between the real-time hydraulic value and the ideal hydraulic value with a preset error threshold, and determining whether to generate a fault instruction; the emergency stop module controlling the electromagnet 73 to execute power off based on the fault instruction;

[0070] If the absolute value of the difference between the real-time hydraulic value and the ideal hydraulic value is greater than the preset error threshold, it is judged as a fault state and a fault instruction is generated; this situation indicates that there is oil leakage in the oil circuit system, that is, from the oil tank 5, the oil pump 6, the diverter valve 7 to the Z-axis cylinder 321, or to the X-axis cylinder 311 and the Z-axis cylinder 321 in sequence, and the emergency stop module controls the electromagnet 73 to execute power off based on the fault instruction. At this time, the diverter valve 7 is in a closed state to avoid operating the bed surface 4 up and down or flipping in the fault state to cause surgical accidents;

[0071] If the absolute value of the difference between the real-time hydraulic pressure value and the ideal hydraulic pressure value is less than or equal to the preset error threshold, it is judged as a non-fault state and no fault instruction is generated.

[0072] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. An intelligent oil cylinder hydraulic control system, applied to synchronous lifting operating table, characterized in that: The synchronous lifting operating table comprises: A base (1) has a Y-axis oil cylinder (2) fixed on its upper surface, an angle adjustment platform (3) fixed to the output end of the Y-axis oil cylinder (2), and the Y-axis oil cylinder (2) is fixedly connected to a bed surface (4) via the angle adjustment platform (3); A hydraulic system, fixed in the base (1), for providing hydraulic power to the Y-axis cylinder (2) and the angle adjustment table (3); The hydraulic system comprises an oil tank (5), an oil pump (6) and a diverter valve (7) which are connected in sequence through a pipeline; the diverter valve (7) comprises a valve body (71) and a valve core (72); a plurality of pipe joints are fixedly arranged in an annular manner on the surface of the valve body (71); the valve core (72) is rotatably sealedly connected to the valve body (71); a plurality of oil holes (723) are arranged in a straight line on the surface of the valve core (72); a stepping motor (8) is fixed on the surface of the valve body (71); the stepping motor (8) is used to drive the valve core (72) to rotate so as to switch the oil holes (723) to be connected to pipe joints at different angles; The control system comprises: A weighing sensor (11) is fixed to the surface of the angle adjustment platform (3) and is used to obtain the weight value of the bed surface (4); A data acquisition module, used to obtain the real-time hydraulic pressure value of the output end of the oil pump (6); A speed recognition module, which inputs the weight value and the real-time hydraulic value as hydraulic lifting data into a trained speed recognition model to obtain the execution speed of the oil pump (6); The control module controls the oil pump (6) to operate based on the execution speed value.

2. The intelligent cylinder hydraulic control system according to claim 1, characterized in that: The training method of the speed recognition model includes: Collect i groups of historical hydraulic lifting data and the execution speeds corresponding to the historical hydraulic lifting data; use the historical hydraulic lifting data and the execution speeds corresponding to the historical hydraulic lifting data as a sample set, divide the sample set into a training set and a test set, use the historical hydraulic lifting data in the training set as the input of the speed recognition model, use the execution speed in the training set as the output of the speed recognition model, train the speed recognition model, and output a speed recognition model that meets a preset accuracy, wherein the speed recognition model is either a naive Bayes model or a support vector machine model.

3. The intelligent cylinder hydraulic control system according to claim 1, characterized in that: The control system further comprises: A fault self-checking module calculates an ideal hydraulic value of the oil pump (6) based on the weight value, compares the absolute value of the difference between the real-time hydraulic value and the ideal hydraulic value with a preset error threshold, and determines whether to generate a fault instruction; An emergency stop module controls the electromagnet (73) to cut off power based on the fault command; If the absolute value of the difference between the real-time hydraulic pressure value and the ideal hydraulic pressure value is greater than the preset error threshold, a fixed instruction is generated; If the absolute value of the difference between the real-time hydraulic pressure value and the ideal hydraulic pressure value is less than or equal to the preset error threshold, no fixed instruction is generated.

4. An intelligent hydraulic cylinder synchronous lifting operating table, controlled by the intelligent hydraulic cylinder control system according to any one of claims 1 to 3, characterized in that: The angle adjustment platform (3) comprises: A fixed frame (31) is fixed on the output end of the Y-axis oil cylinder (2); A supporting frame (32) rotatably connected to the fixing frame (31); A connecting frame (33) is rotatably connected to the supporting frame (32), and the bed surface (4) is fixed on the connecting frame (33); An X-axis oil cylinder (311) is hingedly connected to the fixing frame (31) at one end and is hingedly connected to a first cam (312) at the other end, and the first cam (312) is coaxially connected and fixed to the fixing frame (31) and the supporting frame (32); The Z-axis oil cylinder (321) has one end hinged to the support frame (32) and the other end hinged to a second cam (322), and the second cam (322) is coaxially connected and fixed to the support frame (32) and the connecting frame (33).

5. The intelligent hydraulic cylinder synchronous lifting operating table according to claim 4 is characterized in that: An independent oil outlet chamber (721) and an oil return chamber (722) are provided inside the valve core (72), and the oil outlet chamber (721) and the oil return chamber (722) are respectively connected to the input end of the oil pump (6) and the inner chamber of the oil tank (5) through pipelines.

6. The intelligent hydraulic cylinder synchronous lifting operating table according to claim 5 is characterized in that: The pipeline connecting the oil outlet chamber (721) and the oil return chamber (722) is rotatably sealedly connected to the oil outlet chamber (721) and the oil return chamber (722) via a rotary joint.

7. The intelligent hydraulic cylinder synchronous lifting operating table according to claim 4 is characterized in that: An electromagnet (73) is fixed inside the valve body (71), and a spring (74) is sleeved on the outer surface of the valve core (72), with two ends of the spring (74) respectively abutting against the valve body (71) and the valve core (72).

8. The intelligent hydraulic cylinder synchronous lifting operating table according to claim 4 is characterized in that: The pipe joint comprises a first oil outlet joint (711a), a second oil outlet joint (712a), a third oil outlet joint (713a), a first oil return joint (711b), a second oil return joint (712b) and a third oil return joint (713b) which are fixed on the valve body (71).

9. The intelligent oil cylinder synchronous lifting operating table according to claim 4 is characterized in that: A dust cover (10) is fixed to the upper surface of the base (1), a corrugated cover (9) is fixed to the bottom of the bed surface (4), and the bottom of the corrugated cover (9) is fixedly connected to the top of the dust cover (10).

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