Integrated hydraulic cylinder cluster synchronous control system

Abstract

The invention provides an integrated hydraulic cylinder cluster synchronous control system which comprises a hydraulic transmission loop and an electro-hydraulic control system, the hydraulic transmission loop comprises multiple sets of oil cylinders connected with a rapid emergency gate, at least two sets of oil pump motor sets and an energy accumulator module, and the multiple sets of oil pump motor sets are connected with the multiple sets of oil cylinders after being connected with the energy accumulator module in parallel; the hydraulic transmission loop further comprises an electromagnetic overflow valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve, an electromagnetic speed regulating valve, a manual speed regulating valve and a balance valve, and two sets of parallel flow control units are arranged on each oil cylinder transmission loop and used for controlling the speed of the oil cylinders. The electro-hydraulic control system comprises a pressure sensor connected with the energy accumulator module, a pressure sensor connected with the oil cylinder, a travel switch, a displacement sensor and an opening instrument connected with the gate. The power requirements of the quick emergency gate under different working conditions are met, and the compound control method of the multiple hydraulic hoist oil cylinders is achieved.

Description

Technical Field

[0001] The invention relates to the field of hydraulic systems for hydraulic hoists, and in particular to an integrated hydraulic cylinder cluster synchronous control system. Background Art

[0002] A fast emergency gate is a gate that can cut off the flow of water in moving water in order to handle or prevent accidents occurring downstream in the waterway. The layout and type of the emergency gate must be technically and economically compared in combination with the overall planning of the project and the overall layout of hydraulic structures. Its hydraulic performance and the dynamic performance of the gate structure are directly related to the technical feasibility, reliability, economic rationality and safety of the right bank flood discharge tunnel working gate and flood discharge structure operation.

[0003] The operation of this system relies on the coordinated work of multiple hydraulic cylinders, and the integrated control system is used to precisely control each hydraulic cylinder. In order to respond quickly to different emergencies, multiple rapid emergency gates need to be accurately driven independently or synchronously to meet the flow and pressure requirements of the system and ensure rapid response in emergency situations to prevent accidents. Summary of the invention

[0004] The main purpose of the present invention is to provide an integrated hydraulic cylinder cluster synchronous control system to solve the composite control method of multiple hydraulic hoist cylinders of rapid emergency gates, so as to overcome the shortcomings of the prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an integrated hydraulic cylinder cluster synchronous control system, including a hydraulic transmission circuit and an electro-hydraulic control system, characterized in that: the hydraulic transmission circuit includes multiple groups of cylinders connected to the rapid emergency gate and of equal number, at least two sets of oil pump motor groups and accumulator modules, and the multiple groups of oil pump motor groups are connected to the accumulator module in parallel and connected to the multiple groups of cylinders through transmission pipelines; The hydraulic transmission circuit also includes an electromagnetic overflow valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve, an electromagnetic speed regulating valve, a manual speed regulating valve and a balancing valve. Each oil cylinder transmission circuit is provided with two sets of parallel flow control units for controlling the speed of the oil cylinder; The electro-hydraulic control system includes a first pressure sensor and a second pressure sensor connected to the accumulator module, a third pressure sensor and a fourth pressure sensor connected to the oil cylinder, a travel switch, a displacement sensor, and an opening meter connected to the gate.

[0006] In the preferred embodiment, the motor pump group in each oil pump motor group is connected to an electromagnetic overflow valve for controlling the pressure charging of the accumulator module.

[0007] In the preferred embodiment, the multiple accumulators in the accumulator module are connected to the first pressure sensor and the first electromagnetic reversing valve through pipelines, and then connected in parallel with the oil pump motor unit through a main pipe, and then connected to multiple groups of oil cylinders and their transmission circuits. A second pressure sensor is also provided on the main pipe.

[0008] In the preferred embodiment, a second electromagnetic reversing valve and an electromagnetic speed control valve are connected in series to form a flow control unit for a group of cylinders. After the two groups of cylinder flow control units are connected in parallel, they are connected to the manual speed control valve and the balancing valve in turn through pipelines and then connected to the cylinders to form a set of cylinders and their hydraulic transmission circuits.

[0009] In the preferred embodiment, the oil inlet of the second electromagnetic reversing valve is connected to the accumulator module or the oil pump motor unit, the oil return port is connected to the electromagnetic speed control valve, and the two working oil ports are respectively connected to the rod chamber and the rodless chamber of the cylinder.

[0010] In the preferred embodiment, a third pressure sensor is provided between the working oil port on one side of the two second solenoid reversing valves and the rod chamber, and a fourth pressure sensor is provided between the working oil port on the other side and the rodless chamber. A flow sensor is also provided on the throttle valve of the solenoid speed control valve for measuring the actual amount of oil flowing through.

[0011] In the preferred embodiment, a manual speed regulating valve is provided between the working oil port of the second electromagnetic reversing valve and the rod chamber, and a balancing valve is provided between the rod chamber and the rodless chamber of the oil cylinder.

[0012] In the preferred embodiment, a travel switch is provided on one side of the piston rod of the oil cylinder for limiting the travel of the piston rod; The oil cylinder or its piston rod is provided with a displacement sensor for detecting the running speed of the oil cylinder; The multiple rapid emergency gates are all provided with opening meters for detecting the opening and closing conditions of the gates.

[0013] In the preferred embodiment, a main control system is provided, and each group of oil cylinders and their hydraulic transmission circuits are provided with a main control unit, and the main control unit is electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, the travel switch, the displacement sensor, the opening meter, and the flow sensor; The main control unit is also electrically connected to the electromagnetic overflow valve, the first electromagnetic reversing valve, the second electromagnetic reversing valve, the electromagnetic speed regulating valve, the manual speed regulating valve, the balancing valve, the oil pump motor unit and its feedback module; The main control system is also provided with an alarm unit, and each main control unit is connected to the alarm unit through its internal communication module for alarming different valve working conditions.

[0014] In a preferred embodiment, the main control unit of the plurality of oil cylinders and their hydraulic transmission circuits is electrically connected to one or more communication units for communicating with a host computer or a host network via the communication units; The main control system is also provided with a time synchronization unit, which is electrically connected to each main control unit for realizing synchronous control; The time synchronization unit is also electrically connected to the alarm unit for issuing an alarm for the synchronization status.

[0015] The present invention provides an integrated hydraulic cylinder cluster synchronous control system, including a hydraulic transmission circuit and an electro-hydraulic control system, wherein the hydraulic transmission circuit includes multiple groups of oil cylinders connected to a rapid emergency gate and having an equal number, at least two sets of oil pump motor groups and an accumulator module, and the multiple groups of oil pump motor groups are connected to the accumulator module in parallel and connected to the multiple groups of oil cylinders through transmission pipelines. In an emergency, the accumulator module 3 is used as a hydraulic power oil source to replace the oil pump motor, and provides the oil required by the rodless chamber of the oil cylinder 1 when closing the door, so as to achieve the effect of rapid door closing of the system; The hydraulic transmission circuit also includes an electromagnetic overflow valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve, an electromagnetic speed regulating valve, a manual speed regulating valve and a balancing valve. Two sets of parallel flow control units are provided on each oil cylinder transmission circuit to control the speed of the oil cylinder by adjusting the opening and number of each valve; The electro-hydraulic control system includes a first pressure sensor and a second pressure sensor connected to the accumulator module, a third pressure sensor, a fourth pressure sensor, a travel switch, and a displacement sensor connected to the oil cylinder, and an opening meter connected to the gate. It can monitor the closing device and the gate operation status in real time, can meet the power requirements of the rapid emergency gate under different working conditions, realize the composite control method of multiple hydraulic hoist cylinders, and overcome the shortcomings of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 is a hydraulic system diagram of the present invention; Figure 2 It is an automatic control system for a hydraulic device of the present invention; Figure 3 The invention relates to a synchronous control system of a hydraulic device.

[0017] In the figure: oil cylinder 1; oil pump motor group 2; motor pump group 201; accumulator module 3; accumulator 301; electromagnetic overflow valve 4; first pressure sensor 5; first electromagnetic reversing valve 6; second pressure sensor 7; second electromagnetic reversing valve 8; electromagnetic speed control valve 9; manual speed control valve 10; third pressure sensor 11; fourth pressure sensor 12; balance valve 13; travel switch 14; displacement sensor 15; opening meter 16; flow sensor 17; main control system 300; main control unit 330; communication unit 331; time synchronization unit 332; alarm unit 333. DETAILED DESCRIPTION

[0018] Example 1 like Figure 1 As shown, an integrated hydraulic cylinder cluster synchronous control system includes a hydraulic transmission circuit and an electro-hydraulic control system, characterized in that: the hydraulic transmission circuit includes multiple groups of cylinders 1 connected to the rapid emergency gate and of equal number, at least two sets of oil pump motor groups 2 and accumulator modules 3, and the multiple groups of oil pump motor groups 2 are connected to the accumulator module 3 in parallel and connected to the multiple groups of cylinders 1 through transmission pipelines; The hydraulic transmission circuit also includes an electromagnetic overflow valve 4, a first electromagnetic reversing valve 6, a second electromagnetic reversing valve 8, an electromagnetic speed regulating valve 9, a manual speed regulating valve 10 and a balance valve 13. Two sets of parallel flow control units are provided on the transmission circuit of each oil cylinder 1 to control the speed of the oil cylinder 1; The electro-hydraulic control system includes a first pressure sensor 5 and a second pressure sensor 7 connected to the accumulator module 3, a third pressure sensor 11 and a fourth pressure sensor 12 connected to the oil cylinder 1, a travel switch 14, a displacement sensor 15, and an opening meter 16 connected to the gate.

[0019] This application uses Bosch Rexroth's A10 axial piston pump, which can provide variable or fixed displacement according to demand and is suitable for open and closed systems. The pressure sensor uses model MPS2101, and the electromagnetic relief valve 4 uses model Bosch Rexroth's DBW10, which is a pilot relief valve that can handle a larger flow rate and has a smaller pressure loss. It is widely used in large hydraulic systems. The electromagnetic reversing valve uses Bosch Rexroth's model 4WE10 four-way reversing valve, the electromagnetic speed control valve uses Bosch Rexroth's model MFS10 electromagnetic proportional speed control valve, the manual speed control valve uses Bosch Rexroth's model 2FR15 flow control valve for hydraulic systems, and the balancing valve uses Bosch Rexroth's model FD25 two-way balancing valve to control the pressure of its inlet and outlet oil circuits. In the preferred embodiment, the motor pump group 201 in each oil pump motor group 2 is connected to the electromagnetic overflow valve 4 for controlling the charging of the accumulator module 3 .

[0020] In the preferred embodiment, the multiple accumulators 301 in the accumulator module 3 are connected to the first pressure sensor 5 and the first electromagnetic reversing valve 6 through pipelines, and then connected in parallel with the oil pump motor unit 2 through a main pipe, and then connected to the multiple groups of cylinders 1 and their transmission circuits. A second pressure sensor 7 is also provided on the main pipe.

[0021] In the preferred embodiment, a second electromagnetic reversing valve 8 and an electromagnetic speed control valve 9 are connected in series to form a flow control unit of a group of cylinders 1. After the two groups of flow control units of cylinders 1 are connected in parallel, they are connected to the manual speed control valve 10 and the balance valve 13 in turn through pipelines and then connected to the cylinders 1, forming a set of cylinders 1 and their hydraulic transmission circuits.

[0022] In the preferred embodiment, the oil inlet of the second electromagnetic reversing valve 8 is connected to the accumulator module 3 or the oil pump motor unit 2, the oil return port is connected to the electromagnetic speed control valve 9, and the two working oil ports are respectively connected to the rod chamber and the rodless chamber of the cylinder 1.

[0023] In the preferred embodiment, a third pressure sensor 11 is provided between the working oil port on one side of the two second solenoid reversing valves 8 and the rod chamber, and a fourth pressure sensor 12 is provided between the working oil port on the other side and the rodless chamber. A flow sensor 17 is also provided on the throttle valve of the solenoid speed control valve 9 for measuring the actual amount of oil flowing through.

[0024] In the preferred embodiment, a manual speed regulating valve 10 is provided between the working oil port of the second electromagnetic reversing valve 8 and the rod chamber, and a balancing valve 13 is provided between the rod chamber and the rodless chamber of the oil cylinder 1 .

[0025] In the preferred embodiment, a travel switch 14 is provided on one side of the piston rod of the oil cylinder 1 for limiting the travel of the piston rod; The oil cylinder 1 or its piston rod is provided with a displacement sensor 15 for detecting the running speed of the oil cylinder 1; The plurality of rapid emergency gates are each provided with an opening meter 16 for detecting the opening and closing conditions of the gates.

[0026] According to the opening and closing requirements of the rapid emergency gate, the system can be divided into four common operating conditions: charging and opening of the accumulator module 3, closing of one rapid emergency gate, and emergency closing of four rapid emergency gates.

[0027] Condition 1: Accumulator module 3 is charged When the relay SP3 of the first pressure sensor 5 gives a low-pressure signal, a motor pump group 201 is turned on. After stable operation, the electromagnet DT1 of the electromagnetic overflow valve 4 is energized, and the system pressure is established. At this time, DT9 of the first electromagnetic reversing valve 6 is energized, and the accumulator 301 starts to charge. When the relay SP4 of the first pressure sensor 5 gives a high-pressure signal, the electromagnet DT9 of the first electromagnetic reversing valve 6 is de-energized, and the charging of the accumulator module 3 is completed.

[0028] Working condition 2: Door opening Start a group of oil pump motor groups 2 without load, delay about 10 seconds, the electromagnet DT1 of the electromagnetic overflow valve 4 of this group is energized, and the system pressure is established; press the door opening button, the electromagnet DT6 of the second electromagnetic reversing valve 8 is energized, the pressure oil enters the rod chamber of the cylinder 1, and the gate opens; during operation, if the gate opening speed exceeds the set speed, the electromagnet DT3 of the electromagnetic speed control valve 9 is energized, and the gate enters the slow opening condition.

[0029] Condition 3: One fast emergency gate closed At this time, the accumulator module 3 has been pressurized, and a group of oil pump motor groups 2 are started without load. After a delay of about 10 seconds, the electromagnet DT1 of any group of electromagnetic overflow valves 4 is energized, and the system pressure is established; press the door closing button, the electromagnet DT5 of the second electromagnetic reversing valve 8 and the electromagnet DT9 of the first electromagnetic reversing valve 6 are energized at the same time, and the oil pump motor group 2 and the accumulator module 3 simultaneously provide pressurized oil into the rodless chamber of the cylinder 1, and the gate is closed; during operation, if the gate closing speed exceeds the set speed, the electromagnet DT3 of the electromagnetic speed control valve 9 is energized, and the gate enters the slow closing condition.

[0030] Condition 4: Emergency closing of four rapid emergency gates At this time, the accumulator module 3 has been charged, and the oil pump motor group 2 is not started. The electromagnets DT5 of the two sets of second electromagnetic reversing valves 8 and the electromagnets DT9 of the first electromagnetic reversing valves 6 are energized at the same time. The pressure oil is provided by the accumulator module 3 and enters the rodless chambers of the four oil cylinders 1 at the same time, and the gates are closed quickly at the same time.

[0031] In working condition 4, the cylinder 1 of the present application is in a fast door closing condition with downward pressure. This condition is generally achieved by the differential function of the hydraulic system, that is, the oil in the rod chamber of the cylinder 1 returns to the rodless chamber when the door is closed. In order to achieve the fast door closing function in an emergency situation without electricity, the accumulator module 3 is used as a hydraulic power oil source to replace the oil pump motor in the present application. The UPS provides a DC power supply for the electromagnet and provides the oil required for the rodless chamber of the cylinder 1 when the door is closed, so as to achieve the effect of fast door closing of the system.

[0032] In the present application, in order to quickly adjust the speed of opening and closing the door in working conditions 2 and 3, the system is provided with an integrated electromagnetic speed regulating valve 9 on the oil return line of the hydraulic valve. The electromagnetic speed regulating valve 9 is in a full flow passing state under normal conditions. When the displacement sensor 15 of the oil cylinder 1 detects that the oil cylinder 1 is running too fast, a control signal is given. At this time, the electromagnet of the electromagnetic speed regulating valve 9 is energized and enters a throttling state. The flow rate is determined by the preset throttling valve adjustment size.

[0033] In working conditions 2 and 3, the main oil circuit of the present application uses two sets of second electromagnetic reversing valves 8 in parallel. In actual use, only one set is used. When any set of second electromagnetic reversing valves 8 fails or loses control, it can automatically switch to another set of second electromagnetic reversing valves 8 to control the system. The two sets of second electromagnetic reversing valves 8 are backups for each other and can be switched to each other. In the emergency condition of working condition 4, the two sets of second electromagnetic reversing valves 8 can be powered at the same time to meet the large flow requirements of the system. Under normal working conditions, the hoist cylinder 1 will rebound due to the force of the water head, causing the gate to not close tightly. For this reason, the hydraulic system will automatically start the oil pump motor unit 2 after the opening meter 16 gives a signal to close the gate, wasting energy. In this system, the accumulator module 3 is in a pressurized state for a long time. When a fast emergency gate cylinder 1 feedbacks that the gate is open, only the electromagnet DT5 of the second electromagnetic reversing valve 8 and the electromagnet DT9 of the first electromagnetic reversing valve 6 are energized, and the accumulator 301 can provide high-pressure oil to close the gate in place.

[0034] The hydraulic system of this project controls 4 rapid emergency gates at the same time. The speed of each rapid emergency gate cylinder 1 is controlled by multiple valves in multiple ways: the number of second electromagnetic reversing valves 8 opened, two groups of second electromagnetic reversing valves 8 open one group or open at the same time; the number of electromagnetic speed control valves 9 opened, that is, whether DT3 of two groups of electromagnetic speed control valves 7 are energized at the same time; the opening size of the manual speed control valve 10, the cylinder 1 position signal fed back by the opening meter 16, and the electromagnets of the second electromagnetic reversing valve 8, the electromagnetic speed control valve 7, and the electromagnetic speed control valve 9 are controlled to be energized, so as to realize the synchronous operation of multiple rapid emergency gate cylinders 1.

[0035] Example 2 Further illustrate with reference to Example 1, Figure 1~2 As shown, a main control system 300 is provided, and each group of oil cylinders 1 and its hydraulic transmission circuit is provided with a main control unit 330, and the main control unit 330 is electrically connected to the first pressure sensor 5, the second pressure sensor 7, the third pressure sensor 11, the fourth pressure sensor 12, the travel switch 14, the displacement sensor 15, the opening meter 16, and the flow sensor 17; The main control unit 330 is also electrically connected to the electromagnetic overflow valve 4, the first electromagnetic reversing valve 6, the second electromagnetic reversing valve 8, the electromagnetic speed regulating valve 9, the manual speed regulating valve 10, the balancing valve 13, the oil pump motor unit 2 and its feedback module. The main control system 300 is also provided with an alarm unit 333, and each main control unit 330 is connected to the alarm unit 333 through its internal communication module for multi-level alarm for different valve working conditions.

[0036] The main control unit 330 monitors the operating conditions of multiple rapid emergency gates in real time, and issues different levels of alarms when abnormal or dangerous conditions are detected so that operators can respond quickly to ensure timely response in the event of an emergency and take necessary measures to protect the safety of facilities and personnel.

[0037] By setting up various sensors for real-time information exchange, the key parameters of the gate and the hydraulic system of the gate hoist are tested: By electrically connecting with the feedback modules of each connected valve group, the working status of each valve group is obtained and the operation of the control valve is controlled; The stroke of the oil cylinder 1 is limited by the stroke switch 14 to prevent the piston rod of the oil cylinder 1 from exceeding the stroke due to abnormal opening and closing of the gate. The real-time running distance and speed of the oil cylinder 1 are obtained by the displacement sensor 15 to detect the degree of opening of the gate. The opening and closing degree of each valve is controlled to obtain different working states of the oil cylinder 1. The opening and closing state of the gate is monitored by the opening meter 16. The opening and closing state of the gate is compared and analyzed with the output of the oil cylinder 1 monitored by the displacement sensor 15 by the main control unit 330. After judging the error, each valve is controlled to adjust the working parameters to correct the opening and closing state of the gate to be close to the ideal working state. The actual flow rate of oil in the throttle valve of the electromagnetic speed control valve 9 is monitored by the flow sensor 17 to obtain the actual working data of the electromagnetic speed control valve 9. After comparing it with the flow rate required for the normal operation of the cylinder 1, the main control unit 330 adjusts the valve opening degree to correct the deviation. The main control unit 330 issues an alarm based on the data detected by each sensor: When the data of the first pressure sensor 5 and the second pressure sensor 7 are detected to exceed the normal charging pressure range, an alarm is issued to the staff, indicating that "the charging pressure of the accumulator 3 module is abnormal", and the sealing conditions of each accumulator 301 and the connecting pipelines should be checked in time: When the data of the third pressure sensor 11 and the fourth pressure sensor 12 exceed the normal oil pressure range, an alarm is issued to the staff, indicating that "the pressure difference in the oil cylinder 1 is abnormal", and the sealing condition of the oil cylinder 1, the pressure condition of the gate, and whether the valves are damaged or open normally should be checked in time to prevent the oil return line from being blocked; When it is detected that the piston rod of the oil cylinder 1 exceeds the limit stroke of the travel switch 14, or the displacement sensor 15 detects abnormal movement speed, an alarm is issued to the staff, indicating that "the gate opening and closing process is abnormal", and the gate pressure condition and the normal opening of each valve should be checked in time; When the flow sensor 17 detects that the actual flow rate of oil in the throttle valve of the electromagnetic speed control valve 9 is significantly different from the flow rate required for the normal operation of the cylinder 1, an alarm is issued to the staff to check the on-off status of each pump group.

[0038] Example 3 Further description is given in conjunction with Example 1 and Example 2. Figures 1 to 3 As shown, the main control unit 330 of the plurality of oil cylinders 1 and their hydraulic transmission circuits is electrically connected to one or more communication units 331, and is used to communicate with a host computer or a host network through the communication unit 331; The main control system 300 is also provided with a time synchronization unit 332, which is electrically connected to each main control unit 330 for realizing synchronous control; The time synchronization unit 332 is also electrically connected to the alarm unit 333 for issuing an alarm for the synchronization status.

[0039] In an emergency, multiple rapid emergency gates need to be closed synchronously, and the communication unit 331 communicates with the host computer or the host network; the host computer or the host network sends logical control instructions, and each main control unit 330 completes the specific control instructions. The communication unit 331 usually uses a remote communication module such as a 4G or 5G communication module to achieve good communication compatibility. According to the distance between each cylinder 1, a local area network can be formed through wired or WiFi, and each local area network is provided with a communication unit 331, which communicates with the host computer or the host network through a 4G or 5G communication module.

[0040] The time synchronization unit 332 is electrically connected to each main control unit 330 to achieve synchronization of the main control units 330. A common time source is established through the time synchronization unit 332 to ensure that all main control units 330 trigger operations on the same clock edge to achieve operation synchronization.

[0041] If each time synchronization unit 332 detects that the consistency rate of the opening and closing speeds of the four rapid emergency gates driven by each group of cylinders 1 is low, an alarm is issued through the alarm unit 333, and a request is made to the main control unit 330 to check the operating parameters of each pump group and each sensor to find the cause of the error.

[0042] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An integrated hydraulic cylinder cluster synchronization control system, characterized by: The invention comprises a hydraulic transmission circuit and an electro-hydraulic control system, characterized in that: the hydraulic transmission circuit comprises a plurality of groups of oil cylinders (1) connected to the rapid emergency gate and having an equal number, at least two sets of oil pump motor groups (2) and an accumulator module (3); the plurality of oil pump motor groups (2) and the accumulator module (3) are connected in parallel and then connected to the plurality of oil cylinders (1) through transmission pipelines; The hydraulic transmission circuit further comprises an electromagnetic overflow valve (4), a first electromagnetic reversing valve (6), a second electromagnetic reversing valve (8), an electromagnetic speed regulating valve (9), a manual speed regulating valve (10) and a balancing valve (13); each oil cylinder (1) transmission circuit is provided with two sets of parallel flow control units for controlling the speed of the oil cylinder (1); The electro-hydraulic control system comprises a first pressure sensor (5) and a second pressure sensor (7) connected to the accumulator module (3), a third pressure sensor (11) and a fourth pressure sensor (12) connected to the oil cylinder (1), a travel switch (14), a displacement sensor (16), and an opening meter (17) connected to the gate.

2. According to claim 1, the integrated hydraulic cylinder cluster synchronous control system is characterized by: The motor pump group (201) in each set of oil pump motor group (2) is connected to the electromagnetic overflow valve (4) for controlling the pressure charging of the accumulator module (3).

3. According to claim 1, the integrated hydraulic cylinder cluster synchronous control system is characterized by: The plurality of accumulators (301) in the accumulator module (3) are connected to a first pressure sensor (5) and a first electromagnetic reversing valve (6) through pipelines, and then connected in parallel to an oil pump motor unit (2) through a main pipe, and then connected to a plurality of oil cylinders (1) and their transmission circuits. A second pressure sensor (7) is also provided on the main pipe.

4. According to claim 1, the integrated hydraulic cylinder cluster synchronization control system is characterized by: A second electromagnetic reversing valve (8) and an electromagnetic speed regulating valve (9) are connected in series to form a flow control unit of a group of oil cylinders (1). After the two groups of oil cylinder (1) flow control units are connected in parallel, they are connected to the manual speed regulating valve (10) and the balance valve (13) in sequence through pipelines and then communicated with the oil cylinders (1), forming a set of oil cylinders (1) and their hydraulic transmission circuits.

5. The integrated hydraulic cylinder cluster synchronous control system according to claim 4 is characterized in that: The oil inlet of the second electromagnetic reversing valve (8) is connected to the accumulator module (3) or the oil pump motor unit (2), the oil return port is connected to the electromagnetic speed regulating valve (9), and the two working oil ports are respectively connected to the rod chamber and the rodless chamber of the oil cylinder (1).

6. The integrated hydraulic cylinder cluster synchronous control system according to claim 4 is characterized in that: A third pressure sensor (11) is provided between the working oil port on one side and the rod chamber of the two second electromagnetic reversing valves (8), and a fourth pressure sensor (12) is provided between the working oil port on the other side and the rodless chamber. A flow sensor (18) is also provided on the throttle valve of the electromagnetic speed regulating valve (9) for measuring the actual amount of oil flowing through.

7. The integrated hydraulic cylinder cluster synchronous control system according to claim 4 is characterized in that: A manual speed regulating valve (10) is also provided between the working oil port of the second electromagnetic reversing valve (8) and the rod chamber, and a balancing valve (13) is also provided between the rod chamber and the rodless chamber of the oil cylinder (1).

8. The integrated hydraulic cylinder cluster synchronous control system according to claim 1 is characterized in that: A travel switch (14) is provided on one side of the piston rod of the oil cylinder (1) for limiting the travel of the piston rod; The oil cylinder (1) or its piston rod is provided with a displacement sensor (15) for detecting the running speed of the oil cylinder (1); The plurality of rapid emergency gates are each provided with an opening meter (16) for detecting the opening and closing conditions of the gates.

9. The integrated hydraulic cylinder cluster synchronous control system according to claim 1 is characterized by: A main control system (300) is provided, each group of oil cylinders (1) and its hydraulic transmission circuit is provided with a main control unit (330), the main control unit (330) being electrically connected to a first pressure sensor (5), a second pressure sensor (7), a third pressure sensor (11), a fourth pressure sensor (12), a travel switch (14), a displacement sensor (15), an opening meter (16), and a flow sensor (17); The main control unit (330) is also electrically connected to the electromagnetic overflow valve (4), the first electromagnetic reversing valve (6), the second electromagnetic reversing valve (8), the electromagnetic speed regulating valve (9), the manual speed regulating valve (10), the balancing valve (13), the oil pump motor unit (2) and the feedback module thereof; The main control system (300) is further provided with an alarm unit (333), and each main control unit (330) is communicatively connected to the alarm unit (333) via its internal communication module, and is used to generate an alarm for different valve working conditions.

10. The integrated hydraulic cylinder cluster synchronous control system according to claim 1, characterized in that: The main control unit (330) of the plurality of oil cylinders (1) and their hydraulic transmission circuits is electrically connected to one or more communication units (331) and is used to communicate with a host computer or a host network via the communication unit (331); The main control system (300) is further provided with a time synchronization unit (332), the time synchronization unit (332) being electrically connected to each main control unit (330) for realizing synchronous control; The time synchronization unit (332) is also electrically connected to the alarm unit (333) and is used to issue an alarm for the synchronization status.

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