Hydraulic system of oil transfer arm

Abstract

The utility model discloses a hydraulic system of an oil transfer arm. The hydraulic system comprises an oil storage module, a power module, an execution module and an oil return module, the oil storage module is used for storing hydraulic oil; the power module is connected with the oil storage module and the execution module, conveys hydraulic oil to the execution module and is used for providing execution power; the execution module is used for controlling actions of an inner arm, an outer arm and a rotary joint of the oil transfer arm; the oil return module is connected with the execution module and the oil storage module and enables hydraulic oil discharged by the execution module to flow back to the oil storage module. Hydraulic control of the inner arm, the outer arm and the rotary joint of the oil transfer arm can be achieved, and the safety of the whole hydraulic system is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pressure, in particular to a hydraulic system of an oil delivery arm. Background Art

[0002] In the prior art, a transfer arm, also known as a marine transfer arm or marine liquid loading and unloading arm, is a specialized device installed on a dock to load and unload fluid materials between the dock and a tank vessel. The transfer arm consists of an inner arm, an outer arm, and a rotary joint. The rotary joint connects the inner and outer arms to enable the outer arm to rotate, allowing the transfer arm to load and unload materials. To hydraulically drive the transfer arm, a hydraulic system is required. Summary of the Invention

[0003] According to an embodiment of the present utility model, a hydraulic system of an oil delivery arm is provided, comprising: an oil storage module, a power module, an execution module and an oil return module;

[0004] The oil storage module is used to store hydraulic oil;

[0005] The power module is connected to the oil storage module and the execution module. The power module delivers hydraulic oil to the execution module to provide execution power.

[0006] The execution module is used to control the actions of the inner arm, outer arm and rotary joint of the oil transfer arm;

[0007] The oil return module is connected to the execution module and the oil storage module, and the oil return module returns the hydraulic oil discharged from the execution module to the oil storage module.

[0008] Furthermore, the power module includes: a motor pump unit, a manual pump and a filter;

[0009] The input end of the motor pump group and the input end of the manual pump are connected to the oil storage module;

[0010] The output end of the motor pump group is connected to the output end of the manual pump and is also connected to the input end of the filter;

[0011] The output of the filter is connected to the execution module;

[0012] The motor pump group and the hand pump pump hydraulic oil to the execution module;

[0013] The filter filters the hydraulic oil pumped by the motor pump unit and the hand pump.

[0014] Furthermore, the power module further comprises: a first solenoid valve, a speed regulating valve, a pressure transmitter and a relief valve;

[0015] The input end of the first solenoid valve, the pressure transmitter and the inlet of the relief valve are connected to the output end of the filter;

[0016] The pressure transmitter monitors the pressure changes of hydraulic oil in real time;

[0017] The outlet of the relief valve is connected to the oil return module, and the relief valve is used to control the system oil pressure;

[0018] The output end of the first solenoid valve is connected to the input end of the execution module and the speed regulating valve;

[0019] The output end of the speed control valve is connected to the execution module, and the speed control valve is used to adjust the flow rate of the hydraulic oil.

[0020] Furthermore, the motor pump unit comprises: an oil suction filter, a vane pump and a motor;

[0021] The oil suction filter is arranged in the oil storage module to filter the hydraulic oil in the oil storage module;

[0022] The vane pump is connected to the oil suction filter and the filter;

[0023] The motor is connected to the vane pump to drive the vane pump to pressurize and deliver hydraulic oil.

[0024] Furthermore, the execution module includes: three execution components;

[0025] The three execution components have the same structure;

[0026] The three execution components are connected to the power module and the oil return module respectively;

[0027] The three actuators are the inner arm actuator, the outer arm actuator and the rotation actuator. The inner arm actuator controls the extension and retraction of the inner arm, the outer arm actuator controls the extension and retraction of the outer arm, and the rotation actuator controls the rotation of the rotary joint.

[0028] Furthermore, the execution component includes: a cylinder and a second solenoid valve; the oil inlet of the second solenoid valve is connected to the power module, the oil return port of the second solenoid valve is connected to the oil return module, and the two working oil ports of the second solenoid valve are respectively connected to the rod cavity end and the rodless cavity end of the cylinder.

[0029] Furthermore, the oil storage module comprises: an oil tank, an accumulator and a third solenoid valve;

[0030] The oil tank is connected to the input end of the power module and the output end of the oil return module, and the oil tank stores hydraulic oil;

[0031] The accumulator stores backup hydraulic oil. The accumulator is connected to the input end of the execution module and the oil return module through the third solenoid valve. The accumulator is used to provide a backup oil source.

[0032] Furthermore, the oil return module includes: an oil return pipeline and a one-way valve;

[0033] One end of the oil return line is connected to the execution module, and the other end is connected to the oil storage module. The oil return line transports the hydraulic oil discharged from the execution module to the oil storage module;

[0034] The one-way valve is installed on the oil return line to limit the flow direction of the hydraulic oil.

[0035] Furthermore, it also includes: a fourth solenoid valve and an emergency disengagement cylinder; the oil inlet of the fourth solenoid valve is connected to the oil storage module, the oil return port of the fourth solenoid valve is connected to the oil return module, and the two working oil ports of the fourth solenoid valve are respectively connected to the rod cavity end and the rodless cavity end of the emergency disengagement cylinder, and the emergency disengagement cylinder controls the oil transfer arm to separate from the external hull.

[0036] Furthermore, it also includes: a fifth solenoid valve and a connecting cylinder; the oil inlet of the fifth solenoid valve is connected to the oil storage module, the oil return port of the fifth solenoid valve is connected to the oil return module, the two working oil ports of the fifth solenoid valve are respectively connected to the rod cavity end and the rodless cavity end of the connecting cylinder, and the connecting cylinder controls the connection between the refueling port of the oil delivery arm and the external refueling port.

[0037] According to the hydraulic system of the oil transfer arm of the embodiment of the utility model, the hydraulic control of the inner arm, the outer arm and the rotary joint of the oil transfer arm can be achieved, and the safety of the entire hydraulic system is high.

[0038] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the hydraulic system of the oil delivery arm according to an embodiment of the present utility model;

[0040] Figure 2 Schematic diagram of a power module of a hydraulic system of an oil delivery arm according to an embodiment of the present utility model;

[0041] Figure 3 Schematic diagram of an execution module of a hydraulic system of an oil delivery arm according to an embodiment of the present utility model;

[0042] Figure 4 Schematic diagram of a connecting cylinder of a hydraulic system of an oil delivery arm according to an embodiment of the present utility model;

[0043] Figure 5 Schematic diagram of the emergency disengagement cylinder of the hydraulic system of the oil delivery arm according to an embodiment of the utility model. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to further illustrate the present invention.

[0045] First, combine Figures 1 to 5The hydraulic system of the oil transfer arm according to the embodiment of the present invention is described, which is used to control the movement of the oil transfer arm and has a wide range of application scenarios.

[0046] like Figures 1 to 5 As shown, the hydraulic system of the oil transfer arm of the embodiment of the present utility model includes: an oil storage module, a power module, an execution module and an oil return module.

[0047] Specifically, if Figures 1 to 5 As shown, in this embodiment, the oil storage module is used to store hydraulic oil to ensure a stable supply of hydraulic oil; the power module is connected to the oil storage module and the execution module, and the power module delivers hydraulic oil to the execution module to provide a stable power source to ensure the sensitive and precise movement of the actuator; the execution module is used to control the movement of the inner arm, outer arm and rotary joint of the oil transfer arm; the oil return module is connected to the execution module and the oil storage module, and the oil return module returns the hydraulic oil discharged from the execution module to the oil storage module, thereby effectively recycling the hydraulic oil.

[0048] Specifically, if Figures 1 to 5 As shown, in this embodiment, the power module includes: a motor pump group, a manual pump 10 and a filter 31; the input end of the motor pump group and the input end of the manual pump 10 are connected to the oil storage module; the output end of the motor pump group and the output end of the manual pump 10 are connected to the input end of the filter 31; the output end of the filter 31 is connected to the execution module; the motor pump group and the manual pump 10 pump hydraulic oil to the execution module; the filter 31 filters the hydraulic oil pumped by the motor pump group and the manual pump 10, ensuring that the hydraulic oil pumped by the motor pump group and the manual pump 10 is fully filtered before entering the execution module to remove impurities and contaminants in the oil. The arrangement of the motor pump group and the manual pump 10 provides two power sources. When the motor pump group fails or the power is interrupted, the manual pump 10 can serve as a backup power source to ensure that the hydraulic system can continue to operate, greatly improving the reliability of the system; in this embodiment, the number of motor pump groups is a pair. When one pump group fails or requires maintenance, the other pump group can continue to work, ensuring the continuous operation of the hydraulic system.

[0049] Further, if Figures 1 to 5As shown, in this embodiment, the power module further includes: a first solenoid valve 18.1, a speed regulating valve 19, a pressure transmitter 14.1 and a relief valve 12; the input end of the first solenoid valve 18.1, the pressure transmitter 14.1 and the inlet of the relief valve 12 are connected to the output end of the filter 31; the pressure transmitter 14.1 monitors the pressure changes of the hydraulic oil in real time, so that the system can accurately control and adjust the pressure to ensure that the hydraulic system operates within the optimal pressure range; the outlet of the relief valve 12 is connected to the oil return module, and the relief valve 12 is used to control the system. Oil pressure, when the pressure is too high, the overflow valve 12 will open and discharge the excess hydraulic oil back to the oil return module to prevent damage caused by excessive system pressure and ensure the safe operation of the system; the output end of the first solenoid valve 18.1 is connected to the execution module and the input end of the speed control valve 19; the output end of the speed control valve 19 is connected to the execution module, and the speed control valve 19 is used to adjust the flow rate of the hydraulic oil; when the first solenoid valve 18.1 is not energized, the flow rate is inconvenient, and when the solenoid valve is energized, the flow rate is reduced, meeting the flow rate requirements of different working conditions and improving the flexibility and adaptability of the system.

[0050] Further, if Figures 1 to 5 As shown, in this embodiment, the motor pump assembly includes: oil suction filters 4.1, 4.2, vane pumps 5.1, 5.2 and motors 8.1, 8.2; the oil suction filters 4.1, 4.2 are arranged in the oil storage module to filter the hydraulic oil in the oil storage module, and can perform preliminary filtration before the hydraulic oil enters the vane pumps 5.1, 5.2 to remove impurities and contaminants in the hydraulic oil; the vane pumps 5.1, 5.2 are connected to the oil suction filters 4.1, 4.2 and the filter 31; the motors 8.1, 8.2 are connected to the vane pumps 5.1, 5.2 to drive the vane pumps 5.1, 5.2 to pressurize and deliver the hydraulic oil. The motors 8.1, 8.2 can adjust the output power according to system requirements to ensure that the hydraulic oil is delivered at an appropriate pressure and flow rate.

[0051] Specifically, if Figures 1 to 5As shown, in this embodiment, the actuator module includes: three actuator assemblies; the three actuator assemblies have the same structure, which is easy to manufacture, install and maintain; the three actuator assemblies are respectively connected to the power module and the oil return module; the three actuator assemblies are the inner arm actuator assembly, the outer arm actuator assembly and the rotary actuator assembly, the inner arm actuator assembly controls the extension and retraction of the inner arm, the outer arm actuator assembly controls the extension and retraction of the outer arm, and the rotary actuator assembly controls the rotation of the rotary joint. The actuator assemblies include: cylinders 1.1, 1.2, 1.3 and second solenoid valves 38.1, 38.2, 38.3; the oil inlets of the second solenoid valves 38.1, 38.2, 38.3 are connected to the power module, the oil return ports of the second solenoid valves 38.1, 38.2, 38.3 are connected to the oil return module, and the two working oil ports of the second solenoid valves 38.1, 38.2, 38.3 are respectively connected to the rod cavity end and the rodless cavity end of the cylinders 1.1, 1.2, 1.3. Second solenoid valves 38.1, 38.2, and 38.3 precisely control the rod and rodless ends of cylinders 1.1, 1.2, and 1.3 by controlling the flow of hydraulic oil, thereby enabling the extension and retraction of the inner and outer arms and the rotation of the rotary joint. In this embodiment, the actuator assembly further includes first throttle valves 45.1, 45.2, and 45.3, pressure relief valves 46.1, 46.2, and 46.3, and explosion-proof valves 47.1, 47.2, 47.3, and 47.4. First throttle valves 45.1, 45.2, and 45.3 are used for speed adjustment. Pressure relief valves 46.1, 46.2, and 46.3 prevent overpressure and improve safety. Explosion-proof valves 47.1, 47.2, 47.3, and 47.4 prevent the loss of control of cylinders 1.1, 1.2, and 1.3 due to an unexpected rupture of a key, thereby preventing the dangerous sudden drop of the inner and outer arms.

[0052] Specifically, if Figures 1 to 5 As shown, in this embodiment, the oil storage module includes: an oil tank 2, an accumulator 23 and a third solenoid valve 21; the oil tank 2 is connected to the input end of the power module and the output end of the oil return module, and the oil tank 2 stores hydraulic oil; the accumulator 23 stores spare hydraulic oil, and the accumulator 23 is connected to the input end of the execution module and the oil return module through the third solenoid valve 21. The accumulator 23 can store a certain amount of spare hydraulic oil, and provide an additional oil source when the system needs it, ensuring that the hydraulic system can operate stably under various working conditions. When the main oil source fails, the accumulator 23 can be used as an emergency oil supply source to ensure that the system will not stop running due to oil source interruption in a short time, thereby improving the safety and emergency handling capability of the system; the third solenoid valve 21 can control the hydraulic oil supply of the accumulator 23, so that the system can quickly switch to the backup oil source when needed.

[0053] Specifically, if Figures 1 to 5As shown, in this embodiment, the oil return module includes: an oil return line and one-way valves 17.3, 17.6, and 17.7; one end of the oil return line is connected to the execution module, and the other end is connected to the oil storage module. The oil return line transports the hydraulic oil discharged from the execution module to the oil storage module; the one-way valves 17.3, 17.6, and 17.7 are arranged on the oil return line to limit the flow direction of the hydraulic oil and prevent the hydraulic oil in the oil return line from flowing back.

[0054] Specifically, if Figures 1 to 5 As shown, in this embodiment, an emergency release device is also provided, comprising: a fourth solenoid valve 18.2 and an emergency release cylinder 1.4; the oil inlet of the fourth solenoid valve 18.2 is connected to the oil storage module, the oil return port of the fourth solenoid valve 18.2 is connected to the oil return module, and the two working oil ports of the fourth solenoid valve 18.2 are respectively connected to the rod chamber end and the rodless chamber end of the emergency release cylinder 1.4. The emergency release cylinder 1.4 controls the separation of the oil transfer arm from the external hull. The fourth solenoid valve 18.2 controls the emergency release function. When the valve is opened and energized, the oil transfer arm can be quickly separated from the hull. When the fourth solenoid valve 18.2 is not energized, the emergency release device is ensured to remain in the undetached state. A manual control valve 51 is also included, which can be used to manually control the emergency release device to improve system safety.

[0055] Specifically, if Figures 1 to 5 As shown, in this embodiment, a quick coupler is also provided, comprising a fifth solenoid valve 37 and a coupling cylinder 1.5. The oil inlet of the fifth solenoid valve 37 is connected to the oil storage module, and the oil return port of the fifth solenoid valve 37 is connected to the oil return module. The two working oil ports of the fifth solenoid valve 37 are respectively connected to the rod chamber end and the rodless chamber end of the coupling cylinder 1.5. The coupling cylinder 1.5 controls the connection between the refueling port of the oil transfer arm and the external refueling port. When the right side of the fifth solenoid valve 37 is energized, the coupling is achieved, and when the left side is energized, the coupling is disconnected. The speed of the coupling and disconnection is controlled by a second throttle valve.

[0056] Above, refer to Figures 1 to 5 The invention describes a hydraulic system of an oil transfer arm according to an embodiment of the invention, which can realize hydraulic control of the inner arm, outer arm and rotary joint of the oil transfer arm, and the safety of the entire hydraulic system is high.

[0057] It should be noted that, in this specification, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the elements.

[0058] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A hydraulic system for an oil transfer arm, characterized in that: Contains: oil storage module, power module, execution module and oil return module; The oil storage module is used to store hydraulic oil; The power module is connected to the oil storage module and the execution module, and the power module delivers the hydraulic oil to the execution module to provide execution power; The execution module is used to control the actions of the inner arm, outer arm and rotary joint of the oil delivery arm; The oil return module is connected to the execution module and the oil storage module, and the oil return module returns the hydraulic oil discharged from the execution module to the oil storage module.

2. The hydraulic system of the oil delivery arm according to claim 1, characterized in that: The power module includes: a motor pump group, a manual pump and a filter; The input end of the motor pump group and the input end of the manual pump are connected to the oil storage module; The output end of the motor pump group is connected to the output end of the manual pump and is connected to the input end of the filter; The output end of the filter is connected to the execution module; The motor pump group and the manual pump pump the hydraulic oil to the execution module; The filter filters the hydraulic oil pumped by the motor pump unit and the manual pump.

3. The hydraulic system of the oil delivery arm according to claim 2, characterized in that: The power module further comprises: a first solenoid valve, a speed regulating valve, a pressure transmitter and a relief valve; The input end of the first solenoid valve, the pressure transmitter and the inlet of the relief valve are connected to the output end of the filter; The pressure transmitter monitors the pressure changes of the hydraulic oil in real time; The outlet of the relief valve is connected to the oil return module, and the relief valve is used to control the system oil pressure; The output end of the first solenoid valve is connected to the execution module and the input end of the speed regulating valve; The output end of the speed regulating valve is connected to the execution module, and the speed regulating valve is used to adjust the flow rate of the hydraulic oil.

4. The hydraulic system of the oil delivery arm according to claim 2 or 3, characterized in that: The motor pump assembly comprises: an oil suction filter, a vane pump and a motor; The oil suction filter is arranged in the oil storage module to filter the hydraulic oil of the oil storage module; The vane pump is connected to the oil suction filter and the filter; The motor is connected to the vane pump to drive the vane pump to pressurize and deliver the hydraulic oil.

5. The hydraulic system of the oil delivery arm according to claim 1, characterized in that: The execution module includes: three execution components; The three execution components have the same structure; The three execution components are respectively connected to the power module and the oil return module; The three actuators are an inner arm actuator, an outer arm actuator and a rotation actuator. The inner arm actuator controls the extension and retraction of the inner arm, the outer arm actuator controls the extension and retraction of the outer arm, and the rotation actuator controls the rotation of the rotary joint.

6. The hydraulic system of the oil delivery arm according to claim 5, characterized in that: The actuator assembly includes: a cylinder and a second solenoid valve; the oil inlet of the second solenoid valve is connected to the power module, the oil return port of the second solenoid valve is connected to the oil return module, and the two working oil ports of the second solenoid valve are respectively connected to the rod cavity end and the rodless cavity end of the cylinder.

7. The hydraulic system of the oil delivery arm according to claim 1, characterized in that: The oil storage module includes: an oil tank, an accumulator and a third solenoid valve; The oil tank is connected to the input end of the power module and the output end of the oil return module, and the oil tank stores the hydraulic oil; The accumulator stores backup hydraulic oil. The accumulator is connected to the input end of the execution module and the oil return module through the third solenoid valve. The accumulator is used to provide a backup oil source.

8. The hydraulic system of the oil delivery arm according to claim 1, characterized in that: The oil return module includes: an oil return pipeline and a one-way valve; One end of the oil return pipeline is connected to the execution module, and the other end is connected to the oil storage module, and the oil return pipeline transports the hydraulic oil discharged from the execution module to the oil storage module; The one-way valve is arranged on the oil return pipeline to limit the flow direction of the hydraulic oil.

9. The hydraulic system of the oil delivery arm according to claim 1, characterized in that: It also includes: a fourth solenoid valve and an emergency disengagement cylinder; the oil inlet of the fourth solenoid valve is connected to the oil storage module, the oil return port of the fourth solenoid valve is connected to the oil return module, and the two working oil ports of the fourth solenoid valve are respectively connected to the rod cavity end and the rodless cavity end of the emergency disengagement cylinder, and the emergency disengagement cylinder controls the separation of the oil transfer arm from the external hull.

10. The hydraulic system of the oil delivery arm according to claim 1, characterized in that: It also includes: a fifth solenoid valve and a connecting cylinder; the oil inlet of the fifth solenoid valve is connected to the oil storage module, the oil return port of the fifth solenoid valve is connected to the oil return module, the two working oil ports of the fifth solenoid valve are respectively connected to the rod cavity end and the rodless cavity end of the connecting cylinder, and the connecting cylinder controls the connection between the refueling port of the oil delivery arm and the external refueling port.

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