阅读说明：本技术 一种大型船舶用安装平台液压控制系统 (Mounting platform hydraulic control system for large ship ) 是由 孟庆文 孙古津 程西送 于 2021-08-24 设计创作，主要内容包括：一种大型船舶用安装平台液压控制系统,包括两组液压泵,液压泵的高压液压油输出口经过第一溢流阀、第一单向阀与主比例换向阀组的P1口相连,第一液压泵的负载反馈口与主比例换向阀组的LS口相连,第一联比例阀的出口分别联接两组纵向平移液压缸,第二联比例阀的出口分别联接左侧的两组主顶升液压缸,第三联比例阀的出口分别联接右侧的两组主顶升液压缸,第四联比例阀的出口分别联接四组送进液压缸,第五联比例阀的出口分别联接两组纵倾液压缸；第六联比例阀的出口分别联接四组马达。该系统可以保证按照所需精确柔性控制液压缸伸出或缩回的速度和位置,从而满足重载设备在船舶外底部进行安装和位置调整,高设备的安装精度及工作效率。(A hydraulic control system of an installation platform for a large ship comprises two groups of hydraulic pumps, wherein high-pressure hydraulic oil output ports of the hydraulic pumps are connected with a port P1 of a main proportional reversing valve group through a first overflow valve and a first one-way valve, a load feedback port of the first hydraulic pump is connected with a port LS of the main proportional reversing valve group, outlets of first-connected proportional valves are respectively connected with two groups of longitudinal translation hydraulic cylinders, outlets of second-connected proportional valves are respectively connected with two groups of main jacking hydraulic cylinders on the left side, outlets of third-connected proportional valves are respectively connected with two groups of main jacking hydraulic cylinders on the right side, outlets of fourth-connected proportional valves are respectively connected with four groups of feeding hydraulic cylinders, and outlets of fifth-connected proportional valves are respectively connected with two groups of longitudinal inclination hydraulic cylinders; and the outlets of the sixth group of proportional valves are respectively connected with four groups of motors. The system can ensure the extending or retracting speed and position of the hydraulic cylinder to be flexibly controlled according to the required accuracy, thereby meeting the requirements of the installation and position adjustment of heavy-load equipment at the outer bottom of a ship and improving the installation accuracy and the working efficiency of the equipment.)

1. A hydraulic control system of a mounting platform for a large ship is characterized by comprising a main hydraulic pump and a standby hydraulic pump, a high-pressure hydraulic oil output port of the hydraulic pump is connected with a P1 port of the main proportional reversing valve group through a first overflow valve and a first check valve, a load feedback port of the first hydraulic pump is connected with an LS port of the main proportional reversing valve group, the outlet of the first proportional valve of the main proportional reversing valve group is respectively connected with two groups of longitudinal translation hydraulic cylinders, the outlet of the second proportional valve of the proportional reversing valve group is respectively connected with two groups of main jacking hydraulic cylinders on the left side, the outlet of the third proportional valve of the proportional reversing valve group is respectively connected with the two groups of main jacking hydraulic cylinders on the right side, the outlets of the fourth-group proportional valves of the proportional reversing valve group are respectively connected with four groups of feeding hydraulic cylinders, and the outlets of the fifth-group proportional valves of the proportional reversing valve group are respectively connected with two groups of trim hydraulic cylinders; and the outlets of the sixth proportional valves of the proportional reversing valve group are respectively connected with four groups of motors.

2. The hydraulic control system of a large-scale marine installation platform, according to claim 1, characterized in that the outlet of the first proportional valve is connected with two sets of longitudinal translation hydraulic cylinders through a shunt motor, the outlet of the second proportional valve is connected with two sets of main jacking hydraulic cylinders on the left side through a shunt motor, the outlet of the third proportional valve is connected with two sets of main jacking hydraulic cylinders on the right side through a shunt motor, the outlet of the fourth proportional valve is connected with four sets of feeding hydraulic cylinders through a shunt motor, and the outlet of the fifth proportional valve is connected with two sets of pitch hydraulic cylinders through a shunt motor.

3. The hydraulic control system of a mounting platform for a large ship according to claim 1, wherein a balance valve is installed at an oil port of the longitudinal translation hydraulic cylinder, a balance valve is installed at an oil port of the main jacking hydraulic cylinder, balance valves are installed at oil ports of the main jacking hydraulic cylinders on the right side and the left side, a balance valve is installed at an oil port of the feeding hydraulic cylinder, a balance valve is installed at an oil port of the trim hydraulic cylinder, and balance valves are installed at two oil ports of the motor.

4. The hydraulic control system of a large marine installation platform of claim 1, further comprising an accumulator connected to the main proportional reversing valve bank.

5. The mounting platform hydraulic control system for large vessels according to claim 1, wherein the hydraulic pump to be used is a constant pressure variable pump.

Technical Field

The invention belongs to the technical field of ship control systems, and particularly relates to a hydraulic control system of an installation platform for a large ship.

Background

With the rapid development of the ship industry, large ships are more and more, the used propulsion devices are larger and larger, and a dock crane cannot reach the bottom of the ship to hoist the propulsion devices, so that the installation means is lagged behind, consumes long time, and the safety cannot be guaranteed by adopting methods such as a flat trolley or a chain block.

Most of the propulsion devices of large ships exceed two hundred tons, and the auxiliary platform on the platform weighs about one hundred tons, so the load capacity of the installation platform is more than three hundred tons. Particularly, front-back and left-right movement and generation of a back tilt angle and a left-right tilt angle are required. Meanwhile, the precision of the ship body position of the propelling device is not more than 2mm, so that the requirement on hydraulic control of the platform is high. A hydraulic motor is required to drive the wheel hub, so that the platform can move back and forth; a hydraulic cylinder in the platform is transversely moved to complete the left-right adjustment of the auxiliary platform; a lifting hydraulic cylinder of the main platform finishes lifting the propelling device to approach the mounting port of the ship body; the back rake hydraulic cylinder completes the back angle change of the side platform in the platform; the lifting hydraulic cylinder is lifted on one side to finish the change of the left and right inclination angles.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide the hydraulic control system of the mounting platform for the large-scale ship, which can ensure that the extending or retracting speed and position of the hydraulic cylinder can be accurately and flexibly controlled according to the requirement, so that the mounting and position adjustment of heavy-load equipment at the outer bottom of the ship can be met, and the mounting precision and the working efficiency of the equipment can be improved.

The invention provides a hydraulic control system of an installation platform for a large ship, which comprises two groups of hydraulic pumps, wherein a high-pressure hydraulic oil output port of each hydraulic pump is connected with a port P1 of a main proportional reversing valve group through a first overflow valve and a first one-way valve; and the outlets of the sixth proportional valves of the proportional reversing valve group are respectively connected with four groups of motors.

As a further technical scheme of the invention, an outlet of a first linkage proportional valve is connected with two groups of longitudinal translation hydraulic cylinders through a flow dividing motor, an outlet of a second linkage proportional valve is connected with two groups of main jacking hydraulic cylinders on the left side through the flow dividing motor, an outlet of a third linkage proportional valve is connected with two groups of main jacking hydraulic cylinders on the right side through the flow dividing motor, an outlet of a fourth linkage proportional valve is respectively connected with four groups of feeding hydraulic cylinders through the flow dividing motor, and an outlet of a fifth linkage proportional valve is connected with two groups of trim hydraulic cylinders through the flow dividing motor.

Furthermore, a balance valve is installed at an oil port of the longitudinal translation hydraulic cylinder, a balance valve is installed at an oil port of the main jacking hydraulic cylinder, balance valves are installed at oil ports of the main jacking hydraulic cylinders on the right side and the left side, a balance valve is installed at an oil port of the feeding hydraulic cylinder, a balance valve is installed at an oil port of the longitudinal tilting hydraulic cylinder, and balance valves are installed at two oil ports of the motor.

Furthermore, the energy accumulator is connected with the main proportional reversing valve group.

The invention has the advantages that 1, the hydraulic and electric control technology is adopted, the position of the piston of the hydraulic cylinder is detected and then fed back to the proportional reversing valve, and the movement of the hydraulic cylinder is controlled by flow; 2. the hydraulic system is controlled by a balance valve to ensure that the hydraulic cylinder stops at the correct position; 3. the accumulator can keep the system pressure stable under the condition of stopping the pump; 4. the shunt motor ensures the average distribution flow of the hydraulic cylinders controlled by each pair of proportional valves, so that the movement speeds of the hydraulic cylinders are consistent.

Drawings

Fig. 1 is a hydraulic schematic of the present system.

Detailed Description

Referring to fig. 1, the present embodiment provides a hydraulic control system for a large-scale ship mounting platform, including a hydraulic pump 1 and a backup hydraulic pump 2, wherein a high-pressure hydraulic oil output port of the hydraulic pump 1 passes through a first overflow valve, the first check valve is connected with a P1 port of the main proportional reversing valve group 3, a load feedback port of the first hydraulic pump is connected with an LS port of the main proportional reversing valve group, outlets of first-link proportional valves of the main proportional reversing valve group 3 are respectively connected with two groups of longitudinal translation hydraulic cylinders 4, outlets of second-link proportional valves of the proportional reversing valve group 3 are respectively connected with two groups of main jacking hydraulic cylinders 5 on the left side, outlets of third-link proportional valves of the proportional reversing valve group 3 are respectively connected with two groups of main jacking hydraulic cylinders 6 on the right side, outlets of fourth-link proportional valves of the proportional reversing valve group 3 are respectively connected with four groups of feeding hydraulic cylinders 7, and outlets of fifth-link proportional valves of the proportional reversing valve group 3 are respectively connected with two groups of longitudinal inclination hydraulic cylinders 8; the outlets of the sixth proportional valves of the proportional reversing valve group 3 are respectively connected with four groups of motors 9.

The outlet of the first linkage proportional valve is connected with two sets of longitudinal translation hydraulic cylinders 4 through a shunt motor, the outlet of the second linkage proportional valve is connected with two sets of main jacking hydraulic cylinders 5 on the left side through the shunt motor, the outlet of the third linkage proportional valve is connected with two sets of main jacking hydraulic cylinders 6 on the right side through the shunt motor, the outlet of the fourth linkage proportional valve is connected with four sets of feeding hydraulic cylinders 7 through the shunt motor, and the outlet of the fifth linkage proportional valve is connected with two sets of trim hydraulic cylinders 8 through the shunt motor.

The oil port of the longitudinal translation hydraulic cylinder 4 is provided with a balance valve, the oil port of the main jacking hydraulic cylinder 6 is provided with a balance valve, the oil ports of the right and left main jacking hydraulic cylinders are provided with balance valves, the oil port of the feeding hydraulic cylinder 7 is provided with a balance valve, the oil port of the longitudinal tilting hydraulic cylinder 8 is provided with a balance valve, so that the short-time pressure maintaining and buffering of the hydraulic cylinders are completed, and the two oil ports of the motor 9 are provided with balance valves, so that the buffering of the motor 9 is completed.

The energy accumulator is connected with the main proportional reversing valve group.

The spare hydraulic pump 2 is a constant pressure variable pump.

Each hydraulic cylinder or motor controlled in a combined mode should work independently, and the hydraulic cylinders or motors cannot work simultaneously when not necessary; because the hydraulic cylinders are provided with the position sensors, the working position of the hydraulic cylinders and the running speed of the hydraulic cylinders under corresponding flow can be timely and accurately obtained, and meanwhile, the proportional reversing valves can well control the flow input into each group of hydraulic cylinders, so that the whole platform can be ensured to stably move equipment such as a propeller and the like to be installed to an accurate position in a short time. The energy accumulator is arranged in the whole hydraulic system, so that the phenomenon that the oil liquid in the lower cavity slides down due to leakage during the working of the hydraulic cylinder can be well prevented, and the danger of the whole platform under the load action is avoided.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.