Cable constant tension hydraulic control circuit for towing winch
A technology of towing winch and control loop, applied in the direction of winch, spring mechanism, etc., can solve the problems of ships falling off the seabed, catastrophic loss, ship damage, etc.
Active Publication Date: 2015-12-16
WUXI HAIHE EQUIP TECH CO LTD
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AI Technical Summary
Problems solved by technology
Although the towing winch can be used to tow the ship, there is no cable tension control device on this towing winch, so the tension of the cable cannot be controlled
Because there is no cable tension control device, when the sea conditions change and the ship moves rapidly, tension will be generated on the cable, which will cause the cable to break, damage the ship, and even take the ship off the seabed, causing catastrophe loss
Method used
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Embodiment Construction
[0009] Such as figure 1 As shown, the cable constant tension hydraulic control circuit for towing winches of the present invention includes a hydraulic motor 4 coaxially connected with the winch roll, a first reversing valve 1, a pilot valve 6, a second reversing valve 5, a balance valve 2, a pilot Relief valve 3 and hydraulic pump station, wherein a second one-way valve 8 is connected in parallel between the two oil ports of the balance valve 2, and the A port of the first reversing valve 1 passes through the balance valve 2 and the A port of the hydraulic motor 4. The B port of the first reversing valve 1 is directly connected with the B port of the hydraulic motor 4 . The pilot relief valve 3 is located between the A port and the B port of the hydraulic motor 4 . There are four oil ports on the pilot relief valve 3, wherein, the first oil port communicates with the A port of the hydraulic motor 4, and the second oil port communicates with the T port of the hydraulic pump s...
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The invention relates to a towing-winch hydraulic control circuit for controlling constant tension of cables. The towing-winch hydraulic control circuit is characterized in that the towing-winch hydraulic control circuit comprises a hydraulic motor, a first reversing valve, a pilot valve, a second reversing vale, a balance valve, a pilot and overflow valve and a hydraulic pump unit; a port A of the first reversing valve is connected with a port A of the hydraulic motor through the balance valve; a port B of the first reversing valve is connected with a port B of the hydraulic motor. One oil port of the pilot and overflow valve is communicated with the port A of the hydraulic motor, and the other oil port of the pilot and overflow valve is communicated with a port T of the hydraulic pump unit after being connected with an electromagnet. A check valve is arranged between the port T of the hydraulic pump unit and the port B of the hydraulic motor. The other oil port of the pilot and overflow valve is communicated with an oil tank through the second reversing valve and the pilot valve. By the towing-winch hydraulic control circuit for controlling the constant tension of the cables, catastrophic losses caused by cable breakage, damage to ships and falling of the ships into the seabed can be avoided; the towing-winch hydraulic control circuit is applicable to control on tension of the cables between the towing winches and towed ships.
Description
technical field [0001] The invention relates to a hydraulic control device. Specifically, it is a hydraulic control circuit used to control the tension of the cable between the towing winch and the towed ship. Background technique [0002] It is known in the shipbuilding and application fields that large ships are equipped with towing winches so that some special ships can be towed. Although the towing of the ship can be realized by utilizing the towing winch, there is no cable tension control device on this towing winch, so the tension of the cable cannot be controlled. Because there is no cable tension control device, when the sea conditions change and the ship moves rapidly, tension will be generated on the cable, which will cause the cable to break, damage the ship, and even take the ship off the seabed, causing catastrophe loss. Contents of the invention [0003] The problem to be solved by the present invention is to provide a constant tension hydraulic control ci...
Claims
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IPC IPC(8): B66D1/50
Inventor 吴敬华刘健蒋梅玲高燕
Owner WUXI HAIHE EQUIP TECH CO LTD