CN2649478Y

CN2649478Y - Rapid cable-laying device

Info

Publication number: CN2649478Y
Application number: CN 03270386
Authority: CN
Inventors: 曹卫
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2003-09-27
Filing date: 2003-09-27
Publication date: 2004-10-20
Anticipated expiration: 2013-09-27

Abstract

A quick cable laying device consists of an oil pump, a three-position four-way valve, an oil motor, a back pressure balance valve, two check valves, an oil return tank, double-pressure overflow valves, an electromagnetic valve and a fluid infusion check valve that are connected by oil pipes. The double-pressure overflow valves consist of high pressure overflow valves and a low pressure overflow valve, the high pressure overflow valves are arranged at both ends of the oil motor in parallel, and both ends of the low pressure overflow valves are separately connected with the oil return tank and the pipeline between the high pressure overflow valves and the oil motor. The electromagnetic valve is arranged between the low pressure overflow valve and the oil tank, and the fluid infusion check valve is arranged between the oil motor inlet and the oil return tank. When the tug retreats, the cable draws the oil motor to rotate, and the oil pressure in the oil motor outlet increases. When the pressure exceeds the set value, the pressure oil is released by the electromagnetic valve and the external overflow valve. The oil motor rotates, the cable is laid longer, and the cable laying speed increases with the increase of the boat speed. At that time, oil is infused to the oil motor by the oil infusion check valve to prevent the oil motor from being damaged because of oil shortage. When the tug stops, the pressure of pressure oil reduces to the set value, the oil motor stops rotating and the cable laying stops.

Description

A kind of quick cable laying device

Technical field

The utility model relates to tugboat and Other Engineering traction boats and ships, particularly the quick cable laying device in the towing operation.

Background technology

By need use towing cable when mooring with other towing operations, tugboat presses close to will carry out after bull wheel is fastened towing cable the cable laying operation to tugboat at the assistance bull wheel, because the effect of the more effective performance tugboat of the towing cable of certain length ability.The cable laying device that present tugboat generally adopts comprises the oil pump 10, three-position four-way valve 20, by pass valve 30, back-pressure balance valve 40, two

check valves

50,51, oil motor 60 and the oil sump tank 70 that are connected by oil pipe as shown in Figure 1; Wherein, described oil pump 10 links to each other with oil sump tank 70 by three-position four-way valve 20; Oil motor 60 links to each other with cable reel, and the two ends of oil motor 60 link to each other with three-position four-way valve 20 respectively; By pass valve 30 is arranged in parallel in oil motor 10 two ends; Two

check valves

50,51 are arranged at respectively on the loop that reaches 70 of three-position four-way valve 20 and oil sump tanks between oil motor 60 outlet and the three-position four-way valve 20; Described back-pressure balance valve 40 is arranged in parallel in the loop of 20 of the outlet of check valve 50 oil motors 60 and three-position four-way valves.Make oil motor 60 rotations by handling control handle, because oil motor 60 links to each other with cable reel, rotating drum makes hawser lax, and tugboat backs away in loose cable process.Since the speed that oil motor 60 rotative speeds retreat than tugboat slowly many, therefore this method can not reach quick cable laying, if the tugboat astern speed is too fast, the anti-oil motor that draws of tugboat hawser, make oil motor 60 play the oil pump effect, can cause oil motor 60 outlet pipe oil pressure P1 sharply to rise, arrive to a certain degree and can cause damage oil motor 60 and other hydraulic valve pieces.

Summary of the invention

The purpose of this utility model is to design a kind of quick cable laying device, can make tugboat cable releasing speed and tugboat astern speed synchronous, and payout process is without any need for hydraulic efficiency power unit.

For achieving the above object, technical solution of the present utility model is,

A kind of quick cable laying device comprises the oil pump, three-position four-way valve, oil motor, back-pressure balance valve, two check valves and the oil sump tank that are connected by oil pipe; Wherein, described oil pump links to each other with oil sump tank by three-position four-way valve; The two ends of oil motor link to each other with three-position four-way valve respectively; Two check valves are arranged at respectively on the loop that reaches between oil motor outlet and the three-position four-way valve between three-position four-way valve and oil sump tank; Described back-pressure balance valve is arranged in parallel the loop between outlet of check valve oil motor and three-position four-way valve; It is characterized in that, also comprise two pressurized overflow valves, electromagnetic valve, fluid infusion check valve; Wherein, the two pressurized overflow valves of this balance are made up of the high and low pressure by pass valve, and high-pressure overflow valve is arranged in parallel in the oil motor two ends, and low pressure relief valve one end is connected in pipeline between high-pressure overflow valve and oil motor, and the other end links to each other with oil sump tank; Described electromagnetic valve is arranged on the loop between low pressure relief valve and oil sump tank; Described fluid infusion check valve is arranged on the loop between oil motor import and oil sump tank.

As further improvement of the utility model, the utility model also is provided with an outside by pass valve, and this outside by pass valve is arranged on the loop of electromagnetic valve and oil sump tank.

Hydraulic oil motor is connected with the towing cable reel, and the low voltage value of two pressurized overflow valves is set the setting pressure that is same as outside by pass valve, as setting initial pressure 30Kg/cm ², can prevent the rotation of hawser deadweight causing oil motor.Behind the good cable of tugboat band, hull retreats, and hawser is tightened the rotation of pulling oil motor, makes the oil pressure P in the oil motor hydraulic tubing ₁Rise, work as pressure P ₁Greater than setting pressure 30Kg/cm ²The time, the pressure oil in the oil pipe discharges by electromagnetic valve and outside by pass valve.Oil motor rotates, and hawser lengthens, and cable releasing speed is to increase along with the increase of ship's speed.Automatic liquid supply check valve repairing in oil motor induction pipe this moment prevents the oil pump inner oil shortage and damages that when tugboat stopped, oil pipe internal pressure oil pressure descended, and when being lower than setting pressure, oil motor stops operating, and hawser also stops to lengthen.

Advantage of the present utility model is that cable laying mode of the present utility model dallies by oil motor and realizes, changes in the past by the mode of power rotation cable laying, and the power rotation was subjected to the restriction of speed, and rotated freely the just random variation with the variation of ship's speed.

Description of drawings

Fig. 1 is the structural representation of existing cable laying device.

Fig. 2 is a structural representation of the present utility model.

The specific embodiment

As shown in Figure 2, quick cable laying device of the present utility model comprises the oil pump 1 that is connected by oil pipe, three-position four-way valve 2, oil motor 3, back-pressure balance valve 4, two check valves 5,5 ', oil sump tank 6, the two pressurized overflow valves 7 of balance, electromagnetic valve 8, fluid infusion check valve 9 and outside by pass valve 10; Wherein, described oil pump 1 links to each other with oil sump tank 6 by three-position four-way valve 2; The two ends of oil motor 3 link to each other with three-position four-way valve 2 respectively, and oil motor 3 links to each other with cable reel; Two check valves 5,5 ' are arranged at respectively on the loop that reaches 6 of three-position four-way valve 2 and oil sump tanks between oil motor 3 outlet and the three-position four-way valve 2; It is the loop of 2 of oil motor 3 outlet and three-position four-way valves that described back-pressure balance valve 4 is arranged in parallel in check valve 5; Described pair of pressurized overflow valve 7 is made up of high and low pressure by

pass valve

71,72; High-pressure overflow valve 71 is arranged in parallel in oil motor 2 two ends, and low pressure relief valve 72 1 ends are connected in high-

pressure overflow valve

71 and 3 pipelines of oil motor, and the other end links to each other with oil sump tank 6; Described electromagnetic valve 8 is arranged on the loop of 6 of low pressure relief valve 72 and oil sump tanks; Described fluid infusion check valve 9 is arranged on the loop of 6 of oil motor 3 imports and oil sump tanks; Outside by pass valve 10 is arranged on the loop of electromagnetic valve 8 and oil sump tank 6.

See also Fig. 2 again, the A direction is a cable laying operation fluid flow direction among the figure, and the B direction is a take-up operation fluid flow direction.Low pressure relief valve 72 in two pressurized overflow valves 7 is set at 30kg/cm with outside by pass valve 10 initial pressures ², can prevent that the hawser deadweight from making oil motor 3 rotations; High-pressure overflow valve 71 pressure are set at 200kg/cm ², then can guarantee the safe handling in the normal towing operation.

When tugboat retreats fast, electromagnetic valve 8 is shown in an open position, two pressurized overflow valve 7 mesolow by pass valves 72 are connected with outside by pass valve 10.Towing cable pulling oil motor 3 makes oil motor 3 outlet B lateral pressure P ₁Rise, work as P ₁Greater than initial pressure 30kg/cm ²The time, the oil of oil motor 3 outlet B sides just can pass through electromagnetic valve 8 and outside by pass valve 10 by the low pressure relief valve 72 of two pressurized overflow valves 7 again and unload and put to oil sump tank 6, and the oil of oil motor 3 import A sides then can in time compensate by fluid infusion check valve 9.Oil motor 3 can freely rotate, and hawser also just lengthens along with moving of tugboat.And tugboat oil motor 3 outlet B lateral pressure P when stopping ₁Reduce rapidly, then oil motor 3 stops operating, and cuts off normally towing operation of 8 of electromagnetic valves this moment.

Claims

1. a quick cable laying device comprises the oil pump, three-position four-way valve, oil motor, back-pressure balance valve, check valve and the oil sump tank that are connected by oil pipe;

Oil pump links to each other with oil sump tank by three-position four-way valve;

Oil motor, its two ends link to each other with three-position four-way valve respectively;

Two check valves are arranged at respectively on the loop that reaches between oil motor outlet and the three-position four-way valve between three-position four-way valve and oil sump tank;

The back-pressure balance valve is arranged in parallel the loop between outlet of check valve oil motor and three-position four-way valve; It is characterized in that, also comprise,

Two pressurized overflow valves are made up of the high and low pressure by pass valve, and wherein, high-pressure overflow valve is arranged in parallel in the oil motor two ends, and low pressure relief valve one end is connected in pipeline between high-pressure overflow valve and oil motor, and the other end links to each other with oil sump tank;

Electromagnetic valve is arranged on the loop between low pressure relief valve and oil sump tank;

The fluid infusion check valve is arranged on the loop between oil motor import and oil sump tank.

2. quick cable laying device as claimed in claim 1 is characterized in that, also is provided with an outside by pass valve, and this outside by pass valve is arranged on the loop of electromagnetic valve and oil sump tank.