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Hydraulic winch

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  • Hydraulic winch

Product description of hydraulic winch:

Hydraulic winches are exquisite and durable, and are widely used in material lifting or flat towing of marine engineering, construction, water conservancy engineering, forestry, mines, docks, etc.

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Hydraulic winch product details

Introduction of hydraulic winch

Hydraulic winches are exquisite and durable, and are widely used in material lifting or flat towing of marine engineering, construction, water conservancy engineering, forestry, mines, docks, etc.

Classification of hydraulic winches

The winches can be divided into four types: manual winches, electric winches, pneumatic winches, and hydraulic winches according to their different methods of use. At present, the domestic marine hydraulic winch has a maximum of 350T and the equipment's own weight reaches 150T.

According to the roll form, it is divided into single roll and double roll.

According to the roll distribution form, it is divided into parallel double rolls and front and rear double rolls.

The main technical indicators of hydraulic winches are rated load, support load, rope speed, rope capacity, etc.

A winch is a light and small lifting equipment (see hoisting machinery) that is wound with a wire rope or chain around a drum to lift or tow heavy objects (also known as a hoist). The winch can be used alone or as a component in machinery such as lifting, road building, and mine hoisting. It is widely used due to its simple operation, large amount of rope, and easy displacement. The winch is also known as a hoist. This product has high versatility, compact structure, small size, light weight, heavy lifting, and convenient use and transfer. It is widely used in materials lifting or leveling of construction, water conservancy engineering, forestry, mining, docks, etc., and can also be used for modern electrical control Supporting equipment for automatic operation line.

The winch is divided into three categories according to power: manual, electric and hydraulic.

A stopper (ratchet and pawl) is installed on the transmission mechanism of the handle of the manual winch to keep the weight in the required position. Manual winches for assembling or lifting heavy objects shall also be provided with safety handles and brakes. Manual winches are generally used in places with small lifting capacity, poor installation conditions or no power supply.

Electric winches are widely used in places with heavy work and large traction. The motor of the single drum electric winch (pictured) drives the drum through the reducer, and a brake is installed between the motor and the input shaft of the reducer. In order to meet the needs of lifting, traction and turning operations, there are also winches with double and multiple reel devices. Generally, winches with a rated load below 10T can be designed as electric winches.

Hydraulic winches are mainly winches with large rated load. Generally, winches above 10T to 5000T are designed as hydraulic winches. The winch can be divided into:

Marine winches: Marine winches can be further divided into drag winches, mooring winches, anchor winches, traction winches and so on.

Engineering winch: It is mainly used in engineering, mainly with hoisting and lifting functions.

Mine winch: It is divided into lifting winch, dispatch winch, drilling winch, return column winch, rake mine winch, return column winch and so on.

Cable winch: Mainly used for laying cables.

How hydraulic transmission works

The oil is used as the working medium, and the movement is transmitted by the change of the sealed volume, and the power is transmitted by the pressure inside the oil.

1. Power part-converts the mechanical energy of the prime mover into the pressure energy (hydraulic energy) of the oil, such as a hydraulic pump.

2. Execution part-The oil pressure energy input by the hydraulic pump is converted into mechanical energy that drives the working mechanism. For example: hydraulic cylinder, hydraulic motor.

3. Control part-used to control and adjust the pressure, flow and flow direction of the oil, such as: pressure control valve, flow control valve and directional control valve.

4. Auxiliary part-connects the first three parts together to form a system, which plays the role of oil storage, filtration, measurement and sealing. For example: pipes and fittings, fuel tanks, filters, accumulators, seals and control instruments.

The pressure applied at any point on a certain volume of liquid can be transmitted equally in all directions. This means that when using multiple hydraulic cylinders, each hydraulic cylinder will be pulled or pushed at its own speed, and these speeds depend on The pressure required to move the load.

With the same bearing capacity range of the hydraulic cylinder, the hydraulic cylinder carrying the minimum load will move first, and the hydraulic cylinder carrying the maximum load will move last.

In order to make the hydraulic cylinders move synchronously so that the load is lifted at the same speed at any point, it is necessary to use a control valve or a synchronous lift system element in the system.

(1) The working principle of the hydraulic transmission is shown in the schematic diagram of the hydraulic transmission of the grinder table. The hydraulic pump 3 is driven by a motor, sucks oil from the oil tank 1, and then transfers the oil with pressure energy to the pipeline. The oil passes through The throttle valve 4 and the pipeline flow to the reversing valve 6, and the spool of the reversing valve 6 has different working positions (there are three working positions in the figure), so the path conditions are different. When the spool is in the middle position, the valve port P. A, B. T is not interconnected. The oil path to the hydraulic cylinder is blocked, and the hydraulic cylinder is not supplied with pressure oil, so the table stops. If the valve core is pushed to the right (right end working position), then the valve ports P and A, B and T are connected. The pressure oil flows into the reversing valve 6 through the P port, and flows into the left cavity of the hydraulic cylinder 8 through the A port. The piston 9 is driven by the pressure oil in the left cavity of the hydraulic cylinder to move the table 10 to the right; Port b of the reversing valve 6 flows into the reversing valve 6 and flows back to the fuel tank 1 through the oil return port T. If the spool of the reversing valve 6 is pushed to the left (left end working position), the piston drives the table to move to the left Therefore, if the working position of the reversing valve 6 is different, the path of the pressure oil can be continuously changed, and the hydraulic cylinder can be constantly reversed to achieve the reciprocating motion required by the worktable.

According to different processing requirements, the moving speed of the worktable can be adjusted through the throttle valve 4, and the flow rate through the throttle valve is adjusted by changing the size of the opening of the throttle valve to control the movement speed of the worktable.

When the table moves, due to different working conditions, the resistance to be overcome is different. The different resistances are all overcome by the pressure energy output by the hydraulic pump. The pressure of the system can be adjusted by the relief valve 5. When the oil pressure in the system rises to a point higher than the set pressure of the relief valve, the steel ball on the relief valve is ejected, and the oil is discharged back to the fuel tank through the relief valve. At this time, the oil pressure does not rise any more and maintains a constant value.

In order to maintain the cleanness of the oil, a filter is provided to remove impurities and impurities from the oil to make the system work normally.

In short, the working principle of hydraulic transmission is to use the pressure energy of the liquid to transmit power; the actuator is used to convert the pressure energy of the liquid into mechanical energy to drive the moving parts. The hydraulic pressure system works, it is necessary to control and adjust the oil pressure, flow and direction to meet the requirements of the working parts in force, speed and direction.

(2) Composition of hydraulic system A complete hydraulic system is mainly composed of the following five parts;

1) The power unit supplies the pressure of the hydraulic system and converts the mechanical energy output by the motor into the pressure energy of the oil, thereby promoting the work of the entire hydraulic system. As shown in the figure, the hydraulic pump 3 is a power unit, which sucks oil from the fuel tank 1 and then sends it to the system.

2) Actuating element; it includes a hydraulic cylinder and a hydraulic motor to convert the pressure energy of the liquid into mechanical energy to drive the movement of the working part; 8 in the figure is a hydraulic cylinder that is driven by the pressure oil to drive the grinding machine table to make a straight line motion.

3) The control and regulating device includes various valves, such as pressure valve, flow valve and directional valve. It is used to control the hydraulic pressure, flow (flow rate), and the direction of the liquid flow in the hydraulic system to ensure that the actuator completes the expected working movement. In the figure, 5 is a relief valve, which is used to control the pressure of the system; 4 is a throttle valve, which is used to reduce the flow rate into the hydraulic cylinder, so as to control the speed of the table; 6 is a directional valve, which is used to change the pressure oil The path of the hydraulic cylinder is reversed to realize the reciprocating motion of the table.

4) Auxiliary devices refer to various pipe joints and oil pipes. Fuel tanks, converters and pressure gauges. They play a supporting role in connection, oil storage, filtration, storage of pressure energy and measurement of oil pressure to ensure the reliability of the hydraulic system. Work steadily and permanently. In the figure, 2 is a mesh filter. It plays the role of filtering oil; 1) It is an oil tank, which is used to store oil and dissipate heat.

5) Working medium refers to the oil in the hydraulic system that bears pressure and transmits pressure.

Physical drawing of hydraulic winch products

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Hydraulic winch product customization

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Product reviews

Manager Tian

Phone: 137 **** 9986

Comment: The use effect is particularly good, which greatly improves the efficiency, and the discounts given by the old customers are not low, continue to cooperate in the future!

Shenhua Machinery Customer Service: Thank you very much for your evaluation. All employees of Shandong Shenhua Machinery Manufacturing Co., Ltd. will continue to adhere to the development philosophy of "credibility is the quality of life and survive" and adhere to the customer-centric and win-win business philosophy for customers. New and old customer service at home and abroad!

Manager Bai

Phone: 156 **** 6251

Comments: The goods have arrived, the logistics are fast, and the salesman service is very attentive.

Shenhua Machinery Customer Service: Thank you very much for your evaluation. All employees of Shandong Shenhua Machinery Manufacturing Co., Ltd. will continue to adhere to the development philosophy of "credibility is the quality of life and survive" and adhere to the customer-centric and win-win business philosophy for customers. New and old customer service at home and abroad!

Manager Ni

Phone: 178 **** 6251

Comment: The staff member who bought last time thinks it works well, so I bought it again

Shenhua Machinery Customer Service: Thank you very much for your evaluation. All employees of Shandong Shenhua Machinery Manufacturing Co., Ltd. will continue to adhere to the development philosophy of "credibility is the quality of life and survive" and adhere to the customer-centric and win-win business philosophy for customers. New and old customer service at home and abroad!

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