The structure of the hydraulic station

The structural form of the hydraulic station is mainly distinguished by the structural form, installation location and cooling method of the pump device.

Structure installation edit this paragraph

According to the mechanism form and installation position of the pump device, it can be divided into:

1) Top-mounted vertical: The pump device is installed vertically on the tank cover, mainly used for quantitative pump systems.

2) Top horizontal type: The pump device is installed horizontally on the fuel tank cover, mainly used in variable pump systems to facilitate flow adjustment.

3) Side-mounted type: the pump device is installed horizontally next to the fuel tank alone, and can be equipped with a side-mounted pump. It is mainly used for systems with a fuel tank capacity of 250 liters and a motor power of more than 7.5 kW.

cooling method

1) Natural cooling: Cooling by heat exchange between the fuel tank itself and the air is usually used in systems with a fuel tank capacity of less than 250 liters.

2) Forced cooling: Cooler forced cooling is usually used in systems with a tank capacity greater than 250 liters. The main technical parameters of the hydraulic station are the effective oil storage capacity of the oil tank and the motor power. The fuel tank capacity has 18 specifications (unit: liter/L) (25) 40, 63, 100, 160, 250, 400, 630, 800, 1000, 1250, 1600, 2000, 2500, (3200) 4000, 5000, 6000 This series of hydraulic stations can do the following tasks according to user requirements and working conditions: 1. Manifold blocks can be configured according to the system, or without manifold blocks; 2. Coolers, heaters, and accumulators can be set; Also can be without electric control device.

Fuel tank form edit this paragraph

1) Ordinary steel plate: the box body is welded with 5MM-6MM steel plate, and the panel is made of 10-12MM steel plate. If there are too many holes, it can be thickened or reinforced appropriately.

2) Stainless steel plate: The box body is made of 304 stainless steel plate with a thickness of 2-3MM, the panel is made of 304 stainless steel plate with a thickness of 3-5MM, and the load-bearing part is reinforced.

3) The internal anti-rust treatment of ordinary steel fuel tanks is difficult to achieve. Rust entering the oil circulation system will cause many failures. The all-stainless steel designed fuel tank solves this industry problem.

Structural form edit this paragraph

1) Piston type

Single rod hydraulic cylinders have a piston rod at only one end. As shown, it is a single piston hydraulic cylinder. The inlet and outlet AB ports at both ends can be filled with pressure oil or return oil to realize two-way movement, so it is called double-acting cylinder.

2) plunger type

①The plunger hydraulic cylinder is a single-acting hydraulic cylinder, which can only move in one direction by hydraulic pressure, and the return stroke of the plunger depends on other external forces or its own weight;

②The plunger is only supported by the cylinder liner and does not contact the cylinder liner. The cylinder liner is easy to process and is suitable for long-stroke hydraulic cylinders;

3. When working, the plunger is always under pressure, so it must have sufficient rigidity;

④The plunger is often heavy, and it is easy to sag due to its own weight when it is placed horizontally, causing unilateral wear of the seal and guide, so it is more beneficial to use it vertically.

3) telescopic

Telescopic hydraulic cylinders have two-stage or multi-stage piston telescopic hydraulic cylinders. The order of piston extension in the telescopic hydraulic cylinder is from large to small, while the order of no-load retraction is generally from small to large. Telescopic cylinders can achieve long strokes, but when retracted, they are shorter and more compact. This type of hydraulic cylinder is commonly used in construction machinery and agricultural machinery.

4) Swing type

The swing hydraulic cylinder is an actuator that outputs torque and realizes reciprocating motion, also known as a swing hydraulic motor. Available in single-edged and double-edged forms. The stator block is fixed to the cylinder, while the vanes and rotor are connected together. According to the direction of oil inlet, the vane will drive the rotor to swing back and forth.

Secondary braking edit this paragraph

TY1S (B792S) B157, TE130 are used for 2JK, 2JK/A, 2JK/e type single rope double drum series hoists.

TY1D (B792D) B159, TE131 are used for JK, JK/A, JK/e type single rope single drum series hoist and JKM－C, JKMD－C, JKM－A, JKMD－A, JKM－E, JKMD－ e-well tower and floor-mounted multi-rope hoists.

Functional parts edit this paragraph

The hydraulic station consists of a pump device, a manifold or a valve combination, a fuel tank, and an electrical box. The functions of each component are as follows:

Pump device - equipped with a motor and an oil pump, is the power source of the hydraulic station and converts mechanical energy into electrical energy of hydraulic oil.

Manifold - composed of hydraulic valves and channel bodies. It directs hydraulic oil, pressure, flow regulation.

Valve assembly - it is a flat valve installed on the vertical plate, connected to the back pipe of the flat plate, and its function is the same as that of the integrated block.

Oil tank——It is a semi-closed container welded by steel plate, and equipped with oil filter, air filter, etc., used for oil storage, oil cooling and filtration.

Electrical Box - Comes in two forms: a terminal board with external leads; one with a full set of control equipment.

Components edit this paragraph

⑴Electric motor, gear pump—provide driving force for the hydraulic system.

2 Electromagnetic reversing valve - control the flow direction of hydraulic oil and change the direction of movement of the cylinder.

3. Electromagnetic overflow valve——to prevent overpressure of the entire hydraulic system, which is equivalent to a safety valve to protect the safety of the oil pump and oil circuit system and keep the pressure of the hydraulic system constant.

4. Pressure reducing valve——By adjusting the pressure reducing valve, the requirements of different working mechanisms for different working pressures can be met, so that the pressure of the secondary oil circuit is lower than that of the primary oil circuit.

5. Speed regulating valve - throttling to adjust the oil circuit, which can change the working speed of the hydraulic cylinder of the actuator.

6 Hydraulic Oil Filters - There are two oil filters in the hydraulic station. One is installed on the oil suction port of the gear pump to avoid sucking impurities such as particles in the hydraulic oil in the oil tank. The other is installed on the hydraulic oil delivery pipeline of the system to remove impurities in the hydraulic oil, and at the same time remove colloids, asphaltene, carbonized particles, etc. produced by the chemical changes of the hydraulic oil itself. Thereby preventing the spool from being stuck and the occurrence of damping hole blockage and other faults. The pipeline system is equipped with a differential pressure alarm device. When the filter element is clogged, a signal will be sent. At this time, the filter element should be cleaned or replaced.

⑺Pressure gauge - used to display the working pressure of the hydraulic station, so that the operator can control the oil pressure.

——The air filter is installed on the fuel tank, which has three functions: one is to prevent pollutants in the air from entering the fuel tank; the other is to play a role in ventilation to avoid the phenomenon of air inhalation in the oil pump; third, it also acts as hydraulic oil supply port.

⑼Oil level gauge—installed on the side of the oil tank to display the liquid level of hydraulic oil.

⑽ Thermometer - Some oil tanks are equipped with a thermometer to display the temperature of the hydraulic oil.

⑾Connecting pipelines——to transmit hydraulic driving force, steel pipes are mostly used, and pressure-resistant rubber hoses are also used.

Main parameters edit this paragraph

Maximum working oil pressure = 6.3MPa Maximum flow: = 9L/min

The main oil pressure value during auxiliary braking: the first stage is adjustable between 0~4MPa and 4MPa

Working oil temperature: 15~60°C

Fuel tank storage capacity: 500L

Auxiliary braking delay time: 110s

The maximum allowable input current of the electro-hydraulic pressure regulator: 250mA

Hydraulic oil grade: No. 22 turbine oil.

Instructions for useEdit this paragraph

1. If abnormal phenomena such as pipeline oil leakage are found during work, stop the machine immediately for maintenance.

2. In order to prolong the service life of the hydraulic oil, the oil temperature should be lower than 65°C; check the quality of the hydraulic oil every three months, and replace it every six months to one year according to the quality of the hydraulic oil.

3. It is necessary to observe the liquid level of the oil level gauge of the fuel tank in time, and the hydraulic oil that meets the requirements shall be replenished in time to prevent the oil pump from being sucked.

4. Regularly clean or replace the oil filter.

5. Keep the working environment of the hydraulic station clean.