Double acting high tonnage hydraulic jack for sale is currently widely used in various pipeline construction, construction, highway and railway construction, power station construction, equipment lifting, and mechanical disassembly. It has a tensioning function. The center hole can be used for cables, steel bars, etc. to pass through. The center hole can be customized according to user requirements. If processing is required, cylinders with different specifications and strokes can be produced according to user requirements. Hydraulic pump stations and manual oil pumps are optional. This type of equipment is small in size, light in weight, compact in structure, simple to operate, ultra-high pressure, small flow, and can be equipped with a low-pressure pump to improve efficiency. On this basis, various hydraulic components can be added. Such as electromagnetic reversing valve, pressure relay, remote control switch, hydraulic lock, etc. Can be used at any pressure within the rated pressure.

What should we pay attention to when designing a double acting high tonnage 2000 tons hydraulic jack?

A jack is a simple lifting device with a small lifting height. It is available in both mechanical and hydraulic types. There are two types of mechanical jacks: rack type and screw type. Due to their small lifting capacity and laborious operation, they are generally only used for mechanical maintenance work and are not suitable for bridge repairs. Hydraulic jack, also known as hydraulic jack, is a jack that uses a plunger or hydraulic cylinder as a rigid lifting member. It has a compact structure, stable operation, and self-locking effect, so it is widely used. Its disadvantages are limited lifting height and slow lifting speed.

Double acting high tonnage hydraulic jack makes full use of Pascal's principle to realize force transmission and amplification, so that heavy objects can be lifted with a small force. In a hydraulic jack, in addition to its own components, it also needs a very important medium, that is, the working medium, also called hydraulic oil. The quality of hydraulic oil directly affects whether the jack can work normally. Therefore, hydraulic oil is required to have good performance. In a hydraulic jack, the functions that hydraulic oil should have are as follows:

1. Transmission, that is, transmitting the piston in the jack to the actuator.

2. Lubrication, lubrication of moving components such as pistons, check valves, oil return valve stems and actuators.

3. Absorb and take away the heat generated by the jack hydraulic device.

4. Anti-rust to prevent corrosion of the metal used in the hydraulic components in the hydraulic jack.

In addition, hydraulic oil also needs to have the following working performance requirements:

1. Compressibility. Small compressibility ensures transmission accuracy.

2. Viscosity-temperature characteristics. It must have a suitable viscosity and small change with temperature.

3. Lubricity. The oil film must have strong adsorption force on the material surface, and the oil film must have high anti-extrusion strength.

4. The oil cannot be changed due to heat, oxidation or hydrolysis and has a long service life.

5. Compatibility. Good compatibility with metals, seals, rubber hoses, paints, etc.

High tonnage hydraulic jack is widely used in power maintenance, bridge repair, heavy lifting, static pile pressing, foundation settlement, bridge and ship repair, especially in highway and railway construction, mechanical calibration, equipment disassembly, etc. Due to the wide range of hydraulic applications, the stroke range needs to be relatively wide.

What does the hydraulic transmission system in a double acting hydraulic jack consist of?

The hydraulic system mainly consists of five parts: power components (oil pumps), actuating components (cylinders), control components (various valves), auxiliary components and working medium. Power component (oil pump) Its function is to convert the mechanical energy of the liquid into hydraulic pressure energy using the prime mover; it is the power part of the hydraulic transmission. Actuator (cylinder) It converts the hydraulic energy of the liquid into mechanical energy. Among them, the cylinder performs linear motion and the motor performs rotational motion. Control components include pressure valves, flow valves, directional valves, etc. Their function is to continuously adjust the speed of the hydraulic motor as needed, and to regulate and control the pressure, flow and flow direction of the working fluid in the hydraulic system. In addition to the above three parts, other auxiliary components include pressure gauges, oil filters, energy storage devices, pipe fittings and fuel tanks, which are also very important. Working medium The working medium refers to the hydraulic oil or chemical fluid in various types of hydraulic transmission, which achieves energy conversion through oil pumps and hydraulic motors.

What should we pay attention to during the construction of big tonnage hydraulic jack oil pump?

Oil pumps and jacks should use working oil with a specified oil number, usually No. 10 or No. 20 mechanical oil. Other hydraulic oils with similar properties, such as transformer oil, can also be used. The oil poured into the fuel tank must be filtered. Commonly used ones should be filtered once a month, and the fuel tank should be cleaned regularly. The oil level in the tank is generally maintained at about 85%. If it is insufficient, it should be replenished in time. The replenished oil should be the same as the oil in the original pump. The oil temperature in the tank should generally be 10~40℃, and it is not suitable to operate at negative temperatures. Used under
The oil pipe should avoid bending under working pressure. The oil tank connecting the oil pump and the jack should be kept clean and sealed without screws to prevent sediment from entering. The exposed oil nozzles of the oil pump and the jack should be sealed with nuts to prevent dust and debris from entering the machine. After each use, the oil pump should be wiped clean and the oil dirt on the oil filter copper wire cloth should be cleaned. The oil pump should not be operated under overload. The pressure should be adjusted according to the rated oil pressure of the equipment. Any adjustment is strictly prohibited. The power supply must be grounded and the chassis must be grounded. Test operation can only be carried out after checking the insulation of the circuit. Before transporting the high-pressure oil pump, each oil circuit regulating valve should be loosened, and then the oil pump should be started. After the empty compound operation is normal, the oil return valve should be closed tightly, and the oil inlet valve stem should be gradually screwed to increase the load, and pay attention to the pressure gauge pointer. Is it normal? When the oil pump stops working, the oil return valve should be slowly loosened first. After the pressure gauge slowly returns to zero, the oil pipe joint nut of the jack can be removed. It is strictly prohibited to dismantle or replace oil pipes or pressure gauges under load.

What should I do if the 2000 tons high tonnage hydraulic jack does not pressurize?

Pressure is one of the two basic parameters of the hydraulic jack system, which to a large extent determines the performance of the hydraulic system. The performance of pressure regulating failure is as follows: when adjusting the pressure of the jack hydraulic system, ① the system pressure cannot be established at all, and there is no pressure at all; ② although the pressure can be adjusted up a little, it cannot be adjusted high; ③ the pressure cannot be adjusted down, and the pressure is always It is a phenomenon such as high pressure.

Self-checking method: ① Check whether the pump has no flow output or the output flow is insufficient. If the hydraulic pump rotates in the wrong direction, it can be solved through the relevant knowledge of the hydraulic pump. ②Check for faults in pressure regulating valves such as relief valves. For example, the overflow valve spool is stuck in the overflow position and the system overflows, and the unloading valve spool is stuck in the unloading position and the system is unloaded. The system pressure cannot increase. ③Check the direction control valve. The spool of the reversing valve is not reversing in place, causing the pressure oil chamber and the return oil chamber to collide. ④Check the actuator. The locking nut connecting the piston and piston rod of the hydraulic cylinder is loose, and the piston runs out from the piston rod, causing the two chambers of the hydraulic cylinder to communicate with each other.

We are a professional jack manufacturer and supplier with more than 20 years of rich manufacturing experience. We will provide excellent service and competitive price for you, we are expecting to become your long-term partner. A professional after-sales service team and a complete after-sales service system provides sufficient guarantee for you to use the high tonnage hydraulic jack to successfully complete the construction projects.