The energy of the ultra-thin hydraulic jack mainly comes from the high-pressure working fluid, and the de-pressure working fluid is supplied by the hydraulic pump. Hydraulic pumps can be divided into gear pumps, vane pumps and plunger pumps according to their structure. Due to the low pressure of gear pumps and vane pumps, they are not suitable for pipe jacking construction.
Ultra-thin jacks are very suitable for applications where closing height and maximum stroke are the primary factors. The best working capacity, closing height, stroke length, spring return design, are widely used in maintenance, lifting operations, welding positioning of structural parts, assembly , Flange separation and other places.
Axial plug pumps are rarely used in pipe jacking construction. The working principle is to use the plunger to reciprocate remotely in the cylinder to cause the volume of the closed container to change, and to continuously suck and press the oil. The reciprocating movement of the plunger is realized by a flat or spatial crank-connecting rod mechanism.
The performance requirements of th hydraulic jack mp vary depending on the place of use. The above indicators are for the hydraulic pump used with the main pressure jack and installed in the pit on the jacking pipe. As for the hydraulic pump equipped with the calibration jack, the total flow is small. The hydraulic pump used in the small relay room requires a small volume to facilitate installation.
Hydraulic jacks motors and hydraulic jack are used for energy conversion devices in hydraulic systems. The jack is a linear reciprocating transducer, and the hydraulic motor is a rotary radiator. Their main function is to convert the pressure energy of high-pressure liquids into mechanical energy.
In order to better adapt to the production characteristics and needs of various industries, one or two parts and multiple accessories are added to one product to expand the technical use of other tools, so as to improve the utilization rate and work efficiency of hydraulic jacks. The handle of the hydraulic jack is equipped with thyristor components for two-speed, four-speed and even stepless speed regulation.
It also developed a line jump that allows the tool to be overloaded for a short time according to the characteristics of the thyristor, and the output power and torque are increased in this short time to facilitate processing. The other is the use of a diode relay to change the impact frequency of the electric shear. . In terms of electric motors, the use of reciprocating linear motors for reciprocating engineers and motors with dual excitation windings is being tested to increase output power. In addition, electronic counters have been used in the design, testing and production of hydraulic jacks.