Hydraulic torque pump is the power unit of a hydraulic wrench. Hydraulic tensioner pump is the power unit of a bolt tensioner. It is an energy conversion device that converts mechanical energy into fluid pressure energy, and is an energy device that provides pressure oil to the hydraulic transmission system. It is driven by the engine (internal combustion engine) or electric motor, sucks in the oil from the hydraulic oil tank, forms the pressure oil and discharges it, and sends it to the actuator. Hydraulic torque pump is the power source of hydraulic torque wrench or bolt tensioner.
The working principle of a hydraulic pump is that movement changes the pump cavity, thereby compressing the fluid and making the fluid have pressure energy. The necessary condition is that the pump cavity has a sealed volume change.
Hydraulic torque/tensioner machine is a kind of hydraulic component that provides pressurized liquid for hydraulic transmission. It is a kind of pump.
It converts the mechanical energy of power machines (such as electric motors and internal combustion engines) into pressure energy of liquids.
Its cam is driven by a motor to rotate. When the cam pushes the plunger upwards, the seal volume formed by the plunger and the cylinder body is reduced, and the oil is squeezed out of the seal volume and discharged to the place where it is needed through the one-way valve.
When the cam rotates to the lower part of the curve, the spring forces the plunger down to form a certain degree of vacuum, and the oil in the oil tank enters the sealed volume under the action of atmospheric pressure.
The cam causes the plunger to rise and fall continuously, the sealing volume periodically decreases and increases, and the pump continuously sucks and discharges oil.