Analysis of operating system of hydraulic hydraulic nut!Pneumatic band saw sale

source:Industry News release time:2021-09-09 Article author:Rosit Popular:Air band saw

　　Analysis of the operation control system (system) of the nut: It uses ultra-high pressure oil to generate a thrust on the shaft and a tension on the shaft sleeve (explanation: mutual traction when the object is under tension), so that the shaft and the shaft sleeve are uniformly stressed ( The connection of jūn yún) is in common. The hydraulic wrench transmits power to the working head through the high-pressure oil pipe and the hydraulic pump, which drives the working head to tighten or loosen the nut. The hydraulic pump can be driven by electricity or compressed air. The working head of the hydraulic wrench is mainly composed of three parts, the frame (also called the shell), the oil cylinder and the transmission parts.

Analysis of operating system of hydraulic hydraulic nut!Pneumatic band saw sale(pic1)

The output force of the oil cylinder, the piston rod of the oil cylinder and the transmission part form a motion pair. The distance from the center of the oil cylinder to the center of the transmission component is the hydraulic wrench amplification arm. The oil cylinder output multiplied by the arm is the theoretical output torque of the hydraulic wrench. The actual output torque is smaller than the theoretical output torque. Hydraulic (hydraulic) nut is an advanced bolt (composition: head and screw) assembly method, especially suitable for tight space and heavy load vibration mechanical fastening. The working principle of hydraulic (hydraulic) nut is to use hydraulic The (hydraulic) cylinder directly exerts an external force on the bolt (composition: head and screw), so that the applied bolt is elongated in its elastic deformation zone. After the bolt is elongated, the lock ring on the hydraulic nut is tightened. , So the bolt will be locked in the elongated position (position) by the lock ring. The hydraulic cylinder is located at the position of the central axis of the bolt, and is used to axially stretch the bolt to achieve the required stretching amount of the bolt. And it is this amount of tension of the bolt that determines the clamping force required for bolt tightening. When the hydraulic nut is pressurized, the bolt is stretched, and at the same time the hydraulic nut is in close contact with the joint surface. Thus, the axial deformation of the bolt is locked, that is, the remaining bolt load is locked in the nut. Many connecting surfaces are equipped with gaskets. The gasket only works when the connecting surface is compressed, so it is especially important that the connecting surface always remains clamped. The load applied to the bolt is proportional to the oil pressure in the hydraulic cylinder. This design can accurately retain the effective load. Since the load is directly applied to the bolt, and all the forces are used for bolt elongation, the space required for load generation can be minimized.