Hydraulic prop refers to a single retractable prop that uses liquid pressure to generate working resistance and achieves lifting and unloading. Hydraulic props are mainly divided into suspension type, double telescopic suspension type, DN internal injection type and FRP hydraulic prop. Today I will take a detailed look at the four different types of single hydraulic props.
Suspension single hydraulic props
1. Suspension type single hydraulic props
Suspension type single hydraulic props are a type of external injection type single hydraulic props, but have a distinct advantage over external injection type single hydraulic props. This is the DWX type single hydraulic prop. The principle of plug suspension technology, the suspension force reaches four-fifths of the working resistance, and the force on the column is only one-fifth. The DWX hydraulic props three-purpose valve is set on the handle body. The movable column is raised and raised, and the operation is convenient, stable and reliable.
Double telescopic suspension monolithic hydraulic props
2.Double telescopic suspension monolithic hydraulic props
Double telescopic suspension monolithic hydraulic props are a new generation of single surface support products developed by China University of Mining and Technology. They are supporting equipment for GAO-level mechanized general mining working faces and comprehensive mining. End support equipment for working face. It is suitable for roof support of coal mining face, head roof support of fully mechanized mining face, and advanced support for roadway tunneling. Suspension type single hydraulic prop is a type of external injection type single hydraulic prop, but it has a distinct advantage over external injection type single hydraulic prop. It is also a DWX type single hydraulic prop adopts the principle of plunger suspension technology, and has levitation force. Reaching four-fifths of the working resistance, the column's force is only one-fifth. The DWX hydraulic prop three-purpose valve is set on the handle body. During the injection, the three-purpose valve does not rise with the rise of the movable pillar of the pillar. Easy to operate, stable and reliable.
DN injection type single hydraulic props
3.DN internal injection type single hydraulic props
Single hydraulic props are generally divided into external injection type single hydraulic props, internal injection type single hydraulic props, suspension type single hydraulic props, and friction props. The internal injection type single hydraulic prop has its own pump and the same. When it is supported, it can quickly rise the column by shaking with a hand crank. The working fluid is not discharged when the column is lowered, which can better protect the working environment. It is convenient to use and flexible to manage. , Simple equipment. At present, the main use is a cylinder diameter of 90mm, from the 0.6-3.15m, there are 12 specifications of the single-injection type hydraulic prop. The general designation model is DN18-250 / 80, D is the single pillar, N is the internal injection type, 18 is the maximum height of the pillar is 1800mm, 250 is the working resistance of the pillar is 250kn, 80 is the cylinder diameter of the pillar is 80mm.
FRP single hydraulic prop
4. FRP single hydraulic prop
The FRP single hydraulic prop fills the three-way valve connected to the single hydraulic prop through the hydraulic station, and the single hydraulic prop starts to rise to the required height. The sealing effect completes the support; if it is lowered, the three-way valve unloading valve is opened, and the hydraulic prop starts to descend to complete the work.
