Safety detection technical scheme by using pressure sensor

Abstract

The invention discloses a safety detection technical scheme by using a pressure sensor. The safety detection technical scheme by using the pressure sensor is characterized by comprising a cylindricalvalve sleeve, a screw rod, a piston and a compression spring are arranged in the valve sleeve, a boss higher than a piston body is arranged on the piston, one end of the boss is sleeved with the compression spring, the compression spring sleeves the screw rod, the other end of the screw rod abuts against a pressure sensor, the other end of the pressure sensor abuts against a contact switch of an induction indicating lamp, the induction indicating lamp is installed at one end of the valve sleeve through an insulating rubber plug, the other end of the piston is sleeved with a shaft sleeve in a sliding mode, a first sealing ring is arranged between the piston and the shaft sleeve, and a second sealing ring is arranged between the shaft sleeve and the valve sleeve. The safety detection technical scheme by using the pressure sensor has the advantages of being simple and compact in structure, time-saving and labor-saving in assembly and disassembly, convenient to machine, good in sealing effect, accurate in measurement and long in service life.

Description

technical field [0001] The invention relates to an underground security inspection technology, and in particular provides a technical solution for safety inspection using a pressure sensor. Background technique [0002] Now, mining hydraulic support equipment is an important equipment to ensure the safety of mine working face. Due to the complex geological structure underground, the natural change of mine pressure and the leakage of hydraulic medium, the working resistance of hydraulic support equipment is unbalanced. It is the main root cause of accidents such as roof loosening, column collapse and overpressure collapse. However, the currently widely used hydraulic support products do not have the function of safety detection and alarm for the working resistance, and accidents such as the collapse of the top plate of the inverted column or the collapse of the broken column due to overload often occur due to too small or too large working resistance. Loss of pressure or ove...

AI Technical Summary

Problems solved by technology

However, the currently widely used hydraulic support products do not have the function of safety detection and alarm for the working resistance, and accidents such as the collapse of the top plate of the inverted column or the collapse of the broken column due to overload often occur due to too small or too large working resistance. Loss of pressure or overpressure of the support equipment will cause the pillar to collapse due to loss of support, or the top beam will collapse due to the uneven distribution of force on multiple monomers or supports, which can easily cause personal injury or death accident and property damage

In order to prevent the occurrence of accidents, underground safety inspectors now adopt the method of frequent inspections of the supporting force of the hydraulic equipment, and check the working resistance of the pillars one by one by shaking or beating and other very backward means, which not only cannot be found in a timely and effective manner. At the same time, a lot of time and energy are wasted, and it is impossible to know whether the current working status of the hydraulic support equipment is normal, so it is impossible to rule out potential safety hazards

The hydraulic pressure of the mining hydraulic prop is relatively large, and the force on the piston is also relatively large. The large stress needs to be measured with a large spring. In addition, the existing piston adopts a uniform cylindrical shape with a uniform upper and lower sides. The piston must also be used with large springs. The required large-stress springs occupy a large volume, the cost of testing equipment is high, and transportation is inconvenient.