Coal Mine Roof Separation Instrument

LBY-3 Roof Separation Instrument

The roof separation instrument is a device used to monitor the displacement generated when roof rock layers separate. It is mainly suitable for roadway roofs supported by bolts and anchor cables, as well as working faces where roof displacement needs to be measured. This instrument features high sensitivity and intuitive display, significantly reducing visual errors. It provides scientific basis for coal mine engineers and inspection personnel to determine the length and tensile strength of bolts, and to understand the rationality and economy of the bolts and anchor cables used.

The roof separation indicator reflects the values of multiple fixed devices in the roof borehole, which change with rock layer movements, onto a reading device installed on the roof surface via measuring steel cables. The roof separation instrument offers more comprehensive product technical services for mining operations. The Jiufang brand roof separation instrument is waterproof and highly trusted by coal mines.
Technical characteristics of the roof separation instrument:
①Measurement method: Reflective color display; ②Number of measurement points: 2; ③Range: 200 mm; ④Reading accuracy: 1 mm; ⑤Installation borehole diameter: 27-42 mm.

Taian Jiufang Mining Equipment Co., Ltd. produces the following products:

Single Prop Maintenance Equipment: Single prop disassembly machine, triple valve test bench, straightening machine, single prop cylinder expansion machine, single prop sealing quality detector, single prop pressure test gauge, multifunctional triple valve test bench, and other equipment;

Single Prop Ground Pressure Detection Instruments: DZ-CL-2 single prop dynamometer, SY-60 single prop resistance detector, Jiufang single prop pressure gauge, DZ-60 single prop pressure tester, YHY60 single prop digital pressure gauge, valve-controlled single prop online recorder, HC-45 single prop pressure box; YHY60D single prop resistance detector, DZ-60 single prop pressure tester, Jiufang Mining single prop online pressure recorder, YTL-60 single prop circular chart recorder, YHY60A single prop digital pressure gauge, SY-40B single prop working resistance detector;

Roof Ground Pressure Observation Instruments: LBY-3 roof separation instrument, DL-2 roof separation instrument, SMJ-2 roof separation indicator, WBY-10 roof separation instrument, KY82 roof dynamic instrument, DSB-1 roof subsidence speed detector, KBU101-200 roof-floor convergence detector, digital display roof separation instrument, multi-point displacement meter, and other instruments;

Anchor Cable Tensioning Equipment: Manual anchor cable tensioning equipment, Jiufang Mining pneumatic anchor cable tensioning equipment, MCJ-60 anchor cable dynamometer, mining anchor cable tensioning equipment, pneumatic double-cylinder anchor cable tensioning equipment, manual double-cylinder anchor cable tensioning equipment, anchor cable cutter;

Fully Mechanized Support Pressure Detection Instruments: YHY60 mining digital pressure gauge, shock-resistant fully mechanized support dual gauge, BZY-60 fully mechanized support pressure single gauge, fully mechanized support digital pressure gauge, fully mechanized support shrinkage self-recorder, and other instruments;