159彩票

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亿煤机械装备制造有限公司

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Air volume sensor technical parameters

Mine intelligent air volume sensor is mainly used for the detection of wind speed and air volume in various tunnels, air outlets, fan heads and other underground mines to ensure the safe production of coal mines.

Working principle of DYTN single and double-sided electro-hydraulic plow unloader

The electro-hydraulic plow unloader uses the electro-hydraulic push rod as the power source. During work, the push rod is extended to act on the drive rod to drive the frame forward to complete the fall of the coulter and support the flat roller group to make the tape work. The surface is flat and the lower edge of the coulter fits tightly to the tape surface. The materials on the running tape are discharged into the funnel (hopper), or unloaded to the required field. When unloading is completed, the electro-hydraulic push rod is activated to retract and act on the driving rod, which drives the frame back, the coulter is raised, and the variable slot angle idler roller group is changed from flat to groove, so that the working surface of the tape is restored to the groove state, The material passes smoothly.

Main structure of bridge crane

Taking the JQ900A gantry type double main beam three-leg bridge crane as an example, it mainly consists of the arm, the first crane trolley, the second crane trolley, the first pillar, the second pillar, the third pillar, the hydraulic system, the electrical System, diesel generator set and safety protection monitoring system

Electric hoist precautions

Electric hoist precautions

28

December

2019

For electric hoists newly installed or installed after disassembly and inspection, the empty car trial operation should be performed several times first. But before the installation is completed, do not turn on the test drive.

Planetary characteristics

Planetary characteristics

25

December

2019

The star carrier is one of the main components of the planetary gear transmission, and the planet wheel shaft or bearing is mounted on the planet carrier. When the planetary gear is used as the basic component, it is the part in the mechanism that is subjected to external torque. The structure design and manufacturing of the planetary gears have a great impact on the load distribution between the planetary gears and the bearing capacity, noise and vibration of the transmission.

How hydraulic chain tensioners work

How hydraulic chain tensioners work

twenty one

December

2019

Firstly, the high-pressure emulsion in the pumping station enters the system through a ball stop valve and a filter, and is decompressed to 15 MPa by a pressure reducing valve. When the manual reversing valve is in the lower position, the emulsion is divided into two paths, one of which flows into the motor through the hydraulic control check valve group, and returns to the liquid through the other hydraulic control check valve group on the oil return path, thereby driving the motor to drive the sprocket assembly. Reverse,

Hair dryer features and precautions

Generally speaking, rigid shafts should be used when excavating vertical shafts, with a diameter of 600-1000mm; flexible shafts should be used when driving in flat and inclined lanes. The diameter of the fan should be determined according to the ventilation distance and the amount of air passing through the fan. It should be ensured that the maximum air supply length can meet the requirements of the working surface. In order to reduce wind resistance, reduce air leakage, and save energy consumption of ventilation, if the cross section of the roadway allows, choose a fan with a larger diameter as much as possible.

Safety regulations for cement sleepers

1. Reinforced concrete sleepers have a long service life, high stability, small maintenance workload, and a much lower damage rate and scrap rate than wooden sleepers. 2. Wood sleepers made of wood have the advantages of good elasticity, easy processing and convenient use.

Related Introduction

Related Introduction

11

December

2019

Hand-cranked top: also known as mechanical jack, is a hand-cranked lifting tool. Can be used as a top and shoulder lifting function in a variety of projects. It plays a good role in improving work efficiency and reducing labor intensity.

Vertical shaft platform

Vertical shaft platform

06

December

2019

The axis of the main beam of the center of the sky wheel platform must be perpendicular to the centerline of the drilling well, so that the maximum lifting dynamic load during the drilling is consistent with the direction of the maximum bearing capacity of the derrick, and the lifting load is directly transmitted to the derrick foundation through the main beam.

Inspection of scraper

Inspection of scraper

30

November

2019

(1) Check the safety hazards on the working face and the smoothness of the road, and deal with problems in a timely manner. (2) Check the oil level of the oil tank of the hydraulic system. (3) Check whether the lubrication condition of each lubrication point is good.

Classification and use of welded pipe

It is also divided into general welded pipe, galvanized welded pipe, oxygen blown welded pipe, wire casing, metric welded pipe, idler pipe, deep well pump pipe, automotive pipe, transformer pipe, welded thin wall pipe, welded shaped pipe, scaffolding pipe and spiral welded pipe .

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