Roof-Combined Chain Haulage Top-Walking Roof Support

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Patent Number: 200510070729.7

The roof-combined chain haulage top-walking roof support is a kind of new support equipment between mechanized mining bracket and suspended bracket. It inherits the former's advantages of high safety, good entirety, no need of mesh laying, and ability to move by itself. It also has the features of strong adaptability, light weight, easy operation, convenient disassembly and assembly, as well as convenient transport.

This product can be used not only for working face with good geological conditions but also for working face with broken roof, soft floor, easy spalling, many faults, and large inclination. It can also be used for top coal caving. It functions properly when the gap between two faults is 0.5m or more.

Our product also has prominent locking function. It can still withstand 30 and 20 tons of lateral force in the front and rear as well as left and right directions respectively after leg unload. This ensures stability of the support under large mining height and large inclination of 45 degrees.

Ancillary Equipment
1. Conveyor: SGZ-630/220
2. Coal mining machine: MG160/375-W
3. Pump station: BRW-125/31.5 (two pumps one box)

This roof-combined chain haulage top-walking roof support solves the problems of some similar products in the market.
Problem 1: Poor ability to adapt to uneven roof.
Part of the top beams is in contact with the roof and only part of the legs can reach the setting load. These cause the legs that reach the setting load to be broken when the roof comes down.

Problem 2: Need of top mesh and unbalanced weight.
For suspended bracket or other brackets that have narrow top beam, top mesh is required when conducting top coal caving or supporting broken roof in various geological conditions.

Technical Parameters

Model		ZH2400/24/32ZL	ZH2200/16/24ZL
Height (m)		2.4-3.2	1.6-2.4
Length		2.42-3.16	2.42-3.16
Width		1.2	1.2
Center distance		1.25	1.25
Prop quantity		4	4
Diameter of Prop		160	140
Advance increment of support		0.63-1.0	0.63-1.0
Protruding length of protrusive beam		0.63-1.0	0.63-1.0
Quantity of protrusive beams		1-2	1-2
Setting load		1576/1533 (19.6MPa/31.5MPa)	1200/1938 (19.6MPa/31.5MPa)
Working resistance		2400	2200
Supporting strength		0.51-0.65 (at advance increment of 0.8m)	0.47-0.6 (at advance increment of 0.8m)
Floor pressure	Bottom beam type	3.6	3.3
	Normal type	4-27	4.6-24
Model defined by coal industry standard		Lx/Qd/Jk/2400/24/32	Lx/Qd/Jk/2400/16/24

Note: The above data are just for reference. For more products and their information, please contact us. We can also design and produce products according to the actual geological conditions of the mine.

Related Names
Longwall Mining Support Equipment | Mining Roof Lifting Jack | Roof Fall Restraint System

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