2012 Economy and high speed down the hole hammer

Down the hole hammer 1.Best heat treated 2.First class alloy steel 3.high speed ,most stable performance 4.Easy to maintain

Down the hole hammer

   Specification  

1.Durable impact parts

2.High speed , most stable performance

3.First class alloy steel

4.Easy to maintain

   Application fielsds  

1.Hydraulic project

2.Surface and undergroud mining

3.Shoring and grouting

4.Infrastructure

5.Foundation

 

1.This kind of hammer is designed as a strong-wind system, which can have all the high-pressure gas flush off with an aim that keep the hole’s bottom clean.The durable piston on the hardness treatment can have two end changed ,which can extend the working life .

2.Designed a changeable vapour lock,which can change the gas charge according to rocks hardness and abrasion resistance to realize the best flash effect and highest drilling effciency.

3.Simple structure and few but wearable spare parts make longer working time.

4.Front joint adding with a multiply heads thread makes the disassembly much easier.

 

Operation and maintenance  

1.The drive chuk and top sub are threaded into the cylinder with right-hand threads.The drill must be alway operated with right-hand rotation.

2.Start collaring with reduced throttle to the impact mechanism and feeding ,let the bit work its way slightly into the rock .

3.It is important that the feed force is adapted to the weight of the drill string .The force from the feed motor needs to be corrected during drilling,depending on the variable weight of the drill string.

4.The normal rotation speed for DTH lies between 15-25rpm,the upper limit generally products the best penetration rate,however ,in highly abrasive rock,rotation speed should be reduced to avoid excessive wear of the drill bit .

5.Jointing operation is the work sequence where a down -the -hole drill is most likely to experience contamination,through cutting and various kind of impurities falling down the hole drill is most likely to experience contamination,through cutting and various kind of impurities falling down the hole .Make it a rule therefore,to always cover the open thread end of a drill tube during joining.Make sure also that the drill tubes are free from cuttings and dirt .

6.Clogged or cave -in of the hole ,can lead to a stuck drill.It is best therefore ,to cleans the hole regularly intervals ,but carrying out stong air -blowing with the rock drill.

7.The importance of correct lubrication of the rock drill cannot be over -emphasized.Inadequate lubricationaccelerates wear and can ever lead to breakdown.

 

Technical Parameter 

 

Low pressure DTH hammer :  Hole range  70mm-165mm          External diameter:67mm-124mm

 

                                               Working pressure :0.5-2.1Mpa    Impact rate :3-25 m3/min

 

Model	Hole range  DIA mm	External  Diameter mm	Length mm	Weight kg	Working  Pressure MPA	Air Consumption m3/min	Impact Rate  times/min	Rod  mm
QG-76A	70-76	Φ67	766	15	0.5-0.7	3	Over 810	Φ42 Φ50
QG-90	90-100	Φ80	796	22	0.5-0.7	7	Over  840	Φ50 Φ60
QG-90A	90-100	Φ80	796	22	0.5-0.7	6	Over  840	Φ50 Φ60
QG-110A	100-120	Φ95	838	36	0.5-0.7	11	Over  840	Φ50 Φ60 Φ70
QG-930	90-100	Φ80	870	24	0.8-1.2	6	Over  700	Φ50 Φ60
QG-940	110-140	Φ80	907	38	0.7-1.7	4.5-8	810- 1450	Φ50 Φ60 Φ76
QG-115	110-140	Φ100	1038	47	1.2-2.0	3.5-15	Over  820	Φ76
QG-140	152-165	Φ124	1450	126	0.7-2.1	8.5-25	Over  822	Φ76

 

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Contact Information

 

                                           

2012 Economy and high speed down the hole hammer