Zhengzhou Qugong Machinery Equipment Co., Ltd.
Main products:Air Compressor,Screw Compressor
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  • Contact Person : Ms. Lee Admin
  • Company Name : Zhengzhou Qugong Machinery Equipment Co., Ltd.
  • Tel : 86-371-66880787
  • Fax : 86-371-66726089
  • Address : Henan,Zhengzhou,The South Room of 14th floor, Unit3, No.28 Yiquan Community,Shangzhuang Village,Nancao Town,Guancheng District
  • Country/Region : China
  • Zip : 450000

2012 Economy and high speed drilling DTH hammer

2012 Economy and high speed drilling DTH hammer
Product Detailed
Drilling DTH hammer 1.Best heat treated 2.First class alloy steel 3.high speed ,most stable performance 4.Easy to maintain

Drilling DTH 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 lubrication accelerates 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

 

 

 

 

Photos

 

          

About US

Our factory have 24 years experiences in manufacutring all kinds DTH hammer,at the same time ,we have good faith  both in our countries and foreign markets .

 If your like our product ,welcome to contace us anytime when you feel free.

Contact Information

 

                                           

2012 Economy and high speed drilling DTH hammer



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