A drilling and bolting machine consists of one, two or three rock drill carriages, sometimes a platform, which the miner stands on to load the holes with explosives, clear the face of the tunnel or else. The carriages are bolted onto the chassis, which supports also the miners cabin and of course the engine. Modern drilling jumbos are relatively large, there are however smaller ones for use in cramped conditions. Whereas modern jumbos usually fitted with rubber tyres and diesel-powered, there are also exist variants with steel wheels, to ride on rails and even single carriage sled-mounted ones. Electric power is also common, historic jumbos were powered by compressed air. Electricity and compressed air produce no exhaust gases, which is preferable if work is done in smaller tunnels where good ventilation is difficult.
Mining Machinery,Mining Bolting Machine,Underground Mining Machines,Drilling And Bolting Machine NORTH HEAVY GRYPS EQUIPMENT AND ENGINEERING CO.,LTD , https://www.nhgtunnel.com
The engineering chain and conveyor chains listed on this page are produced by Dongwu, a morden conveyor chain manufacturer based in China, these products are especially designed for automated logistics equipment , material handling equipment, engineering vehicles, and more. Â We produce chains according to your customized requirements.
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Chain TypeÂ
Welded chain,                   Roller chain,                      Â
Hollow pin chain ,              Drawbench chain,                  Â
Leaf chain,                        Engineering chain,             Â
Paver chain,                       Bucket elevator chain,     Â
Skid chain,                        Sugar mill chain,                   Â
Double flex chain,             Sharp top chain,                 Â
 Forged chain,                   Cast chain ,                 Â
FV/FVC/FVT series chain,   Scraper chain           Â
M/MVT/MC serise chain,                                       Â
Z/ZC serise chain,                                           Â
stainless steel chain ,              Â
Sprocket
Material
 carbon steel or Alloy with heat treatment /stainless steel                                                                                             (through harden/case  harden/induction harden)
Surface
shot peening                                                                            zinc-plated                      Â
Dacromet                          blacking                                                    Â
lubricating ,free of rust
Quality inspection
inspect length precision and hardness,                                   Â
pre-stretching after assembling,
Package
polybag+plywood case
Â
Application
sugar mill,cement mil,l metallurgy industry,             automobile industry,grain machine.mining machine and so on
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We Have All Kinds of Chains
Why Choose DCC?Â
1.Changzhou Dongwu chain transmission manufacturing co.,Ltd is a professional manufacture of chains,and is the member unit of China National technical committee for standardization for china transmission,
2.we occupied an area over 100 thousand sqm,owned standard workshops over 30 thousands sqm and over 300sets of professional equipments to produce chains in large-scale as well as complete inspection and test devices.
3.we passed through the authentications of ISO9001:2000 international quality system and ISO14001 environmental management system .
4,we have 75% of products which are exported to Europe,America,Japan , Southeast Asia ,and so on,
5.More than 10years factory experience ,Nearly all the parts are produced by our own factory,therefor we can control the cost and quality.
Â
Engnieering chain and Conveyor chain
The engineering chain and conveyor chains listed on this page are produced by Dongwu, a morden conveyor chain manufacturer based in China, these products are especially designed for automated logistics equipment , material handling equipment, engineering vehicles, and more. Â We produce chains according to your customized requirements.
Â
Chain TypeÂ
Welded chain,                   Roller chain,                      Â
Hollow pin chain ,              Drawbench chain,                  Â
Leaf chain,                        Engineering chain,             Â
Paver chain,                       Bucket elevator chain,     Â
Skid chain,                        Sugar mill chain,                   Â
Double flex chain,             Sharp top chain,                 Â
 Forged chain,                   Cast chain ,                 Â
FV/FVC/FVT series chain,   Scraper chain           Â
M/MVT/MC serise chain,                                       Â
Z/ZC serise chain,                                           Â
stainless steel chain ,              Â
Sprocket
Material
 carbon steel or Alloy with heat treatment /stainless steel                                                                                             (through harden/case  harden/induction harden)
Surface
shot peening                                                                            zinc-plated                      Â
Dacromet                          blacking                                                    Â
lubricating ,free of rust
Quality inspection
inspect length precision and hardness,                                   Â
pre-stretching after assembling,
Package
polybag+plywood case
Â
Application
sugar mill,cement mil,l metallurgy industry,             automobile industry,grain machine.mining machine and so on
Â
We Have All Kinds of Chains
Why Choose DCC?Â
1.Changzhou Dongwu chain transmission manufacturing co.,Ltd is a professional manufacture of chains,and is the member unit of China National technical committee for standardization for china transmission,
2.we occupied an area over 100 thousand sqm,owned standard workshops over 30 thousands sqm and over 300sets of professional equipments to produce chains in large-scale as well as complete inspection and test devices.
3.we passed through the authentications of ISO9001:2000 international quality system and ISO14001 environmental management system .
4,we have 75% of products which are exported to Europe,America,Japan , Southeast Asia ,and so on,
5.More than 10years factory experience ,Nearly all the parts are produced by our own factory,therefor we can control the cost and quality.
Â
Model NO.: Different chain
Samples: Free on Discussion
Leading Time: 50 Days
Production Standards: According to Approved Drawings
Trademark: DongChuan
Specification: to customer requirements
Origin: Jiangsu Changzhou, China
HS Code: 7315890000
Model NO.: Different chain
Samples: Free on Discussion
Leading Time: 50 Days
Production Standards: According to Approved Drawings
Trademark: DongChuan
Specification: to customer requirements
Origin: Jiangsu Changzhou, China
HS Code: 7315890000
Engnieering chain and Conveyor chain