Patented Technology
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Item Patented Certificate No. Patented Technology
1   95110838.7 Hrydraulic control system for hydraulic rock drilling rig
2   96118034.X Hydraulic impacting device for adjustable Independent impacting force and frequency
3   93110671.0 Hydraulic Static Pile Driver
4   93115614.9 Impacter
5   01119587.8 Testing device and method for impacting output performance
6   95237127.8 Auto-shift device for hydraulic rock drilling rig
7   97238154.6 Adjusting valve for downhole drilling rig
8   99233328.8 Rock crush impacting device
9   99233167.6 Supporting mechanism for hydraulic static pile driver
10   99233166.8 Pile clamping mechanismfor hydraulic static pile driver
11   99218218.2 Hydraulic impacter
12   01225688.9 Testing device for impacting output performance
13   02202431.X Long boat traveling mechanism for hydraulic static pile driver
14   200720063095.7 Hydraulic power head for long screw drilling machine
15   200720063096.1 Pile clamping mechanism for wedge typed hydraulic cylinder of piling
16   200520051075.9 Rotation replacing mechanism for hydraulic static pile driver
17   200520104830.5 Inteligent controled hydraulic shocker
18   200520050886.7 Connection mechanism of cantilever and machine body for hydrauilc static pile driver
19   200520050203.8 Adjust device for hydraulic static pile driver
20   200520051130.4 Hydraulic control system for piling of hydraulic static pile driver
21   200810143594.6 Hydraulic hammer control system of gas and liquid for adjustable impacting force and frequency
22   200820159190.1 Hydraulic pile hammer of adjustable impacting force and frequency

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