National Patent

A construction method of a large diameter shaft hole in the fractured zone of bedrock

Patent for Invention ZL201510203173.8

2017-4-27

Automatic hook - hook mechanism for dynamic compaction construction

Utility Model ZL201620933538.2

2017-3-8

A large - stroke anti-twist leg oil cylinder with protective device

Utility Model ZL201620929200.X

2017-3-8

A processing device for a bath rope groove in a winch

Utility Model ZL201620931891.7

2017-3-8

Rotary drilling tool for salvage in large diammeter drill hole

Utility Model ZL201620731698.9

2016-12-21

Drill device used in dry drilling in deep holes

Utility Model ZL201620730867.7 

2016-12-21

Ventilate cap of PHC prestress pipe pile

Utility Model ZL201620351320.6

2016-10-5

Enhence method of red mud disposal site

Patent for Invention ZL201510202907.0

2016-4-27

Orfice connecting lap joint construction method of cast-in-site pile

Patent for Invention ZL201410378895.2

2016-2-24

Reverse circulation drilling device for hole forming of large diammeter drill hole

Utility Model ZL201520258328.3

2015-11-18

Minor diammeter drilling hole forming method by using full cross-section high balance-weight driling bit

Utility Model ZL201310362469.5

2015-11-18

Construction method for desulfuration test apparatus

Utility Model ZL201520259947.4

2015-9-2

Hydraumatic security device for provent winch sliding

Utility Model ZL201520258301.4

2015-9-2

Demister for light concrete

Utility Model ZL201520258329.8

2015-8-26

Construction Method of Underwater Pouring for Tall Platform Pile

Patent for Invention 201310178227.0

2014-11-26

Devices for Drying and Filtering High-pressure Compressed Air

Utility Model 201420235988.5

2014-9-24

Rapid Determining Method for Shear Strength of Regional Unsaturated Soil    

Patent for Invention 201110214469.1

2014-9-24

Testing Method Based on Multi-terminal Soil Water Characteristics Curve Test System   

Patent for Invention 201110214446.0

2014-9-24

Undisturbed Sand Sampler for Collecting Unstable Sand Specimen   

Utility Model 201320517239.7

2014-3-19

New Type Water Well Drilling Rig

Utility Model 201320516679.0

2014-3-19

New Type Trailer Water Well Drilling Rig

Utility Model 201320516686.0

2014-3-19

Hydraulic Type Drill Tower for Directional Drilling

Utility Model 201320516680.3

2014-3-19

Drill Device of Whole Section and High Balance Weight for Minor Diameter Deep Shaft 

Utility Model 201320506822.8

2014-3-12 

Portal Frame Device for Dynamic Compactor

Utility Model 201320506858.6

2014-3-12

Device for Side Post-casting of Cast-in-situ Bored Pile

Utility Model 201320506809.2

2014-1-29

Post-grouting Device for Sealing Intraductal Bottom 

Utility Model ZL 2013 2 0262219.x

2013-12-11

Tooling for Processing Taper Hole in Complex Surface

Utility Model ZL201320221479.2

2013-11-20

Wellhead Driving Device for Drilling Rig Rotary Table

Utility Model ZL201320221493.2

2013-11-20

Pedestal Drill for Pore-forming of Rotary Drilling Rig Dry Drilling 

Utility Model ZL 2013 2 0098507.6

2013-9-4

Construction Method for Post-filling Cementing Rapid Stir Pulp of Large-diameter Engineering Shaft Wall 

Patent for Invention ZL 2011 1 0181175.3

2013-4-3

Sealing Device for Receiving Opening

Utility Model ZL2012 2 0425404.1

2013-2-27

Nondestructive Detection Method for Pile Bottom Karst

Patent for Invention ZL2010 1 0539461.8

2013-1-9

Strengthening Method for Soft Foundation

Patent for Invention ZL2010 1 0539463.7

2012-1-11

Curve Tester for Soil Water Characteristics

Utility Model ZL 2011 2 0271620.0

2012-2-28

Method for Reinforcing Soft Foundation by Beforehand Arranged Hydrodynamic Consolidation    

Patent for Invention ZL.2008 1 0055390.7

2009-12-23

Well-point Canal of Drainage Solidification for Soft Soil Foundation

Utility Model ZL200820077857.3

2009-4-22

Compound Testing Method for Pile-loading & Static Load

Patent for Invention ZL200610012888.6

2008-7-16

Boring Tower

Utility Model ZL200620128467.5

2008-2-20

Self-propelled Reverse Circulation Drilling Rig

Utility Model ZL200620128468.X

2007-11-28

Pile-forming Methods and Dedicated Steel Casing for Vibratory Pile Hammer Pulling-out Steel Casing  

Patent for Invention ZL200510012856.1

2007-11-21

Technology of Cast-in-situ Bored Pile by Post-grouting Rotary Excavating

Invention Model ZL200410064568.6

2007-4-11

Combined Type Steel Casing    

Utility Model ZL200520024934.5

2006-9-20

Directional Drilling Boring Tower of Hydraulic Erection used together with Drilling Rig

Utility Model ZL200420092021.2

2005-11-9

Expanded-base Device for Pedestal Pile of Foundation Construction

Utility Model ZL01222652.1

2002-2-20

Concrete for Building  

Patent for Invention ZL95115725.6

2001-10-17