CN104499938B - Load simulation device of horizontal directional drilling machine - Google Patents

Load simulation device of horizontal directional drilling machine Download PDF

Info

Publication number
CN104499938B
CN104499938B CN201410577312.9A CN201410577312A CN104499938B CN 104499938 B CN104499938 B CN 104499938B CN 201410577312 A CN201410577312 A CN 201410577312A CN 104499938 B CN104499938 B CN 104499938B
Authority
CN
China
Prior art keywords
drilling machine
directional drilling
horizontal directional
load
push
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410577312.9A
Other languages
Chinese (zh)
Other versions
CN104499938A (en
Inventor
王祥军
龚俊
陈雄
伍锡文
管付如
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Wuxin Tunnel Intelligent Equipment Co Ltd
Original Assignee
Hunan Wuxin Tunnel Intelligent Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Wuxin Tunnel Intelligent Equipment Co Ltd filed Critical Hunan Wuxin Tunnel Intelligent Equipment Co Ltd
Priority to CN201410577312.9A priority Critical patent/CN104499938B/en
Publication of CN104499938A publication Critical patent/CN104499938A/en
Application granted granted Critical
Publication of CN104499938B publication Critical patent/CN104499938B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/02Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/046Directional drilling horizontal drilling

Abstract

The invention relates to the field of performance parameter detection of horizontal directional drilling machines, and provides a load simulation device of a horizontal directional drilling machine. The simulation device comprises a torque loader for connecting with a rotating power assembly of the horizontal directional drilling machine, a sliding box body for fixing the torque loader, a push-pull force loader fixed on the sliding box body, a water joint mounted on the torque loqader and connected with a stop valve, and a water tank structure for connecting with a slurry pumping system, wherein the torque loader, the push-pull force loader and the water joint are connected with a load hydraulic system; and the load hydraulic system is used for providing loads to the torque loader, the push-pull force loader and the water joint, and is connected with an instrument panel of the horizontal directional drilling machine. The load simulation device of the horizontal directional drilling machine can synchronously realize the load simulation of all important parts of the horizontal directional drilling machine indoors, and is simple in structure and easy in operation.

Description

A kind of horizontal directional drilling machine load simulating device
Technical field
The present invention relates to horizontal directional drilling machine performance parameter detection field, more particularly to a kind of horizontal directional drilling machine load mould Intend device.
Background technology
The application of no-dig laying pipelines technique is increasingly extensive, and horizontal directional drilling machine is to realize small-bore (≤Φ 1500) pipe laying most Efficient, most economical equipment.The pipe-laying technique of current horizontal directional drilling machine is mainly used in electric power, telecommunications, oil, natural The municipal construction such as gas, sewage, drinking water field.Before horizontal directional drilling machine puts goods on the market, it is necessary to the overall performance of rig and Design parameter does comprehensively detection.Rotary power assembly, push-and-pull power assembly, girder assembly, mud pumping assembly are that level is determined To four the most key big parts of rig, effect of this four big part in horizontal directional drilling machine work is respectively:Rotary power Assembly output torque, push-and-pull power assembly push-pull force output, the composite force that both girder assembly bearing torque and push-pull effort are produced Square, the output pressure fluid when rig works of mud pump assembly detect being also to overall performance to this four big part Complete detection.
Fig. 1 is referred to, the figure is a kind of structural representation of typical horizontal directional drilling machine in the prior art.
Horizontal directional drilling machine includes girder assembly 102, and instrument board 101 is fixed with the girder assembly 102, wherein First pressure table 101a including showing the torque loads of horizontal directional drilling machine, the second pressure table 101b of display push-and-pull load, 3rd pressure gauge 101c of display mud pumping load, and standby pressure table 101d, specifically refer to Fig. 2.In addition, greatly Tooth bar 103, rotary power assembly 105, push-and-pull casing 107, push-and-pull power assembly 108 are also equipped with beam assembly 102.Wherein, Rotary power assembly 105 includes the first reductor 105c and the first motor 105d again, and by locking nut 105a and connecting shaft 105b is fixed on push-and-pull casing 107.Push-and-pull power assembly 108 includes the second motor 108a, the second reductor 108b and tooth again Wheel 108c, and be fixed on push-and-pull casing 107 by bolt 108d.When horizontal directional drilling machine works, by the feelings of push-pull effort Under condition, gear 108c and the tooth bar 103 of push-and-pull power assembly 108 realize rack and pinion engagement, and do straight on girder assembly 102 Line is moved.Described rotary power assembly 105 is connected by the first valve block 104 and the first fluid pressure line 106 with hydraulic system 112 Connect, described push-and-pull power assembly 108 is connected by the second valve block 109 and the second fluid pressure line 110 with hydraulic system 112, And it is collectively forming independent horizontal directional drill machine hydraulic system.Also, rotary power assembly 105, push-and-pull power assembly 108 also with Mud pumping system 111 is connected.
The domestic test of dispatching from the factory to rig at present has two kinds:One kind is to carry out unloaded detection or a certain to rig indoors Parameter does load simulation detection, it is impossible to which the combination property to rig is detected, it is impossible to comprehensively exclude because of underproof outsourcing The drill rig components failure that the reasons such as part, irrational assembling are produced, so can bury serious potential safety hazard, very to practice of construction To bringing economic loss and personal safety accident;Another kind is to carry out actual borehole, time expansion test, such test energy in outdoor Fictitious load, but the cycle of detection is long, high cost, and restricted by place, weather conditions.
In view of this, need badly and a kind of indoor load simulating device is provided, realize the inspection of horizontal directional drilling machine combination property Survey.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is how to provide a kind of load simulating device of interior, realizes horizontal orientation The detection of rig combination property.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of horizontal directional drilling machine load simulating device, for mould Pseudo level directional drilling machine workload, the load simulating device includes:
Torque loads device, the rotary power assembly for connecting horizontal directional drilling machine;
Water swivel, stop valve is connected with the torque loads device, and on the water swivel;
Casing is slided, for fixing the torque loads device;
Push-pull effort loads device, is fixed on the slip casing, the push-and-pull power assembly for connecting horizontal directional drilling machine;
Load hydraulic system, is fixed on the slip casing, connects the torque loads device, push-pull effort load device and water Joint, for providing load to torque loads device, push-pull effort load device and water swivel;
Cisten mechanism, for being connected with mud pumping system.
Preferably, the load hydraulic system is used to be connected with the pressure gauge of horizontal directional drilling machine.
Preferably, the water swivel for being connected with stop valve is additionally operable to be connected with the pressure gauge of horizontal directional drilling machine.
Preferably, the load simulating device also includes connecting rod, and the connecting rod is used to connect torque loads device and water The rotary power assembly of flat directional drilling machine.
Preferably, the connecting rod is connected with rotary power assembly by the tapered tread of itself, and connecting rod and moment of torsion are negative Device is carried to be connected by the first fastening bolt.
Preferably, the cisten mechanism includes the first water pipe for being connected with mud pumping system, and for connecting Second water pipe of mud pumping system and rotary power assembly.
Preferably, the torque loads device includes the first motor and the first reductor;
The torque loads device is fixed on slip casing by connecting shaft, locking nut.
Preferably, the push-pull effort load device includes the second motor, the second reductor and gear;
The push-pull effort load device is bolted on slip casing.
Preferably, load hydraulic system includes the first fluid pressure line, the first valve block and the second pipeline, the second valve block;
Wherein, the first fluid pressure line, the first valve block are used to connect torque loads device;
Second pipeline, the second valve block are used to connect push-pull effort load device.
(3) beneficial effect
Horizontal directional drilling machine load simulating device of the invention, rotates by torque loads device dummy level directional drilling machine Performance when power assembly is loaded.In addition, push-pull effort load device is fixed on same slip casing with torque loads device, therefore push away Tensile load device is connected with push-and-pull power assembly indirectly by torque loads device, so as to simulate the loading of push-and-pull power assembly Energy.At the same time, the gear of torque loads device, push-pull effort load device again indirectly with push-and-pull power assembly in horizontal directional drilling machine connects Connect, and gear is engaged with the tooth bar being fixed on girder assembly, the driving force of rack-and-pinion is acted on girder assembly, so that Realize the fictitious load detection to girder assembly.Between water tank connection mud pumping system one end, the other end of mud pumping system Connect and be connected with water swivel, by controlling the size of cut-off valve regulation hydraulic pressure, it is achieved thereby that the load detecting of mud pumping system With the sealing property of whole system.Therefore, horizontal directional drilling machine load simulating device of the invention can realize institute simultaneously indoors There is the load simulation of horizontal directional drilling machine pith, and its simple structure is easily operated.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1:A kind of structural representation of typical horizontal directional drilling machine in the prior art;
Fig. 2:Direction view K in Fig. 1;
Fig. 3:A kind of use state schematic diagram of horizontal directional drilling machine load simulating device that the present invention is provided;
Fig. 4:The schematic side view of M directed sections in Fig. 3;
Fig. 5:Close-up schematic view at A in Fig. 3;
Fig. 6:Close-up schematic view at B in Fig. 3;
1st, horizontal directional drilling machine;2nd, hydraulic system is loaded;201st, the first valve block;202nd, the second fastening bolt;203rd, first Fluid pressure line;204th, the second fluid pressure line;205th, the second valve block;3rd, casing is slided;4th, push-pull effort load device;401st, the first horse Reach;402nd, bolt;403rd, the first reductor;404th, gear;5th, water swivel;6th, torque loads device;601st, the second motor;602nd, Two reductors;603rd, locking nut;604th, connecting shaft;7th, the first fastening bolt;8th, connecting rod;9th, the first pipeline;10th, the second pipe Road;11st, water tank;12nd, stop valve.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following examples are used for The present invention is illustrated, but can not be used for limiting the scope of the present invention.
The present invention provides a kind of horizontal directional drilling machine load simulating device, for dummy level directional drilling machine workload, Including:Torque loads device 6, the rotary power assembly for connecting horizontal directional drilling machine;Water swivel 5, it is negative installed in the moment of torsion Carry on device 6, and stop valve 12 is connected with the water swivel 5;Casing 3 is slided, for fixing the torque loads device 6;Push-and-pull Power loads device 4, is fixed on the slip casing 3, the push-and-pull power assembly for connecting horizontal directional drilling machine;Load hydraulic pressure system System 2, is fixed on the slip casing 3, the load of torque loads device 6, push-pull effort device 4 and the water swivel 5 is connected, for torsion Square load device 6, push-pull effort load device 4 and water swivel 5 provide load;The structure of water tank 11, for being connected with mud pumping system.
Fig. 3 is referred to, a kind of use shape of horizontal directional drilling machine load simulating device that the figure is provided for present embodiment State schematic diagram.
The structure of torque loads device 6 refers to Fig. 4, as shown torque loads device 6 be fixed on slip casing 3 on, preferably but It is not limited to realize fixing by connecting shaft 604 and locking nut 603, the core component of torque loads device 6 includes the second motor 601st, the second reductor 602.Torque loads device 6 is connected with the rotary power assembly of horizontal directional drilling machine, and its connected mode is preferred Realized by a connecting rod 8.Specifically, the one end of the connecting rod 8 is with rotary power assembly, and the tapered tread of itself is connected, please Referring to Fig. 5.The other end of the connecting rod 8 is connected by the first fastening bolt 7 with torque loads device 6.
Slide and push-pull effort load device 4 is further fixed on casing 3, push-pull effort load device 4 preferably but not limited to passes through bolt 402 fix with casing 3 is slided, and in this programme, the core component of push-pull effort load device 4 includes the first motor 401, the first reductor 403rd, gear 404.Because push-pull effort loads device 4 being fixed with casing 3 is slided, slide casing 3 and fixed with torque loads device 6 again;Together When, torque loads device 6 is connected with rotary power assembly, and rotary power assembly is fixed on push-and-pull casing, and push-and-pull power assembly It is fixed on again on the push-and-pull casing.Can be drawn by above-mentioned annexation, be between push-pull effort load device 4 and push-and-pull power assembly Relation is indirectly connected with, and the transmission of push-pull effort can be realized.When the push-pull effort of push-pull effort load device 4 loads reaction in push-and-pull power During assembly, push-and-pull power assembly moves along a straight line on tooth bar, and push-pull effort load device 4 does also by its gear 404 on tooth bar Linear motion, and motion of the push-and-pull power assembly with push-pull effort load device 4 on tooth bar is linkage, and its direction is referring in Fig. 3 Shown in " v ".
Mud pumping system is connected with water tank 11 by second pipe 10, and rotary power assembly passes through with mud pumping system First pipeline 9 is connected, and the fluid of water tank 11 is by second pipe 10, mud pumping system, the first pipeline 9, rotary power assembly, company Extension bar 8, torque loads device 6, water swivel 5, stop valve 12 return water tank 11 through A1.Wherein, between water swivel 5 and stop valve 12 The 3rd pressure gauge of horizontal directional drilling machine is connected, Fig. 6 is specifically referred to.
Load hydraulic system 2 is fixed on the slip casing 3, is preferably but not limited to consolidate by the second fastening bolt 202 It is fixed.The load hydraulic system 2 includes the first valve block 201, the second valve block 205, the first fluid pressure line 203, the second fluid pressure line 204, and torque loads device 6, the second fluid pressure line 204, the second valve block are connected by the first fluid pressure line 203, the first valve block 201 205 connection push-pull effort load devices 4.Hydraulic system provides pressure fluid, input to torque loads device 6 and push-pull effort load device 4, changes Varying load torque and load push-pull power size.In addition, load hydraulic system 2 connects with the instrument board of horizontal directional drilling machine Connect.
When being connected by connecting rod 8 between torque loads device 6 and the rotary power assembly of horizontal directional drilling machine:Start water Calm down to drilling rig hydraulic system, drive the related constituent components in rotary power assembly, make rotary power assembly output torque, revolve Rotatory force assembly is rotated and drives connecting rod 8, and torque loads device 6 provides load torque, realizes that torque loads are detected, realizes that rotation is dynamic Power assembly is detected.By adjusting the pressure of horizontal directional drilling machine first pressure table, change load torque value.
Start horizontal directional drill machine hydraulic system, while the related constituent components in rotary power assembly are driven, Drive the related constituent components in push-and-pull power assembly.The wheel and rack of push-and-pull power assembly realizes rack and pinion engagement, Moved along a straight line on girder assembly, and drive push-and-pull casing, slide casing 3, push-pull effort load device 4 provides load push-pull power, real Existing push-pull effort load detecting.By adjusting the pressure of the second pressure table in horizontal directional drilling machine instrument board come regulating load push-and-pull Value.
From the foregoing, it will be observed that starting horizontal directional drill machine hydraulic system, the related composition in rotary power assembly can be simultaneously driven Component and the related constituent components in push-and-pull power assembly, detect while torque loads and push-pull effort load are realized.Due to Slide casing 3, push-pull effort load device 4, torque loads device 6, connecting rod 8, rotary power assembly, push-and-pull power assembly, push-and-pull case An entirety is connected as between body, and is moved along a straight line on girder assembly by rack and pinion engagement, the transmission of rack-and-pinion Power is acted on girder assembly, so as to realize the fictitious load detection to girder assembly.
At the same time, the threshold values of stop valve 12 is changed by adjusting the 3rd pressure gauge, so as to change the load pressure of hydraulic pressure Power, realizes the load detecting of mud pumping system and the sealing property of whole system.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although with reference to embodiment to this hair It is bright to be described in detail, it will be understood by those within the art that, technical scheme is carried out various combinations, Modification or equivalent, without departure from the spirit and scope of technical solution of the present invention, all should cover will in right of the invention Ask in the middle of scope.

Claims (9)

1. a kind of horizontal directional drilling machine load simulating device, for dummy level directional drilling machine workload, it is characterised in that institute Stating load simulating device includes:
Torque loads device, the rotary power assembly for connecting horizontal directional drilling machine;
Water swivel, stop valve is connected with the torque loads device, and on the water swivel;
Casing is slided, for fixing the torque loads device;
Push-pull effort loads device, is fixed on the slip casing, the push-and-pull power assembly for connecting horizontal directional drilling machine;
Load hydraulic system, is fixed on the slip casing, connects the torque loads device, push-pull effort load device and water and connects Head, for providing load to torque loads device, push-pull effort load device and water swivel;
Cisten mechanism, for being connected with mud pumping system.
2. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that the load hydraulic system It is additionally operable to be connected with the pressure gauge of horizontal directional drilling machine.
3. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that described to be connected with stop valve Water swivel be additionally operable to be connected with the pressure gauge of horizontal directional drilling machine.
4. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that the load simulating device Also include connecting rod, the connecting rod is used to connect the rotary power assembly of torque loads device and horizontal directional drilling machine.
5. horizontal directional drilling machine load simulating device according to claim 4, it is characterised in that the connecting rod and rotation Power assembly is connected by the tapered tread of itself, and connecting rod and torque loads device are connected by the first fastening bolt.
6. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that the cisten mechanism includes For the first water pipe being connected with mud pumping system, and for connecting the second of mud pumping system and rotary power assembly Water pipe.
7. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that the torque loads device bag Include the first motor and the first reductor;
The torque loads device is fixed on slip casing by connecting shaft, locking nut.
8. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that the push-pull effort loads device Including the second motor, the second reductor and gear;
The push-pull effort load device is bolted on slip casing.
9. horizontal directional drilling machine load simulating device according to claim 1, it is characterised in that load hydraulic system includes First fluid pressure line, the first valve block and the second pipeline, the second valve block;
Wherein, the first fluid pressure line, the first valve block are used to connect torque loads device;
Second pipeline, the second valve block are used to connect push-pull effort load device.
CN201410577312.9A 2014-10-24 2014-10-24 Load simulation device of horizontal directional drilling machine Active CN104499938B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410577312.9A CN104499938B (en) 2014-10-24 2014-10-24 Load simulation device of horizontal directional drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410577312.9A CN104499938B (en) 2014-10-24 2014-10-24 Load simulation device of horizontal directional drilling machine

Publications (2)

Publication Number Publication Date
CN104499938A CN104499938A (en) 2015-04-08
CN104499938B true CN104499938B (en) 2017-05-24

Family

ID=52941379

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410577312.9A Active CN104499938B (en) 2014-10-24 2014-10-24 Load simulation device of horizontal directional drilling machine

Country Status (1)

Country Link
CN (1) CN104499938B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192253A1 (en) * 1985-02-21 1986-08-27 Construction Robotics, Inc. Boom assembly
RU2109125C1 (en) * 1994-09-30 1998-04-20 Всероссийский научно-исследовательский институт методики и техники разведки (ВИТР) Stand for simulating operation of drilling string in inclined bore-hole
CN101726330A (en) * 2008-10-15 2010-06-09 中国石化集团胜利石油管理局钻井工艺研究院 Device for testing stable platform
CN201517369U (en) * 2009-10-30 2010-06-30 中国石油天然气股份有限公司 Multi-angle horizontal branch well natural gas extraction simulator
CN203188907U (en) * 2013-04-23 2013-09-11 北京南车时代机车车辆机械有限公司 Load analog device of rotary drilling rig
CN203785909U (en) * 2014-02-12 2014-08-20 徐工集团工程机械股份有限公司 Energy-saving control key parameter detection device for rotary drilling rig

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192253A1 (en) * 1985-02-21 1986-08-27 Construction Robotics, Inc. Boom assembly
RU2109125C1 (en) * 1994-09-30 1998-04-20 Всероссийский научно-исследовательский институт методики и техники разведки (ВИТР) Stand for simulating operation of drilling string in inclined bore-hole
CN101726330A (en) * 2008-10-15 2010-06-09 中国石化集团胜利石油管理局钻井工艺研究院 Device for testing stable platform
CN201517369U (en) * 2009-10-30 2010-06-30 中国石油天然气股份有限公司 Multi-angle horizontal branch well natural gas extraction simulator
CN203188907U (en) * 2013-04-23 2013-09-11 北京南车时代机车车辆机械有限公司 Load analog device of rotary drilling rig
CN203785909U (en) * 2014-02-12 2014-08-20 徐工集团工程机械股份有限公司 Energy-saving control key parameter detection device for rotary drilling rig

Also Published As

Publication number Publication date
CN104499938A (en) 2015-04-08

Similar Documents

Publication Publication Date Title
CN205363868U (en) Pipeline inspection special robots
RU2008141292A (en) COMBINED INSTALLATION OF UNDERGROUND REPAIR OF WELLS
CN205226751U (en) Pipeline inspection microrobot
CN103323232A (en) Wind driven generator coupler slipping torque calibration test bed and calibration method
CN106468605B (en) A kind of torque limiter breakaway torque Calibrating experimental bench on wind driven generator coupler
CN103353395A (en) Hydraulic loading device for large marine propulsion shafting test bed
CN204140004U (en) A kind of continuous oil pipe operation equipment
CN102706673A (en) Whole-machine data analysis and testing device for rotary drilling rig
CN107621379A (en) A kind of drill jumbo testing equipment
CN104499938B (en) Load simulation device of horizontal directional drilling machine
CN201326410Y (en) Tugger of logging tool
CN204941363U (en) Telescopic well sinker drilling cramp lifting gear
CN204657903U (en) Automobile gearbox oil pump bolt tightening and checkout equipment
CN104309617B (en) Can convenient and swift adjustment penstock installation site realize its transport trolley
CN204101281U (en) A kind of test unit of hoist crane
CN204136996U (en) Can convenient and swift adjustment penstock installation site realize its transport trolley
CN106441863A (en) Test bench for detecting vehicle transmission system
CN203050497U (en) Rotary device and oil-water well drilling repair dynamic rotary system using same
CN206320093U (en) A kind of rig hydraulic wireline winch testing stand
CN202451046U (en) Dual-purpose integral hydraulic power head of long spiral drilling machine
CN102562698A (en) Gyration locking valve, rotating table locking system and engineering machinery
CN206860091U (en) A kind of rig multiaxis unit head and rig
CN202631281U (en) Overall data analysis and test device of rotary drilling rig
CN206429192U (en) A kind of drilling rod drive device
CN205591825U (en) Big moment of torsion back -off table drive device is adorned to well drilling sled

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 410100 Hunan Province Economic and Technological Development Zone Changsha Panpan Road No. 18-1

Applicant after: HUNAN WUXIN TUNNEL INTELLIGENT EQUIPMENT CO., LTD.

Address before: 410100 Hunan province Changsha Panpan Road Economic Development Zone No. 18-1

Applicant before: Hunan Wuxin Heavy Equipment Co., Ltd.

COR Change of bibliographic data
GR01 Patent grant
GR01 Patent grant