CN106089045A - A kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis - Google Patents
A kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis Download PDFInfo
- Publication number
- CN106089045A CN106089045A CN201610544682.1A CN201610544682A CN106089045A CN 106089045 A CN106089045 A CN 106089045A CN 201610544682 A CN201610544682 A CN 201610544682A CN 106089045 A CN106089045 A CN 106089045A
- Authority
- CN
- China
- Prior art keywords
- underframe
- supporting cylinder
- guiding mechanism
- roadway floor
- rig
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 238000005086 pumping Methods 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims description 3
- 230000004807 localization Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 239000011435 rock Substances 0.000 description 10
- 239000003245 coal Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/022—Control of the drilling operation; Hydraulic or pneumatic means for activation or operation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/024—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting having means for adapting to inclined terrain; having means for stabilizing the vehicle while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis, including underframe (1), workpiece (2), added (3) and device positioning element (4)；Added it is fixedly mounted on underframe；Workpiece is arranged on underframe, including body (21), front and back guiding mechanism (22), front and back detent mechanism (23), left and right guiding mechanism (24), left and right detent mechanism (25), rig installing rack (26) and rig (27)；Device positioning element includes location supporting cylinder, top (41), location supporting cylinder, bottom (42) and control valve group and pumping plant (43), and control valve group and pumping plant are connected with top location supporting cylinder and location, bottom supporting cylinder respectively.This realizes quickly holing roadway floor on the premise of mobile diagonal angle cross bearing roadway floor armature boring chassis provides reverse holding power, and entirety improves rockbolt installation speed, is adapted to the requirement of Quick Road-Made.
Description
Technical field
The present invention relates to a kind of drilling jumbo, specifically one be applicable to underground coal mine roadway floor carries out anchor pole of holing
The most mobile diagonal angle cross bearing roadway floor armature boring chassis of supporting, belongs to down-hole support equipment technical field.
Background technology
Due to the self-characteristic of different depth rock mass and the difference of residing ambient stress around tunnel, transported by geologic rhythm
The factor impacts such as dynamic, ground water pressure, country rock easily produces Incoordinate deformation, exploits especially for underground coal mine, top, tunnel, the end
Plate and two helps country rock to be deformed and move in tunnel, and the phenomenon that wherein roadway floor or gob floor upwards swell is i.e.
Referred to as pucking, pucking is a kind of dynamic phenomenon often occurred in roadway, it and the character of country rock, mining influence, mining depth
And geological structure etc. is directly related, some Floor Heave in Roadway amount of domestic mine even account for top, tunnel, the base plate amount of shifting near 70% with
On, bigger particular for mining depth, have that stress is high, temperature is high, subsoil water hydraulic pressure is high, strength of turbulence is high, danger of burst
The deep-seated setting of feature, high stress and soft rock mine roadway and the chambers such as height, creep is obvious, deformation is big, pucking makes roadway deformation, section become
Little, drastically influence the links such as mine ventilation, transport and personnel's walking, restriction mine safety and high-yield and high-efficiency and produce.
Underground coal mine prevents the generation of pucking phenomenon from not only wanting reinforcement roadway support, reinforced design method, and will be according to specifically
Wall rock geology condition take measures pucking amount is reduced to allowed band, generally use method for strengthening, destressing method, combination method and add
Gu the methods such as tunnel side, angle reduce pucking phenomenon, wherein method for strengthening is to be enclosed base plate by raising floor rocks intensity or raising
The supporting power of rock reaches the purpose of floor lift control, is a kind of the most frequently used pucking control method.
Improve the intensity of floor rocks, mainly have floor grouting, floor bolting etc., base plate is being used suspension roof support
Needing during operation first to hole base plate, traditional method need to be with pin or reversely air leg support above drilling rod in boring procedure
On back, to provide reverse holding power, but due in order to ensure that roadway floor does not destroys before installing anchor pole, it is necessary to
Installing anchor pole in driving face certain distance, the size of this distance is relevant with the character of floor rock, typically should be little
In 10 meters, the most unaffected in order to ensure tunnelling speed, the speed of usual rockbolt installation wants fast, and this traditional brill
Hole method operation not only complicated, manpower and materials consume big, and hole and install the speed of anchor pole compared with slow, efficiency is low, inadaptable
Requirement in Quick Road-Made.
Summary of the invention
For the problems referred to above, the present invention provides a kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis, knot
Structure is simple, it is possible to realize quickly roadway floor being carried out drilling operation on the premise of providing reverse holding power in boring procedure,
And then entirety improves rockbolt installation speed, it is adapted to the requirement of Quick Road-Made.
For achieving the above object, this includes underframe, work from mobile diagonal angle cross bearing roadway floor armature boring chassis
Parts, added and device positioning element；
Described added being fixedly mounted on underframe, underframe bottom is provided with at least one deflecting roller and at least includes one group of coaxially side
To the drivewheel arranged, drivewheel is connected with driving hydraulic motor, and deflecting roller is connected with steering hydraulic motor, and underframe is additionally provided with
Working pedal and guidance panel；
Described workpiece is arranged on underframe, including body, front and back guiding mechanism, front and back detent mechanism, left and right Guiding machine
Structure, left and right detent mechanism, rig installing rack and rig；Before and after body is arranged by fore-and-aft direction, guiding mechanism is erected at underframe
On；Front and back detent mechanism is equipped with on front and back's guiding mechanism；The left and right that rig installing rack is arranged by left and right directions guides
Mechanism rack is located on body；Left and right detent mechanism is equipped with on the guiding mechanism of left and right；Rig is vertically arranged and is arranged on rig
On installing rack；
Described device positioning element includes location, top supporting cylinder, bottom location supporting cylinder and control valve group and pump
Stand；Location, top supporting cylinder is set to two pieces, and location, two pieces top supporting cylinder piston end sets up, cylinder body center
Symmetry is vertically fixedly mounted in added diagonal positions, and its piston end end is provided with support footstock；Location, bottom support hydraulic pressure
Cylinder is set to two pieces, positions that supporting cylinder piston end is down-set, location, cylinder body corresponding top supporting cylinder bottom two pieces
Position crisscross be vertically fixedly mounted in underframe diagonal positions, its piston end end is provided with support base；Control valve
Group and pumping plant be arranged on underframe or added on, the outfan of control valve group and pumping plant is respectively by fluid pressure line and top location
Support hydraulic cylinder, location, bottom supporting cylinder, driving hydraulic motor and steering hydraulic motor connect.
Scheme as a further improvement on the present invention, described body is by angle regulation positioning device and Guiding machine front and back
Structure connects.
Scheme as a further improvement on the present invention, described rig installing rack passes through angle regulation positioning device and left and right
Guiding mechanism connects.
Scheme as a further improvement on the present invention, described underframe and added be all frame structure.
Scheme as a further improvement on the present invention, described underframe and/or added frame structure two sides are provided with
Supporting rib stiffener arranged in a crossed manner.
Scheme as a further improvement on the present invention, described Working pedal is provided with seat.
Compared with prior art, this is arranged on owing to being provided with from mobile diagonal angle cross bearing roadway floor armature boring chassis
Added on underframe, top location supporting cylinder and control valve group and pumping plant are arranged on added, and location, bottom supports liquid
Cylinder pressure is arranged on underframe, is therefore manipulated by valve group and pumping plant makes top location supporting cylinder and location, bottom support
Hydraulic cylinder stretches out respectively, and the support footstock of location, top supporting cylinder acts against on top board, bottom positions supporting cylinder
Support base acts against and makes underframe form stable rigid support between back and base plate on base plate, rig during boring
Drilling rod pierce base plate produce counteracting force act on underframe by rig installing rack, body, underframe by active force by push up
Portion's location supporting cylinder and location, bottom supporting cylinder directly act on back and base plate, therefore need not at rig
Drilling rod above with pin or reversely air leg be supported on back to provide reverse holding power；Before being provided with due to workpiece
Rear guiding mechanism, front and back detent mechanism, left and right guiding mechanism, left and right detent mechanism, therefore will this most mobile diagonal angle cross bearing
Roadway floor armature boring chassis can realize pinpointing a position after having good positioning can complete the multiple rows of or operation in multiple row hole, i.e.
The rig all full lines in front and back's guiding mechanism and left and right guiding mechanism stroke range and the bore position of permutation can be realized
Carry out location boring；This is simple, easily operated from mobile from mobile diagonal angle cross bearing roadway floor armature boring trolley structure
Control, after completing boring, rockbolt installation can be carried out, hole and the speed of anchor pole, installation effectiveness height are installed, being adapted to fast
The requirement in rapid-result lane, uses the Quick mounting anchor rod of floor bolting when being particularly well-suited to administer Floor Heave in Roadway.
Accompanying drawing explanation
Fig. 1 is the three dimensional structure schematic diagram of the present invention.
In figure: 1, underframe, 11, drivewheel, 12, drive hydraulic motor, 13, deflecting roller, 14, Working pedal, 2, work portion
Part, 21, body, 22, front and back guiding mechanism, 23, front and back detent mechanism, 24, left and right guiding mechanism, 25, left and right detent mechanism,
26, rig installing rack, 27, rig, 3, added, 4, device positioning element, 41, location, top supporting cylinder, 42, location, bottom
Supporting cylinder, 43, control valve group and pumping plant.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, this includes underframe 1, workpiece from mobile diagonal angle cross bearing roadway floor armature boring chassis
2, added 3 and device positioning element 4.
Described added 3 are fixedly mounted on underframe 1, and underframe 1 bottom is provided with at least one deflecting roller 13 and at least includes
The drivewheel 11 that one group of coaxial direction is arranged, drivewheel 11 is connected with driving hydraulic motor 12, deflecting roller 13 and steering hydraulic horse
Reach connection, underframe 1 is additionally provided with Working pedal 14 and guidance panel.
Described workpiece 2 is arranged on underframe 1, including body 21, front and back guiding mechanism 22, front and back detent mechanism
23, left and right guiding mechanism 24, left and right detent mechanism 25, rig installing rack 26 and rig 27；Body 21 is arranged by fore-and-aft direction
Before and after guiding mechanism 22 be erected on underframe 1；Front and back detent mechanism 23 is equipped with on front and back's guiding mechanism 22, body 21
Can by front and back's guiding mechanism 22 and front and back detent mechanism 23 fore-and-aft direction on underframe 1 move and position；Rig installing rack
The 26 left and right guiding mechanisms 24 arranged by left and right directions are erected on body 21；Left and right detent mechanism 25 is equipped with in left and right
On guiding mechanism 24, rig installing rack 26 can pass through left and right guiding mechanism 24 and left and right detent mechanism 25 left and right on body 21
Direction is moved and is positioned；Rig 27 is vertically arranged and is arranged on rig installing rack 26.
Described device positioning element 4 includes location, top supporting cylinder 41, bottom location supporting cylinder 42 and control
Valve group processed and pumping plant 43；Support more firm on the diagonal supporting leg of support body owing to supporting cylinder is vertically arranged in, therefore push up
Location, portion supporting cylinder 41 is set to two pieces, and location, two pieces top supporting cylinder 41 piston end sets up, cylinder body center
Symmetry is vertically fixedly mounted in added 3 diagonal positions, and its piston end end is provided with support footstock；Location, bottom support hydraulic pressure
Cylinder 42 is set to two pieces, positions that supporting cylinder 42 piston end is down-set, location, cylinder body corresponding top supports liquid bottom two pieces
The position of cylinder pressure 41 is crisscross to be vertically fixedly mounted in underframe 1 diagonal positions, and its piston end end is provided with support base；
Control valve group and pumping plant 43 are arranged on underframe 1 or added 3, and the outfan of control valve group and pumping plant 43 passes through fluid pressure line respectively
It is connected with location, top supporting cylinder 41, location, bottom supporting cylinder 42, driving hydraulic motor 12 and steering hydraulic motor.
Operator are manipulated by valve group on Working pedal 14 guidance panel and pumping plant 43 controls to drive hydraulic pressure horse
Reach 12 actions and this is stayed in from mobile diagonal angle cross bearing roadway floor armature boring chassis the tunnel that need to carry out base plate boring
After on base plate, operation control valve group and pumping plant 43 make top location supporting cylinder 41 and location, bottom supporting cylinder 42 respectively
Stretch out, top location supporting cylinder 41 support footstock act against on top board, bottom location supporting cylinder 42 support at the bottom of
Seat acts against and makes underframe 1 form rigid support between back and base plate on base plate, then unclamps before and after's detent mechanism 23
With left and right detent mechanism 25, mobile body 21 to fore-and-aft direction needs behind the position of boring detent mechanism 23 before and after locking, then
Locking left and right detent mechanism 25 after needing the position of boring on mobile drill installing rack 26 to left and right directions, rig 27 is the most just to boring
Position, starts rig 27 and carries out holing, and during boring, the drilling rod of rig 27 pierces the counteracting force of base plate generation by boring
Machine installing rack 26, body 21 act on underframe 1, and active force is positioned by underframe 1 by top location supporting cylinder 41 and bottom
Supporting cylinder 42 directly acts on back and base plate；Be drilled first Kong Houke directly unclamp before and after's detent mechanism 23 or
Left and right detent mechanism 25 carries out the bore position on fore-and-aft direction or left and right directions and adjusts the drilling operation realizing a row or string.
In order to realize this equipment can on fore-and-aft direction non-fully the roadway floor of level carry out vertical drilling, Jin Erzeng
The suitability of university degree equipment, as a further improvement on the present invention scheme, described body 21 passes through angle regulation positioning device
It is connected with front and back guiding mechanism 22, makes the drilling rod of rig 27 be perpendicular in the longitudinal direction by regulation angle regulation positioning device
The roadway floor of non-fully level and lock, vertical drilling can be realized.
In order to realize this equipment can on left and right directions non-fully the roadway floor of level carry out vertical drilling, Jin Erzeng
The suitability of university degree equipment, as a further improvement on the present invention scheme, described rig installing rack 26 is fixed by angular adjustment
Position mechanism is connected with left and right guiding mechanism 24, makes the drilling rod of rig 27 be perpendicular in left and right by regulation angle regulation positioning device
The roadway floor of the non-fully level on direction also locks, and can realize vertical drilling.
In order to alleviate the overall weight of whole device so that moving, scheme as a further improvement on the present invention, described
Underframe 1 and added 3 be all frame structure.
In order to increase the integrated support intensity of this equipment, scheme as a further improvement on the present invention, described underframe 1
And/or the frame structure two sides of added 3 are provided with supporting rib stiffener arranged in a crossed manner.
In order to alleviate labor intensity of operating staff, scheme as a further improvement on the present invention, described Working pedal 14
It is provided with seat.
Originally from mobile diagonal angle cross bearing roadway floor armature boring chassis owing to being provided with added 3 be arranged on underframe 1,
Top location supporting cylinder 41 and control valve group and pumping plant 43 are arranged on added 3, and location, bottom supporting cylinder 42 is pacified
It is contained on underframe 1, is therefore manipulated by valve group and pumping plant 43 makes top location supporting cylinder 41 and location, bottom support
Hydraulic cylinder 42 stretches out respectively, and the support footstock of location, top supporting cylinder 41 acts against on top board, location, bottom support hydraulic pressure
The support base of cylinder 42 acts against and makes underframe 1 form stable rigid support between back and base plate on base plate, boring
The drilling rod of period rig 27 pierces the counteracting force of base plate generation and acts on underframe 1, underframe by rig installing rack 26, body 21
Active force is directly acted on back and the end by top location supporting cylinder 41 and location, bottom supporting cylinder 42 by 1
Plate, therefore need not be supported on back with pin or reverse air leg above the drilling rod of rig 27 reversely support to provide
Power；Owing to workpiece 2 is provided with before and after's guiding mechanism 22, front and back detent mechanism 23, left and right guiding mechanism 24, left and right detent mechanism
25, therefore can realize pinpointing a position after mobile diagonal angle cross bearing roadway floor armature boring chassis is had good positioning by this
Multiple rows of or the operation in multiple row hole can be completed, i.e. can realize rig 27 at front and back's guiding mechanism 22 and left and right guiding mechanism 24 row
All full lines and the bore position of permutation in the range of journey carry out location boring；This is from mobile diagonal angle cross bearing roadway floor anchor
Bar drill hole trolley structure is simple, easily operated to be controlled from mobile, can carry out rockbolt installation, hole and install anchor after completing boring
The speed of bar, installation effectiveness are high, are adapted to the requirement of Quick Road-Made, use the end when being particularly well-suited to administer Floor Heave in Roadway
The Quick mounting anchor rod of plate suspension roof support.
Claims (6)
1. from a mobile diagonal angle cross bearing roadway floor armature boring chassis, including rig (27), it is characterised in that also wrap
Include underframe (1), workpiece (2), added (3) and device positioning element (4)；
Described added (3) are fixedly mounted on underframe (1), and underframe (1) bottom is provided with at least one deflecting roller (13) and at least
The drivewheel (11) arranged including one group of coaxial direction, drivewheel (11) is connected with driving hydraulic motor (12), deflecting roller (13)
It is connected with steering hydraulic motor, underframe (1) is additionally provided with Working pedal (14) and guidance panel；
Described workpiece (2) is arranged on underframe (1), including body (21), front and back guiding mechanism (22), front and back localization machine
Structure (23), left and right guiding mechanism (24), left and right detent mechanism (25), rig installing rack (26) and rig (27)；Body (21) leads to
Cross guiding mechanism (22) before and after fore-and-aft direction is arranged to be erected on underframe (1)；Front and back detent mechanism (23) is equipped with front
On rear guiding mechanism (22)；The left and right guiding mechanism (24) that rig installing rack (26) is arranged by left and right directions is erected at body
(21) on；Left and right detent mechanism (25) is equipped with on left and right guiding mechanism (24)；Described rig (27) is vertically arranged peace
It is contained on rig installing rack (26)；
Described device positioning element (4) include top location supporting cylinder (41), bottom location supporting cylinder (42) and
Control valve group and pumping plant (43)；Location supporting cylinder, top (41) is set to two pieces, location, two pieces top supporting cylinder
(41) piston end sets up, cylinder body centrosymmetry is vertically fixedly mounted in added (3) diagonal positions, its piston end end
It is provided with support footstock；Location supporting cylinder, bottom (42) is set to two pieces, positions supporting cylinder (42) piston bottom two pieces
Hold that the position at location supporting cylinder, down-set, cylinder body corresponding top (41) is crisscross is vertically fixedly mounted on underframe (1)
In diagonal positions, its piston end end is provided with support base；Control valve group and pumping plant (43) are arranged on underframe (1) or added
(3), on, the outfan of control valve group and pumping plant (43) is respectively by fluid pressure line and location supporting cylinder, top (41), bottom
Location supporting cylinder (42), driving hydraulic motor (12) and steering hydraulic motor connect.
The most according to claim 1 from mobile diagonal angle cross bearing roadway floor armature boring chassis, it is characterised in that institute
The body (21) stated is connected with front and back's guiding mechanism (22) by angle regulation positioning device.
The most according to claim 1 and 2 from mobile diagonal angle cross bearing roadway floor armature boring chassis, its feature exists
In, described rig installing rack (26) is connected with left and right guiding mechanism (24) by angle regulation positioning device.
The most according to claim 3 from mobile diagonal angle cross bearing roadway floor armature boring chassis, it is characterised in that institute
Underframe (1) and added (3) stated are all frame structures.
The most according to claim 4 from mobile diagonal angle cross bearing roadway floor armature boring chassis, it is characterised in that institute
The underframe (1) stated and/or the frame structure two sides of added (3) are provided with supporting rib stiffener arranged in a crossed manner.
The most according to claim 1 from mobile diagonal angle cross bearing roadway floor armature boring chassis, it is characterised in that institute
The Working pedal (14) stated is provided with seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610544682.1A CN106089045A (en) | 2016-07-12 | 2016-07-12 | A kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610544682.1A CN106089045A (en) | 2016-07-12 | 2016-07-12 | A kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106089045A true CN106089045A (en) | 2016-11-09 |
Family
ID=57219662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610544682.1A Pending CN106089045A (en) | 2016-07-12 | 2016-07-12 | A kind of from mobile diagonal angle cross bearing roadway floor armature boring chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106089045A (en) |
-
2016
- 2016-07-12 CN CN201610544682.1A patent/CN106089045A/en active Pending
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20161109 |