CN105625966A - Roofbolter and gripper thereof - Google Patents
Roofbolter and gripper thereof Download PDFInfo
- Publication number
- CN105625966A CN105625966A CN201610178623.7A CN201610178623A CN105625966A CN 105625966 A CN105625966 A CN 105625966A CN 201610178623 A CN201610178623 A CN 201610178623A CN 105625966 A CN105625966 A CN 105625966A
- Authority
- CN
- China
- Prior art keywords
- hinged
- bracket
- clamper
- fixing support
- block
- 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
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- 238000000034 method Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 description 53
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
-
- 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)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a roofbolter and a gripper thereof. The gripper comprises a fixed support, a slide block support, at least three slide blocks and a drive device. The fixed support is provided with a hollow part. The slide block support is arranged on the fixed support in a rotatable mode. The slide blocks are all hinged to the slide block support and the fixed support. Wheels extending into the hollow part are arranged at the inner ends of the slide blocks respectively. The wheels of the slide blocks have an external common tangent circle. The drive device is used for driving the slide block support to rotate. In this way, according to the gripper of the roofbolter, a drill stem is located in the circle surrounded by the slide blocks of the gripper in the whole working process all the time, and when the drill stem inclines, because of the constraint of the slide block on the drill stem, the drill stem can return to the central position.
Description
Technical field
The present invention relates to drilling rig technique field, more specifically, it relates to a kind of jumbolter and clamper thereof.
Background technology
Clamper is the important parts in jumbolter, and it mainly plays the effect being clamped by drilling rod, preventing it from rotating when jumbolter works.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of jumbolter clamper in prior art. In prior art, the operation process of the clamper of jumbolter is:
When drilling rod 3 moves to the mid-way of two clamping orienting lugs 2, when there is not skew in drilling rod 3 and support 4, namely the center of circle of drilling rod 3 is when the center of the circle of two clamping orienting lug 2 envelopes, make the action simultaneously of two clamping cylinders 1, promote clamping orienting lug 2 to move to centre simultaneously, thus make clamping orienting lug 2 hold drilling rod 3 tightly, thus play the clamping effect to drilling rod 3. But, when in stratum, the cobble of stochastic distribution makes drilling rod 3 that deflection occur in due to the deadweight of drilling rod 3 or drilling process, drilling rod 3 will depart from the center of support 4, namely the center of circle of drilling rod 3 is no longer positioned at the center of the circle of two clamping orienting lug 2 envelopes, and then causing clamping orienting lug 2 cannot hold drilling rod 3 tightly, final whole clamper loses the clamping effect to drilling rod.
Therefore, how solving clamper of the prior art, when drilling rod departs from the center of support, the technical problem that drilling rod cannot be clamped by clamper, becomes those skilled in the art's important technological problems to be solved.
Summary of the invention
In view of this, it is an object of the invention to provide the clamper of a kind of jumbolter, drilling rod is arranged in the circle of multiple slide block envelopes of clamper all the time in whole working process, when drilling rod generation deflection, owing to slide block is to the constraint of drilling rod, drilling rod can be made to recenter. The present invention also aims to provide a kind of jumbolter comprising above-mentioned clamper.
A kind of clamper provided by the invention, comprising:
Fixing support, described fixing support is provided with hollow portion;
Slider bracket, described slider bracket is arranged on described fixing support rotationally, and described fixing support is provided with the spacing structure of constraint described slider bracket translation;
Slip block, described slip block is at least three, and the block that slides described in each is all hinged by the first hinge and the first hinged hole and the described slider bracket that match with described first hinge, the block that slides described in each is all hinged by the 2nd hinge and the 2nd hinged hole and the described fixing support that match with described 2nd hinge, and described 2nd hinged hole is bar hole, so that described 2nd hinged axle can produce relative rotation and relative movement with described 2nd hinged hole; Slide described in each the inner of block is equipped with the roller stretching to described hollow portion, and the roller of the block that slides described in each exists outer common tangent circle;
Drive unit, produces for driving described slider bracket to rotate.
Preferably, described slip block is three.
Preferably, described fixing support comprises upper frame and lower frame, described upper frame is fixedly connected with by connection section with described lower frame, and there is gap between described upper frame and described lower frame, to be hinged between described upper frame and described lower frame by described slip block.
Preferably, described drive unit is hydro-cylinder, and end and the described fixing support of the cylinder seat of described hydro-cylinder are hinged, and end and the described slider bracket of piston rod are hinged.
Preferably, also comprising the upper cover body being removably connected to described upper frame and be removably connected to the lower cover of described lower frame, described upper cover body and described lower cover are equipped with the hollow part corresponding with described support bracket fastened hollow portion.
Preferably, described upper cover body and described lower cover are connected by screw respectively on described upper frame and described lower frame.
Preferably, described slider bracket comprises upper bracket and lower bracket, described upper bracket is fixedly connected with by connection section with described support, and there is gap between described upper bracket and described support, to be hinged between described upper bracket and described lower bracket by described slip block.
A kind of jumbolter provided by the invention, comprises as above clamper described in arbitrary item.
In technical scheme provided by the invention, slider bracket is installed in rotation on fixing support, and described fixing support is provided with the spacing structure of constraint described slider bracket translation, each slip block is hinged by the hinged hole of the first hinge and first and slider bracket, and each slip block is all hinged by the 2nd hinge and the 2nd hinged hole and fixing support. Owing to the 2nd hinged hole is bar hole, when slider bracket relative to fix support rotate time, the 2nd hinge can produce relative rotation and along the movement of bar hole in the 2nd hinged hole. When drive unit drives slider bracket to produce relative rotation on fixing support, the roller of multiple slip block extend out to support bracket fastened hollow portion simultaneously or retracts by this hollow portion. Such as, when drive unit drives slider bracket to rotate, when each slip block is regained, the circular diameter of multiple slip block envelope is maximum, and now drilling rod can freely slide up and down in this circle, completes the bore operation of drilling rod. When needs clamp drilling rod, drive unit drives slider bracket to rotate, and each slip block is stretched out, and the circular diameter of multiple slip block envelope diminishes gradually, finally clamps drilling rod. So arranging, technical scheme provided by the invention, drilling rod is arranged in by the circle of multiple slip block envelope in whole working process all the time, when drilling rod generation deflection, owing to slip block is to the constraint of drilling rod, drilling rod can be made to recenter. In addition, by regulating stretching out and the drilling rod retracted and can clamp different diameter of drive unit. And compared with original scheme, the present invention only need to use a drive unit, than prior art decreases one, can effectively reduce costs. Drilling rod can either be played centralizing function with a set of clamper, can reach again the effect of clamping, greatly reduce the complexity of clamper by last.
Present invention also offers a kind of jumbolter, comprise clamper as above. So arranging, jumbolter provided by the invention, drilling rod is arranged in the circle of multiple slide block envelopes of clamper all the time in whole working process, when drilling rod generation deflection, owing to slide block is to the constraint of drilling rod, drilling rod can be made to recenter.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of jumbolter clamper in prior art;
Fig. 2 is the assembling schematic diagram of clamper in the specific embodiment of the invention;
Fig. 3 be in the specific embodiment of the invention clamper dismantle upper frame time assembling schematic diagram;
Fig. 4 is the decomposing schematic representation of clamper in the specific embodiment of the invention;
Fig. 5 is the decomposing schematic representation of block of sliding in the specific embodiment of the invention;
Fig. 6 is the hydro-cylinder of clamper in specific embodiment of the invention schematic diagram when being in retracted mode;
The hydro-cylinder that Fig. 7 is clamper in the specific embodiment of the invention is in schematic diagram when stretching out state;
In Fig. 2-Fig. 7:
Fixing support--11, slider bracket--12, slip block--13, hydro-cylinder--14, the hinged hole 17 of roller--15, first hinge--16, first, the 2nd hinge 18, the 2nd hinged hole 19, upper frame 20, lower frame 21, upper cover body 22, lower cover 23.
Embodiment
This embodiment provides the clamper of a kind of jumbolter, and drilling rod is arranged in the circle of multiple slide block envelopes of clamper all the time in whole working process, when drilling rod generation deflection, owing to slide block is to the constraint of drilling rod, drilling rod can be made to recenter. This embodiment also provides a kind of jumbolter comprising above-mentioned clamper.
Hereinafter, with reference to accompanying drawing, embodiment is described. In addition, summary of the invention described in claim is not played any restriction effect by the embodiment shown in below. In addition, below, to be not limited to the solution as the invention described in claim necessary for whole contents of formation represented by embodiment.
Refer to Fig. 2-Fig. 7, a kind of clamper that this embodiment provides, comprise fixing support 11, slider bracket 12, slip block 13 and drive unit.
Wherein, fixing support 11 is provided with hollow portion, and slider bracket is arranged on fixing support 11 rotationally, and slider bracket 12 is also provided with the hollow portion corresponding with the hollow portion of fixing support 11, and fixing support 11 is provided with the spacing structure of constraint slider bracket translation. This spacing structure can rib structure for being arranged on fixing support 11, this rib structure contacts with the periphery of slider bracket 12, and to limit the translation of slider bracket 12, and under the gear of rib structure puts effect, slider bracket can only produce to rotate. Certainly, this spacing structure also can be other structure, such as, it is possible to is the annular protrusion that is arranged between fixing support 11 and slider bracket 12 and annular recesses, annular protrusion and annular recesses are combined together and play limit guide rail effect, so that slider bracket 12 can only produce to rotate.
For driving, slider bracket 12 rotates forward or backwards drive unit on fixing support 11. In this embodiment, drive unit can be specially hydro-cylinder 14, and cylinder seat one end of hydro-cylinder 14 can be hinged on fixing support 11, and end and the slider bracket 12 of piston rod are hinged. , it is possible to be the drive unit of alternate manner, such as, certainly the drive unit that motor and feed screw nut or cam link etc. are formed, only needs to drive slider bracket to carry out rotating on fixing support 11.
Slip block 13 is at least three, and for convenience of description, ensuing disclosure will launch to introduce for three. Three slip blocks 13 can be evenly distributed on the surrounding of slider bracket 12, and each slip block 13 is all hinged with slider bracket by the first hinge 16 and the first hinged hole 17 of matching with the first hinge 16, each slip block 13 is all hinged with fixing support 11 by the 2nd hinge 18 and the 2nd hinged hole 19 matched with the 2nd hinge 18, and the 2nd hinged hole 19 be bar hole so that the 2nd hinged axle can produce relative rotation and relative movement with the 2nd hinged hole 19.
The inner of each slip block 13 is equipped with the roller 15 stretching to hollow portion, and the roller 15 of each slip block 13 exists outer common tangent circle.
It should be noted that, the circle of each roller 15 envelope above-mentioned is above-mentioned outer common tangent circle, when hydro-cylinder 14 drives slider bracket 12 to rotate on fixing support 11, each slip block 13 can produce opposing oscillatory relative to slider bracket 12, when roller 15 swings to the center portion in hollow portion, the envelope circular diameter of three roller 15 formation diminishes, and when swinging to the center position away from hollow portion, the envelope circular diameter of three roller 15 formation becomes big.
Such as, as shown in Figure 6, when the piston rod of hydro-cylinder 14 is retracted, driving slider bracket to rotate, each slip block 13 is regained, the circular diameter of multiple slip block 13 envelope is maximum, and now drilling rod can freely slide up and down in this circle, completes the bore operation of drilling rod. When needs clamp drilling rod, hydro-cylinder 14 drives slider bracket to rotate, and each slip block 13 is stretched out, and the circular diameter of multiple slip block 13 envelope diminishes gradually, finally clamps drilling rod, as shown in Figure 7.
So arranging, the technical scheme that this embodiment provides, drilling rod is arranged in by the circle of multiple slip block 13 envelope in whole working process all the time, when drilling rod generation deflection, owing to slip block 13 is to the constraint of drilling rod, drilling rod can be made to recenter. In addition, stretching out and the drilling rod retracted and can clamp different diameter by regulator solution cylinder pressure 14. And compared with original scheme, this embodiment only need to use a drive unit, than prior art decreases one, can effectively reduce costs. Drilling rod can either be played centralizing function with a set of clamper, can reach again the effect of clamping, greatly reduce the complexity of clamper by last.
It should be noted that, the quantity of the block 13 that slides in this embodiment also can be four, five etc., and multiple slip block 13 is preferably uniformly distributed taking the center in hollow portion as the center of circle, like this, when drilling rod is clamped by multiple slip block 13, can not there is deflection in uniform force.
In the preferred version of this embodiment, fixing support 11 can comprise upper frame 20 and lower frame 21, upper frame 20 is fixedly connected with by connection section with lower frame 21, and there is gap between upper frame 20 and lower frame 21, to be hinged between upper frame 20 and lower frame 21 by slip block 13.
Slider bracket also can comprise upper bracket and lower bracket, and upper bracket is fixedly connected with by connection section with support, and there is gap between upper bracket and support, to be hinged between upper bracket and lower bracket by slip block 13.
So arranging, the clamper assembling that this embodiment provides is simple, compact construction, and, slip block 13 is assembled together with fixing support 11 and slider bracket 12, has good stability.
In addition, in order to prevent slider bracket from departing from from fixing support 11, further, can also comprising the upper cover body 22 being removably connected to upper frame 20 and the lower cover 23 being removably connected to lower frame 21, upper cover body 22 and lower cover 23 are equipped with the hollow part corresponding with the hollow portion of fixing support 11. Upper cover body 22 and lower cover 23 can be connected by screw respectively on upper frame 20 and lower frame 21.
So arrange, after slider bracket 12 is installed on fixing support 11, upper cover body 22 and lower cover 23 are mounted on fixing support 11, it is possible to prevent the problem that slider bracket 12 comes off from the both sides up and down of fixing support 11 again.
This embodiment additionally provides a kind of jumbolter, comprises as above clamper described in arbitrary item. So arranging, the jumbolter that this embodiment provides, drilling rod is arranged in the circle of multiple slide block envelopes of clamper all the time in whole working process, when drilling rod generation deflection, owing to slide block is to the constraint of drilling rod, drilling rod can be made to recenter. The derivation of the useful effect that the derivation of this useful effect and above-mentioned clamper bring is substantially similar, therefore repeats no more herein.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are enable to realize or use the present invention. To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention can not be limited in these embodiments shown in this article, but be met the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a clamper, it is characterised in that, comprising:
Fixing support, described fixing support is provided with hollow portion;
Slider bracket, described slider bracket is arranged on described fixing support rotationally, and described fixing support is provided with the spacing structure of constraint described slider bracket translation;
Slip block, described slip block is at least three, and the block that slides described in each is all hinged by the first hinge and the first hinged hole and the described slider bracket that match with described first hinge, the block that slides described in each is all hinged by the 2nd hinge and the 2nd hinged hole and the described fixing support that match with described 2nd hinge, and described 2nd hinged hole is bar hole, so that described 2nd hinged axle can produce relative rotation and relative movement with described 2nd hinged hole; Slide described in each the inner of block is equipped with the roller stretching to described hollow portion, and the roller of the block that slides described in each exists outer common tangent circle;
Drive unit, produces for driving described slider bracket to rotate.
2. clamper as claimed in claim 1, it is characterised in that, described slip block is three.
3. clamper as claimed in claim 1, it is characterized in that, described fixing support comprises upper frame and lower frame, described upper frame is fixedly connected with by connection section with described lower frame, and there is gap between described upper frame and described lower frame, so that described slip block is hinged between described upper frame and described lower frame.
4. clamper as claimed in claim 1, it is characterised in that, described drive unit is hydro-cylinder, and end and the described fixing support of the cylinder seat of described hydro-cylinder are hinged, and end and the described slider bracket of piston rod are hinged.
5. clamper as claimed in claim 3, it is characterized in that, also comprising the upper cover body being removably connected to described upper frame and be removably connected to the lower cover of described lower frame, described upper cover body and described lower cover are equipped with the hollow part corresponding with described support bracket fastened hollow portion.
6. clamper as claimed in claim 5, it is characterised in that, described upper cover body and described lower cover are connected by screw respectively on described upper frame and described lower frame.
7. clamper as claimed in claim 1, it is characterized in that, described slider bracket comprises upper bracket and lower bracket, described upper bracket is fixedly connected with by connection section with described support, and there is gap between described upper bracket and described support, so that described slip block is hinged between described upper bracket and described lower bracket.
8. a jumbolter, it is characterised in that, comprise the clamper as described in item as arbitrary in claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178623.7A CN105625966A (en) | 2016-03-25 | 2016-03-25 | Roofbolter and gripper thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178623.7A CN105625966A (en) | 2016-03-25 | 2016-03-25 | Roofbolter and gripper thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105625966A true CN105625966A (en) | 2016-06-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610178623.7A Pending CN105625966A (en) | 2016-03-25 | 2016-03-25 | Roofbolter and gripper thereof |
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| Country | Link |
|---|---|
| CN (1) | CN105625966A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316868A (en) * | 2017-01-16 | 2018-07-24 | 新疆如通石油技术服务有限公司 | Mouse-hold tongs |
| WO2020041587A1 (en) * | 2018-08-24 | 2020-02-27 | InterOcean Systems, LLC | Rotary cam operated release mechanism |
| CN112682079A (en) * | 2021-01-19 | 2021-04-20 | 中国煤炭科工集团太原研究院有限公司 | Anchor rod and anchor cable drill frame suitable for thin coal seam |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3698266A (en) * | 1970-04-28 | 1972-10-17 | Atlas Copco Ab | Pipe wrench |
| CN101397892A (en) * | 2008-11-11 | 2009-04-01 | 四川劳玛斯特高胜石油钻采设备有限公司 | Iron driller |
| CN202544776U (en) * | 2012-04-09 | 2012-11-21 | 长沙矿山研究院有限责任公司 | Hydraulic rod centralizer of raise boring machine |
| CN104117896A (en) * | 2014-07-27 | 2014-10-29 | 成都高普石油工程技术有限公司 | Cladding-type petroleum drill pipe surface rust removing device |
| CN204002640U (en) * | 2014-08-25 | 2014-12-10 | 北京南车时代机车车辆机械有限公司 | A kind of rig and clamp unscrewing device thereof |
| CN104895514A (en) * | 2015-06-24 | 2015-09-09 | 青岛杰瑞工控技术有限公司 | Oil rig racking platform string discharge manipulator |
| CN105064935A (en) * | 2015-07-28 | 2015-11-18 | 四川宏华石油设备有限公司 | Tubular column guiding device and iron roughneck comprising same |
| CN205532397U (en) * | 2016-03-25 | 2016-08-31 | 北京中车重工机械有限公司 | Roofbolter and holder thereof |
-
2016
- 2016-03-25 CN CN201610178623.7A patent/CN105625966A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3698266A (en) * | 1970-04-28 | 1972-10-17 | Atlas Copco Ab | Pipe wrench |
| CN101397892A (en) * | 2008-11-11 | 2009-04-01 | 四川劳玛斯特高胜石油钻采设备有限公司 | Iron driller |
| CN202544776U (en) * | 2012-04-09 | 2012-11-21 | 长沙矿山研究院有限责任公司 | Hydraulic rod centralizer of raise boring machine |
| CN104117896A (en) * | 2014-07-27 | 2014-10-29 | 成都高普石油工程技术有限公司 | Cladding-type petroleum drill pipe surface rust removing device |
| CN204002640U (en) * | 2014-08-25 | 2014-12-10 | 北京南车时代机车车辆机械有限公司 | A kind of rig and clamp unscrewing device thereof |
| CN104895514A (en) * | 2015-06-24 | 2015-09-09 | 青岛杰瑞工控技术有限公司 | Oil rig racking platform string discharge manipulator |
| CN105064935A (en) * | 2015-07-28 | 2015-11-18 | 四川宏华石油设备有限公司 | Tubular column guiding device and iron roughneck comprising same |
| CN205532397U (en) * | 2016-03-25 | 2016-08-31 | 北京中车重工机械有限公司 | Roofbolter and holder thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316868A (en) * | 2017-01-16 | 2018-07-24 | 新疆如通石油技术服务有限公司 | Mouse-hold tongs |
| WO2020041587A1 (en) * | 2018-08-24 | 2020-02-27 | InterOcean Systems, LLC | Rotary cam operated release mechanism |
| CN112682079A (en) * | 2021-01-19 | 2021-04-20 | 中国煤炭科工集团太原研究院有限公司 | Anchor rod and anchor cable drill frame suitable for thin coal seam |
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| CB02 | Change of applicant information |
Address after: 102249 Beijing ChangPing Railway Station, west of Changping District, 500 meters Applicant after: Beijing CRRC Heavy Industry Mechanics Co., Ltd. Address before: 102249 Beijing ChangPing Railway Station, west of Changping District, 500 meters Applicant before: Beijing CSR Times Heavy Industry Machinery Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
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| RJ01 | Rejection of invention patent application after publication |