CN101413387B - Tower rack type combined transmission oil pumping machine - Google Patents
Tower rack type combined transmission oil pumping machine Download PDFInfo
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- CN101413387B CN101413387B CN2008102388641A CN200810238864A CN101413387B CN 101413387 B CN101413387 B CN 101413387B CN 2008102388641 A CN2008102388641 A CN 2008102388641A CN 200810238864 A CN200810238864 A CN 200810238864A CN 101413387 B CN101413387 B CN 101413387B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 81
- 238000005086 pumping Methods 0.000 title claims abstract description 38
- 238000005183 dynamical system Methods 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The invention relates to a tower frame type combined driving oil extractor, which comprises a tower frame, a power system, a driving system, a control system, a balance weight box, a balance weight pulling rope, a driving rope, a polished rod eye and a guide wheel mechanism, wherein the driving system transmits power to a first transmission shaft after first reduction through a belt, a chain or combination of the belt and the chain, and drives a second transmission shaft after second reduction through a pair of gears, to drive the driving rope and the balance weight pulling rope which are rewound and fixed on a rope pulley, thereby a pumping rod and the balance weight box move up and down to complete operation of oil extraction. The driving system of the tower frame type combined driving oil extractor adopts the combined transmission form of gears and belts; the balance weight box adopts main and auxiliary multilevel adjustable balance weight; and the guide wheel is fixed on an operating platform through a rotating shaft, so that the tower frame type combined driving oil extractor has the advantages of simple structure, low cost, small number of fault points, convenient maintenance, suitability for various operating conditions of oil extraction, high transmission efficiency, low energy consumption and so on.
Description
Technical field
The present invention relates to a kind of oil extraction machinery and equipment, particularly relate to a kind of tower rack type combined transmission oil pumping machine.
Background technology
At present, the oil extraction machinery and equipment that the oil exploitation industry is used is varied, wherein ripe machine is a beam pumping unit, beam pumping unit is because the huge heaviness of its structure, energy consumption is big, efficient is low, safeguard that shortcomings such as adjusting inconvenience has begun progressively to be replaced by tower shelf type oil pumping machine, but the type of belt drive that present employed tower shelf type oil pumping machine still adopts reductor to slow down mostly, the motor of this oil pumper is connected with reductor through shaft coupling, gear wheel, head sheave and elevator wheel interfix, and be installed on day wheel shaft by bearing, it wheel shaft is fastening with day wheel shaft fastener.When oil pumping work, motor drives the reductor running by shaft coupling, pinion that links to each other with speed reducer output shaft and gear wheel engagement, thus make the forward and reverse regularly rotation of the head sheave that tightens together with gear wheel, drive sucker rod and pump.Because the drive gear mechanism manufacture difficulty is big in the reducer, cost is higher, and the running of meshing between gear that is in operation can produce very big noise, and the phenomenon of leakage of oil also often occurs in the reductor, safeguards more frequent.Therefore, be necessary to develop a kind of novel oil pumper, overcome above-mentioned weak point.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple in structure, and is with low cost, stable performance, wide accommodation, the tower rack type combined transmission oil pumping machine that noise is little.
Tower rack type combined transmission oil pumping machine of the present invention, comprise pylon, dynamical system, transmission system, control system, the counterweight case, the counterweight pull rope, drive rope and polished rod eye, wherein said dynamical system, transmission system, control system is installed on the operating platform of tower top, described transmission system comprises driving-belt, the belt lace sprocket wheel, big belt sprocket wheel, first power transmission shaft, pinion, gear wheel, second power transmission shaft and rope sheave, described dynamical system output is equipped with the belt lace sprocket wheel, described belt lace sprocket wheel drives big belt sprocket wheel by driving-belt, described big belt sprocket wheel is fixedly mounted on an end of first power transmission shaft, the other end of described first power transmission shaft fixedly is equipped with pinion, first power transmission shaft is installed on the power transmission shaft support by pair of bearings A, described pinion is meshed with gear wheel, described gear wheel is installed in an end of axle sleeve by dowel fixes, the other end of axle sleeve is installed with rope sheave, second power transmission shaft is equipped with by pair of bearings B in described axle sleeve inside, the two ends of described second power transmission shaft are separately fixed on the axle bed, described axle bed is fixed on the operating platform, described tower rack type combined transmission oil pumping machine also comprises directive wheel mechanism, described directive wheel mechanism comprises the directive wheel support, guide peg, rotating shaft, directive wheel anchor clamps and directive wheel, described directive wheel support is fixedly mounted on the side of operating platform near rope sheave by adjustable screw, described guide peg one end is installed on the directive wheel support by detachable screw, the coupling part of guide peg and directive wheel support is passed in described rotating shaft, rotating shaft one end is fixed in the guide peg, the other end is installed in the directive wheel support by bearing C, the free end of described guide peg is equipped with the directive wheel anchor clamps, on the directive wheel anchor clamps directive wheel is housed, have two groups of fixing holes on the described rope sheave, one end of described counterweight pull rope is fixed therein on one group of fixing hole, one end of described driving rope is fixed on another group fixing hole, described counterweight pull rope and driving rope are wrapped on the rope sheave in the other direction, the free end of described counterweight pull rope connects the counterweight case by polished rod eye D, the free end of described driving rope is walked around directive wheel, connects sucker rod by polished rod eye E.
Tower rack type combined transmission oil pumping machine of the present invention, wherein said belt lace sprocket wheel inboard is provided with sprocket F, and described big belt sprocket wheel inboard is provided with sprocket G, on described sprocket F and the G driving chain is housed.
Tower rack type combined transmission oil pumping machine of the present invention, wherein said counterweight case is provided with main ballast box and secondary counterweight, described secondary counterweight is articulated on the main ballast box by the hook that is installed in main ballast box both sides, and cement, sand and iron are equipped with in described main ballast box and secondary counterweight inside.
Tower rack type combined transmission oil pumping machine of the present invention, on the operating platform of wherein said directive wheel support both sides pull bar is housed respectively, described pull bar upper end is equipped with fixed pulley respectively, described directive wheel anchor clamps both sides are provided with a pair of drag hook, be fixed with wire rope on the described drag hook, the other end of described wire rope is walked around fixed pulley and is fixed on the operating platform.
Tower rack type combined transmission oil pumping machine of the present invention, wherein said dynamical system is a permagnetic synchronous motor, and the rated power of described permagnetic synchronous motor is 8 to 55kW, and rated speed is 120 to 300rpm, output torque is 450 to 4000Nm, and the speed reducing ratio i of transmission system is 10 to 25.
The transmission system that the difference of tower rack type combined transmission oil pumping machine of the present invention and prior art is tower rack type combined transmission oil pumping machine of the present invention is slowed down power by the combination of belt, chain or belt and chain and is passed to first power transmission shaft through the first order, and then pass through a pair of gear through second level deceleration drive second power transmission shaft, thereby the drive after-combustion is fixed on driving rope and counterweight pull rope on the rope sheave, sucker rod and balance ballast box is moved up and down finish oil extraction operation; The advantage that first order deceleration transmission is carried out in the combination of employing chain or belt and chain is to reduce power loss, keeps higher operating efficiency under the situation of heavy load, can reduce noise when using in the environment sensitive zone; The counterweight case of tower rack type combined transmission oil pumping machine of the present invention adopts the multistage adjustable counter balance of major and minor counterweight, adjusts counterweight according to the variation cooperation dynamical system of oil pumping amount, reaches the duty of low-consumption high-efficiency; The directive wheel of tower rack type combined transmission oil pumping machine of the present invention utilizes a turning cylinder to be fixed on the operating platform, is convenient to the staff and when well workover directive wheel is moved to both sides.
In sum, tower rack type combined transmission oil pumping machine of the present invention advantage compared with prior art is: simple in structure, cost is low, the trouble point is few, be convenient to safeguard, is applicable to various oil recovery working conditions, the transmission efficiency height, and energy consumption is little; In addition, easy to maintenance owing to having, just dynamical system, transmission system and control system can be installed on the pylon, also have splendid flood control, dustproof, theftproof performance.
Below in conjunction with accompanying drawing tower rack type combined transmission oil pumping machine of the present invention is described further.
Description of drawings
Fig. 1 is the structural representation of tower rack type combined transmission oil pumping machine of the present invention;
Fig. 2 is the structural representation of tower rack type combined transmission oil pumping machine transmission system of the present invention;
Fig. 3 is the structural representation of tower rack type combined transmission oil pumping machine directive wheel of the present invention mechanism;
Fig. 4 is the vertical view of Fig. 1.
The specific embodiment
Tower rack type combined transmission oil pumping machine as shown in Figure 1, comprise pylon 1, dynamical system 2, transmission system, control system 3, counterweight case 4, counterweight pull rope 5, drive rope 6 and polished rod eye, wherein dynamical system 2, transmission system, control system 3 is installed on the operating platform 8 at pylon 1 top, the staff can carry out control operation to whole tower rack type combined transmission oil pumping machine by the wireless or cable controller of control system 3 below pylon 1, counterweight case 4 is provided with main ballast box 31 and secondary counterweight 32, secondary counterweight 32 is articulated on the main ballast box 31 by the hook 33 that is installed in main ballast box 31 both sides, cement is equipped with in main ballast box 31 and secondary counterweight 32 inside, sand and iron, the staff can be according to the condition of loading of sucker rod 7 reality, the weight of adjustment ballast box 4, make sucker rod 7 and counterweight be in a kind of duty of relative equilibrium, thereby reduce the energy consumption of dynamical system 2 and transmission system.
As shown in Figures 2 and 3, transmission system comprises driving-belt 9, belt lace sprocket wheel 10, big belt sprocket wheel 11, first power transmission shaft 12, pinion 13, gear wheel 14, second power transmission shaft 15 and rope sheave 16, dynamical system 2 outputs are equipped with belt lace sprocket wheel 10, belt lace sprocket wheel 10 drives big belt sprocket wheel 11 by driving-belt 9, belt lace sprocket wheel 10 inboards are provided with sprocket F, big belt sprocket wheel 11 inboards are provided with sprocket G, driving chain 30 is housed on sprocket F and the G, less or working environment is to noise when responsive when load, can only select belt to carry out transmission, when load is big, can select the combination of chain or belt and chain to carry out transmission, it is non-slip when chain drive has guaranteed the oil pumper unloading, big belt sprocket wheel 11 is fixedly mounted on an end of first power transmission shaft 12, the other end of first power transmission shaft 12 fixedly is equipped with pinion 13, first power transmission shaft 12 is installed on the power transmission shaft support 17 by pair of bearings A, pinion 13 is meshed with gear wheel 14, gear wheel 14 is fixedly mounted on an end of axle sleeve 19 by pin 18, the other end of axle sleeve 19 is installed with rope sheave 16, second power transmission shaft 15 is equipped with by pair of bearings B in axle sleeve 19 inside, the two ends of second power transmission shaft 15 are separately fixed on the axle bed 20, and axle bed 20 is fixed on the operating platform 8.
As shown in Figure 3 and Figure 4, tower rack type combined transmission oil pumping machine also comprises directive wheel mechanism, directive wheel mechanism comprises directive wheel support 21, guide peg 22, rotating shaft 23, directive wheel anchor clamps 24 and directive wheel 25, directive wheel support 21 is fixedly mounted on the side of operating platform 8 near rope sheave 16 by adjustable screw 26, guide peg 22 1 ends are installed on the directive wheel support 21 by detachable screw 27, the staff can adjust the distance that guide peg 22 stretches out pylon 1 by the installation site that changes adjustable screw 26, make sucker rod 7 and well head centering, the coupling part of guide peg 22 and directive wheel support 21 is passed in rotating shaft 23, rotating shaft 23 1 ends are fixed in the guide peg 22, the other end is installed in the directive wheel support 21 by bearing C, the free end of guide peg 22 is equipped with directive wheel anchor clamps 24, directive wheel 25 is housed on the directive wheel anchor clamps 24, when well workover, sucker rod 7 need be dismantled from driving rope 6, then directive wheel 25 is put from well head, the staff only need unclamp detachable screw 27, it is moving that guide peg 22 just can be to swing sideward in the center with rotating shaft 23, drives directive wheel 25 and leave the well head center.
As Fig. 1, Fig. 2 and shown in Figure 4, have two groups of fixing holes 28 on the rope sheave 16,29, one end of counterweight pull rope 5 is fixed therein on one group of fixing hole 28, an end that drives rope 6 is fixed on another group fixing hole 29, counterweight pull rope 5 and driving rope 6 are wrapped on the rope sheave 16 in the other direction, the free end of counterweight pull rope 5 connects counterweight case 4 by polished rod eye D, the free end that drives rope 6 is walked around directive wheel 25, connect sucker rod 7 by polished rod eye E, on the operating platform 8 of directive wheel support 21 both sides pull bar 34 is housed respectively, pull bar 34 upper ends are equipped with fixed pulley 35 respectively, directive wheel anchor clamps 24 both sides are provided with a pair of drag hook 36, be fixed with wire rope 37 on the drag hook 36, the other end of wire rope 37 is walked around fixed pulley 35 and is fixed on the operating platform 8, wire rope 37 plays the effect that lifts guide peg 22, prevents that guide peg 22 from deforming greatly or under the situation of vibrations in load.
The dynamical system 2 of tower rack type combined transmission oil pumping machine of the present invention is selected permagnetic synchronous motor for use, and the rated power of motor is 8 to 55kW, and rated speed is 120 to 300rpm, and output torque is 450 to 4000Nm, and the speed reducing ratio i of transmission system is 10 to 25.The preferred permagnetic synchronous motor rated power of present embodiment 15kW, rated speed 200rpm, output torque 716Nm, the speed reducing ratio i of transmission system are 22.
The course of work of tower rack type combined transmission oil pumping machine of the present invention is summarized as follows: control system 3 drives permagnetic synchronous motor, drive big belt sprocket wheel 11 by belt lace sprocket wheel 10, thereby drive the pinion 13 coaxial with big belt sprocket wheel 11, pinion 13 drives the gear wheel 14 with its engagement, driving rope sheave 16 simultaneously drives counterweight pull rope fixed thereon 5 and drives rope 6, along with permagnetic synchronous motor alternately rotating clocklike, sucker rod 7 and balance ballast box 4 are pumped, when sucker rod 7 is descending, counterweight case 4 up storage of potential energy, when oil pumping stalk 7 is up, counterweight case 4 descending release potential energy, the energy consumption when reducing oil extraction operation significantly.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. tower rack type combined transmission oil pumping machine, comprise pylon (1), dynamical system (2), transmission system, control system (3), counterweight case (4), counterweight pull rope (5), drive rope (6) and polished rod eye, it is characterized in that: described dynamical system (2), transmission system, control system (3) is installed on the operating platform (8) at pylon (1) top, described transmission system comprises driving-belt (9), belt lace sprocket wheel (10), big belt sprocket wheel (11), first power transmission shaft (12), pinion (13), gear wheel (14), second power transmission shaft (15) and rope sheave (16), described dynamical system (2) output is equipped with belt lace sprocket wheel (10), described belt lace sprocket wheel (10) drives big belt sprocket wheel (11) by driving-belt (9), described big belt sprocket wheel (11) is fixedly mounted on an end of first power transmission shaft (12), the other end of described first power transmission shaft (12) fixedly is equipped with pinion (13), first power transmission shaft (12) is installed on the power transmission shaft support (17) by pair of bearings A, described pinion (13) is meshed with gear wheel (14), described gear wheel (14) is fixedly mounted on an end of axle sleeve (19) by pin (18), the other end of axle sleeve (19) is installed with rope sheave (16), described axle sleeve (19) is inner to be equipped with second power transmission shaft (15) by pair of bearings B, the two ends of described second power transmission shaft (15) are separately fixed on the axle bed (20), described axle bed (20) is fixed on the operating platform (8), described tower rack type combined transmission oil pumping machine also comprises directive wheel mechanism, described directive wheel mechanism comprises directive wheel support (21), guide peg (22), rotating shaft (23), directive wheel anchor clamps (24) and directive wheel (25), described directive wheel support (21) is fixedly mounted on the side of operating platform (8) near rope sheave (16) by adjustable screw (26), described guide peg (22) one ends are installed on the directive wheel support (21) by detachable screw (27), the coupling part of guide peg (22) and directive wheel support (21) is passed in described rotating shaft (23), rotating shaft (23) one ends are fixed in the guide peg (22), the other end is installed in the directive wheel support (21) by bearing C, the free end of described guide peg (22) is equipped with directive wheel anchor clamps (24), directive wheel (25) is housed on the directive wheel anchor clamps (24), have two groups of fixing holes (28 on the described rope sheave (16), 29), one end of described counterweight pull rope (5) is fixed therein on one group of fixing hole (28), one end of described driving rope (6) is fixed on another group fixing hole (29), described counterweight pull rope (5) and driving rope (6) are wrapped on the rope sheave (16) in the other direction, the free end of described counterweight pull rope (5) connects counterweight case (4) by polished rod eye D, the free end of described driving rope (6) is walked around directive wheel (25), connects sucker rod (7) by polished rod eye E.
2. tower rack type combined transmission oil pumping machine according to claim 1 is characterized in that: described belt lace sprocket wheel (10) inboard is provided with sprocket F, and described big belt sprocket wheel (11) inboard is provided with sprocket G, and driving chain (30) is housed on described sprocket F and the G.
3. tower rack type combined transmission oil pumping machine according to claim 2, it is characterized in that: described counterweight case (4) is provided with main ballast box (31) and secondary counterweight (32), described secondary counterweight (32) is articulated on the main ballast box (31) by the hook (33) that is installed in main ballast box (31) both sides, and cement, sand and iron are equipped with in described main ballast box (31) and secondary counterweight (32) inside.
4. tower rack type combined transmission oil pumping machine according to claim 3, it is characterized in that: on the operating platform (8) of described directive wheel support (21) both sides pull bar (34) is housed respectively, described pull bar (34) upper end is equipped with fixed pulley (35) respectively, described directive wheel anchor clamps (24) both sides are provided with a pair of drag hook (36), be fixed with wire rope (37) on the described drag hook (36), the other end of described wire rope (37) is walked around fixed pulley (35) and is fixed on the operating platform (8).
5. tower rack type combined transmission oil pumping machine according to claim 4, it is characterized in that: described dynamical system (2) is permagnetic synchronous motor, the rated power of described permagnetic synchronous motor is 8 to 55kW, rated speed is 120 to 300rpm, output torque is 450 to 4000Nm, and the speed reducing ratio i of transmission system is 10 to 25.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102388641A CN101413387B (en) | 2008-12-03 | 2008-12-03 | Tower rack type combined transmission oil pumping machine |
| US13/132,898 US8863826B2 (en) | 2008-12-03 | 2009-06-10 | Top-mounted digital-control tower pumping unit |
| PCT/CN2009/072200 WO2010063171A1 (en) | 2008-12-03 | 2009-06-10 | A top mounted tower type nc pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102388641A CN101413387B (en) | 2008-12-03 | 2008-12-03 | Tower rack type combined transmission oil pumping machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101413387A CN101413387A (en) | 2009-04-22 |
| CN101413387B true CN101413387B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102388641A Active CN101413387B (en) | 2008-12-03 | 2008-12-03 | Tower rack type combined transmission oil pumping machine |
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| CN (1) | CN101413387B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8863826B2 (en) * | 2008-12-03 | 2014-10-21 | International Business Alliance Management, Inc. | Top-mounted digital-control tower pumping unit |
| CN101881145B (en) * | 2010-07-15 | 2013-09-25 | 毛宏伟 | Tower frame type combined transmission numerically controlled pumping unit |
| CN103277070B (en) * | 2013-05-13 | 2015-11-04 | 贵州航天林泉电机有限公司 | A kind of roll-type pumping unit leads boots |
| WO2017124857A1 (en) * | 2016-01-22 | 2017-07-27 | 金成群 | Balanced tower oil pumping machine |
| WO2017133061A1 (en) * | 2016-02-02 | 2017-08-10 | 付尤东 | Oil extractor with intelligent integrated transmission |
| CN105863572B (en) * | 2016-05-10 | 2018-08-10 | 北京高和华泰节能环保科技有限公司 | Intelligent controlling system for beam-pumping unit and its oil pumping intelligent control method |
| CN110029966A (en) * | 2018-01-11 | 2019-07-19 | 中国石油天然气股份有限公司 | Balance adjusting device and oil pumping unit |
| CN108397163A (en) * | 2018-06-01 | 2018-08-14 | 付竞 | Automatic weighing tower shelf type oil pumping machine |
| CN116927724B (en) * | 2023-08-15 | 2024-01-30 | 大庆石油管理局有限公司 | Roller winding type intelligent tower type oil pumping machine |
| CN117211735B (en) * | 2023-09-12 | 2024-04-19 | 大庆石油管理局有限公司 | Tower type pumping unit balance weight slow-release device |
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| CN2352725Y (en) * | 1998-07-01 | 1999-12-08 | 郭彦苓 | Tower frame type well pump |
| WO2002068788A3 (en) * | 2001-02-26 | 2003-04-24 | Zhou Xiaoxi | Well pumping unit driven by linear motor |
| CN101046145A (en) * | 2007-04-28 | 2007-10-03 | 无锡德普莱石油机械有限公司 | Pumping unit |
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| CN201292824Y (en) * | 2008-12-03 | 2009-08-19 | 毛宏伟 | Column rack type group drive pumping unit |
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2008
- 2008-12-03 CN CN2008102388641A patent/CN101413387B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2352725Y (en) * | 1998-07-01 | 1999-12-08 | 郭彦苓 | Tower frame type well pump |
| WO2002068788A3 (en) * | 2001-02-26 | 2003-04-24 | Zhou Xiaoxi | Well pumping unit driven by linear motor |
| CN101139921A (en) * | 2006-09-04 | 2008-03-12 | 高智 | Guide-roller type long stroke energy-saving pumping unit |
| CN101046145A (en) * | 2007-04-28 | 2007-10-03 | 无锡德普莱石油机械有限公司 | Pumping unit |
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| CN101413387A (en) | 2009-04-22 |
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Effective date of registration: 20160912 Address after: Pixian 610000 Sichuan Province, Chengdu city Chengdu modern industrial area border road north Patentee after: SICHUAN MODERN CENTURY MECHANICAL AND ELECTRICAL Co.,Ltd. Address before: 102218 Beijing city Changping District Tiantongyuan 5 District 27 Building 1 unit 112 room Patentee before: Mao Hongwei Patentee before: Liu Bo |
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| CI01 | Publication of corrected invention patent application | ||
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Correction item: Patentee|Address|Patentee Correct: Mao Hongwei|102218 Beijing city Changping District Tiantongyuan 5 District 27 Building 1 unit 112 room|Liu Bo False: Sichuan Modern Century Mechanical and Electrical Company Limited|Pixian 610000 Sichuan Province, Chengdu city Chengdu modern industrial area border road north Number: 40 Volume: 32 |