CN101881145A - Tower frame type combined transmission numerically controlled pumping unit - Google Patents
Tower frame type combined transmission numerically controlled pumping unit Download PDFInfo
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- CN101881145A CN101881145A CN2010102273109A CN201010227310A CN101881145A CN 101881145 A CN101881145 A CN 101881145A CN 2010102273109 A CN2010102273109 A CN 2010102273109A CN 201010227310 A CN201010227310 A CN 201010227310A CN 101881145 A CN101881145 A CN 101881145A
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Abstract
The invention provides a tower frame type combined transmission numerically controlled pumping unit, which relates to a mechanical device for oil exploitation. The invention aims to provide a tower frame type pumping unit which enables transmission devices to be more balanced and symmetrical on a platform, thoroughly solves the problem of sealing of a gear case, enables a chain to have longer service life, lower noise and more stable performance, and is convenient for shifting and repairing wells. The pumping unit of the invention comprises a main tower frame, a power system, a transmission system, a control system, a balance weight box, a balance weight traction rope, a rope wheel, a driving rope and a rope hanger, wherein the transmission system comprises a small gear, a big gear, a first transmission shaft, a small chain wheel, a big chain wheel and a second transmission shaft; the small gear is fixedly installed on the output shaft of the power system; the first transmission shaft is installed on an operating platform through a shaft seat; the big gear and the small chain wheel are respectively fixedly installed at two ends of the first transmission shaft; the big chain wheel and the rope wheel are oppositely and fixedly installed on the second transmission shaft; the small chain wheel is in transmission connection with the big chain wheel through a chain; and the second transmission shaft is fixed at one side of the operating platform through a rope wheel supporting device.
Description
Technical field
The present invention relates to a kind of oil extraction machinery and equipment, particularly relate to a kind of tower shelf type oil pumping machine.
Background technology
At present, in field of petroleum exploitation, tower shelf type oil pumping machine is because it is simple in structure, with low cost, advantages such as energy consumption is little are progressively replacing beam pumping unit, for example application number is that 200810238864.1 Chinese invention patent application discloses a kind of tower rack type combined transmission oil pumping machine, the transmission system of this oil pumper is passed through belt, the combination of chain or belt and chain is slowed down power and is passed to first power transmission shaft through the first order, and then pass through a pair of gear and take turns through second level deceleration strip running rope, 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.Yet this oil pumper is because also there are several problems in its structure, one, the gear-box that is provided with outside a pair of gear in slowing down in the second level, because gear wheel is fixedly mounted on the axle sleeve of rotation, pinion is fixed on first power transmission shaft of rotation, therefore the sealing to gear-box has caused very big difficulty, and lubricating fluid very easily oozes out from the slit between gear and gear-box, axle sleeve and the gear-box; Two, power output and the loading section both sides of operating platform that can only be placed in make operating platform not steady, are in operation very easily to cause vibration and rock, and influence the application life of equipment; Three, when needs are adjusted the rope sheave position, must move first power transmission shaft and second power transmission shaft simultaneously, move trouble, influence production efficiency.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of transmission device on platform more balanced, symmetrical, thoroughly solved the gear-box sealing a difficult problem, make the chain life-span longer, noise is littler, performance is more stable, the tower frame type combined transmission numerically controlled pumping unit of the well workover of being convenient to be shifted.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, comprise the king-tower frame, dynamical system, transmission system, control system, the counterweight case, the counterweight pull rope, rope sheave, drive rope and polished rod eye, described dynamical system, transmission system, control system and rope sheave are installed on the operating platform of king-tower top of the trellis, described control system is connected with dynamical system, the commutation position and the rotating speed of control system control dynamical system, described dynamical system is in transmission connection by transmission system and rope sheave, wherein said transmission system comprises pinion, gear wheel, first power transmission shaft, minor sprocket, the hinge wheel and second power transmission shaft, described pinion is fixedly mounted on the output shaft of dynamical system, described first power transmission shaft is installed on the operating platform by axle bed, described gear wheel and minor sprocket are fixedly mounted on the two ends of first power transmission shaft respectively, described gear wheel and pinion are meshed, described hinge wheel and rope sheave relative fixed are installed on second power transmission shaft, described minor sprocket is connected by chain drive with hinge wheel, described second power transmission shaft is fixed on operating platform one side by sheave support device, have the plurality of fixed hole 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 A, the free end of described driving rope connects sucker rod by polished rod eye B
Described pinion and gear wheel are equipped with gear cover outward, described gear cover comprises upper box, lower box and sealing shroud, described lower box is fixedly connected on the operating platform, described upper box is fixedly mounted on lower box top, the following joint portion of upper box is provided with slot, insert in the middle of the described slot the last joint portion of lower box, on described, lower box is with big, the corresponding rear portion of pinion offers the axis hole that is suitable for holding first power transmission shaft and power output shaft, be set with erection loop on the front end outer wall of described sealing shroud, described erection loop is by bolt and last, the rear portion of lower box is fixedly connected, erection loop and last, also be provided with sealing ring between the lower box, the fore-end of described two sealing shrouds passes two axis holes respectively and stretches into, in the lower box, the rear end of each sealing shroud is set with adpting flange, described two adpting flanges are fixedlyed connected with the dynamical system shell with axle bed respectively by bolt, also be provided with annular boss on the rear end face of each adpting flange, described two annular boss stretch into respectively in axle bed and the dynamical system shell, described upper box top is provided with oil filler point, and described lower box bottom is provided with drain oil.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, before wherein said rope sheave is divided into vertically, back two halves, before described hinge wheel is fixedly mounted on, between the back two halves, described rope sheave is installed on second power transmission shaft by bearing, the two ends of described second power transmission shaft are installed in the sheave support device upper end by sliding shaft base, described sliding shaft base can slide along the sheave support device upper surface, locate by the positioning bolt on it, described rope sheave wheel rim stretches out operating platform, and its outermost end edge is M with the beeline of king-tower frame in the horizontal direction, and M is not less than 700mm.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, the diameter of wherein said hinge wheel is less than the rope sheave diameter.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, the ratio of the diameter d of the diameter D of wherein said rope sheave and driving rope is greater than 70.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, wherein said rope sheave and hinge wheel are fixedly mounted on the axle sleeve, described axle sleeve is installed on second power transmission shaft by bearing, the two ends of described second power transmission shaft are installed in the sheave support device upper end by fixing axle bed, directive wheel mechanism also is housed on the described operating platform, described directive wheel mechanism comprises the directive wheel support, directive wheel anchor clamps and directive wheel, described directive wheel support is installed on the operating platform by regulating bolt, described directive wheel anchor clamps are installed on the directive wheel support by a rotating pin and some hinged bolts, on the directive wheel anchor clamps directive wheel is housed, described directive wheel outermost end edge is N with the beeline at rope sheave outermost end edge in the horizontal direction, N is not less than 700mm, the part of described driving rope between rope sheave and directive wheel is α with the angle of vertical direction, and α is not less than 45 degree.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, the diameter D ' of wherein said rope sheave and the diameter d that drives rope ' ratio greater than 70.
Tower frame type combined transmission numerically controlled pumping unit of the present invention, a side of wherein said king-tower frame also is provided with the secondary tower frame, is bolted to connection between described secondary tower frame and the king-tower frame, and described operating platform is arranged on the top of secondary tower frame.
Tower frame type combined transmission numerically controlled pumping unit difference from prior art of the present invention is that tower frame type combined transmission numerically controlled pumping unit of the present invention adopts a pair of gear to slow down as the first order and sends power to first power transmission shaft, and then slow down power transmission to rope sheave as the second level by pair of sprocket, 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; Make gear cover link together the easier processing of sealing problem by gear as first order reduction gearing mechanism with fixtures such as axle bed, dynamical system shells; This kind of drive of the present invention makes power output and the easier operating platform center that concentrates on of loading section, makes operating platform more stable, is difficult for producing vibration and rocking; When needs are adjusted the rope sheave position, only need loosen chain and move second power transmission shaft and get final product, need not whole mobile transmission system.
Rope sheave is divided into forward and backward two halves in the tower frame type combined transmission numerically controlled pumping unit of the present invention, conveniently hinge wheel is fixedly mounted on the rope sheave, even the diameter of hinge wheel is less than the rope sheave diameter; The outermost end edge of rope sheave is not less than 700mm with the beeline of king-tower frame in the horizontal direction, guaranteed that the distance between king-tower frame and well head is not less than 700mm, satisfied the safe distance that workover rig uses, increased the rope sheave diameter simultaneously, the ratio that makes wire rope bending diameter and wirerope diameter is greater than 70, thus the application life of having improved wire rope.
The directive wheel mechanism of swinging of installing in the tower frame type combined transmission numerically controlled pumping unit of the present invention, dwindling under the prerequisite of rope sheave diameter with the saving cost, make directive wheel outermost end edge be not less than 700mm with the beeline at rope sheave outermost end edge in the horizontal direction, reach the safe distance that workover rig uses equally, the angle that drives the part of rope between rope sheave and directive wheel and vertical direction is also to be in order to reduce the flexural fatigue loss of wire rope, the application life of improving wire rope less than 45 degree.
Below in conjunction with accompanying drawing tower frame type combined transmission numerically controlled pumping unit of the present invention is described further.
Description of drawings
Fig. 1 is the front view of first kind of embodiment of tower frame type combined transmission numerically controlled pumping unit of the present invention;
Fig. 2 is the vertical view of first kind of embodiment of tower frame type combined transmission numerically controlled pumping unit of the present invention;
Fig. 3 a is the front view of tower frame type combined transmission numerically controlled pumping unit middle gear case of the present invention;
Fig. 3 b is an A-A direction sectional view among Fig. 3 a;
Fig. 3 c is a B-B direction sectional view among Fig. 3 a;
Fig. 4 a is the assembling schematic diagram of tower frame type combined transmission numerically controlled pumping unit middle gear case of the present invention;
Fig. 4 b is the partial enlarged drawing at C place among Fig. 4 a;
Fig. 5 is the front view (operating platform is with top) of second kind of embodiment of tower frame type combined transmission numerically controlled pumping unit of the present invention;
Fig. 6 is the vertical view of second kind of embodiment of tower frame type combined transmission numerically controlled pumping unit of the present invention.
The specific embodiment
As depicted in figs. 1 and 2, first kind of embodiment of tower frame type combined transmission numerically controlled pumping unit of the present invention comprises king-tower frame 1, secondary tower frame 2, dynamical system 3, transmission system, control system, counterweight case 4, counterweight pull rope 5, rope sheave 6, drive rope 7 and polished rod eye, dynamical system 3, transmission system, control system and rope sheave 6 are installed on the operating platform 8 at king-tower frame 1 and secondary tower frame 2 tops, be bolted to connection together between king-tower frame 1 and the secondary tower frame 2, control system is connected with dynamical system 3, the commutation position and the rotating speed of control system control dynamical system 3, transmission system comprises pinion 9, gear wheel 10, first power transmission shaft 11, minor sprocket 12, the hinge wheel 13 and second power transmission shaft 14, pinion 9 is fixedly mounted on the output shaft of dynamical system 3, first power transmission shaft 11 is installed on the operating platform 8 by axle bed 15, gear wheel 10 and minor sprocket 12 are fixedly mounted on the two ends of first power transmission shaft 11 respectively, gear wheel 10 and pinion 9 are meshed, before rope sheave 6 is divided into vertically, back two halves 61,62, before hinge wheel 13 is installed in by bolt, back two halves 61, between 62, minor sprocket 12 is in transmission connection by chain 16 with hinge wheel 13, rope sheave 6 is installed on second power transmission shaft 14 by bearing, the two ends of second power transmission shaft 14 are installed in sheave support device 18 upper ends by sliding shaft base 17, sliding shaft base 17 can slide along sheave support device 18 upper surfaces, locate by the positioning bolt on it, have the plurality of fixed hole on the rope sheave 6, one end of counterweight pull rope 5 is fixed therein on one group of fixing hole, an end that drives rope 7 is fixed on another group fixing hole, counterweight pull rope 5 and driving rope 7 are wrapped on the rope sheave 6 in the other direction, the free end of counterweight pull rope 5 connects counterweight case 4 by polished rod eye A, the free end that drives rope 7 connects sucker rod 19 by polished rod eye B, rope sheave 6 wheel rims stretch out operating platform 8, and its outermost end edge is M with the beeline of king-tower frame 1 in the horizontal direction, M is 725mm, wherein the diameter D of rope sheave 6 is 2m, the diameter d that drives rope is 24mm, and D/d equals 83.3.
As Fig. 3 a, shown in Fig. 3 b and Fig. 3 c, greatly, pinion 10, gear cover 20 is equipped with in 9 outsides, gear cover 20 comprises upper box 21, lower box 22 and sealing shroud 24, lower box 22 is fixedly connected on the operating platform 8, upper box 21 is fixedly mounted on lower box 22 tops, the following joint portion of upper box 21 is provided with slot 25, insert in the middle of the slot 25 the last joint portion of lower box 22, on, lower box 22 is with big, pinion 10,9 corresponding rear portions offer the axis hole 26 that is suitable for holding first power transmission shaft 11 and power output shaft, be set with on the front end outer wall of sealing shroud 24, shown in Fig. 4 a and Fig. 4 b, erection loop 27 is by bolt and last, the rear portion of lower box 22 is fixedly connected, erection loop 27 is with last, lower box 21, also be provided with sealing ring 28 between 22, the fore-end of two sealing shrouds 24 passes two axis holes 26 respectively and stretches into, lower box 21, in 22, the rear end of each sealing shroud 24 is set with adpting flange 29, two adpting flanges 29 are fixedlyed connected with dynamical system shell 30 with axle bed 15 respectively by bolt, also be provided with annular boss 31 on the rear end face of each adpting flange 29, two annular boss 31 stretch into respectively in axle bed 15 and the dynamical system shell 30, upper box 21 tops are provided with oil filler point 32, and lower box 22 bottoms are provided with drain oil 33.
As shown in Figure 5 and Figure 6, the second kind of embodiment of tower frame type combined transmission numerically controlled pumping unit of the present invention and the difference of first kind of embodiment are that rope sheave 206 and hinge wheel 213 are fixedly mounted on the axle sleeve 217, axle sleeve 217 is installed on second power transmission shaft 214 by bearing, the two ends of second power transmission shaft 214 are installed in sheave support device 218 upper ends by fixing axle bed 215, directive wheel mechanism also is housed on the operating platform 208, directive wheel mechanism comprises directive wheel support 209, directive wheel anchor clamps 210 and directive wheel 211, directive wheel support 209 is installed on the operating platform 8 by regulating bolt, directive wheel anchor clamps 210 are installed on the directive wheel support 209 by a rotating pin 212 and some hinged bolts 216, directive wheel 211 is housed on the directive wheel anchor clamps 210, directive wheel 211 outermost end edges are 1300mm with the beeline of king-tower frame in the horizontal direction, rope sheave 206 outermost end edges are 500mm with the beeline of king-tower frame in the horizontal direction, directive wheel 211 outermost end edges are N with the beeline at rope sheave 206 outermost end edges in the horizontal direction, N is 800mm, the part of driving rope 207 between rope sheave 206 and directive wheel 211 is α with the angle of vertical direction, α is 45 degree, wherein rope sheave diameter D ' is 1.6m, drive the diameter d of rope ' be 20mm, D '/d ' equals 80.
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 (7)
1. tower frame type combined transmission numerically controlled pumping unit, comprise the king-tower frame, dynamical system, transmission system, control system, the counterweight case, the counterweight pull rope, rope sheave, drive rope and polished rod eye, described dynamical system, transmission system, control system and rope sheave are installed on the operating platform of king-tower top of the trellis, described control system is connected with dynamical system, the commutation position and the rotating speed of control system control dynamical system, described dynamical system is in transmission connection by transmission system and rope sheave, it is characterized in that: described transmission system comprises pinion, gear wheel, first power transmission shaft, minor sprocket, the hinge wheel and second power transmission shaft, described pinion is fixedly mounted on the output shaft of dynamical system, described first power transmission shaft is installed on the operating platform by axle bed, described gear wheel and minor sprocket are fixedly mounted on the two ends of first power transmission shaft respectively, described gear wheel and pinion are meshed, described hinge wheel and rope sheave relative fixed are installed on second power transmission shaft, described minor sprocket is connected by chain drive with hinge wheel, described second power transmission shaft is fixed on operating platform one side by sheave support device, have the plurality of fixed hole 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 A, the free end of described driving rope connects sucker rod by polished rod eye B
Described pinion and gear wheel are equipped with gear cover outward, described gear cover comprises upper box, lower box and sealing shroud, described lower box is fixedly connected on the operating platform, described upper box is fixedly mounted on lower box top, the following joint portion of upper box is provided with slot, insert in the middle of the described slot the last joint portion of lower box, on described, lower box is with big, the corresponding rear portion of pinion offers the axis hole that is suitable for holding first power transmission shaft and power output shaft, be set with erection loop on the front end outer wall of described sealing shroud, described erection loop is by bolt and last, the rear portion of lower box is fixedly connected, erection loop and last, also be provided with sealing ring between the lower box, the fore-end of described two sealing shrouds passes two axis holes respectively and stretches into, in the lower box, the rear end of each sealing shroud is set with adpting flange, described two adpting flanges are fixedlyed connected with the dynamical system shell with axle bed respectively by bolt, also be provided with annular boss on the rear end face of each adpting flange, described two annular boss stretch into respectively in axle bed and the dynamical system shell, described upper box top is provided with oil filler point, and described lower box bottom is provided with drain oil.
2. tower frame type combined transmission numerically controlled pumping unit according to claim 1, it is characterized in that: before described rope sheave is divided into vertically, back two halves, before described hinge wheel is fixedly mounted on, between the back two halves, described rope sheave is installed on second power transmission shaft by bearing, the two ends of described second power transmission shaft are installed in the sheave support device upper end by sliding shaft base, described sliding shaft base can slide along the sheave support device upper surface, locate by the positioning bolt on it, described rope sheave wheel rim stretches out operating platform, and its outermost end edge is M with the beeline of king-tower frame in the horizontal direction, and M is not less than 700mm.
3. tower frame type combined transmission numerically controlled pumping unit according to claim 2 is characterized in that: the diameter of described hinge wheel is less than the rope sheave diameter.
4. tower frame type combined transmission numerically controlled pumping unit according to claim 3 is characterized in that: the ratio of the diameter d of the diameter D of described rope sheave and driving rope is greater than 70.
5. tower frame type combined transmission numerically controlled pumping unit according to claim 1, it is characterized in that: described rope sheave and hinge wheel are fixedly mounted on the axle sleeve, described axle sleeve is installed on second power transmission shaft by bearing, the two ends of described second power transmission shaft are installed in the sheave support device upper end by fixing axle bed, directive wheel mechanism also is housed on the described operating platform, described directive wheel mechanism comprises the directive wheel support, directive wheel anchor clamps and directive wheel, described directive wheel support is installed on the operating platform by regulating bolt, described directive wheel anchor clamps are installed on the directive wheel support by a rotating pin and some hinged bolts, on the directive wheel anchor clamps directive wheel is housed, described directive wheel outermost end edge is N with the beeline at rope sheave outermost end edge in the horizontal direction, N is not less than 700mm, the part of described driving rope between rope sheave and directive wheel is α with the angle of vertical direction, and α is not less than 45 degree.
6. tower frame type combined transmission numerically controlled pumping unit according to claim 5 is characterized in that: the diameter D ' of described rope sheave and the diameter d that drives rope ' ratio greater than 70.
7. the tower frame type combined transmission numerically controlled pumping unit one of described according to claim 1 to 6, it is characterized in that: a side of described king-tower frame also is provided with the secondary tower frame, be bolted to connection between described secondary tower frame and the king-tower frame, described operating platform is arranged on the top of secondary tower frame.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010227310 CN101881145B (en) | 2010-07-15 | 2010-07-15 | Tower frame type combined transmission numerically controlled pumping unit |
| PCT/CN2011/077098 WO2012006951A1 (en) | 2010-07-15 | 2011-07-13 | Tower assembly transmission numerical controlled oil extractor |
| US13/810,166 US20130112021A1 (en) | 2010-07-15 | 2011-07-13 | Numerically Controlled Tower Type Combination Drive Pumping Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010227310 CN101881145B (en) | 2010-07-15 | 2010-07-15 | Tower frame type combined transmission numerically controlled pumping unit |
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| Publication Number | Publication Date |
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| CN101881145A true CN101881145A (en) | 2010-11-10 |
| CN101881145B CN101881145B (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010227310 Active CN101881145B (en) | 2010-07-15 | 2010-07-15 | Tower frame type combined transmission numerically controlled pumping unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226387A (en) * | 2011-06-13 | 2011-10-26 | 毛宏伟 | Tower frame type combined transmission numerical control oil pumping machine |
| WO2012006951A1 (en) * | 2010-07-15 | 2012-01-19 | Mao Hongwei | Tower assembly transmission numerical controlled oil extractor |
| WO2017133061A1 (en) * | 2016-02-02 | 2017-08-10 | 付尤东 | Oil extractor with intelligent integrated transmission |
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| US4665761A (en) * | 1985-03-19 | 1987-05-19 | North China Petroleum Machinery Repairing Plant | Long stroke pumping unit |
| CN101413387A (en) * | 2008-12-03 | 2009-04-22 | 毛宏伟 | Tower rack type combined transmission oil pumping machine |
| CN101655139A (en) * | 2009-09-19 | 2010-02-24 | 樊世耀 | Speed reducer with high transmission ratio |
| CN101775969A (en) * | 2010-01-11 | 2010-07-14 | 毛宏伟 | Tower type combined drive pumping unit without guide wheel |
| CN201730596U (en) * | 2010-07-15 | 2011-02-02 | 毛宏伟 | Tower type combined transmission numerical-controlled oil extractor |
-
2010
- 2010-07-15 CN CN 201010227310 patent/CN101881145B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665761A (en) * | 1985-03-19 | 1987-05-19 | North China Petroleum Machinery Repairing Plant | Long stroke pumping unit |
| CN101413387A (en) * | 2008-12-03 | 2009-04-22 | 毛宏伟 | Tower rack type combined transmission oil pumping machine |
| CN101655139A (en) * | 2009-09-19 | 2010-02-24 | 樊世耀 | Speed reducer with high transmission ratio |
| CN101775969A (en) * | 2010-01-11 | 2010-07-14 | 毛宏伟 | Tower type combined drive pumping unit without guide wheel |
| CN201730596U (en) * | 2010-07-15 | 2011-02-02 | 毛宏伟 | Tower type combined transmission numerical-controlled oil extractor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012006951A1 (en) * | 2010-07-15 | 2012-01-19 | Mao Hongwei | Tower assembly transmission numerical controlled oil extractor |
| CN102226387A (en) * | 2011-06-13 | 2011-10-26 | 毛宏伟 | Tower frame type combined transmission numerical control oil pumping machine |
| WO2017133061A1 (en) * | 2016-02-02 | 2017-08-10 | 付尤东 | Oil extractor with intelligent integrated transmission |
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| Publication number | Publication date |
|---|---|
| CN101881145B (en) | 2013-09-25 |
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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 Company Limited Address before: 102218 Beijing city Changping District Tiantongyuan 5 District 27 Building 1 unit 112 room Patentee before: Mao Hongwei |
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| CI01 | Publication of corrected invention patent application |
Correction item: Patentee|Address Correct: Mao Hongwei|102218 Beijing city Changping District Tiantongyuan 5 District 27 Building 1 unit 112 room 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 |
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| CI01 | Publication of corrected invention patent application |