CN112576225A - Complete device for direct-drive oil pumping unit - Google Patents
Complete device for direct-drive oil pumping unit Download PDFInfo
- Publication number
- CN112576225A CN112576225A CN202011337688.4A CN202011337688A CN112576225A CN 112576225 A CN112576225 A CN 112576225A CN 202011337688 A CN202011337688 A CN 202011337688A CN 112576225 A CN112576225 A CN 112576225A
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- installation
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- gear
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- 238000005086 pumping Methods 0.000 title claims abstract description 43
- 238000009434 installation Methods 0.000 claims abstract description 56
- 230000033001 locomotion Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 14
- 230000032683 aging Effects 0.000 abstract description 8
- 239000010779 crude oil Substances 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 7
- 230000007306 turnover Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241001023788 Cyttus traversi Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Power Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a complete device of a direct-drive oil pumping unit, which comprises an installation base, wherein the installation base is installed on the ground, a motion groove is formed in the installation base, an installation block is fixedly installed on the installation base, the bottom of the installation block is fixedly connected with an installation frame, the installation frame is installed on the ground, an installation groove is formed in the installation block, a driving wheel is rotatably installed in the installation groove, and outer gear teeth and inner gear teeth are machined on the driving wheel. In the invention, the driving motor is started to drive the driving wheel to rotate, the second gear is driven to do circular motion around the first gear, the driving motion block moves in the moving groove, so that the first moving block and the sucker rod plunger are driven to do up-and-down reciprocating motion in the vertical direction, the sucker rod plunger continuously pumps crude oil in a well out of the shaft, the whole oil pumping device adopts gear transmission instead of belt transmission, the ageing resistance of the gear is stronger than that of the belt, the stability of the device is further improved, and the device is convenient to use.
Description
Technical Field
The invention relates to the technical field of pumping units, in particular to a complete device of a direct-drive pumping unit.
Background
The beam pumping unit is mainly used in oil field and consists of horse head, motor, speed reducer, crank, connecting rod and walking beam.
However, firstly, traditional beam type pumping unit adopts belt drive, and the belt exposes in the air, the belt is rubber products, through the easy ageing damage of long-time wind-blowing insolation, and the high temperature that produces in high-speed operation can accelerate the belt damage, the use of device of not being convenient for, secondly, the motor is at high-speed operation in-process, can produce a large amount of heats, traditional beam type pumping unit passes through motor housing contact air natural heat dissipation, natural heat dissipation's inefficiency, and finally, the motor on traditional beam type pumping unit exposes in the air, meet rainwater weather, the rainwater gets into the inside motor that leads to of motor ageing easily.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, a direct-drive pumping unit complete set device is provided.
In order to achieve the purpose, the invention adopts the following technical scheme: a complete set of device of a direct-drive oil pumping unit comprises an installation base, wherein the installation base is installed on the ground, a motion groove is formed in the installation base, an installation block is fixedly installed on the installation base, the bottom of the installation block is fixedly connected with an installation frame, the installation frame is installed on the ground, an installation groove is formed in the installation block, a transmission wheel is rotatably installed in the installation groove, an outer wheel tooth and an inner wheel tooth are machined on the transmission wheel, a first gear which is coaxial with the transmission wheel is fixedly installed in the installation groove, a second gear meshed and connected with the inner wheel tooth is arranged in the installation groove, the second gear is meshed and connected with the first gear, a driving motor is fixedly installed in the installation groove, and a third gear meshed and connected with the outer wheel tooth is fixedly installed on an output shaft of the;
the mounting groove is internally provided with a first moving block which moves in the vertical direction, the first moving block is internally provided with a moving groove and a sliding groove, the second gear is rotatably provided with a moving block which moves in the moving groove, a ball which is in rolling contact with the outer surface wall of the moving block is rotatably arranged in the sliding groove, two sides of the first moving block are fixedly connected with guide rods, the bottom of each guide rod is fixedly provided with a second moving block, and the bottom of each second moving block is fixedly provided with a sucker rod plunger.
As a further description of the above technical solution:
the air inlet and the air outlet are formed in the mounting block, an air inlet fan is fixedly mounted at the air inlet, and an exhaust fan is fixedly mounted at the air outlet.
As a further description of the above technical solution:
a plurality of guide posts are fixedly arranged in the moving grooves, a plurality of rotating grooves are formed in the second moving block, and concave wheels in rolling contact with the outer surface walls of the guide posts are rotatably arranged in the rotating grooves.
As a further description of the above technical solution:
and the guide posts are arranged in the motion groove at equal angles around the axis of the motion groove.
As a further description of the above technical solution:
a plurality of guide holes are formed in the second moving block, a fixed block is fixedly mounted in the moving groove, and a plurality of guide rods inserted into the guide holes are fixedly mounted on the fixed block.
As a further description of the above technical solution:
the guide holes are arranged on the second moving block at equal angles around the axis of the guide rod, and the guide rods are arranged on the fixed block at equal angles around the axis of the guide rod.
As a further description of the above technical solution:
the dust screen is fixedly mounted in the air inlet and the air outlet, and the turnover cover is mounted at the air inlet and the air outlet.
As a further description of the above technical solution:
the driving motor is fixedly installed in the installation groove through bolts.
As a further description of the above technical solution:
the fixed block is internally provided with a groove, one end of the groove is elastically connected with a spring, and the free end of the spring is elastically connected with a sliding ball which is abutted against the outer surface wall of the sucker rod plunger.
As a further description of the above technical solution:
the outer surface wall of the concave wheel is adhered with a rubber layer.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the oil pumping device, the driving motor is started to drive the third gear to rotate, the driving wheel is driven to rotate according to the meshing transmission principle of the latch, the second gear is driven to do circular motion around the first gear, the moving block is driven to move in the moving groove, the first moving block is driven to do up-and-down reciprocating motion in the vertical direction, the guide rod and the oil pumping rod plunger are driven to do up-and-down reciprocating motion in the vertical direction, the oil pumping rod plunger continuously pumps crude oil in a well out of the shaft, the whole oil pumping device adopts gear transmission instead of belt transmission, the aging resistance of the gear is stronger than that of a belt, the stability of the device is improved, and the device is convenient to use.
2. According to the invention, the turnover cover is opened, the air inlet fan and the air exhaust fan are started, the air inlet fan and the air exhaust fan are matched to accelerate the flow of air in the mounting groove, the volatilization of heat is accelerated, the driving motor is cooled, and the heat dissipation efficiency is high.
3. According to the invention, the driving motor is placed in the mounting block, so that the driving motor is protected when raining, rainwater is prevented from entering the driving motor, and the phenomenon that the driving motor is aged due to the fact that the rainwater enters the driving motor is avoided.
Drawings
Fig. 1 shows a schematic front cross-sectional view of a direct drive pumping unit package according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an axial side structure of a direct drive pumping unit package according to an embodiment of the invention;
fig. 3 shows an enlarged schematic view at a of a direct drive pumping unit kit provided according to an embodiment of the invention;
fig. 4 is an enlarged schematic view of a complete set of devices of a direct-drive pumping unit provided according to an embodiment of the invention at position D;
fig. 5 shows an enlarged schematic view at E of a direct drive pumping unit kit provided according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view at C-C of a direct drive pumping unit kit provided in accordance with an embodiment of the present invention;
fig. 7 is a schematic structural diagram of parts of a complete set of direct-drive pumping unit provided by the embodiment of the invention;
fig. 8 shows an enlarged schematic view at B of a direct drive pumping unit kit according to an embodiment of the present invention;
fig. 9 is a schematic partial cross-sectional view of a direct drive pumping unit package according to an embodiment of the present invention.
Illustration of the drawings:
1. installing a base; 101. a motion groove; 2. mounting blocks; 201. mounting grooves; 204. an air inlet; 205. an air outlet; 3. a driving wheel; 301. outer gear teeth; 302. inner gear teeth; 4. a first gear; 5. a second gear; 6. A motion block; 7. a first moving block; 701. a moving groove; 702. a sliding groove; 8. a third gear; 9. a guide bar; 10. a drive motor; 11. a fixed block; 1101. a groove; 12. a ball bearing; 13. an air intake fan; 14. an air draft fan; 15. a dust screen; 16. a second moving block; 1601. a rotating groove; 1602. a guide hole; 17. a concave wheel; 18. a guide post; 19. a guide bar; 20. a mounting frame; 22. turning over the cover; 23. a plunger of the sucker rod; 24. A spring; 25. a sliding ball; 26. a rubber layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-9, a direct-drive oil pumping unit complete set device comprises an installation base 1, the installation base 1 is installed on the ground, a motion groove 101 is formed in the installation base 1, an installation block 2 is fixedly installed on the installation base 1, an installation frame 20 is fixedly connected to the bottom of the installation block 2, the installation frame 20 is installed on the ground, an installation groove 201 is formed in the installation block 2, a transmission wheel 3 is rotatably installed in the installation groove 201, an outer wheel tooth 301 and an inner wheel tooth 302 are machined on the transmission wheel 3, a first gear 4 which is coaxial with the transmission wheel 3 is fixedly installed in the installation groove 201, a second gear 5 which is meshed with the inner wheel tooth 302 is arranged in the installation groove 201, the second gear 5 is meshed with the first gear 4, a driving motor 10 is fixedly installed in the installation groove 201 through bolts, a third gear 8 which is meshed with the outer wheel tooth 301 is fixedly installed on an output shaft of the driving motor 10, a first moving block 7 moving in the vertical direction is arranged in the mounting groove 201, a moving groove 701 and a sliding groove 702 are arranged in the first moving block 7, a moving block 6 moving in the moving groove 701 is rotatably mounted on the second gear 5, balls 12 in rolling contact with the outer surface wall of the moving block 6 are rotatably mounted in the sliding groove 702, guide rods 9 are fixedly connected to two sides of the first moving block 7, a second moving block 16 is fixedly mounted at the bottom of the guide rod 9, a sucker rod plunger 23 is fixedly mounted at the bottom of the second moving block 16, a driving motor 10 is started to drive the third gear 8 to rotate, according to the meshing transmission principle of teeth, a driving wheel 3 is driven to rotate, the second gear 5 is driven to do circular motion around the first gear 4, the moving block 6 is driven to move in the moving groove 701, the first moving block 7 is driven to do up-and-down reciprocating motion in the vertical direction, the guide rod 9 and the sucker rod plunger 23 are driven, sucker rod plunger 23 constantly takes the crude oil in the well out the pit shaft, and whole oil pumping device adopts gear drive, does not adopt belt drive, and the ageing resistance of gear is stronger than the belt, and then has improved the stability of device, and the device of being convenient for uses, places driving motor 10 inside installation piece 2, plays the guard action to driving motor 10 during rainy, prevents inside the rainwater gets into driving motor 10, avoids the rainwater to get into inside driving motor 10 and leads to its ageing.
Referring to fig. 1 and 2, an air inlet 204 and an air outlet 205 are formed in the mounting block 2, an air inlet fan 13 is fixedly mounted at the air inlet 204, an air exhaust fan 14 is fixedly mounted at the air outlet 205, dust screens 15 are fixedly mounted in the air inlet 204 and the air outlet 205, the dust screens 15 prevent dust from entering, flip covers 22 are mounted at the air inlet 204 and the air outlet 205, the flip covers 22 are opened, the air inlet fan 13 and the air exhaust fan 14 are started, the air inlet fan 13 and the air exhaust fan 14 are matched to accelerate the flow of air in the mounting groove 201, the volatilization of heat is accelerated, the driving motor 10 is cooled, and the heat dissipation efficiency is high.
Referring to fig. 3 and 6, a plurality of guide posts 18 are fixedly mounted in the moving groove 101, a plurality of rotating grooves 1601 are formed in the second moving block 16, concave wheels 17 which are in rolling contact with outer walls of the guide posts 18 are rotatably mounted in the rotating grooves 1601, the plurality of guide posts 18 are arranged in the moving groove 101 at equal angles around the axis of the moving groove 101, the concave wheels 17 rotate on the guide posts 18 to prevent the second moving block 16 from rotating, and the concave wheels 17 rotate to reduce friction between the concave wheels and the guide posts 18.
Referring to fig. 3 and 6, a plurality of guide holes 1602 are formed in the second moving block 16, the fixed block 11 is fixedly installed in the moving groove 101, a plurality of guide rods 19 inserted into the guide holes 1602 are fixedly installed on the fixed block 11, the plurality of guide holes 1602 are arranged on the second moving block 16 at equal angles around the axis of the guide rod 9, the plurality of guide rods 19 are arranged on the fixed block 11 at equal angles around the axis of the guide rod 9, and the guide rods 19 ensure stable movement of the second moving block 16 in the vertical direction.
Referring to fig. 1 and 4, a groove 1101 is formed in the fixed block 11, one end of the groove 1101 is elastically connected to a spring 24, a free end of the spring 24 is elastically connected to a sliding ball 25 abutting against an outer surface wall of the plunger 23 of the sucker rod, and the sliding ball 25 reduces friction force when the plunger 23 of the sucker rod moves.
Referring to fig. 6 and 8, a rubber layer 26 is adhered to the outer surface wall of the concave wheel 17, and the rubber layer 26 has a buffering function, so that the concave wheel 17 is prevented from directly contacting the guide post 18 to cause abrasion of the concave wheel 17.
The working principle is as follows: operation of the oil pumping unit: when the oil pumping device is used, firstly, the driving motor 10 is started to drive the third gear 8 to rotate, the driving wheel 3 is driven to rotate according to the meshing transmission principle of the latch, the second gear 5 is driven to do circular motion around the first gear 4, the driving motion block 6 moves in the moving groove 701, so that the first moving block 7 is driven to do up-and-down reciprocating motion in the vertical direction, the guide rod 9 and the sucker rod plunger 23 are driven to do up-and-down reciprocating motion in the vertical direction, the sucker rod plunger 23 continuously pumps crude oil in a well out of the well shaft, the whole oil pumping device adopts gear transmission instead of belt transmission, the aging resistance of the gears is stronger than that of a belt, the stability of the device is improved, and the device is convenient to use;
heat dissipation of the motor: when the heat dissipation device is used, firstly, the turnover cover 22 is opened, then the air inlet fan 13 and the air exhaust fan 14 are started, the air inlet fan 13 and the air exhaust fan 14 are matched with each other to accelerate the flow of air in the mounting groove 201, so that the volatilization of heat is accelerated, the driving motor 10 is cooled, and the heat dissipation efficiency is high;
protection of the motor: place driving motor 10 inside installation piece 2, play the guard action to driving motor 10 during rainy, prevent that the rainwater from getting into inside driving motor 10, avoid the rainwater to get into inside driving motor 10 and lead to it ageing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The complete device of the direct-drive oil pumping unit comprises an installation base (1), wherein the installation base (1) is installed on the ground, and is characterized in that a motion groove (101) is formed in the installation base (1), an installation block (2) is fixedly installed on the installation base (1), an installation frame (20) is fixedly connected to the bottom of the installation block (2), the installation frame (20) is installed on the ground, an installation groove (201) is formed in the installation block (2), a transmission wheel (3) is rotatably installed in the installation groove (201), outer gear teeth (301) and inner gear teeth (302) are processed on the transmission wheel (3), a first gear (4) which is coaxial with the transmission wheel (3) is fixedly installed in the installation groove (201), a second gear (5) which is meshed with the inner gear teeth (302) and connected is arranged in the installation groove (201), and the second gear (5) is meshed with the first gear (4), a driving motor (10) is fixedly installed in the installation groove (201), and a third gear (8) meshed with the outer gear teeth (301) is fixedly installed on an output shaft of the driving motor (10);
the novel oil pumping device is characterized in that a first moving block (7) moving in the vertical direction is arranged in the mounting groove (201), a moving groove (701) and a sliding groove (702) are formed in the first moving block (7), a moving block (6) moving in the moving groove (701) is rotatably mounted on the second gear (5), balls (12) in rolling contact with the outer surface wall of the moving block (6) are rotatably mounted in the sliding groove (702), guide rods (9) are fixedly connected to two sides of the first moving block (7), a second moving block (16) is fixedly mounted at the bottom of each guide rod (9), and a pumping rod plunger (23) is fixedly mounted at the bottom of the second moving block (16).
2. The complete device of the direct-drive oil pumping unit as claimed in claim 1, wherein the mounting block (2) is provided with an air inlet (204) and an air outlet (205), the air inlet (204) is fixedly provided with an air inlet fan (13), and the air outlet (205) is fixedly provided with an air exhaust fan (14).
3. The complete device of the direct-drive pumping unit according to claim 1, wherein a plurality of guide columns (18) are fixedly installed in the moving groove (101), a plurality of rotating grooves (1601) are formed in the second moving block (16), and concave wheels (17) which are in rolling contact with the outer surface walls of the guide columns (18) are rotatably installed in the rotating grooves (1601).
4. A direct drive pumping unit kit as claimed in claim 3, characterised in that a plurality of said guideposts (18) are equiangularly disposed within the motion slot (101) about the axis of the motion slot (101).
5. The set of direct-drive pumping unit complete device according to claim 1, wherein a plurality of guide holes (1602) are formed in the second moving block (16), a fixed block (11) is fixedly installed in the moving groove (101), and a plurality of guide rods (19) inserted into the guide holes (1602) are fixedly installed on the fixed block (11).
6. The set of direct-drive pumping unit devices as claimed in claim 5, wherein the plurality of guide holes (1602) are arranged on the second moving block (16) at equal angles around the axis of the guide rod (9), and the plurality of guide rods (19) are arranged on the fixed block (11) at equal angles around the axis of the guide rod (9).
7. The set of direct-drive pumping unit complete device according to claim 2, wherein dust screens (15) are fixedly mounted in the air inlet (204) and the air outlet (205), and flip covers (22) are mounted at the air inlet (204) and the air outlet (205).
8. The direct-drive pumping unit set as claimed in claim 1, wherein the drive motor (10) is fixedly mounted in the mounting groove (201) by bolts.
9. The complete set of devices of the direct-drive pumping unit according to claim 5, wherein a groove (1101) is formed in the fixed block (11), one end of the groove (1101) is elastically connected with a spring (24), and the free end of the spring (24) is elastically connected with a sliding ball (25) which is abutted against the outer surface wall of the plunger (23) of the pumping rod.
10. A direct drive pumping unit kit as claimed in claim 3, characterised in that the outer surface wall of the geneva wheel (17) is bonded with a rubber layer (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011337688.4A CN112576225A (en) | 2020-11-24 | 2020-11-24 | Complete device for direct-drive oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011337688.4A CN112576225A (en) | 2020-11-24 | 2020-11-24 | Complete device for direct-drive oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112576225A true CN112576225A (en) | 2021-03-30 |
Family
ID=75123425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011337688.4A Pending CN112576225A (en) | 2020-11-24 | 2020-11-24 | Complete device for direct-drive oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112576225A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270826Y (en) * | 1995-05-17 | 1997-12-17 | 四川工业学院 | Planetary ring gear type non-beam oil pump |
| US20060024171A1 (en) * | 2004-07-30 | 2006-02-02 | Weatherford/Lamb, Inc. | Long-stroke deep-well pumping unit |
| US20090266186A1 (en) * | 2006-11-17 | 2009-10-29 | Sinopec Group, Shengli Petroleum Administration Transport Corporation | Ring Rack Oil Pumping Machine |
| CN101619650A (en) * | 2008-06-30 | 2010-01-06 | 朱克彦 | Gear direct-drive walking beam type oil pumping unit |
| CN102182428A (en) * | 2011-04-12 | 2011-09-14 | 钟立国 | Reciprocating rack linear driving oil pumping unit |
| CN102271849A (en) * | 2009-01-05 | 2011-12-07 | 罗伯特·博世有限公司 | Motor-driven machine tool |
| CN104747135A (en) * | 2015-01-09 | 2015-07-01 | 成都久井抽前瞻科技有限公司 | Vertical planet inner gear ring non-beam pumping unit |
| US20180291716A1 (en) * | 2017-04-10 | 2018-10-11 | Zhishen Su | Double Motor Non-beam Pumping Unit with a Reducer Built in the Roller |
-
2020
- 2020-11-24 CN CN202011337688.4A patent/CN112576225A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270826Y (en) * | 1995-05-17 | 1997-12-17 | 四川工业学院 | Planetary ring gear type non-beam oil pump |
| US20060024171A1 (en) * | 2004-07-30 | 2006-02-02 | Weatherford/Lamb, Inc. | Long-stroke deep-well pumping unit |
| US20090266186A1 (en) * | 2006-11-17 | 2009-10-29 | Sinopec Group, Shengli Petroleum Administration Transport Corporation | Ring Rack Oil Pumping Machine |
| CN101619650A (en) * | 2008-06-30 | 2010-01-06 | 朱克彦 | Gear direct-drive walking beam type oil pumping unit |
| CN102271849A (en) * | 2009-01-05 | 2011-12-07 | 罗伯特·博世有限公司 | Motor-driven machine tool |
| CN102182428A (en) * | 2011-04-12 | 2011-09-14 | 钟立国 | Reciprocating rack linear driving oil pumping unit |
| CN104747135A (en) * | 2015-01-09 | 2015-07-01 | 成都久井抽前瞻科技有限公司 | Vertical planet inner gear ring non-beam pumping unit |
| US20180291716A1 (en) * | 2017-04-10 | 2018-10-11 | Zhishen Su | Double Motor Non-beam Pumping Unit with a Reducer Built in the Roller |
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Application publication date: 20210330 |