CN102278095A - Automatic reversing mechanism for rodless oil pumping unit - Google Patents
Automatic reversing mechanism for rodless oil pumping unit Download PDFInfo
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- CN102278095A CN102278095A CN2011102269201A CN201110226920A CN102278095A CN 102278095 A CN102278095 A CN 102278095A CN 2011102269201 A CN2011102269201 A CN 2011102269201A CN 201110226920 A CN201110226920 A CN 201110226920A CN 102278095 A CN102278095 A CN 102278095A
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- 238000005086 pumping Methods 0.000 title abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 230000002457 bidirectional effect Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention relates to an automatic reversing mechanical mechanism for a rodless oil pumping unit. The automatic reversing mechanical mechanism comprises a two-way clutch mechanism, a reversing control mechanism and an execution mechanism, wherein the reversing control mechanism is connected with the two-way clutch mechanism by one end of a coupler, and the other end of the coupler is connected with the execution mechanism; the two-way clutch mechanism and the execution mechanism are connected with a motor and a plunger pump respectively; one-way rotation provided by the motor is converted into two-way rotation to be outputted controllably by the two-way clutch mechanism; the reversing control mechanism controls the separation and reunion of the clutch mechanism to control rotary direction of output; rotary power is transferred to the execution mechanism; and the execution mechanism is converted into reciprocating axial translational motion by the rotary power to be outputted to the plunger pump to apply work, so an oil pumping function is realized. By the automatic reversing mechanical mechanism, the continuous rotary motion of the motor is converted into reciprocating linear motion to push the plunger pump to apply work, so 'rodless' oil extraction is realized, the problem of overcoming the dead weight of an oil pumping rod to apply work and the problem of eccentric wear in the conventional rod oil extraction system are solved completely, the cost can be reduced greatly, and the aims of energy conservation and consumption reduction are fulfilled.
Description
Technical field
The present invention relates to the oil pumper that recovers the oil in the oil field, relate to a kind of automatic reverse frame for movement of not having the bar oil pumper in particular.
Background technology
The oil field rod pumping systems such as adopting beam type usually that recovers the oil, its operating principle are that the power of well head is delivered to the plunger displacement pump of down-hole by sucker rod, realize pumping.This structural volume is huge and heavy, need overcome the deadweight of sucker rod and the friction working of sucker rod and tube wall during work, not only cause a large amount of power consumptions, and efficient is not high.In addition, have also that oil pipe wearing and tearing, oil pick-up tube are disconnected takes off and problem such as pump detection period is short.For solving the rod and tube partial-wear problem, the oil field takes to increase the mode of roller type centralizer usually in sucker rod, and the change sliding friction is rolling friction, although this measure has alleviated wearing and tearing to a certain extent, can not fundamentally solve the eccentric wear problem between the rod tube.
On December 19th, 2007, Chinese utility application notice of authorization CN 200993092Y disclosed " beam-pumping unit drives fluid power cylinder formula does not have bar fluid power oil pumping system ", this system adopts the piston in the beam-pumping unit driving fluid power cylinder to pump and pumps high voltage power liquid driving down-hole fluid power feedback type oil-well pump work, replenish the loss power fluid by one way valve, during up stroke in the beam-pumping unit pulling fluid power cylinder piston pump high voltage power liquid and drive to lift on the major diameter plunger in the fluid power feedback type oil-well pump of down-hole and finish imbibition, feed back again during down stroke under the effect of fluid power and finish the discharge opeing process, therefore solved the eccentric wear problem of sucker rod.But this structure is complicated, the manufacturing cost height, and it is not too convenient to operate.
Summary of the invention
The object of the present invention is to provide a kind of automatic reversing mechanism that does not have the bar oil pumper, to solve oil pumper high energy consumption, inefficient technical problem in the prior art.
In order to achieve the above object, solution of the present invention is:
A kind of automatic reversing mechanism that does not have the bar oil pumper, it comprises bidirectional clutch, commutation controlling mechanism and executing agency, wherein, the input of described commutation controlling mechanism is connected with the output of two-way clutch mechanism by second shaft coupling, and its output is connected with output mechanism by the 3rd shaft coupling.Described two-way clutch mechanism is connected with plunger displacement pump with motor respectively with executing agency, motor provides continuous rotary power, bidirectional clutch is converted to two-way rotation output to the motor one-directional rotation, commutation controlling mechanism is by the clutch for clutch control direction of rotation of solenoidoperated cluthes, rotary power passes to executing agency, and executing agency converts round axial translation to by rotary power and exports the plunger displacement pump acting to.
Described commutation controlling mechanism comprises the screw thread output shaft and lays respectively at screw thread output shaft both sides and parallel with it second countershaft and the 3rd countershaft; One end of screw thread output shaft is the input of commutation controlling mechanism, and the other end is an output; Screw fit has first nut on the described screw thread output shaft, extends radially out a wedge post on first nut; The wedge post of described first nut puts in the energy-stored spring cover, is symmetrically set with energy-stored spring in the described energy-stored spring cover, and the wedge post of first nut is sandwiched between the termination of two energy-stored springs; Described energy-stored spring cover is connected as a single entity by junction plate and first sliding sleeve and second sliding sleeve, and first sliding sleeve and second sliding sleeve are enclosed within respectively on second countershaft and the 3rd countershaft; Described junction plate is connected with the shifting fork mechanism of bidirectional clutch; Also be provided with on described junction plate in the limit spring cover limit spring cover spacing steel ball and limit spring are housed, the limit spring lower end is installed in the limit spring cover by adjusting screw(rod), and spacing steel ball is withstood in the upper end; One pressing plate is fixed in the commutation controlling mechanism, towards spacing steel ball setting, and cooperating two limited impressions that match with spacing steel ball that are axially arranged with that are parallel to the screw thread output shaft on the one side with spacing steel ball, spacing steel ball withstands on the pressing plate under the effect of limit spring.
This commutation controlling mechanism screw thread output shaft is connected with the output shaft of two-way clutch mechanism by second shaft coupling, first nut is axially motion under the rotation of screw thread output shaft, its wedge post compress energy storage spring, energy-storaging spring elastic force increases gradually, when increasing to the spacing pressure that is enough to overcome between spacing steel ball and the pressing plate limited impression, spacing steel ball leaves spacing cavity, whole junction plate rapid axial under the effect of energy-storaging spring elastic force slides, because the loss of energy, spacing steel ball is pressed in another spacing cavity of pressing plate, carries out spacing once more.Because the shifting fork mechanism of junction plate and changement links together, so its slip also will drive the axially-movable of band shifting fork mechanism, the two-way clutch of the clutch that has never been realized, the rotation direction of change output shaft.
Further, described two-way clutch mechanism comprises power shaft, first countershaft, output shaft and the shifting fork mechanism that is arranged in parallel; On power shaft, be fixedly connected with first gear and second gear; Fixedly connected the 3rd gear and the 4th gear on first countershaft; Be set with the 5th gear and the 6th gear at output shaft, and the 5th gear and the 6th gear are identical, the distance between the 5th gear and the 6th gear equals the spacing of two limited impressions on the pressing plate of commutation controlling mechanism; Also be provided with clutch block between the 5th gear and the 6th gear, this clutch block and output shaft are that interior external splines is slidingly connected, and cooperate with shifting fork mechanism; The opposing end surface of described the 5th gear and clutch block and clutch block and the 6th gear is equipped with intermeshing end face tooth; Described first gear and the 5th gears engaged, second gear and the 4th gears engaged, the 3rd gear and the 6th gears engaged.
Because power shaft is to be connected with motor by shaft coupling, when machine operation, power is inputed to clutch, drive the clutch of shifting fork mechanism control clutch block and the 5th gear and the 6th gear by commutation controlling mechanism, realize the rotation direction of control output shaft, rotary power passes to executing agency, and executing agency becomes the reciprocating power of plunger displacement pump by the different power conversion of direction of rotation.
Described executing agency comprises drive screw and second nut that is installed on the described biography screw rod, and this second nut is connected with catch bar by the junction plate which is provided with.The rotation of drive screw drives the axially-movable of nut, and the axially-movable of nut drives the motion of catch bar, and the output of catch bar connects plunger displacement pump, and the output motive force can realize oil pumping.
The one-directional rotation that the present invention provides motor with the Forbidden City two-way clutch mechanism is converted to the controlled output of two-way rotation, commutation controlling mechanism by the control clutch from, close the direction of rotation of control output, rotary power passes to executing agency, executing agency converts reciprocal axial translation to by rotary power and exports the plunger displacement pump acting to, realize Rodless oil extraction, it is simple in structure, be full mechanical mechanism, thoroughly solved conventional high (eccentric wear) problem of high consumption, poor efficiency and manufacturing cost that has rod recovering system to exist.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 does not contain the vertical view of sliding axle for bidirectional clutch;
Fig. 3 is the left view of bidirectional clutch;
Fig. 4 is the end face tooth figure of clutch block;
Fig. 5 is the vertical view of commutation controlling mechanism;
Fig. 6 is the left view of commutation controlling mechanism;
Fig. 7 is the right view of commutation controlling mechanism;
Wherein, 1-first shaft coupling, 2-power shaft, 3-first countershaft, the 4-output shaft, 5-first gear, 6-second gear, 7-the 4th gear, 8-the 3rd gear, 9-the 6th gear, 10-clutch block, 11-the 5th gear, the 12-spring, 13-shift fork, 14-sliding axle, 15-axle sleeve, 16-second shaft coupling, 17-screw thread output shaft, 18-second countershaft, 19-the 3rd countershaft, 20-first nut (band contract post), 21-second sliding sleeve, 22-first sliding sleeve, 23-junction plate, 24-adjusting screw(rod), the 25-limit spring, 26-steel ball, 27-limit spring cover, the 28-energy-stored spring, 29-energy-stored spring cover, 30-fluting, the 31-adjusting screw(rod), 32-pressing plate, 33-connecting screw rod, the 34-limited impression, 35-the 3rd shaft coupling, 36-drive screw, 37-second nut, the 38-impeller-hub, 39-promotes axle sleeve, 40-first order right end plate, 41-first order first member plate, 42-second level right end plate, 43-second level first member plate, 44-third level right end plate, 45-third level first member plate.
The specific embodiment
In order further to explain technical scheme of the present invention, the present invention will be described in detail below by coming in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of automatic reverse mechanical mechanism that does not have the bar oil pumper, this structure is divided into three ranks, is that two-way clutch mechanism, the second level are that the commutation controlling mechanism and the third level are that executing agency forms by the first order, and three grades of series connection successively are contained in the cylindrical shell.
Referring to Fig. 2 and Fig. 3, two-way clutch mechanism comprises the output shaft 4 of the power shaft 2 that be arranged in parallel, first countershaft 3, external splines and has the sliding axle 14 of shift fork.Sliding axle 14 two ends are installed on first order first member plate 41 and the first order right end plate 40 by sliding sleeve 15.First gear 5 is fixedlyed connected with power shaft 2 with second gear 6; The 3rd gear 8 is fixedlyed connected with first countershaft 3 with the 4th gear 7; The 5th gear 11 and the 6th gear 9 skies are enclosed within on the output shaft 4, also are provided with clutch block 10 between the 5th gear 11 and the 6th gear 9, and this clutch block 10 is connected with the external splines of output shaft 4, can endwisely slip along output shaft.On the opposing end surface of the 5th gear 11 and clutch block 10, clutch block 10 and the 6th gear 9, be equipped with intermeshing end face tooth; Between the end plate of the another one end face of the 5th gear 11 and the 6th gear 9 and a corresponding side separately, spring 12 is set, the 5th gear 11 and the 6th gear 9 is withstood, guarantee and the combining of clutch block by spring.Described first gear 5 and 11 engagements of the 5th gear, second gear 6 and 7 engagements of the 4th gear, the 3rd gear 8 and 9 engagements of the 6th gear; First to fourth gear 5,6,7,8 is identical.One-body molded shift fork 13 on the sliding axle 14, shift fork 13 matches with clutch block 10.
Referring to Fig. 4, the end face tooth of clutch block 10 is special end face toothings, and the tooth trace of its end face tooth tooth all passes through the center of circle of end face.
Referring to Fig. 5, Fig. 6 and Fig. 7, commutation controlling mechanism comprises screw thread output shaft 17 and lays respectively at screw thread output shaft 17 both sides and second countershaft 18 and the 3rd countershaft 19 of setting in parallel.First nut 20 is housed on the described screw thread output shaft 17, on first nut 20, extend radially out a wedge post, the wedge post of first nut 20 puts in the energy-stored spring cover 29, this energy-stored spring cover 29 is parallel with screw thread output shaft 17, the wedge post that is symmetrically set with energy-stored spring 28, the first nuts 20 in it is sandwiched between the termination of two energy-stored springs 28.Energy-stored spring cover 29 is connected as a single entity by junction plate 23 and first sliding sleeve 22 and second sliding sleeve 21, and first sliding sleeve 22 and second sliding sleeve 21 are enclosed within respectively on second countershaft 18 and the 3rd countershaft 19, whole like this energy-stored spring overlap 29 and junction plate 23 just can endwisely slip.Junction plate 23 is connected by attachment screw 33 with the shift fork 13 of bidirectional clutch.Also be provided with limit spring cover 27 on junction plate 23, in the limit spring cover 27 spacing steel ball 26 and limit spring 25 be housed, limit spring 25 lower ends are installed in the limit spring cover 27 by adjusting screw(rod) 24, and spacing steel ball 26 is withstood in the upper end.In commutation controlling mechanism, also be fixed with a pressing plate 32 in addition, it is parallel to screw thread output shaft 17, be provided with towards spacing steel ball 26, two limited impressions 34 are arranged on it, match with spacing steel ball, spacing steel ball withstands under the effect of limit spring 25 in the limited impression of pressing plate 32, and the spacing of two limited impressions equals the 5th gear 11 of two-way clutch mechanism and the distance between the 6th gear 9.
Referring to Fig. 1, executing agency comprises drive screw 36 and second nut 37 that is installed on the described biography screw rod, and this second nut 37 is connected by a junction plate which is provided with and an end that is positioned at the impeller-hub 38 of second nut top; Impeller-hub 38 is parallel with drive screw 36, and its other end is supported on the 3rd ultra-Left end plate 45 by promoting axle sleeve 39, and stretches out this mechanism, is connected with plunger displacement pump.
This mechanism is in specific design, can about two-way clutch mechanism, hold first order first member plate 41 and the 40 conduct supports of first order right end plate are set respectively, end is provided with second level first member plate 43 and second level right end plate 42 respectively for supporting about commutation controlling mechanism, the 3rd ultra-Left end plate 45 and third level right end plate 44 is set for supporting respectively at the two ends, the left and right sides of executing agency.Power shaft 2 right-hand members of two-way clutch mechanism pass first order right end plate 40 and link to each other with motor by first shaft coupling 1, external splines output shaft 4 left ends of two-way clutch mechanism pass first order first member plate 41 and link to each other by screw thread output shaft 17 right-hand members that pass second level right end plate 42 in second shaft coupling 16 and the commutation controlling mechanism, and the sliding axle 14 of two-way clutch mechanism passes fluting 30 that first order first member plate 41 offers and links to each other by the junction plate 23 that passes second level right end plate 42 in connecting screw rod 33 and the commutation controlling mechanism; Screw thread output shaft 17 left ends in the commutation controlling mechanism pass the right-hand member of second level first member plate 43 by the drive screw that passes third level right end plate 44 36 in the 3rd shaft coupling 35 and the executing agency and link to each other; The left end of the impeller-hub 38 in the executing agency passes the 3rd ultra-Left end plate 45 and links to each other with plunger displacement pump.
The course of work of the present invention is as follows:
Claims (8)
1. automatic reversing mechanism that does not have the bar oil pumper, it comprises two-way clutch mechanism, commutation controlling mechanism and executing agency, it is characterized in that: the input of described commutation controlling mechanism is connected with the output of two-way clutch mechanism by second shaft coupling, and its output is connected with executing agency by the 3rd shaft coupling;
Described commutation controlling mechanism comprises screw thread output shaft (17) and lays respectively at screw thread output shaft (17) both sides and parallel with it second countershaft (18) and the 3rd countershaft (19); One end of screw thread output shaft (17) is the input of commutation controlling mechanism, and the other end is an output; Described screw thread output shaft (17) is gone up screw fit first nut (20), extends radially out a wedge post on first nut (20); The wedge post of described first nut (20) puts in the energy-stored spring cover (29), is symmetrically set with energy-stored spring (28) in the described energy-stored spring cover (29), and the wedge post of first nut (20) is sandwiched between the termination of two energy-stored springs (28); Described energy-stored spring cover (29) is connected as a single entity by junction plate (23) and first sliding sleeve (22) and second sliding sleeve (21), and first sliding sleeve (22) and second sliding sleeve (21) are enclosed within respectively on second countershaft (18) and the 3rd countershaft (19); Described junction plate (23) is connected with the shifting fork mechanism of two-way clutch mechanism; On described junction plate (23), also be provided with limit spring cover (27), spacing steel ball (26) and limit spring (25) are housed in the limit spring cover (27), limit spring (25) lower end is installed in the limit spring cover (27) by adjusting screw(rod) (24), and spacing steel ball (26) is withstood in the upper end; One pressing plate (32) is fixed in the commutation controlling mechanism, be provided with towards spacing steel ball (26), and being axially arranged with two limited impressions that match with spacing steel ball (34) what on spacing steel ball (26) one side, be parallel to the screw thread output shaft, spacing steel ball is withstanding under the effect of limit spring (25) on the pressing plate (32).
2. the automatic reversing mechanism of no bar oil pumper according to claim 1 is characterized in that: described two-way clutch mechanism comprises power shaft (2), first countershaft (3), output shaft (4) and the shifting fork mechanism that is arranged in parallel; On power shaft (2), be fixedly connected with first gear (5) and second gear (6); Go up fixedly connected the 3rd gear (8) and the 4th gear (7) at first countershaft (3); Be set with the 5th gear (11) and the 6th gear (9) at output shaft (4), and the 5th gear (11) and the 6th gear (9) are identical, and the distance between the 5th gear (11) and the 6th gear (9) equals the spacing of last two limited impressions of pressing plate (32) of commutation controlling mechanism; Also be provided with clutch block (10) between the 5th gear (11) and the 6th gear (9), this clutch block (10) is slidingly connected for interior external splines with output shaft (4), and cooperates with shifting fork mechanism; Described the 5th gear (11) is equipped with intermeshing end face tooth with the opposing end surface of clutch block (10) and clutch block (10) and the 6th gear (9); Described first gear (5) and the 5th gear (11) engagement, second gear (6) and the 4th gear (7) engagement, the 3rd gear (8) and the 6th gear (9) engagement.
3. the automatic reversing mechanism of no bar oil pumper according to claim 2 is characterized in that: the tooth trace of the end face tooth of described clutch block (10) intersects at the center of circle of end face.
4. according to the automatic reversing mechanism of claim 1,2 or 3 described no bar oil pumpers, it is characterized in that: the another one end face at described the 5th gear (11) and the 6th gear (9) is provided with spring (12), by spring the 5th gear (11) and the 6th gear (9) are withstood, assurance combines with clutch block (10).
5. according to the automatic reversing mechanism of claim 1,2 or 3 described no bar oil pumpers, it is characterized in that: described shifting fork mechanism comprises sliding axle (14) and shift fork (13), the end of sliding axle (14) is connected with the junction plate (23) of commutation controlling mechanism, and shift fork (13) matches with clutch block (10).
6. according to the automatic reversing mechanism of claim 1,2 or 3 described no bar oil pumpers, it is characterized in that: described executing agency comprises drive screw (36), second nut (37) and impeller-hub (38); The input of described drive screw (36) is connected with the output of commutation controlling mechanism by the 3rd shaft coupling (35), second nut (37) is installed on the described drive screw, second nut (37) is connected with impeller-hub (38) by the junction plate which is provided with, and described impeller-hub (38) is thrust output outwards.
7. according to the automatic reversing mechanism of claim 1,2 or 3 described no bar oil pumpers, it is characterized in that: described two-way clutch mechanism, commutation controlling mechanism and output mechanism are contained in the cylindrical shell jointly.
8. the automatic reversing mechanism of no bar oil pumper according to claim 6 is characterized in that: end is respectively equipped with the support as its power shaft (2), first countershaft (3), output shaft (4) and shifting fork mechanism of first order first member plate (41) and first order right end plate (40) about described two-way clutch mechanism; End is respectively equipped with the support as its screw thread output shaft (17), second countershaft (18) and the 3rd countershaft (19) of second level first member plate (43) and second level right end plate (42) about described commutation controlling mechanism; The two ends, the left and right sides of described executing agency are respectively equipped with the support as drive screw (36) and impeller-hub (38) of the 3rd ultra-Left end plate (45) and third level right end plate (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110226920.1A CN102278095B (en) | 2011-08-09 | 2011-08-09 | Automatic reversing mechanism for rodless oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110226920.1A CN102278095B (en) | 2011-08-09 | 2011-08-09 | Automatic reversing mechanism for rodless oil pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102278095A true CN102278095A (en) | 2011-12-14 |
| CN102278095B CN102278095B (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110226920.1A Expired - Fee Related CN102278095B (en) | 2011-08-09 | 2011-08-09 | Automatic reversing mechanism for rodless oil pumping unit |
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| CN (1) | CN102278095B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644451A (en) * | 2012-04-20 | 2012-08-22 | 李兆胜 | Multi-stage variable speed reverse oil pumping machine |
| CN102777363A (en) * | 2012-08-17 | 2012-11-14 | 马宝忠 | Intelligent reversing electric submersible rodless oil pumping device |
| CN116752940A (en) * | 2023-08-23 | 2023-09-15 | 克拉玛依市圣起钻采设备有限责任公司 | Beam-free mechanical reversing type pumping unit |
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| US5307910A (en) * | 1993-03-12 | 1994-05-03 | Im Kwan Soon | Manually operated clutch and brake |
| CN101328962A (en) * | 2008-06-05 | 2008-12-24 | 江克坚 | Mechanical type closed loop self-coupling speed and direction changing system |
| CN101733695A (en) * | 2008-11-18 | 2010-06-16 | 李世武 | Hand-held electric buffing attachment |
| CN101975043A (en) * | 2010-10-12 | 2011-02-16 | 毛国武 | Automatic clutch reciprocating motion pumping unit |
| CN202194627U (en) * | 2011-08-09 | 2012-04-18 | 江克坚 | Automatic reversing mechanism of rodless oil pumping unit |
-
2011
- 2011-08-09 CN CN201110226920.1A patent/CN102278095B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307910A (en) * | 1993-03-12 | 1994-05-03 | Im Kwan Soon | Manually operated clutch and brake |
| CN101328962A (en) * | 2008-06-05 | 2008-12-24 | 江克坚 | Mechanical type closed loop self-coupling speed and direction changing system |
| CN101733695A (en) * | 2008-11-18 | 2010-06-16 | 李世武 | Hand-held electric buffing attachment |
| CN101975043A (en) * | 2010-10-12 | 2011-02-16 | 毛国武 | Automatic clutch reciprocating motion pumping unit |
| CN202194627U (en) * | 2011-08-09 | 2012-04-18 | 江克坚 | Automatic reversing mechanism of rodless oil pumping unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644451A (en) * | 2012-04-20 | 2012-08-22 | 李兆胜 | Multi-stage variable speed reverse oil pumping machine |
| CN102777363A (en) * | 2012-08-17 | 2012-11-14 | 马宝忠 | Intelligent reversing electric submersible rodless oil pumping device |
| CN116752940A (en) * | 2023-08-23 | 2023-09-15 | 克拉玛依市圣起钻采设备有限责任公司 | Beam-free mechanical reversing type pumping unit |
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| CN102278095B (en) | 2014-01-01 |
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Address after: Jin Ling Zhen Shan 265400 Zhaoyuan city in Shandong province Yantai City Zhao Village No. 123 Patentee after: Jiang Kejian Address before: Jiulongpo District, Chongqing City, No. 27 -5-1-3 Street Garden Patentee before: Jiang Kejian |
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