CN203271686U - Single-motor double-sided driving energy-saving chain type oil pumping unit - Google Patents

Single-motor double-sided driving energy-saving chain type oil pumping unit Download PDF

Info

Publication number
CN203271686U
CN203271686U CN 201320253638 CN201320253638U CN203271686U CN 203271686 U CN203271686 U CN 203271686U CN 201320253638 CN201320253638 CN 201320253638 CN 201320253638 U CN201320253638 U CN 201320253638U CN 203271686 U CN203271686 U CN 203271686U
Authority
CN
China
Prior art keywords
counterweight
wheel
chain
motor
duplex chain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320253638
Other languages
Chinese (zh)
Inventor
何佳龙
刘岩
沈望皓
王继新
杨兆军
石建策
贾继光
曲兴田
杨永海
于萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin University
Original Assignee
Jilin University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jilin University filed Critical Jilin University
Priority to CN 201320253638 priority Critical patent/CN203271686U/en
Application granted granted Critical
Publication of CN203271686U publication Critical patent/CN203271686U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The utility model discloses a single-motor double-sided driving energy-saving chain type oil pumping unit which comprises a supporting part, a transmission part and a counterweight adjusting part. According to the utility model, a single motor is adopted for driving double chains, the tensioning degree of the chains can be adjusted in real time, stroke is variable, stroke frequency can be adjusted and dynamic counterweights are realized.

Description

Single motor bilateral drives energy-saving chain pumping unit
Technical field
The utility model relates to a kind of oil pumper of petroleum industry oil recovery use, and particularly a kind of single motor bilateral drives energy-saving chain pumping unit.
Background technology
At present, the oil recovery machiner that uses in China oil field, majority is beam type sucker rod pumping machine,, the advantages such as reliability high, convenient operating maintenance simple in structure due to it, be widely used by domestic, yet at present oil field at home has been in the exploitation middle and later periods, and the moisture continuous increase in oil field uses conventional pumping unit with can't more economical, exploitation effectively.According to statistics, domestic oil pumper operational efficiency is generally low, and average efficiency is less than 30%, and year power consumption surpasses 10,000,000,000 kilowatt hours.
In recent years, requirement according to oil production technology, both at home and abroad all at development long stroke, low jig frequency, efficient energ-saving beam-pumping unit, wherein the oil pumper of chain structure is more successful type, because of its have simple in structure, stroke is grown, operate steadily, the reducer nominal torque is little and be easy to the characteristics such as installation is used widely.Yet the existing following problem of chain pumping unit ubiquity: the oil field lifting load is variant, and existing oil pumper can not the quick adjustment balance weight; The operating mode of lifting chain is deflection load-bearing stress, and chain wear is larger, if adopt chain to drive, and the synchronism of chain is bad, and the tightness of chain is non-adjustable; The jig frequency of oil pumper, stroke cannot be regulated etc.
The utility model content
The purpose of this utility model be to solve that the energy consumption that present oil pumper exists is high, stroke is immutable, technical problem that counterweight can not quick adjustment, and provide a kind of single motor bilateral to drive energy-saving chain pumping unit, the utility model adopts single motor-driven chain, the tensioning degree of real-time adjusting chain, stroke is variable, and jig frequency is adjustable and realize dynamic counterweight.
The utility model is to be grouped into by support section, running part and counterweight adjusting portion;
Described support section comprises pedestal, main couple and front and back support.
Described pedestal is used for mounted motor, reducer, torque sensor, brake and main couple, and pedestal fixes on the ground by stone bolt, and main couple is fixed on pedestal, and front and back support is fixed on both sides, main couple front and back;
Described running part comprises motor, shaft coupling, reducer, torque sensor, brake, two preamble belt wheels, synchronous pulley, two Timing Belts, two lower duplex chain wheels, chain, reversing arrangement, two upper duplex chain wheels, two upper duplex chain wheel guide rails, two setting guide rails, two cover tensioning apparatus, three snap rings, front jockey wheel, rear directive wheel, upper fixed pulley, lower fixed pulleys form after two.
Described motor adopts switched reluctance machines, and motor is bolted on pedestal; Described reducer adopts an end input, two ends output type reducer, and reducer is bolted on pedestal; Described snap ring is U-shaped, is arranged on front jockey wheel, rear directive wheel and lower fixed pulley, prevents that wire rope from jumping out the race of front jockey wheel, rear directive wheel and lower fixed pulley in motion process.
Described upper duplex chain wheel can slide up and down in upper duplex chain wheel guide rail, stroke according to the actual requirements, and the position of duplex chain wheel in upper duplex chain wheel guide rail in adjusting, and by bearing pin and being bolted in upper duplex chain wheel guide rail.
Described reversing arrangement comprises specific links, cross slide way, setting guide rail and cylinder.
Described specific links comprises cylinder, two thickening carrier bars, two reinforcing sleeves, two bearing pins and four chain link shafts; Described thickening carrier bar adds boss rank on original carrier bar, boss has a pin-and-hole on rank, is used for interfixing with reinforcing sleeve; Described reinforcing sleeve is inner concave shape, and there is pin-and-hole groove both sides, and groove coordinates with the thickening carrier bar, interfixes by bearing pin; Described chain link shaft passes from the through hole of thickening carrier bar than original chain link axial length, is connected with other three carrier bars.By specific links, the active force of wire rope is shared to two chain link shafts, improved reliability, increase the service life; Described cylinder is arranged in cross slide way, and can horizontally slip in cross slide way; Respectively there is pulley at the cross slide way two ends, slide up and down in erectting guide rail.
Described tensioning apparatus comprises regulating wheel, pull pressure sensor, electric pushrod and tension pulley support, described electric pushrod is bolted on main couple, electric pushrod output pull pressure sensor one end that is threaded, the pull pressure sensor other end is threaded on tension pulley support, regulating wheel is arranged on tension pulley support, and meshes with chain.Detect pressure between regulating wheel and chain by pull pressure sensor, come the tensioning degree of adjusting chain, make that the tensioning degree of chain remains in certain limit in operation process, thereby make the synchronism of two chains better, reduce energy consumption.
motor output shaft is connected with the shaft coupling left end by key, the shaft coupling right-hand member is connected with reduction box input shaft by key, reduction box left end output shaft is connected with the torque sensor right-hand member, reduction box right-hand member output shaft is connected with the brake input, after one, synchronous pulley is connected with the torque sensor left end, after another, synchronous pulley is connected with the brake right-hand member, and by Timing Belt, moment of torsion is passed to the preamble belt wheel, the preamble band is connected with lower duplex chain wheel by connecting axle, lower duplex chain wheel chain drive-belt is realized shuttling movement, by reversing arrangement, the shuttling movement of chain is changed into the straight reciprocating motion up and down of reversing arrangement, reversing arrangement is fixedly connected with wire rope, wire rope is from passing between front jockey wheel and snap ring and between rear directive wheel and snap ring, difference connecting with pumping rod and counterweight, thereby driving sucker rod and counterweight moves up and down, realize oil pumping function,
Described counterweight adjusting portion is divided and is comprised main counterweight, adjustable counter balance, counter weight base, counterweight motor, lifting arm, buffer spring and weight guide;
Described main counterweight is cylinder, and its quality is fixed value, and its both sides are equipped with two directive wheels, slide up and down in weight guide; Described adjustable counter balance is comprised of two circular arc bodies, circular arc body is that cylinder is divided into some equal portions, cylinder is divided into eight parts in the present embodiment, every a shape is identical, and one group of adjustable counter balance of two parts of compositions that the position is relative is divided into four groups of adjustable counter balances in the present embodiment, the quality of four groups is different, can be set as according to demand the quality of different brackets, a groove be arranged below every portion, be used for the counterweight that lifting arm promotes different quality; Described buffer spring is that four identical spring and spring bases of structure form, spring base is used for fixing spring, spring base is arranged on respectively in the above and below of left rail above and below in weight guide and right rail, when main counterweight moved up and down in weight guide, buffer spring played spacing and storage power and the effect that releases energy; Described lifting arm is comprised of cylinder and the fan type body with two flabellums, the rotation of counterweight motor-driven lifting arm, and two flabellums rotate in the groove of adjustable counter balance, select the adjustable counter balance of different quality; There are four through holes to be used for being fixed on pedestal on described counter weight base base plate; Described weight guide is arranged on counter weight base, and four buffer springs that structure is identical be used for to be installed, and as the guide rail of the directive wheel of main counterweight both sides.
Counter weight base is fixed on pedestal, adjustable counter balance is placed on counter weight base, wire rope is connected on main counterweight, the counterweight motor is fixed on main counterweight, when dropping on minimum point, suitable adjustable counter balance is selected in the rotation of counterweight motor-driven lifting arm when counterweight (weight mass equals main weight mass and adds the adjustable counter balance quality), rear counterweight is raised, and realizes dynamic counterweight.
The beneficial effects of the utility model are:
1. the utility model adopts single motor-driven both sides chain movement, and can regulate both sides chain tension degree, makes both sides chain synchronism better, reduced and reversing arrangement between friction; Adopt simultaneously switched reluctance machines, greatly reduce energy consumption, improved the efficient of oil pumper.
2. the utility model adopts the mode of the dynamic counterweight that main counterweight and adjustable counter balance combine.Adjustable counter balance drives the counterweight electric machine rotation by gathering the torque transmission shaft size, promotes the adjustable counter balance of Different Weight, has realized dynamic counterweight, thereby has alleviated output power of motor, has reduced energy consumption.
3. the utility model adopts the special joint that connects with reinforcing sleeve, realizes active force is assigned on two chain link bearing pins, has improved the special reliability that connects joint, increases the service life;
4. the utility model is gone up the position of duplex chain wheel in upper duplex chain wheel guide rail by adjusting, changes simultaneously the chain of corresponding length, has realized that stroke can regulate according to actual conditions.
5. the utility model just can realize adjusting the purpose of beam-pumping unit jig frequency by the rotating speed of by-pass cock reluctance motor, realizes that jig frequency is adjustable in real time.
Description of drawings
Fig. 1 is schematic perspective view of the present utility model.
Fig. 2 is front view of the present utility model.
Fig. 3 is transmission diagram of the present utility model.
Fig. 4 is counterweight schematic diagram of the present utility model.
Fig. 5 is the special perspective exploded view that connects of the present utility model.
in figure: 1. motor, 2. shaft coupling, 3. reducer, 4. torque sensor, 5. brake, 6. rear synchronous pulley, 7. preamble belt wheel, 8. Timing Belt, 9. descend duplex chain wheel, 10. chain, 11. specific links, 12. cylinder, 13. cross slide way, 14. upper duplex chain wheel, 15. upper duplex chain wheel guide rail, 16. setting guide rail, 17. wire rope, 18. sucker rod, 19. upper fixed pulley, 20. lower fixed pulley, 21. front jockey wheel, 22. rear directive wheel, 23. main counterweight, 24. adjustable counter balance, 25. counter weight base, 26. main couple, 27. pedestal, 28. front and back support, 29. regulating wheel, 30. pull pressure sensor, 31. electric pushrod, 32. tension pulley support, 33. connecting axle, 34. upper duplex chain wheel guide rail, 35. counterweight motor, 36. lifting arm, 37. buffer spring, 38. weight guide, 39. snap ring, 40. reinforcing sleeve, 41. thickening carrier bar, 42. chain link shaft, 43. bearing pin.
The specific embodiment
Consult Fig. 1, the utility model is to be grouped into by support section, running part and counterweight adjusting portion;
Participate in Fig. 1 and Fig. 2, described support section comprises pedestal 27, main couple 26 and front and back support 28.
Described pedestal with 27 in mounted motor 1, reducer 3, torque sensor 4, brake 5 and main couple 26 etc.Pedestal 27 fixes on the ground by stone bolt, and main couple 26 is fixed on pedestal 27, and front and back support 28 is fixed on main couple 26 both sides, front and back;
Consult Fig. 1, Fig. 2, Fig. 3 and Fig. 5, described running part comprises motor 1, shaft coupling 33, reducer 3, torque sensor 4, brake 5, two preamble belt wheels 7, synchronous pulley 6, two Timing Belts 8, two lower duplex chain wheels 9, chain 10, reversing arrangement, two upper duplex chain wheels 14, two upper duplex chain wheel guide rails 15, two setting guide rails 16, two cover tensioning apparatus, three snap rings 39, front jockey wheel 21, rear directive wheel 22, upper fixed pulley 19, lower fixed pulleys 20 form after two.
Described motor 1 adopts switched reluctance machines, and motor 1 is bolted on pedestal 27; Described reducer 3 adopts an end input, and two ends output type reducer, reducer 3 are bolted on pedestal 27; Described snap ring 39 is U-shaped, is arranged on front jockey wheel 21, rear directive wheel 22 and lower fixed pulley 20, prevents that wire rope from jumping out the race of front jockey wheel 21, rear directive wheel 22 and lower fixed pulley 20 in motion process.
Described upper duplex chain wheel 14 can slide up and down in upper duplex chain wheel guide rail 15, stroke according to the actual requirements, and the position of duplex chain wheel 14 in upper duplex chain wheel guide rail 15 in adjusting, and by bearing pin 43 be bolted in upper duplex chain wheel guide rail 15.
Described reversing arrangement comprises specific links 11, cross slide way 13, erects guide rail 16 and cylinder 12.
Described specific links 11 comprises cylinder 12, two thickening carrier bars 41, two reinforcing sleeves 40, two bearing pins 43 and four chain link shafts 42.Described thickening carrier bar 41 adds boss rank on original carrier bar, boss has a pin-and-hole on rank, is used for interfixing with reinforcing sleeve 40; Described reinforcing sleeve 40 is inner concave shape, and there is pin-and-hole groove both sides, and groove coordinates with thickening carrier bar 41, interfixes by bearing pin 43; Described chain link shaft 42 passes from the through hole of thickening carrier bar 41 than original chain link axial length, is connected with other three carrier bars.By specific links 11, the active force of wire rope 17 is shared to two chain link shafts, improved reliability, increase the service life; Described cylinder 12 is arranged in cross slide way 13, and can horizontally slip in cross slide way 13; Respectively there is pulley at cross slide way 13 two ends, slide up and down in erectting guide rail 16.
Described tensioning apparatus comprises regulating wheel 29, pull pressure sensor 30, electric pushrod 31 and tension pulley support 32, described electric pushrod 31 is bolted on main couple 26, electric pushrod 31 outputs pull pressure sensor 30 1 ends that are threaded, pull pressure sensor 30 other ends are threaded on tension pulley support 32, regulating wheel 29 is arranged on tension pulley support 32, and meshes with chain 10.By the pressure between pull pressure sensor 30 detection regulating wheels 29 and chain 10, come the tensioning degree of adjusting chain 10, make the tensioning degree of chain 10 in operation process remain in certain limit, thereby make the synchronism of two chains 10 better, reduce energy consumption.
motor 1 output shaft is connected with shaft coupling 2 left ends by key, shaft coupling 2 right-hand members are connected with reduction box 3 power shafts by key, reduction box 3 left end output shafts are connected with torque sensor 4 right-hand members, reduction box 3 right-hand member output shafts are connected with brake 5 inputs, after one, synchronous pulley 6 is connected with torque sensor 4 left ends, after another, synchronous pulley 6 is connected with brake 5 right-hand members, after two, synchronous pulley 6 passes to two preamble belt wheels 7 that structure is identical by the identical Timing Belt 8 of two-strip structure with moment of torsion, two identical preamble bands 7 of structure pass through two connecting axles 33 and two lower duplex chain wheel 9 connections that structure is identical that structure is identical, two identical lower duplex chain wheels 9 of structure drive the identical chain 10 of two-strip structure and realize shuttling movement, by reversing arrangement, the circular motion of two structure same chain 10 is changed into moving up and down of reversing arrangement, reversing arrangement is fixedly connected with wire rope 17, wire rope 17 is from passing between front jockey wheel 21 and snap ring 39 and between rear directive wheel 22 and snap ring 39, difference connecting with pumping rod and counterweight, thereby driving sucker rod and counterweight moves up and down, realize oil pumping function,
Consult Fig. 1 and Fig. 4, described counterweight adjusting portion is divided and is comprised main counterweight 23, adjustable counter balance 24, counter weight base 25, counterweight motor 35, lifting arm 36, buffer spring 37 and weight guide 38;
Described main counterweight 23 is cylinder, and its quality is fixed value, and its both sides are equipped with two directive wheels, slide up and down in weight guide 38; Described adjustable counter balance 24 is comprised of two circular arc bodies, circular arc body is that cylinder is divided into some equal portions, cylinder is divided into eight parts in the present embodiment, every a shape is identical, and one group of adjustable counter balance 24 of two parts of compositions that the position is relative is divided into four groups of adjustable counter balances in the present embodiment, the quality of four groups is different, can be set as according to demand the quality of different brackets, a groove be arranged below every portion, be used for the counterweight that lifting arm 36 promotes different qualities; Described buffer spring 37 is that four identical spring and spring bases of structure form, spring base is used for fixing spring, spring base is arranged on respectively in the above and below of left rail above and below in weight guide 38 and right rail, when main counterweight 23 moved up and down in weight guide 38, buffer spring 37 played spacing and storage power and the effect that releases energy; Described lifting arm 36 is comprised of cylinder and the fan type body with two flabellums, and counterweight motor 35 drives lifting arms 36 rotations, and two flabellums rotate in the groove of adjustable counter balance 24, select the adjustable counter balance of different quality; There are four through holes to be used for being fixed on pedestal 27 on described counter weight base 25 base plates; Described weight guide 38 is arranged on counter weight base 27, and four buffer springs 37 that structure is identical be used for to be installed, and as the guide rail of the directive wheel of main counterweight 23 both sides.
Counter weight base 25 is fixed on pedestal 25, adjustable counter balance 24 is placed on counter weight base 25, wire rope 17 is connected on main counterweight 23, counterweight motor 35 is fixed on main counterweight 23, when dropping on minimum point, counterweight motor 35 drives lifting arm 36 rotations, selects suitable adjustable counter balance 24 when counterweight (weight mass equals main counterweight 23 quality and adds adjustable counter balance 24 quality), rear counterweight is raised, and realizes dynamic counterweight.
The course of work of the present utility model and principle:
Consult illustrated in figures 1 and 2, at first determine motor 1 parameter according to actual condition, drive two chain 10 cycle operation by motor 1, reducer 3, rear synchronous pulley 6, preamble belt wheel 7 and lower duplex chain wheel 9, pass through reversing arrangement, the cycle operation of chain 10 is converted into the straight reciprocating motion up and down of reversing arrangement, drive wire rope 17, sucker rod are realized oil pumping function.At the oil pumper duration of work, the tensioning degree of chain 10 can drive by the measurement of pull pressure sensor 30 electric pushrod and realize regulating.The quality of adjustable counter balance 24 is according to the Signal Regulation of torque sensor 4, and when each counterweight dropped on counter weight base 25, counterweight motor 35 drove the different angle of lifting arm rotation, thereby promotes different quality counterweights, realizes the mode of dynamic counterweight.

Claims (2)

1. a single motor bilateral drives energy-saving chain pumping unit, and it is characterized in that: the present invention is grouped into by support section, running part and counterweight adjusting portion;
Described support section comprises pedestal (27), main couple (26) and front and back support 28; Described pedestal (27) is used for mounted motor (1), reducer (3), torque sensor (4), brake (5) and main couple (26), and pedestal (27) fixes on the ground by stone bolt;
described running part comprises motor (1), shaft coupling (33), reducer (3), torque sensor (4), brake (5), two preamble belt wheels (7), synchronous pulley after two (6), article two, Timing Belt (8), two lower duplex chain wheels (9), chain (10), reversing arrangement, two upper duplex chain wheels (14), two upper duplex chain wheel guide rails (15), two setting guide rails (16), two cover tensioning apparatus, three snap rings (39), front jockey wheel (21), rear directive wheel (22), upper fixed pulley (19), lower fixed pulley (20) forms, described motor (1) adopts switched reluctance machines, described reducer (3) adopts an end input, two ends output type reducer, described snap ring (39) is U-shaped, is arranged on front jockey wheel (21), rear directive wheel (22) and lower fixed pulley (20), described upper duplex chain wheel (14) can slide up and down in upper duplex chain wheel guide rail (15), stroke according to the actual requirements, and by bearing pin (43) be bolted in upper duplex chain wheel guide rail (15),
Described tensioning apparatus comprises regulating wheel (29), pull pressure sensor (30), electric pushrod (31) and tension pulley support (32), described electric pushrod (31) is bolted on main couple (26), electric pushrod (31) output pull pressure sensor (30) one ends that are threaded, pull pressure sensor (30) other end is threaded on tension pulley support (32), regulating wheel (29) is arranged on tension pulley support (32), and meshes with chain (10);
described motor (1) output shaft is connected with shaft coupling (2) left end by key, shaft coupling (2) right-hand member is connected with reduction box (3) power shaft by key, reduction box (3) left end output shaft is connected with torque sensor (4) right-hand member, reduction box (3) right-hand member output shaft is connected with brake (5) input, rear synchronous pulley (6) is connected with torque sensor (4) left end, and by Timing Belt (8), moment of torsion is passed to preamble belt wheel (7), preamble band (7) is connected with lower duplex chain wheel (9) by connecting axle (33), lower duplex chain wheel (9) chain drive-belt (10) is realized shuttling movement, by reversing arrangement, the circular motion of chain (10) is changed into moving up and down of reversing arrangement, reversing arrangement is fixedly connected with wire rope (17), wire rope (17) is from passing between front jockey wheel (21) and snap ring (39) and between rear directive wheel (22) and snap ring (39), difference connecting with pumping rod and counterweight, thereby driving sucker rod and counterweight moves up and down, realize oil pumping function.
2. drive energy-saving chain pumping unit according to single motor bilateral claimed in claim 1, it is characterized in that: described counterweight adjusting portion is divided and is comprised main counterweight (23), adjustable counter balance (24), counter weight base (25), counterweight motor (35), lifting arm (36), buffer spring (37) and weight guide (38); Described buffer spring (37) is that four identical spring and spring bases of structure form, spring base is arranged on respectively in the above and below of left rail above and below in weight guide (38) and right rail, when main counterweight (23) moves up and down in weight guide (38); Described lifting arm (36) is comprised of cylinder and the fan type body with two flabellums, and counterweight motor (35) drives lifting arm (36) rotation, and two flabellums rotate in the groove of adjustable counter balance (24); Described weight guide (38) is arranged on counter weight base (27), and four buffer springs (37) that structure is identical be used for to be installed, and as the guide rail of the directive wheel of main counterweight (23) both sides; Described counter weight base (25) is fixed on pedestal (25), and adjustable counter balance (24) is placed on counter weight base (25), and wire rope (17) is connected on main counterweight (23), and counterweight motor (35) is fixed on main counterweight (23).
CN 201320253638 2013-05-12 2013-05-12 Single-motor double-sided driving energy-saving chain type oil pumping unit Expired - Fee Related CN203271686U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320253638 CN203271686U (en) 2013-05-12 2013-05-12 Single-motor double-sided driving energy-saving chain type oil pumping unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320253638 CN203271686U (en) 2013-05-12 2013-05-12 Single-motor double-sided driving energy-saving chain type oil pumping unit

Publications (1)

Publication Number Publication Date
CN203271686U true CN203271686U (en) 2013-11-06

Family

ID=49502124

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320253638 Expired - Fee Related CN203271686U (en) 2013-05-12 2013-05-12 Single-motor double-sided driving energy-saving chain type oil pumping unit

Country Status (1)

Country Link
CN (1) CN203271686U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103233705A (en) * 2013-05-12 2013-08-07 吉林大学 Single-motor bilateral-drive energy-saving chain type pumping unit
CN104329058A (en) * 2014-10-21 2015-02-04 胜利油田新大管业科技发展有限责任公司 Synchronous belt-reversing pumping unit and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103233705A (en) * 2013-05-12 2013-08-07 吉林大学 Single-motor bilateral-drive energy-saving chain type pumping unit
CN104329058A (en) * 2014-10-21 2015-02-04 胜利油田新大管业科技发展有限责任公司 Synchronous belt-reversing pumping unit and method

Similar Documents

Publication Publication Date Title
CN102795552B (en) Lifting drive mechanism of travelling crane
CN203271686U (en) Single-motor double-sided driving energy-saving chain type oil pumping unit
CN101424178B (en) Crank block type pumping unit
CN103233705A (en) Single-motor bilateral-drive energy-saving chain type pumping unit
CN201817635U (en) Transmission mechanism for lifting knives of jacquard
US20240044231A1 (en) Multi-phase controlled multi-well pumping unit
CN201027534Y (en) Multi-rope double-cylinder compound-wound friction-type oil-pumping machine
CN2799902Y (en) Chain driven pumping unit
CN102400666A (en) Multilevel-deceleration and multilevel-balance oil pumping unit
CN201963272U (en) Energy-saving fully-balanced pumping unit
CN209430172U (en) A kind of black soy sauce energy-saving balance beam type pumping machine
CN201317571Y (en) Conveying device of work pieces
CN201560752U (en) Double-well linear pumping unit
CN206958195U (en) A kind of steady drive stepless speed variator of lever rigidity high pulling torque
CN208203237U (en) Long stroke pumping unit
CN203545116U (en) Rocker mechanism capable of rocking back and forth to move wall and floor tiles
CN202251763U (en) Self-operated belt tensioner
CN202100241U (en) Slide block type positive torsion oil pumping unit
CN101201000A (en) Flexible driving mechanism oil pumping device
CN201321845Y (en) Balancing energy-saving box-type walking beam well pumping unit
CN202955196U (en) Chain transmission reversing device of beam-pumping unit
CN107178597A (en) A kind of steady drive stepless speed variator of the rigid high pulling torque of lever
CN208700354U (en) Synchronous belt tension device
CN102155190A (en) Pulley stroke-lengthening beam pumping unit
CN202690016U (en) Half-beam pumping unit

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131106

Termination date: 20140512