CN103556975B - Assembly pulley stroke-increasing pumping unit - Google Patents

Assembly pulley stroke-increasing pumping unit Download PDF

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Publication number
CN103556975B
CN103556975B CN201310569426.4A CN201310569426A CN103556975B CN 103556975 B CN103556975 B CN 103556975B CN 201310569426 A CN201310569426 A CN 201310569426A CN 103556975 B CN103556975 B CN 103556975B
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China
Prior art keywords
fixed pulley
fixed
pulley group
directive wheel
guide rail
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CN201310569426.4A
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CN103556975A (en
Inventor
李兆胜
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Deyang Heng Lian Machinery Manufacturing Co., Ltd.
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李兆胜
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Abstract

The invention discloses a kind of assembly pulley stroke-increasing pumping unit, comprise base, driving mechanism, driving wheel, lifting rope, directive wheel and extended-range device, described extended-range device comprises the first fixed pulley group, second fixed pulley group, guide rail and the walking dolly be arranged on guide rail, described guide rail is fixed on above base, described first fixed pulley group is arranged on rail end, described second fixed pulley group is fixed on walking dolly, described driving mechanism is connected with the driving wheel be fixed on base, described driving wheel is connected with walking dolly and drives walking dolly to do straight reciprocating motion on guide rail, described directive wheel is fixedly installed on above guide rail, and one end of described lifting rope is fixed end, and the other end, then to be connected with wellhead oil pumping device by directive wheel around backward through the first fixed pulley group and the second fixed pulley group.The present invention can start oil pumper fast, reposefully, just can realize steady oil pumping without the need to motor positive and inverse, and enables the stroke of oil pumper reach more than 6m.

Description

Assembly pulley stroke-increasing pumping unit
Technical field
The present invention relates to a kind of oil recovery machiner technical field, relate in particular to a kind of assembly pulley stroke-increasing pumping unit.
Background technology
In prior art, oil exploitation mainly adopts beam pumping unit to be extracted out from oil well by oil.At present, conventional beam pumping unit is generally made up of polished rod eye, horse head, walking beam, frame, connecting rod, reducer, crank, bascule, base, frame and motor etc., but due to horse head and oil pumper overall weight, cause that beam pumping unit also exists difficulty in starting, power consumption is large, manufacturing cost is high, easy damage and the shortcoming such as maintenance cost is high.
In order to solve the problem, in prior art, propose following technology:
As China Patent No. " 89201812.7 " discloses a kind of Wide-band type long-stroke, its publication date is on 08 23rd, 1989, its technical scheme is that described oil pumper is by base, motor, reducer, cylinder, third wheel, flexible wide belt, frame, the Wide-band type long-stroke of balance basket composition, it is characterized in that, at frame top, rotation crown's nest is housed, multistrand rope group is adopted to connect between polished rod eye and balance basket, pin safety device is equipped with in the bottom of balance basket, flexible wide belt adopts wedge belt lacings with the connection of other parts, eccentric wheel stroke adjuster chain deceleration device is equipped with.But take wide-band beam-pumping unit as the prior art of representative, in oil pumping process, mainly realize commutation (namely upstroke becomes down stroke or down stroke change upstroke) by the rotating of motor, such as oil pumper is per minute completes four jig frequencies, so motor wants rotating eight times in per minute, per minutely all can cause eight large impacts to electrical network, thus cause the electromagnetic pulse of power grid high-frequency, large frequency, cause the poor stability of oil pumper; Further, if multiple stage oil pumper works simultaneously, be not only difficult to power supply, also can cause considerable damage to electrical network.
And for example China Patent No. " 201320012011.2 " discloses the interactive single driven wheel of a kind of multifunctional dual-arm from variable-speed well pumping unit, its publication date is on October 02nd, 2013, its technical scheme is describedly comprise boom assembly, lifting rope, wellhead oil pumping device, driving wheel, toggle, the first power arm and the second power arm from variable-speed well pumping unit, driving wheel is connected with gear, toggle is fixing on the drive wheel, one end of first power arm is flexibly connected with toggle, and the other end is provided with fixed pulley and lifting rope fixing hole; Second power arm one end is flexibly connected with the first power arm, and the other end is provided with fixed pulley, and the second power arm is provided with basic point, and the second power arm is reciprocating along basic point; One end of lifting rope is fixedly connected with wellhead oil pumping device by the fixed pulley on boom assembly, and the other end is respectively by the lifting rope fixing hole be fixed on after the fixed pulley on the second power arm and the first power arm on the first power arm.But this patent in actual use, due to structure and load-bearing, the stroke of this oil pumper can only reach 3 meters, and stroke is less, effectively can not extract more oil from oil well, there is the shortcoming that the scope of application is narrow.
Summary of the invention
The object of the invention is to solve the problems referred to above that in prior art, oil pumper exists, a kind of assembly pulley stroke-increasing pumping unit is provided, the present invention can start oil pumper fast, reposefully, just can realize steady oil pumping without the need to motor positive and inverse, and enables the stroke of oil pumper reach more than 6m.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of assembly pulley stroke-increasing pumping unit, it is characterized in that: comprise base, driving mechanism, driving wheel, lifting rope, directive wheel and extended-range device, described extended-range device comprises the first fixed pulley group, second fixed pulley group, guide rail and the walking dolly be arranged on guide rail, described guide rail is fixed on above base, described first fixed pulley group is arranged on rail end, described second fixed pulley group is fixed on walking dolly, described driving mechanism is connected with the driving wheel be fixed on base, described driving wheel is connected with walking dolly and drives walking dolly to do straight reciprocating motion on guide rail, described directive wheel is fixedly installed on above guide rail, and one end of described lifting rope is fixed end, and the other end, then to be connected with wellhead oil pumping device by directive wheel around backward through the first fixed pulley group and the second fixed pulley group.
Described directive wheel comprises the first directive wheel, the second directive wheel and the 3rd directive wheel, described first directive wheel and the second directive wheel are fixedly installed on above the second fixed pulley group both sides respectively, described 3rd directive wheel is fixedly installed on boom assembly, described lifting rope through the first fixed pulley group and the second fixed pulley group around backward, more successively by being fixedly connected with wellhead oil pumping device after the first directive wheel, the second directive wheel, the 3rd directive wheel and the fixed pulley on boom assembly.
Described first directive wheel and the second directive wheel tangent in plane of projection, the same side, described second directive wheel and the 3rd directive wheel tangent in same level plane of projection.
In described first fixed pulley group, the quantity of fixed pulley is 5, in described second fixed pulley group, the quantity of fixed pulley is 4, fixed pulley in two fixed pulley groups is parallel mutually and form a line, the fixed end of described lifting rope is fixed on one of them fixed pulley at the first fixed pulley group two ends, all the other 4 fixed pulleys in the first fixed pulley group coordinate with 4 fixed pulleys in the second fixed pulley group lifting rope around to.
Described first fixed pulley group is fixed on the end of guide rail, and in the first fixed pulley group, the height of fixed pulley is identical with the height of fixed pulley in the second fixed pulley group.
Described base is fixedly installed two bracing frames, described driving wheel and one of them bracing frame are rotationally connected; Described guide rail is fixed on above base by another bracing frame and column.
Two toggles and two pull bars are also provided with between described driving wheel and walking dolly, described two toggle symmetries are fixed on driving wheel both sides, described two pull bars are symmetricly set on driving wheel both sides, described walking dolly is provided with connecting axle, and the two ends of described pull bar are flexibly connected with connecting axle and toggle respectively.
Described guide rail is provided with protective cover, and described guide rail, walking dolly, the first fixed pulley group and the second fixed pulley group are all positioned at protective cover.
Support bar is fixedly installed between described protective cover and column.
Be provided with between described boom assembly and protective cover to balance and restrict, the two ends of balance rope are fixedly connected with protective cover with boom assembly respectively.
Described lifting rope comprise be positioned at the first fixed pulley group with in the second fixed pulley group around to lifting rope and the connection lifting rope that is connected with wellhead oil pumping device, be describedly at least two around to lifting rope, two around to lifting rope all be connected lifting rope and be connected.
Described driving mechanism comprises the motor be fixedly installed on base, speed changer and reducer, speed changer is connected with motor by belt pulley, reducer is connected with speed changer by cross power transmission shaft, manual brake and the brake lever controlling manual brake is provided with between cross power transmission shaft and speed changer, be provided with reduction gearing in reducer, reduction gearing engages with driving wheel outer.
Employing the invention has the advantages that:
One, in the present invention, by by the first fixed pulley group, the second fixed pulley group, guide rail be arranged on the extended-range device that the walking dolly on guide rail forms, the circular motion of driving wheel is converted to the straight reciprocating motion of walking dolly, recycle the first fixed pulley group and the stroke of oil pumper just can be brought up to more than 6m by the second fixed pulley group, not only be suitable for the oil pumping of grease hole, also suitable especially use mid-term or late period oil well oil pumping, be conducive to from oil well, extract more oil.In addition, oil pumper to be coordinated with driving wheel by driving mechanism pumps, and just can realize steady oil pumping without the need to motor positive and inverse, driving wheel in oil pumping process stressed evenly, be not easy to damage, be conducive to the long service life improving driving wheel; And, in the upstroke and down stroke running of oil pumping, driving wheel movement velocity is consistent, can not produce pulse current, the startup of oil pumper is easier, and safety is higher, the electricity consumed is less, not only save electric energy, reduced cost of production, also overcomed in prior art easily because " shaking electric " phenomenon causes the problem of device damage.Compared with the prior art being representative with China Patent No. " 201220703323.3 ", the present invention also has the advantage that mechanical movement is simple, easy to operate, accident rate is low and maintenance cost is little.
Two, in the present invention, not only reduced the frictional force of lifting rope and each parts by three directive wheels, also make the load-bearing of lifting rope evenly, be conducive to reducing the spoilage of lifting rope.
Three, in the present invention, described first directive wheel and the second directive wheel tangent in plane of projection, the same side, described second directive wheel and the 3rd directive wheel tangent in same level plane of projection, this structure further increases the uniformity of lifting rope load-bearing, not only be conducive to the application life of improving lifting rope, the safety of oil pumping can also be improved.
Four, in the present invention, in the first fixed pulley group, the quantity of fixed pulley is set to 5, and in the second fixed pulley group, the quantity of fixed pulley is set to 4, and this structure not only enables oil pumper reach 6m with upstroke, also makes the volume of whole oil pumper smaller and more exquisite.
Five, in the present invention, described first fixed pulley group is fixed on the end of guide rail, and in the first fixed pulley group, the height of fixed pulley is identical with the height of fixed pulley in the second fixed pulley group, and this structure is conducive to improving the stability of extended-range device in oil pumping process.
Six, in the present invention, described base is fixedly installed two bracing frames, described driving wheel and one of them bracing frame are rotationally connected; Described guide rail is fixed on above base by another bracing frame and column, makes the stability of driving wheel and extended-range device better.
Seven, in the present invention, by the cooperation of two toggles, two pull bars and connecting axle, the circular motion of driving wheel stably can be converted into the straight reciprocating motion of walking dolly, make the flexibility of walking dolly in motion process higher, oil pumping process is more stable.
Eight, in the present invention; because oil pumper works in the wild, the protective cover therefore guide rail arranged can play better protective effect to extended-range device, prevents dust storm from entering extended-range device inside; dust storm can be avoided to affect the stable operation of extended-range device, be conducive to the safety of oil pumper.
Nine, in the present invention, between described protective cover and column, be fixedly installed support bar, be conducive to by support bar the steadiness improving whole oil pumper.
Ten, in the present invention, be provided with to balance and restrict between described boom assembly and protective cover, balance rope can play firm effect by column, prevents column from tilting.
11, in the present invention, when stroke due to oil pumper reaches 6m, it bears a heavy burden at about 16 tons, needs to use very thick lifting rope guarantee steadily to pump, if but use very thick lifting rope, fixed pulley group also exist again around to shortcomings such as inconveniences, therefore can adopt two diameters less around to lifting rope, can not only solve the problem, the safety of oil pumping can also be improved, namely when one around after lifting rope fracture, another root lifting rope can also support oil pumping.
12, in the present invention, described driving mechanism comprises the motor be fixedly installed on base, speed changer and reducer, wherein speed changer is one-level speed changing structure, reducer is two stage speed change structure, the structure being driven driving wheel by reducer is three-step gear shift structure, adopt three-step gear shift structure, effectively overcome the problems such as the grid power blackout caused because of so-called " shake electricity " phenomenon, jig frequency and the stroke speed of oil pumper can be adjusted at any time neatly according to the change of oil mass in oil well, make whole oil pumping process more steady, be conducive to significantly improving pumping efficiency; Manually brake and brake lever, can also prevent the generation of security incident in time, improve safety in utilization.
13, in the present invention, motor only needs to start once, and just can complete the up-down stroke motion of oil pumper, starting current is little, can not produce pulse current and destroy electrical network; Mechanical movement after startup is steady, and the vibrations of generation are very little, and the reliability of oil pumper is higher.
14, in the present invention, oil pumper does not need auxiliary equipment, just can realize the change of jig frequency and jig frequency speed within one minute easily, can according to the actual conditions of oil well, and adopt suitable jig frequency oil pumping, pumping efficiency is higher.
15, the present invention also can be used for short stroke oil pumping, when pumping for short stroke, only needs the quantity reducing fixed pulley group middle pulley just can realize, applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when down stroke.
Fig. 2 is the structural representation of the present invention when upstroke.
Fig. 3 is the structural representation of extended-range device in the present invention.
Fig. 4 be in the present invention extended-range device be connected with driving wheel after structural representation.
Be labeled as in figure: 1, base, 2, column, 3, boom assembly, 4, driving wheel, 5, lifting rope, 6, wellhead oil pumping device, 7, toggle, 8, pull bar, the 9, first fixed pulley group, 10, the second fixed pulley group, 11, guide rail, 12, walking dolly, 13, the first directive wheel, the 14, second directive wheel, the 15, the 3rd directive wheel, 16, bracing frame, 17, connecting axle, 18, support bar, 19, balance rope, 20, motor, 21, speed changer, 22, reducer, 23, belt pulley, 24, cross power transmission shaft, 25, manual brake, 26, brake lever.
Detailed description of the invention
Embodiment 1
A kind of assembly pulley stroke-increasing pumping unit, comprise base 1, driving mechanism, driving wheel 4, lifting rope 5, directive wheel and extended-range device, described extended-range device comprises the first fixed pulley group 9, second fixed pulley group 10, guide rail 11 and the walking dolly 12 be arranged on guide rail 11, described guide rail 11 is horizontally fixed on above base 1, described first fixed pulley group 9 is arranged on guide rail 11 end, described second fixed pulley group 10 is fixed on walking dolly 12, described driving mechanism is connected with the driving wheel 4 be fixed on base 1, described driving wheel 4 is connected with walking dolly 12 and drives walking dolly 12 to do straight reciprocating motion on guide rail 11, described directive wheel is fixedly installed on above guide rail 11, and one end of described lifting rope 5 is fixed end, and the other end, then to be connected with wellhead oil pumping device 6 by directive wheel around backward through the first fixed pulley group 9 and the second fixed pulley group 10.
In the present embodiment, the other end of described lifting rope 5 through the first fixed pulley group 9 and the second fixed pulley group 10 around to after referring to the fixed pulley that lifting rope 5 is often walked around in the first fixed pulley group 9, correspondence walks around a corresponding fixed pulley in the second fixed pulley group 10 again, until fixed pulley in two fixed pulley groups is all by around complete.
In the present embodiment, described guide rail 11 is made up of two parallel channel-section steels, and described walking dolly 12 comprises four symmetrical wheels, and four wheels are positioned at channel-section steel, walking dolly 12, can straight reciprocating motion in the guide rail 11 formed by channel-section steel under the drive of driving wheel 4 and pull bar 8; Further, in order to strengthen the flexibility that walking dolly 12 runs, lubrication oil can be set in guide rail 11.
The preferred embodiment of the present embodiment is, described directive wheel comprises the first directive wheel 13, second directive wheel 14 and the 3rd directive wheel 15, described first directive wheel 13 and the second directive wheel 14 are fixedly installed on above the second fixed pulley group 10 both sides respectively by support, described 3rd directive wheel 15 is fixedly installed on boom assembly 3, and described first directive wheel 13 and the second directive wheel 14 tangent in plane of projection, the same side, described second directive wheel 14 and the 3rd directive wheel 15 tangent in same level plane of projection, described lifting rope 5 through the first fixed pulley group 9 and the second fixed pulley group 10 around backward, again successively by the first directive wheel 13, second directive wheel 14, 3rd directive wheel 15 is fixedly connected with wellhead oil pumping device 6 with after the fixed pulley on boom assembly 3.
The another preferred embodiment of the present embodiment is, described first fixed pulley group 9 is fixed on the end of guide rail 11 by support, and the height of fixed pulley is identical with the height of fixed pulley in the second fixed pulley group 10 in the first fixed pulley group 9, so that when ensureing dolly straight reciprocating motion, the fixed pulley uniform force of determining in cunning and the second fixed pulley group 10 in the first fixed pulley group 9; Such as, but be not limited to above-mentioned preferred embodiment, the first fixed pulley group 9 is also fixed on guide rail 11 end by the support be arranged on base 1.
The another preferred embodiment of the present embodiment is, described base 1 is fixedly installed two bracing frames 16, and described driving wheel 4 is rotationally connected with one of them bracing frame 16; One end of described guide rail 11 is fixed on above base 1 by another bracing frame 16, the other end is fixed in column 2, to strengthen the overall steadiness of oil pumper, but be not limited to above-mentioned preferred embodiment, such as the two ends of guide rail 11 are all fixed on above base 1 by bracing frame 16.
The another preferred embodiment of the present embodiment is, two toggles 7 and two pull bars 8 are also provided with between described driving wheel 4 and walking dolly 12, described two toggle 7 symmetries are fixed on driving wheel 4 both sides, described two pull bars 8 are symmetricly set on driving wheel 4 both sides, described walking dolly 12 is provided with connecting axle 17, and the two ends of described pull bar 8 are flexibly connected with connecting axle 17 and toggle 7 respectively.Driving wheel 4 circles under the driving of driving mechanism, and drive connecting axle 17 to make walking dolly 12 do straight reciprocating motion on guide rail 11 under the effect of toggle 7 and pull bar 8, wherein, the two ends of pull bar 8 are connected with connecting axle 17 and toggle 7 bearing respectively.
In the present embodiment, described first fixed pulley group 9 and the second fixed pulley group 10 lay respectively at the both sides being positioned at connecting axle 17, and preferably the first fixed pulley group 9 is positioned at driving and drives one end.
The another preferred embodiment of the present embodiment is, described driving mechanism comprises the motor 20 be fixedly installed on base 1, speed changer 21 and reducer 22, speed changer 21 is connected with motor 20 by belt pulley 23, reducer 22 is connected with speed changer 21 by cross power transmission shaft 24, manual brake 25 and the brake lever 26 controlling manual brake 25 is provided with between cross power transmission shaft 24 and speed changer 21, be provided with reduction gearing in reducer 22, reduction gearing engages with driving wheel 4 outer.Wherein, speed changer 21 preferably adopts five speed transmission 21, and preferably on speed changer 21, arranges action bars and clutch for regulating speed changer 21 gear, so just can as car gear shifting; do not shut down the rotating speed changing driving wheel 4 in real time, be conducive to from oil well, extract more oil out.
Embodiment 2
The present embodiment and above-described embodiment are substantially identical, the main distinction is: in described first fixed pulley group 9, the quantity of fixed pulley is preferably set to 5, in described second fixed pulley group 10, the quantity of fixed pulley is preferably set to 4, fixed pulley in two fixed pulley groups is parallel mutually and form a line, the fixed end of described lifting rope 5 is fixed on one of them fixed pulley at the first fixed pulley group 9 two ends, all the other 4 fixed pulleys in first fixed pulley group 9 coordinate with 4 fixed pulleys in the second fixed pulley group 10 lifting rope 5 around to, by above-mentioned preferred embodiment, the stroke of oil pumper is made to reach more than 6m.But be not limited to above-mentioned preferred embodiment, such as, also cooperatively interact change the stroke of oil pumper by adjusting the distance of the first fixed pulley group 9 and the second fixed pulley group 10, the quantity adjusting fixed pulley in the first fixed pulley group 9 and the second fixed pulley group 10, the length adjusting toggle 7 or above-mentioned several mode.
In the present embodiment, described first fixed pulley group 9 can be identical with the quantity of fixed pulley in the second fixed pulley group 10, and when in the first fixed pulley group 9 with the second fixed pulley group 10, the quantity of fixed pulley is identical, the fixed end of lifting rope 5 can be fixed on guide rail 11.
Embodiment 3
The present embodiment and above-described embodiment are substantially identical; the main distinction is: described guide rail 11 is provided with protective cover; described protective cover is fixed on guide rail 11; described guide rail 11, walking dolly 12, first fixed pulley group 9 and the second fixed pulley group 10 are all positioned at protective cover; so that prevent the impurity such as dust storm from entering extended-range device, thus affect the stable operation of extended-range device.Wherein, in order to the trouble-free operation of walking dolly 12, offer pilot hole in the two sides of protective cover, the length of pilot hole is identical with the straight-line displacement length of walking dolly 12 on guide rail 11, the width of pilot hole and the diameter of connecting axle 17 suitable; And for the ease of the connection of lifting rope 5 between fixed pulley group and directive wheel, protective cover also offers the guide hole for lifting rope 5.
The another preferred embodiment of the present embodiment is; support bar 18 is fixedly installed between described protective cover and column 2; further; be provided with between described boom assembly 3 and protective cover and balance rope 19; the two ends of balance rope 19 are fixedly connected with protective cover with boom assembly 3, respectively so that strengthen the overall steadiness of strong oil pumper.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, the main distinction is: described lifting rope 5 is divided into comprise be positioned at the first fixed pulley group 9 with in the second fixed pulley group 10 around to lifting rope 5 and the connection lifting rope 5 that is connected with wellhead oil pumping device 6, describedly be preferably two around the quantity to lifting rope 5, two around to lifting rope 5 all be connected lifting rope 5 and be connected, but also can be many around the quantity to lifting rope 5, concrete quantity is determined according to the stroke of oil pumper.
Operating principle of the present invention is: starter motor 20, motor 20 drives speed changer 21 to operate by belt pulley 23, speed changer 21 drives reducer 22 to operate by cross power transmission shaft 24 again, reduction gearing in reducer 22 drives driving wheel 4 to circle, driving wheel 4 drives walking dolly 12 to do straight reciprocating motion on guide rail 11 by two toggles 7 and two pull bars 8 again, when walking dolly 12 moves to column 2 direction, the second fixed pulley group 10 on walking dolly 12 drives lifting rope 5 to make wellhead oil pumping device 6 do upstroke motion, when walking dolly 12 is from column 2 end to the first fixed pulley group 9 direction motion, the second fixed pulley group 10 on walking dolly 12 drives lifting rope 5 to make wellhead oil pumping device 6 do down stroke motion, by driving wheel 4 circular motion stably, oil pumper is made to complete pumping operation reposefully.
Obviously; those of ordinary skill in the art is according to grasped technological know-how and customary means; according to above said content, can also make the various ways not departing from fundamental technics thought of the present invention, these pro forma conversion are all within protection scope of the present invention.

Claims (8)

1. an assembly pulley stroke-increasing pumping unit, it is characterized in that: comprise base (1), driving mechanism, driving wheel (4), lifting rope (5), directive wheel and extended-range device, described extended-range device comprises the first fixed pulley group (9), second fixed pulley group (10), guide rail (11) and the walking dolly (12) be arranged on guide rail (11), described guide rail (11) is fixed on base (1) top, described first fixed pulley group (9) is arranged on guide rail (11) end, described second fixed pulley group (10) is fixed on walking dolly (12), described driving mechanism is connected with the driving wheel (4) be fixed on base (1), described driving wheel (4) is connected with walking dolly (12) and drives walking dolly (12) to do straight reciprocating motion on guide rail (11), described directive wheel is fixedly installed on guide rail (11) top, and one end of described lifting rope (5) is fixed end, and the other end, then to be connected with wellhead oil pumping device (6) by directive wheel around backward through the first fixed pulley group (9) and the second fixed pulley group (10),
Described first fixed pulley group (9) is fixed on the end of guide rail (11), and in the first fixed pulley group (9), the height of fixed pulley is identical with the height of fixed pulley in the second fixed pulley group (10);
Described base (1) is fixedly installed two bracing frames (16), described driving wheel (4) and one of them bracing frame (16) are rotationally connected; Described guide rail (11) is fixed on base (1) top by another bracing frame (16) and column (2).
2. a kind of assembly pulley stroke-increasing pumping unit as claimed in claim 1, it is characterized in that: described directive wheel comprises the first directive wheel (13), second directive wheel (14) and the 3rd directive wheel (15), described first directive wheel (13) and the second directive wheel (14) are fixedly installed on above the second fixed pulley group (10) both sides respectively, described 3rd directive wheel (15) is fixedly installed on boom assembly (3), described lifting rope (5) through the first fixed pulley group (9) and the second fixed pulley group (10) around backward, again successively by the first directive wheel (13), second directive wheel (14), 3rd directive wheel (15) is fixedly connected with wellhead oil pumping device (6) with after the fixed pulley on boom assembly (3).
3. a kind of assembly pulley stroke-increasing pumping unit as claimed in claim 2, it is characterized in that: described first directive wheel (13) and the second directive wheel (14) tangent in plane of projection, the same side, described second directive wheel (14) and the 3rd directive wheel (15) tangent in same level plane of projection.
4. a kind of assembly pulley stroke-increasing pumping unit as claimed in claim 1 or 2, it is characterized in that: in described first fixed pulley group (9), the quantity of fixed pulley is 5, in described second fixed pulley group (10), the quantity of fixed pulley is 4, fixed pulley in two fixed pulley groups is parallel mutually and form a line, the fixed end of described lifting rope (5) is fixed on one of them fixed pulley at the first fixed pulley group (9) two ends, all the other 4 fixed pulleys in the first fixed pulley group (9) coordinate with 4 fixed pulleys in the second fixed pulley group (10) lifting rope (5) around to.
5. a kind of assembly pulley stroke-increasing pumping unit as claimed in claim 1, it is characterized in that: between described driving wheel (4) and walking dolly (12), be also provided with two toggles (7) and two pull bars (8), described two toggle (7) symmetries are fixed on driving wheel (4) both sides, described two pull bars (8) are symmetricly set on driving wheel (4) both sides, described walking dolly (12) is provided with connecting axle (17), the two ends of described pull bar (8) are flexibly connected with connecting axle (17) and toggle (7) respectively.
6. a kind of assembly pulley stroke-increasing pumping unit as described in claim 1,2 or 5; it is characterized in that: (11) are provided with protective cover to described guide rail, described guide rail (11), walking dolly (12), the first fixed pulley group (9) and the second fixed pulley group (10) are all positioned at protective cover.
7. a kind of assembly pulley stroke-increasing pumping unit as claimed in claim 6, is characterized in that: be fixedly installed support bar (18) between described protective cover and column (2).
8. a kind of assembly pulley stroke-increasing pumping unit as claimed in claim 1, it is characterized in that: described lifting rope (5) comprise be positioned at the first fixed pulley group (9) with in the second fixed pulley group (10) around to lifting rope (5) and the connection lifting rope (5) that is connected with wellhead oil pumping device (6), describedly be at least two around to lifting rope (5), two around to lifting rope (5) all be connected lifting rope (5) and be connected.
CN201310569426.4A 2013-11-13 2013-11-13 Assembly pulley stroke-increasing pumping unit Expired - Fee Related CN103556975B (en)

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CN203603852U (en) * 2013-11-13 2014-05-21 李兆胜 Stroke-extending type pumping unit for pulley block

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CN102777153A (en) * 2012-08-23 2012-11-14 李兆胜 Pumping unit with wide swing angle
CN103061719A (en) * 2013-01-10 2013-04-24 李兆胜 Multifunctional double arm interaction double-drive-wheel self-speed-changing pumping unit
CN203603852U (en) * 2013-11-13 2014-05-21 李兆胜 Stroke-extending type pumping unit for pulley block

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