CN108457624A - Long stroke pumping unit - Google Patents

Long stroke pumping unit Download PDF

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Publication number
CN108457624A
CN108457624A CN201810415768.3A CN201810415768A CN108457624A CN 108457624 A CN108457624 A CN 108457624A CN 201810415768 A CN201810415768 A CN 201810415768A CN 108457624 A CN108457624 A CN 108457624A
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CN
China
Prior art keywords
pair
fall block
sucker rod
counterweight
composite track
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Pending
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CN201810415768.3A
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Chinese (zh)
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张志勇
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张志勇
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Application filed by 张志勇 filed Critical 张志勇
Priority to CN201810415768.3A priority Critical patent/CN108457624A/en
Publication of CN108457624A publication Critical patent/CN108457624A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12Methods or apparatus for controlling the flow of the obtained fluid to or in wells

Abstract

A kind of long stroke pumping unit has pedestal, rack, sucker rod, the first guide rail, the second guide rail, counterweight, sucker rod fall block, counterweight fall block, driving wheel, flexible connecting member, holder, power drive unit.The top of sucker rod is fixedly connected with the pallet of sucker rod fall block, counterweight is set in the pallet of counterweight fall block, two the first composite track rollers are respectively installed before and after on the inside of the pallet of sucker rod fall block and form front and back pairs of the first composite track roller of two couples setting up and down, each pair of first composite track roller is respectively arranged in the concave tracks of a pair of first guide rail, two the second composite track rollers are respectively installed before and after on the inside of the pallet of counterweight fall block and form front and back pairs of the second composite track roller of two couples setting up and down, each pair of second composite track roller is respectively arranged in the concave tracks of a pair of second guide rail.The configuration of the present invention is simple, stroke is big, and securely and reliably, failure rate is low, energy saving, and service life is long.

Description

Long stroke pumping unit
Technical field
The present invention relates to a kind of pumping unit, especially a kind of long stroke pumping unit.
Background technology
Long stroke at present(Non- walking beam)Pumping unit has following several:1. Wide-band type long-stroke carries traditional electricity Machine speed reducer and direct driving motor(Similar servo motor);2. chain type oil pump, main problem is that chain is not durable, because of chain By lateral bending stress.Power is that conventional motor matches retarder;3. common electric machine equipped hydraulic pumps drive cylinder long stroke pumping unit, The pumping unit is that piston rod is fixed, and cylinder barrel movement, band movable pulley moves.
Inventor retrieves following Patents documents:CN201738896U discloses a kind of long-stroke roller oil pumping unit, Including:Pedestal, rack, counter-balanced carriage, motor, driving wheel, transmission belt fixed plate, shaft coupling, retarder.The counter-balanced carriage is by shaped steel Composition, the interior counterweight equipped with different weight of frame can accurately adjust balance.The rack is made of H profile steel, is the branch of complete machine Frame is the slideway of counterweight again, keeps structure extremely succinct.Frame lower, which is equipped with hinge, to fold back, and be readily transported.Driving wheel It front and back can finely tune, so that suspension point is precisely aligned well head and avoid well bar eccentric wear, extend the well workover period.CN201620834U discloses one Various shear connecting rod beamless oil extractors, pedestal lower end position are connected on pedestal, and motor is housed on the pedestal in stand frame, are led to Belt gear to be crossed with retarder to connect, the variable crank on reducer output shaft is connected by connecting rod with groove profile sliding block, Groove profile sliding block both sides are equipped with guide bearing and are connected with multistage double leval jib transmission mechanism by push-pull rod, multistage double leval jib transmission mechanism Upper-end part of driving is equipped with multiple tracks tension spring, and the multiple tracks tension spring other end is fixed with the spring for being fixed on the setting of movable pulley strut upper and lower respectively Bar connects, and there are symmetrical weighting distribution wheel and fixed pulley in cantilever tip position both sides, are carried respectively with suspension point by counterweight rope between two wheels Lotus is connected with counterweight.CN204186353U discloses a kind of two-way more well petroleum extractors of one machine of coaster double-balance, the steel Cord directive wheel is connect by steel wire rope with sucker rod, and the connecting rod is connected with coaster, and the pulley support of the coaster is in guide rail On, guide rail is fixed on the guide rail bracket, the crank is connect with connecting rod, and the motor is connected with retarder, the counterweight Block is fixed at the top of sucker rod, and the bottom of the frame is fixed on by foundation bolt in prefabricated concrete foundation, top carrying There are kinematic system, the oil pumping tree to be connected to the bottom of sucker rod.CN1944948A discloses a kind of stroke increased oil pumping machine, by closing Pylon, motor, joined v-belt, belt wheel, Hardened gear face cylindrical gear reducer, crank axle, connecting rod, two lower sprockets, two chains, Coaster, two swelling devices, two upper sprocket wheels, steel wire rope, front jocket wheel, polished rod eye, crossbeam, brake hub, brake, two rails Road, four rolling, with being reconstructed into.
How the above technology is for making pumping unit accomplish that simple in structure, stroke is big, safe and reliable, low energy consumption, using Long lifespan does not provide specific guidance program.
Invention content
Technical problem to be solved by the present invention lies in, a kind of long stroke pumping unit is provided, it is simple in structure, and stroke is big, Securely and reliably, failure rate is low, energy saving, and manufacturing cost is low, and service life is long.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:
A kind of long stroke pumping unit(Ultra long stroke beam-pumping unit in other words), with pedestal, be fixedly installed on pedestal rack, Sucker rod, its technical solution is that:The long stroke pumping unit also there is a pair first being fixedly installed on the left of rack to lead Rail(Sliding rail), the second guide rail of a pair for being fixedly installed on the right side of rack(Sliding rail), two pair of first composite track roller, two pair second Composite track roller, sucker rod fall block, counterweight fall block, driving wheel, with the driving wheel matches composition one at counterweight To the flexible connecting member, holder, power drive unit of kinematic pair.The pallet at the top and sucker rod fall block of the sucker rod It is fixedly connected, counterweight is set in the pallet of counterweight fall block, and two are respectively installed before and after the pallet inside of sucker rod fall block First composite track roller and form front and back the first composite track roller of two couples setting up and down in pairs, each first composite rolling wheel The mounting means of bearing is welding, and specific mounting means is exactly that the spindle nose of the first composite track roller and one piece is round-meshed Plate welds, then again with assembly and connection on the inside of the pallet of sucker rod fall block, each pair of first composite track roller and institute State that a pair of first guide rail is corresponding one by one, each pair of first composite track roller is respectively arranged in the spill of a pair of first guide rail Make in track a pair of first guide rail to sucker rod fall block guide and limit, on the inside of the pallet of counterweight fall block before and after respectively pacify It fills two the second composite track rollers and forms front and back pairs of the second composite track roller of two couples setting up and down, each second is multiple The mounting means for closing roller bearing is welding, and specific mounting means is exactly that the spindle nose of the second composite track roller and one piece are carried The plate of circular hole welds, then again with assembly and connection on the inside of the pallet of counterweight fall block, each pair of second composite track roller Corresponding one by one with the pair of second guide rail, each pair of second composite track roller is respectively arranged in a pair of second guide rail Make a pair of second guide rail to counterweight fall block guide and limit in concave tracks.The holder is mounted in rack, can be around branch The driving wheel of frame rotation is by the holder limited support, and flexible connecting member is by driving wheel and one end and the sucker rod of flexible connecting member The pallet of fall block is connected, and the other end of flexible connecting member is connected with the pallet of counterweight fall block, power drive dress The power output end set is connected with the power intake of driving wheel.
In above-mentioned technical proposal, preferred technical solution can be:The driving wheel, flexible connecting member quantity preferably all It is two.Above-mentioned driving wheel can be slot ring antenna, then flexible connecting member is round-link chain, and each slot ring antenna is preferably provided with two Driver slot(Two slot ring antennas are provided with four driver slots).Above-mentioned driving wheel can also be roller chain wheel, then flexible connecting member is Roller chain.Specifically roller chain wheel is board-like roller chain wheel, and flexible connecting member is board-like roller chain.Above-mentioned driving wheel is also Can be belt wheel, then flexible connecting member is drive belt, and wire-core is carried in drive belt.Above-mentioned holder is rack-mounted Concrete structure is preferably that the top of rack is fixedly connected with tablet easy to operation, which is operating platform, and tablet is from rack Front side, rear side, left side horizontally outward extend, jagged with sucker rod fall block corresponding section tablet band, that is, pumping The top relative position tablet band of bar fall block is jagged, and flexible connecting member is passed through from this notch, and the holder is fixed on flat The upper surface of plate, holder can be made of front side longitudinal plate, rear side longitudinal plate, and front side longitudinal plate, rear side longitudinal plate can be distinguished It is mutually neat with the front and rear sides of the frame of rack;Power drive unit can have speed regulating motor, that is, speed governing reversing motor(Speed governing tune To motor), planetary reducer, the pedestal of speed regulating motor, the pedestal of planetary reducer are all fixedly mounted on tablet Upper surface.Certainly, power drive unit is not limited in several structures stated below the application, and there are many different knots for it Configuration formula.First group of buffer for preventing sucker rod fall block from falling preferably is installed in said base and prevents counterweight from lifting Second group of buffer that coaster falls, first group of buffer are located at immediately below the pallet of sucker rod fall block, second group of buffering Device is located at immediately below the pallet of counterweight fall block, and first group of buffer and second group of buffer are all several buffering hydraulics Cylinder(For example it is all 2 ~ 3 buffering hydraulic cylinders).Each first composite track roller all has main roller, side wheel.Each second Composite track roller all has main roller, side wheel, each first composite track roller and each second composite track roller Structure is identical.Changzhou an ancient unit of weight may be used up to special type with each second composite track roller in each of described first composite track roller The composite track roller of bearing Co., Ltd production.
Long stroke pumping unit of the present invention also has the first guide rail of a pair being fixedly installed on the left of rack, fixed peace Loaded on the second guide rail of a pair on the right side of rack, two pair of first composite track roller, two pair of second composite track roller, counterweight, pumping Beam hanger fall block, driving wheel, matches the flexible connection for constituting a pair of of kinematic pair with the driving wheel at counterweight fall block Part, holder, power drive unit.In this way, two tracks and four composite track rollers are constituted and are glided on sucker rod fall block Dynamic kinematic pair, other two track and four additional composite track roller constitute the movement that counterweight fall block slides up and down Pair, so that it is guaranteed that two coasters can only be according to track(Sliding rail)Move towards move up and down, i.e., sucker rod fall block is led along first Rail walks up and down, and counterweight fall block walks up and down along the second guide rail, uses sucker rod fall block, the mesh of counterweight fall block Be in order to stablize sucker rod movement locus, make its reduce sideshake, effectively ensure sucker rod traveling comfort, avoid Sucker rod rubs by lateral force and with the borehole wall, leads to sucker rod premature failure and damages the borehole wall, extends service life, Work is more safe and reliable.The long stroke pumping unit of the present invention, stroke depends on the height and intensity of rack, as long as rack is done It is sufficiently high, stroke will reach corresponding height, moreover, stroke is longer, driving chain(Flexible connecting member)Use the longevity Life will be longer, and the efficiency of oil pumping also will be higher.The configuration of the present invention is simple, stroke(It is super)Greatly, securely and reliably, failure rate is low (Compared with having relevant pumping unit, failure rate of the present invention reduces 30% or more), it is easy to maintenance, light-weight, and low energy consumption (Compared with having relevant pumping unit, energy consumption of the present invention reduces 25% or more), adaptable, main screw lift is small, manufactures cost It is low(Compared with having relevant pumping unit, the present invention, which manufactures cost, reduces 28% or more), service life is long(To it is existing related Pumping unit compare, service life of the invention extends 30% or more).The present invention can be achieved to produce in enormous quantities, reach efficient Energy-efficient purpose.
In conclusion the long stroke pumping unit of the present invention is simple in structure, stroke is big(Ultra-long-stroke), securely and reliably, failure Rate is low, and repair is few, and low energy consumption, energy saving, and main screw lift is small, and manufacturing cost is low, and service life is long.
Description of the drawings
Fig. 1 is the structural diagram of the present invention(Front view).
Fig. 2 be Fig. 1 in A to view(Vertical view saves computer room 11).
Fig. 3 be in the present invention the first guide rail be connected with sucker rod fall block, the second guide rail and counterweight fall block phase The structural schematic diagram of connection(Vertical view).
Fig. 4 is a pair of first composite track roller and the matched structural schematic diagram of a pair of first guide rail in the present invention(It bows View);In Fig. 4(a)For a corresponding matched structural schematic diagram of the first guide rail of first composite track roller, In Fig. 4(b)For another first composite track roller and another matched structural schematic diagram of the first guide rail.
Specific implementation mode
To keep the goal of the invention, technical solution and advantage of the present invention clearer, below in conjunction with embodiment to the present invention Technical solution carry out clear, complete description.Obviously, described embodiments are some of the embodiments of the present invention, Er Feiquan Portion's embodiment.Based on the embodiment in invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1:As shown in Figure 1, Figure 2, Figure 3, Figure 4, long stroke pumping unit of the present invention has pedestal(Ground) 4, the rack 8 that is fixedly installed on pedestal, sucker rod 1, the first guide rail of a pair 802 and 802 ' for being fixedly installed in 8 left side of rack, It is fixedly installed in 803 and 803 ', two pair first of the second guide rail of a pair, 201 and 201 ', two pairs of the composite track roller on 8 right side of rack Second composite track roller 601 and 601 ', counterweight 7, sucker rod fall block 2, counterweight fall block 6, driving wheel 9, with it is described Driving wheel matches flexible connecting member 9 ', holder 10, the power drive unit for constituting a pair of of kinematic pair(Power source)14.Rack 8 With frame 800, reinforcing rib 801 is carried on frame 800.First guide rail 802 and 802 ', the second guide rail 803 and 803 ' and rack 8 It is fixed as one, is in integral structure, is i.e. four two pairs of sliding rails and frame, reinforcing rib form rack 8.The sucker rod 1 Top(Pass through dixie grip 12)It is fixedly connected with the pallet of sucker rod fall block 2, counterweight 7 is set to counterweight lifting and slides In the pallet of vehicle 6, on the inside of the pallet of sucker rod fall block 2(Inboard, i.e., on the right side of the pallet of sucker rod fall block)It is front and back each Two the first composite track rollers are installed and form front and back pairs of the first composite track roller of two couples 201,201 ' setting up and down, The mounting means of each first composite track roller is welding, and specific mounting means is exactly the spindle nose the first composite track roller With one piece of round-meshed plate welding, then again with assembly and connection on the inside of the pallet of sucker rod fall block.Each pair of described first Composite track roller 201,201 ' and the pair of first guide rail 802,802 ' are corresponding one by one, each pair of first composite rolling wheel Bearing 201,201 ' is respectively arranged in the concave tracks of a pair of first guide rail 802,802 ' and makes a pair of first guide rail to oil pumping 2 guide and limit of bar fall block.On the inside of the pallet of counterweight fall block 6(Inboard, i.e., on the left of the pallet of counterweight fall block)Before Afterwards respectively two the second composite track rollers of installation and formed front and back the second composite track roller of two couples 601 setting up and down in pairs, 601 ', the mounting means of each second composite track roller is welding, and specific mounting means is exactly the second composite track roller Spindle nose and one piece of round-meshed plate welding, then again with assembly and connection on the inside of the pallet of counterweight fall block.It is each pair of described Second composite track roller 601,601 ' and the pair of second guide rail 803,803 ' are corresponding one by one, and each pair of described second is compound Roller bearing 601,601 ' is respectively arranged in the concave tracks of a pair of second guide rail 803,803 ' and makes a pair of second guide rail pair 6 guide and limit of counterweight fall block.Above-mentioned two pair of first composite track roller between the upper and lower away from(Upper and lower centre-to-centre spacing)It about can be with It it is 1 meter, that is, the first composite track roller of a pair above(To the first composite track roller on i.e.)With following a pair of the One composite track roller(To the first composite track roller under i.e.)Centre-to-centre spacing about can be 1 meter.Above-mentioned a pair of first guide rail In two the first guide rails in being oppositely arranged(It is symmetrical arranged), two the second guide rails in a pair of second guide rail are in being oppositely arranged (It is symmetrical arranged).Two the first composite track rollers in each pair of first composite track roller are in be oppositely arranged(It is symmetrical arranged), Two the second composite track rollers in each pair of second composite track roller are in be oppositely arranged(It is symmetrical arranged).Sucker rod lifting is slided Vehicle 2 walks up and down along the first guide rail, and counterweight fall block 6 walks up and down along the second guide rail, uses sucker rod fall block, counterweight The purpose of fall block is so that it is reduced sideshake in order to stablize sucker rod movement locus, and work is more safe and reliable.It is described Holder 10 is mounted in rack 8, can be around the driving wheel 9 that holder 10 rotates by the holder limited support, and flexible connecting member 9 ' passes through One end of driving wheel 9 and flexible connecting member 9 ' is connected with the pallet of sucker rod fall block 2, the other end of flexible connecting member 9 ' It is connected with the pallet of counterweight fall block 6, the power intake of the power output end and driving wheel 9 of power drive unit 14 (Power input shaft)It is connected.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, above-mentioned driving wheel 9, flexible connecting member 9 ' quantity can be all two.It is above-mentioned Driving wheel 9 can be slot ring antenna, and flexible connecting member 9 ' is round-link chain.In this way, round-link chain(Driving chain)Installation two simultaneously, Mainly consider that security needs, the safety coefficient of single chain are not less than 6 times, double items are not less than 12 times.Each slot ring antenna It is provided with two driver slots(Two slot ring antennas are provided with four driver slots), primarily to being convenient for changing round-link chain.Above-mentioned holder 10 concrete structures being mounted in rack 8 can be the top of rack 8(Top)It is fixedly connected with tablet 13 easy to operation, The tablet is operating platform, and tablet 13 horizontally outward extends from the front side of rack 8, rear side, left side, with sucker rod fall block Corresponding section tablet 13 is with jagged, i.e., jagged in the top relative position tablet band of sucker rod fall block, flexible connection Part(Round-link chain)9 ' pass through from this notch.The holder 10 is fixed on the upper surface of tablet 13, holder 10 by front side longitudinal plate, after Side longitudinal plate is constituted, front side longitudinal plate, rear side longitudinal plate front and rear sides with the frame of rack 8 800 respectively(It can be with)Xiang Qi.It is dynamic Force driving device 14 can have speed regulating motor, that is, speed governing reversing motor(Speed governing orientation adjusting motor, speed governing deflecting motor)1401, row Star gear reduction unit 1402, the pedestal of speed regulating motor 1401, the pedestal of planetary reducer 1402 are all fixedly mounted on tablet (13)Upper surface.In this way, slot ring antenna is by speed governing(Deflecting)Motor and deceleration device driving, make slot ring antenna drive round-link chain (Item)Positive and negative both direction rotation, round-link chain drives sucker rod fall block 2 and counterweight fall block 6 to move one on the other, complete At pumping operation above and below sucker rod.Motor in power drive unit will use the large torque electricity with speed governing and deflecting function Machine, is convenient for the movement locus of programming Control sucker rod, for example the upstroke startup brief acceleration value of sucker rod can be made smaller, connects Stop motor operating when nearly top dead-centre in advance, converted using kinetic energy potential energy, it is made to exempt reversing impact.Above-mentioned power drive unit It can also be speed governing tuning large torque low speed direct driving motor, eliminate retarder, the power intake with driving wheel 9(Round-link chain The power intake of wheel)It is connected with shaft coupling.Certainly, above-mentioned power drive unit can also be other structures, such as power drive Dynamic device can also be outer rotor slow-speed of revolution speed governing orientation adjusting motor, installation can be selected dynamic according to the needs of user in practical application Force driving device.Power drive unit is not limited only to the above-mentioned several structures stated, and there are many different structural shapes for it.On A box-type machine room 11 can also be fixed by stating on tablet 13.The front side of rack 8 is also equipped with repair cat ladder and protective fence 15.It is above-mentioned The for being equipped with first group of buffer 3 for preventing sucker rod fall block from falling on pedestal 4 and preventing that counterweight fall block from falling Two groups of buffers 5, first group of buffer 3 are located at immediately below the pallet of sucker rod fall block 2, and second group of buffer 5, which is located at, matches Immediately below the pallet of weight fall block 6, first group of buffer 3 and second group of buffer 5 are all several(It can be 2 ~ 3) Buffering hydraulic cylinder.Each first composite track roller 201 or 201 ' all has main roller 201a, side wheel 201b(With And spindle nose etc.).Each second composite track roller 601 or 601 ' all has main roller, side wheel(And spindle nose etc.), Each first composite track roller is identical as each structure of second composite track roller itself.The first and second compound rolling The composite track roller that Changzhou an ancient unit of weight reaches the production of special bearing Co., Ltd may be used in wheel bearing(Commercial goods).
Embodiment 2:The present embodiment is close with embodiment 1, except that in the present embodiment, above-mentioned driving wheel 9 is rolling Subchain wheel, flexible connecting member 9 ' are roller chain.Specifically roller chain wheel is board-like roller chain wheel, and flexible connecting member is board-like Roller chain.
Embodiment 3:The present embodiment is close with embodiment 1, except that in the present embodiment, above-mentioned driving wheel 9 is band Wheel(Glue coating wheel), flexible connecting member 9 ' is drive belt(Belt), drive belt is interior to carry wire-core.
It is to further instruction of the present invention below(Referring to following discussion).
1, stroke of the present invention is long, stroke long enough, and theoretical according to oil pumping, stroke is longer, the elastic stretching loss of sucker rod Percentage is lower, and the efficiency of stroke is higher.So as long as cost of manufacture unobvious increase, main screw lift unobvious increase, Stroke is the bigger the better.The present invention often increases by one meter of stroke, and theoretically weight increases by 250 kilograms or so(Stroke increases by one meter, needs Increase by four meters of round-link chains, the loop chain rice of diameter 30 is 18kg again, needs to increase by four meters of C16 sliding rails, rice weight 32kg, He Jiyue 200kg, reinforcing rib about 50kg), about 6 ~ 10 tons or so of the main screw lift of 16 meters of strokes, what this weight will be light more than beam machine More, being ground and transport can bear completely, and the increase of manufacturing cost is also very limited.Meanwhile increasing other the one of stroke A important function is can effectively to increase the service life of each moving component, such as guide rail, such as driving chain(Sandwich skin Band), reduce commutation number of motor etc..
2, power drive unit of the present invention(Power source, dynamical system)Configuration:The driving of power drive unit of the present invention Power is mainly considered as intelligent drives power, is mainly manifested in the overall process of stroke, Discrete control, takes different Acceleration and speed, for example start section and started using the method for being stepped up acceleration, to avoid big rush of current and to taking out The stress of beam hanger is impacted, and the service life of motor and sucker rod is extended.In addition the dynamical system can fully meet up-down stroke Commutation need, the positive and negative rotation of motor, drive drive chain(Band)Wheel, chain(Sandwich belt)It drags one in sucker rod and counterweight one Pumping operation is completed in lower movement.Connection between motor and driving wheel can take many forms, such as mechanical reduction device, Low-speed high-torque motor directly drives driving wheel or outer rotor low-speed high-torque motor directly drives etc., specifically using form will according to Depending on the use condition at family.It is the important of guarantee type oil pumping function long-time steady operation to choose suitable power drive unit One of precondition.
3, the important component that another power of the invention transmits is chain(Or sandwich belt), the chain strip adoption of the machine It is that Straight pull force way not will produce moment of flexure not by lateral force.Chain(Sandwich belt)Service life compared with than by lateral force Service life of chain will greatly increase.When using chain, it will four chain drive gears of setting, while two chains are equipped, Other two sprocket wheel is to facilitate the replacement of chain and spare.If using sandwich belt, principle is also the same.As for It to be determined according to actual actual conditions using annular chains or board-like rod chain or sandwich belt.
4, present invention employs dedicated tracks and matched composite track roller(Composite rolling wheel guide bearing), with The corresponding coaster side of every track, is welded with 2 composite track rollers, and two tracks and four composite track rollers are constituted The kinematic pair that sucker rod fall block slides up and down, other two track and four additional composite track roller constitute counterweight lifting The kinematic pair that coaster slides up and down, so that it is guaranteed that two coasters can only be according to track(Sliding rail)Move towards move up and down, two cunnings Vehicle drags sucker rod and lifts counterweight respectively.The purpose of the design is to enable the steadily edge of the coaster with sucker rod and carrying counterweight Track up and down motion, can effectively ensure sucker rod traveling comfort, avoids sucker rod by lateral force and is sent out with the borehole wall Raw friction, leads to sucker rod premature failure and damages the borehole wall, extend the service life of sucker rod, and then extend complete machine Service life.It is in order to which sucker rod is in upper and lower operational process that counterweight, which is arranged,(During upper and lower stroke)The load of motor tends to one It causes, power of motor and torque is made to reach most rational state, avoid the occurrence of power of motor surplus or overload.
5, the present invention from safety considerations, mainly takes proactive security measures, such as transmission chain(Band)It can take and compare Big safety coefficient, such as theoretical value are 12 times.And said base(Or ground)On be equipped with and prevent sucker rod fall block The first group of buffer to fall and second group of buffer for preventing counterweight fall block from falling, first group of buffer and second Group buffer is all several buffering hydraulic cylinders, can prevent sucker rod from pounding the generation of well accident.
In conclusion the long stroke pumping unit of the present invention is simple in structure, stroke is big(Stroke is long), securely and reliably, failure rate Low, repair is few, and low energy consumption, energy saving, and main screw lift is small, and manufacturing cost is low, and service life is long.

Claims (10)

1. a kind of long stroke pumping unit has pedestal(4), the rack that is fixedly installed on pedestal(8), sucker rod(1), feature It is that the long stroke pumping unit also has and is fixedly installed in rack(8)First guide rail of a pair in left side(802、802′), it is solid Dingan County is loaded on rack(8)Second guide rail of a pair on right side(803、803′), two pair of first composite track roller(201、201′), two To the second composite track roller(601、601′), counterweight(7), sucker rod fall block(2), counterweight fall block(6), driving wheel (9), match with the driving wheel flexible connecting member for constituting a pair of of kinematic pair(9′), holder(10), power drive unit (14);
The sucker rod(1)Top and sucker rod fall block(2)Pallet be fixedly connected, counterweight(7)It is lifted set on counterweight Coaster(6)Pallet in, sucker rod fall block(2)Pallet on the inside of before and after two the first composite track rollers are respectively installed and shape At front and back pairs of the first composite track roller of two couples setting up and down(201、201′), each pair of first composite track roller (201、201′)With the pair of first guide rail(802、802′)It is corresponding one by one, each pair of first composite track roller (201、201′)It is respectively arranged in a pair of first guide rail(802、802′)Concave tracks in and make a pair of first guide rail to oil pumping Bar fall block(2)Guide and limit, counterweight fall block(6)Pallet on the inside of before and after two the second composite track rollers are respectively installed And form front and back pairs of the second composite track roller of two couples setting up and down(601、601′), each pair of second composite rolling wheel axis It holds(601、601′)With the pair of second guide rail(803、803′)It is corresponding one by one, each pair of second composite track roller (601、601′)It is respectively arranged in a pair of second guide rail(803、803′)Concave tracks in and make a pair of second guide rail to counterweight Fall block(6)Guide and limit;
The holder(10)Mounted on rack(8)On, it can be around holder(10)The driving wheel of rotation(9)By the holder limited support, Flexible connecting member(9′)By driving wheel(9)And flexible connecting member(9′)One end and sucker rod fall block(2)Pallet phase Connection, flexible connecting member(9′)The other end and counterweight fall block(6)Pallet be connected, power drive unit(14)It is dynamic Power output end and driving wheel(9)Power intake be connected.
2. long stroke pumping unit according to claim 1, it is characterised in that above-mentioned driving wheel(9), flexible connecting member(9′) Quantity be all two.
3. long stroke pumping unit according to claim 1 or 2, it is characterised in that above-mentioned driving wheel(9)It is soft for slot ring antenna Property connector(9′)For round-link chain.
4. long stroke pumping unit according to claim 1 or 2, it is characterised in that above-mentioned driving wheel(9)It is soft for slot ring antenna Property connector(9′)For round-link chain, each slot ring antenna is provided with two driver slots.
5. long stroke pumping unit according to claim 1 or 2, it is characterised in that above-mentioned driving wheel(9)It is soft for roller chain wheel Property connector(9′)For roller chain.
6. long stroke pumping unit according to claim 1 or 2, it is characterised in that above-mentioned driving wheel(9)It is for roller chain wheel Board-like roller chain wheel, flexible connecting member(9′)For board-like roller chain.
7. long stroke pumping unit according to claim 1 or 2, it is characterised in that above-mentioned driving wheel(9)For belt wheel, flexibility is even Fitting(9′)For drive belt, drive belt is interior to carry wire-core.
8. long stroke pumping unit according to claim 1, it is characterised in that above-mentioned holder(10)Mounted on rack(8)On Concrete structure is rack(8)Top be fixedly connected with tablet easy to operation(13), tablet(13)From rack(8)Front side, Rear side, left side horizontally outward extend, with sucker rod fall block corresponding section tablet(13)With jagged, flexible connecting member (9′)It is passed through from this notch, the holder(10)It is fixed on tablet(13)Upper surface, holder 10 indulged by front side longitudinal plate, rear side To plate constitute, front side longitudinal plate, rear side longitudinal plate respectively with rack(8)Frame(800)Front and rear sides it is mutually neat.
9. long stroke pumping unit according to claim 8, it is characterised in that above-mentioned power drive unit(14)With speed governing Motor, that is, speed governing reversing motor(1401), planetary reducer(1402), speed regulating motor(1401)Pedestal, planetary gear reduction Fast device(1402)Pedestal be all fixedly mounted on tablet(13)Upper surface.
10. long stroke pumping unit according to claim 1, it is characterised in that said base(4)On be equipped with and prevent from pumping First group of buffer that bar fall block falls(3)With second group of buffer for preventing counterweight fall block from falling(5), first group Buffer(3)Positioned at sucker rod fall block(2)Pallet immediately below, second group of buffer(5)Positioned at counterweight fall block(6) Pallet immediately below, first group of buffer(3)With second group of buffer(5)It is all several buffering hydraulic cylinders.
CN201810415768.3A 2018-05-03 2018-05-03 Long stroke pumping unit Pending CN108457624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810415768.3A CN108457624A (en) 2018-05-03 2018-05-03 Long stroke pumping unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810415768.3A CN108457624A (en) 2018-05-03 2018-05-03 Long stroke pumping unit

Publications (1)

Publication Number Publication Date
CN108457624A true CN108457624A (en) 2018-08-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810415768.3A Pending CN108457624A (en) 2018-05-03 2018-05-03 Long stroke pumping unit

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Country Link
CN (1) CN108457624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112483047A (en) * 2020-11-25 2021-03-12 瑞昌市森奥达科技有限公司 Vertical lift type oil pumping machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112483047A (en) * 2020-11-25 2021-03-12 瑞昌市森奥达科技有限公司 Vertical lift type oil pumping machine
CN112483047B (en) * 2020-11-25 2022-06-03 瑞昌市森奥达科技有限公司 Vertical lift type oil pumping machine

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