CN202690012U - Non-commutative chain oil pumping unit for oil extraction of oilfield - Google Patents

Abstract

The utility model provides a non-commutative chain oil pumping unit for oil extraction of an oilfield. The non-commutative chain oil pumping unit comprises a frame, a motor, a reducer, a belt pulley, a driving chain wheel, a non-lubricated chain, an upper driven pulley block, a lower driven pulley block, a stroke adjusting board, a counterweight and a lifting cable. According to the oil pumping unit, the non-lubricated chain is adopted and a polyethylene plastic bearing is arranged between sliding objects, so that lubrication is avoided during the use; due to the adoption of a shaft-driven double chain wheel of the reducer, the synchronous motion of the double chain wheel chains on the two sides of the oil pump unit is ensured and the double chain wheel chains on the two sides are stressed uniformly; and the counterweight is connected with a synchronizing shaft by a rope through a pulley, so that the counterweight is prevented from swinging when moving up and down, the influence of the counterweight on the synchronous shaft is only in the vertical direction, and the influence of the side bending moment generated by swinging of the counterweight on the synchronous shaft is isolated. Furthermore, the impact on the synchronous shaft caused by the change of the total rope length of a closed ring formed by a driving cable is prevented; the oil pumping unit runs stably on the whole and has good adaptability due to the adoption of standard parts or standard structural parts.

Description

A kind of oil extraction in oil field is used without reversing chain formula oil pumper

Technical field

The utility model relates to a kind of oil extraction in oil field and uses without reversing chain formula oil pumper.

Background technology

At present, it is conventional beam-pumping unit that the adopting of underground oil and gas drawn device widely used, although it is simple in structure, reliability and durability and be convenient to the advantage such as maintenance that it has, more and more be difficult to meet the requirement to oil pumper long stroke, large load of present deep-well, heavy oil wells.In this case, start to adopt chain type oil pump.Chain type oil pump has the advantages such as stroke is long, inertial load is little, and quality and floor space are little.Situation about using from current oil field, affect chain type oil pump and further promote the use of main cause and be: reliability is poor, the chain rapid wear, the failure-free operation cycle constantly shortens, have less than half a year; Add and will stop maintenance, workload is large, and expense is high, and applying unit is difficult to bear.Cause the reason that the chain type oil pump reliability is low, the one, because the chain motion is asynchronous, produce a sizable lateral bending moment on chain, a stressed large side is damaged in advance; The 2nd, the swing of balance weight on the normal plane of chain movement track produces a lateral bending moment, causes local chain link to destroy.(list of references: Chinese patent CN101307683, symmetrical balance chain type oil pump; Chinese patent CN2799902, chain drive pumping unit; Chinese patent CN101469606,, chain type oil pump; Chinese patent CN2199330, without the chain type oil pump of reversing gear bracket; Chen Yibao, high peace, Zhang Shaobo, stone face punt-pole, Zhang Huiwen, Tang Lijie., without principle and the application of reversing gear bracket chain drive pumping unit. petroleum machinery, 1996,24 (5), 42-44; Yang Chongen. the schematic design of long stroke Double chain synchronous drive oil pump. petroleum machinery, 2001,29 (8): 10-12.）

Summary of the invention

The problem existed in order to solve prior art, the utility model provides a kind of oil extraction in oil field to use without reversing chain formula oil pumper.

A kind of oil extraction in oil field that the utility model provides is used without reversing chain formula oil pumper, and it is constructed as follows:

(a)frame is arranged on frame seat;

(b)rack-mounted motor and speed reducer is in transmission connection by belt, belt pulley one and belt pulley two;

(c)by 2 shaft couplings, the two ends of the output shaft of double-output speed reducer are connected respectively, 2 movable sprockets one are arranged on respectively on 2 shaft coupling other end sprocket shafts, and 2 sprocket shafts are arranged on respectively in the bearing on the chain wheel support; Like this, 2 drive sprockets one equal coaxial with the output shaft of reductor, have identical rotating speed;

(d)one end of 2 chain wheel supports is connected on frame, and the other end of 2 chain wheel supports is connected with the sprocket shaft bearing respectively; One end of 2 sprocket shafts is respectively through bearing and 2 rear being placed in respectively in rack-mounted bearing of moving drive sprocket two in described bearing support; 2 drive sprockets one and 2 moving drive sprockets two are in transmission connection by 2 driving chains respectively; 2 promote power chain one and use respectively spline joint at the sprocket shaft other end; 2 drive sprockets two are coaxial with 2 lifting power chains one respectively;

2 ends that promote the power chain support are connected to the frame upper end, and the other end is connected with lifting power chain bearing support respectively; Sprocket shaft is respectively through the bearing in this bearing support, and 2 promote power chain two and with spline joint, after an end of sprocket shaft, use respectively the nut snap ring fastening;

2 promote power chain one and are in transmission connection by 2 lifting power chains and 2 lifting power chains two respectively;

Like this, the power of reductor output by 2 drive sprockets one, 2 drive sprockets two, 2 promote power chain one and synchronously passed to respectively 2 and promote power chains two;

(e)the top sheave pack support is connected to the frame upper end, and 2 groups of upper driving assembly pulleys one have respectively 2 pulleys; The two ends of 2 pulley spindles of every group of upper driving assembly pulley one are connected with top sheave pack support 7, and 2 pulleys of 2 groups of upper driving assembly pulleys one are connected with 2 pulley spindles by bearing respectively and can rotate around pulley spindle; 2 transmission hawsers two are walked around respectively 2 pulleys of upper driving assembly pulley one, synchronous transferring power;

(f)synchronizing shaft is a symmetrical multidiameter shaft, and its jackshaft section diameter is the thickest, and it is shaft part and the thinnest shaft part of diameter that diameter is thinner that the two ends of middle shaft part are complied with subsymmetric;

2 synchronizing shaft bearings are arranged on respectively in 2 transmission hawser hinge eyes, and the shaft part of synchronizing shaft is respectively through the synchronizing shaft bearing, and 2 synchronizing shaft snap rings are stuck in 2 synchronizing shaft bearings and transmission hawser hinge eyes on the shaft part that synchronizing shaft is adjacent with middle shaft part respectively;

2 shaft parts of the outermost end of synchronizing shaft are also respectively 2 bearing pins that promote the correspondence of power chain, so synchronizing shaft follows 2 lifting power chains to do synchronous shuttling movement up and down;

On 2 transmission hawser hinge eyes, upper connecting ring, lower connecting ring are arranged respectively;

(g)described lifting power chain is stainless chain;

(h)there is a U font Connection Block upper end of counterbalance, and there is respectively circular groove at the both ends of upper connecting axle, and after the central connection bearing of upper connecting axle, two ends are connected on U font Connection Block, promotes the hinged pulley of thing and is connected to the central authorities of upper connecting axle by bearing;

One end of 2 transmission hawsers two is connected on the upper connecting ring of 2 transmission hawser hinge eyes, after walking around 2 pulleys of 2 upper driving assembly pulleys one, its other end is enclosed within respectively in the circular groove of counterbalance and the upper connecting axle that promotes the hinged pulley of thing 33 both sides;

Also there is a U font lower connecting base lower end of counterbalance, there is respectively circular groove at the both ends of lower connecting axle, the two ends of lower connecting axle are connected on U font Connection Block, one end of 2 transmission hawsers one is connected on lower connecting ring, respectively by after the driven pulley that is connected to 2 underdrive assembly pulleys two on downslide wheels bearing, its other end is enclosed within respectively in the circular groove of lower connecting axle of lower end of counterbalance;

(I)downslide wheels bearing is to be assembled by lower sheave support and pulley junction plate; The pulley junction plate is comprised of a transverse slat and two vertical risers, and wherein, two vertical risers are placed in the transverse slat two ends and connect; The lower sheave support is that the vertical riser that is arcs by two upper surfaces of vertical connection, the two ends of the transverse slat of a horizontal positioned forms, and the vertical riser of two arcs respectively has a concentric through hole; The lower sheave support is connected with frame;

Two upper surfaces that two vertical risers of pulley junction plate are inserted in the lower sheave support are between the vertical riser of arc, the second underdrive pulley spindle lateral openingly is connected the pulley junction plate through first with the lower sheave support, the second underdrive pulley of underdrive assembly pulley two is arranged on the bearing of the second underdrive pulley spindle; The first underdrive pulley spindle lateral openingly is connected with the pulley junction plate through second, and the first underdrive pulley of underdrive assembly pulley two is arranged on the bearing of the first underdrive pulley spindle; The pulley junction plate can rotate around the second underdrive pulley spindle, drives the also upper and lower fine motion together of the first underdrive pulley;

The cross-arm of pulley junction plate is connected to two transverse slats above vertical riser two ends through hole, and the hawser preloading spring is placed on the transverse slat of pulley junction plate, and the pretension bar of attaching the names of pre-determined candidates is fixed on frame with pre-load nut after passing hawser preloading spring and through hole;

Transmission hawser one is walked around two of the left and right pulley of underdrive assembly pulley two, when the closed loop of transmission hawser one and transmission hawser two compositions is always restricted the short variation of long hair growth, can tear the also upper and lower fine motion together of the second underdrive pulley, due to stretching of hawser preloading spring, described closed loop is always restricted to grow and is kept relatively constant and keep certain pretightning force, like this, always restrict and grow the impact to synchronizing shaft that variation causes with the elimination closed loop;

(K)pulley bracket consists of 2 block-shaped identical hang plates, and the head pulley axle is connected to the pulley bracket top that the place ahead of frame is stretched in 2 inclinations, and 2 hang plate bottoms are fixed in the frame upper end, and head pulley is arranged on the head pulley axle by bearing;

Adjusting the stroke plate is 2 identical triangular plates substantially, adjusts the upper end of the triangular plate of stroke plate that the stroke of tune plate transposition pin-and-hole is arranged, and adjusts stroke plate transposition pin by this hole, 2 triangular plates to be connected with pulley bracket; Adjust the left upper end of the triangular plate of stroke plate that the lifting tackle hole is arranged, the lifting tackle axle is connected with 2 triangular plates by this hole, and lifting tackle one is contained on the lifting tackle axle by bearing;

Adjust stroke plate triangular plate that upper and lower 2 stroke plate transposition pin-and-holes are arranged respectively below the lifting tackle hole for 2, 1.adjust stroke plate lock pin with 2, to adjust pulley bracket stroke plate triangular plate to be connected through down stroke plate transposition pin-and-hole, adjust the stroke plate in this position, promoting hawser one end is connected with the hinged pulley of lifting thing with the counterbalance on the top of counterbalance, and have the equal overbalance thing of face center of gravity altogether with transmission hawser two and transmission hawser, when moving up and down, counterbalance can avoid producing swing, promote the hawser other end and be connected with pump rod through lifting tackle one, head pulley successively, pump rod and counterbalance are done inferior stroke movement, 2.perhaps, adjust stroke plate lock pin with 2, to adjust pulley bracket stroke plate triangular plate to be connected through upstroke plate transposition pin-and-hole, adjust the stroke plate in this position, promoting hawser one end is connected with the lifting hawser jointed shaft on being connected to pulley bracket, promote the hawser other end successively through counterbalance and the hinged pulley of lifting thing, lifting tackle one, head pulley is connected with pump rod, promote hawser through counterbalance and counterbalance and promote the center of gravity that the hinged pulley tailheaviness of thing and transmission hawser two and transmission hawser have the equal overbalance thing of face altogether, can avoid producing when counterbalance moves up and down and swing, the pump rod stroke that moves up and down equals 2 times of the strokes that counterbalance moves up and down.

In order to reinforce, can also be with adjusting stroke plate trip bolt through 2 blocks of tune stroke plates and pulley bracket, that both are fastening.

below introduce: (1) realizes the problem without commutation:synchronizing shaft and then promotes power chain while doing synchronous moving up and down, and drives counterbalances by 2 transmission hawsers one and transmission hawser two simultaneously and moves up and down; When counterbalance moves up and down, promote hawser by counterbalance and the hinged pulley of lifting thing, by lifting tackle one and head pulley, make pump rod do the strike the oil that pumps.At pump rod, do in the process of pumping, whole kinematic system is without commutation.

(2) when introduce solving counterbalance below and moving up and down in order to prevent vibration problems:when counterbalance moves up and down, 2 transmission hawsers one are symmetrical in the left and right, center of counterbalance respectively with 2 transmission hawsers two and are connected; One end of 2 transmission hawsers one is connected with hinge eyes under counterbalance respectively, under other end difference synchronizing shaft, hinge eyes connects, one end of 2 transmission hawsers two is connected with hinge eyes on counterbalance respectively, the other end is connected with hinge eyes on synchronizing shaft respectively, thereby formed from 2 transmission hawsers one to counterbalance, from counterbalance to 2 a transmission hawser two, from 2 transmission hawsers two to synchronizing shaft, from the sealing transmission ring of synchronizing shaft to 2 a transmission hawser one; When counterbalance moves upward, by two tractions of 2 transmission hawsers, 2 auxiliary counterbalance positions of controlling of transmission hawser one; When counterbalance moves downward, one traction of 2 transmission hawsers, 2 transmission hawsers two are auxiliary controls the counterbalance positions, thereby has guaranteed the moving up and down of barycentre steadiness of counterbalance;

(3) below, how introduction solves the asynchronous problem of bilateral chain:in oil pumper, reductor adopts the output shaft two ends to be connected with drive sprocket one by shaft coupling respectively, because the nearly rigidity output of same axle can guarantee double chain wheel constant speed rotation simultaneously, then guaranteeing that the bilateral chain is done is synchronized with the movement, eliminated chain one side discontinuity, made the chain uniform stressed.

(4) introduce below and solve the lateral bending moment problem:pumping of synchronizing shaft, be converted into corresponding lower of counterbalance in reciprocating process, one end of 2 transmission hawsers two is connected with synchronizing shaft respectively, the other end of 2 transmission hawsers two is connected with counterbalance respectively after upper driving pulley one, but the reaction that moves up and down of counterbalance is to synchronizing shaft, upper driving pulley one has played the mobile decoupling effect, has eliminated the lateral bending square of the synchronizing shaft that the swing of counterbalance causes.

(5) introduce closed loop that transmission hawser one and transmission hawser two the form long hair impact solution of short variation to synchronizing shaft of growing of always restricting below:

a.the generation of problem: the utility model provides a kind of oil extraction in oil field to use without reversing chain formula oil pumper when moving, hawser was centre of sprocket, synchronizing shaft and then promotes power chain while doing synchronous shuttling movement up and down, and the closed loop recited above appearance of always restricting is vicissitudinous to length .B.the technical scheme of dealing with problems (I) described above.

the oil pumper course of work:belt pulley on driven by motor belt pulley, belt and reductor; The speed reducer output shaft both-end is by shaft coupling transmission left and right sides drive sprocket one, drive sprocket one drives drive sprocket two by driving chain, drive sprocket two is coaxial with lifting power chain one, promotes power chain one power is passed to and promoted power chain and promote power chain two; Go out because speed reducer output shaft is an axle both-end, so promote power chain one, promote power chain two and promote power chain, do synchronous shuttling movement up and down; Synchronizing shaft reality is also 2 bearing pins that promote the correspondence of power chain, so synchronizing shaft follows 2 lifting power chains to do synchronous shuttling movement up and down; On synchronizing shaft, there are two pairs of transmission hawser hinge eyes to arrive counterbalance to transmission hawser two through driven pulley group one; Lower connecting axle through counterbalance arrives transmission hawser one, again after two pulleys of underdrive assembly pulley two to two pairs of transmission hawser hinge eyes on synchronizing shaft, synchronizing shaft and then promotes power chain while doing synchronous shuttling movement up and down, drives counterbalances by transmission hawser one and transmission hawser two simultaneously and moves up and down; When moving up and down, counterbalance by lifting tackle one and head pulley, to pump rod, moves up and down and strike the oil through promoting hawser by counterbalance and the hinged pulley of lifting thing.

beneficial effect:a kind of oil extraction in oil field that the utility model provides is used without reversing chain formula oil pumper, is the high and low fault of a kind of reliability, energy-conservation, stroke changeable, long-life and the little Novel chain type oil pumping machine of floor space.(1) axle of the reducer of described oil pumper drives double chain wheel, has guaranteed being synchronized with the movement of oil pumper both sides double chain wheel chains, makes both sides double chain wheel chain uniform stressed; (2) adopt counterbalance 12 to be connected across pulley by rope with synchronizing shaft 29, counterbalance 12 has prevented the problem swung while moving up and down, make counterbalance 12 on the impact of synchronizing shaft only in vertical direction, isolated the impact on synchronizing shaft 29 of lateral bending square that the swing of counterbalance 12 produces; (3) also solved closed loop that transmission hawser 1 and transmission hawser 2 14 the form long hair of always restricting and grown short variation to the impact of synchronizing shaft 29, the oil pumper overall operation is steady; (4) pump rod and counterbalance both can be done inferior stroke movement, the pump rod stroke that moves up and down also can equal 2 times of the strokes that counterbalance moves up and down, a kind of oil extraction in oil field that the utility model is provided uses the oil reservoir that is applicable to different depth without reversing chain formula oil pumping function to carry out rape oil, realize a tractor serves several purposes, greatly provide cost savings.(5) adopt standard component or standard knots member, there is good compatibility. the accompanying drawing explanation

Fig. 1 is that a kind of oil extraction in oil field of the present utility model is with exempting from lubricating chain formula oil pumper front view.Fig. 2 is that a kind of oil extraction in oil field of the present utility model is with exempting from lubricating chain formula oil pumper lateral view.Figure A is the A partial enlarged view in Fig. 1.Figure B is the B partial enlarged view in Fig. 2.Figure C is the C partial enlarged view in Fig. 1.Figure D is the D partial enlarged view in Fig. 2.The structural representation enlarged drawing that figure D-1 is synchronizing shaft 29 multidiameter shafts.Figure E is the E partial enlarged view in Fig. 1.Figure F is the F partial enlarged view in Fig. 2.Figure G is the G partial enlarged view in Fig. 1.Figure H is the H partial enlarged view in Fig. 2.The I partial enlarged view that figure I is Fig. 1.The lower end U font lower connecting base partial enlarged view that figure I-1 is counterbalance 12.The J partial view that figure J is Fig. 1.Figure J-1 is the another kind of view of the structure of figure J expression.The K partial view that figure K is Fig. 2.Fig. 3-1 underdrive assembly pulley 2 100 structural representation front views.Fig. 3-2 underdrive assembly pulley 2 100 structural representation lateral views.Fig. 3-3 are the structural representation of downslide wheels bearing.Fig. 3-4 are pulley junction plate 42 structural representations of downslide wheels bearing.Fig. 3-5th, the front view of the structural representation of lower sheave support 41.Fig. 3-6th, the lateral view of the structural representation of lower sheave support 41.Fig. 4 promotes hawser 18 and is connected to lifting hawser jointed shaft 47 connection diagrams on pulley bracket 17.Fig. 5 is the structural representation that promotes power chain 13. the specific embodiment

embodiment 1as shown in Figure 1, 2, a kind of oil extraction in oil field that the present embodiment provides is used without reversing chain formula oil pumper, and it is constructed as follows:

(a)frame is arranged on frame seat 1;

(b)rack-mounted motor 2 and reductor 6 are in transmission connection by belt 4, belt pulley 1 and belt pulley 25;

(c)by 2 shaft couplings 37, the two ends of the output shaft of double-output speed reducer 6 are connected respectively, 2 drive sprockets 1 are arranged on respectively on 2 shaft couplings, 37 other end sprocket shafts, and 2 sprocket shafts are arranged on respectively in the bearing on chain wheel support 38; Like this, 2 drive sprockets 1 equal coaxial with the output shaft of reductor 6, have identical rotating speed;

(d)as scheme as shown in B, an end of 2 chain wheel supports 36 is connected on frame, and the other end of 2 chain wheel supports 36 is connected with the sprocket shaft bearing respectively; One end of sprocket shaft is through bearing and 2 rear being placed at respectively in rack-mounted bearing of moving drive sprocket 29 in this bearing support; 2 drive sprockets 1 and 2 moving drive sprockets 29 are in transmission connection by 2 driving chains 8 respectively; 2 promote power chain 1 and use respectively spline joint at the sprocket shaft other end; 2 drive sprockets 29 are coaxial with 2 lifting power chains 1 respectively;

As shown in Figure 2,2 ends that promote power chain support 28 are connected to the frame upper end, and the other end is connected with lifting power chain bearing support respectively; Sprocket shaft is respectively through the bearing in this bearing support, and 2 promote power chain 2 15 and with spline joint, after an end of sprocket shaft, use respectively the nut snap ring fastening;

As shown in Figure 2,2 lifting power chains 1 are in transmission connection by 2 lifting power chains 13 and 2 lifting power chains 2 15 respectively;

Like this, the power of reductor 6 outputs promotes power chain 1 by 29,2 of one 7,2 drive sprockets of 2 drive sprockets and has synchronously passed to respectively 2 lifting power chains 2 15;

(e)as scheme as shown in E, F, top sheave pack support 27 is connected to the frame upper end, and 2 groups of upper driving assembly pulleys 1 have respectively 2 pulleys; The two ends of 2 pulley spindles 26 of every group of upper driving assembly pulley 1 are connected with top sheave pack support 27, and 2 pulleys of 2 groups of upper driving assembly pulleys 1 are connected with 2 pulley spindles 26 by bearing respectively and can rotate around pulley spindle 26; 2 transmission hawsers 2 14 are walked around respectively 2 pulleys of upper driving assembly pulley 1, synchronous transferring power;

(f)as scheme as shown in D-1, synchronizing shaft 29 is symmetrical multidiameter shafts, and its jackshaft section 29-3 diameter is the thickest, and it is shaft part 29-2 and the thinnest shaft part 29-1 of diameter that diameter is thinner that the two ends of middle shaft part 29-3 are complied with subsymmetric;

As scheme as shown in C, D, 2 synchronizing shaft bearings 31 are arranged on respectively in 2 transmission hawser hinge eyes 30, the shaft part 29-2 of synchronizing shaft 29 is stuck in 2 synchronizing shaft bearings 31 and transmission hawser hinge eyes 30 on the shaft part 29-2 of synchronizing shaft 29 respectively through 31,2 synchronizing shaft snap rings 32 of synchronizing shaft bearing respectively;

2 shaft parts of the outermost end of synchronizing shaft are also respectively 2 bearing pins that promote the correspondence of power chain, so synchronizing shaft follows 2 lifting power chains to do synchronous shuttling movement up and down;

On 2 transmission hawser hinge eyes 30, upper connecting ring 59, lower connecting ring 60 are arranged respectively;

(g)described lifting power chain is stainless chain;

(h)as scheme as shown in G, H, there is a U font Connection Block upper end of counterbalance 12, there is respectively circular groove at the both ends of upper connecting axle, after the central connection bearing of upper connecting axle, two ends are connected on U font Connection Block, and counterbalance is connected to the central authorities of upper connecting axle with the hinged pulley 33 of lifting thing by bearing;

One end of 2 transmission hawsers 2 14 is connected on the upper connecting ring 59 of 2 transmission hawser hinge eyes 30, after walking around 2 pulleys of 2 upper driving assembly pulleys 1, its other end is enclosed within respectively in the circular groove of counterbalance and the upper connecting axle that promotes the hinged pulley of thing 33 both sides;

As scheme as shown in I, figure I-1, also there is a U font lower connecting base lower end of counterbalance 12, there is respectively circular groove at the both ends of lower connecting axle, the two ends of lower connecting axle 10 are connected on U font Connection Block, one end of 2 transmission hawsers 1 is connected on lower connecting ring 60, respectively by after the driven pulley 43 that is connected to 2 underdrive assembly pulleys 2 100 on downslide wheels bearing, its other end is enclosed within respectively in the circular groove of lower connecting axle 10 of lower end of counterbalance 12;

(I)as shown in Fig. 3-3, downslide wheels bearing is to be assembled by lower sheave support 41 and pulley junction plate 42;

As shown in Figure 3-4, pulley junction plate 42 forms above being connected to two vertical riser two ends by a transverse slat cross-arm;

As shown in Fig. 3-5,3-6, lower sheave support 41 is that the vertical riser that is arcs by two upper surfaces of vertical connection, the two ends of the transverse slat of a horizontal positioned forms, and the vertical riser of two arcs respectively has a concentric through hole; Lower sheave support 41 is connected with frame;

Two upper surfaces that 42 two vertical risers of pulley junction plate are inserted in lower sheave support 41 are between the vertical riser of arc, as shown in Fig. 3-1, the second underdrive pulley spindle 58 is connected pulley junction plate 42 through the first lateral opening 42-1 with lower sheave support 41, the second underdrive pulley 43-2 of underdrive assembly pulley 2 100 is arranged on the bearing of the second underdrive pulley spindle 58; The first underdrive pulley spindle 57 is connected with pulley junction plate 42 through the second lateral opening 42-2, and the first underdrive pulley 43-1 of underdrive assembly pulley 2 100 is arranged on the bearing of the first underdrive pulley spindle 57; Pulley junction plate 42 can rotate around the second underdrive pulley spindle 58, drives also upper and lower fine motion together of the first underdrive pulley 43-1;

As shown in Fig. 3-1,3-2, the cross-arm of pulley junction plate 42 is connected to two transverse slats above vertical riser two ends through hole 42-3, hawser preloading spring 44 is placed on the transverse slat of pulley junction plate 42, after the pretension bar 40 of attaching the names of pre-determined candidates passes hawser preloading spring 44 and through hole 42-3, with pre-load nut 39, be fixed on frame;

Transmission hawser 1 is walked around two of the left and right pulley (43-1,43-2) of underdrive assembly pulley 2 100, when the closed loop of transmission hawser 1 and transmission hawser 2 14 compositions is always restricted the short variation of long hair growth, can tear also upper and lower fine motion together of the second underdrive pulley 43-2, due to stretching of hawser preloading spring, described closed loop is always restricted to grow and is kept relatively constant and keep certain pretightning force, like this, always restrict and grow the impact to synchronizing shaft 29 that variation causes with the elimination closed loop;

(K)as shown in Fig. 1, J, J-1, K, pulley bracket 17 consists of 2 block-shaped identical hang plates, head pulley axle 24 is connected to pulley bracket 17 tops that the place ahead of frame is stretched in 2 inclinations, and 2 hang plate bottoms are fixed in the frame upper end, and head pulley 25 is arranged on head pulley axle 24 by bearing;

Adjusting stroke plate 20 is 2 identical triangular plates substantially, adjusts the upper end of stroke plate 20 triangular plates that the stroke of tune plate transposition pin-and-hole is arranged, and adjusts stroke plate transposition pin 23 by this hole, 2 triangular plates to be connected with pulley bracket 17; Adjust the left upper end of stroke plate 20 triangular plates that the lifting tackle hole is arranged, the lifting tackle axle is connected with 2 triangular plates by this hole, and lifting tackle 1 is contained on the lifting tackle axle by bearing;

Adjust stroke plate 20 triangular plates that upper and lower 2 stroke plate transposition pin-and-holes are arranged respectively below the lifting tackle hole for 2; Adjust stroke plate lock pin 21 with 2, to adjust pulley bracket 17 stroke plate 20 triangular plates to be connected through down stroke plate transposition pin-and-hole 21-2, adjust stroke plate 20 in this position, promoting hawser 18 1 ends is connected with the hinged pulley 33 of lifting thing with the counterbalance on the top of counterbalance 12, and with transmission hawser 2 14 and coplanar equal overbalance thing 12 centers of gravity of transmission hawser 1, when counterbalance 12 moves up and down, can avoid produce swinging; Promote hawser 18 other ends and be connected with pump rod 34 through lifting tackle 1, head pulley 25 successively, pump rod 34 is done inferior stroke movement with counterbalance 12; In order to reinforce, can also be with adjusting stroke plate trip bolt 22 through 2 blocks of tune stroke plates 20 and pulley bracket 17, that both are fastening;

below introduce: (1) realizes the problem without commutation:synchronizing shaft 29 and then promotes power chain 13 while doing synchronous moving up and down, and drives counterbalances 12 by 2 transmission hawsers 1 and transmission hawser 2 14 simultaneously and moves up and down; When counterbalance 12 moves up and down, promote hawser 18 by counterbalance and the hinged pulley 33 of lifting thing, by lifting tackle 1 and head pulley 25, make pump rod 34 do the strike the oil that pumps.In pump rod 34 is done the process of pumping, whole kinematic system is.

(2) when introduce solving counterbalance 12 below and moving up and down in order to prevent vibration problems:one end of 2 transmission hawsers 1 is connected with the lower hinge eyes of counterbalance 12 respectively, under other end difference synchronizing shaft, hinge eyes connects, one end of 2 transmission hawsers 2 14 is connected with hinge eyes on counterbalance respectively, the other end is connected with hinge eyes on synchronizing shaft respectively, thereby formed from 2 transmission hawsers 1 to counterbalance 12, from 12 to 2 transmission hawsers 2 14 of counterbalance, from 2 transmission hawsers 2 14 to synchronizing shaft 29, from the sealing transmission ring of synchronizing shaft to 2 a transmission hawser 1; When counterbalance 12 moves upward, by 2 14 tractions of 2 transmission hawsers, 2 auxiliary counterbalance 12 positions of controlling of transmission hawser 1; When counterbalance 12 moves downward, one 11 tractions of 2 transmission hawsers, 2 transmission hawsers 2 14 are auxiliary controls counterbalance 12 positions, thereby has guaranteed the moving up and down of barycentre steadiness of counterbalance 12;

(3) below, how introduction solves the asynchronous problem of bilateral chain:in oil pumper, reductor 6 adopts the output shaft two ends to be connected with drive sprocket 1 by shaft coupling 37 respectively, because the nearly rigidity output of same axle can guarantee double chain wheel 7 constant speed rotation simultaneously, then guaranteeing that the bilateral chain is done is synchronized with the movement, eliminated chain one side discontinuity, made the chain uniform stressed.

(4) introduce below and solve the lateral bending moment problem:pumping of synchronizing shaft 29, be converted into counterbalance 12 correspondences lower in reciprocating process, one end of 2 transmission hawsers 2 14 is connected with synchronizing shaft 29 respectively, the other end of 2 transmission hawsers 2 14 is connected with counterbalance 12 respectively after upper driving pulley 1, but the reaction that moves up and down of counterbalance 12 is to synchronizing shaft 29, upper driving pulley 1 has played the mobile decoupling effect, has eliminated the lateral bending square of the synchronizing shaft 29 that the swing of counterbalance 12 causes.

(5) introduce closed loop that transmission hawser 1 and transmission hawser 2 14 the form long hair impact solution of short variation to synchronizing shaft 29 of growing of always restricting below:

The generation of problem: the utility model provides a kind of oil extraction in oil field to use without reversing chain formula oil pumper when moving, hawser was centre of sprocket, synchronizing shaft 29 and then promotes power chain 13 while doing synchronous shuttling movement up and down, the closed loop recited above appearance of always restricting is vicissitudinous to length, thereby can twine living disturbance .the the second underdrive pulley 43-2 installed on pulley junction plate 42 can be in lower sheave support 41 the axle fine motion 30 to transmission hawser 2 14, arrive again counterbalance 12 composition closed-loop change in length to eliminate counterbalance 12 to transmission hawser 1 to transmission hawser hinge eyes.The technical scheme of dealing with problems is shown in above-mentioned (I).

the oil pumper course of work:the belt pulley 5 that motor 2 drives on belt pulley 3, belt 4 and reductor 6; Reductor 6 output shaft both-ends are by shaft coupling 37 transmission left and right sides drive sprockets 1, drive sprocket 1 drives drive sprocket 29 by driving chain 8, drive sprocket 29 is coaxial with lifting power chain 1, promotes power chain 1 power is passed to and promoted power chain 13 and promote power chain 2 15; Go out because speed reducer output shaft 6 is axle both-ends, so promote power chain 1, promote power chain 2 15 and promote power chain 13, do synchronous shuttling movement up and down; Synchronizing shaft 29 reality are also 2 bearing pins that promote the correspondence of power chain 13, so synchronizing shaft 29 follows 2 lifting power chains 13 to do synchronous shuttling movement up and down; On synchronizing shaft 29, there are two pairs of transmission hawser hinge eyes 30 to arrive counterbalance 12 to transmission hawser 2 14 through driven pulley group 1; Lower connecting axle 10 through counterbalance arrives transmission hawser 1, again after two pulleys 43 of underdrive assembly pulley 2 100 to two pairs of transmission hawser hinge eyes 30 on synchronizing shaft 29, synchronizing shaft 29 and then promotes power chain 13 while doing synchronous shuttling movement up and down, drives counterbalances 12 by transmission hawser 1 and transmission hawser 2 14 simultaneously and moves up and down; When moving up and down, counterbalance 12 by lifting tackle 1 and head pulley 25, to pump rod 34, moves up and down and strike the oil through promoting hawser 18 by counterbalance and the hinged pulley 33 of lifting thing.

embodiment 2a kind of oil extraction in oil field that the present embodiment provides is used without reversing chain formula oil pumper, it is constructed as follows: as shown in Figure 4, adjust stroke plate lock pin 21 with 2, to adjust pulley bracket 17 stroke plate 20 triangular plates to be connected through upstroke plate transposition pin-and-hole 21-1, adjust stroke plate 20 in this position, promoting hawser 18 1 ends is connected with the lifting hawser jointed shaft 47 on being connected to pulley bracket 17, promote hawser 18 other ends successively through counterbalance and the hinged pulley 33 of lifting thing, lifting tackle 1, head pulley 25 is connected with pump rod 34, promote hawser 18 through counterbalance 12 and counterbalance and the center of gravity that promotes hinged pulley 33 tailheaviness of thing and transmission hawser 2 14 and the coplanar equal overbalance thing 12 of transmission hawser 1, can avoid producing when counterbalance 12 moves up and down and swing, pump rod 34 stroke that moves up and down equals 2 times of the strokes that counterbalance 12 moves up and down, remaining is with embodiment 1.

Claims (2)

1. an oil extraction in oil field is used without reversing chain formula oil pumper, it is characterized in that, it is constructed as follows:

(a)frame is arranged on frame seat (1);

(b)rack-mounted motor (2) and reductor (6) are in transmission connection;

(c)by 2 shaft couplings (37), the two ends of the output shaft of double-output speed reducer (6) are connected respectively, 2 drive sprockets one (7) are arranged on respectively on 2 shaft couplings (37) other end sprocket shaft, and 2 sprocket shafts are arranged on respectively in the bearing on chain wheel support (38);

(d)one end of 2 chain wheel supports (36) is connected on frame, and the other end is connected with the sprocket shaft bearing respectively; One end of 2 sprocket shafts is respectively through being placed in respectively in rack-mounted bearing after the bearing in described bearing support and 2 moving drive sprockets two (9); One (7) and 2 moving drive sprocket two (9) of 2 drive sprockets is in transmission connection by 2 driving chains (8) respectively; 2 promote power chain one (35) and use respectively spline joint at the sprocket shaft other end; 2 ends that promote power chain support (28) are connected to the frame upper end, and the other end is connected with lifting power chain bearing support respectively; Sprocket shaft is respectively through the bearing in this bearing support, and 2 promote power chain two (15) and with spline joint, after an end of sprocket shaft, use respectively the nut snap ring fastening; 2 promote power chain one (35) and are in transmission connection by 2 lifting power chains (13) and 2 lifting power chains two (15) respectively;

(e)top sheave pack support (27) is connected to the frame upper end, and 2 groups of upper driving assembly pulleys one (16) have respectively 2 pulleys; The two ends of 2 pulley spindles (26) of every group of upper driving assembly pulley one (16) are connected with top sheave pack support (27), and 2 pulleys of 2 groups of upper driving assembly pulleys one (16) are connected with 2 pulley spindles (26) by bearing respectively and can rotate around pulley spindle (26); 2 transmission hawsers two (14) are walked around respectively 2 synchronous transferring power of pulley of upper driving assembly pulley one (16);

(f)synchronizing shaft (29) is a symmetrical multidiameter shaft, and its jackshaft section (29-3) diameter is the thickest, and it is the shaft part that diameter is thinner (29-2) and the thinnest shaft part (29-1) of diameter that the two ends of middle shaft part (29-3) are complied with subsymmetric; 2 synchronizing shaft bearings (31) are arranged on respectively in 2 transmission hawser hinge eyes (30), the shaft part (29-2) of synchronizing shaft (29) is respectively through synchronizing shaft bearing (31), and 2 synchronizing shaft snap rings (32) are stuck in 2 synchronizing shaft bearings (31) and transmission hawser hinge eyes (30) on the shaft part (29-2) of synchronizing shaft (29) respectively; 2 shaft parts (29-1) of synchronizing shaft (29) are also respectively 2 bearing pins that promote the correspondence of power chain (13); Upper connecting ring (59), lower connecting ring (60) are arranged respectively on 2 transmission hawser hinge eyes (30);

(g)described lifting power chain is stainless chain;

(h)there is a U font Connection Block upper end of counterbalance (12), there is respectively circular groove at the both ends of upper connecting axle, after the central connection bearing of upper connecting axle, two ends are connected on U font Connection Block, promote thing handing-over pulley (33) and are connected to the central authorities of upper connecting axle by bearing; One end of 2 transmission hawsers two (14) is connected on the upper connecting ring (59) of 2 transmission hawser hinge eyes (30), after walking around 2 pulleys of 2 upper driving assembly pulleys one (16), its other end is enclosed within respectively in the circular groove of counterbalance and the upper connecting axle that promotes the hinged pulley wheel of thing (33) both sides; Also there is a U font lower connecting base lower end of counterbalance (12), there is respectively circular groove at the both ends of lower connecting axle, the two ends of lower connecting axle (10) are connected on U font Connection Block, one end of 2 transmission hawsers one (11) is connected on lower connecting ring (60), respectively by after the driven pulley (43) that is connected to 2 the underdrive assembly pulleys two (100) on downslide wheels bearing, its other end is enclosed within respectively in the circular groove of lower connecting axle (10) of lower end of counterbalance (12);

(I)downslide wheels bearing is to be assembled by lower sheave support (41) and pulley junction plate (42);

Pulley junction plate (42) is comprised of a transverse slat and two vertical risers, and wherein, two vertical risers are placed in the transverse slat two ends and connect; Lower sheave support (41) is that the vertical riser that is arcs by two upper surfaces of vertical connection, the two ends of the transverse slat of a horizontal positioned forms, and the vertical riser of two arcs respectively has a concentric through hole; Lower sheave support (41) is connected with frame;

Two upper surfaces that (42) two vertical risers of pulley junction plate are inserted in lower sheave support (41) are between the vertical riser of arc, the second underdrive pulley spindle (58) is connected pulley junction plate (42) through first lateral opening (42-1) with lower sheave support (41), the second underdrive pulley (43-2) of underdrive assembly pulley two (100) is arranged on the bearing of the second underdrive pulley spindle (58); The first underdrive pulley spindle (57) is connected with pulley junction plate (42) through second lateral opening (42-2), and the first underdrive pulley (43-1) of underdrive assembly pulley two (100) is arranged on the bearing of the first underdrive pulley spindle (57); Pulley junction plate (42) can rotate around the second underdrive pulley spindle (58), drives the also upper and lower fine motion together of the first underdrive pulley (43-1); The cross-arm of pulley junction plate (42) is connected to two transverse slats above vertical riser two ends through hole (42-3), hawser preloading spring (44) is placed on the transverse slat of pulley junction plate (42), the pretension bar (40) of attaching the names of pre-determined candidates is fixed on frame with pre-load nut (39) after passing hawser preloading spring (44) and through hole (42-3);

Transmission hawser one (11) is walked around two of the left and right pulley (43-1,43-2) of underdrive assembly pulley two (100), when the closed loop formed when transmission hawser one (11) and transmission hawser two (14) is always restricted short variations of long hair growth, can tear lower-left driven pulley (43-1) and play a upper and lower fine motion and make the closed loop long maintenance of always restricting relatively constant;

(K)pulley bracket (17) consists of 2 block-shaped identical hang plates, head pulley axle (24) is connected to pulley bracket (17) top that the place ahead of frame is stretched in 2 inclinations, 2 hang plate bottoms are fixed in the frame upper end, and head pulley (25) is arranged on head pulley axle (24) by bearing; Adjusting stroke plate (20) is 2 identical triangular plates substantially, adjusts the upper end of stroke plate (20) triangular plate that the stroke of tune plate transposition pin-and-hole is arranged, and adjusts stroke plate transposition pin (23) by this hole, 2 triangular plates to be connected with pulley bracket (17); Adjust the left upper end of stroke plate (20) triangular plate that the lifting tackle hole is arranged, the lifting tackle axle is connected with 2 triangular plates by this hole, and lifting tackle one (19) is contained on the lifting tackle axle by bearing; Adjust stroke plate (20) triangular plate that upper and lower 2 stroke plate transposition pin-and-holes are arranged respectively below the lifting tackle hole for 2; Adjust stroke plate lock pin (21) with 2, to adjust pulley bracket (17) stroke plate (20) triangular plate to be connected through down stroke plate transposition pin-and-hole, rise hawser (18) one ends and be connected with the lifting hinged pulley of thing (33) with the counterbalance on the top of counterbalance (12), and with transmission hawser two (14) and the coplanar equal overbalance thing of transmission hawser one (11) (12) center of gravity; Lifting hawser (18) other end passes through lifting tackle one (19) successively, head pulley (25) is connected with pump rod (34), and pump rod (34) is done inferior stroke movement with counterbalance (12).

2. the described a kind of oil extraction in oil field of claim is used without reversing chain formula oil pumper, it is characterized in that, described tune stroke plate lock pin (21) adjusts pulley bracket (17) stroke plate (20) triangular plate to be connected with 2 through upstroke plate transposition pin-and-hole, promoting hawser (18) one ends is connected with the lifting hawser jointed shaft (47) on being connected to pulley bracket (17), promote hawser (18) other end successively through counterbalance and the lifting hinged pulley of thing (33), lifting tackle one (19), head pulley (25) is connected with pump rod (34), promote hawser (18) through counterbalance (12) and counterbalance and the center of gravity that promotes thing hinged pulley (33) tailheaviness and transmission hawser two (14) and the coplanar equal overbalance thing of transmission hawser one (11) (12), can avoid while moving up and down producing at counterbalance (12) and swing, pump rod (34) stroke that moves up and down equals 2 times of the strokes that counterbalance (12) moves up and down.

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