CN1818327A - Reciprocating petroleum beam-pumping unit with hydraulic transmission - Google Patents

Abstract

A hydraulic transmission petroleum mining pumping unit, it compose of foundation, front bracket, rear bracket, up pull-rod and diagonal pull-rod that are connected by hinge, hydraulic transmission assembly is set between front and rear bracket which compose of slide-block type variable and reversing gear hydraulic pump of combinational flat valve, slide-block type plate transmission low-speed torque hydraulic motor, oil-box and accessories group of pipe line, that is the transmission system operates opening pump motor to volume velocity modulation and reversing loop, and combine by hydraulic transmission wheel connecting with transmission pieces of mining pump, control by machined, electric and hydraulic adjustable system to work continuously and reciprocally with the needful stroke and stroke time.

Description

Reciprocating petroleum beam-pumping unit with hydraulic transmission

One, technical field:

The present invention relates to a kind of reciprocating petroleum beam-pumping unit, particularly relate to a kind of hydraulic drive reciprocating beam-pumping unit.

Two, background technology:

With the immediate background technology of the present invention be, application number in me is 2004100715265, publication number is CN1587751A, and name is called the constructing technology that a kind of reciprocating petroleum beam-pumping unit with hydraulic transmission is provided in the technical scheme in the application for a patent for invention of " rotary positive displacement hydraulic device and hydraulic driving type petroleum production oil pump ".This oil pumper is a kind of top that is assemblied in the Vertical Rack of tilt adjustable by highly integrated hydraulic transmission part, flexible load-bearing driving component matches with the drive mechanism of the drive wheel face of this hydraulic transmission part, one end hangs balance weight body, the other end is connected with the oil well oil-pumping pump connecting link, adjusts and control oil-well pump of oil well by the stroke of setting and the petroleum beam-pumping unit of the continuous working in reciprocating mode of jig frequency by driving stroke and jig frequency regulator control system.

This machine is compared with the corresponding product that has now in usefulness, though all may produce remarkable advantages at the mixed economy effect aspect aspect manufacturing and the use, but still there is deficiency aspect index that Hydraulic Elements that its hydraulic transmission part is selected and the hydraulic system that is adopted can reach and the essential low fault of this kind oil pumper product, the long-life service behaviour requirement on service behaviours such as functional reliability and working life, simultaneously, the agent structure of complete machine also has further improved necessity.

Three, summary of the invention:

Technical problem to be solved by this invention is, on the basis of background technology, improve the synthetic operation performance of oil pumper hydraulic transmission part of the present invention by the technical measures of selecting Hydraulic Elements for use, making up more appropriate hydraulic system with better service behaviour, promote its comprehensive practicality and reliability by the mode of improving the complete machine structure design, construct the novel hydraulic transmission petroleum beam-pumping unit that technology is more advanced, mixed economy value is higher with this.

The solution of above-mentioned technical problem, realized by following scheme:

Prerequisite is, based on background technology, that is: by comprising hydraulic pump, motor, control valve, the pipeline auxiliary holds together at interior Hydraulic Elements and associated mechanical part assembled group, constitute the hydraulic transmission part of this machine, these parts with by base, the rack section that support and connecting elements assembly thereof constitute constitutes the agent structure of this machine together, belt that the wheel face formula of the drive by the fluid motor-driven in the hydraulic transmission part wherein or tooth-like or slot type drive mechanism and a corresponding end and the oil well pump connecting rod of oil-extracting well join or chain type or rope type flexible drive parts match, constitute the working in reciprocating mode mechanism of this machine, by by machine,, driving stroke that liquid components and parts assembled group is even constituted and jig frequency adjustment control system are adjusted and are controlled the working in reciprocating mode state of this machine working in reciprocating mode mechanism and control stroke and the jig frequency continuous working in reciprocating mode of the oil well pump of oil well by setting, constitute oil pumper of the present invention thus.This machine is with respect to the improvement innovation part of background technology:

At first, the construction features of the hydraulic transmission part of oil pumper of the present invention are: by connecting base a kind of slide block type is had the change discharge capacity, unsteady flow is to the hydraulic pump of 26S Proteasome Structure and Function and the driving force motor assembly that is complementary, the power output shaft end of motor and the rotor axle head of hydraulic pump directly or via the connecting shaft member are realized being connected, the working solution tank is installed on the top that connects base, via hydraulic control valve, the working solution strainer, pipeline, annex is linked to be hydraulic control and work loop with group between working solution tank and the hydraulic pump, constitutes the hydraulic power supply part of this hydraulic transmission part thus; Directly assemble the wheel face preparation in a kind of periphery of drive plate of slide block type dish transmission low speed high torque hydraulic motor drive with the drive mechanism of rope or band or the corresponding cooperation of chain type flexible drive parts is arranged, promptly constitute the power conversion and the running part of these parts, these two parts are installed on are equipped with the lifting directive wheel, dispose and be used to lay on the support body of the assembly carriage that constitutes by several piece balancing weight stack combinations, link up hydraulic circuit between these two parts by fluid pressure line, promptly constitute the complete structure of this drive disk assembly; Within it in portion's structure, the hydraulic pump that is adopted be one by variable, commutation hydraulic pump and the incorporate pump valve assembly of combination flat valve, the concrete structure of this combination flat valve is, in the body of the housing of pump, be arranged with two valve pockets in parallel along housing inner chamber direction of axis line, the middle part of two valve pockets, one radially liquid-through hole and the communication of housing inner chamber respectively arranged, advancing of working solution, the oil return opening along continuous straight runs, parallel, side by side, be arranged at the outside of valve cavity wall perpendicular to the direction of two valve pocket axis, the perforation that respectively two valve pockets vertically crossed of the bottom outlet of two hydraulic fluid ports, the formation of the built-in part of valve pocket and assemble sequence from inside to outside are successively, by inner valve body, inner spool, interior compression spring, inner chamber is the assembly center spool successively, the outer valve that center valve body that the external compression spring is limited by spacing snap ring again and outer end are provided with the fluid pressure line interface constitutes; The flow rule of this combination flat valve in the course of work of pump is, what link up when the radially liquid-through hole of a valve pocket is the imbibition working chamber of pump, then the inner spool of this valve pocket is inhaled outer moving, feed liquor hydraulic fluid port and this imbibition working chamber are linked up, center valve body is moved in the suction of integral body quilt together together with the center spool that inner chamber is in closed condition, opens back the liquid hydraulic fluid port via the radially liquid-through hole of outer valve and the path between its outer end pipe interface and the connecting line; Synchronous therewith, what the radially liquid-through hole of another valve pocket was linked up must be the discharge opeing working chamber of pump, the radially liquid-through hole that the inner spool of this valve pocket is closed at this moment, center valve body seals outer valve, promptly advancing, return the path in liquid hydraulic fluid port and pump work chamber closes simultaneously, the center spool of center valve body inner chamber is promoted outer being moved by working solution, opens the path between the pipe interface connecting line of the discharge opeing working chamber of pump and outer valve outer end; The working solution discharge capacity of this pump and the conversion of the flow direction are that the axial line by displacement stator part in its body is realized with respect to the variation of the radial displacement of rotor axis of rotation, promptly, radial displacement increases, then discharge capacity increases, radial displacement reduces, then discharge capacity reduces, and to opposite side, then this pump changes working solution and flows to by a side shifting of rotor axis of rotation in radial displacement; The radial displacement of displacement stator is that the piston rod by two balance fluid cylinders on the housing that radially is assemblied in this pump relatively is controlled liquid and alternately back and forth promotes to realize, determining of displacement value, the setting that is the pump work discharge capacity is to limit the piston reset position by the stop screw that the adjustment fluid cylinder covers to realize that the hydraulic power of balance fluid cylinder is to be provided by the control loop in the hydraulic system; On the whole, the whole hydraulic system of hydraulic transmission part is actually the hydraulic system of an open type pump-control-motor volumetric speed control and commutation, is made of hydraulic power transmission work loop and hydraulic control circuit two parts; The basic comprising in hydraulic power transmission work loop is, working solution is after the working solution tank enters the working chamber pressurization of hydraulic pump via feed flow pipeline, feed liquor hydraulic fluid port, combination flat valve, enter the working chamber of hydraulic motor again via combination flat valve, fluid pressure line, after the CD-ROM drive motor rotation, go back to liquid hydraulic fluid port, working solution liquid back pipe road, return and return the working solution tank after liquid filter filters via fluid pressure line, combination flat valve, working solution again, finish whole working cycles; The basic comprising of hydraulic control circuit is, on the end cap of pump, be equipped with the working fluid pressure relay, manual throttle valve and two-position four-way solenoid operated directional valve, be provided with valve pocket in the body of end cap, be equipped with the shuttle valve core, be shaped on relevant liquid-through hole road in advance, be provided with two ends and middle these three hydraulic fluid ports formation shuttle valve structures, to make up the pipe interface place, two outer valve outer ends and the shuttle valve two ends hydraulic fluid port of flat valve connects via control piper, the middle hydraulic fluid port of shuttle valve is connected with the control liquid interface and the reversal valve inlet of pressure switch respectively via the body inner duct of lid, two control liquid hydraulic fluid ports of this reversal valve are via lid body inner duct, control piper respectively with the radially relative housing that is assemblied in pump on the oil circuit interface of two balance fluid cylinders connect, the liquid return hole of this reversal valve is connected via a port of lid body inner duct and choke valve, the another port of this choke valve is connected via the body inner duct of lid and the work leakage fluid cavity volume of pump, constitutes the control loop of native system thus; The in good time state of a control of this control loop under in working order is, the working solution of introducing from the pipe interface place, two outer valve outer ends that makes up flat valve is to two end interfaces of shuttle valve respectively, after the shuttle valve regulation and control, by shuttle valve intermediary interface output pressure control liquid, this control liquid one road is to pressure switch, controls the running of driving force motor automatically or stops with respect to the situation that surpasses, owes of the working fluid pressure rated value of pressure switch setting according to the actual working pressure of this control liquid; This another road of control liquid is to solenoid operated directional valve, when solenoid operated directional valve is subjected to electric control reversing, working fluid pressure state in the two balance fluid cylinders that then communicate with this valve is changed simultaneously, be high voltage variable low pressure, low pressure uprises pressure, the displacement stator that becomes the piston rod driving pump of high fluid pressure balance fluid cylinder moves to the direction that becomes the balance fluid cylinder under the low hydraulic coupling state, the restriction that is subjected to stop screw up to the piston that becomes low hydro-cushion fluid cylinder stops, the speed that moves depends on that choke valve refluxes to the working solution of the balance fluid cylinder that becomes low pressure implements the size of throttling intensity, when throttling intensity big, then translational speed is little, correspondingly be that the process of conversion direction of rotation of hydraulic motor is smoothly slow, when throttling intensity little, then translational speed is big, correspondingly be that the process of conversion direction of rotation of hydraulic motor is rapid relatively.

Secondly, the characteristics of the agent structure of oil pumper of the present invention and working in reciprocating mode mechanism thereof are, match by the following portion connecting structure of fore-stock and the preceding portion connecting structure of base and to constitute hinge and be connected, match by the following portion connecting structure of after-poppet and the middle portion connecting structure of base and to constitute hinge and be connected, constituting hinge with the last portion connecting structure of two stands respectively by the two ends syndeton of the upper connecting rod of forward and reverse spiral adjusting lever body length that can be equipped with by two ends is connected, constituting hinge with the last portion connecting structure of the back portion connecting structure of base and after-poppet respectively by the two ends syndeton of the diagonal member that can change body of rod length by the latched position of the body of rod in the conversion is connected, constitute the both light of oil pumper of the present invention thus, stable again complete rack construction; Wherein, the support body of fore-stock is the planar A shape frame structure by the shaped steel welding fabrication, the top of support body is equipped with the support wheel assembly that is used for the support flexible drive parts of one group of two-wheeled, the support body of after-poppet is the three-dimensional frame structure by channel-section steel or I-shaped shaped steel welding fabrication, what exposed the two sides of support body first half is the original bathtub construction of shaped steel, and up/down perforation is parallel, constituting the hydraulic transmission part directive wheel can be along its track that moves up and down, and the leading flank in top is equipped with a support wheel that is used for the support flexible drive parts; Hydraulic transmission part is disposed at the anterior locations of after-poppet, on the balance weight body carriage of its support body both sides, be placed with the balancing weight combination of determining weight according to live load, the combination of this balancing weight constitutes combined counterbalance body in this oil pumper course of work with this hydraulic transmission part integral body, place by the wheel face that is assemblied in the directive wheel on its support body in the channel suspending rail of after-poppet, constitute the guide frame that this balance weight body moves up and down along this track; By flexible drive parts doubling placed in the middle, hang on the wheel face of support wheel of after-poppet top leading flank, part body after the doubling drive of crossing hydraulic transmission part arranged side by side, parallel, behind the formation that matches with the drive mechanism of the wheel face drive mechanism, it is sagging after the support wheel at fore-stock support body top is commissioned, the end assembling is used to connect the polished rod eye of oil-extracting well oil well pump connecting rod, constitutes the working in reciprocating mode transmission mechanism of this machine; On the overall structure of this machine, change pull bar length by turn frame upper connecting rod spiral, can change the inclination angle of fore-stock, realize the locus of support wheel before pressing need of work determines, as required, unload the combined counterbalance piece, decompose the hinge that is connected of base rear portion and diagonal member bottom and after-poppet top and upper connecting rod bottom, after-poppet and fore-stock order can be toppled over backward, fall to being put in base.

Once more, the formation characteristics of the adjustment control system of the driving stroke of oil pumper of the present invention and jig frequency are: a side of support body frontal plane that vertically is installed on the after-poppet of frame by a linear elongate column body via the coupling member at two ends, body in this column is provided with upper and lower two spacing members on one's body, the latched position of this two member on column all can upper and lower running transform, constitutes the guiding mechanism of driving stroke increase and decrease in this system thus; One oscillating structural member, it is the semicircle plate-like body at center with the axle center with the mating holes that supports bearing pin that its main part is one, this discoid body outer circumference surface, radius concentric circles segmental arcs such as two side ends and middle segmental arc are, between two sections concentric circles segmental arcs that are radius less than 5 to 10 millimeters of this excircle radiuses, constitute the cam working face of this member thus around axis swing, position, both sides beyond cam working face, one side is equipped with the balancing weight that the end has breach, and opposite side is provided with cantilever arm, in the end of cantilever arm, via hinged arm-tie, hang a weight, balancing weight is 1 to 2 with the weight ratio of weight, constitutes wobble component thus; This assembly is by supporting the installing hole assembly on bearing pin and a bearing top, constitute swing mechanism, this swing mechanism is installed on the corresponding position of the guiding mechanism with the driving stroke increase and decrease on the support body of hydraulic transmission part, promptly, swing mechanism in company with hydraulic transmission part on, in the process of following motion, the column of driving stroke guiding mechanism is contained in the balancing weight breach in the wobble component all the time, the balancing weight of swing mechanism not with the driving stroke guiding mechanism on or touch down under the situation that member contacts, weight in the wobble component keeps being seated on the bearing, wobble component is in equilibrium state, promptly, the cantilever arm line of balancing weight and oscillating structural member is horizontal, when its in the process that the companion hydraulic transmission part moves up and down, go upward to the upward shake-up member that balancing weight touches the driving stroke guiding mechanism, then balancing weight one side of oscillating structural member with respect to bearing to lower swing, cantilever arm one side is together with weight upwards swing together, touch down the shake-up member when coming downwards to balancing weight, then balancing weight one side of oscillating structural member is with respect to upwards swing of bearing, cantilever arm one side direction lower swing, it is motionless that weight is still in bearing, constitutes the mechanical controller structure of control working in reciprocating mode situation in this system thus; Four travel switches are along the circumference radial line direction of oscillating structural member discoid body, working contact points to the center of circle, become radial distribution, be assemblied on the pedestal of bearing, under oscillating structural member is in equilibrium state, the contact of four travel switches is all corresponding with the small radius segmental arc of cam working face, be in non-shake-up state, to swing to cam working face long radius segmental arc corresponding with the contact of travel switch when oscillating structural member, then the contact of the trip switch promptly is touched, change the on off operating mode of institute's connecting circuit thereupon, balancing weight one side of now setting four travel switch self-swinging assemblies putting in order along clockwise direction is 1,2,3,4, then travel switch 1 and 4 constant close contact insert the adhesive holding circuit of driving force motor power supply relay electromagnet via the lead series connection, after the auxiliary constant open contact of auxiliary reclay in the adhesive holding circuit of the constant close contact of travel switch 2 and the valve control electromagnet of solenoid operated directional valve is connected, be connected in parallel with the constant open contact of travel switch 3 and insert the adhesive holding circuit of valve control electromagnet, constitute the electrical control circuit of control working in reciprocating mode state in this system thus; To the hydraulic power transmission work loop of motor, introduce working solution by hydraulic pump to shuttle valve, as the control hydraulic power source, be hydraulic control circuit in this system through the pressure liquid of shuttle valve regulation and control output via fluid pressure line to two balance fluid cylinder, to two-position four-way solenoid operated directional valve, the hydraulic circuit that constituted to choke valve, to pump housing internal leakage liquid cavity volume again; Gather, the complete structure and the control sequence of whole adjustment control system are: under the original state, the combined counterbalance body that comprises hydraulic transmission part rests on the base of frame, oil-well pump of oil well is in the top dead centre of driving stroke, the balancing weight that the following shake-up member of driving stroke guiding mechanism touches in the swing mechanism makes balancing weight one side of oscillating structural member be in the state of upwards swinging maximum position, travel switch 2 and travel switch 4 are in simultaneously is touched, the state that constant close contact is opened, the valve control electromagnet of solenoid operated directional valve is in release conditions because of its adhesive holding circuit opens circuit, start driving force motor, hydraulic pump in the hydraulic transmission part is started working, drive hydraulic motor and drive drive towards driving the balance weight body rising, the direction rotation that oil-well pump of oil well descends and resets, oil pumper begins balance weight body rising accumulation of energy thus, the driving stroke that oil-well pump of oil well descends and resets, the balancing weight that rises to wobble component in the mechanical controller structure when balance weight body touches the upper limit member of stroke guiding mechanism, then balancing weight one side of oscillating structural member with respect to bearing to lower swing, the contact of travel switch 3 is touched, the constant open contact closure, the adhesive holding circuit of the valve control electromagnet of solenoid operated directional valve is connected, the valve control electromagnet adhesive, the solenoid operated directional valve commutation, feed the height of two equilibrium liquid cylinder working liquid of hydraulic pump, the low-pressure state is changed mutually, after this, the piston rod that feeds the balance fluid cylinder of high pressure working solution promotes the interior displacement stator of hydraulic pump body and moves to the direction of the balance fluid cylinder that feeds the low-pressure working solution, make the axial line of displacement stator be positioned at a side shifting of rotor axis of rotation to opposite side by original state, translational speed depends on the throttling intensity of choke valve in the loop, synchronous with it, the working solution flow direction of hydraulic pump and the direction of rotation of hydraulic motor and drive thereof are thereupon with corresponding pace of change conversion, oil pumper is by the balance weight body accumulation of energy of rising, acting is assisted in the balance weight body decline that is converted to that the driving stroke that oil-well pump of oil well decline resets is slowly level and smooth, the driving stroke that oil well pump rises and pumps, the balancing weight that drops to oscillating structural member in the mechanical controller structure when the combined counterbalance body touches the lower limit member of stroke guiding mechanism, then balancing weight one side of oscillating structural member is with respect to upwards swing of bearing, the contact of travel switch 2 is touched, constant close contact is opened, the adhesive holding circuit of the valve control electromagnet of solenoid operated directional valve opens circuit, valve control electromagnet discharges, solenoid operated directional valve commutates once more, feed the height of two equilibrium liquid cylinder working liquid of hydraulic pump, the low-pressure state is conversion mutually once more, the displacement stator is under the promotion that feeds pressure working solution equilibrium liquid cylinder piston rod, axial line moves to opposite side once more by a side of rotor axis of rotation of living in, oil pumper restarts balance weight body rising accumulation of energy, the driving stroke that oil-well pump of oil well descends and resets, go round and begin again, keep continuous working in reciprocating mode; If this control system breaks down, the balancing weight that rises to wobble component when the generation balance weight body touches the upper limit member, make oscillating structural member balancing weight one side direction lower swing touch the contact action of travel switch 3, but the drive of hydraulic transmission part does not change direction of rotation, balance weight body continues up, then oscillating structural member continues to lower swing, and then the contact action that touches travel switch 1, constant close contact is opened, disconnect driving force motor power supply relay electromagnetic actuation holding circuit, the motor stall, oil pumper quits work, equally, the balancing weight that drops to wobble component when the generation balance weight body touches the lower limit member, make the contact action that swing touches travel switch 2 on oscillating structural member balancing weight one side direction, but the drive of hydraulic transmission part does not change direction of rotation, balance weight body continues descending, then oscillating structural member continues relatively upwards swing, touches the contact action of travel switch 4, and constant close contact is opened, disconnect driving force motor power supply relay electromagnetic actuation holding circuit, the motor stall, oil pumper quits work, and only fixes a breakdown, restart motor, oil pumper can work on; By adjusting the latched position of upper limit member on column of driving stroke guiding mechanism, can change the working in reciprocating mode stroke of oil pumper; By adjusting the radially relative stop screw on the cylinder cap of two balance fluid cylinders of assembling of hydraulic pump respectively, promptly, change the reseting limit position of cylinder inner carrier, can change the discharge capacity of the working solution of hydraulic pump respectively in positive and negative two flow directions, and then change the rise operating rate of oil pumping and decline reset stroke of oil-well pump of oil well respectively, just change the work jig frequency of oil pumper; Be assemblied in choke valve on the pump end cap by adjustment, can change hydraulic pump in the process that the conversion working solution flows to, the axle center that the piston rod of balance fluid cylinder promotes the displacement stator just changes the conversion speed of oil pumper between ascending, descending working in reciprocating mode stroke by a side shifting of the rotor axis of rotation translational speed to opposite side.

The beneficial effect that technique scheme can cause is:

1, selected slide block type volume adjustable hydraulic pump and slide block type dish transmission low speed high torque hydraulic motor are a kind of low fault, long-life novel hydraulic element, are the assurance that provides the foundation of the functional reliability of complete machine and long working life.

2, the open type pump-control-motor volumetric speed control that is adopted and the hydraulic system of commutation, loop constitute simple relatively, and system's in-fighting is low, and fault rate is low and judge and get rid of easily.

3, complete machine structure is simple, light, uses, safeguards, maintenance is simple and convenient relatively, obviously energy-conservation, and especially, mixed economy, the technical advantage of long stroke, low jig frequency type are the most obvious.

Four, description of drawings:

Fig. 1 is embodiments of the invention---the integrally-built elevation of typical type of reciprocating petroleum beam-pumping unit with hydraulic transmission, and Fig. 2 is its lateral view; Fig. 4 is the core component of this embodiment---the elevation of hydraulic transmission part, Fig. 3 is its lateral view, Fig. 5 is the partial enlarged drawing at position shown in Figure 3, Fig. 6 and Fig. 7 are the sectional views of position shown in Figure 5, Fig. 8 is the partial enlarged drawing at position shown in Figure 4, and Fig. 9 is its vertical view, and Figure 10, Figure 11, Figure 12, Figure 13 are the elevations of four kinds of different operating states of structure shown in Figure 8, Figure 14 is that present embodiment is convenient transportation, is in the elevation that folding is put state.

Five, embodiment:

At this, as embodiment the specific embodiment of the present invention is described by the typical type of a hydraulic drive petroleum beam-pumping unit.

The overall structure of this embodiment is as depicted in figs. 1 and 2: being connected through the hinge by base 01, fore-stock 02, after-poppet 03, upper connecting rod 04, diagonal member 05 constitutes not only light but also stable rack construction.(in addition referring to Fig. 3 to Fig. 8) by connect base 0700 with slide block type variable, commutation hydraulic pump 071, motor 070, working solution tank 075 and working solution return liquid filter 076 and control valve, the pipeline fittings group holds together and constitutes hydraulic power supply; Directly assemble the transmission sheave 0720 that outer peripheral face is provided with twice V-arrangement driving groove by the periphery of the drive plate of slide block type dish transmission low speed high torque hydraulic motor 072 and constitute driving force member, the cross section tapering of V-shaped groove is between 45 ° to 65 °; By support body 073 that this hydraulic power supply and driving force member assembling is as a whole, linking up by fluid pressure line is complete hydraulic circuit, constitutes the hydraulic transmission part of telotism; This component configuration is in the front of the after-poppet 03 of frame, and the wheel face that is assemblied in the directive wheel 079 on the support body 073 matches with the flute profile guide frame of after-poppet 03 both sides, constitutes the guiding mechanism that these parts move up and down along after-poppet; The integral body of these parts is configured for the balance weight body of all intrinsic weight that comprise the oil-well pump of oil well object that balance polished rod eye 063 hung together together with the assembly that falls to putting the several piece balancing weight 074 on the support body 073.Wire rope 06 doubling placed in the middle as flexible drive parts, hang in the wheel face groove of support sheave 062 of the top leading flank that is installed in after-poppet 03, the rope body is crossed the wheel face of the transmission sheave 0720 of driving force member, behind the formation that matches with the V-arrangement driving groove friction drive mechanism, sagging behind the wheel face of the support wheel assembly 061 that constitutes with the pulley coaxle assembling by two wire rope at the top of the fore-stock 02 that is assemblied in frame, end assembling is used to connect the polished rod eye 063 of oil well oil-pumping pump connecting link, constitutes the complete working in reciprocating mode mechanism of oil pumper of the present invention thus.Be fitted with upper limit member 083 and lower limit member 082 on the body of rod of elongate rod 081, both ends are installed on a side of the frontal plane of after-poppet 03 via connector along the plummet direction, constitute the driving stroke guiding mechanism; Constitute wobble component by oscillating structural member 092 and balancing weight 093, arm-tie 094, weight 095 assembling, be assemblied on the bearing 091 via central pin shaft 096, together with the controlling organization of the reciprocal conversion of 1,2,3, the 4 one formation driving stroke of four travel switches on the pedestal that is assemblied in bearing.Driving stroke guiding mechanism and this controlling organization are combined, and the driving stroke that constitutes this embodiment is adjusted controlling organization.Constitute the adjustment control system that this embodiment realizes continuous working in reciprocating mode together by control loop and relevant control circuit in the hydraulic system of driving stroke adjustment controlling organization, hydraulic transmission part.

In the concrete structure of this embodiment:

The entity structure of the hydraulic system that hydraulic transmission part constituted such as Fig. 3 are to shown in Figure 7, by two groups of identical in structure parts: inner valve body 001, inner spool 002, interior compression spring 003, center valve body 004, center spool 005, external compression spring 006, spacing snap ring 007, outer valve 008 assembled in sequence constitute the combination flat valve in prefabricated two valve pockets of the housing of hydraulic pump 071; In the end cover body of hydraulic pump 071, be shaped on valve pocket in advance, be equipped with shuttle valve 0713, be shaped on the liquid flow hole road in advance, constitute the installation base plate of pressure switch, solenoid operated directional valve and choke valve, the two-position four way change valve 077 of pressure switch 078, single electromagnet, choke valve 0714 assemble on it; Feed flow pipeline 0752 is connected the feed liquor hydraulic fluid port 0715 of working solution tank and hydraulic pump combination flat valve, liquid back pipe road 0751 is returned working solution to liquid filter 076 and is connected with the liquid hydraulic fluid port 0714 that returns of the combination flat valve of hydraulic pump, pressure liquid pipeline 0753 and 0,754 two working solutions with the pipe interface of two outer valves 008 of the combination flat valve of hydraulic pump and hydraulic motor 072 advance, oil drain out is connected, and constitute the major loop (referring to Fig. 3 and Fig. 6) of this hydraulic system thus; Connect by the pipe interface of the combination flat valve outer valve of pipeline 0755 and pipeline 07576 self-hydraulic pump and the two-port of shuttle valve 0713, the middle liquid outlet of shuttle valve 0713 is linked up with the inlet of pressure switch 078 and two-position four-way solenoid operated directional valve 077 respectively via the prefabricated duct in the end cover body of hydraulic pump, two control liquid hydraulic fluid ports of solenoid operated directional valve 077 are via the prefabricated duct in the end cover body of hydraulic pump, pipeline 0757 and pipeline 0758 are connected with balance fluid cylinder 0711 and 0712 respectively, the liquid hydraulic fluid port that returns of solenoid operated directional valve 077 is linked up via a port of pump end cover body inner duct and choke valve 0714, and the another port of choke valve 0714 is linked up via the inner chamber that retains leakage fluid of pump end cover body inner duct and pump; Constitute the control loop of this hydraulic system thus.

The concrete structure of the controlling organization that driving stroke is back and forth changed as shown in Figure 8, the one end assembling balancing weight 093 of oscillating structural member 092, the other end hangs weight 095 via arm-tie 094 and constitutes wobble component, wherein, balancing weight 093 is 1 to 2 with the weight ratio of weight 095, this assembly is assemblied on the bearing 091 via bearing pin 096, and the axle center of the corresponding bearing pin 096 of the contact of four travel switches 1,2,3,4 becomes on the radial pedestal that is assemblied in bearing 091.Balancing weight 093 not with situation that the upper limit member or the lower limit member of driving stroke guiding mechanism contact under, wobble component is in equilibrium state as shown in Figure 8 all the time, and the contact of four travel switches all is in the non-shake-up state that the cam working face with oscillating structural member 092 is separated.What Figure 10 was extremely shown in Figure 13 is four kinds of different operating states of this mechanism.

The complete course of work of this embodiment is, as shown in Figure 1, under original state, hydraulic transmission part adds several piece balancing weight 074 and constitutes the combined counterbalance body as an assembly, rest on the base 01 of after-poppet 03 front side, balancing weight 093 1 sides of the wobble component of driving stroke controlling organization are in the upwards extreme position (referring to Figure 13) of swing under the restriction of the lower limit member 082 of driving stroke guiding mechanism, the contact of travel switch 2 and travel switch 4 all is touched, the constant close contact of two switches all is opened, solenoid operated directional valve electromagnetic actuation holding circuit opens circuit, this valve is in the commutation position that electromagnet discharges, the adhesive holding circuit of the power supply relay of driving force motor opens circuit, and motor is in off working state.The actuating motor running, hydraulic pump works, be the pressure working solution in balance fluid cylinder 0711 working cylinder, be operating on low voltage liquid in balance fluid cylinder 0712 working cylinder, the drive of hydraulic motor relies on the frictional force between its race and the wire rope to drive the combined counterbalance body by the direction rotation of rising, the driving stroke that beginning combined counterbalance body rising accumulation of energy, oil-well pump of oil well descend and reset; The balancing weight 093 that rises to the wobble component of driving stroke controlling organization when the combined counterbalance body touches the upper limit member 083 of driving stroke guiding mechanism, make it to be rocked to situation shown in Figure 10 downwards with respect to bearing, the contact of travel switch 3 is touched, the constant open contact closure, the electromagnetic actuation holding circuit of solenoid operated directional valve is connected, the solenoid operated directional valve commutation, hydraulic coupling in the working cylinder of two balance fluid cylinders is changed mutually, the working solution of balance fluid cylinder 0712 becomes high hydraulic pressure by low hydraulic pressure, the displacement stator that its piston rod promotes hydraulic pump moves the level and smooth working solution flow direction conversion of realization, realize the commutation rotation of hydraulic motor synchronously, (simultaneously, the piston rod that promotes balance fluid cylinder 0711 retreats, operating on low voltage liquid in the working cylinder retains cavity volume via the leakage fluid that solenoid operated directional valve and choke valve enter hydraulic pump, the speed of hydraulic motor direction of rotation transfer process depends on the speed of hydraulic pump liquid flow path direction transfer process, displacement stator displacement speed, the advance and retreat speed of two balance liquid cylinder pistons, the throttling intensity that finally depends on choke valve 0714, therefore, by adjusting this choke valve, can realize changing the fast slow process of hydraulic motor rotation direction conversion.) promptly, present embodiment is converted to the driving stroke that the combined counterbalance body descends and assists acting, oil-well pump of oil well to rise and pump synchronously.The balancing weight that drops to stroke controlling organization wobble component when the combined counterbalance body touches the lower limit member of driving stroke guiding mechanism, make it upwards be rocked to situation shown in Figure 12 with respect to bearing, the contact of travel switch 2 is touched, constant close contact is opened, the electromagnetic actuation holding circuit of solenoid operated directional valve opens circuit, solenoid operated directional valve commutates once more, working fluid pressure in the two equilibrium liquid cylinder working cylinders is conversion mutually once more, the rotation that commutates once more of the drive of hydraulic motor, present embodiment carries out combined counterbalance body rising accumulation of energy once more, the driving stroke that oil-well pump of oil well descends and resets.Go round and begin again, promptly realized the continuous working in reciprocating mode of present embodiment.When system breaks down, Figure 11 and situation shown in Figure 13 appear, and all can cut off the driving force motor power supply automatically and shut down, only fix a breakdown, can restart work.By the stop screw of difference turn balance fluid cylinder 0711 and balance fluid cylinder 0712, changed the qualification position of piston reset, can change the oil pumping stroke of present embodiment or the operating rate of reset stroke respectively.Transportation for convenience or mobile, can remove balancing weight 074 combination, unload directive wheel 079, decompose the hinge between upper connecting rod 04 and after-poppet 03, diagonal member 03 and the base 01, after-poppet 03 and fore-stock 02 order is toppled over fall to putting with base 01 on, as shown in figure 14.

Claims (3)

1, a kind of reciprocating petroleum beam-pumping unit with hydraulic transmission, by comprising hydraulic pump, motor, control valve, the pipeline auxiliary is at interior Hydraulic Elements and the associated mechanical part assembled group formation hydraulic transmission part that holds together, these parts and base, the rack section that support and connecting elements assembly thereof constitute constitutes the agent structure of this machine together, belt that wheel face formula by the hydraulic motor drive in the hydraulic transmission part wherein or tooth-like or slot type drive mechanism and a corresponding end and the oil well pump connecting rod of oil-extracting well join or chain type or rope type flexible drive parts match, constitute the working in reciprocating mode mechanism of this machine, by by machine,, liquid components and parts assembled group connects the driving stroke and the jig frequency adjustment control system that are constituted and adjusts and control stroke and the jig frequency continuous working in reciprocating mode of the oil well pump of this machine working in reciprocating mode mechanism traction oil well by setting, it is characterized in that:

By connecting base a kind of slide block type had the discharge capacity of change, unsteady flow to the hydraulic pump of 26S Proteasome Structure and Function and the driving force motor assembly that is complementary, the power output shaft end of motor and the rotor axle head of hydraulic pump directly or via the connecting shaft member are realized being connected, the working solution tank is installed on the top that connects base, via hydraulic control valve, working solution strainer, pipeline, annex group between working solution tank and the hydraulic pump is linked to be hydraulic control and work loop, constitutes the hydraulic power supply part of this hydraulic transmission part; Directly assembling the wheel face preparation in a kind of periphery of drive plate of slide block type dish transmission low speed high torque hydraulic motor has drive with the drive mechanism of rope or band or the corresponding cooperation of chain type flexible drive parts, promptly constitutes the power conversion and the running part of these parts; These two parts are installed on are equipped with the lifting directive wheel, dispose and be used to lay on the support body of the assembly carriage that constitutes by several piece balancing weight stack combinations, link up hydraulic circuit between these two parts by fluid pressure line, promptly constitute the complete structure of this drive disk assembly; Within it in portion's structure, the hydraulic pump that is adopted be one by variable, commutation hydraulic pump and the incorporate pump of combination flat valve, valve assembly, the concrete structure of its combination flat valve is, in the body of the housing of pump, be arranged with two valve pockets in parallel along housing inner chamber direction of axis line, the middle part of two valve pockets, one radially liquid-through hole and the communication of housing inner chamber respectively arranged, advance with working solution, what the liquid back pipe road joined advances, the oil return opening along continuous straight runs, parallel, side by side, be arranged at the outside of valve cavity wall perpendicular to the direction of two valve pocket axis, the perforation that respectively two valve pockets vertically crossed of the bottom outlet of two hydraulic fluid ports, the formation of the built-in part of valve pocket and assemble sequence from inside to outside are successively, by inner valve body, inner spool, interior compression spring, the inner chamber center valve body that limited by spacing snap ring again of assembly center spool and external compression spring and the outer end outer valve that is provided with the fluid pressure line interface successively constitutes; The flow rule of this combination flat valve in the course of work of pump is, what link up when the radially liquid-through hole of a valve pocket is the imbibition working chamber of pump, then the inner spool of this valve pocket is inhaled outer moving, open the fluid course of feed liquor hydraulic fluid port and this imbibition working chamber, center valve body is moved in the suction of integral body quilt together together with the center spool that inner chamber is in closed condition, opens back the liquid hydraulic fluid port via the radially liquid-through hole of outer valve and the passage between outer end pipe interface and the institute's connecting line; Synchronous therewith, what the radially liquid-through hole of another valve pocket was linked up must be the discharge opeing working chamber of pump, the radially liquid-through hole that the inner spool of this valve pocket is closed at this moment, center valve body seals outer valve, promptly advancing, return the path in liquid hydraulic fluid port and pump work chamber closes simultaneously, the center spool of center valve body inner chamber is promoted outer being moved by working solution, opens the path between the pipe interface institute connecting line of the discharge opeing working chamber of pump and outer valve outer end; The working solution discharge capacity of this pump and the conversion of the flow direction are that the axial line by displacement stator part in its body is realized with respect to the variation of the radial displacement of rotor axis of rotation, promptly, radial displacement increases, then discharge capacity increases, radial displacement reduces, then discharge capacity reduces, and to opposite side, then this pump changes working solution and flows to by a side shifting of rotor axis of rotation in radial displacement; The radial displacement of displacement stator is that the piston rod by two balance fluid cylinders on the housing that radially is assemblied in this pump relatively is controlled liquid and alternately back and forth promotes to realize, determining of displacement value, the setting that is the pump work discharge capacity is to limit the piston reset position by the stop screw that the adjustment fluid cylinder covers to realize that the hydraulic power of balance fluid cylinder is to be provided by the control loop in the hydraulic system; On the whole, the whole hydraulic system of hydraulic transmission part is the hydraulic system of an open type pump-control-motor volumetric speed control and commutation, is made of hydraulic power transmission work loop and hydraulic control circuit two parts; The basic comprising in hydraulic power transmission work loop is, working solution is after the working solution tank enters the working chamber pressurization of hydraulic pump via feed flow pipeline, feed liquor hydraulic fluid port, combination flat valve, enter the working chamber of hydraulic motor again via combination flat valve, fluid pressure line, after the CD-ROM drive motor rotation, go back to liquid hydraulic fluid port, working solution liquid back pipe road, return and return the working solution tank after liquid filter filters via fluid pressure line, combination flat valve, working solution again, finish whole working cycles; The basic comprising of hydraulic control circuit is, on the end cap of pump, be equipped with the working fluid pressure relay, manual throttle valve and two-position four-way solenoid operated directional valve, be provided with valve pocket in the body of end cap, be equipped with the shuttle valve core, be shaped on relevant liquid-through hole road in advance, be provided with two ends and middle these three hydraulic fluid ports formation shuttle valve structures, the pipe interface place, two outer valve outer ends that will make up flat valve via control piper connects with shuttle valve two ends hydraulic fluid port respectively, the middle hydraulic fluid port of shuttle valve is connected with the control liquid interface and the solenoid operated directional valve inlet of pressure switch respectively via the body inner duct of end cap, two control liquid hydraulic fluid ports of this reversal valve are via lid body inner duct, control piper respectively with the radially relative housing that is assemblied in pump on the oil circuit interface of two balance fluid cylinders connect, the liquid return hole of this reversal valve is connected via a port of end cover body inner duct and choke valve, the another port of this choke valve is connected via the body inner duct of end cap and the work leakage fluid cavity volume of pump, constitutes the control loop of native system thus; The in good time state of a control of this control loop under in working order is, the working solution that the fluid pressure line that advance with hydraulic motor in the self-hydraulic power transmission work loop respectively, oil drain out communicates is introduced is to two end interfaces of shuttle valve, after the shuttle valve regulation and control, by shuttle valve intermediary interface output pressure control liquid, this control liquid one road is to pressure switch, controls the running of driving force motor automatically or stops with respect to the situation that surpasses, owes of the working fluid pressure rated value of pressure switch setting according to the actual working pressure of this control liquid; This another road of control liquid is to solenoid operated directional valve, when solenoid operated directional valve is subjected to electric control reversing, working fluid pressure state in the two balance fluid cylinders that then communicate with this valve is changed simultaneously, be high voltage variable low pressure, low pressure uprises pressure, the displacement stator that becomes the piston rod driving pump of high fluid pressure balance fluid cylinder moves to the direction that becomes the balance fluid cylinder under the low hydraulic coupling state, the restriction that is subjected to stop screw up to the piston that becomes low hydro-cushion fluid cylinder stops, the speed that moves depends on that choke valve refluxes to the working solution of the balance fluid cylinder that becomes low pressure implements the size of throttling intensity, when throttling intensity big, then translational speed is little, correspondingly be that the process of conversion direction of rotation of hydraulic motor is smoothly slow, when throttling intensity little, then translational speed is big, correspondingly be that the process of conversion direction of rotation of hydraulic motor is rapid relatively.

2, a kind of reciprocating petroleum beam-pumping unit with hydraulic transmission as claimed in claim 1, feature is, rack section in its agent structure, match by the following portion connecting structure of fore-stock and the preceding portion connecting structure of base and to constitute hinge and be connected, match by the following portion connecting structure of after-poppet and the middle portion connecting structure of base and to constitute hinge and be connected, by the two ends syndeton of the upper connecting rod that can come the adjusting lever body length by forward and reverse spiral that two ends are equipped with respectively with preceding, the last portion connecting structure of back two stands constitutes hinge and connects, constituting hinge with the last portion connecting structure of the back portion connecting structure of base and after-poppet respectively by the two ends syndeton of the diagonal member that can change body of rod length by the latched position of the body of rod in the conversion is connected, constitute both light, stable again complete rack construction thus; Wherein, the support body of fore-stock is the planar A shape frame structure by the shaped steel welding fabrication, the top of support body is equipped with the support wheel assembly that is used for the support flexible drive parts of one group of two-wheeled, the support body of after-poppet is the three-dimensional frame structure by channel-section steel or I-shaped shaped steel welding fabrication, what exposed the two sides of support body first half is the original bathtub construction of shaped steel, and up/down perforation is parallel, constituting the directive wheel that is assemblied on the hydraulic transmission part support body can be along its track that moves up and down, and the leading flank in support body top is equipped with a support wheel that is used for the support flexible drive parts; Hydraulic transmission part is disposed at the position of after-poppet front, on the balancing weight combined bracket of these parts support body both sides, be placed with the balancing weight combination of determining weight according to live load, constitute combined counterbalance body in this oil pumper course of work jointly by the whole combination of this hydraulic transmission part with these balancing weights; The wheel face that is assemblied in the directive wheel on the hydraulic transmission part support body places in the channel suspending rail of after-poppet, constitutes the guide frame that this combined counterbalance body moves up and down along this track; Flexible drive parts doubling placed in the middle, hang on the wheel face of support wheel of after-poppet upper front, part body after the doubling drive of crossing hydraulic motor in the hydraulic transmission part arranged side by side, parallel, behind the formation that matches with the drive mechanism of the wheel face drive mechanism, it is sagging after the support wheel at fore-stock support body top is commissioned, the end is equipped with the polished rod eye that is used to connect oil-extracting well oil well pump connecting rod, constitutes the working in reciprocating mode transmission mechanism of this machine; In this agent structure, change the length of upper connecting rod by turn frame upper connecting rod spiral, can change the inclination angle of fore-stock, and then the locus of support wheel before changing; Unload the balancing weight combination, the hinge that is connected of the base rear portion by decomposing frame and diagonal member bottom and after-poppet top and upper connecting rod bottom, after-poppet and fore-stock order can be toppled over backward, fall to being put in base, become only 2 meters approximate cuboid of clear height, so that vehicle-mounted transportation or mobile.

3, a kind of reciprocating petroleum beam-pumping unit with hydraulic transmission as claimed in claim 1, feature is to have unique driving stroke and jig frequency adjustment control system, vertically be installed on the side of support body frontal plane of the after-poppet of frame via the coupling member at two ends by a linear elongate column body, body in this column is provided with upper and lower two spacing members on one's body, the latched position of this two member on column all can upper and lower running transform, constitutes the guiding mechanism of driving stroke increase and decrease in this system thus; One oscillating structural member, it is the semicircle plate-like body at center with the axle center with the mating holes that supports bearing pin that its main part is one, the outer circumference surface of this discoid body, radius concentric circles segmental arcs such as two side ends and middle segmental arc are, between this three segmental arc the concentric circles segmental arcs of two sections radiuses less than 5 to 10 millimeters of its excircle radiuses, constitute the cam working face of this member thus around axis swing, position, both sides beyond cam working face, one side is equipped with the balancing weight that the end has breach, and opposite side is provided with cantilever arm, in the end of cantilever arm, via hinged arm-tie, hang a weight, balancing weight is 1 to 2 with the weight ratio of weight, constitutes wobble component thus; This assembly matches by support bearing pin and installing hole and is assemblied on the bearing, constitute swing mechanism, this swing mechanism be installed on the support body of hydraulic transmission part with the corresponding position of driving stroke guiding mechanism, promptly, swing mechanism in company with hydraulic transmission part on, in the process of following motion, the column of driving stroke guiding mechanism is contained in the balancing weight breach in the swing mechanism all the time, the balancing weight of swing mechanism not with the driving stroke guiding mechanism on or touch down under the situation that member contacts, weight in the wobble component keeps being seated on the bearing, wobble component is in equilibrium state, promptly, the cantilever arm line of balancing weight and oscillating structural member is horizontal, when its in the process that the companion hydraulic transmission part moves up and down, go upward to the upward shake-up member that balancing weight touches the driving stroke guiding mechanism, then balancing weight one side of swing mechanism with respect to bearing to lower swing, cantilever arm one side is together with weight upwards swing together, touch down the shake-up member when coming downwards to balancing weight, then balancing weight one side of oscillating structural member is with respect to upwards swing of bearing, cantilever arm one side direction lower swing, it is motionless that weight is still in bearing, constitutes the mechanical controller structure of control working in reciprocating mode situation in this system thus; Four travel switches are along the circumference radial line direction of oscillating structural member discoid body, working contact points to the center of circle, become radial distribution, be assemblied on the pedestal of bearing, under oscillating structural member is in equilibrium state, the contact of four travel switches is all corresponding with the small radius segmental arc of cam working face, be in non-shake-up state, to swing to cam working face long radius segmental arc corresponding with the contact of travel switch when oscillating structural member, then the contact of the trip switch promptly is touched, change the on off operating mode of institute's connecting circuit thereupon, balancing weight one side of setting four travel switch self-swinging assemblies putting in order along clockwise direction is 1,2,3,4, the constant close contact of travel switch (1) and travel switch (4) inserts the adhesive holding circuit of driving force motor power supply relay electromagnet via the lead series connection, after the auxiliary constant open contact of auxiliary reclay in the constant close contact of travel switch (2) and the adhesive holding circuit of the valve control electromagnet of solenoid operated directional valve is connected, be connected in parallel with the constant open contact of travel switch (3) and insert the adhesive holding circuit of valve control electromagnet, constitute the electrical control circuit in this system thus; By introducing working solution in the hydraulic power transmission work loop of the full motor of hydraulic pump to shuttle valve, through the pressure liquid of shuttle valve regulation and control output as the control hydraulic power source, via fluid pressure line to the hydraulic control circuit that is to two-position four-way solenoid operated directional valve, two balance fluid cylinders, the hydraulic circuit that constituted to choke valve, to pump housing internal leakage liquid cavity volume again in this system; Gather, the complete structure and the control sequence of whole adjustment control system are: under the original state, the combined counterbalance body that comprises hydraulic transmission part rests on the base of frame, oil-well pump of oil well is in the top dead centre of driving stroke, the balancing weight that the following shake-up member of driving stroke guiding mechanism touches in the swing mechanism makes balancing weight one side of oscillating structural member be in the state of upwards swinging maximum position, travel switch (2) and travel switch (4) are in simultaneously is touched, the state that constant close contact is opened, the valve control electromagnet of solenoid operated directional valve is in release conditions because of its adhesive holding circuit opens circuit, start driving force motor, hydraulic pump in the hydraulic transmission part is started working, drive hydraulic motor and drive drive towards driving the balance weight body rising, the direction rotation that oil-well pump of oil well descends and resets, oil pumper begins balance weight body rising accumulation of energy thus, the driving stroke that oil-well pump of oil well descends and resets, the balancing weight that rises to wobble component in the mechanical controller structure when balance weight body touches the upper limit member of stroke guiding mechanism, then balancing weight one side of oscillating structural member with respect to bearing to lower swing, the contact of travel switch (3) is touched, the constant open contact closure, the adhesive holding circuit of the valve control electromagnet of solenoid operated directional valve is connected, the valve control electromagnet adhesive, the solenoid operated directional valve commutation, feed the height of two equilibrium liquid cylinder working liquid of hydraulic pump, the low-pressure state is changed mutually, the piston rod that feeds the balance fluid cylinder of high pressure working solution promotes the interior displacement stator of hydraulic pump body and moves to the direction of the balance fluid cylinder that feeds the low-pressure working solution, make the axial line of displacement stator be positioned at a side shifting of rotor axis of rotation to opposite side by original state, translational speed depends on the throttling intensity of choke valve in the loop, synchronous with it, the working solution flow direction of hydraulic pump and the direction of rotation of hydraulic motor and drive thereof are thereupon with corresponding pace of change conversion, this oil pumper is by the balance weight body accumulation of energy of rising, the driving stroke that oil-well pump of oil well decline resets is converted to the auxiliary acting of balance weight body decline, the driving stroke that oil well pump rises and pumps, the balancing weight that drops to oscillating structural member in the mechanical controller structure when balance weight body touches the lower limit member of stroke guiding mechanism, then balancing weight one side of oscillating structural member is with respect to upwards swing of bearing, the contact of travel switch (2) is touched, constant close contact is opened, the adhesive holding circuit of the valve control electromagnet of solenoid operated directional valve opens circuit, valve control electromagnet discharges, solenoid operated directional valve commutates once more, feed the height of two equilibrium liquid cylinder working liquid of hydraulic pump, the low-pressure state is conversion mutually once more, the displacement stator is under the promotion that feeds pressure working solution equilibrium liquid cylinder piston rod, axial line moves to opposite side once more by a side of rotor axis of rotation of living in, oil pumper restarts balance weight body rising accumulation of energy, the driving stroke that oil-well pump of oil well descends and resets, go round and begin again, keep continuous working in reciprocating mode; When breaking down, the balancing weight that balance weight body rises to wobble component touches the upper limit member, make oscillating structural member balancing weight one side direction lower swing touch the contact action of travel switch 3, but the drive of hydraulic transmission part does not change direction of rotation, balance weight body continues up, then oscillating structural member continues to lower swing, and then the contact action that touches travel switch (1), constant close contact is opened, disconnect driving force motor power supply relay electromagnetic actuation holding circuit, the motor stall, oil pumper quits work, equally, the balancing weight that drops to wobble component when the generation balance weight body touches the lower limit member, make the contact action that swing touches travel switch (2) on oscillating structural member balancing weight one side direction, but the drive of hydraulic transmission part does not change direction of rotation, balance weight body continues descending, then oscillating structural member continues relatively upwards swing, touch the contact action of travel switch (4), constant close contact is opened, and disconnects driving force motor power supply relay electromagnetic actuation holding circuit, the motor stall, oil pumper quits work, and realizes safeguard protection; By adjusting the latched position of upper limit member on column of driving stroke guiding mechanism, can change the working in reciprocating mode stroke of oil pumper; By adjusting the radially relative stop screw on the cylinder cap of two balance fluid cylinders of assembling of hydraulic pump respectively, change the reseting limit position of cylinder inner carrier, can change the discharge capacity of the working solution of hydraulic pump respectively in positive and negative two flow directions, and then change oil-well pump of oil well the reset operating rate of driving stroke of oil pumping and descending that rises respectively, promptly be the work jig frequency that changes oil pumper; Be assemblied in the throttling intensity of the choke valve on the pump end cap by adjustment, can change the conversion rate of oil pumper transfer process between ascending, descending working in reciprocating mode stroke.

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