CN208792977U - Autoamtic boosting balance can exert oneself often electric pumping unit - Google Patents

Abstract

Autoamtic boosting balance can exert oneself often electric pumping unit and be made of rack, bracket, walking beam, horse head, automatic power booster, autobalance, big tooth punching and shield, speed reducer, connecting rod, tune stroke structure, accident brake, balancing device, guide rail, well workover resigning device, safety bolt, brake gear, motor, electric controller, photovoltaic power generation apparatus.Automatic power booster and autobalance are arranged in walking beam rack, big tooth punching and shield, speed reducer, brake gear are arranged on bracket, well workover resigning device is arranged on walking beam horse head, connecting rod connects walking beam and big tooth punching spoke, accident brake matches on balancing device with guide rail, and safety bolt is arranged on guide rail.Electric controller driving motor drives speed reducer, connecting rod, walking beam to pump, and automatic power booster traction assisting block is driven to move back and forth, it adjusts jig frequency and balance is to be controlled by electric controller according to electrical parameter word, this pumping unit can significantly economize on electricity, drop cost and maintenance cost, using more convenient safe and reliable.

Description

Autoamtic boosting balance can exert oneself often electric pumping unit

Technical field

The present invention relates to the pumping units in the petroleum machinery of oil field, more particularly to have autoamtic boosting, autobalance and can not have to The often electricity pumping unit of photovoltaic electrical energy drive high energy saving environmental protection.

Background technique

Its advantage of fine strain of millet formula pumping unit: sturdy durable, no alternating load is swum in oil field at present, and suspension point loses the potential energy of balance weight after load Oneself disappearance is gradually discharged in crank rotation；But power of motor configuration is big, low load with strong power, low efficiency, energy consumption are high, steel are used Amount is big, not environmentally, adjust that ginseng trouble is inconvenient to use, maintenance cost is high, though nearlyr some problems are improved, are improved, but still nothing Method thoroughly solves, such as: not energy-efficient, steel consumption is big, balanced ratio bottom, steel cable, light rod-broken counterweight are adjusted ginseng, are repaired without safety guarantee The resigning of well horse head needs crane to assist, and barren hill desert region need to be grown away from distribution, many defects and deficiency such as at high cost.

Summary of the invention

In order to overcome many defects of existing beam-pumping unit and deficiency, the present invention provides a kind of helping automatically for symmetrical balance Dynamic balance can exert oneself often electric pumping unit, add automatic power booster, photovoltaic generating system, well workover are added in autobalance, short of electricity area Bit architecture, Dan Shuanlian rod structure, balancing device safety insurance structure, increase kinetic moment structure, intelligent electric-controlled device, bilayer is allowed to work Platform, speed reducer and big tooth punching and shield handling maintenance displacement structure.So that Pumping Unit it is simple and practical, using more Conveniently, maintenance cost is lower, quick, safe and reliable, durable, reaches efficient, energy-saving and environmental protection, low cost, carries out control number Change, intellectual management.

The present invention solves its technical solution: autoamtic boosting balance can exert oneself often electric pumping unit, by rack, bracket, chassis, trip Beam, horse head, automatic power booster, autobalance, big tooth punching and shield, connecting rod, adjust stroke structure, emergency braking at speed reducer Device, balancing device, guide rail, well workover resigning device, safety bolt, brake gear, rotation axis platform, roller bearing, workbench, motor, Electric controller, photovoltaic power generation apparatus are constituted.Automatic power booster and autobalance are all disposed on walking beam and rack；Big tooth punching and anti- Shield toothed section two sides be equipped with corresponding maze trough coaxially match, and be respectively equipped in shield lower recess drainage hole and Oil return hole, and speed reducer is connected on bracket；Well workover horse head resigning device is arranged on walking beam and horse head, connecting shaft fastening Head beam is wound on the steel cable connection horse head both ends on reel；Connecting rod connects walking beam and big tooth punching spoke, and is provided on spoke Adjust stroke structure；Accident brake is mounted on balancing device and matching all corresponding with guide rail；Guide rail connects pedestal and workbench； Safety bolt is arranged at the rear horse head top dead centre of guide rail；Brake gear corresponds to the brake structure on belt pulley on bracket； Axis platform is rotated in the rack above big tooth punching；Roller bearing is on the bracket of deceleration motor spindle；Electric controller is automatic by power Control system, automatic power booster control system, automatic balance control system are constituted；Photovoltaic power generation apparatus connects motor and automatically controlled Device.Electric controller driving motor simultaneously drives the oil well pump of speed reducer, connecting rod, walking beam, steel cable connection on horse head up and down reciprocatingly to transport It is dynamic to realize oil pumping, while driving automatic power booster and drawing assisting block and move back and forth power-assisted in walking beam；When the electricity that moves up and down When flowing the super specified value of difference, electric controller starts spacing automatically and adjusts balance weight position；It needs to adjust stroke then mobile on spoke Bearing block position；Well workover resigning is at rear horse head in top dead centre, and by safety bolt stable equilibrium device, it is negative that well head unloads extension Lotus, brake-shoe simultaneously carry out dual fail-safe on guide rail, then unload two and stay one by locked balancing device under the action of the spring Connecting shaft, rotating drum draw horse head and carry out potential difference resigning；It adjusts jig frequency and balancing is to be digitized by electric controller according to encoder Control, electric controller networking oil field central control room, carries out long-range control.

Pedestal, horse head connection walking beam, walking beam is connected with bracket by rack to connect rack, speed reducer with workbench and open greatly Tooth and shield connecting bracket, connecting rod connect walking beam with big tooth punching, guide rail connect pedestal and workbench combined by whole frame Frame structure is symmetrical balance and has a kind of framework of the height steadily with balance.

Automatic power booster is to run to walking beam one end from walking beam center by assisting block, is reruned back and forth in this way, i.e., automatically For the crank of booster when horse head is in top dead centre and rotates to lower dead center, the blocking for the push shaft that is obstructed restricts lower necessary rotation, and band Moving gear, rolling wheel, pulley rotation, on rolling wheel around steel cable assisting block is drawn to walking beam one end among walking beam, otherwise work as Horse head rotates to lower dead center and rotates again toward top dead centre, and crank must revolve round about in the case where the blocking of another resistance push shaft restricts Turn, assisting block is then drawn among walking beam by steel cable from walking beam one end, is constantly reruned in this way, when horse head only being needed to run up and down Between 20%, therefore the few power consumption of horse head major part runing time, or even not power consumption reaches high energy saving.Embodiment 2 is bent Handle, resistance push shaft, spring remove, and change motor, pulley and limiter into, and motor may be provided on walking beam or in assisting block, limit Device is arranged on the rack in walking beam, other are identical with facility example 1, such as Fig. 2.

Autobalance is to be adjusted from balance weight setting in preceding walking beam middle section to walking beam center and the displacement of walking beam one end spacing Balance, i.e., when horse head moves up and down, current difference is more than program numbers, electric controller starts the adjustment of motor encoder spacing automatically Balance weight is shifted to direction initialization.

Big tooth punching and shield are to revolutionize traditional power transmission arrangment, and big tooth punching spoke is instead of common beam The crank of machine, it is power at the diameter of big tooth punching gear compound graduation garden that it is load point at the tune stroke structure on spoke that bearing block, which connects, Point, power spot diameter are greater than load spot diameter, i.e. kinetic moment is bigger, so very laborsaving；Sleet dust storm is to big tooth punching in order to prevent Erosion, toothed section two sides are provided with labyrinth tongue and groove (Fig. 3), and shield divides two halves and bottom to be provided with drainage hole and oil return Hole, big tooth punching coaxial matching corresponding with shield, and speed reducer is connected on bracket.

Connecting rod is the power-transmitting part for connecting big tooth punching spoke and walking beam, in the rotation of walking beam horse head without impinging on connecting rod, So connecting rod is set as one end double rod one end single pole, both ends connect bearing block, and have well solved beam machine double link knot Structure generates price scissors problem, power concentration and material saving.

Adjusting stroke structure is to adjust a kind of structure of pumping unit up-down stroke length, is at big tooth punching spoke dress bearing block Multiple groups screw hole is designed, one people's rotating pulley when adjusting stroke, bearing block sliding transfer to another group of screw hole, light safe ready, It is not required to be assisted with crane, it is not only quick but also greatly save expense.

The accident brake of balancing device is to prevent steel cable rod parting, a kind of safety dress of counterweight moment tenesmus It sets, the crankshaft base of crankshaft two end connects counterweight, up connects steel cable among crankshaft, and connecting spring, spring connect counterweight down, when Crankshaft two end linkage brake-shoe clamps guide rail immediately under the action of the spring for steel cable or rod parting.

The counterweight of balancing device is the device that horse head steel cable and preceding horse head suspending point loading balance each other after connection, counterweight be by than Great substance is cast into large, medium and small piece of composition, and bulk two sides are vertically disposed with that pulley is corresponding with guide rail to match, in, fritter be Used in convenient working balancing.When oil well operation, which need to unload, hangs load, lower dead center at preceding horse head, top dead centre at rear horse head, in place The safety bolt of stop fastens balancing device, while unloading beam rating before extension.Brake-shoe clamps guide rail implementation under the action of the spring Dual fail-safe.

Well workover resigning device is the constructional device for conceding space to workover rig for shaft mouth operation, and rear horse head rotates to top dead centre When, safety bolt fastens balancing device, and hanging point load is unloaded in lower dead center at preceding horse head, makes under the spring effect of accident brake Dynamic hoof clamps guide rail, and release connecting shaft unloads two and stays one, and rotating drum draws horse head and carries out potential difference resigning, is not required to crane association It helps, people is fool proof in workbench operation, greatlys save operating cost.

Ensure to ensure when safety operation and operation operating personnel's safety when brake gear is a kind of operation, it is by screw rod spiral shell Two kinds of structures of parent structure or brake shoe, all corresponding with belt pulley to be mutually fitted on bracket, rotary screw rod ties down skin when needing to stop Belt wheel or energization brake shoe clamp belt pulley, and brake force and cost are 3 times and 1/3 of common beam machine, not only durable but also reduction Cost.

Rotating axis platform and roller bearing is a kind of promotion shift unit, when big tooth punching and shield and speed reducer need to load and unload displacement, By portable hoist engine in rotation axis platform, rotation displacement is sling, deceleration motor spindle cushion block unloads to fall on roller bearing can be light Pine displacement.

Electric controller is by power automatic control system, automatic power booster limiter control system, and autobalance encoder is certainly The highly integrated automatic control program control system of the electrical parameters such as autocontrol system, electric current, voltage, encoder is simultaneously controlled with oil field Center cluster is carried out digital intelligent and is remotely controlled.Power control system be pumping unit up and down run in suspending point loading all continuous Variation, power control system change with load variations, and much how many electricity of load consumption do not flog a dead horse, such dynamic Control System drive motor drives oil well pump to move again and again up and down, and continuously crude oil is drawn on ground from underground Come.Automatic power booster position limitator is reciprocal in walking beam at walking beam initial stage that moves up and down by limiter control assisting block Mobile power-assisted, i.e., top dead centre position limitator starting motor traction assisting block is quickly moved from centre to horse head top dead centre at horse head Position, on the contrary horse head at lower dead center position limitator starting motor traction assisting block from lower dead center rapid traverse to walking beam among, move The position time only needs the 20% of horse head or more runing time.Automatic-balancing system is when pumping unit up and down motion current difference is more than regulation When digital value, automatic balance control system encoder starts spacing shifting balance block automatically, i.e., under preceding horse head ascending current is greater than Row current specification digital value, automatic balance control system encoder start balance weight spacing to intermediate bit, preceding donkey on the contrary automatically Head ascending current is less than centrifugal current and provides digital value, and automatic balance control system encoder starts balance weight spacing to trip automatically The displacement of beam outer end.

Photovoltaic power generation apparatus is the electrical source of power device configured in outlying desert power-shortage area without normal power supplies, because outlying Desert power-shortage area configuration conventional electric power cost is too high, and common beam machine power consumption is big, and autoamtic boosting balance can exert oneself often electricity and take out Oil machine power consumption is only the 20%-30% of common beam machine, and routinely beam machine power consumption is converted, and time recoverable cost in 6 years is modern 14 years are then extremely low afterwards or micro- cost is recovered the oil.

The present invention from energy-saving and emission-reduction, cost, steel consumption, service life, maintenance cost, operation safety is convenient, recover the oil at This grade has obvious very big advantage, first is that almost absolutely being balanced using the balanced ratio of symmetrical balanced structure.Two It is power control system is how much electric much load consumptions are, unloaded not power consumption.Third is that automatic power booster shortens whole course load movement Time, that is, shortened for 80% power consumption time.Surpass fourth is that autobalance measures uneven digital value by control system dynamic Difference, the automatic encoder spacing that starts adjust balance weight.Fifth is that big tooth punching and shield change conventional power transmission structure, power Away from being all walking beam types more than 2 times, so power of motor configuration is only with the 1/3 to 1/2 of all beam machines of similar size, ten Merogenesis energy.Sixth is that single double link design solves double link and generates price scissors persistent ailment.Seventh is that stroke structure is adjusted to solve tune stroke When need to use crane assist high cost problem, convenient and safe, time saving province's expense.Eighth is that accident brake in the counterweight all with guide rail It is corresponding to match, not only prevent blowing hard that counterweight is caused to rock, but also can ensure man-machine safety when bar rope is disconnected de-.The dress ninth is that well workover is stepped down It sets and is operated on workbench by a people, two connecting shafts are unloaded in lower dead center at preceding horse head, and rotating drum draws horse head and carries out position Difference is stepped down, not only safe but also quick, is not required to crane assistance, time saving and energy saving province's expense.Tenth is that brake device structure is simple and practical durable, Brake force is 3 times of same type, and cost is the 30% of conventional machine, can accomplish any time point braking, dead brake, it is ensured that safety.11 It is that electric controller speed regulation, electrical parameter word, number implement intelligently adjust control stacking system, networks with oil field control centre, it is long-range to control, Oilfield intelligent digital management can be achieved.Ten second is that photovoltaic power generation apparatus, few in outlying block of cells well head quantity, sets up power Power supply cost is too high, is even more short of electricity area in foreign countries, mixing photovoltaic power generation apparatus is short, adaptable and fast ideal chose.The above, from Model machine test-run a machine obtains data, and manufacturing enterprise can save 60% steel, reduces by 25% cost, and Oil-production Enterprises can economize on electricity, follow-up maintenance Expense all reduces by 70%, and operation is more convenient, safe and reliable durable.

Detailed description of the invention:

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is 2 automatic power booster structural schematic diagram of the embodiment of the present invention.

Fig. 3 is big tooth punching and shield maze trough schematic diagram of the invention

Fig. 4 is balance device structure schematic diagram of the invention.

In figure: pedestal 1, rack 2, bracket 3, walking beam 4, horse head 5, connecting rod 6, big tooth punching 7, shield 8, adjust stroke structure 9, Speed reducer 10, belt pulley 11, motor 12, electric controller 13, counterweight 14, skidding 15, crankshaft base 16, brake-shoe 17, spring 18, crankshaft 19, guide rail 20, steel cable 21, workbench 22, photovoltaic power generation apparatus 23, crank 24, resistance push shaft 25, gear 26, pulley 27, power-assisted Block 28, steel cable 29, guide rail 30, idler wheel 31, spring 32, motor 33, reel 34, reel 35, steel cable 36, connecting shaft 37, cushion block 38, Roller bearing 39, limiter 40, rotation axis platform 41, safety bolt 42, brake gear 43, rack gear 44, balance weight 45, motor 46, idler wheel 47, encoder 48, oily control lever 49.

Specific embodiment

In figure: rack 2, bracket 3, guide rail 20, motor 12 are attached separately on pedestal 1, and big tooth punching 7 is connect with shield 8 to be subtracted On bracket 3, two horse heads 5 connect 4 both ends of walking beam and mounted in 2 tops of rack fast machine 10；Automatic power booster by assisting block 28, Crank 24, rack gear 44, steel cable 29, pulley 27, idler wheel 31, reel 34, spring 32, is arranged in walking beam 4, size tooth gear 26 Wheel 26 intermeshes, pinion gear 26 and reel 34 are coaxial, gear wheel 26 and crank 24 are coaxial, is all disposed among walking beam 4, helps Power block 28 connect matching with guide rail 30, and pulley 27 is arranged in 4 one end of walking beam, and steel cable 29 is around reel 34 and pulley 27, steel cable 29 both ends are separately connected 28 rear and front end of assisting block, and resistance push shaft 25, limiter 40 are arranged in rack 2, hinder push shaft 25 and crank 24 be arranged in by walking beam rotate centered on same motion profile on it is corresponding match, two resistance push shafts 25 of the connection of spring 32, when horse head 5 When locating top dead centre and being rotated to lower dead center, crank 24 be obstructed push shaft 25 blocking restrict it is lower must rotation, and with moving gear 26, rolling wheel 34, pulley 27 rotate, rolling wheel 34 around steel cable 29 assisting block 28 is drawn to walking beam one end among walking beam, otherwise work as donkey Head rotates to lower dead center and rotates again toward top dead centre, and crank 24 must revolve round about in the case where the blocking of another resistance push shaft 25 restricts Turn, assisting block is then drawn among walking beam by steel cable 29 from walking beam one end, is constantly reruned in this way.Embodiment 2 removes crank 24, push shaft 25, spring 32 are hindered, the increase setting of motor 33 is on walking beam 4 or in assisting block 28, limiter 40 fills on the rack, It is identical with embodiment 1, i.e., when horse head 5 rotates to lower dead center, limiter 40 starts motor 33 and draws assisting block 28 in Between, otherwise when horse head 5 rotates to top dead centre, another limiter 40 starts motor 33 and draws assisting block 28 to walking beam one end, in this way It moves in cycles.Autobalance is made of balance weight 45, motor 46, encoder 48 to be arranged in walking beam 4, by electric controller 13 Control system dynamic to measure uneven digital value overproof, it is automatic to start 48 spacing of encoder displacement adjustment balance weight 45.Well workover The resigning of horse head 5 is made of connecting shaft 37, reel 35, steel cable 36, and connecting shaft 37 fastens horse head 5 and walking beam 4, before reel 35 is mounted in Among walking beam, the steel cable 36 being wound on reel 35 connects 5 both ends of horse head, and when needing workover treatment, lower dead center at preceding horse head unloads two Root connecting shaft 37, rotating drum 35 draw horse head and carry out potential difference resigning.The structure of connecting rod 6 is by one end double rod one end single pole and company Joint bearing seat, double rod one end are ined succession walking beam 4, and single pole one end is ined succession at big 7 spoke tune stroke structure 9 of tooth punching, will when need to adjust stroke Bearing block is displaced another group of screw hole.Accident brake is safety locking motion, by crankshaft 19, crankshaft base 16, brake-shoe 17, spring 18 are constituted, and by crankshaft base 16 in counterweight 14, and steel cable 21 is connected among crankshaft 19, and spring 18 connects crankshaft 19 and counterweight 14,19 both ends brake-shoe 17 of crankshaft is corresponding with guide rail 20 to match, when steel cable 21 or sucker rod 49 are disconnected de-, in the effect of spring 18 Under, 17 moment of brake-shoe clamps guide rail 20.Counterweight 14 be by heavy substance barite, iron ore, sandstone, cement casting at Large, medium and small piece, bulk outer rim is provided with that pulley 15 is corresponding with guide rail 20 to match, in, fritter is for convenience of well workover and adjustment. Safety bolt 42 is arranged on 20 position of guide rail when balancing top dead centre at dress, and matching corresponding with the screw hole on crankshaft base 16. Workbench 22 is arranged in 2 two sides of rack, and connects guide rail 20.Brake gear 43 is by feed screw nut's structure or brake shoe knot Structure, it is corresponding with the brake structure on belt pulley 11 on bracket 3 to match.Axis platform 41 is rotated mounted in the rack 2 of big 7 top of tooth punching On, hoist engine facilitates big tooth punching 7, protection to set the handling displacement of 8, speed reducer 10, roller bearing 39, cushion block 38 in rotation axis platform 41 On the bracket 3 of 10 bottom of speed reducer, convenient for the maintenance handling displacement of speed reducer 10.Power control system is by motor 12 and electricity Control 13 two parts of device composition, motor can be used switched reluctance machines or magneto, electric controller be by power automatic control system, The electrical parameters such as automatic power booster limit control system, autobalance encoder automatic control system, electric current, voltage, encoder are high The control system of the integrated automatic adjustment journey system of degree, and remotely controlled with oil field control centre networking, implementation digital intelligent.Short of electricity Area can configure photovoltaic power generation apparatus 23 and make driving electric energy, and structure is by solar panel or cadmium telluride glass power generation plate, inverse Become device, battery, controller to constitute, and connect electric controller.

Claims (10)

1. a kind of autoamtic boosting balance can exert oneself often electric pumping unit, including rack, bracket, pedestal, walking beam, horse head, automatic power booster, Autobalance, big tooth punching and shield, connecting rod, adjust stroke structure, accident brake, balancing device, guide rail, repair speed reducer Well resigning device, safety bolt, brake gear, rotation axis platform, roller bearing, workbench, motor, electric controller, photovoltaic power generation apparatus It constitutes；It is characterized in that automatic power booster and autobalance are all disposed on walking beam and rack；Big tooth punching and shield tooth form Position two sides are equipped with corresponding maze trough and coaxially match, and are respectively equipped with drainage hole and oil return hole in shield lower recess, And speed reducer is connected on bracket；Well workover horse head resigning device be arranged on walking beam and horse head, connecting shaft fasten horse head and Walking beam is wound on the steel cable connection horse head both ends on reel；Connecting rod connects walking beam and big tooth punching spoke, and tune punching is provided on spoke Journey structure；Accident brake matches on balancing device and all with guide rail；Guide rail connects pedestal and workbench；Safety bolt It is arranged at the rear horse head top dead centre of guide rail；Brake gear corresponds to the brake structure on belt pulley on bracket；Rotate axis platform In the rack above big tooth punching；Roller bearing is on the bracket of deceleration motor spindle；Photovoltaic power generation apparatus connects motor and automatically controlled Device；It adjusts jig frequency and balance is to be controlled by electric controller according to electrical parameter word；Electric controller driving motor simultaneously drives speed reducer, connecting rod, trip The oil well pump of steel cable connection on beam, horse head, which pumps, realizes oil pumping, while driving automatic power booster and drawing and help Reason block moves back and forth power-assisted in walking beam；When the super specified value of up and down motion current differential, it is flat that electric controller starts adjustment automatically Weighing apparatus block position reaches balance；It needs to adjust stroke then screwhole position of the moving shaft holder on spoke；Well workover resigning is in rear horse head When locating top dead centre, by safety bolt stable equilibrium device, well head unloads extension load, and brake shoe is locked simultaneously under the action of the spring balances Device carries out dual fail-safe, then unloads two and stays a connecting shaft, rotating drum draws preceding horse head and carries out potential difference resigning.

2. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: autoamtic boosting device assembly is It is made of assisting block, crank, gear, rack gear, steel cable, pulley, idler wheel, reel, resistance push shaft, spring, limiter, motor, respectively Setting is inside and outside walking beam and in rack, and crank is corresponding with resistance push shaft to match, and spring connects two resistance push shafts；Or its structure is bent Handle, resistance push shaft, spring remove, and change motor, pulley and limiter into, and motor may be provided on walking beam or in assisting block, limit Device be arranged on the rack in walking beam.

3. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: well workover horse head resigning device It is to be made of connecting shaft, reel, steel cable, the fixed walking beam of connecting shaft and horse head, reel are wound on reel on the walking beam of well head side On steel cable both ends connect horse head both ends.

4. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: link mechanism is by connecting rod Both ends are equipped with bearing block, and bearing block is separately connected at walking beam and big tooth punching wheel spoke tune stroke structure, and connection walking beam one end is Double link is not touched convenient for horse head rotation, and connecting big tooth punching wheel spoke one end is single connecting rod.

5. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: balancing device is by counterweight It is constituted with accident brake two parts in counterweight；Counterweight is to be cast into large, medium and small piece by heavy substance, bulk Outer rim equipped with pulley matching corresponding with guide rail, in, fritter is convenient for well workover and adjustment；Accident brake is by crankshaft, crankshaft Seat, spring, brake-shoe are constituted, and crankshaft base is in counterweight, and brake-shoe is corresponding with guide rail on crankshaft base to match, spring connection Crankshaft and counterweight.

6. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: autobalance is by electricity Machine, gear, rack gear, belt pulley, balance weight, guide rail composition are incorporated into walking beam, by electric controller according to up and down motion current differential Digital automatic starting motor band dynamic balance weight is shifted to required direction spacing.

7. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: the safety bolt of well workover Be arranged at balancing device on the guide rail of top dead centre, when well workover safety bolt stable equilibrium device on the guide rail of top dead centre, Then suspending point loading is moved on on well head, the brake-shoe of accident brake under the action of the spring automatically locks balancing device at this time Extremely on guide rail, dual fail-safe is carried out.

8. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: rotation axis platform and roller bearing point With portable hoist engine in rotation axis platform, shifting Zhuan not be sling in rack and bracket, when big tooth punching and shield load and unload Position；When speed reducer handling displacement, deceleration motor spindle cushion block is unloaded, speed reducer is fallen on roller bearing, easily moves speed reducer；All it is not required to Crane is assisted.

9. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: electric controller be by power from Autocontrol system, automatic power booster control system, automatic balance control system are constituted, and are networked with oil field control centre, are carried out Digital intelligent remotely controls.

10. autoamtic boosting balance can exert oneself often electric pumping unit according to claim 1, it is characterised in that: on short of electricity area or side The remote configurable photovoltaic power generation apparatus in area, structure includes: solar panel or hoof cadmium glass power generation plate, inverter, storage Battery, controller constitute, and connect motor and electric controller, can operate as usual more days rainy days.