CN205172527U - Long stroke directly drives beam -pumping unit with function of falling is prevented to dual braking and counter weight - Google Patents

Long stroke directly drives beam -pumping unit with function of falling is prevented to dual braking and counter weight Download PDF

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Publication number
CN205172527U
CN205172527U CN201520814639.3U CN201520814639U CN205172527U CN 205172527 U CN205172527 U CN 205172527U CN 201520814639 U CN201520814639 U CN 201520814639U CN 205172527 U CN205172527 U CN 205172527U
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CN
China
Prior art keywords
brake
frame
reel
pumping unit
ballast box
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Withdrawn - After Issue
Application number
CN201520814639.3U
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Chinese (zh)
Inventor
朱新忠
林传宏
朱恒
夏承宇
潜凌
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Shengli Oil Field Highland Petroleum Equipment Co Ltd
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Shengli Oil Field Highland Petroleum Equipment Co Ltd
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Priority to CN201520814639.3U priority Critical patent/CN205172527U/en
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Abstract

The utility model discloses a long stroke directly drives beam -pumping unit with function of falling is prevented to dual braking and counter weight, power device's motor drive installs the built -in reduction gear in the reel, drives the positive antiport of reel, has the dual brake function of motor braking and electric liquid stopper braking. Winding well head belt is fixed to the reel, but walks around the direction reel of back -and -forth movement and connect the well head polished rod, the weight box that falls of preventing in the frame is connected to reel fixed winding counter weight belt in the other direction, well head polished rod load forms a day flat balance with the counter weight. The utility model discloses a beam -pumping unit has characteristics such as the type of belt drive is simple, safe and reliable.

Description

A kind of long stroke direct drive pumping unit with double brake and counterweight anti-falling function
Technical field
The present invention relates to oil field equipment field, specifically a kind of long stroke direct drive pumping unit with double brake and counterweight anti-falling function.
Background technology
Along with the growth of oil field development time, strata pressure reduces gradually, the artificial lift dominate based on beam pumping unit.Motor is slowed down by secondary reducer with hardened tooth surface, and driving crank linkage completes up-down stroke work.Be limited to the reasons such as drive path is long, crank-link mechanism efficiency is low, the big energy-consuming of beam pumping unit, volume is larger.
In recent years, engineers and technicians developed dissimilar tower-type pumping unit." outer-rotor permanent magnet motor cluster well oil extractor " (publication number CN202707001U), " tower-type pumping unit motor and tower-type pumping unit thereof " (publication number CN101719702) " ultra-low speed big torsional moment abnormity motor dragging and tower type high-efficiency low-consumption intelligent pumping unit " (publication number CN1840904B) all need to adopt special motor, there is the deficiencies such as standard fitting is few, cost is high, repair and replacement are difficult; " a kind of tower digital sucker " (publication number CN2511789Y) adopts normal asynchronous form with movable reel after reducer with hardened tooth surface slows down, top structure size and weight large.Meanwhile, above-mentioned oil pumper does not have auxiliary brake mechanism and counterweight anti-falling mechanism, and safety is poor.
Summary of the invention
For the deficiency of existing tower-type pumping unit, the present invention proposes a kind of novel long stroke direct drive pumping unit with double brake and counterweight anti-falling function.
Operating principle of the present invention: long stroke direct drive pumping unit of the present invention adopts tower structure, the motor forward/backward rotation on top drives parent roll.The well head belt be fixedly wrapped on parent roll connects polished rod, and the counterweight belt be fixedly wrapped in the other direction on parent roll connects counterweight, is balance-type type balance between PRL and counterweight.The run location signal of the travel switch test counterweight of frame top and bottom, control system controls the rotating of motor according to position signalling, realizes the conversion of up-down stroke.Take the double brake mode of electric machine built-in braking and electro-hydraulic brake, improve the validity of braking.Meanwhile, ballast box has anti-falling mechanism, prevents disconnected the taking off of belt from causing counterweight freely falling body.
Technical scheme of the present invention is as follows:
Comprise base and the vertical frame arranged on it, power set are installed on the top of described frame, the ballast box that can move back and forth up and down along it is installed in the inside of described frame, described power set comprise driving mechanism and drive by it reel rotated, on described reel, positive direction is fixing is wound around well head belt, in the other direction fixing winding counterweight belt, and the lower end of described counterweight belt connects ballast box; Described power set are provided with check mechanism;
Described ballast box is fall arrest ballast box, it load-bearing pull bar comprising casing and run through casing from top to bottom, and the upper end of described load-bearing pull bar is connected with counterweight belt, the left and right sides of lower end symmetry is installed tooth bar or is processed as rack structure; Described casing internal fixtion spring strut, described load-bearing pull bar interlude processes a boss, is provided with holddown spring and holddown spring is sleeved in the middle part of load-bearing pull bar in described spring strut, the lower end of described holddown spring and described boss against, upper end and spring strut against; The bottom symmetrical of described casing installs two parallel-crank mechanisms, each parallel-crank mechanism comprise drive, fork, pull bar and ear seat; Wherein said ear seat comprises the inside and outside ear seat being fixed on bottom half side by side, and the two forms the upper horizontal sides of parallel-crank mechanism; Described drive comprise with center rotating hole gear parts and be positioned at the swing hole of its neighboring, described drive by center rotating hole and described inner ear seat hinged and form a hypotenuse of parallel-crank mechanism, the upper end of described fork and external ear seat hinged and form another hypotenuse of row quadrangular mechanism; The two ends of described pull bar are connected with the lower end of fork, the swing hole of drive respectively and form the lower horizontal sides of parallel-crank mechanism;
The bilateral symmetry of described casing installs brake component, and described brake component comprises the brake block with centre bore and neighboring exit orifice, and the side of described centre bore and casing is hinged, and the outer end of described exit orifice and described pull bar is hinged; Described brake block is provided with the brake area corresponding with the inner surface of described frame, and when described brake area contacts with frame inner surface, the two can form frictional fit;
Described load-bearing pull bar lower end by the tooth bar of both sides respectively with two parallelogram inside drive realize engagement fit; By tooth bar vertically movement be converted to the transverse shifting of connecting rod.
The reducer that described driving mechanism comprises motor and is in transmission connection with it, described check mechanism comprises the built-in brake of motor and the electro-hydraulic brake device for spool shaft braking.Such as selection of Motor is with the frequency-conversion and speed-regulation motor of inner brake, and it is industrial general product, as lifting variable-frequency motor etc.; When power cut-off, built-in brake is braked in time.Motor main technique requirements meets the requirement of GB755 standard, is the product of industrial general.Described electro-hydraulic brake device and the brake disc be mated, braked wheel are general industrial products, and electro-hydraulic brake device is a kind of parts that electric energy directly can be converted to unidirectional thrust, can select relevant model in " mechanical design handbook ".
Such scheme is more preferably:
Preferably, described reducer is the built-in reducer being arranged at reel inside, coaxially, the power shaft of wherein said motor is connected with the input of built-in reducer, and the output of described built-in reducer is connected with reel for the input of described built-in reducer and output.
Preferably, inner flange, gripper shoe are fixed vertically successively in described reel inside, described built-in reducer comprises input housing and the output housing in relative rotation of geo-stationary, install power shaft in described input housing, and described power shaft one end is in transmission connection, motor output shaft, the other end are in transmission connection described output housing; Described input housing is fixed with motor adpting flange, support adpting flange outward successively, and described input housing is connected by motor adpting flange and electric machine casing flange, be connected by support adpting flange and the flange bracket being fixed on frame top; Described output housing extenal fixation coupling flange, output end, and described output housing is connected by the inner flange flange of coupling flange, output end and described reel inside; Dead block axle in described gripper shoe, the other end of described spool shaft is extended laterally and is arranged on the bearing support of frame top by bearing.
Preferably, described brake component is special-shaped brake component, and its profile is take centre bore as the part circular in the center of circle and the involute in form of part off-centre operation composition; The brake area of described brake component is processed with continuous print groove.
Preferably, described frame medial center is arranged symmetrically with guide pipe, and for the guiding in the upper and lower running of ballast box in frame, the side of described ballast box casing is provided with multiple directive wheel.For reducing ballast box directive wheel to the horizontal pressure force of leading truck, the tangent to periphery after guiding reel is wound around belt aligns with the center line of guide pipe.
Preferably, described power set are all fixed on power set base plate, and described power set base plate is connected with the top board of frame by bolt; Described power set base plate is " Qian " shape, and the top board of described frame is " mouth " shape, is fitting operation slot milling.Namely, when " Qian " shape power set base plate is installed to " mouth " shape frame top board, the position that operating personnel may stand in frame bottom plate corresponding operates.
Preferably, described reel comprise before and after the guiding reel that is arranged in juxtaposition and parent roll; One end of described well head belt is fixedly wrapped on parent roll, connects well head polished rod eye after then walking around guiding reel.Namely because in upstroke process, the number of plies of well head belt wrap increases gradually, and the circle diameter of belt outer rim becomes large gradually, and the tangent line along cylindrical vertical direction departs from wellhead polish rod position gradually.For making well head belt aim at well head all the time, outside parent roll, guiding reel is installed side by side.
Preferably, built-in reducer output and tubular shell are integrated, and such as can be chosen as planetary reducer, planet-cycloid reducer etc.; Further preferably, described reducer is planetary reducer, and the sun gear of described planetary reducer is sleeved on described power shaft, and described output enclosure interior is provided with ring gear and is in transmission connection by planetary gear and described sun gear.
Preferably, described inner flange and gripper shoe process heat elimination hole respectively, outside described gripper shoe, be provided with multiple gusset vertically in oblique layout.
Preferably, described fall arrest ballast box bottom connects common ballast box, and described fall arrest ballast box and common ballast box are all contained with balancing weight.
Preferably, described base is made up of hinged front base and rear base, described frame is fixed on front base, described frame side is respectively equipped with ladder and move into for the balancing weight in frame and shift out can the door of switch, ladder is as the lower channel of power set installation and maintenance; Because the center of gravity of power set is comparatively forward, the diagonal brace that therefore installation length is adjustable between frame and rear base, for straining frame, strengthening the rigidity of frame and preventing from occurring in oil pumping process toppling.
Braking procedure of the present invention is as follows:
When oil pumper normally works, the brake block of the electro-hydraulic brake device of the brake in motor and spool shaft opens, and keeps gap, do not produce braking action with brake disc or braked wheel.
Artificial shutdown.When carrying out oil pumper debugging maintenance, workover treatment etc., need safe shutdown, and to ensure that between down period polished rod, weights rest are motionless.Under debugging mode, when turning off electrical source of power, the brake in motor closes automatically, clamping motor tailing axle brake disc.Meanwhile, the electro-hydraulic brake device at drum shaft place closes, and two brakes at oil pumper top are braked simultaneously, to improve the ageing of braking.
Power-off is shut down.When power supply network breaks down power-off, operating oil pumper can stop suddenly, and staff cannot operate brake switch in time.Now, the brake in motor can produce braking action in time.Meanwhile, the electro-hydraulic brake device in spool shaft closes automatically, to brake disc or the braked wheel generation effect of tail end.Under electro-hydraulic brake device double brake effect on motor inner brake and spool shaft, polished rod and balancing weight stop motion.
Fall arrest process of the present invention is as follows:
When oil pumper normally works, ballast box is connected with counterweight belt by load-bearing pull bar, and spring is in compressive state, keeps certain interval between brake block and frame.
Counterweight belt disconnects.When counterweight belt fracture, bearing pin comes off or fastening place gets loose, and under spring force effect, load-bearing pull bar moves down.The tooth bar moved down promotes drive and rotates, and drivening rod is outer in the horizontal direction to be moved.The connecting rod moved outward promotes special-shaped brake component and rotates around center of rotation, and special-shaped brake component is pressed in frame, starts to produce friction brake force, and the gliding speed of ballast box starts to slow down.In ballast box downslide process, due to special-shaped brake component eccentric outer rim and frame friction, special-shaped brake component continues to rotate around center of rotation, and brake block edge moves outside level, and brake force increases gradually, and ballast box gliding speed slows down gradually, until ballast box stops gliding.Avoid ballast box to produce the movement of falling object, injure front base and the concrete pedestal of frame by a crashing object.
The operating principle of abnormity brake component action is, two pitch-rows of drive, fork, special-shaped brake component are equal, the parallelogram in parallel with forming two between pull bar, casing ear seat, according to the characteristic of parallelogram, when a hypotenuse gradient changes, there is same change in the gradient of another hypotenuse, keeps four limits parallel between two.Therefore, when the hypotenuse at drive place swings certain angle, the hypotenuse at fork place and the hypotenuse at special-shaped brake component place swing corresponding angle equally.
When needs counterweight belt is repaired, above carry load-bearing pull bar, the spring pressurized on load-bearing pull bar shortens, and load-bearing pull bar moves relative on ballast box.On the rack drives drive that moves rotate backward, drivening rod in the horizontal direction in move.The connecting rod of inside translation pulls special-shaped brake component around center of rotation counter-rotation, and special-shaped brake component departs from frame gradually, and brake force is removed.
Fall in braking procedure in the operation of oil pumper and counterweight, the directive wheel of ballast box is along the upper and lower even running of frame guide pipe.In fall arrest process, because four brake block are arranged symmetrically with, the ballast box rollover that there will not be the brake force difference of casing both sides to cause too greatly.
The present invention takes the double brake mode of electric machine built-in braking and electro-hydraulic brake, improves the validity of braking; Meanwhile, ballast box has anti-falling mechanism, prevents disconnected the taking off of belt from causing counterweight freely falling body; There is the advantages such as drive path is short, operating efficiency is high, safety is good.
Accompanying drawing explanation
The structural representation of Fig. 1 an embodiment of the present invention;
The structural representation of Fig. 2 frame;
The structural representation of Fig. 3 ballast box;
Fig. 4 fall arrest ballast box structural representation;
The appearance schematic diagram of the drive of Fig. 5-7 three kinds of shapes;
The structural representation of Fig. 8 abnormity brake component;
The operating principle schematic diagram of Fig. 9 fall arrest ballast box;
The structural representation of Figure 10 power set;
The appearance schematic diagram of the built-in reducer of Figure 11;
The structural representation of Figure 12 parent roll;
The appearance schematic diagram of Figure 13 power set base plate;
The appearance schematic diagram of Figure 14 frame top board;
The control system flow chart of Figure 15 long stroke direct drive pumping unit
In figure: rear base 1; Frame 2, front base 21, girder 22, lower engaging lug seat 23, iron gate 24, guide pipe 25, ladder 26, upper engaging lug seat 27, frame top board 28; Ballast box 3, junction plate 301, directive wheel 302, casing 303, load-bearing pull bar 304, spring strut 305, holddown spring 306, brake block 307, stock 308, ear seat 309, tooth bar 310, drive 311, swing hole 3111, center rotating hole 3112, pull bar 312, fork 313, ear seat 314; Counterweight belt 4; Well head belt 5; Power set 6, power set base plate 61, electro-hydraulic brake device 62, brake disc 63, parent roll 64, inner flange 641, built-in reducer 642, input shaft bore 6421, motor flange adpting flange 6422, support adpting flange 6423, coupling flange, output end 6424, gripper shoe 643, gusset 644, spool shaft 645, outer baffle 646, cylindrical shell 647, motor 65, support 66, guiding reel 67, bearing support 68; Guardrail 7; Diagonal brace 8.
Detailed description of the invention
Now the present invention is further illustrated by reference to the accompanying drawings.
Composition graphs 1 is long stroke direct drive pumping unit provided by the invention.It comprises the parts such as rear base 1, frame 2, ballast box 3, counterweight belt 4, well head belt 5, power set 6, guardrail 7, diagonal brace 8, switch board.
The well head belt 5 of the long stroke direct drive pumping unit of the present embodiment is placed in the middle, and be flame retardant rubber band, width 360mm, is fixedly wrapped on parent roll by one, lower end connecting well mouth polish rod; Counterweight belt 4 symmetry is arranged on well head belt both sides, width 180mm, two, is fixedly wrapped on parent roll in the other direction, and lower end connects ballast box 3.The mode of bolt+pressing plate is adopted to fix between belt and parent roll.Switch board is arranged on ground on oil pumper rear base or neighbouring.Power set 6, as an independently module, are arranged on the top of frame 2.Frame 2 vertically rear and support bolt is fixed, and is arranged on the concrete pedestal in well site.The motor of power set is connected with the built-in reducer in parent roll, is arranged in juxtaposition before and after guiding reel 67 and parent roll 64.One end of well head belt 5 is fixedly wrapped on the parent roll 64 of power set, connects well head polished rod eye after walking around guiding reel 67.One end of counterweight belt 4 is fixedly wrapped in parent roll 64 in the other direction, is connected with the fall arrest ballast box in frame.Because the center of gravity of power set is comparatively forward, the diagonal brace 8 that between frame 2 and rear base 1, installation length is adjustable, for straining frame 2, strengthening the rigidity of frame and preventing from occurring in oil pumping process toppling.
Composition graphs 2 is the frame 2 of long stroke direct drive pumping unit.It comprises front base 21, girder 22, lower engaging lug seat 23, iron gate 24, guide pipe 25, ladder 26, upper engaging lug seat 27, frame top board 28.
The frame main beam 22 of the present embodiment adopts H steel, and base 21 before the bottom welding of two girders, upper end welding stand top board 28, frame top board 28 is " mouth " shape.Front base 21 and rear base 1 chain connection; Ladder 26 is arranged on rear side of frame, and as the lower channel of power set installation and maintenance, a corresponding iron gate 24 is welded with the ladder with ladder consistent size.Girder medial center is arranged symmetrically with guide pipe 26, adopts φ 60 pipe, for the guiding in the upper and lower running of ballast box in frame.For reducing ballast box directive wheel to the horizontal pressure force of leading truck, the tangent to periphery after guiding reel is wound around belt aligns with the center line of guide pipe 26.
Composition graphs 3 is ballast box 3 structural representation of long stroke pumping unit.It comprises fall arrest ballast box and one or more common ballast box below.Symmetrical installation directive wheel 302 on casing.Wherein, fall arrest ballast box has concurrently and holds balancing weight and anti-falling function, and common ballast box only has the function holding balancing weight.
The ballast box gross weight of the present embodiment is 7.5t, after wherein balancing weight filled by fall arrest ballast box, maximum weight is 5t, after balancing weight filled by common ballast box, maximum weight is 5t, adjusts balancing weight quantity after measured motor electric current, until the electric current of up-down stroke is basically identical.
Composition graphs 4 is fall arrest ballast box structural representation.It comprises the parts such as junction plate 301, directive wheel 302, casing 303, load-bearing pull bar 304, spring strut 305, holddown spring 306, special-shaped brake component 307, stock 308, ear seat 309, tooth bar 310, drive 311, pull bar 312, fork 313, ear seat 314.
Load-bearing pull bar 304 upper end is connected with counterweight belt 4 by junction plate 301; Load-bearing pull bar 304 interlude processes a boss, boss and be fixed on casing between spring strut 305 holddown spring 306 is housed; Two planes of load-bearing pull bar 304 lower end symmetry install tooth bar 310 respectively, and the drive 311 be arranged on bottom half ear seat engages with tooth bar 310, by the tooth bar 310 vertically mobile transverse shifting being converted to connecting rod.The front hole of pull bar 312 and swing hole 3111 chain connection of drive 311, center rotating hole 3112 and fork 313 chain connection, the metapore of pull bar 312 and swing hole 3072 chain connection of special-shaped brake component 307.The centre bore 3071 of brake block is connected through the hinge on the ear seat of body side.
Two pitch-rows of drive 311, fork 313, special-shaped brake component 307 are equal respectively, the parallelogram in parallel with forming two between pull bar 312, casing ear seat.
Composition graphs 5-7, is drive appearance schematic diagram, can adopts multiple concrete form, and the some or all of gabarit of drive 311 is gear.It has the double action of gear and fork concurrently.Drive 311 center is processed with rotation hole, and outside is processed with and swings hole.Drive 311 engages with the tooth bar 310 be arranged on load-bearing pull bar 304, by tooth bar vertically movement be converted to the transverse shifting of connecting rod.
What the fall arrest ballast box of the present embodiment adopted accounts for 5/8 of circumference with center rotating hole 3112 gear parts, and module is 3, and reference diameter is 80mm.The circumference swinging place, hole 3111 is 100mm.
Composition graphs 8 is special-shaped retaining structures schematic diagram.Abnormity brake component 307 comprises special-shaped brake bracket and friction catch block two parts.Brake holder gabarit can be selected to take centre bore as off-centre operation or the evolvent type structure in the center of circle, and special-shaped brake component is installed along the center line symmetry of casing, and for avoiding frame guide pipe, the brake block of every side is arranged symmetrically with centered by frame guide pipe.The present embodiment brake bracket profile is the shape with centre bore 3071 part circular that is the center of circle and part off-centre operation composition, and outside is processed with the exit orifice 3072 of cylinder lever connecting rod.
Friction catch block is chosen as elastomeric material, and has higher friction factor between steel surface, can bear larger deformation quantity; The friction catch block of the special-shaped brake component 307 of the present embodiment is synthetic rubber, and thickness is 20mm, can produce larger deformation quantity during extruding.
Composition graphs 9 is fall arrest ballast box fundamental diagram.When oil pumper normally works, counterweight belt 4 is in tensioned state.Spring 306 in the middle of load-bearing pull bar 304 is in impaction state, and tooth bar 310 is positioned at topmost, and the outer rim of brake block 307 and the girder H steel of frame 2 keep the gap of about 15mm.
When belt breaks de-, load-bearing pull bar 304 moves down relative to casing 303, and the drive 311 promoting to engage with tooth bar 310 rotates, and moves outside pull bar 312 level, promotes brake block 307 and rotates around centre bore.Contact with the girder H steel of frame 2 after moving outside brake block 307 outer rim level, produce brake drag effect.Due to brake block 307 and the girder H steel frictional force effect of frame 2, brake block 307 continues around center rotating, and corresponding friction brake force increases gradually, and ballast box 3 stops descending.
The operating principle of abnormity brake component 307 action is, two pitch-rows of drive 311, fork 313, special-shaped brake component 307 are equal, the parallelogram in parallel with forming two between pull bar, casing ear seat, according to the characteristic of parallelogram, when a hypotenuse gradient changes, there is same change in the gradient of another hypotenuse, keeps four limits parallel between two.Therefore, when the hypotenuse at drive 311 place swings certain angle, the hypotenuse at fork 313 place and the hypotenuse at special-shaped brake component 307 place swing corresponding angle equally.
When needs counterweight belt 4 is repaired, above carry load-bearing pull bar 304, holddown spring 306 pressurized on load-bearing pull bar 304 shortens, and load-bearing pull bar 304 moves relative on ballast box 3.On the tooth bar 310 that moves drive drive 311 to rotate backward, drive pull bar 312 in the horizontal direction in move.312 of inside translation pulls special-shaped brake component 307 around center of rotation counter-rotation, and special-shaped brake component 307 departs from frame 2 gradually, and brake force is removed.
Fall in braking procedure in the operation of oil pumper and counterweight, the directive wheel 302 of ballast box 3 is along frame guide pipe about 25 even running.In fall arrest process, because four brake block are arranged symmetrically with, the ballast box rollover that there will not be the brake force difference of casing both sides to cause too greatly.
In conjunction with Figure 10, power set schematic diagram.It comprises the parts such as power set base plate 61, electro-hydraulic brake device 62, brake disc 63, parent roll 64, motor 65, support 66, guiding reel 67, bearing and bearing support 68.Spool shaft 645 one end is connected by bearing support 68 with between power set base plate 61, and the other end is connected with power set base plate 61 by support 66.Spool shaft 645 is provided with brake disc 63, and on power set base plate 61, correspondence is provided with electro-hydraulic brake device 62.
Brake disc 63 external diameter of the present embodiment is φ 900mm > parent roll 64 external diameter φ 600mm, because the braking arm of force is comparatively large, arranges two electro-hydraulic brake devices 62 before and after brake disc simultaneously, and the electro-hydraulic brake type of needs is number less.
Guiding reel 67 can be fixed front and back, is convenient to well head belt 5 centering well head.In well workover process, the mode of moving guiding reel after can passing through avoids well head.
In conjunction with Figure 11, built-in reducer appearance schematic diagram.Built-in reducer comprises input I, output II two parts.The power shaft of input is processed with on input shaft bore 6421, input housing and is processed with motor flange adpting flange 6422 and support adpting flange 6423, the output of tubular is processed with coupling flange, output end 6424.The deceleration transmission form of built-in reducer includes but not limited to planetary gear type.This example adopts planetary gear type type of belt drive, and sun gear is connected with power shaft, and the housing with ring gear is output.
In conjunction with Figure 12, shown parent roll structural representation.It comprises inner flange 641, built-in reducer 642, gripper shoe 643, gusset 644, spool shaft 645, outer baffle 646, cylindrical shell 647, motor 65, support 66.Electric machine casing is connected with built-in reducer input flange (i.e. motor flange adpting flange 6422), and motor shaft is connected on the input shaft bore 6421 of built-in reducer.The output II of built-in reducer is arranged on the inner flange 641 of parent roll one end by coupling flange, output end 6424, and input I is by support 66(Flange joint) be fixed on power set base plate 61.
The parent roll diameter of the present embodiment is 660mm, and for strengthening bearing capacity, arrange two pieces of gripper shoes 643 in parent roll, spool shaft 645 is welded respectively with two pieces of gripper shoes 644.
Built-in reducer 642 long time running, case temperature can raise, and inner flange 641 and gripper shoe 643 process heat elimination hole respectively.Meanwhile, the gusset 644 of outer baffle is vertically in oblique layout, and in rotation process, the gusset of oblique layout can strengthen the circulation of air.
Motor 65 adopts the frequency control motor with inner brake.Be applicable to need frequency control, in short-term or interruption period runs, the frequent occasion playing braking.
Composition graphs 13-14 is power set base plate 61 and frame top board 28 profile contrast schematic diagram.When shown " Qian " shape power set base plate 61 is installed to " mouth " shape frame top board 28, the frame of frame top board 28 back is vacated.Under the state of machine frame erection, for installation or removal power set reserve operating space.
In conjunction with Figure 12, it is long stroke pumping unit control system flow chart.Have debugging mode or duty selective.
Under debugging mode, adopt the mode upstream or downstream of crawl, make polished rod and ballast box accurately be parked in desired location, be convenient to the adjustment stroke position of the switch, hung the operation such as counterweight, installation testing instrument.
Under duty, control system controls motor and runs.When testing operation stop, position sensor sends signal to control system, and control system controls motor speed reduction, stopping, inverted running.Control motor speed, realize synchronized, upper fast lower slow etc. up and down, adapt to the needs produced that recover the oil.
Below be only an exemplary embodiments of the present invention; for those skilled in the art; under the premise without departing from the principles of the invention, likely make some improvements and modifications to partial structurtes, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. one kind has the long stroke direct drive pumping unit of double brake and counterweight anti-falling function, comprise base and the vertical frame arranged on it, power set are installed on the top of described frame, the ballast box that can move back and forth up and down along it is installed in the inside of described frame, described power set comprise driving mechanism and drive by it reel rotated, on described reel, positive direction is fixing is wound around well head belt, in the other direction fixing winding counterweight belt, and the lower end of described counterweight belt connects ballast box; Described power set are provided with check mechanism; It is characterized in that:
Described ballast box is fall arrest ballast box, it load-bearing pull bar comprising casing and run through casing from top to bottom, and the upper end of described load-bearing pull bar is connected with counterweight belt, the left and right sides of lower end symmetry is installed tooth bar or is processed as rack structure; Described casing internal fixtion spring strut, described load-bearing pull bar interlude processes a boss, is provided with holddown spring and holddown spring is sleeved in the middle part of load-bearing pull bar in described spring strut, the lower end of described holddown spring and described boss against, upper end and spring strut against; The bottom symmetrical of described casing installs two parallel-crank mechanisms, each parallel-crank mechanism comprise drive, fork, pull bar and ear seat; Wherein said ear seat comprises the inner ear seat and external ear seat that are fixed on bottom half side by side, and the two forms the upper horizontal sides of parallel-crank mechanism; Described drive comprise with center rotating hole gear parts and be positioned at the swing hole of its neighboring, described drive by center rotating hole and described inner ear seat hinged and form a hypotenuse of parallel-crank mechanism, the upper end of described fork and external ear seat hinged and form another hypotenuse of row quadrangular mechanism; The two ends of described pull bar are connected with the lower end of fork, the swing hole of drive respectively and form the lower horizontal sides of parallel-crank mechanism;
The bilateral symmetry of described casing installs brake component, and described brake component comprises the brake block with centre bore and neighboring exit orifice, and the side of described centre bore and casing is hinged, and the outer end of described exit orifice and described pull bar is hinged; Described brake block is provided with the brake area corresponding with the inner surface of described frame, and when described brake area contacts with frame inner surface, the two can form frictional fit;
Described load-bearing pull bar lower end by the tooth bar of both sides respectively with two parallelogram inside drive realize engagement fit;
The reducer that described driving mechanism comprises motor and is in transmission connection with it, described check mechanism comprises the built-in brake of motor and the electro-hydraulic brake device for spool shaft braking.
2. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: described reducer is the built-in reducer being arranged at reel inside, input and the output of described built-in reducer are coaxial, the power shaft of wherein said motor is connected with the input of built-in reducer, and the output of described built-in reducer is connected with reel.
3. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 2, it is characterized in that: inner flange, gripper shoe are fixed vertically successively in described reel inside; Described built-in reducer comprises input housing and the output housing in relative rotation of geo-stationary, installs power shaft in described input housing, and described power shaft one end is in transmission connection, motor output shaft, the other end are in transmission connection described output housing; Described input housing is fixed with motor adpting flange, support adpting flange outward successively, and described input housing is connected by motor adpting flange and electric machine casing flange, be connected by support adpting flange and the flange bracket being fixed on frame top; Described output housing extenal fixation coupling flange, output end, and described output housing is connected by the inner flange flange of coupling flange, output end and described reel inside; Dead block axle in described gripper shoe, the other end of described spool shaft is extended laterally and is arranged on the bearing support of frame top by bearing.
4. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: described brake component profile is take centre bore as the part circular in the center of circle and the involute in form of part off-centre operation composition; The brake area of described brake component is processed with continuous print groove.
5. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: described frame medial center is arranged symmetrically with guide pipe, for the guiding in the upper and lower running of ballast box in frame, the side of described ballast box casing is provided with multiple directive wheel.
6. have the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: described power set are all fixed on power set base plate, described power set base plate is connected with the top board of frame by bolt; Described power set base plate is " Qian " shape, and the top board of described frame is " mouth " shape.
7. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: the guiding reel be arranged in juxtaposition before and after described reel comprises and parent roll; One end of described well head belt is fixedly wrapped on parent roll, connects well head polished rod eye after then walking around guiding reel.
8. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 3, it is characterized in that: described inner flange and gripper shoe process heat elimination hole respectively, outside described gripper shoe, be provided with multiple gusset vertically in oblique layout.
9. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: described fall arrest ballast box bottom connects common ballast box, and described fall arrest ballast box and common ballast box are all contained with balancing weight.
10. there is the long stroke direct drive pumping unit of double brake and counterweight anti-falling function according to claim 1, it is characterized in that: described base is made up of hinged front base and rear base, described frame is fixed on front base, described frame side is respectively equipped with ladder and move into for the balancing weight in frame and shift out can the door of switch; The diagonal brace that between described frame and rear base, installation length is adjustable.
CN201520814639.3U 2015-10-21 2015-10-21 Long stroke directly drives beam -pumping unit with function of falling is prevented to dual braking and counter weight Withdrawn - After Issue CN205172527U (en)

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CN201520814639.3U CN205172527U (en) 2015-10-21 2015-10-21 Long stroke directly drives beam -pumping unit with function of falling is prevented to dual braking and counter weight

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105275434A (en) * 2015-10-21 2016-01-27 胜利油田高原石油装备有限责任公司 Long-stroke direct-drive pumping unit with dual-brake and balance weight fall prevention functions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105275434A (en) * 2015-10-21 2016-01-27 胜利油田高原石油装备有限责任公司 Long-stroke direct-drive pumping unit with dual-brake and balance weight fall prevention functions
CN105275434B (en) * 2015-10-21 2018-01-09 胜利油田高原石油装备有限责任公司 A kind of long stroke direct drive pumping unit with double brake and counterweight anti-falling function

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