CN103573225A

CN103573225A - Energy-saving pumping unit with pumping rods reciprocating through rotation of crankshafts and wire winding rope and ring

Info

Publication number: CN103573225A
Application number: CN201310542738.6A
Authority: CN
Inventors: 毛国武; 毛新宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-29
Filing date: 2013-10-29
Publication date: 2014-02-12
Anticipated expiration: 2033-10-29
Also published as: CN103573225B

Abstract

The invention discloses an energy-saving pumping unit with pumping rods reciprocating through rotation of crankshafts and a wire winding rope and ring, and belongs to an energy-saving pumping unit in the technical field of oil recovery of the oil field. According to the energy-saving pumping unit, symmetric vertical steel tube slide ways are arranged in front of a rack, a slide wheel carrier is arranged in middles of the steel tube slide ways, and slide wheels are arranged at the upper end and the lower end of the slide wheel carrier respectively; arc surfaces are formed in excircles of the slide wheels and are propped against the slide ways; the slide wheels can reciprocate and roll on the steel tube slide ways; front ends of balancing ropes are connected to the slide wheel carrier and a front pumping rod, and rear ends of the balancing ropes are connected with a connecting plate and a rear pumping rod; the front end of a wire winding rope is fixed on the slide wheel carrier, and the rear end of the wire winding rope is fixed on a wire winding ring; a crank pin penetrates through a hole of the wire winding ring and upper holes in positioning cranks; and the positioning cranks are connected with basic cranks, the crankshafts and chain wheels. When the chain wheels rotate, the front pumping rod and the rear pumping rod oppositely reciprocate; the energy-saving pumping unit can pump oil in two oil wells; the energy can be saved by 75% while compared with a beam-pumping unit; and one machine can save energy by 50%.

Description

Crankshaft rotating coiling is made well bar and is moved back and forth energy-saving pumping unit

One, technical field: it is the energy-saving pumping unit in oil extraction in oil field technical field that well bar reciprocating motion energy-saving pumping unit is made in crankshaft rotating coiling.

Two, background technology: known, currently used oil-field oil pumper kind is a lot, because oil pumper is in oil pumping in oil fields process, wastes a large amount of electric energy, particularly beam pumping unit waste electric energy is serious especially, and oil pump energy-saving problem is the problem in current oil field equipment.

Three, summary of the invention: for solving the problem in background technology, the object of the invention is to provide a kind of crankshaft rotating coiling and makes well bar reciprocating motion energy-saving pumping unit, the technical task of the confidential solution of this energy-conserving oil pumping is: Rack Body is solid figure frame body, in the both sides, the place ahead of solid figure frame body, be provided with the vertical straight round steel pipe slideway of two symmetries, in the centre of round steel pipe slideway, be provided with slip wheel carrier, upper at the two ends of slip wheel carrier, lower position is respectively equipped with movable pulley, the top of movable pulley is semicircular arc face, this semicircular arc face withstands on the semi arch on steel pipe slideway, slip wheel carrier upper, lower plane Ban center is provided with through hole, the upper end of well bar before fixed in the through hole at the lower plane plate center of slip wheel carrier, fixed the front end of coiling rope in the through hole at the upper surface plate center of slip wheel carrier, the vicinity symmetrical stabilizer that is provided with respectively in forward and backward crossbeam both sides above Rack Body, stabilizer overhung balance rope, the front end of two balance ropes is symmetrical respectively drops on that on movable pulley frame, in surface plate two ends vicinity under vertical, the front end of two balance ropes respectively with slip wheel carrier on vicinity, surface plate two ends carry out fixed, the rear end of two balance ropes is walked around respectively the stabilizer top being provided with above Rack Body below and is hung, and the rear end of two balance ropes is cemented in respectively in the both ends of the surface of junction plate, the center of junction plate is provided with screw, installs connecting bolt in screw, together with the upper end of rear well bar is tightly same as with connecting bolt, centre at two lower longerons of Rack Body is provided with a crossbeam, is respectively equipped with two symmetrical upright bent axle supports in the centre of crossbeam, and the upper top of two bent axle supports is fixed bearing support respectively, is packing bearing in bearing support into, installs bent axle in bearing, respectively with the circular hole of two basic crank lower ends, be set on one end axle of symmetrically arranged two bent axles, carry out fixed, the vicinity of two symmetrically arranged basic crank upper ends is respectively equipped with two holes of interpenetrating, positioning crank is strip steel plate body, two positioning cranks are being symmetrical arranged, on the longitudinal midline of middle and lower part plate face of two positioning cranks respectively decile be provided with several through holes, wherein the distance of two through holes of the distance of two adjacent through holes and basic crank top is equal, with crank bolt, the bottom through hole of the top of basic crank and positioning crank is worn and is connected, carry out fastening, wire winding ring is set on the cylindrical at crank-pin middle part, can rotate, crank-pin two end axles is put into respectively in the through hole on two positioning crank tops, rear end and the wire winding ring cylindrical middle of coiling rope are carried out fixed, bent axle one end be enclosed in the centre bore of sprocket wheel, carry out fixed, when rotating sprocket, the crank forming with basic crank and positioning crank is synchronizeed and is rotated with chain crop rotation, rotation due to crank, the wire winding ring wearing in crank-pin outside and the coiling rope connecting together with rotating, so wire winding ring is pulling coiling rope, coiling rope is by cylindrical above the head sheave of Rack Body front upper, the vertical slip wheel carrier that pulling is done the reciprocating motion of vertical, when crank-pin moves to top dead centre, below slip wheel carrier in the middle of fixed front well bar move to lower dead center, meanwhile, fixed rear well bar moves to top dead centre in the middle of junction plate, when crank-pin moves to lower dead center, front well bar moves to top dead centre, meanwhile, rear well bar moves to lower dead center, when the distance of two pumpingh wells equals the distance of front well bar and rear well bar, front well bar and rear well bar are installed respectively in these two pumpingh wells, rotating sprocket rotates bent axle, so front well bar and rear well bar are reciprocating respectively, because the weight of front well bar equals the weight of rear well bar, bent axle is in rotation process, eliminate the phenomenon of invalid work done, the present invention is the energy-saving pumping unit that a machine is taken out two wells, and it can save energy 75% according to beam pumping unit, when the present invention is during as unit oil pumper, the weight of rear well bar can be replaced with to balance weight iron, make the weight of balance weight iron and the weight equal and opposite in direction of front well bar, so sprocket rotation rotates bent axle, meanwhile, wire winding ring is pulling coiling rope to rotate, and when wire winding ring moves to top dead centre, front well bar moves to lower dead center, and balance weight iron moves to top dead centre, and when wire winding ring moves to lower dead center, front well bar moves to top dead centre, meanwhile, balance weight iron moves to lower dead center, when the present invention takes out the oil pumper of single well as unit, according to beam pumping unit, can energy-conservation 50%, the present invention is simple in structure, durable.

The technical solution adopted in the present invention: crankshaft rotating coiling is made well bar and moved back and forth energy-saving pumping unit, is formed with Rack Body, footing wheel, footing wheel frame plate, footing wheel shaft, front well bar, movable pulley, slip wheel shaft, slip wheel carrier, stabilizer, wheel frame plate, wheel shaft, coiling rope, balance rope, wire winding ring, crank-pin, positioning crank, crank bolt, basic crank, bent axle, sprocket wheel, bent axle support, junction plate, connecting bolt, rear well bar, head sheave, bearing support and bearing; It is characterized in that: Rack Body is solid figure frame body, in the both sides, the place ahead of solid figure frame body, be provided with the vertical straight round steel pipe slideway of two symmetries, in the centre of two lower longeron length of Rack Body, connecting a crossbeam; Footing wheel is circular steel body, at circular steel Ti center, establishes a through hole; Footing wheel frame plate and wheel frame plate are strip steel plate bodies, are provided with a through hole in one end of strip steel plate body; Footing wheel shaft, front well bar, slip wheel shaft, wheel shaft, crank-pin and rear well bar are all cylindrical steel bodies; Movable pulley is that a through hole is established at circular wheel ，Lun center, at the dome of taking turns, is provided with semicircular cannelure; Slip wheel carrier is the strip frame body being combined into steel plate, in the both sides at the two ends of strip frame body be respectively equipped with up and down the symmetrical plate leg of extension, symmetrically respectively in the end of the symmetrical plate leg extending is provided with a through hole; At the upper surface plate of slip wheel carrier and the center of lower plane plate, be provided with through hole; Stabilizer and head sheave are circular wheel, at the center of circular wheel, establish a through hole, are provided with the cannelure of V-arrangement ditch on the cylindrical of circular wheel; Coiling rope and balance rope are wire rope; Wire winding ring is annular steel body; Positioning crank is two bar steel plates of a symmetry, and in the upper end of bar steel plate, vicinity is respectively provided with a symmetrical identical through hole, and on the center line of the middle and lower part stripe board face of positioning crank, decile is respectively provided with several through holes; Basis crank is two bar steel plates of a symmetry, and in the lower end of the plate face of bar steel plate on the center line of vicinity, the symmetrical through hole of respectively establishing respectively, symmetrically respectively on the center line of the vicinity, plate face top of bar steel plate respectively establishes two through holes; Bent axle is stairstepping cylindrical steel body, and in one end of crankshaft length, vicinity is provided with large dome; Bent axle support is strip steel body; Junction plate is strip steel plate, in the plate face center of strip steel plate, establishes a screw; Bearing support is square steel plate body, at the center of square steel plate body, establishes a through hole; Bearing is annular copper body; The structure of this oil pumper: in two lower longerons of the Rack Body of this oil pumper, the forward and backward vicinity of lower plane is provided with footing wheel frame plate, pierces in the centre bore of footing wheel frame plate and footing wheel with footing wheel shaft; With slip wheel shaft, pierce in the through hole of slip wheel carrier two ends extension board and the centre bore of movable pulley respectively, the cylindrical of movable pulley withstands on the steel pipe slideway before Rack Body; The upper end of front well bar is cemented in the interstitial hole of slip wheel carrier lower plane plate, and the front end of coiling rope is cemented in the interstitial hole of surface plate on slip wheel carrier; The lower end of wheel frame plate respectively symmetry is cemented in the interior vicinity above of the forward and backward top rail of Rack Body, and wheel shaft pierces into respectively in the centre bore of the circular hole neutral equilibrium wheel on wheel frame plate top, and balance rope is suspended in the upper top vee-cut of stabilizer; The balance rope front end of two symmetrical mountings, hangs respectively that in surface plate two ends vicinity on slip wheel carrier, two balance rope front ends respectively with slip wheel carrier in surface plate two ends vicinity carry out fixed; The rear end of two balance ropes hangs respectively in the both ends of the surface of junction plate, and the rear end of balance rope and the both ends of the surface of junction plate are carried out fixed; Connecting bolt one end is screwed in the screw at junction plate center, together with the other end of connecting bolt is consolidated in the upper end of rear well bar; On the middle part of the front top rail of Rack Body, plane and two wheel frame plate lower planes carry out fixed, wheel shaft pierces into takes turns in the hole of frame plate and in the centre bore of head sheave at this, coiling rope is suspended on the vee-cut of head sheave cylindrical, carries out fixed on the rear end of coiling rope and the periphery of wire winding ring; Crank-pin pierces in the centre bore of wire winding ring, crank-pin two end axles cylindrical is cemented in respectively in the through hole of positioning crank top symmetry, two through holes that two adjacent two through holes in positioning crank bottom and basic crank top are provided with, be respectively charged into two crank bolts, fastening with crank bolt; The symmetrically arranged through hole in bottom of two basic cranks, be cemented in respectively on two symmetrically arranged crankshaft end cylindricals, two symmetrically arranged bent axle centre positions are respectively charged in the centre bore of bearing, bearing is enclosed in the centre bore of bearing support, the upper plane of the lower plane of bearing support and bent axle support is carried out fixed, and the lower end of bent axle support is cemented in respectively the vicinity, middle part of Rack Body base cross members; The centre bore of sprocket wheel be set on the other end cylindrical of bent axle, carry out fixed.

The advantage of above technical scheme: being equal in weight of the front well bar of this energy-saving pumping unit and rear well bar, the weight of front well bar and rear well bar is by slip wheel carrier, balance rope and junction plate are communicated in together, because slip wheel carrier is above front well bar, the wheel carrier that simultaneously slides is below balance rope front portion, balance rope is suspended on the top of stabilizer, with stabilizer, supporting balance rope, the rear end of balance rope is cemented on junction plate, the top of rear well bar is connected on junction plate, so acting on stabilizer of the weight balancing of front well bar and rear well bar, because the weight of slip wheel carrier is greater than the weight of junction plate, so the gross weight that the anterior balance rope of stabilizer bears is greater than the gross weight that stabilizer rear portion balance rope bears, after causing front well bar stressed, move downward, front well bar is pulling rear well bar, rear well bar is moved upward, middle at the top panel of slip wheel carrier is connected with the front end of coiling rope, and coiling rope is walked around the upper top cylindrical of head sheave, and the rear end of coiling rope is connected with the cylindrical of wire winding ring, when bent axle rotates, the wire winding ring that is arranged on crank-pin outside circles, when wire winding ring moves from top dead centre to lower dead center, coiling rope is by the rotation at head sheave top, vertical pulling slip wheel carrier and front well bar move upward, and meanwhile, rear well bar is done moving downward of vertical, when wire winding ring moves downward lower dead center, front well bar moves to top dead centre, and meanwhile, rear well bar moves to lower dead center, when wire winding ring moves from lower dead center to top dead centre, the gravity of slip wheel carrier is pulling coiling rope to move downward, meanwhile, front well bar moves downward, rear well bar moves upward, because crankshaft rotating pulls the front end of coiling rope reciprocating, front well bar and rear well bar are done the reciprocating motion of opposite direction, so the oil pumper of the technical program is the fluid that an oil pumper can be taken out two mouthfuls of oil wells, when replacing the weight of equal rear well bar with the weight of weight, front well bar can be taken out the fluid of single oil well, and the present invention is according to beam pumping unit, and the fluid that takes a pull at oil well with unit is contrasted, can energy-conservation 50 ‰, with a machine, take out the fluid of two mouthfuls of producing wells and contrast, can energy-conservation 75%, this oil pumper durable, maintenance is convenient.

Four, accompanying drawing explanation:

Fig. 1 is that the main apparent structure schematic diagram that well bar moves back and forth energy-saving pumping unit is made in crankshaft rotating coiling.

Fig. 2 is the left apparent structure schematic diagram of Fig. 1.

Fig. 3 is the schematic diagram of structure of overlooking of Fig. 1.

Fig. 4 is the A of Fig. 1---A looks on a left side profile construction schematic diagram.

Fig. 5 is the B of Fig. 1---B overlooks profile construction schematic diagram.

Five, the specific embodiment: be elaborated below in conjunction with Fig. 1 to Fig. 5, in Fig. 1 to Fig. 5, crankshaft rotating coiling is made well bar and is moved back and forth energy-saving pumping unit, with Rack Body 1, footing wheel 2, footing wheel frame plate 3, footing wheel shaft 4, front well bar 5, movable pulley 6, slip wheel shaft 7, slip wheel carrier 8, stabilizer 9, wheel frame plate 10, wheel shaft 11, coiling rope 12, balance rope 13, wire winding ring 14, crank-pin 15, positioning crank 16, crank bolt 17, basis crank 18, bent axle 19, sprocket wheel 20, bent axle support 21, junction plate 22, connecting bolt 23, rear well bar 24, head sheave 25, bearing support 26 and bearing 27 form, it is characterized in that: Rack Body 1 is solid figure frame body, in the both sides, the place ahead of solid figure frame body, be provided with the vertical straight round steel pipe slideway of two symmetries, centre in two lower longeron length of Rack Body 1 is connecting a crossbeam, footing wheel 2 is circular steel bodies, at circular steel Ti center, establishes a through hole, footing wheel frame plate 3 and wheel frame plate 10 are strip steel plate bodies, are provided with a through hole in one end of strip steel plate body, footing wheel shaft 4, the bar 5 that advances, slip wheel shaft 7, wheel shaft 11, crank-pin 15 and rear well bar 24 are all cylindrical steel bodies, movable pulley 6 is that a through hole is established at circular wheel ，Lun center, at the dome of taking turns, is provided with semicircular cannelure, slip wheel carrier 8 is the strip frame bodies that are combined into steel plate, in the both sides at the two ends of strip frame body be respectively equipped with up and down the symmetrical plate leg of extension, symmetrically respectively in the end of the symmetrical plate leg extending be provided with a through hole, at the upper surface plate of slip wheel carrier 8 and the center of lower plane plate, be provided with through hole, stabilizer 9 and head sheave 25 are circular wheel, at the center of circular wheel, establish a through hole, are provided with the cannelure of V-arrangement ditch on the cylindrical of circular wheel, coiling rope 12 and balance rope 13 are wire rope, wire winding ring 14 is annular steel bodies, positioning crank 16 is two bar steel plates of a symmetry, and in the upper end of bar steel plate, vicinity is respectively provided with a symmetrical identical through hole, and on the center line of positioning crank 16 middle and lower part stripe board faces, decile is respectively provided with several through holes, basis crank 18 is two bar steel plates of a symmetry, and in the lower end of the plate face of bar steel plate on the center line of vicinity, the symmetrical through hole of respectively establishing respectively, symmetrically respectively on the center line of the vicinity, plate face top of bar steel plate respectively establishes two through holes, bent axle 19 is stairstepping cylindrical steel bodies, and in one end of bent axle 19 length, vicinity is provided with large dome, bent axle support 21 is strip steel bodies, junction plate 22 is strip steel plates, in the plate face center of strip steel plate, establishes a screw, bearing support 26 is square steel plate bodies, at the center of square steel plate body, establishes a through hole, bearing 27 is annular copper bodies, the structure of this oil pumper: in two lower longerons of the Rack Body 1 of this oil pumper, the forward and backward vicinity of lower plane is provided with footing wheel frame plate 3, pierces in the centre bore of footing wheel frame plate 3 and footing wheel 2 with footing wheel shaft 4, with slip wheel shaft 7, pierce in slip wheel carrier 8 through holes of two ends extension board and the centre bore of movable pulley respectively, the cylindrical of movable pulley 6 withstands on the steel pipe slideway before Rack Body, the upper end of front well bar 5 is cemented in the interstitial hole of slip wheel carrier 8 lower plane plates, and the front end of coiling rope 12 is cemented in the interstitial hole of surface plate on slip wheel carrier 8, the lower end of wheel frame plate 10 respectively symmetry is cemented in the interior vicinity above of the forward and backward top rail of Rack Body 1, and wheel shaft 11 pierces into respectively in the centre bore of the circular hole neutral equilibrium wheel on wheel frame plate 10 tops, and balance rope 13 is suspended in the upper top vee-cut of stabilizer 9, balance rope 13 front ends of two symmetrical mountings, hang respectively that in surface plate two ends vicinity on slip wheel carrier 8, two balance rope 13 front ends respectively with slip wheel carrier 8 in surface plate two ends vicinity carry out fixed, the rear end of two balance ropes 13 hangs respectively in the both ends of the surface of junction plate 22, and the both ends of the surface of the rear end of balance rope 13 and junction plate 22 are carried out fixed, connecting bolt 23 one end are screwed in the screw at junction plate 22 centers, together with the other end of connecting bolt 23 is consolidated in the upper end of rear well bar 24, on the middle part of the front top rail of Rack Body 1, plane and two wheel frame plate 10 lower planes carry out fixed, wheel shaft 11 pierces in the hole of wheel frame plate 10 and in the centre bore of head sheave 25, coiling rope 12 is suspended on the vee-cut of head sheave 25 cylindricals, carries out fixed on the rear end of coiling rope 12 and the periphery of wire winding ring 14, crank-pin 15 pierces in the centre bore of wire winding ring 14, and crank-pin 15 two end axles cylindricals are cemented in respectively in the through hole of positioning crank 16 top symmetries, two through holes that two adjacent two through holes in positioning crank 16 bottoms and basic crank 18 tops are provided with, are being respectively charged into two crank bolts 17, fastening with crank bolt 17, the symmetrically arranged through hole in bottom of two basic cranks 18, be cemented in respectively on two symmetrically arranged bent axle 19 end cylindricals, two symmetrically arranged bent axle 19 centre positions are respectively charged in the centre bore of bearing 27, bearing 27 is enclosed in the centre bore of bearing support 26, the upper plane of the lower plane of bearing support 26 and bent axle support 21 is carried out fixed, and the lower end of bent axle support 21 is cemented in respectively the vicinity, middle part of Rack Body 1 base cross members, the centre bore of sprocket wheel 20 be set on the other end cylindrical of bent axle 19, carry out fixed.

Claims

1. crankshaft rotating coiling is made well bar and is moved back and forth energy-saving pumping unit, with Rack Body (1), footing wheel (2), footing wheel frame plate (3), footing wheel shaft (4), front well bar (5), movable pulley (6), slip wheel shaft (7), slip wheel carrier (8), stabilizer (9), wheel frame plate (10), wheel shaft (11), coiling rope (12), balance rope (13), wire winding ring (14), crank-pin (15), positioning crank (16), crank bolt (17), basis crank (18), bent axle (19), sprocket wheel (20), bent axle support (21), junction plate (22), connecting bolt (23), rear well bar (24), head sheave (25), bearing support (26) and bearing (27) form, it is characterized in that: Rack Body (1) is solid figure frame body, in the both sides, the place ahead of solid figure frame body, be provided with the vertical straight round steel pipe slideway of two symmetries, centre in two lower longeron length of Rack Body (1) is connecting a crossbeam, footing wheel (2) is circular steel body, at circular steel Ti center, establishes a through hole, footing wheel frame plate (3) and wheel frame plate (10) are strip steel plate bodies, are provided with a through hole in one end of strip steel plate body, footing wheel shaft (4), front well bar (5), slip wheel shaft (7), wheel shaft (11), crank-pin (15) and rear well bar (24) are all cylindrical steel bodies, movable pulley (6) is that a through hole is established at circular wheel ，Lun center, at the dome of taking turns, is provided with semicircular cannelure, slip wheel carrier (8) is the strip frame body being combined into steel plate, in the both sides at the two ends of strip frame body be respectively equipped with up and down the symmetrical plate leg of extension, symmetrically respectively in the end of the symmetrical plate leg extending be provided with a through hole, at the upper surface plate of slip wheel carrier (8) and the center of lower plane plate, be provided with through hole, stabilizer (9) and head sheave (25) are circular wheel, at the center of circular wheel, establish a through hole, are provided with the cannelure of V-arrangement ditch on the cylindrical of circular wheel, coiling rope (12) and balance rope (13) are wire rope, wire winding ring (14) is annular steel body, positioning crank (16) is two bar steel plates of a symmetry, and in the upper end of bar steel plate, vicinity is respectively provided with a symmetrical identical through hole, and on the center line of positioning crank (16) middle and lower part stripe board face, decile is respectively provided with several through holes, basis crank (18) is two bar steel plates of a symmetry, in the lower end of the plate face of bar steel plate on the center line of vicinity, the symmetrical through hole of respectively establishing respectively, symmetrically respectively on the center line of the vicinity, plate face top of bar steel plate respectively establishes two through holes, bent axle (19) is stairstepping cylindrical steel body, and in one end of bent axle (19) length, vicinity is provided with large dome, bent axle support (21) is strip steel body, junction plate (22) is strip steel plate, in the plate face center of strip steel plate, establishes a screw, bearing support (26) is square steel plate body, at the center of square steel plate body, establishes a through hole, bearing (27) is annular copper body, the structure of this oil pumper: in two lower longerons of the Rack Body of this oil pumper (1), the forward and backward vicinity of lower plane is provided with footing wheel frame plate (3), pierces in the centre bore of footing wheel frame plate (3) and footing wheel (2) with footing wheel shaft (4), with slip wheel shaft (7), pierce in the through hole of slip wheel carrier (8) two ends extension board and the centre bore of movable pulley respectively, the cylindrical of movable pulley (6) withstands on the steel pipe slideway before Rack Body, the upper end of front well bar (5) is cemented in the interstitial hole of slip wheel carrier (8) lower plane plate, and the front end of coiling rope (12) is cemented in the interstitial hole of the upper surface plate of slip wheel carrier (8), the lower end of wheel frame plate (10) respectively symmetry is cemented in the interior vicinity above of the forward and backward top rail of Rack Body (1), wheel shaft (11) pierces into respectively in the centre bore of the circular hole neutral equilibrium wheel on wheel frame plate (10) top, and balance rope (13) is suspended in the upper top vee-cut of stabilizer (9), balance rope (13) front end of two symmetrical mountings, the vicinity in slip wheel carrier (8) is gone up surface plate two ends that hangs respectively, two balance ropes (13) front end is gone up vicinity in surface plate two ends with slip wheel carrier (8) respectively and is carried out fixed, the rear end of two balance ropes (13) hangs respectively in the both ends of the surface of junction plate (22), and the both ends of the surface of the rear end of balance rope (13) and junction plate (22) are carried out fixed, connecting bolt (23) one end is screwed in the screw at junction plate (22) center, together with the other end of connecting bolt (23) is consolidated in the upper end of rear well bar (24), on the middle part of the front top rail of Rack Body (1), plane and two wheel frame plate (10) lower planes carry out fixed, wheel shaft (11) pierces in the hole of wheel frame plate (10) and in the centre bore of head sheave (25), coiling rope (12) is suspended on the vee-cut of head sheave (25) cylindrical, carries out fixed on the coiling rope rear end of (12) and the periphery of wire winding ring (14), crank-pin (15) pierces in the centre bore of wire winding ring (14), and crank-pin (15) two end axles cylindrical is cemented in respectively in the through hole of positioning crank (16) top symmetry, two through holes that two adjacent two through holes in positioning crank (16) bottom and basic crank (18) top are provided with, are being respectively charged into two crank bolts (17), fastening with crank bolt (17), the through hole of the bottom symmetry of two basic cranks (18), be cemented in respectively on the cylindrical of two symmetrically arranged bent axles (19) end, two symmetrically arranged bent axles (19) centre position is respectively charged in the centre bore of bearing (27), bearing (27) is enclosed in the centre bore of bearing support (26), the upper plane of the lower plane of bearing support (26) and bent axle support (21) is carried out fixed, and the lower end of bent axle support (21) is cemented in respectively the vicinity, middle part of Rack Body (1) base cross members, the centre bore of sprocket wheel (20) be set on the other end cylindrical of bent axle (19), carry out fixed.