CN2506768Y

CN2506768Y - Moving balance walking beam sucking machine

Info

Publication number: CN2506768Y
Application number: CN 01224228
Authority: CN
Inventors: 齐云财
Original assignee: DA'AN PETROLEUM MECHANICAL Co Ltd JILIN PROV
Current assignee: DA'AN PETROLEUM MECHANICAL Co Ltd JILIN PROV
Priority date: 2001-05-21
Filing date: 2001-05-21
Publication date: 2002-08-21
Anticipated expiration: 2011-05-21

Abstract

The utility model relates to a movable balancing walking beam typed oil sucking machine which comprises a drive mechanism, a winch, a swing stem, a connecting stem, a walking beam, a balancing car, a donkey head, a bracket, a bracketing spindle and a supporting spindle. A middle part of the walling beam is articulated with the bracketing spindle; the donkey head is provided with a rope hanger; the drive mechanism comprises a motor, a speed reducer, a belt, and an output spindle; the output spindle is connected with the winch, the utility model is characterized in that the walking beam is provided with a guiding rail at back of the walking beam, on which the balancing car with wheels are arranged; the balancing car can move forward and backward along the guiding rail, the balancing bar is provided with a fixed mechanism and the balancing bar is fixed when moving to a required position with a heavy thing on the balancing car. The utility model can adapt to loading changes under the well through conveniently changing balancing weight, thus saving energy of the machine.

Description

The shifting balance beam pumping unit

The utility model relates to the oil recovery machiner field, exactly relates to a kind of shifting balance beam pumping unit.

Present existing oil pumper, for example as shown in Figure 2, the drive transmission that includes motor 12, belt transmission secondary 11 and reducer 7 drives crank 9 by output shaft 8 and rotates, on the crank 9 balance weight is arranged, connecting rod 6 lower ends and crank 9 are hinged, and its upper end is hinged near the tail place with walking beam 2, and the middle part of walking beam 2 is articulated on the support shaft 3 on support 4 tops, the tail end of walking beam 2 has balance weight 5, and the front end of walking beam 2 has horse head 1.During use, drive transmission drives crank 9 and rotates around output shaft 8, drives the axis swing of the front and back end of walking beam 2 around support shaft 3 by connecting rod 6, and the polished rod eye 13 on the horse head 1 is with the crude oil extraction in the well.This existing oil pumper weak point is: the balance weight that is fixed on beam travelling tail end be owing to can not move forward and backward, thereby regulates when the down-hole magnitude of load changed difficultly, causes energy consumption big.

The purpose of this utility model overcomes above-mentioned the deficiencies in the prior art part exactly, and a kind of shifting balance beam pumping unit is provided, by changing counterpoise easily, and with the favourable situation of change that is adapted to down-hole load, thus the energy of saving machine.

The purpose of this utility model realizes that by following technical proposals shifting balance beam pumping unit of the present utility model comprises drive transmission device, crank, fork, connecting rod, walking beam, balance car, horse head, support and support shaft and back shaft; The walking beam middle part is articulated in support shaft, polished rod eye is arranged on the horse head, described drive transmission device is made up of motor, reducer, belt and output shaft, and its output shaft connects described crank, it is characterized in that described walking beam rear portion is provided with guide rail, the balance car of belt wheel is installed on this guide rail, balance car can move forward and backward along guide rail, and fixed mechanism is arranged on the balance car, moves to when needing the position at balance car, balance car is fixed, and weight is arranged on balance car.

Like this, because the underground situation of oil well changes complicated, magnitude of load can change, when the size of down-hole load changes, fixing balance car is sent out,, after its shift position reaches the balance requirement, be fixed again along its walking beam guide rail shifting balance car, reach best operating mode, and then reduce the energy consumption of oil pumper.The formation mechanism of said apparatus is: load acts on the walking beam by outstanding rope, horse head, be formed centrally a moment in the axle of its active force to support shaft, promptly be referred to as load moment, the weight of balance car is to being formed centrally a trimming moment in the support shaft, and the power that oil pumper is consumed is less.When the magnitude of load of down-hole changed, the balance car position moved forward and backward, after arm of force length changes thereupon, the size of trimming moment also changes, make oil pumper often be in equilibrium state preferably, the power that so just makes motor export is less, reaches purpose of energy saving.

Further describe structure of the present utility model below in conjunction with accompanying drawing, wherein:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the oil pumper of prior art.

In Fig. 1,1. horse head 2. walking beams 3. support shafts 4. supports 5. balance cars 6. guide rails 7. wheels 8. connecting rods 9. reducers 10. hinges 11. output shafts 12. cranks 13. forks 14. belts 15. motors 16. back shafts 17. polished rod eyes

Referring to accompanying drawing 1, shifting balance beam pumping unit of the present utility model comprises drive transmission device, crank 12, fork 13, connecting rod 8, walking beam 2, balance car 5, horse head 1, support 4 and support shaft 3; Walking beam 2 middle parts are articulated in support shaft 3 and back shaft 16; Polished rod eye 17 is arranged on the horse head 1, described drive transmission device is made up of motor 15, reducer 9, belt 14 and output shaft 11, its output shaft 11 connects described crank 12, it is characterized in that described walking beam 2 rear portions are provided with guide rail 6, the balance car 5 of belt wheel 7 is installed on this guide rail 6, balance car 5 can move forward and backward along guide rail 6, fixed mechanism (not shown) is arranged on the balance car 5, move to when needing the position at balance car 5, balance car 5 is fixed, and on balance car 5 weight is arranged.During use, drive transmission device drives crank 12 and rotates around output shaft 11 centers, and crank 12 drive forks 13 are done around back shaft 16 and swung up and down, and are fixed on 2 balance cars that are 5 and swing up and down with walking beam 2, play balanced action.When the down-hole magnitude of load changes, fixing balance car 5 is unclamped, be fixed again after moving to the desired position of balance, make oil pumper reach best balance.Because the travel mechanism that has adopted the counterweight weight can make and can adjust balance at any time, thereby reduce the energy consumption of oil pumper.

Claims

1. shifting balance beam pumping unit, it comprises drive transmission device, crank, fork, connecting rod, walking beam, balance car, horse head, support and support shaft and back shaft; The walking beam middle part is articulated in support shaft, polished rod eye is arranged on the horse head, described drive transmission device is made up of motor, reducer, belt and output shaft, and its output shaft connects described crank, it is characterized in that described walking beam rear portion is provided with guide rail, the balance car of belt wheel is installed on this guide rail, balance car can move forward and backward along guide rail, and fixed mechanism is arranged on the balance car, moves to when needing the position at balance car, balance car is fixed, and weight is arranged on balance car.