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Symmetric dual-cylinder gear and rack drive extended-range type hydraulic pumping unit

A technology of rack and pinion and program extension, which is applied in the direction of machine/engine, liquid variable capacity machinery, belt/chain/gear, etc. The effect of reducing costs and reducing energy consumption

Active Publication Date: 2020-05-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device realizes the range-extending function through a set of pulley system, and uses two sets of pulley mechanisms to realize the counterweight movement, the structure is complex, the life of the pulley system is low, and it is easy to wear

Method used

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  • Symmetric dual-cylinder gear and rack drive extended-range type hydraulic pumping unit
  • Symmetric dual-cylinder gear and rack drive extended-range type hydraulic pumping unit

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with drawings and embodiments.

[0018] like figure 1 and figure 2 As shown, the specific implementation includes a base 1, a frame 2, a first hydraulic cylinder 3, a central double-sided rack 4, a first lower gear 5, a first lower rack 6, a connecting piece 7, a pin 8, a first First upper gear 9, first upper rack 10, connecting piece 2 11, counterweight 12, second upper rack 13, second upper gear 14, pin 2 15, second lower rack 16, second lower gear 17. The second hydraulic cylinder 18 and the sucker rod 19.

[0019] Specifically, it is divided into base 1, frame 2, drive assembly, counterweight assembly and sucker rod 19; frame 2 is fixed on base 1, frame 2 includes two vertical rods, and two A central double-sided rack 4 is arranged between the vertical rods, both sides of the central double-sided rack 4 are rack structures, the lower end of the central double-sided rack 4 is fixedly connected t...

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PUM

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Abstract

The invention discloses a symmetric dual-cylinder gear and rack drive extended-range type hydraulic pumping unit. A rack is fixed to a base, a center dual-face toothed bar is arranged between two vertical rods of the rack, toothed bars are mounted on the two sides of the center dual-face toothed bar, the lower portion of the center dual-face toothed bar is connected with a pumping rod, a drive assembly is mounted on the bottom of the center dual-face toothed bar, a hydraulic cylinder is hinged to a lower gear, the two sides of the lower gear are connected with toothed bar structures of the center dual-face toothed bar, and lower toothed bars, the lower toothed bars are fixed to the side faces of the vertical rods of the rack, a balance weight assembly is mounted on the top of the center dual-face toothed bar, an upper gear is mounted on a first connecting part of the rack, the two sides of the upper gear are engaged with the toothed bar structures of the center dual-face rack and uppertoothed bars, the upper toothed bars are in sliding connection with the upper portions of the vertical rods of the rack, two upper toothed bars are fixedly connected with a second connecting part, and a balance weight is mounted on the second connecting part. The pumping unit has the advantages of being symmetric in whole structure, balanced in stress, long in service life, low in energy consumption, low in maintaining cost and the like, the size of the hydraulic cylinder is reduced while the long stroke motion of the pumping rod is met, and cost is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of oil pumping units, in particular to a symmetrical double-cylinder rack and pinion drive extended-range hydraulic pumping unit. Background technique [0002] At present, in the rod-type pumping oil production machinery and equipment, there are mainly beam pumping units, belt pumping units, hydraulic pumping units and the like. The beam pumping unit has the disadvantages of high energy consumption, short stroke, and large volume; the belt pumping unit has a complex structure and requires a reversing device, and there will be a large impact every time reversing; the hydraulic pumping unit has nearly ten A new type of pumping unit has appeared in the past few years, but it has not been widely used because of leakage in the hydraulic system, short life of the seal and high maintenance cost. [0003] Patent application number 200910300325.0 invented a double-cylinder symmetrical fully balanced hydraulic pumpin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00F04B47/14F16H19/04
CPCE21B43/121F04B47/14F16H19/04
Inventor 邱清盈杨超冯培恩陈秀明
Owner ZHEJIANG UNIV
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