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CN-121993113-A - Stroke adjusting mechanism of oil pumping unit

CN121993113ACN 121993113 ACN121993113 ACN 121993113ACN-121993113-A

Abstract

The invention relates to a stroke adjusting mechanism of an oil pumping machine, which comprises an adjusting component (2) and an adjusting driving mechanism (3), wherein the adjusting component (2) comprises a screw rod (22) and a sliding block (23), the screw rod (22) is rotatably connected to a crank (1), a connecting shaft (231) hinged with the end part of a connecting rod is arranged on the sliding block (23), the adjusting driving mechanism (3) is connected with the screw rod (22) and transmits torque to the screw rod (22), and when the stroke of the oil pumping machine is required to be adjusted by the adjusting component (2) arranged on the crank, the adjusting driving mechanism (3) is clamped with the adjusting component (2), the screw rod (22) is driven to rotate to drive the sliding block (23) to move, so that the purpose of adjusting the stroke of the oil pumping machine is achieved, and the adjusting efficiency is improved.

Inventors

  • LOU ZHIDONG
  • JIANG SONG
  • ZHANG ZHIGANG
  • QI ZHANBAO
  • ZHAO HAITAO
  • HU YANJUN
  • Chang Xiukun
  • FENG LINGZHI
  • WANG YONGTAO
  • ZHANG LI
  • LI XUEMEI
  • REN YONGQING

Assignees

  • 大庆油田有限责任公司
  • 中国石油天然气股份有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (14)

  1. 1. A stroke adjustment mechanism for an oil pumping unit, comprising: An adjusting component (2) and an adjusting driving mechanism (3); the adjusting assembly (2) comprises a spiral transmission mechanism consisting of a screw rod (22) and a sliding block (23), the screw rod (22) is rotatably connected to the crank (1) along the length direction of the crank (1), and the sliding block (23) is provided with a connecting shaft (231) hinged with the end part of the connecting rod; the adjusting driving mechanism (3) is connected with the screw rod (22) and transmits torque to the screw rod (22).
  2. 2. The pumping unit stroking mechanism according to claim 1, wherein: The free end of the screw rod (22) is provided with a prismatic structure (221), and the adjusting driving mechanism (3) transmits torque to the screw rod (22) through the prismatic structure (221).
  3. 3. The pumping unit stroking mechanism according to claim 2, wherein: the crank (1) is provided with a chute (11) along the length direction, and the screw rod (22) is arranged in the chute (11) and is rotatably connected to the crank (1) through a fixing plate (21).
  4. 4. A pumping unit stroking mechanism according to claim 3, wherein: The head of the prismatic structure (221) is provided with a guiding inclined plane.
  5. 5. A pumping unit stroking mechanism according to any one of claims 1-4, wherein the adjustment drive mechanism (3) comprises: -a worm wheel and worm assembly (42), a worm wheel (422) in the worm wheel and worm assembly (42) being connected to a sleeve (423); The worm gear assembly (42) is connected with the screw rod (22) through the sleeve (423) and transmits torque to the screw rod (22).
  6. 6. The pumping unit stroking mechanism of claim 5, wherein: The sleeve (423) is an internally splined sleeve corresponding to the prismatic structure (221) of the screw (22).
  7. 7. The pumping unit stroking mechanism of claim 5, wherein: one worm (421) of the worm wheel and worm assembly (42) is meshed with two worm wheels (422), and torque is synchronously transmitted to screw rods (22) on two cranks (1) through the two worm wheels (422) at the same time.
  8. 8. The pumping unit stroking mechanism of claim 7, wherein: The worm (421) is rotatably connected to the housing (41), and the connecting shaft (43) of the turbine (422) is connected to the housing (41) through a bearing (44).
  9. 9. The pumping unit stroking mechanism of claim 7, wherein: The worm (421) is connected with the hand wheel (7).
  10. 10. The pumping unit stroking mechanism of claim 8, wherein: The housing (41) is connected to a support mechanism comprising support legs (33), the support legs (33) being connected to the housing (41) in a variable angle manner.
  11. 11. The pumping unit stroking mechanism of claim 10, wherein: The lower ends of the supporting legs (33) are connected with the base (32), and the bottom of the base (32) is connected with the roller.
  12. 12. The pumping unit stroking mechanism of claim 11, wherein: The adjusting driving mechanism (3) further comprises a rail (31), and the roller connected with the bottom of the base (32) corresponds to the rail (31).
  13. 13. The pumping unit stroking mechanism of claim 12, wherein: the tail end of the track (31) is provided with a clamping mechanism (6), and the clamping mechanism (6) is used for locking the adjusting driving mechanism (3).
  14. 14. The pumping unit stroking mechanism of claim 12, wherein: the tail end of the track (31) is provided with a limiting block (5) of the base (32).

Description

Stroke adjusting mechanism of oil pumping unit Technical Field The disclosure relates to the technical field of tertiary oil recovery in oilfield development, in particular to a polymer flooding post-oil layer chemical flooding tracking adjustment method. Background The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. When the stroke of the existing pumping unit is regulated, the crank pin is required to be pulled out firstly, then the connection position of the crank and the connecting rod is readjusted, the crank pin is inserted back to be fixed after the adjustment, and the two sides of the crank pin are required to be regulated respectively. It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present disclosure, and thus may contain information that does not constitute prior art. Disclosure of Invention In view of the above, the present disclosure provides a stroke adjusting mechanism of an oil pumping unit, which solves the problem that the current stroke adjusting operation of the oil pumping unit is time-consuming and labor-consuming. In order to achieve the above object, the stroke adjusting mechanism of the pumping unit comprises: an adjusting assembly and an adjusting drive mechanism; the adjusting component comprises a spiral transmission mechanism composed of a screw rod and a sliding block, the screw rod is rotatably connected to the crank along the length direction of the crank, and the sliding block is provided with a connecting shaft hinged with the end part of the connecting rod; The adjusting driving mechanism is connected with the screw rod and transmits torque to the screw rod. In the disclosed and possible embodiments, the free end of the screw is provided with a prismatic structure, and the adjustment driving mechanism transmits torque to the screw through the prismatic structure. In the disclosed and possible embodiments, a chute along the length direction of the crank is arranged on the crank, and the screw rod is arranged in the chute and is rotatably connected to the crank through a fixing plate. In this disclosure and in possible embodiments, the heads of the prismatic structures are provided with a guiding chamfer. In this disclosure and the possible embodiments, the adjustment drive mechanism includes: a worm gear assembly, a worm gear connection sleeve in the worm gear assembly; The worm gear assembly is connected with the screw rod through the sleeve and transmits torque to the screw rod. In this disclosure and in possible embodiments, the sleeve is an internally splined sleeve that corresponds to the prismatic structure of the lead screw. In this disclosure and possible embodiments, one worm of the worm gear and worm assembly engages two worm gears, through which torque is simultaneously transferred to the lead screw on both cranks. In this disclosure and in possible embodiments, the worm is rotatably connected to the housing, and the connection shaft of the turbine is connected to the housing through a bearing. In the present disclosure and possible embodiments, the worm is connected to a hand wheel. In this disclosure and in a possible embodiment, the housing is connected to a support mechanism that includes support legs that are connected to the housing in a variable angle manner. In the disclosed and possible embodiments, the lower ends of the supporting legs are connected with a base, and the bottom of the base is connected with a roller. In the disclosed and possible embodiments, the adjusting driving mechanism further comprises a rail, and the roller connected to the bottom of the base corresponds to the rail. In the disclosed and possible embodiments, the end of the track is provided with a clamping mechanism for locking the adjustment drive mechanism. In the present disclosure and possible embodiments, a stopper of the base is disposed at an end of the rail. The invention has the beneficial effects that: According to the stroke adjusting mechanism of the oil pumping machine, when the stroke of the oil pumping machine is required to be adjusted by arranging the adjusting component on the crank, the adjusting driving mechanism is clamped with the adjusting component and then drives the screw rod to rotate, so that the sliding block is driven to move, the purpose of adjusting the stroke of the oil pumping machine can be achieved, the adjusting efficiency is improved without a traditional pin pulling mode, and in addition, the adjusting range of the adjusting component is stepless, and is different from a traditional array pin shaft hole, so that the stroke of the oil pumping machine can be adjusted steplessly. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the desc