WO2010111911A1 - Wheel pumping unit - Google Patents

Wheel pumping unit Download PDF

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Publication number
WO2010111911A1
WO2010111911A1 PCT/CN2010/071100 CN2010071100W WO2010111911A1 WO 2010111911 A1 WO2010111911 A1 WO 2010111911A1 CN 2010071100 W CN2010071100 W CN 2010071100W WO 2010111911 A1 WO2010111911 A1 WO 2010111911A1
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WO
WIPO (PCT)
Prior art keywords
wheel
counterweight
driving wheel
drive
sucker rod
Prior art date
Application number
PCT/CN2010/071100
Other languages
French (fr)
Chinese (zh)
Inventor
金成群
洪正录
Original Assignee
Jin Chengqun
Hong Zhenglu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jin Chengqun, Hong Zhenglu filed Critical Jin Chengqun
Publication of WO2010111911A1 publication Critical patent/WO2010111911A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive

Definitions

  • the present invention relates to an oil skimming apparatus, and more particularly to a wheeled oil pumping unit. Background technique
  • the common beam type pumping unit used in the oil field is replaced by a mechanical reversing mechanism of a four-bar linkage mechanism; for example, a CYJ type pumping unit.
  • the existing beam pumping unit has low commutation efficiency, large commutation impact, and difficulty in adjusting the stroke, and it is also difficult to adjust the balance. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a motor in which the motor is controlled by the electric control device, and the wheel-type pumping of the four-link reversing mechanism of the beam pumping unit is replaced by the forward and reverse commutation of the program.
  • the wheel type sucker rod and the counterweight are respectively suspended on the sides of the sky wheel to achieve static balance. Therefore, the wheel type pumping unit has high balance precision, high commutation efficiency, small commutation impact, and adjustable stroke. It is easy to punch.
  • the present invention provides a wheeled pumping unit comprising a support frame, a base, a sucker rod, a rod pulling rope, a counterweight, a counterweight traction rope, a driving wheel, a driving wheel frame, a power device
  • the electric control device is characterized in that: a top wheel is mounted on the top of the support frame, and the bottom of the support frame is mounted on the base, and the drive wheel frame is connected by a hinge shaft on the base, the drive wheel is mounted on the drive wheel frame, and the sucker rod is connected to the sky wheel
  • the counterweight is connected to the other side of the circumference of the crown wheel
  • the middle of the drive rope is fixed on the drive wheel
  • the two ends of the drive rope are wound in opposite directions on the drive wheels and are respectively connected to the sides of the circumference of the crown wheel
  • the power unit drives the drive wheel to rotate under the control of the electronic control unit.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 2 is a left side view of Figure 1;
  • Figure 3 is a schematic structural view of Embodiment 2 of the present invention
  • Figure 4 is a left side view of Figure 3.
  • a wheeled pumping unit includes a base 1, a hinge shaft 2, a drive wheel carrier 3, a brake 4, a first pulley 5, an electric motor 6, a sucker rod 7, and a suspension rope. 8, belt 9, oil rod traction rope 10, drive rope 11, support frame 12, sun gear shaft 13, small weight 14, nose wheel 15, positioner 16, counterweight traction rope 17, counterweight 18, drive wheel 19.
  • the second pulley 20, the drive axle 21, the electronically controlled refusal 22, the encoder 23, the balance wheel 15 is mounted on the support frame 12 via the sunroof shaft 13, the support frame 12 is in turn mounted on the base 1, and the drive wheel 19 is driven through the axle 21 is mounted on the drive wheel frame 3, the drive wheel frame 3 is mounted on the base 1 through the hinge shaft 2, and the sucker rod 7 is connected to the side of the circumference of the balance wheel 15 by the suspension rod 8 and the oil rod traction rope 10
  • the counterweight 18 is connected to the other side of the circumference of the crown 15 by the counterweight traction rope 17, and the middle of the drive rope 11 is fixed to the drive wheel 19, and the two ends of the drive rope 11 are wound around the drive wheel 19 in opposite directions, respectively.
  • the power unit includes an electric motor 6, a first pulley 5, a second pulley 20, a belt 9, a motor 6 mounted on the drive wheel frame 3, a first pulley 5 mounted on the motor output shaft, and a second pulley 20 mounted on the drive axle 21,
  • the belt 9 connects the first pulley 5 and the second pulley 20.
  • the second pulley 20 is coaxial or otherwise coupled to the drive wheel 19 to cause the drive wheel 19 to rotate as the second pulley 20 rotates.
  • the power unit is not limited to being driven by a belt, and the transmission of power can be realized by other means, for example, power can be transmitted through a transmission chain, a gear, or the like.
  • the electronic control unit includes an electronically controlled reject 22 and an encoder 23, which are connected to the motor 6 and the positioner 16, respectively.
  • the encoder 23 can be used to set a predetermined program to cause the motor 6 to perform a rotational motion in a predetermined direction by a predetermined program by the electronically controlled rejection 22.
  • the positioner 16 is fixed to the support frame 12 and opposed to the wheel circumference of the balance wheel 15, and functions to output a predetermined signal to the encoder 23 when the day wheel 15 is rotated to a predetermined position;
  • the predetermined signal output from the bit 16 controls the operating state of the motor 6.
  • the electronic control device is not limited to including the electronic control 22 and the encoder 23, can also include the operation panel or other settings for easy operation and control.
  • the electric control device can rotate the motor 6 in forward and reverse directions in a predetermined order, thereby driving the driving wheel 19 to perform forward and reverse rotation in a predetermined order; and then driving the sky wheel 15 to The predetermined sequence is rotated in the forward and reverse directions to realize the reversing operation of the sucker rod.
  • the drive wheel 19 can maintain the drive rope 11 at a predetermined tension, and the tension of the drive line 11 is adjusted by the weight of the drive wheel 19,
  • the structure is simple and reliable, and the tension is adjusted by the weight of the machine itself, and at the same time, the commutation impact of the whole machine is eliminated.
  • an adjustment mechanism can be provided to adjust the position of the hinge shaft 2, thereby adjusting the tension of the drive rope 11, and improving the adaptability of the wheel pumping unit.
  • the small counterweight 14 is mounted on the inner side of the balance wheel 15, and its different spatial position can generate different moments for the balance wheel 15, thereby greatly reducing the commutation shock and the commutation current, resulting in a large energy saving effect.
  • this wheeled pumping unit greatly simplifies the structure of complex machines, greatly reduces the cost of machine manufacturing, and the manufacturing process is simple, while bringing great energy saving, greatly saving steel, and making various technical parameters.
  • the adjustment is easier, the use is simpler and more convenient, and it can be adjusted completely with the remote control, so it is especially safe.
  • Embodiment 2 differs from Embodiment 1 in that: in the wheel type pumping unit provided in Embodiment 2, the weight 18 is fixed to the crown 15 by the rocker arm 24, so that there is no weight traction rope 17 And the small weight 14, the other is exactly the same as in the first embodiment.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A wheel pumping unit includes a support frame (12), a base (1), a sucker rod (7), a traction rope (10) for the sucker rod, a counterweight (18), a traction rope (17) for the counterweight, a driving wheel (19), a driving wheel bracket (3), a power unit and an electronic control device (22). A head pulley (15) is provided on the top part of the support frame and the bottom part of the support frame is mounted on the base; the driving wheel is mounted on the driving wheel bracket which is connected with the base by a hinge shaft (2). A side of the circumference of the head pulley is connected to the sucker rod and another side of the head pulley is connected to the counterweight; the middle part of a driving rope (11) is fixed on the driving wheel, and two ends thereof are wound around the driving wheel from opposite directions and respectively connected to either side of the circumference of the head pulley. Controlled by an electronic control device program, a forward-backward direction-reversing method provided by a motor (6) of the power unit replaces the reversing method provided by a four-bar linkage reversing mechanism of a beam pumping unit, and the sucker rod and the counterweight are respectively hung on the two sides of the head pulley to achieve static balance. Therefore, the pumping unit has high balance precision and reversing efficiency, low reversing vibration, and allows for easy adjustment of the length and number of strokes.

Description

轮式抽油机  Wheel pumping unit
本申请要求于 2009 年 04 月 01 日提交中国专利局、 申请号为 200910066733.4、 发明名称为"轮式抽油机"的中国专利申请的优先权， 其 全部内容通过引用结合在本申请中。 技术领域  The present application claims priority to Chinese Patent Application No. 200910066733.4, the entire disclosure of which is incorporated herein by reference. Technical field
本发明涉及釆油装置， 尤其是涉及一种轮式抽油机。 背景技术  The present invention relates to an oil skimming apparatus, and more particularly to a wheeled oil pumping unit. Background technique
目前油田常用的游梁式抽油机换向全靠四连杆机构的机械式换向机 构； 如 CYJ型抽油机。 现有游梁式抽油机换向效率低、 换向冲击大、 调冲 程的难度很大， 并且调平衡的难度也很大。 发明内容  At present, the common beam type pumping unit used in the oil field is replaced by a mechanical reversing mechanism of a four-bar linkage mechanism; for example, a CYJ type pumping unit. The existing beam pumping unit has low commutation efficiency, large commutation impact, and difficulty in adjusting the stroke, and it is also difficult to adjust the balance. Summary of the invention
因此， 本发明所要解决的技术问题是提供一种电动机在电控装置的控 制下， 按着程序正、 反换向的方式代替游梁式抽油机四连杆换向机构的轮 式抽油机， 该轮式抽油机抽油杆和配重分别挂在天轮两侧的方式实现静态 平衡， 因此该轮式抽油机平衡精度高， 换向效率高， 换向冲击小， 调冲程、 冲次容易。  Therefore, the technical problem to be solved by the present invention is to provide a motor in which the motor is controlled by the electric control device, and the wheel-type pumping of the four-link reversing mechanism of the beam pumping unit is replaced by the forward and reverse commutation of the program. The wheel type sucker rod and the counterweight are respectively suspended on the sides of the sky wheel to achieve static balance. Therefore, the wheel type pumping unit has high balance precision, high commutation efficiency, small commutation impact, and adjustable stroke. It is easy to punch.
为解决上述技术问题， 本发明提供一种轮式抽油机， 包括支承架、 底 座、 抽油杆、 油杆牵引绳、 配重、 配重牵引绳、 驱动轮、 驱动轮架、 动力 装置、 电控装置， 其特征在于： 支承架顶端安装有天轮， 支承架底部安装 在底座上， 底座上通过铰链轴连接驱动轮架， 驱动轮安装在驱动轮架上， 抽油杆连接到天轮轮周的一侧， 配重连接到天轮轮周的另一侧， 驱动绳中 间固定在驱动轮上， 驱动绳两端以相反方向缠绕于驱动轮并各自连接到天 轮轮周的两侧； 所述动力装置在所述电控装置的控制下驱动所述驱动轮旋 转。 附图说明  In order to solve the above technical problems, the present invention provides a wheeled pumping unit comprising a support frame, a base, a sucker rod, a rod pulling rope, a counterweight, a counterweight traction rope, a driving wheel, a driving wheel frame, a power device, The electric control device is characterized in that: a top wheel is mounted on the top of the support frame, and the bottom of the support frame is mounted on the base, and the drive wheel frame is connected by a hinge shaft on the base, the drive wheel is mounted on the drive wheel frame, and the sucker rod is connected to the sky wheel On one side of the wheel circumference, the counterweight is connected to the other side of the circumference of the crown wheel, the middle of the drive rope is fixed on the drive wheel, and the two ends of the drive rope are wound in opposite directions on the drive wheels and are respectively connected to the sides of the circumference of the crown wheel The power unit drives the drive wheel to rotate under the control of the electronic control unit. DRAWINGS
图 1是本发明实施例 1的结构示意图；  1 is a schematic structural view of Embodiment 1 of the present invention;
图 2是图 1的左视图；  Figure 2 is a left side view of Figure 1;
图 3是本发明实施例 2的结构示意图； 图 4是图 3的左视图。 Figure 3 is a schematic structural view of Embodiment 2 of the present invention; Figure 4 is a left side view of Figure 3.
具体实施方式 detailed description
实施例 1  Example 1
参照图 1、 图 2, 本发明实施例一提供的轮式抽油机包括底座 1、 铰链 轴 2、 驱动轮架 3、 制动器 4、 第一皮带轮 5、 电动机 6、 抽油杆 7、 悬绳器 8、皮带 9、 油杆牵引绳 10、驱动绳 11、 支承架 12、 天轮轴 13、 小配重 14、 天轮 15、测位器 16、 配重牵引绳 17、 配重 18、驱动轮 19、第二皮带轮 20、 驱动轮轴 21、 电控拒 22、 编码器 23 , 天轮 15通过天轮轴 13安装在支承 架 12上， 支承架 12又安装在底座 1上， 驱动轮 19通过驱动轮轴 21安装 在驱动轮架 3上， 驱动轮架 3通过铰链轴 2安装在底座 1上， 抽油杆 7通 过悬绳器 8和油杆牵引绳 10连到天轮 15轮周的一侧，而配重 18通过配重 牵引绳 17连接到天轮 15轮周的另一侧， 驱动绳 11 的中间固定在驱动轮 19上， 而驱动绳 11的两端分别按着相反方向缠绕驱动轮 19几圈后连到天 轮 15轮周的两侧上。 当驱动绳 11由皮带替代时， 则皮带两端分别连在天 轮 15轮周的两侧上， 然后用驱动轮 19带动皮带传动。  Referring to Figures 1 and 2, a wheeled pumping unit according to a first embodiment of the present invention includes a base 1, a hinge shaft 2, a drive wheel carrier 3, a brake 4, a first pulley 5, an electric motor 6, a sucker rod 7, and a suspension rope. 8, belt 9, oil rod traction rope 10, drive rope 11, support frame 12, sun gear shaft 13, small weight 14, nose wheel 15, positioner 16, counterweight traction rope 17, counterweight 18, drive wheel 19. The second pulley 20, the drive axle 21, the electronically controlled refusal 22, the encoder 23, the balance wheel 15 is mounted on the support frame 12 via the sunroof shaft 13, the support frame 12 is in turn mounted on the base 1, and the drive wheel 19 is driven through the axle 21 is mounted on the drive wheel frame 3, the drive wheel frame 3 is mounted on the base 1 through the hinge shaft 2, and the sucker rod 7 is connected to the side of the circumference of the balance wheel 15 by the suspension rod 8 and the oil rod traction rope 10 The counterweight 18 is connected to the other side of the circumference of the crown 15 by the counterweight traction rope 17, and the middle of the drive rope 11 is fixed to the drive wheel 19, and the two ends of the drive rope 11 are wound around the drive wheel 19 in opposite directions, respectively. After the circle, connect to the two sides of the 15 rounds of the Tianlun. When the drive rope 11 is replaced by a belt, both ends of the belt are respectively attached to both sides of the circumference of the 15 rounds of the wheel, and then the belt drive is driven by the drive wheels 19.
动力装置包括电动机 6、 第一皮带轮 5、 第二皮带轮 20、 皮带 9、 电动 机 6安装在驱动轮架 3上， 电动机输出轴上安装第一皮带轮 5 , 第二皮带 轮 20安装在驱动轮轴 21上， 皮带 9连接第一皮带轮 5和第二皮带轮 20。 第二皮带轮 20与驱动轮 19 同轴或以其他方式相连， 以在第二皮带轮 20 旋转时， 带动驱动轮 19旋转。 另外， 动力装置中不限于通过皮带传动， 也 可以釆用其他方式实现动力的传递， 比如说： 可以通过传动链、 齿轮等方 式传递动力。  The power unit includes an electric motor 6, a first pulley 5, a second pulley 20, a belt 9, a motor 6 mounted on the drive wheel frame 3, a first pulley 5 mounted on the motor output shaft, and a second pulley 20 mounted on the drive axle 21, The belt 9 connects the first pulley 5 and the second pulley 20. The second pulley 20 is coaxial or otherwise coupled to the drive wheel 19 to cause the drive wheel 19 to rotate as the second pulley 20 rotates. In addition, the power unit is not limited to being driven by a belt, and the transmission of power can be realized by other means, for example, power can be transmitted through a transmission chain, a gear, or the like.
电控装置包括电控拒 22和编码器 23 , 电控拒 22分别与电动机 6和测 位器 16相连。编码器 23能够用于设定预定的程序， 以通过电控拒 22使电 动机 6以预定的程序进行预定方向的旋转运动。 测位器 16与支承架 12固 定， 并与天轮 15的轮周相对， 其作用在于， 在天轮 15旋转到预定位置时， 向编码器 23输出预定信号；在编码器 23才艮据测位器 16输出的预定信号控 制电动机 6的运转状态。另外， 电控装置也不限于包括电控拒 22和编码器 23 , 也可以包括操作面板或其他设定部分， 以方便操作和控制。 The electronic control unit includes an electronically controlled reject 22 and an encoder 23, which are connected to the motor 6 and the positioner 16, respectively. The encoder 23 can be used to set a predetermined program to cause the motor 6 to perform a rotational motion in a predetermined direction by a predetermined program by the electronically controlled rejection 22. The positioner 16 is fixed to the support frame 12 and opposed to the wheel circumference of the balance wheel 15, and functions to output a predetermined signal to the encoder 23 when the day wheel 15 is rotated to a predetermined position; The predetermined signal output from the bit 16 controls the operating state of the motor 6. In addition, the electronic control device is not limited to including the electronic control 22 and the encoder 23, can also include the operation panel or other settings for easy operation and control.
其工作原理是： 电控装置能够使电动机 6以预定的顺序进行正向、 反 向的旋转， 从而通过带动驱动轮 19以预定的顺序进行正向、 反向的旋转； 进而带动天轮 15以预定的顺序进行正向、反向的旋转， 实现抽油杆的换向 运行。  The working principle is as follows: The electric control device can rotate the motor 6 in forward and reverse directions in a predetermined order, thereby driving the driving wheel 19 to perform forward and reverse rotation in a predetermined order; and then driving the sky wheel 15 to The predetermined sequence is rotated in the forward and reverse directions to realize the reversing operation of the sucker rod.
由于驱动轮架 3通过铰链轴 2连接到底座 1上， 因此，驱动轮 19能够 使驱动绳 11保持预定的张紧力， 靠驱动轮 19的重量大小来调节驱动绳 11 的张紧力， 其结构简单、 可靠， 而且靠机器自身重量调节张紧力， 同时起 消除整机的换向冲击作用。 另外， 还可以设置调整机构， 以调整铰链轴 2 的位置， 进而调整驱动绳 11的张紧力， 提高轮式抽油机的适应性能。  Since the drive wheel frame 3 is coupled to the base 1 via the hinge shaft 2, the drive wheel 19 can maintain the drive rope 11 at a predetermined tension, and the tension of the drive line 11 is adjusted by the weight of the drive wheel 19, The structure is simple and reliable, and the tension is adjusted by the weight of the machine itself, and at the same time, the commutation impact of the whole machine is eliminated. In addition, an adjustment mechanism can be provided to adjust the position of the hinge shaft 2, thereby adjusting the tension of the drive rope 11, and improving the adaptability of the wheel pumping unit.
小配重 14安装在天轮 15的内侧， 它在空间位置的不同能够对天轮 15 产生不同的力矩，从而大大减小换向冲击和换向电流，产生较大节能效果。  The small counterweight 14 is mounted on the inner side of the balance wheel 15, and its different spatial position can generate different moments for the balance wheel 15, thereby greatly reducing the commutation shock and the commutation current, resulting in a large energy saving effect.
总而言之， 本轮式抽油机大大地简化了复杂机器的结构、 大大降低了 机器制造成本， 而且制造工艺也简单了， 同时带来大节能、 大大节省钢材 的效果， 并使各项技术参数的调节更加容易， 使用更加简单、 方便， 而且 可以完全用遥控器调节， 因此特别安全。  All in all, this wheeled pumping unit greatly simplifies the structure of complex machines, greatly reduces the cost of machine manufacturing, and the manufacturing process is simple, while bringing great energy saving, greatly saving steel, and making various technical parameters. The adjustment is easier, the use is simpler and more convenient, and it can be adjusted completely with the remote control, so it is especially safe.
实施例 2  Example 2
参照图 3、 图 4, 实施例 2与实施例 1区别在于： 实施例 2提供的轮式 抽油机中， 配重 18通过摇臂 24固定到天轮 15上， 因此没有配重牵引绳 17和小配重 14, 其它与实施例 1完全相同。  Referring to Figures 3 and 4, Embodiment 2 differs from Embodiment 1 in that: in the wheel type pumping unit provided in Embodiment 2, the weight 18 is fixed to the crown 15 by the rocker arm 24, so that there is no weight traction rope 17 And the small weight 14, the other is exactly the same as in the first embodiment.

Claims

权 利 要 求 Rights request
1、 一种轮式抽油机， 包括支承架、 底座、 抽油杆、 油杆牵引绳， 其特 征在于： 还包括配重、 配重牵引绳、 驱动轮、 驱动轮架、 动力装置、 电控 装置， 所述支承架安装在底座上， 顶端安装有天轮； 所述驱动轮架通过铰 链轴连接底座上， 所述驱动轮安装在驱动轮架上， 抽油杆连接到天轮轮周 的一侧， 配重通过配重牵引绳连接到天轮轮周的另一侧， 驱动绳中间固定 在驱动轮上， 驱动绳两端以相反方向缠绕于驱动轮后， 各自连接到天轮轮 周的两侧； 所述动力装置在所述电控装置的控制下驱动所述驱动轮旋转。  1. A wheeled pumping unit comprising a support frame, a base, a sucker rod, and a rod pulling rope, characterized in that: further comprising a counterweight, a counterweight traction rope, a driving wheel, a driving wheel frame, a power device, and an electric Control device, the support frame is mounted on the base, and the top end is mounted with a sky wheel; the drive wheel frame is connected to the base through a hinge shaft, the drive wheel is mounted on the drive wheel frame, and the sucker rod is connected to the circumference of the crown wheel On one side, the counterweight is connected to the other side of the circumference of the crown wheel by a counterweight traction rope, and the drive rope is fixed on the drive wheel in the middle, and the two ends of the drive rope are wound in the opposite direction behind the drive wheel, and are respectively connected to the crown wheel. Both sides of the circumference; the power unit drives the drive wheel to rotate under the control of the electronic control unit.
PCT/CN2010/071100 2009-04-01 2010-03-17 Wheel pumping unit WO2010111911A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910066733.4 2009-04-01
CN2009100667334A CN101514620B (en) 2009-04-01 2009-04-01 Wheel type oil pumping unit

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WO2010111911A1 true WO2010111911A1 (en) 2010-10-07

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CN113802999A (en) * 2021-11-16 2021-12-17 智慧猫(东营)智能科技有限公司 Rolling and releasing synchronous type oil pumping machine hair braid lifting and replacing equipment

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CN101514620B (en) * 2009-04-01 2012-08-15 金成群 Wheel type oil pumping unit
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WO2017124857A1 (en) * 2016-01-22 2017-07-27 金成群 Balanced tower oil pumping machine
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CN1089139C (en) * 1998-11-10 2002-08-14 燕山大学 Full-balanced long-stroke pumping unit with flexible drive parts
CN2453154Y (en) * 2000-11-09 2001-10-10 韩晗 Program-controlled oil-pumping installation
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CN2856408Y (en) * 2005-11-14 2007-01-10 黄绍业 Top-wheel pumping unit having simple reduction driving gear
CN101514620A (en) * 2009-04-01 2009-08-26 金成群 Wheel type oil pumping unit
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CN102518413A (en) * 2011-12-29 2012-06-27 天津机电职业技术学院 Two-stage planetary reduction pumping unit with built-in winding drum
CN102518413B (en) * 2011-12-29 2015-01-07 天津机电职业技术学院 Two-stage planetary reduction pumping unit with built-in winding drum
CN113802999A (en) * 2021-11-16 2021-12-17 智慧猫(东营)智能科技有限公司 Rolling and releasing synchronous type oil pumping machine hair braid lifting and replacing equipment
CN113802999B (en) * 2021-11-16 2022-02-08 智慧猫(东营)智能科技有限公司 Rolling and releasing synchronous type oil pumping machine hair braid lifting and replacing equipment

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