Transmission mechanism for oil pumping unit

Abstract

The invention provides a transmission mechanism for an oil pumping unit, which comprises a driving mechanism and a transmission mechanism connected to an output shaft of the driving mechanism, the transmission mechanism comprises a first synchronous pulley, a transmission belt and a second synchronous pulley, and the first synchronous pulley is fixed on the output shaft of the driving mechanism and is connected with the second synchronous pulley through the transmission belt; the transmission mechanism further comprises a speed reducer, a gear, a rack and a rack frame, the second synchronous belt wheel is fixed to an input shaft of the speed reducer, the gear is fixed to an output shaft of the speed reducer, meshed with the rack and capable of driving the rack to move in the vertical direction, and the rack is fixedly connected with the rack frame. According to the transmission mechanism, the running speed of the rack and the rack frame can be reduced, meanwhile, the torque is increased, large-load and low-stroke-frequency operation of the transmission mechanism for the oil pumping unit is achieved, and the mining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drill rod coating thermal insulation testing, in particular to a transmission mechanism for an oil pumping unit. Background Art

[0002] Oil production in oil fields can be categorized into deep-well and shallow-well operations based on well depth. Deep-well production typically utilizes submersible electric pumps, but these pumps often have short operating cycles and are difficult to operate, severely impacting efficiency and increasing costs. Shallow-well production primarily utilizes beam pumping units, which offer advantages such as long life and high reliability. Specifically, the unit is installed on the ground and connected to a sucker rod, which is then connected to a pump. Oil is then extracted by activating the pump. However, in the later stages of development, as production declines, pumping units gradually exhibit low oil recovery efficiency and high motor energy consumption, resulting in significant waste of resources and energy.

[0003] When using a pumping unit for shallow well oil production, the rod string is easily broken due to its large starting torque and heavy load at the suspension point. When using a pumping unit for deep well oil production, the load at the suspension point will increase significantly, which can easily cause the rod string to break.

[0004] In summary, the existing transmission mechanism for oil pumping units has the disadvantages of low efficiency, high energy consumption, large starting torque, and easy breakage of the rod column. Summary of the Invention

[0005] One purpose of the present invention is to provide a transmission mechanism for an oil pumping unit, which can reduce the operating speed of the rack and rack frame while increasing the torque, thereby enabling the transmission mechanism for the oil pumping unit to achieve high-load, low-stroke operation and improve mining efficiency.

[0006] According to the present invention, a transmission mechanism is provided, including a driving mechanism and a transmission mechanism connected to the output shaft of the driving mechanism, the transmission mechanism including: a first synchronous pulley, a transmission belt and a second synchronous pulley, wherein the first synchronous pulley is fixed to the output shaft of the driving mechanism and is connected to the second synchronous pulley via the transmission belt; the transmission mechanism also includes a reducer, a gear, a rack and a rack frame, the second synchronous pulley is fixed to the input shaft of the reducer, the gear is fixed to the output shaft of the reducer, and is engaged with the rack and can drive the rack to move in a vertical direction, and the rack is fixedly connected to the rack frame.

[0007] In a preferred embodiment, the rack is configured in an elongated ring shape.

[0008] In a preferred embodiment, the driving mechanism adopts a bidirectional motor.

[0009] In a preferred embodiment, the transmission mechanism for the oil pumping unit further includes a rocker frame, a pin hole is provided at the bottom of the rocker frame, a pin shaft is provided inside the pin hole, and the rocker frame can rotate around the pin shaft.

[0010] In a preferred embodiment, there is an intermediate panel between the two parallel straight rack parts of the rack, and a plurality of fixing pins in contact with the straight rack parts are arranged at intervals on the intermediate panel. The rack is fixedly connected to the rack frame through the fixing pins.

[0011] In a preferred embodiment, the transmission mechanism for the oil pumping unit further includes a bracket and a fixing member, and the driving mechanism is fixed above the bracket via the fixing member.

[0012] In a preferred embodiment, the fixing member is a threaded member.

[0013] In a preferred embodiment, the transmission mechanism for the oil pumping unit further includes a frame mechanism, and the frame mechanism includes a rocker base, and the rocker frame is connected to the rocker base via the pin shaft.

[0014] In a preferred embodiment, the frame mechanism further includes a fuselage, the rocker base is fixed on the fuselage, and the rack frame is arranged inside the fuselage.

[0015] In a preferred embodiment, the frame mechanism further includes a body base, and the body is fixed on the body base.

[0016] The present invention includes a driving mechanism and a transmission mechanism connected to the output shaft of the driving mechanism, and the transmission mechanism includes a first synchronous pulley, a transmission belt and a second synchronous pulley, the first synchronous pulley is fixed on the output shaft of the driving mechanism and connected to the second synchronous pulley through the transmission belt, the transmission mechanism also includes a reducer, a gear, a rack and a rack frame, the second synchronous pulley is fixed on the input shaft of the reducer, and the gear is fixed on the output shaft of the reducer and meshes with the rack, and can drive the rack to move in the vertical direction, the rack is fixedly connected to the rack frame, so that the rotational motion of the output shaft of the driving mechanism can be converted into the up and down reciprocating motion of the rack frame through the transmission mechanism, during the oil production process, the running speed of the rack and the rack frame can be reduced, and the torque thereof can be increased, so that the transmission mechanism of the oil pumping unit can achieve large load and low stroke operation, thereby improving the production efficiency.

[0017] In the present invention, the rack is configured in an elongated ring shape, so that the gear can drive the rack to reciprocate in the vertical direction, thereby driving the rack frame to reciprocate in the vertical direction.

[0018] The present invention adopts a bidirectional motor through the driving mechanism, and can change the direction of the output shaft of the driving mechanism so that the gear can drive the rack to reciprocate in the vertical direction, thereby driving the rack frame to reciprocate in the vertical direction.

[0019] The present invention comprises a swing arm frame with a pin hole at its bottom, a pin shaft disposed within the pin hole, and the swing arm frame capable of rotating about the pin shaft. When the swing arm frame moves along the top and bottom semicircular ends of a long annular rack, a gear drives the swing arm frame to rotate about its bottom pin shaft, thereby changing the direction of motion of the rack frame. This enables the transmission mechanism of the gear-long annular rack pumping unit to operate with high loads and low strokes.

[0020] The present invention further comprises a fuselage through a frame mechanism, a swing arm base is fixed on the fuselage, and a rack frame is arranged inside the fuselage, so that the rack frame can be effectively protected by the fuselage to prevent the rack frame from being bumped.

[0021] The present invention further includes a fuselage base through the frame mechanism, and the fuselage is fixed on the fuselage base, so that the fuselage can be supported by the fuselage base. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure diagram of the driving mechanism and the transmission mechanism of the transmission mechanism for the oil pumping unit according to the present invention is schematically shown;

[0023] Figure 2 The overall structural diagram of the transmission mechanism for the oil pumping unit according to the present invention is schematically shown.

[0024] In this application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn to scale. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other in any way.

[0026] In the description of the present invention, it should be understood that the terms "inside" and "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly defined.

[0028] In the present invention, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] like Figure 1 and Figure 2 As shown, the transmission mechanism 100 for an oil pumping unit according to the present invention includes a drive mechanism 1 and a transmission mechanism 2 connected to the output shaft of the drive mechanism 1. Optionally, the drive mechanism 1 can be a drive motor having an output shaft. The transmission mechanism 2 includes: a first synchronous pulley 21, a transmission belt 22, and a second synchronous pulley 23. The first synchronous pulley 21 is fixedly mounted on the output shaft of the drive mechanism 1 and connected to the second synchronous pulley 23 via the transmission belt 22. Optionally, the transmission belt 22 can be a belt. The output shaft of the drive mechanism 1 can rotate to drive the first synchronous pulley 21, and the first synchronous pulley 21 can then rotate the second synchronous pulley 23 via the transmission belt 22. The transmission mechanism 2 also includes a reducer 24, a gear 25, an annular rack 26 and a rack frame 4. The reducer 24 has an input shaft, an output shaft and a plurality of reducer gears meshing with the input shaft and the output shaft. The input shaft of the reducer 24 can drive the output shaft of the reducer 24 to rotate through the reducer gear. The second synchronous pulley 23 is fixed on the input shaft of the reducer 24, the gear 25 is fixed on the output shaft of the reducer 24 and meshes with the rack 26, and the rack 26 is fixedly connected to the rack frame 4.

[0030] The rotation of the second synchronous pulley 23 can drive the input shaft of the reducer 24 to rotate, and the input shaft of the reducer 24 can then drive the output shaft of the reducer 24 to rotate, and the output shaft of the reducer 24 can then drive the gear 25 to rotate, and the gear 25 can then drive the rack 26 to move back and forth in the vertical direction.

[0031] The present invention includes a drive mechanism 1 and a transmission mechanism 2 connected to the output shaft of the drive mechanism 1, and the transmission mechanism 2 includes a first synchronous pulley 21, a transmission belt 22 and a second synchronous pulley 23. The first synchronous pulley 21 is fixed on the output shaft of the drive mechanism 1 and connected to the second synchronous pulley 23 through the transmission belt 22. The transmission mechanism 2 also includes a reducer 24, a gear 25, a rack 26 and a rack frame 4. The second synchronous pulley 23 is fixed on the input shaft of the reducer 24, and the gear 25 is fixed on the output shaft of the reducer 24 and meshes with the rack 26, and can drive the rack 26 to move in the vertical direction. The rack 26 is fixedly connected to the rack frame 4, so that the rotational motion of the output shaft of the drive mechanism 1 can be converted into the up and down reciprocating motion of the rack frame 4 through the transmission mechanism 2. During the oil production process, the gear 25 can be engaged with the rack 26 to reduce the running speed of the rack 26 and the rack frame 4, thereby increasing their torque, so that the transmission mechanism of the pumping unit can achieve high load and low stroke operation, thereby improving the production efficiency.

[0032] In one or more embodiments, the rack 26 of the present invention is configured in an elongated ring shape. Specifically, the rack 26 includes two parallel straight rack portions and two semicircular rack portions connecting the ends of the straight rack portions. In this embodiment, the drive mechanism 1 can use a unidirectional motor.

[0033] In the present invention, the rack 26 is configured in an elongated ring shape, so that the gear 25 can drive the rack 26 to reciprocate in the vertical direction, thereby driving the rack frame 4 to reciprocate in the vertical direction.

[0034] In one or more embodiments, the driving mechanism 1 adopts a bidirectional motor.

[0035] The present invention adopts a bidirectional motor through the drive mechanism 1, and can change the direction of the output shaft of the drive mechanism 1 so that the gear 25 can drive the rack 26 to reciprocate in the vertical direction, thereby driving the rack frame 4 to reciprocate in the vertical direction.

[0036] In one or more embodiments, there is an intermediate panel between the two parallel straight rack portions of the rack 26, and a plurality of fixing pins 3 in contact with the straight rack portions are arranged at intervals on the intermediate panel surface of the rack 26. The rack 26 is fixedly connected to the rack frame 4 through the fixing pins 3.

[0037] In one or more embodiments, the transmission mechanism 100 for a pumping unit according to the present invention further includes a rocker arm 7 mounted on the outer frame of the pumping unit. A pin hole is defined at the bottom of the rocker arm 7, within which a pin is disposed, enabling the rocker arm 7 to rotate about the pin. Specifically, a reducer 24 is mounted above the rocker arm 7, with a gear 25 disposed thereon. A mounting hole is defined at the bottom of the rocker arm 7, and a corresponding mounting hole is also defined at the bottom of the outer frame of the pumping unit. The pin passes through the mounting hole to connect the rocker arm 7 to the frame. Gear 25 meshes with an elongated ring rack 26. When gear 25 is positioned on different sides of the elongated ring rack 26, the direction of movement of the rack 26 can be changed, while the direction of rotation of gear 25 remains unchanged. When gear 25 moves from the left side to the right side of the elongated ring rack 26, or vice versa, it drives the rocker arm 7 to rotate about the pin at its bottom, causing the position of gear 25 to change accordingly.

[0038] The present invention includes a rocker frame 7 mounted on the outer frame of the pumping unit. The rocker frame 7 has a pin hole at its bottom, a pin shaft disposed within the pin hole, and the rocker frame is capable of rotating about the pin shaft. As the rocker frame moves along the top and bottom semicircular ends of the long annular rack 26, the gear 25 drives the rocker frame 7 to rotate about its bottom pin shaft 8, thereby changing the direction of motion of the rack frame 4. This enables high-load, low-stroke operation of the gear-long annular rack transmission mechanism for the pumping unit.

[0039] In one or more embodiments, the transmission mechanism 100 for the oil pumping unit of the present invention further includes a bracket 6 and a fixing member, and the driving mechanism 1 is fixed above the bracket 6 via the fixing member.

[0040] In one or more embodiments, the fixing member is a screw member.

[0041] In one or more embodiments, the bracket 6 is fixed to the side of the rocker frame 7, and the reducer 24 is fixed above the rocker frame 7. Optionally, the bracket 6 is fixed to the side of the rocker frame 7 by welding. The reducer 24 is fixed to the top of the rocker frame 7 by welding.

[0042] In one or more embodiments, the transmission mechanism 100 for the oil pumping unit of the present invention further includes a frame mechanism 9, which includes a rocker base 91. The rocker frame 9 is rotatably connected to the rocker base 91. Specifically, the rocker frame 9 is rotatably connected to the rocker base 91 via a pin 8.

[0043] In one or more embodiments, the frame mechanism 9 further includes a body 92, the rocker base 91 is fixed to the body 92, and the rack frame 4 is disposed inside the body 92. Optionally, the rocker base 91 is fixed to the body 92 by welding.

[0044] The present invention includes a frame mechanism 9 further comprising a body 92 , a rocker base 91 fixed on the body 92 , and a rack frame 4 disposed inside the body 92 . The rack frame 4 can be effectively protected by the body 92 to prevent the rack frame 4 from being bumped.

[0045] In one or more embodiments, the frame mechanism 9 further includes a body base 93, and the body 92 is fixed on the body base 93. Optionally, the body 92 is fixed on the body base 93 by welding.

[0046] The present invention further includes a body base 93 through the frame mechanism 9 and the body 92 is fixed on the body base 93 , and the body 92 can be supported by the body base 93 .

[0047] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A transmission mechanism for an oil pumping unit, comprising a drive mechanism and a transmission mechanism connected to an output shaft of the drive mechanism. The transmission mechanism comprises: A first synchronous pulley, a transmission belt, and a second synchronous pulley, wherein the first synchronous pulley is fixed to the output shaft of the driving mechanism and is connected to the second synchronous pulley via the transmission belt; The transmission mechanism also includes a reducer, a gear, a rack and a rack frame. The second synchronous pulley is fixed on the input shaft of the reducer. The gear is fixed on the output shaft of the reducer and is engaged with the rack and can drive the rack to move in the vertical direction. The rack is fixedly connected to the rack frame.

2. The transmission mechanism for an oil pumping unit according to claim 1, characterized in that: The rack is configured in an elongated ring shape.

3. The transmission mechanism for an oil pumping unit according to claim 1, characterized in that: The driving mechanism adopts a bidirectional motor.

4. The transmission mechanism for an oil pumping unit according to claim 2, characterized in that: It also includes a rocker frame, a pin hole is opened at the bottom of the rocker frame, a pin shaft is arranged inside the pin hole, and the rocker frame can rotate around the pin shaft.

5. The transmission mechanism for an oil pumping unit according to claim 2, characterized in that: An intermediate panel is provided between the two parallel straight rack parts of the rack, and a plurality of fixing pins in contact with the straight rack parts are arranged at intervals on the intermediate panel. The rack is fixedly connected to the rack frame via the fixing pins.

6. The transmission mechanism for an oil pumping unit according to claim 1, characterized in that: It also includes a bracket and a fixing member, and the driving mechanism is fixed above the bracket through the fixing member.

7. The transmission mechanism for an oil pumping unit according to claim 6, characterized in that: The fixing member is a threaded member.

8. The transmission mechanism for an oil pumping unit according to claim 4, characterized in that: It also includes a frame mechanism, which includes a rocker base, and the rocker frame is connected to the rocker base through the pin shaft.

9. The transmission mechanism for an oil pumping unit according to claim 8, characterized in that: The frame mechanism further includes a body, the rocker base is fixed on the body, and the rack frame is arranged inside the body.

10. The transmission mechanism for an oil pumping unit according to claim 9, characterized in that: The frame mechanism further comprises a body base, and the body is fixed on the body base.

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