A small oil pumping unit with easy-to-adjust stroke

Abstract

The present invention discloses a small-sized oil pumping unit with easily adjustable stroke, belonging to the technical field of oil pumping units. The small-sized oil pumping unit with easily adjustable stroke comprises a device base, a support column fixedly mounted on the top of the device base, a hinge groove formed at the top end of the support column, a rotating shaft fixedly mounted on the inner wall of the hinge groove, a walking beam rotatably connected to the outer wall of the rotating shaft, a donkey head fixedly connected to one end of the walking beam, a rope hanger fixedly connected to the side of the donkey head away from the walking beam, a linkage groove formed inside the end of the walking beam away from the donkey head, the linkage groove passing through the walking beam, a support plate fixedly mounted on the outer wall on the back side of the support column, the support plate being arranged in an L-shape, and a drive motor fixedly mounted on the outer wall on the front side of the support plate. The new drive mechanism can replace the traditional drive mechanism. The oil pumping unit is small in size and simple in structure, reduces the floor space occupied, reduces the transportation cost, and has easily adjustable stroke.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pumping units, and more particularly to a small oil pumping unit with easily adjustable stroke. Background Art

[0002] A pumping unit, commonly known as a "bowing machine," is a machine used in oil extraction. It is the primary lifting device in a rod pumping system. Depending on whether or not a walking beam is present, it can be divided into two types: beam-type and beamless. The beam-type pumping unit is characterized by its simple structure, ease of manufacture, and ease of use. In particular, it can operate reliably and continuously in oil fields around the clock. Therefore, despite drawbacks such as high acceleration at the donkey-head suspension point, poor balance, low efficiency, and bulky and heavy weight during long strokes, it remains the most widely used pumping unit.

[0003] Existing pumping units are generally large, occupying a large area and increasing transportation costs. This is primarily due to the complex drive mechanisms of existing pumping units. These limitations make it difficult to reduce the size of the units and make their stroke difficult to adjust. Therefore, we propose a small pumping unit with easily adjustable stroke. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a small oil pumping unit with an easily adjustable stroke, which can adopt a new drive mechanism to replace the traditional drive mechanism. The oil pumping unit is small in size and simple in structure, which reduces the footprint and transportation costs, and the stroke is easy to adjust.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A small oil pumping unit with easy-to-adjust stroke comprises a device base, a support column is fixedly installed on the top of the device base, a hinge groove is provided on the top of the support column, a rotating shaft is fixedly installed on the inner wall of the hinge groove, a walking beam is rotatably connected to the outer wall of the rotating shaft, one end of the walking beam is fixedly connected to a donkey head, a suspension device is fixedly connected to the side of the donkey head away from the walking beam, a linkage groove is provided inside the end of the walking beam away from the donkey head, and the linkage groove passes through the walking beam.

[0009] A support plate is fixedly installed on the outer wall on the back side of the support column, and the support plate is arranged in an L shape. A driving motor is fixedly installed on the outer wall on the front side of the support plate, and an adjusting disk is fixedly connected to the output end of the driving motor. Two support blocks are fixedly connected to the outer wall on the front side of the adjusting disk, and a screw is movably installed between the support blocks. A rotating groove is provided on the outer wall of the support block close to the screw side, and a linkage rod is threadedly connected to the outer wall of the screw, and guide rods fixedly installed between the support blocks are provided on both sides of the screw, and connecting blocks are fixedly connected to the outer walls on both sides of the linkage rod.

[0010] The bottom end of the walking beam is fixedly connected to a sliding rod, and the sliding rod is located between the donkey head and the support column. A fixing rod is fixedly installed on the outer wall of the support column close to the sliding rod. A sliding groove is provided inside the fixing rod. A control switch is fixedly installed on the outer wall of the front side of the support column, and a distribution box is fixedly installed on the top of the device base and below the fixing rod.

[0011] Furthermore, both sides of the walking beam are provided with limit blocks fixedly mounted on the outer wall of the rotating shaft, and the limit blocks can prevent the walking beam from rocking back and forth, thereby improving stability.

[0012] Furthermore, both ends of the screw are rotatably connected to the rotation grooves on both sides, so that the screw can rotate.

[0013] Furthermore, a handle sleeve is provided on the outer wall of the screw rod. The handle sleeve is made of rubber and is fixedly connected to the screw rod. The setting of the handle sleeve allows the screw rod to be rotated by gripping the handle sleeve, thereby improving convenience.

[0014] Furthermore, the guide rod passes through the connecting block, and the guide rod and the connecting block are slidably connected. The arrangement of the guide rod and the connecting block can prevent the linkage rod from deviating during movement.

[0015] Furthermore, the linkage rod passes through the linkage groove, and the linkage rod is slidably connected to the linkage groove. The driving motor, the adjusting disk, and the linkage rod constitute a driving mechanism of the oil pump. When the driving motor is started, the linkage rod can be driven to rotate through the adjusting disk. The linkage rod drives the rocker arm to swing back and forth with the rotating shaft as the center axis through the linkage groove, thereby enabling the oil pump to pump oil. The driving mechanism has a simple and lightweight structure, which reduces the size of the oil pump, thereby reducing the footprint of the oil pump and reducing transportation costs.

[0016] Furthermore, the sliding rod, fixed rod and sliding groove are all arranged in an arc shape with the rotating shaft as the center. The sliding rod is slidably connected to the sliding groove. The arrangement of the sliding rod, fixed rod and sliding groove can prevent the rocker arm from deviating during the swinging process, and can provide certain support to the rocker arm, thereby further improving stability.

[0017] Furthermore, the control switch is electrically connected to the drive motor and the distribution box, and the control switch, the drive motor and the distribution box form a closed loop, thereby facilitating the control of the start and stop of the drive motor.

[0018] Furthermore, a ladder is fixedly installed on the side of the support column away from the distribution box. The ladder is arranged to be inclined, and the top of the ladder is fixedly connected to the support column. The staff can climb up through the ladder, thereby facilitating the rotation of the screw and further facilitating the adjustment of the stroke of the oil pump.

[0019] A stroke adjustment method for a small oil pumping unit with easily adjustable stroke comprises the following steps:

[0020] S1. The worker climbs the ladder until he can easily grip the handle.

[0021] S2. Hold the handle sleeve and turn the screw clockwise to drive the linkage rod toward the support column, which can increase the swing amplitude of the donkey head and thus increase the stroke of the oil pumping unit.

[0022] S3. Hold the handle sleeve and turn the screw counterclockwise to drive the linkage rod to move away from the support column, which can reduce the swing amplitude of the donkey head and thus reduce the stroke of the oil pump.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] (1) In this solution, the driving motor, the adjusting disk, and the linkage rod constitute the driving mechanism of the oil pump. When the driving motor is started, the linkage rod can be driven to rotate through the adjusting disk. The linkage rod drives the rocker arm to swing back and forth with the rotating shaft as the central axis through the linkage groove, thereby enabling the oil pump to pump oil. The driving mechanism has a simple and lightweight structure, which reduces the size of the oil pump, thereby reducing the area occupied by the oil pump and reducing transportation costs.

[0026] (2) Through the arrangement of the support block, screw, rotating groove, linkage rod, handle sleeve, connecting block and guide rod, the linkage rod is threadedly connected to the screw, and the linkage rod cannot rotate with the screw as the central axis under the restriction of the guide rod, so that the screw is rotated counterclockwise, which can drive the linkage rod to move toward the support column, thereby increasing the swing amplitude of the walking beam, and then increasing the swing amplitude of the donkey head, and increasing the stroke of the oil pump. Similarly, the screw is rotated clockwise to reduce the stroke of the oil pump, thereby facilitating the adjustment of the stroke of the oil pump.

[0027] (3) Both sides of the walking beam are provided with limit blocks fixedly mounted on the outer wall of the rotating shaft. The limit blocks can prevent the walking beam from shaking back and forth, thereby improving stability.

[0028] (4) The two ends of the screw are rotatably connected to the rotating grooves on both sides, so that the screw can rotate.

[0029] (5) A handle sleeve is provided on the outer wall of the screw rod. The handle sleeve is made of rubber and is fixedly connected to the screw rod. The setting of the handle sleeve allows the screw rod to be rotated by gripping the handle sleeve, thereby improving convenience.

[0030] (6) The guide rod passes through the connecting block, and the guide rod and the connecting block are slidably connected. The setting of the guide rod and the connecting block can prevent the linkage rod from deviating during the movement.

[0031] (7) The sliding rod, fixed rod and sliding groove are all arranged in an arc shape with the rotating shaft as the center. The sliding rod is slidably connected to the sliding groove. The arrangement of the sliding rod, fixed rod and sliding groove can prevent the rocker arm from deflecting during the swinging process and can provide a certain support to the rocker arm, thereby further improving the stability.

[0032] (8) The control switch is electrically connected to the drive motor and the distribution box. The control switch, the drive motor and the distribution box form a closed circuit, which makes it easier to control the start and stop of the drive motor.

[0033] (9) A ladder is fixedly installed on the side of the support column away from the distribution box. The ladder is set to be inclined, and the top of the ladder is fixedly connected to the support column. The staff can climb up by using the ladder, which makes it easier to turn the screw and then adjust the stroke of the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 is a side view of a support column of the present invention;

[0036] Figure 3 A top view of the walking beam of the present invention;

[0037] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0038] Figure 5 It is a front view of the adjustment disk of the present invention;

[0039] Figure 6 Cross-sectional view inside the support block;

[0040] Figure 7 It is a cross-sectional view inside the fixing rod.

[0041] Description of the numbers in the figure:

[0042] 1. Device base; 2. Support column; 3. Articulated slot; 4. Rotating shaft; 5. Walking beam; 6. Limit block; 7. Donkey head; 8. Rope hanger; 9. Linkage slot; 10. Support plate; 26. Ladder; 12. Drive motor; 13. Adjustment plate; 14. Support block; 15. Screw; 16. Rotating slot; 17. Linkage rod; 18. Handle cover; 19. Connecting block; 20. Guide rod; 21. Slide rod; 22. Fixed rod; 23. Slide slot; 24. Control switch; 25. Distribution box. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all 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.

[0044] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0046] Example 1:

[0047] See also Figure 1-2A small oil pumping unit with easy-to-adjust stroke includes a device base 1, a support column 2 is fixedly installed on the top of the device base 1, a hinge groove 3 is opened on the top of the support column 2, a rotating shaft 4 is fixedly installed on the inner wall of the hinge groove 3, and a walking beam 5 is rotatably connected to the outer wall of the rotating shaft 4. Both sides of the walking beam 5 are provided with limit blocks 6 fixedly installed on the outer wall of the rotating shaft 4. The limit blocks 6 can prevent the walking beam 5 from shaking back and forth, thereby improving stability. One end of the walking beam 5 is fixedly connected to a donkey head 7, and the side of the donkey head 7 away from the walking beam 5 is fixedly connected to a suspension rope 8. A linkage groove 9 is opened inside the end of the walking beam 5 away from the donkey head 7, and the linkage groove 9 runs through the walking beam 5.

[0048] See also Figure 1 and Figure 3-6 A support plate 10 is fixedly installed on the outer wall of the back side of the support column 2. The support plate 10 is set in an L shape. A drive motor 12 is fixedly installed on the outer wall of the front side of the support plate 10. An adjusting disk 13 is fixedly connected to the output end of the drive motor 12. Two support blocks 14 are fixedly connected to the outer wall of the front side of the adjusting disk 13. A screw 15 is movably installed between the support blocks 14. A rotating groove 16 is opened on the outer wall of the support block 14 near the screw 15. The two ends of the screw 15 are rotatably connected to the rotating grooves 16 on both sides. The screw rod 15 can be rotated. A linkage rod 17 is threadedly connected to the outer wall of the screw rod 15. Guide rods 20 are fixedly installed between the support blocks 14 on both sides of the screw rod 15. Connecting blocks 19 are fixedly connected to the outer walls of the linkage rod 17 on both sides. A handle sleeve 18 is sleeved on the outer wall of the screw rod 15. The handle sleeve 18 is made of rubber and is fixedly connected to the screw rod 15. The setting of the handle sleeve 18 can rotate the screw 15 by gripping the handle sleeve 18, which improves convenience. The guide rod 20 passes through the connecting block 19, and the guide rod 20 is connected to the connecting block 19. 9 sliding connection, the setting of the guide rod 20 and the connecting block 19 can prevent the linkage rod 17 from deflecting during the movement. The linkage rod 17 passes through the linkage groove 9 and is slidably connected to the linkage groove 9. The drive motor 12, the adjustment disk 13, and the linkage rod 17 constitute the driving mechanism of the oil pumping unit. When the drive motor 12 is started, the linkage rod 17 can be driven to rotate through the adjustment disk 13. The linkage rod 17 drives the walking beam 5 to swing back and forth with the rotating shaft 4 as the central axis through the linkage groove 9, thereby enabling the oil pumping unit to perform oil pumping work. The structure of the drive mechanism It is simple and lightweight, and reduces the size of the oil pumping unit, thereby reducing the floor space occupied by the oil pumping unit and reducing transportation costs. The linkage rod 17 is threadedly connected to the screw rod 15, and the linkage rod 17 cannot rotate with the screw rod 15 as the central axis under the restriction of the guide rod 20, so that rotating the screw rod 15 counterclockwise can drive the linkage rod 17 to move toward the support column 2, thereby increasing the swing amplitude of the walking beam 5, and then increasing the swing amplitude of the donkey head 7, and increasing the stroke of the oil pumping unit. Similarly, rotating the screw rod 15 clockwise can reduce the stroke of the oil pumping unit.

[0049] See also Figure 1and Figure 7 The bottom end of the walking beam 5 is fixedly connected with a sliding rod 21, and the sliding rod 21 is located between the donkey head 7 and the supporting column 2. A fixing rod 22 is fixedly installed on the outer wall of the supporting column 2 near the side of the sliding rod 21. A sliding groove 23 is opened inside the fixing rod 22. The sliding rod 21, the fixing rod 22, and the sliding groove 23 are all arranged in an arc shape with the rotating shaft 4 as the center. The sliding rod 21 is slidably connected with the sliding groove 23. The arrangement of the sliding rod 21, the fixing rod 22, and the sliding groove 23 can prevent the walking beam 5 from deflecting during the swinging process and can provide a certain support for the walking beam 5, further improving the stability. A control switch 24 is fixedly installed on the outer wall of the front side of the supporting column 2. A distribution box 25 is fixedly installed on the top of the device base 1 and located below the fixing rod 22. The control switch 24 is electrically connected to the drive motor 12 and the distribution box 25. The control switch 24, the drive motor 12, and the distribution box 25 form a closed circuit, which is convenient for controlling the start and stop of the drive motor 12.

[0050] A stroke adjustment method for a small oil pumping unit with easily adjustable stroke comprises the following steps:

[0051] S1, the worker climbs up the ladder 26 until the worker's hand can easily grip the handle sleeve 18;

[0052] S2. Hold the handle sleeve 18 and rotate the screw 15 clockwise to drive the linkage rod 17 to move closer to the support column 2, thereby increasing the swing amplitude of the donkey head 7 and thereby increasing the stroke of the pumping unit;

[0053] S3. Hold the handle sleeve 18 and rotate the screw 15 counterclockwise to drive the linkage rod 17 to move away from the support column 2, thereby reducing the swing amplitude of the donkey head 7 and thus reducing the stroke of the oil pumping unit.

[0054] In the present invention, the drive motor 12, the adjustment disk 13, and the linkage rod 17 constitute the drive mechanism of the oil pumping unit. When the drive motor 12 is started, the linkage rod 17 can be driven to rotate through the adjustment disk 13. The linkage rod 17 drives the walking beam 5 to swing back and forth with the rotating shaft 4 as the central axis through the linkage groove 9, thereby enabling the oil pumping unit to pump oil. Moreover, through the settings of the support block 14, the screw 15, the rotating groove 16, etc., the forward and reverse rotation of the screw 15 can respectively reduce and increase the stroke of the oil pumping unit. Compared with the prior art, a new drive mechanism can be adopted to replace the traditional drive mechanism. The oil pumping unit is small in size and simple in structure, reduces the floor space, reduces the transportation cost, and the stroke is easy to adjust.

[0055] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A small oil pumping unit with easily adjustable stroke, comprising a device base (1), characterized in that: A support column (2) is fixedly installed on the top of the device base (1), and a hinge groove (3) is provided at the top of the support column (2). A rotating shaft (4) is fixedly installed on the inner wall of the hinge groove (3), and a walking beam (5) is rotatably connected to the outer wall of the rotating shaft (4). One end of the walking beam (5) is fixedly connected to a donkey head (7), and a suspension device (8) is fixedly connected to the side of the donkey head (7) away from the walking beam (5). A linkage groove (9) is provided inside the end of the walking beam (5) away from the donkey head (7), and the linkage groove (9) passes through the walking beam (5); a support plate (10) is fixedly installed on the outer wall of the back side of the support column (2), and the support plate (10) is set in an L shape. A driving motor (12) is fixedly mounted on the outer wall of the front side of the plate (10), an adjusting disk (13) is fixedly connected to the output end of the driving motor (12), two supporting blocks (14) are fixedly connected to the outer wall of the front side of the adjusting disk (13), a screw rod (15) is movably mounted between the supporting blocks (14), a rotation groove (16) is provided on the outer wall of the supporting block (14) close to the screw rod (15), a linkage rod (17) is threadedly connected to the outer wall of the screw rod (15), guide rods (20) fixedly mounted between the supporting blocks (14) are provided on both sides of the screw rod (15), and connecting blocks (19) are fixedly connected to the outer walls of both sides of the linkage rod (17); The bottom end of the walking beam (5) is fixedly connected with a sliding rod (21), and the sliding rod (21) is located between the donkey head (7) and the support column (2). A fixing rod (22) is fixedly installed on the outer wall of the support column (2) on the side close to the sliding rod (21), and a sliding groove (23) is provided inside the fixing rod (22). A control switch (24) is fixedly installed on the outer wall of the front side of the support column (2). The top of the device base (1) and below the fixing rod (22) are fixedly installed. A distribution box (25) is provided; the control switch (24) is electrically connected to the drive motor (12) and the distribution box (25); the control switch (24), the drive motor (12) and the distribution box (25) form a closed circuit; a handle sleeve (18) is sleeved on the outer wall of the screw rod (15), the handle sleeve (18) is made of rubber and is fixedly connected to the screw rod (15); the linkage rod (17) passes through the linkage groove (9), and the linkage rod (17) is slidably connected to the linkage groove (9).

2. A small oil pumping unit with easily adjustable stroke according to claim 1, characterized in that: Both sides of the walking beam (5) are provided with limit blocks (6) fixedly mounted on the outer wall of the rotating shaft (4).

3. The small oil pumping unit with easily adjustable stroke according to claim 1, characterized in that: Both ends of the screw rod (15) are rotatably connected to the rotation grooves (16) on both sides respectively.

4. A small oil pumping unit with easily adjustable stroke according to claim 1, characterized in that: The guide rod (20) passes through the connecting block (19), and the guide rod (20) is slidably connected to the connecting block (19).

5. The small-sized oil pumping unit with easily adjustable stroke according to claim 1, characterized in that: The sliding rod (21), the fixing rod (22), and the sliding groove (23) are all arranged in an arc shape with the rotating shaft (4) as the center, and the sliding rod (21) is slidably connected to the sliding groove (23).

6. The small oil pumping unit with easily adjustable stroke according to claim 1, characterized in that: A ladder (26) is fixedly installed on the side of the support column (2) away from the distribution box (25); the ladder (26) is arranged in an inclined shape, and the top end of the ladder (26) is fixedly connected to the support column (2).

7. A small oil pumping unit with easily adjustable stroke according to claim 6, characterized in that: The method for adjusting the stroke includes the following steps: S1. The worker climbs up the ladder (26) until the worker can easily grip the handle sleeve (18). S2. Hold the handle sleeve (18) and rotate the screw (15) clockwise to drive the linkage rod (17) to move closer to the support column (2), thereby increasing the swing amplitude of the donkey head (7) and thereby increasing the stroke of the oil pumping unit; S3. Hold the handle sleeve (18) and rotate the screw (15) counterclockwise to drive the linkage rod (17) to move away from the support column (2), thereby reducing the swing amplitude of the donkey head (7) and thus reducing the stroke of the oil pumping unit.

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