Pumping unit stroke adjusting system and method

Abstract

The invention discloses a pumping unit stroke adjusting system, which belongs to the technical field of pumping units and comprises a base, a power device mounted in the base, a support arranged at the top of the base, a walking beam connected to the top of the support, a sliding opening formed in the walking beam, an adjusting beam and a horse head slidably connected in the sliding opening, and a driving adjusting structure mounted in the sliding opening. The power device and the driving adjusting structure are connected through a linkage column. Through cooperation of the walking beam and the adjusting beam, a structure with the adjustable length is formed, then the stroke of the horse head can be adjusted conveniently, and use is more flexible. The invention further discloses an oil pumping unit stroke adjusting method, the oil pumping unit stroke adjusting system is used, and the method specifically comprises the steps that the servo motor is started, the servo motor drives the adjusting beam to move in the sliding opening, and the horse head is further driven to move; meanwhile, the servo motor drives the composite shaft to rotate and further drives the base to move relative to the bracket to complete stroke adjustment of the oil pumping unit.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pumping units, and particularly relates to a pumping unit stroke adjustment system and a pumping unit stroke adjustment method. BACKGROUND

[0002] A pumping unit is a machine device for oil exploitation, commonly known as a "kowtow machine", which makes oil out of the well through pressurization, and a pumping unit stroke adjustment system with stroke adjustment function is a pumping unit that can realize stroke adjustment.

[0003] In the prior art, a small pumping unit is disclosed in Chinese Patent No. CN207647492U, which comprises a base, a support, a crank, a rope hanger, a horse head, a beam body, a middle bearing seat, a tail beam balancing device, a tail bearing seat, a connecting rod crossbeam, a speed reducer, a full-enclosed guardrail, a crank pin, a brake system and a motor assembly. The base is provided with a speed reducer, the output shaft of the speed reducer is connected with one end of the crank, the crank is connected with the connecting rod through the crossbeam and is hinged on the beam, the support on the base supports the middle part of the beam body, the one end of the beam body is fixed with a front horse head, the other end of the beam body is provided with a tail beam balancing device, the tail part of the tail beam balancing device is in a cylindrical structure, the tail beam balancing device is fixed and locked at the end of the beam body through a portable safety pin, the counterweight box of the tail beam balancing device is designed in a cylindrical shape, the middle part of the cylinder is designed in a square shape, and a number of square counterweight blocks can be placed in the square, each square counterweight block is fixed as a whole through a safety pin, two filling openings are arranged on the counterweight box, and particles can be added through the movable openings to act as counterweights, one of the filling openings is located at the upper part of the cylindrical structure, and the other filling opening is located at the lower part of the cylindrical structure, the filling opening of the counterweight box is provided with a sealing cover, the sealing cover is fixed on the counterweight box body by bolts, and in use, the tail beam balancing device and the beam body are connected in a portable safety pin fixed and locked manner, which is convenient for installation, the motor is installed in front of the support and reversely installed with the speed reducer, thereby reducing the floor area of the whole machine, the content of the beam balancing device can be increased or decreased according to different well conditions, the balancing effect is improved, and the purpose of reducing cost and saving energy is achieved. Although the above-mentioned prior art scheme can realize overall balance adjustment through counterweight adjustment, the adjustable operation convenience of the stroke is poor, and the use flexibility needs to be further improved. SUMMARY

[0004] The first object of the present application is to provide a pumping unit stroke adjustment system, which adjusts the stroke of the adjusting beam by setting a driving adjustment structure, thereby solving the technical problem of inflexible adjustment of the effective stroke of the horse head in the prior art.

[0005] The second object of the present application is to provide a pumping unit stroke adjustment method, which adjusts the base and the adjusting beam synchronously by a power device, thereby being more accurate.

[0006] The first technical solution of the present application is an oil pumping unit stroke adjustment system, which comprises a base, a power device installed in the base, a support provided on the top of the base, a beam connected to the top of the support, a sliding opening provided in the beam, an adjustment beam slidably connected in the sliding opening, a horse head installed at one end of the adjustment beam away from the sliding opening, a driving adjustment structure installed in the sliding opening, and a linkage column connecting the power device and the driving adjustment structure, wherein the driving adjustment structure is used to adjust the sliding adjustment of the adjustment beam relative to the sliding opening.

[0007] The first technical solution of the present application is also characterized by:

[0008] The driving adjustment structure comprises a threaded rod rotatably connected in the sliding opening, and a transmission rod, the threaded rod is threadedly connected with the adjustment beam, the transmission rod is drivingly connected with the linkage column through a flexible shaft, a large transmission gear is sleeved on the outer wall of the threaded rod, a small transmission gear is sleeved on the outer wall of the transmission rod, and the large transmission gear and the small transmission gear are meshed with each other.

[0009] A bottom notch is formed in the bottom of the adjustment beam, and the transmission rod is installed in the bottom notch.

[0010] The oil pumping unit stroke adjustment system further comprises a bracket, the bracket is located at the bottom of the base and is slidably connected with the base, the power device comprises a servo motor fixedly connected in the bracket, the power device further comprises a composite shaft rotatably arranged in the bracket, the composite shaft is sequentially provided with a polished rod section, a threaded section and a prism section along the axial direction, a driven bevel gear is sleeved on the polished rod section, a driving bevel gear is sleeved on the output shaft of the servo motor, the driven bevel gear and the driving bevel gear are meshed with each other, a transmission sleeve is sleeved on the threaded section, the transmission sleeve is fixedly connected with the base, a transmission bevel gear is slidably and rotatably connected on the prism section, a linkage bevel gear is connected at the end of the linkage column penetrating through the base, the transmission bevel gear and the linkage bevel gear are meshed with each other, a positioning seat is rotatably connected on the side of the transmission bevel gear away from the linkage bevel gear, and the positioning seat is slidably connected on the prism section.

[0011] A limiting strip and a collision strip are fixedly connected in the sliding opening, the limiting strip penetrates through the adjustment beam and is used to limit the upper limit of the adjustment distance of the adjustment beam, the collision strip is arranged on the two sides of the large transmission gear and the small transmission gear, and the distance between the collision strip and the adjustment beam is less than the distance between the large transmission gear, the small transmission gear and the adjustment beam.

[0012] A guide opening is formed in the support, a guide cylinder is fixedly connected in the guide opening, and the linkage column is rotatably connected in the guide cylinder.

[0013] An observation and maintenance opening is formed in the base, a rotating cover is rotatably connected in the observation and maintenance opening, a limiting protruding strip is arranged on the rotating cover, a supporting groove matched with the limiting protruding strip is arranged in the observation and maintenance opening, the limiting protruding strip and the supporting groove cooperate to form a limiting position after the rotating cover is rotated and closed, a recessed groove is arranged on the rotating cover, and a protruding hook plate is arranged in the recessed groove.

[0014] The second technical solution adopted by the present application is an oil pumping unit stroke adjustment method using the above-mentioned oil pumping unit stroke adjustment system, specifically: the servo motor is started, the servo motor drives the composite shaft to rotate, further drives the linkage bevel gear to rotate, the linkage bevel gear drives the soft shaft to rotate, the soft shaft drives the transmission rod to rotate, the transmission rod transmits the rotating force to the threaded rod through the large transmission gear and the small transmission gear, the threaded rod drives the adjusting beam to move in the sliding opening, further drives the horse head to move; at the same time, the servo motor drives the composite shaft to rotate, further drives the base to move relative to the bracket, that is, the stroke adjustment of the oil pumping unit is completed.

[0015] The present application has the following beneficial effects:

[0016] 1、The present application forms a length-adjustable structure through the cooperation of the beam and the adjusting beam, thereby facilitating the stroke adjustment of the horse head and making the use more flexible.

[0017] 2、The present application realizes the installation of the base support and the relative position adjustment of the base relative to the bracket at the same time through the cooperation of the base and the chassis components, so as to cooperate with the adjustment of the horse head to form corresponding adjustment, and the action point of the horse head changes less during the adjustment process, thereby having lower influence on the oil pumping operation.

[0018] 3、The present application realizes the linkage adjustment of the relative displacement of the base and the bracket and the relative displacement of the beam and the adjusting beam through the design of the linkage column, and is more practical. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the oil pumping unit stroke adjustment system of the present application;

[0020] Figure 2 It is a structural schematic view of the sliding opening in the oil pumping unit stroke adjustment system of the present application;

[0021] Figure 3 It is a structural schematic view of the sliding opening in the oil pumping unit stroke adjustment system of the present application; Figure 2

[0022] Figure 4 It is a structural schematic view of the observation and maintenance opening in the oil pumping unit stroke adjustment system of the present application;

[0023] Figure 5 It is a connection structure schematic view of the transmission rod and the soft shaft in the oil pumping unit stroke adjustment system of the present application;

[0024] Figure 6 It is a connection structure schematic view of the transmission rod and the soft shaft in the oil pumping unit stroke adjustment system of the present application; Figure 5

[0025] Figure 7 It is a structural schematic view of the power device in the oil pumping unit stroke adjustment system of the present application;

[0026] ​​Figure 8 It is a structural schematic view of the compound shaft in the pumping unit stroke adjusting system of the present application.

[0027] In the figure: 1. bracket, 2. base, 3. compound shaft, 4. polished rod section, 5. threaded section, 6. prismatic section, 7. driven bevel gear, 8. servo motor, 9. driving bevel gear, 10. transmission sleeve, 11. transmission bevel gear, 12. positioning seat, 13. linkage column, 14. linkage bevel gear, 15. adjusting beam, 16. threaded rod, 17. transmission rod, 18. flexible shaft, 19. large transmission gear, 20. small transmission gear, 21. bottom notch, 22. limiting strip, 23. anti-collision strip, 24. guide cylinder, 25. rotating cover, 26. limiting convex strip, 27. recessed groove, 28. protruding hook plate. DETAILED DESCRIPTION

[0028] The present application will be further explained in conjunction with the accompanying drawings and specific embodiments.

[0029] Embodiment 1

[0030] As shown in Figure 1 and Figure 2 , the disclosed pumping unit stroke adjusting system comprises a base 2, a power device is installed in the base 2, a support is arranged on the top of the base 2, a walking beam is connected to the top of the support, a sliding opening is arranged in the walking beam, an adjusting beam 15 is slidably connected in the sliding opening, a horse head is installed on the end of the adjusting beam 15 away from the sliding opening, a driving adjusting structure is installed in the sliding opening, the power device and the driving adjusting structure are connected through a linkage column 13, and the driving adjusting structure is used for adjusting the sliding adjustment of the adjusting beam 15 relative to the sliding opening.

[0031] In specific application, a motor assembly and a speed reducer are further arranged on the top of the base 2, the sliding opening is arranged on the right end of the walking beam, and the horse head is installed on the right end of the adjusting beam 15. Through the cooperation of the walking beam and the adjusting beam 15, a structure with adjustable length is formed, thereby facilitating the adjustment of the stroke of the horse head and making the use more flexible. The present application provides power through the power device, drives the rotation of the linkage column 13, further drives the movement of the driving adjusting structure to drive the sliding of the adjusting beam 15 in the sliding opening, and realizes the adjustment of the stroke of the horse head. The action point of the horse head changes less in the adjustment process, has lower influence on the pumping operation, and is more practical.

[0032] Embodiment 2

[0033] On the basis of embodiment 1, as shown in Figure 3 , Figure 5 and Figure 6As shown, the driving adjusting structure comprises a threaded rod 16 and a transmission rod 17, the threaded rod 16 is threadedly connected with the adjusting beam 15, specifically, the adjusting beam 15 is provided with a threaded groove, the threaded rod 16 is threadedly connected in the threaded groove, the transmission rod 17 is drivingly connected with the linkage column 13 through a flexible shaft 18, the threaded rod 16 and the transmission rod 17 are drivingly connected, specifically, the outer wall of the threaded rod 16 is sleeved with a large transmission gear 19, the outer wall of the transmission rod 17 is sleeved with a small transmission gear 20, the large transmission gear 19 and the small transmission gear 20 are mutually engaged, when the servo motor 8 works, the transmission rod 17 is rotated by the flexible shaft 18, since the large transmission gear 19 and the small transmission gear 20 are mutually engaged on the transmission rod 17 and the threaded rod 16, the transmission rod 17 rotates to drive the small transmission gear 20 to rotate, further drives the large transmission gear 19 to rotate, finally realizes the synchronous rotation of the transmission rod 17 and the threaded rod 16; the adjusting beam 15 is provided with a bottom notch 21, the transmission rod 17 is installed in the bottom notch 21, the bottom notch 21 provides transmission space for the transmission rod 17, the structure is more compact, during the adjustment process of the horse head, the transmission rod 17 will not be interfered by the movement of the adjusting beam 15.

[0034] Example 3

[0035] On the basis of example 1, as shown in Figure 7 and Figure 8 The pumping unit stroke adjusting system further comprises a bracket 1, the bracket 1 is located at the bottom of the base 2 and is slidingly connected with the base 2, the power device comprises a servo motor 8 fixedly connected in the bracket 1, the power device further comprises a composite shaft 3 rotationally arranged in the bracket 1, specifically, the composite shaft 3 is sleeved in the bracket 1 body through a thrust bearing at both ends, plays a supporting role, the composite shaft 3 is sequentially provided with a polished rod section 4, a threaded section 5 and a prism section 6 along the axial direction, as shown in Figure 7As shown, the composite shaft 3 consists of a prism section 6, a threaded section 5, and a smooth rod section 4 from left to right. A driven bevel gear 7 is sleeved on the smooth rod section 4. A drive bevel gear 9 is sleeved on the output shaft of the servo motor 8. The driven bevel gear 7 and the drive bevel gear 9 mesh with each other. When the servo motor 8 works, it drives the drive bevel gear 9 to rotate. The drive bevel gear 9 further drives the driven bevel gear 7 to rotate. The driven bevel gear 7 drives the composite shaft 3 to rotate. A transmission sleeve 10 is sleeved on the threaded section 5. The transmission sleeve 10 is fixedly connected to the base 2. When the composite shaft 3 rotates, the transmission sleeve 10 drives the base 2 to move relative to the bracket 1. A transmission bevel gear 11 is slidably and rotatably connected on the prism section 6. A linkage column 13 passes through the end of the base 2 and is connected to a linkage bevel gear 14. Specifically, a vertical hole is opened on the base 2. The linkage column 13 is rotatably connected in the vertical hole. The bottom end of the linkage column 13 is fixedly connected to the linkage bevel gear 14. The transmission bevel gear 11 and the linkage bevel gear 14 mesh with each other. A positioning seat 12 is rotatably connected to the side of the transmission bevel gear 11 away from the linkage bevel gear 14. When the base 2 moves relative to the bracket 1, the prism segment 6 drives the transmission bevel gear 11 to rotate, which in turn drives the linkage bevel gear 14 to rotate. The positioning seat 12 is slidably connected on the prism segment 6. In the specific design, the distance between the positioning seat 12 and the linkage bevel gear 14 is exactly the size at which the transmission bevel gear 11 meshes with the linkage bevel gear 14. Therefore, when the positioning seat 12 moves, it drives the transmission bevel gear 11 to move, and simultaneously, the linkage bevel gear 14 moves synchronously. The transmission bevel gear 11 and the linkage bevel gear 14 remain relatively stationary in position, ensuring that the linkage column 13 does not stop moving when the base 2 moves relative to the bracket 1.

[0036] The present invention achieves the installation of the support of the base 2 and the bracket 1, while facilitating the adjustment of the relative position of the base 2 with respect to the bracket 1, so as to cooperate with the adjustment of the donkey head to form a corresponding adjustment. During the adjustment process, the point of action of the donkey head changes little, and the impact on the oil pumping operation is low.

[0037] Furthermore, a limiting strip 22 and an anti-collision strip 23 are fixedly connected inside the sliding port. The limiting strip 22 passes through the adjusting beam 15 and is used to limit the upper limit of the adjustment distance of the adjusting beam 15. The anti-collision strip 23 is set on both sides of the large transmission gear 19 and the small transmission gear 20. The distance between the anti-collision strip 23 and the adjusting beam 15 is less than the distance between the large transmission gear 19 and the small transmission gear 20 and the adjusting beam 15, so as to avoid interference between the adjusting beam 15 and the large transmission gear 19 and the small transmission gear 20 during adjustment.

[0038] Furthermore, a guide port is provided on the bracket, and a guide cylinder 24 is fixedly connected inside the guide port, with the linkage column 13 rotatably connected inside the guide cylinder 24.

[0039] Furthermore, such as Figure 4As shown, the base 2 is provided with an observation and maintenance opening, facilitating maintenance of the servo motor 8 and other equipment below the base 2. The observation and maintenance opening is rotatably connected with a rotating cover 25. The rotating cover 25 is provided with a limiting protrusion 26. The observation and maintenance opening is provided with a supporting groove matched with the limiting protrusion 26, limiting the rotating cover 25 after rotation. The rotating cover 25 is provided with a recessed groove 27. The recessed groove 27 is provided with a protruding hook plate 28, facilitating force application during opening of the rotating cover 25.

[0040] The application further discloses a pumping unit stroke adjusting method using the pumping unit stroke adjusting system. Specifically, the servo motor 8 is started, the servo motor 8 drives the composite shaft 3 to rotate, further drives the linkage bevel gear 14 to rotate, drives the soft shaft 18 to rotate, drives the transmission rod 17 to rotate, the transmission rod 17 transmits the rotating force to the screw rod 16 through the large transmission gear 19 and the small transmission gear 20, the screw rod 16 drives the adjusting beam 15 to move in the sliding opening, further drives the horse head to move; meanwhile, the servo motor 8 drives the composite shaft 3 to rotate, further drives the base 2 to move relative to the bracket 1, i.e. the stroke adjustment of the pumping unit is completed.

Claims

1. A pumping unit stroke adjustment system, characterized in that, Includes a base (2), a power unit is installed inside the base (2), a bracket is provided on the top of the base (2), a walking beam is connected to the top of the bracket, a sliding port is provided inside the walking beam, an adjusting beam (15) is slidably connected inside the sliding port, a donkey head is installed on the end of the adjusting beam (15) away from the sliding port, a drive adjustment structure is installed inside the sliding port, the power unit and the drive adjustment structure are connected by a linkage column (13), and the drive adjustment structure is used to adjust the sliding adjustment of the beam (15) relative to the sliding port.

2. The pumping unit stroke adjustment system according to claim 1, characterized in that, The drive adjustment structure includes a threaded rod (16) and a transmission rod (17) rotatably connected in the sliding port. The threaded rod (16) is threadedly connected to the adjustment beam (15), and the transmission rod (17) is driven by the linkage column (13) through a flexible shaft (18). A large transmission gear (19) is sleeved on the outer wall of the threaded rod (16), and a small transmission gear (20) is sleeved on the outer wall of the transmission rod (17). The large transmission gear (19) and the small transmission gear (20) mesh with each other.

3. The pumping unit stroke adjustment system according to claim 2, characterized in that, The bottom of the adjusting beam (15) has a bottom notch (21), and the transmission rod (17) is installed in the bottom notch (21).

4. The pumping unit stroke adjustment system according to claim 2, characterized in that, The pumping unit stroke adjustment system also includes a bracket (1), which is located at the bottom of the base (2) and slidably connected to the base (2). The power unit includes a servo motor (8) fixed in the bracket (1) and a composite shaft (3) rotatably disposed in the bracket (1). The composite shaft (3) is sequentially configured with a smooth rod section (4), a threaded section (5), and a prism section (6) along the axial direction. A driven bevel gear (7) is sleeved on the smooth rod section (4). A drive bevel gear (9) is sleeved on the output shaft of the servo motor (8). (7) meshes with the drive bevel gear (9), the threaded section (5) is fitted with a transmission sleeve (10), the transmission sleeve (10) is fixedly connected to the base (2), the prism section (6) is slidably and rotatably connected with a transmission bevel gear (11), the linkage column (13) is connected to the end of the base (2) with a linkage bevel gear (14), the transmission bevel gear (11) and the linkage bevel gear (14) mesh with each other, the side of the transmission bevel gear (11) away from the linkage bevel gear (14) is rotatably connected with a positioning seat (12), the positioning seat (12) is slidably connected on the prism section (6).

5. The pumping unit stroke adjustment system according to claim 1, characterized in that, A limiting strip (22) and a collision protection strip (23) are fixedly connected inside the sliding port. The limiting strip (22) passes through the adjusting beam (15) and is used to limit the upper limit of the adjustment distance of the adjusting beam (15). The collision protection strip (23) is set on both sides of the large transmission gear (19) and the small transmission gear (20). The distance between the collision protection strip (23) and the adjusting beam (15) is less than the distance between the large transmission gear (19) and the small transmission gear (20) and the adjusting beam (15).

6. The pumping unit stroke adjustment system according to claim 1, characterized in that, The bracket has a guide opening, and a guide tube (24) is fixedly connected inside the guide opening. The linkage column (13) is rotatably connected inside the guide tube (24).

7. The pumping unit stroke adjustment system according to claim 1, characterized in that, The base (2) has an observation and maintenance opening. A rotating cover (25) is rotatably connected inside the observation and maintenance opening. A limiting protrusion (26) is provided on the rotating cover (25). A support groove matching the limiting protrusion (26) is provided inside the observation and maintenance opening. The rotating cover (25) forms a limiting position after rotation and closure. A recessed groove (27) is provided on the rotating cover (25). A protruding hook plate (28) is provided inside the recessed groove (27).

8. A method for adjusting the stroke of an oil pumping unit, using the oil pumping unit stroke adjustment system as described in claim 4, characterized in that, Specifically: the servo motor (8) is turned on, and the servo motor (8) drives the composite shaft (3) to rotate, which in turn drives the linkage bevel gear (14) to rotate. The linkage bevel gear (14) drives the flexible shaft (18) to rotate, and the flexible shaft (18) drives the transmission rod (17) to rotate. The transmission rod (17) transmits the rotational force to the threaded rod (16) through the large transmission gear (19) and the small transmission gear (20). The threaded rod (16) drives the adjusting beam (15) to move in the sliding port, which in turn drives the donkey head to move. At the same time, the servo motor (8) drives the composite shaft (3) to rotate, which in turn drives the base (2) to move relative to the bracket (1), thus completing the stroke adjustment of the pumping unit.

Images