Spring-loaded pumping unit

Abstract

This invention provides a spring-energy-storage type oil pumping unit, belonging to the technical field of oil pumping units. It includes a base, with a drive unit and a protective shell fixedly connected to the top of the base. An arc-shaped shell is fixedly connected to the top of the protective shell. An energy storage component is housed inside the protective shell to reduce the load on the drive unit and decrease energy consumption. The energy storage component includes an upper top plate that slides and snaps into the inside of the top of the protective shell, and a baffle plate is fixedly connected to the inside of the top of the protective shell. By incorporating the energy storage component, this invention utilizes the compression and release of the energy storage spring to store and release some energy, thereby reducing the load on the drive unit and lowering energy consumption. Simultaneously, the anti-slip component effectively prevents the counterweight box from breaking or falling out of control, thus avoiding damage to the equipment and increasing maintenance costs, while further improving the reliability of the system operation.

Description

Technical Field

[0001] This invention relates to the field of oil pumping unit technology, and particularly to a spring-loaded oil pumping unit. Background Technology

[0002] Oil pumping units are important equipment in the oil extraction industry used to extract crude oil from oil wells. Their core function is to use a mechanical drive device to drive the sucker rod to reciprocate, transporting the crude oil from the oil well to the surface.

[0003] In the prior art, Chinese patent document CN202745826U discloses a hydraulic spring-powered pumping unit. This pumping unit's energy storage tank inlet end is connected to a manual ball valve A, an inlet solenoid valve, and a piston cylinder; the outlet end is connected to a manual ball valve B, a motor and oil pump, an outlet solenoid valve, and a piston cylinder. The piston cylinder contains a piston and piston rod fixedly connected to each other, upper and lower stroke limit switches, and an energy storage spring. While this technology can meet the requirements of oil well production, offering high production efficiency, stepless stroke adjustment, small size and weight, flexible movement, and convenient maintenance, its limitations... The technology is consistent with the traditional method: traditional oil pumping units usually use the weight of the counterweight box to balance the load on the sucker rod, thereby reducing the energy consumption of the drive equipment. However, in actual operation, when the sucker rod is pumping oil downwards, the counterweight box needs to rise to maintain balance. At this time, if the counterweight box is lifted by the weight of the sucker rod itself, it will not be able to fully reduce the burden on the drive equipment. As a result, the drive equipment still needs to consume a lot of energy to push the counterweight box up. In addition, the excessive weight of the counterweight box can also cause the connection parts to break, thereby affecting the stability and safety of the equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a spring-energy storage type pumping unit to solve the problem that the existing pumping units have excessively heavy counterweight boxes, which lead to high energy consumption of the drive equipment and cause disconnection of connecting parts.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A spring-loaded pumping unit includes a base. A drive unit and a protective shell are fixedly connected to the top of the base. An arc-shaped shell is fixedly connected to the top of the protective shell. A chain is rotatably connected inside the protective shell. The output end of the drive unit passes through the side wall of the base and is connected to one side of the bottom of the chain. A fixing block is fixedly connected inside the chain. An annular frame is mounted on one side of the fixing block. A rotating shaft is rotatably connected to one side of the fixing block. Rollers are rotatably connected to the top and bottom of the rotating shaft, respectively. The rollers are rotatably engaged inside a square hole inside the annular frame. A counterweight box is fixedly connected to the top of the annular frame. The interior of the protective shell is provided with a mechanism to reduce the weight of the drive unit. The energy storage component includes a top plate that is slidably snapped into the inside of the top of a protective shell. A baffle plate is fixedly connected inside the top of the protective shell. The baffle plate is located at the bottom of the top plate. Multiple energy storage springs and multiple pull ropes are fixedly connected to the bottom of the top plate. The bottom end of the energy storage spring is fixedly connected to the top of the baffle plate. The top end of the pull rope passes through the inside of the energy storage spring and is fixedly connected to the bottom of the top plate. The bottom end of the pull rope passes through the inside of the baffle plate and is fixedly connected to the top of one side of the counterweight box. An anti-slip component is installed on one side of the counterweight box to prevent the counterweight box from breaking and causing it to crash into the equipment.

[0007] Optionally, a placement box is fixedly connected to the inside of the top of the protective shell. The placement box is located at the bottom of the baffle plate, and a storage box is connected to the bottom of the placement box.

[0008] Optionally, a slope plate is fixedly connected to the inside of the top of the placement box, and a counterweight is slidably connected to the outside of the top of the pull rope. The counterweight is located between the placement box and the baffle plate. The pull rope is made of stainless steel. When the counterweight box moves to the bottom of the protective shell, the energy storage spring is in a compressed state.

[0009] Optionally, a cylinder is fixedly connected to one side of the inner wall of the protective shell, and a storage cylinder is fixedly connected to one side of the cylinder. A U-shaped plate is installed at the telescopic end of the cylinder. A Z-shaped plate is rotatably connected to the inside of the U-shaped plate via a shaft. An L-shaped rod is slidably engaged at the bottom of the storage cylinder. The end of the L-shaped rod away from the storage cylinder is rotatably connected to one side of the middle of the Z-shaped plate via a shaft. A stop bar is fixedly connected to one side of one end of the L-shaped rod. The bottom end of the storage cylinder is lower than the bottom end of the cylinder body. An alignment strip is fixedly connected to one side of the bottom of the counterweight box. A square... The orientation sensor is located at the bottom of the protective shell, and the position of the orientation sensor is located at the bottom of the cylinder body. The position of the sensing sensor is located on one side of the bottom of the chain. The output terminals of the orientation sensor and the sensing sensor are electrically connected to a microcontroller. The output terminal of the microcontroller is electrically connected to an electromagnetic reversing valve. The output terminal of the electromagnetic reversing valve is electrically connected to a cylinder. When the counterweight box moves to one side of the orientation sensor, the cylinder pushes the Z-shaped plate to move. When the counterweight box moves to one side of the sensing sensor, the cylinder drives the Z-shaped plate to retract.

[0010] Optionally, the anti-slip component includes a fixed plate installed on one side of the counterweight box, vertical plates fixedly connected to both sides of the bottom of the fixed plate, a connecting column slidably connected to the inside of the middle of the fixed plate, a telescopic column fixedly connected to the bottom of the connecting column through the inside of the fixed plate, and a stop ring fixedly connected to the outside of the bottom end of the telescopic column.

[0011] Optionally, a positioning spring is fixedly connected to the top of the abutment ring, the positioning spring is sleeved on the outside of the bottom end of the telescopic column, and the top end of the positioning spring is fixedly connected to the bottom of the fixing plate.

[0012] Optionally, a spring sheet is fixedly connected to the bottom of the abutment ring, and a connecting block is fixedly connected to the bottom end of the telescopic column through the interior of the abutment ring and the spring sheet. L-shaped plates are rotatably connected to both sides of the connecting block via shafts. A connecting plate is rotatably connected to the end of the L-shaped plate away from the connecting block via a shaft. The middle part of the L-shaped plate is rotatably connected to one side of the vertical plate via a shaft.

[0013] Optionally, the bottom of the two vertical plates is provided with insertion holes, and the end of the connecting plate away from the L-shaped plate passes through the insertion holes. The two sides inside the protective shell are respectively fixedly connected with toothed plates. The two toothed plates are respectively provided with multiple oblique tooth grooves on one side of the counterweight box. The end of the connecting plate away from the L-shaped plate is provided with a ramp, and the end of the connecting plate with the ramp engages with the inside of the oblique tooth groove.

[0014] Optionally, a sliding groove is provided on one side of the fixing plate, and a limiting plate is fixedly connected to one side of the counterweight box. The end of the limiting plate away from the counterweight box is slidably engaged with the inside of the sliding groove.

[0015] Optionally, a conveying roller is rotatably connected inside the arc-shaped shell via a shaft, and a traction belt is slidably connected outside the conveying roller. One end of the traction belt is fixedly connected to the top of the connecting column, and an alignment plate is fixedly connected to one side of the counterweight box. The alignment plate is located at the bottom of the connecting block.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up an energy storage component, the compression and release of the energy storage spring can be used to store and release part of the energy, thereby reducing the load on the drive equipment and reducing energy consumption. In use, the counterweight box will pull the top plate downward by pulling the rope, which will cause the top plate to compress the energy storage spring to store energy. When the sucker rod needs to move downward, the drive equipment will drive the counterweight box to rise. At this time, the rebound of multiple energy storage springs will reduce the force of the drive equipment to drive the counterweight box, thereby avoiding the problem that the drive equipment needs to consume a lot of energy to lift the counterweight box. At the same time, through the set placement box, when the counterweight box is lifted, the pull rope will be caused by the action of the counterweight block to retract into the storage box for collection, thereby avoiding the problem that the pull rope affects the lifting of the counterweight box.

[0018] By incorporating anti-slip components, the counterweight box can be effectively prevented from breaking down or falling out of control, thus avoiding damage to the equipment and increasing maintenance costs. This also improves the reliability of the system. When a break occurs at the counterweight box connection, the connecting plate automatically rebounds due to the spring plates and positioning springs, causing one end of the connecting plate to engage in the oblique toothed groove on one side of the toothed plate, thereby fixing the counterweight box in place and preventing it from suddenly falling and damaging the equipment. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the internal three-dimensional structure;

[0022] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the arc-shaped shell of the present invention;

[0023] Figure 4 This is a schematic diagram showing the connection between the energy storage spring and the pull rope of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the anti-slip component of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This is a schematic diagram of the side cross-sectional structure of the fixing plate of the present invention;

[0027] Figure 8 For the present invention Figure 4 Side view sectional structural schematic diagram;

[0028] Figure 9 This is an enlarged structural schematic diagram of the Z-shaped plate and alignment strip of the present invention;

[0029] Figure 10 This is a schematic diagram of the sensor connection of the present invention.

[0030] [Figure Labels]

[0031] 1. Base; 2. Drive unit; 3. Protective shell; 4. Chain; 5. Conveyor roller; 6. Traction belt; 7. Circular frame; 8. Fixing block; 9. Rotating shaft; 10. Roller; 11. Counterweight box; 12. Top plate; 13. Baffle plate; 14. Energy storage spring; 15. Pull rope; 16. Placement box; 17. Counterweight block; 18. Slope plate; 19. Storage box; 20. Connecting column; 21. Fixing plate; 22. 23. Telescopic column; 24. Positioning spring; 25. Stop ring; 26. Spring plate; 27. Connecting block; 28. L-shaped plate; 29. ​​Connecting plate; 30. Vertical plate; 31. Insertion hole; 32. Toothed plate; 33. Alignment plate; 34. Limiting plate; 35. Slide groove; 36. Arc-shaped shell; 37. Cylinder; 38. Storage tube; 39. U-shaped plate; 40. L-shaped rod; 41. Z-shaped plate; 42. Stop bar; 43. Alignment bar.

[0032] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0033] The spring-energy storage pumping unit provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0034] like Figures 1 to 10 As shown, an embodiment of the present invention provides a spring-energy storage type pumping unit, including a base 1. A drive device 2 and a protective shell 3 are fixedly connected to the top of the base 1. An arc-shaped shell 35 is fixedly connected to the top of the protective shell 3. A chain 4 is rotatably connected inside the protective shell 3. The output end of the drive device 2 passes through the side wall of the base 1 and is connected to one side of the bottom of the chain 4. A fixing block 8 is fixedly connected inside the chain 4. An annular frame 7 is installed on one side of the fixing block 8. A rotating shaft 9 is rotatably connected to one side of the fixing block 8. Rollers 10 are rotatably connected to the top and bottom of the rotating shaft 9, respectively. The rollers 10 are rotatably engaged inside the square hole inside the annular frame 7. A counterweight box 11 is fixedly connected to the top of the annular frame 7. An energy storage component for reducing the load on the drive device 2 and reducing energy consumption is provided inside the protective shell 3. The energy storage component includes... The protective shell 3 includes an upper top plate 12 that is slidably attached to the inside of the top of the protective shell 3. A baffle plate 13 is fixedly connected to the inside of the top of the protective shell 3. The baffle plate 13 is located at the bottom of the upper top plate 12. Multiple energy storage springs 14 and multiple pull ropes 15 are fixedly connected to the bottom of the upper top plate 12. The bottom end of the energy storage spring 14 is fixedly connected to the top of the baffle plate 13. The top end of the pull rope 15 passes through the inside of the energy storage spring 14 and is fixedly connected to the bottom of the upper top plate 12. The bottom end of the pull rope 15 passes through the inside of the baffle plate 13 and is fixedly connected to the top of one side of the counterweight box 11. An auxiliary component is installed inside the counterweight box 11. The auxiliary component is used to reduce the weight of the counterweight box 11 to further reduce energy consumption. An anti-slip component is installed on one side of the counterweight box 11. The anti-slip component is used to prevent the counterweight box 11 from breaking and causing the counterweight box 11 to crash into the equipment.

[0035] By utilizing the energy storage components, the compression and release of the energy storage spring 14 can achieve the storage and release of some energy, thereby reducing the load on the drive device 2 and reducing energy consumption. During use, the counterweight box 11 will pull the upper top plate 12 downward through the pull rope 15, which will cause the upper top plate 12 to compress the energy storage spring 14 to retract and store energy. When the sucker rod needs to move downward, the drive device 2 will drive the counterweight box 11 to rise. At this time, the rebound of multiple energy storage springs 14 will reduce the force required by the drive device 2 to drive the counterweight box 11, thus avoiding the problem that the drive device 2 needs to consume a lot of energy to lift the counterweight box 11. At the same time, through the placement box 16, when the counterweight box 11 is lifted, the pull rope 15 will be retracted into the storage box 19 for collection through the action of the counterweight block 17, thus avoiding the problem that the pull rope 15 affects the lifting of the counterweight box 11.

[0036] like Figures 1 to 8As shown, a placement box 16 is fixedly connected to the inside of the top of the protective shell 3. The placement box 16 is located at the bottom of the baffle plate 13. The bottom of the placement box 16 is connected to a storage box 19. A slope plate 18 is fixedly connected to the inside of the top of the placement box 16. A counterweight 17 is slidably connected to the outside of the top of the pull rope 15. The counterweight 17 is located between the placement box 16 and the baffle plate 13. The pull rope 15 is made of stainless steel. When the counterweight box 11 moves to the bottom of the protective shell 3, the energy storage spring 14 is in a compressed state.

[0037] With the energy storage spring 14 and pull rope 15 in place, during upward oil extraction, the drive device 2 first drives the chain 4 to rotate. At this time, the annular frame 7 moves downwards with the counterweight box 11. The traction belt 6 then drives the sucker rod upwards to extract oil. Simultaneously, as the counterweight box 11 moves downwards, it pulls the pull rope 15 downwards. When the counterweight box 11 is about to reach the bottom of the protective shell 3, the top of the pull rope 15 pulls the upper top plate 12 downwards, compressing the energy storage spring 14. When the counterweight box 11 reaches the bottom of the protective shell 3, the energy storage spring 14 is fully compressed. When the sucker rod needs to descend again to extract oil, the drive device 2 drives the chain 4 to move again, causing the annular frame 7 to move upwards with the counterweight box 11. The automatic rebound of the energy storage spring 14 causes it to push against the upper top plate 12 upwards, while the upper top plate 12 pulls the pull rope 15, causing the counterweight box 11 to... The upward movement avoids the problem of the drive device 2 needing to consume a lot of energy to lift the counterweight box 11, thereby reducing the energy loss of the drive device 2 and enabling the drive device 2 to be used for a long time. At the same time, after the counterweight box 11 moves upward a certain distance, the energy storage spring 14 is fully released. At this time, when the pull rope 15 will retract, the counterweight block 17 is provided. Since the counterweight block 17 is slidably connected to the outside of the pull rope 15, and a slope plate 18 and a storage box 19 are also provided, the counterweight block 17 pulls the pull rope 15 through the counterweight sliding, causing it to fall from the top of the slope plate 18 into the inside of the storage box 19, thereby retracting the pull rope 15 and preventing the pull rope 15 from affecting the movement of the counterweight box 11. At the same time, by setting the material of the pull rope 15 as stainless steel, the pull rope 15 has the characteristics of high strength, wear resistance, high tensile strength, and is suitable for bearing large loads, thus enabling the pull rope 15 to be used for a long time.

[0038] like Figures 1 to 10As shown, a cylinder 36 is fixedly connected to one side of the inner wall of the protective shell 3, and a storage cylinder 37 is fixedly connected to one side of the cylinder 36. A U-shaped plate 38 is installed at the telescopic end of the cylinder 36. A Z-shaped plate 40 is rotatably connected to the inside of the U-shaped plate 38 via a shaft. An L-shaped rod 39 is slidably engaged at the bottom of the storage cylinder 37. The end of the L-shaped rod 39 away from the storage cylinder 37 is rotatably connected to one side of the middle of the Z-shaped plate 40 via a shaft. A stop strip 41 is fixedly connected to one side of one end of the L-shaped rod 39. The bottom end of the storage cylinder 37 is lower than the bottom end of the cylinder 36 body. An alignment strip 42 is fixedly connected to one side of the bottom of the counterweight box 11. The protective shell... A direction sensor is installed on one side inside the protective shell 3, and a sensing sensor is installed at the bottom inside the protective shell 3. The direction sensor is located at the bottom of the cylinder 36 body, and the sensing sensor is located on one side of the bottom of the chain 4. The output terminals of the direction sensor and the sensing sensor are electrically connected to a microcontroller. The output terminal of the microcontroller is electrically connected to an electromagnetic reversing valve. The output terminal of the electromagnetic reversing valve is electrically connected to the cylinder 36. When the counterweight box 11 moves to the side of the direction sensor, the cylinder 36 pushes the Z-shaped plate 40 to move. When the counterweight box 11 moves to the side of the sensing sensor, the cylinder 36 drives the Z-shaped plate 40 to retract.

[0039] By using the cylinder 36, Z-shaped plate 40, and L-shaped rod 39, the motor does not need to independently provide energy when the energy storage spring 14 is compressed. The cylinder 36 shares part of the force pulling the counterweight 17. The thrust of the cylinder 36 can be provided by an external hydraulic system, working in cooperation with the motor to achieve energy saving. The cylinder 36 can work using an external air source, without needing to directly draw energy from the motor. This disperses the energy source during the compression of the energy storage spring 14, no longer relying entirely on the motor. Because the motor's energy consumption is significantly reduced, the burden on the motor during the compression of the energy storage spring 14 is reduced. Therefore, when the counterweight box 11 descends and compresses the energy storage spring 14, energy saving is achieved through the cylinder 36. Furthermore, since the cylinder 36 only needs intermittent use and does not require prolonged energy supply, it does not consume much energy, thus achieving energy saving. In use, such as... Figure 9 and Figure 10As shown, when the counterweight box 11 moves downwards to the side of the direction sensor, the energy storage spring 14 begins to compress. Simultaneously, the counterweight box 11, carrying the alignment bar 42, moves to the bottom of the Z-shaped plate 40. At this point, the direction sensor transmits a signal to the microcontroller, which activates the solenoid directional valve, causing the solenoid directional valve to open the cylinder 36. This causes the cylinder 36 to push the U-shaped plate 38 to move. When the U-shaped plate 38, carrying the Z-shaped plate 40, moves downwards, the stop bar 41 blocks the movement, causing the Z-shaped plate 40 and the U-shaped plate 38 to... In a vertical position, the other end of the Z-shaped plate 40 is prevented from tilting due to the lever principle. At this point, the other end of the Z-shaped plate 40 is parallel to the alignment bar 42. When the cylinder 36 moves the Z-shaped plate 40 downwards, the Z-shaped plate 40 contacts the top of the alignment bar 42, causing it to push the bar downwards. Simultaneously, the auxiliary counterweight box 11 moves downwards, thus enabling the cylinder 36 to assist the counterweight box 11 in compressing the energy storage spring 14, thereby avoiding the need for the motor to bear a large amount of energy. The problem of compressing the dynamic energy storage spring 14 achieves energy saving. Simultaneously, when the counterweight box 11 moves to the bottom of the chain 4, the energy storage spring 14 is in a fully compressed state. At this time, the induction sensor detects the counterweight box 11 and transmits a signal to the microcontroller, simultaneously activating the electromagnetic reversing valve again. This causes the cylinder 36 to pull the Z-shaped plate 40 to retract, facilitating the upward movement of the counterweight box 11. Furthermore, based on the height of the bottom of the storage cylinder 37 and the Z-shaped plate 40, when the cylinder 36 retracts the Z-shaped plate 40... At the same time, the L-shaped rod 39 will retract into the storage cylinder 37. Since the bottom of the storage cylinder 37 is lower than the cylinder 36 body, the L-shaped rod 39 will first retract into the storage cylinder 37. Meanwhile, the U-shaped plate 38 will also drive the Z-shaped plate 40 to continue to retract. At this time, through the lever principle, the U-shaped plate 38 will pull one end of the Z-shaped plate 40 to tilt up, thereby causing the other end of the Z-shaped plate 40 to be misaligned with the position of the alignment strip 42, thus avoiding the problem of the Z-shaped plate 40 blocking the movement of the alignment strip 42 when the counterweight box 11 moves upward.

[0040] like Figures 1 to 8As shown, the anti-slip assembly includes a fixed plate 21 installed on one side of the counterweight box 11. Vertical plates 29 are fixedly connected to both sides of the bottom of the fixed plate 21. A connecting post 20 is slidably connected to the inside of the middle of the fixed plate 21. A telescopic post 22 is fixedly connected to the bottom of the connecting post 20 through the inside of the fixed plate 21. A stop ring 24 is fixedly connected to the outside of the bottom end of the telescopic post 22. A positioning spring 23 is fixedly connected to the top of the stop ring 24. The positioning spring 23 is sleeved on the outside of the bottom end of the telescopic post 22. The top end of the positioning spring 23 is fixedly connected to the bottom of the fixed plate 21. A spring plate 25 is fixedly connected to the bottom of the stop ring 24. The bottom end of the telescopic post 22 passes through the inside of the stop ring 24 and the spring plate 25. A connecting block 26 is fixedly connected. L-shaped plates 27 are rotatably connected to both sides of the connecting block 26 via shafts. A connecting plate 28 is rotatably connected to the end of the L-shaped plate 27 away from the connecting block 26 via a shaft. The middle part of the L-shaped plate 27 is rotatably connected to one side of the vertical plate 29 via a shaft. Insertion holes 30 are opened inside the bottom of the two vertical plates 29. The end of the connecting plate 28 away from the L-shaped plate 27 passes through the interior of the insertion hole 30. Toothed plates 31 are fixedly connected to both sides inside the protective shell 3. Multiple oblique toothed grooves are opened on one side of the counterweight box 11. A ramp is opened at the end of the connecting plate 28 away from the L-shaped plate 27. The ramped end of the connecting plate 28 engages with the interior of the oblique toothed groove.

[0041] By incorporating anti-slip components, the counterweight box 11 can be effectively prevented from breaking or falling out of control, thus avoiding damage to the equipment and increasing maintenance costs. This also improves the reliability of the system. When a break occurs at the connection point of the counterweight box 11, the connecting plate 28 automatically rebounds due to the spring plate 25 and positioning spring 23, causing one end of the connecting plate 28 to engage in the oblique toothed groove on one side of the toothed plate 31, thereby fixing the counterweight box 11 again and preventing it from suddenly falling and damaging the equipment. When the counterweight box 11 rises, the alignment plate 32 pushes the connecting block 26 upwards. At this time, the connecting block 26 retracts due to the spring plate 25 and positioning spring 23, causing the connecting block 26 to pull one end of the L-shaped plate 27 to move. Simultaneously, one end of the connecting plate 28 will move away from the oblique toothed groove on one side of the toothed plate 31, thus causing the counterweight box 11 to... 1. The counterweight box 11 can be raised. Before the counterweight box 11 descends, the sucker rod pulls one end of the traction belt 6 by its own weight. At this time, the other end of the traction belt 6 will pull the positioning spring 23 and the spring plate 25 to move towards the bottom of the fixed plate 21. This will cause the L-shaped plate 27 to move away from the inside of the inclined tooth groove on the side of the toothed plate 31, thus causing the counterweight box 11 to move downward. If the connection between the connecting column 20 and the traction belt 6 is broken, the positioning spring 23 and the spring plate 25 will automatically rebound, causing the positioning spring 23 and the spring plate 25 to move downward with the stop ring 24. At the same time, the connecting block 26 moves downward, causing the L-shaped plate 27 to move one end of the connecting plate 28 to the inclined tooth groove on the side of the toothed plate 31 through the lever principle. This will cause the fixed plate 21 to fix the position of the counterweight box 11, thereby preventing the counterweight box 11 from falling.

[0042] like Figures 1 to 7 As shown, a sliding groove 34 is provided on one side of the fixed plate 21, and a limiting plate 33 is fixedly connected to one side of the counterweight box 11. The end of the limiting plate 33 away from the counterweight box 11 is slidably engaged with the inside of the sliding groove 34. A conveying roller 5 is rotatably connected to the inside of the arc-shaped shell 35 through a shaft. A traction belt 6 is slidably connected to the outside of the conveying roller 5. One end of the traction belt 6 is fixedly connected to the top of the connecting column 20. An alignment plate 32 is fixedly connected to one side of the counterweight box 11. The position of the alignment plate 32 is located at the bottom of the connecting block 26.

[0043] With the alignment plate 32, slide 34, and limiting plate 33 in place, when the counterweight box 11 moves to the bottom of the protective shell 3 and rises, the counterweight box 11 first slides inside the slide 34 through the limiting plate 33. At the same time, the alignment plate 32 will move upward and push the connecting block 26 upward, thereby causing the connecting block 26 to push against the spring plate 25 and the positioning spring 23 and retract upward. This causes the L-shaped plate 27 to move one end of the connecting plate 28 away from the inside of the inclined tooth groove on the side of the toothed plate 31 through the lever principle, thereby enabling the counterweight box 11 to move upward. This avoids the problem of the spring plate 25 and the positioning spring 23 affecting the movement of the counterweight box 11. At the same time, by setting the traction belt 6 to be connected to the connecting column 20, if the traction belt 6 is disconnected or the connection between the traction belt 6 and the connecting column 20 is broken, the protective component can prevent the counterweight box 11 from falling.

[0044] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A spring energy storage type pumping unit, comprising a base (1), the top of the base (1) is fixedly connected with a driving device (2) and a protective shell (3), the top of the protective shell (3) is fixedly connected with an arc-shaped shell (35), the inside of the protective shell (3) is rotatably connected with a chain (4), the output end of the driving device (2) penetrates through the side wall of the base (1) and is in transmission connection with one side of the bottom of the chain (4), the inside of the chain (4) is fixedly connected with a fixed block (8), one side of the fixed block (8) is mounted with an annular frame (7), one side of the fixed block (8) is rotatably connected with a rotating shaft (9), the top and the bottom of the rotating shaft (9) are rotatably connected with a roller (10) respectively, the roller (10) is rotatably clamped in the inside of the square hole in the inside of the annular frame (7), the top of the annular frame (7) is fixedly connected with a counterweight box (11), characterized in that, The inside of the protective shell (3) is provided with an energy storage assembly for reducing the load of the driving device (2) and reducing energy consumption, the energy storage assembly comprises an upper top plate (12) slidingly connected to the inside of the top of the protective shell (3), the inside of the top of the protective shell (3) is fixedly connected with a resisting plate (13), the position of the resisting plate (13) is located at the bottom of the upper top plate (12), the bottom of the upper top plate (12) is fixedly connected with a plurality of energy storage springs (14) and a plurality of pull ropes (15), the bottom end of the energy storage spring (14) is fixedly connected with the top of the resisting plate (13), the top end of the pull rope (15) penetrates the inside of the energy storage spring (14) and is fixedly connected with the bottom of the upper top plate (12), the bottom end of the pull rope (15) penetrates the inside of the resisting plate (13) and is fixedly connected with the top of one side of the counterweight box (11); The side of the counterweight box (11) is provided with an anti-skid assembly, which is used to prevent the counterweight box (11) from being disconnected and causing the counterweight box (11) to crash into the equipment; The inside of the protective shell (3) is provided with an energy storage assembly for reducing the load of the driving device (2) and reducing energy consumption, the energy storage assembly comprises an upper top plate (12) slidingly connected to the inside of the top of the protective shell (3), the inside of the top of the protective shell (3) is fixedly connected with a resisting plate (13), the position of the resisting plate (13) is located at the bottom of the upper top plate (12), the bottom of the upper top plate (12) is fixedly connected with a plurality of energy storage springs (14) and a plurality of pull ropes (15), the bottom end of the energy storage spring (14) is fixedly connected with the top of the resisting plate (13), the top end of the pull rope (15) penetrates the inside of the energy storage spring (14) and is fixedly connected with the bottom of the upper top plate (12), the bottom end of the pull rope (15) penetrates the inside of the resisting plate (13) and is fixedly connected with the top of one side of the counterweight box (11); The side of the counterweight box (11) is provided with an anti-skid assembly, which is used to prevent the counterweight box (11) from being disconnected and causing the counterweight box (11) to crash into the equipment; The bottom of the resisting ring (24) is fixedly connected with a spring sheet (25), the bottom of the telescopic column (22) penetrates the inside of the resisting ring (24) and the spring sheet (25) and is fixedly connected with a connecting block (26), the two sides of the connecting block (26) are respectively rotatably connected with L-shaped plates (27) through shafts, one end of the L-shaped plate (27) away from the connecting block (26) is rotatably connected with a connecting plate (28) through a shaft, and the middle part of the L-shaped plate (27) is rotatably connected with one side of the vertical plate (29) through a shaft; Two inside bottom of the vertical plate (29) are provided with a jack (30), the connecting plate (28) away from the L-shaped plate (27) one end penetrates the inside of the jack (30), the inside of the protective shell (3) both sides are respectively fixedly connected with the toothed plate (31), two the toothed plate (31) is respectively provided with a plurality of inclined tooth slot on one side of the counterweight box (11), the connecting plate (28) away from the L-shaped plate (27) one end is provided with a slope, the connecting plate (28) one end of setting slope and the inside of the inclined tooth slot are engaged.

2. The spring-energized pumping unit of claim 1, wherein, The inside top of the protective shell (3) is fixedly connected with a placing box (16), the position of the placing box (16) is located at the bottom of the resisting plate (13), and the bottom of the placing box (16) is communicated with a storage box (19).

3. The spring-energized pumping unit of claim 2, wherein, The inside top of the placing box (16) is fixedly connected with a slope plate (18), the outside top of the pull rope (15) is slidably connected with a counterweight (17), the position of the counterweight (17) is located between the placing box (16) and the resisting plate (13), the material of the pull rope (15) is stainless steel material, and the energy storage spring (14) is in a compressed state when the counterweight box (11) moves to the bottom of the protective shell (3).

4. The spring-energized pumping unit of claim 1, wherein, A direction sensor is installed on one side of the inside of the protective shell (3), a sensing sensor is installed on the bottom of the inside of the protective shell (3), the position of the direction sensor is located at the bottom of the cylinder (36) body, the position of the sensing sensor is located on one side of the bottom of the chain (4), the output ends of the direction sensor and the sensing sensor are electrically connected with a microcontroller, the output end of the microcontroller is electrically connected with an electromagnetic reversing valve, the output end of the electromagnetic reversing valve is electrically connected with the cylinder (36), the cylinder (36) drives the Z-shaped plate (40) to move when the counterweight box (11) moves to one side of the direction sensor, and the cylinder (36) drives the Z-shaped plate (40) to contract when the counterweight box (11) moves to one side of the sensing sensor.

5. The spring-energized pumping unit of claim 4, wherein, The top of the resisting ring (24) is fixedly connected with a positioning spring (23), the positioning spring (23) is sleeved outside the bottom end of the telescopic column (22), and the top end of the positioning spring (23) is fixedly connected with the bottom of the fixed plate (21).

6. The spring-energized pumping unit of claim 5, wherein, One side of the fixed plate (21) is provided with a sliding groove (34), one side of the counterweight box (11) is fixedly connected with a limiting plate (33), and one end of the limiting plate (33) away from the counterweight box (11) is slidably connected with the inside of the sliding groove (34).

7. The spring-energized pumping unit of claim 5, wherein, The inside of the arc-shaped shell (35) is rotatably connected with a conveying roller (5) through a shaft, the outside of the conveying roller (5) is slidably connected with a traction belt (6), one end of the traction belt (6) is fixedly connected with the top end of the connecting column (20), one side of the counterweight box (11) is fixedly connected with a positioning plate (32), and the positioning plate (32) is located at the bottom of the connecting block (26).

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