An integrated oil construction pumping unit capable of detecting the brake system

Abstract

The invention relates to the technical field of oil pumping units and discloses an integrated oil construction oil pumping unit capable of detecting a brake system, comprising a base and a packing box, wherein the packing box is arranged on the right side of the base, a range-extending component for compensating for stroke loss is arranged above the base, an anti-collision component for preventing the packing box from colliding with a suspension rope mechanism is arranged above the packing box, and a straightening component for straightening the oil pumping rod is arranged below the anti-collision component, when the crank connecting rod rotates, the rotating rod rotates in the opposite direction and drives the cross plate to slide under the restriction of the limit groove, thereby performing a range-extending operation on the oil pumping slide rod, and the range-extending operation can effectively compensate for the stroke loss caused by the compression deformation of the oil pumping slide rod, ensuring that the oil pumping slide rod can reach the theoretical stroke length when performing the oil pumping action, thereby improving the oil pumping efficiency of the oil pumping unit, and since the stroke loss is effectively compensated, the oil pumping unit can extract more oil per unit time.

Description

Technical Field

[0001] The invention relates to the technical field of oil pumping units, in particular to an integrated oil construction oil pumping unit capable of detecting a brake system. Background Art

[0002] The oil pump is mainly used to extract underground oil to the ground. It drives the pump or piston in the oil well through mechanical movement to extract oil from the oil well. It is one of the key equipment in oil extraction operations.

[0003] However, there are still some problems with the existing pumping units: First, during the operation of the pumping unit, stroke loss is a complex and difficult to avoid problem. In the downstroke stage, the sucker rod bears huge pressure and weight, and will inevitably be compressed. The actual length of the sucker rod will be shortened, resulting in a difference between the stroke length and the execution length, causing stroke loss. Similarly, in the upstroke stage, due to the previously accumulated compression deformation and the stress distribution inside the material, the sucker rod fails to fully stretch and recover immediately, further exacerbating the stroke loss. The existing technology attempts to reduce the stroke loss by optimizing the material of the sucker rod. Loss, however, optimization measures can reduce stroke loss to a certain extent, but due to the physical properties of the material itself and the complexity of the well environment, the sucker rod will still have slight compression and insufficient extension. Since the actual stroke length is less than the theoretical value, the amount of oil extracted by the pump per unit time is reduced, which not only affects the production capacity of oil extraction, but also increases the extraction cost. Secondly, in order to overcome the resistance caused by stroke loss, the pump needs to consume more energy to complete the same amount of work. In the long-term operation and a large number of repeated operations, its cumulative effect will have a huge impact on the overall performance and stability of the pump.

[0004] Secondly, during the long-term operation of the oil pump, due to the combined effect of multiple factors such as foundation settlement, wear of mechanical parts and slight deformation of the wellhead structure, the foundation often sinks or the wellhead rises, which leads to the distance between the packing box and the rope hanger becoming smaller and smaller. The change in spacing not only affects the normal operation of the oil pump, but also brings serious safety hazards. In order to solve this problem, the operator will use special tools to stretch or compress the braids to achieve the expected length so as to maintain the correct distance between the packing box and the rope hanger, and finally restart the oil pump to observe whether the distance between the packing box and the rope hanger is restored to a safe range. However, although this method of adjusting the braids can solve the problem to a certain extent, its stability performance is not ideal. Due to the differences in the material and manufacturing process of the braids, as well as various uncertain factors during the operation of the oil pump, the adjusted braid length is often difficult to maintain stability for a long time. Therefore, the operator needs to regularly check and readjust the length of the braids, which undoubtedly increases the workload and maintenance costs.

[0005] Thirdly, the prior art uses a centralizer to correct the sucker rod in the correct position. Although an elastic material is used to cope with the vibration and impact during the pumping process, the elastic centralizer's straightening effect is not ideal when the sucker rod tilts. Since the centralizer has no other additional functions except elastic straightening, it is unable to effectively correct and adjust the tilted sucker rod, which further causes the sucker rod to continue working in a tilted state, which not only aggravates the friction and wear between the centralizer and the sucker rod, but also makes the centralizer itself bear excessive pressure and load. At the same time, since the friction and wear between the centralizer and the tilted sucker rod are uneven, wear marks or grooves appear on the surface of the sucker rod. The wear marks not only affect the appearance quality of the sucker rod, but also have a negative impact on its structure and performance. In the long run, it will also cause safety problems such as fatigue fracture of the sucker rod.

[0006] Therefore, an integrated oil construction pumping unit capable of detecting the brake system is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide an integrated oil construction pumping unit capable of detecting a brake system, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated oil construction pumping unit capable of detecting a brake system, used for compensating for stroke loss, straightening sucker rods and preventing a suspension mechanism from colliding with a packing box, comprising a base and a packing box, the packing box being arranged on the right side of the base, a range-extending component for compensating for stroke loss being arranged above the base, an anti-collision component for preventing a collision between the packing box and the suspension mechanism being arranged above the packing box, and a straightening component for straightening the sucker rod being arranged below the anti-collision component.

[0009] Preferably, the upper surface of the base is fixedly connected to a reduction motor box, the upper surface of the base is fixedly connected to a fixed seat, the upper surface of the base is fixedly connected to a bracket, the top of the bracket is rotatably connected to a rocker, the end of the rocker away from the fixed seat is fixedly connected to a donkey head, and a slide groove is provided on the outer surface of the rocker.

[0010] Preferably, the range extender assembly includes a crank connecting rod, which is rotatably connected to the inside of a fixed seat, and an external stepper motor is symmetrically fixedly connected to the inside of the crank connecting rod, and the external stepper motor is electrically controlled to start and stop by an external controller, and the output shaft of the stepper motor is fixedly connected to a rotating rod, and the rotating rod is rotatably connected to the outer surface of the crank connecting rod, and the outer surface of the rotating rod is rotatably connected to a rotating gear, and the outer surface of the crank connecting rod is symmetrically provided with limiting grooves, and a cross plate is slidably connected to the inside of every two of the limiting grooves, and a tooth groove is provided in the middle of the cross plate, and the tooth groove and the rotating gear are meshed with each other, and the outer surface of the crank connecting rod is rectangular and equidistantly arranged and fixedly connected to four receiving seats, and the outer surface of each of the receiving seats is fixedly connected to three receiving rods, and the outer surface of the receiving rod close to the cross plate is sleeved with a needle bearing, and a connecting rotating rod is rotatably connected between the cross plate and the walking beam.

[0011] The top end of the connecting rope is fixedly connected to the top of the inner cavity of the slide groove, and the bottom end of the connecting rope is fixedly connected to the driving motor, and the output shaft of the driving motor is fixedly connected to the large wire drum, and the bottom of the large wire drum is fixedly connected to the small wire drum. The outer surface of the driving motor is fixedly connected to the support seat, and the bottom of the small wire drum is rotatably connected to the inner wall of the support seat. The outer surface of the support seat is rotatably connected to the first pulley, and the end of the support seat away from the first pulley is rotatably connected to the second pulley. The outer surface of the large wire drum is fixedly wound with a steel cable, and one end of the steel cable away from the large wire drum is fixedly wound on the outer surface of the small wire drum. The steel cable is slidably connected to the outer surfaces of the first pulley and the second pulley, and the bottom of the steel cable is slidably connected to the third pulley, and the outer surface of the third pulley is fixedly connected to a connecting shell, and the bottom of the connecting shell is symmetrically fixedly connected to a connecting rod, and the bottom of the connecting rod is fixedly connected to a rope suspension device, and the inside of the rope suspension device is fixedly connected to an oil pumping slide rod.

[0012] Preferably, the straightening assembly includes a straightener, the straightener is fixedly connected to the top of the packing box, the oil pumping slide rod is slidably connected to the inside of the straightener, the outer surface of the straightener is fixedly connected to an airflow ring, the airflow ring passes through the inside of the straightener and is respectively provided with a first through hole and a second through hole, the second through hole is located above the first through hole, the inner wall of the straightener is mirror-symmetrically provided with a motion groove, the two motion grooves are respectively slidably connected with a lower slide plate and an upper slide plate, the upper slide plate is located above the lower slide plate, a return spring is fixedly connected between the lower slide plate, the upper slide plate and the inner wall of the motion groove, and the outer surfaces of the upper and lower slide plates are linearly and equidistantly arranged and are fixedly connected with a plurality of friction spring blocks.

[0013] Preferably, a belt is provided in transmission connection between the crank connecting rod and the output shaft of the reduction motor box.

[0014] Preferably, the diameter ratio of the inner surface of the large wire drum and the small wire drum is ten to seven, one end of the steel cable is fixed to the outer surface of the large wire drum, and the remaining part is wound around the outer surface of the large wire drum, and extends and slides to the outer surfaces of the first pulley, the third pulley and the second pulley, the end of the steel cable away from the large wire drum is fixed to the outer surface of the small wire drum, and reversely wound around the outer surface of the small wire drum, the drive motor is electrically controlled to start and stop by an external controller, and an external ultrasonic sensor is fixedly connected to the bottom of the rope suspension device, and the external ultrasonic sensor is electrically connected to the external controller.

[0015] Preferably, the friction blocks on the outer surface of the lower slide are L-shaped, and the bent part thereof is inclined toward the side close to the airflow ring. The arrangement direction of the friction blocks on the outer surface of the upper slide is opposite to that of the friction blocks on the outer surface of the lower slide. The material of the straightener is polyamide VI, and the materials of the upper slide, lower slide and friction blocks are all thermoplastic polyurethane elastomer.

[0016] Preferably, the bottom of the packing box is connected to an underground oil well, the reduction motor box is electrically controlled to start and stop by an external controller, a hydraulic brake system is installed on the outer surface of the base, and the hydraulic brake system includes a brake, an oil cylinder, a brake valve, an oil tank and a pressure gauge, the hydraulic brake system is electrically controlled to start and stop by an external controller, and the pressure gauge is electrically connected to the external controller.

[0017] Preferably, a rod-type oil pumping assembly is fixedly connected below the oil pumping slide rod, and the rod-type oil pumping assembly includes a pump barrel assembly, a plunger assembly and a valve assembly. The pump barrel assembly is fixedly connected inside the underground oil well to form a main channel for oil pumping. The plunger assembly is fixedly connected to the bottom of the oil pumping slide rod and can slide up and down inside the pump barrel assembly to change the volume inside the pump barrel and achieve the purpose of oil pumping. The valve assembly is arranged at the upper and lower parts of the pump barrel assembly to control the process of oil inlet and outlet.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. When the crank connecting rod rotates, the rotating rod rotates in the opposite direction and drives the cross plate to slide under the restriction of the limit groove, thereby extending the stroke of the oil pumping slide rod. The extended stroke operation can effectively compensate for the stroke loss caused by the compression deformation of the oil pumping slide rod, ensuring that the oil pumping slide rod can reach the theoretical stroke length when performing the oil pumping action, thereby improving the oil pumping efficiency of the oil pumping unit. Since the stroke loss is effectively compensated, the oil pumping unit can extract more oil per unit time, thereby improving the production capacity and efficiency of oil extraction. Secondly, due to the improvement of the oil pumping efficiency, more oil pumping work can be completed in the same time, thereby reducing the investment cost of equipment and personnel. In addition, since the additional energy consumption caused by the stroke loss is reduced, the operating cost of the oil pumping unit is further reduced.

[0019] Compared with the existing technology, the range extender component has its unique advantages. Although the traditional method attempts to reduce stroke loss by optimizing materials, its effect is limited due to the physical properties of the material itself. The range extender component directly compensates for the stroke loss through the range extension operation, which not only has significant effects but also has better stability and reliability.

[0020] Among them: because the needle roller bearing has excellent load-bearing performance, it can effectively disperse and withstand these pressures to ensure the stable operation of the oil pump. At the same time, the needle roller bearing also plays a role in limiting and guiding the cross plate. The rolling friction coefficient of the needle roller bearing is small, and the needle roller bearing can also reduce the heat and energy consumption generated by friction, while extending the service life and improving the transmission efficiency of the range extender component. In addition, under the guiding effect of the needle roller bearing, the needle roller bearing can also ensure the correct position and trajectory of the sliding of the cross plate.

[0021] Among them: through the meshing of teeth, the rotating gear can move accurately along the trajectory of the tooth groove, avoiding slippage and misalignment, and the mutual meshing cooperation not only ensures the stable movement of the oil pumping slide rod, but also improves the accuracy and reliability of the movement. At the same time, due to the close cooperation between the teeth, it can also reduce the energy loss and heat accumulation caused by friction, thereby improving the overall efficiency of the oil pumping unit.

[0022] Among them: when the rotating gear moves to the inner wall end of the tooth groove, due to the close fit between the teeth and the effect of friction, the cross plate will stay for a short period of time. The short stay not only helps to reduce the vibration and noise caused by the impact, but also makes the movement of the oil pumping slide rod more stable and continuous.

[0023] 2. The distance change is monitored in real time by an external ultrasonic sensor, and the driving motor is driven to rotate to realize the winding of the third pulley, thereby realizing the adjustment of the distance between the rope hanger and the packing box. The rolling of the first pulley, the small wire drum and the third pulley not only improves the stability and reliability of the adjustment, but also reduces the length change caused by material differences and manufacturing process problems, thereby reducing the influence of various uncertain factors on the adjustment effect during the operation of the oil pump. At the same time, the operator does not need to frequently check and manually adjust the length of the braid, thereby reducing the workload and the safety risks caused by improper operation. In addition, by keeping the distance between the packing box and the rope hanger within a safe range, friction, wear and safety hazards caused by too small a distance are avoided, thereby improving the operating stability and safety of the oil pump.

[0024] Compared with existing technologies, the automatic adjustment design of the anti-collision component not only has a higher level of intelligence and automation, but can also respond to spacing changes in real time and make precise adjustments as needed, thus meeting the needs of modern industrial production for efficiency, stability and safety.

[0025] Among them: the steel cable is supported by the first pulley, the second pulley and the third pulley together, so that the tension of the steel cable can be evenly dispersed to three points, which helps to reduce the vibration and wear caused by uneven tension of the steel cable. At the same time, the first pulley, the second pulley and the third pulley are arranged in a triangular layout to form a stable support, so that the steel cable can maintain a more stable motion trajectory during movement. In addition, the design of the three pulleys increases the friction between the steel cable and the steel cable, thereby maintaining stable movement of the steel cable.

[0026] Among them: because the steel cable moves in a triangular trajectory, it helps to reduce the bending and twisting of the steel cable during the movement, thereby reducing the vibration caused by the bending and twisting of the steel cable.

[0027] Among them: because the steel cable is fixedly wound in two directions on the large wire drum and the small wire drum, the steel cable can evenly disperse the force when subjected to external force, and the opposite design can offset part of the external force, thereby reducing stress concentration. At the same time, because the steel cable is effectively supported and fixed in two directions, the anti-collision component can withstand greater tension and pressure, which is of great significance in coping with complex work and harsh working conditions.

[0028] 3. The movement of the oil pumping slide rod relies on friction to drive the lower slide plate and the upper slide plate to slide. Each stroke of the oil pumping slide rod can only drive one slide plate to slide continuously, and the slide plate is limited by the motion groove during the sliding process, and it is ensured that it cannot continue to move in the same stroke after resetting. First of all, the straightening assembly improves the ability of the straightener to correct the inclination of the oil pumping slide rod, ensuring that the oil pumping slide rod always maintains the correct position during the working process, thereby effectively reducing the friction and wear between the straightener and the oil pumping slide rod. Secondly, due to the limit design of the slide plate, the pressure and load on the straightener itself are reasonably dispersed, extending the service life. In addition, the straightening assembly also improves the wear on the surface of the oil pumping slide rod, avoiding the wear marks or additional grooves caused by uneven friction, thereby improving the appearance quality and structural performance of the oil pumping slide rod.

[0029] Compared with the existing technology, the righting assembly not only retains the basic function of elastic righting, but also realizes more effective correction of the inclined pumping slide rod by introducing a sliding righting mechanism, which not only reduces maintenance costs but also improves the safety and efficiency of pumping operations.

[0030] Among them: the L-shaped design of the friction block enables it to disperse the impact force more effectively when it contacts the oil pumping slide rod, reduce the single-point force, and thus extend the service life; secondly, the design of the bent part tilted toward the side close to the air flow ring enables the oil pumping slide rod to contact the friction block more smoothly when it is in the downstroke, slide along its shape, and reduce wear.

[0031] Among them: when the oil pumping slide rod drives the lower slide plate to move, the air flow ring is exposed through the first through hole, and when the oil pumping slide rod approaches the edge of the first through hole, the oil pumping slide rod will compress the air at the edge of the first through hole, so that the speed of this part of the air increases. According to Bernoulli's principle, the increase in the speed of this part of the air will cause its static pressure to decrease, thereby forming a negative pressure area at the edge of the first through hole, and the negative pressure effect helps to attract and fix the oil pumping slide rod, so that it maintains a stable position during the oil pumping process. Therefore, the straightening assembly not only improves the stability of oil pumping, but also helps to reduce the risk of reduced oil pumping efficiency or equipment damage due to unstable position of the oil pumping slide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front perspective schematic diagram of the main structure of the present invention.

[0033] Figure 2 For the present invention Figure 1 A is an enlarged schematic diagram of the structure in the middle.

[0034] Figure 3 It is an exploded stereoscopic schematic diagram of the crank connecting rod and the cross plate of the present invention.

[0035] Figure 4 It is a rear perspective schematic diagram of the main structure of the present invention.

[0036] Figure 5 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0037] Figure 6 For the present invention Figure 4 The structure at C in the middle is enlarged and shown in three dimensions.

[0038] Figure 7 It is a cross-sectional stereoscopic schematic diagram of the main structure of the present invention.

[0039] Figure 8 For the present invention Figure 7 Enlarged three-dimensional schematic diagram of the structure at point D in the middle.

[0040] Fig. 9 For the present invention Figure 8 Enlarged three-dimensional schematic diagram of the structure at E in the middle.

[0041] Fig.10 It is an exploded stereoscopic schematic diagram of the crank connecting rod and the rotating rod of the present invention.

[0042] In the figure: 11, base; 12, packing box; 13, reduction motor box; 14, fixed seat; 15, bracket; 16, walking beam; 17, donkey head.

[0043] 2. Range extender assembly; 21. Crank connecting rod; 22. Rotating rod; 23. Rotating gear; 24. Limiting groove; 25. Cross plate; 26. Tooth groove; 27. Socket; 28. Socket rod; 29. ​​Needle roller bearing; 210. Connecting rotary rod.

[0044] 3. Anti-collision assembly; 31. Connecting rope; 32. Driving motor; 33. Large wire drum; 34. Small wire drum; 35. Support seat; 36. First pulley; 37. Second pulley; 38. Steel cable; 39. Third pulley; 310. Connecting shell.

[0045] 4. Rope hanger; 5. Pumping slide rod; 6. Connecting rod.

[0046] 7. Centralizing assembly; 71. Centralizing device; 72. Airflow ring; 73. First through hole; 74. Second through hole; 75. Moving groove; 76. Lower slide plate; 77. Upper slide plate; 78. Return spring; 79. Friction block. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figures 1 to 10 The present invention provides an embodiment: an integrated oil construction pumping unit capable of detecting a brake system, used for compensating for stroke loss, straightening a sucker rod, and preventing a suspension mechanism from colliding with a packing box 12, comprising a base 11 and a packing box 12, the packing box 12 being arranged on the right side of the base 11, a range-extending component 2 for compensating for stroke loss being arranged above the base 11, an anti-collision component 3 for preventing the packing box 12 from colliding with the suspension mechanism being arranged above the packing box 12, and a straightening component 7 for straightening the sucker rod being arranged below the anti-collision component 3.

[0049] The upper surface of the base 11 is fixedly connected to a reduction motor box 13, the upper surface of the base 11 is fixedly connected to a fixing seat 14, the upper surface of the base 11 is fixedly connected to a bracket 15, the top of the bracket 15 is rotatably connected to a rocker 16, the end of the rocker 16 away from the fixing seat 14 is fixedly connected to a donkey head 17, and a slide groove is provided on the outer surface of the rocker 16.

[0050] The range extender assembly 2 includes a crank connecting rod 21, which is rotatably connected to the inside of the fixed seat 14, and an external stepping motor is symmetrically fixedly connected to the inside of the crank connecting rod 21. The external stepping motor is electrically controlled to start and shut down by an external controller. The output shaft of the stepping motor is fixedly connected to a rotating rod 22, and the rotating rod 22 is rotatably connected to the outer surface of the crank connecting rod 21. The outer surface of the rotating rod 22 is rotatably connected to a rotating gear 23. The outer surface of the crank connecting rod 21 is symmetrically provided with a limiting groove 24, each A cross plate 25 is slidably connected inside the two limit grooves 24, and a tooth groove 26 is opened in the middle of the cross plate 25. The tooth groove 26 is meshed with the rotating gear 23. The outer surface of the crank connecting rod 21 is rectangular and equidistantly arranged and fixedly connected with four receiving seats 27. The outer surface of each receiving seat 27 is fixedly connected with three receiving rods 28. The outer surface of the receiving rod 28 close to the cross plate 25 is sleeved with a needle bearing 29. A connecting rod 210 is rotatably connected between the cross plate 25 and the rocker beam 16.

[0051] The anti-collision component 3 includes a connecting rope 31, the top of the connecting rope 31 is fixedly connected to the top of the inner cavity of the slide groove, the bottom of the connecting rope 31 is fixedly connected to the driving motor 32, the output shaft of the driving motor 32 is fixedly connected to the large wire drum 33, the bottom of the large wire drum 33 is fixedly connected to the small wire drum 34, the outer surface of the driving motor 32 is fixedly connected to the supporting seat 35, the bottom of the small wire drum 34 is rotatably connected to the inner wall of the supporting seat 35, the outer surface of the supporting seat 35 is rotatably connected to the first pulley 36, and the end of the supporting seat 35 away from the first pulley 36 is rotatably connected to the first pulley 36. Two pulleys 37, a steel cable 38 is fixedly wound on the outer surface of the large wire drum 33, and one end of the steel cable 38 away from the large wire drum 33 is fixedly wound on the outer surface of the small wire drum 34. The steel cable 38 is slidably connected to the outer surfaces of the first pulley 36 and the second pulley 37. The bottom of the steel cable 38 is slidably connected to the third pulley 39, and the outer surface of the third pulley 39 is fixedly connected to the connecting shell 310. The bottom of the connecting shell 310 is symmetrically fixedly connected to the connecting rod 6, and the bottom of the connecting rod 6 is fixedly connected to the rope hanger 4, and the inside of the rope hanger 4 is fixedly connected to the oil pumping slide rod 5.

[0052] The straightening assembly 7 includes a straightening device 71, which is fixedly connected to the top of the packing box 12, and the oil pumping slide rod 5 is slidably connected to the inside of the straightening device 71. The outer surface of the straightening device 71 is fixedly connected with an airflow ring 72, and the airflow ring 72 penetrates the inside of the straightening device 71 and is respectively provided with a first through hole 73 and a second through hole 74, and the second through hole 74 is located above the first through hole 73. The inner wall of the straightening device 71 is mirror-symmetrically provided with a motion groove 75, and the two motion grooves 75 are respectively slidably connected with a lower slide plate 76 and an upper slide plate 77, and the upper slide plate 77 is located above the lower slide plate 76. A return spring 78 is fixedly connected between the lower slide plate 76, the upper slide plate 77 and the inner wall of the motion groove 75, and the outer surfaces of the upper slide plate 77 and the lower slide plate 76 are linearly and equidistantly arranged and are fixedly connected with a plurality of friction spring blocks 79.

[0053] A belt is connected between the crank connecting rod 21 and the output shaft of the reduction motor box 13.

[0054] The diameter ratio of the inner surface of the large wire drum 33 and the small wire drum 34 is ten to seven. One end of the steel cable 38 is fixed on the outer surface of the large wire drum 33, and the remaining part is wound around the outer surface of the large wire drum 33, and extends and slides to the outer surfaces of the first pulley 36, the third pulley 39 and the second pulley 37. The end of the steel cable 38 away from the large wire drum 33 is fixed on the outer surface of the small wire drum 34, and reversely wound around the outer surface of the small wire drum 34. The drive motor 32 is electrically controlled to start and stop by an external controller. An external ultrasonic sensor is fixedly connected to the bottom of the rope suspension device 4, and the external ultrasonic sensor is electrically connected to the external controller.

[0055] The friction spring blocks 79 on the outer surface of the lower slide plate 76 are L-shaped, and the bent portion thereof is inclined toward the side close to the airflow ring 72. The friction spring blocks 79 on the outer surface of the upper slide plate 77 are arranged in the opposite direction to the friction spring blocks 79 on the outer surface of the lower slide plate 76. The material of the stabilizer 71 is polyamide VI, and the materials of the upper slide plate 77, the lower slide plate 76 and the friction spring blocks 79 are all thermoplastic polyurethane elastomer.

[0056] The bottom of the packing box 12 is connected to the underground oil well, the reduction motor box 13 is electrically controlled to start and stop by an external controller, a hydraulic brake system is installed on the outer surface of the base 11, and the hydraulic brake system includes a brake, an oil cylinder, a brake valve, an oil tank and a pressure gauge. The hydraulic brake system is electrically controlled to start and stop by an external controller, and the pressure gauge is electrically connected to the external controller.

[0057] A rod-type pumping assembly is fixedly connected below the pumping slide rod 5, and the rod-type pumping assembly includes a pump barrel assembly, a plunger assembly and a valve assembly. The pump barrel assembly is fixedly connected inside the underground oil well to form a main channel for pumping oil. The plunger assembly is fixedly connected to the bottom of the pumping slide rod 5 and can slide up and down inside the pump barrel assembly to change the volume inside the pump barrel and achieve the purpose of pumping oil. The valve assembly is arranged at the upper and lower parts of the pump barrel assembly to control the process of oil inlet and outlet.

[0058] Wherein: when the external controller electrically controls the reduction motor box 13 to start, the rotation directions of the external stepping motor and the reduction motor box 13 are set to opposite directions.

[0059] In combination with the above-mentioned implementation, the working principle of the present invention is as follows: The following is the initial state: at this time, the rotating gear 23 is located in the middle of the tooth groove 26, the cross plate 25 is located in the middle of the limit groove 24, the cross plate 25 is in conflict with the needle bearing 29 closest to the base 11, the oil pumping slide 5 has not completely entered the stabilizer 71, the upper slide plate 77 is located below the moving groove 75, the lower slide plate 76 is located above the moving groove 75, the reset spring 78 is not compressed, the first through hole 73 and the second through hole 74 are blocked by the lower slide plate 76 and the upper slide plate 77 respectively, at this time, the friction block 79 is not elastically deformed, and the brake is in conflict with the crank connecting rod 21 at this time.

[0060] The following are the specific steps of the operation: wherein, the restriction of the brake system on the crank connecting rod 21 is released and the brake system is tested: Figure 1 and Figure 4 As shown, the operator manually controls the external controller and sends an electrical signal to the hydraulic brake system. After receiving the signal, the brake valve starts to work and controls the opening of the oil circuit, so that the hydraulic oil in the cylinder can flow. As the hydraulic oil flows, the cylinder converts hydraulic energy into mechanical energy, pushing the brake connected to it to operate. At this time, the brake releases the braking force on the crank connecting rod 21, removing the braking restriction.

[0061] The pressure gauge starts working and monitors the pressure value inside the hydraulic brake system in real time. Once the pressure value inside the hydraulic brake system is lower than the specified value, the pressure gauge will send an electrical signal to the external controller to prompt the operator that there is a fault in the hydraulic brake system.

[0062] Among them, the compensation of the 5-stroke pumping slide rod and the extraction of oil: Figure 1 and Fig. 9 As shown, the operator manually controls the external controller and electrically controls the start of the reduction motor box 13 and the external stepper motor. At this time, the output shaft of the reduction motor box 13 rotates clockwise toward the side close to the fixed seat 14, while the output shaft of the external stepper motor rotates counterclockwise in the opposite direction.

[0063] At this time, the reduction motor box 13 drives the crank connecting rod 21 on the fixing seat 14 to rotate synchronously through the belt, and at the same time, the output shaft of the external stepping motor drives the rotating rod 22 to rotate in the opposite direction to the crank connecting rod 21.

[0064] like Figures 1 to 3As shown, since the crank connecting rod 21 rotates clockwise, the crank connecting rod 21 will drive the other components of the range extender assembly 2 to rotate synchronously clockwise. At this time, under the connection of the connecting rod 210, the rotation of the crank connecting rod 21 will drive the walking beam 16 and the donkey head 17 to gradually rotate toward the side close to the packing box 12. At the same time, under the action of the rotation of the donkey head 17, the connecting rope 31, the rope hanger 4 and the oil pumping slide rod 5 gradually move toward the bottom of the packing box 12. At this time, the oil pumping slide rod 5 begins to be in the downstroke.

[0065] In the above process, the external stepper motor drives the rotating rod 22 to rotate in the opposite direction. At this time, the rotating rod 22 drives the rotating gear 23 to rotate synchronously. Under the action of the engagement between the rotating gear 23 and the tooth groove 26, not only the rotating gear 23 is prevented from slipping inside the cross plate 25, but also the cross plate 25 can move according to the predetermined trajectory by increasing the contact area through the engagement.

[0066] At the same time, the cross plate 25 tends to rotate synchronously, but because the cross plate 25 is restricted by the limit groove 24 and the needle bearing 29 and can only slide, the cross plate 25 will slide in the limit groove 24 toward the side close to the connecting rod 210, and at the same time, the middle edge of the cross plate 25 no longer conflicts with the needle bearing 29 away from the connecting rod 210. At this time, under the sliding guiding action of the needle bearing 29, the cross plate 25 will slide toward the side close to the connecting rod 210 while following the rotation of the crank connecting rod 21. As the cross plate 25 slides, the position of the connecting rod 210 relative to the crank connecting rod 21 also changes, that is, the connecting rod 210 itself slides towards the side away from the needle bearing 29 under the sliding of the cross plate 25.

[0067] Furthermore, the change in the position of the connecting rotary rod 210 will additionally push the rocker arm 16 to rotate, thereby increasing the rotation amplitude of the rocker arm 16, and the donkey head 17 will also synchronously increase its rotation amplitude as the rotation amplitude of the rocker arm 16 increases, and then the donkey head 17 drives the donkey head 17 and the connecting rope 31 to move in a larger range, and finally the rope hanger 4 and the oil pumping slide rod 5 obtain a larger stroke.

[0068] However, when the pumping slide 5 is in the downstroke, it will be elastically compressed due to the huge pressure and weight it bears as well as the pressure in the oil well, and the actual length of the pumping slide 5 will be shortened, further resulting in stroke loss. The change in the position of the connecting rotary rod 210 actually increases the range of the pumping slide 5, and even if the pumping slide 5 with the increased range is compressed, its movement amplitude is increased, that is, the increase in the movement amplitude compensates for the problem of stroke loss caused by the compression of the pumping slide 5 by external force factors.

[0069] The movement of the pumping slide rod 5 will drive the plunger assembly to move downward in the pump barrel assembly. At this time, the internal pressure of the pump barrel assembly increases, and the movement of the plunger assembly will discharge the oil in the pump barrel assembly through the valve assembly, thereby pumping the oil from the underground oil well to the ground.

[0070] As the output shaft of the reduction motor box 13 and the output shaft of the external stepper motor continue to rotate, the crank connecting rod 21 drives the range extender assembly 2 to rotate toward the side close to the reduction motor box 13, and the crank connecting rod 21 will drive the connecting rotating rod 210 to pull the walking beam 16 to rotate toward the side close to the reduction motor box 13. At the same time, the walking beam 16 drives the donkey head 17 to rotate synchronously, and the donkey head 17 will drive the connecting rope 31, the rope hanger 4, and the oil pumping slide rod 5 to move toward the top of the packing box 12.

[0071] At this time, the rotating gear 23 moves to the end of the tooth groove 26. Due to inertia and the interaction force between mechanical parts, the cross plate 25 will remain stationary for a short time until it receives sufficient driving force from the rotating gear 23 and continues to slide. The short stay of the cross plate 25 will make the stroke of the oil pumping slide rod 5 no longer change, and give the oil pumping slide rod 5 time to stretch elastically, thereby reducing the impact and vibration caused by rapid switching, thereby protecting the stability of the mechanical system and extending its service life.

[0072] Subsequently, under the action of the output shaft of the external stepper motor, the rotating rod 22 will drive the rotating gear 23 to slide in the tooth groove 26 toward the other end side, and then the cross plate 25 is subjected to the external force of the rotating gear 23, and the cross plate 25 will slide in the limit groove 24 and the surface of the needle bearing 29 toward the side away from the connecting rod 210. Furthermore, at this time, the position of the connecting rod 210 changes again relative to the crank connecting rod 21, that is, the connecting rod 210 is now located on the side close to the needle bearing 29, and the change in the position of the connecting rod 210 causes the actual stroke of the oil pumping slide 5 to be shortened. At this time, the oil pumping slide 5 is in the upstroke, and the shortening of the actual stroke of the upstroke helps to reduce the energy consumption in the oil pumping process, and at the same time, it can also reduce the resistance of the oil pumping slide 5 in the up and down reciprocating motion, thereby reducing the energy consumption of the reduction motor box 13, and the oil pumping slide 5 will be elastically stretched when it is in the upstroke. By shortening the upstroke, the oil pumping slide 5 can have enough time to elastically stretch and reach the actually planned stroke position.

[0073] During this process, the upward movement of the oil pumping slide rod 5 drives the plunger assembly to move upward in the pump barrel assembly. At this time, the pressure in the pump barrel assembly decreases, and the oil enters the pump barrel assembly through the valve assembly. As the plunger assembly rises, the oil is gradually pushed to the top of the pump barrel assembly.

[0074] Among them, the straightening of the oil pumping slide rod 5: It can be seen from the above steps that the oil pumping slide rod 5 will be in a downstroke first, and then the oil pumping slide rod 5 will be in an upstroke.

[0075] like Figure 4 , Figure 6 as well as Figure 7 and Figure 8 As shown, when the oil pumping slide rod 5 is in the down stroke, the oil pumping slide rod 5 slides toward the packing box 12 inside the stabilizer 71. During this process, the oil pumping slide rod 5 will contact the upper end of the bent part of the friction block 79 on the surface of the upper slide plate 77. Since the friction block 79 has good elasticity and wear resistance, when the oil pumping slide rod 5 contacts the upper end of the bent part of the friction block 79, the friction block 79 will elastically deform.

[0076] like Figure 8 As shown, from the perspective of the lever principle, the bending point of the friction block 79 can be regarded as the fulcrum of the lever. When the upper end of the bent part of the friction block 79 contacts the oil extraction slide 5 and elastically deforms, the upper end of the friction block 79 is subjected to a downward force. Based on the lever principle, the lower end of the friction block 79, that is, the long side of the friction block 79 will be subjected to an upward force, and this force will drive the long side to move toward the side close to the oil extraction slide 5 until the long side of the friction block 79 fits against the surface of the oil extraction slide 5.

[0077] From the perspective of the internal force of the friction block 79 material, when the oil pumping slide 5 squeezes the upper end of the bent portion of the friction block 79, the molecules inside the material are squeezed, resulting in a redistribution of stress inside the material, and the stress of the bent portion of the friction block 79 is concentrated. In order to balance the stress, the material of the friction block 79 itself will release the stress through deformation. If the long side of the friction block 79 is bent toward the side away from the oil pumping slide 5, the stress suffered by the bending point will be more concentrated. Further, in order to balance the stress, the long side of the friction block 79 will deform toward the side close to the oil pumping slide 5 and fit against the surface of the oil pumping slide 5. The elastic deformation of the friction block 79 increases the contact area between the friction block 79 and the surface of the oil pumping slide 5, thereby increasing the friction between the two, and further improving the straightening effect of the oil pumping slide 5.

[0078] However, at this time, the upper slide plate 77 is restricted by the moving groove 75 and cannot move downward with the oil pumping slide rod 5. Therefore, as the oil pumping slide rod 5 continues to move downward, the oil pumping slide rod 5 will gradually contact more friction blocks 79 on the outer surface of the upper slide plate 77 and squeeze these friction blocks 79. When the oil pumping slide rod 5 moves to contact the friction blocks 79 on the surface of the lower slide plate 76, since the arrangement direction of the friction blocks 79 on the surface of the lower slide plate 76 is opposite to that of the friction blocks 79 on the surface of the upper slide plate 77, the oil pumping slide rod 5 will squeeze the bent portion of the friction blocks 79 on the surface of the lower slide plate 76. This squeezing causes the bent portion of the friction blocks 79 to undergo elastic deformation, further increasing the contact area and friction between the friction blocks 79 and the oil pumping slide rod 5.

[0079] As the friction between the friction block 79 and the oil extraction slide 5 increases, the oil extraction slide 5 begins to drive the lower slide 76 to move downward synchronously. Due to the elastic deformation of the friction block 79 and the increased contact area, the interaction between the oil extraction slide 5 and the lower slide 76 becomes closer, thereby achieving the dragging of the oil extraction slide 5 on the lower slide 76.

[0080] As the lower slide plate 76 moves, the return spring 78 at the lower slide plate 76 is elastically compressed, and the first through hole 73 blocked by the lower slide plate 76 will be exposed. Based on the Bernoulli principle, in the steady flow of incompressible fluid, the pressure is small where the flow rate is fast, and the pressure is large where the flow rate is slow. That is, when the oil pumping slide rod 5 passes through the edge of the first through hole 73, the oil pumping slide rod 5 will compress the air at the edge of the first through hole 73 and increase the speed of this part of the air. The increase in the speed of this part of the air will cause its static pressure to decrease, thereby forming a negative pressure area at the edge of the first through hole 73. This negative pressure area will produce an attraction for the oil pumping slide rod 5, which helps to further fix and stabilize the position of the oil pumping slide rod 5.

[0081] Similarly, when the oil pumping slide 5 is in the upward stroke, the second through hole 74 will also be exposed, and the negative pressure effect will also be obtained. When the oil pumping slide 5 moves, the second through hole 74 and the first through hole 73 will both produce a negative pressure adsorption effect on the oil pumping slide 5, thereby maintaining the stability of the oil pumping slide 5 and straightening it.

[0082] Among them, the adjustment of the position of the suspension rope 4 is as follows: Figure 4 and Figure 5 As shown, as the oil pump is used for a long time, the continuous movement of the pumping slide rod 5 will cause the wellhead to rise and the foundation to sink. At this time, the distance between the packing box 12 and the rope hanger 4 is constantly reduced.

[0083] As the distance between the cables decreases, the external ultrasonic sensor detects that the distance between the cables is too small. At this time, the external ultrasonic sensor will send an electrical signal to the external controller. At this time, the external controller will electrically control the drive motor 32 to start, and the rotation of the output shaft of the drive motor 32 will drive the large wire drum 33 and the small wire drum 34 to rotate synchronously. At this time, the large wire drum 33 rotates, and the steel cable 38 on the large wire drum 33 will be tightened due to the centripetal force applied to it by the large wire drum 33. At this time, the steel cable 38 on the large wire drum 33 is in a state of winding. Similarly, the rotation of the large wire drum 33 drives the small wire drum 34 to rotate synchronously, and the winding direction of the steel cable 38 on the small wire drum 34 is opposite to the winding direction of the steel cable 38 on the large wire drum 33, so that the steel cable 38 on the small wire drum 34 is no longer affected by the centripetal force from the small wire drum The large wire drum 33 is relaxed by the centripetal force exerted on it by the large wire drum 34. At this time, the steel cable 38 on the small wire drum 34 is in a state of paying out the wire. Due to the diameter difference between the large wire drum 33 and the small wire drum 34, the speed at which the large wire drum 33 takes up the wire is greater than the speed at which the small wire drum 34 pays out the wire. As a result, the length of the steel cable 38 released from the surface of the small wire drum 34 is greater than the length of the steel cable 38 tightened by the large wire drum 33. Furthermore, at this time, the length of the steel cable 38 exposed to the outside gradually decreases. During this process, the large wire drum 33 rotates to generate a torque, which attempts to keep the large wire drum 33 in a stable rotation state, and the small wire drum 34 also generates an opposite torque when rotating. Then the two opposite torques balance each other and keep the large wire drum 33 and the small wire drum 34 stable during rotation.

[0084] In the above process, the steel cable 38 slides on the surfaces of the first pulley 36, the second pulley 37 and the third pulley 39, that is, the oil pumping slide rod 5, the second pulley 37 and the third pulley 39 jointly support the steel cable 38, and then the tension of the steel cable 38 is evenly dispersed to three points, which helps to reduce the vibration and wear caused by the uneven tension of the steel cable 38. At the same time, the first pulley 36, the second pulley 37 and the third pulley 39 are arranged in a triangular layout to form a stable support. Further, the steel cable 38 can maintain a more stable motion trajectory during the movement. In addition, the design of the three pulleys increases the friction between the steel cable 38 and the steel cable 38, thereby maintaining the stable movement of the steel cable 38.

[0085] At the same time, because the steel cable 38 is fixedly wound in two directions on the large wire drum 33 and the small wire drum 34, the steel cable 38 can evenly disperse the force when subjected to external force, and the opposite design can offset part of the external force, thereby reducing stress concentration. At the same time, because the steel cable 38 is effectively supported and fixed in two directions, the anti-collision component 3 can withstand greater tension and pressure, which is of great significance in coping with complex work and working requirements under harsh conditions.

[0086] More specifically, the reduction in the length of the steel cable 38 exposed to the outside world will drive the third pulley 39, the connecting shell 310, the connecting rod 6 and the rope hanger 4 to move toward the top of the packing box 12. At this time, the pumping slide 5 fixed inside the rope hanger 4 also rises synchronously, thereby preventing the accident of collision between the rope hanger 4 and the packing box 12 due to the upward movement of the wellhead and the sinking of the foundation.

[0087] When the distance between the rope hanger 4 and the packing box 12 is adjusted, the external ultrasonic sensor will send an electrical signal to the external controller, and the external controller will electrically control the drive motor 32 to turn off.

[0088] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated oil construction pumping unit capable of detecting a brake system, used for compensating for stroke loss, straightening a pumping rod, and preventing a suspension rope mechanism from colliding with a packing box (12), comprising a base (11) and a packing box (12), wherein the packing box (12) is arranged on the right side of the base (11), and characterized in that: A range-extending component (2) for compensating for stroke loss is arranged above the base (11); an anti-collision component (3) for preventing the packing box (12) from colliding with the suspension rope mechanism is arranged above the packing box (12); a straightening component (7) for straightening the sucker rod is arranged below the anti-collision component (3); the range-extending component (2) comprises a crank connecting rod (21); the crank connecting rod (21) is rotatably connected to the inside of the fixing seat (14); an external stepping motor is symmetrically fixedly connected to the inside of the crank connecting rod (21); the external stepping motor is electrically controlled to start and stop by an external controller; the output shaft of the stepping motor is fixedly connected to a rotating rod (22); the rotating rod (22) is rotatably connected to the crank connecting rod (21). The outer surface of the rotating rod (22) is rotatably connected to a rotating gear (23); the outer surface of the crank connecting rod (21) is symmetrically provided with limit grooves (24); a cross plate (25) is slidably connected inside each of the two limit grooves (24); a tooth groove (26) is provided in the middle of the cross plate (25); the tooth groove (26) and the rotating gear (23) are meshed with each other; the outer surface of the crank connecting rod (21) is rectangular and equidistantly arranged and fixedly connected to four receiving seats (27); the outer surface of each receiving seat (27) is fixedly connected to three receiving rods (28); the outer surface of the receiving rod (28) close to the cross plate (25) is sleeved with a needle bearing (29); the cross plate (25) and the rotating gear (23) are connected to each other. The walking beam (16) is rotatably connected with a connecting rod (210), the anti-collision component (3) comprises a connecting rope (31), the top end of the connecting rope (31) is fixedly connected to the top of the inner cavity of the slide groove, the bottom end of the connecting rope (31) is fixedly connected to a driving motor (32), the output shaft of the driving motor (32) is fixedly connected to a large wire drum (33), the bottom of the large wire drum (33) is fixedly connected to a small wire drum (34), the outer surface of the driving motor (32) is fixedly connected to a support seat (35), the bottom of the small wire drum (34) is rotatably connected to the inner wall of the support seat (35), the outer surface of the support seat (35) is rotatably connected to a first pulley (36), and the support seat (35) is away from the first pulley (3 One end of the large wire drum (33) is rotatably connected to a second pulley (37), a steel cable (38) is fixedly wound on the outer surface of the large wire drum (33), one end of the steel cable (38) away from the large wire drum (33) is fixedly wound on the outer surface of the small wire drum (34), the steel cable (38) is slidably connected to the outer surfaces of the first pulley (36) and the second pulley (37), the bottom of the steel cable (38) is slidably connected to a third pulley (39), the outer surface of the third pulley (39) is fixedly connected to a connecting shell (310), the bottom of the connecting shell (310) is symmetrically fixedly connected to a connecting rod (6), the bottom of the connecting rod (6) is fixedly connected to a rope hanger (4), and the inside of the rope hanger (4) is fixedly connected to an oil pumping slide rod (5),The centralizing assembly (7) comprises a centralizer (71), the centralizer (71) being fixedly connected to the top of the packing box (12), the oil pumping slide rod (5) being slidably connected to the interior of the centralizer (71), an airflow ring (72) being fixedly connected to the outer surface of the centralizer (71), the airflow ring (72) penetrating the interior of the centralizer (71) and respectively having a first through hole (73) and a second through hole (74), the second through hole (74) being located above the first through hole (73), and the centralizer (71) being fixedly connected to the outer surface of the centralizer (71). 1) is provided with a motion groove (75) in mirror symmetry on the inner wall, and a lower slide plate (76) and an upper slide plate (77) are slidably connected inside the two motion grooves (75), respectively, and the upper slide plate (77) is located above the lower slide plate (76), and a return spring (78) is fixedly connected between the lower slide plate (76), the upper slide plate (77) and the inner wall of the motion groove (75), and the outer surfaces of the upper slide plate (77) and the lower slide plate (76) are linearly and equidistantly arranged and fixedly connected to a plurality of friction spring blocks (79).

2. The integrated oil construction pumping unit capable of detecting the brake system according to claim 1 is characterized in that: The upper surface of the base (11) is fixedly connected to a reduction motor box (13), the upper surface of the base (11) is fixedly connected to a fixing seat (14), the upper surface of the base (11) is fixedly connected to a bracket (15), the top of the bracket (15) is rotatably connected to a walking beam (16), one end of the walking beam (16) away from the fixing seat (14) is fixedly connected to a donkey head (17), and a sliding groove is provided on the outer surface of the walking beam (16).

3. The integrated oil construction pumping unit capable of detecting the brake system according to claim 2 is characterized in that: A belt is provided between the crank connecting rod (21) and the output shaft of the reduction motor box (13).

4. The integrated oil construction pumping unit capable of detecting the brake system according to claim 1 is characterized in that: The ratio of the diameters of the inner surfaces of the large wire drum (33) and the small wire drum (34) is ten to seven. One end of the steel cable (38) is fixed to the outer surface of the large wire drum (33), and the remaining portion is wound around the outer surface of the large wire drum (33), and extends and slides to the outer surfaces of the first pulley (36), the third pulley (39), and the second pulley (37). One end of the steel cable (38) away from the large wire drum (33) is fixed to the outer surface of the small wire drum (34), and is reversely wound around the outer surface of the small wire drum (34). The drive motor (32) is electrically controlled to start and stop by an external controller. An external ultrasonic sensor is fixedly connected to the bottom of the rope suspension device (4), and the external ultrasonic sensor is electrically connected to the external controller.

5. The integrated oil construction pumping unit capable of detecting the brake system according to claim 1 is characterized in that: The friction spring block (79) on the outer surface of the lower slide plate (76) is L-shaped, and its bent portion is inclined toward the side close to the airflow ring (72). The friction spring block (79) on the outer surface of the upper slide plate (77) is arranged in the opposite direction to the friction spring block (79) on the outer surface of the lower slide plate (76). The material of the centralizer (71) is polyamide VI, and the material of the upper slide plate (77), the lower slide plate (76) and the friction spring block (79) are all thermoplastic polyurethane elastomer.

6. The integrated oil construction pumping unit capable of detecting the brake system according to claim 2 is characterized in that: The bottom of the packing box (12) is connected to an underground oil well, the reduction motor box (13) is electrically controlled to start and stop by an external controller, a hydraulic brake system is installed on the outer surface of the base (11), and the hydraulic brake system includes a brake, an oil cylinder, a brake valve, an oil tank and a pressure gauge, the hydraulic brake system is electrically controlled to start and stop by an external controller, and the pressure gauge is electrically connected to the external controller.

7. The integrated oil construction pumping unit capable of detecting the brake system according to claim 1 is characterized in that: A rod-type oil pumping assembly is fixedly connected below the oil pumping slide rod (5), and the rod-type oil pumping assembly includes a pump barrel assembly, a plunger assembly and a valve assembly. The pump barrel assembly is fixedly connected inside the underground oil well to form an oil pumping channel. The plunger assembly is fixedly connected to the bottom of the oil pumping slide rod (5) and can slide up and down inside the pump barrel assembly to change the volume inside the pump barrel to achieve the purpose of oil pumping. The valve assembly is arranged at the upper and lower parts of the pump barrel assembly to control the process of oil inlet and outlet.

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