Correcting device for preventing belt from jumping out of groove of pumping unit power mechanism

Abstract

The utility model discloses an anti-jumping correction device for a belt of a pumping unit power mechanism, which comprises a motor small belt pulley arranged at the output end of a motor and a reduction gearbox large belt pulley arranged at the input end of a reduction gearbox, and the motor small belt pulley is connected with the reduction gearbox large belt pulley through a pumping unit belt. A radial support plate extending in the radial direction of the large belt pulley of the reduction gearbox is fixed to the reduction gearbox, an L-shaped fixing plate is fixed to the side, facing the large belt pulley of the reduction gearbox, of the radial support plate, the transverse edge of the L-shaped fixing plate extends in the width direction of the large belt pulley of the reduction gearbox, and a U-shaped limiting block is fixed to the inner wall of the transverse edge of the L-shaped fixing plate. A certain rim in the belt wrap angle range of the large belt pulley of the reduction gearbox is embedded in the opening of the U-shaped limiting block, and a gap is reserved between the rim and the inner wall of the U-shaped limiting block. According to the device, belt jumping can be avoided when the pumping unit is started on site or remotely, four-point one-line calibration is facilitated, and safe automatic stop can be achieved under the condition that problems occur.

Description

Technical Field

[0001] The utility model relates to an oil pump, in particular to an anti-slot jump correction device for a belt of an oil pump power mechanism, belonging to the technical field of oil pump safety mechanisms. Background Art

[0002] The walking beam pumping unit is the core equipment at the oil well site. The whole unit is like a balance. The middle part of the walking beam is hinged to the top of the radial support plate through the middle bearing. During the operation of the walking beam, the middle bearing is used as the fulcrum and it reciprocates at a certain angle. The head end of the walking beam is connected to a donkey head, which bears the oil pumping load; the tail shaft bearing seat is fixed below the tail end of the walking beam, and a crossbeam is fixed below the tail shaft bearing seat. The axis of the crossbeam is perpendicular to the axis of the walking beam. Connecting rods are hinged at the front and rear ends of the crossbeam, and connecting rod lifting rings are provided at the lower ends of the two connecting rods. The two connecting rod lifting rings are connected to the crank mechanism through the crank pin and are provided with a balancing counterweight load. The motor and the pumping unit reducer are fixed together on the driving base. The small pulley at the output end of the motor is connected to the large pulley at the input end of the pumping unit reducer through the pumping unit belt, and the root of the crank is fixed to the output end of the pumping unit reducer.

[0003] During operation, the motor drives the pumping unit reduction box through the pumping unit belt, and the output end of the pumping unit reduction box drives the crank to rotate. The free end of the crank pulls the lower ends of the two connecting rods to make circular motions, and the upper ends of the two connecting rods drive the tail end of the walking beam to swing up and down through the crossbeam, and the donkey head at the head end of the walking beam also moves up and down. The donkey head drives the plunger of the deep well pump to move up and down through the rope braid, the bare rod, and the sucker rod, thereby continuously pumping the crude oil in the well out of the wellbore.

[0004] The pumping unit belt is a key component of the entire oil well production system. The installation standard requires that a line be drawn through the center of the large pulley of the reduction box and the small pulley of the motor, and intersecting with the edges of the large pulley of the reduction box and the small pulley of the motor to form four points. These four points must be in a straight line, commonly known as "four points in a line". Whether the belt meets the installation standard of the four-point line is one of the key points to ensure the production rate of the oil well and reduce production costs.

[0005] At present, when oil fields use beam pumping units for exploitation, the belts work in an all-weather environment for a long time. Due to aging and loosening caused by long-term operation, the belt of the large pulley of the input shaft of the reduction box is prone to jump during daily start-stop processes, especially when the belt is not in a "four-point straight line" state. Now that oil field information automation has been applied, remote start-stop pumping units cannot use the inertial force of the crank. In addition, the pumping wells with fast strokes have large belt jumps during remote pumping, making it easier to jump out of the pulley groove. If the operation continues, the belt is likely to be off the pulley or damaged, causing the motor to idle after the pumping unit stops pumping. It needs to be handled on site, increasing the workload of the operator. It is also difficult and dangerous to turn the wheel into the groove. If the belt needs to be replaced, it is time-consuming and laborious, affecting the production rate of the oil well.

[0006] The Chinese utility model patent with the announcement number CN219017082U discloses a pumping unit belt slip alarm device, which includes a large pulley speed signal acquisition device arranged at the rotating shaft position of the large pulley of the pumping unit, and also includes a field control cabinet; wherein the field control cabinet is electrically connected to the motor of the pumping unit, and the large pulley speed signal acquisition device has a wireless signal transmission mechanism, and the large pulley speed signal acquisition device is electrically connected to the field control cabinet through a wireless signal. The device uses the speed collector on the large pulley to preset the speed value, and alarms when it is lower than the set value, but it has limitations in use, and there is no emergency self-stop function after the belt is worn out.

[0007] The Chinese utility model patent with the announcement number CN213279389U discloses a pumping unit motor belt centering positioning device, wherein the motor fixing seat in the device is respectively provided with a T-shaped fixing plate, a slide bar, a front tray and a rear tray, the bottom end of the T-shaped fixing plate is provided with a T-shaped slide groove, the bottom end of the motor fixing seat is fixedly connected with a bottom plate, the bottom plate is provided with a T-shaped slide block matched with the T-shaped slide groove, the T-shaped slide groove and the T-shaped slide block are provided to facilitate the adjustment of the lateral position of the T-shaped fixing plate, the front tray and the rear tray are slidably connected with the slide bar, and the front and rear positions of the motor are adjusted by adjusting the coordinated rotation of the lead screw and the lead screw nut, and the positioning transmitter and the positioning receiver are respectively provided on the side of the small pulley and the large pulley, and the positioning transmitter and the positioning receiver can quickly detect whether the installation requirements of the four-point one-line connecting belt between the reducer and the motor of the pumping unit meet the standards, and facilitate the adjustment of the direction and distance. The device uses a laser transmitter and a receiver to measure the "four-point one-line", and the positioning device for fixing the motor can only be used for one machine, and cannot be applied to multiple wells, and the cost is high.

[0008] Currently, there is no means to prevent the belt from jumping. The "four-point one-line" of the belt must be able to be applied to multiple wells to save costs. When the pump cannot operate normally, it can stop automatically in time to reduce electricity waste and avoid the expansion of faults. Utility Model Content

[0009] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0010] In view of the above problems and / or problems existing in the prior art, the present utility model is proposed.

[0011] The purpose of the utility model is to overcome the problems existing in the prior art and provide a pumping unit power mechanism belt anti-jumping correction device, which can avoid the belt jumping when the pumping unit is started on-site or remotely, facilitate "four-point one-line" calibration, and can safely stop itself when a problem occurs.

[0012] In order to solve the above technical problems, the utility model provides an anti-jumping groove correction device for the belt of an oil pumping unit power mechanism, comprising a small motor pulley installed at the output end of the motor and a large pulley of the reduction gearbox installed at the input end of the reduction gearbox, the small motor pulley is connected to the large pulley of the reduction gearbox through an oil pumping unit belt, a radial support plate extending radially along the large pulley of the reduction gearbox is fixed on the reduction gearbox, an L-shaped fixing plate is fixed on the side of the radial support plate facing the large pulley of the reduction gearbox, the horizontal edge of the L-shaped fixing plate extends along the width direction of the large pulley of the reduction gearbox, and a U-shaped limit block is fixed on the inner wall of the horizontal edge of the L-shaped fixing plate, and a wheel rim somewhere within the belt wrap angle range of the large pulley of the reduction gearbox is embedded in the opening of the U-shaped limit block and a gap is left with the inner wall of the U-shaped limit block.

[0013] As an improvement of the utility model, a mark plate is magnetically attracted on the outer end face of the small pulley of the motor, an iron pile head is fixed on the outer edge of the horizontal side of the L-shaped fixing plate, and a laser emitter for emitting laser toward the mark plate is magnetically attracted on the iron pile head.

[0014] As a further improvement of the utility model, the scale plate is circular, and a target ring scale with the center point of the scale plate as the center is provided on one end surface.

[0015] As a further improvement of the utility model, the circumference of the scale plate is connected to the free end of the scale plate support rod as a whole, and the root of the scale plate support rod is connected to the scale plate magnetic seat.

[0016] As a further improvement of the utility model, two bracket plate fixing holes are symmetrically provided at the lower part of the radial bracket plate, and bracket screws pass through the bracket plate fixing holes respectively to fix the radial bracket plate on the reduction box bearing cover.

[0017] As a further improvement of the utility model, four fixing plate studs distributed in a rectangular shape are welded to the outer wall of the vertical side of the L-shaped fixing plate, and the radial support plate is provided with radial long grooves along its length direction. Each fixing plate stud passes through the radial long grooves on the radial support plate to fix the L-shaped fixing plate on the radial support plate.

[0018] As a further improvement of the present invention, four limit block studs distributed in a rectangular shape are welded to the top of the bottom wall of the U-shaped limit block, and a transverse long groove extending along the thickness direction of the large pulley of the reduction gear box is provided on the transverse side of the L-shaped fixing plate. Each limit block stud passes through the corresponding transverse long groove to fix the U-shaped limit block under the transverse side of the L-shaped fixing plate.

[0019] As a further improvement of the utility model, a pulley monitor for monitoring whether the large pulley of the reduction box stops rotating is installed at the lower part of the radial support plate.

[0020] As a further improvement of the utility model, a reflective sheet is pasted on one of the spokes of the large pulley of the reduction box to facilitate detection by the pulley monitor.

[0021] As a further improvement of the utility model, a spoke of the large pulley of the reduction box is coated with a reflective paint spot that is easy to detect by the pulley monitor.

[0022] As a further improvement of the present invention, when the large pulley of the reduction box stops rotating or is lower than a set speed, the pulley monitor sends a stop signal to the control system.

[0023] Compared with the prior art, the utility model has achieved the following beneficial effects: 1. After use, the pumping unit belt jumps out of the wheel groove less, and the oil well operation efficiency is improved;

[0024] 2. After commissioning, the four-point-one-line calibration of the pumping unit belt is standardized, and the accuracy of the four-point-one-line of the belt is improved;

[0025] 3. After the pumping unit is put into use, the motor can stop running in time when the pumping unit belt jumps out of the wheel groove, eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. The drawings are only provided for reference and explanation, not for limiting the present utility model. Among them:

[0027] Figure 1 This is a front view of the utility model of the pumping unit power mechanism belt anti-slot jump correction device in use;

[0028] Figure 2 for Figure 1 A top view of

[0029] Figure 3 for Figure 1 Right view of;

[0030] Figure 4 This is a front view of the laser emitting part of the utility model;

[0031] Figure 5 for Figure 4 Stereoscopic image of

[0032] Figure 6 It is a three-dimensional diagram of the radial support plate in the utility model;

[0033] Figure 7 It is a three-dimensional diagram of the L-shaped fixing plate in the utility model;

[0034] Figure 8 It is a three-dimensional diagram of the U-shaped limit block in the utility model;

[0035] Fig. 9 It is a three-dimensional diagram of the laser transmitter in the utility model;

[0036] Fig.10 It is a three-dimensional diagram of the winning bidder of the utility model;

[0037] In the figure: 1. radial bracket plate; 1a. bracket plate fixing hole; 1b. radial long groove; 2. bracket screw; 3. L-shaped fixing plate; 3a. fixing plate stud; 3b. transverse long groove; 4. iron pile head; 5. U-shaped limit block; 5a. limit block stud; 6. laser transmitter; 7. mark plate; 7a. target ring scale; 7b. mark plate support rod; 7c. mark plate magnetic seat; 8. pulley monitor; 9. motor; 10. small motor pulley; 11. pumping unit belt; 12. reduction box; 13. large reduction box pulley. DETAILED DESCRIPTION

[0038] In the following description of the utility model, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not mean that the device must have a specific direction.

[0039] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific figures. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0041] like Figures 1 to 3As shown, the pumping unit power mechanism includes a motor 9 and a reduction box 12, a motor small pulley 10 is installed at the output shaft end of the motor 9, a reduction box large pulley 13 is installed at the input shaft end of the reduction box 12, and the motor small pulley 10 is connected to the reduction box large pulley 13 through the pumping unit belt 11. The motor 9 drives the reduction box large pulley 13 to rotate through the motor small pulley 10 and the pumping unit belt 11, and the reduction box large pulley 13 drives the input shaft of the reduction box 12 to rotate, and the output shaft of the reduction box 12 drives the crank to rotate, and the crank drives the walking beam to swing through the connecting rod.

[0042] When the pumping unit belt 11 is worn or broken, it needs to be replaced. When replacing, the motor 9 needs to be shifted. After the new belt is replaced, the "four points and one line" of the belt needs to be recalibrated. After each adjustment of the position of the motor 9, it is usually observed by pulling a wire to see whether it meets the "four points and one line". Because it is troublesome, in actual work, operators often only observe by visual inspection, which brings certain errors.

[0043] like Figures 1 to 10 As shown, the pumping unit power mechanism belt anti-jumping groove correction device of the utility model comprises a radial support plate 1, a support screw 2, an L-shaped fixing plate 3, an iron pile head 4, a U-shaped limit block 5, a laser emitter 6 and a marking plate 7. A radial support plate 1 extending radially along a large pulley 13 of the reduction box is fixed on the reduction box 12, an L-shaped fixing plate 3 is fixed on the side of the radial support plate 1 facing the large pulley 13 of the reduction box, the horizontal edge of the L-shaped fixing plate 3 extends along the width direction of the large pulley 13 of the reduction box, and a U-shaped limit block 5 is fixed on the inner wall of the horizontal edge of the L-shaped fixing plate 3, a wheel rim somewhere within the belt wrap angle range of the large pulley 13 of the reduction box is embedded in the opening of the U-shaped limit block 5, a gap is left between the outer edge of the pumping unit belt 11 and the inner side of the bottom wall of the U-shaped limit block 5, and a gap is also left between the two sides of the large pulley 13 of the reduction box and the inner walls of the two sides of the U-shaped limit block 5. During normal operation, the large pulley 13 of the reduction box and the pumping unit belt 11 do not contact the U-shaped stopper 5. Even if the pumping unit belt 11 fluctuates to a certain extent and contacts to a certain extent the inner side of the U-shaped stopper 5, it will still be restricted in the belt groove to avoid being out of the groove.

[0044] In order to adapt to the diameter of the large pulley 13 of the different reduction boxes and facilitate the displacement when replacing the belt, the radial bracket plate 1 is processed with a radial long groove 1b extending along its length. Four rectangularly distributed fixing plate studs are welded to the vertical side outer wall of the L-shaped fixing plate 3. Holes can be drilled on the vertical side of the L-shaped fixing plate 3 first, and the roots of the fixing plate studs are inserted into the holes and welded on the non-matching inner wall to ensure that the vertical side outer wall of the L-shaped fixing plate 3 is precisely fitted with the radial bracket plate 1.

[0045] Each fixing plate stud passes through the radial long slot 1 b on the radial bracket plate 1 and can be moved up and down to be adjusted to a suitable height, and then the nut is tightened to fix the L-shaped fixing plate 3 on the radial bracket plate 1.

[0046] A transverse long groove is processed on the transverse side of the L-shaped fixing plate 3, and the transverse long groove extends along the thickness direction of the large belt pulley 13 of the reduction box. Four rectangularly distributed stopper studs 5a are welded on the top of the bottom wall of the U-shaped stopper 5, and each stopper stud 5a passes through the corresponding transverse long groove to fix the U-shaped stopper 5 below the transverse side of the L-shaped fixing plate 3. The position of the U-shaped stopper 5 is adjusted transversely through the transverse long groove to adapt to the width position of the large belt pulley.

[0047] Two bracket plate fixing holes 1a are symmetrically arranged at the lower part of the radial bracket plate 1, and the distance between the two bracket plate fixing holes 1a is equal to the distance between two adjacent screws of the reduction gearbox bearing cover. After the whole device is assembled, the radial bracket plate 1 is fixed to the reduction gearbox bearing cover by using bracket screws 2 to pass through the bracket plate fixing holes 1a respectively, without the need to process additional threaded holes, which is very convenient and quick.

[0048] The front end of the L-shaped fixing plate 3 is welded with an iron pile head 4 for magnetically attracting the laser transmitter 6; the outer end surface of the motor small pulley 10 is magnetically attracted with a scale plate 7, which is circular and has multiple target ring scales 7a with the center point as the center. The circumference of the scale plate 7 is connected to the free end of the scale plate support rod 7b, and the root of the scale plate support rod 7b is connected to the scale plate magnetic seat 7c.

[0049] After the radial support plate 1, L-shaped fixing plate 3 and U-shaped limit block 5 are installed for the first time, the laser emitter 6 is magnetically attracted on the iron pile head 4, and the magnetic seat 7c of the mark plate is adsorbed on the outer end surface of the motor small belt pulley 10. The laser beam emitted by the laser emitter 6 is irradiated to the mark plate 7 magnetically attracted on the motor small belt pulley 10, ensuring that the light spot falls on the center of the mark plate 7. Then remove the laser emitter 6 and the mark plate 7, and the oil pump is put into normal operation.

[0050] When the oil pump has been working for a long time and the belt needs to be replaced, it is necessary to loosen the mounting bolts of the motor 9, and when the oil pump belt 11 is replaced and re-tensioned, it is only necessary to magnetically attract the laser transmitter 6 on the iron pile head 4 again, and magnetically attract the scale plate 7 to the outer end face of the small motor pulley 10. The light beam of the laser transmitter 6 falls on the scale plate 7, and the error value of the "four points and one line" can be judged very intuitively through the target ring scale 7a, which is convenient for the calibration of the "four points and one line" after replacing the belt, thereby extending the service life of the oil pump belt 11.

[0051] The radial support plate 1 is also equipped with a pulley monitor 8 for monitoring whether the large pulley 13 of the reduction box has stopped rotating. The pulley monitor 8 can be replaced by a tachometer. A reflective sheet is pasted on one of the spokes of the large pulley 13 of the reduction box for easy detection by the pulley monitor 8, or a reflective paint spot is coated on one of the spokes of the large pulley 13 of the reduction box for easy detection by the pulley monitor 8, so as to facilitate the tachometer to accurately measure the speed, or to facilitate the pulley monitor 8 to monitor whether the large pulley 13 of the reduction box has stopped rotating. When the pumping unit belt 11 jumps, derails or breaks, the large pulley 13 of the reduction box will stop rotating, the pulley monitor 8 will send a stop signal to the control system, and the motor 9 will stop running. Or when the tachometer measures that the speed of the large pulley 13 of the reduction box is lower than the set value, it means that the pumping unit belt 11 is slipping, and the control system also controls the motor 9 to power off and stop in time, so that the adjustment and disassembly of the entire device are relatively convenient.

[0052] The device was tried out in Zhen 11-5 Well, Zhen 35-26 Well and other wells. The belt did not jump out of the pulley groove, the motor's "four-point-one-line" calibration pass rate was 100%, and the on-site use effect was very good.

[0053] The above description is only the preferred feasible embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model, but does not limit the scope of patent protection of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. In addition to the above embodiments, the utility model can also have other implementation modes without departing from the spirit and scope of the utility model. The utility model will also have various changes and improvements. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents. The technical features not described in the utility model can be achieved by or using existing technologies, which will not be repeated here.

Claims

1. A pumping unit power mechanism belt anti-slot correction device, comprising a motor small pulley installed at the motor output end and a reduction box large pulley installed at the reduction box input end, wherein the motor small pulley is connected to the reduction box large pulley through the pumping unit belt, characterized in that: A radial support plate extending radially along the large pulley of the reduction box is fixed on the reduction box, and an L-shaped fixing plate is fixed on the side of the radial support plate facing the large pulley of the reduction box, the horizontal edge of the L-shaped fixing plate extends along the width direction of the large pulley of the reduction box, and a U-shaped limit block is fixed on the inner wall of the horizontal edge of the L-shaped fixing plate, and a wheel rim somewhere within the belt wrap angle range of the large pulley of the reduction box is embedded in the opening of the U-shaped limit block and a gap is left with the inner wall of the U-shaped limit block.

2. The pumping unit power mechanism belt anti-slot correction device according to claim 1, characterized in that: A mark plate is magnetically attracted on the outer end surface of the small belt pulley of the motor, an iron pile head is fixed on the outer edge of the horizontal side of the L-shaped fixing plate, and a laser emitter for emitting laser toward the mark plate is magnetically attracted on the iron pile head.

3. The pumping unit power mechanism belt anti-slot jump correction device according to claim 2, characterized in that: The scale plate is circular, and a target ring scale with the center point of the scale plate as the center is provided on one end surface.

4. The pumping unit power mechanism belt anti-slot jump correction device according to claim 3, characterized in that: The circumference of the mark plate is connected to the free end of the mark plate support rod as a whole, and the root of the mark plate support rod is connected to the mark plate magnetic suction seat.

5. The pumping unit power mechanism belt anti-slot jump correction device according to claim 1, characterized in that: Two bracket plate fixing holes are symmetrically arranged at the lower part of the radial bracket plate, and bracket screws pass through the bracket plate fixing holes respectively to fix the radial bracket plate on the reduction box bearing cover.

6. The pumping unit power mechanism belt anti-slot jump correction device according to claim 1, characterized in that: Four fixing plate studs distributed in a rectangular shape are welded to the outer wall of the vertical side of the L-shaped fixing plate, and the radial support plate is provided with radial long grooves along its length direction. Each fixing plate stud passes through the radial long grooves on the radial support plate to fix the L-shaped fixing plate on the radial support plate.

7. The pumping unit power mechanism belt anti-slot jump correction device according to claim 1, characterized in that: Four limit block studs distributed in a rectangular shape are welded to the top of the bottom wall of the U-shaped limit block, and a transverse long groove extending along the thickness direction of the large pulley of the reduction box is provided on the transverse side of the L-shaped fixing plate. Each limit block stud passes through the corresponding transverse long groove to fix the U-shaped limit block under the transverse side of the L-shaped fixing plate.

8. The pumping unit power mechanism belt anti-slot jump correction device according to claim 1, characterized in that: A pulley monitor for monitoring whether the large pulley of the reduction box stops rotating is installed at the lower part of the radial support plate.

9. The pumping unit power mechanism belt anti-slot jump correction device according to claim 8, characterized in that: A reflective sheet is pasted on one spoke of the large pulley of the reduction box to facilitate detection by the pulley monitor.

10. The pumping unit power mechanism belt anti-slot jump correction device according to claim 8, characterized in that: A spoke of the large pulley of the reduction box is coated with a reflective paint spot that is convenient for the pulley monitor to detect.

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