Straightening equipment for detecting straightness of end part of sucker rod

Abstract

The utility model discloses sucker rod end straightness detecting and straightening equipment, and relates to the technical field of sucker rod detection. According to the technical scheme, the sucker rod feeding device comprises an equipment main frame body, a containing frame is arranged on one side of the equipment main frame body, a feeding mechanism and a feeding guide rail are arranged between the equipment main frame body and the containing frame, and the feeding mechanism can convey sucker rods on the containing frame to the equipment main frame body through the feeding guide rail; a material rotating mechanism capable of enabling the sucker rod to rotate around the axis of the sucker rod is arranged on the equipment main frame body; two photographing detection systems are mounted on the equipment main frame body, and straightening mechanisms are arranged on the sides, close to each other, of the two photographing detection systems; a discharging mechanism is arranged on the side, away from the containing frame, of the material transferring mechanism on the equipment main frame body and can detach a sucker rod on the equipment main frame body. According to the equipment, the straightness detection and straightening work of the end part of the sucker rod can be automatically completed, so that the detection and straightening efficiency and quality are effectively improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of sucker rod detection, and in particular to a sucker rod end straightness detection and straightening device. Background Art

[0002] The sucker rod is a slender rod in a well pumping station. It connects to the polished rod at the top and the oil pump at the bottom, transmitting power. It is typically made of tempered low-carbon alloy steel. It is connected one by one with internally threaded hoops within the oil pipe and extends to the piston in the underground oil reservoir, pumping oil through reciprocating motion. Because the ends of the sucker rod need to connect to both the polished rod and the oil pump, ensuring a smooth connection requires precise straightness. Existing straightness testing of the rod ends often relies on manual measurement. Workers first position the rod in a designated position and use a dial indicator to test each end. If any rod is found to be unsatisfactory, the rod is transferred to a straightening platform or hydraulic press for manual straightening. Manual testing is not only slow and physically demanding, but also lacks accuracy. Utility Model Content

[0003] The present application provides a sucker rod end straightness detection and straightening device, which can automatically detect the straightness of the sucker rod end and automatically straighten the sucker rod with abnormal ends, thereby improving detection efficiency and accuracy and reducing workers' physical exertion.

[0004] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0005] A sucker rod end straightness detection and straightening device comprises a main frame of the device, a placement rack for temporarily placing the sucker rod to be detected is provided on one side of the main frame of the device, a loading mechanism and a loading guide rail are provided between the main frame of the device and the placement rack, and the loading mechanism can transport the sucker rod on the placement rack to the main frame of the device via the loading guide rail;

[0006] The main frame of the equipment is provided with a material transfer mechanism, which can make the sucker rod placed on the main frame of the equipment rotate around its own axis;

[0007] A photographic detection system is installed on both ends of the main frame of the equipment along its length, and the axis of the lens end of the photographic detection system is collinear with the axis of the middle part of the sucker rod to be detected on the main frame of the equipment;

[0008] A straightening mechanism is provided on the mutually adjacent sides of the two photographic detection systems, and the straightening mechanism can correct the end of the sucker rod when the photographic detection system finds abnormality;

[0009] A material unloading mechanism is provided on the side of the material transfer mechanism on the main frame of the equipment away from the placement rack, and the material unloading mechanism can unload the sucker rod on the main frame of the equipment.

[0010] Furthermore, an inclined top plate is installed above the placement rack, and the inclination direction of the top plate of the placement rack is toward the main frame of the equipment. Two symmetrical guide side plates are provided on the top plate of the placement rack along its length direction, and the distance between the two guide side plates is equal to the length of a normal sucker rod;

[0011] The loading guide rail fixedly mounted on the main frame of the equipment is also tilted between the loading mechanism and the transfer mechanism, with the upper end of the loading guide rail close to the loading mechanism and the lower end of the loading guide rail close to the transfer mechanism.

[0012] Furthermore, the feeding mechanism includes two conveying wheels arranged along the length direction of the main frame of the equipment and higher than the upper end of the feeding guide rail, and the conveying wheels are evenly provided with a plurality of arc-shaped grooves in the circumference thereof, the contours of the arc-shaped grooves match the outer contours of the sucker rod, and the gap between the conveying wheels and the lowest end of the top plate of the placement frame is smaller than the diameter of the sucker rod;

[0013] The centers of the two conveying wheels are fixedly connected together via a drive shaft, the drive shaft is mounted on the main frame of the device via a plurality of first brackets, and the drive shaft is rotatably connected to the plurality of first brackets;

[0014] One end of the drive shaft is fixedly connected to a first pulley, the lower side of the first pulley is connected to the second pulley through a transmission belt, the center position of the second pulley is fixedly connected to the output end of the first drive motor, and the housing of the first drive motor is fixedly mounted on the main frame of the equipment.

[0015] Furthermore, the material transfer mechanism includes a plurality of support units arranged along the length direction of the main frame of the equipment, each group of the support units is composed of two freely rotatable supporting wheels, and the axes of the wheels on the supporting wheels are parallel to the axis of the drive shaft, and the upper ends of the wheels on the supporting wheels are lower than the lower ends of the loading guide rails;

[0016] In a group of the support units in the middle position of the main frame of the equipment, one end of one of the roller shafts is fixedly connected to the third pulley, and the lower side of the third pulley is connected to the fourth pulley through a transmission belt, and the fourth pulley is connected to the output end of the second drive motor, and the housing of the second drive motor is fixedly mounted on the main frame of the equipment.

[0017] Furthermore, the straightening mechanism includes a straightening hydraulic cylinder, the bottom of the straightening hydraulic cylinder is fixedly mounted on the main frame of the equipment, and a lifting plate is fixedly mounted on the output end of the straightening hydraulic cylinder.

[0018] Furthermore, a clamping mechanism is respectively provided on the mutually adjacent sides of the two straightening mechanisms, and the clamping mechanism can fix the rod body of the sucker rod when the straightening mechanism corrects the abnormal end of the sucker rod.

[0019] Furthermore, the clamping mechanism includes a lower clamping plate fixedly mounted on the main frame of the equipment, an upper clamping plate is provided above the lower clamping plate, the upper part of the upper clamping plate is fixedly connected to the output end of the tightening hydraulic cylinder, and the cylinder body of the tightening hydraulic cylinder is fixedly mounted on the main frame of the equipment; the mutually close sides of the upper clamping plate and the lower clamping plate are both arc-shaped structures, and the height of the lower clamping plate is sufficient to ensure that when the sucker rod is placed on the supporting wheel, the arc-shaped part of the top of the lower clamping plate just contacts the sucker rod.

[0020] Furthermore, the structure of the unloading mechanism is the same as that of the loading mechanism, and the elevation of the axis of the driving shaft in the unloading mechanism is lower than the elevation of the axis of the wheel on the supporting wheel in the transfer mechanism.

[0021] Furthermore, the unloading mechanism on the main frame of the equipment is provided with a unloading track on the side away from the transfer mechanism, and the unloading track includes an inner connecting plate and an outer extension plate whose upper ends are coplanar, and the inner connecting plate and the outer extension plate are both in an inclined state after being fixedly installed on the main frame of the equipment, and there is a gap between the upper end of the inner connecting plate and the conveying wheel in the unloading mechanism, and the distance of the gap is smaller than the diameter of the sucker rod; the lower end of the inner connecting plate is in contact with the upper end of the outer extension plate, and the lower end of the outer extension plate extends downward on the outside of the main frame of the equipment.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] When the feeding mechanism of the present application is in operation, it transports the sucker rods temporarily stored on the placement rack to the transfer mechanism on the main frame of the equipment through the feeding guide rail. After the transfer mechanism is started, it can drive the sucker rod to rotate around its own axis. During the rotation of the sucker rod, the two photo detection systems on the main frame of the equipment will automatically take multiple photos. Since the center point of the lens of the photo detection system is facing the center of the sucker rod shaft, when there is an abnormality in the straightness of the end of the sucker rod, the center of the photo taken by the photo detection system cannot coincide with the end of the sucker rod. The photo detection system automatically analyzes and calculates the deviation amplitude for such abnormalities, thereby controlling the straightening mechanism to correct the abnormal end of the sucker rod. After correction, the photo detection system is used to re-inspect. After confirming that the sucker rod is normal, the unloading mechanism will remove the sucker rod. Compared with the existing technology, not only the detection efficiency is improved and the labor intensity of workers is reduced, but also the detection accuracy is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of this application;

[0026] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 3 It is a structural diagram of the main frame of the equipment of this application;

[0028] Figure 4 This is a schematic diagram of the overall structure when viewed from the side of the placement rack of the present application;

[0029] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0030] Figure 6 This is a diagram of the positional relationship between the sucker rod when it is placed on the supporting wheel and the conveying wheel in the unloading mechanism;

[0031] Figure 7 This is a schematic diagram of the state when the conveying wheel in the unloading mechanism of the present application removes the qualified sucker rod from the main frame of the equipment;

[0032] Figure 8 This is a schematic diagram of the state of the feeding mechanism of the present application when adding new sucker rods to the main frame of the equipment.

[0033] Figure numerals: 1. Equipment main frame; 2. Placement rack; 3. Loading mechanism; 31. Conveyor wheel; 32. Arc groove; 33. Drive shaft; 34. First bracket; 35. First pulley; 36. Second pulley; 37. First drive motor; 4. Loading guide rail; 5. Transfer mechanism; 51. Support roller; 52. Third pulley; 53. Fourth pulley; 54. Second drive motor; 6. Photo detection system; 7. Straightening mechanism; 71. Straightening hydraulic cylinder; 72. Lifting plate; 8. Unloading mechanism; 9. Guide side plate; 10. Clamping mechanism; 101. Lower clamping plate; 102. Upper clamping plate; 103. Fastening hydraulic cylinder; 11. Unloading track; 111. Inner connecting plate; 112. Outer extension plate; 12. Sucker rod. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0035] like Figure 1-Figure 3 As shown, a sucker rod end straightness detection and straightening device disclosed in this application includes a main frame 1 of the device, a placement rack 2 for temporarily placing the sucker rod 12 to be tested is provided on one side of the main frame 1 of the device, a loading mechanism 3 and a loading guide rail 4 are provided between the main frame 1 of the device and the placement rack 2, and the loading mechanism 3 can transport the sucker rod 12 on the placement rack 2 to the main frame 1 of the device via the loading guide rail 4;

[0036] The main frame 1 of the equipment is provided with a material transfer mechanism 5, which can rotate the sucker rod 12 placed on the main frame 1 of the equipment around its own axis; a photo detection system 6 is installed at both ends of the main frame 1 along its length, and the axis of the lens end of the photo detection system 6 is collinear with the axis of the middle part of the sucker rod 12 to be detected on the main frame 1 of the equipment;

[0037] A straightening mechanism 7 is provided on the side close to each other of the two photographic detection systems 6. The straightening mechanism 7 can correct the end of the sucker rod 12 when the photographic detection system 6 finds that there is an abnormality; the transfer mechanism 5 on the main frame 1 of the equipment is provided with a unloading mechanism 8 on the side away from the placement rack 2. The unloading mechanism 8 can remove the sucker rod 12 on the main frame 1 of the equipment.

[0038] In the above embodiments, the main frame 1 of the device of the present application is as follows Figure 3As shown, it can provide an installation base for multiple mechanisms at the same time, and its shape can be adaptively adjusted according to its own needs during actual production. A placement rack 2 is set on one side of the main frame 1 of the equipment, on which the sucker rod 12 to be tested can be temporarily stored. After starting, the loading mechanism 3 can transport the sucker rod 12 on the placement rack 2 to the main frame 1 of the equipment through the loading guide rail 4. After the sucker rod 12 reaches the main frame 1 of the equipment, it will contact the transfer mechanism 5. When the transfer mechanism 5 is started, the sucker rod 12 will be driven to rotate around its own axis. The problem of abnormal straightness of the sucker rod 12 mainly occurs at its end. The rod body part usually has good straightness. The axis around which the sucker rod 12 revolves is the axis of its rod body part. If the end of the sucker rod 12 is qualified during the rotation process, the end of the sucker rod 12 can be detected from the photo obtained from the lens end of the photo detection system 6. The photo detection system 6 can only see the sucker rod 1 during the rotation process. 2 is located in the center of the display interface. If there is an abnormality in the end of the sucker rod 12, when the photographic detection system 6 is photographing the rotation process of the sucker rod 12, in addition to the end of the sucker rod 12, part of the rod body of the sucker rod 12 will be seen, and the trajectory of the center point of the end of the sucker rod 12 with abnormal straightness is circular during the rotation process. The photographic detection system 6 can automatically perform pixel analysis, obtain the end straightness value, detect the end runout error, and transmit the calculated relevant correction data to the straightening mechanism 7. The straightening mechanism 7 straightens the abnormal end of the sucker rod 12, and after straightening, the photographic detection system 6 is used for re-inspection. If the re-inspection fails, it is corrected again until it passes. The qualified sucker rod 12 is removed by the unloading mechanism 8, and then the loading mechanism 3 continues to load new material onto the main frame 1 of the equipment, and the above operation is repeated. Compared with the existing technology, most of the inspection process of the end of the sucker rod 12 is completed by the machine, which not only saves time and effort and is highly efficient, but also effectively improves the accuracy of inspection and correction. In addition, when facing large quantities of sucker rods 12, the stability of the final product quality can be guaranteed, and it will not be affected by fatigue or distraction during manual inspection and straightening.

[0039] The photographic inspection system 6 used in this application for inspecting the end of the sucker rod 12 is a computer vision measurement technology commonly used for inspecting the straightness of shafts and rods. This technology uses the image captured by the camera lens of the object as a detection carrier. It can achieve measurement using edge detection in machine vision, or combine edge detection with camera calibration to achieve high-precision measurement. The system's built-in algorithm automatically performs pixel analysis to obtain the straightness value of the end of the sucker rod 12 and automatically detects the runout error of the end of the sucker rod 12 when the end of the sucker rod 12 is abnormal. As a prior art, the specific structure and principle of the photographic inspection system 6 in this application will not be detailed here.

[0040] Further, if Figure 1 and Figure 4As shown, an inclined top plate is installed above the placement rack 2, and the inclination direction of the top plate of the placement rack 2 is toward the main frame 1 of the equipment. Two symmetrical guide side plates 9 are provided on the top plate of the placement rack 2 along its length direction. The distance between the two guide side plates 9 is equal to the length of the normal sucker rod 12.

[0041] The loading guide rail 4 fixedly mounted on the main frame 1 of the equipment is also inclined between the loading mechanism 3 and the transfer mechanism 5 , with the upper end of the loading guide rail 4 close to the loading mechanism 3 and the lower end of the loading guide rail 4 close to the transfer mechanism 5 .

[0042] In the above embodiment, the top plate above the placement rack 2 is arranged at an angle, and the inclination direction is toward the main frame 1 of the equipment, so that the sucker rod 12 placed on the top plate of the placement rack 2 along its length direction can automatically roll toward the loading mechanism 3 under the action of gravity. The two guide side plates 9 arranged on the top plate of the placement rack 2 have a distance equal to the length of the qualified sucker rod 12. When the sucker rod 12 rolls along the top plate of the placement rack 2, the two guide side plates 9 can play a guiding role, so that it remains parallel to the length direction of the main frame 1 of the equipment and falls onto the loading mechanism 3. The loading guide rail 4 is tilted and arranged between the loading mechanism 3 and the transfer mechanism 5 on the main frame 1 of the equipment, and its tilt direction is the same as the tilt direction of the top plate of the placement rack 2. When the loading mechanism 3 takes a sucker rod 12 from the lower end of the top plate of the placement rack 2 and transfers it to the loading guide rail 4, the sucker rod 12 can also roll downward along the loading guide rail 4 under the action of gravity. The lower end of the loading guide rail 4 is close to the transfer mechanism 5, so when the sucker rod 12 rolls down from the lower end of the loading guide rail 4, it will be guided to fall toward the transfer mechanism 5, thereby completing the work of loading the equipment main frame 1. In actual production, the loading guide rail 4 can be composed of a plurality of mutually parallel tilted guide rails, the lower ends of which are fixedly mounted on the main frame 1 of the equipment through steel pipes. Compared with using a large piece of complete plate to make the loading guide rail 4, this is not only convenient to assemble, but also saves materials and reduces production costs.

[0043] Furthermore, if Figure 1 and Figure 2 As shown, the feeding mechanism 3 includes two conveying wheels 31 arranged along the length direction of the main frame 1 of the equipment and higher than the upper end of the feeding guide rail 4. The conveying wheels 31 are evenly provided with a plurality of arc-shaped grooves 32 along the circumference. The contour of the arc-shaped grooves 32 matches the outer contour of the sucker rod 12. The gap between the conveying wheels 31 and the lowest end of the top plate of the placement frame 2 is smaller than the diameter of the sucker rod 12.

[0044] The centers of the two conveying wheels 31 are fixedly connected together through a drive shaft 33. The drive shaft 33 is mounted on the main frame 1 of the device through multiple first brackets 34. The drive shaft 33 and the multiple first brackets 34 are all rotatably connected.

[0045] One end of the drive shaft 33 is fixedly connected to a first pulley 35, and the lower side of the first pulley 35 is connected to the second pulley 36 through a transmission belt. The center position of the second pulley 36 is fixedly connected to the output end of the first drive motor 37, and the housing of the first drive motor 37 is fixedly mounted on the main frame 1 of the equipment.

[0046] In the above embodiment, the two conveying wheels 31 in the feeding mechanism 3 of the present application are connected together through a drive shaft 33, and one end of the drive shaft 33 is connected to the second pulley 36 on the output shaft of the first drive motor 37 through a first pulley 35 and a transmission belt. Therefore, when it is necessary to feed materials to the main frame 1 of the equipment, the first drive motor 37 is started, and the first drive motor 37 can drive the two conveying wheels 31 to rotate synchronously. When one of the arc-shaped grooves 32 on the conveying wheel 31 is close to the lower end of the top plate of the placement rack 2, a sucker rod 12 at the lower end of the top plate of the placement rack 2 will automatically slide into the groove of the conveying wheel 31. There are two conveying wheels 31 in the feeding mechanism 3, which are respectively located at the two ends of the sucker rod 12, so that the sucker rod 12 can be stably received. Figure 1 and Figure 8 As shown, as the conveying wheel 31 continues to rotate, when the arc-shaped groove 32 where the sucker rod 12 is placed tilts to a certain angle toward the upper end of the loading guide rail 4, the sucker rod 12 will automatically fall onto the loading guide rail 4 under the action of gravity. During the rotation of the conveying wheel 31, the above-mentioned operation will be realized when the sucker rod 12 passes through the arc-shaped groove 32 at the lower end of the top plate of the storage rack 2, thereby achieving the effect of automatic loading onto the main frame 1 of the equipment. If one of the sucker rods 12 is being inspected or straightened on the main frame 1 of the equipment, the conveying wheel 31 is in a stationary state. At this time, the conveying wheel 31 will form an obstruction to the sucker rod 12 on the storage rack 2 to prevent the sucker rod 12 on the storage rack 2 from sliding downward.

[0047] Further, if Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, the material transfer mechanism 5 includes multiple groups of support units arranged along the length direction of the main frame 1 of the equipment. Each group of support units is composed of two freely rotatable supporting wheels 51. The axes of the wheels on the supporting wheels 51 are parallel to the axis of the drive shaft 33. The upper ends of the wheels on the supporting wheels 51 are lower than the lower ends of the loading guide rails 4.

[0048] In a group of support units in the middle position of the main frame 1 of the equipment, one end of the rotating shaft of one of the support pulleys 51 is fixedly connected to the third pulley 52, and the lower side of the third pulley 52 is connected to the fourth pulley 53 through a transmission belt. The fourth pulley 53 is connected to the output end of the second drive motor 54, and the housing of the second drive motor 54 is fixedly installed on the main frame 1 of the equipment.

[0049] In the above embodiment, each group of support units in the material transfer mechanism 5 of the present application is composed of two supporting wheels 51, and the supporting wheels 51 include wheels and wheel seats. The wheels are rotatably mounted on the wheel seats through a rotating shaft, and the wheel seats are fixedly mounted on the main frame 1 of the equipment. There is a gap between the two supporting wheels 51 of each group of support units, and the length of the gap is smaller than the diameter of the sucker rod 12. In this way, when the sucker rod 12 falls on the support unit, it can form good contact with the wheels of the two supporting wheels 51 at the same time. Since the wheels of the supporting wheels 51 can rotate freely, and a group of supporting wheels located in the middle position The rotating shaft of one of the supporting rollers 51 in the support unit is connected to the fourth pulley 53 on the output end of the second drive motor 54 through the third pulley 52 and the transmission belt. Therefore, when the second drive motor 54 is started, it can drive one of the supporting rollers 51 in the middle group of support units to rotate. Under the action of friction, the wheel of the supporting roller 51 will drive the sucker rod 12 to rotate around its own axis on multiple groups of support units. This not only facilitates the detection of the straightness of its end, but also facilitates the subsequent straightening to turn the position to be straightened to the straightening mechanism 7.

[0050] Furthermore, if Figure 1 As shown, the straightening mechanism 7 includes a straightening hydraulic cylinder 71 , the bottom of the straightening hydraulic cylinder 71 is fixedly mounted on the main frame 1 of the equipment, and a lifting plate 72 is fixedly mounted on the output end of the straightening hydraulic cylinder 71 .

[0051] In the above embodiment, after the sucker rod 12 is placed on the material transfer mechanism 5, the output ends of the two straightening hydraulic cylinders 71 are respectively located below the two ends of the sucker rod 12. Since the output ends of the straightening hydraulic cylinders 71 can move in the vertical direction with the lifting plates 72, when any end of the sucker rod 12 detected by the photographic detection system 6 is abnormal, the straightening hydraulic cylinder 71 can start straightening according to the straightness deviation analyzed by the photographic detection system 6, thereby restoring the sucker rod 12 to a qualified state. This process can be automatically completed according to the information transmitted by the photographic detection system 6. Compared with straightening by manual pressure, the straightening efficiency can be effectively improved.

[0052] Furthermore, if Figure 1 and Figure 4 As shown, a clamping mechanism 10 is respectively provided on the mutually adjacent sides of the two straightening mechanisms 7 , and the clamping mechanism 10 can fix the rod body of the sucker rod 12 when the straightening mechanism 7 corrects the abnormal end of the sucker rod 12 .

[0053] In the above embodiment, the two straightening mechanisms 7 of the present application are located below the ends of the sucker rod 12 when the sucker rod 12 is placed on the material transfer mechanism 5. A clamping mechanism 10 is provided on each side of the two straightening mechanisms 7 that are close to each other, and the two clamping mechanisms 10 are located in the area between the two ends of the sucker rod 12 where straightness anomalies are likely to occur. When the straightening hydraulic cylinder 71 in the straightening mechanism 7 is in operation, the two clamping mechanisms 10 secure the adjusted sucker rod 12 to prevent the sucker rod 12 from shaking or shifting during the straightening process, which could affect the straightening effect.

[0054] Further, if Figure 1 As shown, the clamping mechanism 10 includes a lower clamping plate 101 fixedly mounted on the main frame 1 of the equipment, and an upper clamping plate 102 is provided above the lower clamping plate 101. The upper part of the upper clamping plate 102 is fixedly connected to the output end of the tightening hydraulic cylinder 103, and the cylinder body of the tightening hydraulic cylinder 103 is fixedly mounted on the main frame 1 of the equipment; the sides of the upper clamping plate 102 and the lower clamping plate 101 close to each other are both arc-shaped structures, and the height of the lower clamping plate 101 is sufficient to ensure that when the sucker rod 12 is placed on the supporting wheel 51, the arc-shaped part of the top of the lower clamping plate 101 is just in contact with the sucker rod 12.

[0055] In the above embodiment, after the sucker rod 12 is placed on the multiple rollers 51 of the material transfer mechanism 5, the sucker rod 12 will also contact the two lower clamping plates 101 at the same time. When an abnormality in the straightness of one end of the sucker rod 12 is detected, the position of the sucker rod 12 can be adjusted by the material transfer mechanism 5 so that the deflection direction of its end is toward the straightening mechanism 7. Then, the tightening hydraulic cylinders 103 on the two upper clamping plates 102 are activated, driving the two upper clamping plates 102 to cooperate with the corresponding lower clamping plates 101 to complete the fixation of the sucker rod 12. Then, the straightening hydraulic cylinder 71 corresponding to the abnormal end of the sucker rod 12 is activated, and the lifting plate 72 on its output end is used to straighten the sucker rod 12. The sides of the upper clamping plates 102 and the lower clamping plates 101 that are close to each other are both arc-shaped structures, which increases their contact area when clamping the sucker rod 12, thereby ensuring the clamping effect.

[0056] Further, if Figure 1 、 Figure 6 、 Figure 7 and Figure 8 As shown, the structure of the unloading mechanism 8 is the same as that of the loading mechanism 3 , and the axis elevation of the driving shaft 33 in the unloading mechanism 8 is lower than the axis elevation of the wheel on the supporting wheel 51 in the transfer mechanism 5 .

[0057] In the above embodiment, the structure of the unloading mechanism 8 is the same as that of the loading mechanism 3. The main difference is that the installation positions of the unloading mechanism 8 and the loading mechanism 3 are different. Figure 6As shown, the elevation of the axis of the driving shaft 33 in the unloading mechanism 8 is lower than the elevation of the axis of the wheel on the supporting roller 51, and the position of the conveying wheel 31 in the unloading mechanism 8 satisfies that when the sucker rod 12 is detected, one of the arc grooves 32 on the conveying wheel 31 is located obliquely below the side of the sucker rod away from the loading mechanism 3, and there is a gap between the arc groove 32 and the sucker rod, and the gap is 3~5mm. This not only ensures that the sucker rod 12 will not be affected by the conveying wheel 31 in the unloading mechanism 8 when it rotates, but also when the sucker rod 12 needs to be removed later, the first driving motor 37 in the unloading mechanism 8 drives the two conveying wheels 31 in the unloading mechanism 8 to rotate and quickly contact the sucker rod 12, and fork the sucker rod 12. As the conveying wheel 31 rotates, the arc groove 32 on which the sucker rod 12 is placed tilts toward the outside of the main frame 1 of the equipment, and the sucker rod 12 can be poured toward the transfer equipment prepared in advance. In this way, the sucker rod 12 after inspection or straightening can be automatically unloaded, thereby improving convenience during use.

[0058] Further, if Figure 1 As shown, a discharge track 11 is provided on the side of the unloading mechanism 8 on the main frame 1 of the equipment away from the transfer mechanism 5. The unloading track 11 includes an inner connecting plate 111 and an outer extension plate 112 whose upper ends are coplanar. After the inner connecting plate 111 and the outer extension plate 112 are fixedly installed on the main frame 1 of the equipment, they are both in an inclined state. There is a gap between the upper end of the inner connecting plate 111 and the conveying wheel 31 in the unloading mechanism 8, and the distance of the gap is smaller than the diameter of the sucker rod 12; the lower end of the inner connecting plate 111 is in contact with the upper end of the outer extension plate 112, and the lower end of the outer extension plate 112 extends downward on the outside of the main frame 1 of the equipment.

[0059] In the above embodiment, the inner connecting plate 111 is arranged in the gap between the unloading mechanism 8 and the main frame 1 of the equipment away from the loading mechanism 3. In this way, when the arc-shaped groove 32 on which the sucker rod 12 is placed on the conveying wheel 31 in the unloading mechanism 8 is tilted at the upper end of the inner connecting plate 111, the sucker rod 12 will automatically fall on the inner connecting plate 111, and the sucker rod 12 can be further guided to the outer extension plate 112 on the outside of the main frame 1 of the equipment through the inner connecting plate 111. The outer extension plate 112 coplanar with the upper end surface of the inner connecting plate 111 can further increase the moving path of the sucker rod 12, thereby allowing the sucker rod 12 to fall to an area farther outside the main frame 1 of the equipment.

[0060] The implementation principle of this embodiment is: when it is necessary to start detecting the end of the sucker rod 12, the first drive motor 37 in the loading mechanism 3 will drive the corresponding two conveying wheels 31 to rotate, and use the arc-shaped groove 32 on the conveying wheel 31 to place one of the sucker rods 12 at the lower end of the top plate of the placement frame 2 on the loading guide rail 4. Under the action of gravity, the sucker rod 12 will slide along the loading guide rail 4 to the transfer mechanism 5 of the main frame 1 of the equipment, and the rod body of the sucker rod 12 is in the middle of the two supporting wheels 51 in the multiple groups of support units in the transfer mechanism 5. Then the second drive motor 54 is started, causing the wheel of a supporting wheel 51 connected to it to rotate, thereby using friction to rotate the sucker rod 12 around its own axis. During this process, the photo detection system 6 at both ends of the sucker rod 12 will use machine vision to automatically detect the straightness of the end of the sucker rod 12. If the straightness is normal, the first drive motor 37 in the unloading mechanism 8 will drive the corresponding two conveying wheels 31 to rotate, and use the arc-shaped groove 32 located near the sucker rod 12 to drag the sucker rod 12. As the sucker rod 12 rotates, it will fall toward the inner connecting plate 111. The qualified sucker rod 12 will slide along the inner connecting plate 111 to the outer extension plate 112 under the action of gravity, and finally slide along the outer extension plate 112 to the special equipment placed in advance.

[0061] If the straightness detection of the pumping rod placed on the main frame 1 of the equipment finds an abnormality, the photo detection system 6 will automatically calculate the deviation and transmit the vertical deviation to the straightening hydraulic cylinder 71 in the straightening mechanism 7 through the control system. At the same time, the tightening hydraulic cylinders 103 in the two clamping mechanisms 10 will be started at the same time, so that the two upper clamps 102 move downward, and the sucker rod 12 with the abnormal end is fixed by cooperating with the lower clamp 101 at the corresponding position. The straightening hydraulic cylinder 71 at the abnormal end of the sucker rod 12 is started and the lifting plate 72 at its end is used to straighten the sucker rod 12. After straightening, the two clamping mechanisms 10 are released, and the material transfer mechanism 5 and the photo detection system 6 cooperate again to detect the straightened sucker rod 12. If the straightening is qualified, the unloading mechanism 8 is used to move the straightened sucker rod 12 out of the main frame 1 of the equipment. If it is unqualified, continue straightening until it is qualified.

[0062] When the photographic inspection system 6 determines that the end straightness of the sucker rod is acceptable, the unloading mechanism 8 removes the rod from the main frame 1, and the loading mechanism 3 places a new sucker rod 12 onto the main frame 1, repeating the above process. The present invention achieves superior efficiency and quality in inspecting the straightness of the end of the sucker rod 12, as well as in straightening it, to existing technologies. Furthermore, the majority of the work in the entire process is automatically performed by the equipment, significantly reducing worker labor intensity.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A straightening device for detecting the straightness of a sucker rod end, characterized by: The invention comprises a main frame (1) of the equipment, wherein a placement rack (2) for temporarily placing a sucker rod (12) to be tested is provided on one side of the main frame (1), and a loading mechanism (3) and a loading guide rail (4) are provided between the main frame (1) of the equipment and the placement rack (2), wherein the loading mechanism (3) can transport the sucker rod (12) on the placement rack (2) to the main frame (1) of the equipment via the loading guide rail (4); The main frame (1) of the equipment is provided with a material transfer mechanism (5), and the material transfer mechanism (5) can enable the sucker rod (12) placed on the main frame (1) of the equipment to rotate around its own axis; A photographic detection system (6) is installed at both ends of the main frame (1) of the equipment along its length direction, and the axis of the lens end of the photographic detection system (6) is collinear with the axis of the middle part of the sucker rod (12) to be detected on the main frame (1) of the equipment; A straightening mechanism (7) is provided on the mutually adjacent sides of the two photographic detection systems (6), and the straightening mechanism (7) can correct the end of the sucker rod (12) when the photographic detection system (6) finds an abnormality; The material transfer mechanism (5) on the main frame (1) of the equipment is provided with a material removal mechanism (8) on the side away from the placement rack (2), and the material removal mechanism (8) can remove the sucker rod (12) on the main frame (1) of the equipment.

2. The sucker rod end straightness detection and straightening device according to claim 1, characterized in that: An inclined top plate is installed above the placement rack (2), and the inclination direction of the top plate of the placement rack (2) is toward the main frame (1) of the equipment. Two symmetrical guide side plates (9) are provided on the top plate of the placement rack (2) along its length direction, and the distance between the two guide side plates (9) is equal to the length of a normal sucker rod (12); The loading guide rail (4) fixedly mounted on the main frame (1) of the equipment is also arranged at an angle between the loading mechanism (3) and the transfer mechanism (5), with the upper end of the loading guide rail (4) close to the loading mechanism (3) and the lower end of the loading guide rail (4) close to the transfer mechanism (5).

3. The sucker rod end straightness detection and straightening device according to claim 2, characterized in that: The feeding mechanism (3) includes two conveying wheels (31) arranged along the length direction of the main frame (1) of the equipment and higher than the upper end of the feeding guide rail (4), and the conveying wheels (31) are evenly provided with a plurality of arc-shaped grooves (32) in the circumference thereof, and the contour of the arc-shaped grooves (32) matches the outer contour of the sucker rod (12), and the gap between the conveying wheel (31) and the lowest end of the top plate of the placement frame (2) is smaller than the diameter of the sucker rod (12); The centers of the two conveying wheels (31) are fixedly connected together via a drive shaft (33), the drive shaft (33) is mounted on the main frame (1) of the device via a plurality of first brackets (34), and the drive shaft (33) and the plurality of first brackets (34) are all rotatably connected; One end of the driving shaft (33) is fixedly connected to a first pulley (35), a lower side of the first pulley (35) is connected to a second pulley (36) via a transmission belt, a center position of the second pulley (36) is fixedly connected to an output end of a first driving motor (37), and a housing of the first driving motor (37) is fixedly mounted on the main frame (1) of the device.

4. The sucker rod end straightness detection and straightening device according to claim 3, characterized in that: The material transfer mechanism (5) includes a plurality of support units arranged along the length direction of the main frame (1) of the equipment, each support unit being composed of two freely rotatable supporting wheels (51), and the axes of the wheels on the supporting wheels (51) are parallel to the axis of the drive shaft (33), and the upper ends of the wheels on the supporting wheels (51) are lower than the lower ends of the loading guide rails (4); In a group of the support units at the middle position on the main frame (1) of the equipment, one end of the rotating shaft of one of the supporting wheels (51) is fixedly connected to the third pulley (52), and the lower side of the third pulley (52) is connected to the fourth pulley (53) through a transmission belt, and the fourth pulley (53) is connected to the output end of the second drive motor (54), and the housing of the second drive motor (54) is fixedly mounted on the main frame (1) of the equipment.

5. The sucker rod end straightness detection and straightening device according to claim 4, characterized in that: The straightening mechanism (7) comprises a straightening hydraulic cylinder (71), the bottom of the straightening hydraulic cylinder (71) is fixedly mounted on the main frame (1) of the equipment, and a lifting plate (72) is fixedly mounted on the output end of the straightening hydraulic cylinder (71).

6. The sucker rod end straightness detection and straightening device according to claim 5, characterized in that: A clamping mechanism (10) is provided on each of the two straightening mechanisms (7) on the sides close to each other. The clamping mechanism (10) can fix the rod body of the sucker rod (12) when the straightening mechanism (7) corrects the abnormal end of the sucker rod (12).

7. The sucker rod end straightness detection and straightening device according to claim 6, characterized in that: The clamping mechanism (10) includes a lower clamping plate (101) fixedly mounted on the main frame (1) of the equipment, an upper clamping plate (102) is provided above the lower clamping plate (101), the upper portion of the upper clamping plate (102) is fixedly connected to the output end of the tightening hydraulic cylinder (103), and the cylinder body of the tightening hydraulic cylinder (103) is fixedly mounted on the main frame (1) of the equipment; the mutually adjacent sides of the upper clamping plate (102) and the lower clamping plate (101) are both arc-shaped structures, and the height of the lower clamping plate (101) is such that when the sucker rod (12) is placed on the supporting wheel (51), the arc-shaped portion of the top of the lower clamping plate (101) is in contact with the sucker rod (12).

8. The sucker rod end straightness detection and straightening device according to claim 4, characterized in that: The structure of the unloading mechanism (8) is the same as that of the loading mechanism (3), and the axis elevation of the driving shaft (33) in the unloading mechanism (8) is lower than the axis elevation of the wheel on the supporting wheel (51) in the transfer mechanism (5).

9. The sucker rod end straightness detection and straightening device according to any one of claims 3 to 8, characterized in that: A discharge track (11) is provided on the side of the unloading mechanism (8) on the main frame (1) of the equipment away from the transfer mechanism (5). The unloading track (11) includes an inner connecting plate (111) and an outer extending plate (112) whose upper ends are coplanar. The inner connecting plate (111) and the outer extending plate (112) are both in an inclined state after being fixedly mounted on the main frame (1) of the equipment. A gap is provided between the upper end of the inner connecting plate (111) and the conveying wheel (31) in the unloading mechanism (8), and the distance of the gap is smaller than the diameter of the sucker rod (12). The lower end of the inner connecting plate (111) contacts the upper end of the outer extending plate (112), and the lower end of the outer extending plate (112) extends downward outside the main frame (1) of the equipment.

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