Sucker rod machining auxiliary device

Abstract

The invention relates to the technical field of laser cutting, in particular to a sucker rod machining auxiliary device which comprises a main machine, a feeding frame, a conveying frame and a discharging conveying line. A sucker rod is pushed to a lower roller through a feeding mechanism, then an adjusting mechanism is controlled to drive a middle roller to move downwards, and the sucker rod is clamped between the lower roller and the middle roller; the upper chain wheel driving mechanism and the lower chain wheel driving mechanism can be controlled to start, the sucker rod is conveyed into the lower rotary clamping mechanism to be subjected to laser cutting, in the downward moving process of the middle roller, the positioning rod can be driven to move upwards at the same time, at the moment, the feeding mechanism can be controlled again to operate, the sucker rod is pushed to the middle roller, and then the middle roller is controlled to move upwards to reset. The sucker rods are clamped between the middle roller and the upper roller, then after laser cutting of the lower sucker rod is completed, the lower chain wheel driving mechanism is controlled to be started, the sucker rods are conveyed to the upper rotary clamping mechanism to be subjected to laser cutting, and the steps are repeated, so that alternate cutting of the two sets of sucker rods is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting, and particularly relates to an auxiliary device for mechanical processing of sucker rods. BACKGROUND

[0002] A sucker rod is a core transmission component of a mechanical oil production system, and is used to connect a surface pumping unit and a downhole sucker rod pump, so as to transmit power to the bottom of a well through reciprocating motion and realize continuous lifting of crude oil. Since a single sucker rod has a limited length, a plurality of sucker rods are connected in series according to the depth of an oil well in actual application. In the manufacturing process of the sucker rod, laser length cutting is a key process for ensuring product quality. First, a hot-rolled long steel rod must be accurately cut according to standard specifications to meet the assembly requirements of different well depths on the length of a single rod. Secondly, the flatness of an end surface obtained by length cutting directly affects the accuracy of subsequent thread processing, and is related to the sealing performance and fatigue resistance when connected downhole. In addition, length consistency helps to uniformly distribute the stress of the rod body downhole, avoids local stress concentration caused by length deviation, and ensures the safe and stable operation of oil production.

[0003] However, the laser cutting of the sucker rod is generally carried out in a single-station production mode. During operation, a feeding machine automatically transports a single sucker rod to a laser cutting station, the sucker rod is fixed by a chuck clamp, and then cutting is completed by a laser head. After cutting, the clamp is loosened, the finished product and waste are discharged, the equipment is reset, and the feeding operation of the next sucker rod can be performed. This single-station serial processing mode causes the laser cutting main machine to have a significant idle period. During the feeding and discharging transmission, clamping and positioning, and discharging and resetting stages, the laser cutting head and the optical system are in a non-production state, the effective cutting time ratio is too low, and the long non-production waiting period seriously restricts the improvement of production capacity, causes the invalid dissipation of laser equipment energy, and increases the unit processing cost.

[0004] Therefore, an auxiliary device for mechanical processing of sucker rods is provided to solve the above problems. SUMMARY

[0005] The present application relates to the technical field of laser cutting, and particularly relates to an auxiliary device for mechanical processing of sucker rods.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a sucker rod machining auxiliary device, comprising a main unit, a loading rack, a conveyor rack, and a unloading conveyor line. The conveyor rack is fixedly connected to the side wall of the loading rack and to the rear of the main unit. The unloading conveyor line is located at the front of the main unit. The main unit is longitudinally equipped with an upper rotating clamping mechanism and a lower rotating clamping mechanism for rotating and clamping the sucker rod. The main unit is equipped with a longitudinally movable laser cutting mechanism. The conveyor rack is H-shaped, and several [unclear - possibly referring to components or mechanisms] are rotatably connected to the inner side of the conveyor rack. The conveyor frame has a lower roller and a feeding mechanism for transferring the sucker rod from the feeding frame to the lower roller. The conveyor frame is a hollow structure. Several pairs of vertical plates are longitudinally slidably connected to the inner side of the conveyor frame away from the feeding frame. A middle plate is fixedly connected between the top ends of the pairs of vertical plates. Several middle rollers are rotatably connected to the side wall of the middle plate. An upper roller is provided above each of the middle rollers. A U-shaped positioning rod is longitudinally slidably connected to the other side of the conveyor frame. The top end of the positioning rod is inclined. An adjustment mechanism is also provided for driving the vertical plates to move down while adjusting the height of the positioning rod.

[0007] In the above technical solution, the top of the feeding rack is inclined toward the conveyor frame, the upper roller is positioned directly above the lower roller, the middle roller is staggered with the upper and lower rollers, and the inclined surface at the top of the positioning rod is positioned toward the middle plate.

[0008] In the above technical solution, the side wall of the conveyor frame is further provided with an upper sprocket drive mechanism for simultaneously driving multiple lower rollers to rotate. The lower rollers are located next to the lower rotating clamping mechanism and are located below the center of the lower rotating clamping mechanism. The upper rollers are located next to the upper rotating clamping mechanism and are located above the center of the upper rotating clamping mechanism. The lower rollers, middle rollers and upper rollers are all V-shaped rubber rollers.

[0009] In the above technical solution, a lifting device is further provided on the front side of the main unit, and the unloading conveyor line is fixedly connected to the lifting end of the lifting device.

[0010] In the above technical solution, the feeding mechanism further includes a feeding motor, a plurality of rotating seats are fixedly connected to the bottom end of the conveyor frame, a transmission shaft is rotatably connected between the plurality of rotating seats, the feeding motor is fixedly connected to the rear side of the conveyor frame, the output end of the feeding motor is fixedly connected to the side wall of the transmission shaft, a plurality of guide rails are fixedly connected to the side wall of the conveyor frame, a feeding plate is longitudinally slidably connected to each of the plurality of guide rails, a plurality of toothed grooves are equidistantly opened on the side wall of the feeding plate, a plurality of gears are fixedly connected to the outer wall of the transmission shaft, the plurality of gears are arranged next to the toothed grooves and mesh with the toothed grooves, and a push block is fixedly connected to the top of the feeding plate, the push block is arranged at the front side of the feeding frame.

[0011] In the above technical solution, the adjusting mechanism further includes an electric telescopic cylinder, and several electric telescopic cylinders are provided. All of the electric telescopic cylinders are fixedly connected to the side wall of the conveyor frame. An upper guide roller is provided at the top of the inner side of the positioning rod. The upper guide roller is rotatably connected to the inner side of the conveyor frame. A pull rope is fixedly connected to the bottom of the inner side of the positioning rod. A middle guide roller and a lower guide roller are rotatably connected to both sides of the inner wall of the transverse end of the conveyor frame, respectively. A lower plate is fixedly connected between the bottom ends of each pair of vertical plates. A vertical groove is opened in the side wall of the conveyor frame. The lower plate is longitudinally slidably connected to the inner side of the vertical groove. The other end of the pull rope passes over the upper guide roller, then passes under the middle guide roller and over the lower guide roller, and is fixedly connected to the top of the lower plate. The output ends of the electric telescopic cylinders are all fixedly connected to the top of the lower plate.

[0012] In the above technical solution, the side wall of the positioning rod is further provided with a through groove, and the top of each through groove is provided with a fixing plate. The fixing plate is fixedly connected to the inside of the conveyor frame, and the bottom end of the fixing plate is fixedly connected to a return spring. The bottom end of the return spring is fixedly connected to the bottom of the through groove.

[0013] In the above technical solution, the middle plate sidewall is further provided with a lower sprocket drive mechanism for driving multiple middle rollers to rotate simultaneously, the conveyor frame sidewall is fixedly connected with three L-shaped brackets, the three L-shaped brackets are fixedly connected with an upper plate, and the upper rollers are all rotatably connected to the upper plate sidewall.

[0014] In the above technical solution, a bottom rod is fixedly connected to the side wall of the middle plate, and an upper rolling pressure sensor is fixedly connected to the bottom end of the bottom rod. A top rod is fixedly connected to the side wall of the upper plate, and a lower rolling pressure sensor is fixedly connected to the bottom end of the top rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the arrangement of upper, middle, and lower rollers, allows for easy operation. The feeding mechanism pushes the sucker rod onto the lower roller, and then the adjusting mechanism drives the middle roller downwards, clamping the sucker rod between the lower and middle rollers. Simultaneously, the upper and lower sprocket drive mechanisms are activated, transmitting the sucker rod to the lower rotary clamping mechanism for laser cutting. During the downward movement of the middle roller, the positioning rod is simultaneously driven upwards. At this point, the feeding mechanism is activated again, pushing the sucker rod onto the middle roller. The middle roller is then moved upwards to reset, clamping the sucker rod between the middle and upper rollers. After the lower sucker rod is laser-cut, the lower sprocket drive mechanism is activated, transmitting the sucker rod to the upper rotary clamping mechanism for laser cutting. This process is repeated, enabling alternating cutting of the two sets of sucker rods, providing a more efficient auxiliary function for laser cutting.

[0016] 2. By setting up structures such as upper rolling pressure sensors and lower rolling pressure sensors, this invention can clamp sucker rods of different specifications between the lower roller and the middle roller, or between the middle roller and the upper roller, thereby improving the applicability of the device. Attached Figure Description

[0017] Figure 1 This is a frontal perspective view of the welding auxiliary device of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the welding auxiliary device of the present invention; Figure 3 This is a partial top view of the three-dimensional structure of the conveyor frame of the present invention; Figure 4 This is a partial side-section three-dimensional structural diagram of the conveyor frame of the present invention; Figure 5 This is a three-dimensional structural diagram of the upper roller, lower roller, middle roller, and feeding plate of the present invention. Figure 6 This is a schematic diagram of the middle plate, positioning rod, and lower roller structure of the present invention; Figure 7 Appendix of the present invention Figure 6 A magnified view of the structure at point A in the middle; Figure 8 This is a partial three-dimensional structural diagram of the lower sprocket drive mechanism and the middle roller of the present invention; Figure 9 This is a partial three-dimensional structural diagram of the drive shaft, feeding plate, and guide rail of the present invention. Figure 10 This is a schematic diagram of a partial cross-sectional view of the side of the conveyor frame of the present invention; Figure 11 This is a schematic diagram of the overall appearance structure of the positioning rod, lower plate, and pull rope of the present invention.

[0018] In the diagram: 1. Main unit; 2. Loading rack; 3. Conveyor rack; 4. Unloading conveyor line; 5. Upper rotary clamping mechanism; 6. Laser cutting mechanism; 7. Lower roller; 8. Vertical plate; 9. Middle plate; 10. Middle roller; 11. Upper roller; 12. Positioning rod; 13. Upper sprocket drive mechanism; 14. Lower rotary clamping mechanism; 15. Lifter; 16. Loading motor; 17. Rotary seat; 18. Drive shaft; 19. Guide rail; 20. Loading plate; 21. 21. Gear; 22. Push block; 23. Electric telescopic cylinder; 24. Upper guide roller; 25. Pull rope; 26. Middle guide roller; 27. Lower guide roller; 28. Lower plate; 29. ​​Vertical groove; 30. Through groove; 31. Fixing plate; 32. Return spring; 33. Lower sprocket drive mechanism; 34. L-shaped bracket; 35. Upper plate; 36. Bottom rod; 37. Upper rolling pressure sensor; 38. Top rod; 49. Lower rolling pressure sensor. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] In practical use, it has been found that the current laser cutting of sucker rods generally adopts a single-station production mode. During operation, the loading machine automatically transports a single sucker rod to the laser cutting station. After being fixed by the chuck clamp, the laser head completes the cutting. After the cutting is completed, the clamp is released, the finished product and waste are discharged, and the equipment is reset before the next sucker rod can be loaded. This single-station serial processing method results in a significant waiting and idle period for the laser cutting machine. During the loading and unloading, clamping and positioning, and discharge and reset stages, the laser cutting head and optical path system are in a non-productive state, and the effective cutting time accounts for too low a percentage. Moreover, the long non-productive waiting time seriously restricts the increase in production capacity, causes ineffective energy dissipation of the laser equipment, and increases the unit processing cost. To solve the above problems, the following structure is invented.

[0022] like Figures 1-11 The illustrated auxiliary device for machining sucker rod includes a main unit 1, a loading rack 2, a conveyor rack 3, and a unloading conveyor line 4. The unloading conveyor line 4 is composed of a conveyor chain, conveyor rollers, and a conveyor motor, which are mature technologies in the prior art and will not be described in detail here. The conveyor rack 3 is fixedly connected to the side wall of the loading rack 2 and the rear side of the main unit 1. The unloading conveyor line 4 is located on the front side of the main unit 1. The main unit 1 is longitudinally equipped with an upper rotating clamping mechanism 5 and a lower rotating clamping mechanism 14 for rotating and clamping the sucker rod. Both the upper rotating clamping mechanism 5 and the lower rotating clamping mechanism 14 are composed of a power chuck and a servo rotating system. During operation, the hydraulic or pneumatic chuck radially clamps the outer wall of the sucker rod, and the servo motor drives the chuck to rotate circumferentially through a reduction transmission, thereby driving the sucker rod to rotate uniformly around its axis. The laser cutting head is relatively fixed or axially fed, and works with the rotation of the rod to achieve ring cutting or beveling. After cutting, the chuck switches to friction wheel clamping mode, and the longitudinal module starts to push the finished rod segment forward to the unloading position, or retreats to the return position to receive new material. The main unit 1 is equipped with a longitudinally movable laser cutting mechanism 6. The laser cutting head of the laser cutting mechanism 6 is mounted on the longitudinal linear slide rail via a slide block. The servo motor drives the lead screw or synchronous belt to make the cutting head move precisely along the axial direction of the sucker rod. During operation, the upper rotating clamping mechanism 5 or the lower rotating clamping mechanism 14 is fixed and drives the sucker rod to rotate. The longitudinal moving mechanism positions the laser head to the predetermined cutting position, or moves and cuts at the set feed speed to achieve segmented fixed-length cutting. The conveyor frame 3 is H-shaped. Several lower rollers 7 are rotatably connected to the inner side of the conveyor frame 3. The conveyor frame 3 is equipped with a feeding mechanism for transferring the oil sucker rod on the feeding frame 2 to the lower rollers 7. The conveyor frame 3 is a hollow structure. Several pairs of vertical plates 8 are longitudinally slidably connected to the inner side of the conveyor frame 3 away from the feeding frame 2. A middle plate 9 is fixedly connected between the tops of the pairs of vertical plates 8. Several middle rollers 10 are rotatably connected to the side wall of the middle plate 9. An upper roller 11 is provided above each of the middle rollers 10. A U-shaped positioning rod 12 is longitudinally slidably connected to the other side of the conveyor frame 3. The top of the positioning rod 12 is inclined. An adjustment mechanism is also provided for driving the vertical plates 8 to move down and adjusting the height of the positioning rod 12 at the same time.

[0023] The top of the feeding rack 2 is inclined toward the conveyor rack 3 to facilitate guiding the stored sucker rods toward the conveyor rack 3. The inclined surface at the top of the positioning rod 12 is inclined toward the middle plate 9 to facilitate the feeding sucker rods sliding onto the lower roller 7 or the middle roller 10.

[0024] The side wall of the conveyor frame 3 is provided with an upper sprocket drive mechanism 13 for simultaneously driving multiple lower rollers 7 to rotate. The upper sprocket drive mechanism 13 is mainly composed of a motor, a double-groove sprocket, and multiple chains, which is a mature technology in the prior art and will not be described in detail here. The lower rollers 7 are located next to the lower rotating clamping mechanism 14 and are located below the center of the lower rotating clamping mechanism 14. The upper rollers 11 are located next to the upper rotating clamping mechanism 5 and are located above the center of the upper rotating clamping mechanism 5.

[0025] The main unit 1 is equipped with a lifting device 15 on the front side. The unloading conveyor line 4 is fixedly connected to the lifting end of the lifting device 15. The lifting device 15 facilitates the lifting of the unloading conveyor line 4 to the unloading position of the upper rotating clamping mechanism 5 and the lower rotating clamping mechanism 14.

[0026] The feeding mechanism includes a feeding motor 16. Several rotating seats 17 are fixedly connected to the bottom of the conveyor frame 3. A drive shaft 18 is rotatably connected between the rotating seats 17. The feeding motor 16 is fixedly connected to the rear side of the conveyor frame 3. The output end of the feeding motor 16 is fixedly connected to the side wall of the drive shaft 18. Several guide rails 19 are fixedly connected to the side wall of the conveyor frame 3. A feeding plate 20 is longitudinally slidably connected to each of the guide rails 19. Several toothed grooves 21 are equally spaced on the side wall of the feeding plate 20. Several gears 22 are fixedly connected to the outer wall of the drive shaft 18. The gears 22 are located next to the toothed grooves 21 and mesh with each other. A push block 23 is fixedly connected to the top of the feeding plate 20. The push block 23 is located at the front side of the feeding frame 2.

[0027] The adjustment mechanism includes an electric telescopic cylinder 24, and several electric telescopic cylinders 24 are provided. All electric telescopic cylinders 24 are fixedly connected to the side wall of the conveyor frame 3. An upper guide roller 25 is provided at the top of the inner side of the positioning rod 12. The upper guide roller 25 is rotatably connected to the inner side of the conveyor frame 3. A pull rope 26 is fixedly connected to the bottom of the inner side of the positioning rod 12. A middle guide roller 27 and a lower guide roller 28 are rotatably connected to both sides of the inner wall of the transverse end of the conveyor frame 3, respectively. A lower plate 29 is fixedly connected between the bottom ends of each pair of vertical plates 8. A vertical groove 30 is opened in the side wall of the conveyor frame 3. The lower plate 29 is longitudinally slidably connected to the inner side of the vertical groove 30. The other end of the pull rope 26 passes over the upper guide roller 25, then passes under the middle guide roller 27 and over the lower guide roller 28, and is fixedly connected to the top of the lower plate 29. The output ends of the electric telescopic cylinders 24 are all fixedly connected to the top of the lower plate 29.

[0028] The side wall of the positioning rod 12 is provided with a through groove 31. The top of the through groove 31 is provided with a fixing plate 32. The fixing plate 32 is fixedly connected to the inside of the conveyor frame 3. The bottom end of the fixing plate 32 is fixedly connected to a return spring 33. The bottom end of the return spring 33 is fixedly connected to the bottom of the through groove 31.

[0029] The side wall of the middle plate 9 is provided with a lower sprocket drive mechanism 34 for driving multiple middle rollers 10 to rotate simultaneously. The lower sprocket drive mechanism 34 is mainly composed of a motor, a double-groove sprocket and multiple chains, etc. It is a mature technology in the prior art and will not be described in detail here. The side wall of the conveyor frame 3 is fixedly connected with three L-shaped brackets 35, and the upper plate 36 is fixedly connected between the three L-shaped brackets 35. The upper rollers 11 are all rotatably connected to the side wall of the upper plate 36.

[0030] During the laser cutting process of the sucker rod, the sucker rod blank is first placed on the loading rack 2 (the sucker rod needs to be stacked in one layer on the loading rack 2). At this time, the sucker rod will roll down to the side of the conveyor rack 3 under its own weight. Then, the loading motor 16 is started to drive the transmission shaft 18 and gear 22 to rotate. At this time, the gear 22 will drive the meshing tooth groove 21 to move upward, thereby driving the loading plate 20 and push block 23 to move upward. At this time, the push block 23 will push the sucker rod closest to the conveyor rack 3 to move upward until the sucker rod moves to the top of the positioning rod 12, thereby releasing the restriction on the sucker rod. At this time, the sucker rod will roll down to the conveyor rack 3 under its own weight and land on the lower roller 7. At this time, the electric telescopic cylinder 24 can be started to drive the lower plate 29 to move downward, thereby driving the middle roller 10 to move downward through the vertical plate 8 and the middle plate 9, clamping the sucker rod between the middle roller 10 and the lower roller 7. During the process of the electric telescopic cylinder 24 driving the lower plate 29 to move downward, the pull rope 26 will be pulled downward. At this time, under the guidance of the lower guide roller 28 and the middle guide roller 27, the pull rope 26 will be pulled down from the upper guide roller 25, which will cause the pull rope 26 to pull the positioning rod 12 to move upward. The through groove 31 moves upward together with the positioning rod 12. The bottom end of the through groove 31 and the bottom end of the fixed plate 32 will have relative displacement. The reset spring 33 will be compressed until the middle roller 10 clamps the sucker rod. At this point, the upper sprocket drive mechanism 13 and the lower sprocket drive mechanism 34 can be started to transmit the sucker rod to the lower rotary clamping mechanism 14. Then, the lower rotary clamping mechanism 14 is started to clamp the sucker rod and drive it to rotate (it should be noted that the clamping force of the lower roller 7 and the middle roller 10 will not hinder the rotation of the sucker rod). The laser cutting mechanism 6 is then started to laser cut the sucker rod. At this time, the feeding motor 16 can be started to drive the transmission shaft 18 and the gear 22 to rotate. The gear 22 will drive the meshing tooth groove 21 to move upward. This drives the feeding plate 20 and push block 23 to move upward. At this time, push block 23 will push the sucker rod closest to the conveyor frame 3 to move upward until the sucker rod moves to the top of the positioning rod 12 (it should be noted that due to the rise of the positioning rod 12, the two feeding mechanisms have different travel strokes, which can be controlled by a timing sensor). This releases the restriction on the sucker rod, and the sucker rod will roll down onto the conveyor frame 3 under its own weight and land on the middle roller 10. Then, the electric telescopic cylinder 24 drives the lower plate 29 to move up and reset, and repeats the above operation in reverse to clamp the sucker rod between the middle roller 10 and the upper roller 11. After the sucker rod on the lower rotary clamping mechanism 14 is laser-cut, the lower rotary clamping mechanism 14 transmits the sucker rod to the unloading conveyor line 4 for discharge, and controls the laser cutting mechanism 6 to move upward. At this time, the lower sprocket drive mechanism 34 can be controlled to start driving the middle roller 10 to rotate, thereby transmitting the sucker rod to the upper rotary clamping mechanism 5. The upper rotary clamping mechanism 5 can then be controlled to start clamping the sucker rod. Subsequently, the laser cutting mechanism 6 is controlled to run, and the upper rotary clamping mechanism 5 is controlled to drive the sucker rod to rotate. At this time, the controllable... The feeding mechanism operates, feeding the sucker rod onto the lower roller 7. After the sucker rod is laser-cut in the upper rotary clamping mechanism 5, the lifting device 15 is controlled to raise and lower the unloading conveyor line 4 to the side of the upper rotary clamping mechanism 5. Then, the upper rotary clamping mechanism 5 is controlled to discharge the material, while the middle roller 10 is controlled to move downward (at this time, the rear end of the discharged sucker rod will deform downward as the middle roller 10 moves downward, but this will not affect the normal discharge of the sucker rod). The sucker rod below is clamped and conveyed. This process is repeated to achieve alternating cutting of the two sets of sucker rods.

[0031] In summary, with the above structural design, the sucker rod only needs to be pushed onto the lower roller 7 by the feeding mechanism. Then, the adjusting mechanism drives the middle roller 10 to move downward, clamping the sucker rod between the lower roller 7 and the middle roller 10. The upper sprocket drive mechanism 13 and the lower sprocket drive mechanism 34 can then be activated to transmit the sucker rod to the lower rotary clamping mechanism 14 for laser cutting. During the downward movement of the middle roller 10, the positioning rod 12 will be driven upward simultaneously. At this time, the feeding mechanism can be activated again to push the sucker rod onto the middle roller 10. Then, the middle roller 10 is controlled to move upward and reset, clamping the sucker rod between the middle roller 10 and the upper roller 11. After the lower sucker rod is laser-cut, the lower sprocket drive mechanism 34 is activated to transmit the sucker rod to the upper rotary clamping mechanism 5 for laser cutting. This process is repeated to achieve alternating cutting of the two sets of sucker rods, providing a more efficient auxiliary function for laser cutting.

[0032] Based on the above embodiments, it was found during use that the above structure can only control the movement of the middle roller 10 to a fixed stroke distance, and cannot clamp and transport sucker rods of different sizes, which is quite limited. In order to solve the above problems, the above structure has been further improved.

[0033] The upper roller 11 is positioned directly above the lower roller 7. The middle roller 10 is staggered with the upper roller 11 and the lower roller 7. This staggered arrangement facilitates the clamping and conveying of smaller sucker rods and prevents the middle roller 10 from being obstructed by the upper roller 11 and the lower roller 7 when it moves up and down. The lower roller 7, the middle roller 10, and the upper roller 11 are all V-shaped rubber rollers.

[0034] A bottom rod 37 is fixedly connected to the side wall of the middle plate 9. An upper rolling pressure sensor 38 is fixedly connected to the bottom end of the bottom rod 37. A top rod 39 is fixedly connected to the side wall of the upper plate 36. A lower rolling pressure sensor 40 is fixedly connected to the bottom end of the top rod 39. When the contact end of the upper rolling pressure sensor 38 or the lower rolling pressure sensor 40 contacts the sucker rod, gravity is transmitted to the elastic body through the roller to generate deformation. The strain gauge converts the mechanical deformation into an electrical signal, which is then amplified by the circuit to output the pressure value. The pressure state of the sucker rod is monitored in real time. The use of a rolling pressure sensor ensures that the contact end of the rolling pressure sensor will not be affected during the sucker rod transmission process, thus avoiding affecting the service life of the equipment.

[0035] When the middle roller 10 moves downward and clamps the sucker rod between the middle roller 10 and the lower roller 7, the movement of the middle plate 9 will cause the bottom rod 37 and the upper rolling pressure sensor 38 to move downward together. When the middle roller 10 contacts the sucker rod, the bottom end of the upper rolling pressure sensor 38 also contacts the sucker rod. When the upper rolling pressure sensor 38 squeezes the sucker rod to the specified pressure, it will transmit a signal to the controller. The controller will control the electric telescopic cylinder 24 to stop running, thereby realizing the clamping and conveying of sucker rods of different sizes. When the middle roller 10 moves the sucker rod upward, the same applies, causing the top end of the sucker rod to contact the bottom end of the lower rolling pressure sensor 40. When the specified pressure is reached, the lower rolling pressure sensor 40 will transmit a signal to the controller, and the controller will control the electric telescopic cylinder 24 to stop running.

[0036] In summary, the above-described structure allows for the clamping of sucker rods of different specifications between the lower roller 7 and the middle roller 10, or between the middle roller 10 and the upper roller 11, thereby improving the applicability of the device.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0038] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A sucker rod machining auxiliary device, comprising a main machine (1), a feeding rack (2), a conveying rack (3) and a discharging conveying line (4), characterized in that: The conveying frame (3) is fixedly connected to the side wall of the feeding frame (2), the conveying frame (3) is fixedly connected to the rear side of the main machine (1), the discharging conveying line (4) is arranged on the front side of the main machine (1), the main machine (1) is longitudinally provided with an upper rotary clamping mechanism (5) and a lower rotary clamping mechanism (14) for rotating and clamping the sucker rod, the main machine (1) is provided with a longitudinally movable laser cutting mechanism (6), the conveying frame (3) is in the shape of an H-shaped frame, a plurality of lower rollers (7) are rotatably connected to the inner side of the conveying frame (3), the conveying frame (3) is provided with a feeding mechanism for moving the sucker rod on the feeding frame (2) to the lower roller (7), the conveying frame (3) is a hollow structure, a plurality of pairs of vertical plates (8) are longitudinally slidably connected to the inner side of the conveying frame (3) away from the feeding frame (2), a plurality of pairs of the vertical plates (8) are fixedly connected between the top ends of the vertical plates (8), a plurality of middle rollers (10) are rotatably connected to the side wall of the middle plate (9), an upper roller (11) is arranged above each of the plurality of middle rollers (10), and a positioning rod (12) in the shape of a U is longitudinally slidably connected to the other side of the conveying frame (3), the top end of the positioning rod (12) is obliquely arranged, and an adjusting mechanism for driving the vertical plate (8) to move downward and adjusting the height of the positioning rod (12) is further arranged.

2. A mechanical processing auxiliary device for sucker rod as claimed in claim 1, characterized in that: The top end of the feeding frame (2) is obliquely arranged towards the side of the conveying frame (3), the upper roller (11) is arranged directly above the lower roller (7), the middle roller (10) is arranged in an interlaced manner between the upper roller (11) and the lower roller (7), and the inclined surface of the top end of the positioning rod (12) is arranged towards the side of the middle plate (9).

3. A mechanical processing auxiliary device for sucker rod as claimed in claim 1, characterized in that: The side wall of the conveying frame (3) is provided with an upper sprocket drive mechanism (13) for simultaneously driving a plurality of lower rollers (7) to rotate, the lower roller (7) is arranged beside the lower rotary clamping mechanism (14), and the lower roller (7) is located below the center of the lower rotary clamping mechanism (14), the upper roller (11) is arranged beside the upper rotary clamping mechanism (5), and the upper roller (11) is located above the center of the upper rotary clamping mechanism (5), and the lower roller (7), the middle roller (10) and the upper roller (11) are all V-shaped rubber rollers.

4. The apparatus of claim 1, wherein: The front side of the main machine (1) is provided with a lifter (15), and the discharging conveying line (4) is fixedly connected to the lifting end of the lifter (15).

5. The apparatus of claim 1, wherein: The feeding mechanism comprises a feeding motor (16), the bottom end of the conveying frame (3) is fixedly connected with a plurality of rotating seats (17), a transmission shaft (18) is rotatably connected between the plurality of rotating seats (17), the feeding motor (16) is fixedly connected to the rear side of the conveying frame (3), the output end of the feeding motor (16) is fixedly connected to the side wall of the transmission shaft (18), the side wall of the conveying frame (3) is fixedly connected with a plurality of guide rails (19), a plurality of feeding plates (20) are longitudinally and slidably connected to the guide rails (19), a plurality of tooth grooves (21) are equidistantly formed in the side wall of the feeding plate (20), a plurality of gears (22) are fixedly connected to the outer wall of the transmission shaft (18), the gears (22) are arranged beside the tooth grooves (21) and are in meshing connection with the tooth grooves (21), the top end of the feeding plate (20) is fixedly connected with a push block (23), and the push block (23) is arranged on the front side of the feeding frame (2).

6. A mechanical processing auxiliary device for sucker rod as claimed in claim 1, characterized in that: The adjusting mechanism comprises a plurality of electric telescopic cylinders (24), the electric telescopic cylinders (24) are fixedly connected to the side wall of the conveying frame (3), the inner top end of the positioning rod (12) is provided with an upper guide roller (25), the upper guide roller (25) is rotatably connected to the inner side of the conveying frame (3), the inner bottom end of the positioning rod (12) is fixedly connected with a pull rope (26), the inner wall of the horizontal end of the conveying frame (3) is rotatably connected with a middle guide roller (27) and a lower guide roller (28) on both sides, a lower plate (29) is fixedly connected between the bottom end of each pair of vertical plates (8), a vertical groove (30) is formed in the side wall of the conveying frame (3), the lower plate (29) is longitudinally and slidably connected to the inner side of the vertical groove (30), the other end of the pull rope (26) is fixedly connected to the top end of the lower plate (29) after being wound over the upper guide roller (25) from above and the middle guide roller (27) and the lower guide roller (28) from below, and the output end of the electric telescopic cylinder (24) is fixedly connected to the top end of the lower plate (29).

7. A mechanical processing aid for sucker rods as claimed in claim 6, characterized in that: A through groove (31) is formed in the side wall of the positioning rod (12), a fixed plate (32) is arranged at the inner top end of the through groove (31), the fixed plate (32) is fixedly connected to the inner side of the conveying frame (3), a reset spring (33) is fixedly connected to the bottom end of the fixed plate (32), and the bottom end of the reset spring (33) is fixedly connected to the bottom of the through groove (31).

8. The apparatus of claim 1, wherein: The side wall of the middle plate (9) is provided with a lower sprocket drive mechanism (34) for driving a plurality of middle rollers (10) to rotate simultaneously, the side wall of the conveying frame (3) is fixedly connected with three L-shaped supports (35), the three L-shaped supports (35) are fixedly connected with an upper plate (36), and the upper rollers (11) are rotatably connected to the side wall of the upper plate (36).

9. A mechanical processing aid for sucker rods as set forth in claim 8, characterized in that: The side wall of the middle plate (9) is fixedly connected with a bottom rod (37), the bottom end of the bottom rod (37) is fixedly connected with an upper rolling type pressure sensor (38), the side wall of the upper plate (36) is fixedly connected with a top rod (39), and the bottom end of the top rod (39) is fixedly connected with a lower rolling type pressure sensor (40).

Images