A tubular rod lifting device

Abstract

The utility model discloses a kind of pipe rod lifting devices, including bottom frame, support frame is provided on bottom frame, the rear end of support frame is hinged with the first lifting frame that can be lifted, the front end of support frame is hinged with lifting folding arm and lifting folding arm compatible lifting cylinder, lifting cylinder is used to drive lifting folding arm to fold, unfold;Lifting folding end away from support frame is hinged on lifting frame.The utility model can effectively solve at least one problem in the prior art problem existing in prior art.

Description

Technical Field

[0001] This utility model relates to the field of automated well workover technology in oilfields, specifically to a tubing lifting device. Background Technology

[0002] The pipe hoist, also known as a catwalk, is an important component of automated drilling and workover equipment in the oilfield. It is a high-tech product integrating mechanics, electronics, and hydraulics, used for the forward / reverse transport of pipes between the surface pipe delivery area and the wellhead working area. It is a specialized piece of equipment designed to address the challenges of drilling and workover operations, including difficulties, high labor intensity, and safety concerns, in response to the current state of oilfield operations.

[0003] When drilling and workover operations are required, the catwalk must be transported to the designated location at the well site in advance. During the pipe pulling and running operations in the well, the pipes need to be transported back and forth between the wellhead and the surface pipe rack. A single pipe can weigh anywhere from tens to hundreds of kilograms, and relying solely on manual labor for pulling and supporting is extremely laborious, inefficient, and prone to accidents.

[0004] The catwalk is equipped with a small pulley device. During pipe pulling and lowering operations, the wellhead clamp holds the upper end of the pipe rod, while the lower end of the pipe rod is supported by the small pulley. The pipe rod is automatically transported by moving the small pulley back and forth.

[0005] When transporting pipe rods, the transport track of the small trolley must first be raised to a predetermined height before the next transport operation can be carried out. The lifting mechanism of the track directly affects the accuracy and efficiency of the work.

[0006] Field surveys in the oilfield revealed that when well workover operations are required, the catwalk must be transported to the designated location at the well site in advance, and the overall size of the catwalk directly affects the transportation efficiency. During catwalk-based tubing delivery operations, the stability of the track lifting structure directly affects the accuracy and efficiency of the tubing delivery work. Existing catwalk structures have the following defects; Conventional catwalk designs are relatively long to accommodate the length of the tubing, which places higher demands on delivery vehicles and makes relocation and transportation of the catwalk difficult. It may even limit the normal use of equipment due to the size of the well site.

[0007] When catwalks are used in oil well operations, the lifting height and position of the tubing delivery track must be determined according to the actual needs of the site. The stability of the lifting structure of the delivery track directly affects whether the small trolley can deliver the tubing to the designated position normally, which is related to the accuracy and efficiency of the tubing delivery work.

[0008] The catwalk trolley operates by transmitting power through a traction chain. The length of the chain is determined by the trolley's travel distance. Due to its long length, the chain sags and wobbles excessively, resulting in insufficient stability and affecting the trolley's operational stability. Summary of the Invention

[0009] The purpose of this invention is to provide a tube rod lifting device that can effectively solve at least one of the problems existing in the prior art.

[0010] The technical problem solved by this utility model is: a tube rod lifting device, characterized in that: it includes a base frame, a support frame is provided on the base frame, a lifting frame that can be raised and lowered is hinged to the rear end of the support frame, a lifting folding arm and a lifting cylinder adapted to the lifting folding arm are hinged to the front end of the support frame, the lifting cylinder is used to drive the lifting folding arm to fold and unfold; the end of the lifting folding arm opposite to the support frame is hinged to the lifting frame; The primary lifting frame is equipped with a secondary slide rail that can be raised and lowered along with it, and the front end of the secondary slide rail is equipped with a tertiary slide rail that can be raised and lowered along with it; the secondary slide rail can move back and forth on the primary lifting frame; the tertiary slide rail can move back and forth on the secondary slide rail. A secondary translation cylinder is hinged to the primary lifting frame. The cylinder barrel of the secondary translation cylinder is hinged to the rear end of the primary lifting frame, and the piston is hinged to the bottom of the front end of the secondary slide. The secondary translation cylinder is used to push the secondary slide to move back and forth relative to the primary lifting frame. A third-stage translation cylinder is hinged to the second-stage slide rail. The cylinder barrel of the third-stage translation cylinder is hinged to the rear end of the second-stage slide rail, and the piston part is hinged to the front end of the third-stage slide rail. The third-stage translation cylinder is used to push the third-stage slide rail to move back and forth relative to the second-stage slide rail. It also includes trolleys that can move back and forth on secondary and tertiary tracks.

[0011] Furthermore, a lifting folding arm is located at each of the left and right ends of the front end of the primary lifting frame, and two lifting cylinders are provided, with one lifting cylinder corresponding to each lifting folding arm; the two lifting hydraulic pipes are of the same model and specification, and the two lifting folding arms are of the same model and specification; each lifting folding arm includes a first connecting arm and a second connecting arm that are hinged sequentially; the end of the first connecting arm opposite to the second connecting arm is hinged to the support frame; the end of the second connecting arm opposite to the first connecting arm is hinged to the bottom of the front end of the primary lifting frame; the cylinder end of the lifting cylinder is hinged to the support frame. On the frame, the top of the piston is hinged to the lower part of the second connecting arm; a lifting connecting plate is provided between the first connecting arms of the two lifting folding arms; the support frame is provided with a lower hinge seat for each lifting cylinder, and the hinge shafts of each lower hinge seat are coaxially arranged; the lifting cylinder and the first connecting arm of the same lifting folding arm are coaxially hinged on the same hinge shaft of the same lower hinge seat; the first-stage lifting frame is provided with an upper hinge seat for each second connecting arm, and the hinge shafts of each upper hinge seat are coaxially arranged, and the second connecting arm is hinged on the hinge shaft of the upper hinge seat.

[0012] Furthermore, the first-stage lifting frame is provided with inward-facing first-stage guide grooves on both the left and right sides, and the side walls on the left and right sides of the second-stage slide are respectively provided with a set of first-stage limiting rollers and a set of sliding rollers; the first-stage limiting rollers are adapted to the bottom of the first-stage guide grooves, and the sliding rollers are connected to the bottom inner side wall of the first-stage guide grooves.

[0013] Furthermore, the secondary slide has secondary outer square grooves and secondary inner square grooves formed on both the left and right sides, with the secondary outer square grooves and secondary inner square grooves on the same side of the secondary slide arranged back to back; the bottom of the secondary inner square groove is suspended, and the top is lower than the secondary outer square groove; the tertiary slide has tertiary outer square grooves with outward openings on both the left and right sides, and each tertiary outer square groove is fitted onto the secondary inner square groove on the same side; the top end faces of the tertiary outer square groove and the secondary outer square groove are flush; the sliding roller and the first limiting roller are set on the side wall where the bottom of the secondary outer square groove is located; the secondary slide has a tertiary guide groove on the top end face of the secondary inner square groove, and the tertiary slide has a tertiary guide strip adapted to the tertiary guide groove on the top inner side wall of the tertiary outer square groove.

[0014] Furthermore, the trolley is equipped with inner and outer rows of rollers on its left and right sides respectively. The inner row of rollers is adapted to the top end face of the third-level outer square groove; the outer row of rollers is adapted to the top end face of the second-level outer square groove; the trolley is also equipped with second limiting rollers located below the inner and outer rows of rollers on both sides. Each second limiting roller is set in the groove of the second-level outer square groove on the same side and is connected to the bottom of the second-level outer square groove.

[0015] Furthermore, an inner track sprocket is installed at each of the front and rear ends of the third-stage outer square groove, and an outer track sprocket is installed at each of the front and rear ends of the second-stage inner square groove; the inner and outer track sprockets are staggered vertically; a hydraulic motor is installed at the rear end of the second-stage slide, and a sprocket assembly is connected to the hydraulic motor; a front buffer spring and a rear buffer spring are installed on the trolley, with the rear buffer spring facing the sprocket assembly and the front buffer spring facing the inner track sprocket at the front end of the third-stage outer square groove; a chain is installed on the sprocket assembly, with one end connected to the rear buffer spring; the other end passes sequentially through the sprocket assembly, the outer track sprocket at the rear end of the second-stage inner square groove, the outer track sprocket at the front end of the second-stage inner square groove, the inner track sprocket at the rear end of the third-stage outer square groove, and the inner track sprocket at the front end of the third-stage outer square groove before connecting to the front buffer spring; the sprocket assembly, the inner track sprocket, and the outer track sprocket are on the same meshing surface.

[0016] Furthermore, each of the four corners of the base frame is provided with an ear seat, and each ear seat is hinged to the bottom of an adjusting leg. Each ear seat is provided with an adjusting leg cylinder above the adjusting leg, and each adjusting leg cylinder is provided with an independent oil supply line. The cylinder part of the adjusting leg cylinder is hinged to the upper part of the ear seat, and the piston part of the adjusting leg cylinder is connected to the front end of the adjusting leg. A contact plate is hinged to the front end of the adjusting leg away from the ear seat.

[0017] Furthermore, each lifting cylinder, secondary translation cylinder, and tertiary translation oil pipe is equipped with an independent oil supply line; each oil supply line is equipped with a hydraulic valve assembly, which is connected to the hydraulic system; the hydraulic valve assembly includes a set of explosion-proof solenoid directional valves; and a hydraulic oil cooler is also provided.

[0018] Furthermore, the trolley is equipped with a tube rod mounting groove for mounting tube rods, and a rubber pad is installed inside the tube rod mounting groove; a tube rod guide seat is installed at the front end of the three-stage slide, and a V-shaped roller adapted to the tube rod is installed on the tube rod guide seat.

[0019] Furthermore, upper and lower tube mechanisms are respectively provided on the left and right sides of the support frame. The upper and lower tube mechanisms include upper and lower tube hydraulic motors installed on the support frame. The upper and lower tube hydraulic motors are connected to a reducer. A rotating shaft is connected to the front and rear sides of the reducer, and the two rotating shafts are coaxially arranged. A robotic arm that can rotate with the reducer is provided at the end of the rotating shaft away from the reducer for picking up and placing the tube rod.

[0020] The beneficial effects of this utility model are as follows: 1. By driving the lifting folding arm to fold and unfold through the lifting hydraulic cylinder, the front end of the primary lifting frame is raised and lowered, thereby raising and lowering the secondary and tertiary slides. Simultaneously, the secondary slide can move back and forth on the primary lifting frame; the tertiary slide can move back and forth on the secondary slide, allowing the secondary and tertiary slides to retract and extend relative to the primary lifting frame. When extended, the secondary and tertiary slides extend outwards to the front and rear ends of the primary lifting frame, respectively, increasing the overall length of the primary lifting frame, secondary slides, and tertiary slides. When retracted, the ends of the secondary and tertiary slides away from the primary lifting frame move towards the primary lifting frame, reducing the overall length of the primary lifting frame, secondary slides, and tertiary slides. When the secondary and tertiary slides are fully retracted, they reach their shortest length, facilitating transport. Furthermore, the overall length of the primary lifting frame, secondary slides, and tertiary slides can be flexibly adjusted according to the size and needs of the oil well site.

[0021] 2. One lifting folding arm is located at each of the left and right ends of the front end of the first-stage lifting frame. A lifting connecting plate is installed between the first connecting arms of the two lifting folding arms, which increases the strength and ensures that the two lifting folding arms move in a unified manner.

[0022] 3. The installation of sliding rollers and first limit rollers can improve the stability and reliability of the secondary slide rail when it moves back and forth relative to the primary lifting frame.

[0023] 4. The secondary outer square groove, the secondary inner square groove, and the tertiary slide are arranged back to back, and the tertiary outer square groove is adapted to the secondary inner square groove; the tertiary outer square groove is fitted on the secondary outer square groove, and when the tertiary slide moves back and forth relative to the secondary slide, it can guide and limit the movement of the tertiary slide.

[0024] The inner and outer rows of rollers are respectively fitted with the upper end of the third-level outer square groove and the top end face of the second-level outer square groove, ensuring that the trolley can slide smoothly on both the second-level and third-level slide tracks. The second limiting roller can limit the sliding of the trolley and improve its stability. The third-level guide groove and third-level guide strip can further ensure the reliability and stability of the movement of the third-level slide track on the second-level slide track.

[0025] The coordination of the inner track sprocket, outer track sprocket, and sprocket assembly, with the inner track sprocket set in the third-level outer square groove and the outer track sprocket set in the second-level inner square groove, ensures that the sprockets remain taut during the retraction and unfolding of the second-level and third-level slides. This alleviates the problem of the chain sagging due to excessive length, achieves foldable storage during chain movement, and improves the stability of the trolley operation.

[0026] 6. The front and rear buffer springs enable a certain degree of self-adaptation in chain tension.

[0027] 7. The coordination between the adjustable outriggers and the adjusting cylinders allows the front end of the adjustable outriggers to be pushed and pulled by controlling the extension and retraction distance of the adjusting cylinders. Because the outriggers are hinged, during lowering, they rotate and lower themselves onto the ground using the hinged position as a fulcrum, releasing the contact plate from the ground and allowing for adjustment. Simultaneously, each outrigger's adjusting cylinder has an independent oil supply line, enabling independent control of the extension and retraction stroke of each outrigger's adjusting oil line. This controls the degree of rotation of the adjustable outriggers, ensuring that each outrigger rotates to meet terrain requirements. Therefore, the entire catwalk can be adjusted according to terrain needs during placement until it lands smoothly. Attached Figure Description

[0028] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the structure of the present invention. In the diagram, the lifting folding arm is in the unfolded state. Figure 2 This is a schematic diagram of the structure of the present invention. In the diagram, the lifting folding arm is in a folded state. Figure 3 This is a schematic diagram showing the positional relationship between the sprocket assembly, the inner track sprocket, and the outer track sprocket when the secondary and tertiary tracks of this utility model are in the deployed state. Figure 4 This is a schematic diagram showing the positional relationship between the sprocket assembly, the inner track sprocket, and the outer track sprocket when the secondary and tertiary tracks of this utility model are in the retracted state. Figure 5 This is a schematic diagram showing the positional relationship between the two-stage and three-stage translation cylinders of this utility model. Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 7 This is a schematic diagram of the pulley structure.

[0030] Figure 8 This is a schematic diagram of the two-stage slide.

[0031] Figure 9 This is a schematic diagram of a three-stage slide.

[0032] In the diagram: 1. Base frame, 2. Support frame, 3. First-stage lifting frame, 4. Lifting cylinder, 5. First connecting arm, 6. Second connecting arm, 8. Lifting connecting plate, 9. Second-stage slide rail, 10. Third-stage slide rail, 12. Middle hinge seat, 13. Lower hinge seat, 14. Upper hinge seat, 15. Mounting recess, 16. Avoidance ramp, 17. Second-stage translation cylinder, 18. Third-stage translation cylinder, 19. Trolley, 20. First-stage guide groove, 21. First limiting roller, 22. Sliding roller, 24. Second-stage outer square groove, 25. Second-stage inner square groove, 26. Third... 27. Outer square groove, 28. Inner row roller, 29. Outer row roller, 30. Hydraulic motor, 31. Sprocket assembly, 32. Outer track sprocket, 33. Inner track sprocket, 34. Chain, 35. Front buffer spring, 36. Rear buffer spring, 37. Ear seat, 38. Adjustable support leg, 39. Support leg adjusting cylinder, 40. Pipe rod mounting groove, 41. Rubber pad, 42. Pipe rod guide seat, 43. V-shaped roller, 44. Rotating shaft, 45. Robotic arm, 46. Contact plate, 47. Second limit roller, 48. Third-stage guide groove, 49. Third-stage guide bar. Detailed Implementation

[0033] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0034] Please see Figures 1-9 As shown, a tubular rod lifting device includes a base frame 1, a support frame 2 mounted on the base frame 1, a lifting frame 3 hinged to the rear end of the support frame 2, and a lifting folding arm and a lifting cylinder 4 adapted to the lifting folding arm hinged to the front end of the support frame 2. The lifting cylinder 4 is used to drive the lifting folding arm to fold and unfold. The end of the lifting folding arm opposite to the support frame 2 is hinged to the lifting frame. The primary lifting frame 3 is equipped with a secondary slide rail 9 that can be raised and lowered along with it, and the front end of the secondary slide rail 9 is equipped with a tertiary slide rail 10 that can be raised and lowered along with it; the secondary slide rail 9 can move back and forth on the primary lifting frame 3; the tertiary slide rail 10 can move back and forth on the secondary slide rail 9. A secondary translation cylinder 17 is hinged to the primary lifting frame 3. The cylinder part of the secondary translation cylinder 17 is hinged to the rear end of the primary lifting frame 3, and the piston part is hinged to the bottom of the front end of the secondary slide 9. The secondary translation cylinder 17 is used to push the secondary slide 9 to move back and forth relative to the primary lifting frame 3. A third-stage translation cylinder 18 is hinged to the second-stage slide rail 9. The cylinder part of the third-stage translation cylinder 18 is hinged to the rear end of the second-stage slide rail 9, and the piston part is hinged to the front end of the third-stage slide rail 10. The third-stage translation cylinder 18 is used to push the third-stage slide rail 10 to move back and forth relative to the second-stage slide rail. It also includes a trolley 19 that can move back and forth on the second-stage slide rail 9 and the third-stage slide rail 10.

[0035] One lifting folding arm is located at each of the left and right ends of the front end of the first-stage lifting frame 3. Two lifting cylinders 4 are provided, with one cylinder 4 corresponding to each lifting folding arm. The two lifting hoses are of the same model and specifications, as are the two lifting folding arms. Each lifting folding arm includes a first connecting arm 5 and a second connecting arm 6 that are hinged together. The end of the first connecting arm 5 facing away from the second connecting arm 6 is hinged to the support frame 2. The end of the second connecting arm 6 facing away from the first connecting arm 5 is hinged to the bottom of the front end of the first-stage lifting frame 3. The cylinder end of the lifting cylinder 4 is hinged to the support frame 2, and the piston part... The top is hinged to the lower middle part of the second connecting arm 6; a lifting connecting plate 8 is provided between the first connecting arms 5 of the two lifting folding arms; the support frame 2 is provided with a lower hinge seat 13 corresponding to each lifting cylinder 4, and the hinge shafts of each lower hinge seat 13 are coaxially arranged; the lifting cylinder 4 and the first connecting arm 5 of the same lifting folding arm are coaxially hinged on the same hinge shaft of the same lower hinge seat 13; the first-stage lifting frame 3 is provided with an upper hinge seat 14 corresponding to each second connecting arm 6, and the hinge shafts of each upper hinge seat 14 are coaxially arranged, and the second connecting arm 6 is hinged on the hinge shaft of the upper hinge seat 14.

[0036] When the first-stage lifting frame 3 is in the landing state, the first connecting arm 5 and the second connecting arm 6 are folded and retracted; a middle hinge seat 12 is provided between the first connecting arm 5 and the second connecting arm 6, and a mounting recess 15 is provided on both sides of the front end of the upper end of the support frame 2. The mounting recess 15 is provided with a relief slope 16 that is adapted to the middle hinge seat 12; when the first connecting arm 5 and the second connecting arm 6 are folded and retracted, the middle hinge seat is placed on the mounting recess 15, and one end is in contact with the relief slope 16.

[0037] The first-stage lifting frame 3 has an inward-facing first-stage guide groove 20 on both the left and right sides. The side walls of the second-stage slide 9 are respectively provided with a first limiting roller 21 and a sliding roller 22. The first limiting roller 21 is adapted to the bottom of the first-stage guide groove 20, and the sliding roller 22 is connected to the bottom inner side wall of the first-stage guide groove 20.

[0038] The secondary slide 9 has secondary outer square grooves 24 and secondary inner square grooves 25 formed on both sides. The secondary outer square grooves 24 and secondary inner square grooves 25 on the same side of the secondary slide 9 are arranged back to back. The bottom of the secondary inner square groove 25 is suspended and the top is lower than the secondary outer square groove 24. The tertiary slide 10 has tertiary outer square grooves 26 with outward openings on both sides. Each tertiary outer square groove 26 is fitted onto the secondary inner square groove 25 on the same side. The top end faces of the tertiary outer square grooves 26 and the secondary outer square grooves 24 are flush. The sliding roller 22 and the first limiting roller 21 are set on the side wall where the bottom of the secondary outer square groove 24 is located. The secondary slide 9 has a tertiary guide groove 47 on the top end face of the secondary inner square groove 25. The tertiary slide 10 has a tertiary guide strip 48 that matches the tertiary guide groove 47 on the top inner side wall of the tertiary outer square groove 26.

[0039] The trolley 19 is provided with two rows of inner and outer rollers on its left and right sides respectively. The inner row of rollers 27 is adapted to the top end face of the third-level outer square groove 26; the outer row of rollers 28 is adapted to the top end face of the second-level outer square groove 24; the trolley 19 is also provided with second limiting rollers 46 located below the inner and outer rows of rollers on both sides. Each second limiting roller 46 is located in the groove of the second-level outer square groove 24 on the same side and is connected to the bottom of the second-level outer square groove.

[0040] An inner track sprocket 32 ​​is installed at each of the front and rear ends of the third-stage outer square groove 26, and an outer track sprocket 31 is installed at each of the front and rear ends of the second-stage inner square groove 25; the inner track sprockets 32 and outer track sprockets 31 are staggered vertically; a hydraulic motor 29 is installed at the rear end of the second-stage slide rail 9, and a sprocket assembly 30 is connected to the hydraulic motor 29; a front buffer spring 34 and a rear buffer spring 35 are installed on the trolley 19, with the rear buffer spring 35 facing the sprocket assembly 30 and the front buffer spring 34 facing the front of the third-stage outer square groove 26. The inner track sprocket 32 ​​is installed at one end; a chain 33 is installed on the sprocket assembly 30, one end of which is connected to the rear buffer spring 35; the other end passes sequentially through the sprocket assembly 30, the outer track sprocket 31 at the rear end of the secondary inner square groove 25, the outer track sprocket 31 at the front end of the secondary inner square groove 25, the inner track sprocket 32 ​​at the rear end of the tertiary outer square groove 26, and the inner track sprocket 32 ​​at the front end of the tertiary outer square groove 26 before connecting to the front buffer spring 34; the sprocket assembly 30, the inner track sprocket 32, and the outer track sprocket 31 are on the same meshing surface. Here, "same meshing surface" only means that the sprocket assembly 30, the inner track sprocket 32, the outer track sprocket 31, and the chain 33 can stably mesh and are not prone to disengagement.

[0041] The hydraulic motor 29, in conjunction with the sprocket assembly 30, inner track sprocket 32, outer track sprocket 31, and chain 33, drives the trolley 19 to move. As for the specific working principle of the hydraulic motor 29 and its related cooperating devices, since they are not part of the inventive point of this case, those skilled in the art can flexibly select and adjust them according to existing technology and needs, and will not be elaborated upon here.

[0042] Each of the four corners of the base frame 1 is provided with an ear seat 36. Each ear seat 36 is hinged to the bottom of an adjusting leg 37. Each ear seat 36 is provided with a leg adjusting cylinder 38 above the adjusting leg 37. Each leg adjusting cylinder 38 is provided with an independent oil supply line. The cylinder part of the leg adjusting cylinder 38 is hinged to the upper part of the ear seat 36. The piston part of the leg adjusting cylinder 38 is connected to the front end of the adjusting leg 37. The front end of the adjusting leg 37 away from the ear seat 36 is hinged to a contact plate 45.

[0043] Each lifting cylinder 4 shares a common oil supply line, while the secondary translation cylinder 17 and the tertiary translation oil pipe are each equipped with an independent oil supply line; each oil supply line is equipped with a hydraulic valve group, which is connected to the hydraulic system; the hydraulic valve group includes a set of explosion-proof solenoid directional valves; a hydraulic oil cooler is also provided.

[0044] The hydraulic oil cooler is installed on the return oil line between the hydraulic valve assembly and the oil tank. The cooler is equipped with a temperature sensor and a preset temperature value, and its operation is controlled by the hydraulic system. The temperature sensor detects the hydraulic oil temperature, and when the preset temperature value is exceeded, the hydraulic system opens the cooler through a solenoid valve.

[0045] The innovation of this solution does not lie in the temperature sensor. Therefore, the specific structure and working principle of the heat sink will not be described in detail. Those skilled in the art can make flexible selections and implementations based on the disclosed heat sink and existing technologies.

[0046] The hydraulic valve assembly includes an explosion-proof solenoid directional valve, a relief valve, a throttle valve, and a pressure sensor. The specific working principles between the hydraulic valve assembly, the hydraulic system, and the explosion-proof solenoid directional valve are not the focus of this innovation. Therefore, the specific connection relationships and working principles will not be described in detail here. Those skilled in the art can flexibly select and implement the specific structure and connection relationships based on the disclosed hydraulic valve assembly and existing technology; these will not be elaborated upon here.

[0047] The trolley 19 is provided with a tube rod mounting groove 39 for mounting tube rods, and a rubber pad 40 is provided inside the tube rod mounting groove 39; a tube rod guide seat 41 is provided at the front end of the three-stage slide rail 10, and a V-shaped roller 42 adapted to the tube rod is provided on the tube rod guide seat 41. The V-shaped roller 42 can rotate, and the V-shaped groove in the middle is adapted to the tube rod.

[0048] The support frame 2 is provided with upper and lower tube mechanisms on its left and right sides respectively. The upper and lower tube mechanisms include upper and lower tube hydraulic motors 29 mounted on the support frame 2. The upper and lower tube hydraulic motors 29 are connected to a reducer. A rotating shaft 43 is connected to the front and rear sides of the reducer respectively. The two rotating shafts 43 are coaxially arranged. A robotic arm 44 is provided at the end of the rotating shaft 43 away from the reducer. The robotic arm 44 can rotate with the reducer and is used to pick up and put down the tube rod. The specific structure and working principle of the upper and lower tube mechanisms are not the main innovation of this utility model. Those skilled in the art can implement them based on the existing technology. Therefore, they will not be described in detail here.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pipe rod lifting device, characterized in that: It includes a support frame, with a lifting frame that can be raised and lowered hinged at the rear end of the support frame, and a lifting folding arm and a lifting cylinder adapted to the lifting folding arm hinged at the front end of the support frame. The lifting cylinder is used to drive the lifting folding arm to fold and unfold. The end of the lifting folding arm that is away from the support frame is hinged to the lifting frame. The primary lifting frame is equipped with a secondary slide rail that can be raised and lowered along with it, and the front end of the secondary slide rail is equipped with a tertiary slide rail that can be raised and lowered along with it; the secondary slide rail can move back and forth on the primary lifting frame; the tertiary slide rail can move back and forth on the secondary slide rail. A secondary translation cylinder is hinged to the primary lifting frame. The cylinder barrel of the secondary translation cylinder is hinged to the rear end of the primary lifting frame, and the piston is hinged to the bottom of the front end of the secondary slide. The secondary translation cylinder is used to push the secondary slide to move back and forth relative to the primary lifting frame. A third-stage translation cylinder is hinged to the second-stage slide. The cylinder barrel of the third-stage translation cylinder is hinged to the rear end of the second-stage slide, and the piston is hinged to the front end of the third-stage slide. The third-stage translation cylinder is used to push the third-stage slide to move back and forth relative to the second-stage slide.

2. The pipe lifting device according to claim 1, characterized in that: Each of the four corners of the base frame has an ear seat, and each ear seat has an adjustable support leg hinged to its bottom. Each ear seat is equipped with a support leg adjusting cylinder above the adjusting support leg. Each support leg adjusting cylinder has an independent oil supply line. The cylinder part of the support leg adjusting cylinder is hinged to the upper part of the ear seat, and the piston part of the support leg adjusting cylinder is connected to the front end of the adjusting support leg. The front end of the adjusting support leg away from the ear seat is hinged to a contact plate.

3. The pipe lifting device according to claim 1, characterized in that: One lifting folding arm is located at each of the left and right ends of the front end of the primary lifting frame. Two lifting cylinders are provided, one for each lifting folding arm. The two lifting hoses are of the same type and specification, as are the two lifting folding arms. Each lifting folding arm includes a first connecting arm and a second connecting arm that are hinged together. The end of the first connecting arm facing away from the second connecting arm is hinged to the support frame. The end of the second connecting arm facing away from the first connecting arm is hinged to the bottom of the front end of the primary lifting frame. The cylinder end of the lifting cylinder is hinged to the support frame. The piston is hinged at the top to the lower middle part of the second connecting arm; a lifting connecting plate is provided between the first connecting arms of the two lifting folding arms; a lower hinge seat is provided for each lifting cylinder on the support frame, and the hinge shafts of each lower hinge seat are coaxially arranged; the lifting cylinder and the first connecting arm of the same lifting folding arm are coaxially hinged on the same hinge shaft of the same lower hinge seat; an upper hinge seat is provided for each second connecting arm on the first-stage lifting frame, and the hinge shafts of each upper hinge seat are coaxially arranged, with the second connecting arm hinged on the hinge shaft of the upper hinge seat.

4. The pipe lifting device according to claim 2 or 3, characterized in that: The first-stage lifting frame is provided with inward-facing first-stage guide grooves on both the left and right sides. The side walls of the second-stage slide are provided with a set of first-stage limiting rollers and a set of sliding rollers respectively. The first-stage limiting rollers are adapted to the bottom of the first-stage guide grooves, and the sliding rollers are connected to the bottom inner side wall of the first-stage guide grooves.

5. The pipe lifting device according to claim 4, characterized in that: The secondary slide has secondary outer square grooves and secondary inner square grooves formed on both sides. The secondary outer square grooves and secondary inner square grooves on the same side of the secondary slide are arranged back to back. The bottom of the secondary inner square groove is suspended and the top is lower than the secondary outer square groove. The tertiary slide has tertiary outer square grooves with outward openings on both sides. Each tertiary outer square groove is fitted onto the secondary inner square groove on the same side. The top end faces of the tertiary outer square groove and the secondary outer square groove are flush. The sliding roller and the first limiting roller are set on the side wall where the bottom of the secondary outer square groove is located. The secondary slide has a tertiary guide groove on the top end face of the secondary inner square groove. The tertiary slide has a tertiary guide strip adapted to the tertiary guide groove on the top inner side wall of the tertiary outer square groove.

6. The pipe lifting device according to claim 5, characterized in that: It also includes a trolley that can move back and forth on the secondary and tertiary slides. The trolley has two rows of inner and outer rollers on its left and right sides, respectively. The inner rollers are adapted to the top end face of the tertiary outer square groove; the outer rollers are adapted to the top end face of the secondary outer square groove. The trolley also has second limiting rollers located below the inner and outer rollers on both sides. Each second limiting roller is located in the groove of the secondary outer square groove on the same side and is connected to the bottom of the secondary outer square groove.

7. The pipe lifting device according to claim 5, characterized in that: An inner track sprocket is installed at each end of the third-stage outer square groove, and an outer track sprocket is installed at each end of the second-stage inner square groove. The inner and outer track sprockets are staggered vertically. A hydraulic motor is installed at the rear end of the second-stage slide, and a sprocket assembly is connected to the hydraulic motor. A front buffer spring and a rear buffer spring are installed on the trolley. The rear buffer spring faces the sprocket assembly, and the front buffer spring faces the inner track sprocket at the front end of the third-stage outer square groove. A chain is installed on the sprocket assembly. One end of the chain is connected to the rear buffer spring. The other end passes sequentially through the sprocket assembly, the outer track sprocket at the rear end of the second-stage inner square groove, the outer track sprocket at the front end of the second-stage inner square groove, the inner track sprocket at the rear end of the third-stage outer square groove, and the inner track sprocket at the front end of the third-stage outer square groove before connecting to the front buffer spring. The sprocket assembly, the inner track sprocket, and the outer track sprocket are on the same meshing surface.

Images