Hydraulic dismounting and mounting device of intelligent rotary casing running equipment

Abstract

The invention belongs to the technical field of screwing machines, and particularly relates to an intelligent rotary casing running equipment hydraulic dismounting device which comprises a rack, a screwing mechanism, a fastening mechanism, a clamping mechanism and a hydraulic system. The rotary buckling mechanism and the clamping mechanism are both installed on the rack in a sliding mode, and the tight buckling mechanism is fixedly installed in the middle of the rack. The spinning mechanism and the fastening mechanism are matched to clamp the two pipe shafts respectively, and the pipe shafts are spun through the spinning mechanism; the fastening mechanism and the clamping mechanism are matched to be used for clamping the two pipe shafts correspondingly, and the pipe shafts are fastened or punched through the fastening mechanism. The hydraulic system is used for providing hydraulic power for the spinning mechanism, the fastening mechanism and the clamping mechanism so as to drive the spinning mechanism, the fastening mechanism and the clamping mechanism to act. The disassembling and assembling device can be used for upper buckling and lower buckling between two tubular shafts in threaded connection, screwing and then fastening can be carried out in the upper buckling process, punching and screwing can be carried out in the lower buckling process, the problem that the screwing torque of an existing screwing machine is not accurate can be solved, and it can be ensured that threads are tightened.

Description

Technical Field

[0001] The invention belongs to the technical field of threading machines, and in particular relates to a hydraulic disassembly and assembly device for intelligent rotary casing equipment. Background Art

[0002] The screwdriver is a mechanical device specially used for tightening or removing threaded connections, and is widely used in industries such as petroleum, natural gas, chemical industry, construction, and machinery manufacturing. They are usually used to tighten or remove threaded pipe shafts such as tubing, casing, oil well pumps, packer joints, top drive casing running tools, and downhole tools.

[0003] The existing screwing machine usually screws the pipe shaft into place in one step when screwing it on, which has the problems of inaccurate screwing torque and insufficient tightening of the thread. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent rotary casing equipment hydraulic disassembly and assembly device, which adopts the method of first rotating and then tightening, thereby solving the problems raised in the above background technology.

[0005] The present invention is achieved through the following technical solutions:

[0006] An intelligent rotary casing equipment hydraulic disassembly and assembly device, comprising a frame, a screw-down mechanism, a fastening mechanism, a clamping mechanism and a hydraulic system;

[0007] The buckle mechanism and the clamping mechanism can be slidably mounted on the frame, and the buckle mechanism and the clamping mechanism can slide in the left and right directions on the frame. The fastening mechanism is fixedly mounted in the middle of the frame, and the buckle mechanism and the clamping mechanism are respectively located on the left and right sides of the fastening mechanism;

[0008] The screw-on mechanism cooperates with the fastening mechanism to clamp the two pipe shafts respectively, and the pipe shafts are screwed on by the screw-on mechanism;

[0009] The fastening mechanism cooperates with the clamping mechanism to clamp the two pipe shafts respectively, and the pipe shafts are fastened or punched by the fastening mechanism;

[0010] The hydraulic system is used to provide hydraulic power to the screw-down mechanism, the fastening mechanism and the clamping mechanism respectively so as to drive the screw-down mechanism, the fastening mechanism and the clamping mechanism to act respectively.

[0011] According to further definition, spur racks are installed on the frames on the left and right sides of the locking mechanism, and the locking mechanism includes a gantry, which is slidably arranged on the frame, and a traveling gear meshing with the spur rack and a first hydraulic motor for driving the traveling gear to rotate are rotatably installed on the gantry. By driving the traveling gear to rotate by the first hydraulic motor, the gantry can be moved on the frame along the extension direction of the spur rack, thereby realizing the sliding function of the locking mechanism on the frame.

[0012] According to a further definition, a spin button channel is formed on the inner side of the gantry for the pipe shaft to pass through, and two spin button wheel groups are symmetrically arranged on the front and rear sides of the spin button channel, and each spin button wheel group includes two spin button wheels spaced apart in an upper and lower direction, and the two spin button wheel groups can move synchronously in the front and rear directions to move closer to or away from each other to clamp the pipe shaft in the spin button channel or loosen it. Two first oil cylinders and two second hydraulic motors are installed on the gantry, and the two first oil cylinders are respectively used to drive the two spin button wheel groups to move, and the two second hydraulic motors correspond to the two spin button wheel groups one by one, and the second hydraulic motors are used to drive the two spin button wheels of the spin button wheel groups to rotate forward or backward synchronously; after the pipe shaft passes through the spin button channel, the hydraulic system drives the pistons of the two first oil cylinders to extend synchronously, so as to push the two spin button wheel groups to move closer to each other to clamp the pipe shaft, and when spinning, the hydraulic system drives the two second hydraulic motors to rotate forward or backward synchronously, so as to drive the four spin button wheels to rotate forward or backward synchronously to spin up or down the spin button.

[0013] Further definition, two lifting plates are symmetrically arranged on the front and rear sides of the gantry, the top of each lifting plate is connected to a guide vertical rod, and the top of the guide vertical rod passes through the gantry, the top of each guide vertical rod is equipped with a spring, and the top of each guide vertical rod is installed with a limit nut, the top and bottom of the spring are respectively abutted against the limit nut and the gantry, and the guide vertical rod can suspend the lifting plate, and the above structure can make the two lifting plates have a floating function of lifting and lowering in the vertical direction;

[0014] The two first oil cylinders are respectively installed on the two lifting plates, the outer ends of the pistons of the two first oil cylinders are both installed with wheel boxes, the two spin buckle wheel groups are respectively installed in the two wheel boxes, and the two second hydraulic motors are respectively installed on the left side walls of the two wheel boxes. Specifically, the two spin buckle wheels of the spin buckle wheel group are respectively rotatably installed in the wheel box through two rotating shafts, each rotating shaft is installed with a driven gear, and the output end of the second hydraulic motor is installed with a driving gear, and the two driven gears are meshed with the driving gear. When the second hydraulic motor rotates forward or reversely, it can drive the two driven gears to rotate synchronously through the driving gear, so as to drive the spin buckle wheel to spin;

[0015] A guide cross bar is installed between the top and bottom ends of the two wheel boxes. The front and rear ends of each guide cross bar are respectively fixed on the two lifting plates. When the piston of the first oil cylinder is extended or retracted, the wheel box can be driven to move in the front and rear directions. The two guide cross bars can be used to guide the movement of the wheel box to improve the stability of the wheel box, and can limit the torque when turning the buckle to prevent the wheel box from rotating, thereby improving the stability of the upper buckle and lower buckle of the four turnbuckle wheels;

[0016] When the two first oil cylinders drive the two wheel boxes to move closer to each other, the four spinner wheels can be used to clamp the pipe shaft. When the second hydraulic motor drives the spinner wheels to rotate, the pipe shaft can be turned up or down. The up and down floating function of the two lifting plates enables the two pipe shafts to be automatically centered.

[0017] According to further definition, the tightening mechanism includes a tightening channel for the pipe shaft to pass through, and 4 to 8 second oil cylinders are arranged on the outside of the tightening channel and are evenly distributed in a ring around the central axis thereof for clamping the pipe shaft. Two third oil cylinders are arranged on the front and rear sides of the tightening channel, and the two third oil cylinders are used to drive each second oil cylinder to rotate forward or reversely around the central axis of the tightening channel synchronously to tighten or punch the pipe shaft; after the pipe shaft passes through the tightening channel, the hydraulic system drives the pistons of each second oil cylinder to extend synchronously to clamp the pipe shaft, and when tightening or punching, the hydraulic system drives the two third oil cylinders to rotate forward or reversely synchronously, so as to drive each second oil cylinder to rotate forward or reversely around the central axis of the tightening channel synchronously to tighten or punch the pipe shaft, and the pistons of multiple second oil cylinders are extended to clamp the pipe shaft, and large-torque and low-speed tightening or punching can be achieved by the two third oil cylinders.

[0018] According to further definition, the clamping mechanism includes a clamping plate frame which is slidably arranged on the frame and spans the spur rack, and a traveling gear which meshes with the spur rack and a third hydraulic motor for driving the traveling gear to rotate are rotatably installed on the clamping plate frame. The traveling gear is driven to rotate by the third hydraulic motor, so that the clamping plate frame can move on the frame along the extension direction of the spur rack, thereby realizing the sliding function of the clamping mechanism on the frame.

[0019] According to further regulations, a clamping channel for the pipe shaft to pass through is formed on the inner side of the clamping plate frame, and 4 to 8 fourth oil cylinders for clamping the pipe shaft are arranged on the outer side of the clamping channel and are evenly distributed in a ring shape around the central axis thereof; after the pipe shaft passes through the clamping channel, the hydraulic system drives the pistons of each fourth oil cylinder to extend synchronously to clamp the pipe shaft, and the circumferential clamping of the pipe shaft can ensure the clamping of the pipe shaft and prevent the pipe shaft from rotating during tightening or punching.

[0020] According to further definition, two pulling mechanisms are slidably installed on the frame, and the two pulling mechanisms are respectively located on the left side of the screw-in mechanism and the right side of the clamping mechanism. The two pulling mechanisms are respectively used to clamp and push and pull two pipe shafts. During the screw-in process, the pulling mechanism on the left can clamp and push the pipe shaft clamped by the screw-in mechanism to ensure that the pipe shaft can move according to the screwing in or out of the buckle, and the pulling mechanism on the right can clamp and push the other pipe shaft to move.

[0021] Further definition, the two pulling mechanisms are of the same structure and are arranged opposite to each other on the frame. The pulling mechanism includes a pulley and a clamp both slidably arranged on the frame. The pulley is equipped with a fifth oil cylinder. The outer end of the piston of the fifth oil cylinder is fixed on the clamp. The fifth oil cylinder can push the clamp to move on the frame. The clamp is used to clamp the pipe shaft. A traveling gear meshing with a spur rack and a fourth hydraulic motor for driving the traveling gear to rotate are rotatably installed on the pulley. The traveling gear is driven to rotate by the fourth hydraulic motor, so that the pulley can move on the frame along the extension direction of the spur rack, thereby realizing the sliding function of the pulling mechanism on the frame.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The assembly and disassembly device can be used for the up-and-down fastening of two pipe shafts with threaded connection. When up-fastening, the fastening can be performed first and then tightened to ensure that the thread is tightened or reaches a specified torque, and to ensure that the two pipe shafts do not come off during use. When down-fastening, the fastening can be performed first and then the fastening can be performed. The thread between the two pipe shafts is tightened, and the torque required for loosening the fastening is relatively large. When the fastening mechanism is directly used for fastening, it cannot provide the torque required for loosening the fastening. Therefore, it is necessary to first use the tightening mechanism to loosen the fastening with a large torque, and the fastening mechanism can be used to continue to fasten and screw down the fastening after the thread is loosened. Using the assembly and disassembly device to disassemble and assemble the pipe shaft can solve the problem of inaccurate fastening torque of the existing fastening machine. Using the hydraulic intelligent control system, the up-fastening torque can be accurately calculated by pressure and structural dimensions to meet the precise requirements for the up-fastening torque, ensure that the thread is tightened, and solve the problem of automatic centering of the two pipe shafts with threaded connection in the up and down fastening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the buckle mechanism in the present invention;

[0027] Figure 3 It is a schematic diagram of the local explosion structure of the buckle mechanism in the present invention;

[0028] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the fastening mechanism in the present invention;

[0029] Figure 5It is a schematic diagram of a local explosion structure of the fastening mechanism in the present invention;

[0030] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the clamping mechanism in the present invention;

[0031] Figure 7 It is a schematic diagram of a partial explosion structure of the clamping mechanism in the present invention;

[0032] Figure 8 It is a schematic diagram of a partial three-dimensional structure of the drawing mechanism in the present invention;

[0033] Fig. 9 It is a schematic diagram of the local explosion structure of the drawing mechanism in the present invention.

[0034] The names of the components in the figure are: 1. Frame; 2. Spur rack; 3. Turnbuckle mechanism; 3.1. Gantry; 3.2. First gear box; 3.3. First hydraulic motor; 3.4. Lifting plate; 3.5. First oil cylinder; 3.6. Wheel box; 3.7. Second hydraulic motor; 3.8. Turnbuckle wheel; 3.9. Guide cross bar; 3.10. Spring; 3.11. Guide vertical bar; 4. Fastening mechanism; 4.1. First side plate; 4.2. First inner cylinder; 4.3. Connecting plate; 4.4. Second oil cylinder; 4.5. First Outer cylinder; 4.6, annular plate; 4.7, third oil cylinder; 5, clamping mechanism; 5.1, second side plate; 5.2, second inner cylinder; 5.3, second outer cylinder; 5.4, fourth oil cylinder; 5.5, wheel frame; 5.6, first roller; 5.7, second roller; 5.8, second gear box; 5.9, third hydraulic motor; 6, pulling mechanism; 6.1, pulley; 6.2, fifth oil cylinder; 6.3, third gear box; 6.4, fourth hydraulic motor; 6.5, clamp; 6.6, third roller; 7, clamping plate. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "front", "back", "left", "right", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] An intelligent hydraulic disassembly and assembly device for rotating casing equipment, such as Figure 1As shown, it includes a frame 1, a screwing mechanism 3, a fastening mechanism 4, a clamping mechanism 5, a pulling mechanism 6 and a hydraulic system;

[0038] The screw-on mechanism 3 and the clamping mechanism 5 can be slidably mounted on the frame 1, and the screw-on mechanism 3 and the clamping mechanism 5 can slide in the left and right directions on the frame 1. The fastening mechanism 4 is fixedly mounted in the middle of the frame 1, and the screw-on mechanism 3 and the clamping mechanism 5 are respectively located on the left and right sides of the fastening mechanism 4. The frame 1 on the left and right sides of the fastening mechanism 4 is equipped with a spur rack 2;

[0039] The screw-on mechanism 3 cooperates with the fastening mechanism 4 to clamp the two pipe shafts respectively, and screws the pipe shafts through the screw-on mechanism 3. Specifically, the screw-on mechanism includes an upper screw-on mechanism and a lower screw-on mechanism.

[0040] The fastening mechanism 4 cooperates with the clamping mechanism 5 to clamp the two pipe shafts respectively, and fastens or punches the pipe shafts through the fastening mechanism 4. Specifically, fastening means that after the upper screw is completed, in order to ensure that the threads are tightened or reach the specified torque, and to ensure that the two pipe shafts do not come off during use, it is necessary to increase the torque for tightening. Punching refers to the initial stage of lowering. Because the threads between the two pipe shafts are tightened, the torque required for loosening is relatively large. When the screw mechanism 3 is directly used for screwing, it cannot provide the torque required for loosening. Therefore, it is necessary to first use the fastening mechanism 4 to loosen the screw with a large torque. Only after the threads are loosened can the screw mechanism 3 be used to continue to screw down.

[0041] There are two pulling mechanisms 6, both of which can be slidably mounted on the frame 1 and are respectively located on the left side of the screw-fastening mechanism 3 and the right side of the clamping mechanism 5. The two pulling mechanisms 6 are respectively used to clamp and push and pull two pipe shafts. During the screw-fastening process, the pulling mechanism 6 on the left can clamp and push the pipe shaft clamped and screwed by the screw-fastening mechanism 3 to ensure that the pipe shaft can move according to the screwing in or screwing out of the buckle, and the pulling mechanism 6 on the right can clamp and push the other pipe shaft to move;

[0042] The hydraulic system is used to provide hydraulic power to the screw-down mechanism 3 , the fastening mechanism 4 and the clamping mechanism 5 respectively, so as to drive the screw-down mechanism 3 , the fastening mechanism 4 and the clamping mechanism 5 to move respectively.

[0043] In this embodiment, Figure 2 and Figure 3As shown, the rotary buckle mechanism 3 includes a gantry 3.1, which is slidably arranged on the frame 1. Specifically, the front side and the rear side of the frame 1 are both provided with slide grooves with openings facing each other, and the bottom front side wall and the bottom rear side wall of the gantry 3.1 are both equipped with pulleys that slide with the slide grooves, so as to guide the frame 1 to slide and ensure the stability of the gantry 3.1; a first gear box 3.2 is fixedly installed on the left side wall of the gantry 3.1, and the first gear box 3.2 is a box-shaped structure with an opening at the bottom, and a gear box 3.2 is rotatably installed inside the first gear box 3.2 to mesh with the spur rack 2 The bottom of the traveling gear extends from the bottom of the first gear box 3.2 to mesh with the spur rack 2. The front side wall of the first gear box 3.2 is installed with a first hydraulic motor 3.3 for driving the traveling gear to rotate. The first hydraulic motor 3.3 is connected to the hydraulic system. The hydraulic system provides hydraulic power to the first hydraulic motor 3.3 to make it rotate forward or reverse. The first hydraulic motor 3.3 drives the traveling gear to rotate, so that the gantry 3.1 can move on the frame 1 along the extension direction of the spur rack 2, thereby realizing the sliding function of the spin buckle mechanism 3 on the frame 1;

[0044] A spin button channel is formed on the inner side of the gantry 3.1 for the pipe shaft to pass through, and two spin button wheel groups are symmetrically arranged on the front and rear sides of the spin button channel, and each spin button wheel group includes two spin button wheels 3.8 arranged at an interval up and down, and the two spin button wheel groups can be synchronously moved in the front and rear directions to move closer to or away from each other to clamp the pipe shaft in the spin button channel or loosen it. Two first oil cylinders 3.5 and two second hydraulic motors 3.7 are installed on the gantry 3.1, and the two first oil cylinders 3.5 are respectively used to drive the two spin button wheel groups to move, and the two second hydraulic motors 3.7 correspond to the two spin button wheel groups one by one, and the second hydraulic motors 3.7 are used to drive the two spin button wheels 3.8 of the spin button wheel group to rotate forward or reverse synchronously;

[0045] Each first oil cylinder 3.5 and each second hydraulic motor 3.7 are connected to the hydraulic system through an oil pipeline. After the pipe shaft passes through the spindle channel, the hydraulic system drives the pistons of the two first oil cylinders 3.5 to extend synchronously, thereby pushing the two spindle wheel groups to move closer to each other to clamp the pipe shaft. When spinning, the hydraulic system drives the two second hydraulic motors 3.7 to rotate forward or backward synchronously, thereby driving the four spindle wheels 3.8 to rotate forward or backward synchronously to make an upper or lower spindle.

[0046] Two lifting plates 3.4 are symmetrically arranged on the front and rear sides of the gantry 3.1, and the top of each lifting plate 3.4 is connected to a guide vertical rod 3.11, and the top of the guide vertical rod 3.11 passes through the gantry 3.1, and the top of each guide vertical rod 3.11 is equipped with a spring 3.10, and the top of each guide vertical rod 3.11 is installed with a limit nut, and the top and bottom ends of the spring 3.10 are respectively abutted against the limit nut and the gantry 3.1, and the guide vertical rod 3.11 can suspend the lifting plate 3.4, and the above structure can make the two lifting plates 3.4 have a floating function of lifting and lowering in the vertical direction;

[0047] The two first oil cylinders 3.5 are respectively installed on the two lifting plates 3.4, the outer ends of the pistons of the two first oil cylinders 3.5 are respectively installed with wheel boxes 3.6, the two spin buckle wheel groups are respectively installed in the two wheel boxes 3.6, and the two second hydraulic motors 3.7 are respectively installed on the left side walls of the two wheel boxes 3.6. Specifically, the two spin buckle wheels 3.8 of the spin buckle wheel group are respectively rotatably installed in the wheel box 3.6 through two rotating shafts, and each rotating shaft is installed with a driven gear. The output end of the second hydraulic motor 3.7 is installed with a driving gear, and the two driven gears are meshed with the driving gear. When the second hydraulic motor 3.7 rotates forward or reversely, it can drive the two driven gears to rotate synchronously through the driving gear, thereby driving the spin buckle wheel 3.8 to rotate;

[0048] A guide cross bar 3.9 is installed between the top and bottom ends of the two wheel boxes 3.6. The front and rear ends of each guide cross bar 3.9 are respectively fixed on the two lifting plates 3.4. When the piston of the first oil cylinder 3.5 is extended or retracted, the wheel box 3.6 can be driven to move in the front and rear directions. The two guide cross bars 3.9 can be used to guide the movement of the wheel box 3.6, improve the stability of the wheel box 3.6, and limit the torque when turning the buckle to prevent the wheel box 3.6 from rotating, thereby improving the stability of the upper buckle and lower buckle of the four turn buckle wheels 3.8.

[0049] When the two first oil cylinders 3.5 drive the two wheel boxes 3.6 to move closer to each other, the four spindle wheels 3.8 can be used to clamp the pipe shaft, and the up and down floating function of the two lifting plates 3.4 can automatically align the two pipe shafts. When the second hydraulic motor 3.7 drives the spindle wheels 3.8 to rotate, the pipe shaft can be turned up or down. At the same time, the first hydraulic motor 3.3 can drive the gantry 3.1 to move on the frame 1 along the extension direction of the spur rack 2 to cooperate with the up or down buckle.

[0050] In this embodiment, Figure 4 and Figure 5As shown, the fastening mechanism 4 includes two first side plates 4.1 spaced apart from each other on the left and right sides, the bottom end of each first side plate 4.1 is fixed on the frame 1, the top of each first side plate 4.1 is provided with a through hole, a first inner cylinder 4.2 is provided between the two first side plates 4.1, the left and right ends of the first inner cylinder 4.2 are respectively installed in the two through holes, the first inner cylinder 4.2 can rotate relative to the first side plate 4.1, and the interior of the first inner cylinder 4.2 forms a fastening channel for the pipe axis to pass through;

[0051] The left and right ends of the first inner cylinder 4.2 are both fixed with coaxial annular plates 4.6, and the two annular plates 4.6 are located between the two first side plates 4.1. The outside of the first inner cylinder 4.2 is sleeved with a coaxial first outer cylinder 4.5, and the left and right ends of the first outer cylinder 4.5 are respectively fixed on the two annular plates 4.6, so that the first outer cylinder 4.5 and the first inner cylinder 4.2 can rotate synchronously. The outside of the first inner cylinder 4.2 is provided with six second oil cylinders 4.4 evenly distributed in an annular shape, and the second oil cylinders 4.4 are fixed on the first outer cylinder 4.5. The outer end of the piston of the second oil cylinder 4.4 penetrates the first inner cylinder 4.2 and extends into the first inner cylinder 4.2 and is fixed. A clamping plate 7 is fixed. When the pipe shaft is installed in the first inner cylinder 4.2, the pistons of the six second oil cylinders 4.4 extend so that the clamping plate 7 can clamp the pipe shaft. The outer wall of the first outer cylinder 4.5 is fixed with a connecting plate 4.3 symmetrical along the axis thereof. Two third oil cylinders 4.7 are arranged on the front and rear sides of the first outer cylinder 4.5. Each third oil cylinder 4.7 is hinged between the two first side plates 4.1. The outer ends of the pistons of the two third oil cylinders 4.7 are hinged to the two connecting plates 4.3 respectively. The synchronous extension or retraction of the pistons of the two third oil cylinders 4.7 can control the first outer cylinder 4.5 and the first inner cylinder 4.2 to rotate relative to the first side plate 4.1, so as to perform fastening or punching.

[0052] Each second oil cylinder 4.4 is connected to the hydraulic system through an oil pipeline, and a synchronization valve is arranged on the oil pipeline of each second oil cylinder 4.4 to ensure that the six second oil cylinders 4.4 act synchronously, especially when clamping the pipe shaft, the piston can be synchronously extended to clamp the pipe shaft so that the pipe shaft is automatically centered in the tightening channel; each third oil cylinder 4.7 is connected to the hydraulic system through an oil pipeline. After the pipe shaft passes through the tightening channel, the hydraulic system drives the pistons of each second oil cylinder 4.4 to extend synchronously, so that each clamping plate 7 clamps the pipe shaft from the circumference of the pipe shaft. When tightening or punching, the hydraulic system drives the two third oil cylinders 4.7 to rotate forward or backward synchronously, thereby driving the first outer cylinder 4.5 to rotate to drive each second oil cylinder 4.4 to rotate forward or backward synchronously around the central axis of the tightening channel to tighten or punch the pipe shaft. The pipe shaft can be clamped by using multiple second oil cylinders 4.4, and tightening or punching with large torque and low speed can be achieved by using two third oil cylinders 4.7.

[0053] In this embodiment, Figure 6 and Figure 7As shown, the clamping mechanism 5 includes a clamping plate frame slidably arranged on the frame 1 and spanning the spur rack 2, the clamping plate frame includes two second side plates 5.1 spaced apart on the left and right, and a second inner cylinder 5.2 and a second outer cylinder 5.3 arranged between the two second side plates 5.1; each second side plate 5.1 is provided with a through hole, the left and right ends of the second inner cylinder 5.2 are respectively installed and fixed in the two through holes, the left and right ends of the second outer cylinder 5.3 are respectively fixed on the two second side plates 5.1, and the inner side of the second inner cylinder 5.2 forms a clamping channel for the pipe axis to pass through; the outer side of the second inner cylinder 5.2 is provided with six fourth oil cylinders 5.4 evenly distributed in an annular shape, and the fourth oil cylinders 5.4 are fixed on the second outer cylinder 5.3, the outer end of the piston of the fourth oil cylinder 5.4 penetrates the second inner cylinder 5.2 and extends into the second inner cylinder 5.2 and is fixed with a clamping plate 7;

[0054] Each fourth oil cylinder 5.4 is connected to the hydraulic system through an oil pipeline, and a synchronization valve is arranged on the oil pipeline of each fourth oil cylinder 5.4 to ensure that the six fourth oil cylinders 5.4 act synchronously, especially when clamping the pipe shaft, the piston can be synchronously extended to clamp the pipe shaft so that the pipe shaft is automatically centered in the clamping channel; when the pipe shaft is inserted into the second inner cylinder 5.2, the hydraulic system drives the pistons of each fourth oil cylinder 5.4 to extend synchronously to clamp the pipe shaft, and clamp the pipe shaft around the circumference of the pipe shaft, which can ensure the clamping of the pipe shaft and avoid the rotation of the pipe shaft during buckling or punching;

[0055] A wheel frame 5.5 is provided between the front bottom and the rear bottom of the two second side plates 5.1, and two left-right symmetrical first rollers 5.6 are installed on each wheel frame 5.5. The four first rollers 5.6 on the two wheel frames 5.5 are used to limit torque from the front and rear sides of the frame 1 to prevent the clamping mechanism 5 from twisting during the buckling or punching process. Two front-back symmetrical second rollers 5.7 are installed on the outer side wall of the bottom end of each second side plate 5.1. The four second rollers 5.7 can be supported on the frame 1 to realize the vertical support of the clamping mechanism 5;

[0056] A second gear box 5.8 is installed on the outer side wall of the second side plate 5.1 on the right side. The second gear box 5.8 is a box-shaped structure with an opening at the bottom. A travel gear meshing with the spur rack 2 is rotatably installed inside the second gear box 5.8. The bottom of the travel gear extends from the bottom of the second gear box 5.8 to mesh with the spur rack 2. A third hydraulic motor 5.9 for driving the travel gear to rotate is installed on the rear side wall of the second gear box 5.8. The third hydraulic motor 5.9 is connected to the hydraulic system. The hydraulic system provides hydraulic power to the third hydraulic motor 5.9 to make it rotate forward or reverse. The third hydraulic motor 5.9 drives the travel gear to rotate, so that the clamping plate frame can move on the frame 1 along the extension direction of the spur rack 2, thereby realizing the sliding function of the clamping mechanism 5 on the frame 1.

[0057] When the pipe shaft is installed in the second inner tube 5.2, the pistons of the six fourth oil cylinders 5.4 extend to enable the clamping plate 7 to clamp the pipe shaft to ensure the stability of the pipe shaft during the tightening or punching process. The clamping mechanism 5 has the function of floating up and down in the vertical direction. After the tightening mechanism 4 clamps the pipe shaft, the two threaded pipe shafts are coaxial, so that the pipe shaft can force the clamping mechanism 5 to lift up, thereby realizing the coaxial alignment of the tightening mechanism 4 and the clamping mechanism 5.

[0058] In this embodiment, Figure 8 and Fig. 9 As shown, the two pulling mechanisms 6 are of the same structure and are arranged on the frame 1 in a left-right relative manner. The pulling mechanism 6 includes a pulley 6.1 and a clamp 6.5 both slidably arranged on the frame 1. Specifically, two L-shaped card plates symmetrically arranged front and back are installed at the bottom of the pulley 6.1 and the bottom of the clamp 6.5. The frame 1 is clamped by the two L-shaped card plates to limit the torsion. A plurality of third rollers 6.6 are installed on the bottom surface of the pulley 6.1 and the bottom surface of the clamp 6.5. The third rollers 6.6 can roll on the frame 1 and support it in the vertical direction; a fifth oil cylinder 6.2 is installed on the pulley 6.1, and the fifth oil cylinder 6.6 .2 is fixed on the clamp 6.5, and the fifth oil cylinder 6.2 can push the clamp 6.5 to move on the frame 1. The clamp 6.5 is used to clamp the pipe shaft. The third gear box 6.3 is installed at the bottom of the pulley 6.1. The internal rotation of the third gear box 6.3 is installed with a traveling gear meshing with the spur rack 2. The front side wall of the third gear box 6.3 is installed with a fourth hydraulic motor 6.4 for driving the traveling gear to rotate. The fourth hydraulic motor 6.4 can drive the traveling gear to rotate, and the pulley 6.1 can be moved on the frame 1 along the extension direction of the spur rack 2, thereby realizing the moving function of the drawing mechanism 6 on the frame 1.

[0059] The working principle of this embodiment is:

[0060] The disassembly and assembly device can be used for buckling up and buckling down between two pipe shafts connected by threads;

[0061] When buckling, the female joint of the pipe shaft is inserted into the clamping channel of the clamping mechanism 5 from the right side, and the other end of the pipe shaft is clamped on the right clamp 6.5. The hydraulic system controls the fourth hydraulic motor 6.4 to operate until the pulling mechanism 6 pushes the female joint of the pipe shaft into the buckling channel of the buckling mechanism 4, and the male joint of the other pipe shaft is inserted into the buckling channel of the buckling mechanism 3 from the left side. The other end of the pipe shaft is clamped on the left clamp 6.5, and the male joints and female joints of the two pipe shafts are buckled. The hydraulic system drives the six second oil cylinders 4.4 to operate synchronously to extend their pistons, and the clamps 7 at the outer ends of the pistons of the six second oil cylinders 4.4 clamp and fix the pipe shaft. The hydraulic system drives the two first oil cylinders 3.5 to move synchronously to extend their pistons, so that the front and rear two spinner wheel groups clamp the pipe shaft. Based on the floating function of the two lifting plates 3.4 that can be lifted and lowered in the vertical direction, the two spinner wheel groups can be lifted and lowered in the vertical direction to adapt to the pipe shaft alignment. The hydraulic system drives the two second hydraulic motors 3.7 to move synchronously to drive the four spinner wheels 3.8 to rotate for buckling. At the same time, the hydraulic system drives the spinner mechanism 3 and the left pulling mechanism 6 to move rightward on the frame 1 to ensure that the pipe shaft is pushed to move with the screwing of the male joint.

[0062] After the initial buckle is applied, the clamping of the two pipe shafts is released, the two pipe shafts are moved, the male joint of the pipe shaft is moved into the fastening channel, and the female joint of the other pipe shaft is moved into the clamping channel. The hydraulic system drives the pistons of the six second oil cylinders 4.4 and the six fourth oil cylinders 5.4 to extend to clamp and fix the two pipe shafts. The hydraulic system drives the pistons of the two third oil cylinders 4.7 to retract to drive the first inner tube 4.2 to rotate to achieve a first fastening. Then the six second oil cylinders 4.4 are driven to release the clamping of the pipe shafts, the pistons of the two third oil cylinders 4.7 are controlled to extend, and then the six second oil cylinders 4.4 are controlled to clamp and fix the pipe shafts. Then the pistons of the two third oil cylinders 4.7 are driven to retract to achieve a second fastening. The above fastening operation is repeated until the second oil cylinders 4.4 are in a clamped state and cannot be rotated under the set pressure, thereby completing the fastening operation of the two pipe shafts.

[0063] When buckling, the two pipe shafts connected together by threads are inserted into the fastening channel and the clamping channel, and the buckling is performed with reference to the above-mentioned fastening operation, except that, when buckling, the first inner tube 4.2 and the six second oil cylinders 4.4 rotate in the loosening direction; after the buckling is completed, the two pipe shafts are moved, and the two pipe shafts are clamped respectively by the screw mechanism 3 and the fastening mechanism 4, and the pipe shafts are buckled down by the screw mechanism 3. The operation of buckling down is referred to the above-mentioned buckling operation, except that, when buckling down, the four screw wheels 3.8 rotate in the loosening direction;

[0064] The disassembly and assembly device is used to disassemble and assemble the pipe shaft, which can solve the problem of inaccurate make-up torque of the existing screwing machine. The hydraulic intelligent control system is used to accurately calculate the make-up torque through pressure and structural dimensions to meet the precise requirements for the make-up torque. It can ensure that the thread is tightened and solve the problem of automatic centering of the two pipe shafts with threaded connections in the upper and lower make-up processes.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An intelligent rotary casing equipment hydraulic disassembly and assembly device, comprising a frame (1) and a hydraulic system, characterized in that: It also includes a screw-fastening mechanism (3), a fastening mechanism (4) and a clamping mechanism (5); The rotating buckle mechanism (3) and the clamping mechanism (5) can be slidably mounted on the frame (1); the rotating buckle mechanism (3) and the clamping mechanism (5) can slide on the frame (1) in the left-right direction; the fastening mechanism (4) is fixedly mounted on the middle part of the frame (1); the rotating buckle mechanism (3) and the clamping mechanism (5) are respectively located on the left and right sides of the fastening mechanism (4); The screw-on mechanism (3) cooperates with the fastening mechanism (4) to clamp the two pipe shafts respectively, and the pipe shafts are screwed on by the screw-on mechanism (3); The fastening mechanism (4) cooperates with the clamping mechanism (5) to clamp the two pipe shafts respectively, and the pipe shafts are fastened or punched by the fastening mechanism (4); The hydraulic system is used to provide hydraulic power to the screw-down mechanism (3), the fastening mechanism (4) and the clamping mechanism (5) respectively, so as to drive the screw-down mechanism (3), the fastening mechanism (4) and the clamping mechanism (5) to move respectively.

2. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 1 is characterized in that: Spur racks (2) are installed on the frames (1) on the left and right sides of the fastening mechanism (4).

3. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 2 is characterized in that: The turnbuckle mechanism (3) comprises a gantry (3.1) which is slidably arranged on the frame (1), and a travel gear meshing with the spur rack (2) and a first hydraulic motor (3.3) for driving the travel gear to rotate are rotatably mounted on the gantry (3.1).

4. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 3 is characterized in that: A spindle channel through which the pipe shaft can pass is formed on the inner side of the gantry (3.1), and two spindle wheel groups are symmetrically arranged on the front and rear sides of the spindle channel, each spindle wheel group includes two spindle wheels (3.8) arranged at an interval up and down, and the two spindle wheel groups can move synchronously in the front and rear directions to move closer to or away from each other. Two first oil cylinders (3.5) and two second hydraulic motors (3.7) are installed on the gantry (3.1), the two first oil cylinders (3.5) are respectively used to drive the two spindle wheel groups to move, the two second hydraulic motors (3.7) correspond to the two spindle wheel groups one by one, and the second hydraulic motors (3.7) are used to drive the two spindle wheels (3.8) of the spindle wheel group to rotate forward or backward synchronously.

5. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 4 is characterized in that: Two lifting plates (3.4) are symmetrically arranged on the front and rear sides of the gantry (3.1); the top of each lifting plate (3.4) is connected to a guide vertical rod (3.11), and the top of the guide vertical rod (3.11) passes through the gantry (3.1); the top of each guide vertical rod (3.11) is equipped with a spring (3.10); the top of each guide vertical rod (3.11) is equipped with a limit nut; the top and bottom of the spring (3.10) are respectively in contact with the limit nut and the gantry (3.1); The two first oil cylinders (3.5) are respectively mounted on the two lifting plates (3.4); the outer ends of the pistons of the two first oil cylinders (3.5) are both mounted with wheel boxes (3.6); the two spindle wheel assemblies are respectively mounted in the two wheel boxes (3.6); and the two second hydraulic motors (3.7) are respectively mounted on the left side walls of the two wheel boxes (3.6); A guide cross bar (3.9) is installed between the top ends and the bottom ends of the two wheel boxes (3.6), and the front and rear ends of each guide cross bar (3.9) are respectively fixed on the two lifting plates (3.4).

6. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 2 is characterized in that: The clamping mechanism (4) comprises a clamping channel through which the pipe shaft can pass, and 4 to 8 second oil cylinders (4.4) are arranged on the outside of the clamping channel and are evenly distributed in a ring shape around the central axis thereof for clamping the pipe shaft, and two third oil cylinders (4.7) are arranged on the front and rear sides of the clamping channel, and the two third oil cylinders (4.7) are used to drive the second oil cylinders (4.4) to rotate synchronously forward or reversely around the central axis of the clamping channel to clamp or punch the pipe shaft.

7. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 2 is characterized in that: The clamping mechanism (5) comprises a clamping plate frame which is slidably arranged on the frame (1) and spans the spur rack (2); a travel gear meshing with the spur rack (2) is rotatably mounted on the clamping plate frame, and a third hydraulic motor (5.9) is mounted on the clamping plate frame for driving the travel gear to rotate.

8. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 7 is characterized in that: A clamping channel for the pipe shaft to pass through is formed on the inner side of the clamping plate frame, and 4 to 8 fourth oil cylinders (5.4) for clamping the pipe shaft are arranged on the outer side of the clamping channel and are evenly distributed in a ring shape around the central axis.

9. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 2 is characterized in that: Two pulling mechanisms (6) are slidably mounted on the frame (1), the two pulling mechanisms (6) are respectively located on the left side of the screw-on mechanism (3) and on the right side of the clamping mechanism (5), and the two pulling mechanisms (6) are respectively used to clamp and push and pull the two pipe shafts.

10. The intelligent rotary casing equipment hydraulic disassembly and assembly device according to claim 9, characterized in that: The two pulling mechanisms (6) are of the same structure and are arranged on the frame (1) in a left-right opposite manner. The pulling mechanism (6) comprises a pulley (6.1) and a clamp (6.5) both of which are slidably arranged on the frame (1). A fifth oil cylinder (6.2) is installed on the pulley (6.1). The outer end of the piston of the fifth oil cylinder (6.2) is fixed on the clamp (6.5). The clamp (6.5) is used to clamp the pipe shaft. A travel gear meshing with the spur rack (2) is rotatably installed on the pulley (6.1) and a fourth hydraulic motor (6.4) for driving the travel gear to rotate is installed.

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