Casing head drilling and polishing device for petroleum wellhead

Abstract

The invention discloses a casing head drilling and polishing device for a petroleum wellhead, and relates to the technical field of combined machining equipment.The casing head drilling and polishing device comprises a machining platform and a control device arranged on the machining platform, a fixing block is fixedly arranged on the machining platform, a driving groove is formed in the fixing block, and a rotating part is arranged on the fixing block; a clamping mechanism is arranged on the rotating part, a bearing part is arranged on the machining platform, a position adjusting mechanism is arranged on the bearing part, and a combined machining mechanism is arranged on the position adjusting mechanism. The combined machining mechanism is arranged, so that the device can adjust the distance between the two mounting sleeves so as to enable the distance between the axes of the two mounting sleeves to be matched with the distance between two symmetrical to-be-drilled positions on the end face of the sleeve head pipe, and subsequent combined machining of the end face of the sleeve head pipe is facilitated; the combined machining efficiency of the device on the end face of the sleeve head pipe is improved, the combined machining flexibility of the device is also improved, and meanwhile the combined machining efficiency of the device is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of combined processing equipment, in particular to a casing head drilling and grinding device for a petroleum wellhead. Background Art

[0002] In the oil and gas industry, casing heads are critical wellhead equipment. Their quality and performance are directly related to the wellhead's sealing, safety, and stability of oil and gas production operations. Casing heads require extremely high machining precision, especially the drilling and polishing processes on the pipe end faces, which directly impact the connection and sealing performance between the casing head and other wellhead equipment. Precise drilling and polishing ensure a reliable connection after installation, preventing oil and gas leaks and ensuring smooth oil and gas production operations.

[0003] However, the devices currently available on the market for drilling and grinding oil wellhead casing heads have significant drawbacks. Existing processing equipment typically utilizes a fixed structure, making it impossible to flexibly adjust the distance between the two processing components. On the end face of a casing head, two symmetrical holes often need to be machined to meet connection requirements. However, due to the varying distances between the two drilled holes on the end faces of casing heads of varying specifications, existing equipment is difficult to adapt to a wide range of casing head specifications. This results in frequent equipment changes or adjustments to processing parameters when machining different casing heads, significantly reducing processing efficiency. Furthermore, existing devices are relatively limited in functionality, with the drilling and grinding processes typically performed by separate devices or fixed components, preventing the flexible switching of drill and grinding heads based on actual processing needs. During the machining process, operators must first complete the drilling operation using the drilling equipment and then switch to the grinding equipment for grinding. This step-by-step approach is not only time-consuming but also increases equipment commissioning and manual operation costs. Furthermore, this step-by-step process is prone to cumulative machining errors, impacting the final machining accuracy of the casing head, thus urgently requiring improvement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a casing head drilling and grinding device for an oil wellhead, aiming to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A casing head drilling and grinding device for an oil wellhead includes a processing platform and a control device arranged on the processing platform, a feed groove is provided on the processing platform, a material trough is provided on the processing platform, a fixed block is fixedly provided on the processing platform, a drive groove is provided in the fixed block, a rotating part is provided on the fixed block, a clamping mechanism for clamping the casing head to be processed is provided on the rotating part, a bearing part is provided on the processing platform, a positioning mechanism is provided on the bearing part, and a combined processing mechanism for processing the casing head is provided on the positioning mechanism.

[0006] Preferably, the rotating part includes: A motor support block, fixedly arranged on the fixed block; A first motor is provided on the motor support block, wherein a driving gear is fixedly provided at an output end of the first motor; The rotating shaft is rotatably arranged on the fixed block, and one end of the rotating shaft extending into the driving groove is fixedly provided with a driven gear, the driven gear is meshed with the driving gear, and the diameter of the driven gear is larger than the diameter of the driving gear.

[0007] Preferably, the clamping mechanism comprises: A bearing shaft is fixedly arranged on the end of the rotating shaft away from the driving groove, and a sleeve plate is fixedly arranged on the bearing shaft; A clamping table is fixedly arranged at one end of the bearing shaft away from the driving groove, and a plurality of uniform clamping grooves are opened on the surface of the clamping table close to the combined processing mechanism; A clamping portion, provided on the clamping platform, for clamping the casing head to be processed; A power unit is provided on the sleeve plate, and is used to provide power for the clamping unit to clamp the casing head; The arc-shaped protective cover is fixedly arranged on the clamping platform, and the arc-shaped protective cover is used to protect the clamping part.

[0008] Preferably, the clamping portion comprises: There are multiple clamping screws, and each of the multiple clamping screws is rotatably arranged on the clamping platform, one end of each of the multiple clamping screws extends into the clamping groove respectively, and a clamping gear is fixedly arranged on one end of the clamping screw away from the axis of the clamping platform; There are multiple clamping plates, and the multiple clamping plates are respectively slidably arranged in adjacent clamping grooves, and the clamping plates are threadedly connected to the clamping screw; The gear ring is rotatably arranged on the clamping platform, and the surface of the gear ring close to the clamping gear is provided with a tooth group meshing with the clamping gear.

[0009] Preferably, the power unit includes: A second motor is fixedly mounted on the sleeve plate and electrically connected to the control device; A power shaft is rotatably mounted on the sleeve plate, and one end of the power shaft close to the second motor is fixedly connected to an output end of the second motor; The power gear is fixedly arranged on one end of the power shaft away from the fixed block. The power gear is meshed with the gear ring, and the diameter of the power gear is smaller than the diameter of the gear ring.

[0010] Preferably, the bearing portion includes: A carrying platform is slidably arranged on the processing platform, the carrying platform is slidably connected to the feed groove, and an arc groove is formed on the surface of the carrying platform away from the processing platform; An electric cylinder is fixedly arranged in the feed trough and electrically connected to the control device. The electric cylinder is used to push the supporting platform to move.

[0011] Preferably, the positioning mechanism includes: A bearing column, slidably disposed in the arc-shaped groove; a third motor, fixedly mounted on the carrier platform and electrically connected to the control device; an adjusting plate, one end of which is fixedly disposed on the output end of the third motor, and the other end of which is rotatably connected to the bearing column; A vertical block is fixedly arranged at one end of the supporting column away from the processing platform, and a lifting slot is provided on the vertical block; The positioning part is arranged on the vertical block and is used for positioning the combined processing mechanism during processing.

[0012] Preferably, the positioning portion includes: A lifting block is slidably disposed in the lifting slot, and a first built-in slot is formed on the lifting block; a hydraulic telescopic shaft, located in the lifting slot and electrically connected to the control device, the hydraulic telescopic shaft being used to push the lifting block to slide in the lifting slot; An electric push rod is located in the first built-in groove and is electrically connected to the control device. The electric push rod is used to push the combined processing mechanism to move toward the clamped casing head.

[0013] Preferably, the combined processing mechanism includes: A fixed frame is fixedly arranged on the electric push rod, and a distance adjustment slot is opened on the fixed frame; There are two sliding blocks, and the two sliding blocks are slidably arranged in the distance adjustment groove. The two sliding blocks are symmetrically arranged in the distance adjustment groove, and a second built-in groove is opened on the surface of the sliding block away from the vertical block; a fourth motor fixedly disposed in the second built-in slot and electrically connected to the control device, wherein an output end of the fourth motor is fixedly provided with a mounting sleeve, one mounting sleeve being detachably fixedly connected to a drill bit, and the other mounting sleeve being detachably fixedly connected to a grinding head; The distance adjusting portion is arranged on the fixing frame and is used to adjust the distance between the two sliding blocks.

[0014] Preferably, the distance adjusting portion includes: a pitch-adjusting motor, disposed on the fixed frame and electrically connected to the control device; A double-headed screw is located in the pitch-adjusting groove, and one end of the double-headed screw close to the pitch-adjusting motor is fixedly connected to the output end of the pitch-adjusting motor. The double-headed screw is threadedly connected to the sliding block, and the threads on both sides of the double-headed screw rotate in opposite directions.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. By providing a combined processing mechanism, the device can adjust the distance between the two mounting sleeves so that the distance between the axes of the two mounting sleeves is adapted to the distance between two symmetrical positions to be drilled on the end face of the sleeve tube, thereby facilitating the subsequent combined processing mechanism to synchronously perform combined processing of drilling and grinding on the end face of the sleeve tube, thereby improving the combined processing efficiency of the device on the end face of the sleeve tube. At the same time, the device can install drill bits or grinding heads on the two mounting sleeves according to actual processing requirements, thereby improving the combined processing flexibility of the device while also improving the combined processing efficiency of the device.

[0016] 2. The device is provided with a rotating part, so that the position of the hole to be drilled on the surface of the casing head can be changed without moving the drill bit. Therefore, after completing a drilling operation on the surface of the casing pipe, the device only needs to rotate the casing pipe by a certain angle to drill the next area to be drilled on the surface of the casing pipe, without the need to reposition the drill bit for drilling, thereby improving the drilling efficiency of the device to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The present invention shows a three-dimensional structural schematic diagram of a casing head drilling and grinding device used in an oil wellhead.

[0019] Figure 2The present invention shows a front view of a casing head drilling and grinding device used for an oil wellhead.

[0020] Figure 3 The invention shows a right side view of a casing head drilling and grinding device used for an oil wellhead.

[0021] Figure 4 Shown Figure 3 Cross-sectional view of AA in the figure.

[0022] Figure 5 A top view of a casing head drilling and grinding device for an oil wellhead is shown.

[0023] Figure 6 The present invention shows a partial structural schematic diagram of a casing head drilling and grinding device used in an oil wellhead.

[0024] Figure 7 It shows a structural schematic diagram of the bearing part, the positioning mechanism and the combined processing mechanism.

[0025] Figure 8 Shown Figure 7 Exploded view of the middle part of the structure.

[0026] Figure 9 Shown Figure 8 Schematic diagram of the middle part structure.

[0027] Legend: 1. Processing platform; 2. Control device; 3. Feed trough; 4. Material trough; 5. Fixed block; 6. Drive trough; 7. Motor support block; 8. First motor; 9. Driving gear; 10. Rotating shaft; 11. Driven gear; 12. Load-bearing shaft; 13. Bushing; 14. Clamping platform; 15. Clamping trough; 16. Arc-shaped protective cover; 17. Clamping screw; 18. Clamping gear; 19. Clamping plate; 20. Gear ring; 21. Gear set; 22. Second motor; 23. Power shaft; 24. Power Gear; 25. Carrying platform; 26. Arc groove; 27. Electric cylinder; 28. Carrying column; 29. ​​Third motor; 30. Adjusting plate; 31. Vertical block; 32. Lifting groove; 33. Lifting block; 34. First built-in groove; 35. Hydraulic telescopic shaft; 36. Electric push rod; 37. Fixed frame; 38. Distance adjustment groove; 39. Sliding block; 40. Second built-in groove; 41. Fourth motor; 42. Mounting sleeve; 43. Drill bit; 44. Grinding head; 45. Distance adjustment motor; 46. Double-headed screw. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0032] Reference Figures 1 to 9 An embodiment of a casing head drilling and grinding device for a petroleum wellhead according to the present invention is further described.

[0033] A casing head drilling and grinding device for an oil wellhead includes a processing platform 1 and a control device 2 disposed on the processing platform 1. The processing platform 1 is provided with a feed trough 3, a material trough 4, a fixed block 5 is fixedly provided on the processing platform 1, a drive slot 6 is provided in the fixed block 5, and a rotating part is provided on the fixed block 5. The rotating part includes: The motor support block 7 is fixedly arranged on the fixing block 5; A first motor 8 is provided on the motor support block 7 , and a driving gear 9 is fixedly provided at the output end of the first motor 8 ; The rotating shaft 10 is rotatably arranged on the fixed block 5, and a driven gear 11 is fixedly arranged on one end of the rotating shaft 10 extending into the driving slot 6. The driven gear 11 is engaged with the driving gear 9, and the diameter of the driven gear 11 is larger than the diameter of the driving gear 9.

[0034] When the drill bit 43 completes a drilling process, the drill bit 43 is withdrawn from the casing tube, and then the casing tube is rotated to change the position of the hole to be drilled on the casing tube surface. Specifically, the control device 2 controls the first motor 8 to start, so that the driving gear 9 fixedly connected to the output end of the first motor 8 rotates, and the driving gear 9 is engaged with the driven gear 11, thereby driving the rotating shaft 10 fixedly connected to the driven gear 11 to rotate, thereby rotating the load-bearing shaft 12 fixedly connected to the rotating shaft 10, and then rotating the clamping platform 14 fixedly connected to the load-bearing shaft 12, thereby rotating the clamping plate 19 provided on the clamping platform 14 around the axis of the load-bearing shaft 12, thereby causing the casing tube clamped and fixed by the clamping plate 19 to rotate a certain angle, thereby changing the position of the hole to be drilled on the casing tube surface; The device is provided with a rotating part, so that the position of the hole to be drilled on the surface of the casing head can be changed without moving the drill bit 43. Therefore, after completing a drilling operation on the surface of the casing tube, the device only needs to rotate the casing tube by a certain angle to drill the next area to be drilled on the surface of the casing tube, without the need to reposition the drill bit 43 for drilling, thereby improving the processing efficiency of the drill bit 43 of the device to a certain extent.

[0035] The rotating part is provided with a clamping mechanism for clamping the casing head to be processed, and the clamping mechanism includes: A bearing shaft 12 is fixedly provided on the end of the rotating shaft 10 away from the driving slot 6 , and a sleeve plate 13 is fixedly provided on the bearing shaft 12 ; A clamping platform 14 is fixedly arranged at the end of the bearing shaft 12 away from the driving groove 6, and a plurality of uniform clamping grooves 15 are opened on the surface of the clamping platform 14 close to the combined processing mechanism; The clamping part is provided on the clamping platform 14 and is used to clamp the casing head to be processed. The clamping part includes: There are multiple clamping screws 17, and each of the clamping screws 17 is rotatably mounted on the clamping platform 14. One end of each of the clamping screws 17 extends into the clamping groove 15, and a clamping gear 18 is fixedly mounted on one end of the clamping screw 17 away from the axis of the clamping platform 14. There are multiple clamping plates 19, and the multiple clamping plates 19 are respectively slidably disposed in adjacent clamping grooves 15, and the clamping plates 19 are threadedly connected to the clamping screws 17; The gear ring 20 is rotatably mounted on the clamping platform 14 . A tooth set 21 meshing with the clamping gear 18 is disposed on a surface of the gear ring 20 close to the clamping gear 18 .

[0036] The power unit is provided on the sleeve plate 13 and is used to provide power for the clamping unit to clamp the casing head. The power unit includes: The second motor 22 is fixedly mounted on the sleeve 13 and electrically connected to the control device 2; A power shaft 23 is rotatably mounted on the sleeve plate 13 , and one end of the power shaft 23 close to the second motor 22 is fixedly connected to the output end of the second motor 22 ; The power gear 24 is fixedly disposed on an end of the power shaft 23 away from the fixed block 5 . The power gear 24 is engaged with the gear ring 20 , and the diameter of the power gear 24 is smaller than that of the gear ring 20 .

[0037] The arc-shaped protective cover 16 is fixedly disposed on the clamping platform 14 and is used to protect the clamping portion.

[0038] During operation, one end of the casing head to be processed is placed between the clamping plates 19, and the casing head is kept coaxial with the clamping platform 14. Then, the control device 2 is used to control the second motor 22 to start, so that the power shaft 23 fixedly connected to the output end of the second motor 22 rotates, driving the power gear 24 fixedly connected to the power shaft 23 to rotate, and the gear ring 20 is rotated by the engagement between the power gear 24 and the gear ring 20. The gear ring 20 is rotated by the engagement between the tooth group 21 on the gear ring 20 and the clamping gear 18, so that each clamping gear 18 is rotated, driving each clamping screw 17 fixedly connected to each clamping gear 18 to rotate, and through the threaded transmission cooperation between each clamping screw 17 and each clamping plate 19, each clamping plate 19 is synchronously moved toward the surface of the casing head to be processed until each clamping plate 19 is in contact with the surface of the casing head and exerts corresponding pressure thereon, thereby clamping and fixing the casing head to be processed; The device is provided with a clamping mechanism, so that the device can clamp and fix the casing head to be processed, so that when the subsequent combined processing mechanism performs combined processing on the casing head to be processed, the casing head being processed can be stably clamped, thereby ensuring the accuracy of the combined processing.

[0039] The processing platform 1 is provided with a bearing portion, and the bearing portion includes: A carrying platform 25 is slidably disposed on the processing platform 1. The carrying platform 25 is slidably connected to the feed trough 3. An arc-shaped groove 26 is formed on the surface of the carrying platform 25 away from the processing platform 1. The electric cylinder 27 is fixedly disposed in the feed trough 3 and electrically connected to the control device 2 . The electric cylinder 27 is used to push the supporting platform 25 to move.

[0040] The bearing portion is provided with a positioning mechanism, and the positioning mechanism includes: The supporting column 28 is slidably disposed in the arc-shaped groove 26; A third motor 29 is fixedly mounted on the carrier 25 and electrically connected to the control device 2; An adjustment plate 30 , one end of which is fixedly disposed on the output end of the third motor 29 , and the other end of which is rotatably connected to the supporting column 28 ; A vertical block 31 is fixedly mounted on the end of the supporting column 28 away from the processing platform 1, and a lifting slot 32 is formed on the vertical block 31; A positioning portion is provided on the vertical block 31 and is used for positioning the combined processing mechanism. The positioning portion includes: A lifting block 33 is slidably disposed in the lifting slot 32 , and a first built-in slot 34 is formed on the lifting block 33 ; A hydraulic telescopic shaft 35 is located in the lifting groove 32 and is electrically connected to the control device 2. The hydraulic telescopic shaft 35 is used to push the lifting block 33 to slide in the lifting groove 32; The electric push rod 36 is located in the first built-in groove 34 and is electrically connected to the control device 2. The electric push rod 36 is used to push the combined processing mechanism to move toward the clamped casing head.

[0041] After the casing head is clamped and fixed, the position of the combined processing mechanism is adjusted according to the drilling position of the casing head. Specifically, when the surface of the casing head needs to be drilled, the third motor 29 is controlled to start by the control device 2, so that the adjustment plate 30 fixedly connected to the output end of the third motor 29 rotates around the output end of the third motor 29, thereby driving the supporting column 28 rotatably connected to the adjustment plate 30 to slide in the arc groove 26 until the supporting column 28 slides to the end of the arc groove 26 close to the clamping mechanism, so that the vertical block 31 set on the supporting column 28 follows the rotation of the supporting column 28 around the axis of the arc groove 26, so that the positioning portion set on the vertical block 31 drives The combined processing mechanism rotates around the axis of the arc groove 26 so that the combined processing mechanism is facing the surface of the casing head to be processed; when the surface processing of the casing head is completed and the end face of the casing head needs to be processed again, the third motor 29 is controlled by the control device 2 to reverse, and the transmission cooperation between the above components causes the supporting column 28 to slide to the end of the arc groove 26 away from the clamping mechanism, thereby causing the vertical block 31 provided on the supporting column 28 to follow the rotation of the supporting column 28 around the axis of the arc groove 26, so that the positioning portion provided on the vertical block 31 drives the combined processing mechanism to rotate around the axis of the arc groove 26, so that the combined processing mechanism is facing the end face of the casing head to be processed; The device is provided with a positioning mechanism, so that the device can adjust the position of the combined processing mechanism according to the actual processing position of the casing head, thereby eliminating the need for workers to disassemble and assemble the casing head from the clamping mechanism back and forth, thereby improving the combined processing efficiency of the casing head by the device to a certain extent.

[0042] When the combined processing mechanism is adjusted to face the surface of the sleeve tube to be processed, the control device 2 controls the hydraulic telescopic shaft 35 to start, so that the hydraulic telescopic shaft 35 pushes the lifting block 33 to move up and down in the lifting groove 32, driving the electric push rod 36 set in the first built-in groove 34 to move up and down, thereby causing the combined processing mechanism set on the electric push rod 36 to move up and down until the drill bit 43 in the combined processing mechanism is lifted and down to the same height as the hole to be drilled on the sleeve head surface, and then the control device 2 controls the electric cylinder 27 to start, so that the electric cylinder 27 pushes the supporting platform 25 to move, thereby driving the positioning mechanism set on the supporting platform 25 to move with the supporting platform 25, and then the positioning mechanism drives the combined processing mechanism to move with the supporting platform 25 until the drill bit 43 in the combined processing mechanism is facing the area to be drilled on the sleeve tube surface, thereby completing the positioning operation of the drill bit 43 before drilling.

[0043] The positioning mechanism is provided with a combined processing mechanism for processing the casing head, and the combined processing mechanism includes: A fixed frame 37 is fixedly mounted on the electric push rod 36 , and a distance adjustment slot 38 is formed on the fixed frame 37 ; There are two sliding blocks 39, and the two sliding blocks 39 are slidably set in the distance adjustment groove 38. The two sliding blocks 39 are symmetrically arranged in the distance adjustment groove 38. The surface of the sliding block 39 away from the vertical block 31 is provided with a second built-in groove 40; A fourth motor 41 is fixedly disposed in the second built-in slot 40 and electrically connected to the control device 2. A mounting sleeve 42 is fixedly disposed at the output end of the fourth motor 41. A drill bit 43 is detachably fixedly connected to one mounting sleeve 42, and a grinding head 44 is detachably fixedly connected to the other mounting sleeve 42. After the positioning operation of the drill bit 43 is completed, the fourth motor 41 near the side of the drill bit 43 is controlled by the control device 2 to start, so that the mounting sleeve 42 fixedly connected to the output end of the fourth motor 41 rotates, thereby driving the drill bit 43 detachably fixed to the mounting sleeve 42 to rotate, and then the control device 2 controls the electric push rod 36 to start, so that the electric push rod 36 drives the fixed frame 37 to move in the direction of the sleeve tube, thereby causing the sliding block 39 provided in the fixed frame 37 to move in the direction of the sleeve tube, thereby driving the fourth motor 41 provided in the second built-in groove 40 to move in the direction of the sleeve tube, thereby causing the drill bit 43 detachably fixedly connected to the mounting sleeve 42 to move in the direction of the sleeve tube until the drill bit 43 completes the drilling of the sleeve tube; after all the areas on the surface of the sleeve tube to be drilled by the drill bit 43 are drilled, the drill bit 43 is removed and the grinding head 44 is installed on the mounting sleeve 42, and the above drilling operations are repeated to complete the grinding of the hole drilled on the surface of the sleeve tube.

[0044] The distance adjusting portion is provided on the fixed frame 37 and is used to adjust the distance between the two sliding blocks 39. The distance adjusting portion includes: The pitch-adjusting motor 45 is provided on the fixing frame 37 and is electrically connected to the control device 2; The double-headed screw 46 is located in the pitch-adjusting groove 38, and one end of the double-headed screw 46 close to the pitch-adjusting motor 45 is fixedly connected to the output end of the pitch-adjusting motor 45. The double-headed screw 46 is threadedly connected to the sliding block 39, and the threads on both sides of the double-headed screw 46 have opposite rotation directions.

[0045] After the combined processing of drilling and grinding the surface of the sleeve tube is completed, the combined processing mechanism is rotated to be opposite to the end face of the sleeve tube, and then the axis of the electric push rod 36 is raised and lowered to coincide with the axis of the sleeve tube, and then the distance between the two sliding blocks 39 in the combined processing mechanism is adjusted by the distance adjusting portion. The specific process is as follows: the distance adjusting motor 45 is controlled to start by the control device 2, so that the double-headed screw 46 fixedly connected to the output end of the distance adjusting motor 45 rotates, and the two sliding blocks 39 are driven to move closer to or away from each other through the threaded transmission between the double-headed screw 46 and the two sliding blocks 39 until the distance between the axes of the mounting sleeves 42 on the two sliding blocks 39 is equal to the distance between the axes of the two holes to be drilled symmetrically on the end face of the sleeve tube; After the distance between the two mounting sleeves 42 is adjusted, the drill bit 43 is first installed on any mounting sleeve 42, and then the above-mentioned drilling operation is repeated to drill holes in the position to be drilled on the end face of the sleeve tube, until the drill bit 43 completes drilling of half a circle of the end face of the sleeve tube, and then the grinding head 44 is installed on the other mounting sleeve 42, and then the control device 2 controls the two fourth motors 41 to start, so that the drill bits 43 and the grinding heads 44 installed on the two mounting sleeves 42 are rotated by the rotating part, and then the sleeve tube is rotated by a corresponding angle until the axis of any drilled hole on the end face of the sleeve tube coincides with the axis of the grinding head 44. At this time, the axis of the drill bit 43 is also facing the position of the undrilled hole on the end face of the sleeve tube, and then the control device 2 controls the electric push rod 36 to start, so that the electric push rod 36 pushes the fixed frame 37 to move toward the end face of the sleeve tube, and then the two sliding blocks 39 arranged in the fixed frame 37 move synchronously toward the end face of the sleeve tube, and then the drill bit 43 and the grinding head 44 move synchronously toward the end face of the sleeve tube, so that the grinding head 44 grinds the drilled hole and the drill bit 43 also drills the position on the end face of the sleeve tube to be drilled, and cooperates with the rotating part to synchronously complete the combined processing of drilling and grinding the end face of the sleeve tube.

[0046] The device is provided with a distance adjustment part, so that the device can adjust the distance between the two mounting sleeves 42 so that the distance between the axes of the two mounting sleeves 42 is adapted to the distance between two symmetrical positions to be drilled on the end face of the sleeve tube, thereby facilitating the subsequent combined processing mechanism to synchronously perform combined processing of drilling and grinding on the end face of the sleeve tube, so as to improve the combined processing efficiency of the sleeve tube end face by the device; by providing a combined processing mechanism, the device can install a drill bit 43 or a grinding head 44 on the two mounting sleeves 42 according to actual processing requirements, thereby improving the combined processing flexibility of the device and also improving the combined processing efficiency of the device.

[0047] Working principle: During operation, one end of the casing head to be processed is placed between the clamping plates 19, and the casing head is kept coaxial with the clamping platform 14, and then the second motor 22 is controlled to start by the control device 2, so that the power shaft 23 fixedly connected to the output end of the second motor 22 rotates, driving the power gear 24 fixedly connected to the power shaft 23 to rotate, and the gear ring 20 is rotated by the engagement between the power gear 24 and the gear ring 20, and the gear ring 20 is rotated by the engagement between the tooth group 21 on the gear ring 20 and the clamping gear 18, so that each clamping gear 18 is rotated, driving each clamping screw 17 fixedly connected to each clamping gear 18 to rotate, and through the threaded transmission cooperation between each clamping screw 17 and each clamping plate 19, each clamping plate 19 is synchronously moved toward the surface of the casing head to be processed until each clamping plate 19 is in contact with the surface of the casing head and exerts corresponding pressure thereon, thereby clamping and fixing the casing head to be processed; After the casing head is clamped and fixed, the position of the combined processing mechanism is adjusted according to the drilling position of the casing head. Specifically, when the surface of the casing head needs to be drilled, the third motor 29 is controlled to start by the control device 2, so that the adjustment plate 30 fixedly connected to the output end of the third motor 29 rotates around the output end of the third motor 29, thereby driving the supporting column 28 rotatably connected to the adjustment plate 30 to slide in the arc groove 26 until the supporting column 28 slides to the end of the arc groove 26 close to the clamping mechanism, so that the vertical block 31 set on the supporting column 28 follows the rotation of the supporting column 28 around the axis of the arc groove 26, so that the positioning portion set on the vertical block 31 drives The combined processing mechanism rotates around the axis of the arc groove 26 so that the combined processing mechanism is facing the surface of the casing head to be processed; when the surface processing of the casing head is completed and the end face of the casing head needs to be processed again, the third motor 29 is controlled by the control device 2 to reverse, and the transmission cooperation between the above components causes the supporting column 28 to slide to the end of the arc groove 26 away from the clamping mechanism, thereby causing the vertical block 31 provided on the supporting column 28 to follow the rotation of the supporting column 28 around the axis of the arc groove 26, so that the positioning portion provided on the vertical block 31 drives the combined processing mechanism to rotate around the axis of the arc groove 26, so that the combined processing mechanism is facing the end face of the casing head to be processed; When the combined processing mechanism is adjusted to face the surface of the casing head to be processed, the control device 2 controls the hydraulic telescopic shaft 35 to start, so that the hydraulic telescopic shaft 35 pushes the lifting block 33 to move up and down in the lifting slot 32, driving the electric push rod 36 set in the first built-in slot 34 to move up and down, thereby causing the combined processing mechanism set on the electric push rod 36 to move up and down until the drill bit 43 in the combined processing mechanism is lifted and down to the same height as the casing head surface to be drilled, and then the control device 2 controls the electric cylinder 27 to start, so that the electric cylinder 27 pushes the supporting platform 25 to move, thereby driving the adjusting mechanism set on the supporting platform 25 to move with the supporting platform 25, and then the adjusting mechanism drives the combined processing mechanism to move with the supporting platform 25 until the drill bit 43 in the combined processing mechanism faces the area on the casing head surface to be drilled, thereby completing the positioning operation of the drill bit 43 before drilling; After the positioning operation of the drill bit 43 is completed, the control device 2 is used to control the fourth motor 41 near the side of the drill bit 43 to start, so that the mounting sleeve 42 fixedly connected to the output end of the fourth motor 41 rotates, thereby driving the drill bit 43 detachably fixedly connected to the mounting sleeve 42 to rotate, and then the control device 2 is used to control the electric push rod 36 to start, so that the electric push rod 36 drives the fixed frame 37 to move in the direction of the sleeve tube, thereby causing the sliding block 39 provided in the fixed frame 37 to move in the direction of the sleeve tube, thereby driving the fourth motor 41 provided in the second built-in groove 40 to move in the direction of the sleeve tube, thereby causing the drill bit 43 detachably fixedly connected to the mounting sleeve 42 to move in the direction of the sleeve tube, until the drill bit 43 completes the drilling of the sleeve tube; When the drill bit 43 completes a drilling process, the drill bit 43 is withdrawn from the casing tube, and then the casing tube is rotated to change the position of the hole to be drilled on the casing tube surface. Specifically, the control device 2 controls the first motor 8 to start, so that the driving gear 9 fixedly connected to the output end of the first motor 8 rotates, and the driving gear 9 is engaged with the driven gear 11, thereby driving the rotating shaft 10 fixedly connected to the driven gear 11 to rotate, thereby rotating the load-bearing shaft 12 fixedly connected to the rotating shaft 10, and then rotating the clamping platform 14 fixedly connected to the load-bearing shaft 12, thereby rotating the clamping plate 19 provided on the clamping platform 14 around the axis of the load-bearing shaft 12, thereby causing the casing tube clamped and fixed by the clamping plate 19 to rotate a certain angle, thereby changing the position of the hole to be drilled on the casing tube surface; After all the holes on the surface of the sleeve tube to be drilled by the drill bit 43 are drilled, the drill bit 43 is removed and the grinding head 44 is mounted on the mounting sleeve 42. The above drilling operation is repeated to complete the grinding of the holes drilled on the surface of the sleeve tube. After the combined processing of drilling and grinding the surface of the sleeve tube is completed, the combined processing mechanism is rotated to be opposite to the end face of the sleeve tube, and then the axis of the electric push rod 36 is raised and lowered to coincide with the axis of the sleeve tube, and then the distance between the two sliding blocks 39 in the combined processing mechanism is adjusted by the distance adjusting portion. The specific process is as follows: the distance adjusting motor 45 is controlled to start by the control device 2, so that the double-headed screw 46 fixedly connected to the output end of the distance adjusting motor 45 rotates, and the two sliding blocks 39 are driven to move closer to or away from each other through the threaded transmission between the double-headed screw 46 and the two sliding blocks 39 until the distance between the axes of the mounting sleeves 42 on the two sliding blocks 39 is equal to the distance between the axes of the two holes to be drilled symmetrically on the end face of the sleeve tube; After the distance between the two mounting sleeves 42 is adjusted, the drill bit 43 is first installed on any mounting sleeve 42, and then the above-mentioned drilling operation is repeated to drill holes in the position to be drilled on the end face of the sleeve tube, until the drill bit 43 completes drilling of half a circle of the end face of the sleeve tube, and then the grinding head 44 is installed on the other mounting sleeve 42, and then the control device 2 controls the two fourth motors 41 to start, so that the drill bits 43 and the grinding heads 44 installed on the two mounting sleeves 42 are rotated by the rotating part, and then the sleeve tube is rotated by a corresponding angle until the axis of any drilled hole on the end face of the sleeve tube coincides with the axis of the grinding head 44. At this time, the axis of the drill bit 43 is also facing the position of the undrilled hole on the end face of the sleeve tube, and then the control device 2 controls the electric push rod 36 to start, so that the electric push rod 36 pushes the fixed frame 37 to move toward the end face of the sleeve tube, and then the two sliding blocks 39 arranged in the fixed frame 37 move synchronously toward the end face of the sleeve tube, and then the drill bit 43 and the grinding head 44 move synchronously toward the end face of the sleeve tube, so that the grinding head 44 grinds the drilled hole and the drill bit 43 also drills the position on the end face of the sleeve tube to be drilled, and cooperates with the rotating part to synchronously complete the combined processing of drilling and grinding the end face of the sleeve tube.

[0048] The above description of the embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A casing head drilling and grinding device for an oil wellhead, comprising a processing platform (1) and a control device (2) arranged on the processing platform (1), wherein the processing platform (1) is provided with a feed trough (3), and the processing platform (1) is provided with a material trough (4), characterized in that: A fixed block (5) is fixedly provided on the processing platform (1), a driving groove (6) is provided in the fixed block (5), a rotating portion is provided on the fixed block (5), a clamping mechanism for clamping a casing head to be processed is provided on the rotating portion, a bearing portion is provided on the bearing portion, and a positioning mechanism is provided on the positioning mechanism, and a combined processing mechanism for processing the casing head is provided on the positioning mechanism.

2. The casing head drilling and grinding device for a petroleum wellhead according to claim 1, characterized in that: The rotating part includes: A motor support block (7) is fixedly mounted on the fixed block (5); A first motor (8) is arranged on the motor support block (7), and a driving gear (9) is fixedly arranged at the output end of the first motor (8); A rotating shaft (10) is rotatably mounted on the fixed block (5), and a driven gear (11) is fixedly mounted on one end of the rotating shaft (10) that extends into the driving slot (6). The driven gear (11) is meshed with the driving gear (9), and the diameter of the driven gear (11) is larger than the diameter of the driving gear (9).

3. The casing head drilling and grinding device for a petroleum wellhead according to claim 2, characterized in that: The clamping mechanism comprises: A bearing shaft (12) is fixedly arranged on an end of the rotating shaft (10) away from the driving groove (6), and a sleeve plate (13) is fixedly arranged on the bearing shaft (12); A clamping table (14) is fixedly arranged at one end of the bearing shaft (12) away from the driving groove (6), and a plurality of uniform clamping grooves (15) are formed on a surface of the clamping table (14) close to the combined processing mechanism; A clamping portion, provided on the clamping platform (14), the clamping portion being used to clamp the casing head to be processed; A power unit is provided on the sleeve plate (13), and is used to provide power for the clamping unit to clamp the sleeve head; An arc-shaped protective cover (16) is fixedly arranged on the clamping platform (14), and the arc-shaped protective cover (16) is used to protect the clamping portion.

4. The casing head drilling and grinding device for a petroleum wellhead according to claim 3, characterized in that: The clamping portion comprises: There are multiple clamping screws (17), and the multiple clamping screws (17) are all rotatably arranged on the clamping platform (14), one end of the multiple clamping screws (17) respectively extends into the clamping groove (15), and a clamping gear (18) is fixedly arranged on one end of the clamping screw (17) away from the axis of the clamping platform (14); There are multiple clamping plates (19), and the multiple clamping plates (19) are respectively slidably arranged in adjacent clamping grooves (15), and the clamping plates (19) are threadedly connected to the clamping screw (17); A gear ring (20) is rotatably mounted on the clamping platform (14), and a tooth group (21) meshing with the clamping gear (18) is provided on a surface of the gear ring (20) close to the clamping gear (18).

5. The casing head drilling and grinding device for a petroleum wellhead according to claim 4, characterized in that: The power unit includes: A second motor (22) is fixedly mounted on the sleeve plate (13) and electrically connected to the control device (2); A power shaft (23) is rotatably mounted on the sleeve plate (13), and one end of the power shaft (23) close to the second motor (22) is fixedly connected to the output end of the second motor (22); A power gear (24) is fixedly arranged on one end of the power shaft (23) away from the fixed block (5), the power gear (24) is meshed with the gear ring (20), and the diameter of the power gear (24) is smaller than the diameter of the gear ring (20).

6. The casing head drilling and grinding device for a petroleum wellhead according to claim 5, characterized in that: The bearing portion includes: A bearing platform (25) is slidably arranged on the processing platform (1), the bearing platform (25) is slidably connected to the feed groove (3), and an arc groove (26) is formed on the surface of the bearing platform (25) away from the processing platform (1); An electric cylinder (27) is fixedly disposed in the feed trough (3) and electrically connected to the control device (2). The electric cylinder (27) is used to push the supporting platform (25) to move.

7. The casing head drilling and grinding device for a petroleum wellhead according to claim 6, characterized in that: The positioning mechanism includes: A bearing column (28) is slidably disposed in the arc-shaped groove (26); a third motor (29) fixedly mounted on the carrier platform (25) and electrically connected to the control device (2); A positioning plate (30), one end of which is fixedly disposed on the output end of the third motor (29), and the other end of which is rotatably connected to the bearing column (28); A vertical block (31) is fixedly arranged at one end of the supporting column (28) away from the processing platform (1), and a lifting slot (32) is provided on the vertical block (31); A positioning portion is provided on the vertical block (31), and the positioning portion is used for positioning the combined processing mechanism for processing.

8. The casing head drilling and grinding device for a petroleum wellhead according to claim 7, characterized in that: The positioning portion includes: A lifting block (33) is slidably disposed in the lifting slot (32), and a first built-in slot (34) is formed on the lifting block (33); A hydraulic telescopic shaft (35) is located in the lifting groove (32) and is electrically connected to the control device (2), and the hydraulic telescopic shaft (35) is used to push the lifting block (33) to slide in the lifting groove (32); An electric push rod (36) is located in the first built-in groove (34) and is electrically connected to the control device (2). The electric push rod (36) is used to push the combined processing mechanism to move toward the clamped casing head.

9. The casing head drilling and grinding device for a petroleum wellhead according to claim 8, characterized in that: The combined processing mechanism comprises: A fixed frame (37) is fixedly mounted on the electric push rod (36), and a distance adjustment slot (38) is provided on the fixed frame (37); There are two sliding blocks (39), and the two sliding blocks (39) are slidably arranged in the distance adjustment groove (38). The two sliding blocks (39) are symmetrically arranged in the distance adjustment groove (38), and a second built-in groove (40) is opened on the surface of the sliding block (39) away from the vertical block (31); a fourth motor (41) fixedly disposed in the second built-in slot (40) and electrically connected to the control device (2); an output end of the fourth motor (41) is fixedly provided with a mounting sleeve (42), one mounting sleeve (42) being detachably fixedly connected to a drill bit (43), and the other mounting sleeve (42) being detachably fixedly connected to a grinding head (44); A distance adjusting portion is provided on the fixed frame (37), and the distance adjusting portion is used to adjust the distance between the two sliding blocks (39).

10. The casing head drilling and grinding device for a petroleum wellhead according to claim 9, characterized in that: The distance adjusting portion comprises: A pitch-adjusting motor (45) is disposed on the fixed frame (37) and is electrically connected to the control device (2); A double-headed screw (46) is located in the pitch-adjusting groove (38), and one end of the double-headed screw (46) close to the pitch-adjusting motor (45) is fixedly connected to the output end of the pitch-adjusting motor (45). The double-headed screw (46) is threadedly connected to the sliding block (39), and the threads on both sides of the double-headed screw (46) rotate in opposite directions.

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