A processing and positioning fixture for a marine riser

Abstract

The utility model belongs to the technical field of casing positioning device especially relates to a water -resistant casing processing positioning clamp, including base: the upper surface of base is provided with water -resistant casing, the outer surface of base is fixedly connected with bottom plate, the cooperation between screw plate, connecting plate, outer pressure plate and inner pressure plate, through motor drive two outer pressure plates are close to each other, can carry out the clamping fixed surface of water -resistant casing, when needing to process the outer surface of water -resistant casing, rotates inner pressure plate, with two inner pressure plates in the inside of water -resistant casing, through motor drive two inner pressure plates are far from each other, to its fixed, solved the positioning clamp of current generally from the outer surface of water -resistant casing with its fixed, lead to when processing its outer surface, because the clamping surface of contact of clamp and casing is not processed, therefore needs to frequently change clamping surface only can all -round processing of casing.

Description

Technical Field

[0001] This utility model belongs to the technical field of sleeve positioning devices, and particularly relates to a positioning fixture for processing water-proof sleeves. Background Technology

[0002] Riser casing is a large-size protective casing and support structure used in offshore oil engineering to descend from an offshore drilling platform to the shallow seabed. It is mainly used for: isolating seawater and establishing a safe drilling passage; bearing the static and dynamic loads of the platform and equipment; and serving as a closed circulation channel for cementing and drilling fluid. Before the riser casing is put into use, it needs to be cut to length, flanged, threaded, and coated for protection.

[0003] When processing a water-proof sleeve, it is necessary to process its outer surface and inner wall. However, existing positioning fixtures generally fix the water-proof sleeve from its outer surface. As a result, when processing its outer surface, the clamping surface in contact with the sleeve cannot be processed. Therefore, it is necessary to frequently change the clamping surface to process the sleeve from all angles. In view of this, we propose a positioning fixture for processing water-proof sleeves. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for processing water-proof sleeves, so as to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a positioning fixture for processing a water-proof sleeve, including a base: a water-proof sleeve is provided on the upper surface of the base, a base plate is fixedly connected to the outer surface of the base, a motor is fixedly installed on the outer surface of the base plate, a rotating rod is fixedly connected to the output shaft end of the motor, a threaded rod is fixedly connected to one end of the rotating rod, and a threaded plate is threadedly connected to the outer surface of the threaded rod.

[0006] A vertical plate is fixedly connected to the upper surface of the threaded plate. An adjusting plate is slidably connected inside the vertical plate. A connecting plate is fixedly connected to the outer surface of the adjusting plate. An outer pressure plate is installed on the outer surface of the connecting plate. The outer surface of the outer pressure plate can press against the outer surface of the water-proof sleeve. A disc is rotatably connected to the outer surface of the connecting plate. An inner pressure plate is fixedly connected to the outer surface of the disc. The outer surface of the inner pressure plate can press against the inner wall of the water-proof sleeve.

[0007] In this technical solution, the fixture achieves high-precision positioning of the water-proof sleeve by combining internal and external bidirectional clamping mechanisms with multi-stage adjustment, meeting the requirement that the fixture position does not need to be changed during drilling, welding, coating and other processing.

[0008] In the above technical solution, a groove is further provided on the upper surface of the base plate, and the outer surface of the threaded plate is slidably connected to the inner wall of the groove.

[0009] In this technical solution, the motor is started, and the rotating rod drives the threaded rod to rotate, so that the two sets of threaded plates move towards each other along the slide groove, and the vertical plate pushes the outer pressure plate to contact the outer wall of the sleeve.

[0010] In the above technical solution, the vertical plate has a vertical groove inside, and the outer surface of the adjusting plate is slidably connected to the inner wall of the vertical groove.

[0011] In this technical solution, lubricating oil is applied to the inner wall of the vertical groove, which reduces the friction between the vertical groove and the adjusting plate, making it easier for the adjusting plate to move.

[0012] In the above technical solution, further, the adjusting plate is internally threaded with a screw rod, the bottom end of the screw rod is rotatably connected to a rotating cylinder, and the bottom end of the rotating cylinder is fixedly connected to the upper surface of the threaded plate.

[0013] In this technical solution, the rotating screw drives the adjusting plate to rise and fall along the vertical groove, so that the outer pressure plate is aligned with the middle area of ​​the sleeve.

[0014] In the above technical solution, further, a rotating plate is fixedly connected to the bottom end of the screw, and the outer surface of the rotating plate is rotatably connected to the inside of the rotating drum.

[0015] In this technical solution, the screw drives the adjusting plate to move up and down, which allows the device to fix water-proof sleeves of different diameters.

[0016] In the above technical solution, the outer surface of the connecting plate is further threaded with a threaded cylinder, and the outer surface of the threaded cylinder is fixedly connected to the outer surface of the outer pressure plate.

[0017] In this technical solution, the threaded cylinder facilitates the disassembly of the outer pressure plate, making it easy to replace the outer pressure plate.

[0018] In the above technical solution, further, a stepped column is fixedly connected to the outer surface of the connecting plate, and the outer surface of the stepped column is rotatably connected to the inside of the disk.

[0019] In this technical solution, after rotating the inner pressure plate, no positioning device is required. The two inner pressure plates are driven by a motor to move closer to each other, so that they squeeze the inner wall of the water-proof sleeve.

[0020] The beneficial effects of this utility model are:

[0021] 1. This positioning fixture for the water-proof sleeve, through the cooperation of a threaded plate, a vertical plate, an outer pressure plate, and an inner pressure plate, allows for the following: When machining the inner wall of the water-proof sleeve, the two outer pressure plates are brought closer together by a motor to clamp and fix the outer surface of the water-proof sleeve. When machining the outer surface of the water-proof sleeve, the inner pressure plate is rotated, placing the two inner pressure plates inside the water-proof sleeve. The motor then moves the two inner pressure plates away from each other, fixing the sleeve and allowing machining of its outer surface. This solves the problem that existing positioning fixtures typically fix the water-proof sleeve from its outer surface, resulting in the inability to machine the outer surface due to the clamping surface being in contact with the sleeve, thus requiring frequent changes of the clamping surface to achieve full-range machining of the sleeve.

[0022] 2. This positioning fixture for processing water-tight sleeves, through the cooperation between the motor, threaded rod, outer pressure plate, screw, and rotating drum, allows the two outer pressure plates or two inner pressure plates to move closer or further apart when the motor is used. Combined with rotating the screw to adjust the up and down position of the adjusting plate, the outer pressure plate or inner pressure plate can be positioned in the middle of the water-tight sleeve to be processed, thus making it suitable for water-tight sleeves of different diameters. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0025] Figure 3 In this utility model Figure 2 Enlarged view of the structure of section A in the middle;

[0026] Figure 4 In this utility model Figure 2 Enlarged view of the structure of section B in the middle;

[0027] Figure 5 In this utility model Figure 2 Enlarged view of the structure of section C.

[0028] The markings in the diagram are as follows:

[0029] 1. Base; 2. Waterproof sleeve; 3. Base plate; 4. Motor; 5. Rotating rod; 6. Threaded rod; 7. Threaded plate; 8. Vertical plate; 9. Adjusting plate; 10. Connecting plate; 11. Outer pressure plate; 12. Disc; 13. Inner pressure plate; 14. Slide groove; 15. Vertical groove; 16. Screw; 17. Rotary drum; 18. Rotating plate; 19. Threaded cylinder; 20. Stepped column. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-5This application will be described in further detail.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Example 1: This example provides a positioning fixture for processing a water-proof sleeve, including a base 1: a water-proof sleeve 2 is provided on the upper surface of the base 1, a base plate 3 is fixedly connected to the outer surface of the base 1, a motor 4 is fixedly installed on the outer surface of the base plate 3, a rotating rod 5 is fixedly connected to the output shaft end of the motor 4, a threaded rod 6 is fixedly connected to one end of the rotating rod 5, and a threaded plate 7 is threadedly connected to the outer surface of the threaded rod 6.

[0033] A vertical plate 8 is fixedly connected to the upper surface of the threaded plate 7. An adjusting plate 9 is slidably connected inside the vertical plate 8. A connecting plate 10 is fixedly connected to the outer surface of the adjusting plate 9. An outer pressure plate 11 is installed on the outer surface of the connecting plate 10. The outer surface of the outer pressure plate 11 can press against the outer surface of the water-proof sleeve 2. A disc 12 is rotatably connected to the outer surface of the connecting plate 10. An inner pressure plate 13 is fixedly connected to the outer surface of the disc 12. The outer surface of the inner pressure plate 13 can press against the inner wall of the water-proof sleeve 2.

[0034] When the inner wall of the water-proof sleeve 2 needs to be processed, the two outer pressure plates 11 are driven by the motor 4 to move closer to each other, which can clamp and fix the outer surface of the water-proof sleeve 2. When the outer surface of the water-proof sleeve 2 needs to be processed, the inner pressure plate 13 is rotated to place the two inner pressure plates 13 inside the water-proof sleeve 2. The two inner pressure plates 13 are moved away from each other by the drive of the motor 4, so that the outer surface can be processed.

[0035] Example 2: This example provides a positioning fixture for processing water-proof sleeves. In addition to the technical solutions of the above examples, it also has the following technical features: a groove 14 is provided on the upper surface of the base plate 3, and the outer surface of the threaded plate 7 is slidably connected to the inner wall of the groove 14.

[0036] The slide groove 14 is convex, and the bottom surface of the threaded plate 7 is embedded in the interior of the slide groove 14. When the threaded plate 7 slides, it will not detach from the slide groove 14, and it can only move horizontally along the direction of the slide groove 14.

[0037] Example 3: This example provides a positioning fixture for processing water-proof sleeves. In addition to the technical solutions of the above examples, it also has the following technical features: the vertical plate 8 has a vertical groove 15 inside, and the outer surface of the adjusting plate 9 is slidably connected to the inner wall of the vertical groove 15.

[0038] The vertical plate 8 is embedded in the middle of the vertical groove 15, so that the vertical plate 8 can only slide up and down along the inner wall of the vertical groove 15.

[0039] Example 4: This example provides a positioning fixture for processing water-proof sleeves. In addition to the technical solutions of the above examples, it also has the following technical features: the internal thread of the adjusting plate 9 is connected to a screw 16, the bottom end of the screw 16 is rotatably connected to a rotating cylinder 17, and the bottom end of the rotating cylinder 17 is fixedly connected to the upper surface of the threaded plate 7.

[0040] The upper and lower positions of the adjusting plate 9 can be adjusted by rotating the screw 16, so that the outer pressure plate 11 or the inner pressure plate 13 is located in the middle position of the water-proof sleeve 2 to be processed, thus making it suitable for water-proof sleeves 2 of different diameters.

[0041] Example 5: This example provides a positioning fixture for processing water-proof sleeves. In addition to the technical solutions of the above examples, it also has the following technical features: the bottom end of the screw 16 is fixedly connected to a rotating plate 18, and the outer surface of the rotating plate 18 is rotatably connected to the inside of the rotating cylinder 17.

[0042] When the screw 16 is rotated, its bottom end drives the rotating plate 18 to rotate inside the rotating drum 17, so that the position of the screw 16 remains unchanged and the adjusting plate 9 on its outer surface moves up and down.

[0043] Example 6: This example provides a positioning fixture for processing a water-proof sleeve. In addition to the technical solutions of the above examples, it also has the following technical features: the outer surface of the connecting plate 10 is threadedly connected to a threaded cylinder 19, and the outer surface of the threaded cylinder 19 is fixedly connected to the outer surface of the outer pressure plate 11.

[0044] Among them, a rod that is threadedly connected to the threaded cylinder 19 is fixedly connected to the outer surface of the connecting plate 10. By rotating the threaded cylinder 19, the outer pressure plate 11 can be unscrewed.

[0045] Example 7: This example provides a positioning fixture for processing water-proof sleeves. In addition to the technical solutions of the above examples, it also has the following technical features: a stepped column 20 is fixedly connected to the outer surface of the connecting plate 10, and the outer surface of the stepped column 20 is rotatably connected to the inside of the disc 12.

[0046] One end of the stepped column 20 is embedded inside the disc 12, which allows the disc 12 to rotate, thereby changing the position of the inner pressure plate 13 and placing it inside the water-proof sleeve 2. When the inner pressure plate 13 is not in use, it can be placed naturally vertically without hindering the use of the outer pressure plate 11.

[0047] Working principle: When using this device, place the water-proof sleeve 2 in the recess on the upper surface of the base 1. First, adjust the height of the adjusting plate 9 according to the size of the water-proof sleeve 2. Rotate the screw 16, and the rotating plate 18 at the bottom of the screw 16 rotates inside the rotating cylinder 17, causing the adjusting plate 9 to slide up and down on the inner wall of the vertical groove 15, so that the outer pressure plate 11 is directly opposite the middle of the water-proof sleeve 2. Start the motor 4, and the output shaft of the motor 4 drives the threaded rod 6 to rotate through the rotating rod 5. The threaded rod 6 drives the two threaded plates 7 to move closer together. The outer surface of the water-proof sleeve 2 can be clamped and fixed. When the outer surface of the water-proof sleeve 2 needs to be processed, the inner pressure plate 13 is rotated and the water-proof sleeve 2 is moved back and forth slightly. The two inner pressure plates 13 are located inside the water-proof sleeve 2. The two inner pressure plates 13 are moved away from each other by the drive of the motor 4, and their inner walls are clamped and fixed. The outer surface can then be processed. This device can achieve the following: when processing the outer surface, the inner wall fixing method is adopted, and when processing the inner wall, the outer surface fixing method is adopted.

[0048] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A positioning fixture for machining a water-proof sleeve, characterized in that, Includes a base (1): a water-proof sleeve (2) is provided on the upper surface of the base (1), a base plate (3) is fixedly connected to the outer surface of the base (1), a motor (4) is fixedly installed on the outer surface of the base plate (3), a rotating rod (5) is fixedly connected to the output shaft end of the motor (4), a threaded rod (6) is fixedly connected to one end of the rotating rod (5), and a threaded plate (7) is threadedly connected to the outer surface of the threaded rod (6); A vertical plate (8) is fixedly connected to the upper surface of the threaded plate (7). An adjusting plate (9) is slidably connected inside the vertical plate (8). A connecting plate (10) is fixedly connected to the outer surface of the adjusting plate (9). An outer pressure plate (11) is installed on the outer surface of the connecting plate (10). The outer surface of the outer pressure plate (11) can be pressed against the outer surface of the water-proof sleeve (2). A disc (12) is rotatably connected to the outer surface of the connecting plate (10). An inner pressure plate (13) is fixedly connected to the outer surface of the disc (12). The outer surface of the inner pressure plate (13) can be pressed against the inner wall of the water-proof sleeve (2).

2. The positioning fixture for processing a water-tight sleeve according to claim 1, characterized in that, The upper surface of the base plate (3) is provided with a sliding groove (14), and the outer surface of the threaded plate (7) is slidably connected to the inner wall of the sliding groove (14).

3. The positioning fixture for processing a water-tight sleeve according to claim 1, characterized in that, The vertical plate (8) has a vertical groove (15) inside, and the outer surface of the adjusting plate (9) is slidably connected to the inner wall of the vertical groove (15).

4. The positioning fixture for processing a water-tight sleeve according to claim 1, characterized in that, The adjusting plate (9) is internally threaded with a screw (16), and the bottom end of the screw (16) is rotatably connected to a rotating cylinder (17). The bottom end of the rotating cylinder (17) is fixedly connected to the upper surface of the threaded plate (7).

5. A positioning fixture for processing a water-tight sleeve according to claim 4, characterized in that, The bottom end of the screw (16) is fixedly connected to a rotating plate (18), and the outer surface of the rotating plate (18) is rotatably connected to the inside of the rotating cylinder (17).

6. The positioning fixture for processing a water-tight sleeve according to claim 1, characterized in that, The outer surface of the connecting plate (10) is threadedly connected to a threaded cylinder (19), and the outer surface of the threaded cylinder (19) is fixedly connected to the outer surface of the outer pressure plate (11).

7. A positioning fixture for processing a water-tight sleeve according to claim 1, characterized in that, The outer surface of the connecting plate (10) is fixedly connected to a stepped column (20), and the outer surface of the stepped column (20) is rotatably connected to the inside of the disc (12).

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