Large-pipe-diameter pipe assembly centering device

Abstract

The utility model relates to the technical field of construction of ocean engineering blocks, modules and jackets, in particular to a large-pipe-diameter pipe assembly centering device which comprises a horizontal ruler arranged on a pipe, supporting legs are rotationally installed at the two ends of the horizontal ruler, the horizontal ruler comprises a main ruler and auxiliary rulers installed on the two sides of the main ruler in a sliding mode, and the overall length of the horizontal ruler can be changed. The auxiliary rulers are arranged on the main ruler to adapt to pipes with different pipe diameters, the use range of equipment is expanded, a centering device is inserted into the main ruler, a gradienter is fixedly arranged at one end of each auxiliary ruler, and a gradienter is also fixedly arranged on the main ruler; the supporting leg comprises an upper plate symmetrically and rotatably mounted at one end of the auxiliary ruler and lower plates slidably mounted at the lower end of the upper plate, a fixing cylinder is rotatably arranged between the two lower plates, screwing devices are rotatably arranged at the upper end and the lower end of the supporting leg, the upper plate and the lower plate are slidably connected, the overall length of the supporting leg can be adjusted, and the angle of the supporting leg can be adjusted. The supporting requirements of pipes with different pipe diameters are met, and it is ensured that the centering device can be accurately placed in the center of the end of the pipe.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering module and jacket construction technology, and in particular to a centering device for large-diameter pipe assembly. Background Technology

[0002] In recent years, with the development of offshore oil, the weight of offshore oil platform modules has been gradually increasing, and the diameter of the main load-bearing components, such as columns or conduits, has also been increasing. During the prefabrication of columns and conduits, it is necessary to find the assembly reference lines for the pipes, that is, to find the 0° and 180° lines of the pipes, for positioning, installation, and measurement. The traditional method is to use a purchased standard centering tool. However, the maximum applicable pipe diameter for a standard centering tool is 1500mm. For pipe diameters exceeding 1500mm, a relatively large wooden ruler is required. This ruler is not only bulky and inconvenient to operate, but also inefficient. When marking points, the ruler needs to be moved, introducing errors, and there is also a safety hazard due to the ruler accidentally falling. To improve the efficiency of on-site marking and ensure on-site construction safety, a new type of large-diameter pipe assembly centering tool has been manufactured.

[0003] Chinese patent CN103837106A, "Pipe Measurement Equipment", describes a device that can measure the outer diameter of pipes by adding a laser scanning device. It can also directly locate and measure the position and size of the thinnest and thickest parts of the pipe wall by adding a rotating mechanism. At the same time, it can solve the problems of eccentric calculation errors and high costs caused by the need for two sets of X-ray imaging devices in fixed devices.

[0004] However, when faced with different pipe diameters and irregular pipe end faces, problems such as inaccurate centering, inconvenient operation, and poor equipment adaptability arise. Utility Model Content

[0005] The main purpose of this invention is to provide a centering device for large-diameter pipe assembly, so as to solve the problems raised in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a centering device for large-diameter pipe assembly is provided, comprising a level ruler disposed on the pipe, with support legs rotatably mounted at both ends of the level ruler, the level ruler comprising a main ruler and auxiliary rulers slidably mounted on both sides thereof, a centering device being inserted into the main ruler, and a level instrument being fixedly mounted at one end of each auxiliary ruler, and a level instrument being fixedly mounted on the main ruler as well.

[0007] The support leg includes an upper plate symmetrically rotatably mounted on one end of the vernier scale and a lower plate slidably mounted on the lower end of the upper plate, with a fixing cylinder rotatably disposed between the two lower plates, and a tightening device rotatably disposed at both the upper and lower ends of the support leg.

[0008] Furthermore, the level includes a housing and a main body fixedly installed inside the housing. One end of the vernier scale has a mounting groove, and both ends of the housing are threaded with screws. The level is fixedly installed inside the vernier scale by tightening the screws.

[0009] Furthermore, an insert plate is fixedly connected to the lower end of the upper plate, and several screw holes are opened through the insert plate. The insert plate is slidably installed in the lower plate. A screw is threadedly installed on the upper end of the lower plate, and the screw is threadedly engaged with the screw hole. An elastic layer is fixedly provided on the outer wall of the fixed cylinder.

[0010] Furthermore, the tightening device located at the upper end of the support leg includes a bolt that passes through the upper plate and the auxiliary scale and is threadedly connected thereto, with a nut threaded onto one end of the bolt; similarly, the tightening device located at the lower end of the support leg includes a bolt that passes through the lower plate and the fixed cylinder and is threadedly connected thereto, with a nut threaded onto one end of the bolt.

[0011] Furthermore, a limiting groove is formed on the main ruler, and a flexible layer is fixedly provided at the end of the limiting groove. One end of the center finder is inserted into the limiting groove. Grooves communicating with the limiting groove are formed on both sides of the main ruler, and sliders are slidably installed in the grooves.

[0012] Furthermore, a spring is fixedly installed in the groove, with one end of the spring fixedly connected to the inner wall of the groove and the other end fixedly connected to the side wall of the slider, and a limit protrusion is fixedly installed on one side of the slider.

[0013] Furthermore, extension rulers are fixedly connected to both ends of the main ruler, and a sliding groove is provided at one end of the secondary ruler.

[0014] Furthermore, the extension ruler is slidably installed in the slide groove, and fixed blocks are fixedly provided at both ends of the extension ruler, while a connecting block is fixedly provided at one end of the auxiliary ruler.

[0015] Furthermore, a bidirectional lead screw is rotatably mounted through the fixed block, and limit blocks are symmetrically fixed on the bidirectional lead screw.

[0016] Furthermore, the limiting block is rotatably installed inside the fixed block, and the two ends of the bidirectional lead screw pass through the two connecting blocks respectively and are threadedly connected to them.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this large-diameter pipe assembly center finder, the main scale and the auxiliary scale are slidably connected, which can change the overall length of the horizontal scale to adapt to pipes of different diameters and expand the range of equipment use. The upper plate and the lower plate are slidably connected, which can adjust the overall length of the support legs and the angle of the support legs to meet the support requirements of pipes of different diameters and ensure that the center finder can be accurately placed at the center position of the pipe end.

[0019] 2. In this large-diameter pipe assembly centering device, a level is fixedly installed on both the main scale and the auxiliary scale, and the two are perpendicular to each other. This allows for the detection of the pipe's levelness from multiple dimensions, ensuring that the pipe is level in all directions, improving measurement accuracy and reliability. At the same time, the level can be disassembled and installed, making it easy to replace and reducing maintenance costs.

[0020] 3. After the large-diameter pipe assembly was put into use, it played a very good role in the construction project of the Bohai-Zhongshan jacket foundation group. Compared with wooden bending rulers and other centering devices, the large-diameter pipe assembly centering device is much lighter and more convenient. During the measurement process, workers can complete the work alone, and the time required in actual work is also significantly reduced, which effectively improves the efficiency of on-site construction and saves some manpower. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the large-diameter pipe assembly center finder in a preferred embodiment of this utility model;

[0022] Figure 2 This is a preferred embodiment of the present invention. Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 3 This is a partial cross-sectional view of the support leg in a preferred embodiment of the present invention;

[0024] Figure 4 This is a sectional view of the main scale in a preferred embodiment of the present invention;

[0025] Figure 5 This is a preferred embodiment of the present invention. Figure 4 Enlarged schematic diagram of the structure at point B;

[0026] Figure 6 This is a partial structural diagram of the center-finding device for large-diameter pipe assembly in a preferred embodiment of this utility model;

[0027] Figure 7 This is a cross-sectional view with a horizontal ruler in a preferred embodiment of the present invention;

[0028] Figure 8 This is a preferred embodiment of the present invention. Figure 7 Enlarged schematic diagram of the structure at point C.

[0029] Figure label:

[0030] 1. Level; 11. Main scale; 111. Groove; 112. Spring; 113. Slider; 114. Limiting protrusion; 115. Flexible layer; 117. Fixing block; 118. Two-way lead screw; 1181. Limiting block;

[0031] 12. Vernier ruler; 121. Mounting slot; 122. Connecting block; 123. Slide groove; 124. Slot; 13. Extension ruler;

[0032] 2. Support leg; 21. Top plate; 211. Insert plate; 212. Screw hole; 213. Retaining ring;

[0033] 22. Bottom plate; 221. Screw; 23. Fixing sleeve; 231. Elastic layer; 24. Bolt; 25. Nut;

[0034] 3. Centering device; 4. Level; 41. Body; 42. Housing; 43. Screw. Detailed Implementation

[0035] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0036] This embodiment provides a centering device for large-diameter pipe assembly, including a level 1 mounted on the pipe. Both ends of the level 1 are rotatably mounted with support legs 2. The level 1 includes a main ruler 11 and a secondary ruler 12 slidably mounted on both sides of it. A centering device 3 is inserted into the main ruler 11, and a level 4 is fixedly mounted on one end of each secondary ruler 12. A level 4 is also fixedly mounted on the main ruler 11.

[0037] The support leg 2 includes an upper plate 21 symmetrically rotatably mounted on one end of the auxiliary ruler 12 and a lower plate 22 slidably mounted on the lower end of the upper plate 21. A fixing cylinder 23 is rotatably arranged between the two lower plates 22. Tightening devices are rotatably arranged at both the upper and lower ends of the support leg 2.

[0038] like Figure 1 and Figure 2 As shown, the level 4 includes a housing 42 and a main body 41 fixedly installed inside the housing 42. The auxiliary scale 12 has a mounting groove 121 at one end. Screws 43 are threaded onto both ends of the housing 42. The mounting groove 121 has a positioning hole. One end of the screw 43 is threaded into the positioning hole. The level 4 is fixedly installed inside the auxiliary scale 12 by tightening the screw 43. The installation method of the level 4 on the main scale 11 is the same as that on the auxiliary scale 12. The detachable installation method facilitates the replacement of the level 4.

[0039] like Figure 1As shown, the level 4 on the main scale 11 and the level 4 on the auxiliary scale 12 are set perpendicular to each other. In actual use, the alignment and centering of the pipes requires leveling from multiple dimensions. The main scale 11 and the auxiliary scale 12 represent different measurement directions. By setting the two levels 4 perpendicularly, the levelness of the pipes in different directions can be detected simultaneously, ensuring that the pipes are level in all directions, thus improving the accuracy and reliability of the measurement.

[0040] like Figure 3 As shown, an insert plate 211 is fixedly connected to the lower end of the upper plate 21. The insert plate 211 has several through-holes 212 and is slidably installed within the lower plate 22. A screw 221 is threaded onto the upper end of the lower plate 22, and a threaded groove adapted to the screw 221 is formed on the lower plate 22. The screw 221 is threaded into the threaded hole 212. The insertion depth of the insert plate 211 within the lower plate 22 is adjusted by sliding it, thereby adjusting the overall length of the support leg 2. The screw holes 212 at this position are aligned with the threaded grooves, and the screw 221 is screwed in, thus fixing the position of the insert plate 211. This achieves the adjustment and fixation of the length of the support leg 2, thereby satisfying the... The system is designed to support pipes of different diameters. An elastic layer 231 is fixedly installed on the outer wall of the fixed cylinder 23, and elastic protrusions are fixedly installed on the elastic layer 231. Several elastic protrusions are also fixedly installed on the upper plate 21 and lower plate 22 near the main scale 11. During use, the fixed cylinder 23 is in contact with the ground, the pipe is positioned between the two support legs 2, and the level 1 is positioned above the pipe. The elastic protrusions prevent the support legs 2 from contacting the pipe and causing wear. Furthermore, the elastic layer 231 fixedly installed on the outer wall of the fixed cylinder 23 effectively increases its friction with the ground, preventing the support legs 2 from rotating after fixing and ensuring the stability of the support legs 2.

[0041] like Figure 1 and Figure 3As shown, the tightening device located at the upper end of the support leg 2 includes a bolt 24 that passes through the upper plate 21 and the auxiliary scale 12 and is threadedly connected to them. A nut 25 is threaded onto one end of the bolt 24. Similarly, the tightening device located at the lower end of the support leg 2 includes a bolt 24 that passes through the lower plate 22 and the fixing cylinder 23 and is threadedly connected to them. A nut 25 is threaded onto one end of the bolt 24. Pipes of different diameters have different external dimensions and center of gravity positions. In order for the support leg 2 to stably and effectively support the pipe, it is necessary to adjust the angle of the support leg 2 according to the pipe diameter, and adjust its contact position and angle with the pipe. This ensures that the supporting force is evenly applied to the pipe, preventing the pipe from tilting or swaying during the support process. After the angle of the support leg 2 is fixed, the bolts 24 are tightened to make them tightly contact the upper plate 21 and the lower plate 22 respectively. Then, the nuts 25 are tightened to make them tightly contact the upper plate 21 and the lower plate 22 respectively, thereby fixing the upper plate 21 tightly to both sides of the auxiliary ruler 12. A fixing ring 213 is fixedly provided on one side of the upper plate 21, and slots 124 are provided on both sides of the auxiliary ruler 12. The fixing ring 213 is inserted into the slots 124 to enhance the connection stability between the support leg 2 and the auxiliary ruler 12.

[0042] like Figure 4 and Figure 5 As shown, a limiting groove is formed on the main ruler 11, and a flexible layer 115 is fixedly installed at the end of the limiting groove. One end of the center finder 3 is inserted into the limiting groove. Grooves 111 communicating with the limiting groove are formed on both sides of the main ruler 11. A slider 113 is slidably installed in the groove 111. The slider 113 has a trapezoidal cross-section. A spring 112 is fixedly installed in the groove 111. One end of the spring 112 is fixedly connected to the inner wall of the groove 111, and the other end is fixedly connected to the side wall of the slider 113. A limiting protrusion 114 is fixedly provided on one side of the slider 113. Fixing grooves are formed on both sides of the center finder 3. When installing the center finder 3… The center finder 3 is inserted into the limiting groove. After the limiting groove contacts the inclined surface of the slider 113, it is pushed into the groove 111 until it is fully inserted into the groove 111. The limiting protrusion 114 contacts the side wall of the center finder 3 and contracts under pressure until the limiting protrusion 114 is aligned with the fixing groove and returns to its original position, thereby fixing the center finder 3 on the main scale 11. At this time, the center finder 3 contacts the flexible layer 115, which can effectively reduce the damage to the main scale 11 caused by the vibration force generated by hitting the center finder 3 during use. When it is necessary to remove the center finder 3, a certain pulling force needs to be applied to pull the center finder 3 out of the limiting groove, so that its limiting protrusion 114 is disengaged from the fixing groove.

[0043] like Figure 4 As shown, the center finder 3 consists of a sharp punch and a fixing device. The punch is used to leave a pattern hole at the end of the pipe, and the punch is slidably mounted in the fixing device.

[0044] like Figure 6 , Figure 7 and Figure 8 As shown, both ends of the main ruler 11 are fixedly connected to extension rulers 13. One end of the secondary ruler 12 is provided with a sliding groove 123. The extension ruler 13 is slidably installed in the sliding groove 123. Both ends of the extension ruler 13 are fixedly provided with fixing blocks 117. One end of the secondary ruler 12 is fixedly provided with a connecting block 122.

[0045] like Figure 6 , Figure 7 and Figure 8 As shown, a bidirectional lead screw 118 is rotatably mounted through the fixed block 117. A limiting block 1181 is symmetrically fixed on the bidirectional lead screw 118. The limiting block 1181 is rotatably mounted within the fixed block 117 to restrict the axial movement of the bidirectional lead screw 118, preventing it from shifting or detaching from the fixed block 117. Both ends of the bidirectional lead screw 118 pass through two connecting blocks 122 and are threadedly connected to them. The threads on the bidirectional lead screw 118 have two directions, positive and negative. Therefore, rotating the bidirectional lead screw 118 causes the two connecting blocks 122 to move closer or further apart, thereby causing the two auxiliary rulers 12 to move closer or further apart, thus adjusting the insertion depth of the extension ruler 13 in the slide groove 123 and adjusting the overall length of the horizontal ruler 1. By adjusting the length of the horizontal ruler 1 and the support leg 2, it can adapt to pipes of different diameters. After the horizontal ruler 1 is adjusted, a hammer can be used to strike the centering tool 3 to leave a punch mark at the pipe end.

[0046] In practical use, this invention allows for the following adjustments based on the pipe diameter: Rotating the bidirectional screw 118 causes the two connecting blocks 122 to move away from each other when the pipe diameter is large, moving the auxiliary ruler 12 and reducing the insertion depth of the extension ruler 13 in the groove 123, thus increasing the overall length of the horizontal ruler 1. Conversely, rotating the bidirectional screw 118 causes the two connecting blocks 122 to move closer together, moving the auxiliary ruler 12 and increasing the insertion depth of the extension ruler 13 in the groove 123, thus shortening the overall length of the horizontal ruler 1. Subsequently, the sliding adjustment plate 211 is adjusted according to the pipe diameter and the length of the horizontal ruler 1. The insertion depth within 22 is adjusted so that the appropriate screw hole 212 is aligned with the screw groove on the lower plate 22. The screw 221 is screwed in to fix the position of the insert plate 211, thereby adjusting and fixing the length of the support leg 2. The contact position and angle between the support leg 2 and the pipe are adjusted, and the bolt 24 and nut 25 are tightened to fix the angle of the support leg 2. The centering tool 3 is inserted and installed in the limiting groove of the main ruler 11. The level 4 is fixedly installed on the level ruler 1 and the auxiliary ruler 12. The punch of the centering tool 3 is aligned with the center position of the pipe end. The top of the centering tool 3 is gently struck with a hammer so that the punch leaves a clear center punch hole at the pipe end.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A centering device for large-diameter pipe assembly, comprising a level (1) mounted on the pipe, wherein both ends of the level (1) are rotatably mounted with support legs (2), characterized in that, The level (1) includes a main ruler (11) and a secondary ruler (12) slidably installed on both sides thereon. A center finder (3) is inserted into the main ruler (11), and a level (4) is fixedly installed at one end of each secondary ruler (12). A level (4) is also fixedly installed on the main ruler (11). The support leg (2) includes an upper plate (21) symmetrically rotatably mounted on one end of the auxiliary ruler (12) and a lower plate (22) slidably mounted on the lower end of the upper plate (21), and a fixed cylinder (23) is rotatably arranged between the two lower plates (22). Both the upper and lower ends of the support leg (2) are rotatably equipped with tightening devices.

2. The large-diameter pipe assembly centering device according to claim 1, characterized in that, The level (4) includes a housing (42) and a body (41) fixedly installed inside the housing (42). One end of the auxiliary ruler (12) is provided with an installation groove (121). Both ends of the housing (42) are threaded with screws (43). The level (4) is fixedly installed inside the auxiliary ruler (12) by tightening the screws (43).

3. The large-diameter pipe assembly centering device according to claim 2, characterized in that, The lower end of the upper plate (21) is fixedly connected to a plug plate (211), and the plug plate (211) has several screw holes (212) through it. The plug plate (211) is slidably installed in the lower plate (22). The upper end of the lower plate (22) is threaded with a screw (221), and the screw (221) is threadedly engaged with the screw hole (212). An elastic layer (231) is fixedly provided on the outer wall of the fixed cylinder (23).

4. The large-diameter pipe assembly centering device according to claim 3, characterized in that, The tightening device located at the upper end of the support leg (2) includes a bolt (24) that passes through the upper plate (21) and the auxiliary ruler (12) and is threadedly connected thereto. A nut (25) is threadedly installed at one end of the bolt (24). Similarly, the tightening device located at the lower end of the support leg (2) includes a bolt (24) that passes through the lower plate (22) and the fixing cylinder (23) and is threadedly connected thereto. A nut (25) is threadedly installed at one end of the bolt (24).

5. The large-diameter pipe assembly centering device according to claim 4, characterized in that, A limiting groove is provided on the main ruler (11), and a flexible layer (115) is fixedly provided at the end of the limiting groove. One end of the center finder (3) is inserted into the limiting groove. Grooves (111) communicating with the limiting groove are provided on both sides of the main ruler (11). A slider (113) is slidably installed in the groove (111).

6. The large-diameter pipe assembly centering device according to claim 5, characterized in that, A spring (112) is fixedly installed inside the groove (111). One end of the spring (112) is fixedly connected to the inner wall of the groove (111), and the other end is fixedly connected to the side wall of the slider (113). A limit protrusion (114) is fixedly installed on one side of the slider (113).

7. The large-diameter pipe assembly centering device according to claim 6, characterized in that, Both ends of the main ruler (11) are fixedly connected to extension rulers (13), and one end of the secondary ruler (12) is provided with a sliding groove (123).

8. The large-diameter pipe assembly centering device according to claim 7, characterized in that, The extension ruler (13) is slidably installed in the slide groove (123), and fixed blocks (117) are fixedly provided at both ends of the extension ruler (13), and a connecting block (122) is fixedly provided at one end of the auxiliary ruler (12).

9. The large-diameter pipe assembly centering device according to claim 8, characterized in that, A bidirectional lead screw (118) is rotatably mounted through the fixed block (117), and limit blocks (1181) are symmetrically fixed on the bidirectional lead screw (118).

10. The large-diameter pipe assembly centering device according to claim 9, characterized in that, The limiting block (1181) is rotatably installed inside the fixed block (117), and the two ends of the bidirectional lead screw (118) pass through the two connecting blocks (122) respectively and are threadedly connected to them.

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