Adjustable gap endocoupler tensioning mechanism

Abstract

The utility model relates to pipeline construction technical field, especially a kind of adjustable gap inner mouthpiece tensioning mechanism, including front cylinder body and rear cylinder body, two groups of support components are symmetrically arranged in front cylinder body and rear cylinder body outside, each group of support components includes two support blocks symmetrically arranged, one end of front cylinder body and rear cylinder body is respectively equipped with front tension cylinder cover and rear tension cylinder cover, the inside of front tension cylinder cover and rear tension cylinder cover is respectively equipped with front adjusting air cylinder and rear adjusting air cylinder, one end of piston rod is fixedly connected with front piston, front inner connecting disc is fixedly sleeved on piston rod, front inner connecting disc is transmission connection with two support blocks by front connecting rod mechanism, the other end of piston rod is fixedly connected with piston rod flange, piston rod flange and rear piston are fixedly connected with rear inner connecting disc between, rear inner connecting disc is transmission connection with two support blocks by rear connecting rod mechanism;The utility model adapts to have gap, mouthpiece precision lower pipeline mouthpiece butt joint, and it is convenient for the construction demand of different technology on site.

Description

Technical Field

[0001] This utility model relates to the field of pipeline construction technology, and more specifically to an adjustable gap internal alignment tensioning mechanism. Background Technology

[0002] Pipeline end-joining devices are essential welding equipment in pipe assembly, suitable for root welding of various pipe diameters. They are widely used in long-distance pipelines. The end-joining device is placed between the centers of two pipes to ensure that the center lines of the pipe ends coincide with the center line of the end-joining device. The assembly operation is completed through the internal tensioning mechanism. During the assembly process, pipe deformation and misalignment often lead to large gaps between the pipe ends, resulting in low alignment accuracy that exceeds the pipe end assembly process standards. This is time-consuming, labor-intensive, and requires adjusting the gap with shims, adding complexity to the pipe end assembly process. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustable gap internal alignment tensioning mechanism to adapt to pipe alignment with large gaps and low alignment accuracy, and to facilitate the construction needs of different processes on site.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An adjustable gap internal clamping tensioning mechanism includes a front cylinder and a rear cylinder mounted together. Two sets of support assemblies are symmetrically arranged on the outer sides of the front and rear cylinders. Each set of support assemblies includes two symmetrically arranged support blocks. A front tensioning cylinder head and a rear tensioning cylinder head are respectively installed at the ends of the front and rear cylinders that are far apart from each other. A front adjusting cylinder and a rear adjusting cylinder are respectively installed on the inner sides of the front and rear tensioning cylinder heads. The front and rear adjusting cylinders are arranged opposite to each other. A piston rod is provided between the front piston of the front adjusting cylinder and the rear piston of the rear adjusting cylinder. One end of the piston rod is fixedly connected to the front piston. A front inner connecting plate is fixedly sleeved on the piston rod. The front inner connecting plate is drivenly connected to two support blocks of one set of support assemblies through a front connecting rod mechanism. A piston rod flange is fixedly connected to the other end of the piston rod. A rear inner connecting plate is fixedly connected between the piston rod flange and the rear piston. The rear inner connecting plate is drivenly connected to two support blocks of another set of support assemblies through a rear connecting rod mechanism.

[0006] Furthermore, a front outer connecting plate and a rear outer connecting plate are respectively fixedly installed on the outer sides of the front cylinder block and the rear cylinder block that are close to each other. A connecting plate guide shaft is fixedly connected to the front outer connecting plate, and a connecting plate guide sleeve is fixedly connected to the rear outer connecting plate. The connecting plate guide sleeve is slidably sleeved on the connecting plate guide shaft. A flange guide shaft is provided on the opposite side of the front outer connecting plate and the rear outer connecting plate, and a flange guide sleeve is slidably sleeved on the flange guide shaft.

[0007] Furthermore, an oilless bearing is provided between the connecting disc guide shaft and the connecting disc guide sleeve.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] The piston rod is driven to move by the front and rear adjusting cylinders, which in turn moves the front and rear inner connecting plates. This, in turn, drives the support blocks on both sides to move away from or closer to the front and rear cylinder bodies via the front and rear connecting rod mechanisms. This allows the support blocks of the two sets of support components to extend outward by different lengths, thus adapting to pipe joints with large gaps and low alignment accuracy, and facilitating the construction needs of different processes on site. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] 1. Front cylinder block; 2. Rear cylinder block; 3. Support block; 4. Front tension cylinder head; 5. Rear tension cylinder head; 6. Front piston; 7. Rear piston; 8. Piston rod; 9. Front inner connecting plate; 10. Front connecting rod mechanism; 11. Piston rod flange; 12. Rear inner connecting plate; 13. Rear connecting rod mechanism; 14. Front outer connecting plate; 15. Rear outer connecting plate; 16. Connecting plate guide shaft; 17. Connecting plate guide sleeve; 18. Flange guide shaft; 19. Flange guide sleeve; 20. Oil-free bearing. Detailed Implementation

[0012] like Figure 1 As shown, the adjustable gap tensioning mechanism for the mouthpiece includes a front cylinder 1 and a rear cylinder 2 mounted together. Two sets of support assemblies are symmetrically arranged on the outer sides of the front cylinder 1 and the rear cylinder 2. Each set of support assemblies includes two symmetrically arranged support blocks 3. A front tensioning cylinder cover 4 and a rear tensioning cylinder cover 5 are respectively installed at the ends of the front cylinder 1 and the rear cylinder 2 that are far apart from each other. A front adjusting cylinder and a rear adjusting cylinder are respectively installed on the inner sides of the front tensioning cylinder cover 4 and the rear tensioning cylinder cover 5. The front adjusting cylinder and the rear adjusting cylinder are arranged opposite to each other. The front piston 6 of the front adjusting cylinder and the rear adjusting cylinder... A piston rod 8 is provided between the rear piston 7 of the cylinder. One end of the piston rod 8 is fixedly connected to the front piston 6. A front inner connecting plate 9 is fixedly sleeved on the piston rod 8. The front inner connecting plate 9 is drivenly connected to two support blocks 3 of a set of support components through a front connecting rod mechanism 10. A piston rod flange 11 is fixedly connected to the other end of the piston rod 8. A rear inner connecting plate 12 is fixedly connected between the piston rod flange 11 and the rear piston 7. The rear inner connecting plate 12 is drivenly connected to two support blocks 3 of another set of support components through a rear connecting rod mechanism 13.

[0013] A front outer connecting plate 14 and a rear outer connecting plate 15 are fixedly installed on the outer sides of the front cylinder block 1 and the rear cylinder block 2 respectively, which are close to each other. A connecting plate guide shaft 16 is fixedly connected to the front outer connecting plate 14, and a connecting plate guide sleeve 17 is fixedly connected to the rear outer connecting plate 15. The connecting plate guide sleeve 17 is slidably sleeved on the connecting plate guide shaft 16. A flange guide shaft 18 is provided on the opposite side of the front outer connecting plate 14 and the rear outer connecting plate 15. A flange guide sleeve 19 is slidably sleeved on the flange guide shaft 18.

[0014] An oilless bearing 20 is provided between the connecting disc guide shaft 16 and the connecting disc guide sleeve 17.

[0015] Working principle:

[0016] The piston rod 8 is driven to move by the front and rear adjusting cylinders (not shown in the figure), which in turn moves the front inner connecting plate 9 and the rear inner connecting plate 12. This, in turn, drives the support blocks 3 on both sides to move away from or closer to the front cylinder 1 and the rear cylinder 2 through the front connecting rod mechanism 10 and the rear connecting rod mechanism 13. This allows the support blocks 3 of the two sets of support components to extend outward by different lengths, thereby adapting to pipe joints with large gaps and low alignment accuracy, and facilitating the construction needs of different processes on site.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable gap internal clamping tensioning mechanism, characterized in that: The system includes a front cylinder block (1) and a rear cylinder block (2) mounted together. Two sets of support assemblies are symmetrically arranged on the outer sides of the front cylinder block (1) and the rear cylinder block (2). Each set of support assemblies includes two symmetrically arranged support blocks (3). A front tension cylinder head (4) and a rear tension cylinder head (5) are respectively installed at the ends of the front cylinder block (1) and the rear cylinder block (2) that are far apart from each other. A front adjusting cylinder and a rear adjusting cylinder are respectively installed on the inner sides of the front tension cylinder head (4) and the rear tension cylinder head (5). The front adjusting cylinder and the rear adjusting cylinder are arranged opposite to each other. A space is provided between the front piston (6) of the front adjusting cylinder and the rear piston (7) of the rear adjusting cylinder. A piston rod (8) is fixedly connected at one end to the front piston (6). A front inner connecting plate (9) is fixedly sleeved on the piston rod (8). The front inner connecting plate (9) is driven to two support blocks (3) of a set of support components through a front connecting rod mechanism (10). A piston rod flange (11) is fixedly connected at the other end of the piston rod (8). A rear inner connecting plate (12) is fixedly connected between the piston rod flange (11) and the rear piston (7). The rear inner connecting plate (12) is driven to two support blocks (3) of another set of support components through a rear connecting rod mechanism (13).

2. The adjustable gap internal clamping tensioning mechanism as described in claim 1, characterized in that: The front cylinder (1) and the rear cylinder (2) are respectively fixedly mounted on the outer sides of their respective close ends. A connecting disc (14) and a rear connecting disc (15) are fixedly connected to the front connecting disc (14). A connecting disc guide shaft (16) is fixedly connected to the front connecting disc (14). A connecting disc guide sleeve (17) is fixedly connected to the rear connecting disc (15). The connecting disc guide sleeve (17) is slidably mounted on the connecting disc guide shaft (16). A flange guide shaft (18) is provided on the opposite side of the front connecting disc (14) and the rear connecting disc (15). A flange guide sleeve (19) is slidably mounted on the flange guide shaft (18).

3. The adjustable gap internal clamping tensioning mechanism as described in claim 2, characterized in that: An oilless bearing (20) is provided between the connecting disc guide shaft (16) and the connecting disc guide sleeve (17).

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