A mouthpiece

Abstract

The utility model provides a kind of mouthpiece, including upper fixed frame and lower fixed frame, the lower surface of lower fixed frame is connected fixed plate by connecting plate, fixed plate is connected first screw in vertical thread, the tail end of first screw is upwards, support plate is set between lower fixed frame and fixed plate, the tail end of first screw is directly opposite in support plate, limit structure is set between support plate and fixed plate to make support plate can only move up and down, two V-shaped blocks are set in support plate left and right symmetry, two V-shaped blocks can be by the two half rings of lower fixed frame upwards from.This utility model utilizes the centering function of V-shaped block itself, only need to adjust V-shaped block position in up and down direction, can adjust pipeline to concentric with mouthpiece, i.e. Centering, improve the alignment adjustment speed of two pipelines, improve pipeline welding operation efficiency, and can be centered adjustment to the pipeline of different pipe diameter.

Description

Technical Field

[0001] This utility model belongs to the field of pipe welding, and in particular relates to a pipe fitting device. Background Technology

[0002] When welding two pipes, in order to facilitate the welding operation, ensure the welding quality, and prevent hard bends at the welding position, the two pipes should be adjusted before welding so that the joints of the two pipes are aligned.

[0003] Pipe welding often uses a pipe fitting device, which consists of two semi-circular fixing frames. The two fixing frames face each other, are hinged at one end, and have a hanging ring and a jack at the other end. The pipe fitting device is fitted onto the joints of the two pipes. The jack locks and presses against the hanging ring, thereby locking the pipe fitting device and the two pipe joints together. Because the two pipe joints are locked by the pipe fitting device, the two pipe joints are aligned.

[0004] However, due to manufacturing and assembly errors in the pipes and the matching fitting itself, if the outer diameter of the pipe is smaller than the inner diameter of the matching fitting, and this difference exceeds the set range, a large gap appears between the pipe and the matching fitting. This prevents the matching fitting from locking the pipe securely, resulting in poor alignment and affecting the welding of the subsequent two pipes. Furthermore, the matching fitting's inner diameter only corresponds to one pipe diameter setting, leading to poor versatility and practicality. To address these issues, several screws are installed on the circumference of the matching fitting. Adjusting the length of these screws screwed into the fitting allows for alignment and fixation of pipes with different diameters. However, in practice, it has been found that the adjustment process for this type of matching fitting is cumbersome, causing inconvenience to construction and production. Utility Model Content

[0005] In view of this, the present invention aims to provide a mouth-aligning device to improve its ease of operation and versatility.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A mouth-aligning device includes an upper fixed frame and a lower fixed frame, both of which are semi-ring structures, each comprising two semi-rings arranged side by side. One end of the upper and lower fixed frames intersects, and the other end of the upper fixed frame is hinged to a hanging ring. A jack is provided at the other end of the lower fixed frame corresponding to the hanging ring. A fixed plate is connected to the lower fixed frame via a connecting plate. The fixed plate is vertically threaded with a first screw, the tail end of which faces upward. A support plate is provided between the lower fixed frame and the fixed plate, with the support plate directly opposite the tail end of the first screw. A limiting structure is provided between the support plate and the fixed plate to allow the support plate to move only up and down. Two V-shaped blocks are symmetrically arranged on the support plate, and the two V-shaped blocks can pass upward through the two semi-rings of the lower fixed frame into the mouth-aligning device.

[0008] Furthermore, the limiting structure includes two guide posts on the fixed plate and two guide holes on the support plate, with the two guide posts extending through the two guide holes.

[0009] Furthermore, along a horizontal direction perpendicular to the center line of the connector, the two guide posts are arranged on both sides of the first screw.

[0010] Furthermore, a level is provided at the top of the upper fixing frame, and the level is perpendicular to the center line of the alignment device.

[0011] Furthermore, the two semi-rings of the upper fixing frame are connected at their highest points by a crossbeam, and two second screws are provided on the two V-blocks of the crossbeam, with the tail ends of the two second screws pointing downwards and facing the V-blocks.

[0012] Furthermore, the two semi-rings of the upper fixed frame and the two semi-rings of the lower fixed frame are connected by crossbars.

[0013] Compared with the prior art, the matching device of this utility model has the following advantages:

[0014] (1) This utility model utilizes the centering function of the V-block itself. By simply adjusting the position of the V-block in the up and down direction, the pipe can be adjusted to be concentric with the alignment tool, i.e., aligned. Compared with the current method of setting several screws on the circumference of the alignment tool and adjusting the position of the pipe in multiple directions, this utility model greatly improves the alignment adjustment speed of the two pipes, improves the efficiency of pipe welding operations, and can adjust the alignment of pipes of different diameters.

[0015] (2) In this utility model, the second screw and the first screw work together to fix the pipe interface that has been adjusted. The fitting device locks the two pipe interfaces in place. The adjustment and fixing operation is simple and efficient.

[0016] (3) In this utility model, the setting of the level makes it easy for the operator to know the position of the alignment device at a glance, and can adjust the alignment device in time so that the opening of the V-block is vertically upward, ensuring that the center of the pipeline is deviated in two directions, rather than in multiple directions, so as to facilitate the alignment and adjustment of the pipeline and the alignment device. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a front view of a mouthpiece according to an embodiment of the present utility model;

[0019] Figure 2This is a top view of a mouthpiece according to an embodiment of the present utility model;

[0020] Figure 3 for Figure 2 AA section view;

[0021] Figure 4 This is a diagram showing the arrangement of the two V-shaped blocks on the support plate;

[0022] Figure 5 This is a diagram showing the operational status of this embodiment.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Upper fixed frame; 2-Lower fixed frame; 3-Hanging ring; 4-Jack; 5-Level; 6-Fixing plate; 7-First screw; 8-Guide column; 9-Support plate; 91-Guide hole; 10-V-block; 11-Connecting plate; 12-Crossbar; 13-Pipe; 14-Second screw; 15-Crossbeam. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 , 2 As shown in Figure 3, a mouth-aligning device includes an upper fixed frame 1 and a lower fixed frame 2. Both the upper fixed frame 1 and the lower fixed frame 2 are semi-ring structures, each including two semi-rings arranged side by side. A crossbar 12 is provided between the two semi-rings to connect them and improve their installation strength. One end of the upper fixed frame 1 and the lower fixed frame 2 are joined together. The other end of the upper fixed frame 1 is hinged to a hanging ring 3, and the other end of the lower fixed frame 2 is provided with a jack 4 corresponding to the hanging ring 3. This structure is a common structure for mouth-aligning devices and will not be described in detail here.

[0027] In this invention, a horizontal ruler 5 is installed at the top of the upper fixed frame 1, and the horizontal ruler 5 is perpendicular to the center line of the mouthpiece. A fixed plate 6 is installed directly below the lower fixed frame 2. The left and right ends of the fixed plate 6 are connected to the lower fixed frame 2 through connecting plates 11. The center of the fixed plate 6 is located on the symmetrical plane of the two semi-rings of the lower fixed frame 2, and this center is directly opposite the center of the mouthpiece. The fixed plate 6 is vertically threaded with a first screw 7, with the tail end of the first screw 7 facing upward. Two guide posts 8 are vertically installed on the fixed plate 6, arranged on both sides of the first screw 7 along a horizontal direction perpendicular to the center line of the mouthpiece. A support plate 9 is installed between the lower fixed frame 2 and the fixed plate 6, with the support plate 9 facing the tail end of the first screw 7. The support plate 9 has two guide holes 91 corresponding to the two guide posts 8, and each guide post 8 passes through the corresponding guide hole 91. This structure allows the support plate 9 to move only up and down relative to the fixed plate 6, and cannot move relative to it in other directions. Two V-shaped blocks 10 are symmetrically arranged on the support plate 9, and the arrangement of the V-shaped blocks and the support plate 9 is as follows: Figure 4 As shown. The V-block 10 is located directly below the center of the coupling device, and the center line of the V-shaped opening of the V-block 10 is parallel to the center line of the coupling device and located directly below the center line of the coupling device. The first screw 7 pushes the support plate 9, allowing the two V-blocks 10 to pass through the two semi-rings of the lower fixing frame 2 into the coupling device and support the pipe.

[0028] A crossbeam 15 is installed at the highest point of the two semi-rings of the upper fixed frame 1. The crossbeam 15 connects the two semi-rings. Two second screws 14 are installed on the two V-blocks 10 corresponding to the crossbeam 15, with the tail ends of the two second screws 14 pointing downwards and facing the V-blocks 10.

[0029] The operation process of this utility model is as follows: the fitting device is installed at the interface of the two pipes 13. After installation, the level should be located at the top of the pipe. The hanging ring 3 is put on the push rod of the jack 4. If the outer diameter of the pipe and the inner diameter of the fitting device correspond, the jack is used to hold the hanging ring 3 to lock and fix the fitting device and the two pipes, so as to achieve the alignment of the two pipe interfaces. If the outer diameter of pipe 13 is smaller than the inner diameter of the coupling device, jack 4 can be used to initially support the hanging ring 3. Connect the upper fixing bracket 1 and lower fixing bracket 2 of the coupling device. At this point, the coupling device is hung on pipe 13. Screw in the first screw 7 and lift the support plate 9 until each of the two V-blocks 10 supports one pipe 13. Due to the self-centering function of the V-blocks, the two pipes 13 are now aligned, with the center of pipe 13 only having a vertical deviation relative to the center of the coupling device. Screw in the second screw 14 while simultaneously loosening the first screw 7. The second screw 14 and the first screw 7 work together until pipe 13 is adjusted to be concentric with the coupling device. At this point, the two pipe interfaces are aligned. Jack 4 further presses down on the light ring to lock the coupling device, completing the alignment and fixing of the two pipe 13 interfaces. Figure 5As shown. By using this alignment tool, the relative position of the tool and the pipe 13 can be adjusted vertically to achieve alignment between the pipe and the tool, improving the efficiency of pipe welding operations and enabling alignment operations for pipes of different diameters.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mouth-matching device, comprising an upper fixed frame (1) and a lower fixed frame (2), both the upper fixed frame (1) and the lower fixed frame (2) being semi-ring structures, each comprising two semi-rings arranged side by side, one end of the upper fixed frame (1) and the lower fixed frame (2) being joined together, the other end of the upper fixed frame (1) being hinged to a hanging ring (3), and the other end of the lower fixed frame (2) being provided with a jack (4) corresponding to the hanging ring (3), characterized in that: The lower fixing frame (2) is connected to the fixing plate (6) via a connecting plate (11). The fixing plate (6) is vertically threaded with a first screw (7), with the tail end of the first screw (7) facing upwards. A support plate (9) is provided between the lower fixing frame (2) and the fixing plate (6), with the support plate (9) facing the tail end of the first screw (7). A limiting structure is provided between the support plate (9) and the fixing plate (6) so that the support plate (9) can only move up and down. Two V-shaped blocks (10) are symmetrically arranged on the support plate (9). The two V-shaped blocks (10) can pass upwards between the two semi-rings of the lower fixing frame (2) and enter the matching device.

2. A mouthpiece according to claim 1, wherein: The limiting structure includes two guide posts (8) provided on the fixing plate (6) and two guide holes (91) provided on the support plate (9), with the two guide posts (8) passing through the two guide holes (91).

3. A mouthpiece according to claim 2, wherein: Along a horizontal direction and perpendicular to the center line of the connector, the two guide posts (8) are arranged on both sides of the first screw (7).

4. The matching device according to claim 1, characterized in that: A horizontal ruler (5) is provided at the top of the upper fixing frame (1), and the horizontal ruler (5) is perpendicular to the center line of the mouthpiece.

5. A mouthpiece according to claim 1, wherein: The two semi-rings of the upper fixing frame (1) are connected by a crossbeam (15). The crossbeam (15) is provided with two second screws (14) on the two V-blocks (10) respectively. The tail ends of the two second screws (14) face downwards and are directly opposite the V-blocks (10).

6. The matching device according to claim 1, characterized in that: The two half-rings of the upper fixed frame (1) and the two half-rings of the lower fixed frame (2) are connected by crossbars (12).

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