Novel copper liner structure of internal clamp

Abstract

The utility model discloses a novel copper liner structure of an internal clamp. The novel copper liner structure comprises a base, one side of the upper end of the base is fixedly connected with the jacking claw, the lower end of the jacking claw is fixedly connected with the jacking shaft, the jacking shaft penetrates through the base, a first center hole is formed in the base, the first center hole is located in one side of the jacking shaft, the connecting plate is located above the first center hole of the base, a second center hole is formed in the connecting plate, and the second center hole is located in the second center hole. The lower end of the first center hole is fixedly connected with a first blocking table, the fixing shaft is located in the first center hole, the surface of the fixing shaft is sleeved with a spring, and the upper end of the connecting plate is fixedly connected with a copper gasket. Compared with the prior art, the device has the advantages that molten iron and welding flux can be prevented from crystallizing, splashing and permeating into an inner cavity of a steel pipe, the device can be synchronized with a tensioning mechanism of the aligning device, no extra operation requirement is needed in use, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline processing, in particular to a novel copper liner structure of an inner jointer. Background Art

[0002] Internal butt joints with copper linings are generally suitable for single-sided welding and double-sided forming processes. Installing copper lining components on ordinary internal butt joints can ensure smooth inner walls of steel pipe butt welding, and clean the inside of the pipeline without manual processing, which can improve the quality and laying speed of the conveying pipeline.

[0003] Most of the existing copper liner structures of the inner joint device are compression spring hook type or disc spring wedge type. The copper liner of the hook type structure has poor thermal conductivity, and the compression spring is easily affected by high temperature and its life. The spring will creep and relax as the use temperature increases, and the elastic modulus E and shear modulus G will decrease accordingly. The higher the temperature, the greater the stress, and the faster the creep rate. The disc spring wedge type structure is more complicated and requires higher processing accuracy. In addition, the above two copper liner structures require the processing of a special copper liner reset mechanism, which is a combination of springs, pins and top screws. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a novel copper liner structure for an inner jointer which can not only prevent molten iron, solder crystallization and splashing from penetrating into the inner cavity of the steel pipe, but also be synchronized with the tensioning mechanism of the jointer, and has no additional operation requirements for use, which is convenient and quick.

[0005] In order to solve the above problems, the technical solution of the utility model is: a novel copper liner structure of an inner aligner, comprising a base, a lifting claw, a lifting shaft, a connecting plate, a stopper, a fixed shaft, a spring, and a copper liner;

[0006] Preferably, one side of the upper end of the base is fixedly connected to a lifting claw, and the lower end of the lifting claw is fixedly connected to a lifting shaft, and the lifting shaft passes through the base, and a center hole 1 is provided inside the base, and the center hole 1 is located on one side of the lifting shaft. The connecting plate is located above the center hole 1 of the base, and a center hole 2 is provided inside the connecting plate. The lower end of the center hole is fixedly connected to a stopper 1, and the fixed shaft is located inside the center hole 1. A spring is sleeved on the surface of the fixed shaft, and the upper end of the connecting plate is fixedly connected to a copper pad.

[0007] Furthermore, a spiral groove 1 is provided on the upper surface of the base, the lower end of the spring is located inside the spiral groove 1, a spiral groove 2 is provided on the lower end of the connecting plate, and the upper end of the spring is located inside the spiral groove 2.

[0008] Furthermore, the upper end of the fixed shaft is small and the lower end is large, the surface of the small end of the fixed shaft is provided with threads, the inner surface of the second center hole is provided with internal threads, and the lower end of the second center hole is provided with a second stopper.

[0009] Furthermore, a jacking screw is provided at one end of the connecting plate away from the jacking claw.

[0010] Furthermore, the jacking claws, the jacking shaft, the connecting plate and the copper gasket are all connected by screws.

[0011] Furthermore, both ends of the copper pad are inclined at 45 degrees.

[0012] Compared with the existing technology, the utility model has the following advantages: during welding, the arc on the copper lining plate of the inner jointer is close to the inner annular seam of the steel pipe to completely seal the inner annular seam, so that molten iron, welding flux crystals and splashes cannot penetrate into the inner cavity of the steel pipe, and at the same time, the generation of weld nodules and burrs is avoided, ensuring that the inner wall of the pipe is smooth and clean, and the inside of the pipe is clean without manual grinding. The copper lining assembly is only installed on the existing pipe jointer, and is synchronized with the tensioning mechanism of the jointer. There is no additional operation requirement for use, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a three-dimensional copper liner structure of a novel inner mouthpiece Figure 1 .

[0014] Figure 2 The utility model is a three-dimensional copper liner structure of a novel inner mouthpiece Figure 2 .

[0015] Figure 3 The utility model is a top view of a novel copper liner structure of an inner aligner.

[0016] Figure 4 The utility model is a BB-surface cross-sectional view of a novel copper liner structure of an inner aligner.

[0017] Figure 5 It is a sectional view of the AA surface of a novel copper liner structure of an inner aligner of the utility model.

[0018] As shown in the figure: 1. Base; 2. Lifting claw; 3. Lifting shaft; 4. Center hole 1; 5. Connecting plate; 6. Center hole 2; 7. Stop platform 1; 8. Fixed shaft; 9. Spring; 10. Copper gasket; 11. Spiral groove 1; 12. Spiral groove 2; 13. Lifting screw. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0020] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0022] like Figures 1 to 5 As shown, a novel copper liner structure of an inner matcher is shown, the lifting claw 2 is fixed to the upper end of the lifting shaft 3 by bolts and keys, the base 1 is fixed to the bottom of the lifting claw 2 by bolts, the upper end face of the center hole 14 on the right side of the base 1 and the lower end face of the center hole 26 in the connecting plate 5 are respectively processed with a spiral groove 11 and a spiral groove 2 12 consistent with the size of the spring 9, the lower section of the center hole 14 of the base 1 is processed with a stopper 7, the fixed shaft 8 passes through the center hole 14 inside the base 1 from bottom to top, the shoulder of the large end of the fixed shaft 8 is limited at a stopper, the spring 9 is set on the fixed shaft 8, the lower end face of the spring 9 is placed in the spiral groove 11 on the upper end face of the base 1, and the upper end face of the spring 9 is placed in the spiral groove 2 12 at the lower end of the connecting plate 5, the small end external thread of the fixed shaft 8 is matched with the internal thread of the center hole 26 of the connecting plate 5, and a stopper 2 is processed on the lower end face of the center hole 26 of the connecting plate 5, so that it can be ensured that the spring 9 is in the required pre-tightened state after the fixed shaft 8 is fully screwed into the connecting plate 5.

[0023] A top screw hole is provided on the right side of the connecting plate, and a side top screw 13 is added after the fixed shaft 8 is screwed into place to prevent the fixed shaft 8 from loosening during use. The connecting plate 5 is located below the copper gasket 10 and is connected to the copper gasket 10 as a whole with bolts.

[0024] During specific use, the copper gasket 10 is installed on the expansion claw of the external equipment. There are as many groups of copper gaskets 10 as there are expansion claws in a single row. Multiple groups of copper gaskets 10 are evenly distributed around the circumference. The arc diameter of the upper arc surface of the copper gasket 10 is exactly the same as the inner diameter of the pipe. When the expansion claw is lifted up, that is, the copper gasket 10 is in use, multiple copper gaskets 10 fit together without gaps to form a complete circle that just covers the joint of the pipe mouth, perfectly isolating the space inside and outside the weld. Both ends of each copper gasket 10 are forty-five degree inclined surfaces. When the expansion claw falls back, the circumference formed by the multiple copper gaskets 10 shrinks, and the copper gaskets 10 are forced to stagger along the inclined surface at a certain angle to reach the retracted state. In this process, the swing of the copper gasket 10 around the central axis is achieved by the torsion of the spring 9 and the mutual extrusion between the inclined surfaces of adjacent copper gaskets 10.

[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A novel inner aligner copper liner structure, characterized in that: It comprises a base (1), a lifting claw (2), a lifting shaft (3), a connecting plate (5), a stopper (7), a fixed shaft (8), a spring (9), and a copper liner (10); One side of the upper end of the base (1) is fixedly connected to a lifting claw (2), and the lower end of the lifting claw (2) is fixedly connected to a lifting shaft (3), and the lifting shaft (3) passes through the base (1). A center hole (4) is provided inside the base (1), and the center hole (4) is located on one side of the lifting shaft (3). The connecting plate (5) is located above the center hole (4) of the base (1), and a center hole (6) is provided inside the connecting plate (5). The lower end of the center hole (4) is fixedly connected to a stopper (7), and the fixed shaft (8) is located inside the center hole (4). A spring (9) is sleeved on the surface of the fixed shaft (8), and the upper end of the connecting plate (5) is fixedly connected to a copper gasket (10).

2. A novel inner aligner copper liner structure according to claim 1, characterized in that: The upper surface of the base (1) is provided with a spiral groove 1 (11), the lower end of the spring (9) is located inside the spiral groove 1 (11), the lower end of the connecting plate (5) is provided with a spiral groove 2 (12), and the upper end of the spring (9) is located inside the spiral groove 2 (12).

3. The novel inner aligner copper liner structure according to claim 1 is characterized in that: The fixed shaft (8) has a small upper end and a large lower end, the small end surface of the fixed shaft (8) is provided with a thread, the inner surface of the second center hole (6) is provided with an internal thread, and the lower end of the second center hole (6) is provided with a second stopper.

4. The novel inner aligner copper liner structure according to claim 1 is characterized in that: A jacking screw (13) is provided at one end of the connecting plate (5) away from the jacking claw (2).

5. The novel inner aligner copper liner structure according to claim 1 is characterized in that: The jacking claw (2), the jacking shaft (3), the connecting plate (5) and the copper gasket (10) are all connected by screws.

6. The novel inner aligner copper liner structure according to claim 1 is characterized in that: Both ends of the copper liner (10) are inclined at 45 degrees.

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