Back protection mechanism for welded pipe

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By setting up structures such as protective main beams and protective copper drag covers in the welded pipe, using external motors to drive the slow movement of the protective copper drag covers and emit protective gas, the problem of easy oxidation on the back of the welded pipe is solved, and the strength and safety of the welded pipe are improved.

CN222873649UActive Publication Date: 2025-05-16KUNSHAN XINGKE RUOTE MACHINERY EQUIPMENT CO LTD

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Patent Information

Application Number: CN202421568123.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-07-04
Publication Date: 2025-05-16
Estimated Expiration: 2034-07-04

AI Technical Summary

Technical Problem

During the welding process of existing welded pipes, the back of the welded pipes is easily subjected to oxygen oxidation, resulting in the formation of oxides or pores, reducing the strength of the weld and increasing the risk of leakage or breaking.

Method used

A back protection mechanism for welded pipe is designed. By setting a protective main beam, a protective copper drag cover, an active drive shell, a driven drive shell and a sliding mechanism in the welded pipe, the output end of the reducer is driven to rotate by an external motor, which drives the slow movement of the protective copper drag cover, and emitting protective gas through the air outlet holes to fill different positions in the pipe body to prevent oxygen from entering.

Benefits of technology

Effectively prevent oxidation on the back of the welded pipe, improve the protection effect of the protective gas on the back of the welded pipe, enhance the strength of the welded pipe and reduce the risk of leakage or breaking.

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Abstract

The utility model discloses a back protection mechanism for a welded pipe, which comprises a pipe body, a protection main beam and a protection copper dragging cover are arranged in the pipe body, a driving driving shell and a driven driving shell are respectively arranged at two ends of the pipe body, a sliding mechanism is arranged on the protection copper dragging cover, a first rotating rod and a driving gear are arranged in the driving driving shell, and a second rotating rod and a driven gear are arranged in the driven driving shell. A second rotating rod and a driven gear are arranged in the driven driving shell, a plurality of sets of air outlet holes are formed in one side of the protection copper dragging cover, a fixing pipe is arranged at one end of the protection copper dragging cover, a speed reducer is arranged on one side of the driving driving shell, a mounting plate is arranged on a pipe body, and a connecting block is arranged at one end of the driven driving shell. Through the arrangement of the protection main beam, the protection copper dragging cover, the driving driving shell, the driven driving shell, the sliding mechanism, the air outlet hole and the fixing pipe, the structure can play a role in protecting the back face of the welding seam of the welded pipe, and the back face of the welding seam of the welded pipe is not prone to being oxidized by oxygen.

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Description

Technical Field

[0001] The utility model relates to the technical field of welded pipes, in particular to a back protection mechanism for welded pipes. Background Art

[0002] Welded pipes usually refer to pipes connected by welding process, which can be used to transport liquids, gases or other substances.

[0003] The prior art has the following defects or problems: during the welding process of the existing welded pipe, the back side of the weld of the welded pipe is exposed to the air and is easily oxidized by oxygen, thereby generating defects such as oxides or pores. These defects may cause the weld strength of the welded pipe to decrease and increase the risk of leakage or breakage of the welded pipe. Therefore, a back side protection mechanism for the welded pipe is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a back side protection mechanism for a welded pipe to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a back protection mechanism for a welded pipe, comprising a pipe body, a protective main beam and a protective copper drag cover are arranged in the pipe body, an active drive shell and a driven drive shell are arranged at both ends of the pipe body, a sliding mechanism is arranged on the protective copper drag cover, a first rotating rod and a driving gear are arranged in the active drive shell, a second rotating rod and a driven gear are arranged in the driven drive shell, a plurality of groups of air outlets are opened on one side of the protective copper drag cover, a fixing pipe is arranged at one end of the protective copper drag cover, a reducer is arranged at one side of the active drive shell, a mounting plate is arranged on the pipe body, and a connecting block is arranged at one end of the driven drive shell;

[0006] The sliding mechanism includes a slide plate, a pulley, a connecting rod and a connecting port. A slide plate is arranged on one side of the protective copper drag cover, pulleys are arranged at both ends of the slide plate, a connecting rod is arranged on the protective copper drag cover, and connecting ports are opened at both ends of one side of the protective copper drag cover.

[0007] As an optimal technical solution of the utility model, the active drive shell and the driven drive shell are respectively installed at the two ends of the protective main beam, the connecting block is installed at one end of the driven drive shell and is attached to one end of the tube body, and the mounting plate is fixedly installed on one side of the tube body.

[0008] As a preferred technical solution of the utility model, four groups of connecting rods are installed between the protective copper drag cover and the slide plate, and there is a certain gap between one side of the protective copper drag cover and one side of the slide plate.

[0009] As a preferred technical solution of the utility model, one end of the fixed pipe is fixed and connected to one end of the protective copper drag cover, and the pulley is attached to one side of the protective main beam.

[0010] As a preferred technical solution of the utility model, the two ends of the first rotating rod are respectively rotatably mounted on both sides of the inner wall of the active driving shell, the driving gear is fixedly mounted on the first rotating rod, the reducer is fixedly mounted on one side of the active driving shell and the output end is fixedly connected to one end of the first rotating rod.

[0011] As a preferred technical solution of the utility model, the two ends of the second rotating rod are rotatably mounted on both sides of the inner wall of the driven driving shell, the driven gear is fixedly mounted on the second rotating rod, and the driving gear corresponds to the driven gear in position.

[0012] As a preferred technical solution of the utility model, the driving gear and the driven gear are driven and connected by a chain, and the two ends of the chain respectively pass through the connection port, the gap formed between the protective copper drag cover and the slide plate, and there is a connection between the reducer and the output end of the external motor.

[0013] Compared with the prior art, the utility model provides a back protection mechanism for a welded pipe, which has the following beneficial effects:

[0014] The back side protection mechanism for a welded pipe is provided with a protection main beam, a protection copper drag cover, an active drive shell, a driven drive shell, a sliding mechanism, an air outlet, and a fixed pipe. An external motor drives the output end of a reducer to rotate, and finally drives the slow movement of the protection copper drag cover. The protection copper drag cover can be moved to different positions in the pipe body and then the protection gas is released through the air outlet. The protection gas is filled in different positions in the pipe body. After the pipe body is filled with the protection gas, it is not easy for external oxygen to enter the pipe body so that the back side of the weld seam of the welded pipe is oxidized. Moreover, the operator can move the protection copper drag cover to the corresponding position according to the back side position of the weld seam of the welded pipe, and the back side of the weld seam is centrally filled with the protection gas, thereby improving the protection effect of the protection gas on the back side of the weld seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0017] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at B;

[0018] Figure 4 For this utility model Figure 1 A schematic diagram of the enlarged structure at C;

[0019] Figure 5 This is a schematic diagram of the active drive housing structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the main beam protected after the pipe body of the utility model is removed;

[0021] Figure 7 It is a schematic diagram of the specific structure of the sliding mechanism of the utility model.

[0022] In the figure: 1. pipe body; 2. protective main beam; 3. protective copper drag cover; 4. active drive shell; 5. driven drive shell; 6. sliding mechanism; 601. slide plate; 602. pulley; 603. connecting rod; 604. connecting port; 7. first rotating rod; 8. driving gear; 9. second rotating rod; 10. driven gear; 11. air outlet; 12. fixing pipe; 13. reducer; 14. mounting plate; 15. connecting block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-7 In this embodiment: a back protection mechanism for a welding pipe comprises a pipe body 1, a protection main beam 2 and a protection copper drag cover 3 are arranged in the pipe body 1, the protection copper drag cover 3 can facilitate the transportation of the protection gas, an active drive shell 4 and a driven drive shell 5 are arranged at both ends of the pipe body 1, a sliding mechanism 6 is arranged on the protection copper drag cover 3, the sliding mechanism 6 can facilitate the sliding of the protection copper drag cover 3, a first rotating rod 7 and a driving gear 8 are arranged in the active drive shell 4, a second rotating rod 9 and a driven gear 10 are arranged in the driven drive shell 5, a plurality of groups of air outlets 11 are opened on one side of the protection copper drag cover 3, the air outlets 11 can facilitate the slow dissipation of the protection gas inside the protection copper drag cover 3, a fixing pipe 12 is arranged at one end of the protection copper drag cover 3, a reducer 13 is arranged at one side of the active drive shell 4, a mounting plate 14 is arranged on the pipe body 1, the mounting plate 14 can facilitate the installation of the pipe body 1, and a connecting block 15 is arranged at one end of the driven drive shell 5;

[0025] The sliding mechanism 6 includes a slide plate 601, a pulley 602, a connecting rod 603 and a connecting port 604. The slide plate 601 is arranged on one side of the protective copper drag cover 3, and pulleys 602 are arranged at both ends of the slide plate 601. The slide plate 601 combined with the pulley 602 can facilitate the sliding of the protective copper drag cover 3. The protective copper drag cover 3 is provided with a connecting rod 603, and connecting ports 604 are opened at both ends of one side of the protective copper drag cover 3. The connecting port 604 can facilitate the chain to pass through the protective copper drag cover 3.

[0026] In this embodiment, the active drive housing 4 and the driven drive housing 5 are respectively installed at both ends of the protective main beam 2, the connecting block 15 is installed at one end of the driven drive housing 5 and is attached to one end of the tube body 1, and the mounting plate 14 is fixedly installed on one side of the tube body 1;

[0027] Specifically, the protective main beam 2 can conveniently protect the sliding of the copper drag cover 3 and can provide support for the pipe body 1;

[0028] In this embodiment, four groups of connecting rods 603 are installed between the protective copper drag cover 3 and the slide plate 601, and there is a certain gap between one side of the protective copper drag cover 3 and one side of the slide plate 601;

[0029] Specifically, the connecting rod 603 can facilitate the connection between the slide plate 601 and the protective copper drag cover 3;

[0030] In this embodiment, one end of the fixed pipe 12 is fixed and connected to one end of the protective copper drag cover 3, and the pulley 602 is attached to one side of the protective main beam 2;

[0031] Specifically, the protective gas can be conveniently transported into the protective copper drag cover 3 through the fixed pipe 12;

[0032] In this embodiment, the two ends of the first rotating rod 7 are rotatably mounted on the inner wall of the active driving shell 4, the driving gear 8 is fixedly mounted on the first rotating rod 7, the reducer 13 is fixedly mounted on one side of the active driving shell 4 and the output end is fixedly connected to one end of the first rotating rod 7;

[0033] Specifically, the reducer 13 can drive the driving gear 8 to rotate after being connected to the external motor;

[0034] In this embodiment, the two ends of the second rotating rod 9 are rotatably mounted on the inner wall of the driven driving housing 5, and the driven gear 10 is fixedly mounted on the second rotating rod 9. The driving gear 8 and the driven gear 10 are located in corresponding positions.

[0035] Specifically, the second rotating rod 9 can facilitate the installation of the driven gear 10;

[0036] In this embodiment, the driving gear 8 and the driven gear 10 are connected by a chain, and the two ends of the chain pass through the connection port 604, the gap formed between the protective copper drag cover 3 and the slide plate 601, and there is a connection between the reducer 13 and the output end of the external motor;

[0037] Specifically, the rotation of the driving gear 8 can drive the movement of the chain and the rotation of the driven gear 10 .

[0038] The working principle and use process of the utility model are as follows: the shielding gas (argon) is transported into the shielding copper hood 3 through the fixed pipe 12, and the external motor drives the output end of the reducer 13 to rotate, thereby driving the driving gear 8 to rotate. The rotation of the driving gear 8 can drive the movement of the chain and the rotation of the driven gear 10. There is contact between the chain and the shielding copper hood 3, which can drive the slow movement of the shielding copper hood 3, thereby enabling the shielding copper hood 3 to move to different positions in the tube body 1. The shielding gas in the shielding copper hood 3 will be dispersed through the air outlet 11, thereby enabling the shielding gas to be filled into different positions in the tube body 1. After the shielding gas is filled into the tube body 1, it is not easy for external oxygen to enter the tube body 1, thereby causing the back side of the weld seam of the welded pipe to be oxidized. Moreover, the operator can move the shielding copper hood 3 to the corresponding position according to the back side position of the weld seam of the welded pipe, and centrally fill the back side of the weld seam with shielding gas, thereby improving the protective effect of the shielding gas on the back side of the weld seam.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A back protection mechanism for a welded pipe, comprising a pipe body (1), characterized in that: The tube body (1) is provided with a protective main beam (2) and a protective copper drag cover (3), and the two ends of the tube body (1) are respectively provided with an active drive shell (4) and a passive drive shell (5), and the protective copper drag cover (3) is provided with a sliding mechanism (6), and the active drive shell (4) is provided with a first rotating rod (7) and a driving gear (8), and the passive drive shell (5) is provided with a second rotating rod (9) and a passive gear (10), and one side of the protective copper drag cover (3) is provided with a plurality of groups of air outlet holes (11), and one end of the protective copper drag cover (3) is provided with a fixing pipe (12), and one side of the active drive shell (4) is provided with a reducer (13), and a mounting plate (14) is provided on the tube body (1), and one end of the passive drive shell (5) is provided with a connecting block (15); The sliding mechanism (6) comprises a slide plate (601), a pulley (602), a connecting rod (603) and a connecting port (604); the slide plate (601) is arranged on one side of the protective copper drag cover (3); pulleys (602) are arranged at both ends of the slide plate (601); the connecting rod (603) is arranged on the protective copper drag cover (3); and connecting ports (604) are opened at both ends of one side of the protective copper drag cover (3).

2. A back protection mechanism for a welded pipe according to claim 1, characterized in that: The active drive housing (4) and the passive drive housing (5) are respectively mounted on the two ends of the protective main beam (2); the connecting block (15) is mounted on one end of the passive drive housing (5) and is in contact with one end of the tube body (1); and the mounting plate (14) is fixedly mounted on one side of the tube body (1).

3. A back protection mechanism for a welded pipe according to claim 1, characterized in that: Four groups of connecting rods (603) are installed between the protective copper drag cover (3) and the slide plate (601), and a certain gap exists between one side of the protective copper drag cover (3) and one side of the slide plate (601).

4. A back side protection mechanism for a welded pipe according to claim 1, characterized in that: One end of the fixed pipe (12) is fixed to and communicated with one end of the protective copper drag cover (3), and the pulley (602) is attached to one side of the protective main beam (2).

5. The back side protection mechanism for a welded pipe according to claim 1, characterized in that: The two ends of the first rotating rod (7) are respectively rotatably mounted on the two sides of the inner wall of the active driving shell (4), the active gear (8) is fixedly mounted on the first rotating rod (7), and the reducer (13) is fixedly mounted on one side of the active driving shell (4) and the output end is fixedly connected to one end of the first rotating rod (7).

6. A back side protection mechanism for a welded pipe according to claim 1, characterized in that: The two ends of the second rotating rod (9) are rotatably mounted on both sides of the inner wall of the driven driving housing (5), the driven gear (10) is fixedly mounted on the second rotating rod (9), and the driving gear (8) and the driven gear (10) are positioned correspondingly.

7. The back side protection mechanism for a welded pipe according to claim 1, characterized in that: The driving gear (8) and the driven gear (10) are connected to each other by a chain, and the two ends of the chain respectively pass through the connection port (604), the gap formed between the protective copper drag cover (3) and the slide plate (601), and the reducer (13) is connected to the output end of the external motor.