Large pipeline welding walking mechanism

By designing a large-scale pipeline welding walking mechanism, a synchronous wheel driven by a motor and an electric push rod are used to achieve stable sliding and angle adjustment of the welding torch. This solves the problems of unstable walking and inflexible adjustment of the welding torch in large-scale pipeline welding, and improves the degree of automation and installation stability.

CN224406749UActive Publication Date: 2026-06-26LIUHEFENG (TIANJIN) TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521462098.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-14
Publication Date
2026-06-26
Estimated Expiration
2035-07-14

AI Technical Summary

Technical Problem

Existing welding walking mechanisms are unstable when moving on large pipelines, the welding torch is not flexible in adjustment, and the degree of automation is not high.

Method used

A large pipeline welding walking mechanism was designed, including a welding torch, a guide rail, a drive mechanism, an adjustment mechanism, and a disassembly and assembly mechanism. The synchronous wheel driven by the motor drives the lead screw slide to slide, the electric push rod adjusts the angle and position of the welding torch, and the insertion block and locking block realize the stable installation of the welding torch.

Benefits of technology

It enables stable movement and flexible welding torch adjustment during the welding process of large pipelines, improving the degree of welding automation and installation stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to pipeline welding equipment structure technology, concretely relates to a large -scale pipeline welding walking mechanism, including welding torch and two guide rails, the outside of guide rail is provided with drive mechanism, adjusting mechanism and dismounting mechanism, the drive mechanism includes motor, pivot, synchronous wheel, synchronous belt, screw rod and slide, through the drive mechanism that sets, make motor drive two slide along the inner cavity trajectory of two guide rails and slide, thereby the two slide of sliding state drive the welding torch of installation state and carry out displacement, through the adjusting mechanism that sets, make first electric push rod drive pivot and drive the welding torch of installation state and carry out rotation, thereby conveniently adjust the welding torch angle position of installation state, through the dismounting mechanism that sets, the position of lock block is limited to T type block to the block that engages, and then the installation of welding torch is completed, through this mechanical structure, convenient for the dismounting installation of welding torch, and the stability of installation is higher.
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Description

Technical Field

[0001] This utility model relates to the structural technology of pipeline welding equipment, specifically to a large pipeline welding traveling mechanism. Background Technology

[0002] The pipeline welding traveling mechanism is a special equipment used for automated circumferential welding on pipelines. It can automatically travel along the outer wall of the pipeline and drive the welding torch to complete continuous and stable welding operations.

[0003] Existing welding walking mechanisms are mostly suitable for small or medium-sized pipelines. For large pipelines, there are problems such as unstable walking, inflexible adjustment of welding torch, and low degree of automation. Therefore, there is an urgent need for a large pipeline welding walking mechanism to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a large-scale pipeline welding walking mechanism to overcome the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A large pipe welding traveling mechanism includes a welding torch and two guide rails, with a driving mechanism, an adjustment mechanism and a disassembly mechanism provided on the outer side of the guide rails.

[0007] The drive mechanism includes a motor, a rotating shaft, a synchronous pulley, a synchronous belt, a lead screw, and a slide.

[0008] The motor is mounted on the outside of one of the guide rails, the rotating shaft is rotatably connected to the surface of the motor, the synchronous pulley is fixedly mounted on the outer wall of the rotating shaft, the two synchronous pulleys are connected by the synchronous drive, the lead screw is rotatably mounted in the inner cavity of the guide rail, and the slide block is slidably connected to the inner cavity of the guide rail.

[0009] One of the rotating shafts is fixedly connected to the end of the output shaft of the motor, and the output shaft of the motor in the energized state is used to drive the rotating shaft to rotate.

[0010] The rotating shaft is fixedly connected to the lead screw, and the lead screw is connected to the slide block through a lead screw seat.

[0011] The outer sides of the two synchronous pulleys mesh with the tooth grooves on the inner side of the synchronous belt, and the two rotating shafts drive the two lead screws to rotate synchronously.

[0012] The adjustment mechanism includes a connecting frame, a bracket, a rotating rod, a first electric push rod, a rack and a gear;

[0013] The connecting frame is fixedly connected to the top of the slide block, the bracket is fixedly connected to the top of the connecting frame, the rotating rod is rotatably connected to the inner side of the bracket, the first electric push rod is fixedly installed on the outer side of the connecting frame, the rack is fixedly assembled to the output end of the first electric push rod, and the gear is fixedly assembled to the outer wall of the rotating rod.

[0014] The rack meshes with the gear, and the meshing state of the rack and gear is used to drive the rotating rod to rotate.

[0015] The disassembly and assembly mechanism includes an adjustment frame, a T-slot, a T-block, a locking block, a plug block, a mounting frame, a second electric push rod, a moving frame, a guide groove, and a sliding rod;

[0016] The adjusting frame is fixedly connected to the surface of the rotating rod. The T-slot is formed inside the adjusting frame. The T-block is slidably connected inside the T-slot. The locking block is fixedly connected to one side of the T-block. The insert block slides radially inside the adjusting frame. The mounting frame is fixedly connected to the top of the T-block. The second electric push rod is fixedly installed at the bottom of the adjusting frame. The moving frame is axially slidably connected to the bottom of the adjusting frame. The guide groove is formed on the surface of the moving frame. The slide rod is fixedly connected to the outside of the insert block.

[0017] The movable frame is fixedly connected to the output end of the second electric push rod, and the welding gun is disposed on one side of the mounting frame.

[0018] The locking block is used to allow the insert block to be inserted into it, and the locking block and the insert block in the engaged state are used to install the welding gun.

[0019] The slide rod is slidably connected to the inside of the guide groove, and the inner wall of the guide groove matches the outer wall of the slide rod.

[0020] In the above technical solution, the present invention provides a large pipeline welding walking mechanism. Through a driving mechanism, the motor drives two sliding blocks to slide along the inner cavity trajectory of two guide rails, thereby causing the two sliding blocks to move the welding torch in the installation state. Through an adjustment mechanism, the first electric push rod drives the rotating rod to rotate the welding torch in the installation state, thereby facilitating the adjustment of the angle and position of the welding torch in the installation state. Through a disassembly and assembly mechanism, the locking block and the plug in the engagement state limit the position of the T-block, thereby completing the installation of the welding torch. This mechanical structure facilitates the disassembly and assembly of the welding torch, and the installation stability is high. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the main structure of an embodiment of a large pipeline welding and walking mechanism of the present invention.

[0023] Figure 2 This is a schematic diagram of the drive mechanism structure provided for an embodiment of a large pipeline welding and walking mechanism of this utility model.

[0024] Figure 3 This is a schematic diagram of the adjustment mechanism structure provided for an embodiment of a large pipeline welding and walking mechanism of this utility model.

[0025] Figure 4 This utility model provides an embodiment of a large pipeline welding walking mechanism. Figure 3 A schematic diagram of structure A in the diagram.

[0026] Figure 5 This is a schematic diagram of the disassembly and assembly mechanism provided for an embodiment of a large pipeline welding and walking mechanism of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Guide rail; 2. Drive mechanism; 201. Motor; 202. Rotating shaft; 203. Synchronous pulley; 204. Synchronous belt; 205. Lead screw; 206. Slide block; 3. Adjustment mechanism; 301. Connecting frame; 302. Bracket; 303. Rotating rod; 304. First electric push rod; 305. Rack; 306. Gear; 4. Assembly / disassembly mechanism; 401. Adjustment frame; 402. T-slot; 403. T-block; 404. Locking block; 405. Insert block; 406. Mounting frame; 407. Second electric push rod; 408. Moving frame; 409. Guide groove; 4010. Slide rod; 5. Welding torch. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-5 As shown in the figure, a large pipe welding walking mechanism provided by this utility model embodiment includes a welding torch 5 and two guide rails 1. A driving mechanism 2, an adjustment mechanism 3 and a disassembly and assembly mechanism 4 are provided on the outer side of the guide rails 1.

[0031] The drive mechanism 2 includes a motor 201, a rotating shaft 202, a synchronous pulley 203, a synchronous belt 204, a lead screw 205, and a slide block 206;

[0032] The motor 201 is mounted on the outside of a guide rail 1, the rotating shaft 202 is rotatably connected to the surface of the motor 201, the synchronous pulley 203 is fixedly mounted on the outer wall of the rotating shaft 202, the two synchronous pulleys 203 are connected by a synchronous belt 204, the lead screw 205 is rotatably mounted in the inner cavity of the guide rail 1, and the slide block 206 is slidably connected to the inner cavity of the guide rail 1.

[0033] Working principle: When installing the welding torch 5, first insert the T-block 403 and locking block 404 into the T-slot 402, so that the T-block 403 and T-slot 402 in the locked state pre-limit the welding torch 5. Then, the second electric push rod 407 is powered on and operated, so that the output end of the second electric push rod 407 in the running state drives the moving frame 408 to move. The moving frame 408 in the moving state drives the guide groove 409 to move. Since the sliding rod 4010 is slidably connected to the inside of the guide groove 409, the sliding rod 4010 slides along the inner wall trajectory of the guide groove 409. The sliding rod 4010 in the sliding state drives the insert block 405 to move upward. The rising insert block 405 inserts into the inside of the locking block 404, so that the T-block 403 in the locked state is limited, thereby completing the installation of the welding torch 5. This mechanical structure facilitates the disassembly and installation of the welding torch 5, and the installation stability is high.

[0034] When it is necessary to adjust the angle position of the welding torch 5 in the installation state, firstly, the first electric push rod 304 is powered on and operated, so that the output end of the first electric push rod 304 in the operating state drives the rack 305 to move. Since the rack 305 meshes with the gear 306, the moving rack 305 drives the gear 306 to rotate. The rotating gear 306 drives the rotating rod 303 to rotate, and the rotating rod 303 in the rotating state drives the welding torch 5 in the installation state to rotate, thereby facilitating the adjustment of the angle position of the welding torch 5 in the installation state.

[0035] When it is necessary to move the welding torch 5 in the installed state, the motor 201 is first powered on and started, so that the output shaft of the running motor 201 drives a rotating shaft 202 and a synchronous pulley 203 to rotate. Since the outer sides of the two synchronous pulleys 203 mesh with the tooth grooves on the inner side of the synchronous belt 204, the rotating synchronous pulley 203 drives the other synchronous pulley 203 to rotate through the synchronous belt 204. The rotating synchronous pulley 203 drives the other rotating shaft 202 to rotate. The two rotating shafts 202 drive the two lead screws 205 to rotate respectively. The two rotating lead screws 205 drive the two slide blocks 206 to slide along the inner cavity trajectory of the two guide rails 1. Thus, the two sliding slide blocks 206 drive the welding torch 5 in the installed state to move.

[0036] Preferably, a rotating shaft 202 is fixedly connected to the end of the output shaft of the motor 201, and the output shaft of the motor 201 in the energized state is used to drive the rotating shaft 202 to rotate.

[0037] In this specific embodiment, the motor 201 is powered on and operated, so that the output shaft of the operating motor 201 drives a rotating shaft 202 and a synchronous pulley 203 to rotate.

[0038] Preferably, the rotating shaft 202 is fixedly connected to the lead screw 205, and the lead screw 205 is connected to the slide block 206 through the lead screw seat.

[0039] In this specific embodiment, the two rotating shafts 202 in a synchronous state drive the two lead screws 205 to rotate, and the two lead screws 205 in a rotating state drive the two slide blocks 206 to slide along the inner cavity trajectory of the two guide rails 1.

[0040] Preferably, the outer sides of the two synchronous pulleys 203 mesh with the tooth grooves on the inner side of the synchronous belt 204, and the two rotating shafts 202 drive the two lead screws 205 to rotate synchronously.

[0041] In this specific embodiment, since the outer sides of the two synchronous pulleys 203 mesh with the tooth grooves on the inner side of the synchronous belt 204, one synchronous pulley 203 in the rotating state drives the other synchronous pulley 203 to rotate through the synchronous belt 204, and the other synchronous pulley 203 in the rotating state drives the other shaft 202 to rotate.

[0042] Preferably, the adjustment mechanism 3 includes a connecting frame 301, a bracket 302, a rotating rod 303, a first electric push rod 304, a rack 305, and a gear 306;

[0043] The connecting frame 301 is fixedly connected to the top of the slide block 206, the bracket 302 is fixedly connected to the top of the connecting frame 301, the rotating rod 303 is rotatably connected to the inner side of the bracket 302, the first electric push rod 304 is fixedly installed on the outer side of the connecting frame 301, the rack 305 is fixedly assembled to the output end of the first electric push rod 304, and the gear 306 is fixedly assembled to the outer wall of the rotating rod 303.

[0044] Specifically, in this embodiment, when it is necessary to adjust the angle position of the welding torch 5 in the installation state, the first electric push rod 304 is first powered on and operated, so that the output end of the first electric push rod 304 in the operating state drives the rack 305 to move. Since the rack 305 meshes with the gear 306, the moving rack 305 drives the gear 306 to rotate. The rotating gear 306 drives the rotating rod 303 to rotate, and the rotating rod 303 in the rotating state drives the welding torch 5 in the installation state to rotate, thereby facilitating the adjustment of the angle position of the welding torch 5 in the installation state.

[0045] Preferably, the rack 305 meshes with the gear 306, and the meshed rack 305 and gear 306 are used to drive the rotating rod 303 to rotate.

[0046] In this specific embodiment, since the rack 305 meshes with the gear 306, the moving rack 305 drives the gear 306 to rotate, and the rotating gear 306 drives the rotating rod 303 to rotate.

[0047] Preferably, the disassembly and assembly mechanism 4 includes an adjustment frame 401, a T-slot 402, a T-block 403, a locking block 404, an insert block 405, a mounting frame 406, a second electric push rod 407, a moving frame 408, a guide groove 409, and a slide rod 4010.

[0048] The adjusting frame 401 is fixedly connected to the surface of the rotating rod 303. The T-slot 402 is opened inside the adjusting frame 401. The T-block 403 is slidably connected inside the T-slot 402. The locking block 404 is fixedly connected to one side of the T-block 403. The insert block 405 slides radially inside the adjusting frame 401. The mounting frame 406 is fixedly connected to the top of the T-block 403. The second electric push rod 407 is fixedly installed at the bottom of the adjusting frame 401. The moving frame 408 is axially slidably connected to the bottom of the adjusting frame 401. The guide groove 409 is opened on the surface of the moving frame 408. The slide rod 4010 is fixedly connected to the outside of the insert block 405.

[0049] In this specific embodiment, when the welding torch 5 is installed, the T-block 403 and locking block 404 are first inserted into the T-slot 402, so that the T-block 403 and T-slot 402 in the locked state pre-limit the welding torch 5. Then, the second electric push rod 407 is powered on and operated, so that the output end of the second electric push rod 407 in the operating state drives the moving frame 408 to move. The moving frame 408 in the moving state drives the guide groove 409 to move. Since the sliding rod 4010 is slidably connected to the inside of the guide groove 409, the sliding rod 4010 slides along the inner wall trajectory of the guide groove 409. The sliding rod 4010 in the sliding state drives the insert block 405 to move upward. The rising insert block 405 inserts into the inside of the locking block 404, so that the insert block 405 in the locked state and the locking block 404 in the locked state limit the position of the T-block 403, thereby completing the installation of the welding torch 5. This mechanical structure facilitates the disassembly and installation of the welding torch 5, and the installation stability is high.

[0050] Preferably, the movable frame 408 is fixedly connected to the output end of the second electric push rod 407, and the welding torch 5 is disposed on one side of the mounting frame 406.

[0051] In this specific embodiment, by connecting the second electric push rod 407 to power, the output end of the second electric push rod 407 in operation drives the moving frame 408 to move, and the moving frame 408 in the moving state drives the guide groove 409 to move.

[0052] Preferably, the locking block 404 is used for inserting the insertion block 405 into its interior, and the locking block 404 and the insertion block 405 in the engaged state are used for installing the welding gun 5.

[0053] In this specific embodiment, the sliding rod 4010 drives the insert 405 to move upward. The insert 405 in the rising state is inserted into the lock block 404, and the insert 405 in the engaging state and the lock block 404 limit the position of the T-shaped block 403.

[0054] Preferably, the slide rod 4010 is slidably connected to the inside of the guide groove 409, and the inner wall of the guide groove 409 matches the outer wall of the slide rod 4010.

[0055] In this specific embodiment, since the slide rod 4010 is slidably connected to the inside of the guide groove 409, the slide rod 4010 slides along the inner wall trajectory of the guide groove 409, and the slide rod 4010 in the sliding state drives the insert block 405 to move upward.

[0056] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A large pipe welding traveling mechanism, characterized in that, It includes a welding torch (5) and two guide rails (1), and the outer side of the guide rails (1) is provided with a drive mechanism (2), an adjustment mechanism (3) and a disassembly mechanism (4). The drive mechanism (2) includes a motor (201), a rotating shaft (202), a synchronous pulley (203), a synchronous belt (204), a lead screw (205), and a slide (206). The motor (201) is mounted on the outside of one of the guide rails (1), the rotating shaft (202) is rotatably connected to the surface of the motor (201), the synchronous pulley (203) is fixedly mounted on the outer wall of the rotating shaft (202), the two synchronous pulleys (203) are connected by the synchronous belt (204), the lead screw (205) is rotatably mounted in the inner cavity of the guide rail (1), and the slide (206) is slidably connected to the inner cavity of the guide rail (1).

2. The large pipeline welding traveling mechanism according to claim 1, characterized in that, One of the rotating shafts (202) is fixedly connected to the end of the output shaft of the motor (201), and the output shaft of the motor (201) in the energized state is used to drive one of the rotating shafts (202) to rotate.

3. The large pipeline welding traveling mechanism according to claim 1, characterized in that, The rotating shaft (202) is fixedly connected to the lead screw (205), and the lead screw (205) is connected to the slide (206) through the lead screw seat.

4. The large pipeline welding traveling mechanism according to claim 1, characterized in that, The outer sides of the two synchronous pulleys (203) mesh with the tooth grooves on the inner side of the synchronous belt (204), and the two rotating shafts (202) in the rotating state drive the two lead screws (205) to rotate synchronously.

5. A large pipeline welding traveling mechanism according to claim 1, characterized in that, The adjustment mechanism (3) includes a connecting frame (301), a bracket (302), a rotating rod (303), a first electric push rod (304), a rack (305), and a gear (306). The connecting frame (301) is fixedly connected to the top of the slide (206), the bracket (302) is fixedly connected to the top of the connecting frame (301), the rotating rod (303) is rotatably connected to the inner side of the bracket (302), the first electric push rod (304) is fixedly installed on the outer side of the connecting frame (301), the rack (305) is fixedly assembled to the output end of the first electric push rod (304), and the gear (306) is fixedly assembled to the outer wall of the rotating rod (303).

6. A large pipeline welding traveling mechanism according to claim 5, characterized in that, The rack (305) meshes with the gear (306), and the rack (305) and the gear (306) in the meshing state are used to drive the rotating rod (303) to rotate.

7. A large pipeline welding traveling mechanism according to claim 5, characterized in that, The disassembly and assembly mechanism (4) includes an adjustment frame (401), a T-slot (402), a T-block (403), a locking block (404), an insert block (405), a mounting frame (406), a second electric push rod (407), a moving frame (408), a guide groove (409), and a slide rod (4010). The adjusting frame (401) is fixedly connected to the surface of the rotating rod (303), the T-slot (402) is opened inside the adjusting frame (401), the T-block (403) is slidably connected to the inside of the T-slot (402), the locking block (404) is fixedly connected to one side of the T-block (403), the insert block (405) slides radially inside the adjusting frame (401), the mounting frame (406) is fixedly connected to the top of the T-block (403), the second electric push rod (407) is fixedly installed at the bottom of the adjusting frame (401), the moving frame (408) is axially slidably connected to the bottom of the adjusting frame (401), the guide groove (409) is opened on the surface of the moving frame (408), and the slide rod (4010) is fixedly connected to the outside of the insert block (405).

8. A large pipeline welding traveling mechanism according to claim 7, characterized in that, The movable frame (408) is fixedly connected to the output end of the second electric push rod (407), and the welding gun (5) is disposed on one side of the mounting frame (406).

9. A large pipeline welding traveling mechanism according to claim 7, characterized in that, The locking block (404) is used for the insertion block (405) to be inserted into it, and the locking block (404) and the insertion block (405) in the engaged state are used to install the welding torch (5).

10. A large pipeline welding traveling mechanism according to claim 7, characterized in that, The slide rod (4010) is slidably connected to the inside of the guide groove (409), and the inner wall of the guide groove (409) matches the outer wall of the slide rod (4010).