A girth automatic welding machine track drive mechanism

Abstract

The utility model relates to a kind of annular slit automatic welding machine track type drive mechanism, including herringbone sleeve plate and three U-shaped plates, the inside of U-shaped plate is rotatably installed with driving wheel and driven wheel, the outer surface of driving wheel and driven wheel is jointly meshed with track, the outer surface of U-shaped plate is installed with plugboard, plugboard is installed with herringbone sleeve plate inside by adjusting component, the outer surface of herringbone sleeve plate is provided with first drive component, and first drive component is transmission cooperation with three groups of adjusting components;The outer surface of driving wheel is installed with connecting shaft. Through the setting of second drive component, three driving wheels can be driven to rotate simultaneously, and then three tracks can be driven to rotate simultaneously, the purpose of walking in pipeline can be realized, and the contact surface of track and pipeline inner wall is large, and using the stability of triangle, it can be ensured that the device can walk stably in pipeline, thereby the accuracy of automatic welding is improved, and welding quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically to a tracked drive mechanism for an automatic circumferential welder. Background Technology

[0002] Pipeline welding refers to the process of connecting two or more pipes, pipe fittings, valves, etc. into a whole through welding technology, for transporting gas, liquid, or fluids containing solid particles. It is widely used in industries such as petroleum, chemical, natural gas, shipbuilding, and power, and requires the weld to have high strength and good sealing performance.

[0003] Currently, when performing circumferential welding on the inner wall of a pipeline, the narrow space prevents personnel from entering. Therefore, a walking device is needed to drive the automatic welding machine into the pipeline. However, the existing walking device has poor stability, which directly restricts the accuracy of automatic welding and thus has an adverse effect on the welding quality. Utility Model Content

[0004] The purpose of this invention is to provide a tracked drive mechanism for an automatic circumferential welder, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A tracked drive mechanism for an automatic circumferential welder includes a herringbone plate and three U-shaped plates. A drive wheel and a driven wheel are rotatably mounted on the inner side of each U-shaped plate. A track is fitted onto the outer surfaces of the drive and driven wheels. An insert plate is mounted on the outer surface of each U-shaped plate and is installed within the herringbone plate via an adjusting assembly. A first drive assembly is disposed on the outer surface of the herringbone plate, and the first drive assembly is in transmission cooperation with the three adjusting assemblies. A connecting shaft is mounted on the outer surface of the drive wheel, and the end of the connecting shaft extends to the outer side of the U-shaped plate and is fitted with a bevel gear A. A second drive assembly capable of simultaneously driving the three drive wheels is disposed on the outer surface of the herringbone plate.

[0007] Furthermore, the adjustment assembly includes two fixing blocks mounted on the outer surface of the herringbone sleeve plate, a threaded rod rotatably mounted between the two fixing blocks, a nut mounted on the outer surface of the threaded rod, a connecting plate mounted on the outer surface of the nut, and the end of the connecting plate connected to the insert plate.

[0008] Furthermore, the first drive assembly includes a motor A mounted on the outer surface of the herringbone sleeve plate, a bevel gear B mounted on the end of the output shaft of motor A, and bevel gears C mounted on the ends of the three threaded rods, with bevel gears C meshing with bevel gears B.

[0009] Furthermore, the second drive assembly includes a mounting plate installed on the outer surface of the herringbone sleeve. A motor B is mounted on the outer surface of the mounting plate, and a bevel gear D is mounted on the end of the output shaft of the motor B. Three rotating shafts are mounted coaxially and at equal angles on the surface of the mounting plate. A bevel gear E is mounted on one end of each rotating shaft, and the bevel gear E meshes with the bevel gear D. A worm is mounted on the other end of each rotating shaft, and a worm wheel meshes with the outer surface of the worm. A telescopic component is mounted on the outer surface of the worm wheel, and a bevel gear F is mounted on the end of the telescopic component, and the bevel gear F meshes with the bevel gear A.

[0010] Furthermore, the telescopic component includes a sleeve and an adjusting rod. The adjusting rod is inserted into the sleeve, and a limit block is installed at the end of the adjusting rod located inside the sleeve. The limit block is slidably connected to the inner wall of the sleeve. The other end of the adjusting rod is connected to the bevel gear F.

[0011] Furthermore, a bearing A is installed on the outer surface of the adjusting rod, a connecting rod A is installed on the outer surface of the bearing A, and the end of the connecting rod A is connected to the insert plate. A bearing B is installed on the outer surface of the sleeve, a connecting rod B is installed on the outer surface of the bearing B, and the end of the connecting rod B is connected to the herringbone sleeve plate.

[0012] Furthermore, the outer surface of the herringbone sleeve plate is provided with a through groove, and the end of the connecting plate passes through the through groove to connect with the insert plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0014] 1. By setting the second drive component, this utility model can simultaneously drive three drive wheels to rotate, which in turn can simultaneously drive three tracks to rotate, enabling it to move inside the pipeline. The contact area between the tracks and the inner wall of the pipeline is large, and by utilizing the stability of a triangle, it can ensure that the device can move stably inside the pipeline, thereby improving the accuracy of automatic welding and improving the welding quality.

[0015] 2. By adjusting the transmission cooperation between the adjustment component and the first drive component, this utility model can simultaneously adjust the extension length of the three insert plates within the herringbone sleeve, thus achieving the purpose of simultaneously adjusting the three tracks. This makes it suitable for use with pipes of different inner diameters and ensures the coaxiality of the device with the pipe, thereby guaranteeing the welding quality. Attached Figure Description

[0016] Figure 1 This is one of the three-dimensional schematic diagrams of the overall structure of this utility model;

[0017] Figure 2 This is the second three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged diagram of A in the middle;

[0019] Figure 4 This is a partial structural schematic diagram of the present invention;

[0020] Figure 5 This is a schematic diagram of the regional structure of the mounting plate in this utility model;

[0021] Figure 6 This is a schematic diagram of the telescopic component in this utility model.

[0022] In the diagram: 100, Herringbone plate; 101, U-shaped plate; 102, drive wheel; 103, driven wheel; 104, track; 105, insert plate; 106, connecting shaft; 107, bevel gear A; 200, adjusting assembly; 201, fixing block; 202, threaded rod; 203, nut; 204, connecting plate; 300, first drive assembly; 301, motor A; 302, bevel gear B; 303, bevel gear C; 40 0. Second drive assembly; 401. Mounting plate; 402. Motor B; 403. Bevel gear D; 404. Bevel gear E; 405. Shaft; 406. Worm gear; 407. Worm wheel; 408. Telescopic component; 4081. Sleeve; 4082. Adjusting rod; 4083. Limiting block; 409. Bevel gear F; 500. Bearing A; 501. Connecting rod A; 502. Bearing B; 503. Connecting rod B; 600. Through groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0026] Please see Figures 1-6 This utility model provides a tracked drive mechanism for an automatic circumferential welder, comprising a herringbone-shaped sleeve plate 100 and three U-shaped plates 101. A drive wheel 102 and a driven wheel 103 are rotatably mounted on the inner side of each U-shaped plate 101. A track 104 is fitted onto the outer surfaces of the drive wheel 102 and the driven wheel 103. An insert plate 105 is mounted on the outer surface of each U-shaped plate 101 and is installed inside the herringbone-shaped sleeve plate 100 via an adjusting assembly 200. A first drive assembly 300 is provided on the outer surface of the herringbone-shaped sleeve plate 100, and the first drive assembly 300 is in transmission cooperation with the three adjusting assemblies 200. A connecting shaft 106 is mounted on the outer surface of the drive wheel 102, and the end of the connecting shaft 106 extends to the outer side of the U-shaped plate 101 and is fitted with a bevel gear A107. A second drive assembly 400 capable of simultaneously driving the three drive wheels 102 is provided on the outer surface of the herringbone-shaped sleeve plate 100.

[0027] In use, the automatic welding machine is first installed on this device, and then the device is placed inside the pipe. Next, by adjusting the transmission of the component 200 and the first drive component 300, the three tracks 104 are driven to extend outward simultaneously and abut against the inner wall of the pipe to achieve stable support. Then, the second drive component 400 drives the three drive wheels 102 to rotate simultaneously, thereby driving the three tracks 104 to rotate simultaneously. This allows the device to drive the automatic welding machine to move stably inside the pipe. Because the contact area between the tracks 104 and the inner wall of the pipe is large, and by utilizing the stability of a triangle, the device can be ensured to move stably inside the pipe, thereby improving the accuracy of automatic welding and improving the welding quality.

[0028] Preferably, the adjusting assembly 200 includes two fixing blocks 201 mounted on the outer surface of the herringbone sleeve 100, a threaded rod 202 rotatably mounted between the two fixing blocks 201, a nut 203 mounted on the outer surface of the threaded rod 202, a connecting plate 204 mounted on the outer surface of the nut 203, and the end of the connecting plate 204 connected to the insert plate 105.

[0029] When the threaded rod 202 is rotated, the nut 203 can be moved along the length of the threaded rod 202 under the drive of the threaded connection, and the connecting plate 204 is notified to drive the insert plate 105 to extend and retract within the herringbone sleeve 100, thereby achieving the purpose of adjusting the position of the track 104.

[0030] Preferably, the first drive assembly 300 includes a motor A301 mounted on the outer surface of the herringbone sleeve 100, a bevel gear B302 mounted on the end of the output shaft of the motor A301, and bevel gears C303 mounted on the ends of the three threaded rods 202, and the bevel gears C303 meshing with the bevel gears B302.

[0031] When motor A301 is started, its output shaft drives bevel gear B302 to rotate. Since bevel gear B302 is simultaneously engaged with three bevel gears C303, it simultaneously drives three threaded rods 202 to rotate, thereby achieving the purpose of simultaneously adjusting the three tracks 104.

[0032] Preferably, the second drive assembly 400 includes a mounting plate 401 mounted on the outer surface of the herringbone sleeve 100. A motor B402 is mounted on the outer surface of the mounting plate 401. A bevel gear D403 is mounted at the end of the output shaft of the motor B402. Three rotating shafts 405 are mounted coaxially and at equal angles on the surface of the mounting plate 401. A bevel gear E404 is mounted at one end of the rotating shaft 405 and meshes with the bevel gear D403. A worm gear 406 is mounted at the other end of the rotating shaft 405. A worm wheel 407 is meshed with the outer surface of the worm gear 406. A telescopic member 408 is mounted on the outer surface of the worm wheel 407. A bevel gear F409 is mounted at the end of the telescopic member 408 and meshes with the bevel gear A107.

[0033] When motor B402 is started, its output shaft drives bevel gear D403 to rotate. Since bevel gear D403 is simultaneously engaged with three bevel gears E404, it can simultaneously drive three worm gears 406 to rotate. The worm gears 406 are engaged with worm wheels 407, thus simultaneously driving three telescopic components 408 to rotate. The telescopic components 408 drive bevel gear F409 to rotate. Since bevel gear F409 is engaged with bevel gear A107, the purpose of simultaneously driving three drive wheels 102 to rotate is achieved. Furthermore, through the telescopic nature of the telescopic components 408, the purpose of driving three drive wheels 102 to rotate can still be achieved after the position of track 104 is adjusted.

[0034] Preferably, the telescopic component 408 includes a sleeve 4081 and an adjusting rod 4082. The adjusting rod 4082 is inserted into the sleeve 4081. A limiting block 4083 is installed at the end of the adjusting rod 4082 located inside the sleeve 4081, and the limiting block 4083 is slidably connected to the inner wall of the sleeve 4081. The other end of the adjusting rod 4082 is connected to the bevel gear F409.

[0035] Since the limiting block 4083 is slidably connected to the inner wall of the sleeve 4081, when the sleeve 4081 rotates, it can drive the adjusting rod 4082 to rotate at the same time, thus achieving the purpose of transmission. Furthermore, the adjusting rod 4082 can extend and retract within the sleeve 4081, thus satisfying the purpose of driving the three drive wheels 102 to rotate even after the track 104 position is adjusted.

[0036] Preferably, a bearing A500 is mounted on the outer surface of the adjusting rod 4082, a connecting rod A501 is mounted on the outer surface of the bearing A500, the end of the connecting rod A501 is connected to the insert plate 105, a bearing B502 is mounted on the outer surface of the sleeve 4081, a connecting rod B503 is mounted on the outer surface of the bearing B502, and the end of the connecting rod B503 is connected to the herringbone sleeve plate 100.

[0037] By setting bearing B502 and connecting rod B503, the position of sleeve 4081 can be fixed. By setting bearing A500 and connecting rod A501, adjusting rod 4082 can be fixed together with insert plate 105, so that it can extend and retract with insert plate 105, ensuring that bevel gear F409 can always be in mesh with bevel gear A107.

[0038] Preferably, the outer surface of the herringbone sleeve 100 is provided with a through groove 600, and the end of the connecting plate 204 passes through the through groove 600 and is connected to the insert plate 105.

[0039] The through slot 600 provides a limiting function to ensure that the insert plate 105 cannot be pulled out from the herringbone sleeve 100.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tracked drive mechanism for an automatic circumferential welder, comprising a herringbone plate (100) and three U-shaped plates (101), characterized in that: The inner side of the U-shaped plate (101) is rotatably mounted with a drive wheel (102) and a driven wheel (103). The outer surfaces of the drive wheel (102) and the driven wheel (103) are meshed together with a track (104). The outer surface of the U-shaped plate (101) is mounted with an insert plate (105). The insert plate (105) is installed inside the herringbone sleeve plate (100) through an adjustment assembly (200). The outer surface of the herringbone sleeve plate (100) is provided with a first drive assembly (300). The first drive assembly (300) is in transmission cooperation with three sets of adjustment assemblies (200). A connecting shaft (106) is mounted on the outer surface of the drive wheel (102). The end of the connecting shaft (106) extends through to the outside of the U-shaped plate (101) and is equipped with a bevel gear A (107). A second drive assembly (400) capable of simultaneously driving the three drive wheels (102) to rotate is provided on the outer surface of the herringbone sleeve plate (100).

2. The tracked drive mechanism for an automatic circumferential welder according to claim 1, characterized in that: The adjustment assembly (200) includes two fixing blocks (201) installed on the outer surface of the herringbone sleeve (100), a threaded rod (202) is rotatably installed between the two fixing blocks (201), a nut (203) is installed on the outer surface of the threaded rod (202), a connecting plate (204) is installed on the outer surface of the nut (203), and the end of the connecting plate (204) is connected to the insert plate (105).

3. The tracked drive mechanism for an automatic circumferential welder according to claim 2, characterized in that: The first drive assembly (300) includes a motor A (301) mounted on the outer surface of the herringbone sleeve (100). A bevel gear B (302) is mounted on the end of the output shaft of the motor A (301). A bevel gear C (303) is mounted on the end of each of the three threaded rods (202), and the bevel gear C (303) meshes with the bevel gear B (302).

4. The tracked drive mechanism for an automatic circumferential welder according to claim 2, characterized in that: The second drive assembly (400) includes a mounting plate (401) mounted on the outer surface of the herringbone sleeve (100). A motor B (402) is mounted on the outer surface of the mounting plate (401). A bevel gear D (403) is mounted at the end of the output shaft of the motor B (402). Three rotating shafts (405) are mounted coaxially and at equal angles on the surface of the mounting plate (401). A bevel gear E (404) is mounted at one end of each rotating shaft (405). The bevel gear E (404) meshes with the bevel gear D (403). A worm (406) is installed at the other end of the rotating shaft (405). A worm wheel (407) meshes with the outer surface of the worm (406). A telescopic member (408) is installed on the outer surface of the worm wheel (407). A bevel gear F (409) is installed at the end of the telescopic member (408). The bevel gear F (409) meshes with the bevel gear A (107).

5. The tracked drive mechanism for an automatic circumferential welder according to claim 4, characterized in that: The telescopic component (408) includes a sleeve (4081) and an adjusting rod (4082). The adjusting rod (4082) is inserted into the sleeve (4081). A limiting block (4083) is installed at the end of the adjusting rod (4082) located inside the sleeve (4081), and the limiting block (4083) is slidably connected to the inner wall of the sleeve (4081). The other end of the adjusting rod (4082) is connected to the bevel gear F (409).

6. The tracked drive mechanism for an automatic circumferential welder according to claim 5, characterized in that: The outer surface of the adjusting rod (4082) is fitted with a bearing A (500), and the outer surface of the bearing A (500) is fitted with a connecting rod A (501). The end of the connecting rod A (501) is connected to the insert plate (105). The outer surface of the sleeve (4081) is fitted with a bearing B (502), and the outer surface of the bearing B (502) is fitted with a connecting rod B (503). The end of the connecting rod B (503) is connected to the herringbone sleeve plate (100).

7. The tracked drive mechanism for an automatic circumferential welder according to claim 2, characterized in that: The outer surface of the herringbone sleeve (100) is provided with a through groove (600), and the end of the connecting plate (204) passes through the through groove (600) and is connected to the insert plate (105).

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