Railway tunnel ventilating duct welding equipment

Abstract

Railway tunnel ventilating duct welding equipment comprises a welding mechanism supporting frame and a to-be-welded pipe, a girth welding mechanism is arranged in the middle of the welding mechanism supporting frame and conducts welding operation on a to-be-welded joint of the to-be-welded pipe, and auxiliary supporting mechanisms are arranged on the two sides of the girth welding mechanism. The auxiliary supporting mechanism positions and supports the welding mechanism supporting frame, vibration or deviation of the welding mechanism supporting frame in the welding process of the girth welding mechanism is avoided, a stable welding environment is provided for the girth welding mechanism, movement mechanisms are arranged on the two sides of the welding mechanism supporting frame, and each movement mechanism comprises an auxiliary positioning device and a multi-direction advancing device. The auxiliary positioning device is arranged on the side face of the welding mechanism supporting frame and provides positioning and supporting for the multi-direction advancing device, and the multi-direction advancing device is arranged on the side face of the auxiliary positioning device.

Description

Technical Field

[0001] The invention relates to the field of laser welding, and in particular to a railway tunnel ventilation duct welding device. Background Art

[0002] The existing patent (publication number: CN115740880A) proposes a pipe inner wall welding device, including two frames, and the two frames are equipped with a moving component for movement on the side away from each other, and two partitions are fixedly installed on the opposite side of the two frames, and each two adjacent partitions are fixedly installed with a mounting seat on the side away from the corresponding frame. However, in this device, "the rotating screw drives the vertical plate, the annular cover and the sealing ring to move along the sliding rod direction by screwing in the thread". The screw can only allow the structure of the annular cover to move linearly. During the welding construction of the railway tunnel ventilation duct, this device is difficult to effectively pass through when facing a long pipe with a curved part in the middle, affecting the convenience of use of this device. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a device which can rotate and move laterally inside the pipe to be welded. When the device moves at the bend inside the pipe to be welded, facing a place with a smaller bending radius, one of the multi-directional moving device located at the rear side and the multi-directional moving device located at the front side will always be in complete contact with the straight pipe of the pipe to be welded. The welding of railway tunnel ventilation ducts ensures the moving effect of the device at the smaller bends. Facing a place with a larger turning radius, a larger number of No. 1 driving rollers and No. 2 driving rollers can ensure the contact area with the pipe to be welded at the bend, thereby ensuring the moving effect of the device at the larger bends, so that the device can be freely moved to any position in the pipe for welding operations, thereby providing a more convenient railway tunnel ventilation duct welding equipment.

[0004] The purpose of the present invention is to be achieved through the following technical solutions: A railway tunnel ventilation duct welding device comprises a welding mechanism support frame and a pipe to be welded. A circumferential seam welding mechanism is arranged in the middle of the welding mechanism support frame, and the circumferential seam welding mechanism performs welding operation on the welding seams to be welded of the pipe to be welded. Auxiliary support mechanisms are arranged on both sides of the circumferential seam welding mechanism, and the auxiliary support mechanisms position and support the welding mechanism support frame to avoid vibration or deviation of the welding mechanism support frame during the welding process of the circumferential seam welding mechanism, and provide a stable welding environment for the circumferential seam welding mechanism. Moving mechanisms are arranged on both sides of the welding mechanism support frame, and the moving mechanisms include an auxiliary positioning device and a multi-directional moving device. The auxiliary positioning device is arranged on the side of the welding mechanism support frame, and the auxiliary positioning device provides positioning and support for the multi-directional moving device. The multi-directional moving device is on the side of the auxiliary positioning device, and the multi-directional moving device provides power for the overall movement of this device.

[0005] The circumferential seam welding mechanism includes a welding mechanism bearing ring, a circumferential welding drive gear, a circumferential welding drive motor, a laser welding head, and an auxiliary lighting lamp. The middle part of the welding mechanism support frame is provided with a welding mechanism ring mounting groove, the middle part of the welding mechanism ring mounting groove is provided with a welding mechanism bearing column, the welding mechanism bearing column is rotatably connected with the welding mechanism bearing ring, the bottom of the welding mechanism bearing ring is provided with a counterweight support column, the bottom of the counterweight support column is provided with a counterweight, the top of the welding mechanism bearing ring is provided with a welding mechanism support column, the top of the welding mechanism support column is provided with a cross positioning groove, a laser welding head is arranged on the side of the welding mechanism support column, auxiliary lighting lamps are fixedly connected on both sides of the laser welding head, and the laser welding head faces the welding mechanism support column One side has a cross positioning column, the cross positioning column is adapted to the cross positioning groove, the cross positioning column is connected to the cross positioning groove, the cross positioning column slides inside the cross positioning groove, the side of the cross positioning column has a welding hydraulic cylinder connecting plate, the welding mechanism support column is fixedly connected to the welding lifting hydraulic cylinder on the side opposite to the laser welding head, the hydraulic rod of the welding lifting hydraulic cylinder is fixedly connected to the welding hydraulic cylinder connecting plate, one side of the welding mechanism bearing ring has a ring welding driven gear, the side surface of the welding mechanism ring mounting groove has a ring welding motor groove, the ring welding drive motor is inserted into the ring welding motor groove and fixed, the transmission shaft of the ring welding drive motor is fixedly connected to the ring welding drive gear, and the ring welding drive gear is meshed with the ring welding driven gear.

[0006] The auxiliary support mechanism includes a support hydraulic cylinder, a No. 1 support block, and a No. 2 support block. The welding mechanism support frame has a support hydraulic cylinder mounting platform inside, and the surface of the welding mechanism support frame has a support frame positioning groove. The support hydraulic cylinder mounting platform and the support frame positioning groove are evenly staggered around the welding mechanism support frame. The inner side of the support hydraulic cylinder mounting platform is fixedly connected to the support hydraulic cylinder. A plurality of No. 1 support blocks and No. 2 support blocks are arranged around the side of the welding mechanism support frame. The bottom of the No. 1 support block has a No. 1 positioning rod. The hydraulic rod of the support hydraulic cylinder passes through the welding mechanism support frame and is fixedly connected to the No. 1 positioning rod. The bottom of the No. 2 support block has a No. 2 positioning rod. Position rod, No. 2 positioning rod is adapted to the support frame positioning groove, No. 2 positioning rod is connected to the support frame positioning groove, No. 2 positioning rod slides inside the support frame positioning groove, No. 1 support block has a support block positioning platform on one side, No. 1 support block has a support block positioning column on the other side, No. 2 support block has a support block positioning platform on one side, No. 2 support block has a support block positioning column on the other side, the support block positioning platform has a support block positioning groove inside, the support block positioning groove is adapted to the support block positioning column, the support block positioning grooves between adjacent No. 1 support blocks and No. 2 support blocks are connected to the support block positioning columns, and the support block positioning columns slide inside the support block positioning grooves.

[0007] The auxiliary positioning device includes a rear motion bearing platform, a traction spring, and a front motion bearing platform. The welding mechanism support frame is fixedly connected to the rear motion bearing platform on both sides. An inner bearing platform docking column is provided in the middle of the rear motion bearing platform. A spring mounting groove is provided inside the rear motion bearing platform. The spring mounting groove is evenly arranged around the inner bearing platform docking column. The traction spring is inserted into the spring mounting groove. One end of the traction spring is fixedly connected to the inside of the spring mounting groove. A front motion bearing platform is arranged on the side of the inner bearing platform docking column. An inner bearing platform docking block is provided on the side of the front motion bearing platform facing the inner bearing platform docking column. An inner bearing platform docking groove is provided inside the inner bearing platform docking block. The inner bearing platform docking groove is adapted to the inner bearing platform docking column. The inner bearing platform docking groove is connected to the inner bearing platform docking column. The inner bearing platform docking groove rotates on the outside of the inner bearing platform docking column. A spring mounting column is provided on the side of the inner bearing platform docking block. The spring mounting columns are evenly arranged around the inner bearing platform docking block. The other end of the traction spring is fixedly connected to the spring mounting column.

[0008] Beneficial effects: 1. The device of the present invention can rotate and move laterally inside the pipe to be welded. When the device moves at the bend inside the pipe to be welded, facing a place with a smaller bending radius, the multi-directional moving device located at the rear side and the multi-directional moving device located at the front side will always have one that is completely in contact with the straight pipe of the pipe to be welded, thereby ensuring the moving effect of the device at a smaller bend. When welding the ventilation duct in a railway tunnel, facing a place with a larger turning radius, a larger number of No. 1 drive rollers and No. 2 drive rollers can ensure the contact area with the pipe to be welded at the bend, thereby ensuring the moving effect of the device at a larger bend, so that the device can be freely moved to any position in the pipeline for welding operations.

[0009] 2. The present invention controls the synchronous expansion and retraction of all the No. 1 roller mounting table array groups and the No. 2 roller mounting table array groups through the spacing adjustment ring, so that the device can be placed in different types of pipes to be welded for welding operations, and the welding of railway tunnel ventilation ducts increases the scope of application of the device.

[0010] 3. One end of the traction spring of the present invention is fixedly connected to the inside of the spring installation groove, and the other end of the traction spring is fixedly connected to the spring installation column, so that when the device is not placed in the pipe to be welded, the spring installation groove can pull the multi-directional traveling device to prevent the multi-directional traveling device from falling excessively, thereby avoiding excessive falling of the multi-directional traveling device to hinder the overall placement of the device. The welding of railway tunnel ventilation ducts ensures the convenience of taking and placing the device.

[0011] 4. A counterweight is provided on one side of the bearing ring of the welding mechanism of the present invention, so that the overall center of gravity of the device is basically kept in the middle position during the movement of the device in the pipe. The welding of the railway tunnel ventilation duct ensures the stability of the device when it moves in the pipe.

[0012] 5. After the device of the present invention moves to the welding interface of the pipe to be welded, the auxiliary support mechanism expands outward and presses against the inner wall of the pipe to be welded, so that the auxiliary support mechanism provides stable support for the welding operation of the circumferential seam welding mechanism. The support has good stability and high shock resistance, and the circumferential seam welding mechanism is prevented from being affected by external vibrations and causing the weld to deviate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic structural diagram of a railway tunnel ventilation duct welding device.

[0014] Figure 2 This is a side cross-sectional view of a railway tunnel ventilation duct welding device according to the present invention.

[0015] Figure 3 The present invention Figure 2 A partial enlarged view.

[0016] Figure 4 The present invention Figure 2 Part B is a partial enlarged view.

[0017] Figure 5 It is a schematic diagram of the motion mechanism structure of the present invention.

[0018] Figure 6 It is a schematic diagram of the partial structure of the multi-directional traveling device described in the present invention.

[0019] Figure 7 This is a diagram of the installation state of the No. 1 driving roller described in the present invention.

[0020] Figure 8 This is a schematic diagram of the structure of the No. 1 drive ring described in the present invention.

[0021] Fig. 9 This is a schematic diagram of the spacing adjustment ring structure of the present invention.

[0022] Fig.10 This is a structural schematic diagram of the No. 1 roller mounting platform described in the present invention.

[0023] Fig.11 It is a schematic diagram of the structure of the front motion bearing platform described in the present invention.

[0024] Fig.12 This is a diagram showing the installation status of the welding mechanism support frame described in the present invention.

[0025] Fig.13 It is a schematic structural diagram of the circumferential seam welding mechanism described in the present invention.

[0026] Fig.14 It is a schematic diagram of the structure of the rear motion bearing platform described in the present invention.

[0027] Fig.15 This is a schematic diagram of the structure of the welding mechanism support frame described in the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below according to the accompanying drawings and embodiments: Embodiment 1: A railway tunnel ventilation duct welding device comprises a welding mechanism support frame 1 and a pipe to be welded 5. A girth welding mechanism 2 is arranged in the middle of the welding mechanism support frame 1. The girth welding mechanism 2 performs welding operation on the required welding seams of the pipe to be welded 5. Auxiliary support mechanisms 3 are arranged on both sides of the girth welding mechanism 2. The auxiliary support mechanisms 3 position and support the welding mechanism support frame 1 to prevent the welding mechanism support frame 1 from vibrating or deflecting during the welding process of the girth welding mechanism 2, and provide a stable welding environment for the girth welding mechanism 2. Moving mechanisms 4 are arranged on both sides of the welding mechanism support frame 1. The moving mechanism 4 comprises an auxiliary positioning device 401 and a multi-directional traveling device 402. The auxiliary positioning device 401 is arranged on the side of the welding mechanism support frame 1. The auxiliary positioning device 401 provides positioning and support for the multi-directional traveling device 402. The multi-directional traveling device 402 is on the side of the auxiliary positioning device 401. The multi-directional traveling device 402 provides power for the overall movement of this device.

[0029] Embodiment 2: The circumferential seam welding mechanism 2 of the present invention comprises a welding mechanism bearing ring 12, a circumferential welding driving gear 36, a circumferential welding driving motor 45, a laser welding head 47, and an auxiliary lighting lamp 48. The welding mechanism support frame 1 has a welding mechanism ring mounting groove 75 in the middle, and a welding mechanism bearing column 11 is provided in the middle of the welding mechanism ring mounting groove 75. The welding mechanism bearing column 11 is rotatably connected to the welding mechanism bearing ring 12. The welding mechanism bearing ring 12 has a counterweight support column 42 at the bottom, and a counterweight 43 at the bottom of the counterweight support column 42. The welding mechanism bearing ring 12 has a welding mechanism support column 39 at the top, and a cross positioning groove 51 is provided at the top of the welding mechanism support column 39. A laser welding head 47 is arranged on the side of the welding mechanism support column 39. Auxiliary lighting lamps 48 are fixedly connected on both sides of the laser welding head 47. The laser welding head 47 faces the welding mechanism support column 3 One side of 9 has a cross positioning column 49, the cross positioning column 49 is adapted to the cross positioning groove 51, the cross positioning column 49 is connected to the cross positioning groove 51, the cross positioning column 49 slides inside the cross positioning groove 51, the side of the cross positioning column 49 has a welding hydraulic cylinder connecting plate 46, the welding mechanism support column 39 is fixedly connected to the welding lifting hydraulic cylinder 41 on the side opposite to the laser welding head 47, the hydraulic rod of the welding lifting hydraulic cylinder 41 is fixedly connected to the welding hydraulic cylinder connecting plate 46, one side of the welding mechanism bearing ring 12 has a ring welding driven gear 73, the side surface of the welding mechanism ring mounting groove 75 has a ring welding motor groove 44, the ring welding drive motor 45 is inserted into the ring welding motor groove 44 and fixed, the transmission shaft of the ring welding drive motor 45 is fixedly connected to the ring welding drive gear 36, and the ring welding drive gear 36 is meshed with the ring welding driven gear 73.

[0030] Embodiment 3: The auxiliary support mechanism 3 of the present invention comprises a support hydraulic cylinder 32, a No. 1 support block 34, and a No. 2 support block 35. The welding mechanism support frame 1 has a support hydraulic cylinder mounting platform 31 inside, and a support frame positioning groove 33 is provided on the surface of the welding mechanism support frame 1. The support hydraulic cylinder mounting platform 31 and the support frame positioning groove 33 are evenly staggered around the welding mechanism support frame 1. The inner side of the support hydraulic cylinder mounting platform 31 is fixedly connected to the support hydraulic cylinder 32. A plurality of No. 1 support blocks 34 and No. 2 support blocks 35 are arranged around the side of the welding mechanism support frame 1. The bottom of the No. 1 support block 34 has a No. 1 positioning rod 37. The hydraulic rod of the support hydraulic cylinder 32 passes through the welding mechanism support frame 1 and is fixedly connected to the No. 1 positioning rod 37. The bottom of the No. 2 support block 35 has a No. 2 positioning rod 38. The No. 2 positioning rod 38 is adapted to the support frame positioning groove 33, the No. 2 positioning rod 38 is connected to the support frame positioning groove 33, the No. 2 positioning rod 38 slides inside the support frame positioning groove 33, one side of the No. 1 support block 34 is provided with a support block positioning platform 69, the other side of the No. 1 support block 34 is provided with a support block positioning column 72, one side of the No. 2 support block 35 is provided with a support block positioning platform 69, the other side of the No. 2 support block 35 is provided with a support block positioning column 72, the support block positioning platform 69 is provided with a support block positioning groove 71, the support block positioning groove 71 is adapted to the support block positioning column 72, the support block positioning grooves 71 between adjacent No. 1 support blocks 34 and No. 2 support blocks 35 are connected to the support block positioning columns 72, and the support block positioning columns 72 slide inside the support block positioning grooves 71. Furthermore, after the device moves to the welding interface of the pipe 5 to be welded, the supporting hydraulic cylinder 32 drives the No. 1 supporting block 34 to expand outward, and through the cooperation between the supporting block positioning groove 71 and the supporting block positioning column 72, all the No. 1 supporting blocks 34 and No. 2 supporting blocks 35 are expanded synchronously until the No. 1 supporting blocks 34 and No. 2 supporting blocks 35 are pressed against the inner wall of the pipe 5 to be welded, thereby completing the positioning of the circumferential seam welding mechanism 2. After that, the welding lifting hydraulic cylinder 41 is started to make the laser welding head 47 approach the welding interface of the pipe 5 to be welded and start welding. Synchronously, the circumferential welding driving motor 45 drives the circumferential welding driven gear 73 to rotate through the circumferential welding driving gear 36, so that the laser welding head 47 completes the circumferential seam welding of the welding interface of the pipe 5 to be welded.

[0031] It should be noted that after this device moves to the welding interface of the pipe 5 to be welded, the auxiliary support mechanism 3 expands outward and presses against the inner wall of the pipe 5 to be welded, so that the auxiliary support mechanism 3 provides stable support for the welding operation of the circumferential seam welding mechanism 2. The support has good stability and high shock resistance, which can prevent the circumferential seam welding mechanism 2 from being affected by external vibrations and causing the weld to deviate.

[0032] It should also be noted that a counterweight block 43 is provided on one side of the welding mechanism support ring 12 so that the overall center of gravity of the device is basically kept in the middle position during the movement of the device in the pipe, thereby ensuring the stability of the device when moving in the pipe.

[0033] Embodiment 4: The auxiliary positioning device 401 of the present invention comprises a rear motion bearing platform 13, a traction spring 15, and a front motion bearing platform 16. The two sides of the welding mechanism support frame 1 are fixedly connected to the rear motion bearing platform 13. The middle of the rear motion bearing platform 13 is provided with an inner bearing platform docking column 17. The rear motion bearing platform 13 has a spring installation groove 14 inside. The spring installation groove 14 is evenly arranged around the inner bearing platform docking column 17. The traction spring 15 is inserted into the spring installation groove 14. One end of the traction spring 15 is fixedly connected to the inside of the spring installation groove 14. The side of the inner bearing platform docking column 17 is provided with a front motion bearing platform 1 6. The front motion bearing platform 16 has an inner bearing platform docking block 18 on the side facing the inner bearing platform docking column 17. The inner bearing platform docking block 18 has an inner bearing platform docking groove 74 inside. The inner bearing platform docking groove 74 is adapted to the inner bearing platform docking column 17. The inner bearing platform docking groove 74 is connected to the inner bearing platform docking column 17. The inner bearing platform docking groove 74 rotates outside the inner bearing platform docking column 17. The inner bearing platform docking groove 74 has a spring mounting column 19 on the side of the inner bearing platform docking block 18. The spring mounting columns 19 are evenly arranged around the inner bearing platform docking block 18. The other end of the traction spring 15 is fixedly connected to the spring mounting column 19.

[0034] It should be noted that one end of the traction spring 15 is fixedly connected to the inside of the spring mounting groove 14, and the other end of the traction spring 15 is fixedly connected to the spring mounting column 19, so that when the device is not placed in the pipe 5 to be welded, the spring mounting groove 14 can pull the multi-directional traveling device 402 to prevent the multi-directional traveling device 402 from falling excessively, thereby avoiding excessive falling of the multi-directional traveling device 402 to hinder the overall placement of the device, thereby ensuring the convenience of placing and taking the device.

[0035] Embodiment 5: The multi-directional travel device 402 of the present invention comprises a No. 1 drive ring 21, a No. 2 drive ring 22, a travel drive motor 26, a spacing adjustment ring 29, a positioning rod 57, a No. 1 roller mounting platform 52, a No. 2 roller mounting platform 53, a No. 1 drive roller 54, and a No. 2 drive roller 55. The side surface of the front motion bearing platform 16 has a drive ring connecting groove 23, and the inside of the drive ring connecting groove 23 is provided with a No. 1 drive ring 21 and a No. 2 drive ring 22. The side surface of the No. 1 drive ring 21 contacts the No. 2 drive ring 22, and the side surface of the No. 1 drive ring 21 slides on the side surface of the No. 2 drive ring 22. The No. 1 drive ring 21 and the No. 2 drive ring 22 constitute a total motion ring, and the total motion ring is adapted to the drive ring connecting groove 23. The total motion ring is connected to the drive ring connecting groove 23. The ring rotates inside the drive ring connecting groove 23, and the No. 1 drive ring 21 and the No. 2 drive ring 22 are both provided with a driven gear ring 24. The top of the drive ring connecting groove 23 is provided with two sets of travel motor mounting platforms 25, and the two sets of travel motor mounting platforms 25 correspond to the positions of the No. 1 drive ring 21 and the No. 2 drive ring 22 respectively. The tops of the two sets of travel motor mounting platforms 25 are fixedly connected to the travel drive motor 26, and the transmission shaft of the travel drive motor 26 is fixedly connected to the travel driving gear 27. One of the two sets of travel driving gears 27 is meshed with the driven gear ring 24 of the No. 1 drive ring 21, and the other travel driving gear 27 of the two sets of travel driving gears 27 is meshed with the driven gear ring 24 of the No. 2 drive ring 22. The No. 1 drive ring 21, The side of the No. 2 driving ring 22 is provided with a lower adjusting rod mounting seat 59, the lower adjusting rod mounting seat 59 of the No. 1 driving ring 21 is evenly arranged around the No. 1 driving ring 21, and the lower adjusting rod mounting seat 59 of the No. 2 driving ring 22 is evenly arranged around the No. 2 driving ring 22, and the lower adjusting rod mounting seat 59 has a lower adjusting rod mounting column 67 inside, and the lower adjusting rod mounting column 67 has a screw mounting groove 68 inside, and the adjacent lower adjusting rod mounting seats 59 array ring constitute an adjustment ring connecting groove 28, and the adjustment ring connecting groove 28 is adapted to the spacing adjustment ring 29, and the adjustment ring connecting groove 28 is connected to the spacing adjustment ring 29, and the spacing adjustment ring 29 rotates inside the adjustment ring connecting groove 28, and the limit screw 66 is threadedly connected to the screw mounting groove 68, and the limit screw 66 is pressed tightly at the spacing The side of the adjustment ring 29 is provided with a roller positioning platform support column 58 on the side of the spacing adjustment ring 29, and the roller positioning platform support column 58 is evenly arranged around the spacing adjustment ring 29. The top of the roller positioning platform support column 58 is provided with a roller positioning platform 64, and the roller positioning platform 64 has a roller positioning groove 65 inside. The side of the No. 1 driving ring 21 is provided with a No. 1 roller mounting platform 52, and the No. 1 roller mounting platform 52 is evenly arranged around the No. 1 driving ring 21. The No. 1 roller mounting platform 52 has a No. 1 roller mounting groove 61 inside. The No. 1 roller mounting groove 61 is rotatably connected with the No. 1 driving roller 54, and the No. 1 driving roller 54 is designed with a 45° inclination angle. The side of the No. 2 driving ring 22 is provided with a No. 2 roller mounting platform 53, and the No. 2 roller mounting platform 53 has a No. 2 roller mounting groove 62 inside.The No. 2 roller mounting groove 62 is rotatably connected to the No. 2 driving roller 55. The No. 2 driving roller 55 is designed with a -45° inclination angle. The No. 1 roller mounting platform 52 and the No. 2 roller mounting platform 53 both have an upper adjusting rod mounting platform 56 at the bottom. The upper adjusting rod mounting platform 56 has a roller positioning column 63 at the bottom. The roller positioning column 63 is adapted to the roller positioning groove 65. The roller positioning column 63 is connected to the roller positioning groove 65. The roller positioning column 63 slides inside the roller positioning groove 65. The bottom of the adjusting rod 57 is rotatably connected to the lower adjusting rod mounting column 67. The top of the adjusting rod 57 connected to the No. 1 driving ring 21 is rotatably connected to the upper adjusting rod mounting platform 56 of the No. 1 roller mounting platform 52. The top of the adjusting rod 57 connected to the No. 2 driving ring 22 is rotatably connected to the upper adjusting rod mounting platform 56 of the No. 2 roller mounting platform 53.

[0036] Further, according to the inner diameter of the to-be-welded pipe 5 to be welded, the limit screw 66 is rotated in the reverse direction to release the pressure on the spacing adjustment ring 29, thereby rotating the corresponding spacing adjustment ring 29 to make all the No. 1 roller mounting platform 52 or the No. 2 roller mounting platform 53 synchronously approach or move away from each other, thereby controlling the size of the annular array of the No. 1 roller mounting platform 52 and the No. 2 roller mounting platform 53, so as to adapt to the welding operation of different to-be-welded pipes 5. After the device is placed inside the to-be-welded pipe 5, The travel drive motor 26 at the corresponding position controls the rotation of the array group of the No. 1 roller mounting platform 52 and the array group of the No. 2 roller mounting platform 53. By controlling the array group of the No. 1 roller mounting platform 52 and the array group of the No. 2 roller mounting platform 53 to rotate in opposite directions, the lateral resultant force on the No. 1 driving roller 54 and the No. 2 driving roller 55 is made 0, and the longitudinal resultant force on the No. 1 driving roller 54 and the No. 2 driving roller 55 is greater than 0, thereby controlling the device to travel inside the pipe 5 to be welded.

[0037] Furthermore, when a bent portion of the pipe 5 to be welded needs to be passed, the array group of the No. 1 roller mounting platform 52 and the array group of the No. 2 roller mounting platform 53 are controlled to rotate in the same direction of movement, so that the longitudinal resultant force on the No. 1 driving roller 54 and the No. 2 driving roller 55 is 0, and the lateral resultant force on the No. 1 driving roller 54 and the No. 2 driving roller 55 is greater than 0, so that the device rotates on the pipe 5 to be welded, and when the central axis of the side plane of the inner bearing platform docking column 17 is perpendicular to the central axis of the straight pipes at both ends of the pipe 5 to be welded at the turning point, the device can continue to move at the bend.

[0038] It should be noted that the spacing adjustment ring 29 controls the synchronous expansion and retraction of all the array groups of the No. 1 roller mounting platform 52 and the No. 2 roller mounting platform 53, so that the device can be used to carry out welding operations when facing different types of pipes 5 to be welded, thereby increasing the scope of application of the device.

[0039] It should also be noted that this device can rotate and move laterally inside the pipe 5 to be welded. When this device moves at the bend inside the pipe 5 to be welded, facing the place with a smaller bending radius, the multi-directional moving device 402 located at the rear side and the multi-directional moving device 402 located at the front side will always have a straight pipe that is completely in contact with the pipe 5 to be welded, thereby ensuring the moving effect of this device at the smaller bend. Facing the place with a larger turning radius, the larger number of driving rollers 54 and 55 can ensure the contact area with the pipe 5 to be welded at the bend, thereby ensuring the moving effect of this device at the larger bend, so that this device can be freely moved to any position in the pipeline for welding operations. The interaction between the components of this application is balanced, which effectively prevents the danger of uneven force deformation caused by inaccurate welding or uneven welds.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A railway tunnel ventilation duct welding equipment, characterized in that The invention comprises a welding mechanism support frame (1) and a pipe to be welded (5). A circumferential welding mechanism (2) is arranged in the middle of the welding mechanism support frame (1). Auxiliary support mechanisms (3) are arranged on both sides of the circumferential welding mechanism (2). The auxiliary support mechanisms (3) position and support the welding mechanism support frame (1) to prevent the welding mechanism support frame (1) from vibrating or deflecting during the welding process of the circumferential welding mechanism (2). Movement mechanisms (4) are arranged on both sides of the welding mechanism support frame (1). The movement mechanisms (4) comprise an auxiliary positioning device (401) and a multi-directional moving device (402). The auxiliary positioning device (401) is arranged on the side of the welding mechanism support frame (1), and the multi-directional moving device (402) is on the side of the auxiliary positioning device (401).

2. A railway tunnel ventilation duct welding equipment according to claim 1, characterized in that The annular seam welding mechanism (2) comprises a welding mechanism bearing ring (12), an annular welding drive gear (36), an annular welding drive motor (45), a laser welding head (47), and an auxiliary lighting lamp (48). The welding mechanism support frame (1) has a welding mechanism ring mounting groove (75) in the middle, a welding mechanism bearing column (11) in the middle of the welding mechanism ring mounting groove (75), the welding mechanism bearing column (11) is rotatably connected to the welding mechanism bearing ring (12), the welding mechanism bearing ring (12) has a counterweight support column (42) at the bottom, the counterweight support column (42) has a counterweight (43) at the bottom, the welding mechanism bearing ring (12) has a welding mechanism support column (39) at the top, the welding mechanism support column (39) has a cross positioning groove (51) at the top, the welding mechanism support column (39) is provided with a laser welding head (47) on the side, and the auxiliary lighting lamps (48) are fixedly connected to the two sides of the laser welding head (47).

3. A railway tunnel ventilation duct welding equipment according to claim 2, characterized in that The laser welding head (47) has a cross positioning column (49) on one side facing the welding mechanism support column (39), the cross positioning column (49) is adapted to the cross positioning groove (51), the cross positioning column (49) is connected to the cross positioning groove (51), the cross positioning column (49) slides inside the cross positioning groove (51), the side of the cross positioning column (49) has a welding hydraulic cylinder connecting plate (46), and the side of the welding mechanism support column (39) opposite to the laser welding head (47) is fixedly connected to the welding lifting hydraulic cylinder (46). 1), the hydraulic rod of the welding lifting hydraulic cylinder (41) is fixedly connected to the welding hydraulic cylinder connecting plate (46), one side of the welding mechanism bearing ring (12) is provided with a ring welding driven gear (73), the side surface of the welding mechanism ring mounting groove (75) is provided with a ring welding motor groove (44), the ring welding drive motor (45) is inserted into the ring welding motor groove (44) and fixed, the transmission shaft of the ring welding drive motor (45) is fixedly connected to the ring welding drive gear (36), and the ring welding drive gear (36) is meshed with the ring welding driven gear (73).

4. The railway tunnel ventilation duct welding equipment according to claim 1 is characterized by: The auxiliary support mechanism (3) comprises a support hydraulic cylinder (32), a No. 1 support block (34), and a No. 2 support block (35); the welding mechanism support frame (1) has a support hydraulic cylinder mounting platform (31) inside; the surface of the welding mechanism support frame (1) has a support frame positioning groove (33); the support hydraulic cylinder mounting platform (31) and the support frame positioning groove (33) are evenly staggered around the welding mechanism support frame (1); the inner side of the support hydraulic cylinder mounting platform (31) is fixedly connected to the support hydraulic cylinder (32); a plurality of No. 1 support blocks (34) and No. 2 support blocks (35) are arranged around the side of the welding mechanism support frame (1); the bottom of the No. 1 support block (34) has a No. 1 positioning rod (37); the hydraulic rod of the support hydraulic cylinder (32) passes through the welding mechanism support frame (1) and is fixedly connected to the No. 1 positioning rod (37); the bottom of the No. 2 support block (35) has a No. 2 positioning rod (38); The positioning rod (38) is adapted to the support frame positioning groove (33), the second positioning rod (38) is connected to the support frame positioning groove (33), the second positioning rod (38) slides inside the support frame positioning groove (33), the first support block (34) has a support block positioning platform (69) on one side, the first support block (34) has a support block positioning column (72) on the other side, the second support block (35) has a support block positioning platform (69) on one side, the second support block (35) has a support block positioning column (72) on the other side, the support block positioning platform (69) has a support block positioning groove (71) inside, the support block positioning groove (71) is adapted to the support block positioning column (72), the support block positioning groove (71) and the support block positioning column (72) between adjacent first support blocks (34) and second support blocks (35) are connected to each other, and the support block positioning column (72) slides inside the support block positioning groove (71).

5. The railway tunnel ventilation duct welding equipment according to claim 1 is characterized by: The auxiliary positioning device (401) comprises a rear motion bearing platform (13), a traction spring (15), and a front motion bearing platform (16). The welding mechanism support frame (1) is fixedly connected to the rear motion bearing platform (13) on both sides. The middle of the rear motion bearing platform (13) has an inner bearing platform docking column (17). The rear motion bearing platform (13) has a spring installation groove (14) inside. The spring installation groove (14) is evenly arranged around the inner bearing platform docking column (17). The traction spring (15) is inserted into the spring installation groove (14). One end of the traction spring (15) is fixedly connected to the inside of the spring installation groove (14). The side of the inner bearing platform docking column (17) is provided with a front motion bearing platform (16). ), the front moving bearing platform (16) has an inner bearing platform docking block (18) on one side facing the inner bearing platform docking column (17), the inner bearing platform docking block (18) has an inner bearing platform docking groove (74) inside, the inner bearing platform docking groove (74) is adapted to the inner bearing platform docking column (17), the inner bearing platform docking groove (74) is connected to the inner bearing platform docking column (17), the inner bearing platform docking groove (74) rotates outside the inner bearing platform docking column (17), the inner bearing platform docking groove (74) has a spring mounting column (19) on the side of the inner bearing platform docking block (18), the spring mounting columns (19) are evenly arranged around the inner bearing platform docking block (18), and the other end of the traction spring (15) is fixedly connected to the spring mounting column (19).

6. The railway tunnel ventilation duct welding equipment according to claim 1 is characterized by: The multi-directional travel device (402) comprises a first drive ring (21), a second drive ring (22), a travel drive motor (26), and a spacing adjustment ring (29); the side surface of the front motion support platform (16) is provided with a drive ring connecting groove (23); the first drive ring (21) and the second drive ring (22) are arranged inside the drive ring connecting groove (23); the side surface of the first drive ring (21) contacts the second drive ring (22); the side surface of the first drive ring (21) slides on the side surface of the second drive ring (22); the first drive ring (21) and the second drive ring (22) constitute a total motion ring; the total motion ring is adapted to the drive ring connecting groove (23); the total motion ring is connected to the drive ring connecting groove (23); the total motion ring rotates inside the drive ring connecting groove (23); the first drive ring The first drive ring (21) and the second drive ring (22) both have a driven gear ring (24) inside, and the top of the drive ring connecting groove (23) has two groups of travel motor mounting platforms (25), and the two groups of travel motor mounting platforms (25) correspond to the positions of the first drive ring (21) and the second drive ring (22) respectively. The tops of the two groups of travel motor mounting platforms (25) are fixedly connected to the travel drive motor (26), and the transmission shaft of the travel drive motor (26) is fixedly connected to the travel driving gear (27), and one of the two groups of travel driving gears (27) is meshed with the driven gear ring (24) of the first drive ring (21), and the other of the two groups of travel driving gears (27) is meshed with the driven gear ring (24) of the second drive ring (22).

7. A railway tunnel ventilation duct welding device according to claim 6, characterized in that The side surfaces of the No. 1 driving ring (21) and the No. 2 driving ring (22) are both provided with a lower adjustment rod mounting seat (59), the lower adjustment rod mounting seat (59) of the No. 1 driving ring (21) is evenly arranged around the No. 1 driving ring (21), the lower adjustment rod mounting seat (59) of the No. 2 driving ring (22) is evenly arranged around the No. 2 driving ring (22), the lower adjustment rod mounting seat (59) has a lower adjustment rod mounting column (67) inside, the lower adjustment rod mounting column (67) has a screw mounting groove (68) inside, the array ring of adjacent lower adjustment rod mounting seats (59) forms an adjustment ring connecting groove (28), and the adjustment ring connecting groove (28) and the The spacing adjustment ring (29) is adapted to the spacing adjustment ring (29), the adjustment ring connecting groove (28) is connected to the spacing adjustment ring (29), the spacing adjustment ring (29) rotates inside the adjustment ring connecting groove (28), the limit screw (66) is threadedly connected to the screw mounting groove (68), the limit screw (66) is pressed against the side of the spacing adjustment ring (29), the side of the spacing adjustment ring (29) has a roller positioning platform support column (58), the roller positioning platform support column (58) is evenly arranged around the spacing adjustment ring (29), the top of the roller positioning platform support column (58) has a roller positioning platform (64), and the roller positioning platform (64) has a roller positioning groove (65) inside.

8. The railway tunnel ventilation duct welding equipment according to claim 7 is characterized by: A No. 1 roller mounting platform (52) is arranged on the side of the No. 1 driving ring (21), and the No. 1 roller mounting platform (52) is evenly arranged around the No. 1 driving ring (21). The No. 1 roller mounting platform (52) has a No. 1 roller mounting groove (61) inside, and the No. 1 roller mounting groove (61) is rotatably connected to the No. 1 driving roller (54). A No. 2 roller mounting platform (53) is arranged on the side of the No. 2 driving ring (22), and the No. 2 roller mounting platform (53) has a No. 2 roller mounting groove (62) inside, and the No. 2 roller mounting groove (62) is rotatably connected to the No. 2 driving roller (55). The bottoms of the No. 1 roller mounting platform (52) and the No. 2 roller mounting platform (53) are both provided with an upper adjustment rod mounting platform (56).

9. The railway tunnel ventilation duct welding equipment according to claim 8 is characterized by: The bottom of the upper adjustment rod mounting platform (56) is provided with a roller positioning column (63), the roller positioning column (63) is adapted to the roller positioning groove (65), the roller positioning column (63) is connected to the roller positioning groove (65), the roller positioning column (63) slides inside the roller positioning groove (65), the bottom of the adjustment rod (57) is rotatably connected to the lower adjustment rod mounting column (67), the top of the adjustment rod (57) connected to the first drive ring (21) is rotatably connected to the upper adjustment rod mounting platform (56) of the first roller mounting platform (52), and the top of the adjustment rod (57) connected to the second drive ring (22) is rotatably connected to the upper adjustment rod mounting platform (56) of the second roller mounting platform (53).

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