Wheel supporting welding positioning tool, welding system and welding method

Abstract

The present disclosure relates to a supporting wheel welding positioning tool, a welding system and a welding method, wherein the supporting wheel welding positioning tool is used for positioning two half wheel bodies (6) in a supporting wheel (66) to be welded at a butt joint plane (w), the half wheel bodies (6) are provided with through holes in the axial direction, and the supporting wheel welding positioning tool comprises a sleeve (1) including a barrel (11) provided with a notch (12) on the side wall, the sleeve (1) is configured to pass through the through holes of the two half wheel bodies (6) respectively; a pad (2) arranged in the notch (12); and a mandrel assembly (3) inserted into the inner hole of the barrel (11) and abutting the pad (2) against the inner wall of the through hole of the half wheel body (6) to realize the expansion of the two half wheel bodies (6).

Description

Technical Field

[0001] This disclosure relates to the field of welding technology, and in particular to a welding positioning fixture, welding system and welding method for support rollers. Background Technology

[0002] Track rollers are key components of tracked construction machinery, and their preheating and welding quality and efficiency directly affect product competitiveness. Traditional track roller preheating and welding equipment is a single-station design (preheating and welding are performed at the same station), with manual or KBK (a crane-like lifting device) assistance for loading. It uses an oxygen-acetylene flame for preheating, after which the flame torch is raised and the welding torch is lowered to the weld seam for welding. This welding method is inefficient and poses safety hazards.

[0003] In the prior art known to the inventor, due to the influence of multiple factors such as machine tool precision, the positioning accuracy of traditional support roller welding positioning fixtures is poor. The half-wheel body must adopt a mortise and tenon joint structure to ensure the coaxiality of the two half-wheel bodies after welding. The mortise and tenon joint requires high rough machining precision for the half-wheel body, and the overlapping area increases the length of the half-wheel body, thereby increasing the raw material cost. At the same time, there are gaps at the mortise and tenon joint where the fusion is not complete. After the wheel body undergoes overall heat treatment, the gaps widen, and steel shot and iron filings will be trapped in the gaps during shot blasting and finishing processes, making cleaning difficult and seriously affecting the cleanliness of the wheel body and the assembly, increasing the risk of oil leakage in the support roller assembly. Summary of the Invention

[0004] The embodiments of this disclosure provide a welding positioning fixture, welding system, and welding method for track rollers, which can improve the product quality of track rollers.

[0005] According to a first aspect of this disclosure, a welding positioning fixture for a support roller is provided for positioning two half-wheel bodies in the support roller so that the two half-wheel bodies are welded at the mating plane. The half-wheel bodies are provided with through holes along the axial direction. The support roller welding positioning fixture includes:

[0006] An expansion sleeve includes a cylindrical body with a slot on its side wall, and the expansion sleeve is configured to pass through the through holes of the two half-wheel bodies respectively.

[0007] Spacer blocks, placed inside the slot; and

[0008] The mandrel assembly is inserted into the inner hole of the cylinder, and the pad is pressed against the inner wall of the through hole of the half-wheel body to achieve tension of the two half-wheel bodies.

[0009] In some embodiments, the cylinder includes a first section and a second section connected along the axial direction. The first section and the second section are respectively provided with a set of slots. Two sets of pads are provided, and the two sets of pads are respectively provided in the two sets of slots. The two half-wheels are the first half-wheel and the second half-wheel, and the two sets of pads are respectively used to abut against the inner wall of the through hole of the first half-wheel and the second half-wheel.

[0010] In some embodiments, each set of slots includes a plurality of slots spaced apart circumferentially.

[0011] In some embodiments, the support roller welding positioning fixture further includes an elastic ring, and the radial outer side wall of each set of pads is provided with a groove extending in the circumferential direction, and the elastic ring is embedded in the multiple grooves.

[0012] In some embodiments, the radial inner wall of the pad includes a slope, the slope being inclined in a direction from the end of the cylinder to the mating plane toward the central axis of the cylinder, and the outer wall shape of the mandrel assembly matches the radial inner wall of the pad.

[0013] In some embodiments, the cross-section of the inner cavity of the expansion sleeve and the cross-section of the mandrel assembly are circular.

[0014] In some embodiments, the mandrel assembly includes a first mandrel and a second mandrel, which are inserted into the inner holes from both ends of the cylinder, and two sets of pads are respectively abutted against the inner walls of the through holes of the first half-wheel and the second half-wheel.

[0015] In some embodiments, the expansion sleeve further includes a first flange portion. In the use state, the first end of the first half-wheel body is connected to the first end of the second half-wheel body. The first flange portion is disposed at the first end of the first section, and the second end of the first section is connected to the second section. The first flange portion is used to limit the second end of the first half-wheel body in the axial direction.

[0016] In some embodiments, the mandrel assembly includes a first mandrel and a second mandrel, and the support roller welding positioning fixture further includes:

[0017] A first spindle includes a first housing and a first drive component. A first flange is fixedly connected to the first housing. The first drive component is disposed within the first housing and configured to drive the first spindle to move axially; and / or

[0018] The second spindle includes a second housing, a second flange, and a second drive component. The second flange is fixedly connected to the second housing and is used to limit the second end of the second half-wheel in the axial direction. The second drive component is disposed in the second housing and is configured to drive the second spindle to move axially.

[0019] According to a second aspect of this disclosure, a welding system is proposed, including the support roller welding positioning fixture of the above embodiments.

[0020] In some embodiments, the welding system includes a preheating station and a welding station, which are spaced apart. The welding system further includes:

[0021] The position transfer device is configured to transfer the support roller and the support roller welding positioning fixture from the preheating station to the welding station.

[0022] In some embodiments, the welding system further includes:

[0023] An induction coil, movably positioned at the preheating station, is configured to preheat the half-wheel body at the mating plane; and

[0024] The temperature detection component is configured to detect the preheating temperature at the mating surface.

[0025] In some embodiments, the welding system further includes:

[0026] The feeding device is configured to transport the half-wheel body to a preset position;

[0027] A visual recognition device is configured to identify a half-wheel at a preset position and collect the position information of the half-wheel; and

[0028] The pickup device is configured to pick up the half-wheel body based on the position information and transfer it to the preheating station.

[0029] According to a third aspect of this disclosure, a welding method based on the welding system of the above embodiments is proposed, including a positioning step, the positioning step comprising:

[0030] The expansion sleeve passes through the through holes of each of the two half-wheel bodies;

[0031] Insert the mandrel assembly into the inner hole of the cylinder;

[0032] During the insertion of the mandrel assembly into the inner hole, the pad moves along the side wall of the slot away from the central axis of the expansion sleeve, so that the pad abuts against the inner wall of the through hole of the half-wheel body, thereby achieving the tensioning of the two half-wheel bodies.

[0033] In some embodiments, in the usage state, the first end of the first half-wheel body is connected to the first end of the second half-wheel body, the first end of the first section of the cylinder body is provided with a first flange, the support wheel welding positioning fixture further includes a second spindle, the second spindle includes a second housing and a second flange, the second flange is fixedly connected to the second housing, and the positioning step further includes:

[0034] The second end of the first half-wheel body is axially limited by the first flange; and / or

[0035] The second spindle is moved toward the second end of the second half-wheel body so that the second flange portion limits the second end of the second half-wheel body in the axial direction.

[0036] In some embodiments, the cylinder includes a first segment and a second segment connected axially, each segment having a set of slots; two sets of pads are provided, each set of pads being disposed within one set of slots; the two half-wheels are a first half-wheel and a second half-wheel; the mandrel assembly includes a first mandrel and a second mandrel; the support roller welding positioning fixture further includes a first spindle and a second spindle; the first spindle includes a first drive component; the second spindle includes a second drive component; and the positioning step further includes:

[0037] The first drive component drives the first spindle to move axially from one end of the cylinder toward a direction close to the mating plane, so that a set of pads abut against the inner wall of the through hole of the first half-wheel body;

[0038] The second drive component drives the second spindle to move axially from the other end of the cylinder toward a direction close to the mating plane, so that another set of pads abuts against the inner wall of the through hole of the second half wheel.

[0039] In some embodiments, the welding system further includes a feeding device, a vision recognition device, and a pickup device. The welding system is provided with a preheating station and a welding station. The welding method further includes a feeding step, which includes:

[0040] The half-wheel body is conveyed to the preset position by the feeding device;

[0041] The visual recognition device identifies the half-wheel at a preset position and collects the position information of the half-wheel;

[0042] The pickup device picks up the half-wheel body according to the location information and transfers it to the preheating station.

[0043] In some embodiments, the welding system further includes an induction coil and a temperature detection component, and the welding method further includes a preheating step, which includes:

[0044] Move the induction coil to the docking plane to preheat the half-wheel body;

[0045] The preheating temperature at the mating surface is detected by a temperature detection component. Once the preheating temperature reaches the preset temperature, the induction coil is moved away.

[0046] In some embodiments, the welding system further includes a position transfer device, and the welding method further includes a position transfer step, the position transfer step comprising:

[0047] Transfer the preheated support roller from the preheating station to the welding station;

[0048] After welding, the support rollers are removed from the support components;

[0049] This allows the unused support components to be transferred from the welding station to the preheating station to await the next loading.

[0050] In some embodiments, the welding method further includes:

[0051] With the support roller in the welding position, move the welding torch to the mating surface to perform welding;

[0052] A weld deposition area is formed at the butt joint plane by a single-sided welding and double-sided forming process.

[0053] Remove the welding torch after welding is complete.

[0054] Based on the above technical solution, the track roller welding positioning fixture of this disclosure embodiment can effectively ensure the coaxiality requirement of the inner hole of the wheel body welding, eliminate the gap between the two halves of the wheel body, improve the cleanliness of the wheel body and the assembly cleanliness, and thus improve the product quality of track rollers and tracked engineering machinery. Attached Figure Description

[0055] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0056] Figure 1 This is a schematic diagram of the structure of some embodiments of the welding positioning fixture for the support roller and the support roller in this disclosure.

[0057] Figure 2 This is a schematic diagram of the structure of some embodiments of the support roller welding positioning fixture disclosed herein.

[0058] Figure 3 This is a schematic diagram of the expansion sleeve and the first spindle of some embodiments of the support roller welding positioning fixture disclosed herein.

[0059] Figure 4 This is a cross-sectional view of some embodiments of the expansion sleeve and the first spindle of the support roller welding positioning fixture disclosed herein.

[0060] Figure 5 This is a schematic diagram of the structure of some embodiments of the second spindle of the support roller welding positioning fixture disclosed herein.

[0061] Figure 6 This is a schematic diagram of the structure of some embodiments of the welding system disclosed herein.

[0062] Figure 7 This is a schematic diagram of the weld fusion area of ​​two half-wheel bodies at the mating plane in some embodiments of this disclosure.

[0063] Explanation of reference numerals in the attached figures

[0064] 1. Expansion sleeve; 2. Pad block; 3. Mandrel assembly; 4. First spindle; 5. Second spindle; 6. Half-wheel body; w, mating plane; a, central axis;

[0065] 11. Cylinder; 12. Groove; 13. First flange; 14. Fastener; 111. First section; 112. Second section; 21. Groove; 22. Inclined surface; 31. First mandrel; 32. Second mandrel; 41. First housing; 42. First drive component; 421. Hydraulic cylinder; 422. Piston; 51. Second housing; 52. Second flange; 53. Second drive component; 61. First half-wheel body; 62. Second half-wheel body; 66. Support roller;

[0066] 81. Preheating station; 82. Welding station; 83. Position transfer device; 84. Induction coil; 85. Feeding device; 86. Vision recognition device; 87. Picking device; 88. Welding torch; 89. Unloading channel. Detailed Implementation

[0067] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. The aspects so defined may be combined with any other aspect or aspects unless expressly stated otherwise. In particular, any feature considered preferred or advantageous may be combined with one or more other features considered preferred or advantageous.

[0068] The terms "first" and "second" used in this disclosure are merely for ease of description and to distinguish different components with the same name, and do not indicate a sequential or primary / secondary relationship.

[0069] In the description of this disclosure, it should be understood that the terms "upper", "lower", "inner" or "outer", etc., indicate the orientation or positional relationship based on the slot, cylinder, side wall, etc., and are defined only for the convenience of describing this disclosure, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0070] First, this disclosure provides a welding positioning fixture for support rollers, such as... Figures 1 to 7 As shown, the support roller 66 has two half-wheel bodies 6 for positioning so that the two half-wheel bodies 6 are welded at the mating plane w. The half-wheel bodies 6 have through holes along the axial direction. The support roller welding positioning fixture includes:

[0071] The expansion sleeve 1 includes a cylindrical body 11 with a slot 12 on its side wall. The expansion sleeve 1 is configured to pass through the through holes of the two half-wheel bodies 6.

[0072] Pad 2 is placed inside slot 12; and

[0073] The spindle assembly 3 is inserted into the inner hole of the cylinder 11, and the pad 2 is pressed against the inner wall of the through hole of the half-wheel body 6 to achieve tensioning of the two half-wheel bodies 6.

[0074] Specifically, the support roller welding positioning fixture is used to ensure the coaxiality of the two half-wheel bodies 6 after welding. More specifically, the support roller welding positioning fixture ensures that there is no gap between the two half-wheel bodies 6 at the mating plane, and at the same time ensures that the central axis a of the cylinder 11 passes through the center of the through hole of the two half-wheel bodies. Specifically, the length of the cylinder 11 should be sufficient to allow the two half-wheel bodies 6 to pass through.

[0075] Specifically, as the mandrel assembly 3 is inserted into the inner hole of the cylinder 11, the mandrel assembly 3 pushes the pad 2 away from the central axis a, thereby tightening the inner hole of the half-wheel body 6. Optionally, the pad 2 can be parallel to the radial direction away from the central axis a, or it can be inclined radially away from the central axis a.

[0076] Specifically, both the slot 12 and the pad 2 are formed by cutting the outer wall of the cylinder 11. The expansion sleeve 1 and the pad 2 are machined as a whole, resulting in good consistency. This ensures that the coaxiality of the two halves of the wheel 6 is not affected by the precision of the machine tool guide rails, effectively meeting the coaxiality requirements of the inner hole for wheel welding. Optionally, one or more slots 12 can be provided along the circumference of the cylinder 11. Optionally, the pad 2 can be embedded in the cylinder 11 by means of springs or the like.

[0077] Optionally, the mandrel assembly 3 can be cylindrical, such as a cylinder or a polygonal prism, or conical, or frustum-shaped, such as a quadrangular frustum. Optionally, the end of the mandrel assembly 3 that is inserted into the inner hole can be chamfered, and the pad 2 can also be chamfered to cooperate with the mandrel assembly 3, so as to increase the smoothness and stability of the mandrel assembly 3 when inserted into the inner hole, and to achieve the tensioning of the two half-wheels 6 by the mandrel assembly 3 in a simple and reliable manner.

[0078] Optionally, the mandrel assembly 3 can be a one-piece structure, inserted into the inner hole of the cylinder 11 from one end, or it can be a split structure, inserted into the inner hole of the cylinder 11 from both ends respectively. Correspondingly, only one set of long pads can be set to tighten the two half-wheels 6 together, or two or more sets of pads 2 can be set to tighten the two half-wheels separately.

[0079] The support roller welding positioning fixture of this embodiment has high positioning accuracy, which can ensure the coaxiality of the two half-wheel bodies 6 after welding. The two half-wheel bodies 6 do not need to use a mortise and tenon joint structure at the mating plane w, which can reduce the length of the half-wheel body, reduce the cost of raw materials, and avoid the presence of gaps incomplete fusion at the mortise and tenon joint, thereby achieving the purpose of eliminating gaps incomplete fusion and improving the cleanliness of the wheel body.

[0080] The support roller welding positioning fixture of this embodiment can effectively ensure the coaxiality requirement of the inner hole of the wheel body welding, eliminate the gap between the two halves of the wheel body, improve the cleanliness of the wheel body and the assembly cleanliness, and thus improve the product quality of support rollers and tracked engineering machinery.

[0081] In some embodiments, such as Figures 1 to 4 As shown, the cylinder 11 includes a first section 111 and a second section 112 connected along the axial direction. The first section 111 and the second section 112 are respectively provided with a set of slots 12. There are two sets of pads 2, and the two sets of pads 2 are respectively provided in the two sets of slots 12. The two half-wheels 6 are the first half-wheel 61 and the second half-wheel 62, and the two sets of pads 2 are respectively used to abut against the inner wall of the through hole of the first half-wheel 61 and the second half-wheel 62.

[0082] Specifically, the pad 2 includes an outer side wall and an inner side wall. The outer side wall of the pad 2 is used to abut against the inner wall of the through hole of the half-wheel body 6. Optionally, when the outer side wall of the pad 2 abuts against the half-wheel body 6, the entire outer side wall may abut against the inner wall of the through hole of the half-wheel body 6, or only a portion of the outer side wall may abut against the inner wall of the through hole of the half-wheel body 6. Optionally, the two sets of pads 2 may abut against the two half-wheel bodies 6 simultaneously, or they may abut against the two half-wheel bodies sequentially.

[0083] The support roller welding positioning fixture of this embodiment can more reliably and stably tighten the inner wall of the through hole of each half-wheel body by setting a set of pads 2 for each half-wheel body 6, further improving the docking stability of the two half-wheel bodies 6 and improving the docking accuracy of the half-wheel bodies at the docking plane, thereby improving the cleanliness of the wheel body and improving the product quality of support rollers and tracked engineering machinery.

[0084] In some embodiments, such as Figures 1 to 4 As shown, each set of slots 12 includes multiple slots 12 spaced apart along the circumference.

[0085] Specifically, each set of slots 12 includes multiple slots 12 spaced apart circumferentially along the cylinder 11. Optionally, the spacing between the multiple slots 12 can be the same or different. Optionally, after the expansion sleeve 1 is processed as a whole, two sets of slots 12 and two sets of pads 2 can be evenly cut along the circumference of the first section 111 and the second section 112 of the cylinder 11, wherein each set of slots 12 includes four slots and each set of pads includes four pads.

[0086] The support roller welding positioning fixture of this embodiment can more reliably and stably tighten the inner wall of the through hole of each half-wheel body through multiple slots 12 arranged at intervals along the circumference, further improving the docking stability of the two half-wheel bodies 6 and improving the docking accuracy of the half-wheel bodies at the docking plane, thereby improving the cleanliness of the wheel body and improving the product quality of support rollers and tracked engineering machinery.

[0087] In some embodiments, such as Figures 1 to 4 As shown, the support roller welding positioning fixture also includes an elastic ring. Each set of pads 2 has a groove 21 extending circumferentially on the radial outer side wall of multiple pads 2. The elastic ring is embedded in multiple grooves 21.

[0088] Specifically, after the mandrel assembly 3 is pulled out from the inner hole of the cylinder 11, the multiple pads 2 can be automatically reset under the action of the elastic ring, so that the half wheel 6 can pass through the cylinder 11 of the expansion sleeve 1 during the next feeding.

[0089] The groove and elastic ring of this embodiment enable the pad 2 to automatically reset after the mandrel assembly 3 is pulled out from the inner hole of the cylinder 11, which can improve the adaptability of the support roller welding positioning fixture to the continuous welding operation, reduce manual operation, and improve the smoothness and work efficiency of the welding system.

[0090] In some embodiments, such as Figures 1 to 4 As shown, the radial inner wall of the pad 2 includes an inclined surface 22, the inclined surface 22 is inclined from the end of the cylinder 11 to the mating plane w towards the direction close to the central axis a of the cylinder 11, and the shape of the outer wall of the mandrel assembly 3 matches the radial inner wall of the pad 2.

[0091] Specifically, the outer wall of the spindle assembly 3 includes a bevel that matches the bevel 22.

[0092] This embodiment increases the smoothness and stability of the mandrel assembly 3 when it is inserted into the inner hole by setting matching inclined surfaces on the radial inner wall of the pad 2 and the outer wall of the mandrel assembly 3, and achieves the tensioning of the two half-wheel bodies 6 by the mandrel assembly 3 in a simple and reliable manner.

[0093] In some embodiments, such as Figures 1 to 4 As shown, the cross-section of the inner cavity of the expansion sleeve 1 and the cross-section of the mandrel assembly 3 are circular.

[0094] Specifically, when the cross-section of the inner cavity of the expansion sleeve 1 and the cross-section of the mandrel assembly 3 are circular, the mandrel assembly 3 can be horizontally inserted into the inner hole of the cylinder 11 in any direction on the entire circumference, rather than being limited to a few specific angles. This can increase the smoothness of the positioning of the support roller welding positioning fixture and improve the positioning efficiency.

[0095] Specifically, the inner cavity cross-section of the cylinder 11 is circular, the inner hole of the cylinder 11 can be a cylindrical hole, and a portion of the radial inner sidewall of the multiple pads 2 forms a frustum or conical hole that gradually narrows from both ends of the cylinder 11 to the mating plane w. Correspondingly, the mandrel assembly 3 can be a gradually narrowing frustum or conical structure.

[0096] This embodiment sets the inner cavity cross-section of the expansion sleeve 1 and the cross-section of the mandrel assembly 3 to be circular, so that the mandrel assembly 3 can be horizontally inserted into the inner hole of the cylinder in any circumferential direction, thereby increasing the smoothness of the positioning of the support roller welding positioning fixture and improving the positioning efficiency.

[0097] In some embodiments, such as Figures 1 to 5As shown, the spindle assembly 3 includes a first spindle 31 and a second spindle 32, which are inserted into the inner holes from both ends of the cylinder 11, and the two sets of pads 2 are respectively pressed against the inner walls of the through holes of the first half-wheel body 61 and the second half-wheel body 62.

[0098] Specifically, as the first mandrel 31 and the second mandrel 32 move toward the mating plane w, the two sets of pads 2 protrude from the two sets of slots 12 and respectively tighten the first half-wheel body 61 and the second half-wheel body 62. Optionally, the first mandrel 31 and the second mandrel 32 can be inserted into the inner hole from both ends of the cylinder 11 simultaneously, or they can be inserted into the inner hole sequentially.

[0099] The support roller welding positioning fixture of this embodiment, by setting a first mandrel 31 and a second mandrel 32, enables a single mandrel to independently tension a single half-wheel body, further improving the docking stability of the two half-wheel bodies 6 and improving the docking accuracy of the half-wheel bodies at the docking plane, thereby improving the cleanliness of the wheel body and improving the product quality of support rollers and tracked engineering machinery.

[0100] In some embodiments, such as Figures 1 to 4 As shown, the expansion sleeve 1 also includes a first flange 13. In the use state, the first end of the first half-wheel body 61 is connected to the first end of the second half-wheel body 62. The first flange 13 is provided at the first end of the first section 111, and the second end of the first section 111 is connected to the second section 112. The first flange 13 is used to limit the second end of the first half-wheel body 61 in the axial direction.

[0101] Specifically, the mating point between the first end of the first half-wheel body 61 and the first end of the second half-wheel body 62 is the mating plane w. Optionally, the cylinder body 11 and the first flange portion 13 can be integrally machined to form an expansion sleeve 1 to increase the strength of the support roller welding positioning fixture.

[0102] This embodiment limits the first half-wheel body 61 in the axial direction by using the first flange 13, which can improve the docking stability of the two half-wheel bodies, thereby improving the docking accuracy of the half-wheel bodies at the docking plane and the cleanliness of the wheel body after welding.

[0103] In some embodiments, such as Figures 1 to 5 As shown, the mandrel assembly 3 includes a first mandrel 31 and a second mandrel 32, and the support roller welding positioning fixture also includes:

[0104] The first spindle 4 includes a first housing 41 and a first drive component 42. A first flange 13 is fixedly connected to the first housing 41. The first drive component 42 is disposed within the first housing 41 and configured to drive the first spindle 31 to move axially; and / or

[0105] The second spindle 5 includes a second housing 51, a second flange 52, and a second drive component 53. The second flange 52 is fixedly connected to the second housing 51 and is used to limit the second end of the second half-wheel 62 in the axial direction. The second drive component 53 is disposed in the second housing 51 and is configured to drive the second spindle 32 to move axially.

[0106] Specifically, the first flange 13 is fixed to the first housing 41. Optionally, the first flange 13 can be fixed to the first housing 41 by fasteners 14, for example, the fasteners 14 can be four M6×20 bolts. Optionally, through holes can be provided on the side wall of the first housing 41 to facilitate installation and observation of the internal structure.

[0107] Specifically, the first spindle 4 and the second spindle 5 can move axially toward the mating plane w under the drive of hydraulic pressure or the like to press against the two half-wheel bodies, that is, to limit the two half-wheel bodies between the first flange portion 13 and the second flange portion 52. Specifically, the first drive component 42 and the second drive component 53 respectively drive the first spindle 31 and the second spindle 32 to move axially toward the mating plane w. As the two spindles move, the pad 2 protrudes and abuts against the inner wall of the through hole of the half-wheel body 6 to achieve tensioning of the two half-wheel bodies 6.

[0108] Specifically, the first spindle 31 is fixedly connected to the first drive component 42, and the second spindle 32 is fixedly connected to the second drive component 53. Optionally, the first drive component 42 and the second drive component 53 can be any drive component. For example, the first drive component 42 may include a hydraulic cylinder 421 and a piston 422, with the piston 422 connected to the first spindle 31.

[0109] More specifically, under hydraulic driving force, piston 422 drives the first spindle 31 to move towards the mating plane w. As the first spindle 31 moves, it lifts the pad 2 on the cylinder 11 that is held by the elastic ring, tightening the inner hole of the first half-wheel body 61. Similarly, the second driving component 53 drives the second spindle 32 to move towards the mating plane w and insert it into the inner hole. As the second spindle 32 moves, it lifts the pad 2 on the cylinder 11 that is held by the elastic ring, tightening the inner hole of the first half-wheel body 61.

[0110] In this embodiment, the first flange 13 and the second flange 52 can axially limit the two half-wheel bodies, improving the docking stability. The first spindle 4 and the second spindle 5 can drive the first mandrel 31 and the second mandrel 32 to move axially through the drive component, saving manpower, improving the accuracy of the positioning tooling and the level of automation, thereby improving the docking accuracy of the half-wheel bodies at the docking plane and the cleanliness of the wheel bodies after welding.

[0111] Secondly, this disclosure provides a welding system, such as Figure 6As shown, the support roller welding and positioning fixture includes the above-described embodiments.

[0112] The welding system of this embodiment has high positioning accuracy, which can ensure the coaxiality of the two half-wheel bodies 6 after welding. The two half-wheel bodies 6 do not need to use a mortise and tenon joint structure at the mating plane w, which can reduce the length of the half-wheel body, reduce the cost of raw materials, and avoid the existence of gaps incomplete fusion at the mortise and tenon joint. This achieves the purpose of eliminating gaps incomplete fusion and improving the cleanliness of the wheel body, thereby improving the cleanliness of the assembly and improving the product quality of track rollers and tracked engineering machinery.

[0113] In some embodiments, such as Figure 6 As shown, the welding system includes a preheating station 81 and a welding station 82, which are spaced apart. The welding system also includes:

[0114] The position transfer device 83 is configured to transfer the support roller 66 and the support roller welding positioning fixture from the preheating station 81 to the welding station 82.

[0115] Specifically, the preheating station 81 and the welding station 82 can be arranged symmetrically with a 180° rotation. After the support rollers are preheated at the preheating station 81, the support components and support rollers are rotated 180° to the welding station 82 via the position transfer device 83. The support components that were previously vacant at the welding station 82 are rotated to the preheating station 81 to await the next loading and preheating. This arrangement can shorten the overall cycle time of the equipment and increase production efficiency by more than 50%. Optionally, multiple sets of preheating stations 81 and welding stations 82 can be set up to further improve production efficiency, such as two sets.

[0116] The dual-station design of the welding system in this embodiment can avoid the safety hazards caused by single-station preheating and welding, and improve the efficiency and quality of support roller preheating and welding.

[0117] In some embodiments, the welding system further includes:

[0118] An induction coil 84, movably disposed at a preheating station 81, is configured to preheat the half-wheel body 6 at the mating plane w; and

[0119] The temperature detection component is configured to detect the preheating temperature at the mating plane w.

[0120] Specifically, the preheating power and preheating time of the induction coil 84 can be adjusted according to the size of the workpiece and the temperature requirements. Specifically, the temperature detection component can be an infrared temperature measuring device, capable of monitoring the preheating temperature in real time. Once the set temperature is reached, preheating stops and the induction coil is removed.

[0121] Specifically, traditional preheating of support rollers before welding involves an oxy-acetylene flame at a temperature of 200–300°C. Depending on the product size, the preheating time is approximately 3–15 minutes, resulting in low efficiency and energy costs of 1.2–6 yuan. More specifically, induction preheating, such as using an induction coil 84, can replace traditional oxy-acetylene flame preheating, reducing energy consumption by approximately 50%, increasing efficiency by over 60%, and eliminating the safety hazard of open flames.

[0122] Optionally, by detecting the preheating temperature at the mating plane w, the temperature detection component can enable the position transfer device 83 to transfer the support member and the preheated support roller 66 when the preheating temperature reaches a preset value, or reduce the preheating intensity of the induction coil 84, thereby further improving preheating efficiency, reducing energy consumption, and improving the production efficiency of the welding system.

[0123] The induction coil 84 of the welding system in this embodiment can replace the traditional oxygen-acetylene flame preheating, reduce energy consumption, improve preheating efficiency, and enhance the safety of the welding system. The induction coil 84 and the temperature detection component can further improve preheating efficiency, reduce energy consumption, and increase the production efficiency of the welding system.

[0124] In some embodiments, such as Figure 6 As shown, the welding system also includes:

[0125] The feeding device 85 is configured to transport the half-wheel 6 to a preset position;

[0126] The visual recognition device 86 is configured to identify the half-wheel 6 at a preset position and collect the position information of the half-wheel 6; and

[0127] Pick-up device 87 is configured to pick up half-wheel body 6 according to position information and transfer it to preheating station 81.

[0128] Specifically, the feeding device 85 may include a transfer trolley, for example, a manual hoisting of a material frame filled with half a wheel body 6 onto the transfer trolley, and the transfer trolley transports the material frame to a designated preset position inside the fence, which may be a safety fence.

[0129] Specifically, the visual recognition device 86 can be a 3D visual recognition device, which can scan to identify the position of the half-wheel 6. The picking device 87 transfers the half-wheel 6 in the material frame to the preheating station 81 according to the position information of the 3D visual recognition device. More specifically, the picking device 87 can be a robotic arm, etc.

[0130] More specifically, each layer of half-wheels in the material frame is separated by a rigid PVC board. After the half-wheels of the previous layer are removed, the robotic arm changes to a vacuum suction cup gripper to remove the partition and places it in a designated position before identifying and grabbing the material of the next layer. After all the materials are removed, the transfer trolley transports the empty material frame to the outside of the safety fence, and the crane is manually operated to replace the material frame.

[0131] Specifically, the welding system may also include a welding torch 88, a feeding channel 89, and a support component. The support component may be two support plates with a fixed included angle, connected by a connecting edge. In the supporting state, the opening of the support component faces upward, and in the feeding state, the opening is offset towards the feeding channel 89. More specifically, the support component and the preheated half-wheel body 6 are moved to the welding station 82, and the welding torch 88 is moved to the weld position of the mating plane w for welding. After welding is completed, the welding torch 88 is lifted, and after the first mandrel 31 and the second mandrel 32 are withdrawn, the welded support wheel 66 is withdrawn from the cylinder 11. The support plate of the support component is rotated around the connecting edge, so that the welded support wheel 66 can be fed from the support component to the feeding channel 89.

[0132] The welding system of this embodiment, by setting up components such as a feeding device 85, a vision recognition device 86, and a pickup device 87, can realize dual-station automated welding of the support roller 66, saving manpower, improving the automation level and safety of the welding system, improving the preheating and welding efficiency and quality of the support roller, improving the cleanliness of the wheel body after welding, and thus improving the product quality of support rollers and tracked engineering machinery.

[0133] Furthermore, this disclosure also provides a welding method based on the welding system of the above embodiments, including a positioning step, the positioning step including:

[0134] Make the expansion sleeve 1 pass through the through holes of the two half-wheel bodies 6;

[0135] Insert the mandrel assembly 3 into the inner hole of the cylinder 11;

[0136] During the insertion of the spindle assembly 3 into the inner hole, the pad 2 is moved along the side wall of the slot 12 in a direction away from the central axis a of the expansion sleeve 1, so that the pad 2 abuts against the inner wall of the through hole of the half wheel body 6, thereby achieving the tensioning of the two half wheel bodies 6.

[0137] Specifically, the expansion sleeve 1 is made to pass through the through holes of the two half-wheel bodies 6 respectively. That is, before welding, the first half-wheel body 61 and the second half-wheel body 62 need to pass through the cylinder 11 respectively and be placed on the support of the preheating station 81. Optionally, the two half-wheel bodies 6 can be moved manually, or it can be completed by automated means such as a picking device 87, such as a robotic arm.

[0138] The positioning step of the welding method in this embodiment can improve the positioning accuracy of the two half-wheel bodies 6, ensure the coaxiality of the two half-wheel bodies 6 after welding, and avoid gaps at the joint where the male and female parts are not fully fused. This achieves the purpose of eliminating gaps where the parts are not fused and improving the cleanliness of the wheel body, thereby improving the cleanliness of the assembly and improving the product quality of track rollers and tracked engineering machinery.

[0139] In some embodiments, in the usage state, the first end of the first half-wheel body 61 is connected to the first end of the second half-wheel body 62, the first end of the first section 111 of the cylinder body 11 is provided with a first flange portion 13, the support wheel welding positioning fixture also includes a second spindle 5, the second spindle 5 includes a second housing 51 and a second flange portion 52, the second flange portion 52 is fixedly connected to the second housing 51, and the positioning step further includes:

[0140] The second end of the first half-wheel body 61 is axially limited by the first flange 13; and / or

[0141] The second main shaft 5 is moved toward the second end of the second half-wheel body 62 so that the second flange 52 limits the second end of the second half-wheel body 62 in the axial direction.

[0142] In this embodiment, the positioning step uses the first flange 13 to axially limit the first half-wheel body 61, and the movement of the second main shaft 5 causes the second flange 52 to cooperate with the first flange 13 to axially limit the two half-wheel bodies 6, which can improve the docking stability of the half-wheel bodies 6, thereby improving the welding quality and product quality.

[0143] In some embodiments, the cylinder 11 includes a first segment 111 and a second segment 112 connected axially. The first segment 111 and the second segment 112 are each provided with a set of slots 12. Two sets of pads 2 are provided, each set located within one set of slots 12. The two half-wheels 6 are respectively a first half-wheel 61 and a second half-wheel 62. The spindle assembly 3 includes a first spindle 31 and a second spindle 32. The support roller welding positioning fixture also includes a first spindle 4 and a second spindle 5. The first spindle 4 includes a first drive component 42, and the second spindle 5 includes a second drive component 53. The positioning step further includes:

[0144] The first drive component 42 drives the first spindle 31 to move axially from one end of the cylinder 11 toward the direction close to the mating plane w, so that a set of pads 2 abut against the inner wall of the through hole of the first half-wheel body 61.

[0145] The second drive component 53 drives the second spindle 32 to move axially from the other end of the cylinder 11 toward the direction close to the mating plane w, so that another set of pads 2 abuts against the inner wall of the through hole of the second half wheel 62.

[0146] The positioning step of this embodiment enables the first drive component 42 and the second drive component 53 to drive the first spindle 31 and the second spindle 32 respectively, thereby allowing a single spindle to independently tension a single half-wheel body, further improving the docking stability of the two half-wheel bodies 6 and improving the docking accuracy of the half-wheel bodies at the docking plane, thereby improving the cleanliness of the wheel body and improving the product quality of support rollers and tracked engineering machinery.

[0147] In some embodiments, the welding system further includes a feeding device 85, a vision recognition device 86, and a pickup device 87. The welding system is provided with a preheating station 81 and a welding station 82. The welding method further includes a feeding step, which includes:

[0148] The half-wheel body 6 is conveyed to the preset position by the feeding device 85;

[0149] The visual recognition device 86 identifies the half-wheel 6 at a preset position and collects the position information of the half-wheel 6;

[0150] The picking device 87 picks up the half-wheel body 6 according to the position information and transfers it to the preheating station 81.

[0151] Specifically, the feeding step is performed before the positioning step.

[0152] In this embodiment, the feeding step of the welding method is controlled by a controller to perform actions on components such as the feeding device 85, the vision recognition device 86, and the picking device 87. This enables automated welding of the support roller 66 in two stations, saving manpower, improving the automation level and safety of the welding system, improving the preheating and welding efficiency and quality of the support roller, improving the cleanliness of the wheel body after welding, and thus improving the product quality of support rollers and tracked engineering machinery.

[0153] In some embodiments, the welding system further includes an induction coil 84 and a temperature detection component, and the welding method further includes a preheating step, which includes:

[0154] Move the induction coil 84 to the docking plane w to preheat the half-wheel body 6;

[0155] The preheating temperature at the docking plane w is detected by the temperature detection component. When the preheating temperature reaches the preset temperature, the induction coil 84 is moved away.

[0156] Specifically, the preheating step is performed after the positioning step.

[0157] The preheating step of the welding method in this embodiment, through the cooperation of induction coil 84 and temperature detection component, can further improve preheating efficiency, reduce energy consumption, and improve the production efficiency of the welding system.

[0158] In some embodiments, the welding system further includes a position transfer device 83, and the welding method further includes a position transfer step, which includes:

[0159] The preheated support roller 66 is transferred from the preheating station 81 to the welding station 82;

[0160] After welding, the support roller 66 is removed from the support component;

[0161] The unused support components after material feeding are transferred from welding station 82 to preheating station 81 to await the next material feeding.

[0162] Specifically, the position transfer step is performed after the loading step.

[0163] The position transfer step of the welding method in this embodiment can avoid the safety hazards caused by single-station preheating and welding, and improve the efficiency and quality of support roller preheating and welding.

[0164] In some embodiments, the welding method further includes:

[0165] With the support roller 66 in the welding position 82, the welding torch 88 is moved to the mating plane w for welding.

[0166] A weld deposition area is formed at the butt joint plane w by a single-sided welding and double-sided forming process.

[0167] Remove the welding torch 88 after welding is complete.

[0168] Specifically, the structure of the two half-wheels 6 at the mating plane is as follows: Figure 1 As shown, the weld deposition area formed at the butt joint plane w using the single-sided welding and double-sided forming process is as follows: Figure 7 As shown, more specifically, the weld structure is designed with a blunt edge thickness of 4mm. The first layer is welded with a current of 300A, a voltage of 31.5V, and a welding speed of 0.7rpm. The second layer is welded with a current of 270A, a voltage of 32V, and a welding speed of 0.45rpm. This design ensures that the blunt edge is fully fused without breaking through, eliminates incomplete fusion gaps, prevents the inclusion of steel shot and iron filings, effectively ensures the cleanliness of the wheel body, and improves the reliability of the support roller assembly.

[0169] The welding method in this embodiment employs a single-sided welding and double-sided forming process, which ensures that the blunt edge is fully fused without being penetrated. This eliminates gaps where the weld is not fully fused, prevents the inclusion of steel shot and iron filings, improves the cleanliness of the wheel body and the assembly, and thus improves the product quality of track rollers and tracked construction machinery.

[0170] In some specific embodiments, the support roller welding positioning fixture further includes a first spindle 4 and a second spindle 5. The first spindle 4 includes a first drive component 42, and the second spindle 5 includes a second housing 51, a second flange 52, and a second drive component 53. The cylinder 11 includes a first section 111 and a second section 112 connected axially. A first flange 13 is provided on the first end of the first section 111 of the cylinder 11. The two half-wheel bodies 6 are the first half-wheel body 61 and the second half-wheel body 62, respectively. The mandrel assembly 3 includes a first mandrel 31 and a second mandrel 32. The welding system is provided with a preheating station 81 and a welding station 82. The welding system also includes a position transfer device 83, an induction coil 84, a feeding device 85, a vision recognition device 86, a pickup device 87, a welding torch 88, and a discharge channel 89. The welding method includes:

[0171] The half-wheel body 6 is conveyed to the preset position by the feeding device 85;

[0172] The visual recognition device 86 identifies the half-wheel 6 at a preset position and collects the position information of the half-wheel 6;

[0173] The picking device 87 picks up the half-wheel body 6 according to the position information and transfers it to the preheating station 81, so that the first half-wheel body 61 and the second half-wheel body 62 pass through the cylinder 11 and are placed on the support of the preheating station 81 respectively.

[0174] The second end of the first half-wheel body 61 is axially limited by the first flange 13;

[0175] The second main shaft 5 is moved toward the second end of the second half-wheel body 62 so that the second flange 52 limits the second end of the second half-wheel body 62 in the axial direction, and the second flange 52 cooperates with the first flange 13 to limit the second ends of the two half-wheel bodies 6 in the axial direction.

[0176] The first drive component 42 drives the first spindle 31 to move axially from one end of the cylinder 11 toward the direction close to the mating plane w, so that a set of pads 2 abut against the inner wall of the through hole of the first half-wheel body 61.

[0177] The second drive component 53 drives the second spindle 32 to move axially from the other end of the cylinder 11 toward the direction close to the mating plane w, so that another set of pads 2 abuts against the inner wall of the through hole of the second half wheel 62.

[0178] Move the induction coil 84 to the docking plane w to preheat the half-wheel body 6;

[0179] The preheating temperature at the docking plane w is detected by the temperature detection component. When the preheating temperature reaches the preset temperature, the induction coil 84 is moved away.

[0180] The preheated support roller 66 is transferred from the preheating station 81 to the welding station 82 by the position transfer device 83.

[0181] With the support roller 66 in the welding position 82, the welding torch 88 is moved to the mating plane w for welding.

[0182] A weld deposition area is formed at the butt joint plane w by a single-sided welding and double-sided forming process.

[0183] Remove the welding torch 88 after welding is complete;

[0184] The first mandrel 31 and the second mandrel 32 are withdrawn from the inner hole of the cylinder 11, the cylinder 11 is withdrawn from the through hole of the half-wheel body 6, and the support is flipped so that the support wheel 66 after welding is unloaded from the support.

[0185] The empty support component after unloading is flipped and reset, and transferred from welding station 82 to preheating station 81 to await the next loading at preheating station 81.

[0186] The welding method of this embodiment has high stability and accuracy in the joint, which can improve the positioning accuracy of the two half-wheel bodies 6, ensure the coaxiality of the two half-wheel bodies 6 after welding, and avoid gaps of incomplete fusion at the joint, thereby achieving the purpose of eliminating gaps of incomplete fusion and improving the cleanliness of the wheel body, and thus improving the cleanliness of the assembly. It can realize dual-station automated welding of the support roller 66, save manpower, improve the automation level and safety of the welding system, improve the preheating and welding efficiency and quality of the support roller, improve the cleanliness of the wheel body after welding, and thus improve the product quality of support rollers and tracked engineering machinery.

[0187] Moreover, this welding method can avoid the safety hazards caused by single-station preheating and welding, has high preheating efficiency and low energy consumption, and can improve the preheating and welding efficiency and quality of track rollers. The welding process adopts a single-sided welding and double-sided forming process, which can ensure the blunt edge is fully melted without breaking through, eliminate incomplete fusion gaps, eliminate the hidden dangers of steel shot and iron filings, improve the cleanliness of the wheel body and the assembly cleanliness, and thus improve the product quality of track rollers and tracked engineering machinery.

[0188] The foregoing has provided a detailed description of a support roller welding positioning fixture, welding system, and welding method. Specific embodiments have been used to illustrate the principles and implementation methods of this disclosure. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications to this disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.

Claims

1. A welding system, characterized in that, The support roller welding positioning fixture is used to position the two half-wheel bodies (6) of the support roller (66) so that the two half-wheel bodies (6) are welded at the mating plane (w) by a single-sided welding double-sided forming process. The half-wheel body (6) is provided with a through hole along the axial direction. The two half-wheel bodies (6) are respectively the first half-wheel body (61) and the second half-wheel body (62). The support roller welding positioning fixture includes: The expansion sleeve (1) includes a cylindrical body (11) with a slot (12) on its side wall. The expansion sleeve (1) is configured to pass through the through holes of the two half-wheel bodies (6). The cylindrical body (11) includes a first section (111) and a second section (112) connected axially. The first section (111) and the second section (112) are respectively provided with a set of slots (12). A pad (2) is provided in the slot (12). The pad (2) is provided in two sets. Each set of slots (12) includes multiple slots (12) spaced apart along the circumferential direction. The two sets of pads (2) are respectively provided in the two sets of slots (12). The two sets of pads (2) are respectively used to abut against the inner wall of the through hole of the first half wheel (61) and the second half wheel (62). The radial outer side wall of the multiple pads (2) in each set of pads (2) is provided with a groove (21) extending along the circumferential direction. The mandrel assembly (3) is inserted into the inner hole of the cylinder (11) and the pad (2) is pressed against the inner wall of the through hole of the half wheel (6) to achieve tensioning of the two half wheels (6). The mandrel assembly (3) includes a first mandrel (31) and a second mandrel (32). An elastic ring is embedded in one of the plurality of said grooves (21); and The first spindle (4) includes a first housing (41) and a first drive component (42), a first flange (13) is fixedly connected to the first housing (41), and the first drive component (42) is disposed inside the first housing (41) and configured to drive the first spindle (31) to move axially; and / or the second spindle (5) includes a second housing (51), a second flange (52) and a second drive component (53), the second flange (52) is fixedly connected to the second housing (51) and is used to axially drive the second half-wheel body. (62) is limited at the second end, and the second drive component (53) is disposed in the second housing (51) and configured to drive the second spindle (32) to move axially; the first drive component (42) includes a cylinder (421) and a piston (422), the piston (422) being connected to the first spindle (31); the first drive component (42) and the second drive component (53) respectively drive the first spindle (31) and the second spindle (32) to move axially toward the direction close to the mating plane (w); The welding system is provided with a preheating station (81) and a welding station (82), the preheating station (81) and the welding station (82) being spaced apart, and the welding system further includes: The position transfer device (83) is configured to transfer the support roller (66) and the support roller welding positioning fixture from the preheating station (81) to the welding station (82). The feeding device (85) is configured to transport the half-wheel body (6) to a preset position; A visual recognition device (86) is configured to identify the half-wheel (6) at the preset position and acquire position information of the half-wheel (6); and The picking device (87) is configured to pick up the half-wheel body (6) according to the position information and transfer it to the preheating station (81).

2. The welding system according to claim 1, characterized in that, The inner radial wall of the pad (2) includes a slope (22) in the direction of inclination from the end of the cylinder (11) to the mating plane (w) toward the central axis (a) of the cylinder (11), and the outer wall shape of the mandrel assembly (3) matches the inner radial wall of the pad (2).

3. The welding system according to claim 1, characterized in that, The cross-section of the inner cavity of the expansion sleeve (1) and the cross-section of the mandrel assembly (3) are circular.

4. The welding system according to any one of claims 1 to 3, characterized in that, The first mandrel (31) and the second mandrel (32) are inserted into the inner hole from both ends of the cylinder (11), and the two sets of pads (2) are respectively pressed against the inner wall of the through hole of the first half wheel (61) and the second half wheel (62).

5. The welding system according to any one of claims 1 to 3, characterized in that, In use, the first end of the first half-wheel body (61) is connected to the first end of the second half-wheel body (62), the first flange (13) is provided at the first end of the first section (111), the second end of the first section (111) is connected to the second section (112), and the first flange (13) is used to limit the second end of the first half-wheel body (61) in the axial direction.

6. The welding system according to claim 1, characterized in that, Also includes: An induction coil (84), movably disposed at the preheating station (81), is configured to preheat the half-wheel body (6) at the docking plane (w); and A temperature detection component is configured to detect the preheating temperature at the docking plane (w).

7. A welding method based on the welding system according to any one of claims 1 to 6, characterized in that, The process includes a positioning step, a loading step, and a position transfer step. The positioning step includes: The expansion sleeve (1) is made to pass through the through holes of the two half-wheel bodies (6); Insert the mandrel assembly (3) into the inner hole of the cylinder (11); During the insertion of the mandrel assembly (3) into the inner hole, the first drive component (42) drives the first mandrel (31) to move axially from one end of the cylinder (11) toward the direction close to the mating plane (w), so that a set of pads (2) abut against the inner wall of the through hole of the first half-wheel body (61); the second drive component (53) drives the second mandrel (32) to move axially from the other end of the cylinder (11) toward the direction close to the mating plane (w), so that another set of pads (2) abut against the inner wall of the through hole of the second half-wheel body (62), thereby achieving tensioning of the two half-wheel bodies (6); The feeding step includes: The half-wheel body (6) is conveyed to the preset position by the feeding device (85); The visual recognition device (86) identifies the half-wheel body (6) at the preset position and collects the position information of the half-wheel body (6); The picking device (87) picks up the half-wheel body (6) according to the position information and transfers it to the preheating station (81). The location transfer step includes: The preheated support roller (66) is transferred from the preheating station (81) to the welding station (82). After welding, the support roller (66) is removed from the support member; The support component, which is now empty after being unloaded, is transferred from the welding station (82) to the preheating station (81) to await the next loading.

8. The welding method according to claim 7, characterized in that, In use, the first end of the first half-wheel body (61) is connected to the first end of the second half-wheel body (62). The first end of the first section (111) of the cylinder body (11) is provided with a first flange (13). The support wheel welding positioning fixture also includes a second spindle (5). The second spindle (5) includes a second housing (51) and a second flange (52). The second flange (52) is fixedly connected to the second housing (51). The positioning step also includes: The first flange (13) axially limits the second end of the first half-wheel body (61); and / or Move the second spindle (5) toward the second end of the second half-wheel body (62) so that the second flange (52) limits the second end of the second half-wheel body (62) in the axial direction.

9. The welding method according to claim 7, characterized in that, The welding system further includes an induction coil (84) and a temperature detection component, and the welding method further includes a preheating step, which includes: The induction coil (84) is moved to the docking plane (w) to preheat the half-wheel body (6); The preheating temperature at the docking plane (w) is detected by the temperature detection component, and the induction coil (84) is moved away when the preheating temperature reaches the preset temperature.

10. The welding method according to any one of claims 7 to 9, characterized in that, The welding method further includes: With the support roller (66) in the welding position (82), the welding torch (88) is moved to the mating plane (w) for welding; A weld deposit area is formed at the butt joint plane (w) by a single-sided welding double-sided forming process; After welding is completed, remove the welding torch (88).

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