A welding fixture for butt welding the barrel and cone of a wheat combine harvester

Abstract

This invention relates to a welding fixture for the butt welding of the cylinder and cone of a wheat combine harvester. It includes a lifting cylinder positioning device, a cylinder positioning assembly, a cone positioning assembly, and a detection assembly. The lifting cylinder positioning device is horizontally positioned and can be raised, lowered, and positioned. The cylinder positioning assembly and the cone positioning assembly are respectively installed beside the lifting cylinder positioning device and are used to position the cylinder and cone, respectively. The detection assembly is installed on one side of the lifting cylinder positioning device and is used to detect whether the welding between the cylinder and cone is qualified. The advantages of this invention are its compact structure and reasonable design. It solves the problem of sharing a single fixture for butt welding the cylinder and cone between axial flow roller harvesters and toothed roller harvesters, saving production space. Simultaneously, it solves the problem of online laser detection of the outer diameter runout of the cylinder and cone when sharing a single fixture between axial flow roller harvesters and toothed roller harvesters, ensuring both quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding fixture for butt welding the cylinder and cone of a wheat combine harvester. Background Technology

[0002] The production and manufacturing of harvesting machinery and equipment such as wheat harvesters face many challenges, especially the increasingly complex welding tooling process.

[0003] Currently, the welding fixtures for the longitudinal axial flow drum (a component used for wheat threshing in longitudinal axial flow threshing machines, consisting of a conical cone at the front and a long cylindrical body at the rear; this fixture is for assembling these two components. Then, another fixture is used to weld the blades and threshing rod seats. The drum assembly is installed inside the harvester's threshing body; through rotation, the blades, threshing rod seats, and threshing rods welded to it guide the straw and thresh the grain) are mostly dedicated and not subject to online inspection. Summary of the Invention

[0004] This invention provides a welding fixture for butt welding the cylinder and cone of a wheat combine harvester, aiming to solve the problems in the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] A welding fixture for butt welding of the cylinder and cone of a wheat combine harvester includes a lifting cylinder positioning device, a cylinder positioning assembly, a cone positioning assembly, and a detection assembly. The lifting cylinder positioning device is horizontally arranged and can be raised, lowered, and positioned. The cylinder positioning assembly and the cone positioning assembly are respectively installed next to the lifting cylinder positioning device and are used to position the cylinder and the cone respectively. The detection assembly is installed on one side of the lifting cylinder positioning device and is used to detect whether the welding between the cylinder and the cone is qualified.

[0007] The beneficial effects of the present invention are: during the welding process, the cylinder body and the cone are supported and raised and lowered by the lifting cylinder positioning device, and the cylinder body positioning assembly and the cone positioning assembly are used to position the cylinder body and the cone respectively so as to carry out the welding operation;

[0008] In addition, the welding quality of the cylinder and cone after welding can be inspected through the inspection assembly. The inspection is convenient and ensures the quality of the welding of the cylinder and cone.

[0009] This invention features a compact structure and a reasonable design, solving the problem of sharing a single tooling for docking the cylinder and cone between axial flow roller mills and rod-tooth roller mills, thus saving production space. Simultaneously, it solves the problem of online laser detection of the cylinder and cone's outer diameter runout using the same tooling for both axial flow roller mills and rod-tooth roller mills, ensuring both quality and production efficiency.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the lifting cylinder positioning device includes a main frame weld, a drive assembly, and a support assembly. The main frame weld is horizontally arranged. The drive assembly is installed below the main frame weld and its drive end is fixedly connected to the main frame weld, for driving the main frame weld to lift. The support assembly is installed on the main frame weld and is used to support the cylinder.

[0012] The advantage of adopting the above-mentioned further solution is that during the operation, the cylinder body is placed on the support component, and the main frame is welded and lifted by the drive component to facilitate the operation.

[0013] Furthermore, the support assembly includes multiple large roller frames, each of which is divided into two groups and fixedly installed in pairs at both ends of the main frame welded together.

[0014] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. Multiple large roller frames can be used to support the cylinder body of the axial flow roller machine to facilitate subsequent welding operations.

[0015] Furthermore, the support assembly also includes multiple small roller frames, each of which is divided into two groups and installed in pairs opposite each other on the main frame; the multiple small roller frames are respectively located between the multiple large roller frames, and each can be flipped up and down and positioned.

[0016] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. On the one hand, multiple large roller frames can be used to support the cylinder body of the axial flow roller machine; on the other hand, multiple small roller frames can be used to support the cylinder body of the rod tooth roller machine, so as to facilitate subsequent welding operations.

[0017] Furthermore, the cylinder positioning assembly includes a cylinder end positioning clamping device and a cylinder rod toothed disc hole positioning device. The cylinder end positioning clamping device is located at one end of the lifting cylinder positioning device; the cylinder rod toothed disc hole positioning device is located on the other side of the lifting cylinder positioning device.

[0018] The beneficial effect of adopting the above-mentioned further solution is that during operation, the corresponding parts of the cylinder can be positioned by using the cylinder end positioning clamping device and the cylinder rod tooth plate hole positioning device respectively, which is convenient for positioning, ensures the stability of the cylinder, and thus ensures the quality of welding.

[0019] Furthermore, the cylinder positioning assembly also includes a cylinder width disc positioning shaft positioning device, which is located at one end of the lifting cylinder positioning device and on one side of the cylinder end positioning clamping device.

[0020] The beneficial effect of adopting the above-mentioned further solution is that during operation, the corresponding parts of the cylinder can be positioned by the cylinder end positioning clamping device, the cylinder rod tooth plate hole positioning device, and the cylinder plate positioning shaft positioning device, respectively. Positioning is convenient, further ensuring the stability of the cylinder, thereby further ensuring the quality of welding.

[0021] Furthermore, the cone positioning assembly includes a cone large end disc hole positioning device and a cone blade end plate positioning device, wherein the cone blade end plate positioning device is located at the other end of the lifting cylinder positioning device; and the cone large end disc hole positioning device is located on the other side of the lifting cylinder positioning device.

[0022] The beneficial effect of adopting the above-mentioned further solution is that during operation, the corresponding parts of the cone can be positioned by the cone large end disc hole positioning device and the cone blade end plate positioning device, which is convenient for positioning, ensures the stability of the cone, and thus ensures the quality of welding.

[0023] Furthermore, the cone positioning assembly also includes a cone shaft positioning device, which is located at the other end of the lifting cylinder positioning device and is located on one side of the cone blade end plate positioning device.

[0024] The beneficial effect of adopting the above-mentioned further solution is that during operation, the corresponding parts of the cone can be positioned by the cone large end disc hole positioning device, the cone blade end plate positioning device and the cone shaft positioning device respectively, which is convenient for positioning, further ensures the stability of the cone, and thus further ensures the quality of welding.

[0025] Furthermore, the detection assembly includes a main laser detection device, which is installed on one side of the lifting cylinder positioning device and can be moved horizontally and positioned to approach or move away from the lifting cylinder positioning device.

[0026] The advantage of adopting the above-mentioned further solution is that after welding is completed, the welding quality of the cylinder and cone can be detected by the main laser detection device, realizing online detection, which is highly efficient and ensures the quality of welding.

[0027] Furthermore, the detection assembly also includes an auxiliary laser detection device, which is located on one side of the lifting cylinder positioning device and at one end of the main laser detection device.

[0028] The beneficial effect of adopting the above-mentioned further solution is that after welding is completed, the welding quality of the cylinder and cone can be inspected by the main laser inspection device to achieve online inspection; at the same time, further inspection can be carried out by the auxiliary laser inspection device, which is complete, efficient and ensures the quality of welding. Attached Figure Description

[0029] Figure 1 This is the front view of the present invention;

[0030] Figure 2 This is a top view of the present invention;

[0031] Figure 3 This is a side view of the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the lifting cylinder positioning device in this invention;

[0033] Figure 5 This is a front view of the lifting cylinder positioning device in this invention;

[0034] Figure 6 This is a three-dimensional structural diagram of the main laser detection device in this invention;

[0035] Figure 7 This is a front view of the main laser detection device in this invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Main frame welding; 2. Large roller frame; 3. Small roller frame; 4. End positioning and clamping device for cylinder body; 5. Positioning device for cylinder body rod tooth disc hole; 6. Positioning device for cylinder body disc positioning shaft; 7. Positioning device for cone large end disc hole; 8. Positioning device for cone blade end plate; 9. Positioning device for cone shaft; 10. Auxiliary laser detection device; 11. Base plate; 12. Lifting cylinder; 13. Guide cylinder; 14. Guide column; 15. Pneumatic control system; 16. Main body of slide table; 17. Drive cylinder; 18. Linear slide rail; 19. Slider; 20. Laser detection head. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element 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 of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] Example 1

[0043] like Figures 1 to 7 As shown, this embodiment provides a welding fixture for the butt welding of the cylinder and cone of a wheat combine harvester, including a lifting cylinder positioning device, a cylinder positioning assembly, a cone positioning assembly, and a detection assembly. The lifting cylinder positioning device is horizontally arranged and can be raised, lowered, and positioned. The cylinder positioning assembly and the cone positioning assembly are respectively installed next to the lifting cylinder positioning device and are used to position the cylinder and the cone respectively. The detection assembly is installed on one side of the lifting cylinder positioning device and is used to detect whether the welding between the cylinder and the cone is qualified.

[0044] During the welding process, the cylinder body and cone are supported and raised and lowered by the lifting cylinder positioning device. At the same time, the cylinder body positioning assembly and the cone positioning assembly are used to position the cylinder body and the cone respectively so as to carry out the welding operation.

[0045] In addition, the welding quality of the cylinder and cone after welding can be inspected through the inspection assembly. The inspection is convenient and ensures the quality of the welding of the cylinder and cone.

[0046] This embodiment features a compact structure and reasonable design, solving the problem of sharing a single tooling for docking the cylinder and cone between axial flow roller mills and rod-tooth roller mills, thus saving production space. Simultaneously, it resolves the issue of online laser detection of the cylinder and cone's outer diameter runout using the same tooling for both axial flow roller mills and rod-tooth roller mills, ensuring both quality and production efficiency.

[0047] Example 2

[0048] Based on Embodiment 1, in this embodiment, the lifting cylinder positioning device includes a main frame weld 1, a drive assembly, and a support assembly. The main frame weld 1 is horizontally arranged. The drive assembly is installed below the main frame weld 1 and its drive end is fixedly connected to the main frame weld 1, for driving the main frame weld 1 to rise and fall. The support assembly is installed on the main frame weld 1 for supporting the cylinder.

[0049] During operation, the cylinder body is placed on the support assembly, and the main frame is welded and lifted using the drive assembly to facilitate the operation.

[0050] Preferably, in this embodiment, the main frame welding 1 is a rectangular frame structure.

[0051] Preferably, this embodiment also includes a base plate 11, which is preferably a rectangular plate.

[0052] Preferably, in this embodiment, the drive assembly includes a plurality of lifting cylinders 12, which are evenly spaced and fixedly mounted on the base plate 11. Their telescopic ends extend vertically and are respectively welded and fixedly connected to the main frame weld 1. During operation, the plurality of lifting cylinders 12 extend and retract synchronously, driving the main frame weld 1 to rise and fall.

[0053] In addition, preferably two lifting cylinders 12 are provided, with the two lifting cylinders 12 being distributed opposite each other on the base plate 11, and their telescopic ends being fixedly connected to the main frame welded 1 near their two ends.

[0054] Preferably, in this embodiment, to increase the stability of the lifting and lowering of the main frame weld 1, multiple guide cylinders 13 can be vertically fixed at even intervals on the base plate 11. Multiple guide columns 14 are vertically installed inside the multiple guide cylinders 13, and the multiple guide columns 14 are slidably connected to the multiple guide cylinders 13, with the upper ends of the multiple guide columns 14 passing through the upper ends of the multiple guide cylinders 13 and being fixedly connected to the main frame weld 1. This design is reasonable and further ensures the stability of the lifting and lowering of the main frame weld 1.

[0055] In addition, the guide cylinders 13 and guide posts 14 are preferably four pairs and evenly spaced on the main frame weld 1.

[0056] Preferably, in this embodiment, a limiting device is installed on the base plate 11 to limit the lifting of the main frame welding 1. For example, the limiting device is a limiting plate, which is fixedly mounted on the base plate 11, with one end extending above the lifting of the main frame welding 1.

[0057] Example 3

[0058] Based on Embodiment 2, in this embodiment, the support component includes multiple large roller frames 2, and the multiple large roller frames 2 are divided into two groups and fixedly installed at both ends of the main frame welded 1 in pairs.

[0059] The solution has a simple structure and reasonable design. It utilizes multiple large roller frames 2 to support the cylinder body of the axial flow roller machine, which is convenient for subsequent welding operations.

[0060] Preferably, in this embodiment, the number of the above-mentioned large roller frame 2 is four. The four large roller frames 2 are respectively fixedly installed at the four corners of the main frame welded 1, which is reasonably distributed to ensure the stability of the cylinder body.

[0061] In addition, each large roller frame 2 includes a fixed seat and a large roller. The fixed seat is fixedly installed on the main frame welded 1, and the large roller is rotatably installed on the fixed seat.

[0062] Example 4

[0063] Based on Embodiment 3, in this embodiment, the support assembly further includes multiple small roller frames 3, which are divided into two groups and installed on the main frame welded 1 in pairs; the multiple small roller frames 3 are respectively located between the multiple large roller frames 2, and can be flipped up and down and positioned respectively.

[0064] The scheme has a simple structure and reasonable design. On the one hand, multiple large roller frames 2 can be used to support the cylinder body of the axial flow roller machine; on the other hand, multiple small roller frames 3 can be used to support the cylinder body of the rod tooth roller machine, so as to facilitate subsequent welding operations.

[0065] Preferably, in this embodiment, the number of the above-mentioned small roller frames 3 is four. The four small roller frames 3 are installed on the main frame welded 1 in pairs, located in the area enclosed by the four large roller frames 2. The distribution is reasonable, which ensures the stability of the cylinder body and can be adapted to the support of two different machine models.

[0066] In addition, each small roller frame 3 includes a flipping seat and a small roller. The flipping seat is installed on the main frame welded 1 and can be flipped up and down and positioned. The small roller is installed on the flipping seat and rotates.

[0067] Furthermore, one side of the bottom of the flip seat is rotatably connected to the main frame 1, and it can be rotated to the other side of its bottom to be attached to the main frame 1 and fixed by bolts.

[0068] During operation, when it is necessary to position the cylinder of the axial flow roller mill, the four small roller frames 3 need to be flipped downwards to make room so that the four large roller frames 2 can support the cylinder of the axial flow roller mill.

[0069] When it is necessary to position the cylinder of the rod-tooth roller machine, the four small roller frames 3 need to be flipped upward and positioned so that the small roller frames 3 support the cylinder of the rod-tooth roller machine. At this time, the four large roller frames 2 will not affect the operation.

[0070] Example 5

[0071] Based on the above embodiments, in this embodiment, the cylinder positioning assembly includes a cylinder end positioning clamping device 4 and a cylinder rod toothed disc hole positioning device 5. The cylinder end positioning clamping device 4 is located at one end of the lifting cylinder positioning device; the cylinder rod toothed disc hole positioning device 5 is located on the other side of the lifting cylinder positioning device.

[0072] During operation, the corresponding parts of the cylinder can be positioned using the cylinder end positioning clamping device 4 and the cylinder rod tooth plate hole positioning device 5, respectively. Positioning is convenient and ensures the stability of the cylinder, thereby ensuring the quality of welding.

[0073] Preferably, in this embodiment, the cylinder end positioning and clamping device 4 includes a cylinder and a push plate. The cylinder is fixedly mounted on a base on the base plate 11, and its telescopic end extends vertically and is fixedly connected to the horizontally arranged push plate. During operation, the cylinder extends and retracts, driving the push plate to move up and down to clamp the corresponding part of the cylinder.

[0074] Preferably, in this embodiment, the above-mentioned cylinder rod toothed disc hole positioning device 5 includes a cylinder and a positioning head. The cylinder is fixedly mounted on a base on the base plate 11, and its telescopic end is vertically upward and fixedly connected to the positioning head. During operation, the cylinder telescopically extends and retracts, driving the positioning head to move up and down to position the corresponding part of the cylinder.

[0075] Example 6

[0076] Based on Embodiment 5, in this embodiment, the cylinder positioning assembly further includes a cylinder width disc positioning shaft positioning device 6, which is located at one end of the lifting cylinder positioning device and on one side of the cylinder end positioning clamping device 4.

[0077] During operation, the cylinder end positioning clamping device 4, the cylinder rod tooth disc hole positioning device 5, and the cylinder disc positioning shaft positioning device 6 can be used to position the corresponding parts of the cylinder, which is convenient and further ensures the stability of the cylinder, thereby further ensuring the quality of welding.

[0078] Preferably, in this embodiment, the above-mentioned cylinder body disc positioning shaft positioning device 6 includes a frame, two rollers and a rotatable pinion positioning plate. The frame is fixed on the base plate 11, and the two rollers are mounted on the frame in a relatively rotatable manner. The pinion positioning plate is mounted on the frame in a rotatable manner (the pinion positioning plate is positioned by bolts after being rotated to the set position). The two rollers and the pinion positioning plate are used to position the corresponding parts of the cylinder body.

[0079] Example 7

[0080] Based on the above embodiments, in this embodiment, the cone positioning assembly includes a cone large end disc hole positioning device 7 and a cone blade end plate positioning device 8. The cone blade end plate positioning device 8 is located at the other end of the lifting cylinder positioning device; the cone large end disc hole positioning device 7 is located on the other side of the lifting cylinder positioning device.

[0081] During operation, the cone's large end disc hole positioning device 7 and the cone blade end plate positioning device 8 can be used to position the corresponding parts of the cone respectively. Positioning is convenient, ensuring the stability of the cone and thus ensuring the quality of welding.

[0082] Preferably, in this embodiment, the cone-shaped large end disc hole positioning device 7 includes a cylinder and a positioning head. The cylinder is fixedly mounted on a base on the base plate 11, with its telescopic end pointing vertically upward and fixedly connected to the positioning head. During operation, the cylinder extends and retracts, causing the positioning head to move up and down to position the corresponding part of the cone.

[0083] Preferably, in this embodiment, the cone blade end plate positioning device 8 includes a cylinder and a positioning plate. The cylinder is fixedly mounted on a base on the base plate 11, with its telescopic end pointing vertically upward and fixedly connected to the positioning plate. During operation, the cylinder extends and retracts, causing the positioning plate to move up and down to position the corresponding part of the cone.

[0084] Example 8

[0085] Based on Embodiment 7, in this embodiment, the cone positioning assembly further includes a cone shaft positioning device 9, which is located at the other end of the lifting cylinder positioning device and is located on one side of the cone blade end plate positioning device 8.

[0086] During operation, the cone's large end disc hole positioning device 7, the cone blade end plate positioning device 8, and the cone shaft positioning device 9 can be used to position the corresponding parts of the cone respectively. Positioning is convenient and further ensures the stability of the cone, thereby further ensuring the quality of welding.

[0087] Preferably, in this embodiment, the cone shaft positioning device 9 includes a frame and two rollers. The frame is fixed on the base plate 11, and the two rollers are mounted on the frame in a relatively rotatable manner to position the corresponding part of the cone.

[0088] Example 9

[0089] Based on the above embodiments, in this embodiment, the detection assembly includes a main laser detection device, which is installed on one side of the lifting cylinder positioning device and can be moved horizontally and positioned to approach or move away from the lifting cylinder positioning device.

[0090] After welding is completed, the welding quality of the cylinder and cone can be inspected by the main laser inspection device, realizing online inspection, which is highly efficient and ensures the quality of welding.

[0091] Preferably, in this embodiment, the main laser detection device includes a slide body 16 and a drive cylinder 17. Two linear slide rails 18 are fixedly installed horizontally on the base plate 11, and sliders 19 are installed horizontally on the two linear slide rails 18 respectively. The slide body 16 is fixedly installed on the two sliders 19, and multiple laser detection heads 20 are fixedly installed on it at even intervals.

[0092] In addition, the drive cylinder 17 is fixedly installed on the side of the slide body 16 away from the main frame weld 1, and its telescopic end extends and retracts horizontally and is fixedly connected to the slide body 16, for driving the slide body 16 to slide horizontally to approach or move away from the main frame weld 1.

[0093] Preferably, in this embodiment, there are three laser detection heads 20, which are respectively fixedly installed at both ends and the middle of the top of the slide body 16.

[0094] Preferably, in this embodiment, the drive cylinder 17 is fitted with a protective cover.

[0095] In addition, limit plates are fixedly installed at both ends of the two linear slide rails 18.

[0096] Example 10

[0097] Based on Embodiment 9, in this embodiment, the detection assembly further includes an auxiliary laser detection device 10, which is located on one side of the lifting cylinder positioning device and at one end of the main laser detection device.

[0098] After welding is completed, the welding quality of the cylinder and cone can be inspected by the main laser inspection device to achieve online inspection; at the same time, further inspection can be carried out by the auxiliary laser inspection device 10, which is complete, efficient and ensures the quality of welding.

[0099] Preferably, in this embodiment, the auxiliary laser detection device 10 includes a mounting base and a laser detection head. The mounting base is fixedly installed on the base plate 11 at the end of the main frame welded 1, and the laser detection head is fixedly installed on the mounting base.

[0100] Preferably, in this embodiment, the base plate 11 is fixedly installed with a pneumatic control system 15 (equivalent to a controller), and each of the above electronic components is connected to the pneumatic control system 15, and the pneumatic control system 15 controls the operation of each component.

[0101] It should be noted that the laser detection head 20 mentioned above uses existing technology, and its specific structure and principle will not be described in detail here.

[0102] The welding process of this invention is as follows:

[0103] First, operate the pneumatic control system 15 to drive the main laser detection device to the correct position using the drive cylinder 17. Then, operate the pneumatic control system 15 again to raise the main frame welding 1 to its highest point using the two lifting cylinders 12. Next, operate the multiple small roller frames 3 to the correct position and lock them in place (if it is a toothed roller machine, flip it up and stand upright; if it is an axial flow roller machine, flip it down and lay it down). Then, lift the welded cylinder welding (with the end flange positioning shaft) and place it on the four large roller frames 2 (axial flow roller machine) or four small roller frames 3 of the main frame welding 1. (On the rod-tooth roller machine model), the welded cone body is then lifted, and the large-end shaft is inserted into the flange hole at one end of the cylinder body weld. Then, the pneumatic control system 15 is operated, using two lifting cylinders 12 to lower the main frame weld 1 to a designated position. At this point, the flange positioning shaft at one end of the cylinder body weld falls onto the cylinder body flange positioning shaft positioning device 6. The small gear positioning plate of the cylinder body flange positioning shaft positioning device 6 is flipped over to fix the small gear of the cylinder body flange positioning shaft. The purpose is to position the flange positioning shaft of the cylinder body weld in the radial direction. At this time, the cone body weld... The small end shaft falls precisely onto the cone shaft positioning device 9. Then, operate the pneumatic control system 15 to flip the positioning pin seat of the cylinder rod tooth flange hole positioning device 5 to the correct position. Insert the hand pin of this device into the flange hole on the outside of the cylinder of the rod tooth roller model to fix the radial position of the cylinder of the rod tooth roller model (if it is an axial flow roller model, this step is not performed, and the cylinder rod tooth flange hole positioning device 5 is in the open state). Then, operate the pneumatic control system 15 to flip the cone blade end plate positioning device 8 to the correct position to fix the cone blade end plate. The purpose is to fix the cone blade end plate. First, determine the radial position of the cone weld (this step is only performed on axial flow roller models, not on gear roller models). Then, operate the pneumatic control system 15 to flip the cone large end disc hole positioning device 7 to the correct position and insert its hand pin into the cone large end disc hole to fix the radial position of the cone weld (this step is only performed on gear roller models, not on axial flow roller models). Then, operate the pneumatic control system 15 to flip the cylinder end positioning clamping device 4 to the correct position and clamp the end of the cylinder weld to the correct position to fix the axial position of the cylinder weld.Then, clamp the clamping device of the cone shaft positioning device 9, and then evenly spot-fix at least 6 weld points along the circumference of the joint between the cylinder and the cone. Then, open the clamping device of the cone shaft positioning device 9, the pinion positioning plate of the cylinder flange positioning shaft positioning device 6, the cylinder flange positioning shaft positioning device 6 (for rod and tooth roller models, operate this step), and the cone blade end plate positioning device 8. Then, operate the pneumatic control system 15 and use the two lifting cylinders 12 to raise the main frame weld 1 to the highest position. Then, operate the pneumatic control system 15 to open the two limit devices to the lowest position. Then, operate the pneumatic control system 15 and use the two lifting cylinders 12 to lower the main frame weld 1 to the lowest position. During the descent, the spot-fixed cylinder and cone weld will fall on the cone shaft positioning device 9 and the cylinder flange positioning shaft positioning device 6 and stop. At this time, the spot-fixed cylinder and cone weld will separate from the main frame weld 1. Then, operate the pneumatic control system 15, using the drive cylinder 17 to drive the main laser detection device forward to the correct position (this is the position for the toothed roller machine model; if it is an axial flow roller machine model, this step is not performed, and the main laser detection device remains in the original position). Then, rotate the welding of the cylinder body and the cone, using the three laser detection heads of the main laser detection device to detect the runout of the three outer circles of the cylinder body weld, and using the laser detection head of the auxiliary laser detection device 10 to detect the runout of the outer circle of the cone weld. After reading the values ​​on the displays of the main laser detection device and the auxiliary laser detection device 10, if the result is qualified, the welded part is lifted off the fixture and its butt welds are fully welded on the automatic welding equipment; if the result is unqualified, further processing is performed (here, "further processing" refers to the welder using an angle grinder to grind open the corresponding weld points, lightly tapping them with a rubber hammer, and then fixing them with the weld points) until it is qualified, then it is lifted off the fixture again and its welds are welded.

[0104] The longitudinal axial flow drum body and cone welding fixture provided by this invention enables the joint welding of the drum body and cone of two types of wheat harvesters: axial flow drum type and toothed drum type (the toothed drum type is a type of longitudinal axial flow drum platform, but the drum body is thinner and has a flange welded on it. After the drum body with flange welded on it and the cone are welded on this fixture, they are removed, toothed, and installed into the threshing machine of the harvester for guiding grass and threshing). A single fixture is used for the joint welding of the drum body and cone. In addition, a Keyence laser detection system is installed to realize online detection of the outer circle runout of the drum body and the cone.

[0105] It should be noted that all electronic components involved in this invention adopt existing technology, and all the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is existing technology.

[0106] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0107] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for butt welding the barrel and cone of a wheat combine harvester, characterized in that: The device includes a lifting cylinder positioning device, a cylinder positioning assembly, a cone positioning assembly, and a detection assembly. The lifting cylinder positioning device is horizontally positioned and can be raised, lowered, and positioned. The cylinder positioning assembly and the cone positioning assembly are respectively installed next to the lifting cylinder positioning device and are used to position the cylinder and the cone, respectively. The detection assembly is installed on one side of the lifting cylinder positioning device and is used to detect whether the welding between the cylinder and the cone is qualified. The lifting cylinder positioning device includes a main frame weld (1), a drive assembly and a support assembly. The main frame weld (1) is horizontally arranged. The drive assembly is installed below the main frame weld (1) and its drive end is fixedly connected to the main frame weld (1) for driving the main frame weld (1) to rise and fall. The support assembly is installed on the main frame weld (1) for supporting the cylinder. The support assembly includes multiple large roller frames (2), each of which is divided into two groups and fixedly installed at both ends of the main frame welded together (1) in pairs. The support assembly also includes multiple small roller frames (3), each of which is divided into two groups and installed on the main frame welded (1) in pairs; the multiple small roller frames (3) are located between the multiple large roller frames (2), and they can be flipped up and down and positioned respectively; The cylinder positioning assembly includes a cylinder end positioning clamping device (4) and a cylinder rod toothed disc hole positioning device (5). The cylinder end positioning clamping device (4) is located at one end of the lifting cylinder positioning device; the cylinder rod toothed disc hole positioning device (5) is located on the other side of the lifting cylinder positioning device. The cylinder end positioning clamping device (4) includes a cylinder and a push plate; the cylinder rod toothed disc hole positioning device (5) includes a cylinder and a positioning head. The cylinder positioning assembly also includes a cylinder web plate positioning shaft positioning device (6), which is located at one end of the lifting cylinder positioning device and on one side of the cylinder end positioning clamping device (4); the cylinder web plate positioning shaft positioning device (6) includes a frame, two rollers and a rotatable small gear positioning plate. The cone positioning assembly includes a cone large end disc hole positioning device (7) and a cone blade end plate positioning device (8). The cone blade end plate positioning device (8) is located at the other end of the lifting cylinder positioning device. The cone large end disc hole positioning device (7) is located on the other side of the lifting cylinder positioning device. The cone large end disc hole positioning device (7) includes a cylinder and a positioning head. The cone blade end plate positioning device (8) includes a cylinder and a positioning plate. The cone positioning assembly also includes a cone shaft positioning device (9), which is located at the other end of the lifting cylinder positioning device and is located on one side of the cone blade end plate positioning device (8); the cone shaft positioning device (9) includes a frame and two rollers.

2. The welding fixture for butt welding the barrel and cone of a wheat combine harvester according to claim 1, characterized in that: The detection assembly includes a main laser detection device, which is installed on one side of the lifting cylinder positioning device and can be moved horizontally and positioned to approach or move away from the lifting cylinder positioning device.

3. The welding fixture for butt welding the barrel and cone of a wheat combine harvester according to claim 2, characterized in that: The detection assembly also includes an auxiliary laser detection device (10), which is located on one side of the lifting cylinder positioning device and at one end of the main laser detection device.

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