Harvester cone welding auxiliary tool

Abstract

The utility model belongs to the technical field of welding auxiliary tools, and particularly relates to a harvester cone welding auxiliary tool which comprises a workbench, a welding base is arranged at the position, close to the center, of the top of the workbench, through shaft holes are correspondingly formed in the welding base and the workbench in a penetrating mode, and the through shaft holes are matched with a transmission shaft. An upper clamping assembly and a lower clamping assembly which are used for clamping a transmission shaft are symmetrically arranged on the two sides of the workbench, the upper clamping assembly is fixedly connected with the workbench through a supporting frame, and the lower clamping assembly is fixedly connected with the workbench through a supporting leg frame. A fixing assembly used for clamping and fixing the cone shell is arranged at the position, located above the welding base, of the workbench. The cone welding fixture is reasonable in structural design and convenient to operate, all welded parts are accurately positioned and fixed, and the cone welding quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding auxiliary tooling, and particularly relates to a welding auxiliary tooling for a harvester cone body. Background Art

[0002] With the rapid development of agricultural modernization, the application of combine harvesters in agricultural production is becoming more and more extensive. As one of the core components of the combine harvester, the performance of the threshing system is directly related to the working efficiency and harvesting quality of the harvester. The cone body plays a key role in the threshing system. Therefore, the quality of the processing of the cone body of the combine harvester threshing system is crucial.

[0003] During the production process of the cone body, it is usually necessary to weld the cone shell, the transmission shaft and the bottom cover together, which requires the use of a cone welding auxiliary tooling. However, most of the existing cone welding auxiliary toolings are simple toolings, which are difficult to ensure the quality. Most of the positioning is manual, and the operation is time-consuming and laborious. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a welding auxiliary tooling for a harvester cone body with reasonable structural design, convenient operation, precise positioning and fixing of all participating welded parts, and ensuring the quality of cone welding.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A welding auxiliary tooling for a harvester cone body includes a workbench. A welding seat is arranged at a position close to the center on the top of the workbench. Through shaft holes are correspondingly arranged through the welding seat and the workbench, and the through shaft holes are matched with the transmission shaft. Upper clamping components and lower clamping components for clamping the transmission shaft are symmetrically arranged on both sides of the workbench. The upper clamping components are fixedly connected to the workbench through support frames, and the lower clamping components are fixedly connected to the workbench through support leg frames. A fixing component for clamping and fixing the cone shell is arranged above the welding seat on the workbench.

[0007] The following is the further optimization of the above technical solutions by the utility model:

[0008] Further optimization: The upper clamping component includes a first pneumatic telescopic rod fixedly installed on the top of the support frame. The telescopic end of the first pneumatic telescopic rod penetrates through the top of the support frame and extends to its lower part and is fixedly connected with an installation rod. An upper clamping block is fixedly installed at a position close to the center of the bottom of the installation rod. An upper positioning groove is opened on one side of the upper clamping block away from the installation rod, and the upper positioning groove is matched with one end of the transmission shaft.

[0009] Further optimization: At positions near both ends of the bottom of the mounting rod, limiting rods are symmetrically and fixedly connected. On both inner walls of the support frame, two limiting blocks are symmetrically arranged. Limiting holes are penetratingly opened at the tops of the limiting blocks, and each positioning rod slidably penetrates through the corresponding limiting hole.

[0010] Further optimization: The lower clamping assembly includes a second pneumatic telescopic rod fixedly installed on the support leg frame. The telescopic end of the second pneumatic telescopic rod is fixedly installed with a lower clamping block. A lower positioning groove is opened on the side of the lower clamping block away from the second pneumatic telescopic rod, and the lower positioning groove matches the other end of the transmission shaft.

[0011] Further optimization: The fixing assembly includes a U-shaped frame fixedly installed on the support frame. Above the U-shaped frame, a fixed arc-shaped clamping plate is fixedly arranged. One end of the fixed arc-shaped clamping plate is hinged with a movable arc-shaped clamping plate, and the end of the movable arc-shaped clamping plate away from the hinge is detachably connected to the fixed arc-shaped clamping plate through a connecting member.

[0012] Further optimization: The connecting member includes connecting plates symmetrically arranged on the upper and lower sides of the end of the fixed arc-shaped clamping plate. A connecting block is slidably arranged between the two connecting plates. One end of the connecting block is fixedly connected to the movable arc-shaped clamping plate. Connecting holes are penetratingly arranged corresponding to the two connecting plates and the connecting block, and a positioning pin is movably penetrated through the connecting hole.

[0013] Further optimization: The welding seat includes a bottom plate fixedly installed on the top of the workbench. A support plate is arranged directly above the bottom plate, and the bottom plate and the support plate are connected together by at least four bolts evenly arranged.

[0014] Further optimization: The diameter of the support plate is 1 cm - 2 cm smaller than the minimum diameter of the cone shell, and the diameter of the bottom plate is larger than the minimum diameter of the cone shell.

[0015] Further optimization: The tooling further includes two bottom cover positioning components with the same structure. The bottom cover positioning component includes a positioning rod, and the length of the positioning rod is greater than the maximum diameter of the cone shell.

[0016] Further optimization: At least two magnet stones are evenly arranged at the bottom of the positioning rod. The maximum distance between the two magnet stones is less than the maximum diameter of the cone shell, and the thickness of the magnet stone is consistent with the set height of the bottom cover from the bottom of the cone shell.

[0017] The utility model matches the welding seat and the through-axis hole on the workbench with the transmission shaft, providing precise positioning for the transmission shaft. Not only can the axis of the transmission shaft be made to coincide with the axis of the cone shell as much as possible, improving the welding precision, but also during the welding process, the transmission shaft can stably stay in the correct position, avoiding affecting the welding quality due to position deviation.

[0018] The utility model clamps the transmission shaft from both sides through the upper clamping assembly and the lower clamping assembly, thereby further enhancing the stability of the transmission shaft, thereby effectively preventing the transmission shaft from shaking or displacing during the welding process and ensuring the welding quality; at the same time, the symmetrically arranged clamping assemblies can make the transmission shaft evenly stressed and avoid deformation caused by uneven stress.

[0019] The utility model clamps and fixes the cone shell by a fixing component, thereby ensuring the position stability of the cone shell during welding, and combined with the positioning of the transmission shaft, can achieve accurate docking between the cone shell and the transmission shaft, thereby improving the accuracy and reliability of welding.

[0020] By adopting the above technical scheme, the utility model has reasonable structural design, convenient operation, and can accurately position and fix all welding parts, thereby ensuring the quality of cone welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model;

[0022] Figure 2 It is a top view of the fixing assembly in the first embodiment of the utility model;

[0023] Figure 3 It is a top view of the welding seat in the first embodiment of the utility model;

[0024] Figure 4 It is a side view of the bottom cover positioning assembly in the second embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the use status of the second embodiment of the utility model.

[0026] In the figure: 1-workbench; 2-welding seat; 21-bottom plate; 22-support plate; 3-through-axis hole; 4-upper clamping assembly; 41-first pneumatic telescopic rod; 42-mounting rod; 43-upper clamping block; 44-limit rod; 45-limit block; 5-lower clamping assembly; 51-second pneumatic telescopic rod; 52-lower clamping block; 6-support frame; 7-support leg frame; 8-fixing assembly; 81-U-shaped frame; 82-fixed arc splint; 83-movable arc splint; 84-connecting piece; 841-connecting plate; 842-connecting block; 843-locating pin; 9-bottom cover positioning assembly; 91-locating rod; 92-magnet stone. DETAILED DESCRIPTION

[0027] Embodiment 1:

[0028] like Figures 1 - 3As shown, a harvester cone welding auxiliary tooling includes a workbench 1, a welding seat 2 is arranged near the center position on the top of the workbench 1, and corresponding through-axis holes 3 are arranged on the welding seat 2 and the workbench 1, and the through-axis holes 3 match the transmission shaft. An upper clamping assembly 4 and a lower clamping assembly 5 for clamping the transmission shaft are symmetrically arranged on both sides of the workbench 1, the upper clamping assembly 4 is fixedly connected to the workbench 1 through a support frame 6, and the lower clamping assembly 5 is fixedly connected to the workbench 1 through a support leg frame 7. The workbench 1 is located above the welding seat 2 and is provided with a fixing assembly 8 for clamping and fixing the cone shell.

[0029] With this design, first, the through-shaft hole 3 on the welding seat 2 and the workbench 1 matches the drive shaft, providing precise positioning for the drive shaft, which not only makes the axis of the drive shaft coincide with the axis of the cone shell as much as possible, thereby improving the welding accuracy, but also during the welding process, the drive shaft can be stably in the correct position, avoiding affecting the welding quality due to position deviation.

[0030] Secondly, the upper clamping assembly 4 and the lower clamping assembly 5 clamp the drive shaft from both sides, further enhancing the stability of the drive shaft, thereby effectively preventing the drive shaft from shaking or displacing during welding and ensuring the welding quality; at the same time, the symmetrically arranged clamping assemblies can make the drive shaft evenly stressed and avoid deformation caused by uneven stress.

[0031] Thirdly, the fixing assembly 8 clamps and fixes the cone shell, ensuring the position stability of the cone shell during welding. Combined with the positioning of the transmission shaft, it can achieve precise docking between the cone shell and the transmission shaft, thereby improving the accuracy and reliability of welding.

[0032] The support frame 6 and the support leg frame 7 are both formed by welding steel pipes and steel plates, and the overall structure of the support frame 6 and the support leg frame 7 is square.

[0033] With such a design, firstly, the support frame 6 and the support leg frame 7 are of a square structure, which has a stable geometric shape, is evenly stressed, and is not easily deformed, so that it can withstand various forces during cone welding and provide reliable support, and the steel pipe is resistant to bending and torsion, and the steel plate has planar stability. After welding, it is strong and can bear large loads; secondly, the square structure is neatly arranged, and the tooling position can be efficiently arranged in a limited space, thereby improving space utilization; thirdly, the regular shape makes it easy to determine the position and direction during installation, reduces errors, and thus ensures the accuracy of the cone welding position.

[0034] The upper clamping assembly 4 includes a first pneumatic telescopic rod 41 fixedly mounted on the top of the support frame 6 . The telescopic end of the first pneumatic telescopic rod 41 passes through the top of the support frame 6 and extends to the bottom thereof and is fixedly connected to a mounting rod 42 .

[0035] A clamping block 43 is fixedly installed near the center of the bottom of the mounting rod 42. A positioning groove is formed on the side of the clamping block 43 away from the mounting rod 42, and the positioning groove is matched with one end of the transmission shaft.

[0036] With such a design, first, by fixing the clamping block 43 at the bottom of the mounting rod 42 near the center, the clamping force is concentrated on the transmission shaft and the force distribution is uniform, avoiding eccentric instability. Second, through the matching of the positioning groove with one end of the transmission shaft, it closely fits the shape of the transmission shaft and restricts its sliding, rotation or offset from multiple directions. This provides stable clamping conditions for the welding of the transmission shaft, ensures that it does not move during welding, improves the welding accuracy and quality, and also facilitates the smooth progress of the welding operation, reducing welding defects and safety risks caused by shaking.

[0037] Limit rods 44 are symmetrically and fixedly connected to the bottom of the mounting rod 42 near both ends. Two limit blocks 45 are symmetrically arranged on the inner walls of both sides of the support frame 6. Limit holes are formed through the tops of the limit blocks 45, and each positioning rod 91 slides through the corresponding limit hole.

[0038] With such a design, first, the cooperation between the limit rods 44 and the limit holes enables the mounting rod 42 to always maintain a vertical movement trajectory during the up and down movement, without deviation or shaking, so that the clamping block 43 accurately matches and clamps one end of the transmission shaft, and thus the clamping accuracy and stability can be guaranteed.

[0039] Second, through the cooperation between the limit blocks 45 and the positioning rods 91 through the limit holes, the moving position of the mounting rod 42 in the vertical direction is limited, so that the clamping block 43 can accurately stay at the preset height position, achieve precise docking with one end of the transmission shaft, and thus keep the position of the transmission shaft accurate during welding and other operations, improving the welding quality and the accuracy of other processing operations.

[0040] The lower clamping assembly 5 includes a second pneumatic telescopic rod 51 fixedly installed on the support leg frame 7, and a lower clamping block 52 is fixedly installed at the telescopic end of the second pneumatic telescopic rod 51.

[0041] A lower positioning groove is formed on the side of the lower clamping block 52 away from the second pneumatic telescopic rod 51, and the lower positioning groove is matched with the other end of the transmission shaft.

[0042] With such a design, through the matching of the lower positioning groove with the other end of the transmission shaft, it closely fits the shape of the transmission shaft and restricts its sliding, rotation or offset from multiple directions. This provides stable clamping conditions for the welding of the transmission shaft, ensures that it does not move during welding, improves the welding accuracy and quality, and also facilitates the smooth progress of the welding operation, reducing welding defects and safety risks caused by shaking.

[0043] The fixing component 8 includes a U-shaped frame 81 fixedly installed on the support frame 6. Above the U-shaped frame 81, a fixed arc-shaped clamping plate 82 is fixedly arranged, and one end of the fixed arc-shaped clamping plate 82 is hinged with a movable arc-shaped clamping plate 83.

[0044] The end of the movable arc-shaped clamping plate 83 away from the hinge is detachably connected to the fixed arc-shaped clamping plate 82 through a connecting piece 84.

[0045] The connecting piece 84 includes connecting plates 841 symmetrically arranged on the upper and lower sides of the end of the fixed arc-shaped clamping plate 82. A connecting block 842 is slidably arranged between the two connecting plates 841, and one end of the connecting block 842 is fixedly connected to the movable arc-shaped clamping plate 83.

[0046] Corresponding connection holes are penetrated through the two connecting plates 841 and the connecting block 842, and a positioning pin 843 is movably inserted into the connection holes.

[0047] With such a design, firstly, the hinged design of the movable arc-shaped clamping plate is convenient for opening and closing, facilitating the insertion or removal of the object to be fixed, improving work efficiency. Moreover, the connecting piece 84 is simple and practical in design. The sliding fit of the connecting block 842 and the insertion of the positioning pin 843 can quickly achieve connection and disassembly, without the need for complex tools and operation steps, thus greatly improving work efficiency and saving a large amount of time during mass production or frequent replacement of the cone shell for welding.

[0048] Secondly, both the fixed arc-shaped clamping plate 82 and the movable arc-shaped clamping plate 83 are attached to the cone shell, increasing the contact area and improving the fixing stability to prevent sliding or rotation during welding. At the same time, the hinge and the connecting piece 84 act in coordination. The hinge ensures the relative position stability, and the sliding fit of the connecting block 842 and the positioning pin 843 further enhances the firmness, enabling the fixing component 8 to evenly press the cone shell in all directions to prevent loosening caused by external forces. In addition, the fixing method of the positioning pin 843 is simple and reliable, capable of withstanding large tensile and shear forces to ensure that the arc-shaped clamping plates do not separate. The structures of the connecting plates 841 and the connecting block 842 also increase the fixing strength and stability, enabling the component to withstand the vibration and impact force during welding. Therefore, during the cone welding process, the firmly fixed component can keep the cone shell in a stable position, avoiding deviation of the welding position due to slight shaking or displacement. Precise positioning helps to achieve high-quality welding, ensuring the uniformity and accuracy of the weld seam and improving the welding precision.

[0049] The welding seat 2 includes a bottom plate 21 fixedly installed on the top of the workbench 1. A support plate 22 is arranged directly above the bottom plate 21, and the bottom plate 21 and the support plate 22 are connected together through at least four bolts evenly arranged.

[0050] The diameter of the support plate 22 is 1 cm - 2 cm smaller than the minimum diameter of the cone shell, and the diameter of the bottom plate 21 is larger than the minimum diameter of the cone shell.

[0051] With such a design, not only can the conical shell quickly and accurately find the appropriate position during placement to achieve precise positioning, but also it can effectively avoid damaging the workbench 1 during the welding process.

[0052] Embodiment 2: As Figures 4 - 5 shown, the rest of Embodiment 2 is the same as that of Embodiment 1, except that: it further includes two bottom cover positioning components 9 with the same structure. The bottom cover positioning component 9 includes a positioning rod 91, and the length of the positioning rod 91 is greater than the maximum diameter of the conical shell.

[0053] At least two magnet stones 92 are evenly arranged at the bottom of the positioning rod 91. The maximum distance between the two magnet stones 92 is less than the maximum diameter of the conical shell, and the thickness of the magnet stone 92 is consistent with the set height of the bottom cover from the bottom of the conical shell.

[0054] With such a design, firstly, the length of the positioning rod 91 is greater than the maximum diameter of the conical shell, enabling the positioning rod 91 to position the bottom cover outside the conical shell, thereby ensuring that the bottom cover maintains an accurate relative position with the bottom of the conical shell during the installation process and improving the installation accuracy of the bottom cover.

[0055] Secondly, the magnet stones 92 arranged at the bottom of the positioning rod 91 can adsorb the bottom cover, keeping the bottom cover stable during the welding process and improving the welding quality and stability.

[0056] Thirdly, the thickness of the magnet stone 92 is consistent with the set height of the bottom cover from the conical bottom, so that the bottom cover can be automatically adjusted to the correct height position when being adsorbed, further improving the installation accuracy and consistency of the bottom cover.

[0057] In addition, the operator can hold the positioning rod 91 and accurately place the bottom cover at the bottom of the conical shell without complex measurement and adjustment, thereby improving the installation efficiency and reducing the installation time and labor costs.

[0058] During use, firstly, pull out the positioning pin 843 in the connection hole of the fixing component 8, open the movable arc-shaped clamping plate 83, then place the conical shell on the support plate 22 of the welding seat 2, and then rotate the fixed arc-shaped clamping plate 82 to make it approach the conical shell; during this process, the connecting block 842 slides between the connecting plates 841. When the movable arc-shaped clamping plate 83 and the fixed arc-shaped clamping plate 82 are completely closed, the connecting block 842 is aligned with the connection hole on the connecting plate 841. At this time, insert the positioning pin 843 into the connection hole to firmly connect the fixed arc-shaped clamping plate 82 and the movable arc-shaped clamping plate 83, thereby fixing the conical shell.

[0059] Subsequently, one end of the transmission shaft is passed through the cone housing and the through-shaft hole 3, and finally inserted into the lower positioning groove of the lower clamping block 52. Then, the first pneumatic telescopic rod 41 is started to extend, driving the mounting rod 42 to descend. As the mounting rod 42 descends, the limit rod 44 slides in the limit hole of the limit block 45 to ensure the stability of the mounting rod 42 during the descending process. When the mounting rod 42 descends to the appropriate position, the first pneumatic telescopic rod 41 is stopped. At the same time, the other end of the transmission shaft enters the upper positioning groove of the upper clamping block 43, realizing stable and accurate clamping of the transmission shaft. After that, welding can be carried out.

[0060] After the cone housing and the transmission shaft are welded, then the first pneumatic telescopic rod 41 is started to contract and return to its original position. At this time, the bottom cover is placed into the cone housing. Then, the positioning rod 91 in the bottom cover positioning assembly 9 is placed on the bottom of the cone housing. The magnet 92 at the bottom of the positioning rod 91 adsorbs the bottom cover. As the magnet 92 adsorbs the bottom cover, the bottom cover will be automatically adjusted to the height consistent with the thickness of the magnet 92, that is, reaching the set height of the bottom cover from the bottom of the cone housing. Then, welding is carried out.

[0061] After welding is completed, the positioning pin 843 in the connection hole of the fixing assembly 8 is pulled out again, and the movable arc-shaped clamping plate 83 is opened; at the same time, the second pneumatic telescopic rod 51 is started to extend, driving the transmission shaft to move upward, and further driving the welded cone to move upward, facilitating the removal of the cone. After the cone is removed, the second pneumatic telescopic rod 51 returns to its original position.

[0062] For those of ordinary skill in the art, according to the teachings of the present utility model, without departing from the principles and spirit of the present utility model, the changes, modifications, substitutions, and variations made to the embodiments still fall within the protection scope of the present utility model.

Claims

1. A cone welding auxiliary tooling for a harvester, comprising a workbench (1), characterized in that : There is a welding seat (2) arranged at a position near the center at the top of the workbench (1). A through-axis hole (3) is correspondingly arranged through the welding seat (2) and the workbench (1). The through-axis hole (3) is matched with the transmission shaft. Upper clamping components (4) and lower clamping components (5) for clamping the transmission shaft are symmetrically arranged on both sides of the workbench (1). The upper clamping component (4) is fixedly connected to the workbench (1) through a support frame (6), and the lower clamping component (5) is fixedly connected to the workbench (1) through a support leg frame (7). A fixing component (8) for clamping and fixing the conical shell is arranged above the welding seat (2) on the workbench (1).

2. The auxiliary tooling for cone welding of a harvester according to claim 1, characterized in that: The upper clamping component (4) includes a first pneumatic telescopic rod (41) fixedly installed at the top of the support frame (6). The telescopic end of the first pneumatic telescopic rod (41) penetrates through the top of the support frame (6) and extends to its lower side and is fixedly connected with an installation rod (42). An upper clamping block (43) is fixedly installed at a position near the center at the bottom of the installation rod (42). An upper positioning groove is arranged on one side of the upper clamping block (43) away from the installation rod (42), and the upper positioning groove is matched with one end of the transmission shaft.

3. The auxiliary tooling for cone welding of a harvester according to claim 2, characterized in that: Limit rods (44) are symmetrically and fixedly connected to the bottom of the installation rod (42) near both ends. Two limit blocks (45) are symmetrically arranged on the inner walls on both sides of the support frame (6). Limit holes are penetrated through the tops of the limit blocks (45), and each positioning rod (91) slides through the corresponding limit hole.

4. The auxiliary tooling for cone welding of a harvester according to claim 3, wherein: The lower clamping component (5) includes a second pneumatic telescopic rod (51) fixedly installed on the support leg frame (7). The telescopic end of the second pneumatic telescopic rod (51) is fixedly installed with a lower clamping block (52). A lower positioning groove is arranged on one side of the lower clamping block (52) away from the second pneumatic telescopic rod (51), and the lower positioning groove is matched with the other end of the transmission shaft.

5. The auxiliary tooling for cone welding of a harvester according to claim 4, wherein: The fixing component (8) includes a U-shaped frame (81) fixedly installed on the support frame (6). A fixed arc-shaped clamping plate (82) is fixedly arranged above the U-shaped frame (81). One end of the fixed arc-shaped clamping plate (82) is hinged with a movable arc-shaped clamping plate (83), and the end of the movable arc-shaped clamping plate (83) away from the hinge is detachably connected to the fixed arc-shaped clamping plate (82) through a connecting piece (84).

6. The auxiliary tooling for harvesting machine cone welding according to claim 5, characterized in that: The connecting piece (84) includes connecting plates (841) symmetrically arranged on the upper and lower sides of the end of the fixed arc-shaped clamping plate (82). A connecting block (842) is slidably arranged between the two connecting plates (841). One end of the connecting block (842) is fixedly connected to the movable arc-shaped clamping plate (83). Connecting holes are correspondingly arranged through the two connecting plates (841) and the connecting block (842), and a positioning pin (843) is movably inserted into the connecting holes.

7. A cone welding auxiliary tooling for a harvester according to claim 6, characterized in that: The welding seat (2) includes a bottom plate (21) fixedly installed at the top of the workbench (1). A support plate (22) is arranged directly above the bottom plate (21). The bottom plate (21) and the support plate (22) are connected together by at least four bolts evenly arranged.

8. The auxiliary tooling for cone welding of a harvester according to claim 7, wherein: The diameter of the support plate (22) is 1 cm - 2 cm smaller than the minimum diameter of the conical shell, and the diameter of the bottom plate (21) is larger than the minimum diameter of the conical shell.

9. A cone welding auxiliary tooling for a harvester according to claim 1, characterized in that: The tooling further includes two bottom cover positioning components (9) with the same structure. The bottom cover positioning component (9) includes a positioning rod (91), and the length of the positioning rod (91) is greater than the maximum diameter of the conical housing.

10. The auxiliary tooling for cone welding of a harvester according to claim 9, characterized in that: At least two magnet stones (92) are evenly arranged at the bottom of the positioning rod (91). The maximum distance between the two magnet stones (92) is less than the maximum diameter of the conical housing. The thickness of the magnet stone (92) is consistent with the set height of the bottom cover from the bottom of the conical housing.

Images