Maize harvester extension frame assembly table

Abstract

The utility model relates to the technical field of agricultural machinery production, in particular to an extension frame assembly table of a corn harvester, which not only can automatically fix and weld an extension frame and a carriage, but also can ensure the stability of the extension frame and the carriage in the welding process, and is better in welding assembly effect, convenient to use, low in labor intensity and high in practicability. Comprising a baseplate; the laser welding device comprises a bottom plate and further comprises a laser welding gun, a pressing mechanism, a rotating mechanism, a clamping mechanism and a moving mechanism, the laser welding gun is installed on the bottom plate through the moving mechanism, the moving mechanism is used for moving the laser welding gun, the clamping mechanism is installed on the bottom plate through the rotating mechanism, the rotating mechanism is used for rotating the clamping mechanism, and the clamping mechanism has the clamping and fixing functions. And the pressing mechanism has a pressing and fixing function.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery production, in particular to an assembly platform for an expansion rack of a corn harvester. Background Art

[0002] The corn harvester expansion rack is a bracket used to expand the volume of the harvester compartment, so that the corn harvester can hold more corn. Figure 6 During the production of a corn harvester, when the extension rack needs to be assembled to the carriage of the corn harvester, the extension rack is first placed on the upper end of the carriage, and then the staff holds a welding gun to fix and weld the connection parts of the extension rack and the carriage so that they can be assembled together; the inventor believes that there are the following problems in the assembly process, first, it requires manual welding during welding, which is labor-intensive, and when the extension rack is fixed to the carriage, no fixing device for the extension rack is provided, and the extension rack is prone to shaking during welding, resulting in reduced welding effect, so there is a need for an assembly table that can not only automatically weld but also fix the extension rack and the carriage. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a corn harvester extension frame assembly platform which can not only automatically fix and weld the extension frame and the carriage, but also ensure the stability of the extension frame and the carriage during the welding process, with better welding and assembly effects, easy use, low labor intensity and high practicality.

[0004] The assembly platform of the corn harvester extension frame of the present invention comprises a base plate; a laser welding gun, a pressing mechanism, a rotating mechanism, a clamping mechanism and a moving mechanism. The laser welding gun is mounted on the base plate through the moving mechanism. The moving mechanism is used to move the laser welding gun. The clamping mechanism is mounted on the base plate through the rotating mechanism. The rotating mechanism is used to rotate the clamping mechanism. The clamping mechanism has a clamping and fixing function, and the pressing mechanism has a pressing and fixing function. When the extension frame is fixed to the carriage on the corn harvester, the carriage is first placed on the clamping mechanism for clamping and fixing. Then the extension frame is placed on the upper end of the carriage so that The expansion rack is aligned with the carriage, and then the expansion rack is pressed and fixed on the carriage by a clamping mechanism, so that the expansion rack and the carriage are fixed, and then the laser welding gun is moved along the joint between the carriage and the expansion rack by a moving mechanism, so that the laser welding gun fixes and welds the connection between the carriage and the expansion rack; then the carriage with the expansion rack welded can be installed on the corn harvester; it can not only automatically fix and weld the expansion rack and the carriage, but also ensure the stability of the expansion rack and the carriage during the welding process through the clamping mechanism and the clamping mechanism, so that the welding and assembly effect is better, it is easy to use, has low labor intensity and high practicality.

[0005] Preferably, the rotating mechanism includes an electric turntable and a rotating shaft, the electric turntable is fixedly mounted on the base plate, the rotating shaft is mounted on the rotating end of the upper part of the electric turntable, and the clamping mechanism is mounted on the upper end of the rotating shaft; when the expansion rack and the carriage are fixedly welded, the electric turntable is opened, and the electric turntable drives the clamping mechanism to rotate the expansion rack and the carriage through the rotating shaft, so that the ends of the expansion rack and the carriage that need to be welded are rotated in turn to the side close to the laser welding gun for welding; this facilitates welding with the laser welding gun.

[0006] Preferably, the clamping mechanism includes a support plate, a torque motor, a lead screw and two sets of clamping plates, the support plate is fixedly mounted on the upper end of the rotating shaft, the torque motor is fixedly mounted on the right end of the support plate, the lead screw is rotatably mounted on the support plate, the left and right parts of the lead screw are respectively provided with external threads with opposite rotation directions, the input end of the lead screw is connected to the torque motor, the two sets of clamping plates are respectively screwed with the left and right parts of the lead screw, and the two sets of clamping plates are both slidably mounted on the support plate left and right; when the expansion frame and the car body are fixed and welded, the car body is first placed on the upper end of the support plate, and then the torque motor is turned on. The torque motor drives the lead screw to rotate, and the rotating lead screw brings the two sets of clamping plates close to each other until the two sets of clamping plates are respectively in contact with the left and right ends of the car body, so that the two sets of clamping plates clamp the car body to the upper end of the support plate; the stability of the car body during the welding process is improved.

[0007] Preferably, the clamping mechanism includes a lifting frame, a hydraulic cylinder, a push rod, a thrust bearing and a pressure plate. The hydraulic cylinder is fixedly installed on the lifting frame, and the push rod is installed on the lifting frame for sliding up and down. The upper end of the push rod is connected to the output end of the hydraulic cylinder, and the thrust bearing is rotatably installed at the lower part of the push rod. The push rod is coaxial with the rotating shaft, and the pressure plate is fixedly installed at the lower end of the thrust bearing, and the pressure plate is located above the support plate; when the car body and the extension frame are fixedly welded, after the extension frame is placed on the upper end of the car body, the hydraulic cylinder is turned on, and the hydraulic cylinder causes the thrust bearing to drive the pressure plate to descend through the push rod until the pressure plate contacts the extension frame, so that the pressure plate presses the extension frame and fixes it on the car body, thereby improving the stability of the car body and the extension frame during the welding process.

[0008] Preferably, the moving mechanism includes a lifting mechanism, an electric slide rail A, a sliding plate A, an electric slide rail B and a sliding plate B, the electric slide rail A is mounted on the bottom plate, the sliding plate A is mounted on the electric slide rail A, the electric slide rail A is used to move the sliding plate A left and right, the electric slide rail B is mounted on the sliding plate A through the lifting mechanism, the sliding plate B is mounted on the electric slide rail B, the electric slide rail B is used to move the sliding plate B forward and backward, and the laser welding gun is fixedly mounted on the sliding plate B; when the car box and the expansion rack are fixedly welded, the sliding plate A is first driven by the electric slide rail A to lift the car box. The lowering mechanism and the electric slide B move to the right, and the electric slide B moves the laser welding gun to the right through the sliding plate B until the distance between the laser welding gun, the car body and the expansion rack is suitable for welding. Then the laser welding gun is turned on to weld the joints of the car body and the expansion rack. At the same time, the electric slide B is turned on, and the electric slide B moves the laser welding gun back and forth through the sliding plate B. During the process of moving back and forth, the laser welding gun can evenly weld the welds at the joints of the car body and the expansion rack, which facilitates the welding of the car body and the expansion rack.

[0009] Preferably, the lifting mechanism includes a cylinder, a fixed column, a sliding column and a push rod, the cylinder and the fixed column are fixedly mounted on the upper end of the sliding plate A, the lower end of the push rod is connected to the output end of the cylinder, the sliding column is mounted on the fixed column for sliding up and down, and the electric slide rail B is fixedly mounted on the upper ends of the sliding column and the push rod; when the car body and the extension frame are welded by the laser welding gun, the cylinder is opened, and the cylinder causes the electric slide rail B to drive the sliding plate B and the laser welding gun to rise through the push rod, until the laser welding gun rises to align with the docking position of the car body and the extension frame, and then the laser welding gun is turned on to weld the docking position of the car body and the extension frame; since the height of the laser welding gun can be adjusted, it can weld car bodies of any height, is easy to use, and has few limitations.

[0010] Preferably, the upper end of the support plate is provided with a high-temperature resistant coating; through the above arrangement, the high-temperature resistance of the support plate is improved and the service life of the support plate is increased.

[0011] Compared with the prior art, the beneficial effects of the present invention are: not only can the expansion frame and the carriage be fixedly welded automatically, but also the stability of the expansion frame and the carriage during the welding process can be ensured, the welding and assembly effect is better, the use is convenient, the labor intensity is low, and the practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a first axonometric structural diagram of the present invention;

[0013] Figure 2 This is a second axonometric structural diagram of the present invention;

[0014] Figure 3It is a schematic diagram of the structure of the moving mechanism and the laser welding gun;

[0015] Figure 4 It is a structural diagram of the clamping mechanism and the rotating mechanism;

[0016] Figure 5 It is a structural diagram of the pressing mechanism;

[0017] Figure 6 This is the assembly drawing of the carriage and expansion rack;

[0018] Figure 7 It is a main structural diagram of the present utility model.

[0019] Markings in the accompanying drawings: 1. Carriage; 2. Extension frame; 3. Base plate; 4. Laser welding gun; 5. Electric turntable; 6. Rotating shaft; 7. Support plate; 8. Torque motor; 9. Screw; 10. Clamp; 11. Lifting frame; 12. Hydraulic cylinder; 13. Push rod; 14. Thrust bearing; 15. Pressure plate; 16. Electric slide rail A; 17. Sliding plate A; 18. Electric slide rail B; 19. Sliding plate B; 20. Cylinder; 21. Fixed column; 22. Sliding column; 23. Push rod. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example

[0021] like Figures 1 to 7The corn harvester assembly platform of the present invention includes a base plate 3, a laser welding gun 4, a pressing mechanism, a rotating mechanism, a clamping mechanism and a moving mechanism. The laser welding gun 4 is installed on the base plate 3 through the moving mechanism. The moving mechanism is used to move the laser welding gun 4. The clamping mechanism is installed on the base plate 3 through the rotating mechanism. The rotating mechanism is used to rotate the clamping mechanism. The clamping mechanism has the function of clamping and fixing, and the pressing mechanism has the function of pressing and fixing. When fixing the expansion rack 2 to the carriage 1 on the corn harvester, first place the carriage 1 on the clamping mechanism for clamping and fixing, and then place the expansion rack 2 on the upper end of the carriage 1 so that the expansion rack 2 is fixed to the carriage 1, and then the expansion frame 2 is pressed and fixed on the car body 1 by the clamping mechanism, so that the expansion frame 2 and the car body 1 are fixed, and then the laser welding gun 4 is moved along the docking point between the car body 1 and the expansion frame 2 by the moving mechanism, so that the laser welding gun 4 fixes and welds the connection between the car body 1 and the expansion frame 2; then the car body 1 welded with the expansion frame 2 can be installed on the corn harvester; it can not only automatically fix and weld the expansion frame 2 and the car body 1, but also ensure the stability of the expansion frame 2 and the car body 1 during the welding process through the clamping mechanism and the clamping mechanism, so the welding and assembly effect is better, it is easy to use, has low labor intensity and high practicality.

[0022] like Figure 2 The rotating mechanism includes an electric turntable 5 and a rotating shaft 6. The electric turntable 5 is fixedly mounted on the base plate 3, the rotating shaft 6 is mounted on the rotating end of the upper part of the electric turntable 5, and the clamping mechanism is mounted on the upper end of the rotating shaft 6; when the expansion rack 2 and the carriage 1 are fixedly welded, the electric turntable 5 is opened, and the electric turntable 5 drives the clamping mechanism to rotate the expansion rack 2 and the carriage 1 through the rotating shaft 6, so that the end of the expansion rack 2 and the carriage 1 that needs to be welded is rotated in turn to the side close to the laser welding gun 4 for welding; this facilitates welding with the laser welding gun 4.

[0023] like Figure 4 The clamping mechanism includes a support plate 7, a torque motor 8, a screw 9 and two sets of clamping plates 10. The support plate 7 is fixedly mounted on the upper end of the rotating shaft 6, the torque motor 8 is fixedly mounted on the right end of the support plate 7, and the screw 9 is rotatably mounted on the support plate 7. The left and right parts of the screw 9 are respectively provided with external threads with opposite rotation directions. The input end of the screw 9 is connected to the torque motor 8, and the two sets of clamping plates 10 are respectively screwed with the left and right parts of the screw 9. The two sets of clamping plates 10 are both slidably mounted on the support plate 7 left and right; when the expansion frame 2 and the car box 1 are fixed and welded, the car box 1 is first placed on the upper end of the support plate 7, and then the torque motor 8 is turned on. The torque motor 8 drives the screw 9 to rotate. The rotating screw 9 makes the two sets of clamping plates 10 approach each other until the two sets of clamping plates 10 contact the left and right ends of the car box 1 respectively, so that the two sets of clamping plates 10 clamp the car box 1 to the upper end of the support plate 7; the stability of the car box 1 during the welding process is improved.

[0024] like Figure 1 and Figure 5 The pressing mechanism includes a hoisting frame 11, a hydraulic cylinder 12, a push rod 13, a thrust bearing 14 and a pressure plate 15. The hydraulic cylinder 12 is fixedly mounted on the hoisting frame 11, and the push rod 13 is slidably mounted on the hoisting frame 11. The upper end of the push rod 13 is connected to the output end of the hydraulic cylinder 12, and the thrust bearing 14 is rotatably mounted on the lower part of the push rod 13. The push rod 13 is coaxial with the rotating shaft 6, and the pressure plate 15 is fixedly mounted on the lower end of the thrust bearing 14, and the pressure plate 15 is located above the support plate 7; the hoisting frame 11 is fixedly hoisted in the workshop. When the car body 1 and the extension frame 2 are fixedly welded, after the extension frame 2 is placed on the upper end of the car body 1, the hydraulic cylinder 12 is opened, and the hydraulic cylinder 12 causes the thrust bearing 14 to drive the pressure plate 15 to descend through the push rod 13 until the pressure plate 15 contacts the extension frame 2, so that the pressure plate 15 presses and fixes the extension frame 2 on the car body 1, thereby improving the stability of the car body 1 and the extension frame 2 during the welding process.

[0025] like Figure 3 The moving mechanism includes a lifting mechanism, an electric slide rail A16, a sliding plate A17, an electric slide rail B18 and a sliding plate B19. The electric slide rail A16 is installed on the base plate 3, the sliding plate A17 is installed on the electric slide rail A16, and the electric slide rail A16 is used to move the sliding plate A17 left and right. The electric slide rail B18 is installed on the sliding plate A17 through the lifting mechanism, and the sliding plate B19 is installed on the electric slide rail B18. The electric slide rail B18 is used to move the sliding plate B19 back and forth. The laser welding gun 4 is fixedly installed on the sliding plate B19. When the car box 1 and the expansion rack 2 are fixedly welded, the sliding plate A17 is first moved by the electric slide rail A16. 17 drives the lifting mechanism and the electric slide rail B18 to move to the right, and the electric slide rail B18 moves the laser welding gun 4 to the right through the sliding plate B19 until the distance between the laser welding gun 4 and the car body 1 and the expansion rack 2 is suitable for welding. Then the laser welding gun 4 is turned on to weld the docking parts of the car body 1 and the expansion rack 2. At the same time, the electric slide rail B18 is turned on and the electric slide rail B18 moves the laser welding gun 4 back and forth through the sliding plate B19. During the process of moving back and forth, the laser welding gun 4 can evenly weld the welds at the docking parts of the car body 1 and the expansion rack 2; this facilitates the welding of the car body 1 and the expansion rack 2.

[0026] The lifting mechanism includes a cylinder 20, a fixed column 21, a sliding column 22 and a push rod 23. The cylinder 20 and the fixed column 21 are fixedly mounted on the upper end of the sliding plate A17. The lower end of the push rod 23 is connected to the output end of the cylinder 20. The sliding column 22 is mounted on the fixed column 21 for sliding up and down. The electric slide rail B18 is fixedly mounted on the upper ends of the sliding column 22 and the push rod 23. When the car body 1 and the expansion rack 2 are welded by the laser welding gun 4, the cylinder 20 is opened, and the cylinder 20 causes the electric slide rail B18 to drive the sliding plate B19 and the laser welding gun 4 to rise through the push rod 23 until the laser welding gun 4 rises to align with the docking position of the car body 1 and the expansion rack 2. Then, the laser welding gun 4 is opened and the laser welding gun 4 is used to weld the docking position of the car body 1 and the expansion rack 2. Since the height of the laser welding gun 4 can be adjusted, it can weld car bodies 1 of any height. It is easy to use and has low limitations. Example

[0027] On the basis of Example 1, a high-temperature resistant coating is provided on the upper end of the support plate 7; through the above arrangement, the high-temperature resistance of the support plate 7 is improved, and the service life of the support plate 7 is increased.

[0028] The laser welding gun 4, electric turntable 5, torque motor 8, hydraulic cylinder 12, electric slide rail A16, electric slide rail B18 and oil cylinder 20 of the corn harvester extension rack assembly platform of the utility model are all purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manual, and there is no need for technical personnel in this field to make creative labor.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A corn harvester expansion rack assembly platform, comprising a bottom plate (3); characterized in that: The invention also includes a laser welding gun (4), a pressing mechanism, a rotating mechanism, a clamping mechanism and a moving mechanism. The laser welding gun (4) is mounted on the base plate (3) via the moving mechanism. The moving mechanism is used to move the laser welding gun (4). The clamping mechanism is mounted on the base plate (3) via the rotating mechanism. The rotating mechanism is used to rotate the clamping mechanism. The clamping mechanism has a clamping and fixing function. The pressing mechanism has a pressing and fixing function.

2. The corn harvester expansion rack assembly platform according to claim 1, characterized in that: The rotating mechanism comprises an electric turntable (5) and a rotating shaft (6), the electric turntable (5) is fixedly mounted on the base plate (3), the rotating shaft (6) is mounted on the rotating end of the upper part of the electric turntable (5), and the clamping mechanism is mounted on the upper end of the rotating shaft (6).

3. The corn harvester expansion rack assembly platform according to claim 2, characterized in that: The clamping mechanism comprises a support plate (7), a torque motor (8), a lead screw (9) and two groups of clamping plates (10), wherein the support plate (7) is fixedly mounted on the upper end of the rotating shaft (6), the torque motor (8) is fixedly mounted on the right end of the support plate (7), the lead screw (9) is rotatably mounted on the support plate (7), the left and right parts of the lead screw (9) are respectively provided with external threads with opposite rotation directions, the input end of the lead screw (9) is connected to the torque motor (8), the two groups of clamping plates (10) are respectively screwed to the left and right parts of the lead screw (9), and the two groups of clamping plates (10) are both slidably mounted on the support plate (7).

4. The corn harvester expansion rack assembly platform according to claim 3, characterized in that: The clamping mechanism comprises a hanging frame (11), a hydraulic cylinder (12), a push rod (13), a thrust bearing (14) and a pressing plate (15), wherein the hydraulic cylinder (12) is fixedly mounted on the hanging frame (11), the push rod (13) is slidably mounted on the hanging frame (11), the upper end of the push rod (13) is connected to the output end of the hydraulic cylinder (12), the thrust bearing (14) is rotatably mounted on the lower part of the push rod (13), the push rod (13) is coaxial with the rotating shaft (6), the pressing plate (15) is fixedly mounted on the lower end of the thrust bearing (14), and the pressing plate (15) is located above the support plate (7).

5. The corn harvester expansion rack assembly platform according to claim 1, characterized in that: The moving mechanism includes a lifting mechanism, an electric slide rail A (16), a sliding plate A (17), an electric slide rail B (18) and a sliding plate B (19), wherein the electric slide rail A (16) is mounted on the base plate (3), the sliding plate A (17) is mounted on the electric slide rail A (16), the electric slide rail A (16) is used to move the sliding plate A (17) left and right, the electric slide rail B (18) is mounted on the sliding plate A (17) through the lifting mechanism, the sliding plate B (19) is mounted on the electric slide rail B (18), the electric slide rail B (18) is used to move the sliding plate B (19) forward and backward, and the laser welding gun (4) is fixedly mounted on the sliding plate B (19).

6. The corn harvester expansion rack assembly platform according to claim 5, characterized in that: The lifting mechanism includes an oil cylinder (20), a fixed column (21), a sliding column (22) and a push rod (23). The oil cylinder (20) and the fixed column (21) are fixedly mounted on the upper end of the sliding plate A (17). The lower end of the push rod (23) is connected to the output end of the oil cylinder (20). The sliding column (22) is mounted on the fixed column (21) so as to slide up and down. The electric slide rail B (18) is fixedly mounted on the upper ends of the sliding column (22) and the push rod (23).

7. The corn harvester expansion rack assembly platform according to claim 3, characterized in that: The upper end of the support plate (7) is provided with a high-temperature resistant coating.

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