Positioning, assembling and welding device for front section of bucket rod

Abstract

A bucket rod front section positioning, assembling and welding device comprises an operation table, a plurality of supporting seats, two mounting frames and two air swelling shafts are arranged on the upper end face of the operation table in a fixed structure mode, the two air swelling shafts are used for fixing shaft sleeves respectively, and a preset number of lever air cylinders are fixedly arranged on the upper end face of the operation table along the periphery of the bucket rod front section. The lever cylinder pressing arm is used for pressing the front end of the bucket rod on the supporting seat and is provided with a pressing mechanism; the rotary pressing cylinder is vertically connected with the mounting frames in a fixed structure mode, a positioning column is arranged on the lower end face of an output arm of the rotary pressing cylinder in a fixed structure mode, the positioning column is of an inverted circular truncated cone structure and can press and position the shaft sleeve, and a telescopic cylinder is horizontally arranged on the side wall of one mounting frame in a fixed structure mode; the mechanical structure is simplified, the working efficiency is improved, and the manufacturing cost is reduced.

Description

Technical Field:

[0001] The present application relates to the technical field of tooling, and particularly to a positioning and group welding device for the front section of a bucket arm. Background Art:

[0002] The bucket arm is an important component of an excavator and is used for the operation of the bucket in excavation work. The bucket arm is usually connected by the front section of the bucket arm, the connecting arm, and the rear section of the bucket arm. The front section of the bucket arm is used to connect the bucket cylinder and the bucket, and the rear section of the bucket arm is connected to the boom and the boom cylinder. As Figure 7 shown, the structures of the front section and the rear section of the bucket arm are similar, both including two bushings, two side plates, and a connecting plate. However, the front end of the bucket arm is connected with reinforcing plates on the side plates around the two bushings.

[0003] A positioning and group welding tooling for the rear section of a bucket arm with an application number of 2024205810697 in our company includes a positioner with a flipping arm. Support seats, rotary pressing cylinders, bushing support columns, and mounting seat A are fixedly arranged on the upper and lower end faces of the flipping arm in a mirror structure. A number of support seats are arranged in the middle of the flipping arm to support the lower side plates; a pressing block in the shape of an inverted frustum is fixedly arranged on the lower end face of the cantilever of the rotary pressing cylinder. The bushing support columns are arranged on the end face of the flipping arm in a fixed structure and cooperate with the pressing block to position the bushings; a number of mounting seat A are arranged outside the support seats. A guide rod cylinder is fixedly arranged on one side of the mounting seat A to position the connecting plate, and the guide rod cylinders on both sides of the flipping arm are arranged in a mirror image; welding clamping cylinders are fixedly arranged on one side of two of the mounting seat A, and the welding clamping cylinders on both sides of the flipping arm 1 are arranged in a mirror image. A pressing device is fixedly arranged on the movable arm of the welding clamping cylinder 8 to position the upper side wall. By mirror - arranging structural components such as support seats, rotary pressing cylinders, bushing support columns, guide rod cylinders, welding clamping cylinders, and pressing devices on both sides of the flipping arm of the positioner, two working stations are formed to perform the assembly of the rear section of the bucket arm.

[0004] Based on the above patent application, a bushing spacing adjustment structure for the bucket arm assembly tooling with an application number of 2024205810678 is arranged on the flipping arm to avoid interfering with the picking and placing of products after the assembly of the rear section of the bucket arm; however, this spacing adjustment structure is relatively complex and requires the cooperation of multiple cylinders and linear guides, resulting in low efficiency. Utility Model Content:

[0005] To solve the above - mentioned technical problems, the present utility model provides a positioning and group welding device for the front section of a bucket arm, and the technical problem to be solved is: complex structure and low efficiency. To solve the above - mentioned technical problems, the technical solution adopted by the present utility model is:

[0006] A positioning and group welding device for the front section of a bucket arm includes:

[0007] Operating table, a support base is provided on the upper end surface of the operating table in a fixed structure manner;

[0008] Air shaft, two air shafts are connected to the operating table in a fixed structure manner;

[0009] Lever cylinder, a preset number of lever cylinders are provided on the upper end surface of the operating table in a fixed structure manner, and the lever cylinders are distributed along the periphery of the front section of the bucket rod;

[0010] Pressing mechanism, the pressing mechanism is connected to the pressing arm of the lever cylinder;

[0011] Mounting frame, two mounting frames are connected to the operating table in a fixed structure manner;

[0012] Rotating and pressing cylinder, the rotating and pressing cylinder is connected to the mounting frame in a fixed structure manner along the vertical direction;

[0013] Positioning column arranged in an inverted frustum structure, the positioning column is provided on the lower end surface of the output arm of the rotating and pressing cylinder in a fixed structure manner;

[0014] Telescopic cylinder, the telescopic cylinder is provided on the side wall of one mounting frame in a fixed structure manner along the horizontal direction;

[0015] Support leg, the support leg is provided on the upper end surface of the operating table in a fixed structure manner;

[0016] Guide rod cylinder, the guide rod cylinder is connected to the support leg in a fixed structure manner.

[0017] Further, the rotating and pressing cylinder includes a rotating cylinder and a fixed arm, and the output shaft of the rotating cylinder is connected to the middle of the fixed arm in a fixed structure manner;

[0018] The positioning column is arranged on one side of the fixed arm, and a clamping block is provided on the other side of the fixed arm away from the positioning column in a fixed structure manner;

[0019] A U-shaped card slot for plugging and matching with the clamping block is provided on the upper end surface of the mounting frame in a fixed structure manner.

[0020] Further, a vertical plate is provided on the upper end surface of the operating table in a fixed structure manner, and guide cylinders are provided on both sides of the vertical plate in a fixed structure manner. The output end of the guide cylinder extends horizontally outwards, and a clamping plate is provided at the output end of the guide cylinder in a fixed structure manner. A limiting block and a pressing block are provided on the upper part of the clamping plate in a fixed structure manner.

[0021] Further, a pick plate is provided on one side of the support base close to the air shaft in a fixed structure manner. A positioning plate is provided on the upper end surface of the pick plate, an embedded groove is provided on the upper end surface of the positioning plate, a pressing mechanism is connected to the lower end surface of the positioning plate, and the pressing mechanism is connected to the pick plate.

[0022] Further, the pressing mechanism includes a pin shaft and a spring sleeved outside the pin shaft;

[0023] One end of the pin shaft passes through and is connected to the picking plate or the pressing arm of the lever cylinder in a sliding structure manner.

[0024] The beneficial effects of the present utility model are as follows: A rotary pressing cylinder and telescopic cylinders on both sides are arranged on the mounting frame to replace the structure for adjusting the distance between the bushings of the bucket rod assembly tooling shaft. Through the layout of the guide rod cylinder, rotary pressing cylinder, telescopic cylinder, and lever cylinder, the front section of the bucket rod is positioned and fixed, simplifying the mechanical structure, improving work efficiency, and reducing manufacturing costs.

[0025] By setting the insertion fit of the clamping block and the U-shaped card slot, when the positioning post positions the side plate, the torsional force received by the rotary cylinder is reduced, the service life is increased, and the positioning accuracy is improved.

[0026] By setting the embedded groove to position the reinforcement plate and using the pressing mechanism to press the reinforcement plate against the end face of the side plate, the assembly efficiency is improved.

[0027] By setting the pressing block and the limiting block, one end of the connecting plate is limited and positioned to ensure the positioning accuracy of the connecting plate and the side plate. Description of the drawings:

[0028] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0029] Figure 2 It is a schematic diagram of the layout structure of the support seat, air shaft, and operating table of the present utility model.

[0030] Figure 3 It is a schematic diagram of the vertical plate and two guide cylinders of the present utility model.

[0031] Figure 4 It is a schematic diagram of the mounting frame, rotary pressing cylinder, and telescopic cylinder of the present utility model.

[0032] Figure 5 It is a schematic diagram of the support seat, pressing mechanism, and positioning plate of the present utility model.

[0033] Figure 6 It is a schematic diagram of the structure of the embodiment of the present utility model.

[0034] Figure 7 It is a schematic diagram of the front section structure of the bucket rod of the present utility model.

[0035] In the figure:

[0036] 1. Operating table, 2. Support base, 3. Air shaft, 4. Lever cylinder, 5. Mounting frame, 6. Rotary pressing cylinder, 61. Rotary cylinder, 62. Fixed arm, 7. Positioning column, 8. Telescopic cylinder, 9. Leg, 10. Guide rod cylinder, 11. Block, 12. U-shaped slot, 13. Vertical plate, 14. Guide cylinder, 15. Clamping plate, 16. Limit block, 17. Pressing block, 18. Embedded groove, 19. Picking plate, 20. Pin shaft, 21. Spring, 22. Positioning plate. Specific implementation method:

[0037] To make the purpose, technical solution and advantages of the implementation of the present utility model clearer, the present utility model will now be further described in detail with reference to the accompanying drawings and the following embodiments, so that the public can better master the implementation method of the present utility model. The specific implementation scheme of the present utility model is as follows:

[0038] A positioning and group welding device for the front section of a bucket rod includes an operating table 1. On the upper end surface of the operating table 1, a number of support bases 2, two mounting frames 5 and two air shafts 3 are arranged in a fixed structure manner. The two air shafts 3 are respectively used to fix the shaft sleeves. Along the periphery of the front section of the bucket rod on the upper end surface of the operating table 1, a preset number of lever cylinders 4 are fixedly arranged to press the front end of the bucket rod against the support base 2. The pressing arm of the lever cylinder 4 is provided with a pressing mechanism. The rotary pressing cylinder 6 is connected to the mounting frame 5 in a fixed structure manner along the vertical direction. On the lower end surface of the output arm of the rotary pressing cylinder 6, a positioning column 7 is arranged in a fixed structure manner. The positioning column 7 is arranged in an inverted frustum structure and can press and position the shaft sleeve. On the side wall of one of the mounting frames 5, a telescopic cylinder 8 is arranged in a fixed structure manner along the horizontal direction. On the upper end surface of the operating table 1, a leg 9 is arranged in a fixed structure manner. The leg 9 is connected to a guide rod cylinder 10 in a fixed structure manner. A magnet is fixedly arranged at the output end of the guide rod cylinder 10 and cooperates with the telescopic cylinder 8 to position the connecting plate. By arranging a rotary pressing cylinder and telescopic cylinders on both sides on the mounting frame to replace the shaft sleeve spacing adjustment structure of the bucket rod assembly jig, through the layout of the guide rod cylinder, rotary pressing cylinder, telescopic cylinder and lever cylinder, the front section of the bucket rod is positioned and fixed, simplifying the mechanical structure, improving work efficiency and reducing manufacturing costs.

[0039] Specifically, the rotary pressing cylinder 6 includes a rotary cylinder 61 and a fixed arm 62. The output shaft of the rotary cylinder 61 is connected to the middle of the fixed arm 62 in a fixed structure manner. The positioning column 7 is arranged on one side of the fixed arm 62. On the other side of the fixed arm 62 away from the positioning column 7, a block 11 is arranged in a fixed structure manner. On the upper end surface of the mounting frame 5, a U-shaped slot 12 that is inserted and matched with the block 11 is arranged in a fixed structure manner. By arranging the insertion and matching of the block and the U-shaped slot, when the positioning column positions the side plate, the torsional force received by the rotary cylinder is reduced, the service life is improved, and the positioning accuracy is improved.

[0040] It should be noted that a vertical plate 13 is provided on the upper end surface of the operating table 1 in a fixed structure manner. Guide cylinders 14 are provided on both sides of the vertical plate 13 in a fixed structure manner. The output ends of the guide cylinders 14 extend horizontally outwards, and a clamping plate 15 is provided at the output ends of the guide cylinders 14 in a fixed structure manner. A limit block 16 and a pressing block 17 are provided on the upper part of the clamping plate 15 in a fixed structure manner to limit and position one end of the connecting plate, ensuring the positioning accuracy of the connecting plate and the side plate.

[0041] It should be elaborated that a pick-up plate 19 is provided on one side of the support base 2 close to the air-expansion shaft 3 in a fixed structure. A positioning plate 22 is provided on the upper end surface of the pick-up plate 19. An embedding groove 18 is provided on the upper end surface of the positioning plate 22. A pressing mechanism is connected to the lower end surface of the positioning plate 22, and the pressing mechanism is connected to the pick-up plate 19. The reinforcement plate is positioned by setting the embedding groove, and the reinforcement plate is pressed against the end surface of the side plate by using the pressing mechanism, improving the assembly efficiency.

[0042] Specifically, the pressing mechanisms both include a pin shaft 20 and a spring 21 sleeved outside the pin shaft 20; one end of the pin shaft 20 passes through and is connected to the pick-up plate 19 or the pressing arm of the lever cylinder 4 in a sliding structure manner, enabling the workpiece to be closely attached and improving the welding quality.

[0043] The working principle and process of the present utility model are as follows:

[0044] Firstly, use a manipulator to place the reinforcement plate in the embedding groove 18, place the lower side plate on the support base, then place the two bushings at the corresponding air-expansion shafts 3 respectively, and then place the connecting plate on the upper end surface of the lower side plate. Start the guide rod cylinder 10, the telescopic cylinder 8, and the guide cylinder 14, and use the clamping plate 15, the limit block 16, and the pressing block 17, as well as the telescopic cylinder 8 and the guide rod cylinder 10 to limit the connecting plate;

[0045] Finally, place the upper side plate on the upper part of the connecting plate, start the rotary pressing cylinder 6, insert the positioning column 7 into the bushing, and insert the clamping block 11 on the other side into the U-shaped card slot 12 to press the bushing against the air-expansion shaft 3. Start the air-expansion shaft 3 to fix the bushing; meanwhile, start the lever cylinder 4, and the pressing arm of the lever cylinder 4 rotates and presses down. When the pin shaft 20 contacts the side plate, the spring 21 is compressed, and the pin shaft 20 slides relative to the pressing arm, thereby applying a pressing force to complete the positioning and fixing work of the front section of the rod, and use a welding robot for welding.

[0046] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protection scope of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Although the present utility model is described according to a limited number of embodiments, those skilled in the art in this technical field should understand that other embodiments can be envisioned within the scope of the present utility model thus described, benefiting from the above description.

Claims

1. A bucket arm front section positioning welding device, characterized in that: include: An operating table (1), wherein a support seat (2) is arranged on the upper end surface of the operating table (1) in a fixed structure manner; Pneumatic shafts (3), both of which are connected to the operating table (1) in a fixed structure manner; Lever cylinders (4), a preset number of lever cylinders (4) are arranged on the upper end surface of the operating table (1) in a fixed structure manner, and the lever cylinders (4) are distributed along the periphery of the front section of the boom; A clamping mechanism connected to a clamping arm of a lever cylinder (4); Mounting frames (5), two mounting frames (5) are connected to the operating table (1) in a fixed structure manner; A rotating downward pressing cylinder (6), wherein the rotating downward pressing cylinder (6) is vertically connected to the mounting frame (5) in a fixed structural manner; A positioning column (7) is arranged in an inverted truncated cone structure, and the positioning column (7) is arranged on the lower end surface of the output arm of the rotary downward pressure cylinder (6) in a fixed structure manner; A telescopic cylinder (8), the telescopic cylinder (8) being arranged horizontally on a side wall of a mounting frame (5) in a fixed structure manner; A supporting leg (9), the supporting leg (9) being arranged on the upper end surface of the operating table (1) in a fixed structure manner; A guide rod cylinder (10) is connected to the support leg (9) in a fixed structure.

2. The arm front section positioning welding device according to claim 1, characterized in that: The rotary downward pressure cylinder (6) comprises a rotary cylinder (61) and a fixed arm (62), wherein the output shaft of the rotary cylinder (61) is connected to the middle part of the fixed arm (62) in a fixed structure manner; The positioning column (7) is arranged on one side of the fixed arm (62), and a clamping block (11) is arranged in a fixed structure manner on the other side of the fixed arm (62) away from the positioning column (7); The upper end surface of the mounting frame (5) is provided with a U-shaped card slot (12) in a fixed structure manner and is plug-matched with the card block (11).

3. The arm front section positioning welding device according to claim 1, characterized in that: The upper end surface of the operating table (1) is provided with a vertical plate (13) in a fixed structural manner, and guide cylinders (14) are provided on both sides of the vertical plate (13) in a fixed structural manner. The output end of the guide cylinder (14) extends outward in a horizontal direction, and a clamping plate (15) is provided at the output end of the guide cylinder (14) in a fixed structural manner. A limit block (16) and a pressing block (17) are provided on the upper part of the clamping plate (15) in a fixed structural manner.

4. The arm front section positioning welding device according to claim 1, characterized in that: A lifting plate (19) is provided with a fixed structure on one side of the support seat (2) close to the air expansion shaft (3); a positioning plate (22) is provided on the upper end surface of the lifting plate (19); an embedding groove (18) is provided on the upper end surface of the positioning plate (22); a clamping mechanism is connected to the lower end surface of the positioning plate (22); and the clamping mechanism is connected to the lifting plate (19).

5. A bucket arm front section positioning welding device according to claim 1 or 4, characterized in that: The clamping mechanism and the pressing mechanism both include a pin shaft (20) and a spring (21) sleeved outside the pin shaft (20); One end of the pin shaft (20) passes through the lifting plate (19) or the lever cylinder (4) pressure arm, and is connected with the lifting plate (19) or the lever cylinder (4) pressure arm in a sliding structure.

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