A welding processing equipment for an engineering vehicle cab framework

Abstract

This invention discloses a welding and processing equipment for the frame of an engineering vehicle cab, relating to the field of excavator cab production technology. It includes a welding table with multiple placement frames fixedly connected to it. Sliding frames are slidably connected to the placement frames. A lifting platform is fixedly mounted on the top surface of the welding table. A correction mechanism located on one side of the placement frames is provided on the top surface of the welding table. The correction mechanism includes a mounting frame and two vertical actuators with vertical travel. It also includes a frame body, which is composed of a base frame, B-pillars, A-pillars, and a top frame. The lifting platform drives the base frame to rise. This invention achieves rapid frame body production by first welding the base frame, then lifting the base frame and welding the top frame, followed by connecting the B-pillars, and finally welding the A-pillars. This avoids the need for multiple measurements and positioning of the B-pillars during welding, thus achieving rapid frame body welding production.

Description

Technical Field

[0001] This invention relates to the field of excavator cab manufacturing technology, specifically to a welding and processing equipment for the cab frame of an engineering vehicle. Background Technology

[0002] Engineering vehicles are vehicles and equipment used in fields such as engineering construction, mining, road construction, and agricultural operations. The most common one is the excavator. The various parts of the excavator are manufactured separately and then assembled. When manufacturing the cab of an excavator, the internal frame must first be welded out, and then the outer shell, doors, and other parts are welded and installed.

[0003] Currently, when welding the cab frame, the base frame (consisting of two crossbeams and two longitudinal beams) is welded first. Then, the uprights (including the curved A-pillar and the vertical B-pillar) are fixed to the top surface of the base frame using clamps (requiring measurement and correction using a straightedge or similar equipment) before welding. After the uprights are welded, the crossbeams and longitudinal beams of the top frame are fixed to the top of the uprights and welded. Because the vertical height of the uprights is typically around 1.7 to 2 meters to ensure sufficient space for the driver to enter the cab, the uprights are prone to tilting and swaying due to their length when fixed to the base frame. This necessitates measurement, correction, and clamping of the uprights in multiple directions, affecting clamping efficiency and consequently impacting welding production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a welding and processing equipment for the cab frame of an engineering vehicle, so as to overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding processing equipment for the cab frame of an engineering vehicle, including a welding table, a plurality of placement frames fixedly connected to the welding table, a sliding frame slidably connected to the placement frame, and a plurality of pipe clamps fixedly connected to the top surface of the placement frame and the sliding frame.

[0006] The welding table has a lifting platform fixed on its top surface, a lifting frame fixed on the lifting platform, and a correction mechanism located on one side of the placement frame on the top surface of the welding table. The correction mechanism includes a mounting frame and two vertical actuators with vertical movement strokes.

[0007] It also includes a frame, which is composed of a base frame, B-pillars, A-pillars and a top frame connected together. The base frame is composed of two long longitudinal beams and two transverse beams. The top frame is composed of two short longitudinal beams and two transverse beams.

[0008] The crossbeam, long longitudinal beam, and short longitudinal beam are all held by two pipe clamps when fixed, and the lifting platform drives the base frame to rise.

[0009] Preferably, the vertical device includes a fixed frame slidably connected within the mounting bracket, a fixed sleeve with one end facing the placement bracket is fixedly connected inside the fixed frame, a rotating bracket is rotatably mounted inside the fixed sleeve, a pneumatic clamp is fixedly connected inside the rotating bracket, and the front end of the pneumatic clamp is provided with two clamps to hold the B-pillar.

[0010] Preferably, the vertical device further includes a Y-shaped connecting pipe and a hydraulic cylinder. The Y-shaped connecting pipe and the hydraulic cylinder are both fixedly connected within a fixed frame. The two upper openings of the Y-shaped connecting pipe are parallel to each other and are slidably connected to piston rods. Symmetrical protrusions are fixedly connected to the outer side of the rotating frame, and the protrusions abut against the piston rods in the extended state. A pressing rod is fixedly connected to the telescopic end of the hydraulic cylinder. The pressing rod is slidably connected within the bottom opening of the Y-shaped connecting pipe. The Y-shaped connecting pipe is filled with hydraulic oil.

[0011] Preferably, a baffle is fixedly connected to the side of the placement frame near the calibration mechanism, and a baffle is fixedly connected to the side of the sliding frame.

[0012] Preferably, the first baffle and the second baffle are located on the same side of the welding table, and the first baffle and the second baffle respectively abut against one end of the corresponding crossbeam.

[0013] Preferably, the lifting frame includes a fixed frame and multiple hinged frames. The fixed frame is fixedly connected to the top surface of the lifting platform, and the hinged frames are connected to one side of the fixed frame via hinges, allowing the hinged frames to rotate only upwards.

[0014] Preferably, the connecting hinge between the fixed frame and the hinge frame is a torsion spring hinge, which drives the hinge frame to rotate downward to reset when the hinge frame rotates upward.

[0015] Preferably, the top surface of the hinge frame is fixedly connected with multiple limiting blocks, and the crossbeam or long longitudinal beam is engaged between the multiple limiting blocks on the corresponding hinge frame.

[0016] Preferably, the pipe clamp is a compressed air driven gripper, and after the pipe clamp is driven, the two clamping blocks above it move relative to each other to clamp the crossbeam, long longitudinal beam or short longitudinal beam placed in the pipe clamp.

[0017] Preferably, the A-pillar has an arc segment, and the length of the long longitudinal beam is greater than that of the short longitudinal beam.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. In this invention, the frame is produced quickly by first welding the base frame, then lifting the base frame and welding the top frame, then connecting the B-pillar, and finally welding the A-pillar. This avoids the need to measure and position the B-pillar multiple times during the welding process, thus achieving rapid welding production of the frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the welding table of the present invention when the base frame is placed;

[0025] Figure 6 This is a schematic diagram of the structure of the welding station with the top frame in place according to the present invention;

[0026] Figure 7 This is a schematic diagram of the lifting frame structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the correction mechanism structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the mounting frame structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the cab frame structure manufactured according to the present invention.

[0030] In the diagram: 1. Welding table; 11. Placement rack; 12. Sliding rack; 13. Pipe clamp; 14. Baffle 1; 15. Baffle 2; 2. Lifting platform; 3. Lifting rack; 31. Fixed rack; 32. Hinge rack; 33. Torsion spring hinge; 34. Limiting block; 4. Correction mechanism; 41. Mounting rack; 42. Vertical device; 421. Fixed frame; 422. Fixed sleeve; 423. Rotating rack; 424. Pneumatic clamp; 425. Clamp; 426. Y-shaped connecting pipe; 427. Piston rod; 428. Hydraulic cylinder; 429. Extrusion rod; 5. Frame; 51. Crossbeam; 52. Long longitudinal beam; 53. B-pillar; 54. Short longitudinal beam; 55. A-pillar. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figures 1 to 10As shown, the present invention provides a welding processing equipment for the cab frame of an engineering vehicle, including a welding table 1, a plurality of placement racks 11 fixedly connected to the welding table 1, a sliding rack 12 slidably connected to the placement rack 11, and a plurality of pipe clamps 13 fixedly connected to the top surface of the placement rack 11 and the sliding rack 12.

[0033] A lifting platform 2 is fixedly installed on the top surface of the welding table 1, and a lifting frame 3 is fixedly installed on the lifting platform 2. A correction mechanism 4 located on one side of the placement frame 11 is provided on the top surface of the welding table 1. The correction mechanism 4 includes a mounting frame 41 and two vertical devices 42 with vertical movement stroke.

[0034] It also includes frame 5, which is composed of a base frame, B-pillar 53, A-pillar 55 and top frame. The base frame is composed of two long longitudinal beams 52 and two horizontal beams 51, and the top frame is composed of two short longitudinal beams 54 and two horizontal beams 51.

[0035] When fixed, the crossbeam 51, the long longitudinal beam 52, and the short longitudinal beam 54 are all held by two pipe clamps 13, and the lifting platform 2 drives the base frame to rise.

[0036] In this invention, the frame 5 is produced quickly by first welding the base frame, then lifting the base frame and welding the top frame, then connecting the B-pillar 53, and finally welding the A-pillar 55. This avoids the need to measure and position the B-pillar 53 multiple times during the welding process, thus achieving rapid welding production of the frame 5.

[0037] The verticalizer 42 includes a fixed frame 421 slidably connected within the mounting bracket 41. A fixed sleeve 422, with one end facing the placement bracket 11, is fixedly connected inside the fixed frame 421. A rotating bracket 423 is rotatably mounted inside the fixed sleeve 422. A pneumatic clamp 424 is fixedly connected inside the rotating bracket 423. The front end of the pneumatic clamp 424 has two clamps 425 to hold the B-pillar 53. The verticalizer 42 also includes a Y-shaped connecting pipe 426 and a hydraulic cylinder 428. Hydraulic cylinders 428 are all fixedly connected within the fixed frame 421. The two upper openings of the Y-shaped connecting pipe 426 are parallel to each other and are slidably connected to piston rods 427. Symmetrical protrusions are fixedly connected to the outer side of the rotating frame 423, and the protrusions abut against the piston rods 427 in the extended state. A pressing rod 429 is fixedly connected to the telescopic end of the hydraulic cylinder 428. The pressing rod 429 is slidably connected within the bottom opening of the Y-shaped connecting pipe 426. The Y-shaped connecting pipe 426 is filled with hydraulic oil.

[0038] like Figure 8 and Figure 9As shown, when the B-pillar 53 is clamped by the chuck 425, in the initial stage, the B-pillar 53 and the pneumatic clamp 424 will shake. As the extrusion rod 429 extrudes the hydraulic oil in the Y-shaped connecting pipe 426, driving the two piston rods 427 to extend upward, the piston rods 427 contact the protrusion on the outside of the rotating frame 423. The rotating frame 423 is limited by the two piston rods 427 and drives the two chucks 425 to a horizontal state, thereby ensuring that the B-pillar 53 is in a vertical state. This achieves the goal of quickly making the B-pillar 53 vertical. After that, by moving the fixed frame 421 vertically, the bottom end of the B-pillar 53 contacts the lower crossbeam 51. Then, by lowering the lifting platform 2, the top end of the B-pillar 53 contacts the upper crossbeam 51, ensuring the verticality between the B-pillar 53 and the upper base frame and the lower top frame, thus ensuring the pass rate of the frame 5 production.

[0039] Among them, a baffle 14 is fixedly connected to the side of the placement frame 11 near the correction mechanism 4, and a baffle 2 15 is fixedly connected to the side of the sliding frame 12. The baffle 14 and the baffle 2 15 are located on the same side of the welding table 1, and the baffle 14 and the baffle 2 15 respectively abut against one end of the corresponding crossbeam 51.

[0040] like Figure 3 and Figure 4 As shown, when placing the two crossbeams 51, the positioning accuracy of the crossbeams 51 is ensured by the limiting of baffle 14 and baffle 2 15. Then, the positioning accuracy of the two long longitudinal beams 52 or short longitudinal beams 54 is ensured by the limiting of the two crossbeams 51, thereby ensuring the accuracy of the dimensions of the frame 5 after welding.

[0041] The lifting frame 3 includes a fixed frame 31 and multiple hinge frames 32. The fixed frame 31 is fixedly connected to the top surface of the lifting platform 2. The hinge frames 32 are connected to one side of the fixed frame 31 by hinges, and the hinge frames 32 can only rotate upward. The connecting hinge between the fixed frame 31 and the hinge frames 32 is a torsion spring hinge 33. When the hinge frames 32 rotate upward, the torsion spring hinge 33 drives them to rotate downward to reset.

[0042] like Figure 7 As shown, the hinge frame 32 is connected to the fixed frame 31 via the torsion spring hinge 33. When the lifting frame 3 carries the base frame, the hinge frame 32 remains attached to the top surface of the lifting platform 2 under the pressure of the base frame. After the frame 5 is welded, as the frame 5 is lifted by the hook, the bottom surface of the hinge frame 32 will rotate upward after contacting the bottom top frame to avoid the top frame, so that the frame 5 can be lifted and transferred. After that, the hinge frame 32 will automatically reset under the drive of the torsion spring hinge 33.

[0043] The top surface of the hinge frame 32 is fixedly connected with multiple limiting blocks 34, and the crossbeam 51 or the long longitudinal beam 52 is engaged between the multiple limiting blocks 34 on the corresponding hinge frame 32.

[0044] like Figure 1 , Figure 2 and Figure 7 As shown, after the base frame is welded, the lifting platform 2 is driven to rise, thereby lifting the base frame. At this time, under the limiting action of the limiting block 34, the base frame can only move upward, thereby avoiding horizontal displacement when it is welded to the B-pillar 53 in the future, and ensuring that the position between the B-pillar 53 and the base frame is accurate after welding.

[0045] Among them, the pipe clamp 13 is a clamp driven by compressed air. After the pipe clamp 13 is driven, the two clamping blocks above it move relative to each other to clamp the crossbeam 51, long longitudinal beam 52 or short longitudinal beam 54 placed in the pipe clamp 13.

[0046] like Figures 1 to 6 As shown, some of the pipe clamps 13 are located on the sliding frame 12. Therefore, when the pipe clamps 13 clamp the long longitudinal beam 52 or the short longitudinal beam 54, it can ensure that the two pipe clamps 13 are mirror-distributed in the length direction of the long longitudinal beam 52 or the short longitudinal beam 54, thereby ensuring the force balance of the long longitudinal beam 52 or the short longitudinal beam 54 during clamping.

[0047] Among them, column A 55 has an arc segment, and the length of the long longitudinal beam 52 is greater than that of the short longitudinal beam 54.

[0048] Working principle:

[0049] When using this equipment to weld the frame of the cab, the sliding frame 12 is initially in its initial state (i.e., not moving towards the lifting platform 2). At this time, the long longitudinal beam 52 and the cross beam 51 are placed inside the corresponding pipe clamp 13, and one end of the cross beam 51 abuts against the side of the adjacent baffle 14 or baffle 2 15 (at this time, the cross beam 51 and the long longitudinal beam 52 are not only located on the pipe clamp 13, but also inside the hinge frame 32). Then, the pipe clamp 13 is driven to work to clamp the cross beam 51 and the long longitudinal beam 52. At this time, the base frame is shaped. Then, the long longitudinal beam 52 and the cross beam 51 are welded by the welding machine to complete the welding of the base frame.

[0050] Then, the pipe clamp 13 is released, and the lifting platform 2 is driven to rise (the lifting height of the lifting platform 2 is higher than the height of the B-pillar 53). At this time, the lifting frame 3 will lift the already welded base frame as the lifting platform 2 rises. Then, the sliding frame 12 is driven to move towards the correction mechanism 4. After that, the short longitudinal beam 54 and the cross beam 51 are placed in the corresponding area, and the pipe clamp 13 is driven to clamp again, thereby completing the shaping of the top frame. Then, the short longitudinal beam 54 and the cross beam 51 are welded by the welding machine to complete the welding of the top frame.

[0051] Then, the pneumatic clamp 424 is used to clamp the B-pillar 53 in the chuck 425. The telescopic end of the hydraulic cylinder 428 is then extended, causing the compression rod 429 to squeeze the hydraulic oil in the Y-shaped connecting pipe 426. This drives the two piston rods 427 to extend upwards and abut against the protrusions on both sides of the rotating frame 423. This utilizes the principle of communicating vessels to ensure that the extension lengths of the two piston rods 427 are the same, ensuring that the pneumatic clamp 424 inside the rotating frame 423 keeps the B-pillar 53 in a vertical position after clamping it. When B-pillar 53 is in position, the bottom end of B-pillar 53 is positioned on the crossbeam 51 held by pipe clamp 13 (the bottom end of B-pillar 53 does not contact the crossbeam 51 below). Then, the fixing frame 421 is moved down, so that the bottom end of B-pillar 53 abuts against the crossbeam 51 below. Subsequently, the lifting platform 2 is lowered, so that the crossbeam 51 of the base frame on the lifting platform 2 abuts against the top end of B-pillar 53. At this point, the connection between the base frame, B-pillar 53 and the top frame is completed. During welding, the verticality between B-pillar 53 and the top frame and base frame can be effectively guaranteed.

[0052] After welding B-pillar 53 is completed, simply place A-pillar 55 into the corresponding position between the top frame and the base frame for welding to complete the welding of A-pillar 55. At this time, since the upper base frame is supported by the lifting platform 2 and the lifting frame 3, and the lower base frame is fixed by the pipe clamp 13 on the placement frame 11, it is only necessary to insert A-pillar 55 between the base frame and the top frame to complete the docking, thus making the docking and welding of A-pillar 55 more convenient.

[0053] After the A-pillar 55 is welded, the control clamp 13 is opened, and the clamp 425 of the pneumatic clamp 424 is opened (the clamp 425 is a rotary movement, and it will rotate to both sides when it is opened, so that the two clamps 425 are 180 degrees when they are opened). At this time, it is only necessary to use the hook to hook the frame 5 from above and control the lifting platform 2 to lower it, so that the welded frame 5 can be taken out. Since the frame 5 is in the state of base frame on top and top frame on bottom, the bottom of the frame 5 is smaller than the top. Therefore, when the frame 5 is lifted upward by the hook, when the hinge frame 32 comes into contact with the short longitudinal beam 54 and the cross beam 51, it will rotate upward to avoid contact.

[0054] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A welding and processing equipment for the cab frame of an engineering vehicle, comprising a welding table (1), characterized in that: Multiple placement racks (11) are fixedly connected to the welding table (1), and sliding racks (12) are slidably connected to the placement racks (11). Multiple pipe clamps (13) are fixedly connected to the top surfaces of the placement racks (11) and sliding racks (12). The top surface of the welding table (1) is fixedly provided with a lifting platform (2), and a lifting frame (3) is fixedly provided on the lifting platform (2). The top surface of the welding table (1) is provided with a correction mechanism (4) located on one side of the placement frame (11). The correction mechanism (4) includes a mounting frame (41) and two vertical devices (42) with up and down movement strokes. It also includes a frame (5), which is composed of a base frame, B-pillar (53), A-pillar (55) and a top frame. The base frame is composed of two long longitudinal beams (52) and two cross beams (51), and the top frame is composed of two short longitudinal beams (54) and two cross beams (51). The crossbeam (51), long longitudinal beam (52), and short longitudinal beam (54) are all clamped by two pipe clamps (13) when fixed, and the lifting platform (2) drives the base frame to rise. The vertical device (42) includes a fixed frame (421) slidably connected in the mounting bracket (41). A fixed sleeve (422) with one end facing the placement bracket (11) is fixedly connected inside the fixed frame (421). A rotating bracket (423) is rotatably installed inside the fixed sleeve (422). A pneumatic clamp (424) is fixedly connected inside the rotating bracket (423). The front end of the pneumatic clamp (424) is provided with two clamps (425) to clamp the B-pillar (53). The vertical device (42) also includes a Y-shaped connecting pipe (426) and a hydraulic cylinder (428). The Y-shaped connecting pipe (426) and the hydraulic cylinder (428) are both fixedly connected in the fixed frame (421). The two upper openings of the Y-shaped connecting pipe (426) are parallel to each other and are slidably connected to piston rods (427). The outer side of the rotating frame (423) is fixedly connected to symmetrical protrusions, and the protrusions abut against the piston rods (427) in the extended state. The telescopic end of the hydraulic cylinder (428) is fixedly connected to a pressing rod (429). The pressing rod (429) is slidably connected in the bottom opening of the Y-shaped connecting pipe (426). The Y-shaped connecting pipe (426) is filled with hydraulic oil.

2. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 1, characterized in that: The placement rack (11) is fixedly connected to a baffle (14) on the side near the calibration mechanism (4), and the sliding rack (12) is fixedly connected to a baffle (15) on the side.

3. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 2, characterized in that: The first baffle (14) and the second baffle (15) are located on the same side of the welding table (1), and the first baffle (14) and the second baffle (15) respectively abut against one end of the corresponding crossbeam (51).

4. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 1, characterized in that: The lifting frame (3) includes a fixed frame (31) and multiple hinge frames (32). The fixed frame (31) is fixedly connected to the top surface of the lifting platform (2). The hinge frames (32) are connected to one side of the fixed frame (31) by hinges and allow the hinge frames (32) to rotate only upwards.

5. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 4, characterized in that: The connecting hinge between the fixed frame (31) and the hinge frame (32) is a torsion spring hinge (33), which drives the hinge frame (32) to rotate downward to reset when the hinge frame (32) rotates upward.

6. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 4, characterized in that: The top surface of the hinge frame (32) is fixedly connected with multiple limiting blocks (34), and the crossbeam (51) or long longitudinal beam (52) is engaged between the multiple limiting blocks (34) on the corresponding hinge frame (32).

7. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 1, characterized in that: The pipe clamp (13) is a compressed air driven gripper. After the pipe clamp (13) is driven, the two clamping blocks above it move relative to each other to clamp the crossbeam (51), long longitudinal beam (52) or short longitudinal beam (54) placed in the pipe clamp (13).

8. The welding and processing equipment for the cab frame of an engineering vehicle according to claim 1, characterized in that: The A-column (55) has an arc segment, and the length of the long longitudinal beam (52) is greater than that of the short longitudinal beam (54).

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