Forklift frame welding device

Abstract

This utility model relates to a forklift welding device, and more particularly to a forklift frame welding device, comprising: a welding robot; a moving device, wherein the welding robot is mounted on a moving seat of the moving device; a lifting device, located on one side of the moving device; a tilting device, located on a lifting seat of the lifting device; a rotating device, located on the tilting device; a first fixing device, located at one end of the rotating device; and a second fixing device, located at the other end of the rotating device; the first fixing device and the second fixing device are used to fix the frame to the rotating device. This forklift frame welding device moves the welding robot via the moving device, increasing the working range of the welding robot; it allows the frame to rotate at any angle through the lifting device, tilting device, and rotating device, facilitating welding; and it fixes the frame to the rotating device from both ends through the two fixing devices, making frame fixing convenient and quick, with a simple overall structure, thus improving welding efficiency.

Description

Technical Field

[0001] This utility model relates to a forklift welding device, and more particularly to a forklift frame welding device. Background Technology

[0002] Forklift frames are relatively large. To achieve automated welding, the frames are usually assembled by spot welding, and then automated welding is performed by welding robots in conjunction with positioners. For example, CN110421298A discloses a welding equipment for forklift frames, which uses two welding robots in conjunction with a positioner and a fixing device to achieve automated welding. However, the fixing device has a complex structure and a long welding preparation time. Since the frame is placed horizontally, it exceeds the working range of the welding robot, requiring two welding robots, which leads to high equipment costs. Utility Model Content

[0003] To address the issues of complex structure and high equipment cost of the aforementioned fixing devices, this utility model provides a forklift frame welding device, the specific technical solution of which is as follows: A forklift frame welding device includes: a welding robot; a moving device, the welding robot being mounted on a moving seat of the moving device; a lifting device being mounted on one side of the moving device; a tilting device being mounted on a lifting seat of the lifting device; a rotating device being mounted on the tilting device; a first fixing device being mounted on one end of the rotating device; and a second fixing device being mounted on the other end of the rotating device; wherein the first fixing device and the second fixing device are used to fix the frame to the rotating device.

[0004] Preferably, the lifting device includes: a lifting frame, on which the lifting seat is slidably disposed; a lifting motor, disposed on the top of the lifting frame; a lifting screw, rotatably disposed on the lifting frame and connected to the lifting motor; and a screw nut, disposed on the lifting screw and connected to the lifting seat.

[0005] Preferably, it further includes: a counterweight device, which is disposed on the lifting frame and connected to the lifting seat.

[0006] Furthermore, the counterweight device includes: a counterweight sprocket, rotatably disposed on both sides of the top of the lifting frame; a counterweight chain, sleeved on the counterweight sprocket; a first connecting component, disposed at one end of the counterweight chain and connected to the lifting seat; a second connecting component, disposed at the other end of the counterweight chain; and a counterweight block, movably disposed within the lifting frame and connected to the second connecting component.

[0007] Furthermore, the structure of the first connecting component is the same as that of the second connecting component. The first connecting component includes: a first connecting seat disposed on the lifting seat; a first connecting shaft disposed on the top of the first connecting seat; a first connecting rod with its center rotatably disposed on the first connecting shaft; a second connecting shaft rotatably disposed at both ends of the first connecting rod; a second connecting seat disposed on the second connecting shaft; and a third connecting shaft disposed on the second connecting seat and connected to the counterweight chain.

[0008] Preferably, the first fixing device includes: a first positioning plate disposed on the rotating device for insertion into a first opening in the bottom plate of the frame; and a first positioning seat disposed on the first positioning plate and located above the bottom plate for pressing the bottom plate onto the rotating device.

[0009] Preferably, the second fixing device includes: a second positioning plate disposed on the rotating device for abutting against one end of the bottom plate of the frame; and a second pressure plate disposed on the rotating device, with one end abutting against the bottom plate for pressing the bottom plate against the rotating device.

[0010] Preferably, the tilting device includes: a first slewing bearing disposed on the lifting seat; a first drive assembly disposed on the lifting seat and connected to the first slewing bearing for driving the first slewing bearing to rotate; and a tilting frame disposed on the first slewing bearing and connected to the rotating device.

[0011] Furthermore, the rotating device includes: a second slewing bearing disposed on the tilting frame; a second drive assembly disposed on the tilting frame and connected to the second slewing bearing; and a rotating base disposed on the second slewing bearing and connected to the first fixing device and the second fixing device.

[0012] Preferably, the moving device includes: a moving base; a first linear guide rail disposed on the moving base; a first slider slidably disposed on the first linear guide rail; a Z-shaped connecting block connected to the first slider and the moving base respectively; a first protective baffle disposed on the moving base and located above the first linear guide rail, and the Z-shaped connecting block located below the first protective baffle; a moving rack disposed on the moving base; a moving gear meshing with the moving rack; and a moving motor disposed on the moving base and connected to the moving gear.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a forklift frame welding device that uses a moving device to drive a welding robot, thereby increasing the working coverage of the welding robot. The device enables the frame to rotate at any angle through a lifting device, a flipping device, and a rotating device, facilitating welding. The frame is fixed to the rotating device from both ends by two fixing devices, making the frame fixing convenient and quick. The overall structure is simple, improving welding efficiency. Attached Figure Description

[0014] Figure 1 This is a stereoscopic view from the first perspective of this application; Figure 2 This is a stereoscopic view from the second perspective of this application; Figure 3 This is a structural diagram of the mobile device; Figure 4 It is a cross-sectional view of the mobile device; Figure 5 It is a perspective view of the assembly of the lifting device, the tilting device, the rotating device, the first fixing device, and the second fixing device from the first point of view. Figure 6 yes Figure 5 A second perspective stereoscopic view; Figure 7 This is a schematic diagram of the structure of the first connecting component; Figure 8 It is a perspective view of the assembly of the flipping frame, rotating device, first fixing device and second fixing device from the first point of view; Figure 9 yes Figure 8 A second perspective 3D view, which hides the rotating base; Figure 10 This is a schematic diagram of the first fixing device; Figure 11 This is a structural diagram of the vehicle frame. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] like Figure 1 As shown, A forklift frame welding device includes a welding robot 1, a moving device 2, a tilting device 4, a rotating device 6, a first fixing device, and a second fixing device. The welding robot 1 is mounted on a moving seat 21 of the moving device 2. A lifting device 3 is located on one side of the moving device 2 and connected to the tilting device 4, used to drive the tilting device 4 to lift and lower. The tilting device 4 is connected to the rotating device 6, driving the rotating device 6 to rotate along a horizontal axis. Both the first and second fixing devices are mounted on the rotating device 6, used to fix the frame 9 onto the rotating device 6. The rotating device 6 drives the frame 9 to rotate along a vertical axis. The lifting device 3, tilting device 4, and rotating device 6 work together to achieve arbitrary angle rotation of the frame 9. Combined with the welding robot 1, this achieves one-time fixing of the frame 9 and completes all welding, greatly improving welding efficiency. Furthermore, only one robot is used in conjunction with the moving device 2 to achieve full coverage of the frame 9, reducing the number of robots required, lowering equipment investment costs, and simplifying control.

[0017] The mobile device 2 includes a mobile base 22, a mobile seat 21, a first linear guide rail 23, a first slider 29, a Z-shaped connecting block 24, a first protective baffle 26, a mobile rack 25, a mobile gear, and a mobile motor 27. The first linear guide rail 23 is symmetrically installed on both sides of the top of the mobile base 22 and is slidably connected to the first slider 29. Multiple first sliders 29 are provided, and each slider is connected to the Z-shaped connecting block 24. The mobile seat 21 is inverted U-shaped, and the Z-shaped connecting block 24 is fixed to both sides inside the mobile seat 21. The first protective baffle 26 is L-shaped and is fixed to the mobile base 22 via a first connecting bracket 28, located above the first linear guide rail 23. The Z-shaped connecting block 24 is located below the first protective baffle 26. The first protective baffle 26 protects the first linear guide rail 23 and prevents welding slag from entering it. The movable rack 25 is fixed on the movable base 22 and meshes with the movable gear. The movable gear is fixed on the movable motor 27, and the movable motor 27 is fixed on the movable base 21.

[0018] The lifting device 3 includes a lifting frame 31, a lifting seat 34, a lifting motor 30, a lifting screw 32, and a screw nut 33. The lifting frame 31 is connected to the lifting seat 34 through a linear guide pair. The lifting seat 34 moves up and down in the vertical direction. The lifting motor 30 is fixed to the top of the lifting frame 31 and is connected to the lifting screw 32. The two ends of the lifting screw 32 are fixed to the lifting frame 31 through bearing seats. The screw nut 33 is installed on the lifting screw 32 and is connected to the lifting seat 34 to drive the lifting seat 34 to move up and down.

[0019] Due to the significant weight of the frame 9, a counterweight device is included to improve safety and reduce the power consumption of the lifting motor 30. This counterweight device is mounted on the lifting frame 31 and connected to the lifting seat 34. Specifically, the counterweight device includes counterweight sprockets 38, counterweight chains, a first connecting assembly 37, and a second connecting assembly 36. The counterweight sprockets 38 are rotatably mounted on the top of the lifting frame 31, located on both sides of the top of the lifting frame 31. There are four counterweight sprockets 38, arranged in pairs. There are two counterweight chains, symmetrically located on both sides of the lifting screw 32. The counterweight chains are sleeved on the counterweight sprockets 38, with both ends connected to the first connecting assembly 37 and the second connecting assembly 36, respectively. The first connecting assembly 37 is also connected to the lifting seat 34. The second connecting assembly 36 is connected to the counterweight block 35, which is movably located inside the lifting frame 31. The weight of the counterweight block 35 is close to the weight of the frame 9 after mounting, thereby reducing the requirements on the lifting screw 32 and the lifting motor 30, reducing costs, and effectively improving safety. The structure of the first connecting assembly 37 is the same as that of the second connecting assembly 36. The first connecting assembly 37 includes a first connecting seat 371, a first connecting shaft 372, a first connecting rod 373, a second connecting shaft 374, a second connecting seat 375, and a third connecting shaft 376. The first connecting seat 371 is installed on the top of the lifting platform 34 and is located on the center line of the lifting platform 34. The first connecting seat 371 is connected to the first connecting shaft 372, and the first connecting shaft 372 is rotatably connected to the center of the first connecting rod 373. The second connecting shaft 374 is rotatably installed on both ends of the first connecting rod 373 and is symmetrically arranged. The second connecting seat 375 is connected to the second connecting shaft 374 and the third connecting shaft 376, and the third connecting shaft 376 is connected to one end of the counterweight chain. The first connecting assembly 37 and the second connecting assembly 36 can eliminate the assembly error of the two counterweight chains, so that the counterweight block 35 remains in a vertical state, can be lifted and lowered stably, and avoids interference or collision with the lifting frame 31.

[0020] The tilting device 4 includes a first slewing bearing 47, a first drive assembly 48, and a tilting frame 40. Both the first slewing bearing 47 and the first drive assembly 48 are mounted on the lifting base 34. The first slewing bearing 47 is also connected to the tilting frame 40. The tilting frame 40 includes a tilting base 41 and a tilting bracket 42. The tilting bracket 42 is vertically positioned at one end of the tilting base 41 in an L-shape. The tilting base 41 is fixed to the first slewing bearing 47, and the tilting bracket 42 is connected to the rotating device 6. The first drive assembly 48 includes a first motor and a first gear. The first motor is fixed to the lifting base 34 and connected to the first gear. The first gear meshes with the gear ring of the first slewing bearing 47, driving the tilting frame 40 to rotate around a horizontal axis, thus achieving horizontal rotation of the vehicle frame 9.

[0021] The rotating device 6 includes a second slewing bearing 62, a second drive assembly 63, and a rotating base 61. Both the second slewing bearing 62 and the second drive assembly 63 are mounted on a tilting bracket 42. The second slewing bearing 62 is also connected to the rotating base 61. The second drive assembly 63 includes a second motor and a second gear. The second motor is fixed to the tilting bracket 42 and connected to the second gear. The second gear meshes with the gear ring of the second slewing bearing 62 to drive the rotating base 61 to rotate. The rotating base 61 is connected to a first fixing device and a second fixing device.

[0022] To facilitate wiring of the second motor and protect the wires, a protective sleeve 46 is also installed on the tilting base 41, and the protective sleeve 46 also passes through the lifting seat 34.

[0023] The rotating base 61 is also equipped with a carbon brush 64, which is located inside the second slewing bearing 62 and moves against the rotating base 61 to improve conductivity, prevent the frame 9 from not conducting with the welding machine, and improve the reliability and stability of welding.

[0024] The first fixing device includes a first positioning plate 51 and a first positioning seat 52. The first positioning plate 51 is installed at one end of the rotating base 61, and the first positioning seat 52 is fixed to the first positioning plate 51 by screws. A first opening 92 is provided on the base plate 91 of the frame 9. The first opening 92 is located at one end of the frame 9 and is elliptical in shape. The shape of the first positioning plate 51 matches that of the first opening 92, and it is inserted into the first opening 92 to position the frame 9. Reinforcing pressure plates 522 are symmetrically provided on both sides of the first positioning seat 52. The reinforcing pressure plates 522 press the base plate 91 tightly onto the rotating base 61, thus fixing one end of the frame 9.

[0025] The second fixing device includes a second positioning plate 53 and a second pressure plate 54. The second positioning plate 53 is vertically fixed to the other end of the rotating base 61 and has a slot 531. The second pressure plate 54 is fixed to the rotating base 61 by screws, and its end is located in the slot 531. The end of the second pressure plate 54 is also located above the base plate 91, used to press the base plate 91 tightly onto the rotating base 61. The other end of the frame 9 has a through hole 93, which is also located above the base plate 91. The second positioning plate 53 is inserted into the through hole and abuts against the end of the base plate 91 to achieve positioning of the base plate 91. The second positioning plate 53 and the first positioning plate 51 achieve positioning of the base plate 91 of the frame 9, and the first positioning seat 52 and the second pressure plate 54 press the base plate 91 tightly onto the rotating base 61.

[0026] The first and second fixing devices have simple structures and are easy to assemble and disassemble, enabling rapid fixing of the frame 9 and reducing welding preparation time.

[0027] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A forklift frame welding device, characterized in that, include: Welding robot (1); Mobile device (2), wherein the welding robot (1) is mounted on the mobile base (21) of the mobile device (2); A lifting device (3) is located on one side of the moving device (2); A flipping device (4) is provided on the lifting seat (34) of the lifting device (3); A rotating device (6) is provided on the flipping device (4); A first fixing device is disposed at one end of the rotating device (6); and The second fixing device is located at the other end of the rotating device (6); The first fixing device and the second fixing device are used to fix the frame (9) on the rotating device (6).

2. The fork truck frame welding apparatus of claim 1 wherein, The lifting device (3) includes: The lifting frame (31) has the lifting seat (34) slidably mounted on the lifting frame (31); A lifting motor (30) is located at the top of the lifting frame (31); The lifting screw (32) is rotatably mounted on the lifting frame (31) and connected to the lifting motor (30); and A lead screw nut (33) is provided on the lifting lead screw (32) and connected to the lifting seat (34).

3. A fork truck frame welding apparatus as defined in claim 2 wherein, Also includes: A counterweight device is provided on the lifting frame (31) and connected to the lifting seat (34).

4. The fork truck frame welding apparatus of claim 3 wherein, The counterweight device includes: Counterweight sprockets (38) are rotatably located on both sides of the top of the lifting frame (31); A counterweight chain is fitted onto the counterweight sprocket (38); The first connecting component (37) is located at one end of the counterweight chain and is connected to the lifting seat (34); A second connecting component (36) is disposed at the other end of the counterweight chain; and The counterweight (35) is movably disposed within the lifting frame (31) and connected to the second connecting component (36).

5. A forklift truck frame welding apparatus according to claim 4, wherein The structure of the first connecting component (37) is the same as that of the second connecting component (36), and the first connecting component (37) includes: The first connecting seat (371) is provided on the lifting seat (34); The first connecting shaft (372) is located on the top of the first connecting seat (371); The center of the first connecting rod (373) is rotatably mounted on the first connecting shaft (372); The second connecting shaft (374) is rotatably disposed at both ends of the first connecting rod (373); The second connecting seat (375) is disposed on the second connecting shaft (374); and The third connecting shaft (376) is located on the second connecting seat (375) and is connected to the counterweight chain.

6. The fork truck frame welding apparatus of claim 1 wherein, The first fixing device includes: A first positioning plate (51) is disposed on the rotating device (6) and is used to insert into the first opening (92) of the bottom plate (91) of the frame (9); and The first positioning seat (52) is disposed on the first positioning plate (51) and located above the base plate (91), and is used to press the base plate (91) onto the rotating device (6).

7. The fork truck frame welding apparatus of claim 1 wherein, The second fixing device includes: A second positioning plate (53) is disposed on the rotating device (6) and is used to abut against one end of the bottom plate (91) of the frame (9); and The second pressure plate (54) is disposed on the rotating device (6) and one end abuts against the base plate (91) for pressing the base plate (91) against the rotating device (6).

8. A forklift truck frame welding apparatus according to any one of claims 1 to 7, wherein The flipping device (4) includes: The first slewing bearing (47) is mounted on the lifting seat (34); A first drive assembly (48) is disposed on the lifting seat (34) and connected to the first slewing bearing (47) for driving the first slewing bearing (47) to rotate; and The tilting frame (40) is mounted on the first slewing bearing (47) and connected to the rotating device (6).

9. A forklift frame welding device according to claim 8, characterized in that, The rotating device (6) includes: The second slewing bearing (62) is mounted on the tilting frame (40); The second drive assembly (63) is mounted on the tilting frame (40) and connected to the second slewing bearing (62); and The rotating base (61) is mounted on the second slewing bearing (62) and is connected to the first fixing device and the second fixing device.

10. A forklift truck frame welding apparatus according to any one of claims 1 to 7, wherein The mobile device (2) includes: Mobile base (22); The first linear guide rail (23) is mounted on the movable base (22); The first slider (29) is slidably disposed on the first linear guide rail (23); Z-shaped connecting block (24) is connected to the first slider (29) and the movable seat (21) respectively; The first protective baffle (26) is disposed on the movable base (22) and located above the first linear guide rail (23), and the Z-shaped connecting block (24) is located below the first protective baffle (26); A movable rack (25) is mounted on the movable base (22); The movable gear meshes with the movable rack (25); and A movable motor (27) is mounted on the movable base (21) and connected to the movable gear.

Images