Welding positioning device for forklift portal frame

Abstract

The utility model provides a welding positioning device of a forklift gantry, which relates to the technical field of forklift gantries and comprises a workbench, a bridge plate is arranged at the top of the workbench, a mounting frame is slidably connected between the inner walls of the two sides of the bridge plate, a telescopic support is fixed at the top of the mounting frame, one end of the telescopic support extends to one side of the bridge plate, and the other end of the telescopic support extends to the other side of the bridge plate. When the gantry plate with radian is fixed and restrained, the gantry plate is firstly placed on the conveying belt and conveyed to the bottom of the bridge plate, and then the first air cylinder is started to drive the movable plate and the mounting frame to slide downwards in the bridge plate, so that the limiting plate is clamped on the horizontal side of the gantry plate; when the mounting frame descends, the arc-shaped supporting plate abuts against the arc face of one side of the portal frame plate, then the second air cylinder is retracted, the arc-shaped clamping plate can be driven to clamp and fix the portal frame plate, and therefore the situation that fixing is unstable due to the fact that the arc-shaped clamping plate makes contact with the arc edge point of the arc-shaped clamping plate in the fixing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift door frames, in particular to a welding positioning device for a forklift door frame. Background Art

[0002] Generally, forklift masts have formed channel steels and do not require welded ribs. Non-standard forklift masts refer to masts without formed channel steels. They require welded ribs and are designed for special forklift cargoes. The appearance of this type of mast can be customized according to actual working conditions, and the styles are diversified.

[0003] Existing forklift masts are mostly made of channel steel welding. However, when welding a mast with a curvature and high precision, the existing positioning method mostly uses two clamps to clamp the edge of the mast. This results in point contact between the clamp and the curved surface of the mast, which affects the fixing effect of the mast and is prone to deviation during welding.

[0004] Therefore, a welding positioning device for a forklift mast is provided to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to solve the problems existing in the prior art and proposes a welding positioning device for a forklift door frame.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a welding positioning device for a forklift door frame, comprising a workbench, a bridge plate is arranged on the top of the workbench, a mounting frame is slidably connected between the inner walls on both sides of the bridge plate, a telescopic bracket is fixed on the top of the mounting frame, one end of the telescopic bracket extends to one side of the bridge plate, and an arc-shaped clamping plate is fixed on one end of the telescopic bracket;

[0009] An arc-shaped support plate is fixed to the bottom of the mounting frame near the other side, a double-output shaft cylinder is fixed to the top of the mounting frame, slide plates are slidably installed on the front and rear sides of the mounting frame, a second cylinder is fixed to the inner side of the telescopic bracket, and the output end of the second cylinder is fixed to the movable end of the telescopic bracket.

[0010] Preferably, one side of the two slides is fixed to the output end of the dual-output shaft cylinder, and telescopic rods are provided at the bottom of the two slides near the edges on both sides, and the second cylinder is fixed to the mounting frame.

[0011] Preferably, a limiting plate is fixed at the bottom of the two telescopic rods, a conveyor belt is arranged on the top of the workbench, and a plurality of guide grooves are opened on both sides of the bridge plate.

[0012] Preferably, the bottom of the arc-shaped support plate is flush with the bottom of the arc-shaped clamping plate, a movable plate is fixed to the top of the telescopic bracket, and both ends of the mounting bracket are correspondingly slidably engaged in the inside of the guide groove.

[0013] Preferably, the bottom of the movable plate is fixed to the top of the mounting frame near the edges on both sides, and guide rods are fixed to the top of the movable plate at the four corners.

[0014] Preferably, the plurality of guide rods are slid through the top of the bridge plate, a first cylinder is fixed on the top of the bridge plate, and an output end of the first cylinder is slid through the inside of the bridge plate and fixed on the top of the movable plate.

[0015] Preferably, shock-absorbing pads are fixed to the bottom of the workbench near the edges on both sides, and a door frame plate is provided on the top of the conveyor belt.

[0016] (III) Beneficial effects

[0017] 1. In the utility model, when fixing and restraining the portal plate with an arc, the portal plate is first placed on the conveyor belt and conveyed to the bottom of the bridge plate, and then the first cylinder is started to drive the movable plate and the mounting frame to slide downward inside the bridge plate, so that the limit plate is clamped on the horizontal side of the portal plate, and when the mounting frame descends, the arc support plate is supported on the arc surface of one side of the portal plate, and then the second cylinder is contracted, so that the arc clamping plate can be driven to clamp and fix the portal plate, thereby avoiding contact with the arc edge point of the arc clamping plate during fixation, resulting in unstable fixation.

[0018] 2. In the utility model, when the limit plate limits the horizontal side of the portal plate, the contraction of the dual-output shaft cylinder can drive the slide plate to slide relatively on the mounting frame, thereby driving the limit plate to clamp and fit the horizontal side of the portal plate. When the mounting frame slides inside the bridge plate, the side of the mounting frame is extended to the inside of the guide groove, thereby ensuring the stability of the mounting frame when sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model provides a side view of a three-dimensional structural diagram of a welding positioning device for a forklift door frame;

[0020] Figure 2 The utility model provides a side view of the three-dimensional structure of a bridge plate in a welding positioning device for a forklift door frame;

[0021] Figure 3The utility model provides a one-side cross-sectional three-dimensional structural schematic diagram of a bridge plate in a welding positioning device for a forklift door frame;

[0022] Figure 4 The utility model provides a schematic diagram of the cross-sectional three-dimensional structure of the other side of a bridge plate in a welding positioning device of a forklift door frame.

[0023] In the figure:

[0024] 1. Workbench; 2. Shock-absorbing pad; 3. Conveyor belt; 4. Bridge plate; 5. Guide rod; 6. First cylinder; 7. Guide groove; 8. Door frame plate; 9. Arc clamping plate; 10. Movable plate; 11. Mounting frame; 12. Limit plate; 13. Telescopic rod; 14. Telescopic bracket; 15. Second cylinder; 16. Arc support plate; 17. Double output shaft cylinder; 18. Slide plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-4 As shown, a welding positioning device for a forklift gantry comprises a workbench 1, a bridge plate 4 is arranged on the top of the workbench 1, a mounting frame 11 is slidably connected between the inner walls of both sides of the bridge plate 4, a telescopic bracket 14 is fixed on the top of the mounting frame 11, one end of the telescopic bracket 14 extends to one side of the bridge plate 4, and an arc-shaped clamping plate 9 is fixed on one end of the telescopic bracket 14;

[0027] An arc-shaped support plate 16 is fixed to the bottom of the mounting frame 11 near the other side, a double-output shaft cylinder 17 is fixed to the top of the mounting frame 11, a slide plate 18 is slidably installed on both the front and rear sides of the mounting frame 11, a second cylinder 15 is fixed to the inner side of the telescopic bracket 14, and the output end of the second cylinder 15 is fixed to the movable end of the telescopic bracket 14;

[0028] When fixing and restraining the curved gantry plate 8, first place the gantry plate 8 on the conveyor belt 3 and convey it to the bottom of the bridge plate 4, then start the first cylinder 6 to drive the movable plate 10 and the mounting frame 11 to slide downward inside the bridge plate 4, so that the limit plate 12 is engaged on the horizontal side of the gantry plate 8, and while the mounting frame 11 descends, the arc support plate 16 is supported on one side of the arc surface of the gantry plate 8, then contract the second cylinder 15, so that the arc clamping plate 9 can be driven to clamp and fix the gantry plate 8, thereby avoiding contact with the arc edge point of the arc clamping plate 9 during fixation, resulting in unstable fixation.

[0029] Furthermore, one side of the two slides 18 is fixed to the output end of the dual-output shaft cylinder 17, and telescopic rods 13 are provided at the bottom of the two slides 18 near the edges on both sides. The second cylinder 15 and the mounting frame 11 are fixed to each other, and the dual-output shaft cylinder 17 can drive the slides 18 to move synchronously relative to each other.

[0030] In order to make the mounting frame 11 slide more smoothly, a limit plate 12 is fixed at the bottom of the two telescopic rods 13, a conveyor belt 3 is arranged on the top of the workbench 1, and a plurality of guide grooves 7 are opened on both sides of the bridge plate 4.

[0031] like Figure 1-4 As shown, the bottom of the arc-shaped support plate 16 is flush with the bottom of the arc-shaped clamping plate 9, a movable plate 10 is fixed to the top of the telescopic bracket 14, and both ends of the mounting frame 11 are correspondingly slidably engaged in the guide groove 7, the bottom of the movable plate 10 is fixed to the top of the mounting frame 11 near the edges on both sides, and the top of the movable plate 10 is fixed with guide rods 5 at the four corners, and multiple guide rods 5 slide through the top of the bridge plate 4, and a first cylinder 6 is fixed to the top of the bridge plate 4, and the output end of the first cylinder 6 slides through the inside of the bridge plate 4 and is fixed to the top of the movable plate 10, and shock-absorbing pads 2 are fixed to the bottom of the workbench 1 near the edges on both sides, and a door frame plate 8 is provided on the top of the conveyor belt 3.

[0032] When the limit plate 12 limits the horizontal side of the portal plate 8, the contraction of the dual-output shaft cylinder 17 can drive the slide plate 18 to slide relatively on the mounting frame 11, thereby driving the limit plate 12 to clamp and fit the horizontal side of the portal plate 8. When the mounting frame 11 slides inside the bridge plate 4, the side of the mounting frame 11 is extended to the inside of the guide groove 7, thereby ensuring the stability of the mounting frame 11 when sliding.

[0033] Working principle: when fixing and restraining the portal plate 8 with an arc, first place the portal plate 8 on the conveyor belt 3 and convey it to the bottom of the bridge plate 4, then start the first cylinder 6 to drive the movable plate 10 and the mounting frame 11 to slide downward inside the bridge plate 4, so that the limit plate 12 is engaged with the horizontal side of the portal plate 8, and when the mounting frame 11 descends, the arc support plate 16 is pressed against the arc surface of one side of the portal plate 8, and then the second cylinder 15 is retracted, so that the arc clamping plate 9 can be driven to clamp the portal plate 8 Fixed, so as to avoid contact with the arc edge point of the arc clamping plate 9 during fixation, which would cause unstable fixation. When the limit plate 12 limits the horizontal side of the door frame plate 8, the contraction of the dual-output shaft cylinder 17 can drive the slide plate 18 to slide relatively on the mounting frame 11, thereby driving the limit plate 12 to clamp and fit the horizontal side of the door frame plate 8. When the mounting frame 11 slides inside the bridge plate 4, the side of the mounting frame 11 is extended to the inside of the guide groove 7, thereby ensuring the stability of the mounting frame 11 during sliding.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding positioning device for a forklift mast, comprising a workbench (1), characterized in that: A bridge plate (4) is arranged on the top of the workbench (1), a mounting frame (11) is slidably connected between the inner walls on both sides of the bridge plate (4), a telescopic bracket (14) is fixed on the top of the mounting frame (11), one end of the telescopic bracket (14) extends to one side of the bridge plate (4), and an arc-shaped clamping plate (9) is fixed on one end of the telescopic bracket (14); An arc-shaped support plate (16) is fixed at the bottom of the mounting frame (11) near the other side, a double-output shaft cylinder (17) is fixed at the top of the mounting frame (11), slide plates (18) are slidably mounted on both the front and rear sides of the mounting frame (11), a second cylinder (15) is fixed on the inner side of the telescopic bracket (14), and the output end of the second cylinder (15) is fixed to the movable end of the telescopic bracket (14) with respect to each other.

2. The welding positioning device for a forklift mast according to claim 1, characterized in that: One side of the two slides (18) is fixed to the output end of the dual-output shaft cylinder (17), and telescopic rods (13) are provided at the bottom of the two slides (18) near the edges on both sides. The second cylinder (15) and the mounting frame (11) are fixed to each other.

3. The welding positioning device for a forklift mast according to claim 2, characterized in that: A limiting plate (12) is fixed at the bottom of the two telescopic rods (13), a conveyor belt (3) is arranged on the top of the workbench (1), and a plurality of guide grooves (7) are opened on both sides of the bridge plate (4).

4. The welding positioning device for a forklift mast according to claim 3, characterized in that: The bottom of the arc-shaped support plate (16) is flush with the bottom of the arc-shaped clamping plate (9), a movable plate (10) is fixed to the top of the telescopic bracket (14), and both ends of the mounting frame (11) are correspondingly slidably engaged in the inside of the guide groove (7).

5. The welding positioning device for a forklift mast according to claim 4, characterized in that: The fixed bottom of the movable plate (10) is fixed to the top of the mounting frame (11) near the edges on both sides, and guide rods (5) are fixed to the top of the movable plate (10) at the four corners.

6. The welding positioning device for a forklift mast according to claim 5, characterized in that: The plurality of guide rods (5) are all slidably penetrated to the top of the bridge plate (4), a first cylinder (6) is fixed to the top of the bridge plate (4), and an output end of the first cylinder (6) is slidably penetrated to the inside of the bridge plate (4) and is fixed to the top of the movable plate (10).

7. The welding positioning device for a forklift mast according to claim 3, characterized in that: Shock-absorbing pads (2) are fixed to the bottom of the workbench (1) near the edges on both sides, and a door frame plate (8) is arranged on the top of the conveyor belt (3).

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