Assembling and welding tool for top beam of portal frame of heavy-duty forklift

Abstract

The utility model discloses a heavy-duty forklift gantry top beam assembling and welding tool which comprises an assembling and welding platform, a top plate positioning pin shaft, an inner side plate positioning device and an inner and outer side plate distance positioning device are installed on the upper surface of the assembling and welding platform, and the assembling and welding platform is configured to position a heavy-duty forklift gantry top beam before welding. The device is simple in structure, under the interaction of the installing and welding platform, the top plate positioning pin shaft, the inner side plate positioning device and the inner and outer side plate distance positioning device, accurate positioning during product installing and welding is achieved, and the centering size of the inner and outer side plates is guaranteed; operation is simple, and working efficiency is high; the whole mold can be operated without special tools such as a wrench, and all operations can be easily assembled and disassembled in a very labor-saving state, so that the operation is very simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift door frame top beam assembly welding, in particular to a heavy-duty forklift door frame top beam assembly welding tool. Background Art

[0002] The top beam assembly of the heavy-duty forklift gantry is welded together by 1 top plate, 2 top beam inner side plates and 2 top beam outer side plates. Figure 1 As shown; during assembly welding, it is necessary to ensure the spacing between the inner plate and the outer plate and the distance from the center of the spacing to the center of the top plate. If the on-site manual welding is performed without the use of an assembly welding fixture, the operation will be very cumbersome, labor-intensive, and will affect the production efficiency and product quality of the subsequent processes. For this reason, a heavy-duty forklift gantry top beam assembly welding fixture is proposed. Utility Model Content

[0003] The utility model aims to provide a heavy-duty forklift door frame top beam assembly welding tool to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy-duty forklift mast top beam assembly welding tool, comprising an assembly welding platform, the upper surface of which is equipped with a top plate positioning pin, an inner plate positioning device and an inner and outer plate spacing positioning device, and is configured to position the heavy-duty forklift mast top beam before welding.

[0005] As a further solution of the utility model: the number of the top plate positioning pin shaft, the inner plate positioning device and the inner and outer plate spacing positioning device are all two, and they are symmetrically installed on the upper surface of the assembly welding platform.

[0006] As a further solution of the utility model: the inner and outer plate spacing positioning device includes a hollow square sleeve, and U-shaped blocks are installed on the vertical surfaces of two opposite sides of the hollow square sleeve, and a support block for fixing its height is installed on the lower surface of the hollow square sleeve.

[0007] As a further solution of the utility model: the inner plate positioning device includes a support frame installed on the upper surface of the assembly welding platform, and a flippable inner plate positioning bracket is installed on the support frame.

[0008] As a further solution of the utility model: two positioning pins are installed on the surface of the support frame, and two pin holes are provided on the inner plate positioning bracket for convenient insertion of the positioning pins, one of the positioning pins is fixedly connected to the inner plate positioning bracket and rotatably connected to the support frame, and the other positioning pin is movably connected to both the support frame and the inner plate positioning bracket.

[0009] As a further solution of the utility model: a limit strip is detachably mounted on the surface of the inner plate positioning bracket by means of bolts.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a novel structure, and through the interaction between the welding platform, the top plate positioning pin, the inner plate positioning device and the inner and outer plate spacing positioning device, accurate positioning of the product during welding is achieved, and the centering size of the inner and outer plates is guaranteed; the operation is simple and the operating efficiency is high; the overall mold operation does not require special tools such as wrenches, and all operations can be easily installed and demolded in a very labor-saving state, and the operation is also very simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the product to be welded in the utility model;

[0012] Figure 2 This is a schematic diagram of the welding tool structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the welding tool structure (with products) of the utility model;

[0014] Figure 4 It is a schematic diagram of the inner plate positioning device of the utility model;

[0015] Figure 5 This is a schematic diagram of the inner plate positioning bracket of the utility model;

[0016] Figure 6 It is a schematic diagram of the inner and outer plate spacing positioning device of the utility model;

[0017] In the figure: 1. welding platform; 2. top plate positioning pin; 3. inner plate positioning device; 31. support frame; 32. inner plate positioning bracket; 33. positioning pin; 4. inner and outer plate spacing positioning device. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-6In an embodiment of the utility model, a heavy-duty forklift portal frame top beam assembly welding tool comprises an assembly welding platform 1, and a top plate positioning pin shaft 2, an inner side plate positioning device 3 and an inner and outer side plate spacing positioning device 4 are installed on the upper surface of the assembly welding platform 1, and are configured to position the heavy-duty forklift portal frame top beam before welding. Furthermore, the number of the top plate positioning pin shaft 2, the inner side plate positioning device 3 and the inner and outer side plate spacing positioning device 4 are all two, which are symmetrically installed on the upper surface of the assembly welding platform 1, so as to ensure that the product is better positioned during the processing process. The product is welded from 1 top plate, 2 top beam inner side plates and 2 top beam outer side plates.

[0020] See also Figure 6 In one embodiment, in this embodiment, preferably, the inner and outer plate spacing positioning device 4 includes a hollow square sleeve, and U-shaped blocks are installed on the vertical surfaces of two opposite sides of the hollow square sleeve, and a support block for fixing its height is installed on the lower surface of the hollow square sleeve.

[0021] Specifically, by combining a hollow square sleeve with multiple U-shaped blocks, the distance between the outer plate of the top beam and the inner plate of the top beam can be limited. When the outer plate of the top beam and the inner plate of the top beam are both attached to the surface of the U-shaped block, the positions of both are fixed, and then the fixed outer plate of the top beam and the inner plate of the top beam are spot welded. Secondly, under the action of the support block, the height of the hollow square sleeve is limited.

[0022] See also Figure 4 In one embodiment, in this embodiment, preferably, the inner plate positioning device 3 includes a support frame 31 installed on the upper surface of the assembly welding platform 1, and a flippable inner plate positioning bracket 32 ​​is installed on the support frame 31. When in use, the inner plate positioning bracket 32 ​​is used to limit the inner plate of the top beam away from the inner and outer plate spacing positioning device 4.

[0023] See also Figure 4 In one embodiment, in this embodiment, preferably, two positioning pins 33 are installed on the surface of the support frame 31, and two pin holes are provided on the inner plate positioning bracket 32 ​​for convenient insertion of the positioning pins 33, one of the positioning pins 33 is fixedly connected to the inner plate positioning bracket 32 ​​and is rotatably connected to the support frame 31, and the other positioning pin 33 is movably connected to both the support frame 31 and the inner plate positioning bracket 32.

[0024] Specifically, the inner plate positioning bracket 32 ​​is initially positioned by the positioning pin 33 fixedly connected to the inner plate positioning bracket 32, ensuring that the inner plate positioning bracket 32 ​​rotates axially synchronously with the positioning pin 33. When the inner plate positioning bracket 32 ​​is lowered and contacts the top plate, another positioning pin 33 is inserted. This ensures that the inner plate positioning bracket 32 ​​cannot be flipped over, achieving a better limiting effect. Secondly, after the positioning pin 33 is pulled out, the inner plate positioning bracket 32 ​​can continue to flip over.

[0025] See also Figure 5 In one embodiment, in this embodiment, preferably, a limit strip is detachably installed on the surface of the inner plate positioning bracket 32 ​​by bolts. Further, under the action of the limit strip, the vertical surfaces on the same side of the outer plate of the top beam and the inner plate of the top beam can be positioned.

[0026] The working principle and use process of the utility model are as follows: the top plate is fixed by the top plate positioning pin shaft 2, and then the inner plate positioning bracket 32 ​​is turned over to position the inner plate, and the inner plate is spot welded, and the inner plate is used as a backing plate, and the outer plate is positioned by the inner and outer plate spacing positioning device 4, and the outer plate is spot welded, thereby completing the assembly welding of the door frame top beam.

[0027] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0028] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A heavy-duty forklift gantry top beam assembly welding tool, characterized in that: The assembly welding platform (1) comprises a top plate positioning pin shaft (2), an inner plate positioning device (3) and an inner and outer plate spacing positioning device (4) installed on the upper surface of the assembly welding platform (1), and is configured to position the top beam of a heavy forklift door frame before welding; The number of the top plate positioning pin shaft (2), the inner plate positioning device (3) and the inner and outer plate spacing positioning device (4) are all two, and they are symmetrically mounted on the upper surface of the assembly welding platform (1); The inner and outer plate spacing positioning device (4) comprises a hollow square sleeve, and U-shaped blocks are installed on the vertical surfaces of two opposite sides of the hollow square sleeve, and a support block for fixing the height of the hollow square sleeve is installed on the lower surface of the hollow square sleeve; The inner plate positioning device (3) comprises a support frame (31) installed on the upper surface of the assembly welding platform (1), and a flippable inner plate positioning bracket (32) is installed on the support frame (31).

2. The heavy-duty forklift gantry top beam assembly welding tool according to claim 1 is characterized in that: Two positioning pins (33) are installed on the surface of the support frame (31), and two pin holes for convenient insertion of the positioning pins (33) are provided on the inner plate positioning bracket (32), one of the positioning pins (33) is fixedly connected to the inner plate positioning bracket (32) and is rotatably connected to the support frame (31), and the other positioning pin (33) is movably connected to both the support frame (31) and the inner plate positioning bracket (32).

3. The heavy-duty forklift gantry top beam assembly welding tool according to claim 1 is characterized in that: The surface of the inner plate positioning bracket (32) is detachably mounted with a limit strip via bolts.

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