Auxiliary tailor-welding device for left and right cross beams of loader hood framework

Abstract

According to the auxiliary tailor-welding device for the left cross beam and the right cross beam of the loader hood framework, a plurality of positioning welds are used in a matched mode, all parts, needing tailor-welding, of a workpiece are positioned in sequence, and finally the workpiece is clamped through a rapid clamping assembly, so that the accuracy and firmness of the workpiece during tailor-welding are guaranteed, and the working efficiency is improved. The welding pieces for positioning parts are all steel plates cut by laser, compared with a traditional tool, a machining procedure is omitted, the precision error of laser cutting is + / -0.2 mm, and the requirement for the precision of the tailor-welding position of the workpieces is met. Moreover, the manufacturing period is short, all parts are formed by laser cutting, all machining procedures are omitted, the steel plate can be directly assembled and welded after laser cutting and blanking, meanwhile, the machining cost is saved, practice proves that compared with traditional machining, the manufacturing period of the device is shortened to one tenth of the original manufacturing period, and the production efficiency is improved. And the manufacturing cost of the device is greatly reduced, the tailor-welding precision can meet the production requirement, and the purposes of being high in quality, low in price and capable of being used immediately after being manufactured are really achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of loader welding, in particular to an auxiliary welding device for left and right cross beams of a loader hood frame. Background Art

[0002] The hood is the main exterior part of the loader. It hides the engine, air conditioner, water tank and other important cooling systems. In addition to beautifying the appearance, it also plays a role in dust prevention and protection. It is an indispensable part of the entire loader. The hood is usually a 2mm thick steel plate pressed into the required shape by a special pressing die, and the bolt lock holes are punched out at the same time. It is fixed to the hood frame by bolts. Therefore, the accuracy of the welding position of the threaded lock block on the hood frame directly determines whether the hood can be assembled smoothly.

[0003] like Figure 1 As shown, the left and right cross beams of the loader hood frame are welded parts formed by welding a rectangular tube group, a hook group, a first locking block group, a second locking block group, and a third locking block group.

[0004] For example Figure 1 The traditional welding method for the left and right beams of the loader hood frame shown is to use machining to make special welding fixtures, and position and clamp each part separately. This method can meet the precision requirements of welding, but because the fixtures are made by machining, the production cost is high and the production cycle is long. In addition, in actual production, there are many product models and specifications, so a lot of cost and time are required to make special fixtures. Once a new product is trial-produced and time is tight, the production cycle will be even more unable to meet the trial production needs if the traditional machining method is used to make fixtures. In this way, a new type of auxiliary welding device is urgently needed to achieve the goal of reducing production costs and shortening production cycles while ensuring the welding precision. Utility Model Content

[0005] The purpose of the utility model is to reduce the production cost and shorten the production cycle while ensuring the welding accuracy.

[0006] In order to achieve the purpose of the above utility model, the technical solution of the utility model is to provide an auxiliary welding device for the left and right cross beams of the loader hood frame, the left and right cross beams of the loader hood frame include a rectangular tube group, a plurality of hook groups, a first locking block group, a second locking block group and a third locking block group, and the auxiliary welding device includes:

[0007] A support platform, the upper surface of which is provided with a plurality of rectangular groove holes;

[0008] The first rectangular tube positioning welding group includes a plurality of first rectangular tube positioning weldings, and the first rectangular tube positioning welding is provided with a limiting surface for supporting the top of the rectangular tube in the rectangular tube group;

[0009] A rectangular tube positioning support welding group, comprising a plurality of rectangular tube positioning support weldings, wherein the rectangular tube positioning support weldings are provided with a first side limiter for supporting the side edges of the rectangular tubes in the rectangular tube group;

[0010] A hook positioning welding group, comprising a plurality of hook positioning weldings, wherein the hook positioning weldings position the hooks of the hook group through the side surface of the thickness side of the steel plate;

[0011] A first locking block positioning welding group, comprising a plurality of first locking block positioning weldings, wherein the first locking block positioning weldings are provided with a second side limiter for supporting the side edge of the first locking block in the first locking block group;

[0012] A second locking block positioning welding group, comprising a plurality of second locking block positioning weldings, wherein the second locking block positioning weldings are provided with a third side limiter for supporting the side edge of the second locking block in the second locking block group;

[0013] A third locking block positioning welding group, comprising a plurality of third locking block positioning weldings, wherein the third locking block positioning weldings are provided with a top limiter for supporting the top surface of the third locking block in the third locking block group;

[0014] A quick clamp assembly, comprising a quick clamp and a spacer block, the spacer block is connected to the bottom plate, the quick clamp is connected to the spacer block, and the quick clamp is used to clamp and fix the rectangular tube;

[0015] The first rectangular tube positioning welding group, the rectangular tube positioning support welding group, the hook positioning welding group, the first locking block positioning welding group, the second locking block positioning welding group, the third locking block positioning welding group and multiple quick clamping components are all provided with a second boss, which is matched and connected with multiple rectangular groove holes.

[0016] Preferably, the support platform comprises a leg welding group formed by welding a plurality of square tubes and a bottom plate provided with a plurality of the rectangular groove holes, and the leg welding group is used to elevate and strengthen the bottom plate.

[0017] Preferably, the positioning welding height of the first locking block is greater than or equal to the sum of the heights of the first locking block and the rectangular tube.

[0018] Preferably, the positioning welding height of the second locking block is greater than or equal to the sum of the heights of the second locking block and the rectangular tube.

[0019] Preferably, the first locking block is positioned and welded to form a first welding hole corresponding to the first locking block hole of the first locking block.

[0020] Preferably, the second locking block is positioned and welded to form a second welding hole corresponding to the second locking block hole of the second locking block.

[0021] The technical solution of the utility model proposes an auxiliary welding device for the left and right cross beams of the loader hood frame, which is used in conjunction with multiple positioning welds to position the various parts of the workpiece that need to be welded in turn, and finally clamp the workpiece with a quick clamp assembly to ensure the accuracy and firmness of the workpiece during welding. The welded parts for positioning the parts in the utility model are all steel plates cut by laser, which saves the machining process compared with traditional tooling. The precision error of laser cutting is ±0.2 mm, which meets the precision requirements of the workpiece welding position. In addition, the production cycle is short, all parts are laser cut, and all machining processes are exempted. The steel plates can be directly assembled and welded after laser cutting, which also saves processing costs. Practice has proved that compared with traditional machining, the production cycle of this device is shortened to one tenth of the original, and the production cost of the device is greatly reduced. The welding precision can also meet production needs, which is truly inexpensive and ready to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the left and right cross beams of the existing loader hood frame;

[0023] Figure 2 A schematic diagram of the overall structure of an auxiliary welding device for the left and right cross beams of a loader hood frame provided by an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the assembly relationship between the slot and the boss in the first rectangular tube positioning welding and the second rectangular tube positioning welding provided in an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the use of an auxiliary welding device for the left and right cross beams of a loader hood frame provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0027] like Figure 2 As shown, an embodiment of the utility model provides an auxiliary welding device for the left and right cross beams of a loader hood frame, comprising: a leg welding group 1, a head rectangular tube positioning welding group 2, a rectangular tube positioning support welding group 3, a hook positioning welding group 4, a first locking block positioning welding group 5, a second locking block positioning welding group 6, a third locking block positioning welding group 7, a plurality of quick clamping assemblies 8 and a base plate 9.

[0028] The outrigger welding group 1 is a frame welded from 40×40 square tubes of different lengths, which is mainly used to raise the height of the left and right crossbeam tooling of the loader hood frame to facilitate workers' operation. Secondly, the bottom plate 9 is welded to the upper surface of the outrigger welding group 1. The outrigger welding group 1 raises and strengthens the bottom plate 9, and also strengthens the strength of the bottom plate 9, ensuring the rigidity requirements of the entire device.

[0029] The bottom plate 9 is a 6 mm thick steel plate cut by laser, and has a plurality of laser cut rectangular groove holes on its surface for assembling and positioning the small steel plates with bosses.

[0030] The head rectangular tube positioning welding group 2, the rectangular tube positioning support welding group 3, the hook positioning welding group 4, the first locking block positioning welding group 5, the second locking block positioning welding group 6, the third locking block positioning welding group 7 and multiple quick clamping assemblies 8 are all provided with laser-cut bosses, which are inserted into the rectangular groove holes of the base plate 9 through the bosses, and the head rectangular tube positioning welding group 2, the rectangular tube positioning support welding group 3, the hook positioning welding group 4, the first locking block positioning welding group 5, the second locking block positioning welding group 6, the third locking block positioning welding group 7 and multiple quick clamping assemblies 8 are positioned on the base plate 9 in turn, and finally welded to the base plate 9.

[0031] The first rectangular tube positioning welding group 2 is welded by four small 6 mm thick steel plates cut by laser. The relative position relationship between the steel plates is ensured by the cooperation of slots and bosses. Figure 3 The schematic diagram of the slot and boss assembly relationship shown in the figure is mainly used to position the left end inclined surface of the head of the rectangular tube group.

[0032] The rectangular tube positioning support welding group 3 is formed by welding two small 6 mm thick steel plates cut out by laser, and its main function is to position the side and bottom of the rectangular tube group.

[0033] The hook positioning welding group 4 is formed by welding five small 6 mm thick steel plates cut out by laser, and is mainly used to locate the welding position of the hook group.

[0034] The first locking block positioning welding group 5 is formed by welding two small 6 mm thick steel plates cut out by laser, and its main function is to locate the position of the first locking block group.

[0035] The second locking block positioning welding group 6 is formed by welding two small 6 mm thick steel plates cut out by laser, and its main function is to locate the position of the second locking block group.

[0036] The third locking block positioning welding group 7 is formed by welding four small 6 mm thick steel plates cut out by laser, and its main function is to locate the position of the third locking block group.

[0037] The quick clamp assembly 8 is composed of a quick clamp and a spacer block, wherein the quick clamp bottom plate is spot welded on the upper surface of the spacer block, and the lower surface of the spacer block is spot welded on the bottom plate, which functions to clamp and fix the rectangular tube.

[0038] like Figure 4 As shown, the rectangular tube group is placed on the rectangular tube positioning support welding group 3, the side of the rectangular tube group is aligned with the side limit of the rectangular tube positioning support welding group 3, and the top of the rectangular tube group is against the limit surface of the head rectangular tube positioning welding group 2. At this time, the rectangular tube group can be completely positioned, and then the hook group, the first locking block group, the second locking block group, and the third locking block group are respectively limited by the hook positioning welding group 4, the first locking block positioning welding group 5, the second locking block positioning welding group 6, and the third locking block positioning welding group 7 to determine the corresponding welding position, and finally a plurality of quick clamping assemblies 8 are used to press the rectangular tube group, and the welding of the left and right cross beams of the loader hood frame begins.

Claims

1. An auxiliary welding device for the left and right cross beams of a loader hood frame, characterized in that: The left and right cross beams of the loader hood frame include a rectangular tube group, a plurality of hook groups, a first locking block group, a second locking block group and a third locking block group, and the auxiliary welding device includes: A support platform, the upper surface of which is provided with a plurality of rectangular groove holes; The first rectangular tube positioning welding group includes a plurality of first rectangular tube positioning weldings, and the first rectangular tube positioning welding is provided with a limiting surface for supporting the top of the rectangular tube in the rectangular tube group; A rectangular tube positioning support welding group, comprising a plurality of rectangular tube positioning support weldings, wherein the rectangular tube positioning support weldings are provided with a first side limiter for supporting the side edges of the rectangular tubes in the rectangular tube group; A hook positioning welding group, comprising a plurality of hook positioning weldings, wherein the hook positioning weldings position the hooks of the hook group through the side surface of the thickness side of the steel plate; A first locking block positioning welding group, comprising a plurality of first locking block positioning weldings, wherein the first locking block positioning weldings are provided with a second side limiter for supporting the side edge of the first locking block in the first locking block group; A second locking block positioning welding group, comprising a plurality of second locking block positioning weldings, wherein the second locking block positioning weldings are provided with a third side limiter for supporting the side edge of the second locking block in the second locking block group; A third locking block positioning welding group, comprising a plurality of third locking block positioning weldings, wherein the third locking block positioning weldings are provided with a top limiter for supporting the top surface of the third locking block in the third locking block group; A quick clamp assembly, comprising a quick clamp and a spacer block, the spacer block is connected to the bottom plate, the quick clamp is connected to the spacer block, and the quick clamp is used to clamp and fix the rectangular tube; The first rectangular tube positioning welding group, the rectangular tube positioning support welding group, the hook positioning welding group, the first locking block positioning welding group, the second locking block positioning welding group, the third locking block positioning welding group and multiple quick clamping components are all provided with a second boss, which is matched and connected with multiple rectangular groove holes.

2. The auxiliary welding device for the left and right cross beams of the loader hood frame according to claim 1, characterized in that: The support platform includes a leg welding group formed by welding a plurality of square tubes and a bottom plate provided with a plurality of the rectangular groove holes. The leg welding group is used to elevate and strengthen the bottom plate.

3. The auxiliary welding device for the left and right cross beams of the loader hood frame according to claim 1, characterized in that: The positioning welding height of the first locking block is greater than or equal to the sum of the heights of the first locking block and the rectangular tube.

4. The auxiliary welding device for the left and right cross beams of the loader hood frame according to claim 1, characterized in that: The positioning welding height of the second locking block is greater than or equal to the sum of the heights of the second locking block and the rectangular tube.

5. The auxiliary welding device for the left and right cross beams of the loader hood frame according to claim 1, characterized in that: The first locking block is positioned and welded to form a first welding hole corresponding to the first locking block hole of the first locking block.

6. The auxiliary welding device for the left and right cross beams of the loader hood frame according to claim 1, characterized in that: The second locking block is positioned and welded to form a second welding hole corresponding to the second locking block hole of the second locking block.

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