A forklift mast section steel welding device

Abstract

The present invention relates to the technical field of welding devices, and particularly to a welding device for forklift mast steel sections, comprising: a base, a welding mechanism, a first fixture, a second fixture, and a bracket; the bracket is fixedly connected to the base; two of the first fixtures are symmetrically fixedly connected to both sides of the base; the second fixture is installed on the base and is located between the two second fixtures; an extrusion mechanism is provided on the base; the extrusion mechanism extrudes the periphery of the portion of the forklift mast steel section that needs to be welded, offsetting the deformation generated during welding; by providing the extrusion mechanism, the steel sections are clamped around the portions that need to be welded on the two steel sections, and the portions that need to be welded on the two steel sections are exposed through the openings. Therefore, when the welding mechanism performs welding, the portions around the welding site are clamped. Thus, when the welding site deforms, the clamping force offsets the stress of the deformation of the steel section, thereby alleviating the deformation of the steel section during welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and particularly to a welding device for forklift mast section steels. Background Art

[0002] The mast of a forklift is an important component of the forklift, mainly used to support and lift goods. The design of the forklift mast allows the forklift to perform vertical lifting of goods during operation. It is usually composed of multiple overlapping steel structures and can be lifted and tilted through a hydraulic system. The stability and structural strength of the forklift mast are crucial for the overall safety and operating efficiency of the forklift;

[0003] The mast of a forklift is usually manufactured and assembled through a welding process. The section steels of each mast component are fixed and spliced together by tooling jigs, and then the welding device welds between the section steels of each mast. After welding, subsequent treatments such as grinding, deburring, and painting are carried out;

[0004] During the welding process, a large amount of heat is generated, which will cause local expansion of the welded components. Subsequently, uneven shrinkage may occur during cooling, resulting in structural deformation. This deformation may affect the size and shape of the mast, thereby affecting the overall structure and performance of the forklift, and further causing limitations.

[0005] Therefore, we propose a welding device for forklift mast section steels. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a welding device for forklift mast section steels, which overcomes the deficiencies of the prior art and aims to solve the problems in the background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A welding device for forklift mast section steels, comprising: a base, a welding mechanism, a first fixture, a second fixture, and a bracket; the bracket is fixedly connected to the base; the two first fixtures are symmetrically fixedly connected to both sides of the base; the second fixture is installed on the base and is located between the two first fixtures;

[0008] An extrusion mechanism is provided on the base; the extrusion mechanism extrudes the periphery of the welding part of the forklift mast section steel to offset the deformation generated during welding when welding.

[0009] Preferably, the extrusion mechanism includes a mounting block, a fixing block, and an extrusion block; the mounting block is mounted on the base; the fixing block is mounted on the mounting block, and an extrusion groove is formed in the fixing block; the extrusion block is slidably connected in the extrusion groove; a slant block is slidably connected in the extrusion groove; an extrusion rod is rotatably connected to the fixing block; the extrusion rod is threadedly connected to the slant block; an extrusion motor is fixedly connected to the fixing block; an output end of the extrusion motor is fixedly connected to the extrusion rod; an inclined surface of the slant block abuts against the extrusion block; an extrusion spring is fixedly connected between the extrusion block and the fixing block; an opening is formed in the extrusion block.

[0010] By providing the extrusion mechanism, the profiled steels are clamped around the parts to be welded on the two profiled steels, and the parts of the two profiled steels to be welded are exposed through the opening. Therefore, when the welding mechanism performs welding, the parts around the welding part are clamped. Thus, when the welding part deforms, the clamping force offsets the stress of the deformation of the profiled steel, thereby alleviating the deformation of the profiled steel during welding.

[0011] Preferably, a moving block is slidably connected to the base; a moving motor is fixedly connected to the base; an output end of the moving motor is fixedly connected to a lead screw that is in threaded cooperation with the moving block; lifting grooves are uniformly formed in the moving block; a lifting electric push rod is fixedly connected in the lifting groove, and a lifting block is slidably connected in the lifting groove; an output end of the lifting electric push rod is fixedly connected to the lifting block; the second clamp is fixedly connected to the lifting block.

[0012] Preferably, a sliding groove is formed in the base; two sliding grooves are provided on both sides of the second clamp; a sliding block is slidably connected in the sliding groove; a sliding motor is fixedly connected to the base; an output end of the sliding motor is fixedly connected to a lead screw that is in threaded cooperation with the sliding block.

[0013] Preferably, a telescopic block is slidably connected to the sliding block; a telescopic electric push rod is fixedly connected between the telescopic block and the sliding block.

[0014] Preferably, the fixing block is rotatably connected to the mounting block; a transverse block is fixedly connected to the telescopic block; a reciprocating block is slidably connected to the transverse block, and a reciprocating electric push rod is fixedly connected between the transverse block and the reciprocating block; the mounting block is rotatably connected to the reciprocating block; a steering motor is fixedly connected to both the mounting block and the reciprocating block.

[0015] Preferably, the extrusion groove is inclined; a lower end surface of the extrusion block remains horizontal.

[0016] Preferably, the extrusion block is made of a metal material, and a heating element is provided inside the extrusion block.

[0017] By arranging two sets of fixing blocks, pressing blocks and mounting blocks on both sides of the second fixture, and arranging a heating element in the pressing block, the heating element makes the temperature of the profiled bar drop slowly after welding, which can prevent the temperature from dropping too fast and causing deformation. At the same time, the two pressing blocks alternately clamp the profiled bar. After the welding mechanism completes the welding of the profiled bar clamped by the first pressing block, the first pressing block continues to clamp the profiled bar, and the second pressing block clamps the part of the next profiled bar to be welded, improving the welding efficiency.

[0018] Advantages of the present invention:

[0019] 1. By arranging a pressing mechanism, the present invention clamps the profiled bar around the parts to be welded on the two profiled bars, and exposes the parts of the two profiled bars to be welded through an opening. Therefore, when the welding mechanism performs welding, it clamps the part around the welding part. Therefore, when the part around the welding part deforms, the clamping force offsets the stress of the deformation of the profiled bar, thereby alleviating the deformation of the profiled bar during welding.

[0020] 2. By arranging two sets of fixing blocks, pressing blocks and mounting blocks on both sides of the second fixture, and arranging a heating element in the pressing block, the heating element makes the temperature of the profiled bar drop slowly after welding, which can prevent the temperature from dropping too fast and causing deformation. At the same time, the two pressing blocks alternately clamp the profiled bar. After the welding mechanism completes the welding of the profiled bar clamped by the first pressing block, the first pressing block continues to clamp the profiled bar, and the second pressing block clamps the part of the next profiled bar to be welded, improving the welding efficiency. Description of the drawings

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is Figure 1 an enlarged view of part A in

[0023] Figure 3 is Figure 2 an enlarged view of part B in

[0024] Figure 4 is a partial cross-sectional view of the moving block, lifting block and second fixture in the present invention;

[0025] Figure 5 is a cross-sectional view of the sliding block, mounting block, fixing block and pressing block in the present invention;

[0026] Figure 6 is Figure 5 a cross-sectional view of the fixing block and the pressing block under the cross-sectional view of C-C in

[0027] In the figure: 1. Base; 11. Welding mechanism; 12. First fixture; 13. Second fixture; 2. Moving block; 21. Moving motor; 22. Lifting groove; 23. Lifting electric push rod; 24. Lifting block; 31. Mounting block; 32. Fixed block; 33. Extrusion block; 36. Extrusion groove; 37. Inclined block; 38. Extrusion rod; 39. Extrusion motor; 4. Extrusion spring; 5. Sliding groove; 51. Sliding block; 52. Sliding motor; 53. Telescopic block; 54. Telescopic electric push rod; 6. Transverse block; 61. Reciprocating block; 62. Reciprocating electric push rod; 63. Heating element; 64. Steering motor. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1: Refer to the attached drawings of the specification Figure 1 , a forklift mast section steel welding device, comprising: a base 1, a welding mechanism 11, a first fixture 12, a second fixture 13 and a bracket; the bracket is fixedly connected to the base 1; two first fixtures 12 are symmetrically fixedly connected to both sides of the base 1; the second fixture 13 is installed on the base 1 and is located between the two first fixtures 12;

[0030] An extrusion mechanism is provided on the base 1; the extrusion mechanism extrudes the periphery of the welding part of the forklift mast section steel to offset the deformation generated during welding when welding.

[0031] Refer to the attached drawings of the specification Figure 2 and 6 , in the present invention, the extrusion mechanism includes a mounting block 31, a fixed block 32 and an extrusion block 33; the mounting block 31 is installed on the base 1; the fixed block 32 is installed on the mounting block 31, and an extrusion groove 36 is formed on the fixed block 32; the extrusion block 33 is slidably connected in the extrusion groove 36; an inclined block 37 is slidably connected in the extrusion groove 36; an extrusion rod 38 is rotatably connected to the fixed block 32; the extrusion rod 38 is threadedly connected to the inclined block 37; an extrusion motor 39 is fixedly connected to the fixed block 32; the output end of the extrusion motor 39 is fixedly connected to the extrusion rod 38; the inclined surface of the inclined block 37 is in contact with the extrusion block 33; an extrusion spring 4 is fixedly connected between the extrusion block 33 and the fixed block 32; an opening is formed on the extrusion block 33.

[0032] In the present invention, the forklift mast section steel is placed on the first fixture 12 and the second fixture 13. The first fixture 12 and the second fixture 13 clamp the forklift mast section steel. Subsequently, the fixing block 32 moves, such that both sides of the fixing block 32 are located on the upper and lower sides of the section steel clamped on the first fixture 12 and the second fixture 13. Subsequently, the extrusion motor 39 drives the extrusion rod 38 to rotate, such that the inclined block 37 moves, thereby extruding the extrusion block 33 downward. The extrusion block 33 clamps on the upper and lower sides of the two section steels, and the opening on the extrusion block 33 is located above and below the contact part of the two section steels. Subsequently, the welding torch of the welding mechanism 11 moves and extends into the opening on the extrusion block 33 to weld the two section steels;

[0033] By arranging the extrusion mechanism, the present invention clamps the section steel around the parts that need to be welded on the two section steels, and exposes the parts that need to be welded on the two section steels through the opening. Therefore, when the welding mechanism 11 performs welding, it clamps the parts around the welding part. Therefore, when the parts around the welding part deform, the clamping force offsets the stress of the deformation of the section steel, thereby alleviating the deformation of the section steel during welding.

[0034] Referring to the attached drawings 1, 3 and 4 of the specification, in the present invention, a moving block 2 is slidably connected to the base 1; a moving motor 21 is fixedly connected to the base 1; the output end of the moving motor 21 is fixedly connected to a lead screw that is in threaded cooperation with the moving block 2; the moving block 2 is uniformly provided with lifting grooves 22; a lifting electric push rod 23 is fixedly connected in the lifting grooves 22; a lifting block 24 is slidably connected in the lifting grooves 22; the output end of the lifting electric push rod 23 is fixedly connected to the lifting block 24; the second fixture 13 is fixedly connected to the lifting block 24.

[0035] In the present invention, the second fixture 13 is installed on the moving block 2. A plurality of connecting section steels are welded between the brackets on both sides of the forklift mast section steel. The connecting section steels are clamped on the second fixture 13 on the moving block 2. The moving motor 21 drives the corresponding lead screw to rotate, such that the moving block 2 moves, thereby the second fixture 13 drives the section steel to move forward until the section steel clamped on the first second fixture 13 is aligned with the section steels on both sides. After the section steel on the first second fixture 13 is welded to the section steels on both sides, the first second fixture 13 releases the section steel, and the corresponding lifting electric push rod 23 pulls the lifting block 24 downward, such that the first second fixture 13 moves downward, and the moving block 2 moves forward again. The section steel on the second second fixture 13 is aligned with the section steels on both sides for welding.

[0036] Embodiment 2: On the basis of Embodiment 1, referring to the attached drawings of the specification Figure 5 , in the present invention, a sliding groove 5 is formed on the base 1; two sliding grooves 5 are provided on both sides of the second fixture 13; a sliding block 51 is slidably connected in the sliding groove 5; a sliding motor 52 is fixedly connected to the base 1; the output end of the sliding motor 52 is fixedly connected to a lead screw that is in threaded cooperation with the sliding block 51.

[0037] A telescopic block 53 is slidably connected to the sliding block 51; a telescopic electric push rod 54 is fixedly connected between the telescopic block 53 and the sliding block 51.

[0038] In the present invention, the fixed block 32 is rotatably connected to the mounting block 31; a transverse block 6 is fixedly connected to the telescopic block 53; a reciprocating block 61 is slidably connected to the transverse block 6; a reciprocating electric push rod 62 is fixedly connected between the transverse block 6 and the reciprocating block 61; the mounting block 31 is rotatably connected to the reciprocating block 61; steering motors 64 are fixedly connected to both the mounting block 31 and the reciprocating block 61.

[0039] In the present invention, the extrusion groove 36 is inclined; the lower end surface of the extrusion block 33 remains horizontal.

[0040] In the present invention, the extrusion block 33 is made of a metal material, and a heating element 63 is provided inside the extrusion block 33.

[0041] In the present invention, the sliding motor 52 drives the corresponding lead screw to rotate, so that the sliding block 51 drives the fixed block 32 and the extrusion block 33 to move. The fixed block 32 is rotatably connected to the mounting block 31, and the mounting block 31 is rotatably connected to the reciprocating block 61. Therefore, in the present invention, the steering motor 64 can rotate the mounting block 31 and the fixed block 32, thereby adjusting the direction of the fixed block 32, so that the extrusion block 33 on the fixed block 32 can clamp different positions on the profiled steel, such as the upper and lower sides and the left and right sides;

[0042] In the present invention, two sets of components such as the fixed block 32, the extrusion block 33 and the mounting block 31 are provided on both sides of the second fixture 13. Therefore, the extrusion blocks 33 on the two fixed blocks 32 alternately clamp the profiled steel. Therefore, after the welding mechanism 11 completes the welding of the profiled steel clamped by the first extrusion block 33, the first extrusion block 33 continues to clamp the profiled steel, and the second extrusion block 33 clamps the part of the next profiled steel to be welded. After the welding mechanism 11 completes the welding of the second welding part, the first extrusion block 33 releases the profiled steel and moves to the next welding part; in the present invention, a heating element 63 is provided inside the extrusion block 33. Therefore, after the profiled steel welding is completed, the heating element 63 is heated and slowly cooled, thereby preventing the profiled steel from cooling too quickly and deforming;

[0043] In the present invention, the extrusion groove 36 is inclined. Compared with the horizontal setting, the inclined extrusion groove 36 can shorten the distance when the extrusion block 33 moves, and further reduce the thickness on both sides of the fixed block 32;

[0044] In the present invention, two sets of fixing blocks 32, extrusion blocks 33 and mounting blocks 31 are arranged on both sides of the second fixture 13, and a heating element 63 is arranged in the extrusion block 33. After the section steel is welded, the heating element 63 enables the temperature of the section steel to drop slowly, which can prevent the temperature from dropping too fast and causing deformation. At the same time, the two extrusion blocks 33 alternately clamp the section steel. After the welding mechanism 11 completes the welding of the section steel clamped by the first extrusion block 33, the first extrusion block 33 continues to clamp the section steel, and the second extrusion block 33 clamps the part of the next section steel to be welded, improving the welding efficiency.

[0045] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed; the scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A forklift gantry steel welding device, characterized in that: include: A base (1), a welding mechanism (11), a No. 1 clamp (12), a No. 2 clamp (13) and a bracket; the bracket is fixedly connected to the base (1); two No. 1 clamps (12) are symmetrically fixedly connected to two sides of the base (1); the No. 2 clamp (13) is installed on the base (1) and is located between the two No. 1 clamps (12); The base (1) is provided with an extrusion mechanism; the extrusion mechanism extrudes the periphery of the forklift mast steel section that needs to be welded, thereby offsetting the deformation caused by welding during welding; The extrusion mechanism comprises a mounting block (31), a fixed block (32) and an extrusion block (33); the mounting block (31) is mounted on the base (1); the fixed block (32) is mounted on the mounting block (31), and an extrusion groove (36) is provided on the fixed block (32); the extrusion block (33) is slidably connected in the extrusion groove (36); an inclined block (37) is slidably connected in the extrusion groove (36); an extrusion rod (38) is rotatably connected to the fixed block (32); the extrusion rod (38) and the inclined block (37) are threadedly connected; an extrusion motor (39) is fixedly connected to the fixed block (32); an output end of the extrusion motor (39) is fixedly connected to the extrusion rod (38); an inclined surface on the inclined block (37) is in contact with the extrusion block (33); an extrusion spring (4) is fixedly connected between the extrusion block (33) and the fixed block (32); and an opening is provided on the extrusion block (33); A moving block (2) is slidably connected to the base (1); a moving motor (21) is fixedly connected to the base (1); a screw rod that is threadedly matched with the moving block (2) is fixedly connected to the output end of the moving motor (21); lifting grooves (22) are evenly provided on the moving block (2); a lifting electric push rod (23) is fixedly connected in the lifting groove (22), and a lifting block (24) is slidably connected in the lifting groove (22); the output end of the lifting electric push rod (23) is fixedly connected to the lifting block (24); the second clamp (13) is fixedly connected to the lifting block (24); The base (1) is provided with a sliding groove (5); two sliding grooves (5) are provided on both sides of the second clamp (13); a sliding block (51) is slidably connected in the sliding groove (5); a sliding motor (52) is fixedly connected to the base (1); a screw rod threadedly matched with the sliding block (51) is fixedly connected to the output end of the sliding motor (52); A telescopic block (53) is slidably connected to the sliding block (51); a telescopic electric push rod (54) is fixedly connected between the telescopic block (53) and the sliding block (51); The fixed block (32) is rotatably connected to the mounting block (31); a transverse block (6) is fixedly connected to the telescopic block (53); a reciprocating block (61) is slidably connected to the transverse block (6), and a reciprocating electric push rod (62) is fixedly connected between the transverse block (6) and the reciprocating block (61); the mounting block (31) is rotatably connected to the reciprocating block (61); a steering motor (64) is fixedly connected to both the mounting block (31) and the reciprocating block (61); The extrusion groove (36) is arranged obliquely; the lower end surface of the extrusion block (33) is kept in a horizontal state; The extrusion block (33) is made of a metal material, and a heating element (63) is arranged inside the extrusion block (33).

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