Truss group automatic welding equipment and production process thereof

Abstract

The invention discloses truss group automatic welding equipment which comprises a welding platform, a turnover frame is arranged on one side of the welding platform, multiple groups of trusses can be stacked on the turnover frame, a steel bar storage frame is arranged on the other side of the welding platform, and the steel bar storage frame is used for storing steel bar cross beams used for welding the truss groups; a movable first grabbing assembly, a movable second grabbing assembly and a movable welding assembly are arranged above the welding platform, the first grabbing assembly can grab a plurality of trusses which are stacked on the turnover frame and are at the same height at the same time and place the trusses on the welding platform, and the reinforcing steel bar storage frame can insert reinforcing steel bar cross beams into the upper portions of the trusses on the welding platform. The welding assembly can weld the steel bar cross beam and the multiple trusses together to form a truss set, and the second grabbing assembly can grab the welded truss set and place the welded truss set in a storage area to be stored. The truss group production line and the truss group production process are ingenious in structural design, high in automation degree and stable in welding quality, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering, and in particular to automatic welding equipment for a truss group and a production process thereof. Background Art

[0002] To speed up construction and save materials, steel truss floor slabs are gaining popularity in the engineering community and are increasingly being used. Steel truss floor slabs are manufactured by factory-processing the steel bars in the floor slab into steel trusses, and processing the galvanized steel sheets into corrugated steel sheets. The steel trusses and galvanized steel sheets are then resistance-welded to form a monolithic composite floor slab. During the construction phase, they replace formwork and scaffolding to bear construction loads, while the upper steel bars participate in structural load-bearing during use. They are an economical, convenient, safe, and reliable building floor material.

[0003] In recent years, the forms of steel truss floor decking have become more and more diverse, mainly including metal formwork and wooden formwork. The metal bottom formwork can be removed or not, while the wooden formwork generally needs to be removed. However, if the bottom plate is removed, it will be time-consuming and labor-intensive, and the concrete will be exposed, requiring plastering and then whitewashing. If the bottom plate is not removed, the metal bottom formwork cannot be plastered and whitewashed, so a suspended ceiling is required to cover the bottom formwork. Therefore, in response to the above-mentioned technical problems, the applicant has developed a truss plate that does not require disassembly, which buries the lower part of the steel truss in the concrete slurry. As the concrete slurry solidifies and forms, it is connected to the steel truss, that is, the connection between the bottom plate and the steel truss is completed during the production of the concrete bottom plate, which avoids the structural complexity of the bottom plate caused by the connection part of the steel truss, and reduces the installation of additional connectors and the workload of completing the connection between the steel truss and the bottom plate through the connectors.

[0004] In the process of producing the above-mentioned truss plates, steel trusses are usually placed one by one in a mold, and then concrete slurry is laid in the mold. After being vibrated and smoothed, it is formed. The formed truss plates can be used in construction projects. However, in actual production and processing, if the steel trusses are placed one by one manually, the workers' labor intensity is high and the production efficiency is low. In addition, the consistency of the spacing and height of the trusses cannot be guaranteed, which affects the quality of the final truss plates. Therefore, the applicant welded multiple steel trusses to form a truss group, and only one truss group needs to be placed in the mold, which effectively improves the production efficiency of the truss plate. However, truss plates are produced in large quantities. The use of manual welding of truss groups still brings problems of high labor intensity and low production efficiency for workers. In addition, it is also very dependent on the workers' welding skills. Therefore, it is urgent to design an automatic welding equipment for truss groups to improve the welding efficiency and quality of the truss groups. Summary of the Invention

[0005] The present invention provides a truss group automatic welding equipment and production process thereof, which has the effects of high production efficiency and high dimensional consistency. The specific technical solution is as follows:

[0006] A truss group automatic welding equipment, which includes a welding platform, a turnover frame is provided on one side of the welding platform, and multiple groups of trusses can be stacked on the turnover frame. A steel bar storage rack is provided on the other side of the welding platform, and the steel bar storage rack is used to store steel bar beams used for welding the truss group; a movable first grabbing assembly, a second grabbing assembly and a welding assembly are provided above the welding platform, the first grabbing assembly can grab multiple trusses of the same height stacked on the turnover frame at the same time and place them on the welding platform, the steel bar storage rack can insert the steel bar beams into the interior of multiple trusses on the welding platform, the welding assembly can weld the steel bar beams and multiple trusses together to form a truss group, and the second grabbing assembly can grab the welded truss group and place it in the storage area for storage.

[0007] Furthermore, the turnover rack includes a base, and a plurality of columns are symmetrically arranged at both ends in the length direction above the base, and a placement space is formed between two adjacent columns. A support frame matching the shape of the truss is provided at the bottom of the placement space, and the support frame can support the truss. Multiple groups of trusses can be stacked in the placement space respectively, so that multiple trusses can be evenly distributed on the same horizontal plane to be grasped by the first grasping component.

[0008] Furthermore, there are clamping and positioning components above the welding platform. There are two groups of clamping and positioning components. The two groups of clamping and positioning components are symmetrically arranged above the welding frame to clamp and fix the multiple groups of trusses on the welding frame.

[0009] Furthermore, a beam supporting assembly is provided above the welding platform, and the beam supporting assembly includes multiple rollers, and a V-shaped groove is provided on the surface of the roller. The V-shaped grooves on the surfaces of the multiple rollers are in the same straight line. The steel bar storage rack can push the steel bar beam into the V-shaped groove on the surface of the roller, and the multiple rollers jointly support the steel bar beam.

[0010] Furthermore, the first grabbing assembly, the second grabbing assembly and the welding assembly are movably arranged on the main frame. The main frame includes a main frame, which is arranged above the welding platform and the steel bar storage rack. Main legs are extended downward on all four sides of the main frame, and the main legs are fixedly connected to the ground, so that the main frame cover is arranged above the welding platform, the turnover rack and the steel bar storage rack.

[0011] Furthermore, a first movable frame and a second movable frame are provided in the main frame, and the first movable frame and the second movable frame can move left and right in the main frame. The first grabbing assembly and the welding assembly are provided on the first movable frame, and the first grabbing assembly and the welding assembly can move forward and backward on the first movable frame. The second grabbing assembly is provided on the second movable frame, and the second grabbing assembly can move forward and backward on the second movable frame.

[0012] Furthermore, the welding assembly includes an upper welding assembly and a lower welding assembly. The upper welding assembly is arranged on the main frame and can move up and down relative to the main frame. The lower welding assembly is arranged on the welding platform and can move up and down relative to the welding platform. The upper welding assembly and the lower welding assembly can simultaneously contact the truss and the steel beam and complete the welding.

[0013] Furthermore, the first grasping assembly includes a clamping claw seat, and a plurality of clamping claw assemblies are distributed on the front and rear sides of the clamping claw seat. The clamping claw slide is connected to the clamping claw slide, and the clamping claw slide is slidably set on the first movable frame. The clamping claw slide can move up and down relative to the clamping claw slide to drive the clamping claw seat and the clamping claw assembly to move up and down.

[0014] Furthermore, the steel bar storage rack includes a base plate, on which a plurality of seat plates are fixedly and vertically inclined, and the plurality of seat plates are arranged in parallel, and a steel bar placing platform is provided on the side edges of the seat plates, and steel bar beams can be placed in the steel bar placing platform; a pushing platform is provided on the top of the seat plate, and a sliding plate is provided on the side of the seat plate for sliding fit, and a lifting platform is provided on the side edge of the sliding plate. When the sliding plate slides from bottom to top, the lifting platform can lift the steel bar beam in the steel bar placing platform into the pushing platform, and a shifting block assembly is provided above the pushing platform, and the shifting block assembly can push the steel bar beam in the pushing platform onto the welding platform.

[0015] A truss assembly production process, including the above-mentioned truss assembly automatic welding equipment, comprises the following steps:

[0016] The first grabbing assembly grabs multiple trusses of the same height stacked on the turnover rack, and then places them on the welding platform and fixes them;

[0017] The rebar storage rack inserts the rebar beams into the upper interior of multiple trusses on the welding platform;

[0018] The welding assembly clamps the steel beams and multiple trusses together and welds them together to form a truss group;

[0019] The second grabbing assembly grabs the truss group that has been welded on the welding platform and places it in the storage area. When the second grabbing assembly moves above the welding platform, the first grabbing assembly moves above the turnover rack to avoid the second grabbing assembly and wait for the next grabbing.

[0020] The automatic welding equipment for trusses of the present invention has an ingenious structural design. It can simultaneously grab multiple trusses on the turnover frame and place them on the welding platform through the grabbing assembly, and automatically provide the steel bar beams 8 used for welding multiple trusses on the welding platform through the steel bar storage rack. In conjunction with the clamping and positioning assemblies, truss support assemblies and beam support assemblies on the welding platform, multiple groups of trusses and steel bar beams 8 are accurately positioned. The trusses and steel bar beams 8 are welded by the welding assembly that pushes down and presses up, and the welding quality is stable and reliable. The welded truss group can be placed on the finished product storage rack for storage through the grabbing assembly, which greatly improves the production efficiency of the truss group.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0023] Figure 1 A perspective view of the truss group automatic welding equipment of the present invention;

[0024] Figure 2 A three-dimensional diagram of the turnover rack of the present invention placed on the turnover seat;

[0025] Figure 3 A perspective view of the turnover rack of the present invention;

[0026] Figure 4 A perspective view of a revolving seat of the present invention;

[0027] Figure 5 A perspective view of the welding platform of the present invention;

[0028] Figure 6 A perspective view of the clamping jaw seat of the present invention;

[0029] Figure 7 for Figure 6 A magnified view of part A;

[0030] Figure 8 Schematic diagram of the connection point of the truss gripped by the gripper;

[0031] Figure 9 This is a schematic diagram of the installation of the trigger assembly of the present invention;

[0032] Figure 10 This is a schematic diagram of the connection between the upper welding assembly, the first grabbing assembly and the movable frame of the present invention;

[0033] Figure 11 is a schematic diagram of the lower welding assembly and the crossbeam supporting assembly of the present invention;

[0034] Figure 12 A perspective view of a steel bar storage rack according to the present invention;

[0035] Figure 13 is a schematic diagram of the sliding plate of the present invention in the initial position;

[0036] Figure 14 for Figure 9 A magnified view of part A;

[0037] Figure 15 for Figure 9 A magnified view of part B;

[0038] Figure 16 A schematic diagram of the sliding plate of the present invention moving from an initial position to a raised position;

[0039] Figure 17 is a schematic diagram of the sliding plate of the present invention in a raised position;

[0040] Figure 18 A schematic diagram of the sliding plate of the present invention moving from a raised position to an initial position;

[0041] Figure 19 A schematic diagram of the sliding plate of the present invention returning to its initial position;

[0042] Figure 20 for Figure 12 Magnified view of part C;

[0043] Figure 21 This is a diagram showing the use status of the steel bar storage rack of the present invention. DETAILED DESCRIPTION

[0044] In order to better understand the purpose, function and specific design of the present invention, the truss group automatic welding equipment of the present invention is further described in detail below with reference to the accompanying drawings.

[0045] like Figure 1-21As shown, the automatic welding equipment for trusses of the present invention includes a welding platform 2, a turnover frame 3 is provided on one side of the welding platform 2, and multiple groups of trusses can be stacked on the turnover frame 3, and a steel bar storage rack 1 is provided on the other side of the welding platform 2, and the steel bar storage rack 1 is used to store the steel bar beams used for the welding truss group; a movable first grabbing assembly 4, a second grabbing assembly 5 and a welding assembly 6 are provided above the welding platform 2, the first grabbing assembly 4 can grab multiple trusses of the same height that can be stacked on the turnover frame 3 at the same time and place them on the welding platform 2, the steel bar storage rack 1 can insert the steel bar beams into the upper interior of the multiple trusses on the welding platform 2, the welding assembly 6 can weld the steel bar beams 8 with multiple trusses to form a truss group, and the second grabbing assembly 5 can grab the welded truss group and place it in the storage area for storage.

[0046] Specifically, if Figure 2-4 As shown, the turnover frame 3 includes a base 31. A plurality of columns 32 are symmetrically spaced at both ends of the base 31 in the longitudinal direction. A storage space is formed between adjacent columns 32. A support base 34 matching the shape of the trusses is provided at the bottom of the storage space. This support base 34 supports the trusses to prevent the lower trusses from being deformed by the gravity of the multiple trusses above. The trusses in this embodiment are triangular-prism-shaped, so the support base 34 is also triangular-prism-shaped. Multiple groups of trusses can be stacked within the storage space, allowing for even distribution of multiple trusses on the same horizontal plane, ready for capture by the first gripping assembly 4 and placement on the welding platform 2 for welding.

[0047] Specifically, if Figure 2 As shown, a truss limiting plate 33 is provided on the column 32, and the width of the truss limiting plate 33 is greater than the width of the column 32, so that the truss contacts the truss limiting plate 33, thereby reducing the contact area between the truss and the turnover frame 3, reducing the friction with the turnover frame 3, and facilitating the removal of the truss.

[0048] In order to facilitate the placement of the truss on the revolving frame 3, a guide portion 331 is provided above the truss limiting plate 33, that is, a straight chamfer is provided above the truss limiting plate 33, and the straight chamfers above two adjacent truss limiting plates 33 form a trumpet-shaped guide portion 331 that is narrow at the bottom and wide at the top, thereby guiding the truss to be placed and facilitating the placement of the truss.

[0049] Preferably, when the trusses stored on the turnover rack 3 are exhausted, in order to facilitate the prompt and rapid addition of trusses, this embodiment adopts a method of replacing the turnover rack 3 as a whole, that is, the empty turnover rack 3 is removed and directly replaced with a turnover rack 3 full of trusses. Therefore, to facilitate the transportation of the turnover rack 3, an insertion portion 37 for a forklift to insert is provided below the turnover rack 3, so that the turnover rack 3 can be transported by a forklift.

[0050] In order to reduce the burden of forklift transportation, the base 31 of this embodiment is a rectangular frame to reduce the weight of the base 31. A reinforcing beam 35 is provided in the middle of the rectangular frame to enhance the strength of the base 31 and prevent the base 31 from deformation.

[0051] Preferably, Figure 4 As shown, in order to facilitate the positioning of the turnover frame 3, the turnover frame 3 is set on a turnover seat 36, and the turnover seat 36 is fixed to the ground so that the first grabbing assembly 4 can accurately grab the truss on the turnover frame 3. A plurality of turnover seat fixing plates 361 are provided at the bottom of the turnover seat 36, and the turnover seat fixing plates 361 are provided with fixing holes, and bolts can be connected in the fixing holes to achieve the fixation of the turnover seat 36. It is worth noting that a positioning baffle 362 is provided on the turnover seat 36, and the positioning baffle 362 extends outward at an angle away from the end of the turnover seat 36. The end of the turnover frame 3 away from the forklift can be placed on the positioning baffle 362 first, and then the end of the turnover frame 3 away from the forklift can slide onto the turnover seat 36 first, and finally the forklift can be withdrawn. Such a setting makes it convenient for the forklift to place the turnover frame 3 on the turnover seat 36 and position the turnover frame 3.

[0052] like Figure 5-7 As shown, the welding platform 2 includes a welding frame 21, and a clamping and positioning assembly 25, a truss support assembly 26 and a beam support assembly 27 are respectively provided above both ends of the welding frame 21. The clamping and positioning assembly 25 can position and clamp multiple groups of trusses placed on the welding frame 21 so that the ends of the multiple groups of trusses are aligned and fixed on the welding frame 21 to wait for welding of the steel beam 8. The truss support assembly 26 can support the truss, and the beam support assembly 27 is used to support the placement of the steel beam 8.

[0053] The welding frame 21 includes a rectangular upper frame 211 and a lower frame 212. The upper frame 211 includes four upper legs at the corners, and the lower frame 212 includes four lower legs at the corners. The upper legs are mounted on the lower legs and can slide relative to the lower legs to adjust the height of the four corners of the upper frame 211 to ensure the horizontality of the upper surface of the upper frame 211. To facilitate the adjustment of the upper frame 211, a lift 213 is provided on the lower frame 212. The movable end of the lift 213 is connected to the upper leg. The height of the upper leg is automatically adjusted by the lift 213. The lift 213 can use an existing worm screw lift 213.

[0054] There are two sets of clamping and positioning assemblies 25, which are symmetrically arranged above the welding frame 21 to clamp and fix the multiple sets of trusses on the welding frame 21. The clamping and positioning assemblies 25 include a positioning cylinder 251, which is connected to a positioning plate 252. The positioning cylinder 251 can drive the positioning plate 252 to move, thereby pushing the multiple sets of trusses to move and aligning the ends of the multiple sets of trusses. In this embodiment, there are two positioning cylinders 251 to increase the thrust and clamping force of the positioning plate 252. The two positioning cylinders 251 are connected to a cylinder base 253, and the two ends of the cylinder base 253 are connected to the positioning plate 252 by bolts and nuts. By adjusting the position of the nut, the angle of the positioning plate 252 is adjusted to ensure that the ends of the multiple sets of trusses are aligned.

[0055] It is worth noting that in order to enable the two sets of clamping and positioning assemblies 25 to position and clamp trusses of different lengths, one set of clamping and positioning assemblies 25 in this embodiment is fixedly mounted above the welding frame 21, and the other set of clamping and positioning assemblies 25 is connected to a movable seat 28. The movable seat 28 can drive the clamping and positioning assemblies 25 to move on the welding frame 21, thereby cooperating with the fixed clamping and positioning assemblies 25 to position and clamp trusses of different lengths. Specifically, a movable seat 28 is provided below the welding platform 2, and the movable clamping and positioning assemblies 25 are connected to a positioning bracket 254. One end of the positioning bracket 254 is connected to the positioning cylinder 251, and the other end is fixedly connected to the movable seat 28 to achieve the connection between the clamping and positioning assemblies 25 and the movable seat 28.

[0056] The truss support assembly 26 includes a support frame 261 that matches the shape of the truss. In this embodiment, the truss and the support frame 261 are both triangular prism-shaped. The support frame 261 is disposed on the welding frame 21 and can support the truss. In order to enable the truss support assembly 26 to support trusses of different lengths, the truss support assembly 26 of this embodiment is divided into two groups. One group of truss support assemblies 26 is fixedly disposed above the welding frame 21, and the other group of truss support assemblies 26 is fixedly connected to a support plate 262. The support plate 262 is slidably disposed on the upper surface of the welding frame 21. The support plate 262 is connected to a movable seat 28 via a support column 263. The movable seat 28 can drive the truss support assembly 26 to move on the welding frame 21, thereby cooperating with the fixed truss support assembly 26 to support trusses of different lengths.

[0057] The beam support assembly 27 includes a plurality of rollers 271, each having a V-shaped groove on its surface. The V-shaped grooves on the surfaces of the plurality of rollers 271 are aligned in a straight line. The rebar storage rack 1 can push the rebar beam 8 into the V-shaped groove on the surface of the rollers 271. The plurality of rollers 271 jointly support the rebar beam 8, waiting for the welding assembly 6 to weld the rebar beam 8 to the plurality of trusses to form a truss group. It is worth noting that, in order to limit the distance that the rebar storage rack 1 can push the rebar beam 8, the beam support assembly 27 includes a limit baffle assembly 272. The limit baffle assembly 272 is disposed on the side of the welding frame 21 away from the rebar storage rack 1 and corresponds to the line connecting the V-shaped grooves on the surfaces of the plurality of rollers 271, so that when the rebar storage rack 1 pushes the rebar beam 8, it can interfere with the limit baffle assembly 272. The limit baffle assembly 272 includes a stop plate, which is connected to a stop cylinder. The stop cylinder can adjust the position of the stop plate to adapt to steel beams 8 of different lengths.

[0058] The roller 271 of this embodiment is connected to the roller seat 273, and the roller seat 273 is connected to the roller bracket 274. The roller bracket 274 is used to fix the roller seat 273. Preferably, in order to prevent the steel bar storage rack 1 from deviating when pushing the steel bar beam 8 into the V-shaped groove of the roller 271, guide blocks 275 are provided on both sides above the roller seat 273.

[0059] In this embodiment, two sets of beam support assemblies 27 are provided to simultaneously weld two steel beams 8. To allow the two sets of beam support assemblies 27 to weld trusses of varying lengths, the roller brackets 274 of one set of beam support assemblies 27 are fixed to a fixed base 29, which is fixedly connected to the lower frame 212 of the welding platform 2, thereby securing the rollers 271 to the upper surface of the welding frame 21. The roller brackets 274 of the other set of beam support assemblies 27 are fixed to a movable base 28, which can move the beam support assemblies 27 on the welding frame 21. This allows them to cooperate with the fixed beam support assemblies 27 to provide steel beams 8 for welding trusses of varying lengths.

[0060] The fixed seat 29 and the movable seat 28 of this embodiment are both arranged below the welding platform 2 and fixedly connected to the lower frame 212 of the welding platform 2. The movable seat 28 includes a movable base plate 281 and a movable mounting plate 282 connected to each other. A slider is provided below the movable base plate 281. A linear guide assembly is fixedly provided below the lower frame 212. The slider below the movable base plate 281 is connected to the linear guide assembly and can slide on the linear guide assembly, thereby realizing the movement of the movable seat 28. Preferably, a movable seat drive assembly is fixedly provided below the lower frame 212 of this embodiment. The movable seat drive assembly can drive the movable seat 28 to slide on the linear guide assembly. The movable seat drive assembly can use an existing screw structure. The movable mounting plate 282 is used to connect the truss support assembly 26 and the beam support assembly 27.

[0061] like Figure 1 and Figure 7 As shown, the first grabbing assembly 4, the second grabbing assembly 5 and the welding assembly 6 are all movably arranged on the main frame 7. The main frame 7 includes a main frame 71. The main frame 71 is arranged above the welding platform 2, the turnover frame 3 and the steel bar storage rack 1. Main legs 72 are provided on all sides of the main frame 71 and extend downward. The main legs 72 are fixedly connected to the ground, so that the main frame 71 is covered above the welding platform 2, the turnover frame 3 and the steel bar storage rack 1. A first mobile frame 73 and a second mobile frame 74 are provided in the main frame 71. The first mobile frame 73 and the second mobile frame 74 can move left and right in the main frame 71. The first grabbing assembly 4 and the welding assembly 6 are provided on the first mobile frame 73. The first grabbing assembly 4 and the welding assembly 6 can move forward and backward on the first mobile frame 73. The second grabbing assembly 5 is provided on the second mobile frame 74. The second grabbing assembly 5 can move forward and backward on the second mobile frame 74.

[0062] Specifically, a rack is fixedly provided on the main frame 71 of this embodiment, and gears are provided on the first movable frame 73 and the second movable frame 74. The gears are connected to the driving motor, and the driving motor drives the gears to rotate, thereby realizing movement on the main frame 71.

[0063] The welding assemblies 6 of this embodiment are divided into two groups, and the welding assemblies 6 include an upper welding assembly 61 and a lower welding assembly 62. The two groups of upper welding assemblies 61 are both arranged on the first movable frame 73 and can move up and down relative to the first movable frame 73. One group of lower welding assemblies 62 is arranged on the fixed seat 29 of the welding platform 2 and can move up and down relative to the welding platform 2. The other group of lower welding assemblies 62 is arranged on the movable seat 28 of the welding platform 2 and can move up and down relative to the welding platform 2. The upper welding assemblies 61 and the lower welding assemblies 62 can simultaneously contact the truss and the steel beam 8 and complete the welding.

[0064] The upper welding assembly 61 includes a plurality of upper electrodes 611, which are fixed on an upper slide 612, and the upper slide 612 is slidably connected to the upper welding frame 613. The upper welding frame 613 is provided with an upper welding drive assembly, which can drive the upper slide 612 to move up and down, thereby driving the upper electrode 611 to move up and down, and the upper welding drive assembly is preferably a cylinder. It is understandable that the upper welding frame 613 opposite to the lower welding assembly 62 connected to the fixed seat 29 is fixedly set on the first mobile frame 73, and the upper welding frame 613 opposite to the lower welding assembly 62 connected to the mobile seat 28 is slidably set on the first mobile frame 73, and the first mobile frame 73 is provided with an upper welding moving assembly, which can drive the upper welding frame 613 to slide on the first mobile frame 73 so that the upper electrode 611 can be aligned with the welding position. The upper welding moving assembly can select a screw structure or a motor linear guide, etc., and the present embodiment adopts an existing worm gear screw lift.

[0065] like Figure 6 As shown, in this embodiment, the two groups of lower welding assemblies 62 fixed on the fixed seat 29 and the movable seat 28 have the same structure. The lower welding assembly 62 fixed on the fixed seat 29 is taken as an example for description. The lower welding assembly 62 includes a resistance transformer 63 and a plurality of lower electrodes 621. The resistance transformer 63 is fixed on the fixed seat 29 and is connected to the plurality of lower electrodes 621. The lower end of the lower electrode 621 is connected to the lower welding drive assembly 622. The lower welding drive assembly 622 is fixed on the fixed seat 29. The lower welding drive assembly 622 can drive the lower electrode 621 to move up and down. The plurality of lower electrodes 621 can lift the steel beam 8 and conflict with the plurality of trusses to be welded. The lower welding drive assembly 622 is preferably a cylinder.

[0066] like Figure 7-9 As shown, the first gripping assembly 4 includes a clamping jaw base 41, with multiple clamping jaw assemblies 42 arranged on both the front and rear sides of the clamping jaw base 41. The clamping jaw base 41 is connected to a clamping jaw slide 43, which is connected to a clamping jaw slide 44. The clamping jaw slide 44 is slidably mounted on a first movable frame 73. The clamping jaw slide 43 can move up and down relative to the clamping jaw slide 44 to drive the clamping jaw base 41 and the clamping jaw assemblies 42 to move up and down. Specifically, a slide fixing plate 45 is provided on the clamping jaw slide 44, and linear guides are provided on both sides of the clamping jaw slide 43. The sliders of the linear guides are connected to the slide fixing plate 45 to achieve a sliding connection between the clamping jaw slide 43 and the clamping jaw slide 44. The clamping jaw slide 43 is also provided with a clamping jaw lifting assembly, which can drive the clamping jaw slide 43 to rise and fall relative to the clamping jaw slide 44. The clamping jaw lifting assembly can adopt an existing worm gear screw lifter or other existing drive device capable of achieving linear reciprocating motion.

[0067] The first movable frame 73 is provided with a clamping jaw moving assembly, which can drive the clamping jaw slide 44 to slide on the first movable frame 73 so that the clamping jaw seat 41 can correspond to the middle position of the grasped truss. The clamping jaw moving assembly can adopt an existing worm gear screw elevator, or other existing drive device capable of achieving linear reciprocating motion. Preferably, in order to improve the stability of the movement of the clamping jaw slide 44, a linear guide is provided on the first movable frame 73, and the clamping jaw slide 44 is fixedly connected to the slider of the linear guide, so that the clamping jaw slide 44 can slide back and forth on the linear guide.

[0068] like Figure 9 As shown, the clamping assembly 42 includes two clamping jaws 421 arranged symmetrically on the left and right. The two clamping jaws 421 are respectively connected to a starting plate 422. The two starting plates 422 are connected to a clamping cylinder 423. The extension and contraction of the clamping cylinder 423 can drive the two clamping jaws 421 to open and close left and right to achieve the grasping of the truss. The clamping jaw cylinder 423 is fixed to a cylinder mounting plate 424. The cylinder mounting plate 424 is provided with an articulated arm 425 extending in the direction of the cylinder extension. The articulated arm 425 is hinged to the middle portion of the starting plate 422. One end of the starting plate 422 is provided with an elongated hole. The starting plate 422 is hinged to the output shaft of the clamping jaw cylinder 423 through the elongated hole. The other end of the starting plate 422 is connected to the clamping jaw 421, thereby achieving the extension and contraction of the clamping jaw cylinder 423 to drive the two clamping jaws 421 to open and close left and right.

[0069] Preferably, Figure 10 As shown, the clamping jaw 421 is hinged to the starting plate 422, and the clamping jaw 421 can swing freely back and forth relative to the starting plate 422, so that when the clamping jaw 421 grabs the truss, even if it grabs the connection point of the truss, it can avoid the connection point and effectively grab the truss.

[0070] like Figure 9 As shown, the cylinder mounting plate 424 is connected to the clamp fixing frame 426, and the clamp fixing frame 426 is fixed on the clamp base 41. The cylinder mounting plate 424 can float freely up and down on the clamp fixing frame 426, so that the clamp 421 and the clamp cylinder 423 as a whole can float freely up and down relative to the clamp base 41, so as to achieve the simultaneous grasping of multiple trusses of different heights.

[0071] In this embodiment, a floating hole 428 is vertically provided on the clamp fixing frame 426, and the cylinder mounting plate 424 is connected to the clamp fixing frame 426 by bolts through the floating hole 428. The bolts can move in the floating hole 428, thereby realizing a floating connection between the cylinder mounting plate 424 and the clamp fixing frame 426.

[0072] It is worth noting that a floating plate 427 is fixedly connected to the articulated arm 425. When the clamp 421 grabs the truss, the lower edge of the floating plate 427 contacts the top of the truss, so that the clamp 421 and the clamp cylinder 423 can float freely up and down relative to the clamp seat 41.

[0073] Preferably, Figure 11 As shown, in order to improve the reliability of the gripping of the truss by the gripping jaws 421, a trigger assembly 46 is also provided on the gripping jaw base 41. The trigger assembly 46 includes a trigger rod 461, which is slidably disposed on the gripping jaw base 41. A travel switch 462 is disposed above the trigger rod 461. The travel switch 462 is spaced apart from the trigger rod 461. After the trigger rod 461 contacts the truss, the truss can lift the trigger rod 461 relative to the gripping jaw base 41 by a certain distance, and then contact the travel switch 462, thereby triggering the gripping jaw cylinder 423 to retract, causing the gripping jaws 421 to close and complete the gripping of the truss. In this embodiment, a linear guide is vertically disposed on the trigger rod 461. The slider of the linear guide is fixedly connected to the gripping jaw base 41 to achieve the connection between the trigger rod 461 and the gripping jaw base 41. A switch bracket 463 is fixed to the gripping jaw base 41, and the travel switch 462 is disposed on the switch bracket 463. Preferably, the switch bracket 463 is provided with an adjustment hole 464, through which the limit switch 462 is fixed to the switch bracket 463, so as to facilitate adjustment of the distance between the limit switch 462 and the trigger rod 461. To improve the reliability of the trigger rod 461, a horizontal rod 465 is connected to the lower end of the trigger rod 461. The horizontal rod 465 can increase the contact area with the truss, thereby making the trigger assembly 46 more reliable.

[0074] like Figure 1 As shown, the second grabbing assembly 5 has the same structure as the first grabbing assembly 4 and will not be described in detail here. However, it is understood that since the second grabbing assembly 5 grabs the welded truss group, only two sets of clamping claw assemblies 42 are required on the second grabbing assembly 5 to reduce equipment costs. Preferably, a finished product placement rack is provided on the side of the rebar storage rack 1 away from the welding platform 2. The second grabbing assembly 5 can grab the welded truss group from the welding platform 2 and place it on the finished product placement rack for storage.

[0075] like Figure 12As shown, the steel bar storage rack 1 includes a base plate 12, on which a plurality of seat plates 13 are fixedly and vertically inclined, and the plurality of seat plates 13 are arranged in parallel. A steel bar placement platform 131 is provided on the side edge of the seat plate 13, and a steel bar beam 8 can be placed in the steel bar placement platform 131; a pushing platform 132 is provided on the top of the seat plate 13, and a sliding plate 14 is provided on the side of the seat plate 13 for sliding fit, and a lifting platform 141 is provided on the side edge of the sliding plate 14. When the sliding plate 14 slides from bottom to top, the lifting platform 141 can lift the steel bar beam 8 in the steel bar placement platform 131 into the pushing platform 132, and a shifting block assembly 161 is provided above the pushing platform 132, and the shifting block assembly 161 can push the steel bar beam 8 in the pushing platform 132 to the position to be welded. Preferably, a pushing baffle 162 matching the shape of the pushing platform 132 is fixedly connected to the seat plate 13, and the pushing baffle 162 and the pushing platform 132 form a pushing groove, thereby increasing the contact area of ​​the steel beam 8 to be pushed and preventing the steel beam 8 from falling.

[0076] Specifically, if Figure 13-20 As shown, the sliding plate 14 includes an initial position and a lifting position. The sliding plate 14 can move repeatedly between the initial position and the lifting position to lift the steel bar beams 8 in the steel bar placement platform 131 into the pushing platform 132 one by one. The steel bar placement platform 131 of this embodiment includes a connected placement surface 1311 and a stop surface 1312, the lifting platform 141 includes a connected bearing surface 1411 and a limiting surface 1412, and the pushing platform 132 includes a connected rolling surface 1321 and a stop surface 1323; when the sliding plate 14 is in the initial position, the bearing surface 1411 is parallel to the placement surface 1311 and is located below the placement surface 1311, and the limiting surface 1412 is parallel to the stop surface 1312 and is located in front of the stop surface 1312. When the sliding plate 14 moves from the initial position to the lifting position, the bearing surface 1411 lifts the steel bar beam 8 in the steel bar placement platform 131 and moves it upward; it is worth noting that the distance between the limiting surface 1412 and the stop surface 1312 is greater than the radius of the steel bar beam 8 and less than 1.5 times the radius of the steel bar beam 8, so that the lifting platform 141 only lifts one steel bar beam 8 at a time. When the sliding plate 14 is in the lifting position, the bearing surface 1411 is parallel to the rolling surface 1321 and is located above the rolling surface 1321. When the sliding plate 14 moves from the lifting position to the initial position, that is, when the sliding plate 14 moves downward, the steel beam 8 on the bearing surface 1411 falls onto the stop surface 1323 and rolls toward the rolling surface 1321 until it conflicts with the rolling surface 1321, thereby completing the lifting of the steel beam 8.

[0077] Preferably, the number of the steel bar placement platforms 131 of this embodiment is multiple, evenly distributed on the side edges of the seat plate 13, and a steel bar storage groove 133 is provided at the position below the side edges of the seat plate 13. The steel bar storage groove 133 can store multiple steel bar beams 8, and a plurality of lifting platforms 141 are provided on the sliding plate 14. The lifting platforms 141 correspond one to one with the steel bar placement platforms 131 and the steel bar storage grooves 133. When the sliding plate 14 moves repeatedly between the initial position and the lifting position, the steel bar beams 8 in the steel bar storage grooves 133 can be lifted one by one to the upper steel bar placement platform 131, and the steel bar beams 8 in each steel bar placement platform 131 are lifted step by step, and the steel bar beams 8 in the topmost steel bar placement platform 131 are lifted to the top pushing platform 132. By providing multiple steel bar placement platforms 131, the distance that the sliding plate 14 repeatedly moves can be reduced, and the reliability of lifting the steel bar beams 8 can be improved, and the probability of the steel bar beams 8 falling during the lifting process can be reduced.

[0078] The steel bar storage groove 133 is V-shaped, and the steel bar storage groove 133 includes a first storage surface 1331, a bottom surface 1332 and a second storage surface that are connected. When the sliding plate 14 is in the initial position, the bearing surface 1411 of the lowest lifting platform 141 is parallel to the bottom surface 1332 and is located below the bottom surface 1332. The limiting surface 1412 is parallel to the first storage surface 1331 and is located in front of the first storage surface 1331. Preferably, the length of the bottom surface 1332 is equal to the diameter of the steel bar beam 8, so that only one steel bar beam 8 can be accommodated on the bottom surface 1332. The distance between the limiting surface 1412 and the first storage surface 1331 is greater than the radius of the steel bar beam 8 and less than 1.5 times the radius of the steel bar beam 8, so that the lifting platform 141 only lifts one steel bar beam 8 at a time. It is worth noting that when the sliding plate 14 is in the initial position, the limiting surface 1412 of the lifting platform 141 adjacent to the lowest lifting platform 141 is parallel to the first storage surface 1331 and is located behind the first storage surface 1331 to avoid affecting the lifting of the steel beam 8.

[0079] When the sliding plate 14 is in the lifting position, the bearing surface 1411 of the lowest lifting platform 141 is parallel to the placement surface 1311 of the lowest steel bar placement platform 131, and is located above the placement surface 1311. When the sliding plate 14 moves from the lifting position to the initial position, that is, when the sliding plate 14 moves downward, the steel bar beam 8 on the bearing surface 1411 falls onto the placement surface 1311 and rolls toward the stop surface 1312 until it conflicts with the stop surface 1312, thereby completing the lifting of the steel bar beam 8.

[0080] It is worth noting that when the sliding plate 14 moves downward, since the limiting surface 1412 of the lowest lifting platform 141 is parallel to the first storage surface 1331 and is located in front of the first storage surface 1331, only when the sliding plate 14 returns to its initial position can the steel bar beam 8 in the steel bar storage groove 133 roll onto the bottom plate 12. Similarly, since the stop surface 1312 of each level of the steel bar placement platform 131 is parallel to the limiting surface 1412 of the corresponding lifting platform 141 of the same level, and the limiting surface 1412 is located in front of the stop surface 1312, only when the sliding plate 14 returns to its initial position can the steel bar beam 8 on the placement surface 1311 of the steel bar placement platform 131 roll to a position where it conflicts with the stop surface 1312.

[0081] All sliding plates 14 of this embodiment are connected to a drive assembly 17, which can drive the sliding plates 14 to move up and down repeatedly. The drive assembly 17 includes a lifting cylinder 171, which is fixed to the base plate 12 or the seat plate 13. The lifting cylinder 171 is connected to a lifting rod 172, which is fixedly connected to each sliding plate 14. The sliding plates 14 can move repeatedly between the initial position and the raised position through the extension and retraction of the lifting cylinder 171. Preferably, the sliding plates 14 are provided with a travel limit slot 142, and the seat plate 13 is provided with a travel limit post 134, which is inserted into the travel limit slot 142. When the sliding plate 14 is in its initial position, the travel-limiting post 134 is located below the travel-limiting slot 142. When the sliding plate 14 is in its raised position, the travel-limiting post 134 is located above the travel-limiting slot 142. The provision of the travel-limiting slot 142 improves the positional accuracy of the sliding plate 14 during repeated movement, thereby improving the accuracy and reliability of holding the steel beam 8. It is worth noting that, to reduce the resistance of the travel-limiting post 134 during movement within the travel-limiting slot 142, a bearing is provided on the outside of the travel-limiting post 134.

[0082] A push frame 18 is disposed above the base plate 13. A push assembly 181 is disposed on the push frame 18. The push assembly 181 is connected to the shift block assembly 161 and can drive the shift block assembly 161 to move back and forth, thereby pushing the steel beam 8 within the push platform 132 to the welding position. In this embodiment, the push assembly 181 includes a push cylinder, which is connected to the shift block assembly 161 and drives the shift block assembly 161 to reciprocate. The push cylinder can be a rodless cylinder.

[0083] like Figure 15As shown, the shift block assembly 161 includes a shift block bracket 1611 and a shift plate 1612. The shift block bracket 1611 is connected to the pushing cylinder. The end of the shift block bracket 1611 away from the pushing cylinder extends toward the pushing platform 132. The shift plate 1612 is fixedly arranged at the end of the shift block bracket 1611 away from the pushing cylinder and is perpendicular to the moving direction of the shift block bracket 1611. The area of ​​the shift plate 1612 is larger than the cross-sectional area of ​​the steel beam 8 to improve the reliability of pushing the steel beam 8.

[0084] like Figure 12 As shown, the steel bar storage rack 1 of this embodiment also includes side baffles 19. The side baffles 19 are two pieces and are symmetrically arranged on both sides of the seat plate 13 near the edge of the bottom plate 12. The side baffles 19 can prevent the steel bar beams 8 from falling off the seat plate 13 or the sliding plate 14. Preferably, the portion of the side baffles 19 corresponding to the steel bar storage slot 133 is a trapezoid that is narrow at the bottom and wide at the top, so as to limit the steel bars in the steel bar storage slot 133 and prevent the steel bar beams 8 in the steel bar storage slot 133 from falling out when the steel bar storage slot 133 is lifted and flipped. The position of the side baffles 19 corresponding to the steel bar placement platform 131 is the same shape as the steel bar placement platform 131, and the side edges of the side baffles 19 are arranged in front of the side edges of the seat plate 13. While playing a limiting role, it also reduces the area and weight of the side baffles 19.

[0085] In this embodiment, the seat panels 13 consist of three pieces, evenly spaced apart on the base panel 12. Correspondingly, the sliding panels 14 also consist of three pieces, slidably positioned to the sides of the seat panels 13. The drive assembly 17 is positioned in the middle of the seat panels 13. Preferably, to reduce the overall weight of the device, the seat panels 13 are provided with hollow holes.

[0086] In order to cooperate with the two sets of beam support assemblies 27 on the welding platform 2, there are two steel bar storage racks 1 in this embodiment. The two steel bar storage racks 1 are respectively connected to the fixed platform 111 and the movable platform 112. The steel bar storage rack 1 set on the movable platform 112 can be moved relative to the movable platform 112 so that the two steel bar storage racks 1 can be aligned with the two beam support assemblies 27 respectively.

[0087] The present invention also discloses a truss assembly production process, including the above-mentioned truss assembly automatic welding equipment, comprising the following steps:

[0088] The first grabbing assembly grabs multiple trusses of the same height stacked on the turnover rack, and then places them on the welding platform and fixes them;

[0089] The rebar storage rack inserts the rebar beams into the upper interior of multiple trusses on the welding platform;

[0090] The welding assembly clamps the steel beams and multiple trusses together and welds them together to form a truss group;

[0091] The second grabbing assembly grabs the truss group that has been welded on the welding platform and places it in the storage area. When the second grabbing assembly moves above the welding platform, the first grabbing assembly moves above the turnover rack to avoid the second grabbing assembly and wait for the next grabbing of multiple trusses of the same height stacked on the turnover rack.

[0092] The automatic welding equipment for trusses of the present invention has an ingenious structural design. It can simultaneously grab multiple trusses on the turnover frame and place them on the welding platform through the grabbing assembly, and automatically provide the steel beams used for welding multiple trusses on the welding platform through the steel bar storage rack. In conjunction with the clamping and positioning assemblies, truss support assemblies and beam support assemblies on the welding platform, multiple groups of trusses and steel bar beams can be accurately positioned. The trusses and steel bar beams are welded by the welding assembly that pushes down and presses up, and the welding quality is stable and reliable. The welded truss group can be placed on the finished product storage rack for storage through the grabbing assembly, which greatly improves the production efficiency of the truss group.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A truss group automatic welding equipment, characterized in that: It includes a welding platform, a turnover frame is arranged on one side of the welding platform, and multiple groups of trusses can be stacked on the turnover frame, and a steel bar storage rack is arranged on the other side of the welding platform, and the steel bar storage rack is used to store the steel bar beams used for the welding truss group; a movable first grabbing assembly, a second grabbing assembly and a welding assembly are arranged above the welding platform, the first grabbing assembly can grab multiple trusses of the same height stacked on the turnover frame at the same time and place them on the welding platform, the steel bar storage rack can insert the steel bar beams into the interior of the multiple trusses on the welding platform, the welding assembly can weld the steel bar beams and multiple trusses together to form a truss group, and the second grabbing assembly can grab the welded truss group and place it in the storage area for storage.

2. The truss group automatic welding equipment according to claim 1, characterized in that: The turnover frame includes a base, and a plurality of columns are symmetrically arranged at both ends in the length direction above the base, and a placement space is formed between two adjacent columns. A support frame matching the shape of the truss is arranged at the bottom of the placement space, and the support frame can support the truss. Multiple groups of trusses can be stacked in the placement space respectively, so that multiple trusses can be evenly distributed on the same horizontal plane, waiting to be grasped by the first grasping component.

3. The truss group automatic welding equipment according to claim 1, characterized in that: There are two groups of clamping and positioning components above the welding platform. The two groups of clamping and positioning components are symmetrically arranged above the welding frame to clamp and fix multiple groups of trusses on the welding frame.

4. The truss group automatic welding equipment according to claim 1, characterized in that: A beam supporting assembly is arranged above the welding platform. The beam supporting assembly includes multiple rollers. V-shaped grooves are arranged on the surfaces of the rollers. The V-shaped grooves on the surfaces of the multiple rollers are in the same straight line. The steel bar storage rack can push the steel bar beam into the V-shaped groove on the surface of the roller. The multiple rollers jointly support the steel bar beam.

5. The truss group automatic welding equipment according to claim 1, characterized in that: The first grabbing assembly, the second grabbing assembly and the welding assembly are movably arranged on the main frame, and the main frame includes a main frame, which is arranged above the welding platform and the steel bar storage rack. Main legs are extended downwardly around the main frame, and the main legs are fixedly connected to the ground, so that the main frame cover is arranged above the welding platform, the turnover rack and the steel bar storage rack.

6. The truss group automatic welding equipment according to claim 5, characterized in that: A first mobile frame and a second mobile frame are arranged in the main frame, and the first mobile frame and the second mobile frame can move left and right in the main frame. The first grabbing assembly and the welding assembly are arranged on the first mobile frame, and the first grabbing assembly and the welding assembly can move forward and backward on the first mobile frame. The second grabbing assembly is arranged on the second mobile frame, and the second grabbing assembly can move forward and backward on the second mobile frame.

7. The truss group automatic welding equipment according to claim 5, characterized in that: The welding assembly includes an upper welding assembly and a lower welding assembly. The upper welding assembly is arranged on the main frame and can move up and down relative to the main frame. The lower welding assembly is arranged on the welding platform and can move up and down relative to the welding platform. The upper welding assembly and the lower welding assembly can contact the truss and the steel beam at the same time and complete the welding.

8. The truss group automatic welding equipment according to claim 6, characterized in that: The first grabbing assembly includes a clamping claw seat, and a plurality of clamping claw assemblies are evenly distributed on the front and rear sides of the clamping claw seat. The clamping claw slide is connected to the clamping claw slide, and the clamping claw slide is slidably arranged on the first movable frame. The clamping claw slide can move up and down relative to the clamping claw slide to drive the clamping claw seat and the clamping claw assembly to move up and down.

9. The truss group automatic welding equipment according to claim 1, characterized in that: The steel bar storage rack includes a bottom plate, on which a plurality of seat plates are fixedly arranged vertically and inclined, and the plurality of seat plates are arranged in parallel, and a steel bar placing platform is arranged on the side edges of the seat plates, and a steel bar beam can be placed in the steel bar placing platform; a pushing platform is arranged on the top of the seat plate, and a sliding plate is slidingly arranged on the side of the seat plate, and a lifting platform is arranged on the side edge of the sliding plate, and when the sliding plate slides from bottom to top, the lifting platform can lift the steel bar beam in the steel bar placing platform into the pushing platform, and a shifting block assembly is arranged above the pushing platform, and the shifting block assembly can push the steel bar beam in the pushing platform onto the welding platform.

10. A truss assembly production process, characterized in that: The automatic welding equipment for trusses according to any one of claims 1 to 9 comprises the following steps: The first grabbing assembly grabs a plurality of trusses of the same height stacked on the turnover frame, and then places them on the welding platform and fixes them; The rebar storage rack inserts the rebar beams into the upper interior of multiple trusses on the welding platform; The welding assembly clamps and welds the steel beams to a plurality of trusses to form a truss group; The second grabbing assembly grabs the truss group that has been welded on the welding platform and places it in the storage area for storage. When the second grabbing assembly moves above the welding platform, the first grabbing assembly moves above the turnover rack to avoid the second grabbing assembly and wait for the next grabbing.

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