Steel bar floor support plate welding machine

Abstract

The utility model belongs to the technical field of reinforcing steel bar floor support plate machining, and discloses a reinforcing steel bar floor support plate welding machine which comprises a reinforcing steel bar truss and a bottom plate. The steel bar floor support plate welding machine comprises a rack, a positioning device, a feeding device and a welding device, wherein the positioning device is used for positioning a steel bar truss and a bottom plate; the feeding device is used for carrying out synchronous stepping conveying on the positioned steel bar trusses and the positioned bottom plates; the welding device comprises a fixed welding assembly and a movable welding assembly, and the movable welding assembly is arranged on the feeding device and used for welding the steel bar truss and the bottom plate in the stepping process; and the fixed welding assembly is fixedly arranged on the rack and is used for welding the steel bar truss and the bottom plate which are stepped to the fixed welding position. Alternate welding of the fixed welding assembly and the movable welding assembly is achieved, impact on a power grid in the welding process is reduced, and working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of steel reinforcement floor decking processing technology, and in particular to a steel reinforcement floor decking welding machine. Background Technology

[0002] Reinforced concrete floor decking, also known as steel truss floor decking, typically consists of steel trusses and galvanized sheets, which are welded together at multiple weld points to form the reinforced concrete floor decking.

[0003] When welding steel trusses to galvanized sheets, multiple steel trusses need to be welded to a single galvanized sheet. To improve efficiency, multiple trusses are typically welded simultaneously. Traditional bridge-loop welding equipment requires a transformer for every two welding points; welding three steel trusses to a galvanized sheet necessitates three transformers. This results in high welding costs, significant impact on the power grid during welding, and low work efficiency due to manual step-by-step movement after each group of welds is completed. Utility Model Content

[0004] The purpose of this utility model is to provide a steel reinforcement floor deck welding machine to solve the problems of high cost, large impact on the power grid during welding, and low work efficiency of existing welding machines.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A reinforced concrete floor deck welding machine, wherein the reinforced concrete floor deck includes a steel truss and a base slab; the reinforced concrete floor deck welding machine includes:

[0007] A frame, wherein a fixed welding position is provided on the frame;

[0008] A positioning device is provided on the frame and is used to position the steel truss and the base plate.

[0009] A feeding device is slidably mounted on the frame. The feeding device is used to synchronously and stepwise transport the positioned steel truss and the base plate. The transport direction is the length direction of the steel floor slab.

[0010] A welding device, comprising a fixed welding assembly and a movable welding assembly, wherein the movable welding assembly is mounted on a feeding device and welds the steel truss and the base plate during the stepping process; and the fixed welding assembly is fixedly mounted on the frame and welds the steel truss and the base plate when the truss has stepped to the fixed welding position.

[0011] In some embodiments, the positioning device includes:

[0012] The base plate positioning mechanism includes two base plate positioning mechanisms, which are respectively located at both ends of the fixed welding position along the conveying direction. The base plate positioning mechanism can support the base plate and abut against both sides of the base plate along the conveying direction to limit its position.

[0013] A steel truss positioning mechanism is located above the base plate positioning mechanism. The steel truss positioning mechanism includes a positioning block and a first lifting drive component. The positioning block is located at the output end of the first lifting drive component. The first lifting drive component is configured to drive the positioning block to move up and down, so that the positioning block can position the steel truss and press it onto the base plate.

[0014] In some embodiments, the positioning device further includes an end positioning mechanism, which includes a first baffle and a second lifting drive member, the second lifting drive member being configured to drive the first baffle to move up and down to position the end face of the steel truss and / or the end face of the base plate.

[0015] In some embodiments, a second baffle is detachably mounted on the first baffle, and the first baffle and the second baffle abut against the end face of the steel truss and the end face of the base plate, respectively.

[0016] In some embodiments, the base plate positioning mechanism includes:

[0017] A roller seat, on which multiple conveying rollers are rotatably mounted to provide rolling support for the base plate;

[0018] The positioning components are provided in multiples, and each of the multiple positioning components is adjustablely disposed on the roller seat. Any two positioning components disposed opposite each other on both sides along the conveying direction can abut against both sides of the base plate to limit the position.

[0019] In some embodiments, the positioning blocks are provided corresponding to the steel truss, and each positioning block is provided with a V-shaped groove, which is adapted to the connection position of the top reinforcement and web reinforcement of the steel truss.

[0020] In some embodiments, the feeding device includes:

[0021] The first step-forward mechanism includes a first slide plate and a first clamping mechanism. The first slide plate is slidably mounted on the frame and located upstream of the fixed welding position. The first clamping mechanism is provided on the first slide plate and is used to clamp and fix the steel truss and the base plate. The first slide plate can drive the steel truss and the base plate to move stepwise along the conveying direction. The movable welding assembly is provided on the first slide plate.

[0022] The second stepping mechanism includes a second slide plate and a second clamping mechanism. The second slide plate is slidably mounted on the frame and located downstream of the fixed welding position. The second clamping mechanism is provided on the second slide plate and is used to clamp and fix the steel truss and the base plate. The second slide plate can drive the steel truss and the base plate to step along the conveying direction.

[0023] In some embodiments, both the first clamping mechanism and the second clamping mechanism include:

[0024] A clamping and fixing seat is provided on the first sliding plate or the second sliding plate, and a guide shaft is provided on the clamping and fixing seat;

[0025] The third lifting drive component is located at the top of the guide shaft, and the output end of the third lifting drive component is vertically downward.

[0026] An upper pressing plate is provided at the output end of the third lifting drive component, and a pressing block is provided on the lower surface of the upper pressing plate;

[0027] A lower pressing plate is disposed on the first sliding plate or the second sliding plate, and the lower pressing plate is positioned directly opposite the pressing block. The third lifting drive unit drives the pressing block to descend and presses the steel truss and the bottom plate onto the lower pressing plate.

[0028] In some embodiments, the welding apparatus further includes a first transformer and a second transformer, the fixed welding assembly includes four sets of upper electrode mechanisms and two sets of lower electrode mechanisms corresponding to them, the movable welding assembly includes two sets of the upper electrode mechanisms and one set of lower electrode mechanisms corresponding to them, wherein the two sets of upper electrode mechanisms of the fixed welding assembly and the two sets of upper electrode mechanisms of the movable welding assembly are simultaneously connected to the two poles of the first transformer, and the other two sets of upper electrode mechanisms of the fixed welding assembly are connected to the two poles of the second transformer.

[0029] In some embodiments, the upper electrode mechanism includes:

[0030] The upper fixed seat of the fixed welding assembly is disposed on the frame, and the upper fixed seat of the movable welding assembly is disposed on the first slide plate or the second slide plate;

[0031] The fourth lifting drive component is disposed on the upper fixed base, and the output end of the fourth lifting drive component slides vertically downward through the upper fixed base;

[0032] A guide post is provided, the top end of which is connected to the output end of the fourth lifting drive component. A connecting seat is provided at the bottom end of the guide post, an upper electrode seat is provided on the connecting seat, and an electrode strip is provided on the upper electrode seat. The connecting seat is electrically connected to the first transformer or the second transformer.

[0033] In some embodiments, the lower electrode mechanism includes:

[0034] A lower electrode holder, wherein the lower electrode holder is provided with a groove;

[0035] Electrode blocks are provided at the top of both sides of the groove wall, and two electrode blocks are respectively provided for two electrode strips;

[0036] An insulating plate is disposed at the bottom end of the lower electrode holder, and the lower electrode holder is fixedly connected to the frame or to the first slide plate via the insulating plate.

[0037] The beneficial effects of this utility model are:

[0038] The steel reinforcement floor decking welding machine provided by this utility model, by setting up a positioning device and a feeding device, realizes the positioning and step-by-step conveying of the steel reinforcement truss and the base plate, which facilitates automatic step-by-step welding of the steel reinforcement truss and the base plate, and improves the automation level and work efficiency of welding. By setting the welding device into two parts, a fixed welding component and a moving welding component, the fixed welding component can weld the steel reinforcement truss and the base plate after stepping into place, and the moving welding component can weld the steel reinforcement truss and the base plate during the stepping process, realizing alternating welding. For steel reinforcement floor decking of the same specifications, the alternating welding method reduces the impact on the power grid during the welding process and greatly improves work efficiency. Attached Figure Description

[0039] Figure 1 This is a first-view structural schematic diagram of the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0040] Figure 2 This is a second-view structural schematic diagram of the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0041] Figure 3 This is a schematic diagram of the steel truss positioning mechanism in the steel floor deck welding machine provided in this embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of the front bottom plate positioning mechanism in the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0043] Figure 5 This is a schematic diagram of the rear bottom plate positioning mechanism in the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0044] Figure 6 This is a schematic diagram of the mid-end positioning mechanism of the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0045] Figure 7 This is a schematic diagram of the first step mechanism in the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0046] Figure 8 This is a schematic diagram of the structure of the steel reinforcement floor deck welding machine provided in this embodiment, showing the moving welding assembly mounted on the first step mechanism.

[0047] Figure 9 This is a schematic diagram of the second stepping mechanism in the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0048] Figure 10 This is a schematic diagram of the first clamping mechanism in the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0049] Figure 11 This is a schematic diagram of the upper electrode mechanism in the steel reinforcement floor deck welding machine provided in this embodiment of the utility model;

[0050] Figure 12 This is a schematic diagram of the lower electrode mechanism in the steel floor deck welding machine provided in this embodiment of the utility model;

[0051] Figure 13 This is a structural schematic diagram of the reinforced concrete floor decking involved in an embodiment of this utility model.

[0052] In the picture:

[0053] 100. Steel truss; 101. Footing; 200. Base plate;

[0054] 1. Rack;

[0055] 2. Positioning device; 21. Steel truss positioning mechanism; 211. Material pressing bracket; 212. Material pressing connecting plate; 213. First lifting drive component; 214. Positioning block; 2141. V-groove; 215. Fifth lifting drive component; 2151. Handwheel; 2152. Screw; 22. Base plate positioning mechanism; 221. Roller seat; 222. Positioning component; 2221. Adjusting seat; 2222. Adjusting shaft; 2223. Positioning bearing; 2224. Positioning shaft; 223. Conveying roller; 23. End positioning mechanism; 231. Baffle positioning bracket; 232. Second lifting drive component; 233. First baffle; 234. Second baffle;

[0056] 3. Feeding device; 31. First stepping mechanism; 311. First slide plate; 3111. First slider; 3112. First slide rail; 312. First clamping mechanism; 3121. Clamping fixing seat; 3122. Third lifting drive component; 3123. Upper pressure plate; 3124. Lower pressure plate; 3125. Guide shaft; 3126. Pressure block; 3127. Cylinder connecting plate; 313. First stepping drive component; 314. Motor bracket; 315. Coupling; 316. Ball screw; 3161. Screw support seat; 3162. Stepper screw female seat; 317. Second slide rail; 318. Second slider; 319. First support roller; 32. Second stepping mechanism; 321. Second slide plate; 3211. Third slider; 3212. Third slide rail; 322. Second clamping mechanism; 323. Second stepping drive component; 324. First cylinder seat; 325. Fisheye bearing; 326. Connecting shaft; 327. Second support roller;

[0057] 4. Welding device; 41. Fixed welding assembly; 42. Moving welding assembly; 421. Upper electrode mechanism; 4211. Upper fixed seat; 4212. Fourth lifting drive component; 4213. Guide column; 4214. Connecting seat; 4215. Upper electrode seat; 4216. Electrode strip; 4217. Second cylinder seat; 422. Lower electrode mechanism; 4221. Lower electrode seat; 4222. Electrode block; 4223. Insulating plate; 43. First transformer; 44. Second transformer; 45. Welding bracket; 451. Support column; 452. Support beam; 453. Corner support; 454. Dovetail frame. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0059] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0062] This utility model embodiment provides a rebar floor deck welding machine, such as Figure 13 This system is used to weld multiple steel trusses 100 onto a base plate 200 to form a reinforced concrete floor deck. The base plate 200 is typically made of galvanized sheet. The bases 101 of the steel trusses 100 are in close contact with the surface of the base plate 200, and the contact portions between the bases 101 and the base plate 200 are welded and fixed. Specifically, three steel trusses 100 are welded side-by-side along the width direction (Y-direction) of the reinforced concrete floor deck. Each steel truss 100 has multiple bases 101 along the length direction (X-direction) of the base plate 200, which need to be welded sequentially. In existing technology, synchronous welding of the bases 101 of three steel trusses 100 at the same cross-section requires three transformers to operate simultaneously, resulting in significant impact on the power grid. Furthermore, the irregular structure of the base plate 200 and the steel trusses 100 makes positioning and automatic displacement difficult, requiring manual assistance, leading to low work efficiency and high labor intensity.

[0063] To solve the above-mentioned technical problems, this utility model provides a steel reinforcement floor deck welding machine, such as... Figures 1-12The reinforced concrete floor decking welding machine includes a frame 1, a positioning device 2, a feeding device 3, and a welding device 4. The positioning device 2 is mounted on the frame 1 and is used to position the reinforcing steel truss 100 and the base plate 200. This positioning includes initial end positioning of the reinforcing steel truss 100 and the base plate 200, as well as lateral guiding positioning during the welding process. The feeding device 3 is slidably mounted on the frame 1 and is used to synchronously feed the positioned reinforcing steel truss 100 and the base plate 200 in a step-by-step manner along the length of the reinforced concrete floor decking. The welding device 4 includes a fixed welding assembly 41 and a movable welding assembly 42. The movable welding assembly 42 is mounted on the feeding device 3 and welds the reinforcing steel truss 100 and the base plate 200 during the step-by-step process. The fixed welding assembly 41 is fixedly mounted on the frame 1 and welds the reinforcing steel truss 100 and the base plate 200 after they have stepped to the fixed welding position.

[0064] It should be noted that the fixed welding assembly 41 and the movable welding assembly 42 are installed in different positions and are started alternately during operation, but their specific structures can be the same. The steel reinforcement floor deck welding machine provided by this utility model, by setting a positioning device 2 and a feeding device 3, realizes the initial positioning, welding positioning and step-by-step conveying of the steel truss 100 and the base plate 200, which facilitates automatic step-by-step welding of the steel truss 100 and the base plate 200, improves the automation level and work efficiency of welding, and helps to reduce labor intensity. By setting the welding device 4 into two parts, a fixed welding component 41 and a moving welding component 42, the fixed welding component 41 can weld the steel truss 100 and the base plate 200 when they have stepped into place (the base 101 to be welded is located in the fixed welding position), and the moving welding component 42 can move synchronously with the feeding device 3 and weld the steel truss 100 and the base plate 200 during the step-by-step process. The fixed welding component 41 and the moving welding component 42 weld alternately. For steel reinforcement floor decks of the same specifications, the alternating welding method reduces the impact on the power grid during the welding process and greatly improves work efficiency.

[0065] In some embodiments, the positioning device 2 includes a base plate positioning mechanism 22 and a steel truss positioning mechanism 21. Two base plate positioning mechanisms 22 are provided, and the two base plate positioning mechanisms 22 are respectively located at both ends of the fixed welding position along the conveying direction (X direction). The base plate positioning mechanism 22 can support the base plate 200 and abut against both sides of the base plate 200 along the conveying direction to limit the position. The steel truss positioning mechanism 21 is located above the base plate positioning mechanism 22. The steel truss positioning mechanism 21 includes a positioning block 214 and a first lifting drive member 213. The positioning block 214 is located at the output end of the first lifting drive member 213. The first lifting drive member 213 is configured to drive the positioning block 214 to move up and down, so that the positioning block 214 can position the steel truss 100 and press it onto the base plate 200.

[0066] like Figure 3The diagram shows the structure of the steel truss positioning mechanism 21. The first lifting drive component 213 is a linear drive component, such as a cylinder. The number of the first lifting drive components 213 and the number of positioning blocks 214 are matched with the number of steel trusses 100 to facilitate simultaneous positioning of each steel truss 100. In this embodiment, three first lifting drive components 213 are spaced apart on the pressure connecting plate 212 and correspond one-to-one with the standard positions of the three steel trusses 100. The two ends of the pressure connecting plate 212 are respectively fixed to two pressure supports 211. The two pressure supports 211 are symmetrically arranged on both sides of the fixed welding position, and the bottom end of the pressure supports 211 is fixed to the frame 1. The output end of the first lifting drive component 213 points downward and connects to the positioning block 214. Preferably, the positioning block 214 is correspondingly arranged to the steel truss 100. Each positioning block 214 is provided with a V-groove 2141, which is adapted to the connection position of the top reinforcement and web reinforcement of the steel truss 100. After the base plate 200 is positioned by the base plate positioning mechanism 22, the position of the steel truss 100 above the base plate 200 may deviate slightly from the required standard position. At this time, by moving the positioning block 214 downwards, the V-groove 2141 gradually contacts the connection point (highest position) of the top and web reinforcement of the steel truss 100. Through the V-groove 2141, the position of the steel truss 100 can be aligned, achieving the purpose of positioning the steel truss 100. Pressing the positioning block 214 onto the steel truss 100 during welding can also prevent the steel truss 100 from warping during welding, thereby improving welding quality. Furthermore, the steel truss positioning mechanism 21 also includes a fifth lifting drive component 215. In this embodiment, the fifth lifting drive component 215 is a manual drive component; however, pneumatic or electric drive mechanisms such as cylinders can also be used. Figure 3 When the fifth lifting drive component 215 is a manual drive component, the fifth lifting drive component 215 includes a handwheel 2151 and a lead screw 2152. The handwheel 2151 is fixed to the top of the lead screw 2152, and the bottom of the lead screw 2152 transmits the pressure support 211 and is threadedly connected to the pressure connecting plate 212. At this time, the pressure connecting plate 212 and the pressure support 211 are slidably connected through the guide rail slider. The handwheel 2151 drives the lead screw 2152 to rotate, and the pressure connecting plate 212 moves up and down along the pressure support 211, thereby increasing the height adjustment range of the positioning block 214 and making it more widely applicable.

[0067] like Figure 1 and Figure 2 As shown, the two ends of the fixed welding position on the frame 1 are along the X-direction, which is the length direction of the base plate 200. Two base plate positioning mechanisms 22 are used to double-limit the base plate 200 at both ends of the fixed welding position, ensuring the stability of the base plate 200 during stepping movement and welding. The two base plate positioning mechanisms 22 are a front base plate positioning mechanism and a rear base plate positioning mechanism, and they can adopt the same structure, such as... Figure 4and Figure 5 As shown, the front base plate positioning mechanism is used to position the base plate 200 before welding so that the base plate 200 is in a suitable position; the rear base plate positioning mechanism is installed at the rear end of the frame 1, located downstream of the base plate 200 in the stepping forward direction, and is used to support and position the welded steel truss 100 and the base plate 200.

[0068] Taking the front base plate positioning mechanism as an example, the front base plate positioning mechanism includes a roller seat 221 and positioning elements 222. The roller seat 221 is mounted on the frame 1, and multiple conveying rollers 223 are rotatably mounted on the roller seat 221 to roll and support the base plate 200. The conveying rollers 223 can reduce the frictional resistance during the conveying process of the base plate 200. Multiple positioning elements 222 are provided, and each positioning element 222 is adjustablely positioned on the roller seat 221. Any two positioning elements 222 arranged opposite each other on both sides along the conveying direction (X direction) can abut against both sides of the base plate 200 to limit its movement. Figure 4 As shown, the positioning element 222 is disposed between two adjacent conveying rollers 223. The positioning element 222 includes an adjusting seat 2221, an adjusting shaft 2222, and a positioning bearing 2223. The adjusting seat 2221 is adjustablely disposed on the roller seat 221. The adjusting seat 2221 includes a fixed part and an adjustable part. The fixed part is fixed to the roller seat 221, and the adjustable part is connected to the fixed part by a screw and bolt. The adjustable part is slidably installed with the roller seat 221, and the sliding direction is perpendicular to the conveying direction of the base plate 200, so as to adapt to the width specification of the base plate 200 for adjustment. The adjusting shaft 2222 and the adjustable part are adjustable along the height direction (Z direction). The positioning bearing 2223 is fixedly disposed on the adjusting shaft 2222, so that the height of the positioning bearing 2223 can be adjusted by the adjusting shaft 2222, so that the positioning bearing 2223 abuts against the base plate 200 for positioning. In some embodiments, such as Figure 4 The positioning component 222 also includes a positioning shaft 2224, which is detachably connected to the positioning bearing 2223 to increase the positioning adjustment range of the positioning component 222 and adapt to different base plate 200 specifications.

[0069] In some embodiments, the positioning device 2 further includes an end positioning mechanism 23, which includes a first baffle 233 and a second lifting drive member 232. The second lifting drive member 232 is configured to drive the first baffle 233 to move up and down to position the end face of the steel truss 100 and / or the end face of the base plate 200.

[0070] like Figure 1 and Figure 6As shown, the baffle positioning bracket 231 is fixedly mounted on the frame 1 and located below the base plate 200 to be welded. The second lifting drive component 232 is mounted on the baffle positioning bracket 231. The output end of the second lifting drive component 232 extends vertically upward (along the Z direction) through the baffle positioning bracket 231. The first baffle 233 is fixedly connected to the output end of the second lifting drive component 232 for lifting and lowering movement. The first baffle 233 is used for the initial positioning of the steel truss 100 and the base plate 200. When the steel truss 100 and the base plate 200 are conveyed forward, the second lifting drive component 232 drives the first baffle 233 to rise. When the steel truss 100 and the base plate 200 are conveyed to the first baffle 233, their ends are blocked by the first baffle 233. At this time, the initial position of the steel truss 100 and the base plate 200 is positioned. The initial position ensures that the first weld point between the steel truss 100 and the base plate 200 is in a fixed welding position. After positioning, the second lifting drive 232 lowers the first baffle 233, and the welding device 4 begins welding. The first baffle 233 does not affect the stepping conveying of the steel truss 100 and the base plate 200. The second lifting drive 232 is a linear drive mechanism such as a cylinder.

[0071] For some steel floor decks where the ends of the steel truss 100 protrude from the base plate 200 for welding, in this embodiment, a second baffle 234 is detachably installed on the first baffle 233. The first baffle 233 and the second baffle 234 respectively abut against the end face of the steel truss 100 and the end face of the base plate 200. The second baffle 234 is located on the side of the first baffle 233 facing the material feeding direction of the steel truss 100 and the base plate 200. When the steel truss 100 and the base plate 200 are conveyed, the end of the base plate 200 preferentially abuts against the second baffle 234. At this time, the end of the steel truss 100 has not yet contacted the first baffle 233. When the steel truss 100 continues to be conveyed forward, the end of the steel truss 100 abuts against the first baffle 233, at which time the end of the steel truss 100 protrudes from the end of the base plate 200. Of course, if the steel truss 100 is not required to protrude from the end of the base plate 200, the second baffle 234 can be removed.

[0072] In some embodiments, the feeding device 3 includes a first stepping mechanism 31 and a second stepping mechanism 32, along the conveying direction (e.g., Figure 3 The positive direction of X, indicated by the middle arrow, is the conveying direction of the steel truss 100 and the base plate 200. The first stepping mechanism 31 and the second stepping mechanism 32 are respectively located at both ends of the welding device 4 and are both fixed on the frame 1.

[0073] The first stepping mechanism 31 includes a first sliding plate 311 and a first clamping mechanism 312. The first sliding plate 311 is slidably installed on the frame 1 and located upstream of the fixed welding position. The first clamping mechanism 312 is provided on the first sliding plate 311 and is used to clamp and fix the steel truss 100 and the base plate 200. The first sliding plate 311 can drive the steel truss 100 and the base plate 200 to step along the conveying direction. The second stepping mechanism 32 includes a second sliding plate 321 and a second clamping mechanism 322. The second sliding plate 321 is slidably installed on the frame 1 and located downstream of the fixed welding position. The second clamping mechanism 322 is provided on the second sliding plate 321 and is used to clamp and fix the steel truss 100 and the base plate 200. The second sliding plate 321 can drive the steel truss 100 and the base plate 200 to step along the conveying direction. Due to their positional relationship, the first sliding plate 311 cannot clamp the steel truss 100 and the base plate 200 for the final welding step. Therefore, the final step welding of the steel truss 100 and the base plate 200 is achieved by clamping and stepping through the second sliding plate 321.

[0074] In this embodiment, the movable welding assembly 42 is described as being mounted on the first sliding plate 311.

[0075] like Figure 7 and Figure 9 As shown, the first sliding plate 311 is provided with two sets of first clamping mechanisms 312, and the second sliding plate 321 is provided with two sets of second clamping mechanisms 322. The first clamping mechanisms 312 and the second clamping mechanisms 322 are respectively used to clamp the steel truss 100 and the base plate 200. The first stepping mechanism 31 is used to synchronously feed the steel truss 100 and the base plate 200 from the first weld point to the second to last weld point. The second stepping mechanism 32 is located downstream of the first stepping mechanism 31 and is used to synchronously feed the steel truss 100 and the base plate 200 to the last weld point. In addition, during the automatic welding process, before the first stepping mechanism 31 returns to its original position, the second clamping mechanism 322 on the second stepping mechanism 32 will first clamp the steel truss 100 and the base plate 200. Then, the first clamping mechanism 312 on the first stepping mechanism 31 will release the clamping of the steel truss 100 and the base plate 200 to prevent the steel truss 100 and the base plate 200 from being displaced by friction. Before the first stepping mechanism 31 prepares to step forward, the first clamping mechanism 312 on the first stepping mechanism 31 will first clamp the steel truss 100 and the base plate 200. Then, the second clamping mechanism 322 on the second stepping mechanism 32 will release the clamping of the steel truss 100 and the base plate 200. That is, during the stepping and welding process of the steel truss 100 and the base plate 200, one of the first clamping mechanism 312 and the second clamping mechanism 322 will always clamp the steel truss 100 and the base plate 200 to ensure the welding effect of the steel truss 100 and the base plate 200.

[0076] Specifically, such as Figure 7 The first step mechanism 31 also includes a first step drive member 313, which is mounted on the frame 1. The first slide plate 311 is slidably connected to the frame 1, and the first step drive member 313 drives the first slide plate 311 to slide linearly relative to the frame 1. The first clamping mechanism 312 is mounted on the first slide plate 311 and can move synchronously with the first slide plate 311. With this structure, when the first clamping mechanism 312 clamps the steel truss 100 and the base plate 200, the first step drive member 313 drives the first slide plate 311 to slide, and at the same time drives the first clamping mechanism 312 mounted on the first slide plate 311 and the steel truss 100 and the base plate 200 clamped by the first clamping mechanism 312 to slide synchronously, so that the steel truss 100 and the base plate 200 move synchronously to the fixed welding position. During the stepping process, the movable welding assembly 42 on the first slide plate 311 performs welding operations.

[0077] In this embodiment, the first stepper drive component 313 is a motor, which is mounted on a motor bracket 314. The motor bracket 314 is mounted on the front end of the frame 1. The output end of the motor can be connected to the first end of the ball screw 316 via a coupling 315. Screw support seats 3161 are provided on both sides of the motor bracket 314. The ball screw 316 is rotatably passed through the screw support seats 3161. The second end of the ball screw 316 is threadedly connected to the stepper screw female seat 3162. The stepper screw female seat 3162 is fixedly connected to the first slide plate 311. First sliders 3111 are provided at the bottom of both sides of the first slide plate 311. A first slide rail 3112 is provided on the frame 1. The first slide rail 3112 is parallel to the axis of the ball screw 316. The first sliders 3111 are slidably disposed on the first slide rail 3112. When the motor drives the ball screw 316 to rotate, the stepper screw mother seat 3162 moves linearly relative to the ball screw 316, which in turn drives the first slide plate 311 to move linearly. At this time, the first clamping mechanism 312 installed on the first slide plate 311, as well as the steel truss 100 and the base plate 200 clamped by the first clamping mechanism 312, will also be driven to move.

[0078] In this embodiment, the arrangement of the first slider 3111 and the first slide rail 3112 not only restricts the rotational movement of the first slide plate 311 around the rotation axis of the ball screw 316, ensuring that the first slide plate 311 moves only in the axial direction of the rotation axis of the ball screw 316, but also effectively reduces the friction during the movement and reduces energy loss.

[0079] Preferably, two sets of sliding components are added below the center of the first slide plate 311. Each sliding component includes a second slide rail 317 and a second slider 318. The second slide rail 317 is parallel to the first slide rail 3112. The second slide rail 317 is mounted on the frame 1, and the second slider 318 is slidably mounted on the second slide rail 317. The second slider 318 is fixedly mounted on the bottom surface of the first slide plate 311. Since the movable welding assembly 42 is mounted on the first slide plate 311, the upper electrode mechanism 421 generates an impact force when pressing down during welding. The addition of the second slide rail 317 reduces this impact on the first slide plate 311. Preferably, as... Figure 7 The first step mechanism 31 also includes a first support roller 319, which is rotatably mounted on the first slide plate 311. The first support roller 319 is used to assist the first slide plate 311 in rolling and supporting the base plate 200, thereby reducing the friction between the base plate 200 and the first slide plate 311.

[0080] In this embodiment, the motor can be a servo motor. Compared with ordinary motors, servo motors have the advantages of controllability and high precision. Moreover, servo motors have a fast response speed and can frequently reverse direction to adjust the position of the first slide plate 311. The axis of the output shaft of the motor coincides with the axis of the ball screw 316.

[0081] It is understood that the first stepper drive 313 in this embodiment can also be a cylinder, and the output end of the cylinder is connected to the first slide plate 311 to drive the first slide plate 311 to move.

[0082] like Figure 9 As shown, the second stepping mechanism 32 also includes a second stepping drive 323, which is mounted on the frame 1. The second slide plate 321 is slidably connected to the frame 1, and the second stepping drive 323 drives the second slide plate 321 to slide linearly relative to the frame 1. The second clamping mechanism 322 is mounted on the second slide plate 321 and can slide with the second slide plate 321. With this structure, when the second clamping mechanism 322 clamps the steel truss 100 and the base plate 200, the second stepping drive 323 drives the second slide plate 321 to slide, simultaneously driving the second clamping mechanism 322 mounted on the second slide plate 321 and the steel truss 100 and the base plate 200 clamped by the second clamping mechanism 322 to step synchronously.

[0083] For example, the second stepper drive 323 is a cylinder, which is mounted on a first cylinder holder 324. The first cylinder holder 324 is mounted at the rear end of the frame 1. The output end of the cylinder is connected to a connecting shaft 326 via a fisheye bearing 325. The axis of the connecting shaft 326 is perpendicular to the axis of the cylinder output end. The second slide plate 321 is fixed to the connecting shaft 326. By extending or retracting the cylinder, the second slide plate 321 can be driven to move linearly.

[0084] Preferably, a third slider 3211 is provided on both sides of the bottom of the second slide plate 321, and a third slide rail 3212 is provided on the frame 1. The third slider 3211 slides on the third slide rail 3212, and the third slide rail 3212 is parallel to the axis of the output end of the second stepper drive 323.

[0085] The first stepping mechanism 31 and the second stepping mechanism 32 described above can employ the same drive structure to drive the first slide plate 311 and the second slide plate 321 to slide on the frame 1, respectively. Further, as... Figure 9 A second support roller 327 is rotatably mounted on the second slide plate 321. The second support roller 327 is used to roll and support the base plate 200, reducing the friction between the base plate 200 and the second slide plate 321.

[0086] In some embodiments, the first clamping mechanism 312 and the second clamping mechanism 322 adopt the same structure. Two first clamping mechanisms 312 are disposed on the first slide plate 311, and two second clamping mechanisms 322 are disposed on the second slide plate 321. Taking the first clamping mechanism 312 disposed on the first slide plate 311 as an example, the first clamping mechanism 312 includes a clamping fixing seat 3121, a third lifting drive member 3122, an upper pressure plate 3123, and a lower pressure plate 3124. The clamping fixing seat 3121 is disposed on the first slide plate 311, and a guide shaft 3125 is provided on the clamping fixing seat 3121. The third lifting drive member 3122 is disposed at the top end of the guide shaft 3125. The output end is set vertically downward; the upper pressing plate 3123 is set at the output end of the third lifting drive 3122, and the lower surface of the upper pressing plate 3123 is provided with a pressing block 3126; the lower pressing plate 3124 is set on the first sliding plate 311, and the lower pressing plate 3124 is set directly opposite the pressing block 3126. The third lifting drive 3122 drives the pressing block 3126 to descend and press the steel truss 100 and the bottom plate 200 onto the lower pressing plate 3124.

[0087] like Figure 10 In this embodiment, taking the third lifting drive component 3122 as an example, the cylinder is a pressure plate cylinder, which is mounted on the clamping and fixing seat 3121 via four guide shafts 3125 and two cylinder connecting plates 3127. The two clamping and fixing seats 3121 are symmetrically arranged on the first sliding plate 311. The pressure plate cylinder can drive the upper pressure plate 3123 to move up and down, pressing down and lifting up. The four guide shafts 3125 pass through the upper pressure plate 3123 to provide a guiding function.

[0088] During the automatic welding process, when the second clamping mechanism 322 on the second stepping mechanism 32 clamps the steel truss 100 and the base plate 200, the steel truss positioning mechanism 21 simultaneously clamps and positions the steel truss 100. By clamping and fixing the steel truss 100 and the base plate 200 at the front and rear positions, the steel truss 100 and the base plate 200 can be effectively prevented from tilting during the welding process.

[0089] In this embodiment, the welding device 4 includes two transformers, namely a first transformer 43 and a second transformer 44. The fixed welding assembly 41 includes four sets of upper electrode mechanisms 421 and two sets of lower electrode mechanisms 422 corresponding to them. The movable welding assembly 42 includes two sets of upper electrode mechanisms 421 and one set of lower electrode mechanisms 422 corresponding to them. The two sets of upper electrode mechanisms 421 of the fixed welding assembly 41 and the two sets of upper electrode mechanisms 421 of the movable welding assembly 42 are respectively connected to the two poles of the first transformer 43. The other two sets of upper electrode mechanisms 421 of the fixed welding assembly 41 are respectively connected to the two poles of the second transformer 44. The fixed welding assembly 41 and the movable welding assembly 42 have the same structure, both including an upper electrode mechanism 421 and a lower electrode mechanism 422, but their installation positions are different. The fixed welding assembly 41 is fixedly installed on the frame 1 and located between the first stepping mechanism 31 and the second stepping mechanism 32, and is used to weld the steel truss 100 and the base plate 200 at the fixed welding position. The movable welding assembly 42 is fixedly installed on the first slide plate 311 and moves synchronously with the first slide plate 311. When the first clamping mechanism 312 on the first slide plate 311 drives the steel truss 100 and the base plate 200 to move step by step, the movable welding assembly 42 welds the steel truss 100 and the base plate 200.

[0090] The upper electrode mechanism 421 and the lower electrode mechanism 422 will be described in detail below using the movable welding assembly 42 as an example.

[0091] In some embodiments, the upper electrode mechanism 421 includes an upper fixed seat 4211, a fourth lifting drive member 4212, and a guide post 4213. The upper fixed seat 4211 of the fixed welding assembly 41 is disposed on the frame 1, and the upper fixed seat 4211 of the movable welding assembly 42 is disposed on the first sliding plate 311. The fourth lifting drive member 4212 is disposed on the upper fixed seat 4211, and the output end of the fourth lifting drive member 4212 slides vertically downward through the upper fixed seat 4211. The top end of the guide post 4213 is connected to the output end of the fourth lifting drive member 4212, and the bottom end of the guide post 4213 is provided with a connecting seat 4214. An upper electrode seat 4215 is disposed on the connecting seat 4214, and an electrode strip 4216 is disposed on the upper electrode seat 4215. The connecting seat 4214 is electrically connected to the first transformer 43.

[0092] like Figure 8As shown, for the movable welding assembly 42, the upper fixed seat 4211 of the upper electrode mechanism 421 is mounted on the welding bracket 45. The welding bracket 45 includes a support column 451, a support beam 452, and a dovetail frame 454. The bottom end of the support column 451 is fixed to the first sliding plate 311. The two ends of the support beam 452 are respectively connected to the top ends of the two support columns 451. The support beam 452 is made of steel. The dovetail frame 454 is slidably fitted with the support beam 452 and can be locked at any position on the support beam 452. The upper fixed seat 4211 is fixedly connected to the dovetail frame 454, realizing the position adjustment of the upper electrode mechanism 421 in the Y direction, which facilitates the initial position adjustment of the movable welding assembly 42. Angle supports 453 are provided between the two ends of the support beam 452 and the support column 451. The angle supports 453 improve the stability of the support beam 452 and the upper electrode mechanism 421. Taking the fourth lifting drive component 4212 as an example, if a cylinder is used... Figure 11 The cylinder is fixed on the second cylinder seat 4217, which is fixed on the top of the upper fixed seat 4211. The dovetail bracket 454 is fixed on one side of the upper fixed seat 4211. The side of the upper fixed seat 4211 is provided with a dovetail groove to cooperate with the dovetail bracket 454. The top of the guide post 4213 passes through the upper fixed seat 4211 and is connected to the output end of the cylinder. The bottom end of the guide post 4213 is connected to the connecting seat 4214. The output end of the cylinder drives the guide post 4213 to rise and fall. The guide post 4213 drives the connecting seat 4214 to move, which in turn drives the upper electrode seat 4215 and the electrode strip 4216 to rise and fall.

[0093] In some embodiments, the lower electrode mechanism 422 includes a lower electrode seat 4221, an electrode block 4222, and an insulating plate 4223. The lower electrode seat 4221 is provided with a groove, and the top of both sides of the groove wall is provided with an electrode block 4222. The two electrode blocks 4222 are respectively provided for two electrode strips 4216. The insulating plate 4223 is provided at the bottom end of the lower electrode seat 4221, and the lower electrode seat 4221 is fixedly connected to the frame 1 or fixedly connected to the first slide plate 311 through the insulating plate 4223.

[0094] like Figure 12 As shown, the lower electrode holder 4221 adopts a groove structure to isolate the two electrode blocks 4222. The top of the two groove walls of the lower electrode holder are provided with mounting grooves, and the electrode blocks 4222 are fixedly installed in the mounting grooves. An insulating plate 4223 is provided at the bottom of the lower electrode holder 4221 to achieve insulated installation between the lower electrode holder 4221 and the frame 1 or the feeding device 3.

[0095] In this embodiment, the upper electrode mechanism 421 has four sets of adjustable positions mounted on the frame 1, and two additional sets of adjustable positions mounted on the welding bracket 45 (or the first sliding plate 311) to accommodate welding of steel trusses 100 of different specifications at different welding point positions. The aforementioned position adjustment refers to the initial position adjustment of the upper fixed seat 4211 along the Y direction. After the adjustment and positioning, no further adjustment is required during the welding process.

[0096] Corresponding to the upper electrode mechanism 421, three sets of lower electrode mechanisms 422 are provided, with each set of lower electrode mechanisms 422 correspondingly positioned below the two sets of upper electrode mechanisms 421. Two sets of lower electrode mechanisms 422 are mounted on the frame 1, and one set of lower electrode mechanisms 422 is correspondingly mounted on the first slide plate 311 of the first stepper mechanism 31.

[0097] When welding the steel truss 100 and the base plate 200 is required, the electrode bar 4216 of the upper electrode mechanism 421 moves downward to press the steel truss 100 and the base plate 200 together, so that the base plate 200 contacts the lower electrode block 4222, forming a bridge-type closed loop. The high current of low voltage flows through the contact surface and adjacent area of ​​the steel truss 100 and the base plate 200, and the resulting resistance heat heats the contact part (that is, the weld point) to a melting or plastic state for welding.

[0098] In this embodiment, for the case where three steel trusses 100 are welded on the base plate 200, there are two transformers, namely the first transformer 43 and the second transformer 44. Among the four sets of upper electrode mechanisms 421 of the fixed welding assembly 41 on the frame 1, two sets are respectively connected to the two poles of the second transformer 44, and the other two sets of upper electrode mechanisms 421 and the two sets of upper electrode mechanisms 421 on the first stepping mechanism 31 are simultaneously and respectively connected to the two poles of the first transformer 43.

[0099] When using the steel reinforcement floor deck welding machine provided in this embodiment, the base plate 200 and the steel truss 100 are first conveyed forward along the positive X direction. The first baffle 233 of the end positioning mechanism 23 rises. When the steel truss 100 and the base plate 200 are conveyed to the first baffle 233, their ends are abutted by the first baffle 233. At this time, the initial position of the steel truss 100 and the base plate 200 in the conveying direction is positioned. After the initial positioning is completed, the first baffle 233 retracts downward. During this process, the steel truss 100 and the base plate 200 pass through two base plate positioning mechanisms 22 to position the base plate 200 in the width direction. Then, the steel truss positioning mechanism 21 precisely positions the steel truss 100. At this time, the first stepping mechanism 31 is located on the side close to the frame 1. At the same time, the fixed welding assembly 41 installed on the frame 1 and the upper electrode mechanism 421 of the movable welding assembly 42 installed on the first stepping mechanism 31 are both located on the same straight line.

[0100] After preparation, the two sets of upper electrode mechanisms 421 of the movable welding assembly 42 installed on the first stepping mechanism 31 first perform welding. After welding, the four sets of upper electrode mechanisms 421 installed on the frame 1 begin to press down for welding. During the pressing process, the first stepping mechanism 31 begins to move away from the fixed welding position. When it reaches the farthest point, the fixed welding assembly 41 also completes welding and lifts up.

[0101] Then, two sets of first clamping mechanisms 312 mounted on the first stepping mechanism 31 clamp the base plate 200 and the steel truss 100, and move towards the fixed welding position following the first stepping mechanism 31. Simultaneously, the movable welding assembly 42 mounted on the first stepping mechanism 31 performs welding. This achieves alternating welding. Welding is completed when the first stepping mechanism 31 has reached its designated position. The fixed welding assembly 41 mounted on the frame 1 begins welding, and simultaneously, the first clamping mechanisms 312 on the first stepping mechanism 31 lift. The first stepping mechanism 31 then moves away from the fixed welding position, while at the same time, the second clamping mechanism 322 on the second stepping mechanism 32 clamps the base plate 200, preventing the steel truss 100 and the base plate 200 from reversing along with the first stepping mechanism 31. This process is repeated until the second-to-last weld point is completed. At this point, the first stepping mechanism 31 retracts to its original position and can no longer advance the steel truss 100 and the base plate 200. The second stepping mechanism 32 then advances the steel truss 100 and the base plate 200, placing the remaining last weld point at the fixed welding assembly 41, thus completing the welding. During the welding process, two transformers are alternately controlled. The second transformer 44 controls two sets of upper electrode mechanisms 421 to discharge sequentially. One set of upper electrode mechanisms 421 follows the welding during the advance. Compared with the existing technology that uses three transformers, this embodiment uses two transformers, which greatly reduces the impact of the transformers on the external power grid, improves construction efficiency, and reduces construction costs.

[0102] The steel floor deck welding machine provided in the above embodiment, which takes a steel floor deck with six welding points as an example, is also applicable to the welding of steel floor decks with twelve welding points and other numbers of welding points. According to the number of steel trusses 100 on the base plate 200, the number of fixed welding components 41, movable welding components 42 and transformers and their arrangement can be set according to the alternating welding principle. The goal of reducing the number of transformers and improving production efficiency can be achieved. This article will not exhaustively list them.

[0103] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A welding machine for reinforced concrete floor decking, wherein the reinforced concrete floor decking comprises a steel truss (100) and a base plate (200); characterized in that, The steel reinforcement floor decking welding machine includes: A frame (1) is provided with a fixed welding position; Positioning device (2), the positioning device (2) is provided on the frame (1), the positioning device (2) is used to position the steel truss (100) and the base plate (200); Feeding device (3), which is slidably mounted on the frame (1), is used to synchronously feed the positioned steel truss (100) and the base plate (200) in a step-by-step manner, with the feeding direction being the length direction of the steel floor slab; The welding device (4) includes a fixed welding assembly (41) and a movable welding assembly (42). The movable welding assembly (42) is mounted on the feeding device (3) and welds the steel truss (100) and the base plate (200) during the stepping process. The fixed welding assembly (41) is fixedly mounted on the frame (1) and welds the steel truss (100) and the base plate (200) when they step to the fixed welding position.

2. The steel reinforcement floor decking welding machine according to claim 1, characterized in that, The positioning device (2) includes: The base plate positioning mechanism (22) is provided in two parts. The two base plate positioning mechanisms (22) are respectively located at both ends of the fixed welding position along the conveying direction. The base plate positioning mechanism (22) can support the base plate (200) and abut against both sides of the base plate (200) along the conveying direction to limit its position. A steel truss positioning mechanism (21) is located above the base plate positioning mechanism (22). The steel truss positioning mechanism (21) includes a positioning block (214) and a first lifting drive (213). The positioning block (214) is located at the output end of the first lifting drive (213). The first lifting drive (213) is configured to drive the positioning block (214) to move up and down, so that the positioning block (214) can position the steel truss (100) and press it onto the base plate (200).

3. The steel reinforcement floor decking welding machine according to claim 2, characterized in that, The positioning device (2) further includes an end positioning mechanism (23), which includes a first baffle (233) and a second lifting drive (232). The second lifting drive (232) is configured to drive the first baffle (233) to move up and down to position the end face of the steel truss (100) and / or the end face of the base plate (200).

4. The steel reinforcement floor decking welding machine according to claim 3, characterized in that, A second baffle (234) is detachably installed on the first baffle (233), and the first baffle (233) and the second baffle (234) respectively abut against the end face of the steel truss (100) and the end face of the base plate (200).

5. The steel reinforcement floor decking welding machine according to claim 2, characterized in that, The base plate positioning mechanism (22) includes: A roller seat (221) on which a plurality of conveying rollers (223) are rotatably mounted to provide rolling support for the base plate (200); Positioning element (222), there are multiple positioning elements (222), and the multiple positioning elements (222) are all positioned adjustablely on the roller seat (221). Any two positioning elements (222) arranged opposite each other on both sides along the conveying direction can abut against both sides of the base plate (200) to limit the position.

6. The steel reinforcement floor decking welding machine according to claim 2, characterized in that, The positioning block (214) is provided corresponding to the steel truss (100), and each positioning block (214) is provided with a V-groove (2141), which is adapted to the connection position of the top bar and web bar of the steel truss (100).

7. The steel reinforcement floor decking welding machine according to claim 1, characterized in that, The feeding device (3) includes: The first step feeding mechanism (31) includes a first slide plate (311) and a first clamping mechanism (312). The first slide plate (311) is slidably mounted on the frame (1) and located upstream of the fixed welding position. The first clamping mechanism (312) is provided on the first slide plate (311). The first clamping mechanism (312) is used to clamp and fix the steel truss (100) and the base plate (200). The first slide plate (311) can drive the steel truss (100) and the base plate (200) to move stepwise along the conveying direction. The movable welding assembly (42) is provided on the first slide plate (311). The second stepping mechanism (32) includes a second slide plate (321) and a second clamping mechanism (322). The second slide plate (321) is slidably mounted on the frame (1) and located downstream of the fixed welding position. The second clamping mechanism (322) is provided on the second slide plate (321). The second clamping mechanism (322) is used to clamp and fix the steel truss (100) and the base plate (200). The second slide plate (321) can drive the steel truss (100) and the base plate (200) to step along the conveying direction.

8. The steel reinforcement floor decking welding machine according to claim 7, characterized in that, Both the first clamping mechanism (312) and the second clamping mechanism (322) include: A clamping fixing seat (3121) is provided on the first sliding plate (311) or the second sliding plate (321), and a guide shaft (3125) is provided on the clamping fixing seat (3121); The third lifting drive (3122) is located at the top of the guide shaft (3125), and the output end of the third lifting drive (3122) is vertically downward. Upper pressure plate (3123), the upper pressure plate (3123) is located at the output end of the third lifting drive (3122), and the lower surface of the upper pressure plate (3123) is provided with a pressure block (3126); A lower pressing plate (3124) is disposed on the first sliding plate (311) or the second sliding plate (321). The lower pressing plate (3124) is positioned directly opposite the pressing block (3126). The third lifting drive (3122) drives the pressing block (3126) to descend and press the steel truss (100) and the bottom plate (200) onto the lower pressing plate (3124).

9. The steel reinforcement floor decking welding machine according to claim 7, characterized in that, The welding device (4) further includes a first transformer (43) and a second transformer (44). The fixed welding assembly (41) includes four sets of upper electrode mechanisms (421) and two sets of lower electrode mechanisms (422) corresponding to them. The movable welding assembly (42) includes two sets of the upper electrode mechanisms (421) and one set of lower electrode mechanisms (422) corresponding to them. The two sets of upper electrode mechanisms (421) of the fixed welding assembly (41) and the two sets of upper electrode mechanisms (421) of the movable welding assembly (42) are simultaneously connected to the two poles of the first transformer (43). The other two sets of upper electrode mechanisms (421) of the fixed welding assembly (41) are connected to the two poles of the second transformer (44).

10. The steel reinforcement floor decking welding machine according to claim 9, characterized in that, The upper electrode mechanism (421) includes: Upper fixed seat (4211), the upper fixed seat (4211) of the fixed welding assembly (41) is disposed on the frame (1), and the upper fixed seat (4211) of the movable welding assembly (42) is disposed on the first slide plate (311) or the second slide plate (321); The fourth lifting drive (4212) is disposed on the upper fixed seat (4211), and the output end of the fourth lifting drive (4212) slides vertically downward through the upper fixed seat (4211). A guide post (4213) is provided at the top end of which is connected to the output end of the fourth lifting drive (4212). A connecting seat (4214) is provided at the bottom end of the guide post (4213). An upper electrode seat (4215) is provided on the connecting seat (4214). An electrode strip (4216) is provided on the upper electrode seat (4215). The connecting seat (4214) is electrically connected to the first transformer (43) or the second transformer (44).

11. The steel reinforcement floor decking welding machine according to claim 10, characterized in that, The lower electrode mechanism (422) includes: The lower electrode holder (4221) is provided with a groove; Electrode blocks (4222) are provided at the top of both sides of the groove wall, and the two electrode blocks (4222) are respectively provided for the two electrode strips (4216); An insulating plate (4223) is disposed at the bottom end of the lower electrode seat (4221), and the lower electrode seat (4221) is fixedly connected to the frame (1) or fixedly connected to the first slide plate (311) through the insulating plate (4223).

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