Steel bar floor support plate welding machine

Abstract

The invention 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 the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar floor deck processing, and in particular to a steel bar floor deck welding machine. Background Art

[0002] Steel bar floor decking, also known as steel bar truss floor decking, usually includes steel bar trusses and galvanized sheets, which are assembled by welding at multiple welding points to form a steel bar floor decking.

[0003] When welding between steel trusses and galvanized sheets, multiple steel trusses need to be welded on one galvanized sheet, and multiple trusses are usually welded simultaneously to improve welding efficiency. In traditional bridge loop welding equipment, a transformer is required for every two welding points, and three transformers are required for welding three steel trusses and galvanized sheets. Therefore, the cost of welding facilities is high, the impact on the power grid is large during welding, and each group of welding points is manually operated to move step by step, which is inefficient. Summary of the invention

[0004] The object of the present invention is to provide a steel bar floor deck welding machine to solve the problems of high cost, great impact on the power grid during welding and low working efficiency of the existing welding machines.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A steel floor deck welding machine, wherein the steel floor deck comprises a steel truss and a bottom plate; the steel floor deck welding machine comprises:

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

[0008] A positioning device, the positioning device is arranged on the frame, and the positioning device is used to position the steel bar truss and the bottom plate;

[0009] A feeding device, the feeding device is slidably arranged on the frame, and the feeding device is used to synchronously step and convey the positioned steel bar truss and the bottom plate, and the conveying direction is the length direction of the steel bar floor deck;

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

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

[0012] A bottom plate positioning mechanism, wherein two bottom plate positioning mechanisms are provided, and the two bottom plate positioning mechanisms are arranged at both ends of the fixed welding position along the conveying direction, and the bottom plate positioning mechanism can support the bottom plate and abut against both sides of the bottom plate along the conveying direction to limit the position;

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

[0014] In some embodiments, the positioning device also includes an end positioning mechanism, which includes a first baffle and a second lifting drive member, and the second lifting drive member is configured to drive the first baffle to lift and lower 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 plate is detachably mounted on the first baffle plate, and the first baffle plate and the second baffle plate abut against an end surface of the steel bar truss and an end surface of the bottom plate, respectively.

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

[0017] A roller seat, on which a plurality of conveying rollers are rotatably mounted to support the bottom plate in a rolling manner;

[0018] A positioning member, wherein a plurality of positioning members are provided, and the plurality of positioning members are all arranged on the roller seat in an adjustable manner, and any two positioning members arranged opposite to each other on both sides of the conveying direction can abut against both sides of the bottom plate to limit the position.

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

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

[0021] A first stepping mechanism, the first stepping mechanism comprises a first slide plate and a first clamping mechanism, the first slide plate is slidably mounted on the frame and is located upstream of the fixed welding position, the first slide plate is provided with a first clamping mechanism, the first clamping mechanism is used to clamp and fix the steel bar truss and the bottom plate, the first slide plate can drive the steel bar truss and the bottom plate to step along the conveying direction, and the mobile 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 is located downstream of the fixed welding position. The second slide plate is provided with a second clamping mechanism. The second clamping mechanism is used to clamp and fix the steel truss and the bottom plate. The second slide plate can drive the steel truss and the bottom plate to step along the conveying direction.

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

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

[0025] A third lifting drive member, wherein the third lifting drive member is disposed at the top end of the guide shaft, and an output end of the third lifting drive member is disposed vertically downward;

[0026] An upper pressing plate, the upper pressing plate being arranged at the output end of the third lifting driving member, and a pressing block being arranged on the lower surface of the upper pressing plate;

[0027] A lower clamping plate is arranged on the first slide plate or the second slide plate, and the lower clamping plate is arranged opposite to the clamping block. The third lifting drive member drives the clamping block to descend and presses the steel truss and the bottom plate onto the lower clamping plate.

[0028] In some embodiments, the welding device also includes a first transformer and a second transformer, the fixed welding assembly includes four groups of upper electrode mechanisms and two groups of lower electrode mechanisms corresponding thereto, and the mobile welding assembly includes two groups of upper electrode mechanisms and one group of lower electrode mechanisms corresponding thereto, wherein the two groups of upper electrode mechanisms of the fixed welding assembly and the two groups of upper electrode mechanisms of the mobile welding assembly are both connected to the two poles of the first transformer at the same time, and the other two groups of upper electrode mechanisms of the fixed welding assembly are both connected to the two poles of the second transformer.

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

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

[0031] A fourth lifting drive member, the fourth lifting drive member is arranged on the upper fixed seat, and an output end of the fourth lifting drive member slides vertically downward and penetrates the upper fixed seat;

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

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

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

[0035] Electrode blocks, the tops of the groove walls on both sides of the groove are provided with the electrode blocks, and the two electrode blocks are respectively provided corresponding to the two electrode strips;

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

[0037] Beneficial effects of the present invention:

[0038] The steel bar floor deck welding machine provided by the present invention realizes the positioning and step-by-step transportation of the steel bar truss and the bottom plate by arranging a positioning device and a feeding device, which is convenient for automatic step-by-step welding of the steel bar truss and the bottom plate, thereby improving the automation degree and work efficiency of welding; by arranging the welding device into two parts, a fixed welding assembly and a mobile welding assembly, the fixed welding assembly can weld the steel bar truss and the bottom plate that are stepped into place, and the mobile welding assembly can weld the steel bar truss and the bottom plate during the stepping process, thereby realizing alternating welding. For steel bar floor decks of the same specification, the alternating welding method reduces the impact on the power grid during the welding process, thereby greatly improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a structural schematic diagram of a steel bar floor deck welding machine provided by an embodiment of the present invention from a first perspective;

[0040] Figure 2 is a structural schematic diagram of a steel bar floor deck welding machine provided by an embodiment of the present invention from a second viewing angle;

[0041] Figure 3 It is a structural schematic diagram of a steel bar truss positioning mechanism in a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0042] Figure 4 It is a structural schematic diagram of a front bottom plate positioning mechanism in a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0043] Figure 5 It is a structural schematic diagram of a rear bottom plate positioning mechanism in a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0044] Figure 6 It is a structural schematic diagram of an end positioning mechanism in a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0045] Figure 7 It is a structural schematic diagram of the first stepping mechanism in the steel bar floor deck welding machine provided by an embodiment of the present invention;

[0046] Figure 8 It is a structural schematic diagram of a movable welding assembly mounted on the first step mechanism of a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0047] Fig. 9 It is a structural schematic diagram of the second stepping mechanism in the steel bar floor deck welding machine provided by an embodiment of the present invention;

[0048] Fig.10 It is a structural schematic diagram of a first clamping mechanism in a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0049] Fig.11 It is a structural schematic diagram of an upper electrode mechanism in a steel bar floor deck welding machine provided by an embodiment of the present invention;

[0050] Fig.12 It is a structural schematic diagram of the lower electrode mechanism in the steel bar floor deck welding machine provided by an embodiment of the present invention;

[0051] Fig.13 It is a schematic diagram of the structure of a reinforced concrete floor deck involved in an embodiment of the present invention.

[0052] In the figure:

[0053] 100, steel truss; 101, footing; 200, bottom plate;

[0054] 1. Frame;

[0055] 2. Positioning device; 21. Steel bar truss positioning mechanism; 211. Pressing bracket; 212. Pressing connecting plate; 213. First lifting drive member; 214. Positioning block; 2141. V-shaped groove; 215. Fifth lifting drive member; 2151. Hand wheel; 2152. Screw rod; 22. Bottom plate positioning mechanism; 221. Roller seat; 222. Positioning member; 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 member; 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 fixed seat; 3122. Third lifting drive member; 3123. Upper clamping plate; 3124. Lower clamping plate; 3125. Guide shaft; 3126. Clamping block; 3127. Cylinder connecting plate; 313. First stepping drive member; 314. Motor bracket; 315. Coupling; 3 16. Ball screw; 3161. Screw support seat; 3162. Step screw base; 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 member; 324. First cylinder seat; 325. Fisheye bearing; 326. Connecting shaft; 327. Second support roller;

[0057] 4. Welding device; 41. Fixed welding assembly; 42. Mobile welding assembly; 421. Upper electrode mechanism; 4211. Upper fixed seat; 4212. Fourth lifting drive member; 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. Angle support; 454. Dovetail bracket. DETAILED DESCRIPTION

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0059] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0062] The embodiment of the present invention provides a steel bar floor deck welding machine, such as Fig.13 , which is used to weld a plurality of steel trusses 100 on a bottom plate 200 to form a steel floor deck, wherein the bottom plate 200 is generally a galvanized plate, and the foot 101 of the steel truss 100 is in close contact with the surface of the bottom plate 200, and the contact portion between the foot 101 and the bottom plate 200 is welded and fixed. Among them, three steel trusses 100 are welded in parallel in the width direction (Y direction) of the steel floor deck, and each steel truss 100 has a plurality of foots 101 along the length direction (X direction) of the bottom plate 200, which need to be welded in sequence. In the prior art, the foot 101 of three steel trusses 100 at the same cross section is welded synchronously, which requires three transformers to work at the same time, which has a great impact on the power grid, and the structures of the bottom plate 200 and the steel truss 100 are irregular, which is inconvenient for positioning and automatic displacement, and requires manual assistance, low work efficiency, and high labor intensity.

[0063] In order to solve the above technical problems, the embodiment of the present invention provides a steel bar floor deck welding machine, such as Figure 1-Figure 12The steel bar floor deck welding machine includes a frame 1, a positioning device 2, a feeding device 3 and a welding device 4, wherein the positioning device 2 is arranged on the frame 1, and the positioning device 2 is used to position the steel bar truss 100 and the bottom plate 200; the positioning includes the end positioning of the initial position of the steel bar truss 100 and the bottom plate 200 and the two-side guide positioning during the welding process. The feeding device 3 is slidably arranged on the frame 1, and the feeding device 3 is used to synchronously step and convey the positioned steel bar truss 100 and the bottom plate 200, and the conveying direction is the length direction of the steel bar floor deck; the welding device 4 includes a fixed welding assembly 41 and a movable welding assembly 42, and the movable welding assembly 42 is arranged on the feeding device 3 and welds the steel bar truss 100 and the bottom plate 200 during the stepping process; the fixed welding assembly 41 is fixedly arranged on the frame 1 and welds the steel bar truss 100 and the bottom plate 200 that step to the fixed welding position.

[0064] It should be noted that the fixed welding assembly 41 and the movable welding assembly 42 are installed at different positions, and are started alternately to perform welding during operation, and the specific structures may be the same. The steel bar floor deck welding machine provided by the present invention realizes the initial positioning, welding positioning and step-by-step conveying of the steel bar truss 100 and the base plate 200 by setting a positioning device 2 and a feeding device 3, so as to facilitate the automatic step-by-step welding of the steel bar truss 100 and the base plate 200, improve the automation degree and work efficiency of welding, and help reduce labor intensity; by setting the welding device 4 as two parts, namely a fixed welding component 41 and a mobile welding component 42, the fixed welding component 41 can weld the steel bar truss 100 and the base plate 200 that have stepped into place (the base foot 101 to be welded is located in the fixed welding position), and the mobile welding component 42 can move synchronously with the feeding device 3 and weld the steel bar truss 100 and the base plate 200 during the stepping process. The fixed welding component 41 and the mobile welding component 42 are welded alternately. For steel bar floor decks of the same specification, the alternating welding method reduces the impact on the power grid during the welding process, thereby greatly improving the work efficiency.

[0065] In some embodiments, the positioning device 2 includes a base plate positioning mechanism 22 and a steel bar truss positioning mechanism 21. Two base plate positioning mechanisms 22 are provided. The two base plate positioning mechanisms 22 are arranged 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 bar truss positioning mechanism 21 is located above the base plate positioning mechanism 22. The steel bar truss positioning mechanism 21 includes a positioning block 214 and a first lifting drive member 213. The positioning block 214 is arranged 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 bar truss 100 and crimp it onto the base plate 200.

[0066] like Figure 3The structure diagram of the steel bar truss positioning mechanism 21 is shown, wherein the first lifting drive member 213 adopts a linear drive member such as a cylinder, and the number of the first lifting drive members 213 and the positioning blocks 214 are matched with the number of the steel bar trusses 100 so as to realize the simultaneous positioning of each steel bar truss 100. In this embodiment, three first lifting drive members 213 are arranged at intervals on the pressing material connection plate 212 and correspond to the standard positions of the three steel bar trusses 100 one by one. The two ends of the pressing material connection plate 212 are respectively fixed on two pressing material brackets 211, and the two pressing material brackets 211 are symmetrically arranged on both sides of the fixed welding position and the bottom end of the pressing material bracket 211 is fixed on the frame 1. The output end of the first lifting drive member 213 is downward and connected to the positioning block 214. Preferably, the positioning block 214 is arranged corresponding to the steel bar truss 100, and each positioning block 214 is provided with a V-shaped groove 2141, and the V-shaped groove 2141 is adapted to the connection position of the top reinforcement and the web reinforcement of the steel bar truss 100. After the bottom plate 200 is positioned by the bottom plate positioning mechanism 22, the position of the steel truss 100 placed above the bottom plate 200 may have a small deviation from the required standard position. At this time, by moving the positioning block 214 downward, the V-groove 2141 gradually contacts the connection position (the highest position) of the top reinforcement and the web reinforcement of the steel truss 100. Through the V-groove 2141, the position of the steel truss 100 can be straightened to achieve the purpose of positioning the steel truss 100. When welding, the positioning block 214 is crimped onto the steel truss 100, which can also prevent the steel truss 100 from warping during the welding process, thereby helping to improve the welding quality. Furthermore, the steel truss positioning mechanism 21 also includes a fifth lifting drive member 215. In this embodiment, the fifth lifting drive member 215 is a manual drive member. Of course, a pneumatic or electric drive mechanism such as a cylinder can also be used, such as Figure 3 When the fifth lifting drive member 215 is a manual drive member, the fifth lifting drive member 215 includes a handwheel 2151 and a screw rod 2152. The handwheel 2151 is fixed at the top of the screw rod 2152. The bottom end of the screw rod 2152 transmits the press bracket 211 and is threadedly connected with the press connecting plate 212. At this time, the press connecting plate 212 is slidably connected with the press bracket 211 through a guide rail slider. The screw rod 2152 is driven to rotate by the handwheel 2151, and the press connecting plate 212 moves up and down along the press bracket 211, thereby increasing the height adjustment range of the positioning block 214 and having a wider range of applications.

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

[0068] Taking the front bottom plate positioning mechanism as an example, the front bottom plate positioning mechanism includes a roller seat 221 and a positioning member 222. The roller seat 221 is installed on the frame 1. A plurality of conveying rollers 223 are rotatably installed on the roller seat 221 to roll and support the bottom plate 200. The conveying rollers 223 can reduce the friction resistance during the conveying process of the bottom plate 200. There are multiple positioning members 222, and the multiple positioning members 222 are all adjustable on the roller seat 221. Any two positioning members 222 arranged opposite to each other on both sides of the conveying direction (X direction) can abut against both sides of the bottom plate 200 to limit the position. Figure 4 As shown, the positioning member 222 is disposed between two adjacent conveying rollers 223, and the positioning member 222 includes an adjusting seat 2221, an adjusting shaft 2222 and a positioning bearing 2223. The adjusting seat 2221 is adjustable and disposed on the roller seat 221. The adjusting seat 2221 includes a fixed portion and an adjustable portion. The fixed portion is fixed on the roller seat 221, and the adjustable portion is connected to the fixed portion by screws and bolts. The adjustable portion is slidably installed with the roller seat 221, and the sliding direction is perpendicular to the conveying direction of the bottom plate 200, so as to facilitate the adjustment to the width specification of the bottom plate 200; the adjusting shaft 2222 and the adjustable portion are adjustable in the height direction (Z direction), and the positioning bearing 2223 is fixedly arranged on the adjusting shaft 2222, and then the height of the positioning bearing 2223 can be adjusted by the adjusting shaft 2222, so that the positioning bearing 2223 can be abutted against the bottom plate 200 for positioning. In some embodiments, as Figure 4 The positioning member 222 also includes a positioning shaft 2224, which is detachably connected to the positioning bearing 2223 so as to increase the positioning adjustment range of the positioning member 222 and adapt to different specifications of the base plate 200.

[0069] In some embodiments, the positioning device 2 also 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 bottom plate 200.

[0070] like Figure 1 and Figure 6As shown, the baffle plate positioning bracket 231 is fixedly arranged on the frame 1 and is located below the bottom plate 200 to be welded, the second lifting drive member 232 is arranged on the baffle plate positioning bracket 231, the output end of the second lifting drive member 232 vertically upward (along the Z direction) passes through the baffle plate positioning bracket 231, and the first baffle plate 233 is fixedly connected to the output end of the second lifting drive member 232 for lifting and lowering movement. The first baffle plate 233 is used for the initial positioning of the steel bar truss 100 and the bottom plate 200. When the steel bar truss 100 and the bottom plate 200 are transported forward, the second lifting drive member 232 drives the first baffle plate 233 to rise. When the steel bar truss 100 and the bottom plate 200 are transported to the first baffle plate 233, the end is blocked by the first baffle plate 233, and the initial position of the steel bar truss 100 and the bottom plate 200 is positioned. The initial position just makes the first welding point of the steel truss 100 and the bottom plate 200 located at the fixed welding position; after the positioning is completed, the second lifting drive member 232 drives the first baffle 233 to descend, and the welding device 4 starts welding, and the first baffle 233 does not affect the stepping conveyance of the steel truss 100 and the bottom plate 200. The second lifting drive member 232 is a linear drive mechanism such as a cylinder.

[0071] For some steel floor decks that require the end of the steel truss 100 to protrude from the bottom plate 200 for welding, the second baffle 234 is detachably mounted on the first baffle 233 in this embodiment, and the first baffle 233 and the second baffle 234 respectively abut the end surface of the steel truss 100 and the end surface of the bottom plate 200. The second baffle 234 is located on the side of the first baffle 233 facing the material direction of the steel truss 100 and the bottom plate 200. When the steel truss 100 and the bottom plate 200 are conveyed, the end of the bottom 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, and at this time, the end of the steel truss 100 protrudes from the end of the bottom plate 200. Of course, if the steel bar truss 100 is not required to protrude from the end of the bottom 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, which are arranged along the conveying direction (eg Figure 3 The positive direction of the X direction indicated by the middle arrow is the conveying direction of the steel bar truss 100 and the bottom plate 200 . The first stepping mechanism 31 and the second stepping mechanism 32 are respectively arranged at two ends of the welding device 4 and are both fixed on the frame 1 .

[0073] Among them, the first stepping mechanism 31 includes a first slide plate 311 and a first clamping mechanism 312. The first slide plate 311 is slidably installed on the frame 1 and is located upstream of the fixed welding position. The first clamping mechanism 312 is arranged on the first slide plate 311. The first clamping mechanism 312 is used to clamp and fix the steel truss 100 and the bottom plate 200. The first slide plate 311 can drive the steel truss 100 and the bottom plate 200 to step along the conveying direction; the second stepping mechanism 32 includes a second slide plate 321 and a second clamping mechanism 322. The second slide plate 321 is slidably installed on the frame 1 and is located downstream of the fixed welding position. The second clamping mechanism 322 is arranged on the second slide plate 321. The second clamping mechanism 322 is used to clamp and fix the steel truss 100 and the bottom plate 200. The second slide plate 321 can drive the steel truss 100 and the bottom plate 200 to step along the conveying direction. Due to the position relationship, the first slide plate 311 cannot clamp the steel bar truss 100 and the bottom plate 200 of the last step welding, so the last step welding of the steel bar truss 100 and the bottom plate 200 is achieved by clamping and stepping by the second slide plate 321.

[0074] In this embodiment, the movable welding assembly 42 is disposed on the first slide plate 311 for description.

[0075] like Figure 7 and Fig. 9 As shown, two groups of first clamping mechanisms 312 are provided on the first slide 311, and two groups of second clamping mechanisms 322 are provided on the second slide 321. The first clamping mechanisms 312 and the second clamping mechanisms 322 are respectively used to press and clamp the steel truss 100 and the base plate 200; the first stepping mechanism 31 is used for synchronously feeding the steel truss 100 and the base plate 200 from the first welding point to the second to last welding point, and the second stepping mechanism 32 is located downstream of the first stepping mechanism 31, and is used for synchronously feeding the steel truss 100 and the base plate 200 to the last welding 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 bottom plate 200, and then the first clamping mechanism 312 on the first stepping mechanism 31 will release the clamping of the steel truss 100 and the bottom plate 200 to prevent the steel truss 100 and the bottom plate 200 from being displaced by friction. Before the first stepping mechanism 31 prepares to step, the first clamping mechanism 312 on the first stepping mechanism 31 will first press and clamp the steel truss 100 and the bottom plate 200, and then the second clamping mechanism 322 on the second stepping mechanism 32 will release the pressure on the steel truss 100 and the bottom plate 200. That is, during the stepping and welding process of the steel truss 100 and the bottom plate 200, one of the first clamping mechanism 312 and the second clamping mechanism 322 will always press the steel truss 100 and the bottom plate 200 to ensure the welding effect of the steel truss 100 and the bottom plate 200.

[0076] Specifically, Figure 7 The first stepping mechanism 31 also includes a first stepping driving member 313, which is installed on the frame 1. The first slide plate 311 is slidably connected to the frame 1. The first stepping driving member 313 drives the first slide plate 311 to slide along a straight line relative to the frame 1. The first clamping mechanism 312 is installed on the first slide plate 311 and can move synchronously with the first slide plate 311. Through this structure, after the first clamping mechanism 312 presses and clamps the steel bar truss 100 and the bottom plate 200, the first stepping driving member 313 drives the first slide plate 311 to slide, and at the same time drives the first clamping mechanism 312 installed on the first slide plate 311 and the steel bar truss 100 and the bottom plate 200 pressed by the first clamping mechanism 312 to slide synchronously, so that the steel bar truss 100 and the bottom plate 200 synchronously step to the fixed welding position. During the stepping process, the mobile welding assembly 42 set on the first slide plate 311 performs welding operations.

[0077] In this embodiment, the first stepper drive member 313 is a motor, which is mounted on a motor bracket 314, which is mounted at the front end of the frame 1, and the output end of the motor can be connected to the first end of the ball screw 316 through a coupling 315. Screw support seats 3161 are provided on both sides of the motor bracket 314, the ball screw 316 is rotatably inserted into the screw support seat 3161, the second end of the ball screw 316 is threadedly connected to the stepper screw mother seat 3162, the stepper screw mother seat 3162 is fixedly connected to the first slide plate 311, and first sliders 3111 are provided at the bottom of both sides of the first slide plate 311, and 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, and the first slider 3111 is slidably provided on the first slide rail 3112. When the motor drives the ball screw 316 to rotate, the stepper screw base 3162 moves linearly relative to the ball screw 316, thereby driving the first slide plate 311 to move linearly. At this time, the first clamping mechanism 312 installed on the first slide plate 311 and 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 setting of the above-mentioned first slider 3111 and the first slide rail 3112 not only limits the rotational movement of the first slider 311 around the rotation axis of the ball screw 316, ensuring that the first slider 311 only moves 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 in the middle below the first slide 311, and the sliding components include 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 set on the frame 1, and the second slider 318 is slidably installed on the second slide rail 317. The second slider 318 is fixedly set on the bottom surface of the first slide 311. Since the mobile welding assembly 42 is installed on the first slide 311, the upper electrode mechanism 421 will generate impact force when welding downward. The second slide rail 317 is added to reduce the impact on the first slide 311. Preferably, as Figure 7 The first stepping 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 to roll and support the bottom plate 200, thereby reducing the friction between the bottom plate 200 and the first slide plate 311.

[0080] In this embodiment, the motor may be a servo motor, which has the advantages of being controllable and having high precision compared to ordinary motors, and has a fast response speed and can realize frequent forward and reverse rotation 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 understandable that the first step driving member 313 of the present embodiment may also be a cylinder, and the output end of the cylinder is drivingly connected to the first slide plate 311 to drive the first slide plate 311 to move.

[0082] like Fig. 9 As shown, the second stepping mechanism 32 further includes a second stepping driving member 323, wherein the second stepping driving member 323 is mounted on the frame 1, the second slide plate 321 is slidably connected to the frame 1, and the second stepping driving member 323 drives the second slide plate 321 to slide along a straight line 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. Through this structure, after the second clamping mechanism 322 presses and clamps the steel bar truss 100 and the bottom plate 200, the second stepping driving member 323 drives the second slide plate 321 to slide, and at the same time drives the second clamping mechanism 322 mounted on the second slide plate 321 and the steel bar truss 100 and the bottom plate 200 pressed by the second clamping mechanism 322 to step synchronously.

[0083] Exemplarily, the second stepping driving member 323 is a cylinder, which is mounted on a first cylinder seat 324, which is mounted on the rear end of the frame 1, and the output end of the cylinder is connected to a connecting shaft 326 through a fisheye bearing 325, the axis of the connecting shaft 326 is perpendicular to the axis of the output end of the cylinder, and the second slide 321 is fixed to the connecting shaft 326. The cylinder can be extended and retracted to drive the second slide 321 to move in a straight line.

[0084] Preferably, third sliders 3211 are provided on both sides of the bottom of the second slider 321 , the frame 1 is provided with third slide rails 3212 , the third slider 3211 slides on the third slide rails 3212 , and the third slide rails 3212 are parallel to the axis of the output end of the second stepping drive 323 .

[0085] The first stepping mechanism 31 and the second stepping mechanism 32 may adopt the same driving structure to respectively drive the first slide plate 311 and the second slide plate 321 to slide on the frame 1. Fig. 9 A second supporting roller 327 is rotatably disposed on the second slide plate 321 , and the second supporting roller 327 is used for rolling and supporting the bottom plate 200 to reduce the friction between the bottom 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, and the two first clamping mechanisms 312 are arranged on the first slide 311, and the two second clamping mechanisms 322 are arranged on the second slide 321. Taking the first clamping mechanism 312 arranged on the first slide 311 as an example, the first clamping mechanism 312 includes a clamping fixing seat 3121, a third lifting driving member 3122, an upper clamping plate 3123 and a lower clamping plate 3124. The clamping fixing seat 3121 is arranged on the first slide 311, and a guide shaft 3125 is arranged on the clamping fixing seat 3121; the third lifting driving member 3122 is arranged at the top end of the guide shaft 3125, and the third lifting driving member 3122 is arranged at the top end of the guide shaft 3125. The output end is arranged vertically downward; the upper clamping plate 3123 is arranged at the output end of the third lifting drive member 3122, and a clamping block 3126 is arranged on the lower surface of the upper clamping plate 3123; the lower clamping plate 3124 is arranged on the first slide plate 311, and the lower clamping plate 3124 is arranged opposite to the clamping block 3126. The third lifting drive member 3122 drives the clamping block 3126 to descend and clamp the steel truss 100 and the bottom plate 200 on the lower clamping plate 3124.

[0087] like Fig.10 In this embodiment, the third lifting drive member 3122 adopts a cylinder as an example, and the cylinder adopts a platen cylinder, which is installed on the clamping fixing seat 3121 through four guide shafts 3125 and two cylinder connecting plates 3127. The two clamping fixing seats 3121 are symmetrically arranged on the first slide plate 311, and the platen cylinder can drive the upper clamping plate 3123 to move up and down to press and lift, and the four guide shafts 3125 pass through the upper clamping 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 presses the steel truss 100 and the base plate 200, the steel truss positioning mechanism 21 simultaneously presses and positions the steel truss 100, and then by pressing 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 warping during the welding action.

[0089] In this embodiment, the welding device 4 includes two transformers, namely a first transformer 43 and a second transformer 44, the fixed welding component 41 includes four groups of upper electrode mechanisms 421 and two groups of lower electrode mechanisms 422 correspondingly arranged, and the mobile welding component 42 includes two groups of upper electrode mechanisms 421 and one group of lower electrode mechanisms 422 correspondingly arranged, wherein the two groups of upper electrode mechanisms 421 of the fixed welding component 41 and the two groups of upper electrode mechanisms 421 of the mobile welding component 42 are respectively connected to the two poles of the first transformer 43, and the other two groups of upper electrode mechanisms 421 of the fixed welding component 41 are respectively connected to the two poles of the second transformer 44. Among them, the fixed welding assembly 41 and the movable welding assembly 42 have the same composition structure, both including an upper electrode mechanism 421 and a lower electrode mechanism 422, but the installation positions are different. The fixed welding assembly 41 is fixedly installed on the frame 1 and is 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 311 and moves synchronously with the first slide 311. When the first clamping mechanism 312 on the first slide 311 drives the steel truss 100 and the base plate 200 to move in steps, 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 are described in detail below by taking the mobile 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 column 4213. The upper fixed seat 4211 of the fixed welding assembly 41 is arranged on the frame 1, and the upper fixed seat 4211 of the movable welding assembly 42 is arranged on the first slide plate 311; the fourth lifting drive member 4212 is arranged on the upper fixed seat 4211, and the output end of the fourth lifting drive member 4212 slides vertically downward and is arranged on the upper fixed seat 4211; the top end of the guide column 4213 is connected to the output end of the fourth lifting drive member 4212, and a connecting seat 4214 is arranged at the bottom end of the guide column 4213, an upper electrode seat 4215 is arranged on the connecting seat 4214, an electrode strip 4216 is arranged on the upper electrode seat 4215, and the connecting seat 4214 is electrically connected to the first transformer 43.

[0092] like Figure 8As shown, for the mobile welding assembly 42, the upper fixed seat 4211 of the upper electrode mechanism 421 is installed on the welding bracket 45, and the welding bracket 45 includes a supporting column 451, a supporting beam 452 and a dovetail frame 454, wherein the bottom end of the supporting column 451 is fixed on the first slide 311, and the two ends of the supporting beam 452 are respectively connected to the top ends of the two supporting columns 451, and the supporting beam 452 is a steel section. The dovetail frame 454 is installed in a sliding cooperation with the supporting beam 452 and can be locked at any position on the supporting beam 452. The upper fixed seat 4211 is fixedly connected to the dovetail frame 454 to realize the position adjustment of the upper electrode mechanism 421 in the Y direction, which is convenient for adjusting the initial position of the mobile welding assembly 42. Angle supports 453 are provided between the two ends of the supporting beam 452 and the supporting column 451, and the angle supports 453 improve the stability of the supporting beam 452 and the upper electrode mechanism 421. Taking the fourth lifting drive member 4212 using a cylinder as an example, as shown in Fig.11 The cylinder is fixed on the second cylinder seat 4217, the second cylinder seat 4217 is fixed on the top of the upper fixed seat 4211, the dovetail frame 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 frame 454 for installation, the top end of the guide column 4213 is passed through the upper fixed seat 4211 and connected to the output end of the cylinder, the bottom end of the guide column 4213 is connected to the connecting seat 4214, the output end of the cylinder drives the guide column 4213 to rise and fall, the guide column 4213 drives the connecting seat 4214 to move, and then 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 tops of the groove walls on both sides of the groove are provided with electrode blocks 4222. The two electrode blocks 4222 are respectively provided corresponding to the 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 Fig.12 As shown, the lower electrode seat 4221 adopts a groove structure to isolate the two electrode blocks 4222, and the tops of the two groove walls of the lower motor seat are provided with mounting grooves, in which the electrode blocks 4222 are fixedly set, and an insulating plate 4223 is set at the bottom end of the lower electrode seat 4221 to achieve the insulated installation of the lower electrode seat 4221 and the frame 1 or the feeding device 3.

[0095] In this embodiment, the upper electrode mechanism 421 has four sets of positions adjustable and arranged on the frame 1, and two sets of positions adjustable and arranged on the welding bracket 45 (or the first slide plate 311), so as to be applicable to the welding of steel bar trusses 100 of different specifications at different welding points. The above position adjustment refers to the initial position adjustment of the upper fixing seat 4211 along the Y direction. After the adjustment and positioning, it is no longer adjusted during the welding process.

[0096] In accordance with the upper electrode mechanism 421, three groups of lower electrode mechanisms 422 are provided, and each group of lower electrode mechanisms 422 is correspondingly provided below two groups of upper electrode mechanisms 421. Two groups of lower electrode mechanisms 422 are installed on the frame 1, and one group of lower electrode mechanisms 422 is correspondingly installed on the first slide 311 of the first stepping mechanism 31.

[0097] When it is necessary to weld the steel truss 100 and the base plate 200, the electrode strip 4216 of the upper electrode mechanism 421 moves downward to press the steel truss 100 and the base plate 200, so that the base plate 200 contacts the lower electrode block 4222, forming a bridge loop type closed loop, and a strong current with low voltage flows through the contact surface and adjacent areas of the steel truss 100 and the base plate 200. The resistance heat generated heats the contact part (that is, the welding point position) to a molten or plastic state for welding.

[0098] In this embodiment, in view of the situation of welding three steel trusses 100 on the base plate 200, two transformers are provided, namely the first transformer 43 and the second transformer 44. Among the four groups of upper electrode mechanisms 421 of the fixed welding assembly 41 on the frame 1, two groups are respectively connected to the two poles of the second transformer 44, and the other two groups of upper electrode mechanisms 421 and the two groups 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 floor slab welding machine provided by this embodiment, the bottom plate 200 and the steel truss 100 are first conveyed forward along the positive direction of the X direction, and the first baffle 233 of the end positioning mechanism 23 rises. When the steel truss 100 and the bottom plate 200 are conveyed to the first baffle 233, their ends will be abutted by the first baffle 233, and the initial positions of the steel truss 100 and the bottom plate 200 in the conveying direction are positioned; after the initial positioning is completed, the first baffle 233 retracts downward. In this process, the steel truss 100 and the bottom plate 200 will pass through two bottom plate positioning mechanisms 22 to position the bottom plate 200 in the width direction, and then the steel truss positioning mechanism 21 will accurately position the steel truss 100; at this time, the first stepping mechanism 31 is located near the side of the frame 1. At the same time, the upper electrode mechanism 421 of the fixed welding assembly 41 installed on the frame 1 and the movable welding assembly 42 installed on the first stepping mechanism 31 are both located in the same straight line.

[0100] After the preparation work is completed, first, the two sets of upper electrode mechanisms 421 of the mobile welding assembly 42 installed on the first stepping mechanism 31 are welded. After welding, the four sets of upper electrode mechanisms 421 installed on the frame 1 start to press down for welding. During the pressing process, the first stepping mechanism 31 starts to move away from the fixed welding position. When it moves to the farthest end, the fixed welding assembly 41 also completes the welding and lifts up.

[0101] Then, the two sets of first clamping mechanisms 312 installed on the first stepping mechanism 31 clamp the bottom plate 200 and the steel bar truss 100, and move toward the fixed welding position following the first stepping mechanism 31. The mobile welding assembly 42 installed on the first stepping mechanism 31 performs welding at the same time. Thus, alternating welding is achieved. The completion of welding means that the first stepping mechanism 31 is completed. The fixed welding assembly 41 installed on the frame 1 starts welding, and at the same time, the first clamping mechanism 312 on the first stepping mechanism 31 is lifted. The first stepping mechanism 31 moves away from the fixed welding position again, and at the same time, the second clamping mechanism 322 on the second stepping mechanism 32 clamps the bottom plate 200 to prevent the steel bar truss 100 and the bottom plate 200 from moving backward following the first stepping mechanism 31. This cycle repeats until the penultimate welding spot is completed. At this time, the first stepping mechanism 31 returns to its original position and cannot continue to feed the steel truss 100 and the bottom plate 200. The second stepping mechanism 32 feeds the steel truss 100 and the bottom plate 200, so that the remaining last welding spot is placed at the fixed welding assembly 41 to complete the welding. In the above welding process, the two transformers are alternately controlled, wherein the second transformer 44 controls the two groups of upper electrode mechanisms 421 to discharge successively, and one of the two groups of upper electrode mechanisms 421 follows the welding when feeding. Compared with the prior art using three transformers, this embodiment uses two transformers, which greatly reduces the impact of the transformer on the external power grid, improves construction efficiency and reduces construction costs.

[0102] The steel bar floor deck welding machine provided in the above embodiment taking the steel bar floor deck with six welding points as an example is also applicable to the welding of steel bar floor decks with twelve welding points or other numbers of welding points. According to the number of steel bar trusses 100 on the base plate 200 and the number of fixed welding assemblies 41, mobile welding assemblies 42 and transformers and the arrangement of transformers are set according to the principle of alternating welding, the goals of reducing the number of transformers and improving production efficiency can be achieved, which are not listed in this article.

[0103] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A steel bar floor deck welding machine, wherein the steel bar floor deck comprises a steel bar truss (100) and a bottom plate (200); characterized in that: The steel bar floor deck welding machine comprises: A frame (1), wherein a fixed welding position is provided on the frame (1); A positioning device (2), the positioning device (2) being arranged on the frame (1), and the positioning device (2) being used to position the steel bar truss (100) and the bottom plate (200); A feeding device (3), the feeding device (3) being slidably disposed on the frame (1), the feeding device (3) being used for synchronously stepping and conveying the positioned steel bar truss (100) and the bottom plate (200), wherein the conveying direction is the length direction of the steel bar floor deck; A welding device (4), the welding device (4) comprising a fixed welding assembly (41) and a movable welding assembly (42), the movable welding assembly (42) being arranged on the feeding device (3) and welding the steel bar truss (100) and the bottom plate (200) during the stepping process; the fixed welding assembly (41) being fixed on the frame (1) and welding the steel bar truss (100) and the bottom plate (200) which have stepped to the fixed welding position.

2. The steel bar floor deck welding machine according to claim 1, characterized in that: The positioning device (2) comprises: A bottom plate positioning mechanism (22), wherein two bottom plate positioning mechanisms (22) are provided, and the two bottom plate positioning mechanisms (22) are arranged at two ends of the fixed welding position along the conveying direction, and the bottom plate positioning mechanisms (22) can support the bottom plate (200) and abut against two sides of the bottom plate (200) along the conveying direction to limit the position; A steel bar truss positioning mechanism (21), the steel bar truss positioning mechanism (21) is located above the bottom plate positioning mechanism (22), the steel bar truss positioning mechanism (21) comprises a positioning block (214) and a first lifting drive member (213), the positioning block (214) is arranged 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 upward and downward, so that the positioning block (214) can position the steel bar truss (100) and press it onto the bottom plate (200).

3. The steel bar floor deck welding machine according to claim 2, characterized in that: The positioning device (2) further comprises an end positioning mechanism (23), wherein the end positioning mechanism (23) comprises a first baffle plate (233) and a second lifting drive member (232), wherein the second lifting drive member (232) is configured to drive the first baffle plate (233) to move upward and downward to position the end face of the steel bar truss (100) and / or the end face of the base plate (200).

4. The steel bar floor deck welding machine according to claim 3, characterized in that: The second baffle plate (234) is detachably mounted on the first baffle plate (233), and the first baffle plate (233) and the second baffle plate (234) respectively abut against the end surface of the steel bar truss (100) and the end surface of the bottom plate (200).

5. The steel bar floor deck welding machine according to claim 2, characterized in that: The bottom plate positioning mechanism (22) comprises: A roller seat (221), on which a plurality of conveying rollers (223) are rotatably mounted to support the bottom plate (200) in a rolling manner; A positioning member (222), wherein a plurality of the positioning members (222) are provided, and the plurality of positioning members (222) are all arranged on the roller seat (221) in an adjustable manner, and any two of the positioning members (222) arranged opposite to each other on both sides of the conveying direction can abut against both sides of the bottom plate (200) to limit the position.

6. The steel bar floor deck welding machine according to claim 2, characterized in that: The positioning blocks (214) are arranged corresponding to the steel bar trusses (100), and each of the positioning blocks (214) is provided with a V-shaped groove (2141), and the V-shaped groove (2141) is adapted to the connection position of the top reinforcement and the web reinforcement of the steel bar trusses (100).

7. The steel bar floor deck welding machine according to claim 1, characterized in that: The feeding device (3) comprises: A first stepping mechanism (31), the first stepping mechanism (31) comprising a first slide plate (311) and a first clamping mechanism (312), the first slide plate (311) being slidably mounted on the frame (1) and being located upstream of the fixed welding position, the first clamping mechanism (312) being arranged on the first slide plate (311), the first clamping mechanism (312) being used for clamping and fixing the steel bar truss (100) and the bottom plate (200), the first slide plate (311) being able to drive the steel bar truss (100) and the bottom plate (200) to move in a stepping manner along the conveying direction, and the movable welding assembly (42) being arranged on the first slide plate (311); A second stepping mechanism (32), the second stepping mechanism (32) comprises a second slide plate (321) and a second clamping mechanism (322), the second slide plate (321) is slidably mounted on the frame (1) and is located downstream of the fixed welding position, the second slide plate (321) is provided with the second clamping mechanism (322), the second clamping mechanism (322) is used to clamp and fix the steel truss (100) and the bottom plate (200), and the second slide plate (321) can drive the steel truss (100) and the bottom plate (200) to step along the conveying direction.

8. The steel bar floor deck welding machine according to claim 7, characterized in that: The first clamping mechanism (312) and the second clamping mechanism (322) both include: A clamping and fixing seat (3121), wherein the clamping and fixing seat (3121) is disposed on the first slide plate (311) or the second slide plate (321), and a guide shaft (3125) is disposed on the clamping and fixing seat (3121); A third lifting drive member (3122), wherein the third lifting drive member (3122) is disposed at the top end of the guide shaft (3125), and an output end of the third lifting drive member (3122) is disposed vertically downward; An upper pressing plate (3123), the upper pressing plate (3123) being arranged at the output end of the third lifting drive member (3122), and a pressing block (3126) being arranged on the lower surface of the upper pressing plate (3123); A lower clamping plate (3124), wherein the lower clamping plate (3124) is disposed on the first slide plate (311) or the second slide plate (321), and the lower clamping plate (3124) is disposed opposite to the clamping block (3126), and the third lifting drive member (3122) drives the clamping block (3126) to descend and clamp the steel truss (100) and the bottom plate (200) onto the lower clamping plate (3124).

9. The steel bar floor deck welding machine according to claim 7, characterized in that: The welding device (4) further comprises a first transformer (43) and a second transformer (44); the fixed welding assembly (41) comprises four groups of upper electrode mechanisms (421) and two groups of lower electrode mechanisms (422) arranged correspondingly thereto; the movable welding assembly (42) comprises two groups of upper electrode mechanisms (421) and one group of lower electrode mechanisms (422) arranged correspondingly thereto; wherein the two groups of upper electrode mechanisms (421) of the fixed welding assembly (41) and the two groups of upper electrode mechanisms (421) of the movable welding assembly (42) are both connected to the two poles of the first transformer (43) at the same time, and the other two groups of upper electrode mechanisms (421) of the fixed welding assembly (41) are both connected to the two poles of the second transformer (44).

10. The steel bar floor deck welding machine according to claim 9, characterized in that: The upper electrode mechanism (421) comprises: an upper fixed seat (4211), the upper fixed seat (4211) of the fixed welding assembly (41) being arranged on the frame (1), and the upper fixed seat (4211) of the movable welding assembly (42) being arranged on the first slide plate (311) or the second slide plate (321); A fourth lifting drive member (4212), wherein the fourth lifting drive member (4212) is disposed on the upper fixed seat (4211), and an output end of the fourth lifting drive member (4212) vertically slides downward and penetrates the upper fixed seat (4211); A guide column (4213), the top end of the guide column (4213) is connected to the output end of the fourth lifting drive member (4212), the bottom end of the guide column (4213) is provided with a connecting seat (4214), an upper electrode seat (4215) is provided on the connecting seat (4214), an electrode strip (4216) is provided on the upper electrode seat (4215), and the connecting seat (4214) is electrically connected to the first transformer (43) or the second transformer (44).

11. The steel bar floor deck welding machine according to claim 10, characterized in that: The lower electrode mechanism (422) comprises: A lower electrode seat (4221), wherein the lower electrode seat (4221) is provided with a groove; Electrode blocks (4222), the electrode blocks (4222) being arranged at the top of the groove walls on both sides of the groove, and the two electrode blocks (4222) are arranged corresponding to the two electrode strips (4216) respectively; An insulating plate (4223), wherein the 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) via the insulating plate (4223).

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