Keel welding device

Abstract

The invention provides a keel welding device, and belongs to the technical field of keel welding, the keel welding device comprises a placing frame, and the placing frame is provided with a sliding rail, a welding auxiliary unit and a compressed air cylinder; the welding auxiliary unit comprises a transverse fixing mechanism and a longitudinal fixing mechanism. The transverse fixing mechanism comprises a first driving part, a left clamping part and a right clamping part, wherein the left clamping part and the right clamping part are connected with the sliding rail in a sliding mode. The first driving part drives the left clamping part and the right clamping part to move oppositely or oppositely along the sliding rail. Fixing plates are connected to the left clamping part and the right clamping part in a sliding manner; a third driving part as well as a first air passage and a second air passage which are communicated with each other are arranged in the fixed plate; the side wall of the connecting piece can be quickly and tightly attached to the side wall of the keel rod piece, meanwhile, it is ensured that the end of the connecting piece abuts against the embedded base plate, and manual positioning and adjusting time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of keel welding, and particularly relates to a keel welding device. Background Art

[0002] As an important load-bearing part of the building appearance and function, the exterior curtain wall is a lightweight wall with a decorative effect commonly used in modern large-scale and high-rise buildings, usually composed of a panel and a support structure system; the keel system of the exterior curtain wall, like the "skeleton" of the building, supports the entire curtain wall structure and plays a decisive role in the stability, safety, and service life of the curtain wall.

[0003] The keel components of the exterior curtain wall are usually assembled and welded by keel bars of various specifications. After welding, these bars need to form a stable force-bearing structure to ensure that the curtain wall can withstand external forces such as wind loads and its own weight.

[0004] Referring to Figure 1 , in the existing exterior curtain wall keel welding process, during construction, the embedded base plate needs to be fixed to the wall surface through expansion bolts first as the basic support structure for keel installation. After using a hoisting device to hoist the keel components to the installation position, the lower part of the keel bar is fixed, and a connecting piece is installed on the keel bar using bolts to ensure that the side wall of the connecting piece fits with the side wall of the keel bar; subsequently, the end of the connecting piece is abutted against the embedded base plate fixed on the wall surface, and finally, workers perform welding operations on the part where the connecting piece abuts against the embedded base plate, so as to achieve the purpose of firmly fixing the keel bar to the wall surface; after the welding operation is completed, the slag remaining on the surface of the weld is cleaned, and after cleaning, the weld is subjected to a comprehensive anti-corrosion treatment to enhance the durability of the weld.

[0005] Referring to the Chinese patent document with the publication number CN118559303B, the publication date of December 27, 2024, and the name of a curtain wall keel splicing and welding device, before construction, the keel bar and the connecting piece are pre-assembled and welded on the ground using a welding device. By pressing down, the keel bar is slightly bent, so that the thermal deformation when the welding point of the keel bar heats up and expands can be stretched; after the pre-assembled welding is completed, the workpiece is hoisted to the corresponding position, and then the connecting piece is welded to the embedded base plate on the wall surface.

[0006] Referring to the above technical solution, since the length of the keel members is generally long, and due to the installation error of the embedded parts in the wall surface, the fitting degree of some parts of the connecting piece with the embedded base plate is not tight enough. At this time, it is necessary to manually adjust the position of the keel members to make the connecting piece fit as closely as possible with the embedded parts on the wall surface for subsequent welding. When manually adjusting the keel members, it is necessary to manually press the connecting piece to make it abut against the embedded part. The operation coordination is difficult, and it is easy to cause the position deviation of the keel members due to cooperation errors. Moreover, during manual operation, it is easy to cause positioning deviation due to visual errors or insufficient accuracy of measuring tools. When welding errors occur at multiple welding parts of the keel, it may cause uneven overall stress on the keel members, affecting the load-bearing effect of the final keel skeleton. Summary of the Invention

[0007] In view of this, the present invention provides a keel welding device for solving the problem that the overall stress of the keel members is uneven due to positioning errors during keel welding, affecting the load-bearing effect of the final keel skeleton.

[0008] To solve the above technical problems, the present invention provides a keel welding device, including a placement rack, on which a slide rail, a welding assistance unit and a compression air cylinder are provided; the welding assistance unit includes a horizontal fixing mechanism and a vertical fixing mechanism; the horizontal fixing mechanism includes a first driving part and a left clamping part and a right clamping part slidably connected to the slide rail, and the first driving part drives the left clamping part and the right clamping part to move away from or towards each other along the slide rail; a fixing plate is slidably connected to both the left clamping part and the right clamping part; a third driving part, a first air passage and a second air passage communicating with each other are arranged in the fixing plate; the second air passage is opened downward from the upper end surface of the fixing plate, and two L-shaped rods are slidably connected to both ends of the second air passage respectively, and an inner support plate is arranged on the corresponding end surface of the L-shaped rod; a third driving part is arranged in the fixing plate, and the third driving part drives the two L-shaped rods to move synchronously towards or away from each other; the vertical fixing mechanism includes a second driving part and a top plate arranged at the output end of the second driving part, and the top plate can abut against the end surface of the connecting piece away from the embedded base plate.

[0009] By adopting the above technical solution, when welding the keel is required, first place the placement rack at a suitable position on the ground or scaffold, place the connecting piece at the corresponding position of the fixed plate, and drive the two L-shaped rods to move away from each other through the third driving part, so that the two inner support plates respectively press against the corresponding surfaces of the connecting piece, thereby forming the clamping of the fixed plate on the connecting piece; the first driving part drives the left clamping part and the right clamping part to move towards each other, so that the side wall of the connecting piece is closely attached to the corresponding side wall of the keel member; after that, the second driving part drives the top plate to abut against the end face of the corresponding side of the connecting piece, so that the side of the connecting piece close to the embedded base plate is closely attached, thereby quickly positioning the keel member and the connecting piece, reducing the error during the welding of the keel member, improving the uniformity during the welding of the keel member, and making the overall force of the keel member more uniform; then the worker starts to weld the part where the connecting piece is attached to the embedded base plate. After the welding is completed, the connecting piece and the keel member are fixed by bolts.

[0010] Optionally, the third driving part includes a first piston disk slidably connected to the first air duct. One end of the first piston disk is provided with a first inclined block, and a first compression spring is arranged between the first inclined block and the bottom wall of the first air duct; a second inclined block adapted to the first inclined block is arranged at the inner end of the L-shaped rod.

[0011] Optionally, a pressure rod hole is formed in the fixed plate, and a pressure rod is slidably connected in the pressure rod hole; a fifth inclined block is further arranged on the first piston disk, and a sixth inclined block adapted to the fifth inclined block is arranged on the pressure rod; a vertical return spring is arranged between the L-shaped rod and the corresponding side surface of the fixed plate, and the elastic force of the vertical return spring drives the L-shaped rod to slide vertically towards the second inclined block direction, and the elastic force of the first compression spring is greater than the elastic force of the vertical return spring.

[0012] By the above technical solution, when it is necessary to separate the connecting piece from the fixed plate, the operator presses the pressure rod downward, the pressure rod drives the sixth inclined block to move downward, and converts the vertical horizontal movement of the pressure rod into the horizontal lateral movement of the first piston disk through the fifth inclined block, so that the first inclined block and the second inclined block no longer abut against each other. The vertical return spring on the L-shaped rod drives the corresponding L-shaped rod to move towards the first piston disk direction, and the inner support plate no longer contacts the connecting piece, thereby releasing the fixation of the connecting piece. When the operator finishes placing the connecting piece and then releases the pressure rod, at this time, the first compression spring drives the first piston disk to slide towards the side away from the embedded base plate. The first piston disk converts the horizontal lateral movement of the first piston disk into the opposite vertical movement of the two L-shaped rods through the first inclined block and the second inclined block, and makes the two inner support plates respectively contact and press against the corresponding surfaces of the connecting piece, thereby forming the clamping of the connecting piece.

[0013] Optionally, first air chambers are provided on both the left clamping part and the right clamping part; the first air chambers include cylindrical air cavities correspondingly arranged on the left clamping part and the right clamping part, the cylindrical air cavities are communicated with a compressed air cylinder through a first hose, and are communicated with a first air duct through a second hose, and an air valve is arranged on the first hose; a turbine is coaxially and rotatably connected in the cylindrical air cavity, a transmission rod is coaxially arranged on the end face of the turbine, and a flywheel is arranged on the transmission rod; a first articulated rod is arranged on the flywheel, and a second articulated rod is arranged on the fixed plate; the first articulated rod is articulated with a crankshaft, and the other end of the crankshaft is articulated with the second articulated rod; a sealing cover is arranged on the end face of the cylindrical air cavity, and a rotation hole adapted to the transmission rod is opened on the sealing cover.

[0014] Optionally, a third air duct communicated with the first air duct and a fourth air cavity communicated with the third air duct are arranged in the fixed plate; air outlet holes facing the embedded base plate are opened in the fourth air cavity.

[0015] By adopting the above technical solution, after welding is completed, the operator opens the air valve, the high-pressure gas in the compressed air cylinder enters the cylindrical air cavity through the first hose and drives the turbine to rotate; the rotating turbine drives the flywheel to rotate through the transmission rod, and converts the rotation of the flywheel into the reciprocating linear motion of the fixed plate through the crankshaft, so that the end of the fixed plate continuously knocks on the weld seam under the drive of the high-pressure gas, and the slag on the surface of the weld seam begins to fall off under the continuous knocking of the fixed plate; the high-pressure gas entering the first air duct enters the fourth air cavity through the third air duct, and then sprays onto the surface of the weld seam through the air outlet holes. The high-pressure gas cooperates with the reciprocating fixed plate, so that the slag on the surface of the weld seam falls off more thoroughly.

[0016] Optionally, the second driving part includes a second bracket arranged on the placing rack and a second nut arranged on the second bracket. The second driving part further includes a second lead screw adapted to the second nut; one end of the second lead screw is provided with a second connecting rod, and a second crank is fixedly arranged on the second connecting rod; the other end of the second lead screw is rotatably connected with a pressing disc, and the top plate is arranged on a side surface of the pressing disc opposite to the embedded base plate; a limiting hole is opened on the second bracket, and a limiting rod is slidably connected in the limiting hole; one end of the limiting rod is provided with a rotating sleeve and is rotatably connected with the second connecting rod through the rotating sleeve; the other end of the limiting rod is fixedly connected with the pressing disc.

[0017] Optionally, the first driving part includes a first bracket arranged on the placing rack and a first lead screw rotatably connected with the first bracket. Threads in opposite directions are respectively arranged at both ends of the circumferential wall of the first lead screw; lead screw nuts adapted to the corresponding threads are respectively arranged on the left clamping part and the right clamping part; a first crank is arranged at one end of the first lead screw.

[0018] By adopting the above technical solution, when it is necessary to make the side of the connecting piece closely adhere to the embedded base plate, the second crank is rotated to make the second lead screw rotate; the rotating second lead screw cooperates with the fixedly arranged second nut, so that the second lead screw can drive the abutting plate to perform linear motion; at this time, the second lead screw also rotates when performing linear motion. Since the limiting rod is rotationally connected to the second lead screw through the rotating sleeve, the limiting rod is rotationally connected to the abutting plate, and the abutting plate is fixedly connected to the limiting rod, the abutting plate will not rotate following the second lead screw due to the limitation of the limiting rod, thereby avoiding the rotation of the abutting plate from affecting the alignment of the connecting piece; the first lead screw enables the left clamping part and the right clamping part to synchronously move towards or away from each other through the lead screw threads with opposite directions arranged at both ends.

[0019] Optionally, a second piston adapted to the inner cavity of the compression cylinder is slidably connected in the compression cylinder. A third compression spring is arranged between the second piston and the bottom wall of the inner cavity of the compression cylinder. A third inclined block is arranged on the upper end surface of the second piston, and a fourth inclined block adapted to the third inclined block is arranged on the limiting rod.

[0020] Optionally, fifth air cavities are communicated with both the upper and lower ends of the fourth air cavity. A knocking block is slidably connected in the fifth air cavity. A knocking return spring is arranged between one end of the knocking block and the fifth air cavity.

[0021] Optionally, a sliding groove is formed in the fixing plate. A sliding plate is slidably connected in the sliding groove. A clamping plate is arranged on the side of the sliding plate facing the keel member; a sliding return spring is arranged between the corresponding end of the sliding plate and the sliding groove.

[0022] By adopting the above technical solution, when the second lead screw drives the abutting plate to move towards the connecting piece, the movement of the second lead screw can be converted into the downward movement of the second piston through the third inclined block and the fourth inclined block; since the air valve is in a closed state at this time, when the second piston presses down, the air in the compression cylinder cannot be discharged, and thus the second piston compresses the air in the compression cylinder; since the welding amounts required for connecting pieces of different specifications are different and the sizes of the welds are also different, the high-pressure gas enters the fourth air cavity and then enters the fifth air cavity. The high-pressure gas entering the fifth air cavity drives the knocking block to slide away from the fixing plate, thereby increasing the impact area of the fixing plate on the weld to adapt to the welds of connecting pieces of different specifications; through the arrangement of the sliding plate, the friction force received by the fixing plate during knocking can be reduced.

[0023] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. Through the coordinated operation of the horizontal fixing mechanism and the vertical fixing mechanism, the present invention can quickly make the side wall of the connecting piece closely fit with the side wall of the keel member, thereby quickly positioning the keel member and the connecting piece, reducing the error during the welding of the keel member, improving the unity during the welding of the keel member, making the overall force of the keel member more uniform, and at the same time ensuring that the end of the connecting piece abuts against the embedded base plate, reducing the manual positioning and adjustment time.

[0024] 2. After the welding is completed, the present invention uses the high-pressure gas provided by the compression air cylinder to drive the turbine to rotate, and drives the fixing plate to move reciprocally in a straight line, thereby making the fixing plate knock on the slag on the surface of the weld seam to make the slag fall off; the high-pressure gas can also spray from the air outlet holes towards the weld seam, cooperating with the knocking of the fixing plate, making the slag on the surface of the weld seam fall off more thoroughly, reducing the time required for manual cleaning of the slag on the surface of the weld seam.

[0025] 3. The present invention sets two L-shaped rods that can move synchronously towards or away from each other. Through the movement away from each other of the two L-shaped rods, the L-shaped rods tighten the connecting piece and fix the connecting piece on the fixing plate; at the same time, when the fixing plate knocks on the surface of the weld seam, the first piston disk is driven to move by the high-pressure gas, cooperating with the vertical return spring, so that the first inclined block no longer drives the two L-shaped rods to move away from each other through the second inclined block, and the inner support plate no longer contacts the connecting piece, avoiding the friction between the L-shaped rod and the connecting rod from interfering with the reciprocating movement of the fixing plate when the fixing plate knocks on the weld seam. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the keel in the prior art; Figure 2 It is a schematic structural diagram of a keel welding device of the present invention; Figure 3 It is a top view structural schematic diagram of the main components of the present invention; Figure 4 It is Figure 3 The sectional structural schematic diagram in the A-A direction in Figure 5 It is Figure 4 The enlarged structural schematic diagram of part C in Figure 6 It is Figure 3 The sectional structural schematic diagram in the B-B direction in Figure 7 It is a planar schematic diagram of the structure of the first piston disk and the pressure rod of the present invention.

[0027] Description of the reference numerals: 1, placement rack; 11, slide rail; 12, second bracket; 13, second lead screw; 14, abutting disc; 15, limiting rod; 16, rotating sleeve; 17, first bracket; 18, first lead screw; 2, compression air cylinder; 21, second piston; 22, third compression spring; 23, third inclined block; 24, fourth inclined block; 3, transverse fixing mechanism; 31, left clamping part; 32, right clamping part; 321, cylindrical air cavity; 322, turbine; 323, flywheel; 324, crankshaft; 325, sealing cover; 33, fixing plate; 331, clamping plate; 34, first air passage; 341, third air passage; 342, fourth air cavity; 343, air outlet; 345, knocking block; 35, second air passage; 37, L-shaped rod; 371, inner support plate; 372, vertical reset spring; 373, sixth inclined block; 38, pressing rod; 39, first piston disc; 391, first inclined block; 392, first compression spring; 393, second inclined block; 394, fifth inclined block; 4, longitudinal fixing mechanism; 41, top plate. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the Figures 2 - 7 of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0029] Referring to Figure 2 , this embodiment provides a keel welding device, including a placement rack 1, on which a slide rail 11, a welding assistance unit and a compression air cylinder 2 are arranged; the welding assistance unit includes a transverse fixing mechanism 3 and a longitudinal fixing mechanism 4; the transverse fixing mechanism 3 includes a first driving part and a left clamping part 31 and a right clamping part 32 that are slidably connected to the slide rail 11, and the first driving part drives the left clamping part 31 and the right clamping part 32 to move away from or towards each other along the slide rail 11; fixing plates 33 are slidably connected to both the left clamping part 31 and the right clamping part 32; a third driving part and a first air passage 34 and a second air passage 35 that communicate with each other are arranged in the fixing plate 33; the second air passage 35 is vertically penetrated and opened from the upper end surface of the fixing plate 33, and L-shaped rods 37 are slidably connected to both ends of the second air passage 35, and inner support plates 371 are arranged on the corresponding end surfaces of the L-shaped rods 37, and the third driving part drives the two L-shaped rods 37 to move synchronously towards or away from each other; The longitudinal fixing mechanism 4 includes a second driving part and a top plate 41 arranged at the output end of the second driving part, and the top plate 41 can abut against the end surface of the connecting member away from the embedded base plate; In this embodiment, when welding the keel is required, first place the placing rack 1 at the corresponding position on the scaffolding or the ground, then place the connecting piece on the fixing plate 33, and drive the two L-shaped rods 37 to move synchronously away from each other through the third driving part, so that the inner support plate 371 of the L-shaped rod 37 abuts against the corresponding position of the connecting piece, so as to clamp the connecting piece and thus fix the connecting piece to the fixing plate 33; After the connecting piece is clamped by the L-shaped rod 37, the first driving part drives the left clamping part 31 and the right clamping part 32 to move synchronously towards each other until the side wall of the connecting piece is closely attached to the side wall of the keel member; then, the second driving part drives the top plate 41 to move towards the side of the embedded base plate, and pushes the connecting piece to be closely attached to the corresponding surface of the embedded base plate through the top plate 41; then the worker starts to weld the part where the connecting piece is attached to the embedded base plate. After the welding is completed, the connecting piece and the keel member are fixed by bolts.

[0030] Refer to Figure 6 and Figure 7 In order to enable the L-shaped rods 37 to move synchronously away from each other to form a clamp on the connecting piece, in the present invention, the third driving part includes a first piston disk 39 slidably connected in the first air passage 34. One end of the first piston disk 39 is provided with a first inclined block 391, and a first compression spring 392 is arranged between the first inclined block 391 and the bottom wall of the first air passage 34; the inner end of the L-shaped rod 37 is provided with a second inclined block 393 adapted to the first inclined block 391; In this embodiment, when fixing the connecting piece is required, the first compression spring 392 drives the first piston disk 39 to slide away from the side of the embedded base plate, so that the first inclined block 391 abuts against the second inclined block 393, and converts the horizontal movement of the first piston disk 39 into the vertical horizontal movement of the L-shaped rod 37, thereby driving the two L-shaped rods 37 to move synchronously away from each other.

[0031] Refer to Figure 3 and Figure 5 In order to facilitate releasing the fixation of the L-shaped rod 37 after welding is completed, in the present invention, a pressure rod hole is formed in the fixing plate 33, and a pressure rod 38 is slidably connected in the pressure rod hole; a fifth inclined block 394 is further arranged on the first piston disk 39, and a sixth inclined block 373 adapted to the fifth inclined block 394 is arranged on the pressure rod 38; a vertical return spring 372 is arranged between the corresponding side surfaces of the L-shaped rod 37 and the fixing plate 33, and the elastic force of the vertical return spring 372 drives the L-shaped rod 37 to slide vertically towards the direction of the second inclined block 393, and the elastic force of the first compression spring 392 is greater than the elastic force of the vertical return spring 372; In this embodiment, when it is necessary to fix the connecting piece to the fixing plate 33, the operator presses the pressure rod 38. The pressure rod 38 drives the sixth inclined block 373 to move downward, causing the fifth inclined block 394 to drive the first piston disc 39 to slide toward the embedded substrate side. The first piston disc 39 simultaneously drives the first inclined block 391 to slide toward the embedded substrate side and compresses the first compression spring 392. The first inclined block 391 no longer abuts against the second inclined block 393, and the vertical return spring 372 drives the corresponding L-shaped rod 37 to slide toward the first piston disc 39. The operator places the connecting piece in the corresponding position and releases the pressure rod 38. The sixth inclined block 373 no longer drives the fifth inclined block 394 to slide toward the embedded substrate side. The first compression spring 392 drives the first piston disc 39 to slide away from the embedded substrate side. The first inclined block 391 drives the two L-shaped rods 37 to move away from each other through the second inclined block 393, thereby fixing the connecting piece to the fixing plate 33.

[0032] Refer to Figure 5 and Figure 6 In order to clean the molten slag on the surface of the weld after welding, in the present invention, first air chambers are provided on both the left clamping portion 31 and the right clamping portion 32. The first air chamber includes cylindrical air cavities 321 correspondingly provided on the left clamping portion 31 and the right clamping portion 32. One side of the cylindrical air cavity 321 is connected to the compressed air cylinder 2 through a first hose, and the other side is connected to the first air passage 34 through a second hose. An air valve is provided on the first hose. A turbine 322 is coaxially rotatably connected in the cylindrical air cavity 321. A transmission rod is coaxially provided on the end face of the turbine 322, and a flywheel 323 is provided on the transmission rod. A first articulated rod is provided on the flywheel 323, and a second articulated rod is provided on the fixing plate 33. The first articulated rod is articulated with a crankshaft 324, and the other end of the crankshaft 324 is articulated with the second articulated rod. A sealing cover 325 is provided on the end face of the cylindrical air cavity 321, and a rotation hole adapted to the transmission rod is opened on the sealing cover 325. In this embodiment, when the welding is completed, the air valve is opened. The high-pressure air in the compressed air cylinder 2 enters the cylindrical air cavity 321 through the first hose and drives the turbine 322 to rotate. Since the fixing plate 33 is slidably connected to the corresponding left clamping portion 31 or right clamping portion 32, the rotating turbine 322 converts the rotational motion of the turbine 322 into a reciprocating linear motion of the fixing plate 33 through the flywheel 323 and the crankshaft 324. The reciprocating linear motion of the fixing plate 33 continuously knocks on the surface of the weld, causing the molten slag on the surface of the weld to fall off.

[0033] Refer to Figure 6 In order to make the molten slag fall off more thoroughly, in the present invention, a third air passage 341 communicating with the first air passage 34 and a fourth air cavity 342 communicating with the third air passage 341 are provided in the fixing plate 33. An air outlet hole 343 facing the embedded substrate is opened in the fourth air cavity 342. In this embodiment, the high-pressure gas drives the turbine 322 to rotate. The turbine 322 converts the rotational motion into a reciprocating linear motion of the fixed plate 33 through the crankshaft 324, thereby forming a knock on the surface of the weld seam at the end of the fixed plate 33, and then causing the slag on the surface of the weld seam to fall off. Then, the high-pressure gas enters the first air duct 34 through the second hose. After entering the first air duct 34, it enters the fourth air cavity 342 through the third air duct 341, and finally is sprayed onto the weld seam through the air outlet hole 343. Under the continuous knocking of the end of the fixed plate 33 on the surface of the weld seam, in cooperation with the high-pressure gas sprayed out of the air outlet hole 343, the welding slag on the surface of the weld seam falls off more thoroughly.

[0034] Referring to Figure 2 , in the present invention, the second driving part includes a second bracket 12 arranged on the placement rack 1 and a second nut arranged on the second bracket 12. The second driving part is also provided with a second lead screw 13 adapted to the second nut. One end of the second lead screw 13 is provided with a second connecting rod, and a second crank is fixedly arranged on the second connecting rod. The other end of the second lead screw 13 is rotatably connected to a pressing plate 14, and the top plate 41 is arranged on a side of the pressing plate 14 opposite to the embedded base plate. A limiting hole is opened on the second bracket 12, and a limiting rod 15 is slidably connected in the limiting hole. One end of the limiting rod 15 is provided with a rotating sleeve 16 and is rotatably connected to the second connecting rod through the rotating sleeve 16. The other end of the limiting rod 15 is fixedly connected to the pressing plate 14; In this embodiment, after the transverse fixing mechanism 3 fixes the connecting piece and the keel member, the operator rotates the second crank, so that the second lead screw 13 moves toward the keel member side, and the connecting piece is pushed against the embedded base plate through the top plate 41 on the pressing plate 14. Due to the limitation of the limiting hole on the limiting rod 15 and the fact that one end of the pressing plate 14 is fixedly connected to the limiting rod 15, the pressing plate 14 will not rotate when the second lead screw 13 rotates.

[0035] Referring to Figure 2 , in the present invention, the first driving part includes a first bracket 17 arranged on the placement rack 1 and a first lead screw 18 rotatably connected to the first bracket 17. Threads in opposite directions are respectively arranged at both ends of the circumferential wall of the first lead screw 18. Lead screw nuts adapted to the corresponding threads are respectively arranged on the left clamping part 31 and the right clamping part 32. One end of the first lead screw 18 is provided with a first crank; In this embodiment, by rotating the first crank, the left clamping part 31 and the right clamping part 32 move away from or toward each other synchronously.

[0036] Referring to Figure 2 and Figure 4, in the present invention, a second piston 21 adapted to the inner cavity of the compression cylinder 2 is slidably connected in the compression cylinder 2. A third compression spring 22 is provided between the second piston 21 and the bottom wall of the inner cavity of the compression cylinder 2. A third inclined block 23 is provided on the upper end surface of the second piston 21, and a fourth inclined block 24 adapted to the third inclined block 23 is provided on the limiting rod 15; In this embodiment, when the second lead screw 13 moves towards the embedded base plate, the limiting rod 15 changes the longitudinal movement of the limiting rod 15 into the vertical downward movement of the second piston 21 through the fourth inclined block 24 and the third inclined block 23, so that the air in the compression cylinder 2 is compressed.

[0037] Refer to Figure 6 , since the weld lengths of different connectors are different, in order to further increase the impact area of the fixing plate 33 on the weld and make the slag on the weld surface fall off more completely, in the present invention, fifth air cavities are communicated with both the upper and lower ends of the fourth air cavity 342. A knocking block 345 is slidably connected in the fifth air cavity, and a knocking return spring is provided between one end of the knocking block 345 and the fifth air cavity; In this embodiment, when high-pressure gas is introduced into the fifth air cavity, the high-pressure gas drives the knocking block 345 to extend outwards; When the supply of high-pressure gas stops and reset is required, the knocking return spring drives the knocking block 345 to reset.

[0038] Refer to Figure 5 , in order to further improve the knocking effect of the fixing plate 33 on the weld surface and avoid mutual friction between the connector and the fixing plate 33 to hinder the movement of the fixing plate 33, in the present invention, a sliding groove is provided on the fixing plate 33. A sliding plate is slidably connected in the sliding groove, and a clamping plate 331 is provided on the side of the sliding plate facing the keel member; a sliding return spring is provided between the corresponding end of the sliding plate and the sliding groove; In this embodiment, through the arrangement of the clamping plate 331, the fixing block is attached to the connector through the clamping plate 331. After welding is completed, when the fixing plate 33 knocks on the weld, the clamping plate 331 can reduce the friction force received by the fixing plate 33, so that the knocking effect of the fixing plate 33 on the weld surface is better.

[0039] The implementation principle of an embodiment of a keel welding device according to the present invention is as follows: When welding is required, the operator first hoists the keel member to the corresponding position, fixes the bottom of the keel member to the ground, and then fixes the placing rack 1 to the corresponding position on the scaffolding or the ground; The operator presses the pressure rod 38, and the pressure rod 38 drives the sixth inclined block 373 to move downward, causing the fifth inclined block 394 to drive the first piston disc 39 to slide towards the embedded substrate side. The first piston disc 39 simultaneously drives the first inclined block 391 to slide towards the embedded substrate side and compresses the first compression spring 392; the first inclined block 391 no longer abuts against the second inclined block 393, and the vertical return spring 372 drives the L-shaped rod 37 to slide towards the second inclined block 393 direction, and the two L-shaped rods 37 move synchronously towards each other, facilitating the operator to place the connecting piece. The operator places the connecting piece in the corresponding position and releases the pressure rod 38. The sixth inclined block 373 without the pressing force no longer drives the fifth inclined block 394 to slide towards the embedded substrate side. The first compression spring 392 drives the first piston disc 39 to slide away from the embedded substrate side. The first inclined block 391 drives the two L-shaped rods 37 to move away from each other through the second inclined block 393, thereby fixing the connecting piece to the fixing plate 33. The operator rotates the first crank, causing the first lead screw 18 to drive the left clamping part 31 and the right clamping part 32 to drive the corresponding fixing plate 33 and the connecting piece to move towards each other until the side wall of the connecting piece is closely attached to the side wall of the keel member. The operator then rotates the second crank, causing the second lead screw 13 to move towards the keel member side, thereby pushing the connecting piece towards the embedded substrate direction through the top plate 41 on the abutting disc 14, making the corresponding surface of the connecting piece closely attached to the embedded substrate; due to the restriction of the limiting hole on the limiting rod 15, one end of the abutting disc 14 is fixedly connected to the limiting rod 15, and the rotation of the second lead screw 13 will not cause the abutting disc 14 to rotate. When the second lead screw 13 moves towards the embedded substrate, the limiting rod 15 changes the longitudinal movement of the limiting rod 15 into the vertical downward movement of the second piston 21 through the fourth inclined block 24 and the third inclined block 23, thereby compressing the air in the compression cylinder 2. When the side wall of the connecting piece is closely attached to the side wall of the keel member and at the same time ensures that the end of the connecting piece abuts against the embedded substrate, the operator starts to weld the part where the connecting piece abuts against the keel member. After the welding is completed, the operator opens the air valve. The high-pressure air in the compression cylinder 2 enters the cylindrical air cavity 321 through the first hose and drives the turbine 322 to rotate; the high-pressure air enters the first air duct 34 and pushes the first piston disc 39 to slide towards the embedded substrate side. The first inclined block 391 no longer abuts against the second inclined block 393, and the vertical return spring 372 drives the L-shaped rod 37 to slide towards the second inclined block 393 direction. The two L-shaped rods 37 move synchronously towards each other, and the inner support plate 371 no longer contacts the connecting piece. Since the fixed plate 33 is slidably connected to the corresponding left clamping part 31 or right clamping part 32, the rotational motion of the turbine 322 is converted into the reciprocating linear motion of the fixed plate 33 through the flywheel 323 and the crankshaft 324; the reciprocating linear motion of the fixed plate 33 continuously knocks on the surface of the weld, causing the slag on the surface of the weld to fall off; Due to the arrangement of the clamping plate 331, the fixed plate 33 is in contact with the connection through the clamping plate 331. After welding is completed, when the fixed plate 33 knocks on the weld, the clamping plate 331 can reduce the friction force received by the fixed plate 33, so that the knocking effect of the fixed plate 33 on the surface of the weld is better; Then, the high-pressure gas enters the first air passage 34 through the second hose. After entering the first air passage 34, it enters the fourth air chamber 342 through the third air passage 341, and finally sprays onto the weld through the air outlet hole 343; under the continuous knocking of the end of the fixed plate 33 on the surface of the weld, in cooperation with the high-pressure gas sprayed out from the air outlet hole 343, the slag on the surface of the weld falls off more thoroughly; After the cleaning is completed, the operator rotates the second crank, making the left clamping part 31 and the right clamping part 32 move away from each other. Then, the operator operates to release the fixing of the placement rack 1 and move the placement rack 1 away; then fix the two connectors to the metal rack with bolts and nuts.

Claims

1. A keel welding device, comprising a placement rack (1), characterized in that: A slide rail (11), a welding assisting unit, and a compressed air cylinder (2) are provided on the placement rack (1); the welding assisting unit includes a transverse fixing mechanism (3) and a longitudinal fixing mechanism (4); the transverse fixing mechanism (3) includes a first driving part, a left clamping part (31) and a right clamping part (32) which are slidably connected to the slide rail (11), and the first driving part drives the left clamping part (31) and the right clamping part (32) to move away from or towards each other along the slide rail (11); fixing plates (33) are slidably connected to both the left clamping part (31) and the right clamping part (32); a third driving part, a first air passage (34) and a second air passage (35) which are communicated with each other are arranged in the fixing plate (33); the second air passage (35) is vertically penetrated and opened from the upper end surface of the fixing plate (33), and L-shaped rods (37) are slidably connected to both ends of the second air passage (35), and inner support plates (371) are arranged on the corresponding end faces of the L-shaped rods (37); a third driving part is arranged in the fixing plate (33), and the third driving part drives the two L-shaped rods (37) to move synchronously towards or away from each other; The longitudinal fixing mechanism (4) includes a second driving part and a top plate (41) arranged at the output end of the second driving part, and the top plate (41) can abut against the end face of the connecting piece away from the embedded base plate.

2. The keel welding device according to claim 1, characterized in that: The third driving part includes a first piston disk (39) slidably connected to the first air passage (34), a first inclined block (391) is arranged at one end of the first piston disk (39), and a first compression spring (392) is arranged between the first inclined block (391) and the bottom wall of the first air passage (34); a second inclined block (393) adapted to the first inclined block (391) is arranged at the inner end of the L-shaped rod (37).

3. A keel welding device according to claim 2, characterized in that: A pressure rod hole is formed in the fixing plate (33), and a pressure rod (38) is slidably connected in the pressure rod hole; a fifth inclined block (394) is further arranged on the first piston disk (39), and a sixth inclined block (373) adapted to the fifth inclined block (394) is arranged on the pressure rod (38); a vertical return spring (372) is arranged between the L-shaped rod (37) and the corresponding side face of the fixing plate (33), and the elastic force of the vertical return spring (372) drives the L-shaped rod (37) to slide vertically towards the second inclined block (393), and the elastic force of the first compression spring (392) is greater than the elastic force of the vertical return spring (372).

4. A keel welding device according to claim 1, characterized in that: The left clamping part (31) and the right clamping part (32) are both provided with a first air chamber; the first air chamber includes cylindrical air cavities (321) correspondingly arranged on the left clamping part (31) and the right clamping part (32), which are communicated with the compressed air cylinder (2) through a first hose, and the cylindrical air cavity (321) is communicated with a first air duct (34) through a second hose, and an air valve is arranged on the first hose; a turbine (322) is coaxially and rotatably connected in the cylindrical air cavity (321), a transmission rod is coaxially arranged on the end face of the turbine (322), and a flywheel (323) is arranged on the transmission rod; a first articulated rod is arranged on the flywheel (323), and a second articulated rod is arranged on the fixed plate (33); the first articulated rod is articulated with a crankshaft (324), and the other end of the crankshaft (324) is articulated with the second articulated rod; a sealing cover (325) is arranged on the end face of the cylindrical air cavity (321), and a rotating hole adapted to the transmission rod is opened on the sealing cover (325).

5. The keel welding device according to claim 1, characterized in that: A third air duct (341) communicated with the first air duct (34) and a fourth air cavity (342) communicated with the third air duct (341) are arranged in the fixed plate (33); an air outlet hole (343) facing the embedded base plate is opened in the fourth air cavity (342).

6. The keel welding device according to claim 1, characterized in that: The second driving part includes a second bracket (12) arranged on the placing rack (1) and a second nut arranged on the second bracket (12), and the second driving part is further provided with a second lead screw (13) adapted to the second nut; a second connecting rod is arranged at one end of the second lead screw (13), and a second rocking handle is fixedly arranged on the second connecting rod; the other end of the second lead screw (13) is rotatably connected with a pressing disc (14), and the top plate (41) is arranged on a side of the pressing disc (14) opposite to the embedded base plate; a limiting hole is opened on the second bracket (12), and a limiting rod (15) is slidably connected in the limiting hole; a rotating sleeve (16) is arranged at one end of the limiting rod (15) and is rotatably connected with the second connecting rod through the rotating sleeve (16); the other end of the limiting rod (15) is fixedly connected with the pressing disc (14).

7. A keel welding device according to claim 1, characterized in that: The first driving part includes a first bracket (17) arranged on the placing rack (1) and a first lead screw (18) rotatably connected with the first bracket (17), and screw threads in opposite directions are respectively arranged at both ends of the peripheral wall of the first lead screw (18); lead screw nuts adapted to the corresponding screw threads are respectively arranged on the left clamping part (31) and the right clamping part (32); a first rocking handle is arranged at one end of the first lead screw (18).

8. The keel welding device according to claim 1, characterized in that: A second piston (21) adapted to the inner cavity of the compressed air cylinder (2) is slidably connected in the compressed air cylinder (2), a third compression spring (22) is arranged between the second piston (21) and the bottom wall of the inner cavity of the compressed air cylinder (2), a third inclined block (23) is arranged on the upper end face of the second piston (21), and a fourth inclined block (24) adapted to the third inclined block (23) is arranged on the limiting rod (15).

9. The keel welding device according to claim 5, characterized in that: Both the upper and lower ends of the fourth air chamber (342) are communicated with a fifth air chamber. A knocking block (345) is slidably connected in the fifth air chamber. A knocking return spring is arranged between one end of the knocking block (345) and the fifth air chamber.

10. A keel welding device according to claim 1, characterized in that: A sliding groove is formed in the fixing plate (33). A sliding plate is slidably connected in the sliding groove. A clamping plate (331) is arranged on the side of the sliding plate facing the keel member. A sliding return spring is arranged between the corresponding end of the sliding plate and the sliding groove.

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