A steel bar butt welding device for building construction

Abstract

This invention discloses a butt welding device for steel bars used in building construction, belonging to the field of welding technology. It includes an operating table with two symmetrically fixed support blocks on its top wall, each support block having a preliminary clamping assembly. An installation plate is slidably installed on the top wall of the operating table, located between the two support blocks. A drive mechanism is provided on the operating table to drive the installation plate to reciprocate between the two support blocks. Two electric telescopic rods are vertically and symmetrically fixed on the top wall of the installation plate. This solution utilizes a brush, an upper clamp, and a lower clamp in cooperation. When butt welding steel bars at a construction site, firstly, the surface of the steel bar to be welded is cleaned with a brush to remove impurities. Then, the upper and lower clamps clamp the cleaned steel bar surface to achieve stable fixation. This fixing method effectively suppresses steel bar wobbling during welding, ensuring precise alignment of the two steel bars and keeping them in a straight line, thereby improving the overall welding quality and precision.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically, to a butt welding device for steel bars used in building construction. Background Technology

[0002] In building construction, when the length of a single reinforcing bar is insufficient, butt welding is often used to extend it to meet the length requirements of the structural design. One of the core quality requirements of this process is to ensure that the axes of the two reinforcing bars to be welded are precisely aligned. This ensures that the welded joint has a uniform stress distribution under subsequent stress, avoiding stress concentration and the risk of joint breakage due to misalignment.

[0003] However, achieving and maintaining high-precision alignment in actual construction site operations faces multiple challenges. First, conventional butt welding equipment relies heavily on manual visual inspection and adjustment for alignment, which is inefficient and difficult to guarantee accuracy. Second, construction site environments are complex, and the surface of reinforcing bars is easily contaminated with dirt, oil, oxide layers, and other impurities. If these impurities are not effectively removed before welding, they will seriously affect the electrical and thermal conductivity of the welding area, easily leading to defects such as incomplete fusion and slag inclusions (commonly known as "false welds"), severely weakening the joint strength.

[0004] Therefore, a steel bar butt welding device for building construction is proposed. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a steel bar butt welding device for building construction, which can improve the welding effect.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A steel bar butt welding device for building construction includes an operating table, on which two support blocks are symmetrically fixedly installed, and each support block is provided with a preliminary clamping component. An installation plate is slidably mounted on the top wall of the control panel. The installation plate is located between two support blocks, and the control panel is equipped with a drive mechanism for driving the installation plate to reciprocate between the two support blocks. Two electric telescopic rods are vertically and symmetrically fixed on the top wall of the mounting plate. The operating platform and the output end of each electric telescopic rod are equipped with a fixing mechanism for fixing the reinforcing bars. Two circular frames are vertically and symmetrically installed on the top wall of the mounting plate, and the two circular frames are symmetrically distributed on both sides of the electric telescopic rod. Furthermore, each ring frame has a brush fixedly installed on its inner wall.

[0008] Furthermore, the drive mechanism includes a motor fixedly mounted on the operating table, a reciprocating screw horizontally fixedly mounted on the output end of the motor, a slider threaded onto the reciprocating screw, a mounting plate fixedly sleeved on the outside of the slider, and the bottom wall of the slider fitting against the top wall of the operating table.

[0009] Furthermore, the fixing mechanism includes two gantry frames symmetrically fixedly installed on the top wall of the operating table, with the gantry frames located between two support blocks; Each gantry frame is fixedly installed with a spring telescopic rod on its bottom wall. A semi-circular upper sleeve is fixedly installed on the output end of the spring telescopic rod, with the opening of the upper sleeve facing downwards. A semi-circular lower sleeve is fixedly installed on the output end of the electric telescopic rod, with the opening of the lower sleeve facing upwards; The upper sleeve is made of magnetic material, and an electromagnet is fixedly embedded at the top of the lower sleeve. The electromagnet is connected in series with the electric telescopic rod, and when the electromagnet is energized, the adjacent ends of the upper sleeve and the electromagnet are opposite magnetic poles.

[0010] Furthermore, through holes are provided on the side walls of both support blocks, and the reciprocating screw is inserted into the through holes. A bellows is fitted onto the reciprocating lead screw, and the two ends of the bellows are fixedly connected to the side wall of the corresponding slider and the side wall of the support block, respectively.

[0011] Furthermore, a flow guide cavity is provided on the ring frame, and an air hole communicating with the flow guide cavity is provided on the inner ring side of the ring frame. An air supply mechanism for supplying air to the flow guide cavity is provided on the operating table.

[0012] Furthermore, the gas supply mechanism includes a pressurization chamber opened on the bellows, an intake valve and an exhaust valve are respectively embedded on the side wall of the pressurization chamber, a conduit extending into the flow guide chamber is fixedly installed on the output end of the exhaust valve, and a filter screen covering the surface of the intake valve input end is fixedly installed on the inner wall of the bellows.

[0013] Furthermore, an arc-shaped mounting groove is provided on the inner ring side of the lower sleeve, and an arc-shaped elastic pad is fixedly installed in the mounting groove. The elastic pad is made of a round tube of elastic material.

[0014] Furthermore, the elastic pad has a cavity, and the side wall of the cavity has holes that are evenly inclined downwards. Furthermore, the brush is made of metal.

[0015] Furthermore, the spring telescopic rod includes a sleeve, a spring, and a sliding rod; One end of the sleeve is open, and the sliding rod is slidably inserted into the open end of the sleeve; The two ends of the spring are fixedly connected to the inner end face of the sleeve and the end face of the slide rod, respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution uses a brush, an upper clamp, and a lower clamp in combination. When butt welding steel bars on a construction site, firstly, the surface of the steel bar to be welded is cleaned with a brush to remove impurities; then, the upper and lower clamps are used to clamp the cleaned steel bar surface to achieve a stable fixation. This fixing method can effectively suppress the shaking of the steel bars during the welding process, ensuring that the two steel bars are accurately aligned and in the same straight line, thereby improving the overall welding quality and precision.

[0017] (2) This solution uses a reciprocating screw and slider to drive the brush in linear reciprocating motion. This not only cleans the surface of the reinforcing steel efficiently, but also creates strip-shaped anti-slip patterns. These patterns can enhance the adhesion of the bonding surface during welding, thereby effectively improving the welding quality.

[0018] (3) In this design, the corrugated pipe and the air hole work together. During the movement of the slider, the corrugated pipe will be intermittently pressurized. During extrusion, the gas in the pressurized chamber is discharged into the guide chamber through the exhaust valve and the conduit, and finally ejected at high speed from the air hole on the side wall of the guide chamber. This airflow can directly blow away the surface of the steel bar, remove the impurities that have been brushed off, thereby keeping the welding area clean and ensuring that the upper and lower clamps can firmly hold the steel bar. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point C; Figure 6 This is a cross-sectional view of the lower ferrule of the present invention; Figure 7 This is a schematic diagram of the structure of the ring frame of the present invention.

[0020] Explanation of the labels in the diagram: 1. Operating table; 2. Support block; 201. Slot; 202. Elastic element; 3. Electric telescopic rod; 4. Ring frame; 5. Brush; 6. Motor; 7. Reciprocating screw; 8. Slider; 9. Gantry frame; 10. Spring telescopic rod; 1001. Sleeve; 1002. Spring; 1003. Slide rod; 11. Upper sleeve; 12. Lower sleeve; 13. Electromagnet; 14. Bellows; 15. Guide cavity; 16. Air hole; 17. Pressurization chamber; 18. Inlet valve; 19. Exhaust valve; 20. Guide tube; 21. Filter screen; 22. Elastic pad; 23. Cavity; 24. Hole; 25. Installation. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please see Figures 1 to 7 A steel bar butt welding device for building construction includes an operating table 1. Two support blocks 2 are symmetrically fixedly installed on the top wall of the operating table 1. Each support block 2 is provided with a preliminary clamping component. The preliminary clamping component includes a slot 201 opened on the top wall of the support block 2. An elastic pad 22 is fixedly installed on the side wall of the slot 201. First, place the two steel bars to be welded into the corresponding slots. At this time, the elastic pad 22 is squeezed and deformed, so that the steel bars can be initially fixed by the elastic force of the elastic pad 22. An installation plate 25 is slidably mounted on the top wall of the operating table 1. The installation plate 25 is located between two support blocks 2, and the operating table 1 is provided with a drive mechanism for driving the installation plate 25 to reciprocate between the two support blocks 2. Two electric telescopic rods 3 are vertically and symmetrically fixed on the top wall of the mounting plate 25. The operating table 1 and the output end of each electric telescopic rod 3 are equipped with a fixing mechanism for fixing the reinforcing bars. Two circular frames 4 are vertically and symmetrically arranged on the top wall of the mounting plate 25, and the two circular frames 4 are symmetrically distributed on both sides of the electric telescopic rod 3. Furthermore, each circular frame 4 has a brush 5 fixedly installed on its inner wall. The brush 5 is made of metal and is hard, which can more effectively remove stubborn impurities attached to the surface of the steel bars, thereby significantly improving the cleaning effect.

[0023] The drive mechanism includes a motor 6 fixedly mounted on the operating table 1. A reciprocating screw 7 is horizontally fixedly mounted on the output end of the motor 6. Through holes are provided on the side walls of the two support blocks 2, and the reciprocating screw 7 is rotatably inserted into the through holes. A bellows 14 is fitted onto the reciprocating lead screw 7, and the two ends of the bellows 14 are fixedly connected to the side wall of the corresponding slider 8 and the side wall of the support block 2, respectively.

[0024] Since the brush 5 causes impurities to fall off the surface of the steel bar during the brushing process, the corrugated pipe 14 sleeved on the outside of the reciprocating screw 7 can prevent impurities from falling to the connection between the reciprocating screw 7 and the slider 8, thereby preventing the slider 8 from getting stuck and ensuring that the slider 8 can move normally.

[0025] A rectangular slider 8 is threaded onto the reciprocating screw 7. The mounting plate 25 is fixedly sleeved on the outside of the slider 8, and the bottom wall of the slider 8 is in contact with the top wall of the operating table 1, thereby preventing the slider 8 from rotating around the reciprocating screw 7 and ensuring that the slider 8 can reciprocate along the reciprocating screw 7.

[0026] The fixing mechanism includes two gantry frames 9 symmetrically fixedly installed on the top wall of the operating table 1, with the gantry frames 9 located between two support blocks 2; Each gantry 9 has a spring telescopic rod 10 fixedly installed on its bottom wall. A semi-circular upper retaining sleeve 11 is fixedly installed on the output end of the spring telescopic rod 10, and the opening of the upper retaining sleeve 11 faces downward. The spring telescopic rod 10 includes a sleeve 1001, a spring 1002 and a slide rod 1003. One end of the sleeve 1001 is open, and the slide rod 1003 is slidably inserted into the open end of the sleeve 1001; The two ends of the spring 1002 are fixedly connected to the inner end face of the sleeve 1001 and the end face of the slide rod 1003, respectively. When the slide rod 1003 is not under force, the slide rod 1003 is in the state of retracting the sleeve 1001 under the action of the spring 1002. A semi-circular lower sleeve 12 is fixedly installed on the output end of the electric telescopic rod 3, with the opening of the lower sleeve 12 facing upward; The upper card sleeve 11 is made of magnetic material, and an electromagnet 13 is fixedly embedded at the top of the lower card sleeve 12. The electromagnet 13 is connected in series with the electric telescopic rod 3. When the electromagnet 13 is energized, the adjacent ends of the upper card sleeve 11 and the electromagnet 13 are opposite magnetic poles. When the upper card sleeve 11 and the lower card sleeve 12 are close to each other, they will attract each other.

[0027] Then, the motor 6 is started, which drives the reciprocating screw 7 to rotate, causing the slider 8 to reciprocate along the screw. At the same time, the reciprocating screw 7 drives the mounting plate 25 to move synchronously, causing the brush 5 fixed on the ring frame 4 to rub back and forth on the surface of the steel bar, thereby effectively removing impurities attached to the surface of the steel bar. In the prior art, some large waste recycling plants usually use electromagnets to separate some metal products from other materials. The ability of electromagnets to attract heavy items is existing technology and will not be elaborated further.

[0028] Initially, the electric telescopic rod 3 is in the retracted state, and the spring telescopic rod 10 is also in the retracted state.

[0029] After grinding is completed, the mounting plate 25 is reset, at which point the electric telescopic rod 3 is positioned below the corresponding spring telescopic rod 10. When the electric telescopic rod 3 is energized, a magnetic field is generated around the electromagnet 13. The output end of the electric telescopic rod 3 then moves the lower retaining sleeve 12 upwards until it grips the ground steel bar. Simultaneously, under the attraction of the electromagnet 13 to the upper retaining sleeve 11, the upper retaining sleeve 11 moves downwards and grips the top wall of the steel bar. At this point, the steel bar is fixed in place by the upper retaining sleeve 11 and the lower retaining sleeve 12, facilitating subsequent welding procedures.

[0030] Therefore, firstly, the surface of the reinforcing bar to be welded is cleaned with a brush 5 to remove impurities; then, the cleaned reinforcing bar surface is clamped using the upper clamp 11 and lower clamp 12 to achieve a stable fixation. This fixing method can effectively suppress the shaking of the reinforcing bar during the welding process, ensuring that the two reinforcing bars are precisely aligned and in a straight line, thereby improving the overall welding quality and precision.

[0031] like Figure 3 As shown, a flow guide cavity 15 is provided on the ring frame 4, and an air hole 16 communicating with the flow guide cavity 15 is provided on the inner ring side of the ring frame 4. An air supply mechanism for supplying air to the flow guide cavity 15 is provided on the operating table 1.

[0032] The gas supply mechanism includes a pressurization chamber 17 formed on the bellows 14. An intake valve 18 and an exhaust valve 19 are respectively embedded in the side wall of the pressurization chamber 17. The input end of the intake valve 18 is connected to the outside, and the input end of the exhaust valve 19 is connected to the pressurization chamber 17. A conduit 20 extending into the guide chamber 15 is fixedly installed on the output end of the exhaust valve 19. A filter screen 21 covering the surface of the input end of the intake valve 18 is fixedly installed on the inner wall of the bellows 14.

[0033] During the movement of slider 8, bellows 14 is intermittently compressed. During compression, gas in pressurized chamber 17 is discharged into guide chamber 15 through exhaust valve 19 and conduit 20, and finally ejected at high speed from air hole 16 on the side wall of guide chamber 15. This airflow can directly sweep the surface of the reinforcing bar, remove impurities washed off, thereby keeping the welding area clean and ensuring that the upper and lower clamping sleeves 12 can firmly hold the reinforcing bar.

[0034] With the help of the filter screen 21, when the air intake valve 18 draws air from the outside, it can filter the air that is drawn in, thereby improving the cleaning effect on the surface of the steel bars that have been polished.

[0035] like Figure 3 , Figure 5 As shown, the inner ring side of the lower sleeve 12 is provided with an arc-shaped mounting groove, and an arc-shaped elastic pad 22 is fixedly installed in the mounting groove. The elastic pad 22 is made of a round tube of elastic material.

[0036] The elastic pad 22 has a cavity 23, and the side wall of the cavity 23 has holes 24 that are evenly inclined downwards. When the ferrule approaches the rebar, the elastic pad 22 is gradually compressed. At this time, the gas in the cavity 23 is discharged through the hole 24 and blown onto the surface of the lower ferrule 12, thereby cleaning up any impurities that fall onto the surface of the lower ferrule 12. When the rebar enters the lower ferrule 12, it ensures that the lower ferrule 12 can hold the rebar tightly, improving the fixing effect of the rebar and ensuring that the rebar can be aligned.

[0037] Instructions for use: First, place the two steel bars to be welded into their respective clips. At this time, the elastic pad 22 is compressed and deformed, thus initially fixing the steel bars through the elastic force of the elastic pad 22. Then, start the motor 6, which drives the reciprocating screw 7 to rotate, causing the slider 8 to reciprocate along the screw. At the same time, the reciprocating screw 7 pushes the mounting plate (25) to move synchronously, causing the brush 5 fixed on the ring frame 4 to rub back and forth on the surface of the steel bars, thereby effectively removing impurities attached to the surface of the steel bars.

[0038] Initially, the electric telescopic rod 3 is in the retracted state, and the spring telescopic rod 10 is also in the retracted state.

[0039] After grinding is completed, the mounting plate (25) is reset, and the electric telescopic rod 3 is located below the corresponding spring telescopic rod 10. When the electric telescopic rod 3 is energized, a magnetic field is generated around the electromagnet 13. At this time, the output end of the electric telescopic rod 3 drives the lower clamping sleeve 12 to move upward until the lower clamping sleeve 12 clamps the steel bar whose surface has been ground. At the same time, under the attraction of the electromagnet 13 to the upper clamping sleeve 11, the upper clamping sleeve 11 moves downward and clamps the top wall of the steel bar. At this time, the steel bar can be fixed by the upper clamping sleeve 11 and the lower clamping sleeve 12. This facilitates the normal progress of subsequent welding procedures.

[0040] Therefore, firstly, use a brush 5 to clean the surface of the reinforcing bar to be welded, removing impurities; then, use the upper and lower clamps 12 to clamp the cleaned reinforcing bar surface to achieve a stable fixation. This fixing method can effectively suppress the shaking of the reinforcing bar during the welding process, ensuring that the two reinforcing bars are precisely aligned and in a straight line, thereby improving the overall welding quality and precision.

[0041] Since the brush 5 causes impurities to fall off the surface of the steel bar during the brushing process, the corrugated pipe 14 sleeved on the outside of the reciprocating screw 7 can prevent impurities from falling to the connection between the reciprocating screw 7 and the slider 8, thereby preventing the slider 8 from getting stuck and ensuring that the slider 8 can move normally.

[0042] During the movement of slider 8, bellows 14 is intermittently compressed. During compression, gas in pressurized chamber 17 is discharged into guide chamber 15 through exhaust valve 19 and conduit 20, and finally ejected at high speed from air hole 16 on the side wall of guide chamber 15. This airflow can directly sweep the surface of the reinforcing bar, remove impurities washed off, thereby keeping the welding area clean and ensuring that the upper and lower clamping sleeves 12 can firmly hold the reinforcing bar.

[0043] With the help of the filter screen 21, when the air intake valve 18 draws air from the outside, it can filter the air that is drawn in, thereby improving the cleaning effect on the surface of the steel bars that have been polished.

[0044] When the ferrule approaches the rebar, the elastic pad 22 is gradually compressed. At this time, the gas in the cavity 23 is discharged through the hole 24 and blown onto the surface of the lower ferrule 12, thereby cleaning up any impurities that fall onto the surface of the lower ferrule 12. When the rebar enters the lower ferrule 12, it ensures that the lower ferrule 12 can hold the rebar tightly, improving the fixing effect of the rebar and ensuring that the rebar can be aligned.

[0045] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A steel bar butt welding device for building construction, comprising an operating table (1), wherein two support blocks (2) are symmetrically fixedly installed on the top wall of the operating table (1), and each support block (2) is provided with a preliminary clamping component; Its features are: An mounting plate (25) is slidably mounted on the top wall of the operating table (1). The mounting plate (25) is located between two support blocks (2), and the operating table (1) is provided with a drive mechanism for driving the mounting plate (25) to reciprocate between the two support blocks (2). Two electric telescopic rods (3) are vertically and symmetrically fixed on the top wall of the mounting plate (25). The operating table (1) and the output end of each electric telescopic rod (3) are jointly provided with a fixing mechanism for fixing the reinforcing bars. Two circular frames (4) are vertically and symmetrically arranged on the top wall of the mounting plate (25), and the two circular frames (4) are symmetrically distributed on both sides of the electric telescopic rod (3); Furthermore, a brush (5) is fixedly installed on the inner wall of each of the aforementioned circular frames (4); The drive mechanism includes a motor (6) fixedly installed on the operating table (1), a reciprocating screw (7) is horizontally fixedly installed on the output end of the motor (6), a slider (8) is threaded on the reciprocating screw (7), the mounting plate (25) is fixedly sleeved on the outside of the slider (8), and the bottom wall of the slider (8) is in contact with the top wall of the operating table (1). The fixing mechanism includes two gantry frames (9) symmetrically fixedly installed on the top wall of the operating table (1), and the gantry frames (9) are located between two support blocks (2); A spring telescopic rod (10) is fixedly installed on the bottom wall of each of the gantry frames (9). A semi-circular upper sleeve (11) is fixedly installed on the output end of the spring telescopic rod (10), and the opening of the upper sleeve (11) is facing downward. A semi-circular lower sleeve (12) is fixedly installed on the output end of the electric telescopic rod (3), and the opening of the lower sleeve (12) faces upward; The upper sleeve (11) is made of magnetic material, and an electromagnet (13) is fixedly embedded at the top of the lower sleeve (12). The electromagnet (13) is connected in series with the electric telescopic rod (3), and when the electromagnet (13) is energized, the adjacent ends of the upper sleeve (11) and the electromagnet (13) are opposite magnetic poles. Both of the support blocks (2) have through holes on their side walls, and the reciprocating screw (7) is rotatably inserted into the through holes; A bellows tube (14) is fitted on the reciprocating screw (7), and the two ends of the bellows tube (14) are fixedly connected to the side wall of the corresponding slider (8) and the side wall of the support block (2), respectively. The circular frame (4) is provided with a flow guide cavity (15), and the inner ring side of the circular frame (4) is provided with an air hole (16) communicating with the flow guide cavity (15). The operating table (1) is provided with an air supply mechanism for supplying air to the flow guide cavity (15). The gas supply mechanism includes a pressurization chamber (17) opened on the bellows (14), an intake valve (18) and an exhaust valve (19) are respectively embedded on the side wall of the pressurization chamber (17), a conduit (20) extending into the guide chamber (15) is fixedly installed on the output end of the exhaust valve (19), and a filter screen (21) covering the surface of the input end of the intake valve (18) is fixedly installed on the inner wall of the bellows (14).

2. The steel bar butt welding device for building construction according to claim 1, characterized in that: The inner ring side of the lower sleeve (12) is provided with an arc-shaped mounting groove, and an arc-shaped elastic pad (22) is fixedly installed in the mounting groove. The elastic pad (22) is made of a round tube of elastic material.

3. The steel bar butt welding device for building construction according to claim 2, characterized in that: The elastic pad (22) has a cavity (23), and the side wall of the cavity (23) has holes (24) that are evenly inclined downward.

4. The steel bar butt welding device for building construction according to claim 3, characterized in that: The brush (5) is made of metal.

5. A steel bar butt welding device for building construction according to claim 4, characterized in that: The spring telescopic rod (10) includes a sleeve (1001), a spring (1002), and a slide rod (1003). One end of the sleeve (1001) is open, and the slide rod (1003) is slidably inserted into the open end of the sleeve (1001); The two ends of the spring (1002) are fixedly connected to the inner end face of the sleeve (1001) and the end face of the slide rod (1003), respectively.

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