Steel bar butt welding device for building construction

Through the reinforcement welding device designed with a combination of servo motors, hydraulic chambers and gears, stable clamping and fixed-point welding are achieved, solving the problem that the rotation of the steel bar affects the welding effect, improving the welding quality and enhancing the protection and cleaning capabilities.

CN120395075APending Publication Date: 2025-08-01JIANGSU HUIGU JIANGGONG NEW BUILDING MATERIALS CO LTD
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Patent Information

Application Number
CN202510870441.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-26
Publication Date
2025-08-01

AI Technical Summary

Technical Problem

The problem that the steel bar welding device affects the welding effect when rotating the steel bars during existing construction.

Method used

The combined design of servo motor, hydraulic compartment, gears, chains and resistance welding guns is adopted to achieve stable clamping and fixed-point welding of steel bars, avoid rotating steel bars, combine hydraulic devices and protective plates to prevent steel bars from falling, and clean welding slag by cleaning components.

Benefits of technology

It improves the effect of steel bar welding, enhances the protection and cleaning capabilities of the device, making welding more stable and easy to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a reinforcing steel bar butt welding device for building construction, and relates to the technical field of reinforcing steel bar welding butt joint. The steel bar butt welding device for building construction comprises a base, the top of the base is slidably connected with a movable clamping seat driven by an electric telescopic rod, a fixed clamping seat is assembled on the top of the base, and a through gear ring is rotationally connected into the base. According to the reinforcing steel bar butt welding device for building construction, one section of reinforcing steel bar is fixed on the fixed clamping seat, and the other section of reinforcing steel bar is arranged between the two clamping plates; through cooperation with a servo motor, a first hydraulic bin, a second gear, a stress rod, a push rod, a first spring, a transmission rod, a power block, a rotating rod, a transmission mechanism, a transmission sleeve, a stress block, a first chain wheel, a chain, a second chain wheel, a first bevel gear, a second bevel gear, a third gear and a first gear, the reinforcing steel bar can be stably clamped, and the periphery of the reinforcing steel bar does not need to be subjected to fixed-point welding by rotating the reinforcing steel bar; and the welding effect of the device is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of steel bar butt welding, and specifically relates to a steel bar butt welding device for building construction. Background Art

[0002] In building construction, steel bars, as one of the main structural materials, are widely used for the reinforcement and support of concrete structures. In the process of steel bar processing and connection, the steel bar butt welding device plays a crucial role. Traditional steel bar connection methods mainly include binding, mechanical connection, welding, etc., and steel bar welding is an important method among them.

[0003] However, when the existing steel bar butt welding device for building construction is in use, first, the two steel bars to be welded are fixedly clamped, and the steel bars are moved to the designated position, then the welding torch is started to perform corresponding welding operations on the two steel bars, and by rotating the steel bars, the welding of each surface of the steel bars is made uniform. However, in the process of rotating the steel bars, there is a problem that the rotation of the steel bars affects their own welding effect. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a steel bar butt welding device for building construction, which solves the problems raised in the above background art. To achieve the above objectives, the present invention is realized through the following technical solutions: A steel bar butt welding device for building construction, including a base, a movable clamp seat driven by an electric telescopic rod is slidably connected to the top of the base, a fixed clamp seat is assembled on the top of the base, a through gear ring is rotatably connected to the inside of the base, a resistance welding torch driven by an electric telescopic rod is assembled inside the gear ring, the movable clamp seat includes a movable seat, a through threaded rod is rotatably connected to the inside of the movable seat, a sliding plate is assembled on the outer side of the threaded rod, and a clamping plate is assembled on the side of the sliding plate; A welding assembly is provided on the base. The welding assembly includes a servo motor and a first hydraulic chamber. A first gear and a first sprocket are respectively drivingly connected to the side of the servo motor. A second gear is fixedly connected to the side of the threaded rod. A force-bearing rod is slidably connected to one end of the first hydraulic chamber. A push rod is slidably connected to the other end of the first hydraulic chamber. A first spring is assembled at one end of the push rod. The other end of the push rod is rotatably connected to a transmission rod. A power block is fixedly connected to the outside of the transmission rod. A through rotating rod is rotatably connected to the inside of the base. Transmission mechanisms are assembled on the side of the base and the side of the rotating rod. The transmission mechanism includes a transmission sleeve. A force-bearing block is fixedly connected to the inner wall of the transmission sleeve. A chain is assembled on the outside of the first sprocket. A second sprocket is assembled on the outside of the transmission sleeve. A first bevel gear is fixedly connected to the side of the rotating rod. A second bevel gear is rotatably connected to the inside of the base. The second bevel gear meshes with the first bevel gear. A third gear is drivingly connected to the side of the second bevel gear. The third gear meshes with the toothed ring.

[0005] Preferably, the end of the first spring away from the push rod is assembled inside the first hydraulic chamber.

[0006] Preferably, the end of the chain away from the first sprocket is assembled at the outside position of the second sprocket.

[0007] Preferably, a protection assembly is provided on the side of the clamping plate. The protection assembly includes a hydraulic device. One end of the hydraulic device is slidably connected to a first connecting rod. The first connecting rod is fixedly connected to the push rod. The other end of the hydraulic device is slidably connected to an arc-shaped rod. A rotating shaft is rotatably connected to the bottom of the clamping plate. A protection plate is fixedly connected to the outside of the rotating shaft.

[0008] Preferably, the hydraulic device is composed of two sections of rigid hydraulic chambers and one section of hydraulic hose.

[0009] Preferably, the protection plate is located at the side position of the arc-shaped rod and is in contact with the arc-shaped rod.

[0010] Preferably, a cleaning assembly is provided on the top of the base. The cleaning assembly includes a second hydraulic chamber. One end of the second hydraulic chamber is slidably connected to a second connecting rod. The second connecting rod is fixedly connected to the first connecting rod. The other end of the second hydraulic chamber is slidably connected to a cleaning brush. A collection bin is assembled inside the base.

[0011] Preferably, the cleaning brush is located at the bottom position of the base.

[0012] The present invention provides a steel bar butt welding device for building construction. It has the following beneficial effects: (1) For the steel bar butt welding device in building construction, one section of the steel bar is fixed on the fixed clamp seat, and the other section of the steel bar is placed between two clamping plates. Cooperating with the servo motor, hydraulic chamber 1, gear 2, stress rod, push rod, spring 1, transmission rod, power block, rotating rod, transmission mechanism, transmission sleeve, stress block, sprocket 1, chain, sprocket 2, bevel gear 1, bevel gear 2, gear 3, and gear 1, the steel bar can be stably clamped, and there is no need to rotate the steel bar to perform fixed-point welding on its periphery, improving the welding effect of the device.

[0013] (2) For the steel bar butt welding device in building construction, when the push rod moves, cooperating with the hydraulic device, connecting rod 1, arc rod, and rotating shaft, the protective plates on both sides are respectively rotated to the bottom position of the steel bar, preventing the steel bar from falling off the movable clamp seat when welding the top of the steel bar, improving the protective effect of the device on the steel bar.

[0014] (3) For the steel bar butt welding device in building construction, after the welding operation is completed, cooperating with hydraulic chamber 2 and connecting rod 2, the reset cleaning brush clears the part of the welding slag located on the top of the base into the collection bin, improving the cleaning effect of the device and making the device easier to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the overall appearance of the present invention; Figure 2 It is a three-dimensional structure schematic diagram of the overall cross-section of the present invention; Figure 3 It is a three-dimensional structure schematic diagram of the welding assembly of the present invention; Figure 4 It is a three-dimensional structure schematic diagram of some parts of the present invention; Figure 5 It is a three-dimensional structure schematic diagram of some parts of the present invention; Figure 6 It is a three-dimensional structure schematic diagram of some parts of the present invention; Figure 7 It is a three-dimensional structure schematic diagram of the protection assembly of the present invention; Figure 8 For the present invention Figure 7 Enlarged structure schematic diagram at A in; Figure 9 It is a three-dimensional structure schematic diagram of the cleaning assembly of the present invention; Figure 10 For the present invention Figure 9 Enlarged structure schematic diagram at B in.

[0016] In the figure: 100, Base; 200, Movable clamping seat; 201, Movable seat; 202, Threaded rod; 203, Sliding plate; 204, Clamping plate; 300, Fixed clamping seat; 400, Gear ring; 500, Resistance welding gun; 600, Welding assembly; 601, Servo motor; 602, Hydraulic chamber 1; 603, Gear 2; 604, Force-bearing rod; 605, Push rod; 606, Spring 1; 607, Transmission rod; 608, Power block; 609, Rotating rod; 610, Transmission mechanism; 6101, Transmission sleeve; 6102, Force-bearing block; 611, Sprocket 1; 612, Chain; 613, Sprocket 2; 614, Bevel gear 1; 615, Bevel gear 2; 616, Gear 3; 617, Gear 1; 700, Protection assembly; 701, Hydraulic device; 702, Connecting rod 1; 703, Arc-shaped rod; 704, Rotating shaft; 705, Protection plate; 800, Cleaning assembly; 801, Hydraulic chamber 2; 802, Connecting rod 2; 803, Cleaning brush; 804, Collection bin. Specific implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in 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.

[0018] Embodiment 1

[0019] Please refer to Figures 1-6 , a steel bar butt welding device for building construction, including a base 100. A movable clamping seat 200 driven by an electric telescopic rod is slidably connected to the top of the base 100. A fixed clamping seat 300 is assembled on the top of the base 100. A through gear ring 400 is rotatably connected to the inside of the base 100. A resistance welding gun 500 driven by an electric telescopic rod is assembled inside the gear ring 400. The movable clamping seat 200 includes a movable seat 201. A through threaded rod 202 is rotatably connected to the inside of the movable seat 201. A sliding plate 203 is assembled on the outside of the threaded rod 202. A clamping plate 204 is assembled on the side of the sliding plate 203; A welding assembly 600 is provided on the base 100. The welding assembly 600 includes a servo motor 601 and a first hydraulic chamber 602. A first gear 617 and a first sprocket 611 are respectively connected to the side of the servo motor 601 in a transmission manner. A second gear 603 is fixedly connected to the side of the threaded rod 202. Fix a section of steel bar on the fixed clamp seat 300, place another section of steel bar between the two clamping plates 204, start the servo motor 601, and make it drive the first gear 617 connected to it in a transmission manner to rotate counterclockwise. The first gear 617 then drives the second gear 603 meshing with it to rotate clockwise, so that the second gear 603 drives the threaded rod 202 fixedly connected to it to rotate. The two sliding plates 203 assembled on the threaded rod 202 move towards each other, making the two clamping plates 204 move towards each other to stably clamp the steel bar at this position, and then turn off the servo motor 601 after stable clamping.

[0020] A force-bearing rod 604 is slidably connected to one end of the first hydraulic chamber 602, and a push rod 605 is slidably connected to the other end of the first hydraulic chamber 602. After the steel bar is stably clamped, start the electric telescopic rod to drive the movable clamp seat 200 to move towards the fixed clamp seat 300. At this time, the second gear 603 moves away from the first gear 617, so that the servo motor 601 can no longer drive the clamping plate 204 to move. After moving the steel bar to the designated position, the movable seat 201 can squeeze the force-bearing rod 604, and cooperate with the first hydraulic chamber 602 slidably connected to the force-bearing rod 604, so that the pressure in the first hydraulic chamber 602 increases, driving the push rod 605 slidably connected to the first hydraulic chamber 602 to move.

[0021] A first spring 606 is assembled at one end of the push rod 605. The end of the first spring 606 away from the push rod 605 is assembled inside the first hydraulic chamber 602. The other end of the push rod 605 is rotatably connected to a transmission rod 607. A power block 608 is fixedly connected to the outside of the transmission rod 607. A through rotating rod 609 is rotatably connected to the inside of the base 100. Transmission mechanisms 610 are assembled on the side of the base 100 and the side of the rotating rod 609. The transmission mechanism 610 includes a transmission sleeve 6101, and a force-bearing block 6102 is fixedly connected to the inner wall of the transmission sleeve 6101. When the push rod 605 moves, the push rod 605 drives the transmission rod 607 rotatably connected to it to move, and the transmission rod 607 drives the power block 608 fixedly connected to it to move a certain distance to the side, so that the transmission rod 607 and the power block 608 move into the two transmission mechanisms 610.

[0022] A chain 612 is assembled on the outer side of the first sprocket 611, and a second sprocket 613 is assembled on the outer side of the transmission sleeve 6101. One end of the chain 612 away from the first sprocket 611 is assembled at the outer side position of the second sprocket 613. A first bevel gear 614 is fixedly connected to the side surface of the rotating rod 609. After the transmission rod 607 and the power block 608 move into the two transmission mechanisms 610, the servo motor 601 is started, so that the first sprocket 611 drivingly connected to the servo motor 601 rotates. Cooperating with the chain 612 assembled on the outer side of the first sprocket 611, the second sprocket 613 drivingly connected to the first sprocket 611 through the chain 612 rotates. The second sprocket 613 drives the transmission sleeve 6101 to rotate, so that the transmission sleeve 6101 drives the force-receiving block 6102 fixedly connected thereto to rotate. Cooperating with the transmission rod 607 and the power block 608 penetrating through the two transmission mechanisms 610, the rotating rod 609 is driven to rotate, so that the rotating rod 609 drives the first bevel gear 614 fixedly connected thereto to rotate.

[0023] A second bevel gear 615 is rotatably connected inside the base 100. The second bevel gear 615 meshes with the first bevel gear 614. A third gear 616 is drivingly connected to the side surface of the second bevel gear 615. The third gear 616 meshes with the gear ring 400. When the first bevel gear 614 rotates, the second bevel gear 615 meshing with it can be driven to rotate, so that the second bevel gear 615 drives the third gear 616 drivingly connected thereto to rotate. The third gear 616 drives the gear ring 400 meshing with it to rotate, thereby driving the resistance welding gun 500 driven by the electric telescopic rod on the gear ring 400 to rotate. After the resistance welding gun 500 is rotated to the specified position to be welded, the electric telescopic rod and the resistance welding gun 500 are started, and the corresponding fixed-point welding operation can be carried out, so that the device does not need to rotate the steel bar to perform fixed-point welding on its periphery, improving the welding effect of the device.

[0024] During use, fix a section of steel bar on the fixed clamp seat 300, place another section of steel bar between the two clamping plates 204, start the servo motor 601 to drive the first gear 617 connected to it by transmission to rotate counterclockwise. The first gear 617 then drives the second gear 603 meshing with it to rotate clockwise, causing the second gear 603 to drive the threaded rod 202 fixedly connected to it to rotate. The two sliding plates 203 assembled on the threaded rod 202 move towards each other, causing the two clamping plates 204 to move towards each other to stably clamp the steel bar at this position. Subsequently, start the electric telescopic rod to drive the movable clamp seat 200 to move towards the fixed clamp seat 300. At this time, the second gear 603 moves away from the first gear 617, making it impossible for the servo motor 601 to drive the clamping plate 204 to move anymore. After moving the steel bar to the designated position, the movable seat 201 can squeeze the stress rod 604, cooperate with the first hydraulic chamber 602 slidably connected to the stress rod 604, increase the pressure in the first hydraulic chamber 602, drive the push rod 605 slidably connected to the first hydraulic chamber 602 to move, cause the push rod 605 to drive the transmission rod 607 rotatably connected to it to move, and the transmission rod 607 drives the power block 608 fixedly connected to it to move a certain distance to the side, making the transmission rod 607 and the power block 608 move into the two transmission mechanisms 610. At this time, start the servo motor 601 again, make the first sprocket 611 connected to the servo motor 601 by transmission rotate, cooperate with the chain 612 assembled outside the first sprocket 611, make the second sprocket 613 connected to the first sprocket 611 by transmission through the chain 612 rotate, the second sprocket 613 drives the transmission sleeve 6101 to rotate, make the transmission sleeve 6101 drive the stress block 6102 fixedly connected to it to rotate, cooperate with the transmission rod 607 and the power block 608 passing through the two transmission mechanisms 610, thereby driving the rotating rod 609 to rotate, make the rotating rod 609 drive the first bevel gear 614 fixedly connected to it to rotate, the first bevel gear 614 drives the second bevel gear 615 meshing with it to rotate, make the second bevel gear 615 drive the third gear 616 connected to it by transmission to rotate, and the third gear 616 drives the gear ring 400 meshing with it to rotate, thereby driving the resistance welding gun 500 located on the gear ring 400 and driven by the electric telescopic rod to rotate. After rotating the resistance welding gun 500 to the designated position where welding is required, start the electric telescopic rod and the resistance welding gun 500 to perform the corresponding fixed-point welding operation.

[0025] Embodiment 2

[0026] Please refer to Figures 1-8, on the basis of Embodiment 1, a protection component 700 is provided on the side of the clamping plate 204. The protection component 700 includes a hydraulic device 701. The hydraulic device 701 is composed of two sections of rigid hydraulic chambers and one section of hydraulic hose. One end of the hydraulic device 701 is slidably connected with a first connecting rod 702, and the first connecting rod 702 is fixedly connected with the push rod 605. When the push rod 605 moves, it can drive the first connecting rod 702 fixedly connected thereto to move. In cooperation with the hydraulic device 701 slidably connected with the first connecting rod 702, the pressure in the hydraulic device 701 increases. The other end of the hydraulic device 701 is slidably connected with an arc-shaped rod 703. The bottom of the clamping plate 204 is rotatably connected with a rotating shaft 704, and a protection plate 705 is fixedly connected to the outside of the rotating shaft 704. The protection plate 705 is located on the side of the arc-shaped rod 703 and is in contact with the arc-shaped rod 703. When the pressure in the hydraulic device 701 increases, it drives the arc-shaped rod 703 slidably connected with the hydraulic device 701 to move. Also, because the bottom of the clamping plate 204 is rotatably connected with a rotating shaft 704, and a protection plate 705 is fixedly connected to the outside of the rotating shaft 704, the arc-shaped rod 703 squeezes the protection plate 705 and drives the protection plate 705 to rotate. The protection plate 705 then rotates to the bottom position of the steel bar, preventing the steel bar from falling off the movable clamping seat 200 when welding the top of the steel bar, and improving the protection effect of the device on the steel bar.

[0027] During use, on the basis of Embodiment 1, when the push rod 605 moves, it can drive the first connecting rod 702 fixedly connected thereto to move. In cooperation with the hydraulic device 701 slidably connected with the first connecting rod 702, the pressure in the hydraulic device 701 increases, driving the arc-shaped rod 703 slidably connected with the hydraulic device 701 to move. Also, because the bottom of the clamping plate 204 is rotatably connected with a rotating shaft 704, and a protection plate 705 is fixedly connected to the outside of the rotating shaft 704, the arc-shaped rod 703 squeezes the protection plate 705 and drives the protection plate 705 to rotate. The protection plate 705 then rotates to the bottom position of the steel bar.

[0028] Embodiment 3

[0029] Please refer to Figures 1-10, on the basis of the first and second embodiments, a cleaning component 800 is provided on the top of the base 100. The cleaning component 800 includes a second hydraulic chamber 801. One end of the second hydraulic chamber 801 is slidably connected to a second connecting rod 802, and the second connecting rod 802 is fixedly connected to the first connecting rod 702. When the first connecting rod 702 moves, it can drive the second connecting rod 802 fixedly connected thereto to move. Cooperating with the second hydraulic chamber 801 slidably connected to the second connecting rod 802, the pressure in the second hydraulic chamber 801 is reduced. The other end of the second hydraulic chamber 801 is slidably connected to a cleaning brush 803. The cleaning brush 803 is located at the bottom of the base 100. A collection bin 804 is assembled inside the base 100. When the pressure in the second hydraulic chamber 801 is reduced, it can drive the cleaning brush 803 slidably connected to the second hydraulic chamber 801 to move toward the side close to the movable clamping seat 200. Subsequently, the device performs welding. After the welding operation is completed, the movable clamping seat 200 resets. The push rod 605 can reset under the action of the first spring 606, so that the push rod 605 drives the second connecting rod 802 to reset through the first connecting rod 702. Similarly, the cleaning brush 803 is reset, so as to clean part of the welding slag located on the top of the base 100 into the collection bin 804 through the cleaning brush 803, improving the cleaning effect of the device and making the device easier to use.

[0030] During use, on the basis of the first and second embodiments, when the first connecting rod 702 moves, it can drive the second connecting rod 802 fixedly connected thereto to move. Cooperating with the second hydraulic chamber 801 slidably connected to the second connecting rod 802, the pressure in the second hydraulic chamber 801 is reduced, driving the cleaning brush 803 slidably connected to the second hydraulic chamber 801 to move toward the side close to the movable clamping seat 200. Subsequently, the device performs welding. After the welding operation is completed, the movable clamping seat 200 resets. The push rod 605 can reset under the action of the first spring 606, so that the push rod 605 drives the second connecting rod 802 to reset through the first connecting rod 702. Similarly, the cleaning brush 803 is reset, so as to clean part of the welding slag located on the top of the base 100 into the collection bin 804.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A steel bar butt welding device for building construction, comprising a base (100). A movable clamping seat (200) driven by an electric telescopic rod is slidably connected to the top of the base (100). A fixed clamping seat (300) is assembled on the top of the base (100). A through gear ring (400) is rotatably connected inside the base (100). A resistance welding gun (500) driven by an electric telescopic rod is assembled inside the gear ring (400). The movable clamping seat (200) includes a movable seat (201). A through threaded rod (202) is rotatably connected inside the movable seat (201). A sliding plate (203) is assembled on the outer side of the threaded rod (202). A clamping plate (204) is assembled on the side of the sliding plate (203). It is characterized in that: A welding assembly (600) is arranged on the base (100). The welding assembly (600) includes a servo motor (601) and a first hydraulic chamber (602). A first gear (617) and a first sprocket (611) are respectively drivingly connected to the side of the servo motor (601). A second gear (603) is fixedly connected to the side of the threaded rod (202). A force receiving rod (604) is slidably connected to one end of the first hydraulic chamber (602). A push rod (605) is slidably connected to the other end of the first hydraulic chamber (602). A first spring (606) is assembled at one end of the push rod (605). A transmission rod (607) is rotatably connected to the other end of the push rod (605). A power block (608) is fixedly connected to the outer side of the transmission rod (607). A through rotating rod (609) is rotatably connected inside the base (100). Transmission mechanisms (610) are assembled on the side of the base (100) and the side of the rotating rod (609). The transmission mechanism (610) includes a transmission sleeve (6101). A force receiving block (6102) is fixedly connected to the inner wall of the transmission sleeve (6101). A chain (612) is assembled on the outer side of the first sprocket (611). A second sprocket (613) is assembled on the outer side of the transmission sleeve (6101). A first bevel gear (614) is fixedly connected to the side of the rotating rod (609). A second bevel gear (615) is rotatably connected inside the base (100). The second bevel gear (615) meshes with the first bevel gear (614). A third gear (616) is drivingly connected to the side of the second bevel gear (615). The third gear (616) meshes with the gear ring (400).

2. The steel bar butt welding device for building construction according to claim 1, characterized in that: One end of the first spring (606) away from the push rod (605) is assembled inside the first hydraulic chamber (602).

3. A steel bar butt welding device for building construction according to claim 1, characterized in that: One end of the chain (612) away from the first sprocket (611) is assembled at the outer side position of the second sprocket (613).

4. A steel bar butt welding device for building construction according to claim 1, characterized in that: A protective component (700) is provided on the side of the clamping plate (204). The protective component (700) includes a hydraulic device (701). One end of the hydraulic device (701) is slidably connected to a first connecting rod (702), and the first connecting rod (702) is fixedly connected to the push rod (605). The other end of the hydraulic device (701) is slidably connected to an arc-shaped rod (703). A rotating shaft (704) is rotatably connected to the bottom of the clamping plate (204), and a protective plate (705) is fixedly connected to the outside of the rotating shaft (704).

5. The steel bar butt welding device for building construction according to claim 4, characterized in that: The hydraulic device (701) is composed of two sections of rigid hydraulic chambers and one section of hydraulic hose.

6. A steel bar butt welding device for building construction according to claim 4, characterized in that: The protective plate (705) is located on the side of the arc-shaped rod (703) and is in contact with the arc-shaped rod (703).

7. The steel bar butt welding device for building construction according to claim 1, wherein: A cleaning component (800) is provided on the top of the base (100). The cleaning component (800) includes a second hydraulic chamber (801). One end of the second hydraulic chamber (801) is slidably connected to a second connecting rod (802), and the second connecting rod (802) is fixedly connected to the first connecting rod (702). The other end of the second hydraulic chamber (801) is slidably connected to a cleaning brush (803). A collection bin (804) is assembled inside the base (100).

8. A steel bar butt welding device for building construction according to claim 7, characterized in that: The cleaning brush (803) is located at the bottom of the base (100).