Welding equipment for machining reinforcing steel bars in cement telegraph pole

Abstract

The invention relates to the technical field of reinforcement cage welding machines, in particular to welding equipment for machining reinforcing steel bars in cement telegraph poles, which comprises a sliding rail base, reinforcing steel bar head fixing seats and two welding assemblies, the reinforcing steel bar head fixing seats are distributed at two ends of the sliding rail base and used for mounting reinforcing steel bars, and the two welding assemblies are located in the middle of the upper part of the sliding rail base and used for welding the reinforcing steel bars. By adopting the two welding assemblies starting from the middle, the welding time can be shortened, meanwhile, the supporting effect is achieved in the middle of the reinforcing steel bar, correspondingly, along with work of the two resistance welding pieces in the welding assemblies, the welding process of the thin iron bar is rapidly completed, the welding time is shortened, and the thin iron bar conveying assembly is matched to assist in conveying the thin iron bar; and the supporting assembly provides a lower electrode for electric resistance welding, assists the movable welding assembly to fix the position of the reinforcing steel bar and also provides support for the welding process.

Description

Technical Field

[0001] This invention relates to the field of steel cage welding machine technology, and more specifically to a welding equipment for processing internal steel bars in cement utility poles. Background Technology

[0002] Cement utility poles are support poles for power lines. They are formed by molds or centrifugal equipment. In production, the welded steel cage is usually placed in the mold first, and then cement is poured. The mold can then be formed by high-temperature shaping or centrifugal equipment. The steel cage inside is composed of multiple steel bars and thin steel bars or wires wrapped around the outside of the steel bars. The thin steel bars on the outside of the steel bars need to be welded to the outside of the steel bars to fix the position and shape of the multiple steel bars.

[0003] A Chinese patent with application number CN202410781992.X discloses a welding device for processing internal steel bars in cement utility poles. The device includes a support and fixing unit, a displacement welding unit, and a lifting and pressing unit. The lifting and pressing unit allows the electric push rod to move the welding torch towards the welding point. Simultaneously, a synchronous plate on the electric push rod drives a swing rod and a swing plate to rotate. The rotation of the swing plate causes the limiting rod and pull plate on its surface to move upwards, which in turn causes the tension spring to stretch upwards. The tension spring causes the lifting plate to rotate. The lifting plate can reach the bottom of the steel bar and lifts the steel bar with an upward force, thus restoring bent steel bars for easier later use. After the lifting plate rotates, it can also cause the pressure rod and pressure plate to press downwards, pressing the stirrups downwards as a whole, ensuring a tight fit between the steel bar and the stirrups. This guarantees the structural strength of the weld and is suitable for widespread application.

[0004] The aforementioned patent proposes an improvement to address the potential bending of reinforcing bars during the welding process. In the prior art, the common welding method involves first fixing the reinforcing bar, then having a rotating part carry a thin steel wire that rotates and moves axially on the outside of the reinforcing bar, and performing resistance welding at the point of contact with the reinforcing bar. One end of the reinforcing bar is fixed, while the other end is driven, pulling the reinforcing bar to move. This method results in a spiral-shaped reinforcing bar hoop on the outside of the welded reinforcing cage. It is foreseeable that during the welding process, since only one end of the reinforcing bar is completely fixed, and the welding process requires pulling the reinforcing bar to move, the welding process heavily relies on the pressing component on the thin iron bar in conjunction with the rotating welding process, which may lead to a twisted reinforcing cage after welding. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a welding device for processing the internal steel bars of cement utility poles, which can effectively solve the problem of how to provide good support for the steel cage in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a welding device for processing internal steel bars in cement utility poles, including a slide rail base, a steel bar head fixing seat, and two welding components. The steel bar head fixing seat is distributed at both ends of the slide rail base for installing steel bars, and the two welding components are located in the upper middle part of the slide rail base and are in close contact with each other. The welding assembly includes a movable box and a movable trolley at the bottom of the movable box. The movable box has a hollow structure with a circular hole in the middle for the reinforcing bars to pass through. The movable trolley slides on a slide rail base. Two arc-shaped slide rails are symmetrically fixedly installed inside the inner side plate of the movable box. Elastic support seats are fixedly installed on the movable seats of the two arc-shaped slide rails. Resistance welding plates are fixedly connected to the ends of the elastic support seats, and the elastic support seats provide elastic support for the resistance welding plates. An electric push rod is fixedly installed inside the top plate of the movable box, and a resistance welding head is fixedly connected to the output end of the electric push rod.

[0007] Furthermore, the bottoms of the two mobile trolleys are rotatably connected to gears via a pivot shaft, and the gears mesh with racks on the slide rail base. The mobile box slides on the slide rail base through the rotation of the gears, and when thin iron strips are welded to the outside of the steel bars, the two mobile boxes move in opposite directions.

[0008] Furthermore, the movable box is circumferentially distributed with support components, which include inclined and circumferentially arranged electrode support bars. The electrode support bars are located inside the movable box and are used by the reinforcing bars to pass through and cooperate with the resistance welding sheet or resistance welding head to form a current path so as to weld the thin iron bars onto the reinforcing bars.

[0009] Furthermore, the electrode support strip has an arc-shaped groove for the reinforcing bar to pass through. The reinforcing bar can be snapped into the arc-shaped groove and can slide. A bracket is fixedly connected to the inner diameter of one side plate of the movable box. A connecting frame is connected to the bottom of the bracket. Two adjusting push rods are embedded and fixedly connected to the connecting frame. The two adjusting push rods are respectively fixedly connected to the bottom of both ends of the electrode support strip, and an insulating gasket is provided at the connection between the electrode support strip and the adjusting push rods.

[0010] Furthermore, the bracket and the connecting frame are connected by a common threaded bidirectional bolt, and a nut is fixedly connected to the middle of the bidirectional bolt. The threads of the upper and lower parts of the bidirectional bolt are opposite in direction, with the nut as the dividing point. The connecting frame includes a base plate for connecting the adjusting push rod and two side plates for limiting the left and right positions of the electrode support bar. The bracket and the connecting frame are both located in front of the resistance welding sheet and the resistance welding head.

[0011] Furthermore, a thin iron bar conveying assembly is fixedly installed on one side of the movable box. The thin iron bar conveying assembly includes a receiving box fixedly installed on one side of the movable box. Multiple thin iron bars of different lengths are placed inside the receiving box. A thin iron bar push rod is fixedly installed on the outside of the side plate of the receiving box. The output end of the thin iron bar push rod passes through the receiving box and extends into the receiving box.

[0012] Furthermore, two drive motors are fixedly installed on the side of the movable box, and drive wheels are fixedly connected to the output end of the drive motors. The movable box has a hole for a thin iron strip to pass through at the position between the two drive wheels, and the hole extends into the receiving box.

[0013] Furthermore, a telescopic contact wheel is fixedly installed on the movable seat of the arc-shaped slide rail, and the telescopic contact wheel is pressed against the thin iron strip by a spring.

[0014] Furthermore, the rebar head fixing seat is slidably installed at both ends of the slide rail base, and a self-locking push rod is fixedly connected between the rebar head fixing seat and the slide rail base. The continuous movement of the moving box moves the rebar head fixing seat to the two ends of the slide rail base, and separates the rebar cage from the rebar head fixing seat, and then the rebar cage is removed.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art: By employing two welding components originating from the middle, welding time can be shortened, while providing support in the middle of the reinforcing bar. Correspondingly, as the two resistance welding plates inside the welding components work, the welding process of the thin iron bar is completed quickly, shortening the welding time. In conjunction with the thin iron bar conveying component, it helps to transport the thin iron bar, and the support component provides the lower electrode for resistance welding while assisting the moving welding component to fix the position of the reinforcing bar, and also provides support for the welding process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the welding assembly of the present invention; Figure 3 This is a schematic diagram of the internal structure of the welding assembly of the present invention; Figure 4This is a schematic diagram of the internal structure of the welding assembly of the present invention; Figure 5 This is a schematic diagram of the support components of the present invention; Figure 6 This is a schematic diagram of the relevant structure of the connecting frame of the present invention.

[0018] The labels in the diagram represent: 1. Slide rail base; 2. Rebar head fixing seat; 3. Welding assembly; 301. Moving box; 302. Moving trolley; 303. Gear; 304. Arc-shaped slide rail; 305. Resistance welding sheet; 306. Elastic support seat; 307. Resistance welding head; 308. Electric push rod; 4. Thin iron bar conveying assembly; 401. Receiving box; 402. Thin iron bar push rod; 403. Drive motor; 404. Drive wheel; 405. Telescopic contact wheel; 406. Arc-shaped guide rail; 5. Support assembly; 501. Bracket; 502. Connecting frame; 503. Electrode support bar; 504. Adjusting push rod; 505. Two-way bolt; 506. Nut; 6. Non-locking push rod. Detailed Implementation

[0019] 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 clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0020] The present invention will be further described below with reference to embodiments.

[0021] Reference Figures 1 to 6 Example: A welding device for processing internal steel bars in cement utility poles includes a slide rail base 1, a steel bar head fixing seat 2, and two welding components 3. The steel bar head fixing seat 2 is distributed at both ends of the slide rail base 1 and is used to install steel bars. The two welding components 3 are located in the middle of the upper part of the slide rail base 1 and are closely attached to each other. Welding assembly 3 includes a movable housing 301 and a movable trolley 302 at the bottom of the movable housing 301. The movable housing 301 has a hollow structure with a circular hole in the middle for the reinforcing bars to pass through. The movable trolley 302 slides on the slide rail base 1. Two arc-shaped slide rails 304 are symmetrically fixedly installed inside the inner side plate of the movable housing 301. Elastic support seats 306 are fixedly installed on the movable seats of the two arc-shaped slide rails 304. Resistance welding plates 305 are fixedly connected to the ends of the elastic support seats 306. To provide elastic support for the resistance welding sheet 305, an electric push rod 308 is fixedly installed inside the top plate of the movable box 301. The output end of the electric push rod 308 is fixedly connected to the resistance welding head 307. The bottom of the two movable trolleys 302 is rotatably connected to the gear 303 through a rotating shaft. The gear 303 meshes with the rack on the slide rail base 1. The movable box 301 slides on the slide rail base 1 through the rotation of the gear 303. When welding thin iron strips on the outside of the steel bar, the two movable boxes 301 move in opposite directions.

[0022] Before pouring concrete for a utility pole, an internal reinforcing cage needs to be welded out. The reinforcing cage is then placed inside a steel mold, and concrete is poured in. After centrifugal and steam heating processes, the concrete utility pole is formed. The reinforcing cage provides stronger support for the pole. Before welding the reinforcing cage, the ends of the reinforcing bars need to be rolled up. The vertical reinforcing bars are then distributed circumferentially between two reinforcing bar head fixing seats 2. The rolled-up ends of the reinforcing bars are then secured between the two reinforcing bar head fixing seats 2. Next, thin iron bars are distributed on the outside of the reinforcing bars, and resistance welding plates 305 are used to weld the thin iron bars to the outside of the reinforcing bars to fix their positions, thus forming the reinforcing cage.

[0023] A motor-driven gear 303 is installed at the bottom of the movable housing 301. The gear 303 meshes with a rack on the slide rail base 1, and as the gear 303 rotates, it drives the movable housing 301 to move. During the welding process, the two movable housings 301 move in opposite directions, starting from the middle of the reinforcing bar and moving towards both ends, which shortens the welding time. Simultaneously, during the welding process, two resistance welding plates 305 perform welding work within one movable housing 301. Driven by an arc-shaped slide rail 304, the two resistance welding plates 305 weld the two sides of the circumference formed by the reinforcing bar, i.e., the two resistance welding plates 305 weld the semi-circular areas respectively. Finally, the resistance welding head 307 welds the ends of the thin iron strip. The two ends of the thin iron strip are welded together to form a complete circular shape. After two thin iron strips are completed simultaneously, the two moving boxes 301 move in opposite directions to perform the welding process of the next thin iron strip until the end of the steel bar is welded, thus completing the welding of the steel cage. That is, during the welding process, the thin iron strip is welded synchronously by two resistance welding plates 305, and the welding of two thin iron strips is performed at the same time. Compared with spiral welding of thin iron strips, the welding time can be shortened to a certain extent. Correspondingly, during the movement from the middle to both ends of the steel cage, the middle and both ends of the steel bar will be supported. Therefore, the steel bar will not sag from the middle during the welding process. There is no need to support the middle of the steel bar during the welding process, so the position of the steel bar is not easy to shake during the welding process.

[0024] Correspondingly, as the diameter of the cement pole changes, the elastic support seat 306 provides elastic support, the resistance welding plate 305 is close to the outside of the reinforcing bar, and the extension and retraction of the electric push rod 308 moves the resistance welding head 307 up and down, so that the resistance welding head 307 conforms to the position of the thin iron bar with a variable diameter. It should be noted that the thin iron bar needs to be cut to the required length in advance according to the change of the diameter of the cement pole to meet the welding requirements of the reinforcing cage.

[0025] Specifically, a support assembly 5 is distributed circumferentially inside the movable housing 301. The support assembly 5 includes inclined and circumferentially arranged electrode support bars 503. The electrode support bars 503 are located inside the movable housing 301. The electrode support bars 503 allow the reinforcing bars to pass through and cooperate with the resistance welding sheet 305 or the resistance welding head 307 to form a current path so as to weld the thin iron bar onto the reinforcing bar. The electrode support bars 503 have arc-shaped grooves for the reinforcing bars to pass through. The reinforcing bars can be snapped into the arc-shaped grooves and can slide. A bracket 501 is fixedly connected to the inner diameter of one side plate of the movable housing 301. A connecting frame 502 is connected to the bottom of the bracket 501. Two adjusting push rods 504 are embedded and fixedly connected in the connecting frame 502. The two adjusting push rods 504 are respectively fixedly connected to the bottom of both ends of the electrode support bars 503, and the connection between the electrode support bars 503 and the adjusting push rods 504 has an insulating gasket.

[0026] During the placement of the reinforcing bar, one end of the reinforcing bar needs to be inserted into the arc-shaped groove of the electrode support bar 503 first, and then pushed forward until it is near the reinforcing bar head fixing seat 2. Then, insert it into the reinforcing bar head fixing seat 2. Finally, insert the other end of the reinforcing bar into another reinforcing bar head fixing seat 2.

[0027] During the welding process, the adjusting push rod 504 on the connecting frame 502 slides continuously with the moving box 301 to adjust the position of the electrode support bar 503. One moving box 301 needs to move towards the larger end of the rebar cage, while the other moving box 301 moves towards the smaller end. Correspondingly, the inclination angle of the individual rebars in the rebar cage is different. However, the diameter of the rebar cage in the moving box 301 moving towards the larger end gradually increases. That is, the adjusting push rod 504 in this moving box 301 needs to push the electrode support bar 503 upward. From the observation angle of the electrode support bar 503, the two adjusting push rods 504 connected to the electrode support bar 503 push upward simultaneously, which can provide support for the rebar during the welding process. Correspondingly, it can also keep the current path between the rebar and the thin iron bar unobstructed during the resistance welding process, ensuring the welding effect. Conversely, when the other moving box 301 moves towards the smaller end of the rebar cage, the adjusting push rod 504 gradually retracts to assist in guiding the position of the rebar.

[0028] It is important to note that the insulating pad between the electrode support bar 503 and the adjusting push rod 504 is essential. This is to prevent the current from affecting the operation of the adjusting push rod 504 and to prevent the current path from being affected by other factors.

[0029] Specifically, the bracket 501 and the connecting frame 502 are connected by a common threaded double bolt 505. A nut 506 is fixedly connected to the middle of the double bolt 505. The double bolt 505 is divided by the nut 506, and the threads of the upper and lower parts are opposite. The connecting frame 502 includes a base plate for connecting the adjusting push rod 504 and two side plates for limiting the electrode support bar 503 at the left and right positions. The bracket 501 and the connecting frame 502 are both located in front of the resistance welding piece 305 and the resistance welding head 307.

[0030] The brackets 501 and connecting frames 502 on the movable housing 301 that moves to the right are located on the right side of the movable housing 301, and the brackets 501 and connecting frames 502 on the movable housing 301 that moves to the left are located on the left side of the movable housing 301. In short, the brackets 501 and connecting frames 502 need to be located in front of the welding positions of the resistance welding piece 305 and the resistance welding head 307. This is to avoid the movement of the movable housing 301 being obstructed by the brackets 501 and connecting frames 502 after the thin iron strip is welded on.

[0031] The two side plates of the connecting frame 502 clamp the position of the electrode support bar 503 to ensure that the electrode support bar 503 only moves radially. Correspondingly, the spring between the bracket 501 and the connecting frame 502 provides additional space for the movement of the electrode support bar 503. In the production of different models of cement poles, the taper of the cement poles is different, so the radial movement distance of the electrode support bar 503 is different. In order to make full use of the stroke of the adjusting push rod 504, it is inconvenient to use the adjusting push rod 504 to adjust the initial position of the electrode support bar 503. Therefore, it is necessary to adjust the distance between the bracket 501 and the connecting frame 502 to adjust the initial position of the electrode support bar 503.

[0032] Since the threads of the upper and lower parts of the bidirectional bolt 505 are opposite, and the threaded connection directions with the bracket 501 and the connecting frame 502 are also opposite, and since the bracket 501 and the connecting frame 502 are located above and below respectively, when the nut 506 is rotated, the bidirectional bolt 505 can move outward or inward simultaneously in the bracket 501 and the connecting frame 502, thereby adjusting the distance between the bracket 501 and the connecting frame 502 and adjusting the initial position of the electrode support bar 503 to adapt to the taper and central diameter of cement poles of different specifications. If the threads of the non-bidirectional bolt 505 are opposite and separated by the nut 506, then rotating the nut 506 can only adjust the position of the nut 506.

[0033] Specifically, a thin iron bar conveying assembly 4 is fixedly installed on one side of the movable housing 301. The thin iron bar conveying assembly 4 includes a receiving box 401 fixedly installed on one side of the movable housing 301. Multiple thin iron bars of different lengths are placed inside the receiving box 401. A thin iron bar push rod 402 is fixedly installed on the outside of the side plate of the receiving box 401. The output end of the thin iron bar push rod 402 passes through the receiving box 401 and extends into the receiving box 401. Two drive motors 403 are fixedly installed on the side of the movable housing 301. The output end of the drive motor 403 is fixedly connected to a drive wheel 404. A hole for the thin iron bar to pass through is opened in the movable housing 301 at the position between the two drive wheels 404, and the hole extends into the receiving box 401.

[0034] Specifically, a telescopic contact wheel 405 is also fixedly installed on the movable seat of the arc-shaped slide rail 304. The telescopic contact wheel 405 is pressed against the thin iron strip by a spring.

[0035] During welding, after one thin iron bar is welded, the thin iron bar push rod 402 pushes the vertically stacked thin iron bars in the receiving box 401 into the moving box 301. Then, using the rotation of the drive wheel 404, the thin iron bars are driven downwards towards the reinforcing bar. Guided by the telescopic contact wheel 405 and in contact with the resistance welding piece 305, the middle of the thin iron bar moves to the position between the two resistance welding pieces 305. At one end, the thin iron bar is guided upwards by the arc-shaped guide rail 406, helping the end of the thin iron bar to move upwards and form a circular state. When the ends of the thin iron bars meet at the top, they can be positioned below the resistance welding head 307, allowing the resistance welding head 307 to weld and fix the shape of the thin iron bar. Correspondingly, during the welding process of the resistance welding piece 305, the movement path of the resistance welding piece 305 is arc-shaped, extending... During the movement of the resistance welding piece 305, the telescopic contact wheel 405 contacts the thin iron strip first and presses it against the outside of the reinforcing bar. As the resistance welding piece 305 passes by, the thin iron strip has already deformed under the pressure of the telescopic contact wheel 405 and adheres to the outside of the reinforcing bar. When the resistance welding piece 305 approaches, it continues to press the thin iron strip under the elastic support of the elastic support seat 306, and then welds the thin iron strip onto the reinforcing bar. That is, during the welding process, the thin iron strip is pressed against the outside of the reinforcing bar by the telescopic contact wheel 405, so that the thin iron strip is tightly attached to and wrapped around the outside of the reinforcing bar. After being welded to the outside of the reinforcing bar in sequence, the end of the thin iron strip is wrapped around the top of the reinforcing bar in a circular shape, which helps the end of the thin iron strip to be welded by the resistance welding head 307 after welding and to adhere tightly to the outside of the reinforcing bar.

[0036] Specifically, the rebar head fixing seat 2 is slidably installed at both ends of the slide rail base 1, and a self-locking push rod 6 is fixedly connected between the rebar head fixing seat 2 and the slide rail base 1. The continuous movement of the moving box 301 moves the rebar head fixing seat 2 to the two ends of the slide rail base 1, and separates the rebar cage from the rebar head fixing seat 2, and then removes the rebar cage.

[0037] When unloading the welded steel cage, the movable box 301 needs to be moved continuously. The non-locking push rod 6 is in a de-energized and non-locking state. After being pushed outward by the movable box 301, the steel bar head is separated from the steel bar head fixing seat 2. This can be done manually or by relying solely on the pushing force of the movable box 301 pushing the steel bar head fixing seat 2. In this way, the steel cage will lose the restriction of the electrode support bar 503 and the steel bar head fixing seat 2, and can be lifted by the hook to the pouring position.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding device for processing the internal reinforcing steel of a cement pole, comprising a sliding rail base (1), a reinforcing steel head fixing seat (2) and two welding assemblies (3), the reinforcing steel head fixing seat (2) is distributed at both ends of the sliding rail base (1) and is used for mounting the two heads of the reinforcing steel, characterized in that, Two welding assemblies (3) are located above the middle of the slide rail base (1) and close to each other; The welding assembly (3) comprises a moving box (301) and a moving trolley (302) at the bottom of the moving box (301), the moving box (301) is a hollow structure, a circular hole for the steel bar to pass through is formed in the middle of the moving box (301), the moving trolley (302) slides on the slide rail base (1), two arc-shaped slide rails (304) are symmetrically and fixedly installed in the inner side plate of the moving box (301), an elastic support seat (306) is fixedly installed on the moving seat of the two arc-shaped slide rails (304), an electric resistance welding piece (305) is fixedly connected to the end of the elastic support seat (306), the elastic support seat (306) provides elastic support for the electric resistance welding piece (305), and an electric push rod (308) is fixedly installed in the top plate of the moving box (301). The output end of the electric push rod (308) is fixedly connected with an electric resistance welding head (307).

2. The welding apparatus for reinforcing bar processing inside a concrete utility pole according to claim 1, characterized by Two moving trolleys (302) are rotatably connected with gears (303) at the bottom, the gears (303) are meshed with the racks on the slide rail base (1), the moving box (301) slides on the slide rail base (1) through the rotation of the gears (303), and when the thin iron bar is welded outside the steel bar, the two moving boxes (301) move in opposite directions.

3. The welding apparatus for processing the internal reinforcing steel of a concrete utility pole according to claim 1, characterized by The moving box (301) is circumferentially provided with a support assembly (5), the support assembly (5) comprises inclined and circumferentially arranged electrode support strips (503), the electrode support strips (503) are located in the moving box (301), the electrode support strips (503) are used for the steel bar to pass through and cooperate with the electric resistance welding piece (305) or the electric resistance welding head (307) to form a current path, so as to weld the thin iron bar on the steel bar.

4. The welding apparatus for processing the internal reinforcing steel of a concrete utility pole according to claim 3, characterized by An arc-shaped groove for the steel bar to pass through is formed in the electrode support strip (503), the steel bar can be buckled in the arc-shaped groove and can slide, a support (501) is fixedly connected to the inner diameter of the side plate of the moving box (301), a connecting frame body (502) is connected to the bottom of the support (501), two adjusting push rods (504) are fixedly connected to the two ends of the electrode support strip (503) and are fixedly connected to the connecting frame body (502), and an insulating gasket is arranged at the connection between the electrode support strip (503) and the adjusting push rod (504).

5. The apparatus according to claim 4, wherein A bidirectional bolt (505) is threadedly and movably connected between the support (501) and the connecting frame body (502), a nut (506) is fixedly connected to the middle of the bidirectional bolt (505), the threads of the upper and lower parts of the bidirectional bolt (505) are opposite to each other with the nut (506) as a boundary, the connecting frame body (502) comprises a bottom plate for connecting the adjusting push rod (504) and two side plates for limiting the left and right positions of the electrode support strip (503), and the support (501) and the connecting frame body (502) are arranged in front of the electric resistance welding piece (305) and the electric resistance welding head (307).

6. The apparatus for welding of internal reinforcement of a concrete pole according to claim 1, characterized in that, The side of the moving box (301) is fixedly installed with a thin iron strip conveying assembly (4), the thin iron strip conveying assembly (4) comprises a containing box (401) fixedly installed on one side of the moving box (301), a plurality of thin iron strips with different lengths are placed in the containing box (401), a thin iron strip push rod (402) is fixedly installed outside the side plate of the containing box (401), and the output end of the thin iron strip push rod (402) penetrates through the containing box (401) and extends into the containing box (401).

7. The apparatus according to claim 6, wherein Two driving motors (403) are fixedly installed on the side edges of the moving box (301), the output ends of the driving motors (403) are fixedly connected with driving rotating wheels (404), the moving box (301) is provided with holes for the thin iron strips to pass through at positions corresponding to the two driving rotating wheels (404), and the holes extend into the containing box (401).

8. The apparatus according to claim 7, wherein The moving seat of the arc-shaped sliding rail (304) is further fixedly installed with a telescopic contact rotating wheel (405), and the telescopic contact rotating wheel (405) is pressed against the thin iron strip through a spring.

9. The welding apparatus for processing the internal reinforcing steel of a concrete utility pole according to any one of claims 5 or 8, characterized by, The reinforcing steel bar head fixing seat (2) is slidingly installed at the two end positions of the sliding rail base (1), a non-self-locking push rod (6) is fixedly connected between the reinforcing steel bar head fixing seat (2) and the sliding rail base (1), the continuous movement of the moving box (301) moves the reinforcing steel bar head fixing seat (2) to the two end positions of the sliding rail base (1), and the reinforcing steel cage is separated from the reinforcing steel bar head fixing seat (2), and then the reinforcing steel cage is taken away.

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