A welding apparatus for steel pipe pole machining

Abstract

The present application relates to steel pipe pole welding processing technical field, specifically, it relates to a kind of welding equipment for steel pipe pole processing.It includes equipment ontology, connecting piece is used to provide support to welding structure, welding structure includes rotary welding mechanism, when the steel pipe pole needing welding is inserted in the outside of rotary welding mechanism, positioning mechanism can assist positioning to steel pipe welding;When rotary welding mechanism is welded to steel pipe pole, positioning mechanism is driven under rotary welding mechanism, can also promote the air discharge generated by welding.The present application can realize quick circle welding by rotary welding shaft driving welding rod, can make pipeline inner tube be heated more evenly in circumferential direction, improve the quality and uniformity of weld, combined with the friction plate and spade head installed in the end of positioning wall, can realize the effect of polishing and welding to pipeline inner wall, make weld surface more smooth, reduce stress concentration, improve the sealing and durability of welding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe pole welding processing, in particular to a welding equipment for steel pipe pole processing. BACKGROUND

[0002] In some specific scenarios, round short pipe conveying is used, such as in the gas conveying pipeline system of precision instruments. Due to the limitation of overall space layout and the requirement of specific gas transmission path, thick-walled short pipe type steel pipe poles are needed for connection. The short pipe connection needs to be strictly sealed to prevent gas leakage from affecting the normal operation of the instrument and the measurement accuracy. Due to the strict requirement of sealing in these scenarios, internal welding is usually used for short pipe connection.

[0003] Internal welding can improve the sealing performance of welding. The main reason is that internal welding can make the weld more uniform and continuous, reduce the irregular weld and porosity defects that may occur during external welding, effectively prevent gas or liquid leakage, and better control the shape and size of the molten pool during internal pipe welding, ensuring that the weld is tightly combined with the inner wall of the pipe and improving the sealing performance.

[0004] However, since it is welded inside the pipe, the thermal stress generated by welding is not easy to control. The high temperature during the welding process will cause thermal expansion of the pipe material, and it will shrink after cooling. This uneven thermal expansion and contraction will cause thermal stress. If the thermal stress cannot be effectively balanced, cracks may occur at the weld, thereby reducing the sealing performance. In addition, the gas generated by internal pipe welding has a relatively high temperature and is not easy to dissipate. If these gases are not easily discharged, on the one hand, it will affect the welding quality and easily cause defects such as porosity in the weld. On the other hand, the accumulation of high-temperature gas in the pipe will increase the internal pressure of the pipe and increase the risk of pipe rupture, further affecting the sealing performance and safety.

[0005] In view of this, a welding equipment for steel pipe pole processing is proposed. SUMMARY

[0006] The purpose of the present application is to provide a welding equipment for steel pipe pole processing to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides a welding equipment for steel pipe pole processing, which comprises a device body, the device body comprises a welding platform, the top of both sides of the welding platform is fixedly connected with a frame piece, and a welding chamber is formed between the two frame pieces and the welding platform. One end of the welding chamber is provided with a connecting piece, and the connecting piece is used to provide support for the welding structure.

[0008] The welding structure comprises a rotary welding mechanism for inner wall rotary welding of the pipeline, and a positioning mechanism movably connected to one side of the rotary welding mechanism away from the connecting piece; when the steel pipe rod to be welded is inserted outside the rotary welding mechanism, the positioning mechanism can assist in positioning the steel pipe rod.

[0009] One end of the positioning mechanism away from the rotary welding mechanism is fixedly connected with a pasting plate mechanism; when the rotary welding mechanism welds the steel pipe rod, the pasting plate mechanism can generate heat by friction at the symmetrical position of the welding point to balance the thermal stress in the welded pipeline; meanwhile, the positioning mechanism can also promote the discharge of the gas generated during welding under the driving of the rotary welding mechanism.

[0010] As a further improvement of the technical solution, the rotary welding mechanism comprises a bent pipe piece fixedly connected to the bottom of the connecting piece, a rotary welding shaft rotatably arranged in the bent pipe piece, and a welding rod movably connected to one end of the rotary welding shaft away from the bent pipe piece.

[0011] As a further improvement of the technical solution, the positioning mechanism comprises an adjusting bin arranged in the rotary welding shaft away from the bent pipe piece, two side plates fixedly connected in the adjusting bin, a middle cavity formed between the two side plates, the welding rod arranged in the middle cavity away from the bent pipe piece, a driving gear rotatably arranged in the middle cavity, and a micro motor coaxially connected with the driving gear and fixedly arranged on the surface of one of the side plates.

[0012] One end of the middle cavity away from the welding rod is slidably provided with a positioning arm, the positioning arm and the welding rod are arranged to protrude out of the surface of the rotary welding shaft, and the positioning arm and the welding rod are provided with tooth grooves at one end away from the driving gear, and the two tooth grooves are engaged with the driving gear.

[0013] As a further improvement of the technical solution, the pasting plate mechanism comprises a friction plate fixedly connected to the end of the positioning arm, the friction plate is arranged at one end of the positioning arm away from the welding rod, one end of the friction plate is fixedly connected with a shovel head, and the shovel head comprises a pasting shovel and a lifting shovel.

[0014] The pasting shovel is flush with one end of the friction plate away from the positioning arm, the lifting shovel is flush with one end of the friction plate close to the positioning arm, and the width of the lifting shovel is greater than that of the pasting shovel.

[0015] As a further improvement of the technical solution, the friction plate is fixedly connected with a push angle at one side close to the bent pipe piece, and the surface of the push angle is inclined.

[0016] As a further improvement of the technical solution, the two inner walls of the middle cavity are fixedly connected with two fixed rods, and the side of each of the four fixed rods close to the middle part of the middle cavity is fixedly connected with a clamping arm.

[0017] As a further improvement of the technical solution, the side of each of the four clamping arms away from the fixed rod is fixedly connected with an inner pad, and each of the four inner pads is made of elastic material with rough surface.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. In the welding equipment for steel pipe rod processing, when two short steel pipe rods need to be welded, one of the steel pipe rods is first sleeved on the surface of the rotary welding mechanism, and the interface of the steel pipe rod that needs to be welded is aligned with the welding rod, so that the positioning of the steel pipe rod is realized. When the two steel pipe rods are positioned and connected, the driving gear of the positioning mechanism is used to control the sliding of the positioning arm to the state of being attached to the inner wall of the steel pipe rod. At this time, there is a certain gap between the rotary welding shaft and the welding position, which can achieve the function of positioning the rotary welding shaft. At the same time, the attachment of the positioning arm to the inner wall of the steel pipe rod can provide support during the welding process, thereby achieving the effect of stress balance.

[0020] 2. In the welding equipment for steel pipe rod processing, the rotary welding shaft drives the welding rod to realize rapid rotation welding, which can make the inner pipe of the pipe more uniform in the circumferential direction, improve the quality and uniformity of the weld, and realize the effect of polishing and welding the inner wall of the pipe in combination with the friction plate and the shovel head installed at the end of the positioning wall, so that the weld surface is more smooth and smooth, the stress concentration is reduced, and the sealing and durability of the welding are improved.

[0021] 3. In the welding equipment for steel pipe rod processing, the positioning arm and the welding rod are symmetrically arranged, and under the driving of the rotary welding shaft, the positioning arm and the welding rod can quickly rotate in the interior of the pipe. The airflow disturbance generated by rotation helps to break the gas stagnation near the welding area, so that the gas generated during welding can flow more smoothly to the outlet of the pipe, thereby reducing the accumulation of harmful gas in the pipe during welding. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the present application;

[0023] Figure 2 It is the structure schematic diagram of A of the present application; Figure 1

[0024] Figure 3 It is the structure schematic diagram of the steel pipe rod welding state of the present application;

[0025] Figure 4 ​The welding process side view of the present application;

[0026] Figure 5 The welding rod position adjusting structure schematic diagram of the present application;

[0027] Figure 6 The rotary welding mechanism structure schematic diagram of the present application;

[0028] Figure 7 The adjusting bin cross section structure schematic diagram of the present application.

[0029] The meaning of each number in the figure is:

[0030] 1, the equipment body; 11, the frame piece; 12, the welding platform; 13, the welding bin; 14, the connecting piece;

[0031] 2, the welding structure; 21, the rotary welding mechanism; 22, the positioning mechanism; 23, the pasting plate mechanism;

[0032] 211, the bent pipe piece; 212, the rotary welding shaft; 213, the welding rod;

[0033] 221, the adjusting bin; 222, the positioning arm; 223, the tooth groove; 224, the cavity; 225, the side plate; 226, the driving gear;

[0034] 231, the friction plate; 232, the shovel head; 2321, the pasting shovel; 2322, the empty lifting shovel;

[0035] 3, the angle pushing;

[0036] 4, the fixed rod; 41, the clamping arm;

[0037] 5, the inner pad. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0039] Embodiment, please refer to Figure 1 and Figure 2As shown, the purpose of the present embodiment is to provide a welding equipment for steel pipe pole processing, which comprises an equipment body 1, the equipment body 1 comprises a welding platform 12, the top of both sides of the welding platform 12 is fixedly connected with a frame piece 11, the welding platform 12 and the two frame pieces 11 form a welding bin 13, one end of the welding bin 13 is provided with a connecting piece 14, the connecting piece 14 is used for providing support for the welding structure 2; the welding structure 2 comprises a rotary welding mechanism 21, the rotary welding mechanism 21 is used for the inner wall rotary welding of the pipeline, the side of the rotary welding mechanism 21 away from the connecting piece 14 is movably connected with a positioning mechanism 22, when the steel pipe pole to be welded is inserted outside the rotary welding mechanism 21, the positioning mechanism 22 can assist in positioning the steel pipe welding; the end of the positioning mechanism 22 away from the rotary welding mechanism 21 is fixedly connected with a pasting plate mechanism 23, when the rotary welding mechanism 21 welds the steel pipe pole, the pasting plate mechanism 23 can generate heat by friction at the symmetry of the welding point, balance the thermal stress in the welded pipeline, at the same time, the positioning mechanism 22 can also promote the discharge of the airflow generated by the welding under the driving of the rotary welding mechanism 21.

[0040] In order to further improve the sealing performance of welding, the inner wall of the short steel pipe pole needs to be welded and connected. Due to the circular structure of the inner diameter of the steel pipe pole, rotary welding needs to be realized through the rotary welding mechanism 21. The rotary welding mechanism 21 comprises a bent pipe piece 211 fixedly connected to the bottom of the fixed connecting piece 14. The rotary welding shaft 212 is rotatably arranged in the inside of the bent pipe piece 211. The end of the rotary welding shaft 212 close to the bent pipe piece 211 is coaxially connected with the motor. The bent pipe piece 211 provides rotary support for the rotary welding shaft 212. The end of the rotary welding shaft 212 away from the bent pipe piece 211 is movably connected with the welding rod 213.

[0041] As shown in Figure 3 and Figure 6 The bent pipe piece 211 fixedly installed at the bottom end of the connecting piece 14 can provide support for the rotary welding shaft 212. The rotary welding shaft 212 is movably installed in the inside of the bent pipe piece 211. One end of the rotary welding shaft 212 is fixedly connected with the output shaft of the motor. The other end is movably connected with the welding rod 213. When the steel pipe pole needs to be welded, the motor is started to drive the rotary welding shaft 212 fixedly connected with the output shaft of the motor to rotate in the inside of the steel pipe pole, thereby driving the welding rod 213 to perform rapid circle welding. Compared with uniform speed welding, rapid circle welding can make the pipeline in the circumferential direction be heated more uniformly, reduce the local overheating or insufficient heating area, thereby improving the quality and uniformity of the weld. Each circle welding is equivalent to a certain degree of remelting and repair of the previous weld, which can further increase the penetration of the weld, ensure better fusion between the weld and the base material of the pipeline, and improve the sealing performance and strength of the welding. At the same time, rapid circle welding can complete more welding tasks in a shorter time, thereby improving the production efficiency.

[0042] It should be noted that the rotating speed of the rotating shaft 212 can follow the adjustment of the inner diameter of the steel pipe rod, the larger the inner diameter, the slower the rotating speed needs to be, because in a larger circumferential range, it is difficult to ensure uniform heat input and welding treatment for each part at high speed, and reducing the rotating speed helps to ensure that the welding rod 213 has sufficient time to fully weld each part in the relatively large inner diameter steel pipe rod, thereby improving the welding quality and sealing performance.

[0043] Wherein, the welding rod 213 adopts plasma arc welding technology, and the connecting pipe can be connected from the inside of the rotating shaft 212, it is worth noting that: when plasma arc welding is welding, it needs to maintain a certain gap with the welding position, because plasma arc welding is a high-energy-density welding method, which melts and connects metal materials by generating high-temperature plasma, if the welding rod 213 has no gap with the welding position, the plasma arc may directly contact the workpiece, resulting in excessive melting, burning through or other welding defects, maintaining an appropriate gap can control the energy input of the plasma arc, making the welding process more stable and controllable, at the same time, the gap can also allow the gas and slag generated by welding to be smoothly discharged, improving the welding quality.

[0044] Because the welding rod 213 adopts plasma arc welding technology, the welding rod 213 needs to have a certain gap with the welding position, therefore, the position of the welding rod 213 needs to be determined by the positioning mechanism 22, the positioning mechanism 22 includes an adjusting bin 221 opened in the inside of the rotating shaft 212 away from the elbow piece 211, the inside of the adjusting bin 221 is fixedly connected with two side plates 225, the two side plates 225 form a middle cavity 224 therebetween, the welding rod 213 is located inside the middle cavity 224 close to one side of the elbow piece 211, the middle part of the middle cavity 224 is rotatably provided with a drive gear 226, the drive gear 226 is coaxially connected with a micro motor, and the micro motor is fixedly installed on the surface of one of the side plates 225;

[0045] The end of the middle cavity 224 away from the welding rod 213 is slidably provided with a positioning arm 222, the positioning arm 222 extends out of the surface of the rotating shaft 212 at both upper and lower ends of the welding rod 213, the positioning arm 222 and the welding rod 213 are both provided with a gear slot 223 at one end close to the drive gear 226, and the two gear slots 223 are engaged with the drive gear 226.

[0046] Referring to Figure 2The welding rod 213 slides in the adjustment chamber 221 opened at the end of the rotating welding shaft 213, and the interior of the adjustment chamber 221 is fixedly connected to two side plates 225. A driving gear 226 is rotatably arranged inside the middle cavity 224 formed inside the two side plates 225. The welding rod 213 and the end of the positioning arm 222 located at the side end of the driving gear 226 are both provided with tooth grooves 223 that mesh with the surface of the driving gear 226 (the tooth grooves 223 are opened in the middle, which effectively prevents the welding rod 213 and the positioning arm 222 from being separated from the driving gear 226). Figure 5 As shown, based on the transmission principle of the driving gear 226, when the driving gear 226 is driven by the wireless micro-motor to rotate, the gear teeth of the driving gear 226 interact with the tooth grooves 223 provided on the side walls of the welding rod 213 and the positioning arm 222, generating thrust and pull. Since the gear teeth on both sides of the driving gear 226 are symmetrically distributed and mesh with the tooth grooves 223 on both sides at the same time, when the driving gear 226 rotates, the welding rod 213 and the positioning arm 222 are subjected to forces of equal magnitude and opposite directions, thereby simultaneously running in opposite directions.

[0047] Among them, the length from the long end of the positioning arm 222 to the rotary welding shaft 212 is greater than the length from the long end of the welding rod 213 to the rotary welding shaft 212. When the driving gear 226 is running, the end of the positioning arm 222 will first fit into the inner wall of the steel pipe rod, and can be observed from the side opening of the short steel pipe rod. The short pipe length will not affect the observation result. Then, the micro motor is controlled according to the observation result. When the positioning arm 222 fits into the inner wall of the steel pipe rod, there is a certain gap between the welding rod 213 and the inner wall of the steel pipe rod, thereby achieving the effect of positioning the welding rod 213.

[0048] like Figure 4 As shown, the welding rod 213 and the positioning arm 222 are symmetrically arranged. When the rotating welding shaft 212 drives the welding rod 213 and the positioning arm 222 to rotate inside the steel pipe rod, the positioning arm 222 and the welding rod 213 can rotate rapidly inside the pipe. During this process, the airflow generated by the rotation helps to break the stagnant state of the gas near the welding area, so that the gas generated by welding can flow more smoothly to the pipe outlet. In this way, the accumulation of harmful gases generated during the welding process in the pipe can be reduced, which is conducive to creating a relatively stable welding environment and improving the efficiency and quality of welding.

[0049] It should be noted that: in this embodiment, the inner diameter radius of the thick-walled short pipe suitable for welding needs to be smaller than the size of the positioning arm 222, and the length of the thick-walled short pipe suitable for welding needs to be smaller than the distance between the elbow 211 and the welding rod 213.

[0050] Finally, the specific structure of the plate sticking mechanism 23 is disclosed. The plate sticking mechanism 23 includes a friction plate 231 fixedly connected to the end of the positioning arm 222. The friction plate 231 is located at the end of the positioning arm 222 away from the welding rod 213. One end of the friction plate 231 is fixedly connected with a shovel head 232. The shovel head 232 includes a fitting shovel 2321 and a hollowing shovel 2322.

[0051] The fitting shovel 2321 is flush with the end of the friction plate 231 away from the positioning arm 222. The hollowing shovel 2322 is flush with the end of the friction plate 231 close to the positioning arm 222. The width of the hollowing shovel 2322 is greater than the width of the fitting shovel 2321.

[0052] Referring to Figure 6 The friction plate 231 is installed at the end of the positioning arm 222 away from the welding rod 213. The bottom end of the friction plate 231 is flush with the bottom end of the positioning arm 222, as shown in Figure 4 When the positioning arm 222 is fitted with the inner wall of the steel pipe rod, the end of the friction plate 231 will also be fitted. Since the friction plate 231 is relatively wide in size, the friction plate 231 will rotate with the positioning arm 222 during the rotation of the positioning arm 222 along the rotation axis 212. Friction occurs at the connection between the two welded steel pipe rods, achieving the effect of polishing the inner wall of the pipe for welding. The friction plate 231 not only makes the weld surface smoother and more uniform, improving the appearance quality of the weld, but also generates heat through friction, reducing stress concentration. Specifically, the heat generated by friction can increase the temperature of the metal material near the weld, thereby improving its plasticity and fluidity, which is beneficial to the fusion and crystallization of the weld, improving the strength and sealing performance of the weld. At the same time, reducing stress concentration can reduce the risk of cracks and fractures in the weld during use, prolonging the service life of the steel pipe rod.

[0053] In combination Figure 4 The rotating front end of the friction plate 231 is fixedly connected with the shovel head 232, as shown in Figure 6 The shovel head 232 is composed of the fitting shovel 2321 and the hollowing shovel 2322. During the welding process, it is easy to form bumps due to the spatter of sparks. If the bumps are raised relatively high, the top of the bumps can be first removed by the hollowing shovel 2322, and then the bottom of the bumps can be removed by the fitting shovel 2321. The double-shovel structure helps to improve the removal effect. At the same time, the hollowing shovel 2322 can also play a role in heat preservation when the fitting shovel 2321 and the friction plate 231 are rubbing the inner wall of the pipe to generate heat, making the heat generation effect more persistent, which helps to reduce stress concentration, improve welding quality and stability, and prolong the service life of the pipe.

[0054] The convex block generated by the welding sparks can be removed by the shovel head 232, and the removed impurities are easy to remain on the inner wall of the steel pipe rod. Therefore, in order to facilitate the discharge of impurities, the friction plate 231 is fixedly connected with a push angle 3 on the side close to the elbow piece 211, and the surface of the push angle 3 is inclined.

[0055] The improvement lies in that Figure 3 As shown, when the welded steel pipe rod slides out from the welding chamber 13 away from the side of the connecting piece 14, the push angle 3 on the friction plate 231 can scrape the impurities on the inner wall of the front section of the steel pipe rod, effectively removing the impurities remaining on the inner wall of the steel pipe rod due to the welding process, and maintaining the cleanliness of the inner wall of the steel pipe rod; wherein: Figure 3 The dotted arrow in the figure indicates the sliding direction of the steel pipe rod after welding, Figure 3 The solid arrow in the figure indicates the scraping direction of the push angle 3.

[0056] Considering the fixing of the welding rod 213 and the positioning arm 222, in order to further improve the fixing effect of the welding rod 213 and the positioning arm 222, two fixed rods 4 are fixedly connected to the inner walls on both sides of the middle cavity 224, and each of the four fixed rods 4 is fixedly connected with a clamping arm 41 on the side close to the middle part of the middle cavity 224. The adjacent two clamping arms 41 can cooperate with each other to clamp and fix the welding rod 213 and the positioning arm 222 respectively.

[0057] The improvement lies in that, as Figure 7 As shown, the adjacent fixed rods 4 and clamping arms 41 can cooperate with each other to clamp and fix the welding rod 213 and the positioning arm 222, ensure that the welding rod 213 maintains accurate position and stable state during welding operation, thereby improving the precision and quality of welding. At the same time, stable clamping and fixing can also reduce the welding deviation caused by vibration or external interference during welding process, and provide reliable protection for the whole welding process, wherein: Figure 7 The dotted arrow in the figure indicates the clamping direction of the adjacent fixed rods 4 and clamping arms 41 after cooperation.

[0058] Since the welding rod 213 and the positioning arm 222 need to slide inside the clamping arm 41 when adjusting the position, in order to reduce the sliding friction between the clamping arm 41 and the welding rod 213 and the positioning arm 222, the four clamping arms 41 are fixedly connected with an inner pad 5 on the side away from the fixed rod 4, and the four inner pads 5 are all of rough surface and elastic material.

[0059] The improvement lies in that the elastic inner pad 5 with rough surface can increase the friction between the welding rod 213 and the positioning arm 222, to a certain extent, reduce the accidental movement of them when they do not need to slide, ensure the position stability during the welding process, and the elastic material can play a buffering role when the clamping arm 41 clamps and fixes the welding rod 213 and the positioning arm 222, so as to avoid damage to the welding rod 213 and the positioning arm 222 due to excessive clamping, at the same time, the reduction of sliding friction can make the welding rod 213 and the positioning arm 222 more smooth when adjusting the position, improve the convenience and efficiency of operation, and reduce the heat and wear caused by friction, wherein the inner pad 5 is preferably made of rough surface rubber material.

[0060] In summary, the working principle of the present scheme is as follows: first, when two short steel pipe rods need to be welded, one of the steel pipe rods is sleeved on the surface of the rotary welding shaft 212, and the interface to be welded of the steel pipe rod is aligned with the welding rod 212, so as to realize the positioning of the steel pipe rod, and then the other steel pipe rod to be welded is aligned and fixed with the outer wall of the two steel pipe rods;

[0061] Then, the wireless micro motor is started to drive the drive gear 226, at this time, the staff can observe at the side of the steel pipe rod, the teeth of the drive gear 226 interact with the tooth grooves 223 opened in the side wall of the welding rod 213 and the positioning arm 222 to generate thrust and tension, drive the welding rod 213 and the positioning arm 222 to slide reversely, since the length from the long end of the positioning arm 222 to the rotary welding shaft 212 is greater than the length from the long end of the welding rod 213 to the rotary welding shaft 212, when the drive gear 226 operates, the end of the positioning arm 222 will first fit with the inner wall of the steel pipe rod, according to the observation result, the micro motor is controlled, when the positioning arm 222 fits with the inner wall of the steel pipe rod, there is a certain gap between the welding rod 213 and the inner wall of the steel pipe rod, realizing the positioning effect of the welding rod 213, at the same time, the end of the friction plate 231 flush with the bottom end of the positioning arm 222 will also fit with the inner wall of the pipe;

[0062] Then, the rotating speed of the rotary welding shaft 212 is adjusted according to the inner diameter size of the steel pipe rod to drive the welding rod 213 to perform rapid circle welding, when the rotary welding shaft 212 drives the welding rod 213 and the positioning arm 222 to rotate in the steel pipe rod, the positioning arm 222 and the welding rod 213 can rotate rapidly in the pipe, in this process, the airflow generated by rotation helps to break the stagnation state of gas near the welding area, so that the gas generated by welding can flow more smoothly to the pipe outlet, so that the accumulation of harmful gas in the pipe during the welding process can be reduced, which is conducive to creating a relatively stable welding environment, improving the efficiency and quality of welding;

[0063] In the process of rotating the positioning arm 222 with the rotation welding shaft 212, the friction plate 231 will rotate with it, and the friction will be carried out at the two welded steel pipe rod connecting places, achieving the effect of polishing the inner wall of the pipeline, the effect of the friction plate 231 not only can make the weld surface more smooth, improve the appearance quality of welding, but also can reduce stress concentration through frictional heat, specifically, the frictional heat can make the temperature of the metal material near the weld increase, thereby improving its plasticity and fluidity, which is beneficial to the fusion and crystallization of the weld, improves the strength and sealing performance of the weld, at the same time, reducing stress concentration can reduce the risk of cracks and fractures of the weld in the process of use, prolong the service life of the steel pipe rod.

[0064] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application, various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A welding device for processing steel pipe rods, comprising a device body (1), wherein the device body (1) comprises a welding platform (12), and frame members (11) are fixedly connected to the tops of both sides of the welding platform (12), and a welding chamber (13) is formed between the two frame members (11) and the welding platform (12), characterized in that: A connecting piece (14) is installed at one end of the welding chamber (13), and the connecting piece (14) is used to provide support for the welding structure (2); The welding structure (2) includes a transfer welding mechanism (21), the transfer welding mechanism (21) is used for rotating welding the inner wall of the pipeline, and a positioning mechanism (22) is movably connected to the side of the transfer welding mechanism (21) away from the connecting piece (14). When the steel pipe rod to be welded is inserted into the outside of the transfer welding mechanism (21), the positioning mechanism (22) can assist in positioning the steel pipe weld; The positioning mechanism (22) is fixedly connected to a plate-attaching mechanism (23) at one end away from the transfer welding mechanism (21). When the transfer welding mechanism (21) welds the steel pipe rod, the plate-attaching mechanism (23) can generate heat by friction at the symmetrical position of the welding point, thereby balancing the thermal stress in the welding pipe. At the same time, the positioning mechanism (22), driven by the transfer welding mechanism (21), can also promote the discharge of airflow generated by welding.

2. The welding equipment for steel pipe and rod processing according to claim 1, characterized in that: The rotary welding mechanism (21) comprises a bent pipe member (211) fixedly connected to the bottom of the fixed connecting member (14); a rotary welding shaft (212) is provided inside the bent pipe member (211) for rotation; one end of the rotary welding shaft (212) close to the bent pipe member (211) is coaxially connected to a motor; the bent pipe member (211) provides rotation support for the rotary welding shaft (212); and one end of the rotary welding shaft (212) away from the bent pipe member (211) is movably connected to a welding rod (213).

3. The welding equipment for steel pipe and rod processing according to claim 2, characterized in that: The positioning mechanism (22) includes an adjustment chamber (221) provided inside an end of the rotary welding shaft (212) away from the bent pipe (211); two side plates (225) are fixedly connected inside the adjustment chamber (221); a central cavity (224) is formed between the two side plates (225); the welding rod (213) is located inside the central cavity (224) on a side close to the bent pipe (211); a driving gear (226) is rotatably provided in the middle of the central cavity (224); the driving gear (226) is coaxially connected to a micro motor, and the micro motor is fixedly mounted on the surface of one of the side plates (225); A positioning arm (222) is slidingly provided at one end of the middle cavity (224) away from the welding rod (213); the upper and lower ends of the positioning arm (222) and the welding rod (213) extend out of the surface of the rotary welding shaft (212); the positioning arm (222) and the welding rod (213) are both provided with tooth grooves (223) at one end close to the driving gear (226); and the two tooth grooves (223) are both engaged with the driving gear (226).

4. The welding equipment for steel pipe and rod processing according to claim 3, characterized in that: The plate-attaching mechanism (23) includes a friction plate (231) fixedly connected to the end of the positioning arm (222), the friction plate (231) is located at the end of the positioning arm (222) away from the welding rod (213), one end of the friction plate (231) is fixedly connected to a shovel head (232), and the shovel head (232) includes a fitting shovel (2321) and a lifting shovel (2322); The laminating shovel (2321) is flush with the end of the friction plate (231) away from the positioning arm (222), and the lifting shovel (2322) is flush with the end of the friction plate (231) close to the positioning arm (222), and the width of the lifting shovel (2322) is greater than the width of the laminating shovel (2321).

5. The welding equipment for steel pipe and rod processing according to claim 4, characterized in that: A push angle (3) is fixedly connected to one side of the friction plate (231) close to the bent pipe (211), and the surface of the push angle (3) is in an inclined state.

6. The welding equipment for steel pipe and rod processing according to claim 3, characterized in that: Two fixing rods (4) are fixedly connected to the inner walls on both sides of the middle cavity (224); one side of the four fixing rods (4) close to the middle of the middle cavity (224) is fixedly connected to a clamping arm (41); two adjacent clamping arms (41) cooperate with each other to clamp and fix the welding rod (213) and the positioning arm (222) respectively.

7. The welding equipment for steel pipe and rod processing according to claim 6, characterized in that: The four clamping arms (41) are fixedly connected to an inner pad (5) on one side away from the fixing rod (4), and the four inner pads (5) are all made of elastic material with a rough surface.

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