A welding device and method for martensitic heat-resistant steel of a reheat boiler

Abstract

The present invention discloses a reheat boiler martensitic heat-resistant steel welding device and a method thereof, which belongs to the field of welding technology. The following scheme is now proposed, which includes an arc welding mechanism, wherein the arc welding mechanism is connected to an arc welding auxiliary mechanism, the arc welding mechanism includes arc welding equipment, the arc welding equipment is connected to an arc welding assembly, and the arc welding auxiliary mechanism includes a walking assembly, in which a one-way transmission assembly and a hydraulic control assembly are provided; the present invention can achieve the purpose of multi-directional angle adjustment of the welding rod through the welding rod angle adjustment assembly, thereby meeting actual welding needs, and the welding rod can be automatically set up through the combination of the walking assembly, the hydraulic control assembly and the arc welding assembly, and the walking assembly can be used to perform walking and uniform speed welding, accurately ensuring the welding position. During the welding process, the one-way transmission assembly can also drive the protrusion to control the hydraulic control assembly, so that the welding rod can move down at a uniform speed to approach the welding position, thereby ensuring the welding effect and improving the welding quality at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to a welding device and method for martensitic heat-resistant steel of a reheat boiler. Background Art

[0002] During the implementation of the reheat boiler martensitic heat-resistant steel welding process, the current mainstream plasma arc welding equipment has significant ergonomic flaws: its operation mode is highly dependent on manual hand-held welding torch for precise positioning, and long-term suspended operation can easily lead to muscle fatigue and hand stability fluctuations in the operator. This physiological limitation directly causes dynamic deviations in welding parameters (such as arc length and swing amplitude), which in turn induces a decline in weld formation quality, specifically manifested in the frequent occurrence of process defects such as slag inclusion, lack of fusion, and undercut. This operation mode not only seriously restricts the quality control stability of the welding process, but also places almost stringent requirements on the operator's skill proficiency and physical reserve, becoming a major technical bottleneck restricting the promotion of efficient welding technology. In addition, if the electrode clamp is accidentally touched during the welding process, it can easily cause the electrode to fall off, affecting its use. When the electrode is about to run out, it is not convenient to quickly eject it.

[0003] In response to the above problems, this invention document proposes a reheat boiler martensitic heat-resistant steel welding device and method. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the common plasma arc welding machine in the prior art needs to rely on professionals to hold the welding head for welding when in use. During the welding process, the arm is suspended in the air for a long time, which is prone to hand shaking, resulting in changes in the welding angle and position, making the welding effect poor and requiring high technical personnel. In addition, during the welding process, if the welding rod clamp is accidentally touched, it is very easy to cause the welding rod to fall off, affecting the use, and it is not convenient to quickly eject the welding rod when the welding rod is about to run out. A reheat boiler martensitic heat-resistant steel welding device and method are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A reheat boiler martensitic heat-resistant steel welding device comprises an arc welding mechanism connected to an arc welding auxiliary mechanism;

[0007] The arc welding mechanism includes an arc welding device, and an arc welding assembly is connected to the arc welding device;

[0008] The arc welding auxiliary mechanism includes a traveling assembly, wherein the traveling assembly is provided with a one-way transmission assembly and a hydraulic control assembly, wherein a bump is connected to the one-way transmission assembly, and the bump contacts one end of the hydraulic control assembly. The bump is driven by the one-way transmission assembly to move forward, so that when the welding rod melts and shortens, the bump controls the hydraulic control assembly to push down the welding rod clamped by the arc welding assembly, so that the welding rod moves downward at a uniform speed to perform arc welding operation;

[0009] A welding rod angle adjustment assembly is provided at one end of the walking assembly, and an adjustment frame is connected to one side of the welding rod angle adjustment assembly. The adjustment frame is fixedly connected to the lower part of the second piston cylinder of the hydraulic control assembly, and a second piston is provided inside the second piston cylinder. A second piston rod is fixedly connected to the lower part of the second piston, and the second piston rod passes through the second piston cylinder and is connected to one end of the arc welding assembly. The arc welding assembly is supported and limited by a limiting assembly, and one end of the limiting assembly is in contact with the inclined strip, and the inclined strip is fixedly connected to the adjusting frame.

[0010] Preferably, the arc welding assembly includes a terminal, which is plugged into the arc welding equipment, and one end of the terminal is connected to a connecting wire, which is fixedly connected to the top of the second piston cylinder through a wire rack, and one end of the connecting wire is connected to a welding clamp, which clamps a welding rod, and one end of the welding clamp is fixedly connected to the bottom end of the second piston rod.

[0011] Preferably, the walking assembly includes an upper armrest, a bracket is fixedly installed below the upper armrest, and four auxiliary wheels are rotatably installed at the four ends below the bracket.

[0012] Preferably, the welding rod angle adjustment assembly includes a connecting piece and a middle frame, the upper and lower sides of the middle frame are fixedly connected to the connecting piece, and the two connecting pieces are fixedly connected to the adjustment frame;

[0013] The first rotating shaft and the second rotating shaft are installed on the connecting member through each other, the middle frame is rotatably installed on the second rotating shaft through a bearing, the second rotating shaft passes through the adjustment frame and is fixedly connected to the operating head, and the operating head is provided with a second fixing bolt.

[0014] Preferably, the first rotating shaft is rotatably mounted on two fixed plates through two bearings respectively, the two fixed plates are fixedly connected to one end of the upper armrest, both ends of the first rotating shaft are fixedly connected to a connecting head, and the connecting head is provided with a first fixing bolt.

[0015] Preferably, the one-way transmission assembly includes two one-way wheels, which are rotatably mounted on two wheel frames through two bearings. The wheel frames are fixedly connected to the upper armrest. The two one-way wheels are connected by chain transmission. The protrusion is installed on the chain. One of the one-way wheels passes through the upper armrest and is fixedly connected to the turning handle.

[0016] Preferably, the hydraulic control assembly includes a first piston cylinder, which is installed on the upper armrest, a first piston is provided inside the first piston cylinder, a first spring is fixedly connected between the first piston and the side wall of the first piston cylinder, a first piston rod is fixedly connected to one side of the first piston, the first piston rod passes through the first piston cylinder and overlaps with the protrusion.

[0017] Preferably, a delivery pipe is connected above one end of the first piston cylinder, and the delivery pipe is connected to the second piston cylinder. The section of the delivery pipe connected to the second piston cylinder is a hose structure, and a length is reserved. Multiple fixings are installed on the delivery pipe, and connecting lines are passed through and installed on the multiple fixings.

[0018] Preferably, the limiting assembly includes a guide sleeve, which is fixedly connected to one end of the welding clamp, a sliding rod is slidably connected in the guide sleeve, and rollers and limiting blocks are fixedly connected at both ends of the sliding rod, the rollers are in contact with the inclined surface, and a second spring is fixedly connected between the limiting block and the guide sleeve, and the length of the limiting block is the same as the distance between the two clamping handles of the welding clamp.

[0019] A method for using a reheat boiler martensitic heat-resistant steel welding device comprises the following steps:

[0020] S1. During arc welding, the welding rod is clamped by the welding clamp and the first rotating shaft is rotated as needed. The first rotating shaft drives the middle frame to adjust via the connecting joint and the second rotating shaft. The middle frame drives the adjustment frame and the second piston cylinder via the connecting member to adjust the angle. The welding clamp drives the welding rod to adjust the angle. After adjustment, the first fixing bolt is tightened on the fixing plate to achieve angular positioning.

[0021] S2. Then, according to the welding angle requirement, the adjusting frame is directly rotated to make the connecting member drive the middle frame to rotate on the second rotating shaft, so that the adjusting frame drives the welding clamp and welding rod to be adjusted, and then the second fixing bolt is tightened on the adjusting frame to fasten them, thereby meeting the welding requirements of different angles;

[0022] S3. After the welding rod is adjusted in angle, the bottom end of the welding rod corresponds to the welding position. Then, the arc welding equipment is energized to generate an arc between the welding clamp and the welding rod. The heat generated by the arc discharge melts the welding rod, and the reheat boiler martensitic heat-resistant steel is welded.

[0023] S4. During mobile welding operations, the upper armrest and auxiliary wheels cooperate to drive the electrode angle adjustment assembly and the adjustment frame to move, so that the second piston cylinder and the second piston rod drive the welding clamp to move, and the welding clamp drives the electrode to move to perform welding operations;

[0024] S5. During the melting and welding process of the welding rod, its length gradually shortens. At this time, when the upper handrail is moved, the one-way wheel is driven to rotate by toggling the turning handle, so that the one-way wheel drives the chain to move, and the chain drives the convex block to move. The convex block pushes the first piston rod and the first piston to move, and the first piston drives the first spring to deform, so that the liquid inside the first piston cylinder enters the second piston cylinder through the delivery pipe. At this time, the second piston rod is driven by hydraulic pressure to move, and the second piston rod drives the welding clamp to move downward, so that the roller is squeezed downward and the inclined strip is squeezed, so that the roller drives the slide rod to move, and the slide rod drives the limit block to move. At the same time, the second spring is deformed so that the limit block is located at the two clamping handles of the welding clamp. At this time, the welding clamp is limited, so that the welding rod moves downward stably and at a uniform speed, and then continuous welding operation is carried out;

[0025] S6. After welding is completed, the one-way wheel is continuously rotated to make the chain drive the protrusion to move in a circular motion and reset. At the same time, the first spring drives the first piston rod to reset, and the hydraulic pressure drives the second piston rod to reset upward, so that the welding clamp is reset and the roller is lifted off the inclined surface of the inclined strip. At this time, the second spring drives the slide rod to reset, so that the limit block is away from the clamping handle of the welding clamp, and then the next round of welding operation is carried out.

[0026] Compared with the prior art, the present invention provides a reheat boiler martensitic heat-resistant steel welding device and method thereof, which has the following beneficial effects:

[0027] 1. The reheat boiler martensitic heat-resistant steel welding device and method thereof can realize multi-directional angle adjustment of the welding rod through the welding rod angle adjustment component to meet actual welding needs. Moreover, the welding rod can be automatically set up through the combination of the walking component, the hydraulic control component and the arc welding component, and the walking component can be used to perform walking and uniform speed welding to accurately ensure the welding position. During the welding process, the one-way transmission component can also drive the protrusion to control the hydraulic control component, so that the welding rod can move downward at a uniform speed to approach the welding position, thereby ensuring the welding effect and improving the welding quality of the plasma arc welding machine.

[0028] 2. The reheat boiler martensitic heat-resistant steel welding device and method thereof, through the downward movement of the second piston rod, causes the welding clamp to drive the limit assembly to move downward, causes the roller to be squeezed with the inclined surface of the inclined strip, and causes the slide rod to drive the limit block to be located between the two clamping handles of the welding clamp, thereby limiting the clamping handles of the welding clamp, ensuring that the welding clamp firmly clamps the welding rod and prevents it from falling off, and when the chain drives the protrusion to move upward, the protrusion separates from the first piston rod, at which time the first spring drives the first piston to reset, and the second piston and the second piston rod are driven upward by hydraulic pressure to reset the welding clamp, thereby resetting the welding clamp, and then the welding rod that is about to be used can be automatically reset upward, reducing adhesion, thereby improving welding quality and reducing the difficulty of subsequent trimming.

[0029] 3. The reheat boiler martensitic heat-resistant steel welding device and method thereof can adjust the welding rod in multiple directions through the welding rod angle adjustment component, so that the welding rod angle adjustment component can cooperate with the walking component to meet the needs of multi-angle welding. In addition, during the welding process, the welding rod can be operated to move at a uniform speed by moving the walking component, and by toggling the one-way transmission component, the movement of the hydraulic control component is controlled by the protrusion, and then the welding rod can be controlled to move downward at a uniform speed through the welding clamp, thereby ensuring smooth welding operations. After the welding rod is used up, the hydraulic control component can drive the remaining welding rod to pop up, which is convenient for subsequent replacement of the welding rod. Using this method for auxiliary welding can reduce the difficulty of operation, ensure stable welding needs, and achieve high-quality welding operations without excessively high skill requirements for the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional view of a martensitic heat-resistant steel welding device for a reheat boiler proposed by the present invention;

[0031] Figure 2 A three-dimensional view of the arc welding auxiliary mechanism of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0032] Figure 3 A three-dimensional view of the connection between the travel assembly and the hydraulic control assembly of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0033] Figure 4 A perspective view of a cross section of an arc welding auxiliary mechanism of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0034] Figure 5 A three-dimensional view of the connection between the traveling assembly and the welding rod angle adjustment assembly of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0035] Figure 6 A three-dimensional view of a welding rod angle adjustment assembly of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0036] Figure 7 A three-dimensional view of the connection between the hydraulic control assembly and the arc welding assembly of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0037] Figure 8 A three-dimensional view of a one-way wheel transmission assembly of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0038] Figure 9 A perspective view of a cross section of a second piston cylinder of a reheat boiler martensitic heat-resistant steel welding device proposed by the present invention;

[0039] Figure 10 For the present invention Figure 9 A magnified view of the .

[0040] In the figure: 100, arc welding mechanism; 101, arc welding equipment; 102, arc welding assembly; 1021, terminal; 1022, connecting wire; 1023, welding clamp; 200, arc welding auxiliary mechanism; 201, walking assembly; 2011, upper handrail; 2012, bracket; 2013, auxiliary wheel; 202, hydraulic control assembly; 2021, first piston; 2022, first piston rod; 2023, first spring; 2024, first piston cylinder; 2025, delivery pipe; 2026, fixing member; 2027, second piston cylinder; 2028, second piston; 2029, second piston rod; 203, welding Angle adjustment assembly; 2031, connecting joint; 2032, middle frame; 2033, connecting piece; 2034, first rotating shaft; 2035, fixing plate; 2036, connecting head; 2037, first fixing bolt; 2038, second rotating shaft; 2039, operating head; 204, inclined strip; 205, adjustment frame; 206, one-way transmission assembly; 2061, one-way wheel; 2062, chain; 2063, wheel frame; 2064, rotating handle; 207, bump; 208, limit assembly; 2081, limit block; 2082, slide rod; 2083, guide sleeve; 2084, roller; 2085, second spring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0043] Example 1: Reference Figures 1-9 A reheat boiler martensitic heat-resistant steel welding device includes an arc welding mechanism 100, and an arc welding auxiliary mechanism 200 is connected to the arc welding mechanism 100;

[0044] The arc welding mechanism 100 includes an arc welding device 101, which is connected to an arc welding assembly 102. The arc welding assembly 102 includes a terminal 1021, which is plugged into the arc welding device 101. The terminal 1021 is plugged into the arc welding device 101 to energize the device 101, thereby facilitating arc welding operations. One end of the terminal 1021 is connected to a connecting wire 1022, which is fixedly connected to the top of the second piston cylinder 2027 via a wire rack. One end of the connecting wire 1022 is connected to a welding clamp 1023, which holds a welding rod. When the welding clamp 1023 is energized, an arc is generated between the welding clamp 1023 and the welding rod, causing the welding rod to melt and allowing welding operations to be carried out smoothly. One end of the welding clamp 1023 is fixedly connected to the bottom end of the second piston rod 2029.

[0045] The arc welding auxiliary mechanism 200 includes a walking assembly 201, which includes an upper armrest 2011. A bracket 2012 is fixedly installed below the upper armrest 2011, and four auxiliary wheels 2013 are rotatably installed at the four ends below the bracket 2012. The upper armrest 2011 can provide a force application point, and the auxiliary wheels 2013 can play the role of supporting at the same height, so that the upper armrest 2011 and the auxiliary wheels 2013 can smoothly drive the welding rod to stably perform welding operations. A one-way transmission assembly 206 and a hydraulic control assembly 202 are provided in the walking assembly 201. The hydraulic control assembly 202 includes a first piston cylinder 2024, which is installed on the upper armrest 2011. A first piston 2021 is provided inside, and a first spring 2023 is fixedly connected between the first piston 2021 and the side wall of the first piston cylinder 2024. The first spring 2023 drives the first piston 2021 to reset, so that the first piston rod 2022 can be smoothly reset. At the same time, the first piston 2021 is reset, and the second piston 2028 can be driven by hydraulic pressure to smoothly complete the reset action, thereby facilitating the upward reset of the welding clamp 1023. A first piston rod 2022 is fixedly connected to one side of the first piston 2021, and the first piston rod 2022 passes through the first piston cylinder 2024 and overlaps with the protrusion 207. A delivery pipe 2025 is connected to the top of one end of the first piston cylinder 2024, and the delivery pipe 2025 is connected to the second piston cylinder 20 27 is connected, a section of the delivery pipe 2025 connected to the second piston cylinder 2027 is a hose structure, and a length is reserved. The delivery pipe 2025 can be used to transport liquid, and a part of the delivery pipe 2025 is a hose structure, so that the second piston cylinder 2027 can be smoothly adjusted. A plurality of fixings 2026 are installed on the delivery pipe 2025, and the connecting line 1022 can be positioned by the fixings 2026. The connecting line 1022 is installed on a plurality of fixings 2026. The one-way transmission assembly 206 includes two one-way wheels 2061. The one-way wheels 2061 are rotatably mounted on two wheel frames 2063 through two bearings. The wheel frames 2063 are fixedly connected to the upper armrest 2011. The two The one-way wheel 2061 is connected through the chain 2062. The one-way transmission between the one-way wheel 2061 and the chain 2062 is the same as the crank transmission structure of a bicycle. It only realizes one-way rotation to avoid reverse movement caused by misoperation, which in turn causes the position of the welding rod to shift upward. The protrusion 207 is installed on the chain 2062. One of the one-way wheels 2061 passes through the upper armrest 2011 and is fixedly connected to the handle 2064. The one-way wheel 2061 can be easily operated to rotate through the handle 2064. The one-way transmission component 206 is connected with a protrusion 207. The protrusion 207 contacts one end of the hydraulic control component 202. The protrusion 207 is driven by the one-way transmission component 206 to move forward, so that when the welding rod is melted and shortened,The bump 207 controls the hydraulic control assembly 202 to push down the welding rod held by the arc welding assembly 102 so as to move downward at a uniform speed to perform arc welding operation;

[0046] One end of the walking assembly 201 is provided with a welding rod angle adjustment assembly 203, which includes a connecting section 2031 and a middle frame 2032. The upper and lower sides of the middle frame 2032 are fixedly connected with connecting pieces 2033. The two connecting pieces 2033 are fixedly connected to the adjustment frame 205. The connecting section 2031 is provided with a first rotating shaft 2034 and a second rotating shaft 2038. The first rotating shaft 2034 is rotatably mounted on the two fixed plates 2035 through two bearings. The first rotating shaft 2034 can be rotated by the bearings. The first rotating shaft 2034 is fixedly connected to the upper armrest 2011, and the two ends of the first rotating shaft 2034 are fixedly connected to the connecting head 2036. The connecting head 2036 is provided with a first fixing bolt 2037. The angle of the first rotating shaft 2034 can be locked by the first fixing bolt 2037 to prevent the first rotating shaft 2034 from being tilted. The middle frame 2032 is rotatably mounted on the second rotating shaft 2038 through a bearing. The middle frame 2032 can be smoothly rotated through the outer ring of the bearing, thereby changing the angle of the welding rod to meet the welding requirements of different angles. The second rotating shaft 2038 is penetrated by the adjusting frame 205 and is fixedly connected to the operating head 2039. The operating head 2039 is provided with a second fixing bolt, which can lock the position of the adjusting frame 205 to prevent the adjusting frame 205 from angular deviation. One side of the welding rod angle adjustment assembly 203 is connected to the adjusting frame 205 The adjusting frame 205 is fixedly connected to the bottom of the second piston cylinder 2027 of the hydraulic control component 202. A second piston 2028 is provided inside the second piston cylinder 2027. A second piston rod 2029 is fixedly connected to the bottom of the second piston 2028. The second piston rod 2029 passes through the second piston cylinder 2027 and is connected to one end of the arc welding component 102. The arc welding component 102 is supported and limited by the limiting component 208, and one end of the limiting component 208 is in contact with the inclined surface 204, and the inclined surface 204 is fixedly connected to the adjusting frame 205.

[0047] In this embodiment, the connecting joint 2031 and the second rotating shaft 2038 can be adjusted to rotate by the first rotating shaft 2034, so that the middle frame 2032 and the connecting member 2033 drive the second piston cylinder 2027 to rotate, and the second piston rod 2029 drives the welding clamp 1023 and the welding rod to adjust. At the same time, the middle frame 2032 can be directly rotated to achieve the purpose of multi-directional adjustment of the welding rod angle to meet the actual welding needs. In addition, the walking assembly 201, the hydraulic control assembly 202 and the arc welding assembly 102 can be combined to automatically set the welding rod, and the auxiliary wheel 2033 can be used to adjust the welding rod angle. 013 cooperates with the upper handrail 2011 to walk at a uniform speed, and the welding rod moves at a uniform speed to accurately ensure the welding position. During the welding process, the one-way wheel 2061 can be driven to rotate by toggling the handle 2064, so that the chain 2062 drives the protrusion 207 to control the movement of the first piston rod 2022 and the first piston 2021, and the second piston 2028 and the second piston rod 2029 are driven by hydraulic pressure to move, so that the second piston rod 2029 drives the welding clamp 1023 and the welding rod to move downward at a uniform speed to approach the welding position, thereby ensuring the welding effect and improving the welding quality.

[0048] Example 2: Reference Figures 8-10 , a reheat boiler martensitic heat-resistant steel welding device includes a hydraulic control component 202, the hydraulic control component 202 includes a first piston cylinder 2024, the first piston cylinder 2024 is installed on the upper handrail 2011, a first piston 2021 is provided inside the first piston cylinder 2024, a first spring 2023 is fixedly connected between the first piston 2021 and the side wall of the first piston cylinder 2024, a first piston rod 2022 is fixedly connected to one side of the first piston 2021, the first piston rod 2022 passes through the first piston cylinder 2024 and overlaps with the protrusion 207, a delivery pipe 2025 is connected above one end of the first piston cylinder 2024, the delivery pipe 2025 is connected to the second piston cylinder 2027, the section connecting the delivery pipe 2025 and the second piston cylinder 2027 is a hose structure, and a length is reserved, a plurality of fixing parts 2026 are installed on the delivery pipe 2025, and the connecting line 1022 is installed on the plurality of fixing parts 2026;

[0049] The limiting assembly 208 includes a guide sleeve 2083, which is fixedly connected to one end of the welding clamp 1023. A slide rod 2082 is slidably connected to the guide sleeve 2083. The guide sleeve 2083 can guide the slide rod 2082 so that the slide rod 2082 slides smoothly. The two ends of the slide rod 2082 are respectively fixedly connected to rollers 2084 and limit blocks 2081. The rollers 2084 are in contact with the inclined surface 204. The rollers 2084 move downward to generate an extrusion motion between the inclined surface 204 and the inclined surface 204, so that the slide rod 208 2 drives the limit block 2081 to move and limit the clamping handle of the welding clamp 1023 to ensure the stability of the welding clamp 1023 in clamping the welding rod. A second spring 2085 is fixedly connected between the limit block 2081 and the guide sleeve 2083. The second spring 2085 can drive the slide bar 2082 and the limit block 2081 to reset, thereby automatically removing the limiting operation of the welding clamp 1023, facilitating the subsequent operation of the welding clamp 1023 to clamp the welding rod. The length of the limit block 2081 is the same as the distance between the two clamping handles of the welding clamp 1023.

[0050] In this embodiment, the one-way transmission assembly 206 drives the projection 207 to move, so that the projection 207 drives the first piston 2021 to move through the first piston rod 2022, and the second piston rod 2029 is driven downward by the hydraulic pressure, so that the welding clamp 1023 drives the limiting assembly 208 to move downward, so that the roller 2084 is squeezed with the inclined surface of the inclined surface 204, so that the slide bar 2082 drives the limiting block 2081 to be located between the two clamping handles of the welding clamp 1023, thereby limiting the clamping handles of the welding clamp 1023. The welding clamp 1023 is ensured to firmly clamp the welding rod to prevent it from falling off. Moreover, when the chain 2062 drives the protrusion 207 to move upward, the protrusion 207 is separated from the first piston rod 2022. At this time, the first spring 2023 drives the first piston 2021 to reset, and drives the second piston 2028 and the second piston rod 2029 to reset upward through hydraulic pressure, so that the welding clamp 1023 is reset, and then the welding rod that is about to be used up can be automatically reset upward, reducing adhesion, thereby improving welding quality and reducing the difficulty of subsequent trimming.

[0051] Example 3: Reference Figure 4-Figure 5 and Figure 7 A reheat boiler martensitic heat-resistant steel welding device includes an arc welding auxiliary mechanism 200, which includes a travel assembly 201. The travel assembly 201 is provided with a one-way transmission assembly 206 and a hydraulic control assembly 202. The one-way transmission assembly 206 is connected to a protrusion 207, which contacts one end of the hydraulic control assembly 202. The one-way transmission assembly 206 drives the protrusion 207 to move forward. When the welding rod melts and shortens, the protrusion 207 controls the hydraulic control assembly 202 to push down the welding rod clamped by the arc welding assembly 102, so that the welding rod moves downward at a uniform speed to perform arc welding operation.

[0052] A welding rod angle adjustment assembly 203 is provided at one end of the walking assembly 201, and an adjustment frame 205 is connected to one side of the welding rod angle adjustment assembly 203. The adjustment frame 205 is fixedly connected to the bottom of the second piston cylinder 2027 of the hydraulic control assembly 202. A second piston 2028 is provided inside the second piston cylinder 2027, and a second piston rod 2029 is fixedly connected to the bottom of the second piston 2028. The second piston rod 2029 passes through the second piston cylinder 2027 and is connected to one end of the arc welding assembly 102. The arc welding assembly 102 is supported and limited by the limit assembly 208, and one end of the limit assembly 208 is in contact with the inclined surface 204, and the inclined surface 204 is fixedly connected to the adjustment frame 205.

[0053] In this embodiment: the welding rod can be adjusted in multiple directions through the welding rod angle adjustment component 203, so that the welding rod angle adjustment component 203 can cooperate with the walking component 201 to meet the needs of multi-angle welding, and during the welding process, the welding rod can be operated to move at a uniform speed by moving the walking component 201, and by toggling the one-way transmission component 206, the movement of the hydraulic control component 202 is controlled by the protrusion 207, and then the welding rod can be controlled to move downward at a uniform speed through the welding clamp 1023, so as to ensure smooth welding operations, and after the welding rod is used up, the hydraulic control component 202 can drive the remaining welding rod to pop up, which is convenient for subsequent replacement of the welding rod. Using this method for auxiliary welding can reduce the difficulty of operation, ensure stable welding needs, and do not require excessively high skills from the operator to achieve high-quality welding operations.

[0054] A method for using a reheat boiler martensitic heat-resistant steel welding device comprises the following steps:

[0055] S1. During arc welding, the welding rod is clamped by the welding clamp 1023 and the first rotating shaft 2034 is rotated as needed. The first rotating shaft 2034 drives the middle frame 2032 to adjust via the connecting joint 2031 and the second rotating shaft 2038. The middle frame 2032 drives the adjusting frame 205 and the second piston cylinder 2027 via the connecting piece 2033 to adjust the angle. The welding clamp 1023 drives the welding rod to adjust the angle. After adjustment, the first fixing bolt 2037 is tightened on the fixing plate 2035 to position the angle.

[0056] S2. Then, according to the welding angle requirement, the adjusting frame 205 is directly rotated, so that the connecting member 2033 drives the middle frame 2032 to rotate on the second rotating shaft 2038, so that the adjusting frame 205 drives the welding clamp 1023 and the welding rod to be adjusted, and then the second fixing bolt is tightened on the adjusting frame 205 to fasten them, thereby meeting the welding requirements of different angles;

[0057] S3. After the angle of the welding rod is adjusted, the bottom end of the welding rod corresponds to the welding position. Then, the arc welding device 101 is energized to generate an arc between the welding clamp 1023 and the welding rod. The heat generated by the arc discharge melts the welding rod, and the reheat boiler martensitic heat-resistant steel is welded.

[0058] S4. During mobile welding, the upper armrest 2011 and the auxiliary wheel 2013 cooperate to drive the electrode angle adjustment assembly 203 and the adjustment frame 205 to move, so that the second piston cylinder 2027 and the second piston rod 2029 drive the welding clamp 1023 to move, and the welding clamp 1023 drives the welding rod to move to perform welding operations.

[0059] S5. During the welding process, the length of the welding rod gradually shortens. At this time, when the upper handrail 2011 is moved, the one-way wheel 2061 is rotated by toggling the handle 2064, so that the one-way wheel 2061 drives the chain 2062 to move, and the chain 2062 drives the protrusion 207 to move. The protrusion 207 pushes the first piston rod 2022 and the first piston 2021 to move, and the first piston 2021 drives the first spring 2023 to deform, so that the liquid in the first piston cylinder 2024 enters the second piston cylinder 2027 through the delivery pipe 2025. At this time, the second piston rod 2029 is driven by hydraulic pressure to move, and the second piston rod 2029 drives the welding clamp 1023 to move downward, causing the roller 2084 to squeeze downward and against the inclined surface 204, so that the roller 2084 drives the slide bar 2082 to move, and the slide bar 2082 drives the limit block 2081 to move. At the same time, the second spring 2085 is deformed, so that the limit block 2081 is located at the two clamping handles of the welding clamp 1023. At this time, the welding clamp 1023 is limited, so that the welding rod can move downward stably and at a uniform speed, thereby performing a continuous welding operation;

[0060] S6. After welding is completed, by continuously rotating the one-way wheel 2061, the chain 2062 drives the protrusion 207 to move in a circular motion and reset. At the same time, the first spring 2023 drives the first piston rod 2022 to reset, and the hydraulic pressure drives the second piston rod 2029 to reset upward, so that the welding clamp 1023 is reset, and at the same time, the roller 2084 is separated from the inclined surface of the inclined surface 204 upward. At this time, the second spring 2085 drives the slide bar 2082 to reset, so that the limit block 2081 is away from the clamping handle of the welding clamp 1023, and then the next round of welding operation is carried out.

[0061] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A reheat boiler martensitic heat-resistant steel welding device, comprising an arc welding mechanism, characterized in that: The arc welding mechanism is connected to an arc welding auxiliary mechanism; the arc welding mechanism includes an arc welding device, and the arc welding device is connected to an arc welding assembly; the arc welding auxiliary mechanism includes a walking assembly, a one-way transmission assembly and a hydraulic control assembly are provided in the walking assembly, the one-way transmission assembly is connected to a protrusion, the protrusion contacts one end of the hydraulic control assembly, and the protrusion is driven to move forward by the one-way transmission assembly so that when the welding rod melts and shortens, the protrusion controls the hydraulic control assembly to push down the welding rod clamped by the arc welding assembly to move downward at a uniform speed to perform arc welding operation; one end of the walking assembly is provided with a welding rod angle adjustment assembly, one side of the welding rod angle adjustment assembly is connected with an adjusting frame, the adjusting frame is fixedly connected to the bottom of the second piston cylinder of the hydraulic control assembly, a second piston is provided inside the second piston cylinder, a second piston rod is fixedly connected to the bottom of the second piston, the second piston rod passes through the second piston cylinder and is connected to one end of the arc welding assembly, the arc welding assembly is supported and limited by a limiting assembly, and one end of the limiting assembly contacts the inclined strip, and the inclined strip is fixedly connected to the adjusting frame; The arc welding assembly includes a terminal, which is plugged into the arc welding equipment, and one end of the terminal is connected to a connecting wire, which is fixedly connected to the top of the second piston cylinder through a wire rack, and one end of the connecting wire is connected to a welding clamp, which clamps a welding rod, and one end of the welding clamp is fixedly connected to the bottom end of the second piston rod; The one-way transmission assembly includes two one-way wheels, which are rotatably mounted on two wheel frames through two bearings. The wheel frames are fixedly connected to the upper handrail. The two one-way wheels are connected by a chain transmission. The protrusion is installed on the chain. One of the one-way wheels passes through the upper handrail and is fixedly connected to the turning handle. The hydraulic control assembly includes a first piston cylinder, which is installed on the upper armrest. A first piston is provided inside the first piston cylinder. A first spring is fixedly connected between the first piston and the side wall of the first piston cylinder. A first piston rod is fixedly connected to one side of the first piston. The first piston rod passes through the first piston cylinder and overlaps with the protrusion. A delivery pipe is connected above one end of the first piston cylinder, and the delivery pipe is connected to the second piston cylinder. The section where the delivery pipe connects to the second piston cylinder is a hose structure, and a certain length is reserved. A plurality of fixings are installed on the delivery pipe, and the connecting wires are passed through and installed on the plurality of fixings. The limiting assembly includes a guide sleeve, which is fixedly connected to one end of the welding clamp. A slide rod is slidably connected to the guide sleeve. Both ends of the slide rod are fixedly connected to rollers and limit blocks. The rollers are in contact with the inclined surface. A second spring is fixedly connected between the limit block and the guide sleeve. The length of the limit block is the same as the distance between the two clamping handles of the welding clamp.

2. The reheat boiler martensitic heat-resistant steel welding device according to claim 1, characterized in that: The walking assembly comprises an upper handrail, a bracket is fixedly installed below the upper handrail, and four auxiliary wheels are rotatably installed at the four ends below the bracket.

3. The reheat boiler martensitic heat-resistant steel welding device according to claim 2, characterized in that: The welding rod angle adjustment assembly includes a connecting joint and a middle frame. The upper and lower sides of the middle frame are fixedly connected with connecting parts, and the two connecting parts are fixedly connected to the adjustment frame; a first rotating shaft and a second rotating shaft are installed on the connecting joint through each other, and the middle frame is rotatably installed on the second rotating shaft through a bearing. The second rotating shaft passes through the adjustment frame and is fixedly connected to the operating head, and a second fixing bolt is provided on the operating head.

4. The reheat boiler martensitic heat-resistant steel welding device according to claim 3, characterized in that: The first rotating shaft is rotatably mounted on two fixed plates through two bearings. The two fixed plates are fixedly connected to one end of the upper armrest. Both ends of the first rotating shaft are fixedly connected to connectors, and the connectors are provided with first fixing bolts.

5. The method for using the reheat boiler martensitic heat-resistant steel welding device according to claim 4, characterized in that: The following steps are involved: S1. During arc welding, the welding rod is clamped by the welding clamp and the first rotating shaft is rotated as needed. The first rotating shaft drives the middle frame to adjust via the connecting joint and the second rotating shaft. The middle frame drives the adjustment frame and the second piston cylinder via the connecting member to adjust the angle. The welding clamp drives the welding rod to adjust the angle. After adjustment, the first fixing bolt is tightened on the fixing plate to achieve angular positioning. S2. Then, according to the welding angle requirement, the adjusting frame is directly rotated to make the connecting member drive the middle frame to rotate on the second rotating shaft, so that the adjusting frame drives the welding clamp and welding rod to be adjusted, and then the second fixing bolt is tightened on the adjusting frame to fasten them, thereby meeting the welding requirements of different angles; S3. After the welding rod is adjusted in angle, the bottom end of the welding rod corresponds to the welding position. Then, the arc welding equipment is energized to generate an arc between the welding clamp and the welding rod. The heat generated by the arc discharge melts the welding rod, and the reheat boiler martensitic heat-resistant steel is welded. S4. During mobile welding operations, the upper armrest and auxiliary wheels cooperate to drive the electrode angle adjustment assembly and the adjustment frame to move, so that the second piston cylinder and the second piston rod drive the welding clamp to move, and the welding clamp drives the electrode to move to perform welding operations; S5. During the melting and welding process of the welding rod, its length gradually shortens. At this time, when the upper handrail is moved, the one-way wheel is driven to rotate by toggling the turning handle, so that the one-way wheel drives the chain to move, and the chain drives the convex block to move. The convex block pushes the first piston rod and the first piston to move, and the first piston drives the first spring to deform, so that the liquid inside the first piston cylinder enters the second piston cylinder through the delivery pipe. At this time, the second piston rod is driven by hydraulic pressure to move, and the second piston rod drives the welding clamp to move downward, so that the roller is squeezed downward and the inclined strip is squeezed, so that the roller drives the slide rod to move, and the slide rod drives the limit block to move. At the same time, the second spring is deformed so that the limit block is located at the two clamping handles of the welding clamp. At this time, the welding clamp is limited, so that the welding rod moves downward stably and at a uniform speed, and then continuous welding operation is carried out; S6. After welding is completed, the one-way wheel is continuously rotated to make the chain drive the protrusion to move in a circular motion and reset. At the same time, the first spring drives the first piston rod to reset, and the hydraulic pressure drives the second piston rod to reset upward, so that the welding clamp is reset and the roller is lifted off the inclined surface of the inclined strip. At this time, the second spring drives the slide rod to reset, so that the limit block is away from the clamping handle of the welding clamp, and then the next round of welding operation is carried out.

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