Split pile pipe automatic welding head

Abstract

The present invention relates to a split-type automatic pile pipe welding machine head, comprising a travel base block and a welding control module. The travel base block's reference travel wheel assembly is disposed in the middle of the top of the travel base block, an upper travel wheel assembly is disposed on one side of the longitudinal length of the top of the travel base block, two lower elastic travel wheel assemblies are disposed on both sides of the longitudinal length of the bottom of the travel base block, the travel base frame of the travel base block is fixedly connected to the back of a welding control base plate of the welding control module, the machine head drive assembly of the welding control module is mounted on the other side of the longitudinal direction of the top of the front of the travel base block, the machine head connection assembly is mounted on the top of the back of the welding control base plate, a welding gun position adjustment module is mounted on one side of the longitudinal direction of the welding control base plate, a welding gun is mounted at the lower end of the welding gun position adjustment module, and a welding operation box is mounted on the front of the welding control base plate. The present invention can improve the quality and efficiency of automatic pile pipe horizontal welding construction.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a split type pile pipe automatic welding head. Background Art

[0002] At present, the automatic welding of pile pipes mainly adopts the multi-layer and multi-pass horizontal welding process of metal arc welding or self-shielded flux-cored wire welding. The welding equipment mainly adopts a horizontal track joint double arc plate transition flexible arc welding track + walking welding head, which is a pipeline automatic welding equipment mode; its working method is that before welding, the welder installs a flexible track parallel to the weld above the weld, and then installs the walking welding head on the track. The head moves along the track, and the welder adjusts the welding gun installed on the head to track the weld.

[0003] In the process of implementing the present invention, the applicant discovered that the prior art has at least the following deficiencies:

[0004] In the existing technology, since the machine head is mounted on the track, the welder needs to hold the walking welding integrated machine head, adjust the bottom of the machine head in advance according to the standard diameter of the arc track that matches the pile pipe to be welded, and accurately align and clamp the 4 or 5 walking and driving wheels that are at a certain angle to each other on both sides of the thin plate arc track to ensure the stability and reliability of the machine head movement. This installation method requires that the roundness deviation of the pile pipe is small, the angle deviation of the machine head walking wheel is properly adjusted, and the welder is conscientious and careful in adjustment to meet the specified installation requirements. However, due to the large ovality deviation of the thick-walled and large-diameter pile pipes on site, track deformation, welders' desire for speed and labor saving, and complex and harsh on-site construction conditions, the on-site installation of the machine head is prone to forceful clamping, resulting in the positioning accuracy between the machine head and the track failing to meet the specified requirements. Problems such as machine head walking swing, jamming, and slipping occur during welding, affecting welding quality and efficiency.

[0005] In addition, the on-site construction also proposed the requirements of reducing the weight of the machine head and lowering the labor intensity to increase the convenience of machine head installation and improve the installation accuracy.

[0006] In order to overcome the above-mentioned deficiencies of existing pile pipe automatic welding equipment and meet relevant needs, the applicant has developed a split type pile pipe automatic welding head. Summary of the Invention

[0007] In view of the problems existing in the above-mentioned prior art, the present invention provides a split type pile pipe automatic welding head to overcome the shortcomings of the existing pile pipe automatic welding equipment.

[0008] The technical solution of the present invention is:

[0009] A split type pile pipe automatic welding machine head, characterized in that the welding machine head includes a walking bottom block and a welding control module, wherein:

[0010] The walking base block includes a walking base, a reference walking wheel assembly, an upper walking wheel assembly and a lower elastic walking wheel assembly, the front ends of the reference walking wheel assembly, the upper walking wheel assembly and the two lower elastic walking wheel assemblies are all provided with freely rotatable double-groove walking wheels, the reference walking wheel assembly is arranged in the middle of the top of the walking base block; the upper walking wheel assembly is arranged on one side of the longitudinal length of the top of the walking base block, and the two lower elastic walking wheel assemblies are arranged on both sides of the longitudinal length of the bottom of the walking base block;

[0011] The welding control module includes a welding control base plate, a head drive assembly, a head connection assembly, a welding gun position adjustment module, a welding gun and a welding operation box. The walking base frame of the walking base block is fixedly connected to the back of the welding control base plate. The head drive assembly is installed on the other side of the length direction of the top of the front of the walking base block. The head connection assembly is installed on the top of the back of the welding control base plate. The welding gun position adjustment module is installed on one side of the length direction of the welding control base plate. The welding gun is installed at the lower end of the welding gun position adjustment module. The welding operation box is installed on the front of the welding control base plate.

[0012] Furthermore, an upper reference running wheel mounting groove is sequentially provided in the middle of the top of the walking base block from bottom to top, the upper reference running wheel mounting groove is semicircular, the reference running wheel assembly is fixed in the upper reference running wheel mounting groove of the walking base block by a reference wheel fixing clip, the double-groove running wheel of the reference running wheel assembly is fixed in the middle of the upper back side of the walking chassis, and the other end of the reference running wheel assembly does not protrude from the front surface of the walking chassis;

[0013] A first leg is provided on one side of the longitudinal length of the top of the walking base block, and the upper walking wheel assembly is installed at the bottom of the first leg;

[0014] Second legs are provided on both sides of the longitudinal length of the bottom of the walking base block, and the two lower elastic walking wheel assemblies are respectively installed on the top of the two second legs;

[0015] The double-grooved walking wheels of the upper walking wheel assembly and the two lower elastic walking wheel assemblies are both located on the back of the walking frame. The double-grooved walking wheels of the upper walking wheel assembly have horizontal angle and front and rear position adjustment functions. The double-grooved walking wheels of the two lower elastic walking wheel assemblies on the two legs on both sides of the lower part of the walking frame have horizontal angle, front and rear position and up and down position adjustment functions, and can move elastically up and down.

[0016] Furthermore, the welding head further comprises an upper pressure arm assembly and an upper pressure arm pressing assembly;

[0017] A rectangular slot for installing a welding control module is provided in the middle of the upper part of the walking chassis, and the rectangular slot is provided above the upper reference walking wheel mounting slot. Upper ears for installing an upper pressure arm assembly and a base for installing an upper pressure arm pressing assembly are designed on both sides of the upper part of the rectangular slot;

[0018] The upper pressure arm assembly includes an upper pressure arm, an upper pressure arm handle and a group of elastic top column assemblies, the upper pressure arm is a rectangular slot structure, one end of the upper pressure arm is rotatably connected to the upper support ear, the group of elastic top column assemblies is relatively arranged in the middle of the upper pressure arm, each of the elastic top column assemblies includes a top column and an elastic unit, the lower end of the top column is arranged in the rectangular slot, the upper end of the top column passes through the upper pressure arm, the elastic unit is arranged between the upper pressure arm and the lower end of the top column, and the upper pressure arm handle is arranged on the top of the upper pressure arm;

[0019] The upper pressure arm pressing assembly includes a U-shaped pressing frame and a lower pressure stud handle. The U-shaped pressing frame is mounted on the outside of the other end of the upper pressure arm. Both sides of the U-shaped pressing frame are connected to the base at the top of the walking chassis. The lower pressure stud handle is threaded through the middle of the top of the U-shaped pressing frame, and the lower pressure stud handle is tightly positioned on the other end of the upper pressure arm.

[0020] Furthermore, the welding head also includes a walking bottom block positioning assembly, and the walking bottom block positioning assembly includes a positioning base, an adjustable clamping arm, a positioning elastic element and a positioning shaft stud. The positioning base is fixedly arranged in the middle of the other side of the longitudinal length of the walking bottom block, and the adjustable clamping arm is rotatably connected to the positioning base through the positioning shaft stud. The positioning elastic element is arranged between the positioning base and the adjustable clamping arm, and the positioning elastic element is sleeved on the positioning shaft stud.

[0021] Furthermore, a lower reference walking wheel mounting groove is provided in the middle of the bottom of the walking bottom block;

[0022] Furthermore, the welding head also includes a lower fixing assembly including a lower fixing base, two lower fixing arms and two lower fixing stud handles, the lower fixing base is fixedly arranged in the lower reference walking wheel mounting groove of the walking chassis, and the bottom of the lower fixing base is provided with two relative lower supporting ears, the lower fixing arms and the lower supporting ears are correspondingly arranged, and the lower fixing arms are rotatably connected to the corresponding lower supporting ears through a lower pin shaft, the lower pin shaft is arranged in the horizontal direction, the lower fixing stud handles and the lower fixing arms are correspondingly arranged, and the lower fixing stud handles are threadedly connected to the corresponding lower pin shaft.

[0023] Furthermore, two screw holes for installing the machine head drive assembly are provided on the upper part of one side in the longitudinal direction of the welding control base plate, two screw holes for installing the machine head connection assembly are provided on the upper middle part of the welding control base plate, two U-shaped through grooves for connecting and fixing with the walking bottom block are provided at the lower end of the welding control base plate, and a mounting hole for a welding gun position adjustment module is provided on the lower part of the other side in the longitudinal direction of the welding control base plate;

[0024] The two lower fixing arms of the lower fixing assembly can be operably inserted into the corresponding U-shaped through slots, so that the two lower fixing stud handles of the lower fixing assembly can press the welding control base plate.

[0025] Furthermore, the head drive assembly includes a friction drive wheel driven to rotate by a reduction motor, the horizontal angle and front and rear positions of the friction drive wheel are fixed and adjustable, and the upper and lower positions of the friction drive wheel are elastically positioned.

[0026] Furthermore, each of the head connection components includes a positioning connection column, a limit ring, a compression elastic element and a compression support seat, wherein:

[0027] One end of the positioning connecting column is provided with a convex cylindrical section, and the two convex cylindrical sections of the positioning connecting column are inserted into the rectangular slots of the walking chassis of the walking bottom block, and the elastic top column assembly of the upper pressure arm assembly of the walking bottom block presses downward on the convex cylindrical sections of the two positioning connecting columns, so that the head connecting assembly is positioned on the bottom of the rectangular slot of the walking chassis;

[0028] The limiting retaining ring, the pressing elastic element and the pressing support seat are sequentially arranged on the other end of the positioning connecting column along the axial direction of the positioning connecting column, the end of the limiting retaining ring facing away from the pressing elastic element is a slope, and the end of the limiting retaining ring facing the pressing elastic element is a flat surface, the pressing elastic element is arranged between the limiting retaining ring and the pressing support seat, and the pressing support seat is threadedly connected to the positioning connecting column;

[0029] The limiting rings of the two machine head connecting assemblies elastically press against the back of the bottom of the rectangular slot of the traveling chassis, so that the back of the welding control base plate of the welding control module automatically sticks to the front of the traveling chassis.

[0030] Furthermore, the welding gun position adjustment module includes a welding gun up and down adjustment block, a front and rear adjustment block connecting bent arm installed at the lower end of the welding gun up and down adjustment block, a welding gun front and rear and angle adjustment block connected to the lower end of the front and rear adjustment block connecting bent arm, and a welding gun clamping block installed at the front end of the welding gun front and rear and angle adjustment block.

[0031] Furthermore, the welding control module also includes a lifting handle, and the lifting handle is fixed to the upper middle part of the front side of the welding control base plate.

[0032] The beneficial effects of the present invention include at least:

[0033] The present invention discloses a split-type pile pipe automatic welding machine head, which is split into two modules: a walking base block and a welding control module that are independently connected. Before construction, the walking base block can be accurately installed on the pile pipe automatic welding flexible track according to the specified installation and positioning requirements, forming an integral body with it. During construction, it is installed and positioned simultaneously with the flexible track. The welding control module adopts a lightweight on-site installation method of being fixed on the walking base block by a straight-plug card, which can significantly improve the on-site installation and positioning accuracy between the welding machine head and the track, improve the walking stability and reliability of the welding machine head during the welding process, reduce the on-site installation weight of the welding machine head, and the head installation and positioning requirements for the welder, and can complete the on-site installation of the welding machine head easily and quickly, reducing the automatic welding auxiliary operation time and the welder's labor intensity, thereby improving the quality and efficiency of pile pipe automatic horizontal welding construction. In addition, the walking base block can also be used as a welding track support and protection seat to avoid problems such as slipping and jamming of the welding machine head caused by damage to the walking edges on both sides of the track during on-site installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 is an axial schematic diagram of this embodiment;

[0036] Figure 2 1 is an axial schematic diagram of the walking bottom block of this embodiment;

[0037] Figure 3 1 is a schematic front view of the traveling chassis of this embodiment;

[0038] Figure 4 1 is a schematic diagram of the axial side of the reference running wheel assembly of this embodiment;

[0039] Figure 5 This is a schematic diagram of the upper traveling wheel assembly from the axle side of this embodiment;

[0040] Figure 6 1 is a schematic diagram of the lower elastic travel wheel assembly from the axial side of this embodiment;

[0041] Figure 7 1 is a schematic diagram of the axial side of the lower clamping assembly of this embodiment;

[0042] Figure 8 is a partially cutaway axial schematic diagram of the upper pressure arm assembly of this embodiment;

[0043] Figure 9 1. This is a schematic diagram of the axial side of the upper pressure arm pressing assembly of this embodiment;

[0044] Figure 10 This is an axial schematic diagram of the walking bottom block positioning assembly of this embodiment;

[0045] Figure 11 This is a schematic diagram of the welding control module of this embodiment from the front view axis side;

[0046] Figure 12 This is a schematic diagram of the welding control module from the rear axle perspective of this embodiment;

[0047] Figure 13 This is a front view schematic diagram of the welding control base plate of this embodiment;

[0048] Figure 14 This is a partial axial schematic diagram of the head drive assembly of this embodiment;

[0049] Figure 15 This is a schematic axial view of the head connection assembly of this embodiment;

[0050] Figure 16 1 is a schematic diagram of the welding gun position adjustment module of this embodiment from the axial side;

[0051] Figure 17 Schematic diagram of the installation and working process of this embodiment.

[0052] In the attached figure:

[0053] 1. Walking base, 2. Welding control module, 11. Walking base, 12. Reference walking wheel assembly, 13. Reference wheel fixing card, 14. Upper walking wheel assembly, 15. Lower elastic walking wheel assembly, 16. Lower clamping assembly, 17. Upper pressure arm assembly, 18. Upper pressure arm pressing assembly, 19. Walking base block positioning assembly, 21. Welding control base plate, 22. Machine head drive assembly, 23. Machine head connection assembly, 24. Welding gun position adjustment module, 25. Welding gun, 26. Welding operation box, 27. Lifting handle, 101. First leg, 102. Second leg, 103. Rectangular through hole, 104. Rectangular through slot, 105. Lower reference walking wheel mounting slot, 106. Upper reference walking wheel mounting slot, 107. Rectangular slot, 108. Upper support ear, 109. Base, 161. Lower clamping base, 162. Lower fixed arm, 163. Pin, 1 64. Lower clamping stud handle, 165 lower support ear, 171. Upper pressure arm, 172. Elastic top column assembly, 1721. Top column, 1722. Elastic unit, 173. Upper pressure arm handle, 181. U-shaped pressure frame, 182. Lower pressure stud handle, 191. Positioning base, 192. Adjustable clamping arm, 193. Positioning elastic element, 194. Positioning shaft stud, 211. First screw hole, 212. Second screw hole, 213. U-shaped through slot, 214. Mounting hole, 231. Positioning connecting column, 232. Limiting ring, 233. Compression elastic element, 234. Compression support seat, 241. Welding gun up and down adjustment block, 242. Front and rear adjustment block connecting bent arm, 243. Welding gun front and rear and angle adjustment block, 244. Welding gun clamping block, 1000. Split pile pipe automatic welding head, 1001. Flexible circular ring track, 1002. Pile pipe. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] The installation of the machine head and track of the existing pile pipe automatic welding equipment adopts an installation method in which multiple axial directions at the bottom of the machine head point to the axis of the pile pipe and are angled to walk double-groove groove wheels, which align and clamp the two sides of the transition thin plate arc flexible track of the double-arc plate track joint. In addition, the machine head is relatively high and heavy, and each weld needs to be installed in the same installation method. It is difficult to meet the specified deviation requirements during on-site installation, which is the main reason for the shortage of existing equipment. The solution adopted in this embodiment is to split the integrated walking welding machine head of the existing equipment into two relatively independent on-site connection and installation modules: a walking base block and a welding control module. When used on-site, the walking base block is connected to the flexible track as one, and the welding control module is installed on the walking base block. In this way, for the construction of pile pipes of a certain diameter, the corresponding walking base block and the flexible track only need to be clamped once according to the specified accuracy requirements before construction, forming a well-assembled and positioned one. During construction, the walking base block is installed and removed together with the flexible track, changing the existing machine head track clamping method to a simple downward insertion positioning and fixing method without strict accuracy requirements for the welding control module and the walking base block, thereby improving the clamping accuracy of the machine head and the arc flexible track, ensuring the stability and reliability of the machine head welding movement, reducing the weight of the machine head on-site installation, greatly improving its ease of on-site installation, and reducing the labor intensity of the welder. In addition, the pile pipe automatic welding equipment is generally equipped with 2 to 4 machines per track, and the walking base block also serves as a protective support frame for the track, avoiding the problem that the track walking along the current on-site construction is directly placed flat, which is prone to damage and damage, affecting the stability of the machine head.

[0056] The main issues that need to be addressed in the design of this embodiment include the functional division and design of the walking base block and the welding control module, the quick and easy positioning and connection and tightening of the two modules, the design of a driving walking system with accurate positioning and smooth and reliable walking, and the lightweight design of components.

[0057] According to the technical solution of this embodiment, since the walking bottom block and the track are installed and disassembled together during construction, in order to ensure the durability and reliability of the walking bottom block, the walking bottom block adopts a high-strength pure mechanical design.

[0058] The walking frame of the walking base block adopts a three-legged X-shaped plate frame structure to ensure the strength and lightness of the walking frame. At the same time, taking into account the compactness of the functional components to be installed on it, these functional components are placed within the high-strength walking frame plane to protect them from bumps and damage during installation and movement, thereby enhancing the durability of the walking base block; the central rectangular through hole and the central rectangular through groove on the back side are set on the walking base frame to ensure the passability of the walking base block at the flexible track joint while reducing the installation height between the walking base block and the track, thereby reducing the installation height of the machine head relative to the track and reducing the bending moment of the machine head on the track. Different from the existing pile pipe automatic welding equipment which mostly adopts a 4-wheel travel drive system without actual fixed installation reference, which has 3 angle-adjustable travel groove wheels at 4 corners and 1 angle-adjustable driving cylindrical friction wheel, or a 5-wheel travel drive system with 4 angle-adjustable travel groove wheels and 1 vertical track elastically fixed driving cylindrical friction wheel in the middle of one side; the present invention adopts 1 fixed reference travel groove wheel, 1 angle-adjustable fixed travel groove wheel, 2 angle-adjustable elastically positioned travel groove wheels and 1 angle-adjustable elastically positioned driving cylindrical friction wheel (installed on the welding control module) to form a 5-wheel travel drive system; the reference travel groove wheel is fixed to the middle of the upper side of the travel base block, 1 angle-adjustable fixed travel groove wheel is fixed to the inner side of the left leg of the travel chassis, 2 angle-adjustable elastically positioned travel groove wheels are elastically positioned on the inner sides of the two legs on the lower side of the travel chassis, and 1 angle-adjustable elastically positioned driving cylindrical friction wheel The wheel is installed on the upper right part of the welding control module. After the welding control module is connected and fixed to the walking bottom block, it is elastically positioned on the upper right part of the walking chassis; except for the reference walking groove wheel, the other four wheels are based on the reference walking groove wheel. According to the track diameter and the curvature between it and the reference walking groove wheel, their positioning angles are adjusted to point to the pile pipe axis, and their clamping positions are adjusted so that their wheel grooves or wheel bodies are clamped or pressed on the side edge of the track as required; two angle-adjustable elastically positioned walking groove wheels and one angle-adjustable elastically positioned driving cylindrical friction wheel are used to ensure the adaptability of the walking system to the installation and processing deviations of the track and the machine head; the advantage of this walking drive system design is that the walking drive system is installed and positioned based on the walking reference walking groove wheel, which can improve the installation accuracy of the walking bottom block and even the entire machine head relative to the track, and ensure the walking stability and reliability during the welding process of the machine head.After the traveling base is fixed to the welding control module, the split machine head can utilize the self-sustaining force of the reduction motor of the drive motor wheel module of the welding control module's head drive assembly to limit the free movement of the head along the track. The traveling base, which is not connected to the welding control module, is connected to the track only via four unrestricted traveling wheel assemblies. To limit the free movement of the traveling base along the track in this state, a traveling base positioning assembly is provided on the left or right side of the traveling base. This assembly utilizes a compact structure in which a clamping arm rotates, one end of which is elastically positioned on two angled positioning surfaces of the positioning base, while the other end of the clamping arm engages a radial positioning hole on the track surface. When the clamping arm is positioned on a straight surface, it lies flat on the side of the traveling base and disengages from the track, allowing the traveling base to move freely along the track. When the clamping arm is positioned on an inclined surface, its end droops and engages a radial positioning hole on the track surface, positioning the traveling base at a specific circumferential position on the track. To reduce the weight of the welding control module, an upper pressure arm assembly, an upper pressure arm fixing assembly, and a lower clamping assembly are all provided on the traveling base.

[0059] The present invention is further described in detail by taking a split type pile pipe automatic welding machine head adapted to pipe diameters of 700 to 3000 mm as an example.

[0060] See Figure 1 The split pile pipe automatic welding machine head of the present invention is composed of a walking bottom block 1 and a welding control module 2.

[0061] See Figure 2 The walking bottom block 1 is composed of a walking frame 11, a reference walking wheel assembly 12, a reference wheel fixing card 13, an upper walking wheel assembly 14, a lower elastic walking wheel assembly 15, a lower fixing assembly 16, an upper pressure arm assembly 17, an upper pressure arm pressing assembly 18 and a walking bottom block positioning assembly 19. The front ends of the reference walking wheel assembly 12, the upper walking wheel assembly 14 and the two lower elastic walking wheel assemblies 15 all have freely rotatable double-groove walking wheels. The reference walking wheel assembly 12 is arranged in the middle of the top of the walking bottom block 1, the upper walking wheel assembly 14 is arranged on one side of the longitudinal length of the top of the walking bottom block 1, and the two lower elastic walking wheel assemblies 15 are arranged on both sides of the longitudinal length of the bottom of the walking bottom block 1.

[0062] See Figures 2-3 The walking frame 11 is a three-legged X-shaped plate frame structure with one leg missing at the upper corner on one side in the length direction. It includes a first leg 101 provided on the other side of the top of the walking frame 11 in the length direction, and two second legs 102 are respectively provided on both sides of the bottom of the walking frame 11 in the length direction, thereby forming a three-legged X-shaped plate frame structure.

[0063] See Figures 2-3, a rectangular through hole 103 is designed in the middle of the walking chassis 11 of this embodiment, and a rectangular through groove 104 is designed in the middle of the back; a semicircular lower reference walking wheel mounting groove 105 is designed on its upper bottom, and a semicircular upper reference walking wheel mounting groove 106 is designed on the bottom of the upper middle lower groove; a rectangular slot 107 (width 80mm) for installing the welding control module 2 is provided above the upper reference walking wheel mounting groove 106, and upper support ears 108 for installing the upper pressure arm assembly 17 and a base 109 for installing the upper pressure arm pressing assembly 18 are designed on both sides of the upper part of the rectangular slot 107, and the parts including the rectangular slot, the support ears for installing the upper pressure arm assembly 17 and the base for installing the upper pressure arm pressing assembly 18 are milled thin from the front and back sides, so that the installed upper pressure arm assembly 17 and the upper pressure arm pressing assembly 18 and their fasteners do not protrude from the front surface of the walking chassis 11.

[0064] See Figures 4-6 In this embodiment, the front ends of the reference running wheel assembly 12, the upper running wheel assembly 14 and the two lower elastic running wheel assemblies 15 all have freely rotatable double-groove running wheels.

[0065] See Figure 7 The lower fixing assembly 16 consists of a lower fixing base 161, two lower fixing arms 162, two pins 163 and two lower fixing stud handles 164. The lower fixing base 161 is fixedly set in the lower reference walking wheel mounting groove 105 of the walking frame 11. The lower fixing base 161 is a single-sided bottom plate with two lower support ears 165 with a vertical fixed spacing (80mm) in the middle. The two lower fixing arms 162 are each positioned on the two lower support ears 165 of the lower fixing base 161 through a pin 163 and can rotate around the lower pin 163. The lower fixing stud handle 164 is threadedly connected to the lower fixing arm 162.

[0066] See Figure 8 The upper pressure arm assembly 17 consists of an upper pressure arm 171, two groups of elastic top column assemblies 172 and an upper pressure arm handle 173. The upper pressure arm 171 is a rectangular slot structure with a pin shaft connecting hole at one end. The two groups of elastic top column assemblies 172 are positioned at a certain distance (center distance 68mm, width 80mm) in the longitudinal middle of the upper pressure arm 171. Each elastic top column assembly 172 includes a top column 1721 and an elastic unit 1722. The lower end of the top column 1721 is set in the rectangular slot 107, and the bottom end surface of the top column 1721 protrudes from the lower edge of the upper pressure arm 181 (elastic protrusion 2mm). The upper end of the top column 1721 passes through the upper pressure arm 171, the elastic unit 1722 is set between the upper pressure arm 171 and the lower end of the top column 1721, and the upper pressure arm handle 173 is set on the top of the upper pressure arm 171.

[0067] See Figure 9The upper pressing arm pressing assembly 18 is composed of a U-shaped pressing frame 181 with a threaded through hole on the top and a lower pressing stud handle (182) with a stud at the bottom, wherein the U-shaped pressing frame 181 is sleeved on the outside of the other end of the upper pressing arm 171, and both sides of the U-shaped pressing frame 181 are connected to the base at the top of the walking chassis 11, and the lower pressing stud handle 182 is threaded through the middle of the top of the U-shaped pressing frame 181, and the lower pressing stud handle 182 is tightly positioned on the other end of the upper pressing arm 171.

[0068] See Figure 10 The walking bottom block positioning assembly 19 consists of a positioning base 191 with two positioning surfaces at a certain angle (150°) at one end, an adjustable arm 192 with adjustable length and angle, a positioning elastic element 193 and a positioning shaft stud 194. The positioning base 191 is fixedly arranged in the middle of the other side of the longitudinal length of the walking bottom block 1, and the adjustable arm 192 is rotatably connected to the positioning base 191 through the positioning shaft stud 194 and can rotate around the positioning shaft stud 194. The positioning elastic element 193 is arranged between the positioning surface of the positioning base 191 and the boss of the adjustable arm 192. The positioning elastic element 193 is sleeved on the positioning shaft stud 194 to realize the two-position positioning of the adjustable arm 192.

[0069] See Figures 2 to 10 The reference running wheel assembly 12 of this embodiment is positioned in the semicircular upper reference running wheel mounting groove of the walking chassis 11, and is fixed to the walking chassis 11 with a reference wheel fixing card 13 and screws. Its double-groove running wheel is fixed in the middle of the upper back of the walking chassis 11, and the other end does not protrude from the front surface of the walking chassis 11 (1mm lower). An upper running wheel assembly 14 and two lower elastic running wheel assemblies 15 are all installed on the three leg ends of the walking chassis 11, and the double-groove running wheels of the three assemblies are all located on the back of the walking chassis 11. The double-groove running wheel of an upper running wheel assembly 14 installed at the end of the upper leg of the walking chassis 11 has the functions of adjusting the horizontal angle (-30°) and the front and rear position (26mm). The two lower elastic running wheels installed at the ends of the two legs at the lower part of the walking chassis 11 The double-groove walking wheels of the walking wheel assembly 15 have the functions of adjusting the horizontal angle (-30°), front and rear position (26mm) and up and down position (7mm), and can move elastically up and down (±1.5mm). The lower clamping assembly 16 is fixed to the upper concave bottom surface in the middle of the lower part of the walking frame 11 with screws. The upper pressure arm assembly 17 and the upper pressure arm pressing assembly 18 are each connected to the upper pressure arm assembly installation upper support ear and the upper pressure arm pressing assembly installation base of the walking frame 11 through a pin bolt. The walking bottom block positioning assembly 19 is fixed to one side of the walking frame 11 by a positioning shaft stud 194 and a screw, forming a flat front and 4 double-groove walking wheels protruding from the back, which can adapt to flexible circular arc tracks with double arc plate joints of different diameters (≥600mm). Flat, purely mechanical walking bottom block 1.

[0070] See Figure 11 The welding control module 2 of this embodiment is composed of a welding control base plate 21, a head drive assembly 22, a head connection assembly 23, a welding gun position adjustment module 24, a welding gun 25, a welding operation box 26 and a lifting handle 27.

[0071] See Figure 12 as well as Figure 13 The welding control base plate 21 has two first screw holes 211 for mounting the machine head drive assembly 22 on one upper portion along its length, two second screw holes 212 (68mm center-to-center) for mounting the machine head connection assembly 23 on its upper middle portion, and two U-shaped through slots 213 (80mm spacing) at its lower end for connecting and fixing to the travel base block 1. Four mounting holes 214 for the welding gun position adjustment module 24 (countersunk back end) are provided at its lower portion along the other lengthwise side. The two lower fixing arms 162 of the lower clamping assembly 16 can be operably inserted into the corresponding U-shaped through slots 213, allowing the two lower clamping stud handles 164 of the lower clamping assembly 16 to press against the welding control base plate 21.

[0072] See Figure 14 The head drive assembly 22 adopts an elastic cantilever drive module design, and its front end is provided with a cylindrical friction drive wheel driven by a reduction motor. The friction drive wheel has a fixed and adjustable horizontal angle (-30°) and front and rear position (60mm), and an elastic positioning function of the upper and lower positions (±3mm). This is the existing technology and will not be elaborated in this embodiment.

[0073] See Figure 15 The head connection assembly 23 is composed of a positioning connection column 231 with studs at both ends and a cylindrical boss in the middle section whose length matches the thickness of the rectangular slot for installing the welding control module of the walking chassis 11, a limit ring 232 with a flat surface on one side and a sloped surface on the other side, a clamping elastic element 233 and a hollow clamping support seat 234 with an internal thread at one end. The limit ring 232, the clamping elastic element 233 and the clamping support seat (234) are sequentially installed on the stud at one end of the positioning connection column 231, so that the slope side of the limit ring 232 is elastically pressed on the convex cylindrical end face of the positioning connection column 231.

[0074] See Figure 16 The welding gun position adjustment module 24 is composed of a welding gun upper and lower adjustment block 241, a front and rear adjustment block connecting bent arm 242 installed at the lower end of the welding gun upper and lower adjustment block 241, a welding gun front and rear and angle adjustment block 243 connected to the lower end of the front and rear adjustment block connecting bent arm 242, and a welding gun clamping block 244 installed at the front end of the welding gun front and rear and angle adjustment block 243. This is a prior art and will not be described in detail in this embodiment.

[0075] See Figures 11-16The machine head drive assembly 22 is cantilever mounted on the upper back side of the welding control base plate 21 in the length direction through the two machine head drive assembly mounting screw holes of the welding control base plate 21; the two machine head connection components 23 are fixed to the middle upper part of the back side of the welding control base plate 21 through the two machine head connection component mounting screw holes of the welding control base plate 21; the welding gun position adjustment module 24 is vertically fixed with (4 countersunk) screws through the welding gun position adjustment module mounting hole at the lower part of the other side of the length direction of the welding control base plate 21. It is fixed at the corresponding position on the front of the welding control base plate 21; the welding gun 25 is positioned at the lower end of the welding gun position adjustment module 24 by the welding gun clamping block 244 of the welding gun position adjustment module 24; the welding operation box 26 is fixed to the front of the welding control base plate 21 (with 4 screws), and the lifting handle 27 is fixed to the middle and upper part of the front of the welding control base plate 21 (with 2 screws), forming an independent welding control module 2 that can be fixed to the walking base block 1 and has the functions of machine head travel drive, welding gun position posture adjustment and automatic welding electrical control.

[0076] See Figures 1 to 16 The split type pile pipe automatic welding machine head, the convex cylindrical section of the positioning connecting column 231 of the two machine head connecting components 23 of the welding control module 2 is inserted downward into the rectangular slot for installing the welding control module of the walking frame 11 of the walking bottom block 1, and the two groups of elastic top column components 172 of the upper pressure arm component 17 of the walking bottom block 1 are pressed downward on the convex cylindrical section of the two positioning connecting columns 231, so that they are positioned at the bottom of the rectangular slot for installing the welding control module of the walking frame 11, and the limiting rings 232 of the two machine head connecting components 23 elastically press the walking bottom block 11. The welding control module of the chassis 11 is installed with a rectangular slot at the bottom back, so that the back of the welding control base plate 21 of the welding control module 2 is automatically close to the front of the walking chassis 11, and the U-shaped pressing frame 181 of the upper pressure arm pressing assembly 18 of the walking base block 1 is sleeved on the non-pin connection end of the upper pressure arm 171 of the upper pressure arm assembly 17, and the lower pressure stud handle 182 of the upper pressure arm pressing assembly 18 is tightened and positioned at the non-pin connection end of the upper pressure arm 171, and the upper pressure arm assembly 18 and the upper pressure arm pressing assembly 19 are locked, so that the welding control module 2 and the walking base block 1 are automatically and quickly positioned and connected. The two lower fixing arms 162 of the lower clamping assembly 16 are rotated so that they are stuck in the two walking base blocks connected and fixed with the U-shaped through grooves at the lower end of the welding control base plate 21, and the two lower clamping stud handles 164 of the lower clamping assembly 16 are pressed against the welding control base plate 21, so that the welding control module 2 is fastened to the walking base block 1.

[0077] In this embodiment, the welding control module 2 and the walking base block 1 are quickly positioned and fastened by a simple four-point connection (two head connection components and two lower fixed arms and lower fixing stud handles of the lower fixing component), which is achieved through a rectangular slot for installing the welding control module in the upper middle part of the walking base frame 1, two head connection components in the upper middle part of the back of the welding control module 2, an upper pressure arm component, an upper pressure arm fixing component, a lower fixing component, and a U-shaped through groove for connecting and fixing the two walking base blocks at the lower end of the welding control base plate. After the two head connecting components of the welding control module are inserted downward into the rectangular slots for the welding control module on the walking chassis, the upper pressure arm assembly and the upper pressure arm pressing assembly are used to press down the two head connecting components to position and fix them at the bottom of the rectangular slots for the welding control module; at this time, the two positioning connecting columns of the two head connecting components are pressed flatly on the bottom surface of the rectangular slots for installing the welding control module, limiting their up and down position and rotation, and the two positioning connecting columns are leaning against the two sides of the rectangular slot to limit their left and right positions, and the limit rings of the two head connecting components are stuck on the back side of the rectangular slots for the welding control module on the walking chassis, and the compression springs of the head connecting components The elastic element and the compression support seat elastically press the limit ring, so that the two positioning connecting columns move backward, driving the welding control base plate of the welding control module that is threadedly fastened to the other end of the positioning connecting columns of the two head connecting components to move backward, so that the back of the welding control base plate is automatically close to the front of the walking frame of the walking base block, limiting the front and rear positions of the welding control module relative to the walking base block, thereby realizing rapid positioning and connection between the welding control module and the walking base block; then use the two groups of lower fixed arms and the clamping stud handles of the lower clamping assembly to position and press the welding control base plate on the walking frame through the two U-shaped through grooves at the lower end of the welding control base plate, thereby completing the four-point fastening connection between the welding control module 2 and the walking base block 1.

[0078] The upper pressure arm assembly of this embodiment adopts a rectangular groove structure upper pressure arm to ensure the strength, rigidity and lightness of the assembly; two sets of elastic top column assemblies are used to ensure that both head connection assemblies can be reliably pressed.

[0079] After the welding control module 2 is positioned and fastened to the walking base block 1, the friction drive wheel at the front end of the drive motor wheel module of the head drive block on the upper right part of the welding control module is positioned based on the installation position of the two head connection components of the welding control module. The position relative to the walking wheel of the walking base block 4 is determined, and then the angle of the drive motor card at the end of the drive arm of the head drive block and the front and rear position of the drive motor wheel module are adjusted, so that the appropriate angle and position of the drive friction wheel can be elastically pressed on the upper edge of the track to ensure reliable drive of the entire head movement. The angle position of the drive motor card and the drive motor wheel module only needs to be adjusted when the track diameter changes and the welding control module is installed for the first time.

[0080] Specific applications:

[0081] Combine Figures 1-17 The installation and working process of pile pipe automatic welding equipment with a double-arc plate joint transition flexible arc track and two split pile pipe automatic welding heads are used as an example to illustrate the installation and working process of pile pipe automatic welding with a nominal diameter of 1800mm.

[0082] Before welding, the traveling bottom block 1 of the split pile pipe automatic welding machine head 1000 of this embodiment is pre-installed with the flexible circular track 1001 of the double arc plate track joint transition of the φ1800 pile pipe.

[0083] First, the split pile pipe automatic welding machine head 1000 of the present embodiment connected as one is disassembled; the disassembly process is as follows: loosen the two lower fixing stud handles 164 of the lower fixing assembly 16 of the track walking bottom block 1, rotate the two lower fixing arms 162 of the lower fixing assembly 16, so that the two groups of lower fixing stud handles 164 and the lower fixing arms 162 are disengaged from the two walking bottom blocks connected and fixed with the U-shaped through grooves of the welding control base plate 21 of the welding control module 2, loosen the lower pressing screw of the upper pressing arm pressing assembly 18 of the track walking bottom block 1 Column handle 182, and rotate the U-shaped pressure frame 181 of the upper pressure arm pressing assembly 18 counterclockwise to loosen the upper pressure arm assembly 17; push the upper pressure arm handle 173 of the upper pressure arm assembly 17, and rotate the upper pressure arm 171 clockwise to open it; pull the lifting handle 27 of the welding control module 2 to make the two head connecting assemblies 23 of the welding control module 2 disengage from the welding control module installation rectangular slot of the walking frame 11 of the walking base block 1, and the welding control module 2 can be removed from the walking base block 1 and divided into two bodies.

[0084] Then, the two walking bottom blocks 1 are connected and installed with the flexible circular track 1001; the installation process of a single walking bottom block 1 is as follows: ① downwardly adjust the two lower elastic walking wheel assemblies 15 so that the vertical spacing between the outer circle of the sheave and the outer circle of the fixed reference walking wheel assembly 12 sheave is greater than the flexible circular track 1001 width 3mm; ② slightly loosen the horizontal angle and front and rear position locking mechanism of an upper walking wheel assembly 14 and two lower elastic walking wheel assemblies 15 installed at the three leg ends of the walking chassis 11 of the walking bottom block 1, so that the three adjustable walking wheel assemblies are in a state where the sheave can be manually adjusted in horizontal angle and front and rear position, but cannot be rotated or moved freely at will; ③ the flexible circular track 1001 is clamped on a vertical φ1800 pile pipe; ④ pick up the walking bottom block 1, and tighten the reference walking wheel assembly 12 sheave in the middle of its upper part and the upper left part The inner groove of the sheave of the walking wheel assembly 14 is hung on the upper edge of the track plate of the flexible circular track 1001. Taking the sheave axis direction and radial position of the reference walking wheel assembly 12 that is radially mounted on the flexible circular track 1001 along the pile pipe as a reference, adjust the horizontal angle and front-to-back position of the sheave of the upper walking wheel assembly 14 so that the inner grooves of the sheaves of the reference walking wheel assembly 12 and the upper walking wheel assembly 14 are both tangentially clamped on the upper edge of the track plate of the flexible circular track 1001; ⑤ Taking the sheave axis direction and radial position of the reference walking wheel assembly 12 that has been clamped and positioned on the upper edge of the flexible circular track 1001 as a reference, adjust the horizontal angle and front-to-back position of the sheaves of the two lower elastic walking wheel assemblies 15, and then adjust and move the two lower elastic walking wheel assemblies 15 sheaves upward so that the inner grooves of their two sheaves are both tangentially clamped on the lower edge of the track plate of the flexible circular track 1001 and elastically pressed.

[0085] After completing the connection and installation of the two walking base blocks 1 and the flexible circular track 1001, adjust the installation accuracy of the two walking base blocks 1 and the flexible circular track 1001; the installation accuracy adjustment process of a single walking base block 1 is as follows: ① Push one walking base block 1 to roll along the flexible circular track 1001. If it encounters a place where the walking is not smooth, fine-tune the horizontal angle and front and back positions of the three adjustable walking wheel assemblies to make the walking base block 1 move smoothly at that place until the walking base block 1 can move smoothly along the flexible circular track 1001 in a full circle; ② Push the walking base block 1 to the double arc plate transition joint of the flexible circular track 1001, and use a feeler gauge to measure the horizontal angle and front and back positions of the three adjustable walking wheel assemblies 12 and 3 adjustable walking wheel assemblies. Fine-tune the front and rear positions of the three adjustable walking wheel assemblies by adjusting the gaps between the inner and outer grooves of the sheaves of the walking wheel assembly and the upper and lower edges of the inner and outer arc plates at the joints with the track 1001, so that the gaps between the inner and outer grooves of the sheaves of the upper walking wheel assembly 14 and the two lower elastic walking wheel assemblies 15 and the inner and outer arc plates at the joints with the track 1001 are all within the range of 0.05 to 0.15 mm; ③ Tighten the horizontal angle and front and rear position locking mechanism of the upper walking wheel assembly 14 and the two lower elastic walking wheel assemblies 15 to lock the horizontal angle and front and rear position of the sheaves of the three adjustable walking wheel assemblies; that is, complete the installation accuracy adjustment of the two walking bottom blocks 1 and the flexible circular ring track 1001.

[0086] Finally, the two walking base blocks 1 are moved along the track to two symmetrical positions. The adjustable clamping arms 192 of the walking base block positioning assembly 19 on the side of the walking base block 1 are moved to elastically position them on the inclined positioning surface. The ends of the adjustable clamping arms 192 are clamped into the positioning holes of the flexible circular track 1001, securing the two walking base blocks 1 in circumferentially symmetrical positions on the flexible circular track 1001. This completes the pre-installation of the walking base block 1 and the flexible circular track 1001.

[0087] During welding construction, the flexible circular track 1001 pre-installed with two walking bottom blocks 1 is fixed on the pile pipe on the upper side of the weld 200mm away from the pile pipe weld and parallel to the weld. The two welding control modules 2 are respectively installed and fixed on the two walking bottom blocks 1 to form two split-type pile pipe automatic welding machine heads 1000 of the present invention. The adjustable clamping arm 192 of the walking bottom block positioning assembly 19 on the side of the walking bottom block 1 is lifted up so that it is elastically positioned on the positive positioning surface of the positioning base 191 of the walking bottom block positioning assembly 19. The end of the adjustable clamping arm 192 is out of the positioning hole of the flexible circular track 1001 and placed flat on the side of the walking bottom block 1. The welding operation box 26 is used to set and adjust the welding parameters (welding speed, current, voltage, etc.) and control the movement of the machine head and the start and stop of welding. The welding operation box 26 is used to activate the head drive assembly 22 of the welding control module 2, causing the cylindrical friction drive wheel of the head drive assembly 22 pressed against the upper edge of the flexible circular track 1001 to rotate, driving the split-type pile pipe automatic welding head 1000 to move along the flexible circular track 1001. After moving to the welding starting position, the welding gun position adjustment module 24 is used to adjust the position and posture of the welding gun 25. After the welding gun 25 is aligned with the weld joint, the welding operation can begin. During the welding process, the welding gun position adjustment module 24 is used to adjust the position of the welding gun 25 to track the welding of the weld joint.

[0088] The process of inserting and fixing the welding control module 2 to the walking base block 1 is as follows: loosen the two lower fixing stud handles 164 of the lower fixing assembly 16 of the track walking base block 1, rotate the two lower fixing arms 162, so that the two sets of lower fixing stud handles 164 and the lower fixing arms 162 are lower than the outer surface of the walking base block 1; loosen the pressure arm pressing assembly 18, open the upper pressure arm assembly 17; hold the lifting handle 27, lift the welding control module 2 until its two head connecting assemblies 23 are located above the welding control module installation rectangular slot of the walking base frame 11; place the back of the welding control base plate 21 of the welding control module 2 against the outer surface of the walking base block 1; lower the welding control module 2, clamp the two head connecting assemblies 23 of the welding control module 2 in the welding control module installation rectangular slot of the walking base frame 11, and install it on the welding control The friction drive wheel of the head drive block 22 on the upper part of the module 2 is pressed on the upper edge of the flexible circular track 1001; close the pressure arm assembly 17, and use the pressure arm pressing assembly 18 to press the upper pressure arm assembly 17, then the two head connection assemblies 23 are clamped to the bottom of the rectangular slot for installing the welding control module of the walking frame 11, and the friction drive wheel of the head drive block 22 is elastically pressed on the upper edge of the flexible circular track 1001, completing the automatic and rapid positioning of the welding control module 2 on the walking frame 11; rotate the two lower fixing arms 162 of the lower fixing assembly 16 so that it is clamped in the two U-shaped through grooves for connecting and fixing the walking base blocks at the lower end of the welding control base plate 21, tighten the two lower fixing stud handles 164 of the lower fixing assembly 16 to press the welding control base plate 21; that is, complete the direct insertion installation and fixation of the welding control module 2 to the walking base block 1.

[0089] For the welding control module 2 and the walking base block 1 of a certain diameter pile pipe track, the horizontal angle and fore-aft position of the friction drive wheel of the head drive assembly 22 should be adjusted during the initial installation so that it can elastically press against the inner and outer arc edges of the flexible circular track 1001 along the radial direction of the pile pipe and at an appropriate fore-aft position. If the pile pipe diameter to be welded later is inconvenient, the head drive assembly 22 does not need to be adjusted again.

[0090] For the pile pipe welding of the same pipe diameter, after each weld is welded, the two split pile pipe automatic welding heads should be moved to the symmetrical position of the flexible circular track 1001, and the adjustable clamping arm 192 of the walking base block positioning assembly 19 on the side of the walking base block 1 of the two split pile pipe automatic welding heads should be pulled, and the two walking base blocks 1 are re-fixed in the circumferential symmetrical position of the flexible circular track 1001, and then the welding control module 2 and the walking base block 1 are separated. The separation method is the same as the split pile pipe automatic welding head 1000 of the present embodiment connected as one. The separated welding control module 2 is placed separately; the flexible circular track 1001 pre-installed with the two walking base blocks 1 is removed, and can be directly moved to another weld that has been aligned, and the welding control module 2 is re-inserted to weld the new weld, or the two walking base blocks 1 can be placed flat in an appropriate position with a bracket.

[0091] Applications have shown that the use of the split pile pipe automatic welding machine head in this example has reduced the on-site machine head installation weight of the welder by 42%, and the average time for auxiliary work such as machine head installation can be reduced by 20%, the simplicity of machine head installation and its installation accuracy are significantly improved, the walking stability and reliability of the machine head during welding are significantly improved, the weld seam formation quality is significantly improved, and the incidence of welding defects such as lack of fusion, pits, and undercuts is reduced, thereby improving the quality and efficiency of pile pipe automatic welding construction and reducing the labor intensity of welders.

[0092] The above embodiments are preferred implementation modes of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the technical field may, without departing from the scope of the technical features of the present invention, make partial changes or modifications to the technical contents disclosed in the present invention and make equivalent embodiments without departing from the technical features of the present invention. Such modifications shall still fall within the scope of the technical features of the present invention.

Claims

1. A split pile pipe automatic welding head, characterized in that: The welding head comprises a walking base block (1) and a welding control module (2). The walking base block and the welding control module are two relatively independent on-site connection and installation modules. When used on-site, the walking base block is connected to the flexible track as a whole, and the welding control module is installed on the walking base block. in: The walking base block (1) comprises a walking base frame (11), a reference walking wheel assembly (12), an upper walking wheel assembly (14) and a lower elastic walking wheel assembly (15); the walking base frame (11) is a three-legged X-shaped plate frame structure with one leg missing at the upper corner on one side in the length direction; the reference walking wheel assembly (12), the upper walking wheel assembly (14) and the two lower elastic walking wheel assemblies (15) all have freely rotatable double-grooved walking wheels at the front ends; the reference walking wheel assembly (12) is arranged at the middle of the top of the walking base block (1); the upper walking wheel assembly (14) is arranged on one side of the longitudinal length of the top of the walking base block (1); and the two lower elastic walking wheel assemblies (15) are arranged on both sides of the longitudinal length of the bottom of the walking base block (1); The welding control module (2) comprises a welding control base plate (21), a machine head drive block (22), a machine head connection assembly (23), a welding gun position adjustment module (24), a welding gun (25) and a welding operation box (26); the walking base frame of the walking base block (1) is fixedly connected to the back of the welding control base plate (21); the machine head drive block (22) is installed on the other side of the length direction of the top of the front of the walking base block (1); the machine head connection assembly (23) is installed on the top of the back of the welding control base plate (21); the welding gun position adjustment module (24) is installed on one side of the length direction of the welding control base plate (21); the welding gun (25) is installed at the lower end of the welding gun position adjustment module (24); and the welding operation box (26) is installed on the front of the welding control base plate (21); Upper reference walking wheel mounting grooves (106) are sequentially provided in the middle of the top of the walking base block (1) from bottom to top, and the upper reference walking wheel mounting grooves (106) are semicircular. The reference walking wheel assembly (12) is fixed in the upper reference walking wheel mounting grooves (106) of the walking base block (1) through a reference wheel fixing clamp (13). The double-grooved walking wheel of the reference walking wheel assembly (12) is fixed in the middle of the upper back side of the walking base frame (11), and the other end of the reference walking wheel assembly (12) does not protrude from the front surface of the walking base frame (11); A first support leg (101) is provided on one side of the longitudinal length of the top of the walking base block (1), and the upper walking wheel assembly (14) is mounted on the bottom of the first support leg (101); Second legs (102) are provided on both sides of the longitudinal length of the bottom of the walking base block (1), and the two lower elastic walking wheel assemblies (15) are respectively mounted on the tops of the two second legs (102); The double-grooved walking wheels of the upper walking wheel assembly (14) and the two lower elastic walking wheel assemblies (15) are both located on the back of the walking chassis (11); the double-grooved walking wheels of the upper walking wheel assembly (14) have horizontal angle and front-back position adjustment functions; the double-grooved walking wheels of the two lower elastic walking wheel assemblies (15) on the two legs on both sides of the lower part of the walking chassis (11) have horizontal angle, front-back position and up-down position adjustment functions, and can be elastically moved up and down.

2. A split type pile pipe automatic welding head according to claim 1, characterized in that: The welding head further comprises an upper pressure arm assembly (17) and an upper pressure arm fixing assembly (18); A rectangular slot (107) for mounting a welding control module (2) is provided in the middle of the upper portion of the walking chassis (11), the rectangular slot (107) being provided above the upper reference walking wheel mounting groove (106), and upper lugs (108) for mounting an upper pressure arm assembly (17) and a base (109) for mounting an upper pressure arm fixing assembly (18) are provided on both sides of the upper portion of the rectangular slot (107); The upper pressure arm assembly (17) includes an upper pressure arm (171), an upper pressure arm handle (173) and two groups of elastic top column assemblies (172), the upper pressure arm (171) is a rectangular slot structure, one end of the upper pressure arm (171) is rotatably connected to the upper support ear (108), the two groups of elastic top column assemblies (172) are relatively arranged in the middle of the upper pressure arm (171), each of the elastic top column assemblies (172) includes a top column (1721) and an elastic unit (1722), the lower end of the top column (1721) is arranged in the rectangular slot (107), the upper end of the top column (1721) passes through the upper pressure arm (171), the elastic unit (1722) is arranged between the upper pressure arm (171) and the lower end of the top column (1721), and the upper pressure arm handle (173) is arranged on the top of the upper pressure arm (171); The upper pressure arm pressing assembly (18) includes a U-shaped pressure frame (181) and a lower pressure stud handle (182), wherein the U-shaped pressure frame (181) is mounted on the outside of the other end of the upper pressure arm (171), and both sides of the U-shaped pressure frame (181) are connected to the base at the top of the walking chassis (11), and the lower pressure stud handle (182) is threaded through the middle of the top of the U-shaped pressure frame (181), and the lower pressure stud handle (182) is tightly positioned on the other end of the upper pressure arm (171).

3. The split type pile pipe automatic welding head according to claim 1, characterized in that: The welding head further comprises a walking bottom block positioning assembly (19), the walking bottom block positioning assembly (19) comprising an adjustable clamping arm (192), a positioning elastic element (193) and a positioning rotating shaft stud (194); the positioning base (191) is fixedly arranged at the middle of the other side of the longitudinal length of the walking bottom block (1); the adjustable clamping arm (192) is rotatably connected to the positioning base (191) via the positioning rotating shaft stud (194); the positioning elastic element (193) is arranged between the positioning base (191) and the adjustable clamping arm (192); and the positioning elastic element (193) is sleeved on the positioning rotating shaft stud (194).

4. A split type pile pipe automatic welding head according to claim 3, characterized in that: A lower reference walking wheel mounting groove (105) is provided in the middle of the bottom of the walking bottom block (1); The welding head further includes a lower fixing assembly (16) including a lower fixing base (161), two lower fixing arms (162) and two lower fixing stud handles (164), wherein the lower fixing base (161) is fixedly arranged in the lower reference walking wheel mounting groove (105) of the walking chassis (11), and two opposite lower supporting ears (165) are arranged at the bottom of the lower fixing base (161), the lower fixing arms (162) and the lower supporting ears (165) are arranged correspondingly, and the lower fixing arms (162) are rotatably connected to the corresponding lower supporting ears (165) through lower pins (163), and the lower pins (163) are arranged in the horizontal direction, and the lower fixing stud handles (164) and the lower fixing arms (162) are arranged correspondingly, and the lower fixing stud handles (164) are threadedly connected to the corresponding lower pins (163).

5. A split type pile pipe automatic welding head according to claim 4, characterized in that: Two first screw holes (211) for mounting a machine head drive assembly (22) are provided on an upper portion of one side in the longitudinal direction of the welding control base plate (21), two screw holes (212) for mounting a machine head connection assembly (23) are provided on an upper middle portion of the welding control base plate (21), two U-shaped through grooves (213) for connecting and fixing with the walking base block (1) are provided at a lower end of the welding control base plate (21), and a mounting hole (214) for a welding gun position adjustment module (24) is provided on a lower portion of the other side in the longitudinal direction of the welding control base plate (21); The two lower fixing arms (162) of the lower fixing assembly (16) can be operably inserted into the corresponding U-shaped through slots (213) so that the two lower fixing stud handles (164) of the lower fixing assembly (16) can press the welding control base plate (21).

6. A split type pile pipe automatic welding head according to claim 4, characterized in that: The head drive assembly (22) comprises a friction drive wheel driven to rotate by a reduction motor, the horizontal angle and front and rear positions of the friction drive wheel are fixed and adjustable, and the upper and lower positions of the friction drive wheel are elastically positioned.

7. A split type pile pipe automatic welding head according to any one of claims 1 to 4, characterized in that: Each of the machine head connection components (23) comprises a positioning connection column (231), a limiting retaining ring (232), a pressing elastic element (233) and a pressing support seat (234), wherein: One end of the positioning connection column (231) is provided with a convex cylindrical section, and the two convex cylindrical sections of the positioning connection column (231) are inserted into the rectangular slots of the walking frame (11) of the walking bottom block (1), and the two groups of elastic top column components (172) of the upper pressure arm component (17) of the walking bottom block (1) press downward on the convex cylindrical sections of the two positioning connection columns (231), so that the head connection component (23) is positioned on the bottom of the rectangular slot of the walking frame (11); The limiting retaining ring (232), the pressing elastic element (233) and the pressing support seat (234) are sequentially arranged on the other end of the positioning connecting column (231) along the axial direction of the positioning connecting column (231); the end of the limiting retaining ring (232) facing away from the pressing elastic element (233) is a slope, and the end of the limiting retaining ring (232) facing the pressing elastic element (233) is a plane; the pressing elastic element (233) is arranged between the limiting retaining ring (232) and the pressing support seat (234); and the pressing support seat (234) is threadedly connected to the positioning connecting column (231); The limiting rings (232) of the two machine head connecting assemblies (23) elastically press against the back of the bottom of the rectangular slot of the traveling chassis (11), so that the back of the welding control base plate (21) of the welding control module (2) automatically sticks to the front of the traveling chassis (11).

8. A split type pile pipe automatic welding head according to any one of claims 1 to 4, characterized in that: The welding gun position adjustment module (24) comprises a welding gun upper and lower adjustment block (241), a front and rear adjustment block connecting arm (242) installed at the lower end of the welding gun upper and lower adjustment block (241), a welding gun front and rear and angle adjustment block (243) connected to the lower end of the front and rear adjustment block connecting arm (242), and a welding gun clamping block (244) installed at the front end of the welding gun front and rear and angle adjustment block (243).

9. A split type pile pipe automatic welding head according to any one of claims 1 to 4, characterized in that: The welding control module (2) further includes a lifting handle (27), and the lifting handle (27) is fixed to the upper middle portion of the front side of the welding control base plate (21).

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