Flexible suspension bridge suspender welding device

Abstract

The invention belongs to the technical field of suspender welding, and particularly relates to a flexible suspension bridge suspender welding device. Comprising a rack, a control part, two clamping and fixing parts, two welding execution parts and a plurality of bearing parts. According to the invention, through an inner and outer double-layer triangular cross section overlapping welding process, two welding areas with triangular cross sections form an inner and outer nested and mutually overlapped reinforcing structure, so that the effective welding seam depth and the bearing sectional area are greatly increased, and the connection areas are changed from linear connection to surface connection; the triangular section has excellent structural stability, stress can be dispersed and transmitted more effectively, and rapid concentration of the stress at the root of a welding seam is avoided; and the welding surface of the first area, the tie bar and the end sealing plate are further fused into a whole through welding of the second area, an interlocking structure is formed, and the anti-fatigue performance and the static load strength of the joint position are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of suspender welding, and particularly relates to a flexible suspension bridge suspender welding device. BACKGROUND

[0002] As an important modern bridge type, the suspender of a flexible suspension bridge is a key stressed component, which mainly connects the main cable and the bridge deck system and transmits the load of the bridge deck to the main cable. The reliability of the suspender directly relates to the structural safety and service life of the whole bridge.

[0003] The current suspender is usually connected by welding of a tie rod and a head plate at the end of the tie rod. The current suspender welding is usually performed by manual welding or semi-automatic welding. The welding seam formed by the above welding methods is usually a single-layer annular welding seam. The load bearing area formed by the single-layer annular welding seam is small, resulting in low connection strength. In addition, the welding seam is formed by welding flux with insufficient or uneven compactness, which easily causes defects such as pores, slag inclusion, incomplete fusion and unevenness in the formed welding seam. The welding seam is a stress concentration point, and the effective load bearing area is further reduced after the above defects occur, greatly affecting the mechanical properties of the suspender.

[0004] In summary, the suspender welding in the prior art flexible suspension bridge has obvious deficiencies in welding seam forming quality, defect control and final connection reliability. Therefore, the present application provides a flexible suspension bridge suspender welding device. SUMMARY

[0005] To solve the above problems, the present application provides a flexible suspension bridge suspender welding device for solving the problems mentioned in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme: the present application provides a flexible suspension bridge suspender welding device, which comprises a rack, a control part, two clamping and fixing parts, two welding execution parts and a plurality of supporting parts. The control part is arranged on one side of the rack and has a display screen and operation buttons, which are used for inputting welding parameters, controlling the welding process and realizing the operation and control of the whole welding device. The two clamping and fixing parts are arranged on the left and right sides of the rack and are used for clamping and fixing the head plate. The two welding execution parts are arranged on the left and right sides of the rack, respectively, and are used for welding and fixing the head plate and the tie rod. The plurality of supporting parts are uniformly arranged on the upper end surface of the rack and are used for supporting the tie rod and driving the tie rod to rotate at a uniform speed to switch the welding position.

[0007] The head plate and the tie rod form a first region and a second region annular welding surface of an inner and outer double-layer triangular cross section between the head plate and the tie rod, and the second region welding surface melts the first region welding surface, the tie rod and the head plate into one whole.

[0008] According to an advantageous embodiment, the welding execution part comprises a welding assembly and a forming limiting assembly; the welding assembly and the forming limiting assembly are arranged on the side wall of the rack, the welding assembly is used for welding the welding seam between the head plate and the tie rod by submerged arc welding, and the forming limiting assembly is used for limiting and compacting the welding flux during the welding process.

[0009] According to an advantageous embodiment, the welding assembly comprises a universal moving table arranged on the rack and capable of sliding in any direction, and a welding head, a flux supply gun and a flux recovery gun arranged on the universal moving table respectively; the welding head is used for feeding the welding wire into the electric arc area at a stable speed; the flux supply gun is used for spreading the flux to the electric arc area; and the flux recovery gun is used for collecting the un-melted flux after welding.

[0010] According to an advantageous embodiment, the forming limiting assembly comprises a transverse electric telescopic part arranged on the side wall of the rack and a longitudinal electric telescopic part connected to the telescopic end of the transverse electric telescopic part, and a limiting plate with a semi-arc structure is detachably installed on the telescopic end of the longitudinal electric telescopic part through a connecting block; two groups of rectangular limiting grooves are arranged on the limiting plate; a U-shaped limiting frame is arranged in each of the rectangular limiting grooves on the inside of the limiting plate through an electric sliding block, the U-shaped limiting frame is arranged horizontally, and the U-shaped limiting frame moves up and down along the rectangular limiting groove; a sliding block capable of moving up and down along the rectangular limiting groove is arranged in each of the rectangular limiting grooves on the outside of the limiting plate, a micro motor is arranged in the sliding block, a coaming is connected to the output shaft of the micro motor, and the coaming is used for limiting the flux.

[0011] According to an advantageous embodiment, the two strip sections of the U-shaped limiting frame are each provided with a through guide groove, and a pressing part is arranged in the two guide grooves, and an electric push rod is arranged in the U-shaped limiting frame and used for driving the pressing part to move horizontally along the guide groove.

[0012] According to an advantageous embodiment, the pressing part comprises a pressing handle, two semi-arc pressing heads, the pressing handle is arranged in the guide groove in a sliding manner, one end of the pressing handle is connected to the telescopic end of the electric push rod, the other end of the pressing handle is fixedly installed with one semi-arc pressing head, and one semi-arc pressing head is arranged on the lower end face of the pressing handle through an electric sliding block.

[0013] According to an advantageous embodiment, the clamping and fixing part comprises a clamping plate, a limiting disc and a speed reducer; the speed reducer is arranged at the left and right ends of the rack through a motor seat, the output shaft of the speed reducer is connected to the limiting disc through a flange, the clamping plate is arranged on the limiting disc and can move close to or away from the limiting disc synchronously, the clamping plate is arranged symmetrically about the center of the limiting disc, and a driving part is arranged in the limiting disc and used for driving the two clamping plates to move close to or away from the limiting disc synchronously.

[0014] According to an advantageous embodiment, the supporting part comprises a supporting table arranged at the upper end of the frame, and the upper end of the supporting table is provided with two synchronously rotating electric driving rollers through a support, and the electric driving rollers are used to drive the tie rod placed on the upper end to rotate at a low speed.

[0015] Compared with the prior art, the flexible suspension bridge suspender welding device provided by the embodiment of the present application has the following beneficial effects: through the "inner and outer double-layer triangular cross-section overlapping welding" process (welding the root of the first area welding groove, and covering the outer side of the first area in the second area), the two welding areas with triangular cross-section form a nested and overlapped reinforcing structure, which greatly increases the effective weld depth and the bearing cross-sectional area, and changes the connection area from "line" connection to "surface" connection; the triangular cross-section has excellent structural stability, can more effectively disperse and transfer stress, and avoids the sharp concentration of stress at the root of the weld; and the second area welding further melts the first area welding surface, the suspender and the head plate into one whole, forms an interlocking structure, and significantly improves the fatigue resistance and static load strength of the suspender and the head plate welding point; the whole weld is gradually formed under the protection of the flux under the compaction treatment in the forming process, the weld surface is uniform and bubble-free, and the welding forming strength of the suspender is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure between the control part and part of the frame of the present application.

[0018] Figure 3 It is a schematic diagram of part of the structure between the supporting part and the suspender of the present application.

[0019] Figure 4 It is a schematic diagram of part of the structure between the supporting part and the suspender of the present application. Figure 3 It is a local enlarged view of A in the present application.

[0020] Figure 5 It is a sectional view between the pressing piece and the U-shaped limiting frame of the present application.

[0021] Figure 6 It is a front view of the position of the welding groove prepared for welding between the head plate and the suspender of the present application.

[0022] Figure 7 It is a side view of the position of the welding groove prepared for welding between the head plate and the suspender of the present application.

[0023] Figure 8 It is a front view of the position of the welding groove prepared for welding between the head plate and the suspender of the present application.

[0024] Figure 9The side view of the groove position between the head plate and the tie rod after welding.

[0025] Figure 10 The front view of the groove position between the head plate and the tie rod before secondary reinforcement welding.

[0026] Figure 11 The side view of the groove position between the head plate and the tie rod before secondary reinforcement welding.

[0027] Figure 12 The side view of the groove position between the head plate and the tie rod during preliminary welding of secondary reinforcement.

[0028] Figure 13 The front view of the groove position between the head plate and the tie rod during secondary reinforcement welding.

[0029] Figure 14 The side view of the groove position between the head plate and the tie rod during secondary reinforcement welding.

[0030] Figure 15 The front view of the groove position between the head plate and the tie rod after complete welding.

[0031] In the figure, the reference signs are as follows: 1, frame; 2, control part; 21, display screen; 22, operation button; 3, clamping fixing part; 31, clamping plate; 32, limiting disc; 33, speed reduction motor; 4, welding execution part; 41, welding assembly; 411, universal moving table; 412, welding head; 413, welding flux supply gun; 414, welding flux recovery gun; 42, shaping limiting assembly; 421, transverse electric telescopic part; 422, longitudinal electric telescopic part; 423, limiting plate; 424, U-shaped limiting frame; 425, sliding block; 426, micro motor; 427, coaming; 431, guide groove; 432, pressing part; 433, electric push rod; 441, pressing handle; 442, semi-arc pressing head; 5, supporting part; 51, supporting table; 52, electric driving roller; 6, head plate; 7, tie rod. DETAILED DESCRIPTION

[0032] The following will be described in detail below Figure 1 - the accompanying drawings Figure 15 The present application will be further described in detail.

[0033] Please refer to the accompanying drawings Figure 1 and Figure 2The utility model provides a kind of flexible suspension bridge suspender welding device, including frame 1, control part 2, clamping fixed part 3, two welding execution parts 4 and several support parts 5;The control part 2 is arranged in one side of frame 1, control part 2 is equipped with display screen 21 and operating button 22, for inputting welding parameter, control welding process, realize the operation and control of whole welding device;The clamping fixed part 3 is arranged in the left and right sides of frame 1, for clamping and fixing to head plate 6;Two the welding execution parts 4 are arranged in the left and right sides of frame 1 respectively, for welding and fixing between head plate 6 and tie rod 7;Several the support parts 5 are evenly arranged on the upper end surface of frame 1, for supporting tie rod 7 and driving it uniform speed rotation switching welding position.

[0034] Specific welding process is: first operating control part 2, by operating button 22 input relevant parameter, then evenly adjust the position of several support parts 5 on frame 1, then by crane, belt conveying equipment, forklift and so on one of the equipment suspender 7 is lifted to the upper end of support part 5, and is supported by support part 5;Then the head plate 6 to be welded is clamped and fixed by clamping fixed part 3 and sent to the end of tie rod 7 to be attached and aligned;It should be noted that the port position of the tie rod 7 to be welded is provided with a groove, to increase the connection strength between the tie rod 7 and the head plate 6;After alignment, the welding execution part 4 is used to weld the tie rod 7 and the head plate 6 between the two inner and outer annular regions on the side of the welding execution part 4;After welding, the clamping fixed part 3 releases the clamping of the head plate 6, and finally the suspender after welding is removed.

[0035] Wherein, the control part 2 in the embodiment utilizes visual sensor, antenna sensor and other advanced sensing elements, and with the aid of computer software system, database, expert system, has the functions of identification, judgment, real-time detection, operation, automatic programming, welding parameter calling, etc., the operator only needs to input material brand, plate thickness and other information, and the equipment can automatically plan the welding process.

[0036] Referring to Figure 3 The support part 5 includes an adjustable support table 51 arranged on the upper end of the frame 1, and two synchronous rotating electric drive rollers 52 are arranged on the upper end of the support table 51 through a support, and the electric drive rollers 52 are used to drive the tie rod 7 placed on the upper end to rotate at a low speed; When working, since the tie rod 7 is placed between the two electric drive rollers 52, when the two electric drive rollers 52 rotate synchronously, the tie rod 7 can be driven to rotate at a low speed through the friction between the tie rod 7 and the electric drive rollers 52; At the same time, the specific position of the support table 51 on the upper end surface of the frame 1 in the embodiment can be automatically adjusted according to the input relevant parameters, and the automatic adjustment mode of the support table 51 in the embodiment is adjusted by an electric mode.

[0037] It should be noted that the clamping and fixing part 3 is used for clamping and fixing the head plate 6; and the clamping and fixing principle of the current clamping and fixing part 3 mainly includes chuck type, clamp type and clamp type; and the clamping and fixing part 3 in the embodiment adopts the clamp type, which can quickly position and fix the head plate 6 through the opening and closing action of the clamp, and is suitable for head plates 6 of various thicknesses. Specifically, refer to Figure 1 , the clamping and fixing part 3 includes a clamping plate 31, a limiting disc 32 and a speed reducer 33; the speed reducer 33 is arranged at the left and right ends of the rack 1 through the motor base, the output shaft of the speed reducer 33 is connected to the limiting disc 32 through a flange, the clamping plate 31 is arranged on the limiting disc 32 and can be synchronously close or away, and the clamping plate 31 is symmetrically arranged about the center of the limiting disc 32; the inside of the limiting disc 32 is further provided with a driving member for driving the two clamping plates 31 to be synchronously close or away, and it should be noted that the specific driving member can adopt a pneumatic cylinder, a hydraulic cylinder, etc. The driving member in the embodiment adopts a double-output head cylinder, wherein the two output heads of the double-output head cylinder are connected with the clamping plates 31 respectively; during operation, the two output heads of the double-output head cylinder are retracted to drive the two clamping plates 31 to be close to each other to clamp the head plate 6; after clamping and fixing, the end face of the head plate 6 needs to be adjusted to be in close contact with the end face of the tie rod 7, and the specific adjustment action is realized by adjusting the horizontal movement of the clamping and fixing part 3 through the telescopic system (common telescopic systems include hydraulic telescopic system, pneumatic telescopic system and electric telescopic system) in the rack 1.

[0038] Refer to Figure 1 , the welding execution part 4 includes a welding assembly 41 and a forming limiting assembly 42; the welding assembly 41 and the forming limiting assembly 42 are adjustably arranged on the side wall of the rack 1, the welding assembly 41 is used for welding the welding seam between the head plate 6 and the tie rod 7 by submerged arc welding, and the forming limiting assembly 42 is used for limiting and compacting the welding agent during the welding process.

[0039] When the current welding device is used to weld the boom, the connection between the tie rod 7 and the head plate 6 is welded by using the welding method of the inner and outer two layers of superimposed layout; the bearing area of the welding seam is greatly improved, and the welding section of the two layers of welding area is triangular, which aims to improve the structural strength of the boom forming; specifically, the purpose of the welding assembly 41 is to feed the welding wire to the welding area and spread the welding agent, etc.; and the forming limiting assembly 42 limits the area filled with the welding agent during the welding process, and compacts the welding agent filled in the area by the welding assembly 41; finally, the welding assembly 41 ignites the welding agent to melt the welding wire to realize welding, and the excess welding agent that is not melted is adsorbed and recycled.

[0040] Refer to Figure 2 and Figure 4The welding assembly 41 comprises a universal moving table 411 arranged on the frame 1 and capable of sliding in any direction, and a welding head 412, a flux supply gun 413 and a flux recovery gun 414 arranged on the universal moving table 411 respectively; the welding head 412 feeds the welding wire into the arc area (welding area) at a stable speed, ensures the balance between the melting amount of the welding wire and the feeding amount of the welding wire, maintains the stability of the arc length, and can apply a high-frequency high-voltage electric pulse between the welding wire and the welding piece to ignite the arc; the flux supply gun 413 uniformly spreads the flux to the arc area, and the excess un-melted flux after welding is collected by the flux recovery gun 414, and the collected flux can be reused.

[0041] Referring to Figure 4 and Figure 6 , the forming limiting assembly 42 comprises a transverse electric telescopic piece 421 arranged on the side wall of the frame 1 and a longitudinal electric telescopic piece 422 connected to the telescopic end of the transverse electric telescopic piece 421, and the telescopic end of the longitudinal electric telescopic piece 422 is detachably installed with a limiting plate 423 in a semi-arc structure through a connecting block; the limiting plate 423 is provided with two groups of rectangular limiting grooves inside and outside; a U-shaped limiting frame 424 is arranged in each of the rectangular limiting grooves inside the limiting plate 423 through an electric sliding block, the U-shaped limiting frame 424 is horizontally arranged, and the U-shaped limiting frame 424 moves up and down along the rectangular limiting groove; a sliding block 425 capable of moving up and down along the rectangular limiting groove is arranged in each of the rectangular limiting grooves outside the limiting plate 423, a micro motor 426 is arranged in the sliding block 425, a coaming 427 is connected to the output shaft of the micro motor 426, and the coaming 427 is used for limiting the flux.

[0042] When the welding assembly 41 adopts two areas to weld the welding mode between the tie rod 7 and the head plate 6, the process is as follows: referring to Figures 6-9 , first area welding: first, the two micro motors 426 drive the coamings 427 to flip to a state that the inner arc surface of the coaming 427 corresponds to the outer arc surface of the tie rod 7, and after completion, the two sliding blocks 425 are slid to the lowermost end of the rectangular limiting groove through electric driving, so that the inner arc surface of the coaming 427 is attached to the outer arc surface of the tie rod 7 (as shown in Figure 6 and Figure 7 ).

[0043] Then, the welding assembly 41 welds the attached area between the bevel groove position of the tie rod 7 and the head plate 6, and when welding, the area is welded in the radial direction away from the stack one layer after another in the circumferential direction, so as to fully ensure the welding effect.

[0044] Referring to Figures 10-15, the second area welding: first, two micro motor 426 drive the coaming 427 flip into the coaming 427 side and the outer arc surface of the tie rod 7 corresponding state, after two sliders 425 are slid to the lower end of the rectangular limiting slot, the coaming 427 side and the outer arc surface of the tie rod 7 (as shown in Figure 10 and Figure 11 ).

[0045] Then, by welding assembly 41 on the outer wall of the tie rod 7 and head plate 6 and located in the first area of the outside position for preliminary welding, the limiting area welding after the state as shown in Figure 12 .

[0046] Next, the slider 425 near the welding head 412 position along the rectangular limiting slot to the upper end, after the completion of the micro motor 426 in this position drive the coaming 427 flip into the coaming 427 arc region and the outer arc surface of the tie rod 7 corresponding state; then through the support 5 drive the tie rod 7 angle rotation, and the clamping fixed part 3 synchronous drive clamping head plate 6 together with the rotation, as shown in Figures 12-14 ; until the last welding is completed, as shown in Figure 15 .

[0047] It should be noted that after the welding head 412 with stable speed into the arc area of the welding wire, the flux supply gun 413 by multiple cooperation will be filled in the arc area of the welding flux, in the welding, the flux will melt under the action of arc heat to form slag layer and gas layer, the slag layer covers the surface of the molten pool, the gas layer around the arc, can effectively isolate the molten pool metal from air, prevent the oxygen, nitrogen and other gases in the air into the molten pool, avoid the metal at high temperature and these gases react, thereby reducing the generation of pores, oxides and other defects in the weld, improve the purity and mechanical properties of the weld metal, and the tight filling of the welding flux can greatly improve the above protection effect, fully guarantee the size of the effective bearing area.

[0048] Specifically in order to improve the tightness of the welding flux, refer to Figure 4 and Figure 5 , the two strip section of the U-shaped limiting frame 424 are provided with a through guide groove 431, the two guide grooves 431 are internally provided with a pressing piece 432, and the inside of the U-shaped limiting frame 424 is provided with an electric push rod 433 for driving the pressing piece 432 to move horizontally along the guide groove 431; specifically when welding the two areas respectively, because the triangular cross section of the two welding areas is different in size, the electric push rod 433 is driven to move along the guide groove 431 to adjust the position of the pressing piece 432, so that the welding flux in each area can be pressed tightly.

[0049] Referring toFigure 5 The pressing member 432 includes a pressing handle 441 and two semi-arc pressing heads 442. The pressing handle 441 is slidingly arranged in the guide groove 431, and one end of the pressing handle 441 is connected with the telescopic end of the electric push rod 433, and the other end of the pressing handle 441 is fixedly installed with a semi-arc pressing head 442. A semi-arc pressing head 442 is also arranged at the lower end of the pressing handle 441 through an electric sliding block. The pressing member 432 is used to press the flux to improve the compactness of the flux filling. Because the welding is divided into two areas, the first area (see Figure 8 ) is the fitting area between the groove position of the tie rod 7 and the head plate 6, and the second area (see Figure 13 ) is the position outside the first area between the outer wall of the tie rod 7 and the head plate 6. Because the cross-sectional sizes of the two areas are different, when the flux in the above two areas is pressed after filling, the efficiency of pressing the different size areas by a single semi-arc pressing head 442 is limited. Therefore, when the flux in the second welding area is pressed after filling, the semi-arc pressing head 442 arranged through the electric sliding block slides along the lower end of the pressing handle 441 and is fitted with the fixedly installed semi-arc pressing head 442 before performing the pressing process, which increases the pressing area and greatly improves the pressing efficiency.

[0050] It should be noted that the materials of the surrounding plate 427 and the pressing member 432 can be one of red copper, graphite, and ceramic. In this embodiment, red copper is preferred because red copper has very high thermal conductivity, can quickly conduct heat away from the welding area, and prevent its own temperature from rising to the melting point, thereby avoiding fusion from a physical point of view. Moreover, the melting point of the surrounding plate 427 and the pressing member 432 made of red copper is higher than the welding pool temperature (usually about 1500°C) of the tie rod 7 (steel material) and the head plate 6 (steel material). At the same time, copper and steel are not mutually soluble in liquid state, and molten steel water cannot “wet” the surface of copper, and they naturally separate after cooling, and can be knocked off. Therefore, the surrounding plate 427 and the pressing member 432 made of red copper can effectively avoid the adhesion of the flux to the surrounding plate 427 and the pressing member 432 during welding.

[0051] When the present welding device is used to weld the suspender, the circumferential annular welding between the groove of the tie rod 7 and the head plate 6 can be performed, and the cross section of the welding surface is triangular. By increasing the connection area and welding the cross section to be triangular, the connection strength between the tie rod 7 and the head plate 6 is improved. In order to further improve the connection effect between the tie rod 7 and the head plate 6, a second welding surface with a triangular cross section is further formed at the position of the first welding seam along the outside of the welding seam. The second welding surface further reinforces and connects the first area welding surface, the tie rod 7, and the head plate 6, forming an interlocking structure, and further improving the connection strength of the suspender after welding.

[0052] Since the strength requirement of the hanger of the flexible suspension bridge is higher than that of the common rod, the flexible suspension bridge hanger welding device is designed, through the inner and outer double-layer triangular section superposition welding process (the first area is welded at the root of the groove, and the second area covers the outer side of the first area), the two welding areas with triangular sections form the nested and superimposed reinforcing structure, the effective weld depth and the bearing cross-sectional area are greatly increased, the connection area is changed from the line connection to the surface connection, stress can be more effectively dispersed and transmitted, and the sharp concentration of stress at the weld root is avoided, the second area welding further melts the first area welding surface, the tie rod 7 and the head plate 6 into one whole, an interlocking structure is formed, the fatigue resistance and the static load strength of the welding point of the tie rod 7 and the head plate 6 are remarkably improved, and the whole welding seam is gradually formed under the protection of the flux under the compaction treatment, the formed weld surface is uniform and bubble-free, and the welding forming strength of the hanger is further ensured.

[0053] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second", "one", "two" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0055] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The embodiments of the present application are preferred embodiments of the present application, and do not limit the protection scope of the present application, and thus, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A flexible suspension bridge hanger welding device, Its characteristics include: frame; Control unit; located on one side of the frame, equipped with a display screen and operation buttons, used to input welding parameters and control the welding process; Clamping and fixing parts; located on the left and right sides of the frame, used to clamp and fix the end plate; Two welding actuators are respectively located on the left and right sides of the frame and are used to weld and fix the end plate and tie rod together. At least two support parts are provided on the upper end face of the frame to support the tie rod and drive the tie rod to rotate at a constant speed to switch the welding position. The end plate and the tie rod form annular welding surfaces in the first and second regions with inner and outer double-layer triangular cross sections. The welding surface of the second region fuses the welding surface of the first region, the tie rod, and the end plate into a whole.

2. The flexible suspension bridge hanger welding device according to claim 1, characterized in that, The welding actuator includes a welding assembly and a forming limiting assembly; both the welding assembly and the forming limiting assembly are located on the side wall of the frame. The welding assembly is used to weld the weld seam between the end plate and the tie rod by submerged arc welding. The forming limiting assembly is used to limit and compact the flux during the welding process.

3. The flexible suspension bridge hanger welding device according to claim 2, characterized in that, The welding assembly includes a universal moving table mounted on a frame and capable of sliding in any direction, and a welding head, a flux supply gun, and a flux recovery gun respectively mounted on the universal moving table; the welding head feeds the welding wire into the arc zone at a stable speed; the flux supply gun spreads flux into the arc zone; and the flux recovery gun collects unmelted flux after welding.

4. The flexible suspension bridge hanger welding device according to claim 2, characterized in that, The forming limiting assembly includes a transverse electric telescopic component disposed on the side wall of the frame and a longitudinal electric telescopic component connected to the telescopic end of the transverse electric telescopic component. The telescopic end of the longitudinal electric telescopic component is detachably mounted with a semi-arc-shaped limiting plate via a connecting block. The limiting plate has two sets of rectangular limiting grooves, one inside and one outside. A U-shaped limiting frame is disposed in the rectangular limiting groove inside the limiting plate via electric sliders. The U-shaped limiting frame is horizontally positioned and moves up and down along the rectangular limiting groove. A slider that can move up and down along the rectangular limiting groove is disposed in the rectangular limiting groove outside the limiting plate. A micro motor is disposed inside the slider. The output shaft of the micro motor is connected to a surrounding plate, which is used to limit the flux.

5. The flexible suspension bridge hanger welding device according to claim 4, characterized in that, Both strip sections of the U-shaped limiting frame are provided with through guide grooves, and a pressing component is provided inside the two guide grooves. The U-shaped limiting frame is also provided with an electric push rod for driving the pressing component to move horizontally along the guide groove.

6. The flexible suspension bridge hanger welding device according to claim 5, characterized in that, The pressing component includes a pressing handle and two semi-circular pressing heads. The pressing handle is slidably disposed in the guide groove, and one end of the pressing handle is connected to the telescopic end of the electric push rod. A semi-circular pressing head is fixedly installed at the other end of the pressing handle. A semi-circular pressing head is also disposed on the lower end face of the pressing handle via an electric slider.

7. The flexible suspension bridge hanger welding device according to claim 1, characterized in that, The clamping and fixing part includes clamping plates, limiting plates, and reduction motors; the reduction motors are respectively mounted on the left and right ends of the frame via motor bases, and the output shafts of the reduction motors are connected to the limiting plates via flanges. The limiting plates are provided with clamping plates that can move closer or further away synchronously, and the clamping plates are symmetrically arranged about the center of the limiting plates; the limiting plates are also provided with a driving component inside for driving the two clamping plates to move closer or further away synchronously.

8. The flexible suspension bridge hanger welding device according to claim 1, characterized in that, The supporting part includes a support platform set at the upper end of the frame. Two synchronously rotating electric drive rollers are set at the upper end of the support platform via a bracket. The electric drive rollers are used to drive the tie rod placed at the upper end to rotate at a low speed.

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