A welding device for a building steel structure joint

Abstract

The present application relates to the technical field of welding, in particular to a kind of welding device for building steel structure joint.The technical problem of the present application is that staff hand shaking can easily cause weld deformation, defects and other security risks.The technical solution of the present application is that it includes handle, support cylinder, rotating cylinder, rotating smooth unit, etc., the support cylinder is arranged at one end of the handle, the rotating cylinder is rotatably arranged on the support cylinder, and the rotating smooth unit is arranged on the rotating cylinder and the support cylinder.The present application sets up telescopic pipe, the staff swings left and right by holding the handle, so that the support cylinder drives the rotating cylinder to rotate, thereby the rotating cylinder extrudes the telescopic pipe, the gas pressure in the telescopic pipe rises, thereby generating thrust, the rotating cylinder drives the goose neck pipe to move smoothly through the conductive parts, thereby the weld formed by welding is uniform in thickness, and the weld quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a welding device for building steel structure joints. BACKGROUND

[0002] Steel structure is a building load-bearing structure made of steel, which has the characteristics of high strength, light weight, good earthquake resistance and strong maintainability, so that steel structure is widely used in the fields of building, bridge and tower.

[0003] In the connection mode of steel structure, welding is a key process of steel structure. In the construction site, the staff generally adopts the mode of carbon dioxide gas shielded welding to manually weld the steel structure. However, the slight shaking of the hands of the staff will make the welding gun move at an unstable speed, so that the welding material is unevenly distributed during welding. This situation is more obvious when welding a wide weld. Uneven distribution of welding material will lead to the formation of welding bumps. In the process of cooling and forming the weld, the local heat dissipation of the weld is slow, so that internal stress appears in the weld. The appearance of internal stress will reduce the strength of the weld. In severe cases, the weld will deform and crack or bubbles will appear inside the weld. To this end, a welding device for building steel structure joints is provided, which can improve the welding effect and the stability of the welding process to avoid the deformation, defects and other safety hazards of the weld caused by the shaking of the hands of the staff. SUMMARY

[0004] In order to overcome the shortcomings that the shaking of the hands of the staff will easily cause the deformation, defects and other safety hazards of the weld, the technical problem of the present application is to provide a welding device for building steel structure joints which can improve the welding effect and the stability of the welding process.

[0005] The technical solution of the present application is: a welding device for building steel structure joints, comprising:

[0006] a handle;

[0007] a support cylinder, which is arranged at one end of the handle;

[0008] a rotating cylinder, which is rotatably arranged on the support cylinder;

[0009] a rotating smoothing unit, which is arranged on the rotating cylinder and the support cylinder, and is used to smoothly rotate the rotating cylinder left and right to prevent the rotating cylinder from moving too fast when welding a wide seam of the steel structure;

[0010] a moving smoothing unit, which is arranged on the rotating cylinder and is used to smoothly move the welding wire to prevent the welding material from being unevenly distributed on the steel structure;

[0011] A gooseneck pipe is arranged on the moving smoothing unit, and a conductive part for melting welding wire is arranged inside the gooseneck pipe.

[0012] A nozzle is arranged at one end of the gooseneck pipe.

[0013] A support auxiliary unit is arranged on the gooseneck pipe, and is used for assisting in positioning the position and angle of the steel structure and the welding wire.

[0014] Further, the rotating smoothing unit comprises:

[0015] A telescopic pipe is symmetrically arranged between the support cylinder and the rotating cylinder, and the inside of the telescopic pipe is filled with gas.

[0016] A threaded knob is arranged on the rotating cylinder by mirror image distribution through threads, and one end of the threaded knob is located inside the telescopic pipe.

[0017] Further, the rotating smoothing unit further comprises:

[0018] A pressing knob is arranged on the support cylinder by threads, the roughness coefficient of the bottom end of the pressing knob is larger, and the bottom end of the pressing knob contacts the rotating cylinder.

[0019] Further, the moving smoothing unit comprises:

[0020] A first sliding ring is arranged on the rotating cylinder by annular distribution, and the first sliding ring is fixedly connected with the gooseneck pipe.

[0021] A first spring is arranged between the first sliding ring and the rotating cylinder.

[0022] Further, the moving smoothing unit further comprises:

[0023] A second sliding ring is arranged on the sliding groove, and the second sliding ring is fixedly connected with the gooseneck pipe.

[0024] A second spring is arranged at one end of the second sliding ring.

[0025] A rotating ring is arranged at one end of the second spring, and the rotating ring is sleeved and slidably connected with the rotating cylinder.

[0026] An adjusting ring is rotatably arranged on the rotating ring, and the adjusting ring is threadedly connected with the rotating cylinder.

[0027] Further, the moving smoothing unit further comprises:

[0028] A first damping ring is arranged on the goose neck pipe;

[0029] A first rotating frame is arranged on the first damping ring in a rotating manner, and the first rotating frame is connected with the goose neck pipe in a rotating manner;

[0030] A first connecting rod is arranged on the first rotating frame in a rotating manner;

[0031] A counterweight is arranged on one end of the first connecting rod;

[0032] A second damping ring is arranged on the rotating cylinder;

[0033] A second rotating frame is arranged on the second damping ring in a rotating manner, and the second rotating frame is connected with the rotating cylinder in a rotating manner;

[0034] A second connecting rod is arranged on the second rotating frame in a rotating manner, and one end of the second connecting rod is connected with the first connecting rod in a rotating manner.

[0035] Further, the mobile smoothing unit further comprises:

[0036] A taper thread knob is arranged in a taper thread groove arranged on one end of the second connecting rod;

[0037] A rubber strip is arranged on the taper thread groove of the second connecting rod in an annular manner, one side of the rubber strip is in contact with the first connecting rod, and the rubber strip is in close contact with the taper thread knob.

[0038] Further, the support auxiliary unit further comprises:

[0039] A support sleeve is arranged on the goose neck pipe;

[0040] Bent rods are arranged on the support sleeve in a symmetrical manner;

[0041] A torsional spring is arranged on one end of the bent rod, and the other end of the torsional spring is fixed to the support sleeve;

[0042] A flexible rotating rod is arranged on the bent rods arranged in a symmetrical manner.

[0043] Further, the support auxiliary unit further comprises:

[0044] Universal ball bearings are arranged on the bent rods in an up-and-down manner.

[0045] Further, the support auxiliary unit further comprises:

[0046] The support sleeve is provided with a cylindrical slot, and the clamping column is slidably arranged in the cylindrical slot.

[0047] The third spring is arranged between the clamping column and the cylindrical slot.

[0048] The present application has the following advantages:

[0049] 1、The present application is provided with the telescopic pipe, when the gap of the steel structure welding position is wide, the staff swings the handle left and right, the support cylinder drives the rotating cylinder to rotate, and then the rotating cylinder extrudes the telescopic pipe, the volume of the telescopic pipe is reduced, the gas pressure in the telescopic pipe is increased, and then the thrust which restrains the rotating cylinder from rotating continuously and drives the rotating cylinder to reset is generated, so that the rotating cylinder rotates smoothly during the left and right movement, the rotating cylinder drives the gooseneck pipe to move stably through the conductive part, the staff's hand shaking is prevented, the welding wire moves stably, the welding seam formed by welding is uniform in thickness, the welding tumor caused by the uneven welding seam thickness is avoided, and the internal stress, cracks, bubbles and other structural defects caused by the cooling of the welding seam are avoided, so that the welding quality is ensured.

[0050] 2、The present application is provided with the first spring and the second spring, when the rotating cylinder moves axially, the gooseneck pipe remains stationary due to inertia at the moment of the axial movement of the rotating cylinder, the axial movement of the rotating cylinder deforms the first spring and the second spring, and then the gooseneck pipe moves under the elastic force release of the first spring and the second spring, so that the gooseneck pipe moves stably through the conductive part, the staff's hand shaking is prevented, the welding wire moves stably, the welding seam formed by welding is uniform in thickness, the welding tumor caused by the uneven welding seam thickness is avoided, and the internal stress, cracks, bubbles and other structural defects caused by the cooling of the welding seam are avoided, so that the welding quality is ensured.

[0051] 3、The present application is provided with the bending rod and the flexible rotating rod, when the staff welds a straight welding seam with a small width, the gooseneck pipe drives the welding wire to approach the welding seam through the conductive part, and drives one end of the bending rod to move through the support sleeve, so that one end of the bending rod rotates along the connection with the support sleeve, and the flexible rotating rod limits the two bending rods to keep the same rotation angle, so that the welding wire keeps the same angle with the surfaces of the two steel structure parts, and the welding wire can be aligned with the gap of the steel structure at the best angle, so that the welding seam is uniform in thickness along the width direction, the internal stress, cracks, bubbles and other structural defects caused by the cooling of the welding seam are avoided, and the welding quality is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0053] Figure 2The cross-sectional view of the gooseneck tube of the present application;

[0054] Figure 3 The exploded view of the supporting cylinder, rotating cylinder, gooseneck tube and nozzle of the present application;

[0055] Figure 4 The cross-sectional view of the supporting cylinder of the present application;

[0056] Figure 5 The cross-sectional view of the rotating cylinder of the present application;

[0057] Figure 6 The enlarged view of A of the present application; Figure 5

[0058] Figure 7 The cross-sectional view of the first rotating frame and the second rotating frame of the present application;

[0059] Figure 8 The structural view of the second connecting rod of the present application;

[0060] Figure 9 The cross-sectional view of the second connecting rod of the present application;

[0061] Figure 10 The cross-sectional view of the supporting auxiliary unit of the present application;

[0062] Figure 11 The enlarged view of B of the present application. Figure 10

[0063] In the above drawings: 1: handle, 2: supporting cylinder, 3: rotating cylinder, 301: sliding groove, 4: rotating smoothing unit, 401: telescopic tube, 402: screw knob, 403: pressing knob, 5: moving smoothing unit, 501: first sliding ring, 502: first spring, 503: second sliding ring, 504: second spring, 506: adjusting ring, 505: rotating ring, 507: first damping ring, 508: first rotating frame, 509: first connecting rod, 510: counterweight, 511: second damping ring, 512: second rotating frame, 513: second connecting rod, 514: taper screw knob, 515: rubber strip, 6: gooseneck tube, 601: nozzle, 7: supporting auxiliary unit, 701: supporting sleeve, 7011: cylindrical groove, 702: bent rod, 7021: spherical groove, 703: torsion spring, 704: flexible rotating rod, 705: universal ball, 706: clamping column, 707: third spring. DETAILED DESCRIPTION

[0064] ​​The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0065] Example 1

[0066] A welding device for steel structure joints in buildings, such as Figures 1-4 As shown, the device includes a handle 1, a support cylinder 2, a rotating cylinder 3, a rotation smoothing unit 4, a movement smoothing unit 5, a gooseneck tube 6, a nozzle 601, and a support auxiliary unit 7. The support cylinder 2 is fixed to one end of the handle 1, and the rotating cylinder 3 is rotatably connected to the support cylinder 2. The rotation smoothing unit 4 is located on both the rotating cylinder 3 and the support cylinder 2 to ensure smooth left and right rotation of the rotating cylinder 3 and prevent excessive speed when welding wide seams of steel structures. The movement smoothing unit 5 is located on the rotating cylinder 3 to moderate the speed of the welding wire during movement and prevent uneven distribution of molten weld metal at the weld seam. The gooseneck tube 6 is located on the movement smoothing unit 5. One end of the gooseneck tube 6 is equipped with a conductive component for melting the welding wire. The conductive component also has the function of positioning the welding wire, including a conductive nozzle and a shunt, etc. (all of which are existing technologies, so their specific structures and working principles are not described in detail). Nozzle 601 is threadedly attached to one end of gooseneck tube 6. Support auxiliary unit 7 is set on gooseneck tube 6 to assist in positioning the position and angle of steel structure and welding wire, preventing the welding angle of welding wire from shifting around the weld as the axis, ensuring uniform weld thickness along the width direction, and guaranteeing weld quality. When welding wider welds, workers need to weld a support bridge between welds first, and then move the welding wire left and right to fill the weld. Rotation smoothing unit 4 can make wide welds more uniform. In addition, if the welding wire stays at the weld for too long, it will cause welding defects such as weld beads. Movement smoothing unit 5 can make the welding wire move more smoothly. During the welding process, the greater the tilt angle between the welding wire and the steel structure surface, the more uneven the weld thickness will be when the weld melts. Support auxiliary unit 7 can limit the welding angle of welding wire and ensure weld quality.

[0067] like Figures 3-4As shown, the rotation smoothing unit 4 includes telescopic tubes 401 and screw knobs 402, the telescopic tubes 401 are symmetrically fixed on the support cylinder 2 at one end, there are two telescopic tubes 401, the other end of the telescopic tubes 401 is fixed on the rotating cylinder 3, and the inside of the telescopic tubes 401 is filled with gas, so that when the rotating cylinder 3 rotates on the support cylinder 2, the rotating cylinder 3 will squeeze the telescopic tubes 401 to make the telescopic tubes 401 contract, so that the gas in the telescopic tubes 401 is compressed, and the compression of the gas in the telescopic tubes 401 can keep the pressure of the gas on the rotating cylinder 3 to rotate smoothly, so as to ensure the smooth movement of the welding wire when the rotating cylinder 3 rotates, the screw knobs 402 are symmetrically distributed and screwed on the rotating cylinder 3, one end of the screw knobs 402 is located inside the telescopic tubes 401, and the screw knobs 402 can adjust the length inside the telescopic tubes 401 when rotating, so that the screw knobs 402 squeeze the gas in the telescopic tubes 401, thereby increasing the pressure of the gas in the telescopic tubes 401 on the rotating cylinder 3.

[0068] As shown in Figure 4 , the rotation smoothing unit 4 further includes a compression knob 403, the compression knob 403 is screwed on the support cylinder 2, the bottom end of the compression knob 403 has a larger roughness coefficient, and the bottom end of the compression knob 403 contacts the rotating cylinder 3, so that the friction generated by the rotating cylinder 3 being squeezed by the compression knob 403 is hindered when rotating, thereby reducing the sensitivity of the rotating cylinder 3.

[0069] As shown in Figures 5-7 , the movement smoothing unit 5 includes a first sliding ring 501 and a first spring 502, the rotating cylinder 3 has a sliding groove 301 annularly distributed, the first sliding ring 501 is installed on the sliding groove 301 through the first ball inside, the first sliding ring 501 is fixedly connected with the goose neck pipe 6, so that the goose neck pipe 6 can slide on the rotating cylinder 3 through the first sliding ring 501 without large resistance, one end of the first spring 502 is fixedly connected with the first sliding ring 501, and the other end of the first spring 502 is fixedly connected with the rotating cylinder 3, for smoothing the sliding of the goose neck pipe 6 on the rotating cylinder 3 through the first sliding ring 501.

[0070] As shown in Figure 3 and Figures 5-7As shown, the moving smoothing unit 5 further comprises a second sliding ring 503, a second spring 504, a rotating ring 505 and an adjusting ring 506. The second sliding ring 503 is mounted on the sliding groove 301 through second ball bearings, and is fixedly connected with the gooseneck pipe 6, so that the gooseneck pipe 6 can slide on the rotating cylinder 3 through the first sliding ring 501 and the second sliding ring 503, and the second sliding ring 503 can support the gooseneck pipe 6 to make the gooseneck pipe 6 more stable during the movement. One end of the second spring 504 is fixedly connected with one end of the second sliding ring 503, and is used to smooth the sliding of the gooseneck pipe 6 on the rotating cylinder 3 through the second sliding ring 503. The rotating ring 505 is slidingly arranged on the rotating cylinder 3, and the other end of the second spring 504 is fixedly connected with the rotating ring 505. The adjusting ring 506 is rotatably arranged on the rotating ring 505, and is threadedly connected with the rotating cylinder 3. The adjusting ring 506 can adjust its position on the rotating cylinder 3 through the thread, and then adjust the compression degree of the second spring 504 through the rotating ring 505, so that the second spring 504 can adjust the position of the gooseneck pipe 6 at the rotating cylinder 3, change the gravity distribution of the gooseneck pipe 6 on the rotating cylinder 3, and then adjust the rotation sensitivity of the rotating cylinder 3.

[0071] As Figures 5-6 and Figures 8-9As shown, the moving smoothing unit 5 further comprises a first damping ring 507, a first rotating frame 508, a first connecting rod 509, a counterweight 510, a second damping ring 511, a second rotating frame 512, and a second connecting rod 513. The first damping ring 507 is arranged on the goose neck pipe 6. The first rotating frame 508 is rotatably arranged on the first damping ring 507 and is rotatably connected with the goose neck pipe 6. The first connecting rod 509 is rotatably arranged on the first rotating frame 508. The counterweight 510 is arranged on one end of the first connecting rod 509. The first damping ring 507 limits the rotation of the first rotating frame 508, preventing the first rotating frame 508 from rotating too sensitively under the gravity of the counterweight 510 when the worker adjusts the posture of the device when holding the device, thereby avoiding the first rotating frame 508 from interfering with the stable welding of the welding wire through centrifugal force when rotating. The second damping ring 511 is arranged on the rotating cylinder 3. The second rotating frame 512 is rotatably arranged on the second damping ring 511 and is rotatably connected with the rotating cylinder 3, so that the second damping ring 511 limits the rotation of the second rotating frame 512, preventing the second rotating frame 512 from rotating too sensitively under the gravity of the counterweight 510 when the worker adjusts the posture of the device when holding the device, thereby avoiding the second rotating frame 512 from interfering with the stable welding of the welding wire through centrifugal force when rotating. The second connecting rod 513 is rotatably arranged on the second rotating frame 512 and is rotatably connected with one end of the first connecting rod 509. When the rotating cylinder 3 is in a vertical posture, the counterweight 510 uses the first connecting rod 509 as a lever and uses the connection between the second connecting rod 513 and the first connecting rod 509 as a fulcrum to support the first rotating frame 508, thereby balancing the gravity of the counterweight 510 with the first rotating frame 508, the first damping ring 507, the goose neck pipe 6, the nozzle 601, and the supporting auxiliary unit 7, preventing the first rotating frame 508, the first damping ring 507, the goose neck pipe 6, the nozzle 601, and the supporting auxiliary unit 7 from making the goose neck pipe 6 slide up and down at the rotating cylinder 3 through gravity, and improving the stability of the worker when holding the device for welding.

[0072] As shown, Figures 8-9 The moving smoothing unit 5 further comprises a tapered thread knob 514 and a rubber strip 515. One end of the second connecting rod 513 is provided with a tapered thread groove. The tapered thread knob 514 is arranged in the tapered thread groove. The rubber strip 515 is arranged in a ring shape on the tapered thread groove of the second connecting rod 513. One side of the rubber strip 515 contacts the first connecting rod 509, and the rubber strip 515 is in close contact with the tapered thread knob 514. By adjusting the position of the tapered thread knob 514 in the tapered thread groove of the second connecting rod 513, the pressure of the rubber strip 515 on the first connecting rod 509 is adjusted, so that the balance of the gravity at the counterweight 510 and the goose neck pipe 6 can be adjusted according to the actual construction situation, thereby improving the applicability of the device.

[0073] The worker will first clean the steel structure to be welded, remove the protective layer and contaminants on the surface of the steel structure, then fix the steel structure, insert the welding wire into the handle 1, make one end of the welding wire pass through the supporting cylinder 2, and after passing through the rotating cylinder 3, enter the goose neck pipe 6, so that the conductive part in the goose neck pipe 6 is penetrated by the welding wire and contacted, and then the conductive part limits the welding wire, and the worker makes one end of the welding wire exposed to the nozzle 601. When the worker moves the handle 1, the handle 1 drives the rotating cylinder 3 to move through the supporting cylinder 2, and the rotating cylinder 3 drives the goose neck pipe 6 to move through the first sliding ring 501 and the second sliding ring 503, so that the goose neck pipe 6 drives the welding wire to align the gap of the steel structure through the conductive part. When the welding wire contacts the steel structure, the conductive part is electrified, and the current of the conductive part is transmitted to the steel structure through the welding wire, and then the current spreads to the ground. Because the cross-sectional diameter of the welding wire is small, the resistance of the welding wire is large, and the current passing through the welding wire is large, so that the welding wire and the steel structure generate an electric arc, and a large amount of heat is generated at the same time, so that the welding wire is melted. Then the worker moves the whole device, and the welding wire moves along the gap of the steel structure welding place with the nozzle 601, realizing the welding of the steel structure. When the welding wire starts to move along the gap of the steel structure welding place with the nozzle 601, the rotating cylinder 3 keeps the same direction with the gap of the steel structure welding place, and the goose neck pipe 6 keeps still at the moment of the axial movement of the rotating cylinder 3 due to inertia, so that the welding wire, the first sliding ring 501 and the second sliding ring 503 are kept still. The first spring 502 is extruded by the axial movement of the rotating cylinder 3, and the rotating ring 505 is driven to move synchronously by the adjusting ring 506, so that the second spring 504 is stretched. Then the elastic force of the first spring 502 and the second spring 504 is released, so that the first spring 502 overcomes the inertia of the first sliding ring 501 and makes the first sliding ring 501 move axially along the rotating cylinder 3, and the second spring 504 overcomes the inertia of the second sliding ring 503 and makes the second sliding ring 503 move axially along the rotating cylinder 3. The first sliding ring 501 and the second sliding ring 503 drive the goose neck pipe 6 to move together, so that the goose neck pipe 6 drives the welding wire to move synchronously through the conductive part. Because the movement of the first sliding ring 501 and the second sliding ring 503 is mainly driven by the first spring 502 and the second spring 504, the first spring 502 and the second spring 504 will delay the movement of the first sliding ring 501 and the second sliding ring 503, so that the movement of the goose neck pipe 6 lags behind the rotating cylinder 3. In the deformation process of the first spring 502 and the second spring 504, the pushing force from the rotating cylinder 3 is absorbed and slowly released, so that the goose neck pipe 6 moves more smoothly on the rotating cylinder 3. The goose neck pipe 6 drives the welding wire to move synchronously through the conductive part, so that the welding wire moves smoothly, preventing the worker from causing the welding wire to move unstably due to hand shaking, so that the welding seam formed by welding is uniform in thickness, avoiding the formation of welding beads due to uneven welding seam thickness, and avoiding the formation of internal stress, cracks, bubbles and other structural defects when the welding seam cools down, thereby ensuring the quality of the welding seam.Moreover, in order to ensure the welding quality of the steel structure, the greater the thickness of the welded part of the steel structure, the greater the gap width of the steel structure that needs to be left for the weld. When welding a wide steel structure gap, the worker needs to swing the handle 1 left and right to make the welding wire move back and forth in the steel structure gap, so that the welding wire melts in the steel structure gap and forms a weld. Among them, the handle 1 drives the supporting cylinder 2 to move synchronously, and the supporting cylinder 2 is rotationally connected with the rotating cylinder 3. During the movement of the supporting cylinder 2, the rotating cylinder 3 has a tendency to remain stationary due to inertia, so that the rotating cylinder 3 is dragged by the supporting cylinder 2 to rotate. The rotating cylinder 3 will squeeze one of the telescopic pipes 401 and stretch the other telescopic pipe 401 during rotation. When the telescopic pipe 401 is compressed, the volume inside the telescopic pipe 401 decreases, so that the volume of the gas inside the telescopic pipe 401 decreases, the gas pressure inside the telescopic pipe 401 increases, and then a pushing force is generated to inhibit the continuous rotation of the rotating cylinder 3 and drive the rotating cylinder 3 to reset. When the telescopic pipe 401 is stretched, the volume inside the telescopic pipe 401 increases, so that the volume of the gas inside the telescopic pipe 401 increases, the gas pressure inside the telescopic pipe 401 decreases, and then a pulling force is generated to inhibit the continuous rotation of the rotating cylinder 3 and drive the rotating cylinder 3 to reset. The gas pressure in the two telescopic pipes 401 acts on the rotating cylinder 3 together, so that the rotating cylinder 3 rotates smoothly during left and right movement. The rotating cylinder 3 drives the goose neck pipe 6 to rotate synchronously through the first sliding ring 501 and the second sliding ring 503, and then the conductive part in the goose neck pipe 6 drives the welding end of the welding wire to move smoothly, preventing the worker from causing the welding wire to move at an unstable speed due to hand shaking, so that the welding end of the welding wire does not change too fast, the thickness of the weld formed by welding is more uniform, and the weld thickness is not uniform to form a weld tumor, thereby avoiding the formation of internal stress, cracks, bubbles and other structural defects when the weld cools down, and ensuring the weld quality.

[0074] It is worth noting that when the rotating cylinder 3 assumes an upright posture, the goose neck pipe 6 will have a tendency to stretch the first spring 502 through its own gravity, and the second sliding ring 503 will have a tendency to compress the second spring 504. At this time, the counterweight 510 takes the first connecting rod 509 as a lever and the connection between the second connecting rod 513 and the first connecting rod 509 as a fulcrum to support the first rotating frame 508, so that the first rotating frame 508 is squeezed by the first connecting rod 509 to offset the gravity of the goose neck pipe 6, avoiding the situation that the goose neck pipe 6, the first sliding ring 501 and the second sliding ring 503 intensify the deformation of the first spring 502 and the second spring 504 through gravity. When the rotating cylinder 3 assumes an upright posture, the goose neck pipe 6 moves smoothly and stably along the axis of the rotating cylinder 3, the distribution of the welding material during the welding process is more uniform, thereby avoiding the formation of weld tumors due to uneven weld thickness and the formation of internal stress, cracks, bubbles and other structural defects when the weld cools down, and further ensuring the weld quality.

[0075] It is worth noting that in the welding process of the above-mentioned thick steel structure, the steel structure gap is often wide, and the welding wire needs to move back and forth, however, when the gooseneck pipe 6 is too far away from the support cylinder 2, the horizontal movement of the support cylinder 2 will pull the rotating cylinder 3, which will cause the rotating cylinder 3 to be subjected to too large torque, thereby causing the rotating cylinder 3 to rotate too fast and difficult to control, in addition, when the total mass of the rotating cylinder 3, the rotating smoothing unit 4, the moving smoothing unit 5, the gooseneck pipe 6, the nozzle 601 and the support auxiliary unit 7 is large, it will also cause the rotating cylinder 3 to rotate too fast and difficult to control, which makes the rotating cylinder 3 unstable, for this, the staff can adjust the pressure of the pressure knob 403 on the rotating cylinder 3 before welding the steel structure, thereby adjusting the friction of the rotating cylinder 3 when rotating, and roughly adjusting the rotating sensitivity of the rotating cylinder 3, the greater the pressure of the pressure knob 403 on the rotating cylinder 3, the greater the friction of the rotating cylinder 3 when rotating, thereby adapting the torque of the rotating cylinder 3 when rotating, making the rotating cylinder 3 more stable when rotating left and right, the rotating cylinder 3 rotates the gooseneck pipe 6 synchronously through the first sliding ring 501 and the second sliding ring 503 when rotating, thereby making the gooseneck pipe 6 ensure the stability of the welding wire welding end when moving through the conductive part, further ensuring the uniformity of the welding material in the welding process, thereby further improving the quality of the weld.

[0076] Notably, in the welding process of the above-mentioned thick steel structure, when the gooseneck pipe 6 is too close to the support cylinder 2, the center of mass of the rotating cylinder 3, the rotating smoothing unit 4, the moving smoothing unit 5, the gooseneck pipe 6, the nozzle 601, and the support auxiliary unit 7 will also be too close to the connection between the support cylinder 2 and the rotating cylinder 3, thereby reducing the torque received by the rotating cylinder 3 when it rotates. In addition, the pressure of the compression knob 403 on the rotating cylinder 3 is too large, making the friction force received by the rotating cylinder 3 when it rotates too large, and the torque received by the rotating cylinder 3 when it rotates is reduced and the pressure received by the rotating cylinder 3 is too large, all of which make it difficult for the rotating cylinder 3 to rotate, making the rotating cylinder 3 more susceptible to the influence of the worker's hand shaking when rotating, and the rotating cylinder 3 is not easy to stabilize. To this end, the worker can adjust the rotating sensitivity of the rotating cylinder 3 by adjusting the compression knob 403, and then rotate the adjusting ring 506 to adjust the position of the adjusting ring 506 on the rotating cylinder 3 by screwing. When the adjusting ring 506 gradually moves away from the gooseneck pipe 6, the adjusting ring 506 gradually moves away from the gooseneck pipe 6, thereby causing the first spring 502 and the second spring 504 to simultaneously release due to the reduction in pressure, and the first sliding ring 501 and the second sliding ring 503 are driven to slide on the rotating cylinder 3, respectively, thereby causing the gooseneck pipe 6 to gradually approach the support cylinder 2. By adjusting the position of the gooseneck pipe 6 at the rotating cylinder 3, the rotating sensitivity of the rotating cylinder 3 is precisely adjusted, making the rotating cylinder 3 more stable when rotating left and right. The rotating cylinder 3 rotates synchronously with the gooseneck pipe 6 through the first sliding ring 501 and the second sliding ring 503 when rotating, thereby causing the gooseneck pipe 6 to ensure the stability of the welding wire welding end when moving through the conductive parts, further ensuring the uniformity of the welding material during welding, thereby further improving the quality of the weld.

[0077] Notably, according to different steel structure welding requirements, the worker needs to use different welding wire diameters and adjust the welding wire movement speed during welding, wherein different welding wire diameters will affect the total mass at the gooseneck pipe 6, thereby affecting the balancing effect of the counterweight 510 on the gooseneck pipe 6. The poor balancing effect of the counterweight 510 on the gooseneck pipe 6 will cause the welding wire to move unstably, thereby reducing the quality of the weld. To this end, the worker can rotate the tapered screw knob 514 before welding the steel structure, causing the tapered screw knob 514 to move within the tapered threaded groove of the second connecting rod 513 and squeeze the rubber strip 515. When the rubber strip 515 is squeezed, it will squeeze the first connecting rod 509, thereby increasing the friction between the rubber strip 515 and the first connecting rod 509, reducing the rotating sensitivity of the first connecting rod 509, and allowing the counterweight 510 to adapt to welding wires of different diameters.

[0078] It is worth noting that due to the space limitation of the welding environment, the worker will hold the handle 1 obliquely when welding the steel structure, so that the device as a whole is inclined, and the inclination of the device as a whole will cause the inclination of the welding wire, and the welding wire cannot maintain the optimal angle for welding, and the inclination of the device will increase the difficulty of the worker's welding operation, reduce the welding efficiency, and further reduce the quality of the weld, and increase the possibility of structural defects in the weld. To this end, the worker can rotate the threaded knob 402 to adjust the length of the threaded knob 402 extending into the telescopic pipe 401. When the length of the threaded knob 402 extending into one side of the telescopic pipe 401 is lengthened, the threaded knob 402 will compress the gas in one side of the telescopic pipe 401, so that the gas pressure in one side of the telescopic pipe 401 is increased. The gas in one side of the telescopic pipe 401 pushes the rotating cylinder 3 to incline, on the one hand, the rotating cylinder 3 lengthens one side of the telescopic pipe 401 and squeezes the other side of the telescopic pipe 401, on the other hand, the rotating cylinder 3 inclines to drive the goose neck pipe 6 to rotate synchronously through the first sliding ring 501 and the second sliding ring 503, so that the goose neck pipe 6 drives the welding wire to incline synchronously through the conductive part, so that the worker can hold the handle 1 while the welding wire maintains the optimal angle for welding, thereby reducing the difficulty of the worker's welding operation, improving the worker's welding efficiency, and further improving the quality of the weld.

[0079] Embodiment 2

[0080] On the basis of embodiment 1, as shown in Figures 1-3 and Figures 10-11 The support auxiliary unit 7 includes a support sleeve 701, a bent rod 702, a torsional spring 703 and a flexible rotating rod 704. The support sleeve 701 is fixedly connected to the goose neck pipe 6. The bent rods 702 are symmetrically arranged on the support sleeve 701. One end of the torsional spring 703 is arranged on the bent rod 702, and the other end of the torsional spring 703 is fixedly connected to the support sleeve 701, so that one end of the bent rod 702 can be self-approached to the nozzle 601. The flexible rotating rod 704 is arranged on the two bent rods 702, so that the rotating angles of the two bent rods 702 are always kept the same. The bent rod 702 limits the welding angle of the welding wire at the weld, so that the weld formed by welding is uniform in thickness along the width direction, and the quality of the weld is guaranteed.

[0081] As shown in Figure 10 The support auxiliary unit 7 further includes universal ball bearings 705 arranged on the bent rods 702 in an up-down distribution. The universal ball bearings 705 prevent the interference of uneven friction force generated by the direct contact between the bent rods 702 and the steel structure on the movement of the welding wire, thereby improving the stability of the movement of the welding wire during welding.

[0082] As shown in Figure 11As shown, the support auxiliary unit 7 further comprises a clamping column 706 and a third spring 707. The support sleeve 701 is provided with a cylindrical groove 7011. The clamping column 706 is slidably arranged in the cylindrical groove 7011. The curved rod 702 is provided with a spherical groove 7021 capable of cooperating with the clamping column 706. One end of the third spring 707 is arranged on the clamping column 706. The other end of the third spring 707 is fixedly connected with the cylindrical groove 7011 of the curved rod 702. The third spring 707 can restrict the clamping column 706 in the spherical groove 7021 by elastic force, so as to restrict the angle of the curved rod 702. When the device is used for welding in a narrow space, the interference of the curved rod 702 to the welding process can be avoided.

[0083] When the worker welds a straight weld with small width, in order to further ensure the stability of the movement of the welding wire during the welding process, the worker can abut the universal ball 705 against the surface of the two steel structure parts. The worker moves the handle 1 close to the gap of the steel structure, so that the handle 1 drives the rotating cylinder 3 to move through the support cylinder 2. The rotating cylinder 3 drives the goose neck pipe 6 to move through the first sliding ring 501 and the second sliding ring 503. Thus, the goose neck pipe 6 drives the welding end of the welding wire to contact the gap of the steel structure through the conductive part. The goose neck pipe 6 drives one end of the curved rod 702 to move through the support sleeve 701 during the movement, so that one end of the curved rod 702 rotates along the connection with the support sleeve 701. The other end of the curved rod 702 pushes the universal ball 705 to roll on the surface of the steel structure part. The flexible rotating rod 704 restricts the two curved rods 702 to always keep the same rotation angle, so that the welding wire keeps the same included angle with the surface of the two steel structure parts. The welding wire can be aligned with the gap of the steel structure at the best angle, so as to make the weld thickness uniform in the width direction, avoid the internal stress, cracks, bubbles and other structural defects generated when the weld cools down, and further ensure the weld quality.

[0084] When the welding environment is narrow, the curved rod 702 will interfere with the welding process. The worker rotates one of the curved rods 702, so that the spherical groove 7021 on the curved rod 702 abuts against the clamping column 706. The rotation of one of the curved rods 702 drives the other curved rod 702 to rotate through the flexible rotating rod 704. The rotation of the curved rod 702 deforms the torsional spring 703 to store energy. When the spherical groove 7021 on the curved rod 702 abuts against the clamping column 706, the third spring 707 releases to push the clamping column 706, so that the clamping column 706 is clamped in the spherical groove 7021, thereby restricting the rotation of the curved rod 702. When the worker needs to use the curved rod 702, the curved rod 702 is pushed at the same time by the pushing force of the worker and the elastic force released by the torsional spring 703. The spherical surface of the spherical groove 7021 extrudes the clamping column 706 upward. The clamping column 706 resets by overcoming the elastic force of the third spring 707, so that the curved rod 702 is released from the restriction of the clamping column 706.

[0085] The above embodiments are provided to those skilled in the art to implement or use the present application, and the skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive idea of the present application, and thus the protection scope of the present application is not limited by the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A welding apparatus for a building steel structure joint, The utility model relates to a welding device for steel structure, its characterized in be including: handle (1), support cylinder (2) is set up in one end of handle (1), rotating cylinder (3) is rotatory and is set up on support cylinder (2), rotating smooth unit (4) is set up on rotating cylinder (3) with support cylinder (2), is used for making rotating cylinder (3) left and right rotation smooth, prevents rotating cylinder (3) when the wide gap of welded steel structure speed too fast, mobile smooth unit (5) is set up on rotating cylinder (3), is used for the speed of the gentle welding wire when moving, prevents the uneven distribution of solder on steel structure, goose neck pipe (6) is set up on mobile smooth unit (5), and the electrically conductive part of melting welding wire is installed in goose neck pipe (6) inside, nozzle (601) is set up in one end of goose neck pipe (6), and support auxiliary unit (7) is set up on goose neck pipe (6), is used for the position and angle of auxiliary positioning steel structure and welding wire, Rotating smooth unit (4) includes: telescopic pipe (401) is symmetrically distributed and set up between support cylinder (2) and rotating cylinder (3), and the inside of telescopic pipe (401) is full of gas. ​ Threaded knob (402) is set on the rotating cylinder (3) by threaded mirror image distribution, one end of the threaded knob (402) is located inside the telescopic tube (401); The moving smooth unit (5) comprises: the first sliding ring (501), the rotating cylinder (3) is annularly distributed with a sliding groove (301), the first sliding ring (501) is slidably arranged on the sliding groove (301), and the first sliding ring (501) is fixedly connected with the goose neck pipe (6); The first spring (502) is arranged between the first sliding ring (501) and the rotating cylinder (3); The moving smooth unit (5) further comprises: the second sliding ring (503), the second sliding ring (503) is arranged on the sliding groove (301), and the second sliding ring (503) is fixedly connected with the goose neck pipe (6); The second spring (504) is arranged at one end of the second sliding ring (503); The rotating ring (505) is arranged at one end of the second spring (504), and the rotating ring (505) is sleeved and slidably connected with the rotating cylinder (3); The adjusting ring (506) is rotatably arranged on the rotating ring (505), and the adjusting ring (506) is threadedly connected with the rotating cylinder (3); The supporting auxiliary unit (7) comprises: the supporting sleeve (701) is arranged on the goose neck pipe (6); The bent rod (702) is symmetrically arranged on the supporting sleeve (701); One end of the torsion spring (703) is arranged on the bent rod (702), and the other end of the torsion spring (703) is fixedly connected with the supporting sleeve (701); The flexible rotating rod (704) is arranged on the symmetrically distributed bent rod (702).

2. A welding apparatus for a building steel structure joint according to claim 1, characterized in that, The rotating smooth unit (4) further comprises: the compression knob (403) is arranged on the supporting cylinder (2) by threads, the bottom end of the compression knob (403) has a larger roughness coefficient, and the bottom end of the compression knob (403) contacts the rotating cylinder (3).

3. The apparatus of claim 1, wherein the apparatus is characterized by: The mobile smoothing unit (5) further comprises: a first damping ring (507) arranged on the goose neck pipe (6); a first rotating frame (508) rotatably arranged on the first damping ring (507), and the first rotating frame (508) is rotatably connected with the goose neck pipe (6); a first connecting rod (509) rotatably arranged on the first rotating frame (508); a counterweight (510) arranged on one end of the first connecting rod (509); a second damping ring (511) arranged on the rotating cylinder (3); a second rotating frame (512) rotatably arranged on the second damping ring (511), and the second rotating frame (512) is rotatably connected with the rotating cylinder (3); and a second connecting rod (513) rotatably arranged on the second rotating frame (512), and one end of the second connecting rod (513) is rotatably connected with the first connecting rod (509).

4. A welding apparatus for a building steel structure joint according to claim 3, characterized in that, The mobile smoothing unit (5) further comprises: a tapered thread knob (514), one end of the second connecting rod (513) is provided with a tapered thread groove, and the tapered thread knob (514) is arranged in the tapered thread groove; and a rubber strip (515) arranged in a ring shape on the tapered thread groove of the second connecting rod (513), one side of the rubber strip (515) contacts the first connecting rod (509), and the rubber strip (515) is in extrusion fit with the tapered thread knob (514).

5. The apparatus of claim 1, wherein the apparatus is a building steel structure joint welding apparatus. The support auxiliary unit (7) further comprises: universal ball bearings (705) arranged on the bending rod (702) in an up-down distribution.

6. The apparatus of claim 1, wherein the apparatus is a building steel structure joint welding apparatus. The support auxiliary unit (7) further comprises: a clamping column (706), a cylindrical groove (7011) is arranged on the support sleeve (701), the clamping column (706) is slidably arranged in the cylindrical groove (7011), and a spherical groove (7021) capable of cooperating with the clamping column (706) is arranged on the bending rod (702); and a third spring (707) arranged between the clamping column (706) and the cylindrical groove (7011).

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