Movable welding device for highway prefabricated box girder reinforcement cage

Abstract

The invention discloses a movable welding device for a highway prefabricated box girder steel reinforcement framework, relates to the technical field of movable welding, and aims to solve the technical problem that when an existing welding device is used for welding steel reinforcement cross points of the box girder steel reinforcement framework, arrangement and use states of welding guns are insufficient. The tops of the two bottom plates are fixedly connected with two guide rails through first bolts, and the tops of the two guide rails are jointly and slidably connected with a moving block. According to the welding mechanism, two welding gun using modes are achieved through the lead screw; when the supporting plate is unfolded, the lead screws enable the two sets of linearly-arranged welding guns to be inclined to be matched with the shape of a box girder steel reinforcement framework, and the welding efficiency of steel reinforcement intersection points is improved. When the screw rod moves upwards, the two groups of welding guns can be arranged in a linear array on the same horizontal plane; the adjusting assembly can adjust the welding angles of the two welding guns correspondingly, and adaptability is improved; and a limiting structure is further designed to prevent the welding gun from horizontally moving and shaking, and the adjusting cylinder rotates under torque during horizontally moving to achieve multi-angle welding.

Description

Technical Field

[0001] The invention relates to the technical field of mobile welding, and more specifically to a mobile welding device for a highway prefabricated box girder steel bar skeleton. Background Art

[0002] In highway bridge construction, the welding quality of the steel frame of prefabricated box girders plays a decisive role in the overall stability and safety of the bridge; however, there are many problems with the existing welding technology of the steel frame of prefabricated highway box girders, especially when welding at the intersection of steel bars, which exposes serious limitations; this directly affects the efficiency and quality of the welding work, and in turn threatens the overall quality and safety of the bridge.

[0003] As attached Fig.13 and Fig.14 As shown, the longitudinal steel bars and stirrups on both side plates are welded: in the two side plates of the prefabricated box girder, the longitudinal steel bars are usually arranged in parallel with equal intervals, and the stirrups pass through the longitudinal steel bars horizontally. The intersections of the longitudinal steel bars and the stirrups form a linear array, and welding these intersections is the linear array welding process; steel bar welding points at the corners of the box girder: at the rounded corners of the prefabricated box girder, the steel bars need to be arranged and welded according to the shape of the corner; the steel bars will form an arc-shaped transition, and the welding points will also form an arc shape to ensure the structural strength at the corners and the integrity of the steel bar connection. Traditional welding is mostly done manually, but the welding quality is inconsistent and the welding efficiency is low during manual welding.

[0004] The existing welding device has a relatively simple arrangement and usage status of the welding gun when welding the intersection points of the box girder reinforcement skeleton, and the welding gun position and angle cannot be flexibly adjusted, resulting in reduced efficiency of cross-positioning welding of the reinforcement. In view of this, we propose a mobile welding device for the highway prefabricated box girder reinforcement skeleton. Summary of the invention

[0005] The purpose of the present invention is to provide a mobile welding device for a highway prefabricated box girder steel frame to solve the technical problems of insufficient arrangement and use of welding guns when welding the intersections of the box girder steel frame steel bars in the existing welding devices.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a mobile welding device for a highway prefabricated box girder steel frame, comprising two bottom plates, the tops of the two bottom plates are fixedly connected to two guide rails by first bolts, the tops of the two guide rails are slidably connected to a moving block, the bottom of the moving block is arranged with a driving module, and the inside of the moving block is arranged with a welding mechanism; The welding mechanism comprises an adjusting cylinder and an adjusting assembly; the adjusting cylinder is movably sleeved on the inner wall of the moving block, and the adjusting assembly is arranged on the top of the moving block; The end surface of the adjusting cylinder is symmetrically structured and is movably connected to two first support plates through a first plug rod. Two adjustment modules are movably provided at the end of each of the first support plates through a first hinge frame. The ends of the two adjustment modules are movably connected to a transmission plate through a second hinge frame. A plurality of welding guns are arranged in a linear array on one side of the two adjustment modules. Two screw rods are fixedly connected to the top of the transmission plate in a symmetrical structure, and the screw rods pass through the adjusting cylinder. The tops of the two screw rods are movably connected to a transmission wheel through a first thread, and the transmission wheel is rotatably connected to the upper surface of the adjusting cylinder. The first bracket on the top of the adjusting cylinder is fixedly sleeved with a first motor The output end of the first motor is fixedly connected to a pulley, and the two transmission wheels are movably connected to the side surface of the pulley through a transmission belt. The welding mechanism of the present invention realizes two ways of using the welding gun through a screw rod; when the branch plate is supported, the screw rod makes the two groups of linearly arranged welding guns inclined, adapting to the shape of the box beam steel bar skeleton, and improving the welding efficiency of the steel bar intersection points; the screw rod moves upward, allowing the two groups of welding guns to be arranged in a linear array on the same horizontal plane; the adjustment component can adjust the welding angles of the two groups of welding guns respectively to improve adaptability; a limiting structure is also designed to prevent the welding gun from shaking during translation, and to enable the adjustment cylinder to rotate under torque during translation to achieve multi-angle welding.

[0007] Preferably, each of the adjustment modules is composed of a first hinge block, a second support plate and a second hinge block; The first hinge block is movably connected to the end of the first support plate through a first hinge frame, the second support plate is movably connected to one side of the first hinge block, a first sealed cavity is formed between the second support plate and the first hinge block through a sealing tube, a plurality of welding guns are fixedly sleeved on one side of the second support plate in a linear array, the second support plate is movably connected to the end of the transmission plate through a second hinge frame, a plurality of spiral bars are fixedly connected in an annular array in the upper hole of the second support plate, and a sliding track is formed between two adjacent spiral bars, a movable rod is fixedly connected to one end of the second support plate close to the second hinge block, a plurality of rollers are fixedly connected to the surface of the end of the movable rod in an annular array through a first latch, and the rollers are in rolling contact with the inside of the sliding track, a first air pump is fixedly connected to one side of the first support plate through a second bracket, and an output end of the first air pump is fixedly connected to the first sealed cavity through a first gas pipeline.

[0008] Preferably, the adjustment assembly includes two telescopic frames, and the two telescopic frames are symmetrically connected to the top of the moving block through the second pin, the inner walls on both sides of the moving block are symmetrically connected to two electric push rods through the third pin, and the electric push rods are movably connected to the telescopic frames through the first connecting frame, the two tops are symmetrically connected to four limit splints through the third pin, and adjacent limit splints are staggered, the four limit splints are commonly movably connected to the inside of the adjustment plate, and the top of the adjustment cylinder is rotatably connected to the inside of the adjustment plate.

[0009] Preferably, two limit blocks are fixedly connected inside each two relative limit clamps, a plurality of first springs are fixedly connected to one side of each limit block, each first spring is fixedly connected to a first slider away from the limit block, a movable unit is arranged inside the base plate, and the movable unit is sleeved on the surface of the adjusting cylinder.

[0010] Preferably, the top of the adjustment plate is symmetrically structured with four slide grooves, and the slide grooves correspond to the positions of the limiting clamps, the limiting blocks are slidably connected inside the slide grooves, and the first sliding blocks are slidably connected inside the slide grooves.

[0011] Preferably, the moving unit comprises a limiting cylinder, the limiting cylinder is movably sleeved on the side surface of the adjusting cylinder, and the limiting cylinder is sleeved inside the moving block, and the side surface of the limiting cylinder is movably sleeved with an I-shaped cylinder.

[0012] Preferably, a sliding cylinder is fixedly sleeved inside the moving block, and the I-shaped cylinder is slidably connected inside the sliding cylinder, and a plurality of strip grooves are symmetrically provided at both ends of the sliding cylinder, and a plurality of sliding blocks are fixedly connected to the inner walls of both sides of the I-shaped cylinder in a symmetrical structure, and the sliding blocks are slidably connected inside the strip grooves, and a rotating module is arranged on the inner wall of the moving block.

[0013] Preferably, a plurality of limit bars are fixedly connected to the inner wall of the limit cylinder in an annular array, and the limit bars are slidably connected to the upper groove of the adjustment cylinder.

[0014] Preferably, the rotating module comprises two transmission blocks, which are arranged in a circular array on the side surface of the adjusting cylinder, and the transmission blocks are slidably connected in the upper groove of the adjusting cylinder, and the inner wall of the moving block is fixedly connected to two mounting blocks in a circular array, and the two mounting blocks are movably connected to two arc-shaped outer shells through a fourth pin, and each of the arc-shaped outer shells is slidably connected to an arc plate.

[0015] Preferably, the arc plate and the transmission block are movably connected via a fifth latch, a second sealed cavity is formed between the end of the arc plate and the arc outer shell, two second air pumps are fixedly connected to the inner walls on both sides of the moving block, and the second air pump is fixedly connected to the second sealed cavity via a second air pipeline.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a welding mechanism to enable a plurality of welding guns to be used in two ways, wherein the support plate is propped open by a screw rod so that two groups of linearly arranged welding guns are inclined to match the shape of the box girder steel frame, thereby improving the welding efficiency of the steel bar intersection points, and the screw rod is moved upward so that the two groups of linearly arranged welding guns are arranged in a linear array on the same straight line while being on the same horizontal plane, and the same position multi-point welding effect is achieved by adjusting the assembly, that is, the design is made on the basis of the welding mechanism, and the welding angles of the two groups of linearly arranged welding guns can be adjusted separately to improve the adaptability of the device, and multiple designs are made on the basis of the adjusting assembly, so that the welding guns are limited when they are translated to avoid shaking and affecting the welding effect, and another design is to apply torque to the adjusting cylinder when the adjusting cylinder is translated to make it rotate, thereby achieving multi-angle welding effect and achieving the steel bar welding effect at the arc corner of the box girder.

[0017] 2. The present invention fills gas into the first sealed cavity through pneumatic components, so that the second support plate moves to one side, and the roller rolls in the sliding track to rotate the second support plate, thereby adjusting the welding angle of the welding gun and achieving multi-angle welding effects.

[0018] 3. The present invention sets an adjustment component, and when the two electric push rods work, the two telescopic frames rotate at the same time, adjust the height of the adjustment plate, and then realize the height adjustment of the adjustment cylinder. At the same time, when one of the electric push rods works, the telescopic frame rotates at an angle to apply a force to one side of the adjustment plate, so that the adjustment cylinder translates. The present invention has a mechanism with two degrees of freedom in the plane and vertical movement, which improves the applicability and flexibility of the welding equipment.

[0019] 4. The present invention has a linkage mechanism with the adjustment component through the mobile unit. When one of the electric push rods is working, the angle of the telescopic frame is offset, and a force is applied to one side of the adjustment plate, so that the adjustment cylinder is translated. The present invention can prevent the adjustment cylinder from shaking due to the lack of a limit mechanism when it is translated by setting a mobile unit. The present invention is conducive to improving the stability of the adjustment cylinder.

[0020] 5. The present invention sets a rotating module, and the rotating module and the moving unit have a linkage mechanism. When the adjusting cylinder translates, the arc-shaped telescopic rod is squeezed, so that the arc-shaped telescopic rod applies torque to the adjusting cylinder, causing the adjusting cylinder to rotate, thereby adjusting the positions of two groups of welding guns arranged in a linear array on a plane, so that the welding gun can achieve a welding effect in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the large structure of prescription A; Figure 3 It is a schematic diagram of a three-dimensional partial structure of the adjustment assembly of the present invention, to illustrate the top structure of the moving block; Figure 4 For the present invention Figure 3 The enlarged structural diagram of Wow B in the figure; Figure 5 It is a three-dimensional partial enlarged structural schematic diagram of the adjustment component of the present invention, so as to show the three-dimensional structure of the adjustment plate; Figure 6 It is a three-dimensional partial enlarged structural schematic diagram of the welding mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the adjustment module of the present invention; Figure 8 It is a schematic diagram of a three-dimensional partial structure of the adjustment assembly of the present invention, to illustrate the bottom structure of the moving block; Fig. 9 It is a schematic diagram of a three-dimensional partial structure of the adjustment component of the present invention, to illustrate the bottom structure of the adjustment plate; Fig.10 It is a schematic diagram of the three-dimensional structure of the mobile unit of the present invention; Fig.11 It is a three-dimensional enlarged structural schematic diagram of the rotating module of the present invention; Fig.12 The figure is a schematic diagram of the arrangement structure of the welding gun of the present invention, to illustrate the welding of the intersection of the steel bars of the two side plates; Fig.13 This is a schematic diagram of the welding gun linear arrangement in use state of the present invention; Fig.14 It is a schematic diagram of the linear arrangement of the welding guns of the present invention in the state of use, to illustrate the welding of steel bars at the corners of the box beam.

[0022] Explanation of the reference numerals in the figure: 1, bottom plate; 101, guide rail; 2, moving block; 201, driving module; 3, welding mechanism; 301, adjusting cylinder; 302, first support plate; 303, transmission plate; 304, welding gun; 305, screw rod; 306, transmission wheel; 307, first motor; 308, pulley; 309, transmission belt; 4, adjusting assembly; 401, telescopic frame; 402, electric push rod; 403, limit clamp; 404, adjustment plate; 404a, slide; 405, limit block; 406, first spring; 40 7. First slider; 5. Adjustment module; 501. First hinge block; 502. Second support plate; 503. Second hinge block; 504. Spiral bar block; 505. Movable rod; 506. Roller; 507. First air pump; 6. Moving unit; 601. Limiting cylinder; 601a. ​​Limiting bar; 602. I-shaped cylinder; 603. Sliding cylinder; 604. Strip groove; 605. Sliding block; 7. Rotation module; 701. Transmission block; 702. Mounting block; 703. Arc shell; 704. Arc plate; 705. Second air pump. DETAILED DESCRIPTION

[0023] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Fig.10 As shown, the present invention relates to a mobile welding device for a highway prefabricated box girder steel frame, comprising two bottom plates 1, the tops of the two bottom plates 1 are fixedly connected to two guide rails 101 by first bolts, the tops of the two guide rails 101 are slidably connected to a moving block 2, and a driving module 201 is arranged at the bottom of the moving block 2. It is worth noting that the driving module 201 is composed of components such as a motor, a pulley and a chain. When in use, the pulley is driven by the motor to drive the moving block 2 to slide on the tops of the two guide rails 101, and a welding mechanism 3 is arranged inside the moving block 2; The welding mechanism 3 includes an adjusting cylinder 301 and an adjusting assembly 4; the adjusting cylinder 301 is movably sleeved on the inner wall of the moving block 2, and the adjusting assembly 4 is arranged on the top of the moving block 2; The end surface of the adjusting cylinder 301 is symmetrically structured and connected to two first support plates 302 through a first plug rod. Two adjustment modules 5 are movably provided at the end of each first support plate 302 through a first hinge frame. The ends of the two adjustment modules 5 are movably connected to a transmission plate 303 through a second hinge frame. A plurality of welding guns 304 are arranged in a linear array on one side of the two adjustment modules 5. It is worth noting that the welding gun 304 is a gas welding gun of the prior art, which has the effects of being flexible, convenient and fast to use, and can be used for welding steel skeletons in a limited space. The top of the transmission plate 303 is symmetrically structured and fixedly connected to two screw rods 305, and the screw rods 305 pass through the adjusting cylinder 301. The tops of the two screw rods 305 are connected by The first thread is movably connected with a transmission wheel 306, and the transmission wheel 306 is rotatably connected to the upper surface of the adjustment cylinder 301. The first bracket on the top of the adjustment cylinder 301 is fixedly sleeved with a first motor 307. The output end of the first motor 307 is fixedly connected with a pulley 308. The two transmission wheels 306 are movably connected to the side surfaces of the pulley 308 through a transmission belt 309. The present invention provides a welding mechanism 3 to enable a plurality of welding guns 304 to be used in two ways. In particular, the support plate is propped open by the screw rod 305, so that the two groups of linearly arranged welding guns 304 are inclined to adapt to the shape of the box beam steel frame, thereby improving the welding efficiency of the steel bar intersection, and the screw rod 305 is moved upward to enable the two groups of linearly arranged welding guns 304 to be used in two ways. The linearly arranged welding guns 304 are arranged in a linear array on the same horizontal plane and in a straight line, and the multi-point welding effect at the same position is achieved by adjusting the component 4, that is, the design is made on the basis of the welding mechanism 3, and the welding angles of the two groups of linearly arranged welding guns 304 can be adjusted respectively to improve the adaptability of the device, and a variety of designs are made on the basis of the adjusting component 4, so that the welding guns 304 are limited when they are translated to avoid shaking and affecting the welding effect. Another way is to apply torque to the adjusting cylinder 301 when the adjusting cylinder 301 is translated to make it rotate, thereby achieving a multi-angle welding effect. When in use, the moving block 2 is first driven to slide on the guide rail 101 by the driving module 201, When welding the intersection of steel bars in the same axial direction, firstly, the first motor 307 is operated through the external circuit mechanism, and the first motor 307 drives the pulley 308 to rotate and transmits the transmission through the transmission belt 309, so that the two transmission wheels 306 rotate synchronously in the same direction, and because the transmission wheel 306 is threadedly connected with the screw rod 305, the two screw rods 305 apply thrust to the transmission plate 303, and the first support plate 302 and the second support plate 502 move axially, so that the first support plate 302, the second support plate 502 and the transmission plate 303 are stretched apart, so that the second support plate 502 is adapted to the inner side of the box beam steel frame, and then the control system is used to operate the welding gun 304 to weld the intersection of the steel bars.

[0024] In an embodiment of the present invention, Figure 6 and Figure 7As shown, each adjustment module 5 is composed of a first hinge block 501, a second support plate 502 and a second hinge block 503; The first hinge block 501 is movably connected to the end of the first support plate 302 through a first hinge frame, the second support plate 502 is movably connected to one side of the first hinge block 501, and a first sealed cavity is formed between the second support plate 502 and the first hinge block 501 through a sealing tube. A plurality of welding guns 304 are fixedly sleeved on one side of the second support plate 502 in a linear array, and the second support plate 502 is movably connected to the end of the transmission plate 303 through a second hinge frame. A plurality of spiral bars 504 are fixedly connected in a circular array in the hole on the second support plate 502, and a sliding track is formed between two adjacent spiral bars 504. A movable rod 505 is fixedly connected to one end of the second support plate 502 close to the second hinge block 503, and a plurality of rollers 506 are fixedly connected to the surface of the end of the movable rod 505 in a circular array through a first latch, and the rollers 506 are in rolling contact with the inside of the sliding track. A first air pump 507 is fixedly connected to one side of the support plate 302 through a second bracket, and an output end of the first air pump 507 is fixedly connected to the first sealed cavity through a first gas transmission pipeline. The present invention fills gas into the first sealed cavity through a pneumatic component, so that the second support plate 502 moves to one side, and the roller 506 rolls in the sliding track to rotate the second support plate 502, thereby adjusting the welding angle of the welding gun 304 to achieve a multi-angle welding effect. When adjusting the welding angle of the welding gun 304, the first air pump 507 is first operated through an external control system, and gas fills the first sealed cavity, applying a thrust to the second support plate 502, so that the movable rod 505 moves into the hole on the second hinge block 503, and the roller 506 rolls in the spiral track to rotate the second support plate 502, thereby achieving multi-angle welding processing.

[0025] In an embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the adjustment component 4 includes two telescopic frames 401, and the two telescopic frames 401 are symmetrically connected to the top of the moving block 2 through the second pin. The inner walls on both sides of the moving block 2 are symmetrically connected to two electric push rods 402 through the third pin, and the electric push rods 402 are movably connected to the telescopic frames 401 through the first connecting frame. The two tops are symmetrically connected to four limit clamps 403 through the third pin, and the adjacent limit clamps 403 are arranged in a staggered manner. The four limit clamps 403 are movably connected to the adjustment plate 404, and the top of the adjustment cylinder 301 is rotatably connected to the inside of the adjustment plate 404. It is worth noting that the top of the adjustment cylinder 301 can only rotate inside the adjustment plate 404, and cannot slide up and down inside the adjustment plate 404, in order to prevent the adjustment cylinder 301 from losing its supporting function and causing it to fall from the device.

[0026] Two limiting blocks 405 are fixedly connected inside each of the two relative limiting clamping plates 403, and a plurality of first springs 406 are fixedly connected to one side of each limiting block 405. Each first spring 406 is fixedly connected to a first slider 407 away from the limiting block 405. A moving unit 6 is arranged inside the bottom plate 1, and the moving unit 6 is sleeved on the surface of the adjusting cylinder 301. The present invention sets an adjusting component 4, and when the two electric push rods 402 are working, the two telescopic frames 401 are rotated at the same time to adjust the height of the adjusting plate 404, thereby realizing the height adjustment of the adjusting cylinder 301. At the same time, when one of the electric push rods 402 is working, the telescopic frame 401 is rotated at an angle to apply a force to one side of the adjusting plate 404, so that the adjusting cylinder 301 is translated. The present invention has a mechanism with two degrees of freedom in the plane and vertical movement, thereby improving the applicability and flexibility of the welding equipment. The top of the adjustment plate 404 is symmetrically structured with four slide grooves 404a, and the slide grooves 404a correspond to the positions of the limit clamps 403, the limit blocks 405 are slidably connected to the inside of the slide grooves 404a, and the first slider 407 is slidably connected to the inside of the slide grooves 404a. It is worth noting that the electric push rod 402 is operated to make the telescopic frame 401 rotate at an angle, so that the height of the adjustment plate 404 can be adjusted, thereby achieving the up and down adjustment effect of the adjustment cylinder 301, which can adapt to the welding part of the box girder steel frame, which is beneficial to improve the adaptability of the device. During the welding process, the electric push rod 402 is operated to drive the two telescopic frames 401 to move axially, and the limit blocks 405 and the first slider 407 slide in the slide grooves 404a, and the elastic force applied by the first spring 406, so as to adjust the height position of the adjustment plate 404, and then adjust the height position of the adjustment cylinder 301, to prevent the welding gun 304 from colliding with the box girder steel frame during arc movement, thereby affecting the service life of the device.

[0027] In an embodiment of the present invention, Figure 3 , Figure 8 and Fig.10 As shown, the moving unit 6 includes a limiting cylinder 601, which is movably sleeved on the side surface of the adjusting cylinder 301, and the limiting cylinder 601 is sleeved inside the moving block 2. The side surface of the limiting cylinder 601 is movably sleeved with the I-shaped cylinder 602. It is worth noting that the limiting cylinder 601 is rotatably connected inside the I-shaped cylinder 602 and cannot slide inside the I-shaped cylinder 602. The limiting cylinder 601 is limited to prevent the limiting cylinder 601 from losing support and affecting the translation function of the adjusting cylinder 301.

[0028] A sliding cylinder 603 is fixedly sleeved inside the moving block 2, and the I-shaped cylinder 602 is slidably connected inside the sliding cylinder 603. The two ends of the sliding cylinder 603 are symmetrically structured and have a plurality of strip grooves 604. The inner walls of the I-shaped cylinder 602 on both sides are symmetrically structured and fixedly connected with a plurality of sliding blocks 605, and the sliding blocks 605 are slidably connected inside the strip grooves 604. A rotating module 7 is arranged on the inner wall of the moving block 2. It is worth noting that the moving unit 6 and the adjustment component 4 have a linkage mechanism. When one of the electric push rods 402 is working, the telescopic frame 401 is offset in angle, and a force is applied to one side of the adjustment plate 404, so that the adjustment cylinder 301 is translated. The present invention can prevent the adjustment cylinder 301 from shaking due to the lack of a limiting mechanism when the adjustment cylinder 301 is translated by setting the moving unit 6. The present invention is conducive to improving the stability of the adjustment cylinder 301. The inner wall of the limiting cylinder 601 is fixedly connected with a plurality of limiting strips 601 a in a circular array, and the limiting strips 601 a are slidably connected in the upper groove of the adjusting cylinder 301 .

[0029] In an embodiment of the present invention, Figure 3 and Fig.11As shown, the rotating module 7 includes two transmission blocks 701, which are arranged in a ring array on the side surface of the adjusting cylinder 301, and the transmission blocks 701 are slidably connected in the upper groove of the adjusting cylinder 301. It is worth noting that a convex block is arranged on the end surface of the transmission block 701, and is adapted to the upper groove of the adjusting cylinder 301 to prevent the transmission block 701 from falling off the surface of the adjusting cylinder 301 when the adjusting cylinder 301 rotates, affecting subsequent use. The inner wall of the moving block 2 is fixedly connected with two mounting blocks 702 in a ring array, and the interiors of the two mounting blocks 702 are movable by a fourth latch. Two arc-shaped shells 703 are connected, and an arc-shaped plate 704 is slidably connected inside each arc-shaped shell 703, and the arc-shaped plate 704 is movably connected to the transmission block 701 through a fifth latch, and a second sealed cavity is formed between the end of the arc-shaped plate 704 and the arc-shaped shell 703. Two second air pumps 705 are fixedly connected to the inner walls on both sides of the moving block 2, and the second air pump 705 is fixedly connected to the second sealed cavity through a second air pipeline. The present invention sets a rotating module 7, and the rotating module 7 and the moving unit 6 have a linkage mechanism. When the adjusting cylinder 301 translates, the arc-shaped telescopic rod The arc-shaped telescopic rod is squeezed, so that the torque is applied to the adjusting cylinder 301, so that the adjusting cylinder 301 rotates, and then the positions of the two groups of welding guns 304 arranged in a linear array on the plane are adjusted, so that the welding guns 304 can achieve the welding effect in a limited space. When the two groups of welding guns 304 arranged in a linear array weld the inner wall of one side of the box beam steel frame, one of the electric push rods 402 works to make the telescopic frame 401 move axially. Since the telescopic frame 401 has the stretching ability, one of the limit blocks 405 applies a thrust to the adjusting plate 404. , so that the adjustment plate 404 is displaced, and then the adjustment cylinder 301 is translated, thereby improving the flexibility of the welding gun 304. When the adjustment cylinder 301 is translated, the arc-shaped shell 703 and the arc-shaped plate 704 are subjected to the extrusion force, and the component is arc-shaped, so that the arc-shaped plate 704 applies torque to the adjustment cylinder 301, and through the external control system, the second air pump 705 is operated, and the gas fills the second sealed cavity, so that the arc-shaped plate 704 extends outward, and the thrust generated is converted into torque, so that the adjustment cylinder 301 rotates, thereby realizing local linear arrangement welding processing.

[0030] Working principle: This embodiment provides a mobile welding device for the steel bar skeleton of a highway prefabricated box girder. When in use, the driving module 201 is used to drive the moving block 2 to slide on the guide rail 101. When welding the intersection of the steel bars in the same axial direction, the first motor 307 is first operated through the external circuit mechanism. The first motor 307 drives the pulley 308 to rotate and transmits the transmission through the transmission belt 309, so that the two transmission wheels 306 rotate synchronously in the same direction. Since the transmission wheel 306 is threadedly connected to the screw rod 305, the two screw rods 305 apply thrust to the transmission plate 303, and the first support plate 302 and the second support plate 502 moves axially to open the first support plate 302, the second support plate 502 and the transmission plate 303, so that the second support plate 502 is adapted to the inner side of the box beam steel frame, and then the control system is used to make the welding gun 304 work to weld the intersection of the steel bars. When the two sets of welding guns 304 are arranged linearly, the first motor 307 works, the two transmission wheels 306 rotate synchronously in the same direction, the two screw rods 305 apply tension to the transmission plate 303, and the first support plate 302 and the second support plate 502 move axially to make the first support plate 302 parallel to the second support plate 502, as shown in FIG. Fig.13 and Fig.14As shown, the intersection of the longitudinal steel bars and the stirrups of the two side plates is welded. When the two sets of welding guns 304 arranged in a linear array weld the inner wall of one side of the box beam steel frame, one of the electric push rods 402 works to make the telescopic frame 401 move axially. Since the telescopic frame 401 has the stretching ability, one of the limit blocks 405 applies a thrust to the adjusting plate 404, so that the adjusting plate 404 is displaced, thereby achieving the translation of the adjusting cylinder 301, thereby improving the flexibility of the welding gun 304. When the adjusting cylinder 301 translates, the arc-shaped shell 703 and the arc-shaped plate 704 are subjected to the extrusion force, and the component is arc-shaped, so that the arc-shaped plate 704 applies a torque to the adjusting cylinder 301, and through the external control system, the second air pump 705 works, and the gas fills the second sealed cavity, so that the arc-shaped plate 704 extends outward, and the thrust generated is converted into a torque, so that the adjusting cylinder 301 is translated. Rotate to achieve local linear arrangement welding processing. During the welding process, the electric push rod 402 works to drive the two telescopic frames 401 to move axially, and the limit block 405 and the first slider 407 slide in the slide groove 404a, and the elastic force applied by the first spring 406, so as to adjust the height position of the adjustment plate 404, and then adjust the height position of the adjustment cylinder 301 to prevent the welding gun 304 from colliding with the box beam steel frame when making an arc movement, thereby affecting the service life of the device. When adjusting the welding angle of the welding gun 304, firstly, the first air pump 507 is operated through the external control system, and the gas fills the first sealed cavity, and applies a thrust to the second support plate 502, so that the movable rod 505 moves into the hole on the second hinge block 503, and the roller 506 rolls in the spiral track to realize the rotation of the second support plate 502, and then the steel bar welding point at the arc corner of the box beam is welded.

[0031] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A mobile welding device for a highway prefabricated box girder steel frame, characterized in that: It comprises two bottom plates (1), the tops of the two bottom plates (1) are fixedly connected to two guide rails (101) via first bolts, the tops of the two guide rails (101) are slidably connected to a moving block (2), the bottoms of the moving blocks (2) are provided with a driving module (201), and the insides of the moving blocks (2) are provided with a welding mechanism (3); The welding mechanism (3) comprises an adjusting cylinder (301) and an adjusting assembly (4); the adjusting cylinder (301) is movably sleeved on the inner wall of the moving block (2), and the adjusting assembly (4) is arranged on the top of the moving block (2); The end surface of the adjustment cylinder (301) is symmetrically structured and is movably connected to two first support plates (302) via a first insertion rod; the end of each of the first support plates (302) is movably provided with two adjustment modules (5) via a first hinge frame; the ends of the two adjustment modules (5) are movably connected to a transmission plate (303) via a second hinge frame; a plurality of welding guns (304) are arranged in a linear array on one side of the two adjustment modules (5); the top of the transmission plate (303) is symmetrically structured and fixedly connected to two screw rods (305); The screw rod (305) passes through the adjustment tube (301); the tops of the two screw rods (305) are movably connected to a transmission wheel (306) via a first thread; the transmission wheel (306) is rotatably connected to the upper surface of the adjustment tube (301); a first motor (307) is fixedly sleeved on a first bracket at the top of the adjustment tube (301); a belt pulley (308) is fixedly connected to the output end of the first motor (307); and the two transmission wheels (306) are movably connected to the side surfaces of the belt pulley (308) via a transmission belt (309).

2. The mobile welding device for the prefabricated highway box beam reinforcement skeleton according to claim 1 is characterized in that: Each of the adjustment modules (5) is composed of a first hinge block (501), a second support plate (502) and a second hinge block (503); The first hinge block (501) is movably connected to the end of the first support plate (302) via a first hinge frame, the second support plate (502) is movably connected to one side of the first hinge block (501), a first sealed cavity is formed between the second support plate (502) and the first hinge block (501) via a sealing tube, a plurality of welding guns (304) are fixedly sleeved on one side of the second support plate (502) in a linear array, the second support plate (502) is movably connected to the end of the transmission plate (303) via a second hinge frame, a plurality of screws are fixedly connected in a circular array in the upper hole of the second support plate (502), and the plurality of screws are fixedly connected in a circular array in the upper hole of the second support plate (502). The spiral bar block (504) is provided with a sliding track between two adjacent spiral bar blocks (504); a movable rod (505) is fixedly connected to one end of the second support plate (502) close to the second hinge block (503); a plurality of rollers (506) are fixedly connected to the end surface of the movable rod (505) in an annular array through a first latch, and the rollers (506) are in rolling contact with the inside of the sliding track; a first air pump (507) is fixedly connected to one side of the first support plate (302) through a second bracket, and an output end of the first air pump (507) is fixedly connected to the first sealed cavity through a first air delivery pipeline.

3. The mobile welding device for the prefabricated highway box beam reinforcement skeleton according to claim 2 is characterized in that: The adjustment assembly (4) comprises two telescopic frames (401), the two telescopic frames (401) are symmetrically connected to the top of the moving block (2) through a second latch, the inner walls on both sides of the moving block (2) are symmetrically connected to two electric push rods (402) through a third latch, and the electric push rods (402) are movably connected to the telescopic frames (401) through a first connecting frame, the two tops are symmetrically connected to four limit clamps (403) through the third latch, and adjacent limit clamps (403) are arranged in a staggered manner, the four limit clamps (403) are movably connected to an adjustment plate (404) inside, and the top of the adjustment cylinder (301) is rotatably connected to the inside of the adjustment plate (404).

4. The mobile welding device for the prefabricated highway box beam reinforcement skeleton according to claim 3 is characterized in that: Two limiting blocks (405) are fixedly connected inside each of the two relatively limiting clamping plates (403); a plurality of first springs (406) are fixedly connected to one side of each limiting block (405); each first spring (406) is fixedly connected to a first sliding block (407) away from the limiting block (405); a moving unit (6) is arranged inside the bottom plate (1), and the moving unit (6) is sleeved on the surface of the adjustment cylinder (301).

5. The mobile welding device for the steel bar skeleton of a highway prefabricated box girder according to claim 4 is characterized in that: The top of the adjustment plate (404) is symmetrically structured and has four slide grooves (404a), and the slide grooves (404a) correspond to the positions of the limiting clamping plate (403), the limiting block (405) is slidably connected inside the slide grooves (404a), and the first sliding block (407) is slidably connected inside the slide grooves (404a).

6. The mobile welding device for the prefabricated highway box beam reinforcement skeleton according to claim 5 is characterized in that: The moving unit (6) comprises a limiting cylinder (601), the limiting cylinder (601) being movably sleeved on the side surface of the adjusting cylinder (301), and the limiting cylinder (601) being sleeved inside the moving block (2), and the side surface of the limiting cylinder (601) being movably sleeved with an I-shaped cylinder (602).

7. The mobile welding device for the steel bar skeleton of a highway prefabricated box girder according to claim 6 is characterized in that: A sliding cylinder (603) is fixedly sleeved inside the moving block (2), and the profile cylinder (602) is slidably connected inside the sliding cylinder (603). The two ends of the sliding cylinder (603) are symmetrically provided with a plurality of strip grooves (604). The inner walls of both sides of the profile cylinder (602) are symmetrically fixedly connected with a plurality of sliding blocks (605), and the sliding blocks (605) are slidably connected inside the strip grooves (604). A rotating module (7) is arranged on the inner wall of the moving block (2).

8. The mobile welding device for the reinforcement skeleton of a highway prefabricated box girder according to claim 7 is characterized in that: The inner wall of the limiting cylinder (601) is fixedly connected to a plurality of limiting strips (601a) in a ring-shaped array, and the limiting strips (601a) are slidably connected in the upper groove of the adjustment cylinder (301).

9. The mobile welding device for the prefabricated highway box beam reinforcement skeleton according to claim 8, characterized in that: The rotating module (7) comprises two transmission blocks (701), which are arranged in a ring array on the side surface of the adjusting cylinder (301), and the transmission blocks (701) are slidably connected in the upper groove of the adjusting cylinder (301). The inner wall of the moving block (2) is fixedly connected to two mounting blocks (702) in a ring array, and the two mounting blocks (702) are movably connected to two arc-shaped shells (703) via fourth latches, and each arc-shaped shell (703) is slidably connected to the inside thereof.

10. The mobile welding device for the prefabricated highway box beam reinforcement skeleton according to claim 9, characterized in that: The arc plate (704) and the transmission block (701) are movably connected via a fifth latch; a second sealed cavity is formed between the end of the arc plate (704) and the arc housing (703); two second air pumps (705) are fixedly connected to the inner walls on both sides of the moving block (2); and the second air pumps (705) are fixedly connected to the second sealed cavity via a second air delivery pipeline.

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