Building steel truss welding device

Abstract

The invention provides a building steel truss welding device which comprises a bottom plate, a positioning block is slidably arranged on the bottom plate in a left-right moving mode, supports are symmetrically arranged on the bottom plate in a front-back mode, a supporting plate is horizontally installed on the two supports, and a descending and abutting piece is slidably arranged below the supporting plate in an elastic and vertical mode. A first positioning strip and a second positioning strip are arranged at the bottoms of the upper side and the lower side of the descending abutting piece correspondingly, welding guns are slidably arranged on the upper side and the lower side of the descending abutting piece in a left-right moving mode, and a longitudinal moving piece driven by a servo electric cylinder is slidably arranged on the support on the front side in a front-back moving mode. The device has the advantages that the descending abutting part can automatically descend to the bottom to abut against the chord rib externally, the positioning strip abuts against the steel bar upwards, the inner abutting assembly abuts against the chord rib internally, the two welding guns move at the same time to complete welding of the two sides of the chord rib, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building steel truss, and particularly relates to a building steel truss welding device. BACKGROUND

[0002] The steel truss is a support structure connected by welding, which comprises chord, web steel bar and support steel bar. The steel truss has considerable strength and light structure weight, and can be used to bear tension or pressure, so it is widely used in the construction industry, and can not only play a supporting role, but also be used to beautify the outline of the building.

[0003] At present, the chord is generally welded to the web steel bar and the support steel bar by manual work. In the welding process, the chord, the web steel bar and the support steel bar of the steel truss need to be positioned manually. Since the chord is long and curved, the chord is easy to separate from the steel bar, and the two are not close together. Therefore, when welding, the worker supports the steel bar, and at the same time, the upper chord is pressed from the outside so that the chord is close to the upper steel bar. Then, the lower chord is pressed from the inside so that the chord is close to the lower steel bar. Then, the chord and the upper steel bar and the lower steel bar are welded. It needs multiple people to complete the work, which is labor-intensive and low in efficiency. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a building steel truss welding device, which can automatically lower the abutting piece to abut the chord, position the abutting piece to abut the steel bar, and internally abut the chord by the internal abutting assembly. After the two welding guns weld one side of the chord, the two welding guns are shifted to the other side to complete the welding of the other side of the chord, thereby improving the efficiency.

[0005] The present application provides a building steel truss welding device, which comprises a bottom plate 1, a positioning block 2 is movably arranged on the bottom plate 1, supports are symmetrically arranged on the bottom plate 1, a support plate 3 is horizontally arranged on the two supports, an abutting piece 5 is elastically and vertically arranged below the support plate 3, a first positioning strip 6 and a second positioning strip 7 are arranged on the bottom of the abutting piece 5, welding guns 8 are movably arranged on the upper and lower sides of the abutting piece 5, a longitudinal moving piece 11 driven by a servo cylinder 10 is movably arranged on the front support, and an elevating assembly 12, an internal abutting assembly 13 and a shifting assembly 14 are arranged on the abutting piece 5. When the longitudinal moving piece 11 moves backward, the abutting piece 5 is lowered to abut the chord by the elevating assembly 12, the first positioning strip 6 and the second positioning strip 7 abut the steel bar, the internal abutting assembly 13 abuts the chord, the two welding guns 8 weld one side of the chord, and then the welding guns 8 are shifted to the other side by the shifting assembly 14, and the other side of the chord is welded by the welding guns 8.

[0006] Further, the left and right sides of the lowering component 5 are vertically and symmetrically provided with first guide rods 4, and the support plate 3 is provided with guide sleeves for slidingly accommodating the first guide rods 4.

[0007] Further, the longitudinal moving component 11 is composed of a connecting portion 11.1 in the middle, an upper slide rod 11.2 and a first inclined block 11.4 in the lower side, the end of the slide rod 11.2 is provided with a first slide block 11.3, the first inclined block 11.4 is longitudinally provided with a rack 11.5, and the connecting portion 11.1 is longitudinally provided with a second guide rod 11.6 for slidingly accommodating the bracket.

[0008] Further, the lifting assembly 12 includes a sliding block 12.1 for slidingly accommodating the slide rod 11.2 and the first slide block 11.3, the slide rod 11.2 is provided with a first elastic member for connecting the sliding block 12.1 and the connecting portion 11.1, the lowering component 5 is transversely provided with a fixed shaft 12.3, a hinge rod 12.2 is hinged between the sliding block 12.1 and the fixed shaft 12.3, and the bracket is provided with a stop block 12.4 for stopping the sliding block 12.1.

[0009] Further, the inner resisting assembly 13 includes stable blocks 13.1 symmetrically provided on the rear end of the lowering component 5, the stable blocks 13.1 are vertically provided with second inclined blocks 13.2 for slidingly accommodating, a fixed rod is connected between the two second inclined blocks 13.2 and can be pressed by the first inclined block 11.4, and the bottom of the stable blocks 13.1 is elastically and longitudinally provided with inner resisting blocks 13.3 for cooperating with the second inclined blocks 13.2.

[0010] Further, the shifting assembly 14 includes a rotating shaft 14.3 rotatingly provided on the lowering component 5 and a first spur gear 14.1, a torsion spring is provided between the rotating shaft 14.3 and the lowering component 5, the rack 11.5 can engage with the first spur gear 14.1, the rotating shaft 14.3 is sequentially keyed with an upper shifting piece 14.4, a second spur gear 14.2 and a lower shifting piece 14.5 from top to bottom, and the second spur gear 14.2 engages with the first spur gear 14.1.

[0011] Further, the upper shifting piece 14.4 and the lower shifting piece 14.5 are both provided with runway-shaped guide grooves for shifting the welding gun 8.

[0012] Further, the rotating shaft 14.3 and the axes of the upper and lower welding guns 8 are in the same plane.

[0013] Further, the lowering and abutting part 5 is composed of the upper platform 5.2 and the lower platform 5.3 on the upper and lower sides connected by the outer abutting parts 5.1 on the left and right sides, and the upper transverse groove 5.4 and the lower transverse groove 5.5 are horizontally arranged at the upper platform 5.2 and the lower platform 5.3 respectively.

[0014] Further, the guide rails 15 are horizontally arranged on the upper platform 5.2 and the lower platform 5.3, the sleeve 9 of the welding gun 8 is movably arranged in the upper transverse groove 5.4 or the lower transverse groove 5.5, and the side wall of the sleeve 9 is provided with the second sliding block which is slidably arranged in the guide rail 15.

[0015] The advantages of the present application are as follows: the lowering and abutting part is automatically lowered to abut the stringer, the positioning strip abuts the steel bar, the inner abutting assembly abuts the stringer, and the two welding guns are simultaneously shifted to complete the welding on both sides of the stringer, thereby improving the efficiency; the piston rod end of the servo cylinder is connected to the connecting part, the sliding rod and the first sliding block are elastically and slidably arranged with the sliding block of the lifting assembly, the inclined surface of the first inclined block presses the fixed rod of the inner abutting assembly, the lower end surface of the first inclined block keeps the fixed rod stationary, the rack drives the first spur gear of the shifting assembly to rotate, and the second guide rod is movably arranged in the front side support; the sliding rod and the first sliding block push the sliding block to move backward through the first elastic member, the sliding block drives the fixed shaft to lower the lowering and abutting part to the bottom through the hinge member, the first positioning strip and the second positioning strip of the lowering and abutting part abut the steel bar, the lowering and abutting part abuts the stringer, the sliding block is kept stationary after being blocked by the stop block, and the longitudinal moving member compresses the first elastic member and continues to move backward; the inclined surface of the first inclined block presses the fixed rod and the second inclined block thereon, the second inclined block drives the inner abutting block to move forward, the inner abutting block abuts the stringer, the fixed rod abuts the lower end surface of the first inclined block, the fixed rod, the second inclined block and the inner abutting block are kept stationary, the welding on both sides of the stringer is completed, the first inclined block is separated from the fixed rod, and the inner abutting block is moved backward and reset under the action of the second elastic member; the backward moving rack is engaged with the first spur gear, the first spur gear drives the second spur gear to rotate, the second spur gear drives the rotating shaft to rotate, the rotating shaft drives the up-down shifting member to rotate, the up-down shifting member drives the upper and lower welding guns to shift to the other side, the sleeve is slidably arranged in the guide groove of the up-down shifting member, the welding gun is movably arranged in the guide rail through the second sliding block, and the welding gun is shifted to the other side along the guide rail when the sleeve is shifted by the rotating shifting member. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The three-dimensional view of the present application for positioning the steel bar and the stringer; Figure 2 The schematic view of part of the structure of the present application; Figure 3 The partial front view of the present application; Figure 4 The partial bottom view of the present application; Figure 5Right view of the present application when the reinforcing bar and the chord bar are pushed under the lowering and resisting member; Figure 6 Right view of the present application when the lowering and resisting member resists the chord bar outside and the block inside; Figure 7 Right view of the present application when the longitudinal moving member continues to move backward and the two welding guns are displaced to the other side; Figure 8 Front view of the present application when the longitudinal moving member continues to move backward and the two welding guns are displaced to the other side; Figure 9 Enlarged view of A part of Figure 1 ; Figure 10 Enlarged view of B part of Figure 2 ; Figure 11 Enlarged view of C part of Figure 6 ; Figure 12 Structural schematic view of the longitudinal moving member of the present application; Figure 13 Structural schematic view of the lowering and resisting member of the present application. DETAILED DESCRIPTION

[0017] The embodiments of the present application will be described in detail below with reference to the drawings.

[0018] Referring to Figures 1 to 13The application provides a building steel frame welding device, which comprises a bottom plate 1, positioning blocks 2 movably arranged on the bottom plate 1, the positioning blocks are distributed on the left and right sides, the two positioning blocks are connected together through a long strip, three steel bars are arranged on the arc-shaped grooves on the upper end of the positioning blocks, the chord is attached to the upper end surface of the bottom plate and the side wall of the positioning block, the positioning block limits the left and right sides of the steel bar and the chord, supports are symmetrically arranged on the bottom plate 1, support plates 3 are horizontally arranged on the two supports, elastic and vertical drop pieces 5 are movably arranged below the support plates 3, first guide rods 4 are vertically and symmetrically arranged on the left and right sides of the drop pieces 5, guide sleeves are arranged on the support plates 3 and used for sliding the first guide rods 4, first positioning strips 6 and second positioning strips 7 are arranged on the bottom of the upper side and the bottom of the lower side of the drop pieces 5, welding guns 8 are movably arranged on the upper side and the lower side of the drop pieces 5, a longitudinal moving piece 11 driven by a servo cylinder 10 is movably arranged on the front side support, lifting assemblies 12, inner resistance assemblies 13 and displacement assemblies 14 are arranged on the drop pieces 5, when the longitudinal moving piece 11 moves backward, the longitudinal moving piece 11 drives the drop piece 5 to move downward to the outside of the chord through the lifting assembly 12, the first positioning strip 6 and the second positioning strip 7 abut against the steel bar, the longitudinal moving piece 11 drives the inner resistance assembly 13 to abut against the chord, the two welding guns 8 weld one side of the chord, then the longitudinal moving piece 11 drives the welding guns 8 to move to the other side through the displacement assembly 14, and the welding guns 8 weld the other side of the chord. Workers arrange the three steel bars on the positioning blocks, the chord is attached to the upper end surface of the bottom plate and the side wall of the positioning block, the positioning block limits the left and right sides of the steel bar and the chord, then the positioning blocks are pushed, so that the arranged steel bar and chord are pushed to the lower side of the drop piece and are aligned, the size can be marked on the bottom plate, so that the pushing distance is adjusted, the longitudinal moving piece moves backward under the drive of the servo cylinder, the longitudinal moving piece drives the drop piece to move downward to the bottom through the lifting assembly, the drop piece abuts against the chord, the first positioning strip and the second positioning strip abut against the steel bar when the drop piece moves downward, the longitudinal moving piece drives the inner resistance assembly to abut against the chord, so that the steel bar and the chord are positioned, the two welding guns weld one side of the chord (the chord is connected with the right side of the upper steel bar and the lower steel bar respectively), then the longitudinal moving piece moves forward to reset under the drive of the servo cylinder, the longitudinal moving piece drives the welding guns to move right to reset through the displacement assembly, the longitudinal moving piece drives the inner resistance assembly to reset to release the chord, the longitudinal moving assembly drives the drop piece to move upward to reset through the lifting assembly, workers push the positioning blocks to weld the next chord, and the above steps are repeated to complete the welding of one side of the chord, the steel frame can be changed to a direction to weld the chord on the other side, or the above components can be symmetrically arranged on the support plate and the rear support to simultaneously complete the welding of the chord on the other side (the two drop pieces can be connected together, the positions of the moving pieces on the two displacement assemblies are adjusted, and the first positioning strip on the rear side is removed to avoid conflict).

[0019] Reference Figure 1 , Figure 12The vertical moving part 11 is composed of the connecting part 11.1 in the middle, the upper slide rod 11.2 and the first inclined block 11.4 in the lower side, the end of the slide rod 11.2 is provided with the first slide block 11.3, the first inclined block 11.4 is provided with the rack 11.5 longitudinally, the connecting part 11.1 is provided with the second guide rod 11.6 which is slidably matched with the bracket. The end of the piston rod of the servo cylinder is connected to the connecting part, the slide rod and the first slide block are slidably matched with the sliding block of the lifting assembly, the inclined surface of the first inclined block presses the fixed rod of the inner pressing assembly, the lower end surface of the first inclined block keeps the fixed rod unmoved, the rack can drive the first spur gear of the moving assembly to rotate, and the second guide rod is slidably matched with the front bracket.

[0020] The lifting assembly 12 comprises the sliding block 12.1 which is slidably matched with the slide rod 11.2 and the first slide block 11.3, the slide rod 11.2 is provided with the first elastic member which connects the sliding block 12.1 and the connecting part 11.1, the lowering pressing assembly 5 is provided with the fixed shaft 12.3 which is horizontally installed, the sliding block 12.1 and the fixed shaft 12.3 are hingedly connected with the hinge rod 12.2, and the bracket is provided with the stopper 12.4 which is used for stopping the sliding block 12.1. The first elastic member is a pre-pressing spring, the sliding block is provided with the inner sliding groove and the outer sliding groove which are communicated, the slide rod and the first slide block are slidably matched with the outer sliding groove and the inner sliding groove respectively, the first slide block is pressed against the inner sliding groove under the action of the first elastic member, when the vertical moving part moves backward, the slide rod and the first slide block push the sliding block backward through the first elastic member, the sliding block moves backward with the upper end of the hinge member, the lower end of the hinge member drives the fixed shaft to move downward with the lowering pressing assembly, the first positioning strip and the second positioning strip of the lowering pressing assembly press the steel bars, the lowering pressing assembly presses the chord, the sliding block is kept unmoved after being stopped by the stopper, and the vertical moving part compresses the first elastic member and continues to move backward.

[0021] The inner pressing assembly 13 comprises the stabilizing block 13.1 which is symmetrically arranged at the rear end of the lowering pressing assembly 5, the stabilizing block 13.1 is provided with the second inclined block 13.2 which is slidably matched vertically, the two second inclined blocks 13.2 are connected with the fixed rod which can be pressed by the first inclined block 11.4, and the bottom of the stabilizing block 13.1 is slidably matched with the inner pressing block 13.3 which is longitudinally matched with the second inclined block 13.2. The left and right sides of the rear end of the inner pressing block are provided with the second elastic member which is connected with the stabilizing block, the second elastic members on the left and right sides avoid the middle second inclined block, when the vertical moving part moves backward, the inclined surface of the first inclined block presses the fixed rod and the second inclined block thereon, the second inclined block drives the inner pressing block to move forward, the inner pressing block presses the chord, so that the chord is close to the lower steel bars, then the fixed rod is pressed against the lower end surface of the first inclined block, the fixed rod, the second inclined block and the inner pressing block are kept unmoved, so as to weld the chord on both sides, then the vertical moving part moves forward to reset, the first inclined block is separated from the fixed rod, the inner pressing block moves backward to reset under the action of the second elastic member, and the inner pressing block drives the second inclined block and the fixed rod to move upward to reset.

[0022] The shifting assembly 14 includes a rotating shaft 14.3 rotatable to the lowering member 5 and a first spur gear 14.1. A torsion spring is provided between the rotating shaft 14.3 and the lowering member 5. A rack 11.5 can mesh with the first spur gear 14.1. An upper shifter 14.4, a second spur gear 14.2, and a lower shifter 14.5 are sequentially keyed on the rotating shaft 14.3 from top to bottom. The axes of the rotating shaft 14.3 and the upper and lower welding torches 8 are in the same plane. The welding torches are vertically arranged. The second spur gear 14.2 meshes with the first spur gear 14.1. The torsion spring causes the welding torches to lean to one side. The upper section of the rotating shaft rotates and slides up and down to fit against the support plate. The rearward-moving rack meshes with the first spur gear. The first spur gear drives the second spur gear to rotate. The second spur gear drives the rotating shaft to rotate. The rotating shaft rotates the upper and lower shifters, which respectively shift the upper and lower welding torches to the other side.

[0023] Both the upper pusher 14.4 and the lower pusher 14.5 have racetrack-shaped guide grooves for moving the welding torch 8.

[0024] See Figure 9 , Figure 13 The lowering component 5 is composed of the outer abutment parts 5.1 on the left and right sides connecting the upper platform 5.2 and the lower platform 5.3 on the upper and lower sides, respectively. The upper platform 5.2 and the lower platform 5.3 are respectively provided with upper horizontal groove 5.4 and lower horizontal groove 5.5.

[0025] Guide rails 15 are horizontally arranged on both the upper platform 5.2 and the lower platform 5.3. A sleeve 9 is fixed to the outside of the welding torch 8 and is movable in the upper horizontal groove 5.4 or the lower horizontal groove 5.5. A second slider is provided on the side wall of the sleeve 9 and slides on the guide rail 15. The sleeve slides in the guide groove of the upper and lower levers. The welding torch slides on the guide rail by moving left and right through the second slider. When the rotating lever moves the sleeve, the welding torch moves along the guide rail to the other side.

[0026] The specific workflow of this invention is as follows: The worker positions three reinforcing bars on the positioning block, with the chord reinforcement abutting the upper surface of the base plate and the side wall of the positioning block. The positioning block limits the left and right movement of the reinforcing bars and chord reinforcement. Then, the positioning block is pushed, thereby pushing the positioned reinforcing bars and chord reinforcement below the lowering member and aligning them. Figure 5As shown, the servo cylinder drives the longitudinal moving member to move backward, the slide rod and the first sliding block push the sliding block backward through the first elastic member, the sliding block moves backward with the upper end of the hinged member, the lower end of the hinged member drives the fixed shaft to lower the lowering member to the bottom, the first positioning strip and the second positioning strip of the lowering member abut against the steel bars, the lowering member abuts against the chord, the sliding block is blocked by the stop block and remains stationary, the longitudinal moving member compresses the first elastic member and continues to move backward, the inclined surface of the first inclined block presses the fixed rod and the second inclined block (the lowered fixed rod does not conflict with the first inclined block) thereon, the second inclined block drives the inner abutting block to move forward, the inner abutting block abuts against the chord, the fixed rod, the second inclined block and the inner abutting block remain stationary, the upper and lower welding guns weld one side of the chord (the chord is connected with the right side of the upper and lower steel bars respectively), and then Figure 6 As shown, the rack is engaged with the first spur gear, the first spur gear drives the second spur gear to rotate, the second spur gear drives the rotating shaft to rotate, the rotating shaft rotates with the upper and lower shifting members, the shifting members shift the sleeves and the welding guns, the two welding guns are simultaneously shifted to the other side along the guide rails, the upper and lower welding guns weld the other side of the chord (the chord is connected with the left side of the upper and lower steel bars respectively), and then Figure 7 、 8 As shown, then the servo cylinder drives the longitudinal moving member to move forward to reset, the rack drives the rotating shaft and the shifting member to reverse, the shifting member shifts the welding gun to reset along the guide rail, the rack is separated from the first spur gear, the welding gun is stationary on one side under the action of the torsion spring, the first inclined block is separated from the fixed rod, the inner abutting block moves backward to reset under the action of the second elastic member, the inner abutting block drives the second inclined block and the fixed rod to move upward to reset, the slide rod and the first sliding block pull the sliding block forward through the first elastic member, the sliding block drives the fixed shaft and the lowering member to rise to reset through the hinged rod, and then the worker pushes the positioning block to weld the next chord, and the above steps are repeated to complete the welding of the chord on one side.

[0027] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the technical principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A welding device for steel trusses in construction, characterized in that: The device includes a base plate with positioning blocks that slide horizontally left and right. Supports are symmetrically arranged front and back on the base plate, and support plates are horizontally mounted on the two supports. A lowering component is elastically and vertically mounted below the support plates. A first positioning strip and a second positioning strip are respectively provided at the bottom of the upper and lower sides of the lowering component. Welding guns are slidably mounted on both the upper and lower sides of the lowering component. A longitudinally moving component driven by a servo electric cylinder is slidably mounted on the front support. The lowering component is equipped with a lifting assembly, an inner abutment assembly, and a shifting assembly. When the longitudinally moving component moves backward, it is driven by the lifting assembly to descend to the bottom and abut against the outer edge of the chord reinforcement. The first and second positioning strips abut against the reinforcing bars. The longitudinally moving component drives the inner abutment assembly to abut against the chord reinforcement. The two welding guns weld to one side of the chord reinforcement. The longitudinally moving component then drives the welding guns to move laterally to the other side via the shifting assembly, where the welding guns weld to the other side of the chord reinforcement.

2. The welding device for steel trusses in construction as described in claim 1, characterized in that: The lowering component has first guide rods arranged vertically and symmetrically on its left and right sides, and the support plate is equipped with guide sleeves that allow the first guide rods to slide.

3. The welding device for steel trusses in construction as described in claim 1, characterized in that: The longitudinal moving member consists of a middle connecting part connecting an upper sliding rod and a lower first inclined block. The end of the sliding rod is provided with a first slider, and the first inclined block is longitudinally provided with a rack. The connecting part is longitudinally provided with a second guide rod that slides on the bracket.

4. The welding device for steel trusses in construction as described in claim 3, characterized in that: The lifting assembly includes a sliding block that is slidably fitted to the slide rod and the first slider. The slide rod is fitted with a first elastic member that connects the sliding block and the connecting part. A fixed shaft is horizontally mounted on the lowering member. A hinge rod is hinged between the sliding block and the fixed shaft. A stop block for blocking the sliding block is provided on the bracket.

5. The welding device for steel trusses in construction as described in claim 3, characterized in that: The inner abutment component includes stabilizing blocks symmetrically arranged at the rear end of the lowering member. A second inclined block is vertically slidably mounted on the stabilizing block. A fixing rod that can be pressed down by the first inclined block is connected between the two second inclined blocks. An inner abutment block that cooperates with the second inclined block is elastically and longitudinally slidably mounted at the bottom of the stabilizing block.

6. The welding device for steel trusses in construction as described in claim 3, characterized in that: The shifting assembly includes a rotating shaft that rotates on the lowering member and a first spur gear. A torsion spring is provided between the rotating shaft and the lowering member. The rack can mesh with the first spur gear. An upper shifting member, a second spur gear, and a lower shifting member are sequentially keyed on the rotating shaft from top to bottom. The second spur gear meshes with the first spur gear.

7. The welding device for steel trusses in construction as described in claim 6, characterized in that: Both the upper and lower pushers have racetrack-shaped guide grooves for moving the welding torch.

8. The welding device for steel trusses in construction as described in claim 6, characterized in that: The axes of the rotating shaft and the upper and lower welding guns are in the same plane.

9. The welding device for steel trusses in construction as described in claim 1, characterized in that: The lowering component consists of outer abutment parts on the left and right sides connected to upper and lower platforms on the upper and lower sides, respectively. Upper and lower horizontal grooves are respectively provided on the upper and lower platforms.

10. The welding device for steel trusses in construction as described in claim 1, characterized in that: Both the upper platform and the lower platform are provided with guide rails in the horizontal direction. The welding gun is fixed with a sleeve that moves in the upper or lower horizontal groove. The side wall of the sleeve is provided with a second slider that slides on the guide rail.

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