Bar frame butt welding is with compressing tightly location frock
Technical Field
The invention relates to a compressing and positioning tool for butt welding connection of strip frames of surrounding frames of equipment in a box body type structure form, in particular to a compressing and positioning tool and a compressing and positioning method used when two strip frames with arc-shaped cross sections are butt welded together.
Background
The equipment with the shielding function in the box body structure form generally adopts the structure form that the periphery is surrounded by a frame and a front door and a rear door are matched so as to realize the shielding and sealing functions of the equipment in the box; the four-side enclosure frame is generally manufactured by three methods: the first method is that the section bar is machined; the second method is to bend or bend the sheet material; the third method is to weld the steel plate and the support frame in an assembly mode. For the third method, a manual butt welding process is generally adopted, two strip frames with arc cross sections are welded together in an assembling mode, positioning deviation is easy to occur during manual butt welding of the two strip frames, after the two strip frames are assembled and positioned, a welding workpiece is easy to deform due to release of welding stress, the surrounding frames are welded in an assembling mode, and the generated positioning deviation and deformation generated by release of stress after welding can affect the shielding and sealing functions of box body equipment.
Disclosure of Invention
The invention provides a pressing and positioning tool and a pressing and positioning method for butt welding of strip frames, and solves the technical problems that positioning deviation of butt joints and deformation after welding are easy to occur when the strip frames with circular arcs are butt welded.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: arranging a welding support positioning module, arranging a positioning step on the welding support positioning module, and placing the end faces of the inner sides of the two strip-shaped frames which are in butt welding on the positioning step to realize accurate butt joint of the two strip-shaped frames; and the welding support positioning module is provided with two pressing mechanisms which are pressed on two sides of the butt welding seam so as to overcome the release of welding stress.
A pressing and positioning tool for butt welding of a strip-shaped frame comprises a reference bottom plate and the strip-shaped frame with an arc-shaped corner, wherein a rectangular welding support positioning block with a left step and a right step is fixedly arranged on the reference bottom plate, a right upper end positioning step is arranged on an upper step of the right step of the welding support positioning block, a right lower end positioning step is arranged on a lower step of the right step of the welding support positioning block, a left upper end positioning step is arranged on the upper step of the left step of the welding support positioning block, a left lower end positioning step is arranged on the lower step of the left step of the welding support positioning block, an inner side straight line segment is arranged on the inner side edge of the strip-shaped frame with the arc-shaped corner, an outer side straight line segment is arranged on the outer side edge of the strip-shaped frame with the arc-shaped corner, the strip-shaped frame with the arc-shaped corner is arranged on the right step of the welding support positioning block, and an inner, the outer side straight line segment arranged on the outer side edge of the strip-shaped frame with the arc-shaped corner is arranged on the positioning step at the right lower end, a locking mechanism right trapezoid supporting seat is fixedly arranged on the reference bottom plate below the right side of the strip-shaped frame with the arc-shaped corner, an L-shaped driven rod hinging seat and a hinge rod hinging seat are respectively arranged on the inclined plane of the locking mechanism right trapezoid supporting seat, the lower end of the L-shaped driven rod is hinged on the L-shaped driven rod hinging seat, a hinge rod is hinged on the hinge rod hinge seat, the V-shaped bottom of the V-shaped driving swing rod is hinged with the other end of the hinge rod, the top end of one side of the V-shaped driving swing rod is hinged with the turning part of the L-shaped driven rod, the upper end of the L-shaped driven rod is provided with a compression positioning screw rod, the top end of the inner side of the compression positioning screw rod is provided with a compression arc-shaped surface, and the compression arc-shaped surface is matched and compressed with the outer arc-shaped surface of the strip-shaped frame with the arc-shaped corner.
The cross section of the right-angled trapezoid supporting seat of the locking mechanism is in a right-angled trapezoid shape; the compaction positioning screw is in threaded connection with the upper end of the L-shaped driven rod, and a locking nut is arranged between the upper end of the L-shaped driven rod and the compaction positioning screw; a locking mechanism right-angle trapezoidal supporting seat and a locking mechanism are arranged on two sides of a welding seam of two strip-shaped frames with arc-shaped corners in butt welding; and a steel plate is arranged between the strip frame with the arc-shaped corner arranged on the right step of the cuboid-shaped welding support positioning block and the strip frame with the arc-shaped corner arranged on the left step of the cuboid-shaped welding support positioning block.
A butt welding, compressing and positioning method for a strip frame comprises the following steps:
firstly, fixedly arranging a rectangular welding support positioning block with a left step and a right step on a reference bottom plate, arranging a right upper end positioning step on an upper step of the right step of the welding support positioning block, and arranging a right lower end positioning step on a lower step of the right step of the welding support positioning block; placing the strip-shaped frame with the arc-shaped corner on the right step, so that an inner side straight line section arranged on the inner side edge of the strip-shaped frame with the arc-shaped corner is arranged on the right upper end positioning step, and an outer side straight line section arranged on the outer side edge of the strip-shaped frame with the arc-shaped corner is arranged on the right lower end positioning step;
secondly, fixedly arranging a locking mechanism right-angled trapezoid supporting seat on a reference bottom plate below the right side of the bar-shaped frame with the arc-shaped corner, respectively arranging an L-shaped driven rod hinging seat and a hinge rod hinging seat on an inclined plane of the locking mechanism right-angled trapezoid supporting seat, hinging the lower end of an L-shaped driven rod on the L-shaped driven rod hinging seat, hinging a hinge rod on the hinge rod hinging seat, hinging the V-shaped bottom of a V-shaped driving swing rod with the other end of the hinge rod, hinging the top end of one side of the V-shaped driving swing rod with the turning part of the L-shaped driven rod, arranging a compression positioning screw rod at the upper end of the L-shaped driven rod, arranging a compression arc-shaped surface at the top end of the inner side of the compression positioning screw rod, and matching the compression arc-shaped surface with;
thirdly, placing a second strip-shaped frame with the arc-shaped corner in butt welding with the strip-shaped frame with the arc-shaped corner on a right step of the welding support positioning block, enabling welding ports of the two strip-shaped frames with the arc-shaped corners to be in butt joint, repeating the step of the second step, and arranging a locking mechanism right-angle trapezoidal support seat and a locking mechanism of the second strip-shaped frame with the arc-shaped corner below the right side of the second strip-shaped frame with the arc-shaped corner;
fourthly, lifting the V-shaped driving swing rod of the locking mechanism upwards to enable a pressing arc-shaped surface arranged at the top end of the inner side of the pressing positioning screw rod to be pressed with an outer arc-shaped surface of the strip-shaped frame with the arc-shaped corner; operating a locking mechanism of a second strip-shaped frame with the arc-shaped corner by the same method to tightly press the outer arc surface of the second strip-shaped frame with the arc-shaped corner;
fifthly, carrying out butt welding at the butt joint of the strip-shaped frame with the arc-shaped corner and a second strip-shaped frame with the arc-shaped corner;
sixthly, after the welding seam is cooled to the normal temperature for 1 hour, and after the welding stress is released, respectively and slowly swinging the two V-shaped driving swing rods downwards, loosening the two pressing and positioning screws pressed on the outer arc surface of the strip-shaped frame with the arc-shaped corner, and completing the butt welding of the two strip-shaped frames.
According to the invention, on the basis of the integral reference plane, the positioning and locking mechanism is used for radially pressing and positioning the outer circular arcs of the strip-shaped frames, so that the butt joint precision of the two strip-shaped frames is improved, butt welding is facilitated, the welding quality is greatly improved, after a workpiece to be welded is cooled and welding stress is eliminated, the locking mechanism is slowly released, the welded workpiece is removed, and the deformation of the strip-shaped frames caused by stress release after welding is also overcome.
Drawings
FIG. 1 is a schematic view of the structure of a strip frame 5 with arc-shaped corners of the present invention when it is positioned and pressed;
FIG. 2 is a schematic view of the hold-down mechanism of the present invention when open;
fig. 3 is a schematic structural diagram of the present invention in a side view direction.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a pressing and positioning tool for butt welding of a strip-shaped frame comprises a reference bottom plate 1 and a strip-shaped frame 5 with an arc-shaped corner, wherein a rectangular welding support positioning block 2 with a left step and a right step is fixedly arranged on the reference bottom plate 1, a right upper end positioning step 3 is arranged on the upper step of the right step of the welding support positioning block 2, a right lower end positioning step 4 is arranged on the lower step of the right step of the welding support positioning block 2, a left upper end positioning step is arranged on the upper step of the left step of the welding support positioning block 2, a left lower end positioning step is arranged on the lower step of the left step of the welding support positioning block 2, an inner side straight line segment 6 is arranged on the inner side edge of the strip-shaped frame 5 with the arc-shaped corner, an outer side straight line segment 7 is arranged on the outer side edge of the strip-shaped frame 5 with the arc-shaped corner, the strip-shaped frame 5 with the arc, an inner side straight line segment 6 arranged on the inner side edge of the strip-shaped frame 5 with the arc-shaped corner is arranged on the right upper end positioning step 3, and an outer side straight line segment 7 arranged on the outer side edge of the strip-shaped frame 5 with the arc-shaped corner is arranged on the right lower end positioning step 4; a locking mechanism right-angle trapezoid supporting seat 8 is fixedly arranged on a reference bottom plate 1 below the right side of a strip-shaped frame 5 with an arc-shaped corner, an L-shaped driven rod hinging seat 9 and a hinge rod hinging seat 16 are respectively arranged on the inclined plane of the locking mechanism right-angle trapezoid supporting seat 8, the lower end of an L-shaped driven rod 10 is hinged on the L-shaped driven rod hinging seat 9, a hinge rod 15 is hinged on the hinge rod hinging seat 16, the V-shaped bottom of a V-shaped driving swing rod 14 is hinged with the other end of the hinge rod 15, the top end of one side of the V-shaped driving swing rod 14 is hinged with the turning part of the L-shaped driven rod 10, a compression positioning screw rod 11 is arranged at the upper end of the L-shaped driven rod 10, a compression arc-shaped surface 13 is arranged at the top end of the inner side of the compression positioning screw rod 11, and the compression arc.
The cross section of the locking mechanism right-angled trapezoid supporting seat 8 is in a right-angled trapezoid shape; the compaction positioning screw rod 11 is screwed with the upper end of the L-shaped driven rod 10, and a locking nut 12 is arranged between the upper end of the L-shaped driven rod 10 and the compaction positioning screw rod 11; two sides of a welding seam of two strip-shaped frames 5 which are butt-welded and provided with arc-shaped corners are provided with a locking mechanism right-angled trapezoid supporting seat 8 and a locking mechanism; a steel plate 17 is provided between the strip frame 5 with the arc-shaped corner provided on the right step of the rectangular parallelepiped welding support positioning block 2 and the strip frame with the arc-shaped corner provided on the left step of the rectangular parallelepiped welding support positioning block 2.
A butt welding, compressing and positioning method for a strip frame comprises the following steps:
firstly, fixedly arranging a rectangular welding support positioning block 2 with a left step and a right step on a reference bottom plate 1, arranging a right upper end positioning step 3 on an upper step of the right step of the welding support positioning block 2, and arranging a right lower end positioning step 4 on a lower step of the right step of the welding support positioning block 2; placing a strip-shaped frame 5 with an arc-shaped corner on the right step, so that an inner side straight line segment 6 arranged on the inner side edge of the strip-shaped frame 5 with the arc-shaped corner is arranged on the right upper end positioning step 3, and an outer side straight line segment 7 arranged on the outer side edge of the strip-shaped frame 5 with the arc-shaped corner is arranged on the right lower end positioning step 4;
secondly, fixedly arranging a locking mechanism right-angle trapezoidal support seat 8 on a reference bottom plate 1 below the right side of a strip-shaped frame 5 with an arc-shaped corner, respectively arranging an L-shaped driven rod hinge seat 9 and a hinge rod hinge seat 16 on an inclined plane of the locking mechanism right-angle trapezoidal support seat 8, hinging the lower end of an L-shaped driven rod 10 on the L-shaped driven rod hinge seat 9, hinging a hinge rod 15 on the hinge rod hinge seat 16, hinging the V-shaped bottom of a V-shaped driving swing rod 14 and the other end of the hinge rod 15 together, hinging the top end of one side of the V-shaped driving swing rod 14 and the turning part of the L-shaped driven rod 10 together, arranging a pressing and positioning screw rod 11 at the upper end of the L-shaped driven rod 10, arranging a pressing arc-shaped surface 13 at the top end of the inner side of the pressing and positioning screw rod 11, and matching the pressing arc-shaped;
thirdly, placing a second strip-shaped frame with the arc-shaped corner, which is butt-welded with the strip-shaped frame 5 with the arc-shaped corner, on the right step of the welding support positioning block 2, butt-welding the welding ports of the two strip-shaped frames with the arc-shaped corner together, enabling the two strip-shaped frames with the arc-shaped corner to be on the same reference surface, arranging 1 mm of welding seam allowance between the welding end surfaces of the two strip-shaped frames with the arc-shaped corner, repeating the step of the second step, and arranging a locking mechanism right-angled trapezoid supporting seat and a locking mechanism of the second strip-shaped frame with the arc-shaped corner below the right side of the second strip-shaped frame with the arc-shaped corner;
fourthly, the V-shaped driving swing rod 14 of the locking mechanism is lifted upwards to enable a pressing arc-shaped surface 13 arranged at the top end of the inner side of the pressing positioning screw rod 11 to be pressed with an outer arc-shaped surface of the bar-shaped frame 5 with the arc-shaped corner; operating a locking mechanism of a second strip-shaped frame with the arc-shaped corner by the same method to tightly press the outer arc surface of the second strip-shaped frame with the arc-shaped corner;
fifthly, carrying out butt welding at the butt joint of the strip-shaped frame 5 with the arc-shaped corner and a second strip-shaped frame with the arc-shaped corner;
sixthly, after the welding seam is cooled to the normal temperature for about 1 hour and the welding stress is released, respectively and slowly swinging the two V-shaped driving swing rods 14 downwards, loosening the two pressing and positioning screws pressed on the outer arc surface of the strip-shaped frame with the arc-shaped corner, and completing the butt welding of the two strip-shaped frames.
The right trapezoid supporting seat 8 and the strip-shaped frame 5 with the arc-shaped corner of the locking mechanism can be uniformly distributed along the arrangement direction of the two pairs of welding rod-shaped frames and are required to be arranged on two sides of the butt weld 18; after butt welding is finished, the steel plates 17 between the two strip-shaped frames can be welded together; the pressing mechanism presses the outer arc surface of the bar-shaped frame 5 along the direction forming an angle of 45 degrees with the horizontal direction, so that the bar-shaped frame 5 is stressed in the horizontal and vertical directions, and the pressing and positioning effects are achieved in the horizontal and vertical directions.