CN114406044A

CN114406044A - U-rib code-free correction and positioning all-in-one machine and use method

Info

Publication number: CN114406044A
Application number: CN202210103901.8A
Authority: CN
Inventors: 袁俊; 马增岗; 王亚栋; 支燕军; 孙蕾蕾
Original assignee: China Railway Baoji Bridge Group Co Ltd; China Railway Baoji Bridge Yangzhou Co Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd; China Railway Baoji Bridge Yangzhou Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-04-29

Abstract

The invention relates to a U-rib code-free correction and positioning integrated machine and a using method, wherein the integrated machine has the functions of correcting, positioning and compressing U ribs of a steel box girder top and a bottom plate unit, and can quickly, accurately and compactly position a plurality of U ribs at corresponding positions of the steel box girder top and the bottom plate, and the integrated machine consists of a walking trolley, an electrical system, a hydraulic system, a gantry, a compression module and a U-rib compression mold; the gantry is fixed on the walking trolley, the hydraulic system is located on the upper end face of the gantry, the electric control system is located on the upper end face of the gantry and used for controlling a driving mechanism in the walking trolley and a driving mechanism in the hydraulic system, a plurality of pressing module upper end face guide rail sliding blocks are hung in a transverse moving linear guide rail below a gantry middle cross beam, the pressing modules move left and right along the transverse moving linear guide rail under the action of the transverse moving mechanism, and the U-rib pressing die is located below the pressing modules and controls the working state of the U-rib pressing die through the pressing modules.

Description

U-rib code-free correction and positioning all-in-one machine and use method

Technical Field

The invention relates to a U-rib non-code correction and positioning all-in-one machine which has the functions of correcting, positioning and compressing U ribs of a steel box girder top and bottom plate unit and can quickly, accurately and compactly position a plurality of U ribs at corresponding positions of the steel box girder top and bottom plate and a using method thereof, belonging to the field of steel structure bridge manufacturing.

Background

CN108086167A entitled device for automatically positioning U rib plate unit without code assembly, which comprises a hydraulic pressing system (2), a U rib positioning system (1) and an electric walking system (3); the positioning system track (6) is a main body structure of the electric traveling system (3), and two ends of the positioning system track (6) are driven by hydraulic cylinders; the U rib positioning system (1) is connected with the hydraulic pressing system (2), and the hydraulic pressing system (2) is arranged on a positioning system rail (6); the hydraulic compaction system (2) consists of a plurality of groups of hydraulic compaction units, and the hydraulic compaction units are arranged on the positioning system track (6) in parallel; each hydraulic pressing unit consists of a hydraulic jack (4) and a U-rib fixture (5), the hydraulic jack (4) is installed on the U-rib fixture (5), and the U-rib fixture (5) is clamped on a U rib plate. The U-shaped rib pressing device has the disadvantages that firstly, the whole device is not provided with a left-hand thread mechanism, when a U-shaped rib is pressed, the pressing counter force is provided only by the self weight of the device, and the whole device is easy to warp; secondly, the positioning accuracy of the hydraulic pressing system (2) on the positioning system track (6) is not high, the locking is not reliable enough, and when the U rib is pressed, the pressing unit is easy to shift integrally on the positioning system track (6) due to the influence of the lateral bending of the U rib, so that the U rib is positioned in a deviation manner; thirdly, certain deviation exists between the actual U rib and the theoretical size during manufacturing, if the U rib fixture (5) is directly clamped on the U rib to be compressed, the U rib fixture (5) is often reset and retracted, the deformed U rib can be clamped in the U rib fixture (5), and the U rib fixture (5) is integrally pulled up along with the U rib fixture and cannot be separated.

Disclosure of Invention

The design purpose is as follows: the U-rib code-free correction and positioning all-in-one machine and the use method avoid the defects in the background art, and the U-rib code-free correction and positioning all-in-one machine has the functions of correcting, positioning and compressing U ribs of a steel box girder top and a bottom plate unit, and can be used for quickly, accurately and compactly positioning a plurality of U ribs at corresponding positions of the steel box girder top and the bottom plate.

The design scheme is as follows: the orthotropic U rib plate unit is a very important and most widely applied structural type in a steel structure bridge, and when the U rib plate unit is manufactured, grooves on two sides of a steel plate are required to be processed and bent to form a single U-shaped rib, and then a plurality of U ribs are positioned on the top and the bottom of a steel box girder to form the orthotropic U rib plate unit. Because the U rib can generate structural deformation during groove machining and bending, when the U rib is positioned, the opening of the U rib needs to be corrected, and after the bevel edge is aligned with the corresponding positions of the top plate and the bottom plate, the U rib is tightly pressed and attached to complete positioning. The traditional manufacturing method comprises the following steps: a stacking plate similar to the shape of a U-rib is cut out according to the shape of the U-rib, the stacking plate is sleeved on the outer side of the U-rib and is welded and fixed with a top plate and a bottom plate, an oblique iron is filled between the stacking plate and the gap of the U-rib to force the slope edge of the U-rib to be aligned and closely attached to the base lines of the top plate and the bottom plate, meanwhile, in order to ensure the distance between a plurality of U-ribs, transverse supporting rods with the same size are also required to be filled between the U-ribs to control the distance, the U-rib positioning mode needs to manufacture the transverse supporting rods with different sizes to adapt to the change of the distance between the U-ribs, the stacking plate needs to be welded on the top plate and the bottom plate during each positioning, after the U-rib positioning is completed, the stacking plate needs to be planed, welding spots are smoothly polished, sometimes, a base metal is damaged during air planing of welding seams, and the product quality is seriously affected. Therefore, the invention has the structural design that: the device mainly comprises a walking trolley, a portal frame, a pressing module, a U-rib pressing die, a hydraulic system and an electrical system.

The walking trolley mainly comprises a trolley frame, a trolley wheel set, a driving mechanism, a guide mechanism, a left-hand thread mechanism and the like. The driving mechanism drives the wheel set to rotate, so that the whole electric linear walking of the equipment is realized, the guide mechanism is used for preventing the equipment from deflecting, and the longitudinal walking precision is ensured; the track is held tightly by the left-hand thread mechanism, and when the U rib is pressed tightly by the equipment, the anchoring effect is achieved, and the equipment is prevented from being warped.

The portal mainly comprises landing legs, a cross beam, a transverse moving rack, a transverse moving linear guide rail and the like. The landing leg flange and the trolley frame flange bolt the portal frame and the walking trolley into a whole through bolts, the pressing modules are hung on the linear guide rail at the lower part of the cross beam, and the transverse moving rack is used for realizing transverse precise parallel movement of the pressing modules.

The pressing module mainly comprises a box body, a guide rail sliding block, a hydraulic cylinder, a guide pillar, a guide sleeve, a positioning plate, a transverse moving mechanism, a clamping mechanism and the like. The gear of the transverse moving mechanism is rotated to drive the whole pressing module to transversely move on the beam, the vortex type dividing disc is used for carrying out precise bolt positioning, and double-layer clamping braking is realized through the clamp type clamping mechanism. The hydraulic cylinder drives the positioning plate to lift, and the positioning plate is guided by matching two sets of guide columns and guide sleeves, so that the positioning plate is integrally precise and does not deflect.

The U-rib pressing die mainly comprises a positioning frame, a roller and a rolling shaft. A theoretical U rib model is established by means of the four-point positioning idler wheels and the concave surfaces of the positioning frames, and correction of the U ribs is achieved through compression type rolling shrinkage constraint.

The hydraulic system mainly comprises a hydraulic valve, a hydraulic pipeline, a hydraulic pump station and the like. The integral or independent extension of a plurality of oil cylinders and the adjustment of pressing force are realized.

The electrical system mainly comprises an electrical cabinet, electrical components, wires and cables, a wire groove and a wire pipe and the like. And various electric protection and electric remote control functions of the equipment are realized.

The technical scheme 1: a U-rib code-free correction and positioning integrated machine comprises a walking trolley, an electrical system, a hydraulic system, a gantry, a pressing module and a U-rib pressing die; the gantry is fixed on the walking trolley, the hydraulic system is located on the upper end face of the gantry, the electric control system is located on the upper end face of the gantry and used for controlling a driving mechanism in the walking trolley and a driving mechanism in the hydraulic system, a plurality of pressing module upper end face guide rail sliding blocks are hung in a transverse moving linear guide rail below a gantry middle cross beam, the pressing modules move left and right along the transverse moving linear guide rail under the action of the transverse moving mechanism, and the U-rib pressing die is located below the pressing modules and controls the working state of the U-rib pressing die through the pressing modules.

The technical scheme 2 is as follows: a method for using a U-rib code-free correction and positioning integrated machine comprises rotating a locking rocker arm to drive a transverse gear to rotate, enabling a pressing module to transversely move on a cross beam, inserting a plug pin into an inner hole of a vortex type indexing disc after the plug pin is aligned with the theoretical U-rib space size and position on a U-rib plate unit to complete one-time positioning, then the locking handle is rotated, secondary double-layer clamping braking is carried out through the clamping pincers, a hydraulic and electric system is started, remote control is carried out by hand, the U rib pressing die is wholly or independently pressed down, the roller and the inner concave surface of the positioning frame are made to be tightly attached to the outer surface of the U rib, meanwhile, the U rib bevel edge is kept to be closely attached and aligned with the theoretical position of the top bottom plate of the U rib plate unit, after the U rib plate unit is fixed by spot welding, and retracting the U rib pressing die, moving the operating equipment to the next correction positioning position on the track of the walking trolley, and repeating the pressing action until the correction positioning of all the U rib plate units is completed.

Compared with the prior art, the device is pressed by the hydraulic cylinder of the pressing module, the left-hand thread mechanism is hung on the rail to provide pressing counter force, and the integral upwarp phenomenon of the device cannot occur; secondly, three-dimensional precise movement of the U-rib pressing die is realized by means of matching of a longitudinal rail and a guide wheel, matching of a transverse linear guide rail and a sliding block and matching of a guide pillar and a guide sleeve in the vertical direction, and the deviation of the positioning precision of the U rib is less than 1 mm; thirdly, the transverse moving mechanism of the compressing module adopts a vortex type dividing disc to perform bolt positioning, and then performs double-layer clamping braking through a clamp type clamping mechanism, so that the positioning is reliable, the positioning precision is 0.5mm, and the compressing module cannot be displaced due to the side bending influence of a U rib; fourthly, a rolling type U rib pressing die design is adopted, 4-point positioning rollers are installed according to the theoretical outer contour size of the U rib to carry out pressing type rolling shrinkage constraint, the phenomenon of friction and clamping of the U rib and the U rib pressing die is avoided, the U rib correction and positioning process is completed at one time, and the construction efficiency is improved by 30% compared with the background technology; fifthly, the design can realize simultaneous or independent correction and positioning of a plurality of U ribs, and can be flexibly suitable for U rib plate units with different intervals, and the application range is wide.

Drawings

FIG. 1 is a schematic diagram of a U-rib code-free correction and positioning integrated machine, wherein 1 is a walking trolley 2, an electric system 3, a hydraulic system 4, a portal frame 5, a pressing module 6 and a U-rib pressing die.

Fig. 2 is a schematic view of a running carriage, wherein 7-the guiding mechanism 8-the carriage frame 9-the wheel set 10-the left-hand catch mechanism 11-the driving mechanism.

Fig. 3 is a schematic view of the gantry, with 12-legs 13-beams.

Fig. 4 is a schematic view of the gantry, wherein 14-traverses the linear guide 15-traverses the rack.

Fig. 5 is a schematic perspective view of a hold-down module, wherein 16-the box 17-the rail slide 18-the traversing mechanism 19-the clamping jaws.

Fig. 6 is a schematic diagram of the internal structure of the pressing die set, wherein 20, a positioning plate 21, a guide sleeve 22, a guide post 23 and a hydraulic cylinder.

Fig. 7 is a schematic diagram of the traversing mechanism, wherein 24-the traversing carriage 25-the traversing gear 26-the scroll index plate 27-the latch 28-the locking rocker 29-the handle.

Fig. 8 shows a clamping pliers schematic in which 30-the pliers legs 31-the pivot 32-the friction disk 33-the locking handle.

Fig. 9 is a schematic view of a U-ribbed die, where 34-roller 35-spacer 36-roller 37-U-ribbed plate unit.

Fig. 10 is a background art schematic.

Detailed Description

Example 1: reference is made to fig. 1-9. The U-rib code-free correction and positioning integrated machine mainly comprises a walking trolley 1, an electrical system 2, a hydraulic system 3, a gantry 4, a pressing module 5 and a U-rib pressing die 6.

The walking trolley 1 mainly comprises a guide mechanism 7, a trolley frame 8, a wheel set 9, a left-hand thread mechanism 10, a driving mechanism 11 and the like. The driving mechanism 11 drives the wheel set 9 to rotate, so that the equipment can integrally and linearly travel on the track. The guide mechanisms 7 are installed at both ends of the bogie frame 8 to prevent the deflection thereof. The left-hand thread mechanism 10 is arranged below the trolley frame 8 and has a slight gap with the trolley track.

The gantry 4 mainly comprises support legs 12, a cross beam 13, a traversing linear guide rail 14, a traversing rack 15 and the like. The flange plates of the supporting legs 12 and the flange plates of the trolley frame 8 bolt the portal frame 4 and the walking trolley 1 into a whole through bolts. The transverse linear guide rail 14 and the transverse rack 15 are arranged below the cross beam side by side and are vertical to the trolley track.

The pressing module 5 mainly comprises a box 16, a guide rail slide block 17, a transverse moving mechanism 18, a clamping clamp 19, a positioning plate 20, a guide sleeve 21, a guide pillar 22, a hydraulic cylinder 23 and the like. 4 guide rail sliding blocks 17 are bolted at the upper end of the pressing module 5, so that the pressing module 5 can be integrally hung on the transverse linear guide rail 14 to roll. The front end of the pressing module 5 is provided with a transverse moving mechanism 18 and a clamping clamp 19, the rear end is not closed, and after the guide sleeve 21, the guide pillar 22 and the hydraulic cylinder 23 are installed, a dust guard is added for covering. The guide post 22 is arranged in an inner hole of the guide sleeve 21, a copper sleeve is embedded in the inner hole, and a fit clearance of 0.04-0.07mm is reserved. The guide post 22 and the tail end of the hydraulic cylinder 23 are connected with the positioning plate 20 through bolts to form a whole. The hydraulic cylinder 23 drives the positioning plate 20 to lift, and the positioning plate 20 is integrally precise and does not deflect to stretch and retract through the matched guiding of the two sets of guide posts 22 and the guide sleeve 21. The positioning plate 20 is provided with a step groove surface as a positioning reference for mounting with the U-rib pressing die 6.

The traversing mechanism 18 mainly comprises a traversing frame 24, a traversing gear 25, a vortex type indexing disc 26, a plug pin 27, a locking rocker arm 28, a handle 29 and the like. The front surface of the transverse moving frame 24 is bored, deep groove ball bearings are embedded in the holes, the inner holes of the bearings penetrate through a transverse moving gear 25, and the outer sides of the bearings are tightly pressed on the transverse moving frame 24 through bolts by means of a vortex type dividing plate 26. A locking rocker arm 28 is arranged at the shaft end of the transverse gear 25, one end of the locking rocker arm 28 is provided with a long round hole, and the other end of the locking rocker arm 28 is provided with a threaded hole. The handle 29 is mounted on the locking rocker arm 28 by means of a threaded connection, and the latch 27 is mounted in an oblong hole of the locking rocker arm 28.

The clamping pincers 19 mainly comprise a pincers arm 30, a rotating shaft 31, a friction plate 32, a locking handle 33 and the like. The pivot 31 passes through the two paired jawarms 30 and the locating block of the housing 16. The short arm end of the clamp arm 30 is provided with a friction plate 32 to increase the friction between the short arm end and the two side surfaces of the traverse rack 15. The tail end of the long arm of one of the forceps arms 30 is provided with a threaded hole, the tail end of the long arm of the other forceps arm 30 is provided with a hemispherical groove, and the locking handle 33 is screwed into the threaded hole and abuts against the hemispherical groove. By rotating the locking handle 33 clockwise, the two paired forceps arms 30 can be clamped on both sides of the traverse rack 15 around the rotating shaft 31.

The U-rib molding die 5 is mainly composed of a roller 34, a positioning frame 35 and a roller 36. The step groove surface and the hole group on the surface of the positioning frame 35 are matched with the positioning plate 20 for positioning and bolting. The roller 36 is embedded with a self-lubricating bearing, sleeved on the roller 34 and mounted on the positioning frame 35. The 4 positioning rollers 36 and the positioning frame 35 are concave surfaces to form a U-rib theoretical model.

Example 2: on the basis of embodiment 1, a method for using the U-rib code-free correction and positioning all-in-one machine is that a locking rocker arm 28 is rotated to drive a traverse gear 25 to rotate, so that a pressing module 5 moves transversely on a cross beam 13, after the spacing size and the position of the U-rib plate unit are aligned with the theoretical spacing size and the theoretical spacing position of the U-rib plate, a plug pin 27 is inserted into an inner hole of a vortex type index plate 26 to complete primary positioning, then a locking handle 33 is rotated, and secondary double-layer clamping braking is performed through a clamping clamp. Starting a hydraulic and electric system, carrying out hand-held remote control, integrally or independently pressing down the U rib pressing die 6 to enable the idler wheels 36 and the inner concave surface of the positioning frame 35 to be tightly attached to the outer surface of the U rib, simultaneously keeping the bevel edge of the U rib closely attached to and aligned with the theoretical position of the top bottom plate of the U rib plate unit, retracting the U rib pressing die after the U rib plate unit is fixed by spot welding, moving the operating equipment to the next correction positioning position on the track of the traveling trolley 1, and repeating the pressing action until the correction positioning of all the U rib plate units is completed.

It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the scope of the present invention.

Claims

1. A U-rib code-free correction and positioning integrated machine is characterized by comprising a traveling trolley, an electrical system, a hydraulic system, a gantry, a pressing module and a U-rib pressing die; the walking trolley is positioned at the lower parts of the two sides of the portal and is used for driving the whole equipment to linearly and synchronously move on the track; a linear guide rail and a transverse rack are arranged below a cross beam of the portal frame, a plurality of compaction modules are suspended on the cross beam through guide rail sliders, the space between the compaction modules is adjusted by a gear rack mechanism, and a vortex type dividing disc is used for locking; a U-rib pressing die is arranged below the pressing module, and the integral non-inclined lifting of the U-rib pressing die is realized through the matching of an internal hydraulic cylinder and a guide pillar and guide sleeve; the U rib pressing die is provided with the positioning idler wheels according to the theoretical outline size of the U rib, when the U rib pressing die is pressed down, the U rib with a deformed opening can be restrained and corrected through the positioning idler wheels and is pressed on the top bottom plate, and the electric control system and the hydraulic system are arranged above the gantry 4 and used for realizing the single remote control electric operation of the equipment.

2. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 1, wherein: the walking trolley mainly comprises a guide mechanism, a trolley frame, a wheel set, a left-hand thread mechanism and a driving mechanism; the driving mechanism drives the wheel set to rotate, so that the equipment can integrally and linearly travel on the track, the two ends of the trolley frame are provided with the guide mechanisms, and the left-hand thread mechanism is arranged below the trolley frame and leaves a micro gap with the trolley track.

3. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 1, wherein: the portal is mainly composed of supporting legs, a cross beam, a transverse linear guide rail and a transverse rack; the gantry and the walking trolley are bolted into a whole by the flange plates of the supporting legs and the flange plates of the trolley frame through bolts, and the transverse linear guide rail and the transverse rack are arranged below the cross beam side by side and are vertical to the trolley track.

4. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 1, wherein: the pressing module mainly comprises a box body, a guide rail slide block, a transverse moving mechanism, clamping pincers, a positioning plate, a guide sleeve, a guide pillar and a hydraulic cylinder; four guide rail slider bolts are in the upper end that compresses tightly the module, make and compress tightly the module and can wholly hang and roll on sideslip linear guide, compress tightly module front end installation sideslip mechanism and clamp pincers, the rear end is not sealed, treat that the installation has been accomplished the guide pin bushing, guide pillar and pneumatic cylinder after, add the dust guard and hide, the guide pillar is installed in the guide pin bushing hole, downthehole copper sheathing of inlaying, and leave 0.04-0.07mm fit clearance, the guide pillar all forms wholly through bolt and locating plate connection with the pneumatic cylinder end, the pneumatic cylinder drives the locating plate and goes up and down, through the cooperation direction of two sets of guide pillars and guide pin bushing, realize the whole precision of locating plate, there is not skew flexible.

5. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 4, wherein: the positioning plate is provided with a step groove surface as a positioning reference for mounting with the U-rib pressing die.

6. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 4, wherein: the transverse moving mechanism mainly comprises a transverse moving frame, a transverse moving gear, a vortex type dividing plate, a plug pin, a locking rocker arm and a handle; the front face of the transverse moving frame is bored, a deep groove ball bearing is embedded in the hole, a transverse moving gear penetrates through an inner hole of the bearing, the outer side of the bearing is tightly pressed on the transverse moving frame through a bolt by means of a vortex type dividing plate, a locking rocker arm is installed at the end of the transverse moving gear shaft, a long round hole is formed in one end of the locking rocker arm, a threaded hole is formed in the other end of the locking rocker arm, a handle is installed on the locking rocker arm through threaded connection, and a bolt is installed in the long round hole of the locking rocker arm.

7. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 4, wherein: the clamping pincers mainly comprise pincers arms, a rotating shaft, a friction plate and a locking handle; the rotating shaft penetrates through the two paired clamp arms and the positioning block of the box body, the friction plates are mounted at the tail ends of the short arms of the clamp arms, friction between the two side faces of the transverse moving rack is increased, a threaded hole is formed in the tail end of the long arm of one clamp arm, a hemispherical groove is formed in the tail end of the long arm of the other clamp arm, the locking handle is screwed into the threaded hole and abuts against the hemispherical groove, and the locking handle is rotated clockwise, so that the two paired clamp arms can be clamped on the two sides of the transverse moving rack around the rotating shaft.

8. The U-rib codeless correction and positioning all-in-one machine as claimed in claim 1, wherein: the U-rib pressing die mainly comprises a rolling shaft, a positioning frame and a roller; the groove surface and the hole group of the step on the surface of the positioning frame are matched with the positioning plate and are in positioning bolted connection, self-lubricating bearings are embedded in the rollers, are sleeved on the rolling shaft and are arranged on the positioning frame, so that the four positioning rollers and the inner concave surface of the positioning frame form a U-rib theoretical model.

9. A use method of a U-rib code-free correction and positioning all-in-one machine is characterized by comprising the following steps: the locking rocker arm is rotated to drive the transverse gear to rotate, so that the pressing module transversely moves on the cross beam, after the theoretical U rib spacing size and the position on the U rib plate unit are aligned, a bolt is inserted into an inner hole of the vortex type dividing disc to complete primary positioning, then the locking handle is rotated, secondary double-layer clamping braking is carried out through the clamping pincers, a hydraulic system and an electric system are started, remote control is carried out in a handheld mode, the U rib pressing die is wholly or independently pressed down, the roller is enabled to be tightly attached to the outer surface of the U rib with the inner concave surface of the positioning frame, meanwhile, the theoretical position of the top bottom plate of the U rib plate unit is kept closely attached to and aligned with the slope edge of the U rib plate unit, after the U rib plate unit is fixed in a spot welding mode, the U rib pressing die is retracted, the operating device moves to the next correction positioning position on a track of the traveling trolley, and the pressing action is repeated until the correction positioning of all the U rib plate units is completed.