CN110565542B - A hanging basket for cantilever casting continuous beams with small curvature radius - Google Patents

Abstract

The invention discloses a hanging basket for cantilever casting continuous beams with small curvature radius, which includes a main frame and a walking system. The main frame includes two triangular main trusses; each main truss consists of a truss main beam, a vertical rod, a front diagonal rod and a rear diagonal rod; the front, middle and rear ends of the truss main beam pass through the front node seat, middle fulcrum seat and rear respectively. The anchor seat is connected to the front end of the front inclined rod, the lower end of the vertical rod and the rear end of the rear inclined rod; the upper end of the vertical rod is connected to the rear end of the front inclined rod and the front end of the rear inclined rod respectively through the top node; the walking system includes two The walking track, the sliding mechanism and the traveling mechanism; the sliding mechanism includes two front sliding seats each installed between the two traveling rails and the middle fulcrum seats of the two main trusses; the traveling mechanism includes two front sliding seats that are each installed on the two traveling rails. The anti-locking wheel traveling device is between the rear anchor seats of the two main trusses. The invention solves the problems of horizontal rotation of the hanging basket around the front sliding seat, lateral deviation of the hanging basket and forward movement of the walking track.

Description

A hanging basket for cantilever casting continuous beams with small curvature radius

Technical field

The invention relates to a hanging basket for cantilever casting continuous beams with small curvature radius.

Background technique

In the cantilever casting construction of concrete continuous box girder for ordinary bridges using hanging baskets, since the direction of the box girder is straight, the cross slope of the box girder is generally about 0.02%, and it is symmetrically fixed from left to right. Therefore, for ordinary hanging baskets, as long as the walking track is flattened by steel sleepers, the hanging basket can be constructed smoothly.

However, the structure of the concrete continuous box girder of the DASH expressway ramp in Malaysia is completely different. The continuous beam is a single-box, single-chamber, variable-height, variable-section straight web section. The top plate of the box girder is 8.1 meters wide, and the bottom plate is 4.5 meters wide. The maximum cantilever The cast beam section is 4.34 meters long, and the box beam section 0 is 12 meters long. The beam bottom plate changes according to a parabola. The beam height at the root of the 0# section box beam is 5.0 meters, and the beam height at the side fulcrum is 2.5 meters. The direction of the box beams changes from left to right, large or small, in an arc shape. The cross slope of the box girder is one-way, the slope continuously changes from 0 to 5.3% or 5.3 to 0%, and the slope direction also changes from left to right. Therefore, the structure of the ordinary hanging basket cannot meet the cantilever casting construction of the box girder.

Due to the large cross-slope angle of the box girder surface, the height difference between the left and right rails of the hanging basket is also large, and it changes continuously from 0 to 5.3% or 5.3 to 0%. Ordinary steel sleepers cannot solve the gradual slope and height difference. If the change is poor, the hanging basket cannot always be constructed in a horizontal state.

Ordinary hanging baskets always run straight along the longitudinal axis of the box beam during construction, and the formwork at the front end of the hanging basket is always consistent with the orientation of the box beam to be poured. Specifically, if the hanging basket moves forward from the box girder in Section 1 to the box girder in Section 2, the box girder in Section 3 can be poured, but at this time the rear anchor point of the hanging basket is still on the box girder in Section 1. That is to say, each forward movement of the hanging basket involves three sections of box beams at the front and rear: the rear anchor section box beam, the section box beam where the main frame is located, and the section box beam to be poured. Since these three sections of box girders are all on the same axis, they can be casted one section at a time, all the way to the end. But the arc box girder is different. The central axes of these three box girder sections do not match, forming three different angles. As a result, after the hanging basket moved forward from the box girder in Section 1 to the box girder in Section 2, the formwork in front was deviated from the orientation of the box girder in Section 3 to be poured. The hanging basket needed to be shifted laterally to make the formwork and the box girder in Section 3 to be poured. The orientation of the cast section box beams must be consistent, but this offset causes a deviation between the rear anchor point of the hanging basket and the rear anchor hole reserved on the No. 1 section box beam, and the lateral deviation here needs to be corrected. For this reason, only by solving the positional relationship between the hanging basket and the three box beams and the height difference between the left and right main frames can normal construction be ensured. The current hanging basket has the following defects:

1. The front sliding seat is an integral structure. Its upper part is connected with the middle fulcrum seat of the main truss. The lower part is stuck on the walking track through a pair of rollers, slides forward and bears the gravity of the concrete box beam. If the hanging basket is to be deflected, the front sliding seat is the corner point (inflection point) where the entire main component deflects. Since the distance between the pair of rollers on the front sliding seat and the running track is very small (about 10mm), the deflection of the hanging basket will be limited by this distance, and the main truss cannot rotate significantly, so it cannot meet the construction requirements. .

2. The anti-lock wheel traveling device is also an integral structure and is connected to the rear end of the main truss. Its four rollers are also stuck on both sides of the web of the walking track and are sandwiched between the upper and lower panels of the walking track to prevent the hanging basket from overturning and moving forward. However, it cannot move left and right laterally and the orientation of the main truss cannot be adjusted. .

3. The walking track of the hanging basket is a box structure, and its length is generally consistent with the length of the box beam section. The anchor point with the box beam section is located at the bottom of the box room. The space is narrow and the nuts are inconvenient to tighten. In addition, since the longitudinal span of the hanging basket is more than 5m, there are always two short rails riding on the bottom of the hanging basket. Every time the walking track is moved forward, each walking rail must be connected in front before moving, and both Relying on manual handling and docking is time-consuming and laborious.

Contents of the invention

The object of the present invention is to overcome the shortcomings of the prior art and provide a hanging basket for cantilever casting of continuous beams with small curvature radius, which solves the problem of the hanging basket being able to rotate horizontally around the front sliding seat, the lateral offset problem of the hanging basket and the The problem of forward movement of the walking track; it can be used not only for the construction of conventional large-span cast-in-place continuous beam structures, but also for the construction of any one-way ultra-high balance, arc-turning large-span cast-in-place continuous beams, and has a wider scope of application.

The object of the present invention is achieved as follows: a hanging basket for cantilever casting of continuous beams with small curvature radius, including a main frame, a walking system, an anchoring system, a bottom mold system, a formwork system, a suspension system and a safety protection system;

The main frame includes two triangular main trusses, top beams and cross-links with the same structure; each main truss consists of a truss main beam, a vertical rod, a front diagonal rod and a rear diagonal rod; the front end, middle part and rear part of the truss main beam are The rear ends are respectively connected to the front end of the front inclined rod, the lower end of the vertical rod and the rear end of the rear inclined rod through the front node seat, the middle fulcrum seat and the rear anchor seat; the upper end of the vertical rod is respectively connected to the front inclined rod through the top node seat. The rear end is connected to the front end of the rear diagonal rod; the top cross beam is connected between the front node seats of the two main trusses; the horizontal connection is connected between the vertical rods of the two main trusses;

The walking system includes two walking rails, a sliding mechanism and a walking mechanism; the sliding mechanism includes two front sliding seats installed between the two walking rails and the middle fulcrum seats of the two main trusses in one-to-one correspondence; The traveling mechanism includes two counter-pulling traveling devices installed between the two traveling rails and the rear anchor seats of the two main trusses in one-to-one correspondence;

The two walking rails pass through the track pad beam and the rail beam respectively and are laid on the top surface of the box girder section corresponding to the spacing between the two main trusses; each walking rail includes two I-shaped beams arranged in parallel and with a length of 10 meters. Steel and a number of transverse connecting beams connected at intervals between two I-beams;

Each front sliding seat includes a front sliding seat pad, two front sliding seat height adjustment blocks, a front sliding seat rotating shaft and a front sliding seat jack; wherein,

The front sliding seat pad is provided with an axis hole, two through holes and four square holes; the axis hole is opened in the center of the front sliding seat pad, and the two through holes are symmetrically opened on the left and right sides of the axis hole and spaced apart The spacing between the two I-beams of each walking track is the same, and four square holes are provided on the front and rear sides of the two perforations in one-to-one correspondence; there is also a hole on the top plate of the front sliding seat pad that is connected to the axis hole. Four waist-shaped connection holes are evenly distributed on the concentric circumferential line; the front sliding seat pad is installed on the lower part of the middle fulcrum seat through four bolts located in the four connection holes in one-to-one correspondence. on board;

The top plate of each front sliding seat height-adjusting block is also provided with a through hole and two square holes corresponding to the left or right side of the front sliding seat pad, and a screw rod is inserted into the through hole. A square tube is inserted into the two square holes, and the screw rod and the lower ends of the two square tubes are fixed on the bottom plate of the front slide height adjustment block; a block is provided on both sides of the bottom plate of each front slide height adjustment block. The plate forms an inverted U-shaped track slot; the two front sliding seat height adjustment blocks are respectively located at the lower left end and right lower end of the front sliding seat pad, and a screw rod and two square tubes are inserted into the front sliding seat pad. There is one through hole and two square holes on the left side of the block and one through hole and two square holes on the right side of the front slide block, and the screws on each front slide height adjustment block pass through the front slide block. The nut on the top surface of the height adjustment block is locked, and the two front slide height adjustment blocks each place the track slot on the top surface of the upper wing plate of the two I-beams of each walking track;

The front sliding seat rotating shaft is connected to the lower end of the middle fulcrum seat and inserted into the axis hole of the front sliding seat pad;

The front slide jack is installed between the top surface of the box beam section and the bottom surface of the pad connected to the lower end of the front slide shaft;

Each of the anti-locking wheel walking devices includes a transverse hanging rod, a rear support height adjustment block, two pull rods and two walking trolleys; wherein,

The transverse hanging rod is inserted into the transverse rod perforation provided on the rear anchor base;

The rear support height-adjusting block is composed of two side arms and a bottom and is U-shaped. The upper ends of the two side arms of the rear support height-adjusting block are respectively connected to both ends of the transverse hanging rod. The upper portions of the two side arms are A pull rod perforation is also coaxially provided, and a set of height-fixing holes are respectively provided on the left and right sides of the bottom of the rear support height-adjusting block. The distance between the two sets of height-fixing holes is consistent with the two I-beams of each walking track. corresponding to the spacing;

The two tie rods are each horizontally inserted into the tie rod through holes on both sides of the arms of the rear support height adjustment block and the tie rod through holes on both sides of the truss main beam, and are locked by nuts and limit screws;

Each traveling trolley includes an anti-locking wheel connecting rod, two anti-locking wheel hanging plates and two pairs of anti-locking wheel; a set of height adjustment holes are provided on the surface of the anti-locking wheel connecting rod; two anti-locking wheel hanging plates Each is welded on the left and right sides of the anti-locking wheel connecting rod; the two pairs of anti-locking wheels are each installed on the lower opposite surface of the two anti-locking wheel hanging plates; the two walking trolleys are each inserted into the rear support height adjustment block through a The pins in the height-adjusting holes on the left and right sides and the height-adjusting holes on the connecting rods of the anti-locking wheels are connected to the height-adjusting block of the rear support. The two pairs of anti-locking wheels of the two traveling trolleys are respectively stuck on the two workpieces of each walking track. The two sides of the web of the word steel are pressed against the bottom surface of the upper wing plate.

The above-mentioned hanging basket for cantilever casting of continuous beams with small curvature radius, wherein the walking system also includes a pushing mechanism, the pushing mechanism includes two installed on the rear ends of the two front sliding seats and two walking rods in one-to-one correspondence. The power device between the tracks; each power device includes a reaction seat, a traveling slide block and a traction jack; the reaction seat includes a seat beam, two deck plates and a rail lifting plate; the seat beam is made of front channel steel and the rear channel steel are welded leg-to-leg; the two deck plates are connected to the front surfaces of both ends of the seat beam and the two described Between the rear end faces of the front slide height adjustment block, a T-shaped slot is provided in the middle of the bottom surface of the two deck plates and is respectively clamped on the two I-beams of each walking track; the rail lifting rod Welded on the rear surface of the middle part of the seat beam; the running slider includes a slider body, two blocking pins, two slider ear plates and a pair of hinge plates; the bottom surface of the slider body is spaced apart from each walking track Two T-shaped buckle grooves are provided at corresponding intervals between the two I-beams. A pair of hinge seat plates are protruding from the top surface of the slider body corresponding to the two buckle grooves, and between the pair of hinge seat plates An ear plate slot is opened that communicates with the top of the buckle slot. Each pair of hinge base plates is provided with a reaming hole and a front blocking hole symmetrically located above the front side of the reaming hole and a rear blocking hole located above the rear side. The block body is fastened to the two I-beams of each walking track through two buckle grooves; the two blocking pins are inserted into the front blocking holes and the rear blocking holes on the two pairs of hinge base plates; the two slide block lugs The plates are respectively located in the two ear plate grooves and between the two blocking pins. The upper parts of the two slider ear plates are respectively fixed on both ends of a steel pipe. A hinge is provided at the lower part of each slider ear plate. The holes are each hinged between a pair of hinge seat plates on the slider body through hinge axes, so that the bottom surface of the slider ear plate is flush with the bottom surface of the ear plate groove; the upper part of the pair of hinge plates is fixedly sleeved on the middle part of the steel pipe ; The bottom surface of the traction jack is hinged on the rail lifting plate of the reaction seat, and the end of the ejector rod of the traction jack is hinged on the lower part of a pair of hinge plates on the traveling slide block.

The above-mentioned hanging basket for cantilever casting of continuous beams with small curvature radius, wherein the anchoring system includes two sets of anchoring mechanisms located in one-to-one correspondence between the two rear anchor seats of the two main trusses and the box beam sections; Each set of anchoring mechanisms includes two pairs of rear anchor rods pre-embedded on the top plate of the box girder section and two rear anchor pole beams pressed on the rear anchor seats and each connected to the two pairs of rear anchor rods.

The hanging basket of the present invention for cantilever casting of continuous beams with small curvature radius has the following characteristics:

1. Solved the problem that the hanging basket can rotate horizontally around the front sliding seat: connect the middle fulcrum seat of the two main trusses and the middle of the front sliding seat through the rotating shaft, and set the front sliding seat jack at the lower end of the rotating shaft, which can be used according to the construction requirements. , so that the entire hanging basket can not only deflect horizontally around the front sliding seat to achieve lateral deflection, but also automatically adjust the height difference between the two main trusses of the hanging basket;

2. Solve the problem of lateral offset of the hanging basket: the anti-locking wheel hanger is formed into a square frame, and a tie rod hole is opened on both sides of the anti-lock wheel hanger, and a tie rod hole is set in each of the two tie rod holes. A tie rod drives the main truss to move laterally through the left and right movement of the tie rod, ensuring that the lateral position of the hanging basket meets the design requirements; and two pairs of counter-detent wheels are provided on the two walking trolleys of each counter-detent wheel walking device, so that each Two anti-locking wheels are mounted on both sides of the two I-beam webs of the walking track. Compared with the existing hanging basket, only a pair of anti-locking wheels are provided on the walking trolley, which increases the overall anti-overturning strength of the hanging basket. . In addition, a height locking device is set between the two traveling trolleys and the anti-lock wheel hanger to meet the requirements for the overall horizontal position of the hanging basket;

3. Solve the problem of forward movement of the walking track: the walking track uses two 10m long 320 I-beams side by side as each walking track, and the two I-beams are connected with connecting beams, so that the two I-beams can Installing the front slide jack not only increases the space between the walking rails, enhances the stability of the walking rails, but also allows the walking rails to be automatically relocated through the transverse hydraulic jacks.

In summary, the hanging basket of the present invention for cantilever casting of continuous beams with small curvature radius is easy to operate and has strong flexibility. It can be used in the construction of conventional large-span cast-in-place continuous beam structures and can meet the requirements of any one-way ultra-high beam structure. The construction of high-balance, arc-turned large-span cast-in-place continuous beams has a wider range of applications and greatly improves construction efficiency.

Description of the drawings

Figure 1 is a front view of the hanging basket used for cantilever casting continuous beams with small curvature radius according to the present invention;

Figure 2 is a side view of the hanging basket used for cantilever casting continuous beams with small curvature radius according to the present invention;

Figure 3 is a front view of the front sliding seat in the hanging basket of the present invention;

Figure 4 is a side view of the front sliding seat in the hanging basket of the present invention (removing the front sliding seat jack);

Figure 5 is a top view of the front sliding seat in the hanging basket of the present invention;

Figure 6 is a top view of the front sliding seat in the hanging basket of the present invention when it rotates to the extreme state;

Figure 7 is a front view of the anti-lock wheel walking device in the hanging basket of the present invention;

Figure 8 is a side view of the anti-pulling wheel walking device in the hanging basket of the present invention;

Figure 9 is a front view of the anti-lock wheel walking device in the hanging basket of the present invention after translation;

Figure 10 is a side view of the power device in the hanging basket of the present invention;

Figure 11 is a front view of the reaction seat in the hanging basket of the present invention;

Figure 12 is a front view of the traveling slider in the hanging basket of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Figures 1 to 12. The hanging basket of the present invention for cantilever casting of continuous beams with small curvature radius includes a main frame, a bottom mold system 81, a formwork system 82, a suspension system 9, a walking system, an anchoring system 80 and a safety Protection system.

The main frame includes two triangular main trusses 1, top beams 22 and cross-links 3 with the same structure; each main truss 1 consists of a truss main beam 10, a vertical rod 12, a front diagonal rod 11 and a rear diagonal rod 13; among them, the main truss The front, middle and rear ends of the beam 10 are respectively connected to the front end of the front diagonal bar 11, the lower end of the vertical bar 12 and the rear end of the rear diagonal bar 13 through the front node seat 14, the middle fulcrum seat 15 and the rear anchor seat 16; The upper end of 12 is connected to the rear end of the front diagonal bar 11 and the front end of the rear diagonal bar 13 respectively through the top node seat 120; the top cross beam 2 is connected between the front node seats 14 of the two main trusses 1; the cross link 3 is connected between the two main trusses 1. Between the vertical bars 12 of the main truss 1, the horizontal link 3 also connects the overhanging horizontal bars 31 and the overhanging long diagonal bars 32.

The distance from the middle fulcrum base 15 to the front node base 14 of the main truss 1 is 5.5 meters, the distance from the middle fulcrum base 15 to the rear anchor base 16 is 4.5 meters, the centerline height of the main truss 1 is 3.8 meters; the distance between the two main trusses 1 The main beam 10 of the truss, the vertical rod 12, the front inclined rod 11 and the rear inclined rod 13 are all made of two No. 25 channel steel legs spliced leg to leg, and each rod is connected by a pin.

The bottom formwork system 81 includes the bottom cross beam, the bottom longitudinal beam and the bottom formwork; the bottom cross beam is made of double-jointed No. 36 I-beam steel, the bottom longitudinal beam A is made of double-jointed No. 32 I-beam steel, and the bottom longitudinal beam B is made of No. 32 I-beam steel. Side longitudinal beam A is made of No. 14 channel steel. The bottom longitudinal beam and the bottom cross beam are connected and fixed with bolts.

The formwork system 82 includes an outer formwork, an outer formwork support 821, an inner formwork and an inner formwork frame 822. The outer formwork and the outer formwork bracket 821 are both welded by channel steel, and the panel of the outer formwork is a 5mm thick steel plate. The inner formwork is assembled and welded by 5mm thick steel plates, and the inner formwork frame 822 is welded by channel steel. Since the cross slope of the box girder and the width of the web will change, the angle-adjustable formwork is made for the outer and inner formwork. The inner mold frame 822 is made in an angle-adjustable and transverse-width-adjustable form, so that it can be used after the web plate of the box girder is changed.

The suspension system 9 includes front and rear suspenders of the bottom mold platform, front and rear suspenders of the outer mold running beam, front and rear suspenders of the inner mold running beam, pad beams, suspender pole beams 91 and screw jacks. The suspension system 9 is used to suspend the bottom formwork platform, outer formwork and inner formwork, and transfer the self-weight of the bottom formwork platform, outer formwork and inner formwork, the weight of the concrete in the box girder section and other construction loads to the main frame and the completed box. On the beam section. There are 6 lifting points on each of the front and rear beams of the bottom formwork. The lifting points are all made of Φ32 precision-rolled threaded steel bars. The front end of the bottom form platform is suspended on the top beam 22 of the hanging basket. The top beam 22 is provided with an adjustment device consisting of a suspender pole beam and a screw jack, so that the elevation of the bottom form can be adjusted arbitrarily. The rear end of the bottom formwork platform is suspended from the bottom plate and flange plate of the box girder section. The front and rear booms of the outer mold walking beam and the front and rear booms of the inner mold walking beam are all made of a single Φ32 precision-rolled threaded steel bar.

The traveling system includes two traveling rails 4, a sliding mechanism, a traveling mechanism, a pushing mechanism, two inner mold traveling beams 75 and two outer mold traveling beams 75.

Two walking rails 4 pass through the track pad beam 42 and the rail beam 43 respectively and are laid on the top surface of the box girder section corresponding to the spacing between the two main trusses 1; each walking rail 4 includes two parallel rails and is 10 meters in length. The I-beam 40 and a plurality of transverse connecting beams 41 are spacedly connected between the two I-beams 40.

The sliding mechanism includes two front sliding seats 5 installed between the two walking rails 4 and the middle fulcrum seats 15 of the two main trusses in one-to-one correspondence.

Each front sliding seat 5 includes a front sliding seat pad 51, two front sliding seat height adjustment blocks 52, a front sliding seat rotating shaft 53 and a front sliding seat jack 54 (see Figures 3, 4 and 5); wherein,

The front sliding seat pad 51 is provided with an axis hole, two through holes and four square holes; the axis hole is opened in the center of the front sliding seat pad, and the two through holes are symmetrically opened on the left and right sides of the axis hole and are spaced apart from each other. The distance between the two I-beams 40 of the walking track 4 is the same, and the four square holes are located on the front and rear sides of the two perforations one by one; the top plate of the front sliding seat pad 51 also has a circumferential line concentric with the axis hole. Four waist-shaped connection holes 510 are evenly distributed on the top; the front sliding seat pad 51 is installed on the connection plate provided at the lower part of the middle fulcrum seat 15 through four bolts provided in the four connection holes 510 in one-to-one correspondence;

The top plate of each front slide height adjustment block 52 is also provided with a through hole and two square holes corresponding to the left or right side of the front slide block 51, and a screw rod 520 is inserted in the through hole. , a square tube 522 is inserted into the two square holes, the screw 520 and the lower ends of the two square tubes 522 are fixed on the bottom plate of the front slide height adjustment block 52; the bottom plate of each front slide height adjustment block 52 A baffle 523 is provided on both sides to form an inverted U-shaped track slot; two front slide height adjustment blocks 52 are respectively provided at the lower left end and right lower end of the front slide block 51 and respectively connect a screw 520 and two The root square tube 522 is inserted into one perforation and two square holes opened on the left side of the front sliding seat pad 51 and one perforation and two square holes opened on the right side of the front sliding seat pad 51, and each front sliding seat is adjusted. The screws 521 on the high block 52 are locked by the nuts 521 located on the top surface of the front slide height adjustment block 51. The two front slide height adjustment blocks 52 respectively locate the track slots on two of the walking rails 4. On the top surface of the upper wing plate of I-beam 40;

The front sliding seat rotating shaft 53 is connected to the lower end of the middle fulcrum seat 15 and inserted into the axis hole of the front sliding seat pad 51;

The front sliding seat jack 54 is installed between the top surface of the box beam section and the bottom surface of the pad connected to the lower end of the front sliding seat rotating shaft 53.

The traveling mechanism includes two counter-pulling traveling devices 7 installed between the two traveling rails 4 and the rear anchor seats 16 of the two main trusses 1 in one-to-one correspondence.

Each anti-locking wheel walking device 7 includes a transverse hanging rod 71, a rear support height adjustment block 72, two pull rods 73 and two walking trolleys 74 (see Figures 7 and 8); wherein,

The transverse hanging rod 71 is inserted into the cross rod perforation opened on the rear anchor base 16;

The rear support height-adjusting block 72 is U-shaped and is composed of two side arms and a bottom. The upper ends of the two side arms of the rear support height-adjusting block 72 are respectively connected to both ends of the transverse hanging rod 71 to form a square-shaped reverse buckle. Hanger, the upper part of the two arms of the rear support height adjustment block 72 is also coaxially provided with a tie rod through hole 720; the left and right sides of the bottom of the rear support height adjustment block 72 are each provided with a set of height fixing holes 721 , the spacing between the two sets of height-fixing holes 721 corresponds to the spacing between the two I-beams 40 of each walking track 4;

The two tie rods 73 are each horizontally inserted into the tie rod through holes on both sides of the rear support height adjustment block 72 and the tie rod through holes on both sides of the truss main beam 10, and are locked by nuts 731 and limit screws 732. ;

Each traveling trolley 74 includes an anti-locking wheel connecting rod 741, two anti-locking wheel hanging plates 742 and two pairs of anti-locking wheels 743; a set of height adjustment holes 740 are provided on the surface of the anti-locking wheel connecting rod 741; The buckle wheel hanging plates 742 are respectively welded to the left and right sides of the counter buckle wheel connecting rod 741; the two pairs of counter buckle wheels 743 are respectively installed on the lower opposite surfaces of the two counter buckle wheel hanging plates 742; the two walking trolleys 74 each pass through a The pins inserted into the height-adjusting holes on the left and right sides of the rear support height-adjusting block 72 and the height-adjusting holes on the reverse buckle wheel connecting rod 741 are connected to the rear support height-adjusting block 72, and the two pairs of opposite sides of the two walking trolleys 74 The catch wheels 743 are respectively stuck on both sides of the webs of the two I-beams 40 of each walking track 4 and are pressed against the bottom surface of the upper wing plate.

The pushing mechanism includes two power units installed in one-to-one correspondence between the rear ends of the two front sliding seats 5 and the two traveling rails 4; each power unit includes a reaction base 61, a traveling slide block 62 and a traction jack 60 (See Figure 10, Figure 11 and Figure 12).

Each reaction seat 61 includes a seat beam 610, two card seat plates 611 and a rail lifting plate 612; wherein, the seat beam 610 is welded from front channel steel and rear channel steel in a leg-to-leg manner; the two card seats The plates 611 are respectively connected between the two front surfaces of the seat beam 610 and the rear end surfaces of the two front slide height adjustment blocks 52 in a manner corresponding to the distance between the two I-beams 40 of each walking track 4. A T-shaped slot is provided in the middle of the bottom surface of the base plate 611 and is respectively clamped on the two I-beams 40 of each walking track 4; the rail lifting plate 612 is welded to the middle rear surface of the seat beam 610.

The running slider 62 includes a slider body 620, two blocking pins, two slider ear plates 625 and a pair of hinge plates 626; wherein, the bottom surface of the slider body 620 is spaced apart from the two I-shaped poles of each walking rail 4. The steel 40 is provided with two T-shaped buckle grooves 621 at corresponding intervals. A pair of hinge seat plates 622 are respectively protruded on the top surface of the slider body 620 corresponding to the two buckle grooves 621, and between the pair of hinge seat plates 622 There is an ear plate groove connected with the top of the buckle groove 621; each pair of hinge base plates 622 is provided with a reaming hole 623 and a front blocking hole 62a symmetrically located above the front side of the reaming hole 623 and a reaming hole 62a located above the rear side. The rear blocking hole 62b, the slider body 620 is buckled on the two I-beams 40 of each walking track 4 through the two buckling grooves 621; the two blocking pins are respectively inserted into the front blocking on the two pairs of hinge base plates 622. In the hole 62a and the rear blocking hole 62b; the two slider ear plates 625 are respectively located in the two ear plate grooves and between the two blocking pins. The upper parts of the two slider ear plates 625 are respectively fixed in a At both ends of the steel pipe 624, a reamed hole is opened in the lower part of each slider ear plate 625 and each is hinged between a pair of hinge base plates 622 on the slider body 620 through a hinge axis, so that the bottom surface of the slider ear plate 625 is in contact with the hinge plate 625. The bottom surface of the ear plate groove is flat; the upper parts of a pair of hinge plates 626 are fixedly sleeved on the middle part of the steel pipe 624.

The bottom surface of the traction jack 60 is hinged on the rail lifting plate 612 of the reaction seat 61 , and the end of the push rod of the traction jack 60 is hinged on the lower part of a pair of hinge plates 626 on the traveling slide block 62 .

Two inner mold walking beams 75 are arranged in the inner mold frame 822. The front ends of the two inner mold walking beams 75 are suspended on the top beam 2 through the sliding beam spreader and the front suspender. The rear ends of the two inner mold walking beams 75 are The end passes through the reserved hole on the top plate of the cast box beam and is suspended on the cast box beam segment through the sliding beam spreader and the rear hanger.

The two outer mold walking beams 76 are arranged in the outer mold bracket 821. The front ends of the two outer mold walking beams 76 are suspended on the top beam 2 through the sliding beam spreader and the front suspension rod. The rear ends of the two outer mold walking beams 76 are It is suspended on the cast box beam segments through the reserved holes in the top plate of the cast box beam and through the sliding beam spreader and the rear hanger.

The anchoring system 80 includes two sets of anchoring mechanisms arranged in one-to-one correspondence between the two rear anchor seats 16 of the main frame and the box girder section; each group of anchoring mechanisms includes two pairs of rear anchors pre-embedded on the top plate of the box girder section. rod and two rear anchor pole beams that are pressed on the rear anchor seat 16 and are respectively connected to two pairs of rear anchor rods. The function of the anchoring system 80 is to balance the overturning moment generated by the hanging basket when pouring concrete to ensure the safety of the hanging basket construction. The force transmission path of the anchoring system 80 is the rear anchor seat 16 → the rear anchor pole beam → the rear anchor rod → the roof wing of the box beam section.

The safety protection system includes the main frame protection system, the bottom mold protection system, the bottom mold repair platform, the outer mold repair platform and the bottom bracket protection. The safety protection system is used to protect construction workers and normal traffic under construction of continuous girder bridges.

When the hanging basket of the present invention is used for cantilever casting of continuous beams with small curvature radius and needs to be offset according to construction requirements, the two front sliding seats 5 are first deflected using the middle fulcrum of the hanging basket as the inflection point, and then the two front sliding seats 5 are deflected. For the fulcrum, the two anti-locking wheel traveling devices 7 are offset.

When deflecting the two front sliding seats 5, first loosen the four bolts on the top plates of the two front sliding seats 5 that are connected to the lower connecting plate of the middle fulcrum seat 15, and pass the two bolts under the two front sliding seats 5. The front slide jack 54 pushes the main frame away from the walking track 4, and then uses the front slide shaft 53 to make the front slide pad 51 rotate with the two front slide height adjustment 52 along with the walking track 4 to adjust the walking track. 4; the two main trusses 1 can also rotate together with the middle fulcrum seat 15 through the front slide shaft 53 to achieve lateral offset and adjust the orientation of the main frame (see Figure 6). After the offset is in place, the low-side main truss adjusts the height position through the front slide jack 54 located under the main truss on that side, and then uses the nuts 521 on the screw rods 520 on both sides of the front slide jack 54 to lock the height position, thus solving the problem of two problems. The height difference problem of the main truss 1 causes the front slide jack 54 and the screw rod 520 to simultaneously bear the gravity of the cast-in-place box girder section.

When the two anti-locking wheel walking devices 7 are offset, use the tie rod 73 on one side of the two anti-locking wheel walking devices 7 to pull the truss main beam 10 to move the main frame to one side, and then use the other side pull rod 73 to lock the position. In this way, the entire set of hanging baskets can use the two front sliding seats 5 as fulcrums to laterally translate the tail of the hanging basket at the anti-lock wheel walking device 7 to achieve the overall deflection of the hanging basket. In addition, two pairs of anti-lock wheels 743 are respectively provided on the two traveling trolleys 74 of each anti-lock wheel traveling device 7, so that two pairs of anti-lock wheels 743 are clamped on both sides of the webs of the two I-beams 40 of each walking track 4. The anti-locking wheels 743 are only provided with a pair of anti-locking wheels on the walking trolley of the existing hanging basket, which increases the anti-overturning strength of the hanging basket as a whole. In addition, a height locking device is provided between the two traveling trolleys 74 and the reverse wheel hanger (rear support height adjustment block 72). After the main frame is adjusted to a suitable height, insert the pin shaft into the height-fixing hole 721 on the counter-lock wheel hanger and the height-adjusting hole on the traveling trolley 74 to lock the position (see Figure 9).

The hanging basket used for cantilever casting continuous beams with small curvature radius of the present invention uses two No. 32 I-beams 40 side by side as the main body of each walking track 4, and the two I-beams 40 are connected by a transverse connecting beam 41. Enlarging the space in the middle of the walking track 4 not only enhances the stability of the hanging basket, but also allows the front slide jack 54 to be placed in the middle of the two I-beams 40. In addition, the rail-pressing beam 43 is used to press on the top surface of the walking rail 4, so that the walking rail 4 can be anchored to the maximum extent. The walking track 4 with a length of one box girder section is also changed into a walking track with a length of two box girder sections (10m), so that the walking track 4 can be connected without manual handling.

After a box girder section is poured, the walking track and hanging basket need to be pushed forward to the top surface of the next box girder section through a pushing mechanism. Move the walking track 4 first, and then move the hanging basket.

When pushing the walking track 4, first use two front slide jacks 54 to push the main frame away from the walking track 4, remove the rail pressure beam 43, loosen the anchoring system, and separate the pressure between the rear anchor seat 16 of the hanging basket and the walking track 4. tight state. Pull out the blocking pin in the front blocking hole 62a to control the retraction of the push rod of the traction jack 60. Driven by the hinge plate 626 and the steel pipe 624, the bottoms of the two slider ear plates 625 are tilted forward and each is stuck on the walking track 4. The top surfaces of the two I-beams 40 prevent the traveling slide block 62 from sliding on the traveling track 4. The push rod of the traction jack 60 is controlled to continue to retract, and the traveling track 4 can be pulled forward until the traction jack 60 is The ejector rod is fully retracted, and then the ejector rod of the traction jack 60 is controlled to extend, so that the two slider ear plates 625 return to the vertical position, and then the blocking pin is inserted into the front blocking hole 62a, so that the traveling slider 62 moves upward on the traveling track 4 Slide backward until the push rod of the traction jack 60 is fully extended. The above is a walking cycle of the walking track 4. Until the walking rail 4 is pushed forward to the top surface of the next box girder section, then the walking rail 4 is appropriately deflected and adjusted to be consistent with the orientation of the box girder section to be poured.

When pushing the hanging basket, first pull out the blocking pin in the rear blocking hole 62b, and then control the ejector rod of the traction jack 60 to extend through the oil pump station. Driven by the hinge plate 626 and the steel pipe 624, the bottom surfaces of the two slider ear plates 625 are moved backward. The two I-beams 40 are respectively stuck on the top surface of the walking track 4, so that the walking slide block 62 cannot slide on the walking track 4. The push rod of the traction jack 60 is controlled to continue to extend, and the reaction force can be passed. The seat 61 pushes the hanging basket forward until the ejector rod of the traction jack 60 is fully extended; then controls the ejector rod of the traction jack 60 to retract, so that the two slider ear plates 625 return to vertical, and then insert the blocking pin into the rear blocking hole 62b , so that the traveling slide block 62 slides forward on the traveling track 4 until the push rod of the traction jack 60 is fully retracted, which is a traveling cycle of the hanging basket.

The above embodiments are only for illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalents The technical solution should also fall within the scope of the present invention and should be defined by each claim.

Claims (3)

1. A hanging basket for cantilever casting of a continuous beam with a small curvature radius comprises a main framework, a traveling system, an anchoring system, a bottom die system, a template system, a hanging system and a safety protection system;

the main framework comprises two triangular main trusses, top cross beams and cross links, wherein the triangular main trusses, the top cross beams and the cross links are identical in structure; each truss main truss comprises truss main beams, vertical rods, front inclined rods and rear inclined rods; the front end, the middle part and the rear end of the truss girder are respectively connected with the front end of the front diagonal rod, the lower end of the vertical rod and the rear end of the rear diagonal rod through a front node seat, a middle fulcrum seat and a rear anchor seat; the upper end of the vertical rod is respectively connected with the rear end of the front inclined rod and the front end of the rear inclined rod through a top node seat; the top cross beam is connected between the front node bases of the two main trusses; the transverse connection is connected between the vertical rods of the two main trusses;

the traveling system comprises two traveling rails, a sliding mechanism and a traveling mechanism; the sliding mechanism comprises two front sliding seats which are arranged between the two walking rails and the middle pivot seats of the two main trusses in a one-to-one correspondence manner; the travelling mechanism comprises two back buckling wheel travelling devices which are arranged between the two travelling rails and the rear anchor seats of the two main trusses in a one-to-one correspondence manner; it is characterized in that the method comprises the steps of,

the two travelling rails are paved on the top surface of the box girder section through a rail pad girder and a rail pressing girder respectively and correspond to the distance between the two main trusses; each walking track comprises two I-steel beams which are arranged in parallel and have the length of 10 meters and a plurality of transverse connecting beams which are connected between the two I-steel beams at intervals;

each front sliding seat comprises a front sliding seat cushion block, two front sliding seat height adjusting blocks, a front sliding seat rotating shaft and a front sliding seat jack; wherein,

the front slide seat cushion block is provided with a shaft hole, two through holes and four square holes; the axle hole is arranged in the center of the front slide seat cushion block, the two through holes are symmetrically arranged on the left side and the right side of the axle hole, the distance between the two through holes is the same as that between the two I-shaped steels of each walking track, and the four square holes are arranged on the front side and the rear side of the two through holes in a one-to-one correspondence manner; four waist-shaped connecting holes are uniformly distributed on a circumferential line concentric with the shaft hole on the top plate of the front slide seat cushion block; the front slide seat cushion block is arranged on a connecting plate arranged at the lower part of the middle pivot seat through four bolts which are arranged in four connecting holes in a one-to-one correspondence manner;

a through hole and two square holes are formed in the top plate of each front slide seat height-adjusting block, wherein the through hole and the two square holes are formed in the top plate of each front slide seat height-adjusting block, a screw rod is inserted into each through hole, a square pipe is inserted into each square hole, and the lower ends of each screw rod and each square pipe are fixed on the bottom plate of each front slide seat height-adjusting block; two sides of the bottom plate of each front sliding seat height-adjusting block are respectively provided with a baffle plate to form an inverted U-shaped track clamping groove; the two front slide seat height-adjusting blocks are respectively arranged at the left lower end and the right lower end of the front slide seat cushion block, a screw rod and two square tubes are respectively inserted into a through hole and two square holes which are formed in the left side of the front slide seat cushion block and a through hole and two square holes which are formed in the right side of the front slide seat cushion block, the screw rod on each front slide seat height-adjusting block is locked through a nut positioned on the top surface of the front slide seat height-adjusting block, and the two front slide seat height-adjusting blocks respectively seat rail clamping grooves on the top surfaces of upper wing plates of two I-shaped steels of each walking rail;

the front slide seat rotating shaft is connected to the lower end of the middle pivot seat and is inserted into the shaft hole of the front slide seat cushion block;

the front sliding seat jack is arranged between the top surface of the box girder section and the bottom surface of a backing plate connected with the lower end of the front sliding seat rotating shaft;

each back-buckling wheel traveling device comprises a transverse hanging rod, a rear support heightening block, two pull rods and two traveling trolleys; wherein,

the transverse hanging rod is arranged in a cross rod perforation arranged on the rear anchor seat in a penetrating way;

the rear support heightening block is U-shaped and consists of two side arms and a bottom, the upper ends of the two side arms of the rear support heightening block are respectively connected with the two ends of the transverse hanging rod, the upper parts of the two side arms are also coaxially provided with a pull rod perforation, the left side and the right side of the bottom of the rear support heightening block are respectively provided with a group of height fixing holes, and the distance between the two groups of height fixing holes corresponds to the distance between two I-shaped steels of each walking track;

the two pull rods are respectively horizontally penetrated in the pull rod through holes on the two side arms of the rear support heightening block and the pull rod through holes on the two side faces of the truss girder and are locked by nuts and limit screws;

each travelling trolley comprises a reverse buckling wheel connecting rod, two reverse buckling wheel hanging plates and two pairs of reverse buckling wheels; a group of height-adjusting holes are formed in the surface of the back-buckling wheel connecting rod; the two back-buckling wheel hanging plates are respectively welded on the left side surface and the right side surface of the back-buckling wheel connecting rod; the two pairs of reverse buckling wheels are respectively arranged on the opposite surfaces of the lower parts of the two reverse buckling wheel hanging plates; the two traveling trolleys are respectively connected to the rear support heightening block through a bolt inserted into the left and right side heightening holes of the rear support heightening block and the heightening holes on the back buckling wheel connecting rod, and the two pairs of back buckling wheels of the two traveling trolleys are respectively clamped on two sides of the web plates of the two I-shaped steels of each traveling rail and are propped against the bottom surface of the upper wing plate.

2. The cradle for cantilever casting of a continuous beam of small radius of curvature according to claim 1, wherein the travelling system further comprises a pushing mechanism comprising two power units mounted in one-to-one correspondence between the rear ends of the two front carriages and the two travelling rails; each power device comprises a counter-force seat, a walking slide block and a traction jack; the counterforce seat comprises a seat beam, two clamping seat plates and a lifting rail plate; the seat beam is formed by welding a front channel steel and a rear channel steel in a leg-to-leg manner; the two clamping seat plates are respectively connected between the front surfaces of the two ends of the seat beam and the rear end surfaces of the two front sliding seat height adjusting blocks in a mode that the distance corresponds to the distance between the two I-shaped steel bars of each walking rail, and the middle parts of the bottom surfaces of the two clamping seat plates are respectively provided with a T-shaped clamping groove and are respectively clamped on the two I-shaped steel bars of each walking rail; the rail lifting plate is welded on the rear surface of the middle part of the seat beam; the travelling slide block comprises a slide block body, two blocking pins, two slide block lug plates and a pair of hinge plates; the bottom surface of the sliding block body is provided with two T-shaped buckling grooves in a mode that the interval corresponds to the interval between two I-shaped steels of each walking track, a pair of hinge support plates are respectively arranged on the top surface of the sliding block body in a protruding mode corresponding to the two buckling grooves, an ear plate groove communicated with the top of the buckling groove is arranged between the pair of hinge support plates, each pair of hinge support plates is correspondingly provided with a hinge hole and a front blocking hole symmetrically positioned above the front side of the hinge hole and a rear blocking hole symmetrically positioned above the rear side of the hinge hole, and the sliding block body is buckled on the two I-shaped steels of each walking track through the two buckling grooves; the two blocking pins are respectively inserted into the front blocking holes and the rear blocking holes on the two pairs of hinge plates; the two sliding block lug plates are respectively arranged in the two lug plate grooves and are positioned between the two blocking pins, the upper parts of the two sliding block lug plates are respectively fixedly sleeved at two ends of a steel pipe, the lower parts of the two sliding block lug plates are respectively provided with a hinge hole and are respectively hinged between a pair of hinge support plates on the sliding block body through hinge shafts, so that the bottom surfaces of the sliding block lug plates are leveled with the bottom surfaces of the lug plate grooves; the upper parts of the pair of hinged plates are fixedly sleeved in the middle of the steel pipe; the bottom surface of the traction jack is hinged on the lifting rail plate of the counter-force seat, and the ejector rod end head of the traction jack is hinged with the lower parts of a pair of hinged plates on the walking slide block.

3. The cradle for cantilever casting of small radius of curvature continuous beams of claim 1, wherein the anchoring system comprises two sets of anchoring mechanisms disposed in one-to-one correspondence between two rear anchors of two main trusses and a box girder segment; each group of anchoring mechanism comprises two pairs of rear anchor rods pre-buried on the top plate of the box girder section and two rear anchor shoulder pole girders pressed on the rear anchor seats and respectively connected with the two pairs of rear anchor rods.