A single-side widened unbalanced cantilever box beam hanging basket and construction method thereof

Abstract

The present invention discloses a unilateral widening unbalanced weight cantilever box girder hanging basket, comprising a main truss, an anchoring system, a suspension system, a traveling mechanism, a bottom mold system and an inner mold system, wherein the main truss comprises a truss beam, a lower connecting rod, a vertical rod and a pull rod, the suspension system comprises a front suspension mechanism and a rear suspension mechanism, and the anchoring system comprises a track anchoring mechanism and a main truss rear anchoring mechanism. The present invention improves an ordinary hanging basket, and cooperates with a hanging cage by setting a transverse adjustment slot in the suspension system; sets a movable rear anchoring mechanism and sets a transverse adjustment slot on the track anchoring beam; in the traveling mechanism, the trolley connecting seat is connected to the rear distribution beam through transverse sliding, and the front fulcrum support is connected to the front distribution beam through transverse sliding, so that the hanging basket of the present invention can flexibly adjust the fulcrum position of the widening side of the box girder during the segment casting and advancement process, so that the fulcrum always falls on the center of the web of the widening side, and also ensures that the center of gravity of the box girder is always at the center of the hanging basket, so as to ensure that the forces on both sides of the hanging basket are balanced.

Description

Technical Field

[0001] The invention belongs to the technical field of box girder construction, and in particular relates to a unilaterally variable-width unbalanced-weight cantilever box girder hanging basket assembly and a construction method. Background Art

[0002] In my country's bridge construction, it is often affected by adverse natural conditions such as terrain and rivers, and it is necessary to cross deep water, valleys, and three-dimensional transportation. The hanging basket has the advantages of light structure, large anchoring safety factor, high rigidity, small deformation, strong wind resistance, simple and convenient assembly, and fast construction progress. It is widely used in bridge construction.

[0003] In ordinary hanging basket suspended pouring construction, the weight of the beam sections at both ends of the bridge is equal and the width of the box beam is equal. During construction, high-quality rolled threaded steel bars (or vertical prestressed high-quality rolled threaded steel bars) are embedded in the web as track anchors and rear anchor points, and the basket load is transferred to the web of the box beam through the track. When moving the basket, hydraulic jacks are used on both sides to push the basket synchronously in a straight line, so that the basket is gradually pushed into place.

[0004] When designing the Banco Bay main bridge across the lagoon section of the Abidjan Fourth Bridge Project, the double spans of the first to seventh spans were designed as variable-section continuous box girders of equal width, with a box girder width of 16.656m, and were constructed using ordinary hanging baskets. The width of the northern box girder of the eighth span widened from 16.656m to 18.688m, the width of the northern box girder of the ninth span widened from 18.688m to 20.529m, the width of the southern box girder of the eighth span widened from 16.656m to 18.322m, and the width of the southern box girder of the ninth span widened from 18.322m to 20.896m. When the width of the box girder changes, the width of the flange plate remains unchanged, the center of the outer web plate is offset in an oblique line (gradually offset inward in the direction of the small pier number, and gradually offset outward in the direction of the large pier number), and the width of the inner box gradually changes (gradually narrowing in the direction of the small pier number, and gradually widening in the direction of the large pier number). The P8 pier is designed as a variable-section continuous box girder with symmetrical casting at both ends of the unbalanced weight. If ordinary hanging baskets are used for construction, as the segments are cast and the hanging baskets move forward in a straight line, the outer hanging basket tracks will deviate from the web and press on the top plate of the box girder. The top plate of the box girder cannot bear the construction load of the hanging basket. At the same time, the center of gravity of the box girder will shift, which will cause the hanging basket to be overloaded, deformed, and unstable, posing a safety hazard. In addition, the longitudinal prestressed steel strands are located on both sides of the web. Since the center of the outer web is offset in an oblique line, the rear anchor point will gradually deviate from the center of the web during the forward movement of the hanging basket. On the one hand, the rear anchor point conflicts with the prestressed pipe. On the other hand, the rear anchor point is located at a thinner position of the box girder flange plate or top plate, and the force does not meet the requirements, which is also easy to cause local cracks in the top plate. Summary of the invention

[0005] In order to ensure that the variable-width box girder can be normally constructed by using a hanging basket for suspended casting, the present invention provides a hanging basket assembly and a construction method for a single-side variable-width unbalanced-weight cantilever box girder.

[0006] The present invention is achieved through the following technical solutions.

[0007] A unilaterally widened unbalanced cantilever box girder hanging basket comprises a main truss, an anchoring system, a suspension system, a traveling mechanism, a bottom mold system and an inner mold system, wherein the main truss comprises a truss beam, a lower connecting rod, a vertical rod and a pull rod, the suspension system comprises a front suspension mechanism and a rear suspension mechanism, the anchoring system comprises a track anchoring mechanism and a main truss rear anchoring mechanism, and is characterized in that:

[0008] The front suspension mechanism comprises a front crossbeam arranged at the front end of the main truss, a front supporting beam arranged at the bottom of the box beam, a suspension rod, and a connector; in the front suspension mechanism, the front crossbeam is provided with a transverse adjustment slot at the adjustable suspension point on the widening side of the box beam, and the front supporting beam is connected with a suspension cage at the adjustable suspension point on the widening side of the box beam for transverse movement; the upper end of the suspension rod at the adjustable suspension point on the widening side of the box beam is connected with the front crossbeam for transverse movement through the transverse adjustment slot, and the lower end is connected with the front supporting beam for transverse movement through the suspension cage, so that the suspension rod at the adjustable suspension point on the widening side of the box beam in the front suspension mechanism can move parallel and transversely to realize the adjustment of the suspension point position; at the fixed suspension point other than the widening side of the box beam, the front crossbeam is connected with the front supporting beam through the suspension rod and the connector;

[0009] The rear suspension mechanism comprises a rear support beam, a suspension rod and a connector; the truss beam is provided with a transverse adjustment slot at the adjustable suspension point on the widening side of the box beam, and the rear support beam is connected with a suspension cage at the adjustable suspension point on the widening side of the box beam; in the rear suspension mechanism, the upper end of the suspension rod at the adjustable suspension point on the widening side of the box beam is connected with the truss beam for transverse movement through the transverse adjustment slot, and the lower end is connected with the rear support beam for transverse movement through the suspension cage, so that the suspension rod at the adjustable suspension point on the widening side of the box beam in the rear suspension mechanism can move parallel and transversely to achieve adjustment of the suspension point position; at the fixed suspension point other than the widening side of the box beam, the truss beam is connected with the rear support beam through the suspension rod and the connector;

[0010] The main truss rear anchoring mechanism includes a fixed rear anchoring mechanism arranged on the equal width side of the box beam, and a movable rear anchoring mechanism arranged on the widened side of the box beam; the movable rear anchoring mechanism includes a rear anchoring beam arranged on the top surface of the rear distribution beam and can be moved laterally, and the rear anchoring beam is connected to the web plate hanger pre-embedded hole through a hanger, so that the hanger in the movable rear anchoring mechanism can move in parallel to adapt to the position change of the web plate and the pre-embedded hole of the hanging point;

[0011] The track anchoring mechanism comprises a track anchoring beam arranged on the top surface of the track; the track anchoring beam located on the widened side of the box beam is provided with a transverse adjustment slot; the upper end of the suspension rod located on the widened side of the box beam is connected to the track anchoring beam through the transverse adjustment slot to act on the track, and the lower end of the suspension rod is connected to the web suspension rod embedded hole, so that the suspension rod of the track anchoring mechanism located on the widened side of the box beam can move in parallel to adapt to the position change of the web and the embedded hole of the suspension point;

[0012] The walking mechanism includes a track fixed on the box beam through a track anchoring mechanism, a rear distribution beam arranged at the rear end of the main truss, a front distribution beam connected to the middle position of the main truss, a walking trolley and a slider that can slide on the track, a trolley connecting seat, and a front fulcrum support; the top end of the trolley connecting seat located on the widening side of the box beam is connected to the rear distribution beam in a transverse sliding manner, and the bottom end is connected to the walking trolley; the top end of the front fulcrum support located on the widening side of the box beam is connected to the front distribution beam in a transverse sliding manner, and the bottom end is connected to the slider;

[0013] The bottom formwork system includes a fixed longitudinal beam connected between the front supporting beam and the rear supporting beam, a fixed bottom formwork laid on the fixed longitudinal beam, movable longitudinal beams arranged on both sides of the fixed longitudinal beam, and a movable bottom formwork laid on the movable longitudinal beam;

[0014] The inner mold system comprises inner top molds arranged on both sides of the box beam, a widening mold arranged between the inner top molds, and an inner mold skeleton widening component for supporting the widening mold.

[0015] Preferably, the hanger rod is a precision-rolled threaded steel hanger rod.

[0016] Preferably, the rear distribution beam and the front distribution beam are double I-beam structures.

[0017] Preferably, the tops of the trolley connecting seat and the front fulcrum support located on the widened side of the box beam are provided with card slots which can be laterally slidably connected with the bottoms of the rear distribution beam and the front distribution beam.

[0018] Preferably, the walking mechanism further comprises:

[0019] A cylinder support provided on the track;

[0020] A travel cylinder is connected to the cylinder support at one end and to the slide block at the other end.

[0021] Preferably, the suspension system further comprises:

[0022] A suspension distribution beam, which is arranged on the upper surface of the transverse adjustment slot, and longitudinal limit plates for inwardly abutting against the front cross beam or truss beam are arranged on both sides of the bottom surface of the suspension distribution beam, and the upper end of the suspension rod passes through the transverse adjustment slot and is connected to the suspension distribution beam to act on the front cross beam or truss beam;

[0023] The suspended distribution beam pushing assembly includes a distribution beam pushing support which can be laterally moved on the front cross beam or the truss beam, an upper pushing cylinder which is fixed on the distribution beam pushing support, and a positioning rod which is arranged at the rear end of the distribution beam pushing support; the positioning rod passes through the distribution beam pushing support and the transverse adjustment groove in sequence, and positioning bolts are arranged at the upper and lower ends of the positioning rod.

[0024] Preferably, the cage comprises a hanging frame sleeved with the joist, and a joist pulley is provided inside the hanging frame and rolls against the outer peripheral surface of the joist;

[0025] The two side walls of one end of the front supporting beam and the rear supporting beam located on the widening side of the box beam are provided with a push adjustment groove, and the bottom of the push adjustment groove is provided with a push positioning groove connected with the push adjustment groove and extending downwardly toward the center line of the box beam;

[0026] The suspension system also includes: a cage pushing assembly; the cage pushing assembly includes a cylinder ring seat that can be laterally moved and sleeved on the front support beam or the rear support beam, lower pushing cylinders symmetrically arranged at the upper and lower ends of the cylinder ring seat, vertical adjustment grooves arranged on the left and right sides of the cylinder ring seat, and a fixing rod that passes through the vertical adjustment grooves and the pushing adjustment grooves.

[0027] Preferably, anchor beam convex edges for clamping the rear distribution beam are provided on both sides of the bottom of the rear anchor beam.

[0028] Specifically, the inner top mold includes a variable-width side inner top mold and an equal-width side inner top mold respectively arranged on both sides of the box beam, which are used to support the variable-width side frame of the variable-width side inner top mold and the equal-width side frame of the equal-width side inner top mold; the widening mold is arranged between the variable-width side inner top mold and the equal-width side inner top mold; the widening component of the inner mold frame includes an upper support rod arranged at the bottom of the widening mold for supporting the widening mold, and a lower support rod arranged below the upper support rod; the two ends of the upper support rod and the lower support rod are respectively hingedly connected to the equal-width side frame and the variable-width side frame.

[0029] A construction method for a unilaterally widened unbalanced cantilever box girder comprises the following steps:

[0030] S1. Installation of hanging basket

[0031] Install the hanging basket on the 0# box beam;

[0032] S2. Basket adjustment

[0033] S21, suspension mechanism adjustment: the position of the suspension rod at the adjustable suspension point on the widening side of the box beam is moved horizontally in parallel with the lateral adjustment slot and the cage, so that the suspension point position can adapt to the width change of the box beam, so as to ensure the accurate suspension position, the vertical force of the suspension rod and the balanced force on both sides of the basket;

[0034] S22. Adjust the elevation and plane position of the bottom mold: The elevation of the bottom mold is adjusted by the height position of the hanging point of the hanger; the plane position of the bottom mold is adjusted by installing the movable longitudinal beam and the movable bottom mold according to the size of the box beam to ensure the accuracy of the plane position of the bottom mold;

[0035] S23, adjusting the elevation and plane position of the inner mold: the elevation of the inner mold is adjusted by adjusting the inner mold hanger, and the inner top mold on the widened side of the box beam is adjusted by installing the inner top mold widening mold and the inner mold skeleton widening component to ensure the accurate plane position of the inner mold;

[0036] S3. Box girder casting

[0037] The box girder concrete pouring construction of this section is carried out by hanging basket;

[0038] S4, hanging basket walking

[0039] S41, after the cast segment box girder is tensioned and grouting is performed, the end formwork and the inner side formwork are removed in sequence, and the side formwork and the inner top formwork and the bottom formwork are lowered;

[0040] S42, first release the rear anchor beam in the movable rear anchor mechanism, then control the rear anchor beam in the fixed rear anchor mechanism to press the rear distribution beam end on the equal width side of the rear box beam, so that the rear distribution beam end on the widened side of the box beam is slightly lifted to ensure that the trolley pulley on the widened side of the box beam is not stressed;

[0041] S43. Install jacks beside the front support bearings on both sides of the front distribution beam, lift up the front distribution beam and remove the track from the pressure of the front support, release the track anchor beam, and move the tracks on both sides of the box beam forward longitudinally;

[0042] S44, after the track is longitudinally moved forward to the right position, for the traveling mechanism on the widened side of the box beam, first release the connecting bolts between the front fulcrum support and the front distribution beam, and the connecting bolts between the trolley connection seat and the rear distribution beam, so that the front fulcrum support can move horizontally on the front distribution beam, and the traveling trolley connection seat can move horizontally on the rear distribution beam; then the front fulcrum support, the traveling trolley, and the track on the widened side of the box beam can be horizontally moved to the set position together;

[0043] S45, reinstall the connecting bolts between the front support and the front distribution beam on the widened side of the box beam, and the connecting bolts between the trolley connecting seat and the rear distribution beam, re-anchor the track using the track anchoring mechanism, unload the jack installed next to the front support, and let the front support fall back onto the track;

[0044] S46, releasing the rear anchor beam in the fixed rear anchor mechanism, so that the trolley pulleys on both sides of the box beam act on the track;

[0045] S47. Install the travel cylinders and cylinder supports on both sides of the box beam;

[0046] S48, push the hanging basket by the travel cylinder until the hanging basket moves into place, and then re-anchor the rear distribution beam by the rear anchor beam; then adjust the hanging basket according to step S2 to adapt to the width change of the next box beam, and then pour concrete for the next box beam according to step S3, and then move the hanging basket according to step S4, and the construction is carried out in a cycle.

[0047] Compared with the prior art, the present invention has the following advantages:

[0048] 1. The hanging basket of the present invention can adjust the fulcrum position of the widening side in real time during the segment casting process, so that the fulcrum always falls on the center of the web on the widening side, and at the same time ensure that the center of gravity of the box beam is always at the center of the hanging basket to ensure the force balance on both sides of the hanging basket. At the same time, the present invention can control the rear anchor point in the anchoring system to always be located at the chamfers on both sides of the web to ensure the safety of the rear anchor force. In addition, in view of the changes in the width of the box beam section by section causing the changes in the width of the inner box and the bottom plate, the bottom mold system and the inner mold system of the hanging basket of the present invention can be flexibly adjusted.

[0049] 2. The hanging basket of the present invention can meet the requirements of the cantilever hanging basket construction of the asymmetric box girder with unilateral widening, and requires less additional materials. The weight of a single hanging basket is about 65 tons, which is equivalent to the weight of an ordinary hanging basket.

[0050] 3. The present invention is easy to operate and has a fast construction speed during use. It can be used for the suspended pouring construction of a single-sided variable-width bridge deck hanging basket and can also be used for the construction of an equal-width bridge deck hanging basket. It is flexible to adjust and use during the turnover process. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a structural schematic diagram of the hanging basket of the present invention.

[0052] Figure 2 for Figure 1 Cross-sectional view at AA in the middle.

[0053] Figure 3 for Figure 1 Cross-sectional view at the middle BB.

[0054] Figure 4 Schematic diagram of the structure of the rear anchoring mechanism of the main truss.

[0055] Figure 5 It is a structural schematic diagram of the track anchoring mechanism.

[0056] Figure 6 It is a structural diagram of the walking mechanism.

[0057] Figure 7 Figure 6 Cross-sectional view at AA in the middle.

[0058] Figure 8 Figure 6 Cross-sectional view at the middle BB.

[0059] Fig. 9 It is a schematic structural diagram of the inner mold system in the hanging basket of the present invention.

[0060] Fig.10 for Fig. 9 A magnified schematic diagram of center A.

[0061] Fig.11 It is a schematic diagram of the top view of the bottom mold system in the hanging basket of the present invention.

[0062] Fig.12 for Fig.11 Cross-sectional view at AA in the middle.

[0063] Fig.13 for Fig.11 Cross-sectional view at the middle BB.

[0064] Fig.14 This is the front view of the front crossbeam.

[0065] Fig.15 A top view of the front crossbeam.

[0066] Fig.16 Schematic diagram of the cross-sectional structure of the front crossbeam.

[0067] Fig.17 It is a structural schematic diagram of the suspension rod in the hanging basket of the present invention being connected to the front cross beam through the suspension distribution beam.

[0068] Fig.18 It is a structural schematic diagram of the jacking assembly of the suspended distribution beam in the hanging basket of the present invention.

[0069] Fig.19 for Fig.18 Cross-sectional view at AA in the middle.

[0070] Fig. 20 This is the front view of the truss beam.

[0071] Fig.21 A top view of a truss beam.

[0072] Fig. 22 Schematic diagram of the cross-section structure of a truss beam.

[0073] Fig.23 It is a structural schematic diagram of the suspension rod in the hanging basket of the present invention being connected to the truss beam through the suspension distribution beam.

[0074] Fig.24 This is the front view of the track anchor beam.

[0075] Fig.25 Top view of the track anchor beam.

[0076] Fig.26 Schematic diagram of the cross-sectional structure of the track anchor beam.

[0077] Fig. 27 This is the front view of the cage.

[0078] Fig.28 It is a schematic diagram of the structure of the cage push assembly and the cage.

[0079] Fig.29 for Fig.28 Cross-sectional view at the middle BB.

[0080] Fig.30 for Fig.28 Cross-sectional view at AA in the middle.

[0081] Fig.31 for Figure 6 Enlarged schematic diagram of CC in the middle.

[0082] Fig.32 for Figure 6 Enlarged schematic diagram of DD in the middle.

[0083] Fig.33 It is the left view of the rear anchor beam anchored on the rear distribution beam;

[0084] The meanings of the symbols in the above figure are:

[0085] 1-main truss, 101-truss beam, 102-lower connecting rod, 103-vertical rod, 104-tension rod;

[0086] 2-anchoring system, 201-track anchoring mechanism, 202-main truss rear anchoring mechanism, 203-fixed rear anchoring mechanism, 204-movable rear anchoring mechanism, 205-rear anchoring beam, 2051-anchoring beam convex edge, 206-track anchoring beam;

[0087] 3-suspension system, 301-front suspension mechanism, 3011-front cross beam, 3012-front supporting beam, 302-rear suspension mechanism, 3021-rear supporting beam, 303-suspension distribution beam, 3031-longitudinal limit plate, 304-suspension distribution beam push assembly, 3041-distribution beam push support, 3042-upper push cylinder, 3043-positioning rod, 3044-positioning bolt, 305-pushing adjustment groove, 306-pushing positioning groove, 307-cage pushing assembly, 3071-cylinder ring seat, 3072-lower push cylinder, 3073-vertical adjustment groove, 3074-fixing rod;

[0088] 4-travel mechanism, 401-track, 402-rear distribution beam, 403-front distribution beam, 404-travel trolley, 405-slider, 406-trolley connecting seat, 407-front fulcrum support, 408-slot, 409-cylinder support, 410-travel cylinder;

[0089] 5-bottom mold system, 501-fixed longitudinal beam, 502-fixed bottom mold, 503-movable longitudinal beam, 504-movable bottom mold;

[0090] 6-inner mold system, 601-inner top mold, 6011-variable width side inner top mold, 6012-equal width side inner top mold, 6013-variable width side frame, 6014-equal width side frame, 602-widening mold, 603-inner mold frame widening component, 6031-upper support rod, 6032-lower support rod;

[0091] 7-hoisting cage, 701-hoisting frame, 702-joist pulley;

[0092] 8- Connector;

[0093] 9- transverse adjustment slot, 901- slot plate, 902- channel, 903- side plate;

[0094] 10- boom;

[0095] 11-Side mold. DETAILED DESCRIPTION

[0096] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0097] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0098] Example 1

[0099] A single-side widened unbalanced cantilever box girder hanging basket, please refer to Figures 1 to 3, including a main truss 1, an anchoring system 2, a suspension system 3, a walking mechanism 4, a bottom mold system 5 and an inner mold system 6; the main truss 1 includes lower connecting rods 102 arranged on both sides of the main truss 1, a vertical rod 103 vertically connected to the middle of the lower connecting rod 102, a truss beam 101 connected between the vertical rods 103, and a pull rod 104 connected to both ends of the lower connecting rod 102 and the top of the vertical rod 103; the suspension system 3 includes a front suspension mechanism 301 and a rear suspension mechanism 302; the anchoring system 2 includes a track anchoring mechanism 201 and a main truss rear anchoring mechanism 202, wherein:

[0100] See also Figure 2 , the front suspension mechanism 301 includes a front crossbeam 3011 arranged at the front end of the main truss 1, a front supporting beam 3012 arranged at the bottom of the box beam, a suspension rod 10, and a connector 8; the front crossbeam 3011 is provided with a transverse adjustment slot 9 at the adjustable suspension point on the widening side of the box beam, and the front supporting beam 3012 is connected with a cage 7 for transverse movement at the adjustable suspension point on the widening side of the box beam; in the front suspension mechanism, the upper end of the suspension rod at the adjustable suspension point on the widening side of the box beam is connected to the front crossbeam 3011 for transverse movement through the transverse adjustment slot 9, and the lower end is connected to the front supporting beam 3012 for transverse movement through the cage 7, so that the suspension rod 10 at the adjustable suspension point on the widening side of the box beam in the front suspension mechanism can be parallel and transversely moved to achieve the adjustment of the suspension point position; similar to the conventional hanging basket, in this embodiment, at the fixed suspension point other than the widening side of the box beam, the front crossbeam 3011 is directly connected to the front supporting beam 3012 through the suspension rod 10 and the connector 8;

[0101] See also Figure 3 , the rear suspension mechanism 302 includes a rear support beam 3021, a suspension rod 10, and a connector 8; the truss beam 101 is provided with a transverse adjustment slot 9 at the adjustable suspension point on the widening side of the box beam, and the rear support beam 3021 is connected with a cage 7 for transverse movement at the adjustable suspension point on the widening side of the box beam; in the rear suspension mechanism, the upper end of the suspension rod 10 at the adjustable suspension point on the widening side of the box beam is connected to the truss beam 101 for transverse movement through the transverse adjustment slot 9, and the lower end is connected to the rear support beam 3021 for transverse movement through the cage 7, so that the suspension rod 10 at the adjustable suspension point on the widening side of the box beam in the rear suspension mechanism can move parallel and transversely to achieve adjustment of the suspension point position; similar to the conventional hanging basket, in this embodiment, at the fixed suspension point other than the widening side of the box beam, the truss beam 101 is directly connected to the rear support beam 3021 through the suspension rod 10 and the connector 8;

[0102] See also Figure 4, the main truss rear anchoring mechanism 202 includes a fixed rear anchoring mechanism 203 arranged on the equal width side of the box beam, and a movable rear anchoring mechanism 204 arranged on the widened side of the box beam; the movable rear anchoring mechanism 204 includes a rear anchoring beam 205 arranged on the top surface of the rear distribution beam 402 and can be moved laterally, and the rear anchoring beam 205 on the widened side of the box beam is connected to the pre-embedded hole of the web hanger through the hanger 10. Since the movable rear anchoring mechanism 204 can move laterally on the top surface of the rear distribution beam 402, the hanger 10 in the movable rear anchoring mechanism can move in parallel to adapt to the position change of the web and the pre-embedded hole of the hanging point; similar to the conventional hanging basket, the fixed rear anchoring mechanism 203 of this embodiment includes a rear anchoring beam 205 fixedly arranged on the top surface of the rear distribution beam 402, and the rear anchoring beam 205 on the equal width side of the box beam is connected to the pre-embedded hole of the web hanger through the hanger 10;

[0103] See also Figure 5 The track anchoring mechanism 201 includes a track anchoring beam 206 arranged on the top surface of the track; the track anchoring beam 206 located on the widened side of the box beam is provided with a transverse adjustment slot 9; the upper end of the suspension rod 10 located on the widened side of the box beam is connected to the track anchoring beam 206 through the transverse adjustment slot 9 and acts on the track 401, and the lower end of the suspension rod 10 is connected to the web suspension rod embedded hole, so that the suspension rod 10 of the track anchoring mechanism located on the widened side of the box beam can move parallel to adapt to the position change of the web and the embedded hole of the suspension point;

[0104] See also Figure 6-Figure 8 The walking mechanism 4 includes a track 401 fixed on the box beam through a track anchoring mechanism, a rear distribution beam 402 arranged at the rear end of the main truss 1, a front distribution beam 403 connected to the middle position of the main truss 1, a walking trolley 404 and a slider 405 that can slide on the track, a trolley connecting seat 406, and a front fulcrum support 407; the top end of the trolley connecting seat 406 located on the widening side of the box beam is connected to the rear distribution beam 402 for transverse sliding, and the bottom end is connected to the walking trolley 404; the top end of the front fulcrum support 407 located on the widening side of the box beam is connected to the front distribution beam 403 for transverse sliding, and the bottom end is connected to the slider 405; similar to the conventional hanging basket, the top end of the trolley connecting seat 406 located on the widening side of the box beam can be fixedly connected to the rear distribution beam 402, and the top end of the front fulcrum support 407 located on the widening side of the box beam can be fixedly connected to the front distribution beam 403;

[0105] See also Fig. 9 , Fig.10The bottom formwork system 5 includes a fixed longitudinal beam 501 connected between the front supporting beam 3012 and the rear supporting beam 3021, a fixed bottom formwork 502 laid on the fixed longitudinal beam 501, movable longitudinal beams 503 arranged on both sides of the fixed longitudinal beam, and a movable bottom formwork 504 laid on the movable longitudinal beam, so that the movable bottom formwork can be increased or decreased on the widening side of the box beam to adapt to the width change of the box beam bottom plate, and the movable longitudinal beams can be increased or decreased and their positions adjusted to make the longitudinal beam spacing meet the force requirements and ensure the number of longitudinal beams at the web.

[0106] See also Figure 11-13 The inner mold system 6 includes inner top molds 601 arranged on both sides of the box beam, a widening mold 602 arranged between the inner top molds 601, and an inner mold skeleton widening member 603 for supporting the widening mold 602; when the inner mold system 6 is constructed on the widened side of the box beam, the width of the inner mold skeleton widening member 603 can be adjusted. After the adjustment of the inner mold skeleton is completed, the widening mold 602 is added, reduced or replaced to adapt to the change in the width of the inner box;

[0107] Based on the above structure, the present invention improves the ordinary hanging basket, and cooperates with the cage by setting a transverse adjustment slot in the suspension system, so that the suspension rod on the widened side of the box beam in the suspension system can be moved in parallel and transversely to adjust the position of the suspension point, thereby adapting to the change of the box beam width and ensuring the balance and stability of the suspension; in the anchoring system, by setting a movable rear anchoring mechanism and setting a transverse adjustment slot on the track anchoring beam, the suspension rod in the anchoring system can be moved in parallel to adapt to the position change of the web and the embedded hole of the hanging point, which can effectively ensure the force balance on both sides of the main truss when the box beam width changes, which is beneficial to improve the anti-tilt stability of the hanging basket during walking construction; in the walking mechanism, the trolley connecting seat is connected to the rear distribution beam through transverse sliding, and the front support is connected to the front distribution beam through transverse sliding, so that the position of the front support and the walking trolley can be adjusted to adapt to the change of the center line position of the web on the widened side of the box beam, thereby ensuring the force balance on both sides of the box beam, and the front support and the walking trolley can be translated laterally together with the track, which improves the construction efficiency;

[0108] Therefore, the hanging basket of the present invention can flexibly adjust the fulcrum position of the widened side of the box beam during the segment casting process, so that the fulcrum always falls on the center of the web on the widened side, and at the same time, the center of gravity of the box beam is always at the center of the hanging basket, so as to ensure the force balance on both sides of the hanging basket; in the bottom mold system and the inner mold system of the present invention, by setting movable longitudinal beams and movable bottom molds, as well as widening molds and inner mold skeleton widening components, each mold can adapt to the change of the box beam width;

[0109] The hanging basket components of the present invention can be processed in the factory and installed and debugged on site; other components of the hanging basket of the present invention are consistent with those of ordinary hanging baskets, such as: main truss, truss beam, track beam, traveling hanger, inner mold sliding beam, inner mold traveling mechanism, inner mold adjusting strut, traveling cylinder, cylinder support, outer mold, etc.

[0110] Further, in a specific embodiment, see Figure 14-Figure 26 The transverse adjustment slot 9 is arranged through the front cross beam 3011, the truss beam 101 and the track anchor beam 206, so that the suspension rod 10 can be vertically plugged into the transverse adjustment slot 9, and the suspension rod 10 can move horizontally along the transverse adjustment slot 9; the transverse adjustment slot 9 includes a slot plate 901, a slot 902 arranged on the slot plate 901 along the transverse movement direction of the suspension rod, and side plates 903 are arranged on both sides of the slot 902; preferably, the slot plate 901 is two pieces, and the two slot plates 90 1 are respectively arranged on the top and bottom surfaces of the front cross beam 3011, the truss beam 101 and the track anchor beam 206; correspondingly, there are two grooves 902, so that the suspension rod can be inserted into the two grooves 902 and fixed with bolts at the top of the suspension rod to firmly connect the top of the suspension rod to the transverse adjustment groove 9; and because the side plates 903 are arranged on both sides of the groove 902, the transverse adjustment groove 9 can better resist the force of the suspension rod in the longitudinal direction, so that the suspension rod is fixed more firmly;

[0111] In the above structure, please refer to Figure 14-17 For the transverse adjustment slot 9 on the front cross beam 3011, since the front cross beam 3011 is a steel section, the slot plate 901 is integrally formed and arranged on the front cross beam 3011 (that is, the top plate or bottom plate of the front cross beam 3011 on the widening side of the box beam can be considered as the slot plate 901); please refer to Figure 20-23 For the transverse adjustment slot 9 on the truss beam 101, since the truss beam 101 is the main force-bearing component in the main truss, it is formed by splicing channel steel and steel plate, so the slot plate 901 can be welded horizontally between the components on the widening side of the truss beam 101 box beam by steel plate; please refer to Figure 24-26 For the track anchor beam 206, a double-piece I-beam is usually used. Similarly, the trough plate 901 can be integrally formed and arranged on the track anchor beam 206 (that is, the top plate or bottom plate of the track anchor beam 206 located on the widened side of the box beam can be considered as the trough plate 901), and the side plate 903 is the two webs of the double-piece I-beam.

[0112] Furthermore, in a preferred embodiment, the hanger rod 10 is a precision-rolled threaded steel hanger rod.

[0113] Furthermore, in a preferred embodiment, the rear distribution beam 402 and the front distribution beam 403 are double I-beam structures.

[0114] Further, in a preferred embodiment, see Fig.31 and Fig.32 A card slot 408 is provided at the top of the trolley connecting seat 406 and the front fulcrum support 407 located on the widened side of the box beam, and the card slot 408 can be connected to the bottom of the rear distribution beam 402 and the front distribution beam 403 in a transversely slidable manner.

[0115] Further, in a preferred embodiment, see Figure 6 , the walking mechanism 4 also includes:

[0116] A cylinder support 409 disposed on the track;

[0117] A travel cylinder 410 is connected to the cylinder support 409 at one end and to the slider 405 at the other end.

[0118] Further, in a preferred embodiment, see Figure 2 , Figure 3 , Fig.17 and, 18 and Fig.19 , the suspension system 3 also includes:

[0119] The suspension distribution beam 303 is arranged on the upper surface of the transverse adjustment slot 9. The two sides of the bottom surface of the suspension distribution beam 303 are provided with longitudinal limit pieces 3031 for inwardly abutting against the front cross beam 3011 or the truss beam 101. The upper end of the suspension rod 10 passes through the transverse adjustment slot 9 and is connected to the suspension distribution beam 40 to act on the front cross beam 3011 or the truss beam 101.

[0120] The suspension distribution beam pushing assembly 304 can be moved laterally on the front cross beam 3011 or the truss beam 101 to adjust to a suitable position to push the suspension distribution beam 303, thereby driving the upper end of the suspension rod 10 to move laterally to adapt to the change in the width of the box beam; specifically, the suspension distribution beam pushing assembly includes a distribution beam pushing support 3041 that can be laterally moved on the front cross beam 3011 or the truss beam 101, an upper pushing cylinder 3042 fixedly arranged on the distribution beam pushing support 3041, and a positioning rod 3043 arranged at the rear end of the distribution beam pushing support 3041; the positioning rod 3043 sequentially penetrates the distribution beam pushing support 3041 and the lateral adjustment slot 9, and positioning bolts 3044 are arranged at the upper and lower ends of the positioning rod 3043;

[0121] Based on the above structure, by setting the suspension distribution beam 303, the hanger rod can act on the front cross beam 3011 or the truss beam 101 through the suspension distribution beam 303, so as to ensure that the suspension force is uniform; because the longitudinal limit plate 3031 is pressed inward against the front cross beam 3011 or the truss beam 101, the suspension distribution beam 303 will not deviate or rotate when moving on the front cross beam 3011 or the truss beam 101; the suspension distribution beam 303 can be pushed more conveniently through the suspension distribution beam pushing assembly 304 to achieve the position adjustment of the hanger rod 10 at the adjustable suspension point; when the suspension distribution beam 303 moves laterally, lubricating oil can be applied to the top surface of the front cross beam 3011 or the truss beam 101 to reduce the movement of the suspension distribution beam 303 Resistance; and, since a positioning rod 3043 is provided on the distribution beam pushing support 3041, the positioning rod 3043 sequentially passes through the distribution beam pushing support 3041 and the lateral adjustment slot 9, and positioning bolts 3044 are provided at the upper and lower ends of the positioning rod 3043, the distribution beam pushing support 3041 can be moved laterally to adjust the position of the upper pushing cylinder 3042, and the positioning rod 3043 and the positioning bolt 3044 are used to fix the position of the upper pushing cylinder 3042, and then the working end of the upper pushing cylinder 3042 is pressed against one side of the suspension distribution beam 303, and the suspension distribution beam 303 can be pushed to make the suspension distribution beam 303 translate laterally, thereby realizing the lateral translation of the suspension rod and the adjustment of the suspension point position;

[0122] Further, in a preferred embodiment, see Figure 2 , Figure 3 , Fig. 27 , Fig.28 , Fig.29 and Fig.30 :

[0123] The cage 7 comprises a hanging frame 701 which is sleeved with the joist, and a joist pulley 702 which rolls against the outer peripheral surface of the joist is arranged in the hanging frame 701;

[0124] The front supporting beam 3012 and the rear supporting beam 3021 are provided with a push adjustment groove 305 on both sides of the side where the box beam is widened, and a push positioning groove 306 is provided at the bottom of the push adjustment groove 305, which is connected with the push adjustment groove 305 and extends downwardly and obliquely toward the center line of the box beam;

[0125] The suspension system 3 also includes: a cage push assembly 307; the cage push assembly 307 includes a cylinder ring seat 3071 which is sleeved on the front support beam 3012 or the rear support beam 3021 and can be moved laterally, a lower push cylinder 3072 symmetrically arranged at the upper and lower ends of the cylinder ring seat 3071, a vertical adjustment groove 3073 arranged on the left and right sides of the cylinder ring seat 3071, and a fixing rod 3074 which passes through the vertical adjustment groove 3073 and the push adjustment groove 305;

[0126] Since the hanging frame 701 is in contact with the outer peripheral surface of the supporting beam, the hanging frame will be subjected to different friction forces in the circumferential direction, and it is easy to get stuck with the supporting beam, so it is difficult to move horizontally; based on the above structure, by setting the supporting beam pulley 702, the friction force during the horizontal movement of the cage 7 can be reduced; the cylinder ring seat 3071 can cooperate with the vertical adjustment groove 3073, the push adjustment groove 305 and the fixing rod 3074, and the position of the cylinder ring seat 3071 on the supporting beam can be conveniently and flexibly adjusted and fixed, thereby adjusting the position of the lower push cylinder 3072 on the supporting beam to push the hanging frame 701, so as to solve the problem of insufficient working distance of the lower push cylinder 3072; when pushing, the working end of the lower push cylinder 3072 is placed against one side of the hanging frame 701, and the hanging frame 701 can be pushed to make the hanging frame 701 translate horizontally, thereby realizing the adjustment of the hanging point position;

[0127] In addition, through the cooperation of the suspension distribution beam 303, the suspension distribution beam jacking assembly 304, the cage jacking assembly 307 and the cage 7, even without releasing the suspension force of the hanger, the synchronous lateral movement of the upper and lower ends of the hanger on the widened side of the box beam can still be achieved, thereby improving the construction efficiency.

[0128] Further, in a preferred embodiment, see Fig.33 Both sides of the bottom of the rear anchoring beam 205 are provided with anchoring beam convex edges 2051 for clamping the rear distribution beam 402.

[0129] Further, in a preferred embodiment, see Fig. 9 and Fig.10 The inner top mold 601 includes a variable-width side inner top mold 6011 and an equal-width side inner top mold 6012 respectively arranged on both sides of the box beam, a variable-width side frame 6013 for supporting the variable-width side inner top mold, and an equal-width side frame 6014 for supporting the equal-width side inner top mold; the widening mold 602 is arranged between the variable-width side inner top mold 6011 and the equal-width side inner top mold 6012; the inner mold frame widening component 603 includes an upper support rod 6031 arranged at the bottom of the widening mold 602 for supporting the widening mold 602, and a lower support rod 6032 arranged below the upper support rod 6031; the two ends of the upper support rod 6031 and the lower support rod 6032 are respectively hingedly connected to the equal-width side frame 6014 and the variable-width side frame 6013.

[0130] Example 2

[0131] A construction method for a single-side widened unbalanced cantilever box girder, see Figures 1 to 12 , which comprises the following steps:

[0132] S1. Installation of hanging basket

[0133] Install the hanging basket on the 0# box beam, specifically including: measuring and setting out on the 0# block, popping up the center line of the hanging basket running track according to the design width of the hanging basket; laying the track pad beam on the center line of the track, installing the track, and installing the track pressure beam; installing the walking trolley, the walking trolley connecting seat, the rear distribution beam, and the anchor beam; installing the front fulcrum support, the slider, and the front distribution beam; installing the lower connecting rod, vertical rod, and pull rod of the main truss in sequence; installing the truss beam; installing the front crossbeam and the precision-rolled threaded steel hanger rod; installing the rear support beam, the front support beam, the longitudinal beam, and the bottom mold in sequence; installing the outer mold and the walking hanger; installing the inner mold sliding beam, the inner mold walking mechanism, the inner mold frame, and the inner mold; checking, adjusting, and fixing each connecting piece, and installing the working platform and the safety protection system;

[0134] S2. Basket adjustment

[0135] S21, suspension mechanism adjustment: through the transverse adjustment slot 9 and the cage 7, the position of the suspension rod 10 at the adjustable suspension point on the widening side of the box beam is moved parallel and transversely, so that the suspension point position can adapt to the width change of the box beam, so as to ensure the accurate suspension position, the vertical force of the suspension rod and the balanced force on both sides of the hanging basket;

[0136] S22, adjusting the elevation and plane position of the bottom mold: the elevation of the bottom mold is adjusted by the height position of the hanging point of the hanger; the plane position of the bottom mold is adjusted by installing the movable longitudinal beam 503 and the movable bottom mold 504 according to the size of the box beam to ensure the accuracy of the plane position of the bottom mold;

[0137] S23, adjusting the elevation and plane position of the inner mold: the elevation of the inner mold is adjusted by adjusting the inner mold hanger, and the inner top mold on the widened side of the box beam is adjusted by installing the inner top mold widening mold 602 and the inner mold skeleton widening member 603 to ensure the accurate plane position of the inner mold;

[0138] S3. Box girder casting

[0139] The box girder concrete pouring construction of this section is carried out by hanging basket;

[0140] S4, hanging basket walking

[0141] S41, after the cast segment box girder is tensioned and grouting is performed, the end formwork and the inner side formwork are removed in sequence, and the side formwork and the inner top formwork and the bottom formwork are lowered;

[0142] S42, first release the rear anchoring beam 205 in the movable rear anchoring mechanism, then control the rear anchoring beam 205 in the fixed rear anchoring mechanism to press the beam end of the rear distribution beam 402 on the equal width side of the rear box beam, so that the beam end of the rear distribution beam 402 on the widened side of the box beam is slightly lifted to ensure that the pulley of the walking trolley 404 on the widened side of the box beam is not stressed;

[0143] S43, install a jack next to the front support 407 on both sides of the front distribution beam 403, lift the front distribution beam 403 so that the track is not subjected to the pressure of the front support, release the track anchoring beam 206, and move the tracks on both sides of the box beam forward longitudinally;

[0144] S44, after the track is longitudinally moved forward to the right position, for the traveling mechanism on the widened side of the box beam, first release the connecting bolts between the front fulcrum support 407 and the front distribution beam 403, and the connecting bolts between the trolley connection seat 406 and the rear distribution beam 402, so that the front fulcrum support can move laterally on the front distribution beam 403, and the traveling trolley connection seat can move laterally on the rear distribution beam 402; then the front fulcrum support, the traveling trolley, and the track on the widened side of the box beam can be translated together to the set position (i.e., the center position of the web of the next segment);

[0145] S45, reinstall the connecting bolts between the front fulcrum support and the front distribution beam on the widened side of the box beam, and the connecting bolts between the trolley connection seat and the rear distribution beam, re-anchor the track using the track anchoring mechanism, unload the jack installed next to the front fulcrum support 407, and make the front fulcrum support fall back onto the track; then install and check the track pressure beam to ensure the number, position, firmness and reliability of the pressure beam; laterally adjust the outer side mold, the position of the suspension mechanism and the width of the inner top mold on the widened side of the box beam to prevent the hanging basket from colliding with and being blocked by the cast box beam during movement;

[0146] S46, releasing the rear anchor beam 205 in the fixed rear anchor mechanism, so that the trolley pulleys on both sides of the box beam act on the track;

[0147] S47. Install the travel cylinders and cylinder supports on both sides of the box beam;

[0148] S48, the basket is pushed by the travel cylinder to move, and the basket starts to move. After each travel, the position of the cylinder support must be changed, and the track pressure beam must be installed forward until the basket moves into place, and then the rear distribution beam 402 is anchored again through the rear anchor beam 205; then the basket is adjusted according to step S2 to adapt to the width change of the next box beam, and then the concrete pouring construction of the next box beam is carried out according to step S3, and then the basket is moved according to step S4, and the construction is carried out in a cycle.

Claims

1. A unilaterally widened unbalanced cantilever box girder hanging basket, comprising a main truss, an anchoring system, a suspension system, a traveling mechanism, a bottom mold system and an inner mold system, wherein the main truss comprises a truss beam, a lower connecting rod, a vertical rod and a pull rod; the suspension system comprises a front suspension mechanism and a rear suspension mechanism, and the anchoring system comprises a track anchoring mechanism and a main truss rear anchoring mechanism, characterized in that: The front suspension mechanism comprises a front crossbeam arranged at the front end of the main truss, and a front supporting beam arranged at the bottom of the box beam; the front crossbeam is provided with a transverse adjustment slot at the adjustable suspension point on the widening side of the box beam, and the front supporting beam is connected with a cage for transverse movement at the adjustable suspension point on the widening side of the box beam; the upper end of the suspension rod at the adjustable suspension point on the widening side of the box beam is connected with the front crossbeam for transverse movement through the transverse adjustment slot, and the lower end is connected with the front supporting beam for transverse movement through the cage; The rear suspension mechanism comprises a rear support beam; the truss beam is provided with a transverse adjustment slot at the adjustable suspension point on the widening side of the box beam, and the rear support beam is connected with a cage for transverse movement at the adjustable suspension point on the widening side of the box beam; the upper end of the suspension rod at the adjustable suspension point on the widening side of the box beam is connected with the truss beam for transverse movement through the transverse adjustment slot, and the lower end is connected with the rear support beam for transverse movement through the cage; The main truss rear anchoring mechanism includes a fixed rear anchoring mechanism arranged on the equal width side of the box beam, and a movable rear anchoring mechanism arranged on the variable width side of the box beam; the movable rear anchoring mechanism includes a rear anchoring beam arranged on the top surface of the rear distribution beam and movable in a transverse direction, and the rear anchoring beam is connected to the pre-buried hole of the web hanger through a hanger; The track anchoring mechanism comprises a track anchoring beam arranged on the top surface of the track; the track anchoring beam located on the widening side of the box beam is provided with a transverse adjustment slot; the upper end of the suspension rod located on the widening side of the box beam is connected to the track anchoring beam through the transverse adjustment slot to act on the track, and the lower end of the suspension rod is connected to the embedded hole of the web suspension rod; The walking mechanism includes tracks fixed to both sides of the box beam through a track anchoring mechanism, a rear distribution beam arranged at the rear end of the main truss, a front distribution beam connected to the middle position of the main truss, a walking trolley and a slider that can slide on the track, a trolley connecting seat, and a front fulcrum support; the top end of the trolley connecting seat located on the widening side of the box beam is connected to the rear distribution beam in a transverse sliding manner, and the bottom end is connected to the walking trolley; the top end of the front fulcrum support located on the widening side of the box beam is connected to the front distribution beam in a transverse sliding manner, and the bottom end is connected to the slider; The bottom formwork system includes a fixed longitudinal beam connected between the front supporting beam and the rear supporting beam, a fixed bottom formwork laid on the fixed longitudinal beam, movable longitudinal beams arranged on both sides of the fixed longitudinal beam, and a movable bottom formwork laid on the movable longitudinal beam; The inner mold system comprises inner top molds arranged on both sides of the box beam, a widening mold arranged between the inner top molds, and an inner mold skeleton widening component for supporting the widening mold.

2. The one-side widened unbalanced cantilever box beam hanging basket as claimed in claim 1, characterized in that The suspension rod is a precision-rolled threaded steel suspension rod.

3. The one-side widened unbalanced cantilever box beam hanging basket as claimed in claim 1, characterized in that The rear distribution beam and the front distribution beam are double-jointed I-beam structures.

4. The one-side widened unbalanced cantilever box beam hanging basket according to claim 1, characterized in that: The tops of the trolley connecting seat and the front fulcrum support located on the widened side of the box beam are provided with card slots, and the card slots are card-connected with the bottoms of the rear distribution beam and the front distribution beam in a transversely slidable manner.

5. The one-side widened unbalanced cantilever box beam hanging basket as claimed in claim 1, characterized in that The walking mechanism also includes: A cylinder support provided on the track; A travel cylinder with one end connected to the cylinder support and the other end connected to the slide block.

6. The one-side widened unbalanced cantilever box beam hanging basket according to claim 1, characterized in that: The suspension system also includes: A suspension distribution beam, which is arranged on the upper surface of the transverse adjustment slot, and longitudinal limit plates for inwardly abutting against the front cross beam or truss beam are arranged on both sides of the bottom surface of the suspension distribution beam, and the upper end of the suspension rod passes through the transverse adjustment slot and is connected to the suspension distribution beam to act on the front cross beam or truss beam; The suspended distribution beam pushing assembly includes a distribution beam pushing support which can be laterally moved on the front cross beam or the truss beam, an upper pushing cylinder which is fixed on the distribution beam pushing support, and a positioning rod which is arranged at the rear end of the distribution beam pushing support; the positioning rod passes through the distribution beam pushing support and the transverse adjustment groove in sequence, and positioning bolts are arranged at the upper and lower ends of the positioning rod.

7. The one-side widened unbalanced cantilever box beam hanging basket according to claim 1, characterized in that: The cage comprises a hanging frame sleeved with the joist, and a joist pulley is arranged in the hanging frame and rolls against the outer peripheral surface of the joist; The two side walls of one end of the front supporting beam and the rear supporting beam located on the widening side of the box beam are provided with a push adjustment groove, and the bottom of the push adjustment groove is provided with a push positioning groove connected with the push adjustment groove and extending downwardly toward the center line of the box beam; The suspension system also includes: a cage pushing assembly; the cage pushing assembly includes a cylinder ring seat that can be laterally moved and sleeved on the front support beam or the rear support beam, lower pushing cylinders symmetrically arranged at the upper and lower ends of the cylinder ring seat, vertical adjustment grooves arranged on the left and right sides of the cylinder ring seat, and a fixing rod that passes through the vertical adjustment grooves and the pushing adjustment grooves.

8. The one-side widened unbalanced cantilever box beam hanging basket according to claim 1, characterized in that: Anchoring beam convex edges for clamping the rear distribution beam are arranged on both sides of the bottom of the rear anchoring beam.

9. The one-side widened unbalanced cantilever box beam hanging basket according to claim 1, characterized in that: The inner top mold includes a variable-width side inner top mold and an equal-width side inner top mold respectively arranged on both sides of the box beam, which are used to support the variable-width side frame of the variable-width side inner top mold and the equal-width side frame of the equal-width side inner top mold; the widening mold is arranged between the variable-width side inner top mold and the equal-width side inner top mold; the inner mold frame widening component includes an upper support rod arranged at the bottom of the widening mold for supporting the widening mold, and a lower support rod arranged below the upper support rod; the two ends of the upper support rod and the lower support rod are respectively hingedly connected to the equal-width side frame and the variable-width side frame.

10. A construction method for a unilaterally widened unbalanced cantilever box girder, characterized in that The steps include: S1. Installation of hanging basket Install the hanging basket on the 0# box beam; S2. Basket adjustment S21, suspension mechanism adjustment: through the transverse adjustment slot and the cage, the position of the suspension rod at the adjustable suspension point on the widening side of the box beam is moved parallel and transversely, so that the suspension point position can adapt to the width change of the box beam, so as to ensure the accurate suspension position, the vertical force of the suspension rod and the balanced force on both sides of the basket; S22. Adjust the elevation and plane position of the bottom mold: The elevation of the bottom mold is adjusted by the height position of the hanging point of the hanger; the plane position of the bottom mold is adjusted by installing the movable longitudinal beam and the movable bottom mold according to the size of the box beam to ensure the accuracy of the plane position of the bottom mold; S23, adjusting the elevation and plane position of the inner mold: the elevation of the inner mold is adjusted by adjusting the inner mold hanger, and the inner top mold on the widened side of the box beam is adjusted by installing the inner top mold widening mold and the inner mold skeleton widening component to ensure the accurate plane position of the inner mold; S3. Box girder casting The box girder concrete pouring construction of this section is carried out by hanging basket; S4, hanging basket walking S41, after the cast segment box girder is tensioned and grouting is performed, the end formwork and the inner side formwork are removed in sequence, and the side formwork and the inner top formwork and the bottom formwork are lowered; S42, first release the rear anchor beam in the movable rear anchor mechanism, then control the rear anchor beam in the fixed rear anchor mechanism to press the rear distribution beam end on the equal width side of the rear box beam, so that the rear distribution beam end on the widened side of the box beam is slightly lifted to ensure that the trolley pulley on the widened side of the box beam is not stressed; S43, install jacks beside the front support bearings on both sides of the front distribution beam, jack up the front distribution beam so that the track is not subjected to the pressure of the front support, release the track anchor beam, and longitudinally move the tracks on both sides of the box beam forward; S44, after the track is longitudinally moved forward to the right position, for the traveling mechanism on the widened side of the box beam, first release the connecting bolts between the front fulcrum support and the front distribution beam, and the connecting bolts between the trolley connection seat and the rear distribution beam, so that the front fulcrum support can move horizontally on the front distribution beam, and the traveling trolley connection seat can move horizontally on the rear distribution beam; then the front fulcrum support, the traveling trolley, and the track on the widened side of the box beam can be horizontally moved to the set position together; S45, reinstall the connecting bolts between the front support and the front distribution beam on the widened side of the box beam, and the connecting bolts between the trolley connecting seat and the rear distribution beam, re-anchor the track using the track anchoring mechanism, unload the jack installed next to the front support, and let the front support fall back onto the track; S46, releasing the rear anchor beam in the fixed rear anchor mechanism, so that the trolley pulleys on both sides of the box beam act on the track; S47. Install the travel cylinders and cylinder supports on both sides of the box beam; S48, push the hanging basket by the travel cylinder until the hanging basket moves into place, and then re-anchor the rear distribution beam by the rear anchor beam; then adjust the hanging basket according to step S2 to adapt to the width change of the next box beam, and then pour concrete for the next box beam according to step S3, and then move the hanging basket according to step S4, and the construction is carried out in a cycle.

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