CN111531689A - Die assembling and disassembling trolley for box girder outer side die plate and die assembling and disassembling method thereof - Google Patents

Abstract

The invention discloses a die assembling and disassembling trolley for a box girder outer side template and a method for assembling and disassembling the die assembling and disassembling trolley, wherein the die assembling and disassembling trolley comprises a frame, a moving mechanism, a longitudinal hydraulic jack, a transverse hydraulic jack and a vertical hydraulic jack; the two opposite sides of the top of the frame are provided with bearing plates which can horizontally translate; the moving mechanism is arranged on the frame and used for driving the frame to move longitudinally and transversely and turn; the longitudinal hydraulic jack is hinged to the frame and hinged to the bearing plate to drive the bearing plate to longitudinally translate; the transverse hydraulic jack is hinged to the frame and hinged to the bearing plate to drive the bearing plate to transversely translate; the vertical hydraulic jack is arranged on the bearing plate and can stretch in a direction perpendicular to the top surface of the bearing plate; the scheme enables the contraposition installation of the template on the outer side of the box girder to be simple and easy, and the dilemma existing in the prior art is practically solved.

Description

Die assembling and disassembling trolley for box girder outer side die plate and die assembling and disassembling method thereof

Technical Field

The invention relates to the field of bridge engineering, in particular to a die assembling and disassembling trolley for an outer die plate of a box girder and a method for assembling and disassembling the die plate.

Background

The box girder is one of the middle girders in bridge engineering, the inner part of the box girder is hollow, and flanges are arranged on two sides of the upper part of the box girder and are similar to a box, so that the box girder is named.

When the precast box girder adopts the block assembly type outer side template to finish the box girder concrete pouring process at one time, the outer side template needs to be installed and dismantled before and after the box girder concrete pouring. At present, a gantry crane or an automobile crane is generally used for hoisting operation of installing and dismantling a box girder block-assembled outer side template, because the shape of the template is irregular, the posture of the template after hoisting is difficult to control, the outer side support legs of the template are difficult to adjust to a vertical state, the later installed template is difficult to align with the installed template, the template alignment is realized by manpower through a dragging and prying method, the connection bolt between two sections of templates is difficult to install due to inaccurate alignment between the two sections of templates, meanwhile, the installation precision is difficult to control, the labor intensity of workers is high, the work efficiency is low, the workers need to stand under the hoisted template for operation, the operation is unsafe, the cross section size of the box girder is increased particularly along with the increase of the span of the bridge girder, the height of the large prefabricated box girder reaches 2-4m at present, the width of wing plates overhung at two sides reaches 2-6m, and the wing plates of some box, the outer side templates are large in height, large in width and irregular in shape, the weight of a single section of the outer side template is large, the difficulty of assembly and disassembly is further increased, and therefore a technical scheme capable of solving the dilemma is urgently needed.

Disclosure of Invention

The invention aims to provide a die assembling and disassembling trolley for an outer side template of a box girder and a method for assembling and disassembling the die, which aim to solve the problem that the existing outer side template of the box girder is difficult to assemble.

In order to solve the technical problem, the invention provides a die assembling and disassembling trolley for a box girder outer side template, which comprises a frame, a moving mechanism, a longitudinal hydraulic jack, a transverse hydraulic jack and a vertical hydraulic jack, wherein the frame is provided with a plurality of guide rails; bearing plates are arranged on two opposite sides of the top of the frame and can horizontally translate; the moving mechanism is arranged on the frame and is used for driving the frame to move longitudinally, transversely and turn; the longitudinal hydraulic jack is hinged to the frame and provided with a longitudinal ejector rod, the longitudinal ejector rod is hinged to the bearing plate, and the longitudinal ejector rod stretches and retracts to drive the bearing plate to longitudinally translate; the transverse hydraulic jack is hinged to the frame and provided with a transverse ejector rod, the transverse ejector rod is hinged to the bearing plate, and the transverse ejector rod stretches and retracts to drive the bearing plate to transversely translate; the vertical hydraulic jack is arranged on the bearing plate and provided with a vertical ejector rod, and the vertical ejector rod can stretch in the direction perpendicular to the top surface of the bearing plate.

In one embodiment, the vehicle frame comprises two longitudinal beams which are opposite in parallel and two cross beams which are opposite in parallel, the moving mechanism is arranged at each end of the two longitudinal beams, the two cross beams are arranged between the two longitudinal beams, and the bearing plate is arranged above the two cross beams.

In one embodiment, the moving mechanism comprises a rotating shaft, a wheel cover, wheels, a driving motor and a steering hydraulic jack; one end of the rotating shaft is fixedly connected with the wheel housing, and the other end of the rotating shaft is inserted into the longitudinal beam from the vertical direction, so that the wheel housing can rotate by taking the rotating shaft as a rotating center; the wheels are arranged in the wheel covers, the driving motor is arranged outside the wheel covers, and the driving motor drives the wheels to rotate; the steering hydraulic jack is hinged to the outer side face of the longitudinal beam and provided with a steering ejector rod, the steering ejector rod is hinged to the wheel housing, and the steering ejector rod stretches and retracts to drive the wheel housing to rotate by 90 degrees at most.

In one embodiment, the mold assembling and disassembling trolley further comprises an auxiliary sliding plate, the auxiliary sliding plate is arranged on the top surface of the longitudinal beam, the top surface of the auxiliary sliding plate is a smooth surface, and the supporting plate is supported on the smooth surface.

In one embodiment, the same end of each longitudinal beam is hinged with the longitudinal hydraulic jack, and the longitudinal push rods of the longitudinal hydraulic jacks are hinged with the same bearing plate; the die assembling and disassembling trolley further comprises a linkage rod, wherein two ends of the linkage rod are respectively hinged with the two bearing plates, so that the longitudinal ejector rod stretches and retracts to drive the two bearing plates to synchronously perform longitudinal translation.

In one embodiment, the two transverse beams are hinged with the transverse hydraulic jacks, the stretching directions of the transverse push rods of the two transverse hydraulic jacks are the same, and the transverse push rods of the two transverse hydraulic jacks are respectively hinged with the two bearing plates.

In one embodiment, the form assembling and disassembling trolley further comprises a raising mechanism, the raising mechanism is detachably mounted on the supporting plate, and the vertical hydraulic jack is arranged at the top of the raising mechanism.

In one embodiment, the elevating mechanism comprises a horizontal support frame and vertical support frames connected to two opposite sides of the horizontal support frame, the vertical support frames are supported on the two support plates, and the top of each vertical support frame is provided with the vertical hydraulic jack.

In order to solve the technical problem, the invention also provides an installation method of the box girder outer side template, which comprises the following steps,

s1, starting the mould assembling and disassembling trolley, moving the mould assembling and disassembling trolley to the position below the box girder outer side template to be installed, and finishing the alignment of the mould assembling and disassembling trolley and the box girder outer side template;

s2, starting the vertical hydraulic jacks to enable the top surfaces of the vertical ejector rods of the vertical hydraulic jacks to be in the same plane, then controlling the vertical ejector rods to jack the box girder outer side formwork, and transporting the box girder outer side formwork to a position to be installed;

s3, adjusting the height and the verticality of the template on the outer side of the box girder by using the vertical hydraulic jack until the installation requirement is met;

s4, starting the transverse hydraulic jack, pushing the box girder outer side template to transversely move until the box girder outer side template is contacted with the side surface of the precast girder pedestal;

s5, starting the longitudinal hydraulic jack, and pushing the box girder outer side template to move longitudinally to a required position;

s6, starting the vertical hydraulic jack, and adjusting the vertical height and the verticality of the template on the outer side of the box girder again;

s7, starting the longitudinal hydraulic jack, and longitudinally adjusting the template on the outer side of the box girder; starting the transverse hydraulic jack, transversely adjusting the box girder outer side template, and pressing the box girder outer side template and the water-stopping rubber strip on the side surface of the precast girder pedestal;

s8, mounting a bottom support pad of the template on the outer side of the box girder;

s9, releasing the support of the die assembling and disassembling trolley on the outer die plate of the box girder;

and S10, repeating S1-S9 until all the box girder outer side templates are assembled.

In order to solve the technical problem, the invention also provides a method for disassembling the outer side template of the box girder, which comprises the following steps,

s1, removing the connection and fixation between the outer side templates of the box girders;

s2, starting the mould assembling and disassembling trolley, moving the mould assembling and disassembling trolley to the position below the box girder outer side template to be disassembled, and finishing the alignment of the mould assembling and disassembling trolley and the box girder outer side template;

s3, starting the vertical hydraulic jacks to enable the top surfaces of the vertical top rods of the plurality of vertical hydraulic jacks to be in the same plane, and then controlling the top surfaces of the plurality of vertical top rods to be in contact with the supporting points of the box girder outer side template;

s4, removing the support of the bottom support pad on the outer template of the box girder;

s5, starting the vertical hydraulic jack to enable the vertical ejector rods to descend synchronously, enabling the box girder outer side template to fall down to complete demolding, supporting the box girder outer side template on the vertical ejector rods, and moving the box girder outer side template to an appointed position by the mold assembling and disassembling trolley;

and S6, repeating S2-S5 until all the box girder outer side templates are completely removed.

The invention has the following beneficial effects:

when the device is applied, the die assembling and disassembling trolley can carry a box girder outer side template to be transferred between a prefabricated beam pedestal and a template storage area, and can realize that the box girder outer side template is close to the side surface of the prefabricated beam pedestal through the longitudinal movement, transverse movement and turning functions of the moving mechanism to realize primary alignment, the box girder outer side template can be supported on the vertical ejector rods, the vertical ejector rods can stretch in the direction perpendicular to the top surface of the supporting plate, the longitudinal ejector rods stretch to drive the supporting plate to longitudinally translate, and the transverse ejector rods stretch to drive the supporting plate to transversely translate, so that the vertical ejector rods can realize the vertical adjustment of the box girder outer side template, the longitudinal ejector rods can realize the longitudinal adjustment of the box girder outer side template, and the transverse ejector rods can realize the transverse adjustment of the box girder outer side template, thereby facilitating the adjustment and alignment of the box girder outer side template, realize the stagnant water rubber strip between case roof beam outside template segment, stagnant water rubber strip between case roof beam outside template and the precast beam pedestal can automatic compression, realize the accurate counterpoint and assemble of case roof beam outside template, make the counterpoint installation of case roof beam outside template become simple light, assemble the precision height, degree of automation is high, and install and remove the mould dolly and can realize that case roof beam outside template steadily falls under the dead weight effect, accomplish the drawing of patterns automatically, large-scale template drawing of patterns difficulty has been solved, work efficiency and security have been improved, the problem of current case roof beam outside template assembly difficulty has been solved promptly conscientiously.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic longitudinal travel view of a mold assembling and disassembling trolley provided by an embodiment of the invention;

FIG. 2 is a lateral driving schematic of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of FIG. 2;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a schematic view of the structure of the elevating mechanism of FIG. 1;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural diagram of the formwork assembling and disassembling trolley shown in FIG. 1 in the forward direction for assembling and disassembling the formwork outside the box girder;

fig. 8 is a schematic side structure view of the form mounting and dismounting trolley shown in fig. 1 for mounting and dismounting the outer side form of the box girder.

The reference numbers are as follows:

100. assembling and disassembling the mould trolley;

10. a frame; 11. a stringer; 111. channel steel on the outer side of the longitudinal beam; 112. channel steel on the inner side of the longitudinal beam; 12. a cross beam; 121. channel steel at the outer side of the beam; 122. channel steel at the inner side of the cross beam;

20. a moving mechanism; 21. a rotating shaft; 211. a groove; 22. a wheel housing; 23. a wheel; 24. a drive motor; 25. a steering hydraulic jack; 251. a steering ejector rod; 26. an annular positioning plate; 27. an annular backing plate;

31. a longitudinal hydraulic jack; 311. a longitudinal ejector rod; 32. a transverse hydraulic jack; 321. a transverse ejector rod; 33. a vertical hydraulic jack; 331. a vertical ejector rod;

40. a support plate;

50. a box girder outer side template; 51. a bottom support pad; 52. a template main supporting leg; 53. supporting a top beam;

60. a sliding-aid plate;

70. a linkage rod;

80. a step-up mechanism; 81. a horizontal support frame; 82. a vertical support frame.

90. Prefabricating a beam pedestal; 91. a connecting flange; 92. a web panel; 93. sealing up the rubber strip; 94. prefabricating a box girder; 95. and (4) a pull rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The invention provides a die assembling and disassembling trolley for outer die plates of box girders, which is shown in figures 1 to 8 and comprises a frame 10, a moving mechanism 20, a longitudinal hydraulic jack 31, a transverse hydraulic jack 32 and a vertical hydraulic jack 33; the two opposite sides of the top of the frame 10 are provided with bearing plates 40, and the bearing plates 40 can horizontally translate; the moving mechanism 20 is installed on the frame 10, and the moving mechanism 20 is used for driving the frame 10 to move longitudinally, transversely and turn; the longitudinal hydraulic jack 31 is hinged on the frame 10, the longitudinal hydraulic jack 31 is provided with a longitudinal ejector rod 311, the longitudinal ejector rod 311 is hinged with the bearing plate 40, and the longitudinal ejector rod 311 stretches and retracts to drive the bearing plate 40 to longitudinally translate; the transverse hydraulic jack 32 is hinged on the frame 10, the transverse hydraulic jack 32 is provided with a transverse ejector rod 321, the transverse ejector rod 321 is hinged with the bearing plate 40, and the stretching of the transverse ejector rod 321 is used for driving the bearing plate 40 to transversely translate; the vertical hydraulic jack 33 is arranged on the bearing plate 40, the vertical hydraulic jack 33 is provided with a vertical ejector rod 331, and the vertical ejector rod 331 can extend and retract along the direction perpendicular to the top surface of the bearing plate 40.

During application, the die-assembling and disassembling trolley 100 can be used for assembling and disassembling the box girder outer die plate 50, and corresponding preparation work is needed before the box girder outer die plate 50 is assembled.

For example, the box girder outer side formwork 50 may be manufactured in sections, and the sectioned box girder outer side formwork 50 may be transported to a formwork processing and stacking yard near the precast girder pedestal 90, so as to adjust the box girder outer side formwork 50 and try to assemble the sections; it should be noted that, when the box girder outer side formwork 50 is designed and manufactured, it should be ensured that the main formwork leg 52 is in a vertical state when the box girder outer side formwork 50 is installed, the supporting cross beam 53 at the bottommost of the formwork is in a horizontal state, the bottom of the supporting cross beam 53 is a horizontal plane, and the width is preferably more than 10 cm.

When the box girder outer side templates 50 of adjacent sections are assembled in a trial mode, bolt holes between the connecting flanges 91 are required to be aligned, connecting bolts can be smoothly installed, and staggered platforms between the adjacent box girder outer side templates 50 meet requirements; when the box girder outer side formworks 50 are assembled in an trying mode, the box girder outer side formworks 50 of adjacent sections are not connected, the bottom supporting pads 51 are adjusted to be in a retraction state, the height requirement from the bottom surface of the supporting top cross beam 53 to the ground is larger than the height of the die assembling and disassembling trolley 100, and the die assembling and disassembling trolley 100 can enter and exit from the bottoms of the box girder outer side formworks 50.

Then the mould assembling and disassembling trolley 100 is adjusted to the initial working state, for example, the longitudinal hydraulic jack 31 cylinder is filled with oil and lifted for half of the stroke, the transverse hydraulic jack 32 cylinder is filled with oil and lifted for half of the stroke, and the moving mechanism 20 controls the mould assembling and disassembling trolley 100 to be in the longitudinal walking mode.

The method for installing the box girder outer side formwork 50 is as follows:

s1, starting the mould assembling and disassembling trolley 100, moving the mould assembling and disassembling trolley 100 to the position below the box girder outer side template 50 to be installed, and finishing the alignment of the mould assembling and disassembling trolley 100 and the box girder outer side template 50; at this time, various obstacles should be removed to ensure that the driving route of the die assembling and disassembling trolley 100 is smooth, the bearing capacity of the foundation meets the driving requirement of the vehicle, the alignment operation of the die assembling and disassembling trolley 100 is ensured to be longitudinally parallel to the longitudinal direction of the box girder outer side template 50, the vertical hydraulic jack 33 is aligned to the supporting cross beam 53 of the box girder outer side template 50, the gravity center of the box girder outer side template 50 is positioned in the plane of the frame 10, and the gravity center of the box girder outer side template 50 is close to the plane center of the frame 10 as much as possible.

S2, starting the vertical hydraulic jacks 33 to enable the top surfaces of the vertical top rods 331 of the plurality of vertical hydraulic jacks 33 to be in the same plane, then controlling the plurality of vertical top rods 331 to lift the box girder outer side formwork 50, and transporting the box girder outer side formwork 50 to a position to be installed; it should be noted that the lifting height of the box girder outer formworks 50 is about 50mm to 300mm at this time, and the lifting height of the single vertical ejector rod 331 can be adjusted to adjust the posture of the box girder outer formworks 50, thereby ensuring that the supporting cross beams 53 of the box girder outer formworks 50 are in a horizontal state.

In the process of controlling the die assembling and disassembling trolley 100 to move, the longitudinal direction of the die assembling and disassembling trolley 100 and the longitudinal direction of the box girder outer side template 50 are basically parallel to the side surface of the precast girder pedestal 90, the bottom of the web plate panel 92 of the first box girder outer side template 50 is 0-30 mm away from the side surface of the precast girder pedestal 90, and the longitudinal distance between the end point of the box girder outer side template 50 and a preset installation point is 0-30 mm.

When the alignment of the adjacent box girder outer side formworks 50 is realized, the bottom of the web panel 92 of the box girder outer side formwork 50 is still ensured to be 0-30 mm away from the side surface of the precast girder pedestal 90, and the longitudinal distance of the end part of the adjacent box girder outer side formwork 50 is enabled to be 0-30 mm.

It should be noted that in the process of moving the die assembling and disassembling trolley 100 for loading the box girder outer side template 50, the speed should be controlled to be 0-6 m/min to ensure the slow movement when aligning with the precast girder pedestal 90; when the mold assembling and disassembling trolley 100 is used for loading the box girder outer side template 50 to be close to the precast girder pedestal 90, if one end of the box girder outer side template 50 is close to the precast girder pedestal 90 and meets the requirement, but the other end of the box girder outer side template is far from the precast girder pedestal 90 and does not meet the requirement, the traveling mechanism 20 of the mold assembling and disassembling trolley 100 is controlled to be adjusted to be in a transverse moving state, the single-end transverse moving of the box girder outer side template 50 loaded by the mold assembling and disassembling trolley 100 is realized, so that one end of the box girder outer side template 50 far from the precast girder pedestal 90 is close to the precast girder pedestal 90 until the plane position of the box girder outer side template 50 meets the requirement, and the preliminary azimuth.

S3, adjusting the height and the verticality of the box girder outer template 50 by using the vertical hydraulic jack 33 until the installation requirement is met;

s4, starting the transverse hydraulic jack 32 to push the box girder outer side template 50 to move transversely until the box girder outer side template 50 contacts with the side surface of the precast girder pedestal 90; specifically, the horizontal hydraulic jack 32 drives the supporting plate 40 to perform horizontal translation, and the vertical hydraulic jack 33 is arranged on the supporting plate 40, so that the horizontal translation fine adjustment operation of the box girder outer side formwork 50 is realized, and when the box girder outer side formwork 50 just contacts the side surface of the precast girder pedestal 90, the pushing of the horizontal hydraulic jack 32 on the supporting plate 40 is stopped.

If there is a case where one end of the box girder outer formworks 50 contacts the side of the precast girder pedestal 90 and the other end leaves the side of the precast girder pedestal 90, the lateral hydraulic jacks 32 that leave the one end may be controlled to continue the jacking work until the box girder outer formworks 50 completely contact the precast girder pedestal 90.

S5, starting the longitudinal hydraulic jack 31 to push the box girder outer side template 50 to move longitudinally to a required position; specifically, the longitudinal hydraulic jack 31 drives the supporting plate 40 to perform longitudinal translation, so that the longitudinal translation fine adjustment operation of the box girder outer side formwork 50 is realized, and when the end of the box girder outer side formwork 50 reaches a preset position, the operation is stopped, and the fine adjustment of the longitudinal position of the box girder outer side formwork 50 is completed.

For example, when the installed box girder outer formworks 50 are first-section box girder outer formworks 50 on one side of the prefabricated box girder 94, the longitudinal hydraulic jacks 31 are started to push the box girder outer formworks 50 to move longitudinally to the designed installation position; when the installed box girder outer formworks 50 are box girder outer formworks 50 of adjacent sections of the installed box girder outer formworks 50 on one side of the prefabricated box girder 94, the longitudinal hydraulic jacks 31 are activated to push the box girder outer formworks 50 to move longitudinally into contact with the adjacent installed box girder outer formworks 50.

S6, starting the vertical hydraulic jack 33, and adjusting the vertical height and the verticality of the box girder outer side template 50 again; when the installed box girder outer formworks 50 are box girder outer formworks 50 of adjacent sections of the installed box girder outer formworks 50 on one side of the prefabricated box girder 94, the bolt hole alignment on the connecting flange 91 plate of the box girder outer formworks 50 of the adjacent sections is completed.

S7, starting the longitudinal hydraulic jack 33, and longitudinally adjusting the box girder outer side template 50; and starting the transverse hydraulic jack 32, transversely adjusting the box girder outer side template 50, and pressing the box girder outer side template 50 and the water stop rubber strip 93 on the side surface of the precast girder pedestal 90.

It should be noted that, when the alignment of the adjacent section box girder outer formworks 50 is controlled, the end faces of the adjacent section box girder outer formworks 50 should be controlled to contact with each other until the water-stop rubber strips 93 between the adjacent section box girder outer formworks are pressed together, and the bolt installation on the connecting flange 91 of the adjacent section box girder outer formworks 50 is completed.

S8, mounting the bottom support pad 51 of the box girder outer side template 50; if the bottom support pad 51 of the box girder outer formwork 50 is an adjustable bottom support, the height of the adjustable bottom support is adjusted, so that the bottom support pad 51 can be supported on the ground.

S9, removing the support of the die trolley 100 for the box girder outer side template 50; namely, the vertical hydraulic jack 33 withdraws the vertical top rod 331 and releases the support of the template 50 outside the box girder so as to remove the template assembling and disassembling trolley 100.

S10, repeating S1-S9 until all the box girder outer side templates 50 are assembled; the installation sequence can be that the box girder outer side template 50 on one side of the precast girder pedestal 90 is completed by sections, and then the box girder outer side template 50 on the other side of the precast girder pedestal 90 is installed; the box girder outer side formworks 50 can also be symmetrically installed on both sides of the precast girder pedestal 90, and after the box girder outer side formworks 50 are installed in place, the pull rods 95 can be positioned and reinforced by arranging the box girder outer side formworks 50 on both sides of the precast girder pedestal 90, or the box girder outer side formworks 50 can be fixedly connected with the ground.

And the disassembling method of the box girder outer side formwork 50 is as follows:

s1, removing the connection and fixation between the outer side templates 50 of the box girders; for example, after the concrete pouring of the box girder is completed and the compressive strength of the concrete meets the design requirement, the tension rods 95 of the outer formworks 50 of the box girder are removed, the bolts are connected between the adjacent outer formworks 50 of the box girder on the same side, and the end formworks at the end parts of the box girder are removed, so that the outer formworks 50 of the box girder are not hindered when being removed.

S2, starting the mould assembling and disassembling trolley 100, moving the mould assembling and disassembling trolley 100 to the position below the box girder outer side template 50 to be disassembled, and finishing the alignment of the mould assembling and disassembling trolley 100 and the box girder outer side template 50; for example, the die assembling and disassembling trolley 100 longitudinally runs into the bottom of the first section of box girder outer side template 50 to be disassembled at the end of the precast girder pedestal 90, the die assembling and disassembling trolley 100 and the box girder outer side template 50 are aligned, the longitudinal direction of the die assembling and disassembling trolley 100 is parallel to the longitudinal direction of the box girder outer side template 50, two vertical hydraulic jacks 33 at each end are respectively aligned to one supporting cross beam 53 at two ends of the box girder outer side template 50, and the gravity center of the box girder outer side template 50 is positioned in the plane of the frame 10 and is as close to the plane center of the frame 10 as possible.

And S3, starting the vertical hydraulic jacks 33 to enable the top surfaces of the vertical top rods 331 of the plurality of vertical hydraulic jacks 33 to be in the same plane, and then controlling the top surfaces of the plurality of vertical top rods 331 to be in contact with the supporting points of the box girder outer side formworks 50, specifically, the top surfaces of the vertical top rods 331 to be in contact with the lower surfaces of the supporting top cross beams 53.

S4, removing the support of the bottom support pad 51 to the box girder outer side template 50; for example, the height of the adjustable bottom support of the bottom support pad 51 is adjusted to enable the adjustable bottom support to retract and leave the ground, the weight of the template 50 on the outer side of the box girder falls on the die assembling and disassembling trolley 100, and at the moment, the bottom surface of the adjustable bottom support is adjusted to be 100-500 mm away from the ground.

S5, starting the vertical hydraulic jack 33 to enable the plurality of vertical ejector rods 331 to descend synchronously, enabling the box girder outer side template 50 to fall down to finish demoulding, enabling the box girder outer side template 50 to be supported on the plurality of vertical ejector rods 331 at the moment, and moving the box girder outer side template 50 to a specified position by the mould assembling and disassembling trolley 100; for example, the four vertical hydraulic jacks 33 are synchronously started, the oil cylinders return oil to enable the box girder outer side template 50 to slowly descend under the action of self weight, the descending height is about 50-500 cm, then the traveling system of the die assembling and disassembling trolley 100 is switched to a transverse moving mode, the transverse moving is slowly carried out, the box girder outer side template 50 is driven to transversely move for a certain distance of about 10-500 mm, and the demoulding is completed.

S6, repeating S2-S5 until all the box girder outer side templates 50 are completely removed; the box girder outer formworks 50 are removed in sequence from one end of the precast girder to the other end thereof in sections.

The frame 10 is mainly used for supporting and supporting, and the shape is not limited in particular, but in order to improve the design rationality of the frame 10, the frame 10 of the present invention is shown in fig. 1, and the frame 10 comprises two parallel opposite longitudinal beams 11 and two parallel opposite cross beams 12, a moving mechanism 20 is arranged at each end of the two longitudinal beams 11, the two cross beams 12 are arranged between the two longitudinal beams 11, and a supporting plate 40 is arranged above the two cross beams 12.

In this case, the frame 10 is connected to the side member 11 and the cross member 12 in a rectangular shape, so that the frame 10 has high stability and mechanical strength.

In order to further improve the mechanical strength of the frame 10, the side member 11 may include a side member outer channel 111 and a side member inner channel 112, and the side member outer channel 111 may be located outside the side member inner channel 112; the beam 12 comprises a beam outer side channel steel 121 and a beam inner side channel steel 122, and the beam outer side channel steel 121 is positioned on the outer side of the beam inner side channel steel 122; that is, the longitudinal beams 11 and the cross beams 12 are formed by combining inner and outer channel steel, so that the mechanical strength of the frame 10 can meet the transportation requirements of various box girder outer side formworks 50.

A certain distance should be maintained between the longitudinal beam outer channel 111 and the longitudinal beam inner channel 112, so that the longitudinal hydraulic jack 31 can be installed between the longitudinal beam outer channel 111 and the longitudinal beam inner channel 112.

The moving mechanism 20 is used for realizing the movement of the mold assembling and disassembling trolley 100, which has various realization modes, but because the weight of the box girder outer side template 50 is heavier, and the height of the bottom surface of the supporting top beam 53 of the box girder outer side template 50 from the ground is about 100cm, the overall height of the mold assembling and disassembling trolley 100 is required to be smaller, the mold assembling and disassembling trolley 100 is required to bear the box girder outer side template 50 to finish the close-distance preliminary alignment of the box girder outer side template 50 beside the precast beam pedestal 90, so that how to ensure that the moving mechanism 20 can adapt to the severe working environment is particularly important, in order to solve the problem, the moving mechanism 20 provided by the invention comprises a rotating shaft 21, a wheel housing 22, wheels 23, a driving motor 24 and a steering hydraulic jack 25 as shown in fig. 1 to fig. 3; one end of the rotating shaft 21 is fixedly connected with the wheel house 22, and the other end of the rotating shaft 21 is inserted into the longitudinal beam 11 from the vertical direction, so that the wheel house 22 can rotate by taking the rotating shaft 21 as a rotation center; the wheel 23 is arranged in the wheel cover 22, and the driving motor 24 drives the wheel 23 to rotate; the steering hydraulic jack 25 is hinged with the outer side face of the longitudinal beam 11, the steering hydraulic jack 25 is provided with a steering ejector rod 251, the steering ejector rod 251 is hinged with the wheel cover 22, and the steering ejector rod 251 stretches and retracts to drive the wheel cover 22 to rotate by 90 degrees at most.

The bearing capacity of the single wheel 23 is designed according to the weight of the box girder outer side template 50, the bearing capacity of the single wheel 23 is preferably designed to be 50-150 KN, and at the moment, in order to enhance the ground gripping force of the wheel 23, the wheel 23 can be preferably made of solid rubber wheels or steel wheel coated rubber, so that the contact force and the friction force between the wheel 23 and the ground are increased; in addition, the diameter of the wheels 23 is preferably 25-30 mm, so that the height of the die assembling and disassembling trolley 100 can be effectively reduced.

Referring to the direction shown in fig. 1, a steering hydraulic jack 25 is provided on the right side of the upper side member 11, the left end of the steering hydraulic jack 25 is hinged to the outer side surface of the upper side member 11, the steering push rod 251 can be extended and retracted in the horizontal direction, and the right end of the steering push rod 251 is hinged to the outer surface of the wheel house 22 through an ear plate.

As shown in fig. 1 and 3, when the steering stem 251 is in the maximum extension state, the axial direction of the rotation center of the wheel 23 is perpendicular to the longitudinal direction of the side member 11, that is, the longitudinal movement of the die carriage 100 can be achieved as long as all of the four moving mechanisms 20 are in this state.

As shown in fig. 2 and 3, the steering post rod 251 is in the maximum retraction state, so that the wheel housing 22, the wheel 23 and other components are pulled to rotate by 90 °, the axial direction of the rotation center of the wheel 23 is parallel to the longitudinal direction of the longitudinal beam 11, that is, the mold-assembling/disassembling trolley 100 can move transversely as long as the four moving mechanisms 20 are in this state.

Of course, the four moving mechanisms 20 are not necessarily in the same state, and for example, all the moving mechanisms 20 may be controlled to be in the traversing state, so that the moving mechanism 20 at the left end of the longitudinal beam 11 is in the stop state, and the moving mechanism 20 at the right end of the longitudinal beam 11 is in the start state, so that the single-end traversing and turning operation can be realized, that is, the operator only needs to perform proper operation to realize the correct traveling control of the die assembling and disassembling trolley 100.

In addition, in order to improve the assembly stability of the moving mechanism 20, in this embodiment, the moving mechanism 20 may further include an annular positioning plate 26 and an annular backing plate 27; at the moment, the rotating shaft 21 penetrates through the top surface of the longitudinal beam 11, one end of the rotating shaft 21, which penetrates out of the longitudinal beam 11, is provided with a groove 211, the groove 211 is arranged in a circle around the periphery of the rotating shaft 21, and after the annular positioning plate 26 is embedded into the groove 211, the positioning limitation of the rotating shaft 21 can be realized; the annular pad 27 is disposed between the bottom surface of the side member 11 and the top surface of the wheel house 22 and is sleeved outside the periphery of the rotating shaft 21, and the annular pad 27 has a smooth surface, so that the friction force applied to the wheel house 22 during horizontal rotation can be reduced after the annular pad 27 is added, and the rotation of the moving mechanism 20 can be smoother.

In order to ensure accurate fine adjustment control of the outer side template 50 of the box girder and ensure smooth and stable movement of the supporting plate 40, as shown in fig. 6, the die assembling and disassembling trolley 100 further comprises a sliding-assistant plate 60, the sliding-assistant plate 60 is arranged on the top surface of the longitudinal beam 11, the top surface of the sliding-assistant plate 60 is a smooth surface, and the supporting plate 40 is supported on the smooth surface, so that the friction force between the supporting plate 40 and the sliding-assistant plate 60 is greatly reduced, and important guarantee is provided for smooth and stable movement of the supporting plate 40.

The arrangement mode of the longitudinal hydraulic jacks 31 is as shown in fig. 1 and fig. 5, the longitudinal hydraulic jacks 31 are hinged to the same ends of the two longitudinal beams 11, and the longitudinal push rods 311 of the two longitudinal hydraulic jacks 31 are hinged to the same bearing plate 40; the die assembling and disassembling trolley 100 further comprises a linkage rod 70, and two ends of the linkage rod 70 are respectively hinged with the two bearing plates 40, so that the longitudinal ejector rod 311 is stretched to drive the two bearing plates 40 to synchronously perform longitudinal translation.

At the moment, the longitudinal hydraulic jack 31 is located between the longitudinal beam outer side channel steel 111 and the longitudinal beam inner side channel steel 112, is horizontally arranged and is arranged parallel to the longitudinal beam 11, the longitudinal hydraulic jack 31 can horizontally rotate around a hinge point between the longitudinal hydraulic jack 31 and the longitudinal beam 11, and the horizontal rotation range of the longitudinal hydraulic jack 31 is limited between the longitudinal beam outer side channel steel 111 and the longitudinal beam inner side channel steel 112.

For example, when the two longitudinal hydraulic jacks 31 synchronously push the longitudinal top rod 311 to the left, the left bearing plate 40 can perform longitudinal translation, and since the linkage rod 70 realizes the linkage of the left bearing plate 40 and the right bearing plate 40, the right bearing plate 40 performs synchronous longitudinal translation.

When the bearing plate 40 needs to perform unilateral longitudinal translation, the longitudinal hydraulic jack 31 on one side only needs to be stopped to work; for example, the upper longitudinal hydraulic jack 31 can be controlled to stop working, and then the lower longitudinal hydraulic jack 31 is controlled to extend out of the longitudinal top rod 311, so that the upper side of the supporting plate 40 can be controlled to be immovable and movable, that is, more possibilities are brought to the longitudinal fine adjustment of the box girder outer formwork 50.

The arrangement mode of the transverse hydraulic jacks 32 is as shown in figure 1, the transverse hydraulic jacks 32 are hinged on the two cross beams 12, the extension directions of the transverse push rods 321 of the two transverse hydraulic jacks 32 are the same, and the transverse push rods 321 of the two transverse hydraulic jacks 32 are respectively hinged with the two bearing plates 40.

When the two transverse hydraulic jacks 32 synchronously extend out of the transverse push rod 321, the two bearing plates 40 can be controlled to synchronously translate, if the two bearing plates 40 need to be controlled to asynchronously move, only different control modes are needed for each bearing plate 40 by each transverse hydraulic jack 32, and therefore more possibilities are brought for transverse fine adjustment of the box girder outer side template 50.

It should be noted that the lateral hydraulic jack 32 is disposed below the support plate 40, but for the sake of convenience in showing the structure of the lateral hydraulic jack 32, fig. 1 is a perspective view of the support plate 40, so that the lateral hydraulic jack 32 can be shown in fig. 1.

At this time, the transverse hydraulic jack 32 is located between the beam outer side channel steel 121 and the beam inner side channel steel 122, is horizontally arranged and is arranged parallel to the beam 12, the transverse hydraulic jack 32 can horizontally rotate around a hinge point between the transverse hydraulic jack 32 and the longitudinal beam 12, and the horizontal rotation range of the transverse hydraulic jack 32 is limited between the beam outer side channel steel 121 and the beam inner side channel steel 122.

Therefore, the longitudinal hydraulic jack 31 and the transverse hydraulic jack 32 can horizontally realize a certain range of rotation, and the rotation of the two jacks can be mutually restricted so as to ensure that the rotation angles of the two jacks are in a proper range.

As shown in fig. 5 and 6, the die assembling and disassembling trolley 100 of the present invention further includes a raising mechanism 80, the raising mechanism 80 is detachably mounted on the support plate 40, and the vertical hydraulic jack 33 is provided on the top of the raising mechanism 80.

That is, when the height of the box girder outer side formwork 50 needs to be lifted is high, the box girder outer side formwork can be used in cooperation with the heightening mechanism 80, and after the heightening mechanism 80 is additionally arranged, the lifting stroke of the vertical hydraulic jack 33 is substantially equal to that of the box girder outer side formwork, so that the assembly and disassembly requirements of the box girder outer side formwork 50 under more conditions are met.

Specifically, the elevating mechanism 80 may include a horizontal support frame 81 and vertical support frames 82 connected to two opposite sides of the horizontal support frame 81, the two support plates 40 are both supported by the vertical support frames 82, and the top of the vertical support frame 82 is provided with a vertical hydraulic jack 33; the advantage of this structure is that the mechanical strength of the raising mechanism 80 can be ensured to meet the support requirement for the box girder outer formworks 50.

It should be noted that the longitudinal direction, the transverse direction, and the vertical direction are referred to with respect to the state in which the die carriage 100 is normally used, for example, the die carriage 100 is already placed on a horizontal ground, and if the die carriage 100 travels in the longitudinal direction, the die carriage 100 travels in the transverse direction on the horizontal plane, and the so-called vertical direction is a direction perpendicular to the plane on which the die carriage 100 travels.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A die assembling and disassembling trolley for an outer die plate of a box girder, which is characterized in that,

the hydraulic lifting device comprises a frame, a moving mechanism, a longitudinal hydraulic jack, a transverse hydraulic jack and a vertical hydraulic jack;

bearing plates are arranged on two opposite sides of the top of the frame and can horizontally translate;

the moving mechanism is arranged on the frame and is used for driving the frame to move longitudinally, transversely and turn;

the longitudinal hydraulic jack is hinged to the frame and provided with a longitudinal ejector rod, the longitudinal ejector rod is hinged to the bearing plate, and the longitudinal ejector rod stretches and retracts to drive the bearing plate to longitudinally translate;

the transverse hydraulic jack is hinged to the frame and provided with a transverse ejector rod, the transverse ejector rod is hinged to the bearing plate, and the transverse ejector rod stretches and retracts to drive the bearing plate to transversely translate;

the vertical hydraulic jack is arranged on the bearing plate and provided with a vertical ejector rod, and the vertical ejector rod can stretch in the direction perpendicular to the top surface of the bearing plate.

2. The mold assembling and disassembling trolley according to claim 1, wherein said frame comprises two parallel opposing longitudinal beams and two parallel opposing cross beams, said moving mechanism is provided at each end of said two longitudinal beams, said two cross beams are disposed between said two longitudinal beams, and said support plate is provided above said two cross beams.

3. The die-assembling and disassembling trolley according to claim 2,

the moving mechanism comprises a rotating shaft, a wheel cover, wheels, a driving motor and a steering hydraulic jack;

one end of the rotating shaft is fixedly connected with the wheel housing, and the other end of the rotating shaft is inserted into the longitudinal beam from the vertical direction, so that the wheel housing can rotate by taking the rotating shaft as a rotating center;

the wheels are arranged in the wheel covers, the driving motor is arranged outside the wheel covers, and the driving motor drives the wheels to rotate;

the steering hydraulic jack is hinged to the outer side face of the longitudinal beam and provided with a steering ejector rod, the steering ejector rod is hinged to the wheel housing, and the steering ejector rod stretches and retracts to drive the wheel housing to rotate by 90 degrees at most.

4. The mold assembling and disassembling trolley according to claim 2, further comprising a sliding assisting plate, wherein the sliding assisting plate is arranged on the top surface of the longitudinal beam, the top surface of the sliding assisting plate is a smooth surface, and the supporting plate is supported on the smooth surface.

5. The die-assembling and disassembling trolley according to claim 2,

the same end of each longitudinal beam is hinged with the longitudinal hydraulic jack, and the longitudinal push rods of the two longitudinal hydraulic jacks are hinged with the same bearing plate;

the die assembling and disassembling trolley further comprises a linkage rod, wherein two ends of the linkage rod are respectively hinged with the two bearing plates, so that the longitudinal ejector rod stretches and retracts to drive the two bearing plates to synchronously perform longitudinal translation.

6. The die assembling and disassembling trolley according to claim 2, wherein the transverse hydraulic jacks are hinged to the two cross beams, the stretching directions of the transverse push rods of the two transverse hydraulic jacks are the same, and the transverse push rods of the two transverse hydraulic jacks are hinged to the two bearing plates respectively.

7. The mold assembling and disassembling trolley according to claim 2, further comprising a raising mechanism detachably mounted on the supporting plate, and the vertical hydraulic jack is arranged at the top of the raising mechanism.

8. The die assembling and disassembling trolley according to claim 7, wherein the elevating mechanism comprises a horizontal support frame and vertical support frames connected to two opposite sides of the horizontal support frame, the vertical support frames are supported on the two support plates, and the top of each vertical support frame is provided with the vertical hydraulic jack.

9. A method for installing an outer template of a box girder is characterized by comprising the following steps,

s1, starting the mould assembling and disassembling trolley, moving the mould assembling and disassembling trolley to the position below the box girder outer side template to be installed, and finishing the alignment of the mould assembling and disassembling trolley and the box girder outer side template;

s2, starting the vertical hydraulic jacks to enable the top surfaces of the vertical ejector rods of the vertical hydraulic jacks to be in the same plane, then controlling the vertical ejector rods to jack the box girder outer side formwork, and transporting the box girder outer side formwork to a position to be installed;

s3, adjusting the height and the verticality of the template on the outer side of the box girder by using the vertical hydraulic jack until the installation requirement is met;

s4, starting the transverse hydraulic jack, pushing the box girder outer side template to transversely move until the box girder outer side template is contacted with the side surface of the precast girder pedestal;

s5, starting the longitudinal hydraulic jack, and pushing the box girder outer side template to move longitudinally to a required position;

s6, starting the vertical hydraulic jack, and adjusting the vertical height and the verticality of the template on the outer side of the box girder again;

s7, starting the longitudinal hydraulic jack, and longitudinally adjusting the template on the outer side of the box girder; starting the transverse hydraulic jack, transversely adjusting the box girder outer side template, and pressing the box girder outer side template and the water-stopping rubber strip on the side surface of the precast girder pedestal;

s8, mounting a bottom support pad of the template on the outer side of the box girder;

s9, releasing the support of the die assembling and disassembling trolley on the outer die plate of the box girder;

and S10, repeating S1-S9 until all the box girder outer side templates are assembled.

10. A method for disassembling an outer template of a box girder is characterized by comprising the following steps,

s1, removing the connection and fixation between the outer side templates of the box girders;

s2, starting the mould assembling and disassembling trolley, moving the mould assembling and disassembling trolley to the position below the box girder outer side template to be disassembled, and finishing the alignment of the mould assembling and disassembling trolley and the box girder outer side template;

s3, starting the vertical hydraulic jacks to enable the top surfaces of the vertical top rods of the plurality of vertical hydraulic jacks to be in the same plane, and then controlling the top surfaces of the plurality of vertical top rods to be in contact with the supporting points of the box girder outer side template;

s4, removing the support of the bottom support pad on the outer template of the box girder;

s5, starting the vertical hydraulic jack to enable the vertical ejector rods to descend synchronously, enabling the box girder outer side template to fall down to complete demolding, supporting the box girder outer side template on the vertical ejector rods, and moving the box girder outer side template to an appointed position by the mold assembling and disassembling trolley;

and S6, repeating S2-S5 until all the box girder outer side templates are completely removed.

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