CN214423211U - Multifunctional movable box-type internal mold - Google Patents

Abstract

The utility model discloses a multifunctional movable box type internal mold, the internal mold comprises a support rod piece, a structural rib, an internal mold steel plate and a hydraulic rod piece, the support rod piece is formed by mutually welding a flat rod, a vertical rod and an inclined rod, the structural rib is arranged on the support rod piece, the internal mold steel plate is arranged on the outer surface of the structural rib, the internal mold steel plate is formed by punching a whole steel plate and is of an inverted U shape, and the lower end of the internal mold steel plate can be tightly attached to a side wall which is poured once; the corner of the structural rib is broken to form a hinge point, the movable section of the structural rib below the hinge point is connected with the hydraulic rod piece, and the movable section can be driven to rotate by the extension and retraction of the hydraulic rod piece, so that the vertical section of the inner die can be removed and closed. The utility model relates to a rationally, the structure is light and handy, convenient to use and usage are various, and the centre form is collapsible to be ann and tear open, and accurate height, convenient operation easily popularize and implement.

Description

Multifunctional movable box-type internal mold

The technical field is as follows:

the utility model relates to a civil engineering technique especially relates to a multi-functional portable box centre form.

Background art:

with the adoption of box-type structures commonly used in culverts and channels of highways, construction modes are divided into an assembly type and a cast-in-place type, and a folding internal mold becomes a preferred scheme for cast-in-place construction.

The folding internal mold has the characteristics of mature technology, stable structure, shaping manufacture, convenient assembly and disassembly and the like.

However, through long-term construction practice, the common folding internal mold has some defects and needs to be improved.

Firstly, when using integral folding centre form monolithic casting, will take to open a hole at the bottom plate or hang the bottom plate earlier, pour bottom plate concrete, fall the bottom plate again, with the method of curb plate connection, the bottom plate is difficult to with concrete surface laminating completely, and has higher requirements for concrete performance, the centre form shifts out the degree of difficulty greatly, and folding position seam is many, and the outward appearance effect is unsatisfactory.

Secondly, when the upper segment and the lower segment are separately poured by using the sectional type folding internal mold, the internal mold needs to be erected on a poured bottom plate, the difficulty in accurate positioning is high, and the main problems are that the number of the produced construction joints and the number of the splicing joints at the folding position are large, and the appearance effect is also poor.

The utility model has the following contents:

the utility model discloses the technical problem that will solve is: overcomes the defects of the prior art, and provides a multifunctional movable box type internal mold which has reasonable design, light structure, convenient use and various purposes.

The technical scheme of the utility model is that:

a multifunctional movable box type internal mold comprises a support rod piece, a structural rib, an internal mold steel plate and a hydraulic rod piece, wherein the support rod piece is formed by mutually welding a flat rod, a vertical rod and an inclined rod, the structural rib is arranged on the support rod piece, the internal mold steel plate is arranged on the outer surface of the structural rib, the internal mold steel plate is formed by punching a whole steel plate and is in an inverted U shape, and the lower end of the internal mold steel plate can be tightly attached to a side wall which is poured at one time; the corner of the structural rib is broken to form a hinge point, the movable section of the structural rib below the hinge point is connected with the hydraulic rod piece, and the movable section can be driven to rotate by the extension and retraction of the hydraulic rod piece, so that the vertical section of the inner die can be removed and closed.

The hinge points are two and are respectively positioned at the lower left part and the lower right part of the construction rib. The lower extreme interval of support member is provided with the walking wheel, be provided with the reaction frame on the support member, the reaction frame with the one end of hydraulic rod spare is connected.

Support ribs are arranged on the upper end flat rod of the support rod piece at intervals, reinforcing ribs are arranged on the support ribs, the reinforcing ribs are provided with the construction ribs, and the shapes of the reinforcing ribs are matched with those of the construction ribs.

The utility model has the advantages that:

1. the utility model discloses required material of preparation, equipment are the design product, and it is easy to purchase or processing, and the structure is light, and the construction is swift, and the precision is higher. In addition, the walking wheels are installed at the bottom of the box type internal mold supporting frame, supporting legs and jacks are matched for lifting and descending, the top plate template is conveniently and quickly detached, and the box type internal mold supporting frame is convenient to pull.

2. The utility model discloses an interior mode steel sheet adopts whole punching press preparation, pastes to weld on network structure rib, establishes one stiffening rib at both ends (and centre). The side surface of the inner die is connected with a hydraulic rod, so that the deformation of the side plate during opening and closing is reduced, and no supporting rib is arranged at the top of the supporting frame, so that the integral rigidity of the inner die top plate is increased, the moving range of a rotating point of a corner part can be increased, and the side plate can be conveniently retracted.

3. The utility model discloses a structure net rib respectively establishes a commentaries on classics point at the corner position, breaks off between two sections adjacent net ribs of commentaries on classics point department, is the wedge opening, connects with the pin joint between the stiffening rib, and when the hydraulic stem drove the curb plate adduction or overhanging, the wedge opening only produced small deformation with the steel sheet junction, can break away from the concrete surface, and the compressive fatigue strength of steel sheet can satisfy the centre form ann in the life, tear the turnover requirement open.

4. The utility model discloses a festival section centre form, longitudinal length are greater than design length in proper amount, can make the centre form when carrying out the festival section order and pour or jump the storehouse method and pour, and one end or both ends stretch into the festival section of having pour to through the regulation of hydraulic stem, make the template paste tight its inner wall, be favorable to guaranteeing that the line type is smooth and easy, the seam levels, improves the outward appearance effect.

5. The utility model discloses when being used for assembled box culvert festival section horizontal segmentation construction with the centre form, centre form bearing structure can all remain basically, only needs to set up the base subaerial, demolishs the centre form walking wheel, installs hydraulic stem strong point-reaction frame in suitable position can.

6. The utility model discloses side form and end mould of prefabricated segment section can be held the side form that originally was used for cast-in-place construction and reform transform, welds the net rib of monoblock template on twice trapezoidal bracing, installs the walking wheel bottom the bracing, and the supporting is on indulging, the crossbeam of base. Each inclined strut is provided with a hydraulic rod which is supported on the inclined strut and a reaction frame arranged at a proper position on the longitudinal beam and the transverse beam, and the template is driven by the extension and contraction of the hydraulic rod to move so as to realize opening and closing. The improved horizontal full-hydraulic support template can be operated by only 1-2 persons, and is convenient and efficient to mount and dismount.

7. The setting method of the upper and lower section interfaces-the rabbet of the horizontal sectional prefabricated template comprises the steps of installing the socket template and the socket template on the designed position of the base, manufacturing the same section rabbet template on the same equipment, ensuring the accurate section size, ensuring the installation effect and ensuring the smooth rabbet line type.

8. The utility model discloses the horizontal direction of same unit (for one section if 3 complete sections are assembled) holds, the socket template also makes at same equipment, matches the prefabrication jointly with upper and lower segment, can guarantee that the seam of installation back level, two perpendicular directions is smooth and easy, and the outward appearance is effectual.

9. The utility model relates to a rationally, the structure is light and handy, convenient to use and usage are various, and the centre form is collapsible to be ann and tear open, and accurate height, convenient operation easily promote the implementation, and economic benefits is better.

Description of the drawings:

FIG. 1 is a schematic view of a transverse structure of a multifunctional mobile box-type inner mold;

FIG. 2 is a side view of the multifunctional movable box-type inner mold shown in FIG. 1;

FIG. 3 is a transverse structural diagram of the multifunctional movable box-type internal mold for horizontal prefabrication of a box culvert in sections;

fig. 4 is a top view structural diagram of the box culvert sectional horizontal type prefabricated structure shown in fig. 3.

The specific implementation mode is as follows:

example (b): referring to fig. 1-4, in the drawings, 1-limiting plate, 2-side mold support, 3-side mold, 4-fence, 5-end plate, 6-structural rib, 7-reinforcing rib, 8-supporting rod piece, 9-supporting rib, 10-hinge point, 11-primary pouring part, 12-foundation, 13-hydraulic rod, 14-connecting rod, 15-supporting rod piece walking wheel, 16-jack, 17-movable supporting leg, 18-secondary pouring part, 19-reaction frame, 20-jack, 21-base longitudinal beam, 22-socket bottom plate, 23-base cross beam, 24-side mold walking wheel and 25-preformed hole.

Manufacturing method for cast-in-situ box culvert segment internal mold

1. Manufacturing the support rod 8:

as shown in fig. 1 and 2, the section steel with a suitable specification is selected according to the design requirement, angle steel and square steel can be adopted, and the bottom support flat rod (a flat rod supported on a supporting leg or the ground) can be double angle steel or I-shaped steel according to the bearing capacity. And respectively welding a flat rod, a vertical rod and an inclined rod on the side surface, wherein the longitudinal length of the support frame is slightly shorter than that of the inner mold (each end is 0.1m shorter), and one flat ground is selected during welding or is carried out on a special platform.

And welding the horizontal flat rod, the vertical rod and the inclined rod to form a frame of the support frame. Each section is provided with three supporting cross sections.

2. Welding inner die steel plate mesh ribs:

as shown in figure 1, a whole steel plate is selected for blanking, and the steel plate is punched according to the designed size to form a n-shaped section.

Selecting section steel (angle steel or strip steel) with proper specification, welding latticed structural ribs 6 (three structural ribs are respectively welded on the top surface, the corner and the two side surfaces, and the total number of the structural ribs is three), arranging two hinge points, namely 'turning points 10', at each corner part, and connecting the three structural ribs into a whole.

Three reinforcing ribs 7 are arranged at two ends and the middle section, the ribs are in the same structure in a transverse subsection mode, square steel welding is conducted, the reinforcing ribs are used for connecting and detaching hydraulic rods on the side face of the inner die and dispersing the supporting weight on the ribs 6, deformation of a steel plate is reduced, if the supporting weight is small, the ribs 6 are accurately manufactured, and the reinforcing ribs 7 are not needed.

1. Assembling the inner die segments:

as shown in fig. 1 and 2:

(1) selecting a horizontal and firm ground, placing the top surface of the frame of the support formed by the support rod pieces 8 on the ground, determining the height of the walking wheels 15 on the bottom surface (the top surface at this time) according to the designed lifting range of the internal mold, accurately positioning and leveling the ground during installation, and considering the whole lifting height to be 0.1 m.

(2) Turning the support, enabling the walking wheels 15 to contact the ground, installing the supporting ribs 9 according to the designed positions, and connecting the supporting ribs with the top end of the support through welding or bolts.

(3) Lapping horizontal latticed construction ribs (hereinafter referred to as net ribs) of the inner die on the supporting ribs on the top surface of the bracket, accurately adjusting the positions, fixing the reinforcing ribs 7 and the construction ribs 6 by spot welding, and accurately leveling in the welding process.

(4) Connecting the vertical construction ribs with the horizontal construction ribs of the top surface, respectively, by turning points (hinge points).

(5) Selecting proper position to install hydraulic rod 13, and setting four hydraulic rods 13 in each section. One end of the hydraulic rod 13 is fixed on the vertical rods at the two ends of the bracket, the other end is connected on the vertical structural ribs 6 or the reinforcing ribs 7 at the two sides, and the two fixed ends are provided with hinged joints.

(6) Adjusting a hydraulic rod 13 to enable the positions of the net ribs on the two sides to reach the designed cross-face size, fixing the hydraulic rod 13, jacking the whole support by a jack 16 and a movable supporting leg 17, enabling a walking wheel 15 to be separated from the ground and accurately leveled, hoisting a stamped internal mold steel plate in place, using auxiliary measures, attaching the steel plate to each part of the net rib tightly, performing local spot welding, checking the section size and the flatness, welding the steel plate and the net rib from inside to outside one by one, adopting interval operation, avoiding centralized welding and reducing the thermal deformation of the steel plate.

4. Manufacturing an end die 5:

as shown in figure 1, the end die steel plate is made of a whole steel plate, structural ribs are arranged on the outer side of the steel plate, bolt holes are arranged at the contact parts of the end die steel plate and the inner die and the side die, and the end die steel plate and the bolt holes at the corresponding positions on the inner die and the side die are fixedly connected through bolts.

5. Manufacturing a side die 3:

as shown in fig. 1, the side-die steel plate is welded to the structural rib of the side-die holder 2, and the rail 4 is provided on the top of the holder. When the side die 3 is fixed, bolt holes are arranged at the contact positions of the inner side of the end part of the side die with the end die 5 and the inner die and are connected through bolts, and the middle part of the side die is fixed with the inner die through a pull rod bolt. Angle steel can also be arranged on the ground or the foundation on the outer side to be used as the limit plate 1, and the inclined strut is properly arranged for fixation.

6. Integrally installing and adjusting the template:

as shown in fig. 1, the internal mold is firstly supported by a jack, the travelling wheels are suspended, the internal mold is supported and leveled by the supporting legs, and the hydraulic rod of the internal mold is adjusted to make the cross section of the internal mold accord with the design size. And installing an end die, fixedly connecting the end die with the inner die, and then installing a side die, and fixedly connecting the side die with the side surface of the end die.

Checking the sizes and sealing conditions of all directions and all parts after the template is installed, adjusting errors, welding steel plates and mesh ribs after the template is qualified, arranging an attached vibrator external hanging point at the proper part of the mesh ribs outside the side die and on the side surface of the inner die, installing a vibrator, simulating vibration, checking whether the inner template and the outer template are loosened or not, shifting, supporting and stabilizing or not again, and correcting deviation in time. And removing the side plates and the end plates, retracting a little of the two side molds (simulating mold removal), putting down the supporting legs, pulling the segments to move integrally, and checking the stable condition.

Secondly, manufacturing of the prefabricated box culvert segment internal molds:

1. the cast-in-situ box culvert segment internal mold can be moved to a prefabricating field and used for horizontal segmental prefabrication of the assembly type box culvert segments. The upper and lower segments of the segment are produced in reverse U-shaped position, the upper segment is still installed in reverse U-shaped position, and the lower segment is installed in reverse U-shaped position after being turned over 180 deg. As shown in fig. 3 and 4.

2. The basic structure and the manufacturing method of the segment internal mold are the same as those of the segment internal mold.

(1) The centre form is fixed on the base that the shaped steel welded, and centre form length is design length, and end mould, side form integral erection are on a pair of trapezoidal bracing, and the walking wheel is installed to the bracing lower extreme, and the supporting is on base longeron 21 and base crossbeam 23.

(2) The inner mold corner part can be provided with hinged points only at the upper left and upper right rotating points, and the hydraulic rod is arranged as before.

(3) The bottom of the segment is provided with a socket bottom plate 20, the top is provided with a socket and a flat top plate, the socket bottom plate is arranged on the longitudinal and transverse supporting beams of the base, and the socket top plate at the top is fixed on the side plates and the end plates.

(4) The movement of the end plates and side plates is effected by means of the extension and retraction of hydraulic rods 20 connected to the diagonal braces and the reaction frame 19 (provided on the base longitudinal beams 21 and the base transverse beams 23).

(5) In order to ensure smooth butt joint of the bearing and the socket during installation of the segments, the bearing and socket templates of the same unit (for example, 3 segments are an installation unit) are produced on the same equipment, so that the segments are well matched during prefabrication, and the visual effect of installation is improved.

(6) The template for segment prefabrication is installed and debugged as before.

Thirdly, the using method comprises the following steps:

1. construction of cast-in-place box type sections:

(1) pouring the segmental floor and part of the wall:

the method comprises the steps of on-site manufacturing, installing bottom plate and partial side wall reinforcing steel bars, corresponding to a lofting position, erecting side molds and end molds, or erecting end molds and side molds of a pouring part after lofting, installing the reinforcing steel bars, completing the full-section side wall vertical reinforcing steel bars during installation, and avoiding influence on concrete slump due to over-dense reinforcing steel bars due to the fact that lap joint sections are not arranged as far as possible.

When pouring, the bottom plate part concrete is fully paved and compacted, the side wall part concrete is poured at intervals (based on the condition that the bottom plate concrete does not flow under the pressure and vibration of the side wall concrete), and the flatness, the cross section and the longitudinal dimension of the bottom plate are controlled to correspond to the dimension of the internal mold, and the straightness and the top elevation of the side wall part template are controlled during pouring.

(2) Pouring a top plate and the residual side walls:

and after the bottom plate and the lower side wall are demolded, integrally pulling the inner mold to a designed position and accurately aligning. The integral internal mold is jacked up firstly, the jack is adjusted to enable the templates on two sides to be attached to the inner side of a poured side wall, the end mold is attached to the end part of a poured bottom plate, the section size is checked, the side plate and the end plate of the internal mold are adjusted through moving and lifting, then the side plate and the end plate of the internal mold are loosened, the reinforcing steel bar begins to be installed (the reinforcing steel bar can be installed firstly and then the template is closed), after the installation is finished, the side plate and the end plate are closed, the attached vibrator is hung additionally, and the side mold, the size and the reinforcing steel bar protective layer are checked.

Pouring and vibrating the concrete layer by layer, and covering the top surface for curing.

The mold stripping sequence is as follows: firstly, loosening the connection between the segment end mould and the side mould and between the end mould and the internal mould steel plate, dismantling the side mould, removing the end plate, adjusting the jack, collecting a little of the two side plates and the corner to separate the two side plates and the corner from the concrete surface, placing the jack on the ground at the lower end of the flat rod at the lower part of the two ends of the support, adjusting and lifting the jack to be tightly propped against the lower end of the flat rod, adjusting the lead screw of the support leg to fall, moving the support leg out, adjusting the jack to enable the support to fall slowly. The walking wheels are contacted with the bottom plate, the jack is moved out, and then the inner mold is integrally pulled out.

2. And (3) space segment cast-in-place construction:

as with the construction method, in order to continuously carry out the construction of the upper part of the segment, the bottom plate and part of the side wall parts can be continuously poured in sequence during the construction arrangement, and the top plate and the rest of the side wall parts are constructed by adopting a 'skip method'.

3. And (3) middle section cast-in-place construction:

(1) firstly installing the reinforcing steel bars of the middle section side wall, detaching the inner mold end plate, simultaneously packing up the inner mold side wall part through the adjusting hydraulic rod, integrally pulling the inner mold to the middle section position, respectively extending the lap joint sections at the two ends of the inner mold into two sections which are poured in proper amount and centered, placing a jack between the bottom flat rod and the ground, integrally jacking the inner mold, and tightly attaching the two ends to the lower end of the poured section top plate.

(2) Adjusting a hydraulic rod, jacking the wall parts on the two sides of the inner die, tightly attaching the wall parts to the inner sides of the poured segmental side walls, arranging seams and settlement joints, hanging a vibrator, installing top plate steel bars and embedded parts after the side die is in place and supported stably, and pouring concrete.

(3) When the formwork is disassembled, the outer formwork is removed, the hydraulic rod is adjusted to enable the inner formwork side plate to contract inwards a little to be separated from the concrete surface, finally the jack at the lower end is tightly jacked, the supporting leg screw rod is adjusted to enable the supporting leg screw rod to be separated from the support and move out, the jack is loosened to enable the travelling wheel to contact the ground, meanwhile, the inner formwork top plate is separated from the concrete surface, and then the inner formwork is integrally pulled to the next working surface.

4. Horizontal sectional construction of assembled box culvert sections:

(1) template preparation:

and (3) polishing the bottom plate, the inner mold and the side mold on the pedestal, removing dust and rust, brushing a release agent on the pedestal to enable the large surface to be smooth and flat, and adjusting a hydraulic rod to enable the inner mold to be in place and fixed firstly.

(2) And manufacturing the segment integral reinforcement cage on the special high-precision formwork. The reinforcing steel bar formwork can be made of a segmental internal formwork supporting frame. On the basis of the original structure, according to a section design drawing, a positioning toothed plate and a supporting short rib are arranged on a support, and a lifting appliance is manufactured according to a framework structure.

(3) After the framework is formed and tested, a lifting tool is used for lifting a framework lifting point, force is slowly applied to separate the framework lifting point from a mold frame, the lifting process is kept at a constant speed and slowly moves, the collision of an inner mold is avoided when the framework is placed in the mold, the condition of a protective layer is checked after the framework is in place, deviation is corrected, and the missing cushion blocks are complemented.

And (3) starting a hydraulic rod, closing and fastening the 2 end dies and the 2 side dies, processing the joint, and hanging a vibrator.

(4) Checking the whole size and the sealing condition after die assembly, installing embedded parts, and pouring concrete in the preformed hole in a layered mode and maintaining.

(5) After the concrete reaches the designed form removal strength, the fasteners and the connecting bolts between the side forms and the end forms are respectively loosened, and the jacks are started to respectively pull out the side forms and the end forms. And starting a jack on the internal mold supporting frame, pulling the internal side template of the side mold inwards to separate the internal side template from the surface of the concrete, and simultaneously separating the corner part from the concrete.

(6) Hanging the hanging rings arranged on the top surface by a special lifting appliance (the upper sections of the segments are prefabricated in inverted U-shaped positions, the hanging rings are arranged on the top surface) or the reserved lifting holes on the side surfaces, and lifting and moving to a storage site.

For the lower section prefabricated by the U-shaped body position, a reserved hoisting hole is formed in the side surface, and the lower section is hoisted to the turnover frame by a special hoisting tool during hoisting, turned over for 180 degrees, changed into the U-shaped installation position and then hoisted to a storage site.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides a multi-functional portable box centre form, includes support member, structure rib, centre form steel sheet and hydraulic pressure member, characterized by: the support rod piece is formed by mutually welding a flat rod, a vertical rod and an inclined rod, the support rod piece is provided with the structural rib, the outer surface of the structural rib is provided with the inner die steel plate, the inner die steel plate is formed by stamping a whole steel plate and is n-shaped, and the lower end of the inner die steel plate can be tightly attached to a side wall which is poured at one time; the corner of the structural rib is broken to form a hinge point, the movable section of the structural rib below the hinge point is connected with the hydraulic rod piece, and the movable section can be driven to rotate by the extension and retraction of the hydraulic rod piece, so that the vertical section of the inner die can be removed and closed.

2. The multifunctional mobile box type internal mold according to claim 1, wherein: the hinge points are two and are respectively positioned at the lower left part and the lower right part of the construction rib.

3. The multifunctional mobile box type internal mold according to claim 1, wherein: the lower extreme interval of support member is provided with the walking wheel, be provided with the reaction frame on the support member, the reaction frame with the one end of hydraulic rod spare is connected.

4. The multifunctional mobile box type internal mold according to claim 1, wherein: support ribs are arranged on the upper end flat rod of the support rod piece at intervals, reinforcing ribs are arranged on the support ribs, the reinforcing ribs are provided with the construction ribs, and the shapes of the reinforcing ribs are matched with those of the construction ribs.

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