Cast-in-place box culvert structure mold

Abstract

The utility model discloses a cast-in-place box culvert structure mould which comprises a bottom plate mould, a box culvert structure mould and a box culvert structure mould, the cross section of the inner formwork is in a U shape, the inner formwork is inversely buckled on the cast-in-place bottom plate, and the width of the cast-in-place bottom plate is larger than the distance between the two opposite outer side walls of the inner formwork; the cross section of the outer formwork is in a U shape, the outer formwork is inversely buckled on the outer side of the inner formwork and the outer side of the cast-in-place bottom plate, the bottom face of the cast-in-place bottom plate and the bottom faces of the two side plates of the outer formwork are located on the same horizontal plane, and a gap is reserved between the inner side wall of the outer formwork and the side face, on the same side, of the cast-in-place bottom plate. A reinforcing reinforcement cage is further arranged between the inner formwork and the outer formwork, and concrete is poured between the outer formwork and the inner formwork; the support is fixedly arranged in the inner formwork, a bolt is arranged at the bottom end of a vertical supporting frame in a threaded mode, and a rolling wheel assembly is further arranged at the bottom end of the vertical supporting frame. The mold can be conveniently operated on a construction site and is also convenient to demold.

Description

Technical Field

[0001] The utility model relates to the technical field of box culvert processing, and more specifically, to a cast-in-place box culvert structure mold. Background Art

[0002] A box culvert is a culvert constructed with reinforced concrete box sections. It consists of one or more square or rectangular sections, typically made of reinforced concrete. Box culvert construction typically involves cast-in-place construction. A base layer is set in an excavated trench, followed by a concrete cushion. Pre-fabricated rebar is then tied on-site, and internal and external formwork are set. For larger box culverts, the bottom slab and lower half of the side walls are typically cast first. Rebar for the upper side walls and roof is then tied, and internal and external formwork are set before the upper side walls and roof are cast. In the patent application number 202111389931.1, a box culvert mold and a box culvert production method are disclosed. The box culvert mold includes an outer mold and an inner mold, and a forming cavity is formed between the outer mold and the inner mold. A through groove is provided in the middle of the inner mold, and a transmission mechanism is provided in the through groove of the inner mold to directly guide the concrete from the top of the inner mold to the bottom of the inner mold; the transmission mechanism includes a guide pipe fixed in the inner mold, the guide pipe connects the top of the inner mold and the bottom of the inner mold, and a feed port is provided at the position of the guide pipe at the top of the inner mold. A material distribution box is provided at the bottom of the inner mold, and the material distribution box is provided in the through groove. The top of the material distribution box is connected to the material distribution pipe, and a material discharge chute is provided at the bottom of the material distribution box. However, in the above patent, after the box culvert is maintained, it is necessary to hoist the box culvert from the top of the outer mold, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The utility model provides a cast-in-situ box culvert structure mould, which can be conveniently operated on a construction site and is also easy to demould.

[0004] In order to achieve these purposes and other advantages of the present invention, a cast-in-place box culvert structure mold is provided, comprising:

[0005] Base plate formwork, which is used for cast-in-place base plates;

[0006] An inner formwork, having a U-shaped cross section, is inverted on the cast-in-place base plate, wherein the width of the cast-in-place base plate is greater than the distance between the two outer side walls of the inner formwork;

[0007] The outer formwork has a U-shaped cross section and is inverted on the outside of the inner formwork and the cast-in-place base plate, the bottom surface of the cast-in-place base plate and the bottom surfaces of the two side plates of the outer formwork are located on the same horizontal plane, and a gap is left between the inner side wall of the outer formwork and the side surface of the cast-in-place base plate on the same side, wherein a reinforcing steel cage is further provided between the inner formwork and the outer formwork, and concrete is poured between the outer formwork and the inner formwork;

[0008] The bracket is fixedly arranged inside the inner template to support the inner template.

[0009] Preferably, the cast-in-situ box culvert structure mold, the bracket includes:

[0010] The transverse support frame includes a first group of transverse support frames arranged on the upper side and a second group of transverse support frames arranged on the lower side, wherein both ends of the first group of transverse support frames and both ends of the second group of transverse support frames are respectively fixedly connected to the two inner side walls of the inner template;

[0011] A vertical support frame, comprising a first group of vertical support frames arranged on the left side and a second group of vertical support frames arranged on the right side, wherein the upper ends of the first group of vertical support frames on the left side and the second group of vertical support frames on the right side are fixedly connected to the top wall of the inner template, wherein the lower ends of the first group of vertical support frames on the left side and the second group of vertical support frames on the right side are threadedly connected to a bolt;

[0012] a scroll wheel assembly, comprising a first group of scroll wheels arranged on the left side and a second group of scroll wheels arranged on the right side, wherein the first group of scroll wheels and the second group of scroll wheels are both fixedly arranged below the second group of cross support frames;

[0013] The number of the transverse support frames is the same as the number of the vertical support frames, and the first group of transverse support frames and the second group of transverse support frames are fixedly connected to the corresponding first group of vertical support frames and the second group of vertical support frames.

[0014] Preferably, the cast-in-place box culvert structure mold further includes a first connecting rod and a second connecting rod extending axially along the inner formwork, each cross support frame in the first group of cross support frames is fixedly connected to the first connecting rod, and each cross support frame in the second group of cross support frames is fixedly connected to the second connecting rod.

[0015] Preferably, in the cast-in-place box culvert structure mold, the lower ends of the first group of vertical support frames on the left and the second group of vertical support frames on the right are both threadedly connected with a bolt, specifically: a circular groove is provided on the lower end surface of the first group of vertical support frames and the second group of support frames, and a thread corresponding to the bolt is provided on the inner wall of the circular groove, wherein, when the bolt is tightened and the bolt abuts against the upper surface of the cast-in-place base plate, a gap is left between the top end surface of the bolt and the bottom of the circular groove.

[0016] Preferably, the cast-in-place box culvert structure mold further includes a front material door and a rear material door, wherein a plurality of first grooves are provided on the front end face and the rear end face of the inner template, and protrusions corresponding to the first grooves are provided on the front material door and the rear material door; a buckle seat is provided at the edge of the outer wall of the outer template, and a buckle body is provided on the front material door and the rear material door, and the buckle body is buckled on the buckle seat to fix the front material door and the rear material door to the outer template.

[0017] Preferably, the cast-in-situ box culvert structure mold is provided with a plurality of through holes on the top of the outer template so as to pour concrete into the cavity between the outer template and the inner template.

[0018] The present invention has at least the following beneficial effects: the base plate provided by the present invention is a cast-in-place base plate, which can be cast-in-place using a base plate formwork. After the cast-in-place base plate is cured, an inner formwork is placed on the cast-in-place base plate, a U-shaped reinforcement cage is placed on the outer side of the inner formwork, an outer formwork is placed on the outer side of the reinforcement cage, and finally, concrete is poured between the inner and outer formworks. The cross-section of the concrete poured by the inner and outer formworks is an inverted U-shape. However, because the width of the cast-in-place base plate is greater than the distance between the two opposite outer side walls of the inner formwork, the bottom surface of the cast-in-place base plate and the bottom surfaces of the two side panels of the outer formwork are located on the same horizontal plane, and a gap is left between the inner side wall of the outer formwork and the side surface of the cast-in-place base plate on the same side. Therefore, the concrete poured in the cavity between the inner and outer formworks is partially located on the side edge of the cast-in-place base plate and partially located in the gap between the outer formwork and the side surface of the cast-in-place base plate. That is, the end of the side panel of the inverted U-shaped concrete poured by the inner and outer formworks is L-shaped. Such an arrangement enables the cast side panels and the cast-in-place bottom plate to be combined into a whole, forming a complete box culvert structure. Since a bracket is also provided inside the inner formwork, after the poured concrete is cured, the inner formwork can be easily pulled out of the box culvert structure by pulling the bracket. Since the outer formwork is in an inverted U-shape, the outer formwork can also be conveniently lifted from above the box culvert structure, thereby completing the removal of the outer formwork. In addition, since a bolt is threadedly connected to the bottom end of the vertical support frame, the vertical support frame can support the inner formwork by adjusting the bolt. At the same time, a rolling wheel assembly is also provided below the horizontal support frame. When the inner formwork needs to be pulled out of the box culvert structure, the bolt is adjusted so that the bolt does not contact the upper surface of the cast-in-place bottom plate. At this time, the inner formwork can be conveniently pulled out of the box culvert structure by the provided rolling wheel assembly.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the side structure of the cast-in-situ box culvert structure mold of the utility model;

[0021] Figure 2 It is a side structural diagram of the front material door in the mold of the cast-in-place box culvert structure of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0023] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0024] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The directions or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0025] like Figure 1 As shown, an embodiment of the utility model provides a cast-in-place box culvert structure mold, including: a bottom plate mold, which is used for the cast-in-place bottom plate 4; an inner formwork 2, whose cross section is U-shaped, inverted on the cast-in-place bottom plate 4, and the width of the cast-in-place bottom plate 4 is greater than the distance between the two opposite outer walls of the inner formwork 2; an outer formwork 1, whose cross section is U-shaped, inverted on the outside of the inner formwork 2 and the cast-in-place bottom plate 4, the bottom surface of the cast-in-place bottom plate 4 and the bottom surfaces of the two side plates of the outer formwork 1 are located on the same horizontal plane, and a gap is left between the inner side wall of the outer formwork 1 and the side surface of the cast-in-place bottom plate 4 on the same side, wherein a reinforcing steel cage 3 is further arranged between the inner formwork 2 and the outer formwork 1, and concrete is poured between the outer formwork 1 and the inner formwork 2; a bracket, which is fixedly arranged inside the inner formwork 2 to support the inner formwork 2.

[0026] In the above embodiment, the cast-in-place bottom plate 4 and the side panels and top panels are cast separately. After the bottom plate is cast and cured by the bottom plate formwork, the side panels and top panels are cast. The bottom plate formwork is not specifically limited in this embodiment, and can be implemented by a square frame surrounded by four vertical plates. After the cast-in-place bottom plate 4 is cured, the inner formwork 2 is placed on the cast-in-place bottom plate 4, and then a U-shaped reinforcement steel cage 3 is placed on the outside of the inner formwork 2, and then an outer formwork 1 is placed on the outside of the reinforcement steel cage 3. Finally, concrete is poured between the inner formwork 2 and the outer formwork 1, so that the cross-section of the concrete cast by the inner formwork 2 and the outer formwork 1 is an inverted U-shape. However, because the width of the cast-in-place base plate 4 is greater than the distance between the two opposite outer walls of the inner formwork 2, the bottom surface of the cast-in-place base plate 4 and the bottom surfaces of the two side plates of the outer formwork 1 are located on the same horizontal plane, and a gap is left between the inner side wall of the outer formwork 1 and the side surface of the cast-in-place base plate 4 on the same side. Therefore, the concrete poured in the cavity between the inner formwork 2 and the outer formwork 1 is partially located on the side edge of the cast-in-place base plate 4, and partially located in the gap between the outer formwork 1 and the side surface of the cast-in-place base plate 4. In other words, the end of the side panel of the inverted U-shaped concrete cast through the inner formwork 2 and the outer formwork 1 is L-shaped. This arrangement allows the cast side panels to be integrated with the cast-in-place base plate 4 to form a complete box culvert structure. During the specific configuration, the thickness of the box culvert structure can be specifically defined according to actual conditions, as long as the distance between the outer side wall of the inner formwork 2 and the side surface of the cast-in-place base plate 4 plus the distance between the inner side wall of the outer formwork 1 and the side surface of the cast-in-place plate equals the thickness of the side panels of the box culvert structure. Because brackets are installed inside the inner formwork 2, once the poured concrete is cured, the brackets can be pulled to easily remove the inner formwork 2 from the box culvert structure. Because the outer formwork 1 is an inverted U-shape, it can also be easily lifted from above the box culvert structure to remove it. Furthermore, to better facilitate the removal of the inner formwork 2 from the poured concrete, the corners of the side and top panels of the inner formwork 2 are curved, and the outer wall ends of the inner formwork 2 can also be curved.

[0027] In one specific embodiment, the cast-in-place box culvert structure mold, the bracket includes:

[0028] The transverse support frame 8 includes a first group of transverse support frames 7 arranged at the top and a second group of transverse support frames 6 arranged at the bottom, wherein both ends of the first group of transverse support frames 7 and the second group of transverse support frames 6 are respectively fixedly connected to the two inner side walls of the inner template 2;

[0029] The vertical support frame 11 includes a first group of vertical support frames 9 arranged on the left and a second group of vertical support frames 10 arranged on the right, the upper ends of the first group of vertical support frames 9 on the left and the second group of vertical support frames 10 on the right are fixedly connected to the top wall of the inner formwork 2, wherein the lower ends of the first group of vertical support frames 9 on the left and the second group of vertical support frames 10 on the right are threadedly connected with a bolt 12, and the specific arrangement is as follows: a circular groove 13 is provided on the lower end surface of the first group of vertical support frames 9 and the second group of vertical support frames 10, and a thread corresponding to the bolt 12 is provided on the inner wall of the circular groove 13, wherein when the bolt 12 is tightened and the bolt 12 abuts against the upper surface of the cast-in-place base plate 4, a gap is left between the top surface of the bolt 12 and the bottom of the circular groove 13;

[0030] A scroll wheel assembly 18, comprising a first set of scroll wheels 14 arranged on the left side and a second set of scroll wheels 17 arranged on the right side, wherein the first set of scroll wheels 14 and the second set of scroll wheels 17 are both fixedly arranged below the second set of cross support frames 6;

[0031] Among them, the number of the horizontal support frames 8 is the same as the number of the vertical support frames 11, and the first group of horizontal support frames 7 and the second group of horizontal support frames 6 are fixedly connected to the corresponding first group of vertical support frames 9 and the second group of vertical support frames 10.

[0032] Furthermore, it also includes a first connecting rod and a second connecting rod extending axially along the inner template 2, each cross support frame in the first group of cross support frames 7 is fixedly connected to the first connecting rod 16, and each cross support frame in the second group of cross support frames 6 is fixedly connected to the second connecting rod 15.

[0033] In the above embodiment, since a bolt is threadedly connected to the bottom end of the vertical support frame, the vertical support frame can support the inner formwork 2 by adjusting the bolt. At the same time, a rolling wheel assembly is provided below the horizontal support frame 8. When the inner formwork 2 needs to be pulled out of the box culvert structure, the bolt is adjusted so that the bolt does not contact the upper surface of the cast-in-place base plate 4. At this time, the inner formwork 2 can be conveniently pulled out of the box culvert structure by the provided rolling wheel assembly. The advantage of such a setting is that it can not only enable the bracket to firmly support the inner formwork 2, but also facilitate pulling the inner formwork 2 and the bracket out of the cast box culvert structure. When pulling the inner formwork 2 out of the cast box culvert structure, the pull rope can be tied to the bracket, or the bracket can be pulled with a hook, and then the inner formwork 2 can be pulled out by a trailer or other device.

[0034] In one specific embodiment, the cast-in-place box culvert structure mold further includes a front material door and a rear material door, wherein a plurality of first grooves 5 are provided on the front end face and the rear end face of the inner template 2, and protrusions corresponding to the first grooves are provided on the front material door and the rear material door; a buckle seat is provided at the edge of the outer wall of the outer template 1, and a buckle body is provided on the front material door and the rear material door, and the buckle body is buckled on the buckle seat to fix the front material door and the rear material door to the outer template 1.

[0035] In the above embodiment, the protrusions provided on the front and rear material doors are inserted into the first grooves provided on the front and rear surfaces of the inner template 2, respectively, and the buckle body is snapped onto the buckle seat, thereby firmly securing the front and rear material doors to the outer template 1 and inner template 2. The buckle body and buckle seat can be constructed using existing technology and are not specifically limited in this embodiment, nor are their specific structures described in detail. The dimensions of the front and rear material doors are configured to match those of the outer template.

[0036] It should be noted that the bottom surface of the front door can be provided with a second groove 20 to accommodate the cast-in-place bottom plate. In this way, the construction workers can cast the bottom plate in advance according to the plan, and only need to cast the side plates and top plate later. When the side plates and top plate are cast using the inner and outer formwork, the second groove 20 can fix the front door on the inner and outer formwork without being affected by the pre-cast bottom plate. Figure 2 shown.

[0037] It should also be noted that since the concrete box culvert structure cast by the inner formwork 2 and the outer formwork 1 is in sections, it is also necessary to connect the sections of the box culvert structure together to form a corridor-type box culvert structure. When casting the first section, it is necessary to fix the front material door and the rear material door at the same time. After the first section of the box culvert structure is cured, remove the front material door and the rear material door. When pulling the inner formwork 2 outward to prepare for casting the second section of the box culvert structure, do not pull the inner formwork 2 completely out, leave a small distance, and then hoist the reinforcement steel cage 3 outside the inner formwork 2. Use a crane to detach the outer formwork 1 from the box culvert structure above the first section of the box culvert structure, and then hoist the outer formwork 1 outside the inner formwork 2 and the reinforcement steel cage 3. At this time, a small part of the first section of the box culvert structure is left in the cavity at the rear end of the inner formwork 2 and the outer formwork 1. At this time, it is only necessary to fix the front material door at the front end, and there is no need to fix the rear material door. In this way, the first section of the box culvert structure and the second section of the box culvert structure can be seamlessly cast and connected.

[0038] In one specific embodiment, the cast-in-place box culvert structure mold is provided with a plurality of through holes on the top of the outer formwork 1 so as to pour concrete into the cavity between the outer formwork 1 and the inner formwork 2 .

[0039] In the above embodiment, the through holes provided in the outer formwork 1 facilitate the pouring of concrete into the cavity between the outer formwork 1 and the inner formwork 2. The number and size of the through holes are not specifically limited in this embodiment and can be determined based on actual conditions, as long as they facilitate the pouring of concrete.

[0040] The number of devices and processing scales described herein are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

[0041] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Cast-in-place box culvert structure mold, characterized by: include: Base plate formwork, which is used for cast-in-place base plates; An inner formwork, having a U-shaped cross section, is inverted on the cast-in-place base plate, wherein the width of the cast-in-place base plate is greater than the distance between the two outer side walls of the inner formwork; The outer formwork has a U-shaped cross section and is inverted on the outside of the inner formwork and the cast-in-place base plate, the bottom surface of the cast-in-place base plate and the bottom surfaces of the two side plates of the outer formwork are located on the same horizontal plane, and a gap is left between the inner side wall of the outer formwork and the side surface of the cast-in-place base plate on the same side, wherein a reinforcing steel cage is further provided between the inner formwork and the outer formwork, and concrete is poured between the outer formwork and the inner formwork; The bracket is fixedly arranged inside the inner template to support the inner template.

2. The cast-in-situ box culvert structure mold according to claim 1, characterized in that: The bracket comprises: The transverse support frame includes a first group of transverse support frames arranged on the upper side and a second group of transverse support frames arranged on the lower side, wherein both ends of the first group of transverse support frames and both ends of the second group of transverse support frames are respectively fixedly connected to the two inner side walls of the inner template; A vertical support frame, comprising a first group of vertical support frames arranged on the left side and a second group of vertical support frames arranged on the right side, wherein the upper ends of the first group of vertical support frames on the left side and the second group of vertical support frames on the right side are fixedly connected to the top wall of the inner template, wherein the lower ends of the first group of vertical support frames on the left side and the second group of vertical support frames on the right side are threadedly connected to a bolt; a scroll wheel assembly, comprising a first group of scroll wheels arranged on the left side and a second group of scroll wheels arranged on the right side, wherein the first group of scroll wheels and the second group of scroll wheels are both fixedly arranged below the second group of cross support frames; The number of the transverse support frames is the same as the number of the vertical support frames, and the first group of transverse support frames and the second group of transverse support frames are fixedly connected to the corresponding first group of vertical support frames and the second group of vertical support frames.

3. The cast-in-situ box culvert structure mold according to claim 2, characterized in that: It also includes a first connecting rod and a second connecting rod extending axially along the inner template, each cross support frame in the first group of cross support frames is fixedly connected to the first connecting rod, and each cross support frame in the second group of cross support frames is fixedly connected to the second connecting rod.

4. The cast-in-situ box culvert structure mold according to claim 2, characterized in that: The lower ends of the first group of vertical support frames on the left and the second group of vertical support frames on the right are both threadedly connected with a bolt, specifically: a circular groove is provided on the lower end surface of the first group of vertical support frames and the second group of support frames, and a thread corresponding to the bolt is provided on the inner wall of the circular groove, wherein when the bolt is tightened and the bolt abuts against the upper surface of the cast-in-place base plate, a gap is left between the top surface of the bolt and the bottom of the circular groove.

5. The cast-in-situ box culvert structure mold according to claim 1, characterized in that: It also includes a front material door and a rear material door, wherein a plurality of first grooves are provided on the front end face and the rear end face of the inner template, and protrusions corresponding to the first grooves are provided on the front material door and the rear material door; a buckle seat is provided at the edge of the outer wall of the outer template, and a buckle body is provided on the front material door and the rear material door, and the buckle body is buckled on the buckle seat to fix the front material door and the rear material door to the outer template.

6. The cast-in-situ box culvert structure mold according to claim 1, characterized in that: A plurality of through holes are provided on the top of the outer formwork so as to pour concrete into the cavity between the outer formwork and the inner formwork.

Images