Vertical prefabricated box culvert mold

Abstract

The utility model discloses a vertical prefabricated box culvert mould which comprises a bottom mould, an inner mould assembly and an outer mould assembly, and the bottom mould is horizontally arranged on a ground foundation and used for being matched with the inner mould assembly and the outer mould assembly from the bottom to form a pouring bin. The inner mold assembly is arranged on the inner side of the bottom mold and comprises a plurality of vertically-arranged inner mold plates, the bottoms of the inner mold plates are arranged on a ground foundation through sliding rails, the multiple inner mold plates slide towards the outer side along the sliding rails to form a circumferential closed structure, and the multiple inner mold plates slide towards the inner side along the sliding rails to gather the inner mold plates towards the center to be away from the bottom mold for demolding. The outer mold assembly is arranged on the outer side of the bottom mold and comprises a plurality of vertically-arranged outer mold plates, the bottoms of the outer mold plates are all arranged on the ground foundation through sliding rails, the multiple outer mold plates can slide inwards along the sliding rails to form a circumferential closed structure, and the multiple outer mold plates can slide outwards along the sliding rails to be away from the corresponding inner mold plates and are used for demolding. By means of the box culvert mold, the technical problems that in the prior art, a box culvert mold is tedious in operation and poor in consistency can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering construction equipment, and more specifically, to a vertical precast culvert mold. Background Art

[0002] Prefabricated assembled culverts are prefabricated in a dedicated prefabrication yard, and then transported from the prefabrication site to the construction site for on-site installation and backfill of the abutment. Prefabricated assembled culverts have very broad prospects and are worthy of large-scale promotion.

[0003] In the prior art, the casting mold of the assembled culvert is relatively complex to operate. Before each casting, workers need to manually assemble the mold, then perform the closing of the inner and outer molds, and then carry out the casting. The whole process is not only time-consuming and laborious, and cannot be continuously produced for a long time, but also the errors caused by manual operation are difficult to ensure the consistency of the culverts. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertical precast culvert mold, which can solve the technical problems of cumbersome operation and poor consistency of the culvert mold in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions.

[0006] A vertical precast culvert mold includes a bottom mold, an inner mold assembly, and an outer mold assembly. The bottom mold is horizontally arranged on the ground foundation and is used to cooperate with the inner mold assembly and the outer mold assembly from the bottom to form a casting chamber.

[0007] The inner mold assembly is arranged inside the bottom mold and includes a plurality of vertically arranged inner templates. The bottoms of the inner templates are all arranged on the ground foundation through slide rails. When the plurality of inner templates slide outward along the slide rails, a circumferentially closed structure can be formed, which cooperates with the bottom mold to form a part of the inner wall of the casting chamber. When the plurality of inner templates slide inward along the slide rails, the inner templates can be gathered towards the center away from the bottom mold for demolding after casting.

[0008] The outer mold assembly is arranged outside the bottom mold and includes a plurality of vertically arranged outer templates. The bottoms of the outer templates are all arranged on the ground foundation through slide rails. When the plurality of outer templates slide inward along the slide rails, a circumferentially closed structure can be formed, which cooperates with the bottom mold to form a part of the outer wall of the casting chamber. When the plurality of outer templates slide outward along the slide rails, they can move away from the corresponding inner templates for demolding after casting and form an operation space between the inner templates and the outer templates.

[0009] Further, the plurality of inner templates include two bow-shaped templates and two strip-shaped templates. The two bow-shaped templates are arranged oppositely, and both horizontal ends of the bow-shaped templates are provided with bending parts extending towards the opposite bow-shaped template. The horizontal ends of the strip-shaped templates are respectively matched with the end faces of the bending parts on the same side of the two bow-shaped templates. The two bow-shaped templates and the two strip-shaped templates together form a circumferentially closed structure.

[0010] Furthermore, the slide rails at the bottoms of the two arcuate templates are arranged parallel to each other, the slide rails at the bottoms of the two strip templates are arranged parallel to each other, and the slide rails of the arcuate template and the strip template are arranged perpendicular to each other.

[0011] Furthermore, there are four outer templates, and the four outer templates respectively correspond to the two arcuate templates and the two strip templates one by one, and the slide rails at the bottoms of the outer templates are arranged parallel to the slide rails of the corresponding inner templates.

[0012] Furthermore, a circumferential step structure for cooperating with the inner template and the outer template is provided on the bottom die.

[0013] Furthermore, both the inner template and the outer template are pushed by hydraulic cylinders to slide along the slide rails.

[0014] Furthermore, a locking mechanism is provided between the inner template and the outer template for locking the relative positions between the inner template and the outer template during the pouring process after mold closing.

[0015] Furthermore, a handhole rod fixing plate is provided between the inner template and the outer template, and the handhole rod is detachably fixed on the handhole rod fixing plate for generating handholes on the culvert during pouring.

[0016] Furthermore, a detachable embedded pipe is provided on the outer template for generating reserved holes on the culvert during pouring.

[0017] Furthermore, a standing platform is provided on the outer side of the upper end of the outer template for facilitating workers to stand for operation.

[0018] After adopting the above technical solutions, the present invention has the following beneficial effects:

[0019] 1. The present invention adopts an inner template and an outer template slidably arranged on the ground foundation. By sliding the inner template and the outer template, mold closing and demolding can be completed, and the operation is convenient and fast;

[0020] 2. In the present invention, a hydraulic cylinder is adopted to provide the power for the inner template and the outer template to slide along the slide rails, which is convenient for realizing automatic control;

[0021] 3. In the present invention, a step structure for cooperating with the inner template and the outer template is provided on the bottom die, which can not only accurately position the mold closing positions of the inner template and the outer template, ensure the consistency of pouring, but also play a good sealing role to prevent the loss of slurry during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present invention in the mold closed state.

[0023] Figure 2 is Figure 1 the sectional structural schematic diagram at A-A in

[0024] Figure 3 is Figure 2 The enlarged structural schematic diagram at position B in

[0025] Figure 4 is the overall structural schematic diagram of the demolding state of the present invention.

[0026] Figure 5 is Figure 4 The sectional structural schematic diagram at C-C in

[0027] Description of the drawings: 1. Bottom mold, 11. Ground foundation, 12. Pouring bin, 13. Step structure, 2. Inner mold, 21. Arch-shaped mold, 211. Bending part, 22. Strip-shaped mold, 3. Outer mold, 31. First outer mold, 32. Second outer mold, 4. Slide rail, 5. Locking mechanism, 6. Manhole rod fixing plate, 61. Manhole rod, 7. Box culvert. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the features and performances of a vertical precast box culvert mold in the present invention will be further described in detail below with reference to the drawings and embodiments.

[0029] Please refer to the attached Figures 1 to 5 , a vertical precast box culvert mold, comprising a bottom mold 1, an inner mold assembly and an outer mold assembly. The bottom mold 1 is horizontally arranged on the ground foundation 11 and is used to cooperate with the inner mold assembly and the outer mold assembly from the bottom to form a pouring bin 12.

[0030] The inner mold assembly is arranged inside the bottom mold 1 and comprises a plurality of vertically arranged inner molds 2. The outer mold assembly is arranged outside the bottom mold 1 and comprises a plurality of vertically arranged outer molds 3. The bottoms of the inner molds 2 and the outer molds 3 are both arranged on the ground foundation 11 through slide rails 4.

[0031] As Figure 1 shown, when a plurality of inner molds 2 slide outward along the slide rail 4, a circumferentially closed structure can be formed, which cooperates with the bottom mold 1 to constitute a part of the inner wall of the pouring bin 12. When a plurality of outer molds 3 slide inward along the slide rail 4, a circumferentially closed structure can be formed, which cooperates with the bottom mold 1 to constitute a part of the outer wall of the pouring bin 12.

[0032] As Figure 4 shown, when a plurality of inner molds 2 slide inward along the slide rail 4, the inner molds 2 can be gathered towards the center and away from the bottom mold 1 for demolding after pouring. When a plurality of outer molds 3 slide outward along the slide rail 4, they can move away from the corresponding inner molds 2 for demolding after pouring and form an operation space between the inner molds 2 and the outer molds 3.

[0033] During specific setting, multiple inner templates 2 include two bow-shaped templates 21 and two strip-shaped templates 22. The two bow-shaped templates 21 are arranged oppositely. At both horizontal ends of the bow-shaped template 21, there are bending parts 211 extending towards the opposite bow-shaped template 21. The horizontal ends of the strip-shaped template 22 are respectively fitted with the end faces of the bending parts 211 on the same side of the two bow-shaped templates 21. The two bow-shaped templates 21 and the two strip-shaped templates 22 together form a circumferentially closed structure.

[0034] The slide rails 4 at the bottoms of the two bow-shaped templates 21 are arranged parallel to each other. The slide rails 4 at the bottoms of the two strip-shaped templates 22 are arranged parallel to each other, and the slide rails 4 of the bow-shaped template 21 and the strip-shaped template 22 are arranged perpendicular to each other.

[0035] By setting the bending part 211 on the bow-shaped template 21 and cooperating with the strip-shaped template 22 through the bending part 211, when the bow-shaped template 21 and the strip-shaped template 22 slide inward, they can be arranged in an interleaved manner, as Figure 4 shown.

[0036] There are four outer templates 3. The four outer templates 3 respectively correspond to the two bow-shaped templates 21 and the two strip-shaped templates 22 one by one. And the slide rails 4 at the bottoms of the outer templates 3 are arranged parallel to the slide rails 4 of the corresponding inner templates 2.

[0037] The four outer templates 3 include two first outer templates 31 and two second outer templates 32. The two first outer templates 31 are respectively arranged opposite to the bow-shaped templates 21, and the two second outer templates 32 are respectively arranged opposite to the two strip-shaped templates 22.

[0038] As Figure 2 and 3 shown, on the bottom die 1, there is a circumferential step structure 13 for cooperating with the inner template 2 and the outer template 3. When the inner template 2 and the outer template 3 cooperate with the bottom die 1, the inner template 2 and the outer template 3 can be embedded in the step structure 13 to achieve the positioning function and the sealing function.

[0039] Both the inner template 2 and the outer template 3 are pushed by hydraulic cylinders to slide along the slide rails 4. Using hydraulic cylinders as the driving force can ensure sufficient thrust and maintain the thrust during the mold closing and pouring process.

[0040] Between the inner template 2 and the outer template 3, there are a locking mechanism 5 and a handhole rod fixing plate 6. The locking mechanism 5 is used to lock the relative positions between the inner template 2 and the outer template 3 during the pouring process after mold closing. On the handhole rod fixing plate 6, a handhole rod 61 is detachably fixed, which is used to generate a handhole on the box culvert during pouring. On the outer template 3, there is a detachable embedded pipe, which is used to generate a reserved hole on the box culvert during pouring.

[0041] On the outer side of the upper end of the outer formwork 3, there is also a standing platform where workers can stand to operate the locking mechanism 5 and the handhole rod fixing plate 6, and vibrate the poured concrete.

[0042] During specific implementation, first switch the mold to the open state. Operate the hydraulic cylinder to control the two first outer formworks 31 to slide away from each other along the slide rails 4 at the bottom of their own, and after the first outer formworks 31 move in place, control the two second outer formworks 32 to slide away from each other along the slide rails 4 at the bottom of their own, and the outer mold assembly completes the opening operation.

[0043] Operate the hydraulic cylinder to control the two strip formworks 22 to slide towards the center along the slide rails 4 at the bottom of their own, and after the strip formworks 22 move in place, control the two arched formworks 21 to slide towards the center along the slide rails 4 at the bottom of their own, and the inner mold assembly completes the opening operation.

[0044] After opening, use a grinding tool to grind the inner surface of the mold to make the inner surface of the mold free of residues. After cleaning, evenly spray a release agent on the inner surface of the mold.

[0045] Lift the fabricated steel reinforcement cage and hoist it between the inner formwork 2 and the outer formwork 3, place it on the bottom formwork 1, and adjust the position of the steel reinforcement cage.

[0046] Then perform the mold closing operation. First close the inner mold. Operate the hydraulic cylinder to control the two arched formworks 21 to slide away from each other along the slide rails 4 at the bottom of their own until the bottom of the arched formwork 21 mates with the step structure 13 on the bottom formwork 1. The hydraulic cylinder stops pushing and holds. After the arched formwork 21 moves in place, control the two strip formworks 22 to slide away from each other along the slide rails 4 at the bottom of their own until the bottom of the strip formwork 21 mates with the step structure 13 on the bottom formwork 1, and the horizontal ends of the strip formwork 21 mate with the end faces of the bent parts 211 on the arched formwork 22. The hydraulic cylinder stops pushing and holds, and the inner mold assembly completes the mold closing.

[0047] Then close the outer mold. Operate the hydraulic cylinder to control the two second outer formworks 32 to slide towards the center along the slide rails 4 at the bottom of their own until the bottom of the second outer formwork 32 mates with the step structure 13 on the bottom formwork 1. The hydraulic cylinder stops pushing and holds. After the second outer formwork 32 moves in place, control the two first outer formworks 31 to slide towards the center along the slide rails 4 at the bottom of their own until the bottom of the first outer formwork 31 mates with the step structure 13 on the bottom formwork 1, and the horizontal ends of the first outer formwork 31 mate with the horizontal end faces of the second outer formwork 32. The hydraulic cylinder stops pushing and holds, and the outer mold assembly completes the mold closing.

[0048] Such as Figure 1 and 2As shown, after the inner and outer molds are closed, the inner template 2, the outer template 3, and the bottom mold 1 together form the pouring bin 12.

[0049] After the mold closing is completed, lock all the locking mechanisms 5 between the inner template 2 and the outer template 3. Install the handhole rod fixing plate 6, and install the handhole rod 61 on the handhole rod fixing plate 6. Set the embedded pipe on the outer template 3.

[0050] Carry out concrete pouring, pour concrete into the pouring bin 12 and vibrate it. When the concrete starts to set initially after 2 hours, remove the embedded pipe and the handhole rod 61. After 8 hours of sealed steam curing, wait for the poured body to drop to normal temperature and then the demolding operation can be carried out.

[0051] Before demolding, unlock all the locking mechanisms 5 between the inner template 2 and the outer template 3, and remove the handhole rod fixing plate 6.

[0052] When demolding, first remove the outer mold. Operate the hydraulic cylinder to control the two first outer templates 31 to slide outward along the slide rails 4 at their own bottoms and move away from each other. After the first outer templates 31 move in place, control the two second outer templates 32 to slide outward along the slide rails 4 at their own bottoms and move away from each other, and the outer mold assembly completes the demolding operation.

[0053] Then remove the inner mold. Operate the hydraulic cylinder to control the two strip templates 22 to slide towards the center along the slide rails 4 at their own bottoms and move closer to each other. After the strip templates 22 move in place, control the two arc templates 21 to slide towards the center along the slide rails 4 at their own bottoms and move closer to each other, and the inner mold assembly completes the demolding operation.

[0054] As Figure 4 and 5 shown, after the demolding operation is completed, the concrete box culvert 7 is completely separated from the inner mold 2 and the outer mold 3 and is located on the bottom mold 1. Use the hoisting equipment to lift the box culvert 7 to the storage area for further curing until it reaches the design strength.

[0055] When continuously pouring, after the demolding operation is completed, directly enter the step of grinding the inner surface of the mold.

[0056] It should be noted that the parts not described in detail in this solution are all prior arts. The above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A vertical prefabricated box culvert mold, comprising a bottom mold (1), an inner mold assembly and an outer mold assembly, characterized in that: The bottom mold (1) is horizontally arranged on a ground foundation (11) and is used to cooperate with the inner mold assembly and the outer mold assembly from the bottom to form a casting bin (12). The inner mold assembly is arranged inside the bottom mold (1), and comprises a plurality of vertically arranged inner mold plates (2). The bottoms of the inner mold plates (2) are all arranged on a ground foundation (11) via a slide rail (4). The plurality of inner mold plates (2) can slide outward along the slide rail (4) to form a circumferentially closed structure, and cooperate with the bottom mold (1) to form an inner wall portion of a casting bin (12). The plurality of inner mold plates (2) can slide inward along the slide rail (4) to gather the inner mold plates (2) toward the center and away from the bottom mold (1), so as to be demoulded after casting is completed. The outer mold assembly is arranged outside the bottom mold (1), and includes a plurality of vertically arranged outer mold plates (3). The bottoms of the outer mold plates (3) are all arranged on a ground foundation (11) via a slide rail (4). The plurality of outer mold plates (3) can slide inward along the slide rail (4) to form a circumferentially closed structure, and cooperate with the bottom mold (1) to form an outer wall portion of a casting bin (12). The plurality of outer mold plates (3) can slide outward along the slide rail (4) to move away from the corresponding inner mold plates (2), so as to be demoulded after casting is completed, and to form an operating space between the inner mold plate (2) and the outer mold plate (3).

2. A vertical prefabricated box culvert mold according to claim 1, characterized in that: The plurality of inner templates (2) include two arch templates (21) and two strip templates (22). The two arch templates (21) are arranged opposite to each other. Both horizontal ends of the arch templates (21) are provided with bending portions (211) extending in the direction of the opposite arch templates (21). Both horizontal ends of the strip templates (22) are respectively matched with end faces of the bending portions (211) on the same side of the two arch templates (21). The two arch templates (21) and the two strip templates (22) together form a circumferential closed structure.

3. A vertical prefabricated box culvert mold according to claim 2, characterized in that: The slide rails (4) at the bottom of the two arch templates (21) are arranged parallel to each other, the slide rails (4) at the bottom of the two strip templates (22) are arranged parallel to each other, and the slide rails (4) of the arch template (21) and the strip template (22) are arranged perpendicular to each other.

4. A vertical prefabricated box culvert mold according to claim 1, characterized in that: Four outer templates (3) are provided, and the four outer templates (3) correspond to the two arch templates (21) and the two strip templates (22) respectively, and the slide rails (4) at the bottom of the outer templates (3) and the slide rails (4) of the corresponding inner templates (2) are arranged parallel to each other.

5. The vertical prefabricated box culvert mold according to claim 1, characterized in that: The bottom mold (1) is provided with a circumferential step structure (13) for cooperating with the inner mold plate (2) and the outer mold plate (3).

6. A vertical prefabricated box culvert mold according to claim 1, characterized in that: The inner template (2) and the outer template (3) are both pushed by hydraulic cylinders to slide along the slide rail (4).

7. The vertical prefabricated box culvert mold according to claim 1, characterized in that: A locking mechanism (5) is provided between the inner template (2) and the outer template (3) for locking the relative position between the inner template (2) and the outer template (3) during the casting process after the molds are closed.

8. The vertical prefabricated box culvert mold according to claim 1, characterized in that: A hand hole rod fixing plate (6) is provided between the inner formwork (2) and the outer formwork (3), and the hand hole rod (61) is detachably fixed on the hand hole rod fixing plate (6) and is used to form a hand hole on the box culvert during pouring.

9. The vertical prefabricated box culvert mold according to claim 1, characterized in that: The outer formwork (3) is provided with a detachable embedded pipe, which is used to generate a reserved hole on the box culvert during pouring.

10. The vertical prefabricated box culvert mold according to claim 1, characterized in that: A standing platform is provided on the outer side of the upper end of the outer template (3) to facilitate workers to stand and operate.

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