Batch box culvert pouring mold

Abstract

The batch box culvert pouring mold comprises an outer mold unit and an inner mold unit, the outer mold unit comprises a base, a bottom plate, two sets of side plates, a top plate and a rear plate, the rear plate and the bottom plate are integrally formed, the side plates are connected with the top plate and the bottom plate through telescopic rods, and the surfaces of the side plates are provided with third protrusions and U-shaped plates with fourth protrusions; the inner mold unit comprises an inner forming mold, a moving rod and a linkage plate, the linkage plate is provided with a first protrusion and a second protrusion, and a sleeving frame with a convex attaching strip is detachably fixed in an annular groove of the inner forming mold through a screw. After concrete is poured and solidified through the top plate injection groove, the moving rod drives the internal forming mold to drive the linkage plate to act, approaching positioning and separation of the side plates are achieved through linkage of the protrusions, the box culvert is moved out along with the inner mold by means of friction force of the attaching strips, and the box culvert and the inner mold can be separated by disassembling the screw. The demolding process is simplified, automatic operation is achieved, the labor intensity is reduced, the continuity, stability and forming quality of batch production are guaranteed, and the mold is suitable for a box culvert batch production scene.

Description

Technical Field

[0001] This invention relates to the field of box culvert casting technology, specifically to a batch box culvert casting mold. Background Technology

[0002] In the prior art, patent CN215790618U, entitled "A Demountable Box Culvert Mold," describes a box culvert mold comprising a bottom mold, an outer mold, and an inner mold. The bottoms of the outer and inner molds are detachably fixed to the bottom mold. A forming space is provided between the outer and inner molds, with an open top. The tops of the outer and inner molds are located on the same horizontal plane, and a fixing connection device is provided at the tops of the outer and inner molds. This design features a reasonable structure, a simple concrete pouring process, modular mold design, reusability, and easy installation and disassembly, significantly reducing the labor intensity of workers.

[0003] However, the existing box culvert molds are generally inefficient in the assembly process before casting the box culvert and in the disassembly process after the box culvert has solidified. They often require a lot of manual labor for step-by-step alignment, fastening or disassembly operations, and lack an automated linkage mechanism, making it impossible to quickly and completely remove the solidified box culvert. Summary of the Invention

[0004] The purpose of this invention is to provide a batch casting mold for box culverts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a batch casting mold for box culverts, comprising an outer mold unit and an inner mold unit; the outer mold unit includes a base, a bottom plate, two sets of oppositely arranged side plates, a top plate, and a rear plate; the bottom plate is located above the base, the rear plate is integral with the bottom plate and located on the surface of the base, the top plate is located above the bottom plate, the two sets of side plates are vertically arranged on the base and respectively located on both sides of the top plate and the bottom plate, the upper and lower ends of each side plate are connected to the top plate and the bottom plate through a telescopic connecting structure, and the surface of the top plate is provided with a slurry groove; the side plates are provided with protrusions for linkage; the inner mold unit includes an internal forming mold, the internal forming mold is provided with a drive connecting structure and a linkage plate, the surface of the linkage plate is provided with two sets of mating protrusions adapted to the protrusions, the two sets of mating protrusions respectively realize positioning and demolding traction functions; the internal forming mold is sealed to the outer mold unit, and the internal forming mold is located within the forming space formed by the top plate, the bottom plate, the rear plate, and the two sets of side plates.

[0006] Preferably, the telescopic connection structure consists of multiple sets of telescopic rods, which are fixed to the upper and lower ends of each side plate. The end of the telescopic rod at the top of the side plate away from the side plate is inserted into the interior of the top plate, and the end of the telescopic rod at the bottom of the side plate away from the side plate is inserted into the interior of the bottom plate. The telescopic rods can extend and retract within the top and bottom plates along the insertion direction, providing guidance for the movement of the side plates.

[0007] Preferably, the side plate has a horizontal groove on its surface, and the protrusion structure consists of two sets of third protrusions symmetrically fixed to the surface of the horizontal groove; the linkage plate is an L-shaped plate, and one set of mating protrusions is a first protrusion located on the surface of the linkage plate and facing inward. The first protrusion and the third protrusion are adapted to each other to achieve the close positioning of the side plate.

[0008] Preferably, a C-shaped plate is fixed to the surface of the side plate, the C-shaped plate is located between two sets of third protrusions, and a fourth protrusion facing the side plate is fixed to the surface of the C-shaped plate; another set of matching protrusions on the surface of the L-shaped plate is a second protrusion facing outward, the second protrusion and the fourth protrusion are adapted and linked to provide outward pulling force to the side plate during demolding, so as to realize the separation of the side plate from the box culvert.

[0009] Preferably, the drive connection structure is a moving rod, one end of which is fixedly connected to the internal molding die, and the other end is connected to a drive device. The drive device is used to drive the moving rod to move the internal molding die and the linkage plate synchronously, thereby driving the two sets of cooperating protrusions to achieve positioning and demolding traction actions respectively.

[0010] Preferably, the rear plate surface is provided with a slot, and when the internal forming mold moves into the forming space with the moving rod, its end is inserted into the slot to achieve positioning.

[0011] Preferably, the front end of the internal molding die is provided with a sealing plate, and the sealing plate is supported on the front wall surface of the top plate, bottom plate and side plate to achieve sealing of the molding space.

[0012] Preferably, an annular groove is provided at the rear of the internal forming mold, and a sleeve frame is adapted to fit in the annular groove. The surface of the sleeve frame is provided with several convex fitting strips to increase the friction between the sleeve frame and the box culvert, so that the box culvert can be released from the outer mold synchronously with the internal forming mold. The sleeve frame and the internal forming mold are fixedly connected by a detachable fixing structure.

[0013] Preferably, the detachable fixing structure includes a screw hole and a screw rod, the rear surface of the internal molding mold and the sleeve frame are provided with corresponding screw holes, and the screw rod passes through the screw hole to fix the sleeve frame and the internal molding mold.

[0014] Preferably, the linkage plate consists of two sets, which are respectively fixed to the surfaces of the moving rods on both sides of the internal forming mold to ensure that the side plates are subjected to uniform force; the surfaces of the side plates and the rear plate are sprayed with a release agent to reduce the adhesion between the components and the concrete.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves automated side plate separation through an integrated transmission structure of moving rod, linkage plate, and protrusion, eliminating the need for manual intervention in side plate assembly and disassembly; the design of the box culvert moving out synchronously with the inner mold and separating from the screw simplifies the demolding process, significantly shortens the demolding cycle of a single box culvert, and significantly improves the continuity and operational efficiency of mass production. The side plate of this invention is guided by a telescopic rod and linked with the protrusion to move closer or further away, without redundant disassembly and assembly structure, reducing assembly errors; the rear plate and the bottom plate adopt an integrated structural design, which does not require disassembly throughout the process, avoiding the positioning reference offset caused by repeated disassembly and assembly, ensuring the uniformity of the forming dimensions of box culverts in multiple batches, and improving the quality stability of mass production.

[0016] The present invention achieves positioning through the supporting action of the first and third protrusions, providing a stable forming space for concrete pouring; the linkage transmission of the second and fourth protrusions can reliably drive the side plate to separate without manual adjustment; the cooperation between the sleeve frame and the convex fitting strip ensures that the box culvert moves out smoothly with the inner mold, realizing the automation and reliability upgrade of the demolding action and reducing the intensity of manual operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal molding die structure of the present invention; Figure 3 This is a schematic diagram of the side plate structure of the present invention; Figure 4 This is a schematic diagram of the card slot structure of the present invention; Figure 5 This is a schematic diagram of the base plate structure of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Base; 2. Internal forming mold; 3. Moving rod; 4. Sealing plate; 5. Screw hole; 6. Sleeve frame; 7. Annular groove; 8. First protrusion; 9. Second protrusion; 10. Linkage plate; 11. Top plate; 12. Horizontal groove; 13. Side plate; 14. C-shaped plate; 15. Third protrusion; 16. Rear plate; 17. Bottom plate; 18. Slot; 19. Telescopic rod; 20. Fourth protrusion. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 6 This embodiment discloses a batch casting mold for box culverts, comprising an outer mold unit and an inner mold unit. The outer mold unit includes a base 1, a bottom plate 17, two sets of opposing side plates 13, a top plate 11, and a rear plate 16. The bottom plate 17 is located above the base 1. The rear plate 16 is integral with the bottom plate 17 and is located on the surface of the base 1. The top plate 11 is located above the bottom plate 17. The two sets of side plates 13 are vertically mounted on the base 1 and respectively located on both sides of the top plate 11 and the bottom plate 17. The upper and lower ends of each side plate 13 are... The side plate 13 is connected to the top plate 11 and the bottom plate 17 via a telescopic connection structure. The telescopic connection structure consists of multiple sets of telescopic rods 19, which are fixed to the upper and lower ends of each side plate 13. The end of the telescopic rod 19 at the top of the side plate 13 away from the side plate 13 is inserted into the interior of the top plate 11, and the end of the telescopic rod 19 at the bottom of the side plate 13 away from the side plate 13 is inserted into the interior of the bottom plate 17. The telescopic rods 19 can only move in and out of the top plate 11 and the bottom plate 17 along the insertion direction, providing stable guidance for the movement of the side plate 13.

[0021] A transverse groove 12 is formed on the surface of the side plate 13. Two sets of third protrusions 15 are symmetrically fixed on the surface of the transverse groove 12. These third protrusions 15 serve as positioning protrusions for the outer formwork unit. A U-shaped plate 14 is also fixed on the surface of the side plate 13. The U-shaped plate 14 is located between the two sets of third protrusions 15, and a fourth protrusion 20 is fixed on the surface of the U-shaped plate 14 facing the side plate 13. This fourth protrusion 20 serves as a demolding traction adaptation structure for the outer formwork unit. A slurry groove is formed on the surface of the top plate 11 for injecting concrete. The surfaces of the side plate 13 and the rear plate 16 are sprayed with a release agent to reduce component adhesion during the pouring and demolding process, so as to facilitate smooth separation of the outer formwork unit from the box culvert.

[0022] The inner mold unit includes an inner forming mold 2, which is equipped with a drive connection structure and a linkage plate 10. The drive connection structure is a moving rod 3, one end of which is fixedly connected to the inner forming mold 2, and the other end is connected to a drive device. The drive device is used to drive the moving rod 3 to move the inner forming mold 2 and the linkage plate 10 synchronously. There are two sets of linkage plates 10, which are fixed to the surfaces of the moving rods 3 on both sides of the inner forming mold 2 to ensure that the side plates 13 on both sides are subjected to uniform force. The linkage plate 10 is an L-shaped plate with two sets of mating protrusions on its surface, which correspond to the positioning and demolding traction structures of the outer mold unit, respectively.

[0023] The first protrusion 8, facing inward, is adapted to and engages with the third protrusion 15 of the side plate 13. When the linkage plate 10 moves with the internal forming mold 2, the first protrusion 8 on its surface can contact and hold the third protrusion 15, achieving the close positioning of the side plate 13. The second protrusion 9, facing outward, is adapted to and engages with the fourth protrusion 20 of the wedge-shaped plate 14. After the linkage plate 10 moves, it drives the second protrusion 9 to hold the fourth protrusion 20. After the fourth protrusion 20 is subjected to force, it drives the wedge-shaped plate 14 to move, providing sufficient outward pulling force for the side plate 13, so that the two sets of side plates 13 move away from each other and detach from the surface of the box culvert. In addition, a slot 18 is provided on the surface of the rear plate 16. When the internal forming mold 2 moves into the forming space with the moving rod 3, its end is inserted into the slot 18 to complete the positioning.

[0024] The internal forming mold 2 and the outer mold unit are sealed together by a sealing fit structure, which is a sealing plate 4. The sealing plate 4 is located at the front end of the internal forming mold 2 and supports the front wall surface of the top plate 11, bottom plate 17 and side plate 13 to achieve sealing of the forming space and prevent concrete leakage. The internal forming mold 2 is located in the forming space formed by the top plate 11, bottom plate 17, rear plate 16 and two sets of side plates 13.

[0025] An annular groove 7 is provided at the rear of the internal forming mold 2. A fitting frame 6 is adapted to fit within the annular groove 7. The surface of the fitting frame 6 is provided with several convex fitting strips to increase the friction between the fitting frame 6 and the box culvert, allowing the box culvert to detach from the outer mold unit synchronously with the internal forming mold 2. The fitting frame 6 and the internal forming mold 2 are fixedly connected by a detachable fixing structure. The detachable fixing structure includes screw holes 5 and screws. The rear surface of the internal forming mold 2 and the fitting frame 6 are provided with corresponding screw holes 5. The screw passes through the screw holes 5 to fix the fitting frame 6 and the internal forming mold 2, ensuring the stability of their synchronous movement.

[0026] The overall working principle of this scheme is as follows: During the initial assembly, the outer mold unit is assembled and formed by the telescopic rod 19, and the inner mold unit is moved to the outer mold enclosure space by the moving rod 3. The end insertion slot 18 is positioned, and the sealing plate 4 and the rear plate 16 cooperate to form a closed space. The sleeve frame 6 is fixed in the annular groove 7 of the internal forming mold 2 by the screw for later use. At this time, the first protrusion 8 of the linkage plate 10 cooperates with the third protrusion 15 of the side plate 13 to support each other, so that the side plates 13 are close to each other and maintain stable positioning. The second protrusion 9 and the fourth protrusion 20 are in the pre-linkage state.

[0027] During the pouring stage, concrete is injected through the injection groove of the top plate 11. The concrete fills the forming space, and the convex bonding strip of the sleeve frame 6 is tightly bonded to the concrete, forming a stable connection with the help of friction. The release agent of the side plate and the rear plate reduces adhesion.

[0028] The demolding process is carried out in two stages. The first stage involves the separation of the outer mold from the inner forming mold – the culvert attachment. After the concrete solidifies, the drive unit moves the moving rod 3 outwards, pulling the inner forming mold 2. The linkage plate 10 moves synchronously with the moving rod 3, and the first protrusion 8 and the third protrusion 15 disengage from their supporting structures. Because the telescopic rod 19 lacks elastic reset function, the side plate 13 has no active movement force. At this time, the second protrusion 9 and the fourth protrusion 20 adhere to each other and apply sufficient outward pulling force, causing the U-shaped plate 14 and the side plate 13 to move outwards along the guide of the telescopic rod 19. The two sets of side plates 13 move away from each other and detach from the culvert surface. The inner forming mold, through the friction of the sleeve frame 6, causes the culvert to move synchronously out of the base 1. The second stage involves the separation of the inner forming mold from the culvert. The bolts passing through the screw holes 5 and the sleeve frame 6 are disassembled, releasing the fixing relationship between the sleeve frame 6 and the inner forming mold 2, so that the culvert can be removed from the surface of the inner forming mold. The entire operation does not require frequent disassembly of the side and rear plates, enabling efficient completion of the culvert's pouring and removal.

[0029] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A batched box culvert casting mold, characterized in that: The utility model provides a box culvert forming device, which comprises an outer mold unit and an inner mold unit; the outer mold unit comprises a base (1), a bottom plate (17), two groups of oppositely arranged side plates (13), a top plate (11) and a back plate (16); the bottom plate (17) is arranged above the base (1); the back plate (16) and the bottom plate (17) are in an integral structure and are arranged on the surface of the base (1); the top plate (11) is arranged above the bottom plate (17); the two groups of side plates (13) are vertically arranged on the base (1) and are arranged on the two sides of the top plate (11) and the bottom plate (17); the upper and lower ends of each side plate (13) are connected to the top plate (11) and the bottom plate (17) through telescopic connecting structures; and a pouring groove is formed in the surface of the top plate (11); the side plate (13) is provided with a protruding structure for linkage cooperation; the inner mold unit comprises an inner forming mold (2) and a linkage plate (10); the linkage plate (10) is provided with two groups of matching protrusions which are adapted to the protruding structure; the two groups of matching protrusions realize positioning and demolding traction functions respectively; the inner forming mold (2) is sealingly connected to the outer mold unit; and the inner forming mold (2) is arranged in a forming space formed by the top plate (11), the bottom plate (17), the back plate (16) and the two groups of side plates (13).

2. The batched box culvert formwork of claim 1, wherein: The telescopic connecting structure comprises a plurality of telescopic rods (19); the telescopic rods (19) are fixed to the upper and lower ends of each side plate (13); the telescopic rod (19) at the top of the side plate (13) is inserted into the inner portion of the top plate (11) away from the side plate (13); and the telescopic rod (19) at the bottom of the side plate (13) is inserted into the inner portion of the bottom plate (17) away from the side plate (13).

3. The batched box culvert formwork of claim 2, wherein: The surface of the side plate (13) is provided with a horizontal groove (12); the protruding structure comprises two groups of third protrusions (15) which are symmetrically fixed to the surface of the horizontal groove (12); the linkage plate (10) is an L-shaped plate; one group of matching protrusions is first protrusions (8) which are arranged on the surface of the L-shaped plate and face inward; the first protrusions (8) are adapted to the third protrusions (15) to realize the close positioning of the side plate (13).

4. The batched box culvert form of claim 3, wherein: The surface of the side plate (13) is fixed with a Z-shaped plate (14); the Z-shaped plate (14) is arranged between the two groups of third protrusions (15); the surface of the Z-shaped plate (14) is fixed with fourth protrusions (20) which face the side plate (13); the other group of matching protrusions on the surface of the linkage plate (10) is second protrusions (9) which face outward; the second protrusions (9) are adapted to the fourth protrusions (20) to provide an outward pulling force for the side plate (13) during demolding, so that the side plate (13) is separated from the box culvert.

5. The batched box culvert form of claim 1, wherein: The driving connecting structure comprises a moving rod (3); one end of the moving rod (3) is fixedly connected to the inner forming mold (2); the other end of the moving rod (3) is connected to a driving device; the driving device is used for driving the moving rod (3) to drive the inner forming mold (2) and the linkage plate (10) to move synchronously, so that the two groups of matching protrusions realize positioning and demolding traction actions respectively.

6. The batched box culvert form of claim 5, wherein: The rear plate (16) is provided with a clamping groove (18) on the surface, and the end of the inner forming die (2) is inserted into the clamping groove (18) to realize positioning when the inner forming die (2) moves into the forming space with the moving rod (3).

7. The batched box culvert form of claim 1, wherein: The front end of the inner forming die (2) is provided with a sealing plate (4), and the sealing plate (4) is supported on the front wall surface of the top plate (11), the bottom plate (17) and the side plate (13).

8. The batched box culvert form of claim 1, wherein: The rear of the inner forming die (2) is provided with an annular groove (7), and the annular groove (7) is fitted with a sleeving frame (6). The surface of the sleeving frame (6) is provided with a plurality of convex fitting strips, which are used to increase the friction between the sleeving frame (6) and the box culvert, so that the box culvert can be synchronized with the inner forming die (2) to separate from the outer mold. The sleeving frame (6) and the inner forming die (2) are fixedly connected through a detachable fixing structure.

9. The batched box culvert form of claim 8, wherein: The detachable fixing structure includes a screw hole (5) and a screw rod. The rear surface of the inner forming die (2) and the sleeving frame (6) are provided with corresponding screw holes (5), and the screw rod is inserted into the screw hole (5) to fix the sleeving frame (6) and the inner forming die (2).

10. The batched box culvert form of claim 5, wherein: The linkage plate (10) is two groups, which are respectively fixed on the surface of the moving rod (3) on both sides of the inner forming die (2); the surface of the side plate (13) and the rear plate (16) is sprayed with a release agent.

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