Hydraulic core mold device of concrete hollow slab beam

Abstract

The hydraulic core mold device of the concrete hollow slab beam comprises a bottom plate, side plates, end molds and a mold core, the two end molds are erected on the bottom plate in a spaced mode and connected through the side plates, a forming cavity is defined by the end molds, the side plates and the bottom plate, the mold core is erected in the middle of the forming cavity, the mold core comprises two crescent-shaped mold plates arranged oppositely, and the crescent-shaped mold plates are arranged oppositely. The crescent formwork comprises an L-shaped connecting plate and two wing plates arranged up and down, the connecting plate is welded to the wing plates, and every two adjacent wing plates are connected through a hinge on the connecting plate. The whole structure is simple, the hydraulic cylinder is located on the end mold, operation procedures are simplified, and overhauling and maintaining are convenient; the middle supporting plate, the hinge seat and the wing plate of the crescent mold plate are integrally connected through the full-length linkage rod, on one hand, the number of the hydraulic cylinders can be greatly reduced, the mold core is expanded to form a cavity shape or retracted to form a folded shape, forming or demolding of the mold core is facilitated, and on the other hand, the stroke of the piston rod can be shortened by directly pushing the full-length linkage rod through the hydraulic cylinders.

Description

Technical Field

[0001] The utility model relates to the technical field of core molds for buildings, and more specifically to a hydraulic core mold device for a concrete hollow slab beam. Background Art

[0002] During the pouring process of concrete hollow slab beams, it is necessary to place a mold to create a hollow structure. In the past, the airbag core mold was mainly used, which was easy to operate and disassemble, but it had many problems:

[0003] (1) Inaccurate positioning: The airbag core mold itself has a low density. During the pouring process, it will tend to move upward under the buoyancy of concrete, and inevitably deviate from the original position, causing the thickness of the top and bottom plates of the hollow slab beam to deviate from the design value;

[0004] (2) Irregular shape: On the one hand, the airbag core mold itself has low rigidity, and its shape will change under the action of concrete pressure and buoyancy. At the same time, due to the presence of the positioning shaft, the deformation of the core mold is locally constrained, and finally a segmented inner cavity similar to the shape of a "sausage" is formed. On the other hand, the airbag core mold has poor adaptability to cross-sectional shapes other than circular, and it is difficult to form regular corners in the shape of a quadrilateral or octagonal hollow section.

[0005] (3) High safety risk: When the airbag core mold is inflated, if there is improper pressure accumulation or the airbag material does not meet the requirements, it may cause the airbag to explode or leak, and in serious cases may even cause a construction site safety accident.

[0006] Therefore, it is necessary to propose a hydraulic core mold device for concrete hollow slab beams, which is suitable for engineering projects that have high requirements on dimensional accuracy, flatness and appearance, and require high-quality, high-efficiency and high-safety construction. It is especially suitable for situations where the beam cavity is small, the environment is hot or the operators cannot enter the cavity to work. It can realize overall rapid formwork and demolding in the limited space of the beam body and in the environment of high temperature, which is of great significance to improving the operation safety and construction efficiency of hollow slab beams. Utility Model Content

[0007] The utility model provides a hydraulic core mold device for a concrete hollow slab beam, which solves the problems of deformation, deviation, floating, complex assembly and core pulling processes and slow speed of traditional core molds.

[0008] According to one aspect of the utility model, a hydraulic core mold device for a concrete hollow slab beam is provided, comprising a bottom plate, a side plate, an end mold and a mold core, two end molds are arranged on the bottom plate at intervals and connected by the side plates, the end molds, side plates and bottom plate are arranged to form a molding cavity, the mold core is arranged in the middle of the molding cavity, the mold core comprises two relatively crescent-shaped mold plates, and the crescent-shaped mold plate comprises an L-shaped connecting plate and two wing plates arranged up and down, the connecting plate is welded to the wing plate, and two adjacent wing plates are connected by hinges on the connecting plate; a longitudinal beam is arranged on the wing plate, an articulated seat is arranged at the end of the longitudinal beam, a support plate is connected to the articulated seat by bolts, a through-length connecting rod is arranged between adjacent support plates, the through-length connecting rod is hinged by an adjusting bolt with adjustable tightness, a hydraulic cylinder is arranged on the end mold, and the telescopic rod of the hydraulic cylinder is connected to the through-length connecting rod.

[0009] Preferably, based on the above solution, baffles are arranged around the wing plates and the connecting plates, and the cross section of the mold core is polygonal when it is expanded.

[0010] Preferably, based on the above solution, a retaining strip having a right-angled cross section is welded on the side of the wing plate facing away from the connecting plate.

[0011] Preferably, based on the above scheme, the straight edge of the bar of one of the crescent-shaped templates is arranged outward, and the oblique edge of the bar of the other crescent-shaped template is arranged outward, and when the two crescent-shaped templates are connected, the oblique edge of the bar is pressed on the straight edge of the bar.

[0012] Preferably, based on the above scheme, the longitudinal beam is a channel steel, the hinged seat includes a rotating shaft welded on the channel steel and an adapter ring rotatably mounted on the rotating shaft, a straight plate is connected to the outside of the adapter ring, and the straight plate is rotatably connected to the support plate by bolts.

[0013] The utility model discloses a hydraulic core mold device for a concrete hollow slab beam, which has a simple overall structure. The hydraulic cylinder is located on the end mold, which simplifies the operation procedure and is convenient for inspection and maintenance. The through-length connecting rod integrally connects the middle support plate, the hinge seat and the wing plate of the crescent-shaped template. On the one hand, the number of hydraulic cylinders can be greatly reduced, so that the mold core can be opened to form a cavity shape or retracted to form a folded shape, which is convenient for molding or demoulding. On the other hand, the hydraulic cylinder directly pushes the through-length connecting rod to shorten the stroke of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0015] Figure 1 It is a side view of the hydraulic core mold device of the concrete hollow slab beam of the utility model;

[0016] Figure 2 It is a side view of the mold core of the utility model;

[0017] Figure 3 It is a schematic diagram of the crescent-shaped template of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the end mold of the utility model;

[0019] Figure 5 It is a three-dimensional structural diagram of the end mold of the utility model;

[0020] Description of Figure Numbers:

[0021] Bottom plate 1, side plate 2, end mold 3, core mold 4, crescent-shaped template 41, connecting plate 42, wing plate 43, hinge 44, longitudinal beam 45, hinge seat 46, bolt 47, support plate 48, full-length connecting rod 49, adjusting bolt 50, hydraulic cylinder 51, baffle plate 52, baffle bar 53, rotating shaft 54, adapter ring 55, straight plate 56. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0024] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0025] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] In the embodiments shown in the drawings, the directions (such as up, down, left, right, front and back) used to explain the structure and movement of the various components of the present invention are not absolute but relative. These descriptions are appropriate when the components are in the positions shown in the drawings. If the description of the positions of the components changes, the directions also change accordingly.

[0027] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0029] See also Figure 1 , and combined with Figure 2 and Figure 3 As shown, a hydraulic core mold device for a concrete hollow slab beam of the utility model comprises a bottom plate 1, a side plate 2, an end mold 3 and a core mold 4, wherein the bottom plate 1 serves as a support, the end molds 3 are arranged at both ends of the bottom plate 1 and are connected through the side plates 2, the side plates 2, the end molds 3 and the bottom plate 1 form a molding cavity, and the core mold 4 is mounted in the middle of the molding cavity, so that the outer edge surface of the core mold 4 and the inner edge surface of the side plate 2 can form a cavity for pouring concrete.

[0030] For the specific structure, please refer to Figure 2 and Figure 3 As shown, the mold core 4 of the utility model includes two crescent-shaped templates 41 arranged opposite to each other, and the two crescent-shaped templates 41 are arranged opposite to each other to form a mold core 4 with a polygonal cross section. In order to facilitate the rapid demoulding of the mold core 4 and ensure that the mold core 4 does not deform during molding, the crescent-shaped template 41 of the utility model is designed to include an L-shaped connecting plate 42 and a wing plate 43, the wing plate 43 is a polygonal structure, the two wing plates 43 are stacked up and down, and the connecting plates 42 are welded on the adjacent sides of the two wing plates 43, the adjacent connecting plates 42 are connected by hinges 44, and baffles 52 are arranged on the outer edge surfaces of the wing plates 43 and the connecting plates 42, that is, the length of the connecting plate 42 can be set according to the length of the hollow slab beam to be cast, and there can be multiple wing plates 43, which are arranged at intervals in the length direction of the connecting plate 42 to form support.

[0031] A longitudinal beam 45 is provided on the wing plate 43 on the same crescent-shaped template 41. The longitudinal beam 45 can improve the strength of the crescent-shaped template 41. Of course, it can also serve as a connection point of the crescent-shaped template 41. A hinge seat 46 is installed on the longitudinal beam 45. A support plate 48 can be rotatably connected to the hinge seat 46 through a bolt 47. A full-length connecting rod 49 is provided between adjacent support plates 48. The full-length connecting rod 49 is hinged by an adjusting bolt 50 that can adjust the tightness. A hydraulic cylinder 51 is provided on the end mold 3. The telescopic rod of the hydraulic cylinder 51 is connected to the full-length connecting rod 49. For the specific structure, please refer to Figure 4 and Figure 5 shown.

[0032] In this way, after the concrete hollow beam slab is formed in the cavity formed by the outer edge surface of the mold core 4 and the inner edge surface of the side plate 2, when demoulding is required, the telescopic rod of the hydraulic cylinder 51 can be used to pull the full-length connecting rod 49 to move, so as to drive the support plate 48 to rotate, and the pulling force of the support plate 48 on the hinge seat 46 is used to apply an inward pulling force to the upper and lower wing plates 43, so that the wing plates 43 drive the baffle plates 52 to retract inwardly, thereby realizing its rapid demoulding. The opening principle of the crescent-shaped template 41 is opposite to the above description, so it will not be repeated here.

[0033] like Figure 2 As shown, the wing plate 43 and the connecting plate 42 of the utility model are surrounded by a baffle 52, and the cross section of the mold core 4 is polygonal when it is expanded.

[0034] Preferably, a baffle 53 with a right-angled cross-section is welded on the side of the wing plate 43 facing away from the connecting plate 42, wherein the straight edge of the baffle of one crescent-shaped template 41 is set outward, and the oblique edge of the baffle of the other crescent-shaped template 41 is set outward. When the two crescent-shaped templates 41 are butt-jointed, the oblique edge of the baffle is pressed on the straight edge of the baffle. It should be noted that the baffle can be an L-shaped steel section. By utilizing the baffle design, a sealing structure can be effectively formed between the two crescent-shaped templates 41 after they are butt-jointed.

[0035] It is worth noting that the longitudinal beam 45 of the utility model is a channel steel, and the hinged seat 46 includes a rotating shaft 54 ​​welded on the channel steel and an adapter ring 55 rotatably mounted on the rotating shaft 54. The adapter ring 55 is externally connected to a straight plate 56, and the straight plate 56 is rotatably connected to the support plate 48 by bolts 47.

[0036] The utility model discloses a hydraulic core mold device for a concrete hollow slab beam, which has a simple overall structure. The hydraulic cylinder 51 is located on the end mold 3, which simplifies the operation procedure and is convenient for inspection and maintenance. The through-length connecting rod 49 connects the middle support plate 48, the hinge seat 46 and the wing plate 43 of the crescent-shaped template 41 as a whole. On the one hand, the number of hydraulic cylinders 51 can be greatly reduced, so that the mold core 4 can be opened to form a cavity shape or retracted to form a folded shape, which is convenient for its molding or demoulding. On the other hand, the hydraulic cylinder 51 directly pushes the through-length connecting rod 49 to shorten the stroke of the piston rod.

[0037] Finally, the method of this application is only a preferred implementation scheme and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydraulic core mold device for a concrete hollow slab beam, characterized in that: It includes a bottom plate, a side plate, an end mold and a mold core, the two end molds are installed on the bottom plate at intervals and are connected through the side plates, the end molds, the side plates and the bottom plate are arranged to form a molding cavity, the mold core is installed in the middle of the molding cavity, the mold core includes two relatively arranged crescent-shaped mold plates, and the crescent-shaped mold plate includes an L-shaped connecting plate and two wing plates arranged up and down, the connecting plate is welded to the wing plate, and two adjacent wing plates are connected by hinges on the connecting plate; a longitudinal beam is arranged on the wing plate, a hinge seat is arranged at the end of the longitudinal beam, a support plate is connected to the hinge seat by bolts, a through-length connecting rod is arranged between adjacent support plates, the through-length connecting rod is hinged by an adjusting bolt with adjustable tightness, a hydraulic cylinder is arranged on the end mold, and the telescopic rod of the hydraulic cylinder is connected to the through-length connecting rod.

2. A hydraulic core mold device for a concrete hollow slab beam as claimed in claim 1, characterized in that: Baffles are arranged around the wing plates and the connecting plates, and the cross section of the mold core is polygonal when it is expanded.

3. A hydraulic core mold device for a concrete hollow slab beam as claimed in claim 1, characterized in that: A blocking strip with a right-angled cross section is welded on one side of the wing plate away from the connecting plate.

4. A hydraulic core mold device for a concrete hollow slab beam as claimed in claim 3, characterized in that: The straight edge of the bar of one of the crescent-shaped templates is arranged outward, and the oblique edge of the bar of the other crescent-shaped template is arranged outward. When the two crescent-shaped templates are butt-jointed, the oblique edge of the bar is pressed onto the straight edge of the bar.

5. A hydraulic core mold device for a concrete hollow slab beam as claimed in claim 1, characterized in that: The longitudinal beam is a channel steel, and the hinged seat includes a rotating shaft welded on the channel steel and an adapter ring rotatably mounted on the rotating shaft. A straight plate is externally connected to the adapter ring, and the straight plate is rotatably connected to the support plate via bolts.

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