A spherical keyway composite template for a dam

Abstract

The utility model relates to concrete dam template technical field, concretely relates to a spherical keyway composite template for dam. Purpose is to provide a spherical keyway composite template for dam, the template should be able to improve the drawback of repeatedly welding keyway template to plane template, thereby improve the efficiency of spare storehouse and prolong the service life of template. Technical scheme is a spherical keyway composite template for dam, characterized by: including the steel template of being equipped with ball hole and the semisphere mould of being installed in ball hole and projecting to the front of steel template. The steel template includes board face and back lath, and the back of board face is equipped with steel ring, and the inner hole of steel ring is as ball hole.

Description

Technical Field

[0001] This utility model relates to the field of concrete dam formwork technology, specifically to a spherical keyway composite formwork for dams. Background Technology

[0002] The spherical keyway in dam transverse joints is a common groove structure in dam construction. During construction, the spherical keyway template is typically welded separately to the flat template. If the weld joint is not sufficiently robust, the spherical keyway template can easily detach during concrete pouring. From a construction process perspective, on the one hand, workers need to weld multiple spherical keyway templates to the flat template one by one during the preparation phase, leading to low processing efficiency and significantly increasing preparation time. On the other hand, when the flat template needs to be reused, the protruding parts of the spherical keyway template must be cut off and the flat template ground, and then the welding operation must be repeated when the spherical keyway needs to be installed later. This repeated cutting and welding severely reduces the service life of the flat template, ultimately increasing the cost of reusable materials.

[0003] Therefore, designing a spherical keyway composite template for dams is of great significance. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and provide a spherical keyway composite template for dams. This template should be able to improve the drawbacks of repeatedly welding the keyway template to the flat template, thereby improving the preparation efficiency and extending the service life of the template.

[0005] The technical solution of this utility model is:

[0006] A spherical keyway composite template for dams, characterized in that it includes a steel template with spherical holes and a hemispherical mold installed in the spherical holes and protruding towards the front of the steel template.

[0007] The steel template includes a plate surface and a back rib; a steel ring is provided on the back of the plate surface, and the inner hole of the steel ring serves as the ball hole.

[0008] The hemispherical mold includes a rubber plate with a protruding ring on one side and an airbag fixed to the other side of the rubber plate.

[0009] The steel ring has a plurality of radially extending steel ring holes; the convex ring has a plurality of radially extending convex ring holes; and a plurality of connecting rods are inserted between the convex ring holes and the steel ring holes to fix the hemispherical mold in the spherical hole.

[0010] The air nozzle of the airbag extends from the through hole in the rubber plate.

[0011] The end of the connecting rod is provided with a cap.

[0012] The beneficial effects of this utility model are:

[0013] 1. When pouring the dam section of the spherical keyway, the hemispherical mold is set on the steel formwork and faces the concrete surface, replacing the traditional welding process to quickly assemble the spherical keyway formwork, which greatly shortens the preparation time; during dismantling, the airbag can be separated from the concrete surface by releasing air, which improves the efficiency of demolding.

[0014] 2. When pouring ordinary dam sections, flat molds are used on steel formwork, realizing the integrated reuse of composite formwork to meet the pouring needs of different dam sections.

[0015] 3. By using the socket-fixing method between the connecting rod and the steel formwork, the installation of the mold can be completed quickly, reducing mechanical damage to the steel formwork and effectively extending the service life of the composite formwork. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the hemispherical mold according to an embodiment of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the connecting rod according to an embodiment of the present utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of a planar mold according to an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Steel formwork, 1-1. Board surface, 1-2. Back rib, 1-2-1. Cross back rib, 1-2-2. Frame back rib, 1-2-2. Ball hole, 1.1. Steel ring, 2. Steel ring hole, 2.1. Hemispherical mold, 3. Rubber plate, 3.1. Convex ring, 3.2. Airbag, 3.3. Convex ring hole, 3.4. Air nozzle, 3.5. Connecting rod, 4. Elastic cap, 4.1. Flat mold, 5. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 As shown, a spherical keyway composite template for dams includes a steel template 1, a hemispherical mold 3, and a flat mold 5.

[0024] The steel formwork includes a panel 1-1 and back ribs 1-2. The front of the steel formwork is the concrete side, and the panel has ball holes 1.1. A hemispherical mold is installed in the ball holes and extends into the concrete; a flat mold can also be installed in the ball holes. The back ribs are located on the back of the steel formwork to improve the overall mechanical strength of the panel.

[0025] like Figure 1 As shown, the back rib includes a frame back rib 1-2-2 and a cross back rib 1-2-1 fixed inside the frame back rib. The cross back rib divides the plate surface into four areas, and each area has a ball hole.

[0026] A steel ring 2 is fixed to the plate surface, and the steel ring is located on the back of the steel template. Figure 1 The image shows a steel ring positioned at the center of each region. The inner hole of the steel ring serves as the spherical hole. The steel ring has a plurality of circumferentially arranged steel ring holes 2.1, which extend radially and penetrate the inner and outer circumferential surfaces of the steel ring. The hemispherical mold and the flat mold are fixed to the steel template by the steel ring.

[0027] like Figure 2 As shown, the hemispherical mold includes a rubber plate 3.1 and an air bladder 3.3. A raised ring 3.2 is provided on one side edge of the rubber plate, the size of which is suitable for the inner hole of the steel ring. The air bladder is fixed to the other side of the rubber plate. When inflated, the air bladder is hemispherical. The air bladder has an air nozzle 3.5, which extends from the through hole (omitted in the figure) of the rubber plate.

[0028] The radius of the airbag is the same as that of the rubber plate. By inflating the airbag through the air nozzle, the airbag cavity can expand into a hemispherical shape and bulge towards the front of the steel template, thus serving as a spherical keyway template for casting spherical keyways.

[0029] The convex ring is provided with a plurality of convex ring holes 3.4 arranged in a circular pattern. These convex ring holes are arranged corresponding to the steel ring holes. These convex ring holes extend radially and penetrate the inner and outer circumferential surfaces of the convex ring.

[0030] The hemispherical mold and the steel ring are fixed together by several connecting rods 4. The connecting rods are inserted radially into the holes of the convex ring and the steel ring, thus fixing the hemispherical mold within the spherical holes. Figure 3 As shown, in order to prevent the connecting rod from slipping, elastic caps 4.1 with slightly larger outer diameters are set at both ends of the connecting rod. During installation or disassembly, force is required to push and deform the elastic caps so that they can pass through the convex ring hole and the steel ring hole.

[0031] like Figure 4As shown, the planar mold includes a rubber plate 3.1, with a raised ring 3.2 and a raised ring hole 3.4. Unlike the hemispherical mold, the planar mold does not have an air bladder and is used for casting dam sections that do not require spherical keyways.

[0032] The working principle of this utility model:

[0033] 1. When pouring dam sections that require spherical keyways, install hemispherical molds in steel formwork with the airbags facing the concrete side. Inflate the airbags with air nozzles to make them expand into a hemispherical shape and maintain pressure, which serves as formwork support. After installation, concrete pouring operations can be carried out.

[0034] 2. When removing the formwork, the air inlet is released to allow the airbag to separate from the concrete surface in advance, making it easier to remove and improving work efficiency;

[0035] 3. When pouring dam sections that do not require spherical keyways, the flat mold is installed in the steel formwork to ensure the flatness of the front of the steel formwork, thus realizing the multi-purpose use of composite formwork.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spherical keyway composite template for dams, characterized in that: It includes a steel template (1) with a ball hole (1.1) and a hemispherical mold (3) installed in the ball hole and protruding towards the front of the steel template.

2. The spherical keyway composite template for dams according to claim 1, characterized in that: The steel template includes a plate (1-1) and a back rib (1-2); a steel ring (2) is provided on the back of the plate, and the inner hole of the steel ring serves as the ball hole.

3. A spherical keyway composite template for dams according to claim 2, characterized in that: The hemispherical mold includes a rubber plate (3.1) with a protruding ring (3.2) on one side and an airbag (3.3) fixed to the other side of the rubber plate.

4. A spherical keyway composite template for dams according to claim 3, characterized in that: The steel ring is provided with a plurality of radially extending steel ring holes (2.1); the convex ring is provided with a plurality of radially extending convex ring holes (3.4); and a plurality of connecting rods (4) are inserted between the convex ring holes and the steel ring holes so that the hemispherical mold is fixed in the spherical hole.

5. A spherical keyway composite template for dams according to claim 4, characterized in that: The air nozzle (3.5) of the airbag extends from the through hole in the rubber plate.

6. A spherical keyway composite template for dams according to claim 5, characterized in that: The end of the connecting rod is provided with a cap (4.1).

Images