A concrete specimen forming device

Abstract

The present invention belongs to the technical field of structural assembly and relates to a concrete specimen forming device, which includes a bottom plate and side plates arranged on the bottom plate. The side plates form a rectangle on the bottom plate, with its short sides being two relatively arranged first side plates and its long sides being two relatively arranged second side plates; it also includes two arc control modules respectively arranged on the two second side plates and arranged oppositely; a single arc control module includes a third side plate and arc control units arranged at both ends of the third side plate. The arc control unit includes an arc-shaped side wall. A "dumbbell"-shaped cavity is formed among the first side plate, the second side plate, and the arc control unit. The present invention can accurately prepare concrete tensile test specimens, can ensure the flatness of the surface of the cast specimens, and has the advantages of reasonable design, simple and light structure, easy disassembly and demoulding, and environmental protection and high efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural assembly and relates to a concrete specimen forming device. Background Art

[0002] Concrete is the most widely used and largest consumption building engineering material, and the axial tensile strength of concrete is one of the important mechanical property indexes. Due to its own characteristics, the tensile strength of concrete is one-tenth of the compressive strength, and generally, the tensile strength of concrete is rarely tested in engineering. At present, there is little research on the forming molds for preparing concrete tensile test specimens or the existing specimen forming molds are relatively complex, and there is no ideal test mold. However, for new concrete materials or the strengthening of specific parts of structures, it is necessary to verify the tensile performance of concrete materials. Therefore, it is of great significance to develop a device with simple operation, light and reasonable structure.

[0003] Through the retrieval of existing technical literature, it is found that although there are patent literatures on the equipment for preparing concrete tensile test specimens, when preparing multiple groups of concrete specimens, the tensile test and specimen pouring cannot be carried out simultaneously, and a large number of molds need to be prepared, resulting in material waste and time consumption; or the deformed section of the prepared specimen is a broken line, and stress concentration is likely to occur at the shape change point of the concrete specimen, and it is easy to be pulled damaged in the non-test section. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a concrete specimen forming device, which provides a mold that can prepare concrete specimens with a smoothly transitioning deformation zone.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A concrete specimen forming device includes a bottom plate and side plates arranged on the bottom plate. The side plates enclose a rectangle on the bottom plate, with its short sides being two relatively arranged first side plates and its long sides being two relatively arranged second side plates; it also includes two arc control modules respectively arranged on the two second side plates and arranged oppositely; a single arc control module includes a third side plate and arc control units arranged at both ends of the third side plate. The arc control unit includes an arc-shaped side wall. A "dumbbell"-shaped cavity is formed among the first side plate, the second side plate, and the arc control unit.

[0007] Optionally, the bottom plate is provided with a first groove for installing the first side plate and the second side plate, and the edges of the first side plate and the second side plate are embedded in the first groove.

[0008] Optionally, the second side plate is provided with a second groove, and the first side plate is embedded in the second side plate through the second groove.

[0009] Optionally, a first screw hole is provided on the bottom plate, and second screw holes matching the first screw hole are provided on one side or both sides of the arc control unit. The arc control unit is arranged on the bottom plate through screws, and the screws pass through the first screw hole and the second screw hole; a first groove for installing the first side plate and the second side plate is provided on the bottom plate, and the edges of the first side plate and the second side plate are embedded in the first groove.

[0010] Optionally, in a single arc control module, clamping grooves are provided on the opposite sides of two opposite arc control units, and two ends of the third side plate are respectively embedded in the clamping grooves on the two arc control units.

[0011] Optionally, a fixing groove is provided on one side of the third side plate facing the second side plate, a pin hole is provided at the corresponding position of the second side plate, a first pin is installed in the pin hole, and the first pin passes through the second side plate and is positioned through the fixing groove.

[0012] Optionally, two opposite second side plates are connected by second pins arranged at both ends thereof; the second pins are arranged outside two relatively arranged first side plates.

[0013] Optionally, a fixture is further included, and the fixture includes a chuck, an upper cover plate, a lower cover plate, and mounting posts; one side of the chuck is an open side, and the inner cavity shape thereof matches the "dumbbell"-shaped cavity formed among the first side plate, the second side plate, and the arc control unit; the upper cover plate and the lower cover plate are respectively arranged on both sides of the chuck; the mounting posts are arranged on one side of the chuck away from its open side.

[0014] Optionally, the upper cover plate and the lower cover plate are arranged on the chuck through third pins.

[0015] The beneficial effects of the present invention are as follows:

[0016] Based on the traditional concrete tensile test piece mold, in combination with the similarity in shape between the concrete tensile test piece and the flexural test piece, and the requirement of making the mold multi-functional, and combining the advantages of light weight and assemblability of the aluminum alloy material, the present invention provides a multi-functional concrete test piece forming device, which is beneficial to the angle control of the tensile concrete test piece; combined with the free assembly of the multi-functional mold, this set of equipment is applicable to the preparation of flexural test pieces, improves the utilization rate of the mold, is light in structure, and is simple to operate.

[0017] The present invention can accurately prepare concrete tensile test specimens. The mold is made of alloy, which reduces the overall weight of the equipment on the premise of ensuring the strength and stiffness of the mold, and also ensures the flatness of the surface of the specimens poured out. The present invention also has the advantages of reasonable design, simple and light structure, easy disassembly and demolding, and environmental protection and high efficiency.

[0018] Other advantages, objects and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned by practice of the present invention. The objects and other advantages of the present invention may be realized and obtained by the following description of the specification. Brief Description of the Drawings

[0019] In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, wherein:

[0020] Figure 1 is a top view of the present invention;

[0021] Figure 2 is a side view of the present invention;

[0022] Figure 3 is a schematic diagram of the position of the second groove;

[0023] Figure 4 is a schematic diagram of the position of the first groove;

[0024] Figure 5 is a schematic diagram of the arc control module;

[0025] Figure 6 is a top view of the fixture;

[0026] Figure 7 is a front view of the fixture;

[0027] Figure 8 is a left view of the fixture. Detailed Description of the Preferred Embodiments

[0028] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention schematically. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Please refer to Figures 1-8 , and the component numbers in the drawings respectively represent: the first side plate 1, the second side plate 2, the third side plate 3, the bottom plate 4, the arc control unit 5, the second screw hole 6, the gasket 7, the first pin 8, the second pin 9, the first screw hole 10, the first groove 11, the second groove 33, the chuck 12, the upper cover plate 13, the lower cover plate 14, and the third pin 15.

[0032] A concrete specimen forming device includes a bottom plate 4 and side plates arranged on the bottom plate 4. The side plates enclose a rectangle on the bottom plate 4, the short sides of which are two relatively arranged first side plates 1, and the long sides of which are two relatively arranged second side plates 2; it also includes two arc control modules respectively arranged on the two second side plates 2 and arranged oppositely; a single arc control module includes a third side plate 3 and arc control units 5 arranged at both ends of the third side plate 3. The arc control unit 5 includes an arc-shaped side wall. A "dumbbell"-shaped cavity is formed among the first side plate 1, the second side plate 2, and the arc control unit 5.

[0033] Optionally, a first groove 11 for installing the first side plate 1 and the second side plate 2 is formed on the bottom plate 4. The edges of the first side plate 1 and the second side plate 2 are embedded in the first groove 11. The first groove 11 is rectangular, and its two opposite sides are parallel to each other in pairs, which can increase the sealing performance of the lower edge of the mold and prevent the seepage of concrete. A second groove 33 is formed on the second side plate 2, and the first side plate 1 is embedded in the second side plate 2 through the second groove 33. A first screw hole 10 is formed on the bottom plate 4, and a second screw hole 6 matching the first screw hole 10 is formed on one side or both sides of the arc control unit 5. The arc control unit 5 is fixed to the bottom plate 4 by screws, and the screws pass through the first screw hole 10 and the second screw hole. According to the different passing directions, the screws can be hidden screws arranged on the bottom plate 4 or external screws passing through the arc control unit 5. A gasket 7 is further provided between the first screw hole 10 and the second screw hole and the screw arranged diagonally. The gasket 7 can not only prevent the screw from slipping but also prevent too much concrete from burying the screw. The length direction of the gasket 7 must be arranged perpendicular to the third side plate 3, and the gasket 7 presses the end of the third side plate 3 to prevent the connection between the third side plate 3 and the bottom plate 4 from being loose. In a single arc control module, clamping grooves are formed on the opposite sides of two opposite arc control units 5, and the two ends of the third side plate 3 are respectively embedded in the clamping grooves on the two arc control units 5.

[0034] Optionally, a fixing groove is formed on one side of the third side plate 3 facing the second side plate 2, a pin hole is formed at the corresponding position of the second side plate 2, and a first pin 8 is installed in the pin hole. The first pin 8 passes through the second side plate 2 and is positioned through the fixing groove. Two opposite second side plates 2 are connected by second pins 9 arranged at both ends thereof. The second pins 9 are arranged outside the two relatively arranged first side plates 1. The fixture further includes a chuck 12, an upper cover plate 13, a lower cover plate 14, and a mounting post. One side of the chuck 12 is an open side, and the inner cavity shape thereof matches the "dumbbell" - shaped cavity formed among the first side plate 1, the second side plate 2, and the arc control unit 5. The upper cover plate 13 and the lower cover plate 14 are respectively arranged on both sides of the chuck 12. The mounting post is arranged on the side of the chuck 12 away from its open side. The upper cover plate 13 and the lower cover plate 14 are arranged on the chuck 12 through a third pin 15.

[0035] The present invention can manufacture specimens with a smooth deformation zone through the arc control module, or can disassemble the arc control module to manufacture conventional cube specimens. The present invention can be made of aluminum alloy materials to ensure the lightness of the overall structure, facilitate disassembly, assembly, and movement. After the specimen is manufactured, the specimen can be clamped by the fixture and installed into the testing machine through the mounting post for subsequent tests.

[0036] Based on the traditional mold for concrete tensile test specimens, considering the similarity in shape between concrete tensile test specimens and flexural test specimens, and meeting the requirement of making the mold multi-functional, this invention combines the advantages of light weight and assemblability of aluminum alloy materials to propose a multi-functional concrete specimen forming device, which is beneficial to the angle control of tensile concrete specimens. Combined with the free assembly of the multi-functional mold, this set of equipment is applicable to the preparation of flexural test specimens, improving the utilization rate of the mold, being light in structure and simple in operation. This invention can accurately prepare concrete tensile test specimens. The mold is made of alloy, which reduces the overall weight of the equipment while ensuring the strength and stiffness of the mold, and also guarantees the flatness of the surface of the cast specimens. This invention also has the advantages of reasonable design, simple and light structure, easy disassembly and demolding, and environmental protection and high efficiency.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A concrete specimen forming device, characterized in that, It includes a bottom plate and side plates arranged on the bottom plate. The side plates enclose a rectangle on the bottom plate. Its short sides are two relatively arranged first side plates, and its long sides are two relatively arranged second side plates. It also includes two arc control modules respectively arranged on the two second side plates and arranged oppositely. A single arc control module includes a third side plate and arc control units arranged at both ends of the third side plate. The arc control unit includes an arc-shaped side wall. A "dumbbell"-shaped cavity is formed among the first side plate, the second side plate, and the arc control unit. A first screw hole is formed on the bottom plate. A second screw hole matching the first screw hole is formed on one side or both sides of the arc control unit. The arc control unit is arranged on the bottom plate by screws, and the screws pass through the first screw hole and the second screw hole. A first groove for installing the first side plate and the second side plate is formed on the bottom plate. The edges of the first side plate and the second side plate are embedded in the first groove.

2. The concrete specimen forming device as described in claim 1, wherein A second groove is formed on the second side plate. The first side plate is embedded in the second side plate through the second groove.

3. The concrete specimen forming device as described in claim 1, wherein, In a single arc control module, clamping grooves are formed on the opposite sides of two opposite arc control units. Both ends of the third side plate are respectively embedded in the clamping grooves on the two arc control units.

4. The concrete specimen forming device as described in claim 3, wherein A fixing groove is formed on the side of the third side plate facing the second side plate. A pin hole is formed at the corresponding position of the second side plate. A first pin is installed in the pin hole. The first pin passes through the second side plate and is positioned through the fixing groove.

5. The concrete specimen forming device according to claim 1, wherein The two opposite second side plates are connected by second pins arranged at both ends of them. The second pins are arranged outside the two relatively arranged first side plates.

6. The concrete specimen forming device as described in claim 1, wherein, It also includes a fixture. The fixture includes a chuck, an upper cover plate, a lower cover plate, and a mounting post. One side of the chuck is an open side, and the shape of its inner cavity matches the "dumbbell"-shaped cavity formed among the first side plate, the second side plate, and the arc control unit. The upper cover plate and the lower cover plate are respectively arranged on both sides of the chuck. The mounting post is arranged on the side of the chuck away from its open side.

7. The concrete specimen forming device according to claim 6, characterized in that, The upper cover plate and the lower cover plate are arranged on the chuck by third pins.

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