Detection device for curing strength of concrete

Abstract

The utility model discloses a concrete curing strength detection device, which belongs to the technical field of concrete curing strength detection and comprises a supporting table, a protective cover is fixedly connected to the top end of the supporting table, an electric hydraulic cylinder is fixedly connected to the middle of the top end of the protective cover, and the telescopic end of the electric hydraulic cylinder movably penetrates through the protective cover and is fixedly connected with a pressing plate. An opening is formed in the front side wall of the protective cover; when the device for detecting the curing strength of the concrete is used, a concrete sample of which the fixed strength is to be detected can be placed on the top of the supporting table, the pressure applying plate moves downwards by starting the electric hydraulic cylinder, the pressure can be applied to the concrete sample, and in the downward moving process, two transmission rods and two guide channels are arranged in a matched manner, so that the strength of the concrete sample can be detected. Furthermore, the two opening and closing plates are oppositely moved and closed, so that the phenomenon that fragments of a concrete sample splash to hurt external personnel in the process of detecting the curing strength of the concrete can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of concrete curing strength testing technology, specifically relating to a device for testing concrete curing strength. Background Technology

[0002] Currently, it is necessary to test the strength of concrete before construction begins. Therefore, concrete curing strength testing devices are required to assess the mechanical strength acquired by concrete during the curing process. These devices typically determine the compressive, tensile, and flexural strength characteristics of the cured concrete by applying different types of mechanical or physical forces, such as impact, strain, and sound wave propagation.

[0003] Existing concrete curing strength testing devices have the following drawbacks during use:

[0004] Before testing concrete samples, the sample is typically placed on a testing platform, and a hydraulic cylinder pushes a pressure plate downward to apply pressure to the sample. However, during testing, concrete samples tend to splash everywhere, and the testing device lacks a protective structure, potentially injuring outside personnel. Even if a protective structure is provided, it consists of manually operated protective doors that must be opened and closed after the sample is placed in the platform. The doors cannot be opened and closed simultaneously as the pressure plate moves up and down, making the process extremely inconvenient. Therefore, a testing device for concrete curing strength is needed. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the curing strength of concrete, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a testing device for concrete curing strength, comprising a support platform, a protective cover fixedly connected to the top of the support platform, an electric hydraulic cylinder fixedly connected to the middle of the top of the protective cover, the telescopic end of the electric hydraulic cylinder movably penetrating the protective cover and fixedly connected to a pressure plate, and an opening provided on the front side wall of the protective cover.

[0007] It also includes a linkage opening and closing guard structure and a linkage synchronous clamping and loosening structure. The linkage opening and closing guard structure is installed on the top of the pressure plate and connected to the front opening of the protective cover.

[0008] The linkage synchronous clamping structure is installed on the top of the support platform and the rear side wall of the protective cover, and is connected to the linkage opening and closing guard structure.

[0009] In a preferred embodiment, the linkage opening and closing protective structure includes a guide groove opened near the top of the front side wall of the protective cover. Two guide bars are symmetrically arranged and slidably connected in the guide groove. The vertical cross-section of the guide bars is convex. Opening and closing plates are fixed to the front side of the two guide bars. Transparent glass is fixed to the observation windows opened on the two opening and closing plates.

[0010] In a preferred embodiment, both of the opening and closing plates have guide channels with a vertical cross-section shaped like a hockey stick on their backs. One end of a transmission rod is movably connected to each guide channel, and the other end of each transmission rod is fixed to the top of the pressure plate by a T-shaped rod.

[0011] In a preferred embodiment, the linkage synchronous clamping and loosening structure includes two symmetrically arranged clamping plates that are movable on the top of the support platform. A transmission plate is fixedly connected to one of the opposite side walls of the two clamping plates. The top of each transmission plate is provided with an inclined surface. The two inclined surfaces are symmetrically arranged. Rollers are movably attached to the top of each inclined surface. The rollers are rotatably connected to the back of the T-shaped rod through a rotating shaft.

[0012] In a preferred embodiment, each of the two clamping plates has a slider with an I-shaped vertical cross-section fixedly connected to its rear end, and the slider is slidably connected to a groove opened in the rear side wall of the protective cover.

[0013] In a preferred embodiment, the opposite ends of the two sliders are connected to the inner wall of the groove by springs.

[0014] Compared with the prior art, the concrete curing strength testing device provided by this utility model has at least the following beneficial effects:

[0015] In this invention, when using the concrete curing strength testing device, the concrete sample to be tested for its curing strength can be placed on the top of the support platform. By activating the electric hydraulic cylinder, the pressure plate moves downward, applying pressure to the concrete sample. During the downward movement, the two transmission rods and two guide channels cause the two opening and closing plates to move towards each other and close. This prevents concrete fragments from flying and injuring people during the concrete curing strength testing process. Furthermore, during the downward movement of the pressure plate, the rollers and the inclined surface at the top of the transmission plate cause the two clamping plates to move towards each other via sliders, compressing the springs and clamping and fixing the concrete sample. This effectively ensures that the concrete sample does not easily shift during the testing process, thus preventing the accuracy of the test results from being affected. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional front view structure of this utility model;

[0017] Figure 2 This is a three-dimensional view of the rear side of the protective cover of this utility model after it has been cut open.

[0018] In the diagram: 1. Support platform; 2. Protective cover; 21. Electric hydraulic cylinder; 22. Pressure plate; 3. Linked opening and closing guard structure; 31. Opening and closing plate; 32. Transparent glass; 33. Guide bar; 34. Guide channel; 35. Transmission rod; 36. T-shaped rod; 4. Linked synchronous clamping and loosening structure; 41. Clamping plate; 42. Slider; 43. Spring; 44. Transmission plate; 45. Inclined surface; 46. Roller. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments.

[0020] To make the objectives, technical solutions, and advantages of the present utility model embodiments clearer, the technical solutions of the present utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Example

[0023] Before testing concrete samples, the sample is usually placed on the testing platform, and then the pressure plate is pushed down by a hydraulic cylinder to apply pressure to the sample. However, during the test, the concrete sample is prone to splashing everywhere, and the testing device does not have a protective structure. This means that the concrete sample may splash and injure outside personnel. Even if a protective structure is set, it is a protective door structure that needs to be manually opened and closed. After the sample is placed in, the two protective doors need to be manually closed. It is impossible to link the opening and closing of the two protective doors as the pressure plate moves up and down, which is very inconvenient to use.

[0024] For this purpose, please refer to Figure 1-2 This utility model provides a testing device for concrete curing strength, including: a support platform 1, a protective cover 2 fixedly connected to the top of the support platform 1, an electric hydraulic cylinder 21 fixedly connected to the middle of the top of the protective cover 2, the telescopic end of the electric hydraulic cylinder 21 movably passes through the protective cover 2 and is fixedly connected to a pressure plate 22, and the front side wall of the protective cover 2 is provided with an opening.

[0025] It also includes a linkage opening and closing guard structure 3 and a linkage synchronous clamping and loosening structure 4. The linkage opening and closing guard structure 3 is installed on the top of the pressure plate 22 and connected to the front opening of the protective cover 2.

[0026] The linkage synchronous clamping structure 4 is installed on the top of the support platform 1 and the rear side wall of the protective cover 2, and is connected to the linkage opening and closing guard structure 3.

[0027] Further as Figure 1-2 As shown, it is worth noting that in order to accurately apply pressure during the downward movement of the pressure plate 22, to cause the two opening and closing plates 31 to close automatically, and to ensure that concrete fragments generated during the testing process are not easily splashed out and injure outside personnel, a linkage opening and closing protective structure 3 is set up. This includes a guide groove opened near the top of the front side wall of the protective cover 2. Two symmetrically arranged guide strips 33 are slidably connected in the guide groove. The vertical cross-section of the guide strips 33 is convex. The front side of the two guide strips 33 is fixed to the opening and closing plate 31. The observation window opened on the two opening and closing plates 31 is fixed with transparent glass 32. The back of the two opening and closing plates 31 is provided with a guide channel 34 with a vertical cross-section in the shape of a hockey stick. One end of the transmission rod 35 is movably connected in the guide channel 34. The other end of the two transmission rods 35 is fixed to the top of the pressure plate 22 through a T-shaped rod 36.

[0028] The width of the guide channel 34 is equal to the diameter of the transmission column, and the transparent glass 32 allows external personnel to easily observe the status during the testing process.

[0029] Further as Figure 1-2 As shown, it is worth noting that in order to enable the two clamping plates 41 to move relative to each other during the downward movement of the pressure plate 22, a linkage synchronous clamping and loosening structure 4 is provided, which includes two symmetrically arranged clamping plates 41 that are movable on the top of the support platform 1. A transmission plate 44 is fixedly connected to the opposite side wall of the two clamping plates 41. The top of the transmission plate 44 is provided with an inclined surface 45. The two inclined surfaces 45 are symmetrically arranged. A roller 46 is movably connected to the top of the inclined surface 45. The roller 46 is rotatably connected to the back of the T-shaped rod 36 through a rotating shaft. A slider 42 with an I-shaped vertical cross section is fixedly connected to the rear end of the two clamping plates 41. The slider 42 is slidably connected to the groove opened in the rear side wall of the protective cover 2. The opposite ends of the two sliders 42 are connected to the inner wall of the groove through a spring 43.

[0030] Roller 46 moves up to the attached Figure 2 In the middle state, under the action of spring 43, the two clamping plates 41 can move away from each other and open.

[0031] In summary, when using this concrete curing strength testing device, the concrete sample to be tested for its curing strength can be placed on the top of the support platform 1. By activating the electric hydraulic cylinder 21, the pressure plate 22 is moved downward, applying pressure to the concrete sample. During the downward movement, the two transmission rods 35 and the two guide channels 34 work together to move the two opening and closing plates 31 towards each other and close. This prevents concrete sample fragments from flying and injuring people during the concrete curing strength testing process. Furthermore, during the downward movement of the pressure plate 22, the rollers 46 and the inclined surface 45 on the top of the transmission plate 44 cause the two clamping plates 41 to move towards each other via the sliders 42. The springs 43 are compressed, clamping and fixing the concrete sample. This effectively ensures that the concrete sample is not easily displaced during the testing process, thus preventing the accuracy of the test results from being affected.

[0032] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by a person skilled in the art to which this utility model pertains. The words "comprising" or "including" and similar terms used in this utility model mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The words "connected" or "linked" and similar terms are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the curing strength of concrete, comprising a support platform (1), characterized in that, The top of the support platform (1) is fixedly connected to a protective cover (2), and an electric hydraulic cylinder (21) is fixedly connected to the middle of the top of the protective cover (2). The telescopic end of the electric hydraulic cylinder (21) moves through the protective cover (2) and is fixedly connected to a pressure plate (22). The front side wall of the protective cover (2) is provided with an opening. It also includes a linkage opening and closing guard structure (3) and a linkage synchronous clamping and loosening structure (4). The linkage opening and closing guard structure (3) is installed on the top of the pressure plate (22) and connected to the front opening of the protective cover (2). The linkage synchronous clamping structure (4) is installed on the top of the support platform (1) and the rear side wall of the protective cover (2), and is connected to the linkage opening and closing guard structure (3).

2. The device for testing the curing strength of concrete according to claim 1, characterized in that: The linkage opening and closing protective structure (3) includes a guide groove opened near the top of the front side wall of the protective cover (2). Two guide bars (33) are symmetrically arranged and slidably connected in the guide groove. The vertical cross section of the guide bars (33) is convex. The front side of the two guide bars (33) is fixed with an opening and closing plate (31). The observation window opened on the two opening and closing plates (31) is fixed with transparent glass (32).

3. The device for testing the curing strength of concrete according to claim 2, characterized in that: Both of the opening and closing plates (31) have a guide channel (34) with a vertical cross section in the shape of a hockey stick on their backs. One end of a transmission rod (35) is movably connected in the guide channel (34), and the other end of the two transmission rods (35) is fixed to the top of the pressure plate (22) by a T-shaped rod (36).

4. The device for testing the curing strength of concrete according to claim 3, characterized in that: The linkage synchronous clamping structure (4) includes two symmetrically arranged clamping plates (41) movable on the top of the support platform (1). A transmission plate (44) is fixedly connected to one side wall of each clamping plate (41) facing away from each other. The top of each transmission plate (44) is provided with an inclined surface (45). The two inclined surfaces (45) are symmetrically arranged. A roller (46) is movably connected to the top of each inclined surface (45). The roller (46) is rotatably connected to the back of the T-shaped rod (36) through a rotating shaft.

5. The device for testing the curing strength of concrete according to claim 4, characterized in that: Both clamping plates (41) have a slider (42) with a vertical cross section in the shape of an I-shape fixed to their rear ends. The slider (42) is slidably connected to the groove opened on the rear side wall of the protective cover (2).

6. The device for testing the curing strength of concrete according to claim 5, characterized in that: The opposite ends of the two sliders (42) are connected to the inner wall of the groove by springs (43).

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