A concrete slump detection device

Abstract

The utility model discloses a kind of concrete slump detection devices, it includes the frame of horizontal arrangement, platform plate is arranged in the frame, the platform plate is connected with rotating shaft, rotating disc is connected on the rotating shaft, first limiting hole is horizontally opened on the frame, the rotating disc, first insertion rod is slidably inserted in the first limiting hole, slump cone cylinder is placed in the central position of the platform plate, slump cylinder stabilizing assembly and slump cylinder lifting assembly are installed on the frame;The utility model has the beneficial effect: the utility model designs the platform plate with degree turnover function as the test platform of slump cone cylinder, can quickly clean away the concrete of previous test, convenient and fast, to realize continuous multiple slump detection, while designing special slump cylinder stabilizing assembly and slump cylinder lifting assembly, guarantee the stability of slump cone cylinder in the process of pulling out, to improve the accuracy of detection, worthy of wide range of use.

Description

Technical Field

[0001] This utility model relates to the technical field of slump testing equipment, and in particular to a concrete slump testing device. Background Technology

[0002] Slump is a method and indicator for determining the workability of concrete. On construction sites and in laboratories, slump tests are typically performed to determine the fluidity of the mixture, supplemented by visual experience to assess cohesiveness and water retention. The specific testing method involves using a funnel-shaped slump cone with a top opening of 100mm, a bottom opening of 200mm, and a height of 300mm. Concrete is poured in three stages, and after each filling, a tamping hammer is used to evenly tap the cone 25 times from the outside in, compacting and smoothing the surface. Then, the cone is slowly pulled up. The concrete collapses due to its own weight. The slump is calculated by subtracting the height of the highest point of the collapsed concrete from the cone height (300mm). However, this slump testing method generally has the following technical problems: 1. When manually pulling the slump cone upwards, it is difficult to ensure that the cone does not tilt, affecting the accuracy of the test; 2. Slump testing usually involves multiple measurements and taking an average value. After each test, the collapsed concrete needs to be cleaned up, which is time-consuming and labor-intensive, affecting the continuity of the measurement. Utility Model Content

[0003] The purpose of this invention is to provide a concrete slump testing device to solve the technical problems in the prior art where concrete is difficult to clean after slump testing and the slump cylinder is not stable enough during testing.

[0004] The utility model discloses a concrete slump testing device, comprising a horizontally arranged frame with several vertically installed legs at the bottom of the frame. A platform plate is installed inside the frame, and a rotating shaft is connected to the platform plate. The rotating shaft is rotatably connected to the frame, and a turntable is connected to the rotating shaft. First limiting holes are horizontally formed on both the frame and the turntable, and a first insertion rod is slidably inserted into the first limiting holes. A slump cone is placed at the center of the platform plate. A slump cone stabilizing component and a slump cone lifting component are installed on the frame. The slump cone lifting component is used to vertically lift the slump cone upwards, and the slump cone stabilizing component is used to prevent the slump cone from tilting during the lifting process.

[0005] Furthermore, the area of ​​the platform plate is more than three times the projected area of ​​the collapse cone.

[0006] Furthermore, the collapse cone stabilizing assembly includes two sliding columns positioned on either side of the collapse cone. The sliding columns are vertically fixed on the frame. A wing plate is horizontally connected to the outer wall of the collapse cone. A through hole is vertically opened on the wing plate. The sliding column is slidably connected to the through hole. A limiting platform is connected to the top of the sliding column.

[0007] Furthermore, a compression spring is fitted onto the sliding column, and the two ends of the compression spring are in contact with the limiting platform and the wing plate, respectively.

[0008] Furthermore, the collapse cone lifting assembly includes a rack vertically fixedly installed on the collapse cone, the rack meshing with a gear, the gear being rotatably connected to a bracket, the bracket being fixedly installed on the frame, a rocker arm being connected to the rotation shaft of the gear, and a second limiting hole being provided on both the bracket and the rocker arm, and a second insertion rod being slidably inserted into the second limiting hole.

[0009] Furthermore, a collection trough is provided directly below the platform plate.

[0010] The beneficial effects of this utility model are as follows: This utility model designs a platform plate with a flip-over function as a test platform for the slump cone, which can quickly clean up the concrete from the previous test, making it convenient and fast, thereby enabling continuous multiple slump tests. At the same time, it designs a dedicated slump cone stabilizing component and a slump cone lifting component to ensure the stability of the slump cone during the extraction process, thereby improving the accuracy of the test. It is worth promoting and using on a large scale. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a perspective view of the utility model in use; Figure 3 for Figure 1 A magnified structural diagram of part A; Figure 4 This is the right view of the present invention; In the figure, the components are: frame 1, support leg 2, platform plate 3, collapse cone 4, wing plate 5, sliding column 6, limiting platform 7, compression spring 8, bracket 9, gear 10, rack 11, rocker arm 12, first limiting hole 13, first insertion rod 14, rotating shaft 15, turntable 16, second limiting hole 17, second insertion rod 18, and collection trough 19. Detailed Implementation

[0012] like Figures 1 to 3As shown, a concrete slump testing device includes a horizontally arranged frame 1, with four vertically mounted support legs 2 at the bottom of the frame 1. A platform plate 3 is disposed inside the frame 1, and a rotating shaft 15 is connected to the platform plate 3. The rotating shaft 15 is rotatably connected to the frame 1, and a turntable 16 is connected to the rotating shaft 15. First limiting holes 13 are horizontally formed on both the frame 1 and the turntable 16. Specifically, two first limiting holes 13 are formed on the frame 1 (located on both sides of the rotating shaft 15) to accommodate different limiting requirements. A first insertion rod 14 is slidably inserted into the limiting hole 13. A collapse cone 4 is placed at the center of the platform plate 3. A collapse cone stabilizing component and a collapse cone lifting component are installed on the frame 1. The collapse cone lifting component is used to lift the collapse cone 4 vertically upward. The collapse cone stabilizing component is used to prevent the collapse cone 4 from tilting during the lifting process. In order to ensure that the maximum area of ​​the concrete after collapse is less than the area of ​​the platform plate 3 (i.e., the concrete after collapse does not contact the edge of the platform plate 3), the area of ​​the platform plate 3 is 5 times the projected area of ​​the collapse cone.

[0013] More specifically, such as Figure 2 As shown, to improve the stability of the collapse cone 4 during lifting, the collapse cone stabilization assembly includes two sliding columns 6 positioned on either side of the collapse cone 4. The sliding columns 6 are vertically fixed to the frame 1. A wing plate 5 is horizontally connected to the outer wall of the collapse cone 4, and a through hole is vertically formed on the wing plate 5. The sliding column 6 is slidably connected to the through hole. A limiting platform 7 is connected to the top of the sliding column 6. To ensure the collapse cone 4 fully fits against the platform plate 3, a compression spring 8 is fitted onto the sliding column 6. The two ends of the compression spring 8 contact the limiting platform 7 and the wing plate 5 respectively, applying pressure to the collapse cone 4. Vertically downward elastic force; to improve operability and make it more convenient to use, the slump cone lifting assembly includes a rack 11 vertically fixedly installed on the slump cone 4, the rack 11 meshing with a gear 10, the gear 10 being rotatably connected to a bracket 9, the bracket 9 being fixedly installed on the frame 1, a rocker arm 12 being connected to the rotation shaft of the gear 10, and a second limiting hole 17 being provided on both the bracket 9 and the rocker arm 12, a second insertion rod 18 being slidably inserted into the second limiting hole 17, and a collection trough 19 being provided directly below the platform plate 3 for better collection of the tested concrete.

[0014] In practical use, such as Figures 1 to 4As shown, firstly, the concrete to be tested is loaded into the slump cone 4 and vibrated with a vibrator. After compaction, the top is leveled. Then, the crank 12 is slowly turned by hand. Due to the transmission action of the gear 10 and rack 11, the slump cone 4 rises slowly. At the same time, due to the limiting action of the sliding column 6, the slump cone 4 will not tilt during the rise. The concrete to be tested collapses due to its own weight. The height of the collapsed concrete can be measured with a measuring ruler. After the test is completed, the turntable 16 is rotated to make the platform plate 3 rotate 180 degrees, so that the collapsed concrete falls downward into the collection tank 19 for collection. At this time, the upward-facing surface of the platform plate 3 can be directly used for slump testing without being affected, realizing rapid and continuous testing.

[0015] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A concrete slump testing device, characterized in that: It includes a horizontally arranged frame (1), with several legs (2) vertically installed at the bottom of the frame (1), a platform plate (3) inside the frame (1), a rotating shaft (15) connected to the platform plate (3), the rotating shaft (15) being rotatably connected to the frame (1), a turntable (16) connected to the rotating shaft (15), a first limiting hole (13) being horizontally opened on both the frame (1) and the turntable (16), a first insertion rod (14) being slidably inserted into the first limiting hole (13), a collapse cone (4) being placed at the center of the platform plate (3), a collapse cone stabilizing component and a collapse cone lifting component being installed on the frame (1), the collapse cone lifting component being used to vertically lift the collapse cone (4), and the collapse cone stabilizing component being used to prevent the collapse cone (4) from tilting during the lifting process.

2. The concrete slump testing device according to claim 1, characterized in that: The area of ​​the platform plate (3) is more than three times the projected area of ​​the collapse cone.

3. The concrete slump testing device according to claim 1, characterized in that: The collapse cone stabilizing assembly includes two sliding columns (6) positioned on either side of the collapse cone (4). The sliding columns (6) are vertically fixed on the frame (1). A wing plate (5) is horizontally connected to the outer wall of the collapse cone (4). A through hole is vertically opened on the wing plate (5). The sliding column (6) is slidably connected to the through hole. A limiting platform (7) is connected to the top of the sliding column (6).

4. The concrete slump testing device according to claim 3, characterized in that: A compression spring (8) is fitted on the sliding column (6), and the two ends of the compression spring (8) are in contact with the limiting platform (7) and the wing plate (5) respectively.

5. The concrete slump testing device according to claim 1, characterized in that: The collapse cone lifting assembly includes a rack (11) vertically fixed on the collapse cone (4), the rack (11) meshing with a gear (10), the gear (10) being rotatably connected to a bracket (9), the bracket (9) being fixedly installed on the frame (1), a rocker arm (12) being connected to the rotation shaft of the gear (10), and a second limiting hole (17) being provided on both the bracket (9) and the rocker arm (12), and a second insertion rod (18) being slidably inserted into the second limiting hole (17).

6. A concrete slump testing device according to any one of claims 1 to 5, characterized in that: A collection trough (19) is provided directly below the platform plate (3).

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