Directional distribution steel fiber reinforced concrete durability test block preparation device

Abstract

The utility model discloses a directional distribution steel fiber concrete durability test block preparation device, and belongs to the technical field of concrete testing. The directional distribution steel fiber concrete durability test block preparation device comprises a supporting rack, a steel fiber storage bin, a steel fiber directional tray, a glass baffle and a durability test block mold, the steel fiber storage bin is connected with the supporting rack through a mechanical arm, and an operation panel capable of controlling the mechanical arm is arranged on the supporting rack; the steel fiber orientation tray is provided with array type steel fiber orientation units. According to the device, the distribution direction of steel fibers can be flexibly adjusted, the preparation requirements of concrete durability test blocks in different steel fiber distribution directions can be met, the distance between the steel fibers can be accurately controlled, it is guaranteed that the steel fibers are evenly distributed in the concrete test blocks, and the accuracy of test results is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete testing, in particular to a device for preparing a durability test block of steel fiber concrete with directional distribution. Background Art

[0002] Steel fiber concrete is a composite material obtained by adding steel fiber materials to ordinary concrete. Compared with traditional concrete, steel fiber concrete has the advantages of high strength and high toughness. The addition of an appropriate amount of steel fibers can effectively limit the expansion and development of microcracks inside the concrete, thereby significantly improving the crack resistance of the concrete and reducing the generation of cracks. The distribution direction of steel fibers in the concrete will directly affect its mechanical properties. When the distribution direction of steel fibers is parallel to the direction of the tensile stress, the effect of enhancing and toughening can be better achieved. In the laboratory, preparing concrete test blocks with steel fibers in different distribution directions is of great significance for further studying the durability deterioration mechanism of steel fiber concrete.

[0003] The current technology realizes the unidirectional distribution arrangement of steel fibers by applying a magnetic field around a non-metallic mold filled with steel fiber concrete after mixing. The deficiencies of the existing technology are as follows:

[0004] 1. When there are coarse aggregates around the steel fibers, the magnetic field force is not sufficient to overcome the obstruction of the coarse aggregates, and it is very difficult to achieve the expected directional effect of the steel fibers.

[0005] 2. It can only prepare concrete test blocks with steel fibers in a single distribution direction, and the distribution direction of the steel fibers in the concrete test blocks cannot be freely set.

[0006] 3. It has a high precision requirement for the magnetic field intensity, which is likely to cause uneven distribution of steel fibers and affect the test results. Content of the Utility Model

[0007] The utility model provides a device for preparing a durability test block of steel fiber concrete with directional distribution in order to solve at least one of the above technical problems existing in the prior art.

[0008] The utility model is realized by adopting the following technical scheme: A device for preparing a durability test block of steel fiber concrete with directional distribution includes a support bench, a steel fiber storage bin, a steel fiber directional tray, a glass baffle, and a durability test block mold. The steel fiber storage bin is connected to the support bench through a robotic arm. An operation panel for controlling the robotic arm is arranged on the support bench. The steel fiber directional tray is provided with an array-type steel fiber directional unit.

[0009] Preferably, the steel fiber storage bin is a box-shaped body with an open upper end surface, a discharge port reserved at the lower end surface with the same shape as the steel fiber, and a push plate is arranged inside. The push plate is connected to the right inner wall of the steel fiber storage bin through a spring.

[0010] Preferably, the array - type steel fiber orientation unit is a cylinder with grooves on its cylindrical surface, and its thickness is the same as the diameter of the steel fiber. The array - type steel fiber orientation unit is embedded on the steel fiber orientation tray through the grooves, and the array - type steel fiber orientation unit can rotate in any direction.

[0011] Preferably, the array - type steel fiber orientation unit is provided with a steel fiber channel having the same shape as the steel fiber. The steel fiber channel penetrates vertically, allowing the steel fiber to pass through freely.

[0012] Preferably, angle markings are provided on the array - type steel fiber orientation unit and the steel fiber orientation tray around it to achieve the positioning of the rotation angle of the array - type steel fiber orientation unit.

[0013] Preferably, the glass baffle is a circular tempered glass sheet with the same size as the steel fiber orientation tray. The glass baffle is closely attached to the lower part of the steel fiber orientation tray and is connected to the support bench through brackets and sleeves. The glass baffle can rotate freely around the support bench as the axis.

[0014] Preferably, the steel fiber orientation tray and the glass baffle are connected to the support bench through brackets and sleeves, and fastening bolts are installed on the sleeves to fix the vertical positions of the steel fiber orientation tray and the glass baffle on the support bench.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] This device can flexibly adjust the distribution direction of steel fibers, meet the preparation requirements of concrete durability test blocks under different steel fiber distribution directions, can accurately control the spacing of steel fibers, ensure the uniform distribution of steel fibers in the concrete test block, and ensure the accuracy of test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the overall structural schematic diagram of a device for preparing concrete durability test blocks with directionally - distributed steel fibers of the present utility model;

[0019] Figure 2 is the front view of the steel fiber storage bin in a device for preparing concrete durability test blocks with directionally - distributed steel fibers of the present utility model;

[0020] Figure 3It is the top view of the steel fiber storage bin in the device for preparing durability test blocks of directionally distributed steel fiber concrete of the present utility model;

[0021] Figure 4 It is the schematic diagram of the array-type steel fiber orientation unit in the device for preparing durability test blocks of directionally distributed steel fiber concrete of the present utility model;

[0022] In the figure: 1 - support platform; 2 - steel fiber storage bin; 3 - steel fiber orientation tray; 4 - glass baffle; 5 - durability test block mold; 6 - robotic arm; 7 - operation panel; 8 - array-type steel fiber orientation unit; 9 - discharge port; 10 - push plate; 11 - spring; 12 - groove; 13 - steel fiber channel; 14 - angle marking line; 15 - bracket; 16 - sleeve; 17 - fastening bolt. Specific embodiments

[0023] Combined with the drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0024] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should fall within the scope covered by the technical content disclosed in the present utility model. It should be noted that in this specification, relational terms such as the first and the second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0025] The present utility model provides an embodiment:

[0026] As Figure 1 shown, a device for preparing durability test blocks of directionally distributed steel fiber concrete includes a support platform 1, a steel fiber storage bin 2, a steel fiber orientation tray 3, a glass baffle 4, and a durability test block mold 5. The steel fiber storage bin 2 is connected to the support platform 1 through a robotic arm 6. An operation panel 7 for controlling the robotic arm 6 is arranged on the support platform 1. The steel fiber orientation tray 3 is provided with an array-type steel fiber orientation unit 8.

[0027] The glass baffle 4 is a circular tempered glass sheet, which is the same size as the steel fiber directional tray 3. The glass baffle 4 fits tightly under the steel fiber directional tray 3 and is connected to the support frame 1 through the bracket 15 and the sleeve 16. The glass baffle 4 can rotate freely with the support frame 1 as the axis. The steel fiber directional tray 3 and the glass baffle 4 are connected to the support frame 1 through the bracket 15 and the sleeve 16. The sleeve 16 is equipped with a fastening bolt 17 to fix the steel fiber directional tray 3 and the glass baffle 4 in the upper and lower positions of the support frame 1.

[0028] like Figure 2 , Figure 3 As shown, the steel fiber storage bin 2 is a box-shaped body with an open upper end surface and a discharge port 9 reserved on the lower end surface in the same shape as the steel fiber, and a built-in push plate 10, which is connected to the right inner wall of the steel fiber storage bin 2 through a spring 11.

[0029] like Figure 4 As shown, the array-type steel fiber orientation unit 8 is a cylinder with a groove 12 on the cylindrical surface, and the thickness is the same as the diameter of the steel fiber. The array-type steel fiber orientation unit 8 is embedded in the steel fiber orientation tray 3 through the groove 12, and the array-type steel fiber orientation unit 8 can rotate in any direction. The array-type steel fiber orientation unit 8 is provided with a steel fiber channel 13 that is consistent with the shape of the steel fiber. The steel fiber channel 13 runs through from top to bottom, allowing the steel fiber to pass freely. Angle markings 14 are provided on the array-type steel fiber orientation unit 8 and the steel fiber orientation tray 3 around it to realize the positioning of the rotation angle of the array-type steel fiber orientation unit 8.

[0030] The robot arm 6 is operated through the operation panel 7 to drive the steel fiber storage bin 2 to slide closely against the upper surface of the steel fiber orientation tray 3. When passing through the steel fiber channel 13 of the array type steel fiber orientation unit 8, the steel fiber falls into the steel fiber channel 13 through the discharge port. After the steel fiber is arranged, the array type steel fiber orientation unit 8 is rotated to the angle required for the test, and the glass baffle 4 is rotated, and the steel fiber falls into the durability test block mold 5 according to the preset distribution direction.

[0031] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A device for preparing a durability test block of directionally distributed steel fiber concrete, characterized in that: It includes a supporting frame, a steel fiber storage bin, a steel fiber orientation tray, a glass baffle, and a durability test block mold. The steel fiber storage bin is connected to the supporting frame through a mechanical arm. The supporting frame is provided with an operating panel for controlling the mechanical arm. The steel fiber orientation tray is provided with an array-type steel fiber orientation unit.

2. The preparation device for the durability test block of the oriented distribution steel fiber concrete according to claim 1, wherein: The steel fiber storage bin is a box-shaped body with an open upper end and a discharge port in the lower end which is in the same shape as the steel fiber. The push plate is built in and connected to the right inner wall of the steel fiber storage bin through a spring.

3. The preparation device for the durability test block of the directionally distributed steel fiber concrete according to claim 1, wherein: The array type steel fiber orientation unit is a cylinder with grooves arranged on the cylindrical surface, and the thickness is the same as the diameter of the steel fiber. The array type steel fiber orientation unit is embedded in the steel fiber orientation tray through the grooves, and the array type steel fiber orientation unit can rotate in any direction.

4. A device for preparing a durability test block of directionally distributed steel fiber concrete according to claim 1, characterized in that: The array type steel fiber orientation unit is provided with a steel fiber channel which is consistent with the shape of the steel fiber, and the steel fiber channel runs through from top to bottom, allowing the steel fiber to pass freely.

5. A preparation device for durability test blocks of oriented distribution steel fiber concrete according to claim 1, characterized in that: Angle markings are provided on the array-type steel fiber orientation unit and the steel fiber orientation trays around it to realize the positioning of the rotation angle of the array-type steel fiber orientation unit.

6. The preparation device for the durability test block of the oriented distribution steel fiber concrete according to claim 1, wherein: The glass baffle is a circular tempered glass sheet, which is the same size as the steel fiber directional tray. The glass baffle fits tightly under the steel fiber directional tray and is connected to the supporting frame through a bracket and a sleeve. The glass baffle can rotate freely with the supporting frame as the axis.

7. A device for preparing a durability test block of directionally distributed steel fiber concrete according to claim 1, characterized in that: The steel fiber directional tray and the glass baffle are connected to the support frame through a bracket and a sleeve, and a fastening bolt is installed on the sleeve to fix the steel fiber directional tray and the glass baffle in the upper and lower positions of the support frame.

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