Special crack resistance testing device for high-molecular dense composite material

Abstract

The utility model provides a special anti-crack testing device for polymer dense composite material, which comprises a bottom plate, rib plates and a square frame, the square frame is arranged on the bottom plate, the rib plates are arranged on the bottom plate and located inside the square frame, the plurality of rib plates are arranged along the length direction of the square frame, the square frame comprises a first support plate and a second support plate, and the first support plate and the second support plate are arranged on the bottom plate. A fixing plate is fixedly connected to the side, back to the rib plate, of the first supporting plate, the two ends of the second supporting plate extend to be provided with fixing parts, the fixing parts are fixedly connected with the fixing plate through fixing bolts, and the purpose of conveniently separating the square frame from concrete is achieved.

Description

Technical Field

[0001] This utility model relates to the field of concrete, and in particular, to a special crack resistance testing device for polymer dense composite materials. Background Technology

[0002] To improve the performance of concrete, polymeric densifiers are typically added. Specialized testing equipment is required to test the crack resistance of concrete mixed with polymeric densifiers.

[0003] like Figure 1 As shown, the existing crack resistance testing device mainly includes ribs 2, a base plate 1, and an integrally formed square frame 5. The square frame 5 is placed on the base plate 1, and then the ribs 2 are placed on the base plate 1 and located within the square frame 5. After air is blown onto the concrete, the concrete solidifies and shrinks, generating stress at the ribs 2, thus causing cracks in the concrete. The crack resistance of the concrete is evaluated by measuring the area of ​​the cracks. Multiple ribs 2 are provided and arranged along the length of the square frame 5.

[0004] After the test is completed, the square frame along with the concrete is lifted from the base plate, and then the concrete is repeatedly struck with a hammer to separate the square frame from the concrete, which is quite inconvenient. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a special crack resistance testing device for polymer dense composite materials, so as to facilitate the separation of the square frame from the concrete.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a special crack resistance testing device for polymer dense composite materials, including a base plate, ribs and a square frame. The square frame is placed on the base plate, and the ribs are placed on the base plate and located inside the square frame. Multiple ribs are arranged along the length of the square frame. The square frame includes a first support plate and a second support plate. A fixing plate is fixedly connected to the side of the first support plate opposite to the ribs. The two ends of the second support plate extend with fixing parts, and the fixing parts are fixedly connected to the fixing plate by fixing bolts.

[0007] To achieve the above technical solution, the fixing part and the fixing plate are connected by fixing bolts, so that the two first support plates and the two second support plates are spliced ​​into a square frame. The square frame is placed on the base plate, the rib plate is placed inside the square frame, and the concrete is placed inside the square frame. After the concrete solidifies and shrinks, cracks are formed on the concrete through the rib plate. After measuring the area of ​​the cracks, the square frame is removed from the base plate, and then the fixing bolts are removed, so that the first support plate and the second support plate can be separated smoothly from the concrete. The operation is simple.

[0008] In a preferred embodiment of this utility model, a vertical plate is fixedly connected to the side of the first support plate opposite to the rib plate, the end of the vertical plate abuts against the bottom plate, and the length direction of the vertical plate is parallel to the width direction of the first support plate.

[0009] To achieve the above technical solution, the setting of the upright plate makes the first support plate more stable when placed on the base plate, and the first support plate is less likely to tip over when concrete is poured into the square frame.

[0010] In a preferred embodiment of this utility model, an extension plate is connected to the side of the second support plate opposite to the rib plate, the side wall of the extension plate abuts against the bottom plate, and the length direction of the extension plate is parallel to the length direction of the second support plate.

[0011] The above technical solution enables the second support plate to be placed more stably on the base plate.

[0012] In a preferred embodiment of this utility model, a reinforcing plate is fixedly connected between the extension plate and the second support plate.

[0013] The above technical solution improves the structural strength of the second support plate, making it less prone to deformation when concrete is poured into the square frame.

[0014] As a preferred embodiment of this utility model, a lifting rod is fixedly connected to the side of the second support plate opposite to the rib plate.

[0015] To achieve the above technical solution, the lifting rod is used to lift the square frame off the base plate.

[0016] In a preferred embodiment of this utility model, the first support plate is connected to the end of the rib plate by a locking bolt.

[0017] The above technical solution ensures that the ribs do not easily move within the square frame when concrete is poured into it.

[0018] As a preferred embodiment of this utility model, a support wheel is provided on the side of the base plate opposite to the rib plate.

[0019] The above technical solution is implemented to facilitate the movement of the base plate, so that the concrete can be moved to a cool place to solidify.

[0020] In a preferred embodiment of the present invention, the rib includes a placement part and a fracture part, the fracture part is fixed on the placement part, the placement part is placed on the base plate, and the cross-section of the fracture part is triangular.

[0021] The above technical solution makes the rib plate more stable when placed on the base plate. Attached Figure Description

[0022] Figure 1 A schematic diagram of an existing crack resistance testing device;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram showing the end face of the rib.

[0025] Reference numerals: 1. Base plate; 2. Rib plate; 3. Placement part; 4. Fracture part; 5. Square frame; 6. First support plate; 7. Second support plate; 8. Fixing plate; 9. Fixing part; 10. Fixing bolt; 11. Locking bolt; 12. Vertical plate; 13. Extension plate; 14. Reinforcing plate; 15. Lifting rod; 16. Support wheel. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 2 and attached Figure 3 The specific embodiments of this utility model will be further described in detail to make the technical solution of this utility model easier to understand and master.

[0027] A crack resistance testing device for dense polymer composites includes a base plate 1, ribs 2, and a square frame 5. The square frame 5 is placed on the base plate 1, and the ribs 2 are placed on the base plate 1 and located inside the square frame 5, supported by the base plate 1. Multiple ribs 2 are arranged parallel to each other along the length of the square frame 5. The length direction of the ribs 2 is parallel to the width direction of the square frame 5. The distance between any two adjacent ribs 2 is equal.

[0028] Rib 2 includes a placement part 3 and a fracture part 4. The fracture part 4 is fixed above the placement part 3, and the placement part 3 is placed on the base plate 1. The cross-section of the fracture part 4 is triangular. The cross-section of the placement part 3 is rectangular.

[0029] The square frame 5 includes a first support plate 6 and a second support plate 7, with the length of the first support plate 6 being greater than the length of the second support plate 7. There are two of each type of support plate. A fixing plate 8 is fixedly connected to the side of the first support plate 6 opposite to the rib plate 2, and the fixing plate 8 is located at the end of the first support plate 6. A fixing part 9 extends from the end of the second support plate 7, fitting snugly against the fixing plate 8, and is fixedly connected to the fixing part 9 and the fixing plate 8 by a fixing bolt 10.

[0030] To ensure the rib plate 2 is placed stably within the square frame 5, the first support plate 6 is connected to the end of the rib plate 2 via locking bolts 11. Both ends of the rib plate 2 are in contact with the first support plate 6.

[0031] A vertical plate 12 is fixedly connected to the side of the first support plate 6 opposite to the rib plate 2. The lower end of the vertical plate 12 abuts against the bottom plate 1, and the length direction of the vertical plate 12 is parallel to the width direction of the first support plate 6. Two vertical plates 12 are connected to each first support plate 6.

[0032] An extension plate 13 is fixedly connected to the side of the second support plate 7 opposite to the rib plate 2. The side wall of the extension plate 13 abuts against the bottom plate 1, and the length direction of the extension plate 13 is parallel to the length direction of the second support plate 7.

[0033] A reinforcing plate 14 is fixedly connected between the extension plate 13 and the second support plate 7. The reinforcing plate 14 is a cuboid.

[0034] A lifting rod 15 is fixedly connected to the side of the second support plate 7 opposite to the rib plate 2. The lifting rod 15 is cylindrical, and two lifting rods 15 are connected to each second support plate 7.

[0035] A support wheel 16 is rotatably connected to the side of the base plate 1 facing away from the rib plate 2, and the four support wheels 16 are located at the four corners of the base plate 1 respectively.

[0036] Of course, the above are just typical examples of this utility model. In addition, this utility model can have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A special crack resistance testing device for polymer dense composite materials, comprising a base plate (1), ribs (2) and a square frame (5), wherein the square frame (5) is placed on the base plate (1), the ribs (2) are placed on the base plate (1) and located inside the square frame (5), and a plurality of the ribs (2) are arranged along the length direction of the square frame (5), characterized in that: The square frame (5) includes a first support plate (6) and a second support plate (7). The first support plate (6) has a fixed plate (8) fixedly connected to the side facing away from the rib plate (2). The two ends of the second support plate (7) have fixed parts (9). The fixed parts (9) and the fixed plate (8) are fixedly connected by fixing bolts (10).

2. The crack resistance testing device for high-polymer dense composite materials according to claim 1, characterized in that: The first support plate (6) is fixedly connected to a vertical plate (12) on the side opposite to the rib plate (2). The end of the vertical plate (12) abuts against the bottom plate (1). The length direction of the vertical plate (12) is parallel to the width direction of the first support plate (6).

3. The crack resistance testing device for high-polymer dense composite materials according to claim 1, characterized in that: An extension plate (13) is connected to the side of the second support plate (7) opposite to the rib plate (2). The side wall of the extension plate (13) abuts against the bottom plate (1). The length direction of the extension plate (13) is parallel to the length direction of the second support plate (7).

4. The crack resistance testing device for polymer dense composites according to claim 3, characterized in that: A reinforcing plate (14) is fixedly connected between the extension plate (13) and the second support plate (7).

5. The crack resistance testing device for high-polymer dense composite materials according to claim 1, characterized in that: The second support plate (7) is fixedly connected to a lifting rod (15) on the side opposite to the rib plate (2).

6. The crack resistance testing device for high-polymer dense composite materials according to claim 1, characterized in that: The first support plate (6) is connected to the end of the rib plate (2) by a locking bolt (11).

7. The crack resistance testing device for high-polymer dense composite materials according to claim 1, characterized in that: The bottom plate (1) is provided with a support wheel (16) on the side opposite to the rib plate (2).

8. The crack resistance testing device for high-polymer dense composite materials according to claim 1, characterized in that: The rib (2) includes a placement part (3) and a fracture part (4). The fracture part (4) is fixed on the placement part (3). The placement part (3) is placed on the base plate (1). The cross section of the fracture part (4) is triangular.

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