Concrete temperature stress testing machine

Abstract

The utility model discloses a concrete temperature stress testing machine which comprises a working table, a fixing frame is arranged on the working table, a storage barrel is arranged on the bottom side of the working table, one side of the storage barrel is connected with a conveying pipe, one end of the conveying pipe penetrates through the working table to be communicated with a lower die, a sealing bag is arranged in the lower die, and the sealing bag is connected with the storage barrel. The sealing bag is used for sealing concrete slurry, a conveying pump is arranged on the conveying pipe, a lower mold and an upper mold are arranged on the workbench and the fixing frame respectively, an opening is formed in the bottom of the lower mold, and a demolding assembly is arranged at the bottom of the lower mold. The demolding assembly comprises a first push plate and a second push plate which are inserted into the opening of the lower mold, the second push plate is located on the inner side of the first push plate, the bottom of the workbench is fixedly connected with a second hydraulic cylinder and a third hydraulic cylinder, and one end of the second hydraulic cylinder and one end of the third hydraulic cylinder are connected with the first push plate and the second push plate correspondingly. The device can improve the demolding efficiency and shorten the demolding time while ensuring the test efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete temperature stress tests, in particular to a concrete temperature stress testing machine. Background Technique

[0002] Concrete temperature stress refers to the stress generated inside the concrete due to temperature changes; during the construction process, the concrete temperature stress often causes temperature cracks, thereby affecting the overall structural integrity and durability; a concrete temperature stress testing machine is a physical property testing instrument used in the fields of mechanics, basic disciplines of engineering and technical sciences, water conservancy projects, and transportation engineering.

[0003] During the use of a concrete temperature stress testing machine, concrete slurry needs to be added into the mold, and after the concrete slurry solidification test is completed, it takes a certain amount of time for demolding. The existing manual demolding method has low efficiency, so improvement is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a concrete temperature stress testing machine to solve the problem of low demolding efficiency of the concrete temperature stress testing machine proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A concrete temperature stress testing machine, including a workbench, a fixed frame is arranged on the workbench, a lower mold and an upper mold are respectively arranged on the workbench and the fixed frame, an opening is formed at the bottom of the lower mold, and a demolding assembly is arranged at the bottom of the lower mold;

[0006] The demolding assembly includes a first push plate and a second push plate inserted into the opening of the lower mold. The second push plate is located inside the first push plate. A second hydraulic cylinder and a third hydraulic cylinder are fixedly connected to the bottom of the workbench. One ends of the second hydraulic cylinder and the third hydraulic cylinder are respectively connected to the first push plate and the second push plate.

[0007] Preferably, a storage bucket is arranged on the bottom side of the workbench, and a delivery pipe is connected to one side of the storage bucket.

[0008] Preferably, one end of the delivery pipe penetrates through the workbench and is communicated with the lower mold, and a delivery pump is arranged on the delivery pipe.

[0009] Preferably, a sealing bag is arranged inside the lower mold, and the sealing bag is used to seal the concrete slurry.

[0010] Preferably, grooves are formed on the inner walls on both sides of the lower mold, and a pressure plate is arranged inside the grooves. The inner side of the pressure plate is on the same horizontal line as the inner wall of the lower mold.

[0011] Preferably, a pressure hydraulic cylinder is fixedly connected to the top side of the workbench, and one side of the pressure hydraulic cylinder is connected to one side of the pressure plate.

[0012] Preferably, a first hydraulic cylinder is fixedly connected to the top of the fixing frame, and one end of the first hydraulic cylinder is connected to the top of the upper mold.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) While ensuring the test efficiency, this device can improve the demoulding efficiency and shorten the demoulding time.

[0015] (2) This device is provided with a first push plate and a second push plate that can freely lift at the bottom of the lower mold. When the first push plate and the second push plate are combined, they can seal the bottom of the lower mold to ensure the normal progress of the test work. After the first push plate descends, it can be separated from the concrete test block, and at the same time, the concrete test block can be dragged out of the lower mold through the second push plate, thereby improving the demoulding efficiency.

[0016] (3) This device is connected with a delivery pipe and a storage barrel at the bottom of the lower mold. By adding a certain amount of demoulding agent into the lower mold, the demoulding difficulty can be reduced and the demoulding efficiency can be improved. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a concrete temperature stress testing machine of the present utility model;

[0018] Figure 2 It is a sectional view of a concrete temperature stress testing machine of the present utility model;

[0019] Figure 3 It is a top view of the connection between the first push plate and the second push plate of a concrete temperature stress testing machine of the present utility model.

[0020] In the figure: 1, first hydraulic cylinder; 2, upper mold; 3, fixing frame; 4, lower mold; 5, workbench; 6, demoulding assembly; 61, second hydraulic cylinder; 62, third hydraulic cylinder; 63, storage barrel; 64, delivery pump; 65, delivery pipe; 66, first push plate; 67, second push plate; 7, pressurizing hydraulic cylinder; 8, sealing bag; 9, pressurizing plate. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. 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 embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-3, the utility model provides a technical solution: a concrete temperature stress testing machine, which includes a workbench 5. A fixing frame 3 is arranged on the workbench 5. A storage barrel 63 is arranged on the bottom side of the workbench 5. One side of the storage barrel 63 is connected with a delivery pipe 65; one end of the delivery pipe 65 penetrates through the workbench 5 and communicates with the lower mold 4. A delivery pump 64 is arranged on the delivery pipe 65; the storage barrel 63 of this structure is used to store the release agent. Adding the release agent into the lower mold 4 before adding the concrete slurry is beneficial to the subsequent demolding work; the top side of the workbench 5 is fixedly connected with a pressurizing hydraulic cylinder 7. One side of the pressurizing hydraulic cylinder 7 is connected with one side of a pressure plate 9; the pressurizing hydraulic cylinder 7 of this structure can push the pressure plate 9 to pressurize the concrete test block, which is convenient for adjusting the pressure according to requirements; a lower mold 4 and an upper mold 2 are respectively arranged on the workbench 5 and the fixing frame 3. A sealing bag 8 is arranged inside the lower mold 4, and the sealing bag 8 is used to seal the concrete slurry; grooves are opened on the inner walls on both sides of the lower mold 4, and a pressure plate 9 is arranged inside the grooves. The inner side of the pressure plate 9 is on the same horizontal line as the inner wall of the lower mold 4; the top of the fixing frame 3 is fixedly connected with a first hydraulic cylinder 1. One end of the first hydraulic cylinder 1 is connected with the top of the upper mold 2; a refrigerating mechanism and a heating mechanism are arranged on the upper mold 2 of this structure. The refrigerating mechanism is located on the left side of the upper mold 2, such as a compression refrigeration structure. The heating mechanism is located in the middle position of the upper mold 2, such as a heating pipe, as shown in the attached Figure 2 In the attached drawings, the two vertical rods in the middle of the upper mold 2 shown are displacement sensors, which can timely sense the changes of concrete stress and displacement; an opening is opened at the bottom of the lower mold 4, and a demolding assembly 6 is arranged at the bottom of the lower mold 4;

[0023] The demolding assembly 6 includes a first push plate 66 and a second push plate 67 inserted into the opening of the lower mold 4. The second push plate 67 is located inside the first push plate 66. The bottom of the workbench 5 is fixedly connected with a second hydraulic cylinder 61 and a third hydraulic cylinder 62. One ends of the second hydraulic cylinder 61 and the third hydraulic cylinder 62 are respectively connected with the first push plate 66 and the second push plate 67.

[0024] Working principle: When using this concrete temperature stress testing machine, first start the delivery pump 64 to add the release agent into the lower mold 4. Then use tools to spread the release agent evenly. Next, lay the sealing bag 8 inside the lower mold 4 and then add the concrete slurry into the lower mold 4 and vibrate it evenly. After the concrete slurry solidifies, close the upper mold 2 to start the test work. After the test is completed, open the upper mold 2. Then the second hydraulic cylinder 61 drives the first push plate 66 to descend, and the third hydraulic cylinder 62 drives the second push plate 67 to push the concrete test block to demold from the inside of the lower mold 4.

[0025] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A concrete temperature stress testing machine, comprising a workbench (5), and a fixing frame (3) is arranged on the workbench (5), characterized in that: The workbench (5) and the fixing frame (3) are respectively provided with a lower mold (4) and an upper mold (2). An opening is formed at the bottom of the lower mold (4), and a demolding assembly (6) is arranged at the bottom of the lower mold (4). The demolding assembly (6) includes a first push plate (66) and a second push plate (67) inserted inside the opening of the lower mold (4). The second push plate (67) is located inside the first push plate (66). A second hydraulic cylinder (61) and a third hydraulic cylinder (62) are fixedly connected to the bottom of the workbench (5). One ends of the second hydraulic cylinder (61) and the third hydraulic cylinder (62) are respectively connected to the first push plate (66) and the second push plate (67).

2. The concrete temperature stress testing machine according to claim 1, characterized in that: A storage barrel (63) is arranged on the bottom side of the workbench (5), and a delivery pipe (65) is connected to one side of the storage barrel (63).

3. The concrete temperature stress testing machine according to claim 2, characterized in that: One end of the delivery pipe (65) penetrates through the workbench (5) and communicates with the lower mold (4), and a delivery pump (64) is arranged on the delivery pipe (65).

4. A concrete temperature stress testing machine according to claim 1, characterized in that: A sealing bag (8) is arranged inside the lower mold (4), and the sealing bag (8) is used for sealing the concrete slurry.

5. A concrete temperature stress testing machine according to claim 1, characterized in that: Grooves are formed on the inner walls on both sides of the lower mold (4), and a pressing plate (9) is arranged inside the grooves. The inner side of the pressing plate (9) is on the same horizontal line as the inner wall of the lower mold (4).

6. The concrete temperature stress testing machine according to claim 1, wherein: A pressing hydraulic cylinder (7) is fixedly connected to the top side of the workbench (5), and one side of the pressing hydraulic cylinder (7) is connected to one side of the pressing plate (9).

7. A concrete temperature stress testing machine according to claim 1, characterized in that: A first hydraulic cylinder (1) is fixedly connected to the top of the fixing frame (3), and one end of the first hydraulic cylinder (1) is connected to the top of the upper mold (2).

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