Anti-freezing detection device for building materials

Abstract

The utility model discloses a building material anti-freezing detection device which comprises a heat preservation box body and a control mechanism, a compression refrigerator is arranged on one side of the heat preservation box body, a box door is arranged on the other side of the heat preservation box body, the two sides of the box door are connected with the two sides of the heat preservation box body in a sliding mode, and a lifting mechanism is arranged between the box door and the heat preservation box body. Guide rails are symmetrically fixed to the bottom of the heat preservation box body, an objective table is arranged in the heat preservation box body, connecting shafts are symmetrically arranged at the bottom of the objective table, directional wheels are fixed to shaft bodies at the two ends of the symmetrically-arranged connecting shafts, the directional wheels are installed in the guide rails, and installation bases are arranged on the outer sides of the directional wheels. According to the device, indexes such as the freeze-thaw strength and the freeze-thaw coefficient of the stone can be calculated by observing the sample quality change in the freeze-thaw process of a test piece, so that the anti-freezing performance of the stone is evaluated, the overall design automation degree is high, and the experiment convenience and efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and in particular relates to a building material antifreeze detection device. Background Art

[0002] As a common building material, stone is widely used in many fields such as construction, decoration, and gardening. However, with climate change, the frost resistance problem faced by stone in cold areas has become increasingly prominent. In cold areas, if the stone has poor frost resistance, it is easy to crack and peel off during the freezing and thawing cycle, which seriously affects the structural safety and service life of the building. Through the stone frost resistance test, stones with excellent frost resistance can be screened out. Therefore, stone frost resistance testing is particularly important.

[0003] The stone frost resistance test is a process of professionally evaluating the performance changes of stone during the alternating freezing and thawing process. The fundamental principle is to simulate the freezing and thawing cycle that stone undergoes in the natural environment, observe and record the changes in its physical and chemical properties during this process, and thus make a judgment on its frost resistance. However, the current standard operating method relies on manual placement of the test piece in the refrigerator and then taking it out. This process needs to be repeated at least 30 times, which is cumbersome and inefficient. In view of this, the utility model proposes a building material frost resistance detection device, which aims to realize the repeated freezing and thawing process of stone test pieces through automated control, which not only improves the convenience of the experiment, but also significantly improves the detection efficiency.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a building material antifreeze detection device, comprising an insulation box and a control mechanism, a compression refrigerator is arranged on one side of the insulation box, a box door is arranged on the other side of the insulation box, the two sides of the box door are slidingly connected to the two sides of the insulation box, a lifting mechanism is arranged between the box door and the insulation box, guide rails are symmetrically fixed to the bottom of the insulation box, a loading platform is arranged inside the insulation box, connecting shafts are symmetrically arranged at the bottom of the loading platform, and directional wheels are fixed to the shaft bodies at both ends of the symmetrically arranged connecting shafts, the directional wheels are installed inside the guide rails, and a mounting seat is arranged on the outer side of the directional wheel, the mounting seat and the connecting shaft are rotatably connected, the mounting seat is fixed to the bottom end face of the loading platform, and a first driving motor is installed at one end of one of the connecting shafts.

[0006] As a preferred technical solution of the utility model, the control mechanism includes a first drive motor and a timing controller, the first drive motor is installed at one end of one of the connecting shafts, and the first drive motor body is fixed on a corresponding mounting seat.

[0007] As a preferred technical solution of the utility model, the lifting mechanism includes a second drive motor and a rack, the second drive motor body is fixed on the insulation box body, a gear is fixed to the output end of the second drive motor, the rack is fixed on the box door, the rack and the gear are meshingly connected, and the second drive motor is electrically connected to the timing controller.

[0008] As a preferred technical solution of the utility model, a clearance groove is arranged at the guide rail corresponding to the box door, and the width of the clearance groove is adapted to the thickness of the box door.

[0009] As a preferred technical solution of the utility model, support feet are arranged at the bottom of the thermal insulation box body, and the bottom end surface of the support feet is flush with the guide rail.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model uses a compression refrigerator to achieve rapid refrigeration, meeting the requirements of antifreeze experiments for building materials. The control mechanism precisely controls the entry and exit of the stage in the insulation box to achieve repeated freezing and thawing of the stone specimen. By observing the changes in sample mass during the freezing and thawing process of the specimen, indicators such as the freeze-thaw strength and freeze-thaw coefficient of the stone can be calculated, thereby evaluating its antifreeze performance. The overall design has a high degree of automation, which improves the convenience and efficiency of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of the heat preservation box of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model in which the loading platform is moved out of the heat preservation box;

[0014] In the figure: 1. Insulated box body; 2. Compression refrigerator; 3. Box door; 4. Guide rail; 5. Loading platform; 6. Connecting shaft; 7. Steering wheel; 8. Mounting seat; 9. First drive motor; 10. Timing controller; 11. Second drive motor; 12. Rack; 13. Gear; 14. Make way slot; 15. Support foot. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example

[0017] See also Figure 1-2 The utility model provides the following technical solutions: a building material antifreeze detection device, including an insulation box 1 and a control mechanism. The insulation box 1 has excellent insulation performance, can effectively prevent the internal temperature from being lost, and ensure the stability of the experimental environment. On one side of the insulation box 1, a compression refrigerator 2 is installed, and the compression refrigerator 2 can quickly cool to meet the needs of the building material antifreeze experiment; the other side of the insulation box 1 is provided with a door 3, and the door 3 is connected to the insulation box 1 by a sliding connection. Between the door 3 and the insulation box 1, a lifting mechanism is installed, which can accurately control the up and down movement of the door 3 to realize the convenient opening and closing of the door 3. In addition, a symmetrical guide rail 4 is fixed to the bottom of the insulation box 1, and the guide rail 4 not only enhances the stability of the stage 5 when moving out of or into the insulation box 1, but also provides a precise path for the movement of the stage 5. A stage 5 is installed inside the insulation box 1, and the stage 5 is used to carry the stone specimen to be tested. Symmetrical connecting shafts 6 are provided at the bottom of the loading platform 5, and directional wheels 7 are fixed at both ends of these connecting shafts 6. These directional wheels 7 are installed inside the guide rails 4, so that the loading platform 5 can maintain a stable direction during the movement. A mounting seat 8 is provided on the outside of the directional wheels 7, and a flexible rotation connection is achieved between the mounting seat 8 and the connecting shaft 6. At the same time, the mounting seat 8 is also fixed to the bottom end surface of the loading platform 5 to ensure the stability of the loading platform 5 when it is moved out of the heat preservation box 1.

[0018] In order to automatically control the entry and exit of the loading platform 5, in this embodiment, as a preferred technical solution of the utility model, the control mechanism includes a first drive motor 9 and a timing controller 10, the first drive motor 9 is installed at one end of one of the connecting shafts 6, and the body of the first drive motor 9 is fixed on the corresponding mounting seat 8.

[0019] In order to facilitate the automatic opening and closing of the box door 3, in this embodiment, as a preferred technical solution of the utility model, the lifting mechanism includes a second drive motor 11 and a rack 12, the second drive motor 11 body is fixed on the insulation box body 1, a gear 13 is fixed to the output end of the second drive motor 11, the rack 12 is fixed on the box door 3, the rack 12 and the gear 13 are meshed and connected, and the second drive motor 11 and the timing controller 10 are electrically connected.

[0020] In order to ensure the sealing of the heat preservation box body 1, in this embodiment, as a preferred technical solution of the utility model, a clearance groove 14 is provided at the guide rail 4 corresponding to the box door 3, and the width of the clearance groove 14 is adapted to the thickness of the box door 3.

[0021] In order to support the whole, in this embodiment, as a preferred technical solution of the utility model, a support foot 15 is provided at the bottom of the insulation box body 1, and the bottom end surface of the support foot 15 is flush with the guide rail 4.

[0022] To sum up, with the help of the above technical scheme of the utility model, when using, the stone specimen is immersed in water, and quickly and freely cured at room temperature for three days to allow the specimen to fully absorb water. The pre-cured specimen is placed in the insulation box 1, and refrigeration is started by the compression refrigerator 2. The specimen is frozen and kept in the insulation box 1 for two hours. The timing is performed by the timing controller 10. After the set time is reached, the timing controller 10 controls the output of the first drive motor 9 and the second drive motor 11. The output of the first drive motor 9 drives the connecting shaft 6 to rotate, and then drives the directional wheel 7 on the connecting shaft 6 to rotate and move outward along the guide rail 4. At the same time, the output of the second drive motor 11 drives the gear 13 to rotate, and with the help of the rack 12, the 3 on the box door is driven, so that the stage 5 drives the specimen to move out to the outside for dissolution. In this cycle, the quality change of the specimen is observed under a certain number of freeze-thaw cycles, and indicators such as the freeze-thaw strength and freeze-thaw coefficient of the stone can be calculated.

[0023] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0024] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A building material antifreeze detection device, comprising a heat-insulating box (1) and a control mechanism, characterized in that: A compression refrigerator (2) is arranged on one side of the heat preservation box (1), and a box door (3) is arranged on the other side of the heat preservation box (1). The two sides of the box door (3) are slidably connected to the two sides of the heat preservation box (1). A lifting mechanism is arranged between the box door (3) and the heat preservation box (1). A guide rail (4) is symmetrically fixed at the bottom of the heat preservation box (1). A loading platform (5) is arranged inside the heat preservation box (1). A connecting shaft (6) is symmetrically arranged at the bottom of the loading platform (5). Both ends of the symmetrically arranged connecting shaft (6) are fixed with directional wheels (7). The directional wheels (7) are installed inside the guide rail (4). A mounting seat (8) is arranged outside the directional wheel (7). The mounting seat (8) is rotatably connected to the connecting shaft (6). The mounting seat (8) is fixed to the bottom end surface of the loading platform (5), and a first drive motor (9) is installed at one end of one of the connecting shafts (6).

2. A building material antifreeze detection device according to claim 1, characterized in that: The control mechanism comprises a first drive motor (9) and a timing controller (10); the first drive motor (9) is mounted on one end of one of the connecting shafts (6); and the body of the first drive motor (9) is fixed on a corresponding mounting seat (8).

3. A building material antifreeze detection device according to claim 2, characterized in that: The lifting mechanism comprises a second drive motor (11) and a rack (12); the body of the second drive motor (11) is fixed on the heat preservation box body (1); a gear (13) is fixed on the output end of the second drive motor (11); the rack (12) is fixed on the box door (3); the rack (12) and the gear (13) are meshed and connected; and the second drive motor (11) is electrically connected to a timing controller (10).

4. A building material antifreeze detection device according to claim 1, characterized in that: The guide rail (4) is provided with a clearance groove (14) at a position corresponding to the box door (3), and the width of the clearance groove (14) is adapted to the thickness of the box door (3).

5. A building material antifreeze detection device according to claim 1, characterized in that: The bottom of the heat-insulating box body (1) is provided with a supporting foot (15), and the bottom end surface of the supporting foot (15) is flush with the guide rail (4).

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