Concrete freezing and thawing circulator

Abstract

The utility model relates to the technical field of freezing and thawing machines, in particular to a concrete freezing and thawing circulating machine which comprises a freezing and thawing machine body and a sealing top cover, a test piece barrel is arranged in a freezing and thawing operation cavity, and the test piece barrel is inserted in a limiting frame fixedly installed on the inner wall of the freezing and thawing operation cavity in a sliding mode. A folding pressing assembly for pressing and sealing the test piece barrel is mounted on the inner wall of the freezing and thawing operation cavity, a soft supporting frame is fixedly mounted in the test piece barrel, a hard supporting frame is slidably inserted between the soft supporting frame and the test piece barrel, and the hard supporting frame is fixedly connected with the test piece barrel through a positioning insertion and extraction assembly; according to the frost heaving test piece barrel, when frost heaving happens to a test piece, the friction force between the test piece and the soft supporting frame can be reduced, the test piece can be taken out conveniently, meanwhile, the stability of the test piece barrel can be improved, scattering of the test piece caused by shaking of the test piece barrel in the using process is avoided, and floating of the test piece barrel can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze-thaw machines, in particular to a concrete freeze-thaw cycle machine. Background Art

[0002] The concrete freeze-thaw cycle machine is a device used to simulate the behavior of concrete under freeze-thaw cycle conditions. It is essential for studying and evaluating the durability and performance of concrete in cold climate conditions. The concrete freeze-thaw cycle machine is an indispensable tool for concrete research and engineering applications, and is of great significance for improving the durability and performance of concrete.

[0003] However, when using the existing concrete freeze-thaw cycle machine, the concrete sample needs to be placed in a specimen barrel. The shaking of the specimen barrel during the experiment can easily cause the sample to spill. At the same time, when using a separate specimen barrel for the experiment, the specimen barrels of other holes are likely to float in the cycler, affecting the use effect and the accuracy of the experiment. At the same time, when the sample freezes and swells, the friction between the sample and the specimen barrel increases, causing inconvenience in taking out the sample, and there are certain disadvantages in the use process.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a concrete freeze-thaw cycle machine in order to solve the above-mentioned problem. The utility model has the advantages of improving the stability of the specimen barrel and avoiding the spilling of the specimen caused by the shaking of the specimen barrel during use. At the same time, when the specimen freezes and swells, the friction between the specimen and the soft supporting frame can be reduced, thereby facilitating the removal of the specimen.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme. A concrete freeze-thaw cycle machine includes a freeze-thaw machine body and a sealing top cover. A freeze-thaw operation cavity is opened on the freeze-thaw machine body. The sealing top cover is rotatably installed on the freeze-thaw machine body for sealing the freeze-thaw operation cavity. A specimen barrel is arranged in the freeze-thaw operation cavity. The specimen barrel is slidably inserted in the limiting frame fixedly installed on the inner wall of the freeze-thaw operation cavity. The foldable pressing down assembly for pressing down and sealing the specimen barrel is installed on the inner wall of the freeze-thaw operation cavity. The soft supporting frame is fixedly installed in the specimen barrel. The hard supporting frame is slidably inserted between the soft supporting frame and the specimen barrel, and the hard supporting frame is fixedly connected to the specimen barrel through the positioning plug-in assembly.

[0007] Furthermore, in order to enable the lifting slider to slide up and down in the vertical limiting groove through the limiting slide rod, the folding downward pressing assembly includes the vertical mounting block, the vertical mounting block is provided with a vertical limiting groove, the limiting slide rod is fixedly installed in the vertical limiting groove, the lifting slider is slidably sleeved on the limiting slide rod, and the lifting slider is slidably clamped in the vertical limiting groove.

[0008] Furthermore, in order to enable the lifting slider to reset in the vertical limiting groove through the second lifting spring, the lifting slider is elastically connected to the inner wall of the bottom end of the vertical limiting groove through the second lifting spring.

[0009] Furthermore, in order to enable the adjustable connecting seat to move up and down through the connecting head and the serpentine connecting rod, the serpentine connecting rod is fixedly installed on the lifting slider, the connecting head is fixedly installed on one end of the serpentine connecting rod, and the adjustable connecting seat is rotatably installed on the connecting head.

[0010] Furthermore, in order to be able to rotate and adjust the folding lower pressure plate through the adjusting connecting seat, the folding lower pressure plate is fixedly installed on the adjusting connecting seat, and the soft sealing plug is fixedly installed on the inner wall of the folding lower pressure plate. The soft sealing plug is clamped in the specimen barrel for sealing the specimen barrel.

[0011] Furthermore, in order to fix the L-shaped mounting block on the rigid support frame by means of the positioning pin rod, the positioning plug-in assembly includes the L-shaped mounting block, the L-shaped mounting block is fixed to the top of the rigid support frame by the bolt, one end of the L-shaped mounting block is slidably plugged with the positioning pin rod, and one end of the positioning pin rod is plugged into the positioning pin hole opened on the rigid support frame.

[0012] Furthermore, in order to enable the positioning pin rod to slide on the L-shaped mounting block by controlling the plug-in and pull-out head, the plug-in and pull-out head is fixedly mounted on the other end of the positioning pin rod.

[0013] The technical effects and advantages of the utility model are as follows: the specimen barrel can be sealed and pressed tightly in the freeze-thaw machine body through the foldable pressing component, thereby improving the stability of the specimen barrel and preventing the specimen from being scattered due to the shaking of the specimen barrel during use. At the same time, it can prevent the unused specimen barrel from floating up when the specimen barrel is used alone. At the same time, the hard supporting frame can be fixed between the soft supporting frame and the specimen barrel through the positioning plug-in component. When the specimen is frozen and heaved, the hard supporting frame can be taken out, so that the soft supporting frame is slightly deformed to relieve the frozen heaving stress, reduce the friction between the specimen and the soft supporting frame, and facilitate the removal of the specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the freeze-thaw machine body of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation structure of the foldable pressing assembly of the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the foldable pressing assembly of the utility model;

[0018] Figure 5 This is a schematic diagram of the installation structure of the rigid support frame of the utility model;

[0019] Figure 6 This is a structural schematic diagram of the positioning plug-in assembly of the utility model;

[0020] In the figure: 1. Freezer-thaw machine body; 2. Sealing top cover; 3. Test piece barrel; 4. Limiting frame; 5. Folding downward pressure assembly; 501. Vertical mounting block; 502. Limiting slide bar; 503. Lifting slide bar; 504. Second lifting spring; 505. Serpentine connecting rod; 506. Connecting head; 507. Adjusting connecting seat; 508. Folding downward pressure plate; 509. Soft sealing plug; 6. Soft supporting frame; 7. Hard supporting frame; 8. Positioning plug-in assembly; 801. L-shaped mounting block; 802. Bolt; 803. Positioning pin rod; 804. Plug-in and pull-out pulling head. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 6As shown, the concrete freeze-thaw cycle machine comprises a freeze-thaw machine body 1 and a sealing top cover 2. The freeze-thaw machine body 1 is provided with a freeze-thaw operation cavity. The sealing top cover 2 is rotatably mounted on the freeze-thaw machine body 1 for sealing the freeze-thaw operation cavity. A specimen barrel 3 is arranged in the freeze-thaw operation cavity. The specimen barrel 3 is slidably inserted in a limiting frame 4 fixedly mounted on the inner wall of the freeze-thaw operation cavity, so as to limit the specimen barrel 3 and prevent the specimen barrel 3 from shaking during use. A foldable pressing component 5 for pressing down and sealing the specimen barrel 3 is installed on the inner wall of the freeze-thaw operation cavity, so as to press the specimen barrel 3 downward, improve the stability of the specimen barrel 3, and realize the sealing of the specimen barrel 3, so as to prevent the shaking of the specimen barrel 3 from causing the specimen barrel 3 to shake. In order to prevent the sample from being scattered, a soft supporting frame 6 is fixedly installed in the specimen barrel 3, and a hard supporting frame 7 is slidably inserted between the soft supporting frame 6 and the specimen barrel 3, and the hard supporting frame 7 is fixedly connected to the specimen barrel 3 through a positioning plug-in assembly 8. When in use, the hard supporting frame 7 is fixed between the specimen barrel 3 and the soft supporting frame 6 through the positioning plug-in assembly. When the sample is put into the freeze-thaw experiment, the hard supporting frame 7 limits the soft supporting frame 6. When the sample is frozen and heaved, the hard supporting frame 7 can be taken out from the specimen barrel 3, so that the soft supporting frame 6 is slightly deformed to relieve the frozen heaving stress of the sample, thereby reducing the friction between the sample and the soft supporting frame 6, so as to facilitate the removal of the sample.

[0023] The foldable pressing assembly 5 includes a vertical mounting block 501, on which a vertical limiting groove is provided, in which a limiting slide bar 502 is fixedly installed, on which a lifting slider 503 is slidably sleeved, and the lifting slider 503 is slidably clamped in the vertical limiting groove, and the lifting slider 503 is elastically connected to the inner wall of the bottom end of the vertical limiting groove through a second lifting spring 504, and a serpentine connecting rod 505 is fixedly installed on the lifting slider 503, and a connecting head 506 is fixedly installed at one end of the serpentine connecting rod 505, and an adjusting connecting seat 507 is rotatably installed on the connecting head 506, and a folding pressing plate 508 is fixedly installed on the adjusting connecting seat 507, and the inner wall of the folding pressing plate 508 is fixedly installed. A soft sealing plug 509 is fixedly installed on the wall. The soft sealing plug 509 is clamped in the specimen barrel 3 to seal the specimen barrel 3. The folding lower pressure plate 508 is controlled to rotate on the connecting head 506 through the adjusting seat so that the folding lower pressure plate 508 remains horizontal. When the sealing top cover 2 is closed, the folding lower pressure plate 508 is pressed downward so that the soft sealing plug 509 is inserted into the specimen barrel 3. While sealing the specimen barrel 3, the specimen barrel 3 can be pressed and positioned to avoid the shaking of the specimen barrel 3 and the spillage of the sample. At the same time, when the specimen barrel 3 is used alone, the unused specimen barrel 3 can be limited to avoid the floating of the specimen barrel 3, and the stability during use is higher.

[0024] The positioning and plug-in assembly 8 includes an L-shaped mounting block 801, which is fixed to the top of the rigid support frame 7 by bolts 802. A positioning pin rod 803 is slidably inserted at one end of the L-shaped mounting block 801. One end of the positioning pin rod 803 is inserted into a positioning pin hole provided on the rigid support frame 7. A plug-in and pull-out head 804 is fixedly installed at the other end of the positioning pin rod 803. When in use, the positioning pin rod 803 is inserted into the positioning pin hole so as to fix the rigid support frame 7 and the specimen barrel 3. At the same time, the plug-in and pull-out head 804 is controlled so that the positioning pin rod 803 slides on the L-shaped mounting block 801, so that one end of the positioning pin rod 803 is disengaged from the positioning pin hole, so as to remove the rigid support frame 7 from between the soft support frame 6 and the specimen barrel 3.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A concrete freeze-thaw cycle machine, comprising a freeze-thaw machine body (1) and a sealing top cover (2), wherein the freeze-thaw machine body (1) is provided with a freeze-thaw operation cavity, and the sealing top cover (2) is rotatably mounted on the freeze-thaw machine body (1) for sealing the freeze-thaw operation cavity, characterized in that: A specimen barrel (3) is provided in the freeze-thaw operation chamber, and the specimen barrel (3) is slidably inserted into a limiting frame (4) fixedly installed on the inner wall of the freeze-thaw operation chamber. A foldable pressing assembly (5) for pressing down and sealing the specimen barrel (3) is installed on the inner wall of the freeze-thaw operation chamber. A soft supporting frame (6) is fixedly installed in the specimen barrel (3), and a hard supporting frame (7) is slidably inserted between the soft supporting frame (6) and the specimen barrel (3), and the hard supporting frame (7) is fixedly connected to the specimen barrel (3) via a positioning plug-in assembly (8).

2. The concrete freeze-thaw cycle machine according to claim 1, characterized in that: The foldable pressing assembly (5) comprises a vertical mounting block (501), a vertical limiting groove is formed on the vertical mounting block (501), a limiting slide bar (502) is fixedly installed in the vertical limiting groove, a lifting slide bar (503) is slidably sleeved on the limiting slide bar (502), and the lifting slide bar (503) is slidably engaged in the vertical limiting groove.

3. The concrete freeze-thaw cycle machine according to claim 2, characterized in that: The lifting slide block (503) is elastically connected to the inner wall of the bottom end of the vertical limiting groove via a second lifting spring (504).

4. The concrete freeze-thaw cycle machine according to claim 3, characterized in that: A serpentine connecting rod (505) is fixedly mounted on the lifting slider (503), a connecting head (506) is fixedly mounted on one end of the serpentine connecting rod (505), and an adjusting connecting seat (507) is rotatably mounted on the connecting head (506).

5. The concrete freeze-thaw cycle machine according to claim 4, characterized in that: A folding lower pressing plate (508) is fixedly mounted on the adjusting connecting seat (507), and a soft sealing plug (509) is fixedly mounted on the inner wall of the folding lower pressing plate (508). The soft sealing plug (509) is clamped in the specimen barrel (3) for sealing the specimen barrel (3).

6. The concrete freeze-thaw cycle machine according to claim 1, characterized in that: The positioning plug-in assembly (8) comprises an L-shaped mounting block (801), the L-shaped mounting block (801) being fixed to the top of the rigid support frame (7) by means of bolts (802), a positioning pin rod (803) being slidably plugged into one end of the L-shaped mounting block (801), and one end of the positioning pin rod (803) being plugged into a positioning pin hole provided on the rigid support frame (7).

7. The concrete freeze-thaw cycle machine according to claim 6, characterized in that: The other end of the positioning pin rod (803) is fixedly mounted with an insertion and extraction pulling head (804).

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