Rapid freezing and thawing testing machine for concrete

Abstract

The utility model relates to the technical field of concrete testing, in particular to a concrete quick freezing and thawing testing machine which comprises a concrete freezing and thawing testing machine body, an operation panel is fixedly installed on the right side of the front surface of the concrete freezing and thawing testing machine body, and a cover plate is movably installed on the rear side of the top of the concrete freezing and thawing testing machine body. A test cavity is formed in the left side of the top of the concrete freezing and thawing tester body, a bearing and mounting assembly is mounted in an inner cavity of the test cavity in a penetrating manner and comprises a storage sleeve, and a supporting rod is slidably mounted in an inner cavity of the storage sleeve. By arranging the bearing mounting assembly, the cleaning device has the advantage of being convenient to operate, a plurality of test piece boxes can be pushed to move upwards at the same time in cooperation with the supporting block and the bearing frame under elastic supporting of the storage sleeve, and after the test piece boxes are separated from anti-freezing liquid, the driving motor is controlled to work to drive the cleaning frame to move up and down; the residual anti-freezing solution on the surface of the test piece box is scraped and cleaned, and the whole operation is rapid and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete testing, in particular to a rapid freeze-thaw testing machine for concrete. Background Technique

[0002] A rapid freeze-thaw testing machine for concrete is a test device specifically used to evaluate the frost resistance of concrete. By simulating the conditions of freeze-thaw cycles in the natural environment, rapid freeze-thaw tests are carried out on concrete samples to measure their performance changes after repeated freeze-thaw cycles, so as to evaluate the durability of concrete.

[0003] After retrieval, the publication number is CN218382488U, and the name is a rapid freeze-thaw testing machine for concrete, including a test chamber and a controller. Through research and analysis, it is found that although it is convenient for experimental personnel to take out the specimen box, to a certain extent, there are still the following disadvantages.

[0004] For example, in this device, a screw drive method is adopted, and the operator manually moves the carrier upwards. Still, the operator needs to contact the device components, which poses a risk of contamination by antifreeze. At the same time, the natural dripping method is used, and gravity is used to avoid the drainage of antifreeze from the carrier. The overall working efficiency is average, and it is not possible to conveniently move multiple carriers upwards as a whole, which has certain limitations. To solve the above technical problems, we have designed a rapid freeze-thaw testing machine for concrete. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rapid freeze-thaw testing machine for concrete, which has the advantage of convenient operation, and solves the problems that in this device, the operator still needs to contact the device components, posing a risk of contamination by antifreeze, and at the same time, using gravity to avoid the drainage of antifreeze from the carrier, the overall working efficiency is average, and it is not possible to conveniently move multiple carriers upwards as a whole, which has certain limitations.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A rapid freeze-thaw testing machine for concrete, including the main body of the concrete freeze-thaw testing machine, an operation panel is fixedly installed on the right side of the front surface of the main body of the concrete freeze-thaw testing machine, a cover plate is movably installed at the rear side of the top of the main body of the concrete freeze-thaw testing machine, a test chamber is opened on the left side of the top of the main body of the concrete freeze-thaw testing machine, a bearing and installation component is installed through the inner cavity of the test chamber, the bearing and installation component includes a storage sleeve, a support rod is slidably installed in the inner cavity of the storage sleeve, a carrier is slidably sleeved on the top surface of the support rod, a specimen box is installed through the top of the carrier, a driving motor is bolted at the center of the top of the carrier, the output end of the driving motor is fixedly connected with a screw rod, and a cleaning frame is threadedly sleeved at the bottom of the screw rod surface.

[0007] Preferably, the number of the storage sleeves is four. A fixing block is fixedly sleeved on the outer ring of the storage sleeve, and the surface of the fixing block is fixedly connected to the inner wall of the test chamber.

[0008] Preferably, a spring is fixedly connected to the bottom of the inner cavity of the storage sleeve, and the top of the spring is fixedly connected to the bottom of the support rod.

[0009] Preferably, a supporting block is fixedly sleeved on the top of the surface of the support rod. The bottom of the supporting bracket contacts the top of the supporting block, and positioning holes for cooperating with the support rod are respectively formed through four corners of the supporting bracket.

[0010] Preferably, a convex frame is fixedly sleeved on the surface of the test piece box and located at the top of the supporting bracket, and a clamping groove is formed on the surface of the convex frame.

[0011] Preferably, positioning blocks are fixedly connected to both the left and right sides of the top of the supporting bracket. A clamping block is movably sleeved on the surface of the positioning block through a damping bearing, and the clamping block is adapted to the clamping groove.

[0012] Preferably, the cleaning frame is adapted to the test piece box. A guiding rod is fixedly connected to the bottom of the supporting bracket, and the bottom of the guiding rod penetrates through the cleaning frame and is in sliding contact with the cleaning frame.

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

[0014] By setting the bearing and mounting assembly, the present utility model has the advantage of convenient operation. Under the elastic support of the storage sleeve, the supporting block and the supporting bracket can cooperate to simultaneously push multiple test piece boxes upward. After the test piece boxes are separated from the antifreeze, the driving motor is controlled to work to drive the cleaning frame to move up and down, so as to scrape and clean the residual antifreeze on the surface of the test piece boxes. The overall operation is rapid and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the structure of the present utility model;

[0016] Figure 2 is a three-dimensional diagram when the partial structure of the present utility model is separated;

[0017] Figure 3 is a three-dimensional diagram when the supporting bracket and the test piece box of the present utility model are separated.

[0018] In the figure: 1. Concrete freeze-thaw testing machine body; 2. Operation panel; 3. Cover plate; 4. Bearing and installation assembly; 401. Bracket; 402. Positioning hole; 403. Receiving sleeve; 404. Spring; 405. Support rod; 406. Fixed block; 407. Support block; 408. Specimen box; 409. Clamping block; 410. Positioning block; 411. Guide rod; 412. Screw rod; 413. Driving motor; 414. Cleaning frame; 415. Card slot; 416. Convex frame; 5. Test chamber. Detailed implementation manner

[0019] Please refer to Figures 1 - 3 , a rapid concrete freeze-thaw testing machine, including a concrete freeze-thaw testing machine body 1. A control panel 2 is fixedly installed on the right side of the front surface of the concrete freeze-thaw testing machine body 1. A cover plate 3 is movably installed at the rear side of the top of the concrete freeze-thaw testing machine body 1. A test chamber 5 is opened on the left side of the top of the concrete freeze-thaw testing machine body 1. A bearing and installation assembly 4 is installed through the inner cavity of the test chamber 5. The bearing and installation assembly 4 includes a receiving sleeve 403. By providing the receiving sleeve 403 and the support rod 405, it can play a role in positioning and guiding, and can ensure the stability of the up and down movement of the bracket 401. A support rod 405 is slidably installed in the inner cavity of the receiving sleeve 403. By providing the positioning hole 402 and the support rod 405, it can play a role in positioning and installation, and facilitate the quick and accurate placement of the bracket 401. A bracket 401 is slidably sleeved on the top surface of the support rod 405. By providing the bracket 401, it can meet the requirement of the placement and bearing space for multiple specimen boxes 408. A specimen box 408 is installed through the top of the bracket 401. A driving motor 413 is bolted at the center of the top of the bracket 401. The output end of the driving motor 413 is fixedly connected to a screw rod 412. A cleaning frame 414 is threadedly sleeved at the bottom surface of the screw rod 412. By providing the screw rod 412 and the cleaning frame 414, under the drive of the driving motor 413, the screw rod 412 can rotate to adjust the height of the cleaning frame 414;

[0020] Please refer to Figure 2 and Figure 3 , the number of the receiving sleeves 403 is four. A fixed block 406 is fixedly sleeved on the outer ring of the receiving sleeve 403. By providing the fixed block 406, it can be connected to the inner wall of the test chamber 5, thereby meeting the requirement for the fixed installation of the receiving sleeve 403. The surface of the fixed block 406 is fixedly connected to the inner wall of the test chamber 5;

[0021] Please refer to Figure 2 and Figure 3 , a spring 404 is fixedly connected to the bottom of the inner cavity of the receiving sleeve 403. The top of the spring 404 is fixedly connected to the bottom of the support rod 405. By providing the spring 404, it can elastically support the support rod 405, and avoid the random downward movement of the support rod 405 without external force;

[0022] Please refer to Figure 2 and Figure 3 A support block 407 is fixedly sleeved on the top of the surface of the support rod 405. By providing the support block 407, the support bracket 401 can be supported to prevent the support bracket 401 from moving downward randomly. The bottom of the support bracket 401 contacts the top of the support block 407, and positioning holes 402 adapted to the support rod 405 are respectively formed through the four corners of the support bracket 401;

[0023] Please refer to Figure 2 and Figure 3 A convex frame 416 is fixedly sleeved on the surface of the test piece box 408 and located at the top of the support bracket 401, and a clamping groove 415 is formed on the surface of the convex frame 416;

[0024] Please refer to Figure 2 and Figure 3 Positioning blocks 410 are fixedly connected to the left and right sides of the top of the support bracket 401. A clamping block 409 is movably sleeved on the surface of the positioning block 410 through a damping bearing. The clamping block 409 is adapted to the clamping groove 415. By providing the clamping block 409, the positioning block 410 and the clamping groove 415, when the clamping block 409 is placed in the clamping groove 415, a limiting and clamping function can be achieved to prevent the convex frame 416 and the test piece box 408 from moving upward randomly;

[0025] Please refer to Figure 2 and Figure 3 The cleaning frame 414 is adapted to the test piece box 408. A guiding rod 411 is fixedly connected to the bottom of the support bracket 401. By providing the guiding rod 411, the up and down displacement of the cleaning frame 414 can be guided to ensure the movement stability of the cleaning frame 414. The bottom of the guiding rod 411 penetrates through the cleaning frame 414 and is in sliding contact with the cleaning frame 414;

[0026] A rubber wiper strip is fixedly embedded in the inner cavity of the cleaning frame 414, which is used to wipe and clean the surface of the test piece box 408 when the cleaning frame 414 moves downward, and the rubber material can prevent the cleaning frame 414 from being damaged due to hard contact with the test piece box 408;

[0027] In actual application, in order to ensure the service life of the driving motor 413, a protective shell is assembled on the top of the support bracket 401 and located outside the driving motor 413.

[0028] In use, all components are in the initial state. First, place the test specimen in the specimen box 408, and lower the specimen box 408 to place it on the support bracket 401. Rotate the clamping block 409 into the card slot 415 to ensure the placement stability of the specimen box 408. Then, sleuth the support bracket 401 carrying four specimen boxes 408 onto the support rod 405 and contact the support block 407. Close the cover plate 3, and the specimen box 408 can be lowered into the test chamber 5. The spring 404 is compressed. After the experiment is completed, when the cover plate 3 is opened, under the elastic support of the spring 404, the support rod 405 moves upward and resets, which will cooperate with the support block 407 to lift the support bracket 401 upward. The specimen box 408 then disengages from the coolant in the test chamber 5. Then, control the driving motor 413 to work, drive the screw rod 412 to rotate, and under the screw drive, the cleaning frame 414 moves up and down on the surface of the specimen box 408 to achieve the function of mechanical scraping and cleaning, without manual operation being contaminated by the antifreeze, and the overall operation is rapid and convenient, more in line with the actual use requirements.

[0029] In summary, for this rapid freeze-thaw testing machine for concrete, by setting the load-bearing and installation component 4, the problem that the operators still need to contact the equipment components in the equipment, which poses a hidden danger of being contaminated by the antifreeze, is solved. At the same time, the load-bearing member is prevented from draining the antifreeze by gravity, the overall working efficiency is average, and it is not possible to conveniently lift multiple load-bearing members as a whole, which has certain limitations.

Claims

1. A concrete rapid freeze-thaw test machine, comprising a concrete freeze-thaw test machine body (1), characterized in that: An operation panel (2) is fixedly installed on the right side of the front surface of the concrete freeze-thaw test machine body (1); a cover plate (3) is movably installed on the rear side of the top of the concrete freeze-thaw test machine body (1); a test chamber (5) is opened on the left side of the top of the concrete freeze-thaw test machine body (1); a bearing installation component (4) is installed through the inner cavity of the test chamber (5); the bearing installation component (4) comprises a storage sleeve (403); a support rod (405) is slidably installed in the inner cavity of the storage sleeve (403); a support bracket (401) is provided on the top sliding sleeve of the surface of the support rod (405); a specimen box (408) is installed through the top of the support bracket (401); a driving motor (413) is bolted at the center of the top of the supporting bracket (401); a screw rod (412) is fixedly connected to the output end of the driving motor (413); a cleaning frame (414) is provided on the bottom threaded sleeve of the surface of the screw rod (412).

2. A concrete rapid freeze-thaw testing machine according to claim 1, characterized in that: The number of the storage sleeves (403) is four, and the outer ring fixing sleeve of the storage sleeve (403) is provided with a fixing block (406), and the surface of the fixing block (406) is fixedly connected to the inner wall of the test cavity (5).

3. A concrete rapid freeze-thaw testing machine according to claim 1, characterized in that: A spring (404) is fixedly connected to the bottom of the inner cavity of the storage sleeve (403), and the top of the spring (404) is fixedly connected to the bottom of the support rod (405).

4. A concrete rapid freeze-thaw testing machine according to claim 1, characterized in that: A support block (407) is fixedly sleeved on the top of the surface of the support rod (405), the bottom of the support bracket (401) contacts the top of the support block (407), and positioning holes (402) for use with the support rod (405) are penetrated through the four corners of the support bracket (401).

5. A concrete rapid freeze-thaw testing machine according to claim 1, characterized in that: A convex frame (416) is fixedly provided on the surface of the test piece box (408) and located on the top of the support frame (401), and a card slot (415) is provided on the surface of the convex frame (416).

6. A concrete rapid freeze-thaw testing machine according to claim 5, characterized in that: Positioning blocks (410) are fixedly connected to the left and right sides of the top of the support frame (401), and a clamping block (409) is provided on the surface of the positioning block (410) through a damping bearing movable sleeve, and the clamping block (409) is adapted to the clamping groove (415).

7. A concrete rapid freeze-thaw testing machine according to claim 1, characterized in that: The cleaning frame (414) is adapted to the specimen box (408), and a guide rod (411) is fixedly connected to the bottom of the support frame (401), and the bottom of the guide rod (411) passes through the cleaning frame (414) and is in sliding contact with the cleaning frame (414).

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