Test piece box for concrete freeze thawing test
By designing the combined structure of the card joint rod and scraper in the test piece box for freeze-thaw test, and combining the tight fit design of the spring, the problem of difficulty in cleaning the test piece box is solved, and the efficient cleaning and working efficiency of the test piece box are achieved.
Patent Information
- Application Number
- CN202421529009.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-01
AI Technical Summary
In the concrete freeze-thaw test, the cleaning of the test piece box is difficult, which causes the staff to spend more time and energy and increase the labor intensity.
A test piece box for concrete freeze-thaw testing is designed, including the main body of the test piece box, the bearing plate, the connecting rod, the limiting plate, the scraper and the spring. Through the stable fixation of the joint rod and the sliding connection of the scraper, combined with the tight fit design of the spring, the effective removal of concrete residues in the test piece box is achieved.
It effectively solves the problem of concrete adhesion, reduces the labor intensity of staff, improves work efficiency, and simplifies the cleaning process of the test piece box.
Smart Images
Figure CN223005841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete equipment, in particular to a specimen box for concrete freeze-thaw test. Background Technique
[0002] In the concrete freeze-thaw test, the specimen is placed in a specimen box, and clear water is added to submerge the top surface of the specimen by 1-3 mm (or about 5 mm). The specimen box containing the specimen is placed in the specimen rack of the freeze-thaw test chamber, and the freeze-thaw cycle test is carried out according to the regulations. Each freeze-thaw cycle should be completed within 2 h-5 h, and the melting time should not be less than 1 / 4 of the total freeze-thaw time. At the end of freezing and melting, the central temperature of the specimen should be controlled at -18°C ± 2°C and 5°C ± 2°C respectively, ensuring that the time for the specimen to drop from 3°C to -16°C is not less than 1 / 2 of the total freezing time, and the time for the specimen to rise from -16°C to 3°C is also not less than 1 / 2 of the total melting time. After each freeze-thaw test, phenomena such as spalling will occur to the concrete, and the specimen box needs to be cleaned. Since the concrete has a certain viscosity, the spalling will adhere to the bottom of the specimen box, and simple cleaning or rinsing is difficult to completely remove. The staff needs to spend more time and energy to ensure that the specimen box is thoroughly cleaned, increasing the labor intensity of the staff.
[0003] Therefore, we propose a specimen box for concrete freeze-thaw test. Content of the Utility Model
[0004] The purpose of the utility model is to provide a specimen box for concrete freeze-thaw test to solve the problems proposed in the above background technique that simple cleaning or rinsing is difficult to completely remove, the staff needs to spend more time and energy to ensure that the specimen box is thoroughly cleaned, and the labor intensity of the staff is increased.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A specimen box for concrete freeze-thaw test, including a specimen box main body, a handle groove is opened inside the specimen box main body, a bearing plate is arranged inside the specimen box main body, the two sides of the bearing plate are clamped and matched with clamping rods, a limiting plate is arranged on the top of the bearing plate, the limiting plate is slidably connected with a scraping plate, a spring is arranged on the top of the scraping plate, and the bottom of the scraping plate is frictionally connected with the inner wall of the bearing plate.
[0006] Preferably, the clamping rod includes a rod sleeve, a group of sliding blocks are arranged at both ends of the rod sleeve, a spring two is arranged on one side of a group of the sliding blocks, a pressing rod is tightly pressed on the top of a group of the sliding blocks, a sliding rod is arranged in the middle of the pressing rod, and the sliding rod is slidably connected with the rod sleeve.
[0007] Preferably, a spring three is arranged on the outside of the sliding rod, one end of the spring three is tightly pressed against the rod sleeve, and the other end of the spring three is tightly pressed against the pressing rod.
[0008] Preferably, a limiting rod is arranged inside the rod sleeve, and the limiting rod is slidably connected to a set of sliding blocks.
[0009] Preferably, one end of the spring is tightly pressed against the limiting plate, and the other end of the spring is tightly pressed against the limiting plate.
[0010] Preferably, the limiting plate is provided with a sliding groove, and a scraping plate is slidably connected inside the sliding groove provided in the limiting plate.
[0011] Preferably, the main body of the test piece box is made of rubber material.
[0012] Preferably, clamping grooves are formed on both sides of the bearing plate, and a set of sliding blocks are clamped and matched inside the clamping grooves.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] In the present utility model, a handle groove is specially formed inside the main body of the test piece box for the test piece box. A bearing plate is additionally arranged inside the main body of the test piece box. The bearing plate is stably placed inside the test piece box through clamping and matching with the clamping rod on both sides. The scraping plate is slidably connected to the limiting plate arranged on the top of the bearing plate. The scraping plate is slidably connected to the limiting plate, and a spring is installed on its top, so that the scraping plate can be closely attached to the inner wall of the bearing plate and move along with the movement of the bearing plate, effectively solving the problem of concrete adhesion, reducing the labor intensity of workers, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the overall section of the present utility model;
[0016] Figure 2 is a schematic structural diagram of the disassembled clamping rod of the present utility model;
[0017] Figure 3 is a schematic structural diagram of the connection between the bearing plate and the scraping plate of the present utility model;
[0018] Figure 4 is a schematic structural diagram of the internal distribution in the main body of the test piece box of the present utility model;
[0019] In the figure: 1. Main body of the test piece box; 2. Bearing plate; 3. Clamping rod; 4. Limiting plate; 5. Scraping plate; 6. Spring; 301. Rod sleeve; 302. Sliding block; 303. Second spring; 304. Pressing rod; 305. Sliding rod; 306. Third spring; 307. Limiting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0021] Embodiment
[0022] Please refer to Figures 1-4 , a specimen box for concrete freeze-thaw test shown in the figure, which includes a specimen box main body 1. A handle groove is opened inside the specimen box main body 1. A bearing plate 2 is provided inside the specimen box main body 1. The two sides of the bearing plate 2 are clamped and matched with clamping rods 3. A limiting plate 4 is provided on the top of the bearing plate 2. The limiting plate 4 is slidably connected to a scraping plate 5. A spring 6 is provided on the top of the scraping plate 5. The bottom of the scraping plate 5 is frictionally connected to the inner wall of the bearing plate 2. In the present invention, a handle groove is specially opened inside the specimen box main body 1 of the specimen box. A bearing plate 2 is additionally provided inside the specimen box main body 1. The two sides of the bearing plate 2 are stably placed in the specimen box by being clamped and matched with the clamping rods 3. The limiting plate 4 provided on the top of the bearing plate 2 is slidably connected to the scraping plate 5. The scraping plate 5 is slidably connected to the limiting plate 4, and a spring 6 is installed on its top, so that the scraping plate 5 can closely fit the inner wall of the bearing plate 2 and move along with the movement of the bearing plate, effectively solving the problem of concrete adhesion, reducing the labor intensity of the staff, and improving the work efficiency.
[0023] Furthermore, the clamping rod 3 includes a rod sleeve 301. A set of sliding blocks 302 are provided at both ends of the rod sleeve 301. A second spring 303 is provided on one side of the set of sliding blocks 302. A pressing rod 304 is tightly pressed on the top of the set of sliding blocks 302. A sliding rod 305 is provided in the middle of the pressing rod 304. The sliding rod 305 is slidably connected to the rod sleeve 301. The clamping rod 3 is mainly based on the rod sleeve 301 as its basic structure. At both ends of the rod sleeve 301, a set of sliding blocks 302 are provided respectively. These two sets of sliding blocks 302 can slide freely on the rod sleeve 301, providing flexible adaptability for the clamping rod 3, enabling it to easily perform the clamping action on the bearing plate 2. A second spring 303 is installed on one side of each set of sliding blocks 302, facilitating automatic return to the initial position.
[0024] Further, a third spring 306 is provided outside the sliding rod 305. One end of the third spring 306 is tightly pressed against the rod sleeve 301, and the other end of the third spring 306 is tightly pressed against the pressing rod 304. By equipping the outside of the sliding rod 305 with the third spring 306, with one end of the third spring 306 tightly pressed against the rod sleeve 301 and the other end tightly pressed against the pressing rod 304, due to the elastic action of the spring, it can tightly press the pressing rod 304 against the sliding block 302, ensuring that the clamping rod 3 will not loosen or shift during use. At the same time, when the staff releases the downward pressing action on the pressing rod 304, the pressing rod 304 automatically returns to its initial position to separate the clamping rod from the bearing plate.
[0025] Further, a limiting rod 307 is provided inside the rod sleeve 301. The limiting rod 307 is slidably connected to a set of sliding blocks 302. By adding the limiting rod 307 inside the rod sleeve 301, the limiting rod 307 is slidably connected to a set of sliding blocks 302, allowing the sliding blocks 302 to move freely on the limiting rod 307, but at the same time being restricted by the limiting rod to ensure that its moving range is within the predetermined range.
[0026] Further, one end of a spring 6 is tightly pressed against the limiting plate 4, and the other end of the spring 6 is tightly pressed against the limiting plate 4. By tightly pressing both ends of the spring 6 against the limiting plate 4 and the other end tightly pressing against the scraping plate 5, the introduction of the spring 6 provides a continuous and stable pressure for the scraping plate 5. Due to the elastic characteristics of the spring, it can continuously push the scraping plate 5 towards the inner wall of the bearing plate 2, ensuring that the scraping plate is always in close contact with the bearing plate, guaranteeing that the scraping plate can effectively scrape off the concrete residues attached to the bearing plate, thereby keeping the specimen box clean.
[0027] Further, a sliding groove is provided on the limiting plate 4, and the scraping plate 5 is slidably connected inside the sliding groove provided on the limiting plate 4. The sliding groove provided on the limiting plate 4 provides a stable and precise sliding track for the scraping plate 5, ensuring that the scraping plate 5 can always maintain a stable path during movement, avoiding deviation or misalignment, and guaranteeing that the scraping plate can evenly and effectively clean the surface of the bearing plate 2. Since the scraping plate is slidably connected inside the sliding groove, the user can easily push the scraping plate to achieve its smooth movement. This design simplifies the cleaning process, reduces the labor intensity of the staff, and improves work efficiency.
[0028] In this solution, the work process is as follows: The main body 1 of the specimen box serves as the support framework of the entire structure, and the bearing plate 2 provided inside it is used to directly bear the concrete specimen; the bearing plate 2 is firmly fixed inside the main body 1 of the specimen box through the clamping rods 3 on both sides, ensuring the stability of the specimen during the test.
[0029] Under the action of the second spring 303, the sliding block 302 in the rod sleeve 301 of the clamping rod 3 can adaptively adjust its position to closely fit the clamping groove of the bearing plate 2, ensuring the firmness of the clamping and making the installation and disassembly of the bearing plate simple and fast.
[0030] The limiting plate 4 is installed on the top of the bearing plate 2. Its function is to limit the position of the concrete specimen and is connected to the scraping plate 5 through the sliding groove. The scraping plate 5 is closely attached to the inner wall of the bearing plate 2 under the action of the spring 6. When cleaning is required, simply move the scraping plate 5 to easily scrape off the concrete residues attached to the bearing plate.
[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.
[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A specimen box for concrete freeze-thaw test, characterized in that: The invention comprises a test box body (1), wherein a handle groove is provided inside the test box body (1), a carrying plate (2) is provided inside the test box body (1), two sides of the carrying plate (2) are engaged with engaging rods (3), a limiting plate (4) is provided on the top of the carrying plate (2), the limiting plate (4) is slidably connected to a scraper (5), a spring (6) is provided on the top of the scraper (5), and the bottom of the scraper (5) is frictionally connected to the inner wall of the carrying plate (2).
2. A specimen box for concrete freeze-thaw test according to claim 1, characterized in that: The clamping rod (3) comprises a rod sleeve (301), a group of sliding blocks (302) are provided at both ends of the rod sleeve (301), a spring (303) is provided on one side of a group of sliding blocks (302), a pressure rod (304) is tightly pressed on the top of a group of sliding blocks (302), a sliding rod (305) is provided in the middle of the pressure rod (304), and the sliding rod (305) is slidably connected to the rod sleeve (301).
3. A specimen box for concrete freeze-thaw test according to claim 2, characterized in that: A spring three (306) is arranged outside the sliding rod (305), one end of the spring three (306) is tightly pressed into the rod sleeve (301), and the other end of the spring three (306) is tightly pressed into the pressure rod (304).
4. A specimen box for concrete freeze-thaw test according to claim 2, characterized in that: A limiting rod (307) is provided inside the rod sleeve (301), and the limiting rod (307) is slidably connected to a group of sliding blocks (302).
5. A specimen box for concrete freeze-thaw test according to claim 4, characterized in that: One end of the spring (6) is tightly pressed against the limit plate (4), and the other end of the spring (6) is tightly pressed against the limit plate (4).
6. A specimen box for concrete freeze-thaw test according to claim 5, characterized in that: The limiting plate (4) is provided with a sliding groove, and the limiting plate (4) is provided with a scraper (5) which is slidably connected inside the sliding groove.
7. A specimen box for concrete freeze-thaw test according to claim 1, characterized in that: The test piece box body (1) is made of rubber material.
8. A specimen box for concrete freeze-thaw test according to claim 1, characterized in that: The carrier plate (2) is provided with snap-fitting grooves on both sides, and a group of sliding blocks (302) are snap-fitted inside the snap-fitting grooves.