Crack resistance testing device for concrete production
By designing a multi-directional pressure-pressure-resistant crack testing device, the problem of single functions of existing equipment is solved, and a comprehensive evaluation of concrete crack resistance and the extension of the equipment's service life is achieved.
Patent Information
- Application Number
- CN202421351288.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing concrete compressive performance testing equipment has relatively single functions and can only be tested in one specific direction. It is impossible to fully evaluate the crack resistance of concrete.
A crack-resistant test device for concrete production is designed, including a curved tensile structure and a split tensile structure. By adjusting the coordination between the block and the hydraulic cylinder, multi-directional pressure on the concrete is achieved, and pressure data is collected through load sensors to ensure the sealing of the test environment.
The multi-directional crack resistance performance test of concrete is achieved, which improves the comprehensiveness and accuracy of the test, extends the service life of the load sensor, and reduces the risk of equipment pollution.
Smart Images
Figure CN223139233U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete, in particular to a crack resistance testing device for concrete production. Background Technique
[0002] The crack resistance testing equipment for concrete production is a professional instrument used to evaluate the crack resistance performance of concrete under actual use conditions. Through a variety of testing methods, this equipment simulates the performance of concrete under different stress states, provides high-precision data support, and helps engineers and researchers optimize the concrete formula and construction process to improve the durability and safety of concrete structures.
[0003] For example, a compressive property testing device for concrete production with the publication number of CN216955504U, which relates to the technical field of concrete detection devices, improves the problem that the waste residue of the crushed concrete test block during extrusion is easy to splash onto the operating table and is not easy to clean. It includes a base, a workbench, a support, a placement seat, a protective housing, an adjusting screw, a hydraulic cylinder, a connecting plate, and a connecting rod. A pressing plate is fixedly installed at the lower end of the connecting rod. A protective plate is slidably connected to the surface of the connecting rod. Limiting rods are fixedly connected to the four corners of the upper surface of the protective plate. The limiting rods penetrate through the connecting plate and are slidably connected to the connecting plate. Springs are sleeved on the outer surfaces of the limiting rods. Through the settings of the protective housing, the adjusting screw, the connecting plate, the protective plate, the limiting rods, and the springs, this application can enable the concrete test block to be tested in a relatively enclosed space, and try to avoid the waste residue of the crushed concrete test block splashing everywhere during extrusion and polluting the environment.
[0004] For the compressive property testing device for concrete production in the above comparative document, its structure is generally optimized to improve the safety and pollution of the equipment. During actual operation, the testing of the compressive property of concrete is usually carried out in a closed testing environment, so the environmental impact on the human body is relatively small. During the testing process of the compressive property of concrete, it is necessary to comprehensively test the concrete in various directions and positions. However, the commonly used compressive property testing equipment for concrete currently has relatively single functions and can only test the compressive property of concrete in a specific direction. Content of the Utility Model
[0005] The purpose of the utility model is to provide a crack resistance testing device for concrete production, so as to solve the problem in the above background technique that the commonly used compressive property testing equipment for concrete currently has relatively single functions and can only test the compressive property of concrete in a specific direction.
[0006] To achieve the above object, the utility model provides the following technical solution: A crack-resistant testing device for concrete production, including a base, an adjustment groove, and an installation groove. There are two adjustment grooves, and the two adjustment grooves are symmetrically distributed inside the base, and the installation groove is located in the middle of the base interior;
[0007] The bottom of the base is provided with a mounting hole, and the mounting hole penetrates through the interior of the base, and an adjustment screw rod is threadedly connected inside the mounting hole. Inside the adjustment groove, there is a bending and stretching structure for pressing the middle of the concrete. The bending and stretching structure includes an adjustment block, and the adjustment block is slidably connected inside the adjustment groove. The bottom of the adjustment block is provided with a threaded hole, and there are two adjustment blocks, and the threaded directions of the threaded holes inside the two adjustment blocks are opposite. Both sides of the upper end of the adjustment block are fixedly connected with folding baffles, and one end of the folding baffle away from the adjustment block is fixedly connected to the inside of the adjustment groove. The top of the adjustment block is fixedly connected with two symmetrically distributed support plates, and a first force equalizing plate is slidably connected inside the two support plates. The top of the adjustment block is fixedly connected with a first load sensor, and the top of the first load sensor is fixedly connected to the bottom of the first force equalizing plate;
[0008] Inside the installation groove, there is a splitting and stretching structure for pressing the concrete in the vertical direction.
[0009] Preferably, the splitting and stretching structure includes positioning holes arranged at the four corners inside the installation groove, and a second load sensor is fixedly connected to the inner bottom of the installation groove. Inside each positioning hole, there is a positioning slide rod slidably connected, and the tops of the four positioning slide rods are fixedly connected with a second force equalizing plate.
[0010] Preferably, a spring is arranged outside the positioning slide rod, and the upper and lower ends of the spring are respectively fixedly connected to the bottom of the second force equalizing plate and the inner bottom of the installation groove, and the top of the second load sensor is fixedly connected to the bottom of the second force equalizing plate.
[0011] Preferably, the top of the base is fixedly connected with a support frame, and a hydraulic cylinder is fixedly connected inside the top end of the support frame. The bottom of the hydraulic cylinder is fixedly connected with a lower pressing plate, and both sides of the top of the lower pressing plate are fixedly connected with stabilizing rods, and the stabilizing rods are slidably connected inside the support frame.
[0012] Preferably, there are two symmetrically distributed sliding grooves at the lower end of the support frame, and a first moving block and a second moving block are respectively slidably connected inside the two sliding grooves. A positioning rod is slidably connected inside the first moving block, and the positioning rod is fixedly connected to the inside of the sliding groove.
[0013] Preferably, a fixed sleeve is fixedly connected to the inner side of the first moving block, and a driven clamp is slidably connected inside the fixed sleeve, and a spring is fixedly connected between the end of the driven clamp and the first moving block.
[0014] Preferably, a positioning sleeve is fixedly connected to the inner side of the second moving block, and an adjusting clamp is slidably connected to the inside of the positioning sleeve. A clamp lead screw is rotatably connected to the inside of the second moving block, and the clamp lead screw is threadedly connected to the inside of the adjusting clamp. Two symmetrically distributed adjusting handles are fixedly connected to the side of the second moving block away from the positioning sleeve.
[0015] Compared with the prior art, the beneficial effects of the present utility model are:
[0016] This anti-cracking test device for concrete production is provided with a bending and tensile structure. Since the internal thread directions of the two threaded holes are opposite, when the two adjusting blocks are driven by the mounting holes to move, the two adjusting blocks move in opposite directions, thereby adjusting the distance between the two adjusting blocks. Place the concrete on the tops of the two first equalizing plates, and adjust the distance between the two first equalizing plates by the movement of the two adjusting blocks to adjust the supporting area at the bottom of the concrete block;
[0017] Furthermore, when the adjusting block slides inside the adjusting groove, the adjusting block will drive the folding baffle to extend or contract between the adjusting block and the inner wall of the adjusting groove. In the moving or stationary state of the adjusting block, the folding baffle always maintains the sealed environment inside the adjusting groove to prevent concrete particles from entering the inside of the adjusting groove;
[0018] Furthermore, by starting the hydraulic cylinder to drive the lower pressing plate to move downward, the folding baffle presses on the middle of the concrete on the tops of the two first equalizing plates. At this time, both ends of the concrete will apply pressure to the tops of the two first equalizing plates. At this time, the first equalizing plates will apply pressure to the first load sensors, and the first load sensors collect the pressure generated by the first equalizing plates;
[0019] Furthermore, a splitting and tensile structure is provided. The splitting and tensile test presses on the whole concrete. Therefore, the pressure borne by the second load sensor is greater than that of the first equalizing plate. Through the setting of the positioning slide rod and the spring on its outer side, the second equalizing plate is supported to a certain extent, reducing the pressure borne by the second load sensor and extending its service life. At the same time, when calculating the magnitude of the pressure borne by the second load sensor, the pressure of the spring on the outer side of the positioning slide rod needs to be accumulated. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0021] Figure 2 is a structural schematic diagram of the base of the present utility model;
[0022] Figure 3 is a sectional structural schematic diagram of the base of the present utility model;
[0023] Figure 4Explosion structure schematic diagram of the second force equalizing plate of the present utility model;
[0024] Figure 5 Cross-sectional structure schematic diagram of the support frame of the present utility model;
[0025] Figure 6 Fixture structure schematic diagram of the present utility model.
[0026] In the figure: 1. Base; 2. Adjustment groove; 3. Installation groove; 4. Installation hole; 5. Adjustment screw rod; 6. Adjustment block; 7. Threaded hole; 8. Folding baffle; 9. Support plate; 10. First load sensor; 11. First force equalizing plate; 12. Positioning hole; 13. Second load sensor; 14. Positioning slide bar; 15. Second force equalizing plate; 16. Support frame; 17. Hydraulic cylinder; 18. Lower pressing plate; 19. Stabilizing rod; 20. Chute; 21. First moving block; 22. Fixed sleeve; 23. Driven fixture; 24. Second moving block; 25. Positioning sleeve; 26. Adjusting fixture; 27. Fixture screw rod; 28. Adjusting handle. Specific embodiments
[0027] 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 creative efforts shall fall within the protection scope of the present utility model.
[0028] In a further preferred embodiment of the present utility model, as Figure 1 - Figure 6As shown, there are two adjustment slots 2, and the two adjustment slots 2 are symmetrically distributed inside the base 1, and the installation slot 3 is located in the middle of the base 1; there are installation holes 4 at the bottom of the base 1, and the installation holes 4 penetrate through the inside of the base 1, and an adjustment screw rod 5 is threadedly connected inside the installation holes 4. There is a bending and stretching structure inside the adjustment slot 2 for pressing the middle of the concrete. The bending and stretching structure includes an adjustment block 6, and the adjustment block 6 is slidably connected inside the adjustment slot 2. There is a threaded hole 7 at the bottom of the adjustment block 6, and there are two adjustment blocks 6, and the threaded holes 7 inside the two adjustment blocks 6 have opposite thread directions. Both sides of the upper end of the adjustment block 6 are fixedly connected with folding baffles 8, and the ends of the folding baffles 8 away from the adjustment block 6 are fixedly connected inside the adjustment slot 2. The top of the adjustment block 6 is fixedly connected with two symmetrically distributed support plates 9, and a first equalizing plate 11 is slidably connected inside the two support plates 9. The top of the adjustment block 6 is fixedly connected with a first load sensor 10, and the top of the first load sensor 10 is fixedly connected with the bottom of the first equalizing plate 11; there is a splitting and stretching structure inside the installation slot 3 for pressing the concrete in the vertical direction. The splitting and stretching structure includes positioning holes 12 provided at the four corners inside the installation slot 3, and a second load sensor 13 is fixedly connected to the inner bottom of the installation slot 3. Positioning slide rods 14 are slidably connected inside the positioning holes 12, and a second equalizing plate 15 is fixedly connected to the tops of the four positioning slide rods 14. Springs are provided on the outer sides of the positioning slide rods 14, and the upper and lower ends of the springs are respectively fixedly connected to the bottom of the second equalizing plate 15 and the inner bottom of the installation slot 3, and the top of the second load sensor 13 is fixedly connected to the bottom of the second equalizing plate 15. The top of the base 1 is fixedly connected with a support frame 16, and a hydraulic cylinder 17 is fixedly connected inside the top end of the support frame 16. The bottom of the hydraulic cylinder 17 is fixedly connected with a lower pressing plate 18, and both sides of the top of the lower pressing plate 18 are fixedly connected with stabilizing rods 19, and the stabilizing rods 19 are slidably connected inside the support frame 16. There are two symmetrically distributed sliding grooves 20 at the lower end of the support frame 16, and a first moving block 21 and a second moving block 24 are respectively slidably connected inside the two sliding grooves 20. A positioning rod is slidably connected inside the first moving block 21, and the positioning rod is fixedly connected inside the sliding groove 20. A fixed sleeve 22 is fixedly connected to the inner side of the first moving block 21, and a driven clamp 23 is slidably connected inside the fixed sleeve 22, and a spring is fixedly connected between the end of the driven clamp 23 and the first moving block 21. A positioning sleeve 25 is fixedly connected to the inner side of the second moving block 24, and an adjusting clamp 26 is slidably connected inside the positioning sleeve 25. A clamp screw rod 27 is rotatably connected inside the second moving block 24, and the clamp screw rod 27 is threadedly connected to the inside of the adjusting clamp 26. Two symmetrically distributed adjusting handles 28 are fixedly connected to the side of the second moving block 24 away from the positioning sleeve 25;
[0029] By rotating and adjusting the screw rod 5 to rotate inside the base 1, the adjusting screw rod 5 rotates inside the two threaded holes 7, causing the adjusting block 6 to be linked with the mounting hole 4 through the threaded hole 7, enabling the mounting hole 4 to drive the adjusting block 6 to slide inside the adjusting groove 2. Since the thread directions inside the two threaded holes 7 are opposite, when the two adjusting blocks 6 are driven by the mounting hole 4 to move, the two adjusting blocks 6 move in opposite directions, thereby adjusting the distance between the two adjusting blocks 6. Place the concrete on top of the two first equalizing plates 11, and adjust the distance between the two first equalizing plates 11 through the movement of the two adjusting blocks 6 to adjust the supporting area at the bottom of the concrete block;
[0030] When the adjusting block 6 slides inside the adjusting groove 2, the adjusting block 6 will drive the folding baffle 8 to extend or contract between the adjusting block 6 and the inner wall of the adjusting groove 2. In the moving or stationary state of the adjusting block 6, the folding baffle 8 always maintains the sealed environment inside the adjusting groove 2 to prevent concrete particles from entering the adjusting groove 2;
[0031] By starting the hydraulic cylinder 17 to drive the lower pressing plate 18 to move downward, the folding baffle 8 presses on the middle of the concrete on top of the two first equalizing plates 11. At this time, both ends of the concrete will apply pressure to the top of the two first equalizing plates 11. At this time, the first equalizing plate 11 will apply pressure to the first load sensor 10, and collect the pressure generated by the first load sensor 10 on the first equalizing plate 11;
[0032] Place the concrete on top of the second equalizing plate 15. At this time, start the hydraulic cylinder 17 to drive the lower pressing plate 18 to move downward, so that the folding baffle 8 presses on the top of the concrete on top of the second equalizing plate 15. At this time, the top of the concrete will apply pressure to the top of the second equalizing plate 15. At this time, the second equalizing plate 15 will apply pressure to the positioning hole 12, and collect the pressure generated by the second equalizing plate 15 on the second load sensor 13. Generally, since the splitting tensile test applies pressure to the whole concrete, the pressure borne by the second load sensor 13 is greater than that of the first equalizing plate 11. Through the setting of the positioning slide rod 14 and the spring on its outer side, the second equalizing plate 15 is supported to a certain extent, reducing the pressure on the second load sensor 13 and extending its service life. At the same time, when calculating the pressure borne by the second load sensor 13, the pressure of the spring on the outer side of the positioning slide rod 14 needs to be accumulated;
[0033] The concrete is clamped by the driven clamp 23 and the adjusting clamp 26. First, place the concrete between the adjusting clamp 26 and the driven clamp 23. At this time, rotate the clamp lead screw 27, so that the clamp lead screw 27 rotates inside the second moving block 24. At the same time, the clamp lead screw 27 will rotate inside the adjusting clamp 26, thereby adjusting the position of the adjusting clamp 26 inside the positioning sleeve 25, so that the adjusting clamp 26 drives the concrete block to contact the driven clamp 23. Drive the concrete and the driven clamp 23 to slide inside the fixed sleeve 22 through the adjusting clamp 26, so that the spring inside the fixed sleeve 22 drives the driven clamp 23 to move towards the adjusting clamp 26, so that the driven clamp 23 and the adjusting clamp 26 clamp the concrete block. By adjusting the position of the adjusting clamp 26 inside the positioning sleeve 25, the horizontal position of the concrete inside the device is adjusted.
[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An anti-cracking test device for concrete production, comprising a base (1), adjustment grooves (2), and installation grooves (3). There are two adjustment grooves (2), and the two adjustment grooves (2) are symmetrically distributed inside the base (1), and the installation groove (3) is located in the middle inside the base (1). It is characterized in that: The bottom of the base (1) is provided with mounting holes (4), and the mounting holes (4) penetrate through the inside of the base (1), and an adjustment screw rod (5) is threadedly connected inside the mounting holes (4). Inside the adjustment groove (2) is a bending and stretching structure for applying pressure to the middle of the concrete. The bending and stretching structure includes an adjustment block (6), and the adjustment block (6) is slidably connected inside the adjustment groove (2). The bottom of the adjustment block (6) is provided with threaded holes (7), and there are two adjustment blocks (6), and the threaded directions of the threaded holes (7) inside the two adjustment blocks (6) are opposite. Both sides of the upper end of the adjustment block (6) are fixedly connected with folding baffles (8), and one end of the folding baffle (8) away from the adjustment block (6) is fixedly connected to the inside of the adjustment groove (2). The top of the adjustment block (6) is fixedly connected with two symmetrically distributed support plates (9), and a first equalizing plate (11) is slidably connected inside the two support plates (9). The top of the adjustment block (6) is fixedly connected with a first load sensor (10), and the top of the first load sensor (10) is fixedly connected to the bottom of the first equalizing plate (11). Inside the installation groove (3) is a splitting and stretching structure for applying pressure to the concrete in the vertical direction.
2. The anti-cracking test device for concrete production according to claim 1, wherein: The splitting and stretching structure includes positioning holes (12) arranged at the four corners inside the installation groove (3), and a second load sensor (13) is fixedly connected to the inner bottom of the installation groove (3). Positioning slide rods (14) are slidably connected inside the positioning holes (12), and the tops of the four positioning slide rods (14) are fixedly connected with a second equalizing plate (15).
3. The anti-cracking test device for concrete production according to claim 2, characterized in that: A spring is arranged on the outer side of the positioning slide rod (14), and the upper and lower ends of the spring are respectively fixedly connected to the bottom of the second equalizing plate (15) and the inner bottom of the installation groove (3), and the top of the second load sensor (13) is fixedly connected to the bottom of the second equalizing plate (15).
4. A crack resistance testing device for concrete production according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a support frame (16), and a hydraulic cylinder (17) is fixedly connected inside the top end of the support frame (16). The bottom of the hydraulic cylinder (17) is fixedly connected with a lower pressing plate (18), and both sides of the top of the lower pressing plate (18) are fixedly connected with stabilizing rods (19), and the stabilizing rods (19) are slidably connected inside the support frame (16).
5. The anti-cracking test device for concrete production according to claim 4, characterized in that: Two symmetrically distributed sliding grooves (20) are provided at the lower end of the support frame (16), and a first moving block (21) and a second moving block (24) are respectively slidably connected inside the two sliding grooves (20). A positioning rod is slidably connected inside the first moving block (21), and the positioning rod is fixedly connected to the inside of the sliding groove (20).
6. The anti-cracking test device for concrete production according to claim 5, characterized in that: A fixed sleeve (22) is fixedly connected to the inner side of the first moving block (21), and a driven clamp (23) is slidably connected inside the fixed sleeve (22), and a spring is fixedly connected between the end of the driven clamp (23) and the first moving block (21).
7. The anti-cracking test device for concrete production according to claim 6, characterized in that: A positioning sleeve (25) is fixedly connected to the inner side of the second moving block (24), and an adjusting fixture (26) is slidably connected to the inside of the positioning sleeve (25). A fixture lead screw (27) is rotatably connected to the inside of the second moving block (24), and the fixture lead screw (27) is threadedly connected to the inside of the adjusting fixture (26). Two symmetrically distributed adjusting handles (28) are fixedly connected to the side of the second moving block (24) away from the positioning sleeve (25).