A tensile and compressive strength testing device for concrete members
By linking the limiting frame and auxiliary components, the center alignment and height adjustment of the concrete block are achieved, which solves the problems of cumbersome concrete block replacement and poor adaptability in the existing device, and improves the stability and adaptability of the detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN LUHONG EXPERIMENTAL TESTING TECH DEV CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-19
AI Technical Summary
Existing concrete component tensile and compressive strength testing devices are cumbersome to use when changing concrete blocks, and it is difficult to achieve centered alignment and clamping, resulting in poor testing stability and adaptability.
A tensile and compressive strength testing device for concrete components was designed. Through the linkage of a limiting frame, a sliding plate, a connecting rod, a rotating rod, and a cylinder, the center alignment and clamping of the concrete block is achieved. The height of the clamping plate can be adjusted by threaded blocks and screws to accommodate concrete blocks of different thicknesses.
It improves the stability and adaptability of the testing process, ensures that the lower and upper shims are centered on the concrete block, expands the clamping surface, adapts to concrete blocks of different thicknesses, and enhances the practicality and flexibility of the testing.
Smart Images
Figure CN224382992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete component technology, specifically to a device for testing the tensile and compressive strength of concrete components. Background Technology
[0002] When testing the tensile strength of concrete components, the splitting fracture test is often used. A cube or cylindrical specimen is used, and a shim is placed between the upper and lower support surfaces of the specimen and the pressure plate of the press. This creates a corresponding strip loading on the upper and lower surfaces of the specimen, causing splitting failure along the center of the cube or the diameter of the cylinder. The axial tensile strength of the concrete can be obtained by converting the force value at the time of splitting.
[0003] A bitumen concrete splitting crack test fixture, disclosed in announcement number CN214668175U, includes: a mounting frame, a limiting plate, a first pad, a second pad, a clamping mechanism, a fixing plate, and a rubber sleeve. Four vertical columns are vertically arranged on the bottom wall of the mounting frame. The second pad is fixed at the center of the bottom wall of the mounting frame. Limiting holes adapted to the columns are provided on the limiting plate. The first pad is fixedly installed at the lower end of the limiting plate. The axes of the first and second pads are parallel. The first and second pads have arc-shaped surfaces and are positioned opposite each other. This invention effectively avoids inaccurate test results due to human error. Furthermore, by setting up the clamping mechanism, on the one hand... The clamping mechanism can be adjusted horizontally or vertically to easily adjust the test position of the concrete block. Furthermore, clamping the concrete block during the experiment prevents flying fragments from injuring people during the concrete splitting test. However, the aforementioned asphalt concrete splitting test fixture is cumbersome to use when changing concrete blocks, making it difficult to center-align the shims with the concrete block. This makes it inconvenient to center-clamp and limit concrete blocks of different heights, resulting in poor practicality and flexibility of the overall device. Therefore, it is necessary to provide a new tensile and compressive strength testing device for concrete components to solve the above technical problems. Summary of the Invention
[0004] The purpose of this invention is to provide a tensile and compressive strength testing device for concrete components, which has the advantages of easy adjustment and centering alignment to improve adaptability, and solves the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile and compressive strength testing device for concrete components, comprising: an operating table, the top of which is fixedly connected to a fixed frame and four limiting plates; the top of the fixed frame is fixedly connected to a limiting frame, and the limiting frame contains a lower pad, an upper pad, and a pressing plate; an auxiliary component, comprising two sliding plates, which are slidably connected to the interior of two limiting plates on both sides; a clamping plate is fixedly connected to the top of each sliding plate; a connecting rod is rotatably connected to the exterior of each limiting plate; a rotating rod is rotatably connected to the exterior of each connecting rod; an adjusting plate is slidably connected to the interior of each clamping plate; a threaded block is fixedly connected to the bottom of the adjusting plate; a screw is rotatably connected to the interior of the threaded block; and a cylinder is fixedly connected to the exterior of the right sliding plate. When the concrete block is placed inside the limiting frame, the lower and upper shims can be confined within the limiting frame by sliding engagement, and simultaneously positioned in the center of the limiting frame. Simultaneously, the cylinder operates, pulling one side of the sliding plate. Through the linkage of two connecting rods and a rotating rod, the two sliding plates can move synchronously towards or away from each other, ultimately allowing the two clamping plates to simultaneously clamp and limit the concrete block, further ensuring the concrete block is centered within the limiting frame. This ensures that both the lower and upper shims are centered on the concrete block, improving stability during the testing process. During the clamping and limiting of the concrete block, rotating the screw allows the threaded block to move up and down along the external thread of the screw, ultimately adjusting the height of the adjusting plate. This further expands the clamping surface of both clamping plates, improving adaptability for clamping concrete blocks of different thicknesses.
[0006] Preferably, the two connecting rods are respectively pivotally connected to the two sliding plates and the two ends of the rotating rod. The cylinder is fixedly connected to the top of the operating table. The cylinder pushes the sliding plate, and through the linkage of the two connecting rods and the rotating rod, the two clamping plates can move closer to each other synchronously to clamp the concrete block.
[0007] Preferably, the bottom of the operating table is fixedly connected to four base columns, and the bottom of each of the four base columns is fixedly connected to a rubber pad, so that the base columns can provide stable support for the entire device.
[0008] Preferably, each of the two sliding plates has two sliders fixedly connected to its bottom, and each of the four limiting plates has a limiting groove inside, with the sliders being engaged inside the limiting groove.
[0009] Preferably, the limiting frame is a four-column structure, and the lower and upper pads are both fixedly connected to the outside of the locking blocks, which can be completely locked into the gaps between the four columns.
[0010] Preferably, both clamping plates have cavities inside, and the threaded block slides inside the cavity. The threaded block can slide smoothly up and down along the cavity, and the extension height of the adjustment plate can be adjusted simultaneously.
[0011] Preferably, a knob is fixedly connected to the outside of the screw, and the screw is threaded into the inside of the threaded block. The knob allows the user to apply force to rotate the adjusting screw.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] In use, this invention places a concrete block inside the limiting frame. Sliding engagement allows the lower and upper shims to be confined within the limiting frame, positioning them in the center. Simultaneously, a cylinder pulls a sliding plate on one side. Through the linkage of two connecting rods and a rotating rod, the two sliding plates can move synchronously towards or away from each other, ultimately clamping and limiting the concrete block with both clamping plates. This ensures the concrete block is centered within the limiting frame, guaranteeing that both the lower and upper shims are at their center, thus improving stability during testing. Furthermore, during clamping and limiting, rotating the screw allows the threaded block to move up and down along the external thread, adjusting the height of the adjusting plate. This further expands the clamping surface of both clamping plates, improving adaptability for clamping concrete blocks of different thicknesses. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the external structure of a tensile and compressive strength testing device for concrete components according to the present invention.
[0015] Figure 2 This is a schematic diagram of the internal structure of a tensile and compressive strength testing device for concrete components according to the present invention.
[0016] Figure 3 This is a schematic diagram of the disassembly structure of the slider of the tensile and compressive strength testing device for concrete components according to the present invention;
[0017] Figure 4 This is a schematic diagram of the external structure of the limiting frame of the tensile and compressive strength testing device for concrete components according to the present invention.
[0018] Figure 5 This is a schematic diagram of the internal structure of the clamping plate of a concrete component tensile and compressive strength testing device according to the present invention.
[0019] In the diagram: 1. Operating table; 2. Base column; 3. Fixing frame; 4. Cylinder; 5. Rotating rod; 6. Connecting rod; 7. Sliding plate; 8. Clamping plate; 9. Adjusting plate; 10. Limiting plate; 11. Slider; 12. Limiting frame; 13. Lower shim; 14. Upper shim; 15. Pressing plate; 16. Threaded block; 17. Cavity; 18. Screw; 19. Knob. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a tensile and compressive strength testing device for concrete components, comprising: an operating table 1, with a fixed frame 3 and four limiting plates 10 fixedly connected to the top of the operating table 1; a limiting frame 12 fixedly connected to the top of the fixed frame 3; and a lower pad 13, an upper pad 14, and a pressing plate 15 clamped inside the limiting frame 12; an auxiliary component, comprising two sliding plates 7, which are slidably connected to the inside of the two limiting plates 10 on both sides; a clamping plate 8 fixedly connected to the top of each sliding plate 7; a connecting rod 6 rotatably connected to the outside of each limiting plate 10; a rotating rod 5 rotatably connected to the outside of each connecting rod 6; an adjusting plate 9 slidably connected to the inside of each clamping plate 8; a threaded block 16 fixedly connected to the bottom of the adjusting plate 9; a screw 18 rotatably connected to the inside of the threaded block 16; and a cylinder 4 fixedly connected to the outside of the right sliding plate 7. In use, a concrete block is placed in the limiting frame. Inside the limiting frame 12, the lower shim 13 and the upper shim 14 can be confined within the limiting frame 12 by sliding engagement, and the lower shim 13 and the upper shim 14 are located in the middle position of the limiting frame 12. The synchronous cylinder 4 operates and can pull the sliding plate 7 on one side. Through the linkage of the two connecting rods 6 and the rotating rod 5, the two sliding plates 7 can be moved synchronously towards or away from each other, and finally the two clamping plates 8 can be clamped and limited synchronously, and the concrete block can be located in the center position of the limiting frame 12, ensuring that the lower shim 13 and the upper shim 14 are both located in the center position of the concrete block, so as to improve the stability of the testing process. At the same time, during the clamping and limiting of the concrete block, the threaded block 16 can be moved up and down along the external thread of the screw 18 by rotating the screw 18, and the height of the adjusting plate 9 can be adjusted. Furthermore, both clamping plates 8 can be expanded to expand the clamping surface, improving the adaptability of clamping concrete blocks of different thicknesses.
[0022] Two connecting rods 6 are respectively pivotally connected to the two sliding plates 7 and the two ends of the rotating rod 5. The cylinder 4 is fixedly connected to the top of the operating table 1. The cylinder 4 pushes the sliding plate 7. Through the linkage of the two connecting rods 6 and the rotating rod 5, the two clamping plates 8 can move closer to each other synchronously to clamp the concrete block.
[0023] The bottom of the control panel 1 is fixedly connected to four base columns 2, and the bottom of each of the four base columns 2 is fixedly connected to a rubber pad. The base columns 2 can provide stable support for the entire device.
[0024] Two sliders 11 are fixedly connected to the bottom of each of the two sliding plates 7. Limiting grooves are opened inside the four limiting plates 10, and the sliders 11 are locked inside the limiting grooves.
[0025] The limiting frame 12 has a four-column structure. The lower pad 13 and the upper pad 14 are both fixedly connected to the outside of the locking blocks, which can be completely locked into the gaps between the four columns.
[0026] When using the tensile and compressive strength testing device for this concrete component, the lower shim 13 and the upper shim 14 can be confined inside the limiting frame 12 by sliding engagement, and at the same time, the lower shim 13 and the upper shim 14 are located in the middle position of the limiting frame 12. Simultaneously, the cylinder 4 operates, which can pull the sliding plate 7 on one side. Through the linkage of the two connecting rods 6 and the rotating rod 5, the two sliding plates 7 can be moved synchronously towards or away from each other. Finally, the two clamping plates 8 can be clamped and limited synchronously, and the concrete block can be located in the center position of the limiting frame 12, ensuring that the lower shim 13 and the upper shim 14 are both located in the center position of the concrete block.
[0027] Please see Figures 1 to 4 This utility model provides a technical solution: a tensile and compressive strength testing device for concrete components, wherein the interior of each of the two clamping plates 8 is provided with a cavity 17, and the threaded block 16 slides inside the cavity 17. The threaded block 16 can slide smoothly up and down along the interior of the cavity 17, and the extension height of the adjusting plate 9 can be adjusted synchronously.
[0028] A knob 19 is fixedly connected to the outside of the screw 18. The screw 18 is threaded into the inside of the threaded block 16. The knob 19 allows the user to apply force to rotate the adjusting screw 18.
[0029] When using the tensile and compressive strength testing device for this concrete component, the screw 18 can be rotated to make the threaded block 16 move up and down along the external thread of the screw 18, which can ultimately adjust the height of the adjusting plate 9 and further expand the clamping surface of both clamping plates 8.
[0030] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.
[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0033] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A device for testing the tensile and compressive strength of concrete components, characterized in that, include: The operating table (1) has a fixed frame (3) and four limiting plates (10) fixedly connected to its top. The four limiting plates (10) have a limiting frame (12) fixedly connected to the top of the fixed frame (3). The limiting frame (12) has a lower pad (13), an upper pad (14) and a pressing plate (15) inside. The auxiliary component includes two sliding plates (7), which are slidably connected to the inside of two limiting plates (10) on both sides. A clamping plate (8) is fixedly connected to the top of each of the two sliding plates (7). A connecting rod (6) is rotatably connected to the outside of each of the two limiting plates (10). A rotating rod (5) is rotatably connected to the outside of each of the two connecting rods (6). An adjusting plate (9) is slidably connected to the inside of each of the two clamping plates (8). A threaded block (16) is fixedly connected to the bottom of the adjusting plate (9). A screw (18) is rotatably connected to the inside of the threaded block (16). A cylinder (4) is fixedly connected to the outside of the right sliding plate (7).
2. The tensile and compressive strength testing device for concrete components according to claim 1, characterized in that: The two connecting rods (6) are respectively pivotally connected to the two sliding plates (7) and the two ends of the rotating rod (5), and the cylinder (4) is fixedly connected to the top of the operating table (1).
3. The tensile and compressive strength testing device for concrete components according to claim 1, characterized in that: The bottom of the operating table (1) is fixedly connected to four bottom columns (2), and the bottom of each of the four bottom columns (2) is fixedly connected to a rubber pad.
4. The tensile and compressive strength testing device for concrete components according to claim 1, characterized in that: Two sliders (11) are fixedly connected to the bottom of each of the two sliding plates (7), and a limiting groove is opened inside each of the four limiting plates (10).
5. The tensile and compressive strength testing device for concrete components according to claim 1, characterized in that: The limiting frame (12) is a four-column structure, and the lower pad (13) and the upper pad (14) are both fixedly connected with locking blocks.
6. The tensile and compressive strength testing device for concrete components according to claim 1, characterized in that: Both clamping plates (8) have cavities (17) inside, and the threaded block (16) slides inside the cavity (17).
7. The tensile and compressive strength testing device for concrete components according to claim 1, characterized in that: A knob (19) is fixedly connected to the outside of the screw (18), and the screw (18) is threadedly connected to the inside of the threaded block (16).