A centering positioning device for concrete mechanics test
By combining the centering and positioning mechanism with the anti-slip and shock-absorbing components, the problems of easy damage and inaccurate data in existing devices have been solved, thereby improving the stability and efficiency of concrete mechanics testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINGTAI ROAD & BRIDGE CONSTR GENERAL
- Filing Date
- 2025-06-03
- Publication Date
- 2026-07-14
AI Technical Summary
Existing centering and positioning devices are prone to damage in concrete mechanical tests, resulting in high maintenance costs and low data accuracy.
The design employs a combination of a centering and positioning mechanism and an anti-slip and shock-absorbing component. The centering and positioning mechanism provides initial positioning for the circular concrete, while the anti-slip and shock-absorbing component provides cushioning, reducing the impact force on the device and improving the stability and accuracy of the test data.
It improved the stability of the device and the accuracy of test data, reduced maintenance costs, and increased the efficiency of mechanical testing.
Smart Images
Figure CN224500151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building surveying, and more specifically, to a centering and positioning device for concrete mechanical testing. Background Technology
[0002] Concrete is a composite material made by mixing cementitious materials (such as cement), aggregates (such as sand and gravel), water, and added admixtures and additives in a certain proportion, and then hardening it through processes such as mixing, molding, and curing. All-steel slag concrete is a concrete material made by using steel slag as the coarse and fine aggregate to completely or mainly replace natural aggregates, and mixing it with cement, water, etc., in a specific proportion. From an experimental perspective, all-steel slag concrete is often prepared into both circular and square specimen shapes. Circular specimens are a more suitable choice when studying the mechanical properties of all-steel slag concrete under complex stress conditions, or when simulating the stress state of a circular cross-section structure.
[0003] Furthermore, concrete mechanics testing refers to the process of testing and evaluating the mechanical properties of concrete through a series of standardized testing methods (such as determining the strength, deformation, and failure characteristics of concrete under different stress states), providing a scientific basis for the design, construction, and maintenance of concrete structures. When conducting mechanical tests on concrete, a centering and positioning device is required to center and position the concrete to prevent inaccurate data during the test.
[0004] While existing centering and positioning devices possess the function of centering and positioning, the impact forces generated during mechanical testing of concrete directly damage the devices. Over time, this damage increases maintenance costs and reduces the efficiency of mechanical testing.
[0005] Furthermore, after the concrete is placed in the centering and positioning device, the centering and positioning device has poor stability in centering and positioning the concrete during the mechanical test, which may lead to uneven stress on the concrete. This results in inaccurate data during the mechanical test, thereby reducing the accuracy of the mechanical test data.
[0006] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0007] In view of the problems in the related technologies, this utility model proposes a centering and positioning device for concrete mechanics testing, so as to overcome the above-mentioned technical problems existing in the existing related technologies.
[0008] Therefore, the specific technical solution adopted by this utility model is as follows:
[0009] A centering and positioning device for concrete mechanics testing includes a placement platform; a plurality of support columns arranged in a circular pattern on top of the placement platform; a mounting plate located on the common top of the support columns; a centering and positioning mechanism located at the bottom of the mounting plate; a plurality of anti-slip and shock-absorbing components arranged in a circular pattern on the inner top of the placement platform; and a control console installed on one side of the placement platform. The mounting plate has a placement opening in the center, and the placement platform has placement grooves that mate with the anti-slip and shock-absorbing components.
[0010] Furthermore, to improve the stability during mechanical testing, enhance the accuracy of test data, and increase the efficiency of mechanical testing, the centering and positioning mechanism includes a retaining ring located at the bottom of the mounting plate. A connecting block is connected to the bottom of the retaining ring, and a fixing ring is connected to the bottom of the connecting block. Several limiting blocks are set on the circumference of the fixing ring, and a positioning block is set inside the limiting block. One end of the positioning block is set with an arc-shaped groove, and several anti-slip blocks are set on one side of the arc-shaped groove. An end block is set on the outer side of the top circumference of the retaining ring, and a moving block is set on the top of the end block. The moving block and the end block are rotatably connected. A lead screw is sleeved on the moving block, and a protective shell is sleeved on the outside of the lead screw. A servo motor is connected to the lead screw through the protective shell.
[0011] Several anti-slip blocks are arranged linearly, with their height gradually decreasing. The other end of the positioning block is movably connected to the mounting plate via a pin, and the limiting block and the fixing ring are also movably connected via a pin. A movable groove that mates with the moving block is provided on one side of the protective shell; the top and bottom of the movable groove are provided with abutting bristles. A retaining groove that mates with the retaining ring is provided inside the mounting plate.
[0012] Furthermore, to reduce the maintenance cost of the device, improve the efficiency of mechanical testing, and enhance the stability of the device and the accuracy of test data, the anti-slip and shock-absorbing component includes a holding block disposed inside the placement groove. The holding block has a triangular structure, with a T-shaped slider at one end. Several pressure-bearing columns arranged linearly are disposed on the top of the holding block. Compression springs are symmetrically disposed at the bottom of the holding block, with dampers installed inside the springs. Several T-shaped limiting grooves that mate with the T-shaped sliders are formed inside the circumference of the placement groove.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. By setting up a centering and positioning mechanism, the circular concrete is centered and fixed before mechanical testing. In conjunction with the anti-slip and shock-absorbing components, the stability during mechanical testing is improved, the accuracy of test data is enhanced, and the efficiency of mechanical testing is increased.
[0015] 2. By setting up anti-slip and shock-absorbing components, a placement opening, and a placement groove, the circular concrete is placed inside the placement opening and placement groove for initial centering and positioning. With the cooperation of the centering and positioning mechanism, a second centering and positioning is performed. After the circular concrete is centered and positioned, and with the assistance of the anti-slip and shock-absorbing components, the impact force generated during the mechanical test is reduced, which reduces the damage to the device, reduces the maintenance cost of the device, and improves the efficiency of the mechanical test, thereby improving the stability of the device and the accuracy of the test data. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of a centering and positioning device for a concrete mechanical test according to an embodiment of the present utility model;
[0018] Figure 2 This is a cross-sectional view of a centering and positioning device for a concrete mechanics test according to an embodiment of the present invention;
[0019] Figure 3 This is one of the partial structural schematic diagrams of a centering and positioning device for a concrete mechanics test according to an embodiment of the present utility model;
[0020] Figure 4 This is a schematic diagram of the centering and positioning mechanism in a centering and positioning device for a concrete mechanics test according to an embodiment of the present invention;
[0021] Figure 5 This is a schematic diagram of one side of the centering and positioning mechanism in a centering and positioning device for a concrete mechanics test according to an embodiment of the present invention.
[0022] Figure 6 This is a schematic diagram of one side of the anti-slip and shock-absorbing component in a centering and positioning device for a concrete mechanics test according to an embodiment of the present invention.
[0023] Figure 7 This is a second partial structural schematic diagram of a centering and positioning device for a concrete mechanics test according to an embodiment of the present utility model.
[0024] In the picture:
[0025] 1. Placement platform; 2. Support column; 3. Mounting plate; 4. Centering and positioning mechanism; 401. Snap ring; 402. Connecting block; 403. Fixing ring; 404. Limiting block; 405. Positioning block; 406. Arc groove; 407. Anti-slip slider; 408. End block; 409. Moving block; 410. Lead screw; 411. Protective shell; 412. Servo motor; 413. Movable groove; 414. Brush bristles; 415. Slot; 5. Anti-slip and shock-absorbing assembly; 501. Holding block; 502. T-shaped slider; 503. Pressure-bearing column; 504. Compression spring; 505. Damper; 506. T-shaped limiting groove; 6. Control console; 7. Placement port; 8. Placement groove; 9. Pressure sensor. Detailed Implementation
[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0027] According to an embodiment of the present invention, a centering and positioning device for concrete mechanical testing is provided.
[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-7 As shown, a centering and positioning device for a concrete mechanics test according to an embodiment of the present invention includes a placement platform 1; a plurality of support columns 2 disposed on the top of the placement platform 1 and arranged in a circular pattern; a mounting plate 3 disposed on the common top of the plurality of support columns 2; a centering and positioning mechanism 4 disposed on the bottom of the mounting plate 3; a plurality of anti-slip and shock-absorbing components 5 disposed on the inner top of the placement platform 1 and arranged in a circular pattern; and a control console 6 installed on one side of the placement platform 1. The mounting plate 3 has a placement opening 7 in the middle, and the placement platform 1 has a placement groove 8 that cooperates with the anti-slip and shock-absorbing components 5.
[0029] By employing the above-mentioned technical solution of this utility model, a centering and positioning mechanism 4 is provided to center and fix the circular concrete before conducting mechanical tests. In conjunction with the anti-slip and shock-absorbing component 5, the stability during the mechanical test is improved, the accuracy of the test data is enhanced, and the efficiency of the mechanical test is increased. By providing the anti-slip and shock-absorbing component 5, the placement opening 7, and the placement groove 8, the circular concrete is placed inside the placement opening 7 and the placement groove 8 for initial centering and positioning. A second centering and positioning is then performed in conjunction with the centering and positioning mechanism 4. After centering and positioning the circular concrete, and with the assistance of the anti-slip and shock-absorbing component 5, the impact force generated during the mechanical test is reduced, minimizing damage to the device, reducing maintenance costs, and improving the efficiency of the mechanical test. This results in improved device stability and data accuracy.
[0030] Furthermore, in practical applications, a control console 6 is located on one side of the placement platform 1, and the human-machine interface of the control console 6 is electrically connected to the centering and positioning mechanism 4 and the pressure sensor 9 in sequence. Operators can input relevant data through the control console 6, and utilize the centering and positioning mechanism 4 and the pressure sensor 9 to achieve centering and positioning of the circular concrete and collect data for mechanical tests.
[0031] In addition, the console 6 is equipped with a human-machine interface and a PLC (programmable logic controller). The human-machine interface is the interaction interface between the operator and the automation system. Its main function is to display the real-time operating status and the input of control commands. The PLC is used to execute specific control tasks, such as switch and sensor signal acquisition and processing.
[0032] It should be noted that the pressure sensor 9 can be model MSP330X or MPXV7002, etc.
[0033] In one embodiment, the centering and positioning mechanism 4 includes a retaining ring 401 disposed at the bottom of the mounting plate 3. A connecting block 402 is connected to the bottom of the retaining ring 401, and a fixing ring 403 is connected to the bottom of the connecting block 402. A plurality of limiting blocks 404 are disposed on the circumference of the fixing ring 403. A positioning block 405 is disposed inside the limiting block 404. An arc groove 406 is disposed at one end of the positioning block 405, and a plurality of anti-slip blocks 407 are disposed on one side of the arc groove 406. An end block 408 is disposed on the outer side of the top circumference of the retaining ring 401. A moving block 409 is disposed on the top of the end block 408, and the moving block 409 and the end block 408 are rotatably connected. A lead screw 410 is sleeved on the moving block 409, and a protective shell 411 is sleeved on the outer side of the lead screw 410. A servo motor 412 is connected to the lead screw 410 through the protective shell 411.
[0034] Several anti-slip blocks 407 are arranged linearly, with their heights gradually decreasing. The other end of the positioning block 405 is movably connected to the mounting plate 3 via a pin, and the limiting block 404 is movably connected to the fixing ring 403 via a pin. A movable groove 413 is provided on one side of the protective shell 411 to cooperate with the moving block 409; the top and bottom ends of the movable groove 413 are provided with abutting bristles 414. A retaining groove 415 is provided inside the mounting plate 3 to cooperate with the retaining ring 401, thereby improving the stability during mechanical testing, enhancing the accuracy of test data, and increasing the efficiency of mechanical testing.
[0035] The working principle of the centering and positioning mechanism 4: When the circular concrete enters the placement groove 8 from the placement opening 7, the operator uses the human-machine interface of the control console 6 to start the servo motor 412 and drive the lead screw 410 to rotate. The moving block 409 and the end block 408 are rotatably connected. Under the action of the thread of the lead screw 410, the end block 408 and the moving block 409 move along the movable groove 413 on one side of the protective shell 411 and drive the retaining ring 401 to move backward synchronously. The bristles 414 at the top and bottom of the movable groove 413 can prevent foreign objects from entering and prevent jamming. Through the retaining ring 401, The connecting block 402 and the fixing ring 403 rotate synchronously. Simultaneously, multiple limiting blocks 404 on the circumference of the fixing ring 403 push the positioning block 405 to rotate around the placement opening 7 at the pin's axial center. The arc-shaped groove 406 gradually fits against the outer wall of the circular concrete. The anti-slip block 407 contacts the surface of the circular concrete and generates friction. When the positioning block 405 completely aligns with the axis of the circular concrete, the operator again uses the human-machine interface of the control console 6 to control the servo motor 412 to stop driving, the lead screw 410 to stop and position the circular concrete, and the anti-slip block 407 to prevent the circular concrete from slipping, thus completing the centering and positioning. After the mechanical test, the operator uses the human-machine interface of the control console 6 to control the servo motor 412 to rotate in the opposite direction. The lead screw 410 pushes the moving block 409 forward, and the positioning block 405 moves outward under the action of the limiting blocks 404, allowing the circular concrete to be removed.
[0036] In one embodiment, the anti-slip and shock-absorbing component 5 includes a holding block 501 disposed inside the placement groove 8. The holding block 501 has a triangular structure, and a T-shaped slider 502 is provided at one end of the holding block 501. Several pressure-bearing columns 503 arranged in a linear direction are provided at the top of the holding block 501. Compression springs 504 are symmetrically arranged at the bottom of the holding block 501, and dampers 505 are provided inside the compression springs 504. Several T-shaped limiting grooves 506 that cooperate with the T-shaped sliders 502 are opened inside the circumference of the placement groove 8, thereby reducing the maintenance cost of the device, improving the efficiency of mechanical testing, and improving the stability of the device and the accuracy of the test data.
[0037] The working principle of the anti-slip and shock-absorbing component 5: When the circular concrete is placed inside the placement groove 8, the triangular structure of the pressure block 501 is symmetrically compressed by the compression spring 504 and damper 505 at the bottom and retracts downward into the bottom of the placement groove 8. The T-shaped slider 502 is embedded in the T-shaped limiting groove 506 inside the circumference of the placement groove 8 for limiting. When the circular concrete is pressed down, the bottom of the circular concrete presses against the top of the pressure block 501 and the pressure column 503. The compression spring 504 and damper 505 are used to buffer the downward pressure of the circular concrete. The multiple triangular structure of the pressure block 501 disperses the pressure and increases the friction at multiple contacts between the circular concrete and the multiple pressure columns 503 on the circumferential side wall of the placement groove 8.
[0038] Then, in coordination with the centering and positioning mechanism 4, the impact force of the circular concrete during the mechanical test is transmitted through the bearing column to the holding block 501. The impact force is then transmitted to the pressure sensor 9 and fed back to the human-machine interface of the control console 6. The force-bearing surface of the pressure sensor 9 is perpendicular to the axis of the circular concrete, ensuring that the impact force is uniformly transmitted to the pressure sensor 9 along the axis. The energy is absorbed by the compression spring 504 and the damper 505 through elastic deformation, reducing the impact force on the outside of the mechanical test. After the mechanical test, the centering and positioning mechanism 4 releases the circular concrete, and the staff removes the circular concrete. Subsequently, the springs of the compression spring 504 and the damper 505 release potential energy to push the holding block 501 back to its original position along the T-shaped limiting groove 506. The T-shaped slider 502, in coordination with the T-shaped limiting groove 506, prevents it from falling out.
[0039] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.
[0040] In practical applications, when the circular concrete enters the placement groove 8 from the placement port 7, the bottom of the circular concrete presses down onto the pressure block 501 and the top of the pressure column 503 of the anti-slip and shock-absorbing component 5. The compression spring 504 and the damper 505 are used to buffer the downward pressure of the circular concrete and perform initial positioning.
[0041] Subsequently, the staff used the human-machine interface of the control console 6 to control the servo motor 412 of the centering and positioning mechanism 4, and started the servo motor 412 to drive the lead screw 410 to rotate and drive the moving block 409 to rotate synchronously with the retaining ring 401, the connecting block 402 and the fixing ring 403. Meanwhile, multiple limit blocks 404 on the circumference of the fixing ring 403 pushed the positioning block 405 to rotate around the circular concrete direction of the placement opening 7 at the center of the pin axis. The arc groove 406 gradually fits into the outer wall of the circular concrete, completing the second centering and positioning.
[0042] Then, after centering and positioning, the mechanical test on the circular concrete begins. The impact force generated during the mechanical test is fed back to the human-machine interface of the control console 6 using the pressure sensor 9. The force-bearing surface of the pressure sensor 9 is perpendicular to the axis of the circular concrete to ensure that the impact force is uniformly transmitted to the pressure sensor 9 along the axis. The impact force on the outside of the circular concrete is absorbed by the compression spring 504 and the damper 505 through elastic deformation, reducing the impact force on the outside of the mechanical test.
[0043] After the mechanical test, the staff used the human-machine interface of the control console 6 to control the servo motor 412 to rotate in the opposite direction, and the lead screw 410 pushed the moving block 409 to move forward (the working principle of the centering and positioning mechanism 4 is as described above). The positioning block 405 moved outward under the action of the limiting block 404. After the circular concrete was removed, the springs of the compression spring 504 and the damper 505 released their potential energy to push the holding block 501 to reset along the T-shaped limiting groove 506 (the working principle of the anti-slip and shock-absorbing component 5 is as described above).
[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A centering and positioning device for concrete mechanical testing, characterized in that, include: Placement platform (1); A plurality of support columns (2) are disposed on the top of the placement platform (1), and the plurality of support columns (2) are arranged in a circular pattern; Mounting plate (3) is disposed on the common top of several of the support columns (2); The centering and positioning mechanism (4) is located at the bottom of the mounting plate (3); Several anti-slip and shock-absorbing components (5) are disposed on the inner top of the placement platform (1), and the several anti-slip and shock-absorbing components (5) are arranged in a circle. The control console (6) is installed on one side of the placement platform (1).
2. The centering and positioning device for concrete mechanical testing according to claim 1, characterized in that, The mounting plate (3) has a placement opening (7) in the middle, and the placement platform (1) has a placement groove (8) that cooperates with the anti-slip and shock-absorbing component (5).
3. The centering and positioning device for concrete mechanical testing according to claim 1, characterized in that, The centering and positioning mechanism (4) includes a retaining ring (401) disposed at the bottom of the mounting plate (3). A connecting block (402) is connected to the bottom of the retaining ring (401). A fixing ring (403) is connected to the bottom of the connecting block (402). Several limiting blocks (404) are disposed on the circumference of the fixing ring (403). A positioning block (405) is disposed inside the limiting block (404). An arc groove (406) is disposed at one end of the positioning block (405). Several anti-slip blocks (407) are disposed on one side of the arc groove (406). An end block (408) is provided on the outer side of the top circumference of the retaining ring (401), and a movable block (409) is provided on the top of the end block (408). The movable block (409) and the end block (408) are rotatably connected. A lead screw (410) is sleeved on the movable block (409), and a protective shell (411) is sleeved on the outer side of the lead screw (410). The lead screw (410) passes through the protective shell (411) and is connected to a servo motor (412).
4. The centering and positioning device for concrete mechanical testing according to claim 3, characterized in that, The anti-slip blocks (407) are arranged in a linear direction, and the height of the anti-slip blocks (407) gradually decreases.
5. The centering and positioning device for concrete mechanical testing according to claim 3, characterized in that, The other end of the positioning block (405) is movably connected to the mounting plate (3) via a pin, and the limiting block (404) is movably connected to the fixing ring (403) via a pin.
6. The centering and positioning device for concrete mechanical testing according to claim 3, characterized in that, The protective shell (411) has a movable groove (413) on one side that cooperates with the movable block (409). The top and bottom of the movable groove (413) are provided with opposing bristles (414).
7. The centering and positioning device for concrete mechanical testing according to claim 3, characterized in that, The mounting plate (3) has a slot (415) inside that cooperates with the retaining ring (401).
8. The centering and positioning device for concrete mechanical testing according to claim 2, characterized in that, The anti-slip and shock-absorbing component (5) includes a pressure block (501) disposed inside the placement groove (8), and the pressure block (501) has a triangular structure, and a T-shaped slider (502) is provided at one end of the pressure block (501). The top of the pressure block (501) is provided with several pressure-bearing columns (503) arranged in a linear direction. A compression spring (504) is symmetrically arranged at the bottom of the pressure block (501), and a damper (505) is arranged inside the compression spring (504).
9. The centering and positioning device for concrete mechanical testing according to claim 8, characterized in that, The placement groove (8) has several T-shaped limiting grooves (506) inside its circumference that cooperate with the T-shaped slider (502).