Concrete compression testing machine
The concrete pressure testing machine, which monitors and controls the distance between the pressing block and the concrete sample in real time, solves the problem of pressure deviation caused by sample size differences and achieves higher detection accuracy and operational convenience.
Patent Information
- Application Number
- CN202422745457.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-12
AI Technical Summary
During the testing process of existing concrete pressure testing machines, pressure deviation caused by differences in concrete sample size affects the accuracy of test results.
A distance sensor is used to monitor the distance between the pressing block and the concrete sample in real time. The pressing block pauses when it is 1-2 cm close to the sample, and then presses down at a constant speed. The sample is fixed with a combination of motors, screws, sliders, clamps and other structures to ensure that the pressure is evenly applied.
It effectively reduces the pressure deviation caused by inconsistent concrete sample sizes and improves detection accuracy. The device has a simple structure, easy operation and strong applicability.
Smart Images
Figure CN223413116U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pressure testing machines, and in particular to a concrete pressure testing machine. Background Art
[0002] Compression testing machines are widely used in concrete material performance testing. Their primary function is to measure the compressive strength of concrete specimens. With technological advancements, current compression testing machines are undergoing continuous optimization in terms of mechanical structure and control systems, aiming to further improve their measurement accuracy and ease of operation.
[0003] The concrete pressure testing machine commonly used at present applies pressure to the sample at a constant speed until the sample is destroyed, and records the pressure changes during this process. Although this method is widely used, due to the inevitable slight differences in the size of concrete samples, even if the pressure is applied at a constant speed, it cannot be ensured that the pressure changes experienced by each sample are completely consistent.
[0004] During the testing process of conventional concrete pressure testing machines, due to the difference in concrete sample size, there may be deviations in the actual pressure exerted on the concrete sample. This deviation will have an adverse effect on the accuracy of the test results. This is a major problem facing current technology. Utility Model Content
[0005] In view of the deficiencies of the prior art, the utility model provides a concrete pressure testing machine, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.
[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a concrete pressure testing machine, comprising a base, the top of the base is fixedly assembled with a frame, the top of the frame is fixedly assembled with a controller, the outer edge of the frame is fixedly assembled with a fixed platform, the top of the fixed platform is fixedly assembled with a hydraulic cylinder, the output end of the hydraulic cylinder is slidably connected to the inner wall of the fixed platform and is fixedly connected to the top of the push rod, the inner wall of the push rod is threadedly connected with a pressure block, the inner bottom of the pressure block is fixedly assembled with a pressure sensor, the outer edge of the pressure block is threadedly connected with a threaded ring, and the bottom of the threaded ring is fixedly assembled with a distance sensor, two square grooves are symmetrically provided on the top of the base, the inner wall of the square groove is fixedly assembled with a motor, the power output shaft of the motor is fixedly connected with a lead screw, the outer edge of the lead screw is threadedly connected with a slider, the top of the slider is fixedly assembled with a clamping block, the inner wall of the clamping block is evenly provided with a number of circular holes, the inner wall of the circular hole is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to a rubber column.
[0007] As a preferred embodiment, one end of the rubber column close to the spring is slidably connected to the inner wall of the circular hole, and the outer diameter of the rubber column is adapted to the inner wall diameter of the circular hole.
[0008] By adopting the above technical solution, when clamping concrete samples of different shapes and specifications, the raised portion will push the rubber column to move toward the inner wall of the circular hole, so that the exposed length of the rubber column at each position can be adjusted according to the shape of the concrete sample, thereby ensuring the stability of the clamping of the concrete sample and further enhancing the applicability and convenience of the testing machine.
[0009] As a preferred embodiment, the distance sensor, hydraulic cylinder and controller are electrically connected, the pressure sensor and controller are electrically connected, the distance sensor can be replaced by a laser rangefinder or an infrared rangefinder, and the bottom of the distance sensor is 5 cm away from the bottom of the pressing block.
[0010] By adopting the above technical solution, the distance between the bottom of the briquette and the concrete sample can be monitored in real time through the distance sensor. When the distance between the bottom of the briquette and the concrete sample is 1-2 cm, the signal of the distance sensor can be received in time and reacted quickly to control the hydraulic cylinder to stop the movement of the briquette. After a short pause, the controller starts the hydraulic cylinder again, so that the briquette can press the concrete sample steadily at a constant speed, thereby further ensuring the accuracy of the test.
[0011] As a preferred embodiment, the number of the motor, lead screw, slider and clamp block is two, and the two motors, lead screw, slider and clamp block are symmetrically arranged on the inner wall and upper position of the two square grooves, and the number of the circular holes, springs and rubber columns is several, and the several circular holes, springs and rubber columns are evenly distributed on the inner walls of the two clamp blocks.
[0012] By adopting the above technical solution, the concrete sample placed in the middle of the top of the base can be clamped from two opposite directions, which not only can firmly fix the concrete sample, but also ensure that the concrete sample is exactly below the center line of the pressing block. This design cleverly ensures that even if there are slight differences in the size of the concrete samples, the pressing block can still apply uniform and stable pressure to the concrete samples.
[0013] As a preferred embodiment, the inner walls of the two square grooves are fixedly equipped with bearings, and the ends of the two lead screws away from the motor are fixedly connected to the inner rings of the bearings.
[0014] By adopting the above technical solution, the stability of the two screws during rotation can be guaranteed, and the screws at the output end of the motor will not easily swing left and right when rotating.
[0015] As a preferred embodiment, the slider is slidably connected to the inner wall of the square groove, the outer side of the slider is in contact with the inner wall of the square groove, and the clamping block is slidably connected to the top position of the base.
[0016] By adopting the above technical solution, the rotation of the lead screw can drive the slider to slide stably and parallel to the inner wall of the square groove, and can ensure that the clamping block slides stably on the top of the base.
[0017] Beneficial effects of this application:
[0018] 1. This concrete pressure testing machine monitors and controls the distance between the pressure block and the concrete sample in real time, ensuring that the pressure block pauses when it moves to within 1-2 cm of the concrete sample and then presses down again at a constant speed, thereby effectively reducing the pressure deviation caused by the inconsistency of the concrete sample size and improving the detection accuracy of the concrete pressure test. The mechanical structure of the device is simple to adjust, easy to operate, and easy to promote and apply.
[0019] 2. This concrete pressure testing machine, through the use of a motor, lead screw, slider, clamp, circular hole, spring and rubber column, can fix the concrete sample and ensure that the concrete sample is located below the center line of the pressure block. Even if the concrete sample size varies slightly, the pressure block can apply more uniform pressure to the concrete sample, further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of the three-dimensional structure of this application;
[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the base of this application;
[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the clamping block of this application;
[0023] Figure 4 For this application Figure 3 A in the middle is an enlarged structural diagram;
[0024] Figure 5 This is a schematic diagram of the bottom-up structure of this application.
[0025] Numbers in the figure: 1. Base; 2. Frame; 3. Controller; 4. Fixed platform; 5. Hydraulic cylinder; 6. Push rod; 7. Pressure block; 8. Pressure sensor; 9. Threaded ring; 10. Distance sensor; 11. Square groove; 12. Motor; 13. Lead screw; 14. Slider; 15. Clamp; 16. Round hole; 17. Spring; 18. Rubber column. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.
[0027] Reference Figure 1-5 , a concrete pressure testing machine, including a base 1, the top of the base 1 is fixedly assembled with a frame 2, the top of the frame 2 is fixedly assembled with a controller 3, the outer edge of the frame 2 is fixedly assembled with a fixed platform 4, the top of the fixed platform 4 is fixedly assembled with a hydraulic cylinder 5, the output end of the hydraulic cylinder 5 is slidably connected to the inner wall of the fixed platform 4 and is fixedly connected to the top of the push rod 6, the inner wall of the push rod 6 is threadedly connected with a pressure block 7, the inner bottom of the pressure block 7 is fixedly assembled with a pressure sensor 8, the outer edge of the pressure block 7 is threadedly connected with a threaded ring 9, and the bottom of the threaded ring 9 is fixedly assembled with a distance sensor 10. Two square grooves 11 are symmetrically provided on the top of the base 1, the inner wall of the square groove 11 is fixedly assembled with a motor 12, the power output shaft of the motor 12 is fixedly connected with a screw 13, the outer edge of the screw 13 is threadedly connected with a slider 14, the top of the slider 14 is fixedly assembled with a clamping block 15, the inner wall of the clamping block 15 is evenly provided with a number of circular holes 16, the inner wall of the circular hole 16 is fixedly connected to one end of a spring 17, and the other end of the spring 17 is fixedly connected to a rubber column 18.
[0028] See Figure 3 and Figure 4 The end of the rubber column 18 close to the spring 17 is slidably connected to the inner wall of the circular hole 16. The outer diameter of the rubber column 18 is adapted to the inner wall diameter of the circular hole 16, so that when clamping concrete samples of different shapes and specifications, the convex part will push the rubber column 18 to move toward the inner wall of the circular hole 16, so that the exposed length of the rubber column 18 at each position can be adjusted according to the shape of the concrete sample, thereby ensuring the stability of the clamping of the concrete sample, further enhancing the applicability and convenience of the testing machine.
[0029] See Figure 1 and Figure 5 The distance sensor 10, the hydraulic cylinder 5 and the controller 3 are all electrically connected, and the pressure sensor 8 and the controller 3 are electrically connected. The distance sensor 10 can be replaced by a laser rangefinder or an infrared rangefinder. The bottom of the distance sensor 10 is 5 cm away from the bottom of the pressing block 7, so that the distance between the bottom of the pressing block 7 and the concrete sample can be monitored in real time through the distance sensor 10. When the distance between the bottom of the pressing block 7 and the concrete sample is 1-2 cm, the signal of the distance sensor 10 can be received in time, and the controller 3 can react quickly to control the hydraulic cylinder 5 to stop the movement of the pressing block 7. After a short pause, the controller 3 starts the hydraulic cylinder 5 again, so that the pressing block 7 can press the concrete sample steadily at a constant speed, thereby further ensuring the accuracy of the test.
[0030] See Figure 1 There are two motors 12, two lead screws 13, two sliders 14 and two clamps 15, and the two motors 12, lead screws 13, two sliders 14 and two clamps 15 are symmetrically arranged on the inner wall and upper position of the two square grooves 11. There are several circular holes 16, springs 17 and rubber columns 18, and the several circular holes 16, springs 17 and rubber columns 18 are evenly distributed on the inner walls of the two clamps 15, so that the concrete sample placed in the middle of the top of the base 1 can be clamped from two opposite directions, thereby not only firmly fixing the concrete sample, but also ensuring that the concrete sample is exactly below the center line of the pressure block 7. This design cleverly ensures that even if there are slight differences in the sizes of the concrete samples, the pressure block 7 can apply uniform and stable pressure to the concrete sample.
[0031] See Figure 2 and Figure 3 The inner walls of the two square grooves 11 are fixedly equipped with bearings, and the ends of the two screws 13 away from the motor 12 are fixedly connected to the inner ring of the bearing, so as to ensure the stability of the two screws 13 during rotation and ensure that the screws 13 will not easily swing left and right when the output end of the motor 12 rotates.
[0032] See Figure 2 and Figure 3 The slider 14 is slidably connected to the inner wall of the square groove 11, the outer side of the slider 14 fits with the inner wall of the square groove 11, and the clamping block 15 is slidably connected to the top position of the base 1, so that the rotation of the screw 13 can drive the slider 14 to slide stably and parallel to the inner wall of the square groove 11, and can ensure that the clamping block 15 slides stably on the top of the base 1.
[0033] Working principle: When using this device, first place the concrete sample in the middle of the top of the base 1, then drive the two motors 12 to drive the two lead screws 13 to rotate, and then drive the two sliders 14 and the clamping blocks 15 to slide until the rubber columns 18 on the outside of the two clamping blocks 15 contact the outside of the concrete sample. Then, when clamping concrete samples of different shapes and specifications, the raised part will push the rubber column 18 to move toward the inner wall of the circular hole 16, so that the exposed length of the rubber column 18 at each position can be adjusted according to the shape of the concrete sample, thereby ensuring the stability of the clamping of the concrete sample. The applicability and convenience of the testing machine are further enhanced. Then, the hydraulic cylinder 5 can be started by the controller 3 to drive the pressing block 7 to move downward, and the distance between the bottom of the pressing block 7 and the concrete sample can be monitored in real time through the distance sensor 10. When the distance between the bottom of the pressing block 7 and the concrete sample is 1-2 cm, the signal of the distance sensor 10 is received in time, and the controller 3 responds quickly to control the hydraulic cylinder 5 to stop the movement of the pressing block 7. After a short pause, the controller 3 starts the hydraulic cylinder 5 again, so that the pressing block 7 can press the concrete sample steadily at a constant speed, thereby further ensuring the accuracy of the test.
[0034] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.
Claims
1. A concrete pressure testing machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly equipped with a frame (2), the top of the frame (2) is fixedly equipped with a controller (3), the outer edge of the frame (2) is fixedly equipped with a fixed platform (4), the top of the fixed platform (4) is fixedly equipped with a hydraulic cylinder (5), the output end of the hydraulic cylinder (5) is slidably connected to the inner wall of the fixed platform (4) and fixedly connected to the top of the push rod (6), the inner wall of the push rod (6) is threadedly connected to a pressure block (7), the inner bottom of the pressure block (7) is fixedly equipped with a pressure sensor (8), the outer edge of the pressure block (7) is threadedly connected to a threaded ring (9), the bottom of the threaded ring (9) is fixedly connected. A distance sensor (10) is provided, and two square grooves (11) are symmetrically provided on the top of the base (1), a motor (12) is fixedly provided on the inner wall of the square groove (11), a power output shaft of the motor (12) is fixedly connected to a lead screw (13), an outer edge of the lead screw (13) is threadedly connected to a slider (14), a clamping block (15) is fixedly provided on the top of the slider (14), a plurality of circular holes (16) are evenly provided on the inner wall of the clamping block (15), one end of a spring (17) is fixedly provided on the inner wall of the circular hole (16), and a rubber column (18) is fixedly provided on the other end of the spring (17).
2. A concrete compression testing machine according to claim 1, characterized in that: One end of the rubber column (18) close to the spring (17) is slidably connected to the inner wall of the circular hole (16), and the outer diameter of the rubber column (18) is adapted to the inner wall diameter of the circular hole (16).
3. A concrete compression testing machine according to claim 1, characterized in that: The distance sensor (10), the hydraulic cylinder (5) and the controller (3) are all electrically connected, and the pressure sensor (8) and the controller (3) are electrically connected. The distance sensor (10) can be replaced by a laser rangefinder or an infrared rangefinder. The distance between the bottom of the distance sensor (10) and the bottom of the pressing block (7) is 5 cm.
4. A concrete pressure testing machine according to claim 1, characterized in that: The number of the motor (12), the lead screw (13), the slider (14) and the clamping block (15) is two, and the two motors (12), the lead screw (13), the slider (14) and the clamping block (15) are symmetrically arranged on the inner wall and the upper position of the two square grooves (11). The number of the circular hole (16), the spring (17) and the rubber column (18) is several, and the several circular holes (16), the spring (17) and the rubber column (18) are evenly distributed on the inner wall of the two clamping blocks (15).
5. A concrete pressure testing machine according to claim 1, characterized in that: The inner walls of the two square grooves (11) are fixedly equipped with bearings, and the ends of the two lead screws (13) away from the motor (12) are fixedly connected to the inner rings of the bearings.
6. A concrete pressure testing machine according to claim 1, characterized in that: The slider (14) is slidably connected to the inner wall of the square groove (11), the outer side of the slider (14) is in contact with the inner wall of the square groove (11), and the clamping block (15) is slidably connected to the top position of the base (1).