A concrete vibration viscosity testing device
By designing a concrete vibration viscosity testing device, utilizing dynamic power supply and Hall effect sensors to detect the falling speed, the problem of determining the vibration viscosity of fresh concrete was solved, achieving high-precision and efficient test results and supporting construction optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CSCEC STRAIT CONSTR & DEV
- Filing Date
- 2025-05-29
- Publication Date
- 2026-07-07
AI Technical Summary
Existing technologies are insufficient for effectively measuring the vibratory structural viscosity of freshly mixed concrete, which affects construction quality and efficiency.
A concrete vibration viscosity testing device was designed, including a container, a simulated vibration testing device, and a controller system. By simulating the dynamic power supply of the vibrating rod and the detection of Hall sensors, the falling speed is calculated to determine the vibration viscosity of the concrete.
It enables rapid and accurate calculation of the vibration viscosity of concrete, reduces human error, improves measurement accuracy and operational safety, supports data storage and analysis, and provides a basis for optimizing concrete mix proportions.
Smart Images
Figure CN224471492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete testing technology, specifically a concrete vibration viscosity testing device. Background Technology
[0002] Concrete workability is one of the important skills of concrete, which reflects the physical properties of fresh concrete. Excellent concrete workability includes not only the fluidity, cohesiveness and bleeding of traditional concrete mixtures, but also the high fluidity and good slump retention required by modern concrete to meet the construction requirements of pumping and vibration-free construction.
[0003] The workability of concrete has a significant impact on the construction quality. Besides being easy to mix, the components of concrete must also be able to fill all corners of the formwork during pouring, especially when the formwork has irregular cross-sections or dense reinforcement; sufficient fluidity or self-compacting properties are essential. Concrete must also exhibit good stability during transportation, without segregation. For ready-mixed concrete, it should also have the ability to maintain its slump over time.
[0004] Many factors influence the workability of fresh concrete. Since fresh concrete is a suspension of aggregates in cement paste, factors affecting the rheological properties of the cement paste, such as the properties of the cement and mixing conditions, also affect the workability of the fresh concrete. In addition, factors affecting workability include the concrete mix proportions, the size and shape of the aggregate particles, and admixtures. The proportions of each component in the concrete have a significant impact on workability. Appropriately increasing the cement paste content in the concrete improves workability. The use of chemical and mineral admixtures is beneficial for improving concrete workability. Furthermore, the particle size distribution and shape of sand and gravel also affect the workability of the concrete.
[0005] Cast-in-place concrete slopes require high vibratory viscosity of the concrete, thus necessitating the determination of the vibratory viscosity of freshly mixed concrete. Therefore, this application studies a concrete vibration viscosity testing device to meet these experimental requirements. Utility Model Content
[0006] The purpose of this invention is to provide a concrete vibration viscosity testing device to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a concrete vibration viscosity testing device, comprising a container, a simulated vibration testing device, and a controller system, wherein the simulated vibration testing device is disposed above the container and connected thereto, and the controller system is electrically connected to the simulated vibration testing device.
[0008] Preferably, the container includes a body, a cover, a base, markings, and an installation port. The base is fixedly connected to the bottom of the body. The body is made of transparent material, and markings are provided on the side walls of the body. The cover fits over the top of the body, and an installation port is provided in the center of the cover to facilitate observation of the concrete filling volume and changes in the state during vibration, ensuring standardized filling volume and providing basic data for viscosity calculation. The base provides stable support to prevent the device from shaking during testing and affecting data accuracy. The cover positions the simulated vibration device through the installation port, while isolating external interference such as dust and airflow to ensure a controllable testing environment.
[0009] Preferably, the simulated vibration testing device includes a gantry frame, sliding rods, a vibrating rod, a counterweight, a limiting end vibrating motor, and a fixing sleeve. The gantry frame is fixed to the top of the cylinder cover. Two parallel sliding rods are vertically connected to the bottom of the top beam of the gantry frame. The sliding rods are provided with limiting ends. The vibrating rod is a hollow cylindrical structure with a vibrating motor installed inside. The two sides are fixed with sleeves that fit with the sliding rods with a clearance. The bottom is connected to a counterweight. The gantry frame and the sliding rods form a rigid frame to ensure that the vibrating rod falls vertically and avoids resistance errors caused by lateral deviation. The limiting ends prevent the vibrating rod from sliding off the track and ensure operational safety. The vibrating motor simulates the vibration frequency of an actual vibrator. The counterweight provides a constant driving force, enabling the device to overcome the viscosity resistance of concrete and fall stably. The clearance fit between the fixing sleeve and the sliding rod reduces friction and ensures that the vibration energy is effectively transferred to the concrete.
[0010] Preferably, the inner wall of the slide bar is provided with an axial limiting groove, and a conductive rail is laid at the bottom of the groove. The vibration motor inside the vibrating rod is connected to the spring-loaded contact piece through a wire. The end of the spring-loaded contact piece is inserted into the axial limiting groove and abuts against the conductive rail to conduct electricity. The conductive rail and the spring-loaded contact piece form a sliding electrical connection to ensure that the vibrating rod is continuously energized during the falling process, avoiding the entanglement problem of traditional cable connections. The axial limiting groove restricts the movement trajectory of the contact piece to prevent contact interruption due to vibration and improves the stability of power supply.
[0011] Preferably, the inner side of one upright of the gantry frame is provided with a first Hall sensor and a second Hall sensor spaced vertically apart, and a permanent magnet is fixed on the outer wall of the corresponding fixed sleeve. When the permanent magnet moves with the vibrating rod, it triggers the first Hall sensor and the second Hall sensor in sequence. The average speed is calculated by recording the time difference. At the same time, non-contact detection avoids the wear problem caused by mechanical triggering, and improves the data acquisition accuracy and device life.
[0012] Preferably, the positioning swing rod is hinged to the inner wall of the other side of the gantry frame through a fixed hinge seat. The positioning swing rod can be supported at the lower end of the fixed sleeve. The positioning swing rod is used to fix the initial height of the vibrator, ensuring that the drop distance of each test is consistent and eliminating the difference in initial conditions caused by human operation.
[0013] Preferably, the controller system includes a power supply, a programmable controller, and a computer. The conductive rail is connected to the power supply via a solenoid valve, which is controlled by the programmable controller. The first Hall sensor and the second Hall sensor are connected to the programmable controller for signal transmission to the computer. The programmable controller coordinates the start and stop of the vibration motor, the on / off state of the solenoid valve, and the acquisition of sensor signals to standardize the testing process. The computer receives sensor data in real time and automatically calculates the viscosity value, avoiding errors caused by human intervention. It also supports data storage and analysis, providing a basis for optimizing concrete mix proportions.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This concrete vibration viscosity testing device simulates the dynamic power supply structure of the vibrating rod, keeping the vibrating rod powered during its descent.
[0016] 2. This concrete vibration viscosity testing device calculates the vibration viscosity of different types of concrete by measuring the time of the falling velocity.
[0017] 3. This concrete vibration viscosity testing device features an overall experimental structure where the test is performed from the top and the material is fed from the bottom, allowing for easy separation and cleaning of the upper and lower parts. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the working structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the vibration structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the slide bar of this utility model;
[0021] Figure 4 This is a schematic diagram of the control structure of this utility model.
[0022] In the diagram: 1. Container; 101. Container body; 102. Container cover; 103. Base; 104. Marking scale; 105. Mounting port; 2. Simulated vibration test device; 201. Gantry frame; 202. Sliding rod; 203. Vibrating rod; 204. Counterweight; 205. Limiting end; 206. Vibration motor; 207. Fixing sleeve; 211. Axial limiting groove; 212. Conductive rail; 213. Wire; 214. Spring-loaded contact plate; 221. First Hall sensor; 222. Second Hall sensor; 223. Permanent magnet; 231. Fixed hinge seat; 232. Positioning swing rod; 3. Controller system; 301. Power supply; 302. Programmable controller; 303. Computer. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-4 The present invention provides the following technical solution: a concrete vibration viscosity testing device, comprising a container 1, a simulated vibration testing device 2 and a controller system 3, wherein the simulated vibration testing device 2 is disposed above the container 1 and connected thereto, and the controller system 3 is electrically connected to the simulated vibration testing device 2.
[0025] The container 1 includes a body 101, a cover 102, a base 103, marking scales 104, and an installation port 105. The base 103 is fixedly connected to the bottom of the body 101. The body 101 is made of transparent material. The side wall of the body 101 is provided with marking scales 104. The cover 102 is placed on the top of the body 101. The installation port 105 is opened in the center of the cover 102 to facilitate observation of the concrete filling volume and state changes during vibration, ensuring standardized filling volume and providing basic data for viscosity calculation. The base 103 provides stable support to prevent the device from shaking during the test and affecting the accuracy of the data. The cover 102 positions the simulated vibration device through the installation port 105, while isolating external interference such as dust and airflow to ensure a controllable test environment.
[0026] The simulated vibration testing device 2 includes a gantry frame 201, sliding rods 202, vibrating rods 203, counterweights 204, limiting ends 205, a vibration motor 206, and fixing sleeves 207. The gantry frame 201 is fixed to the top of the cylinder cover 102. Two parallel sliding rods 202 are vertically connected to the bottom of the top beam of the gantry frame 201. The ends of the sliding rods 202 are provided with limiting ends 205. The vibrating rods 203 are hollow cylindrical structures with the vibration motor 206 installed inside. The fixing sleeves 207 on both sides are clearance-fitted with the sliding rods 202. The bottom is connected to the counterweights 204. The gantry frame 201 and the sliding rods 202 form a... A rigid frame ensures the vibrator 203 falls vertically, avoiding resistance errors caused by lateral deviation. A limiting end 205 prevents the vibrator 203 from slipping off the track, ensuring operational safety. The vibration motor 206 simulates the vibration frequency of an actual vibrator, and the counterweight 204 provides a constant driving force, enabling the device to overcome the viscosity resistance of concrete and fall stably. The clearance fit between the fixing sleeve 207 and the sliding rod 202 reduces friction, ensuring effective transmission of vibration energy to the concrete. An axial limiting groove 211 is provided on the inner wall of the sliding rod 202, and a conductive rail 212 is laid at the bottom of the groove. The vibration motor 206 inside the vibrator 203 is connected to the guide rail. Wire 213 connects to spring-loaded contact piece 214. The end of spring-loaded contact piece 214 is engaged in the axial limiting groove 211 and abuts against the conductive rail 212 for conduction. The conductive rail 212 and spring-loaded contact piece 214 form a sliding electrical connection, ensuring that the vibrator 203 is continuously energized during its descent, avoiding the entanglement problem of traditional cable connections. The axial limiting groove 211 constrains the movement trajectory of the contact piece, preventing contact interruption due to vibration and improving power supply stability. The inner side of one upright of the gantry frame 201 is provided with a first Hall sensor 221 and a second Hall sensor 222 spaced vertically apart. A permanent magnet is fixed to the outer wall of the corresponding fixed sleeve 207. 223. When the permanent magnet 223 moves with the vibrating rod 203, it sequentially triggers the first Hall sensor 221 and the second Hall sensor 222. The average speed is calculated by recording the time difference. At the same time, non-contact detection avoids the wear problem caused by mechanical triggering, improves the data acquisition accuracy and device life. The positioning swing rod 232 is hinged to the inner wall of the other side of the gantry frame 201 through the fixed hinge seat 231. The positioning swing rod 232 can be supported at the lower end of the fixed sleeve 207. The positioning swing rod 232 is used to fix the initial height of the vibrating rod 203, ensuring that the drop distance is consistent for each test and eliminating the difference in initial conditions caused by human operation.
[0027] The controller system 3 includes a power supply 301, a programmable controller 302, and a computer 303. The conductive rail 212 is connected to the power supply 301 via a solenoid valve, which is controlled by the programmable controller 302. The first Hall sensor 221 and the second Hall sensor 222 are connected to the programmable controller 302 for signal transmission to the computer 303. The programmable controller 302 coordinates the start and stop of the vibration motor, the on and off of the solenoid valve, and the acquisition of sensor signals to standardize the testing process. The computer 303 receives sensor data in real time and automatically calculates the viscosity value to avoid errors caused by human intervention. It also supports data storage and analysis to provide a basis for optimizing concrete mix proportions.
[0028] In use, concrete is quantitatively filled into the cylinder 101 by marking the scale 104 on the filling cylinder 1. The base 103 is used to ensure the stability of the device. The cylinder cover 102 is closed and the simulated vibration test device 2 is positioned through the mounting port 105. The positioning swing rod 232 is supported on the lower end of the fixed sleeve 207 to fix the initial height of the vibrating rod 203. The programmable controller 302 of the controller system 3 triggers the solenoid valve to open. The power supply 301 supplies power to the vibration motor 206 through the conductive rail 212 and the spring-loaded contact plate 214. At the same time, the positioning swing rod 232 is released. Under the weight of the counterweight 204 and the action of the vibration motor 206, the vibrating rod 203... As the vibrating rod 203 falls vertically along the sliding rod 202, the permanent magnet 223 triggers the first Hall sensor 221 and the second Hall sensor 222 in sequence. The programmable controller 302 records the time difference and transmits the data to the computer 303. The computer 303 automatically calculates the falling speed based on the sensor spacing and time difference, and uses a preset algorithm to back-calculate the concrete vibration viscosity value. At the same time, it stores the test data for subsequent analysis. After the test, the vibrating rod 203 is reset by the positioning pendulum 232, and the programmable controller 302 controls the solenoid valve to cut off the power, completing a single test process. Multiple tests can be repeated.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A concrete vibration viscosity testing device comprising a holding cylinder (1), a simulated vibration testing device (2) and a controller system (3), characterized in that: The simulated vibration test device (2) is positioned above the container (1) and connected to it. The controller system (3) is electrically connected to the simulated vibration test device (2).
2. The concrete vibration viscosity testing device of claim 1, wherein: The container (1) includes a body (101), a lid (102), a base (103), markings (104), and a mounting port (105). The base (103) is fixedly connected to the bottom of the body (101). The body (101) is made of transparent material. The side wall of the body (101) is provided with markings (104). The lid (102) covers the top of the body (101). The mounting port (105) is opened in the center of the lid (102).
3. The concrete vibration viscosity testing device of claim 1, wherein: The simulated vibration test device (2) includes a gantry frame (201), a sliding rod (202), a vibrating rod (203), a counterweight (204), a limiting end (205), a vibration motor (206), and a fixing sleeve (207). The gantry frame (201) is fixed to the top of the cylinder cover (102). Two parallel sliding rods (202) are vertically connected to the bottom of the top beam of the gantry frame (201). The sliding rod (202) is provided with a limiting end (205) at its end. The vibrating rod (203) is a hollow cylindrical structure with a vibration motor (206) installed inside. The two sides are fixed with sleeves (207) and are in clearance fit with the sliding rod (202). The bottom is connected to the counterweight (204).
4. The concrete vibration viscosity testing device of claim 3, wherein: The inner wall of the slide bar (202) is provided with an axial limiting groove (211), and a conductive rail (212) is laid at the bottom of the axial limiting groove (211). The vibrating rod (203) is provided with a vibration motor (206) and is connected to a spring-loaded contact piece (214) through a wire (213). The end of the spring-loaded contact piece (214) is inserted into the axial limiting groove (211) and abuts against the conductive rail (212) for conduction.
5. The concrete vibration viscosity testing device of claim 4, wherein: The inner side of one side of the gantry frame (201) is provided with a first Hall sensor (221) and a second Hall sensor (222) spaced vertically apart, and a permanent magnet (223) is fixed on the outer wall of the corresponding side fixing sleeve (207).
6. The concrete vibration viscosity testing device of claim 5, wherein: The inner wall of the other side of the gantry frame (201) is hinged to the positioning swing rod (232) via a fixed hinge seat (231), and the positioning swing rod (232) can be supported at the lower end of the fixed sleeve (207).
7. The concrete vibration viscosity testing device of claim 6, wherein: The controller system (3) includes a power supply (301), a programmable controller (302), and a computer (303). The conductive rail (212) is connected to the power supply (301) through a solenoid valve. The solenoid valve is controlled by the programmable controller (302). The first Hall sensor (221) and the second Hall sensor (222) are connected to the programmable controller (302) for signal transmission, and the data is transmitted to the computer (303).