Horizontal shaft type concrete rheometer
By using the horizontal agitation component and data acquisition system of the horizontal shaft concrete rheometer, the problem of inaccurate testing caused by gravity settlement in the existing technology has been solved, and accurate rheological performance testing of slightly bleeding concrete has been achieved.
Patent Information
- Application Number
- CN202520221104.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing rheometers cannot effectively test concrete samples with slight bleeding, resulting in inaccurate test results or inability to complete measurements, especially since aggregate deposition caused by gravity settlement affects the test results.
A horizontal shaft concrete rheometer was designed, which uses a horizontally rotating agitator and a drive shaft system. The agitator reduces the influence of gravity settlement and maintains the concrete aggregate suspension system. Combined with a data acquisition component, accurate rheological data is obtained.
It improves the accuracy of concrete rheological property testing, can effectively test concrete samples with slight bleeding, reduces testing errors and jamming, and enables reliable testing of different types of concrete.
Smart Images
Figure CN223581685U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concrete detection technical field, especially relate to a horizontal shaft type concrete rheometer. BACKGROUND
[0002] The concrete rheometer is an instrument that calculates rheological parameters such as sample viscosity, storage modulus by measuring rheological data such as sample shear rate, shear stress and analyzes material rheological properties.
[0003] At present, the existing rheometer mostly includes a vertically arranged charging cylinder, the blade is rotated in the charging cylinder by the motor driving, and the torque of the blade is detected to calculate the rheological parameters of the concrete. However, the rheometer is only suitable for testing mortar or concrete with very good workability, i.e. concrete with very small yield stress, during the test process, and cannot test slightly segregated concrete samples. SUMMARY
[0004] The utility model aims at at least solving one of the technical problems existing in the prior art. For this purpose, the utility model provides a horizontal shaft type concrete rheometer, which can reduce the influence of gravity settlement on the test of the rheological properties of concrete and improve the accuracy of the test of the rheological properties.
[0005] The horizontal shaft type concrete rheometer according to the utility model embodiment comprises a container for loading a sample to be tested;
[0006] An agitating assembly is arranged in the container, and the rotation axis of the agitating assembly is parallel to the horizontal plane;
[0007] A driving assembly;
[0008] A transmission shaft assembly, the rotation axis of the transmission shaft assembly is collinear with the rotation axis of the agitating assembly, one end of the transmission shaft assembly extends into the container and is in transmission connection with the agitating assembly, and the other end of the transmission shaft assembly is in transmission connection with the driving assembly;
[0009] A data acquisition assembly is connected with the transmission shaft assembly.
[0010] The horizontal shaft type concrete rheometer according to the utility model embodiment has at least the following beneficial effects: the concrete to be tested is put into the container, the driving assembly drives the transmission shaft assembly to rotate, and then the power is transmitted to the agitating assembly; the agitating assembly directly agitates the concrete to be tested in the container, since the forces are mutual, the transmission shaft assembly is subjected to the reaction force of the agitating assembly, the data acquisition assembly is connected with the transmission shaft assembly, and the test value for calculating the rheological data of the concrete can be acquired.
[0011] According to some embodiments of the present application, the stirring assembly comprises a first support, a second support and a stirring head, the first support and the second support are respectively arranged at two ends of the container, and the stirring head is detachably connected between the first support and the second support.
[0012] According to some embodiments of the present application, the first support and the second support are both bearings.
[0013] According to some embodiments of the present application, the stirring head comprises a shaft body and a plurality of plate bodies, the long edges of the plate bodies are parallel to the shaft body, one long edge of the plate body is connected with the shaft body, and the plurality of plate bodies are distributed around the circumference of the shaft body.
[0014] According to some embodiments of the present application, the shaft body is provided with a boss, the boss is arranged along the axial direction of the shaft body, the length of the boss is equal to the long edge of the plate body, and the plate body is connected to the boss.
[0015] According to some embodiments of the present application, the driving assembly comprises a motor, a shaft coupling and a driver, the motor and the transmission shaft assembly are connected through the shaft coupling, the driver is electrically connected with the motor, and the driver is used for controlling the motor.
[0016] According to some embodiments of the present application, the data acquisition assembly comprises a torque sensor, an angular velocity sensor and a data processing device, the torque sensor and the angular velocity sensor are both arranged on the transmission shaft assembly, the torque sensor is electrically connected with the data processing device, and the angular velocity sensor is electrically connected with the data processing device.
[0017] According to some embodiments of the present application, further comprising a temperature control assembly, the temperature control assembly is arranged in the container, and the temperature control assembly can adjust the temperature in the container.
[0018] According to some embodiments of the present application, the temperature control assembly comprises independent refrigeration elements and heating elements.
[0019] According to some embodiments of the present application, further comprising a support frame and a second driving assembly, the container is arranged on the support frame, the second driving assembly is in transmission connection with the container to drive the container to rotate, and an opening is arranged on the side wall of the container.
[0020] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0021] The utility model is further described below in combination with the drawings and embodiments, in which
[0022] Figure 1 It is the structure schematic diagram of the embodiment of the utility model bed shaft type concrete rheometer;
[0023] Figure 2 It is the structure schematic diagram of the first kind of stirring head of the embodiment of the utility model.
[0024] Figure 3 It is the structure schematic diagram of the second kind of stirring head of the embodiment of the utility model.
[0025] Reference signs:
[0026] Container 100, opening 110, stirring assembly 200, first support 210, second support 220, stirring head 230, shaft body 231, plate body 232, boss 233, drive assembly 300, motor 310, shaft coupling 320, driver 330, transmission shaft assembly 400, data acquisition assembly 500, torque sensor 510, angular velocity sensor 520, data processing device 530, temperature control assembly 600, refrigeration element 610, heating element 620, support frame 700. DETAILED DESCRIPTION
[0027] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0028] In the description of the utility model, it should be understood that the orientation description, such as the orientation or position relationship of the upper, lower, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.
[0029] In the description of the utility model, the plurality refers to two or more. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0030] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.
[0031] As described in the background, the existing rheometer is only suitable for testing mortar or concrete with very good workability. This is because the large flow state concrete may present a slight bleeding segregation state at the fresh stage, factory stage or even pouring stage. In the traditional rheological property test process, the slightly bleeding concrete will cause aggregate settlement and paste floating due to gravity, and the rotation of the blade during the test further aggravates the sinking of the concrete. The lower aggregate accumulates and overlaps each other, and the original concrete aggregate suspension system becomes a close-packed aggregate system. In this case, the blade of the test rotor is often stuck, or the consumed torque is very large, resulting in that the test result completely deviates from the actual rheological property of the concrete, cannot correctly characterize, and even cannot complete the measurement because the blade is stuck.
[0032] Referring to Figure 1 An embodiment of the horizontal shaft type concrete rheometer of the utility model, including container 100, agitating assembly 200, drive assembly 300, transmission shaft assembly 400 and data acquisition assembly 500.
[0033] Container 100 is used to load the sample to be tested;Agitating assembly 200 is erected in container 100, and the rotation axis of agitating assembly 200 is parallel to the horizontal plane;The rotation axis of transmission shaft assembly 400 is collinear with the rotation axis of agitating assembly 200, one end of transmission shaft assembly 400 extends into container 100 and is in transmission connection with agitating assembly 200, and the other end of transmission shaft assembly 400 is in transmission connection with drive assembly 300;Data acquisition assembly 500 is connected with transmission shaft assembly 400.
[0034] The concrete to be tested is put into container 100, drive assembly 300 drives transmission shaft assembly 400 to rotate, and then power is transmitted to agitating assembly 200;Agitating assembly 200 directly agitates the concrete to be tested in container 100, since the forces are mutual, transmission shaft assembly 400 is subjected to the reaction force of agitating assembly 200, data acquisition assembly 500 is connected with transmission shaft assembly 400, so that the test value for calculating the rheological data of concrete can be acquired.
[0035] It should be understood that the rotation axis of agitating assembly 200 is parallel to the horizontal plane, and when agitating assembly 200 agitates the concrete in container 100, the concrete is agitated up and down, which can slow down the sinking of the concrete aggregate, and can better keep the concrete in the aggregate suspension system, that is, the influence of gravity settlement on the rheological property test of concrete can be reduced, and the accuracy of the rheological property test can be improved.
[0036] It can be understood that the stirring assembly 200 comprises a first support 210, a second support 220 and a stirring head 230, the first support 210 and the second support 220 are respectively arranged at two ends of the container 100, and the stirring head 230 is detachably connected between the first support 210 and the second support 220.
[0037] The stirring head 230 is used for stirring the concrete, and different types of stirring heads 230 may need to be replaced when different types of concrete are tested, so the stirring head 230 is detachably connected between the first support 210 and the second support 220, which facilitates replacement of the stirring head 230.
[0038] It should be understood that after the concrete rheological test is completed, the concrete in the container 100 needs to be poured and cleaned, and the stirring head 230 is also detached to facilitate cleaning of the container 100.
[0039] It can be understood that the first support 210 and the second support 220 are bearings.
[0040] The stirring head 230 is in contact with the bearing, which can reduce the friction of the rotation of the stirring head 230 and minimize the test error caused by friction.
[0041] Referring to Figure 2 It can be understood that, in some embodiments, the first type of stirring head 230 comprises a shaft body 231 and a plurality of plate bodies 232, the long edges of the plate bodies 232 are parallel to the shaft body 231, and one long edge of the plate body 232 is connected to the shaft body 231, and the plurality of plate bodies 232 are distributed around the circumference of the shaft body 231.
[0042] Referring to Figure 3 It can be understood that, in some other embodiments, the second type of stirring head 230 is based on the first type of stirring head 230, the shaft body 231 is further provided with a boss 233, the boss 233 is arranged along the axial direction of the shaft body 231, and the length of the boss 233 is equal to the long edge of the plate body 232, and the plate body 232 is connected to the boss 233.
[0043] It can be understood that the driving assembly 300 comprises a motor 310, a shaft coupling 320 and a driver 330, the motor 310 is connected to the transmission shaft assembly 400 through the shaft coupling 320, and the driver 330 is electrically connected to the motor 310, and the driver 330 is used for controlling the motor 310.
[0044] The driver 330 can control the rotation speed and direction of the motor 310 to provide an accurate shear rate.
[0045] It can be understood that the data acquisition assembly 500 comprises a torque sensor 510, an angular velocity sensor 520 and a data processing device 530, the torque sensor 510 and the angular velocity sensor 520 are arranged on the transmission shaft assembly 400, the torque sensor 510 is electrically connected with the data processing device 530, and the angular velocity sensor 520 is electrically connected with the data processing device 530.
[0046] The torque sensor 510 is used for measuring the shear stress, and the angular velocity sensor 520 is used for measuring the rotating speed of the transmission shaft assembly 400, so as to calculate the shear rate. The data collected by the torque sensor 510 and the angular velocity sensor 520 are transmitted to the data processing device 530 for processing. It should be understood that the data processing device 530 can comprise a data acquisition card and a computer connected therewith.
[0047] It can be understood that the temperature control assembly 600 is arranged in the container 100, and the temperature control assembly 600 can adjust the temperature in the container 100.
[0048] The temperature control assembly 600 adjusts the temperature in the container 100 to simulate different construction conditions, and is used for testing the rheological parameters of the concrete under different working conditions.
[0049] It can be understood that the temperature control assembly 600 comprises a refrigeration element 610 and a heating element 620.
[0050] The refrigeration element 610 and the heating element 620 can both adopt the heat exchange mode to perform refrigeration or heating. In addition, the heating element 620 can also utilize the heat effect of electric current to perform heating. Preferably, the surfaces of the refrigeration element 610 and the heating element 620 can be respectively sleeved with thin film materials with good cold resistance and heat resistance, so as to protect the refrigeration element 610 and the heating element 620 from being directly contacted with the concrete. After the rheological test of the concrete is completed, the refrigeration element 610 and the heating element 620 are convenient to clean.
[0051] It can be understood that the support frame 700 and a second driving assembly are further included, the container 100 is arranged on the support frame 700, the second driving assembly is in transmission connection with the container 100 to drive the container 100 to rotate, and the side wall of the container 100 is provided with an opening 110.
[0052] When the concrete is poured into the container 100, the second driving assembly drives the container 100 to rotate and keeps the opening 110 of the container 100 in an upward state. During the rheological test of the concrete, the opening 110 also keeps in the upward state. When the rheological test of the concrete is completed, the second driving assembly drives the container 100 to rotate, so that the opening 110 faces downward, the concrete in the container 100 is poured through the opening 110, and the cleaning of the container 100 is completed.
[0053] The utility model embodiment makes the detailed explanation in combination with the drawing, but the utility model is not limited to the above -mentioned embodiment, still can make various changes in the knowledge range that the person skilled in the art has possesses without departing from the utility model's tenet under the precondition that the knowledge range that the person skilled in the art has possesses.
Claims
1. A horizontal-axis concrete rheometer, characterized in that, include: A container (100) for holding the sample to be tested; A stirring assembly (200) is mounted inside the container (100), and the rotation axis of the stirring assembly (200) is parallel to the horizontal plane; Driver component (300); A drive shaft assembly (400) has a rotation axis that is collinear with the rotation axis of the agitation assembly (200). One end of the drive shaft assembly (400) extends into the container (100) and is connected to the agitation assembly (200) in a driving connection. The other end of the drive shaft assembly (400) is connected to the drive assembly (300). A data acquisition component (500) is connected to the drive shaft assembly (400).
2. The horizontal-axis concrete rheometer according to claim 1, characterized in that, The stirring assembly (200) includes a first support (210), a second support (220), and a stirring head (230). The first support (210) and the second support (220) are respectively disposed at both ends of the container (100), and the stirring head (230) is detachably connected between the first support (210) and the second support (220).
3. The horizontal-axis concrete rheometer according to claim 2, characterized in that, Both the first support member (210) and the second support member (220) are bearings.
4. The horizontal-axis concrete rheometer according to claim 2, characterized in that, The stirring head (230) includes a shaft (231) and a plurality of plates (232). The long side of the plates (232) is parallel to the shaft (231), and one long side of the plates (232) is connected to the shaft (231). The plurality of plates (232) are distributed around the shaft (231) circumferentially.
5. The horizontal-axis concrete rheometer according to claim 4, characterized in that, The shaft (231) is provided with a boss (233), the boss (233) is arranged along the axial direction of the shaft (231), and the length of the boss (233) is equal to the long side of the plate (232). The plate (232) is connected to the boss (233).
6. The horizontal-axis concrete rheometer according to claim 1, characterized in that, The drive assembly (300) includes a motor (310), a coupling (320), and a driver (330). The motor (310) is connected to the transmission shaft assembly (400) via the coupling (320). The driver (330) is electrically connected to the motor (310) and is used to control the motor (310).
7. The horizontal-axis concrete rheometer according to claim 1, characterized in that, The data acquisition component (500) includes a torque sensor (510), an angular velocity sensor (520), and a data processing device (530). The torque sensor (510) and the angular velocity sensor (520) are both disposed on the drive shaft assembly (400). The torque sensor (510) is electrically connected to the data processing device (530), and the angular velocity sensor (520) is electrically connected to the data processing device (530).
8. The horizontal-axis concrete rheometer according to claim 1, characterized in that, It also includes a temperature control component (600), which is disposed inside the container (100) and is capable of adjusting the temperature inside the container (100).
9. The horizontal-axis concrete rheometer according to claim 8, characterized in that, The temperature control component (600) includes a separate refrigeration element (610) and a heating element (620).
10. The horizontal-axis concrete rheometer according to claim 1, characterized in that, It also includes a support frame (700) and a second drive assembly, the container (100) is mounted on the support frame (700), the second drive assembly is connected to the container (100) to drive the container (100) to rotate, and the side wall of the container (100) has an opening (110).