Self-compacting concrete testing device
By introducing a range measuring sensor into the L-box test device, the concrete depth and flow rate are automatically detected, which solves the problems of manual measurement and device attitude calibration in the prior art, and improves the detection efficiency and accuracy.
Patent Information
- Application Number
- CN202421055050.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-14
AI Technical Summary
When detecting the flow rate of self-contained concrete, the existing L-box test device needs to manually ensure the attitude level of the device, and the measurement of concrete depth is cumbersome and depends on manual steps.
A self-contained concrete testing device was designed, including an Lbox container and multiple ranging sensors. The sensor automatically detects the concrete depth and calculates the flow rate, simplifying the test process.
Automatic inspection is realized, manual operation is reduced, and the testing process is simplified, making the flow rate detection of self-contained concrete more efficient and accurate.
Smart Images
Figure CN222719372U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of concrete testing, and in particular to a self-compacting concrete testing device. Background Art
[0002] In concrete pouring projects, self-compacting concrete allows the concrete to flow freely and fill every corner and gap of the formwork without vibration. In order to ensure that the self-compacting concrete can be fully filled during pouring, the flow rate of the self-compacting concrete needs to be tested before construction.
[0003] The flow rate of self-compacting concrete can be tested by an L-box test device, which consists of a box with a rectangular cross-section, which is divided into a vertical part and a horizontal part, and the two parts are separated by a valve. A grid is provided at the bottom of the vertical part to simulate the obstruction effect of actual steel bars.
[0004] The detection process is:
[0005] In the first step, at the beginning of the test, the vertical part is filled with concrete first, and then the valve is lifted to allow the concrete to flow into the horizontal part under its own weight.
[0006] Step 2: After the flow is completed, measure and record the concrete depth H2 at the end of the horizontal part and the depth H1 of the remaining concrete in the vertical part.
[0007] The third step is to calculate the flow rate, which is equal to the ratio of depth H2 to depth H1. The closer the flow rate value is to 1, the better the fluidity of the self-compacting concrete.
[0008] There are two inconveniences in the existing L-box test device:
[0009] (1) Before the test, it is necessary to ensure that the L-box test device is placed in a horizontal position.
[0010] (2) The manual method of measuring the depth of concrete is cumbersome and requires first using a plumb bob to anchor the vertical depth of two measuring points, and then using a steel ruler to measure the length of the plumb line.
[0011] Therefore, in order to simplify the test process of the self-compacting concrete testing device, the present application provides a self-compacting concrete testing device. Utility Model Content
[0012] In order to overcome the problems existing in the related art, the present application provides a self-compacting concrete testing device, comprising: an Lbox container, and N distance measuring sensors, wherein N is an integer greater than or equal to;
[0013] The Lbox container includes a vertical box body and a horizontal box body, the bottom of the vertical box body is provided with a feed channel, the horizontal box body is provided with a working groove for material sliding, and the bottom of the feed channel is connected with the entrance of the working groove; the feed port of the vertical box body and the top of the working groove of the horizontal box body are respectively a first detection position and a second detection position, the ranging sensor is arranged in the first detection position and the second detection position, and the ranging sensor is used to detect the depth of concrete in the vertical box body and the horizontal box body.
[0014] In one embodiment, at the first detection position and the second detection position, at least two ranging sensors are arranged along the width direction of the Lbox container.
[0015] In one embodiment, it further includes a sensor fixing support;
[0016] The sensor fixing support is fixed to the side surface of the box body at the detection position, the distance measuring sensor is provided with a sensor fixing bolt, and the sensor fixing support is provided with a screw hole adapted to the sensor fixing bolt.
[0017] In one embodiment, spiral bases are provided around the bottom surface of the Lbox container;
[0018] The spiral base is provided with a base screw hole, and the bottom surface of the Lbox container is respectively provided with base bolts adapted to the base screw hole.
[0019] In one embodiment, the Lbox container is also provided with a horizontal bubble meter, and the horizontal bubble meter is arranged on the top surface of the horizontal box body.
[0020] In one embodiment, a bubble meter fixing bolt is further provided on the Lbox container, and the bubble meter fixing bolt is adapted to the screw hole on the horizontal bubble meter.
[0021] In one embodiment, it also includes a discharge baffle;
[0022] The vertical box is also provided with a partition slide;
[0023] The partition slide is vertically arranged on the inner wall of the vertical box body, and the discharge partition is used to separate the horizontal box body.
[0024] In one embodiment, the discharge partition further includes a partition handle;
[0025] The partition handle is arranged on the plate edge of the discharge partition, and the partition handle is used to pull the discharge partition.
[0026] The technical solution provided by this application may have the following beneficial effects:
[0027] In the present application, two detection positions capable of automatically detecting the depth of concrete are provided on the vertical box and the horizontal box of the Lbox container. After the concrete to be tested is filled, the concrete to be tested flows from the vertical box to the horizontal box. After the test time is reached, the concrete depth in the vertical box and the concrete depth in the horizontal box need to be detected respectively. The distance measuring sensor in the detection position automatically calculates the flow rate of the concrete to be tested according to the average value of the concrete depth value detected in the first detection position and the average value of the concrete depth value detected in the second detection position.
[0028] The self-compacting concrete testing device provided in the present application does not require manual measurement, recording and calculation by test personnel, and the test process is simpler than that of existing self-compacting concrete testing devices.
[0029] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.
[0031] Figure 1 A schematic diagram of the three-dimensional structure of the self-compacting concrete testing device shown in an embodiment of the present application;
[0032] Figure 2 It is a flow chart of the test method of the self-compacting concrete test device shown in the embodiment of the present application;
[0033] Figure 3 A schematic diagram of the three-dimensional structure of the sensor fixing support of the device shown in the embodiment of the present application;
[0034] Figure 4 A schematic diagram of the three-dimensional structure of the spiral base of the device shown in the embodiment of the present application;
[0035] Figure 5 A schematic diagram of the three-dimensional structure of the horizontal bubble meter of the device shown in the embodiment of the present application;
[0036] Description of the accompanying drawings: vertical box body 1, horizontal box body 2, distance measuring sensor 3, sensor fixing support 30, sensor fixing bolt 31, spiral base 4, base bolt 40, base screw hole 41, horizontal bubble meter 5, discharge partition 6, partition handle 61. DETAILED DESCRIPTION
[0037] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0038] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0039] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0040] In order to automate the detection process of the Lbox self-compacting concrete method, an embodiment of the present application provides a self-compacting concrete testing device.
[0041] Figure 1 It is a schematic diagram of the three-dimensional structure of the self-compacting concrete testing device shown in the embodiment of the present application.
[0042] like Figure 1 As shown, the self-compacting concrete testing device includes an Lbox container and N distance measuring sensors 3, where N is an integer greater than or equal to 2.
[0043] Specifically, the Lbox container is composed of a vertical box body 1 and a horizontal box body 2, and the shape of the long axis section thereof is the shape of the letter "L".
[0044] like Figure 1 As shown, the bottom of the vertical box body 1 is provided with a feed channel, and the horizontal box body 2 is provided with a working groove for materials to slide, and the bottom of the feed channel is connected to the inlet of the working groove.
[0045] Furthermore, in order to simulate the steel bar resistance during concrete pouring, a grille is provided at the bottom of the vertical box 1, and the grille is perpendicular to the flow direction of the concrete to be tested.
[0046] Furthermore, the feed port of the vertical box 1 and the top of the working groove of the horizontal box 2 are respectively the first detection position and the second detection position, and the ranging sensor 3 is arranged in the first detection position and the second detection position, and the ranging sensor 3 is used to detect the depth of concrete in the vertical box 1 and the horizontal box 2.
[0047] It should be noted that the first detection position and the second detection position are not specific physical structures, but virtual indication positions, and the indication detection direction is the direction toward the concrete to be tested.
[0048] In the LBOX test method, the detection position is generally set on the top surface of the vertical box 1 and the top surface of the horizontal box 2 at a distance of 1200mm-400mm from the vertical box.
[0049] Therefore, in the embodiment of the present application, the position of the detection position is as follows: Figure 1 As shown, the first detection position is set on the top surface of the vertical box body 1; the second detection position is set on the top surface of the horizontal box body 2, located on a side opposite to the vertical box body 1.
[0050] In order to facilitate the rapid release and blockage of concrete discharge in the vertical box 1 during the test, the self-compacting concrete testing device is also provided with a discharge baffle 6 .
[0051] Specifically, the vertical box body 1 is further provided with a partition slide; the partition slide is vertically arranged on the inner wall of the vertical box body 1, and the discharge partition 6 is used to separate the horizontal box body 2.
[0052] Furthermore, the discharge partition 6 also includes a partition handle 61; the partition handle 61 is arranged on the plate edge of the discharge partition 6, and the partition handle 61 is used to pull the discharge partition 6.
[0053] In the embodiment of the present application, when the flow of concrete in the Lbox container is completed, that is, when it is time to test the depth of the concrete, the distance measuring sensor 3 located at the detection position can automatically detect the depth of the concrete in the Lbox container.
[0054] Specifically, the distance measuring sensor 3 is an ultrasonic distance measuring sensor 3 , and other types of distance measuring sensors 3 , such as a photoelectric distance measuring sensor 3 , may also be used, which is not limited here.
[0055] In the embodiments of the present application, Figure 1As shown, three distance measuring sensors 3 are arranged in each detection direction and are arranged in sequence along the width direction of the Lbox container.
[0056] Further, such as Figure 3 As shown, a sensor fixing bolt 31 is provided on the distance measuring sensor 3, a sensor fixing support 30 is fixed to the side wall of the Lbox container, and the sensor fixing bolt 31 is screwed into the sensor fixing support 30 to install the distance measuring sensor 3.
[0057] In another embodiment, before the test begins, it is necessary to ensure that the Lbox container is placed horizontally and cannot be tilted. Therefore, the self-compacting concrete testing device described in the embodiment of the present application can also be provided with the following Figure 5 The level bubble gauge 5 shown and Figure 4 The spiral base 4 is shown.
[0058] In the embodiment of the present application, the level bubble gauge 5 is provided with a screw hole, and the top surface of the horizontal box 2 is also provided with a bubble gauge fixing bolt. The level bubble gauge 5 is screwed into the bubble gauge fixing bolt through its own screw hole and fixed.
[0059] In the embodiment of the present application, whether the Lbox container is placed horizontally is determined by whether the bubble of the level bubble gauge 5 is offset from the central circle of the level bubble gauge 5 .
[0060] Furthermore, in order to adjust the tilted Lbox container back to a horizontal position, the bottom surface of the self-compacting concrete testing device described in the embodiment of the present application is respectively provided with spiral bases 4 around it, such as Figure 4 shown.
[0061] Specifically, the spiral base 4 is provided with a base screw hole 41, and the bottom surface of the Lbox container is provided with base bolts 40 adapted to the base screw hole 41. The length of the base bolts 40 screwed into the base screw hole 41 is adjusted by rotating the spiral base 4, thereby adjusting the depth of the spiral base 4. If the Lbox container is tilted, the bubble is offset to the tilted end, and the spiral base 4 at the downward tilted end is raised, or the spiral base 4 at the upward tilted end is lowered until the bubble is not offset.
[0062] The test method of the self-compacting concrete test device described in the embodiment of the present application is as follows: Figure 2 As shown, the following steps are included:
[0063] S1. Clean the Lbox container and insert the discharge partition into the partition chute;
[0064] S2. Adjust the spiral base of the Lbox container according to the horizontal bubble gauge;
[0065] S3, filling the concrete to be tested into the vertical box and leveling the surface of the concrete to be tested;
[0066] S4, pull out the material partition to release the concrete to be tested;
[0067] S5. Acquire the concrete depth data detected by the distance measuring sensor, and calculate the flow rate according to the concrete depth data.
[0068] Specifically, the calculation formula for the flow rate is:
[0069] S=ΔH 1 / ΔH2
[0070] In the embodiment of the present application, ΔH1 is the average value of the concrete depth values detected by the three distance measuring sensors 3 in the first detection orientation, and ΔH2 is the average value of the concrete depth values detected by the three distance measuring sensors 3 in the second detection orientation.
[0071] Furthermore, the data detected by the ranging sensor 3 is the straight-line measured distance from the ranging sensor 3 to the plane directly below the detection position. The straight-line calibrated distance from the ranging sensor 3 to the bottom of the Lbox container is pre-input, and the concrete depth value is equal to the straight-line calibrated distance minus the straight-line measured distance.
[0072] In the embodiment of the present application, the distance measuring sensor 3 is communicatively connected to the system end, and after the system end obtains the depth data of each distance measuring sensor 3, it outputs the flow rate data.
[0073] Without limitation, the system end may be a wired connection or a wireless connection, a desktop end or a server end, and a local program or a web page or a small program connected to a third-party server.
[0074] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated again here.
[0075] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A self-compacting concrete testing device, characterized in that: include: An Lbox container, and N ranging sensors (3), wherein N is an integer greater than or equal to 2; The Lbox container comprises a vertical box body (1) and a horizontal box body (2); a feed channel is arranged at the bottom of the vertical box body (1); a working groove for sliding materials is arranged at the horizontal box body (2); the bottom of the feed channel is connected to the inlet of the working groove; the feed port of the vertical box body (1) and the top of the working groove of the horizontal box body (2) are respectively a first detection position and a second detection position; the distance sensor (3) is arranged in the first detection position and the second detection position; the distance sensor (3) is used to detect the depth of concrete in the vertical box body (1) and the horizontal box body (2).
2. A self-compacting concrete testing device according to claim 1, characterized in that: At least two distance measuring sensors (3) are arranged along the width direction of the Lbox container in the first detection position and the second detection position.
3. A self-compacting concrete testing device according to claim 2, characterized in that: Also includes a sensor fixing support (30); The sensor fixing support (30) is fixed to the side surface of the box body at the detection orientation, the distance measuring sensor (3) is provided with a sensor fixing bolt (31), and the sensor fixing support (30) is provided with a screw hole adapted to the sensor fixing bolt (31).
4. A self-compacting concrete testing device according to claim 1, characterized in that: The bottom surface of the Lbox container is respectively provided with spiral bases (4) around it; The spiral base (4) is provided with a base screw hole (41), and base bolts (40) adapted to the base screw hole (41) are respectively provided around the bottom surface of the Lbox container.
5. A self-compacting concrete testing device according to claim 1, characterized in that: The Lbox container is also provided with a horizontal bubble meter (5), and the horizontal bubble meter (5) is arranged on the top surface of the horizontal box body (2).
6. A self-compacting concrete testing device according to claim 5, characterized in that: The Lbox container is also provided with a bubble meter fixing bolt, and the bubble meter fixing bolt is adapted to the screw hole on the horizontal bubble meter (5).
7. A self-compacting concrete testing device according to claim 1, characterized in that: It also includes a discharge baffle (6); The vertical box (1) is also provided with a partition slide groove; The partition slide groove is vertically arranged on the inner wall of the vertical box body (1), and the discharge partition (6) is used to separate the horizontal box body (2).
8. A self-compacting concrete testing device according to claim 7, characterized in that: The discharge partition (6) also includes a partition handle (61); The partition handle (61) is arranged on the plate edge of the discharge partition (6), and the partition handle (61) is used to pull the discharge partition (6).