A device for testing the thickness of the floating slurry of low-flow concrete
Patent Information
- Application Number
- CN202522264226.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2025-08-19
- Filing Date
- 2025-10-27
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0002]在现代混凝土预制构件的工业化生产中，混凝土的匀质性直接决定了构件的最终质量，混凝土浇筑成型后，其表面浮浆层厚度作为反映混凝土匀质性的关键指标，对构件性能具有重要影响，以风电混塔、盾构管片等大型预制构件为例，若浮浆层厚度超出合理范围，将导致构件内部强度与密度分布不均，引发收缩应力异常，显著增加浮浆层开裂风险，严重威胁构件的结构安全与使用寿命，目前，行业内针对低流态混凝土浮浆厚度的检测手段较为匮乏，传统检测方法多依赖人工经验判断，不仅检测效率低下，而且受操作人员主观因素影响大，检测结果误差明显，难以满足工业化生产中对混凝土质量实时检测、快速反馈的需求，因此，研发一种智能化、操作简便的浮浆厚度检测装置，对提升预制构件生产质量与效率具有重要意义
本实用新型通过设置水平板，设于水平板上的连接杆，设于连接杆上的数显控制器，以及设于水平板上的凸起和高精度应力感应器，实现浮浆厚度的快速、精准检测，为混凝土生产工艺的及时调整提供可靠数据支持，满足工业化生产的质量控制要求，结构设计精巧，操作简便高效，装置整体结构紧凑，各部件连接稳固，组装拆卸方便；采用人性化设计，生产人员经简单培训即可熟练操作，有效降低人力成本与操作难度，且检测精准快速，数据可靠直观，通过高灵敏度应力感应器与智能数显系统的协同工作，可快速、准确地捕捉浮浆层与骨料层界面，提示人工读取凸起上的浮浆厚度数值，检测效率较传统方法大幅提升，为生产决策提供可靠依据，适应性强，应用范围广泛，可调节高度的凸起设计，使装置能够适配不同工况下的浮浆厚度检测需求，适用于多种类型低流态混凝土的质量检测，显著提升装置的通用性与实用性，具有安全、适用等特点，有很好的推广和实用价值，广泛的推广应用后会产生良好的经济效益。
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Figure CN224838760U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete testing technology, and in particular to a device for testing the thickness of laitance in low-flow concrete. Background Technology
[0002] In the industrial production of modern precast concrete components, the homogeneity of concrete directly determines the final quality of the component. After the concrete is poured and formed, the thickness of the surface laitance layer is a key indicator reflecting the homogeneity of the concrete and has a significant impact on the performance of the component. Taking large precast components such as wind turbine towers and tunnel segments as examples, if the laitance layer thickness exceeds the reasonable range, it will lead to uneven distribution of strength and density within the component, causing abnormal shrinkage stress, significantly increasing the risk of laitance layer cracking, and seriously threatening the structural safety and service life of the component. At present, there is a lack of detection methods for the laitance thickness of low-flow concrete in the industry. Traditional detection methods mostly rely on manual experience, which is not only inefficient but also greatly affected by the subjective factors of the operators, resulting in significant errors in the detection results. It is difficult to meet the needs of real-time detection and rapid feedback of concrete quality in industrial production. Therefore, the development of an intelligent and easy-to-operate laitance thickness detection device is of great significance for improving the production quality and efficiency of precast components. Utility Model Content
[0003] The purpose of this invention is to provide a device for testing the thickness of laitance in low-flow concrete, enabling rapid and accurate detection of laitance thickness, providing reliable data support for timely adjustments to concrete production processes, and meeting the quality control requirements of industrial production.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A device for testing the thickness of low-flow concrete laitance includes a horizontal plate, a connecting rod mounted on the horizontal plate, and a digital display controller mounted on the connecting rod. The two ends of the connecting rod are welded and fixed to the center of the horizontal plate and the bottom of the digital display controller, respectively. Two handles are symmetrically positioned on the upper sides of the connecting rod. Multiple protrusions are evenly distributed on the side of the horizontal plate away from the connecting rod, and evenly distributed graduation lines are provided along the axial direction on each protrusion. A high-precision stress sensor is fixedly installed at the end of each protrusion away from the digital display controller. A sensing line connects the digital display controller and the high-precision stress sensor. The connecting rod is hollow, and the sensing line is integrated inside the connecting rod. Multiple positioning braces are evenly distributed around the connecting rod between the connecting rod and the horizontal plate, with both ends welded and fixed to the belly of the connecting rod and the top surface of the horizontal plate, respectively.
[0005] Furthermore, the protrusion is a screw, and the horizontal plate is provided with multiple adjustment holes. Each adjustment hole is threaded with a screw, and the screw is provided with an adjustment knob. The outer side of the adjustment knob is provided with anti-slip texture, and a locking nut is provided at the connection between the screw and the horizontal plate.
[0006] Furthermore, the horizontal plate is a rectangular plate structure.
[0007] Furthermore, the handle is a rod-shaped structure, with an anti-slip sleeve fitted on it, and one end of the handle is welded and fixed to the connecting rod.
[0008] Furthermore, the tilt angle of the positioning brace is 30 to 60 degrees.
[0009] Furthermore, the connecting rod is made of high-strength, lightweight aluminum alloy.
[0010] Compared with the prior art, this utility model has the following features and beneficial effects: This utility model achieves rapid and accurate detection of slurry thickness by using a horizontal plate, a connecting rod on the horizontal plate, a digital display controller on the connecting rod, and a protrusion and a high-precision stress sensor on the horizontal plate. This provides reliable data support for timely adjustments to concrete production processes, meeting the quality control requirements of industrialized production. The structure is ingeniously designed, simple and efficient to operate, with a compact overall structure, stable connections between components, and convenient assembly and disassembly. Its user-friendly design allows production personnel to operate it proficiently after simple training, effectively reducing labor costs and operational difficulty. Furthermore, the detection is accurate and rapid, and the data is reliable and intuitive. The coordinated operation of the sensitive stress sensor and the intelligent digital display system can quickly and accurately capture the interface between the laitance layer and the aggregate layer, prompting manual reading of the laitance thickness value on the protrusion. The detection efficiency is significantly improved compared with traditional methods, providing a reliable basis for production decisions. It is highly adaptable and has a wide range of applications. The adjustable height protrusion design allows the device to adapt to the laitance thickness detection needs under different working conditions. It is suitable for quality detection of various types of low-flow concrete, significantly improving the versatility and practicality of the device. It has the characteristics of safety and applicability, and has good promotion and practical value. Its widespread application will generate good economic benefits. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Attached reference numerals: 1. Horizontal plate; 2. Connecting rod; 3. Handle; 4. Digital display controller; 5. Positioning brace; 6. Protrusion; 7. Adjustment knob; 8. Locking nut. Detailed Implementation
[0013] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.
[0014] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.
[0015] This utility model discloses a device for testing the thickness of laitance in low-flow concrete, such as... Figure 1As shown, the device includes a horizontal plate 1, a connecting rod 2 mounted on the horizontal plate 1, and a digital display controller 4 mounted on the connecting rod 2. The horizontal plate 1 is a rectangular plate structure to ensure close contact with the concrete laitance layer. The two ends of the connecting rod 2 are welded and fixed to the center of the horizontal plate 1 and the bottom of the digital display controller 4, respectively. The connecting rod 2 has two handles 3, which are rod-shaped structures with anti-slip sleeves. The two handles 3 are symmetrically arranged on both sides of the upper part of the connecting rod 2, and one end of the handle 3 is welded and fixed to the connecting rod 2. The horizontal plate 1 has multiple protrusions 6 on the side away from the connecting rod 2. The protrusions 6 are evenly distributed on the horizontal plate 1, and their height can be flexibly adjusted according to the testing requirements. The protrusions 6 are screws. The horizontal plate 1 has multiple adjustment holes, each containing... All components are threaded with a screw rod. The outer surface of the screw rod has evenly distributed graduation lines along the axial direction, with a graduation accuracy of 0.5mm, facilitating precise reading of the laitance thickness. A high-precision stress sensor is fixedly installed at the end of the screw rod furthest from the digital display controller 4. An adjustment knob 7 is provided on the screw rod, with anti-slip texture on its outer side for easy manual adjustment by the operator. A locking nut 8 is provided at the connection between the screw rod and the horizontal plate 1. After the height of the protrusion 6 is adjusted to the appropriate position, the locking nut 8 can be tightened to fix the screw rod, preventing displacement during testing and ensuring the accuracy of the test results. Before testing, the operator estimates the laitance layer thickness range based on the type of concrete component to be tested, past production experience, and the condition of the concrete on site. For each protrusion 6, rotate the adjusting knob 7 to move the screw up and down within the adjusting hole, adjusting the height of protrusion 6 to a position slightly greater than the estimated maximum thickness of the laitance layer. After adjustment, read and record the initial height of each protrusion 6 using the scale markings on the level plate 1. Then, tighten the locking nut 8 to fix the position of protrusion 6. After completing the above operations, the device can be used to test the laitance thickness according to the normal testing procedure. During the testing process, if it is found that the height of protrusion 6 does not meet the testing requirements, the locking nut 8 can be loosened and the height of protrusion 6 readjusted until a suitable testing state is achieved. The adjustable protrusion 6 design allows the testing device to adapt to the testing needs of low-flow concrete with different production scenarios and different laitance thickness ranges, regardless of the thickness of the laitance. Whether it's a single layer or a thicker layer of laitance due to special processes or materials, the height of the protrusion 6 can be flexibly adjusted to ensure that the stress sensing point can accurately contact the interface between the laitance layer and the gravel layer. This enables precise detection of the laitance thickness, significantly improving the versatility and adaptability of the device. A sensing line is provided between the digital display controller 4 and the high-precision stress sensor. The connecting rod 2 is a hollow rod made of high-strength, lightweight aluminum alloy, ensuring stable transmission of vertical forces and effectively reducing interference from rod deformation on the detection results. The sensing line is integrated inside the connecting rod 2, enabling sensitive capture of the compressive stress mutation signal generated when the protrusion 6 contacts the gravel. The data is transmitted to the digital display controller 4 via the sensing line. The digital display controller 4 is equipped with a high-definition LCD screen.Equipped with one-click zeroing, real-time data display, and automatic storage functions, the device allows operators to quickly obtain test data through an intuitive digital interface, eliminating the need for complex calculations. Multiple positioning braces 5 are evenly distributed around the connecting rod 2 and the horizontal plate 1, with an inclination angle of 30-60 degrees. The two ends of each positioning brace 5 are welded and fixed to the belly of the connecting rod 2 and the top surface of the horizontal plate 1, respectively. Through stress sensing and digital display technology, the device enables rapid and accurate detection of slurry thickness, providing reliable data support for timely adjustments to concrete production processes and meeting the quality control requirements of industrialized production. During use, after the concrete pouring and vibration processes are completed, the horizontal plate 1 of the testing device should be placed stably. Apply pressure to the laitance layer on the concrete surface; activate the digital display controller 4 and complete the zeroing operation; the operator holds the handle 3 with both hands and applies pressure vertically downwards at a constant rate, simultaneously observing the changes in stress values displayed on the digital display controller 4; when the stress sensor contacts hard aggregates such as crushed stone inside the concrete, the compressive stress value will undergo a significant abrupt change, and the digital display controller 4 will automatically record the abrupt change point and issue a detection completion prompt; lift the testing device, and by reading the scale value of the insertion depth of each protrusion 6, the laitance thickness data of the corresponding detection point can be obtained; compare the test results with the preset standard value, and if the laitance thickness exceeds the allowable range, adjust the concrete mix ratio or improve the construction process in a timely manner to ensure that the quality of the concrete component meets the standards.
[0016] This invention achieves rapid and accurate detection of laitance thickness by using a horizontal plate, a connecting rod on the horizontal plate, a digital display controller on the connecting rod, and a protrusion and a high-precision stress sensor on the horizontal plate. This provides reliable data support for timely adjustments to concrete production processes, meeting the quality control requirements of industrialized production. The device features a sophisticated structural design, simple and efficient operation, a compact overall structure, stable connections between components, and convenient assembly and disassembly. Its user-friendly design allows production personnel to operate it proficiently after simple training, effectively reducing labor costs and operational difficulty. The detection is accurate and rapid, and the data is reliable and intuitive. Through the collaborative work of the high-sensitivity stress sensor and the intelligent digital display system, the interface between the laitance layer and the aggregate layer can be quickly and accurately captured, prompting manual reading of the laitance thickness value on the protrusion. The detection efficiency is significantly improved compared to traditional methods, providing a reliable basis for production decisions. It is highly adaptable and has a wide range of applications. The adjustable-height protrusion design allows the device to adapt to the laitance thickness detection needs under different working conditions, making it suitable for quality detection of various types of low-flow concrete, significantly improving the device's versatility and practicality.
[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A device for testing the thickness of laitance in low-flow-state concrete, characterized in that: The device includes a horizontal plate (1), a connecting rod (2) mounted on the horizontal plate (1), and a digital display controller (4) mounted on the connecting rod (2). The two ends of the connecting rod (2) are welded and fixed to the center of the horizontal plate (1) and the bottom of the digital display controller (4), respectively. The connecting rod (2) has two handles (3) symmetrically positioned on both sides of its upper part. Multiple protrusions (6) are evenly distributed on the side of the horizontal plate (1) away from the connecting rod (2). The upper axial direction is provided with uniformly distributed scale lines. The end of the protrusion (6) away from the digital display controller (4) is fixedly installed with a high-precision stress sensor. A sensing line is provided between the digital display controller (4) and the high-precision stress sensor. The connecting rod (2) is a hollow rod. The sensing line is integrated inside the connecting rod (2). Multiple positioning braces (5) are provided between the connecting rod (2) and the horizontal plate (1). The positioning braces (5) are evenly distributed around the connecting rod (2). The two ends of the positioning braces are welded and fixed to the belly of the connecting rod (2) and the top surface of the horizontal plate (1) respectively.
2. The device for testing the thickness of low-flow-state concrete laitance according to claim 1, characterized in that: The protrusion (6) is a screw, and the horizontal plate (1) is provided with multiple adjustment holes. The screw is threadedly connected to the adjustment holes. The screw is provided with an adjustment knob (7). The outer side of the adjustment knob (7) is provided with anti-slip texture. The connection between the screw and the horizontal plate (1) is provided with a locking nut (8).
3. The device for testing the thickness of low-flow-state concrete laitance according to claim 2, characterized in that: The horizontal plate (1) is a rectangular plate structure.
4. The device for testing the thickness of low-flow-state concrete laitance according to claim 1, characterized in that: The handle (3) is a rod-shaped structure, and an anti-slip sleeve is fitted on the handle (3). One end of the handle (3) is welded and fixed to the connecting rod (2).
5. The device for testing the thickness of low-flow-state concrete laitance according to claim 1, characterized in that: The positioning brace (5) has an inclination angle of 30 to 60 degrees.
6. A device for testing the thickness of low-flow-state concrete laitance according to any one of claims 1 to 5, characterized in that: The connecting rod (2) is made of high-strength, lightweight aluminum alloy.