A high-performance lightweight foam concrete performance verification device

Abstract

The utility model belongs to the technical field of concrete performance test, concretely relates to a high -performance light -duty foam concrete performance verification device, two upright column interval distribution, two parallel distribution's crossbeam solid in two upright column's top, the sliding block is along the crossbeam length direction sliding assembly between two crossbeams, is equipped with the pressurizing rod along the longitudinal extension on the sliding block, is equipped with the drive mechanism of corresponding sliding block in one end of crossbeam, the cement groove is used for holding the concrete of waiting for measuring, the cement groove sets up between two upright columns, and is opposite pressurizing rod, is equipped with the gyro wheel of corresponding concrete of waiting for measuring in the pressurizing rod lower extreme. Break through the detection limitation of existing static extrusion, realize dynamic extrusion detection through gyro wheel structure, can simulate the dynamic stress state of concrete in practical application scene, realize accurate detection to foam concrete sample strength.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete performance testing, and specifically relates to a high-performance lightweight foamed concrete performance verification device. Background Technology

[0002] High-performance lightweight foamed concrete, as a new type of building material, has advantages such as light weight and good thermal insulation performance, and has been widely used in the construction field. Therefore, verifying its strength performance is crucial to ensuring the quality of construction projects. Currently, when testing concrete under pressure, existing devices for verifying the strength of foamed concrete generally use static compression testing: that is, a fixed indenter continuously applies pressure to a specific point on the concrete sample until the sample fails, thus determining the compressive strength of the concrete. This method can only test the static bearing capacity of concrete at a single fixed location. However, in actual engineering projects, concrete components are often under dynamic stress. For example, when foamed concrete is used for road foundations or underground structure backfilling, the concrete often needs to withstand the dynamic loads of vehicle traffic. In existing testing methods, the indenter and the concrete sample are in surface contact, resulting in excessively concentrated local pressure. This fails to accurately reflect the performance degradation process of concrete under continuous dynamic loads, making it difficult to comprehensively assess the long-term reliability of the concrete.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a high-performance lightweight foamed concrete performance verification device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A performance verification device for high-performance lightweight foamed concrete, comprising: The columns are spaced apart, and two parallel beams are fixed to the top of the two columns. A slider is slidably mounted between two beams along the length of the beams. A pressure rod extending longitudinally is provided on the slider, and a driving mechanism corresponding to the slider is provided at one end of the beam. A cement trough is used to hold the concrete to be tested. The cement trough is set between the two columns and directly opposite the pressure rod. A roller corresponding to the concrete to be tested is provided at the lower end of the pressure rod.

[0006] Preferably, each of the two crossbeams is provided with a slider corresponding to both sides of the slider, and the slider extends along the length of the crossbeam.

[0007] Preferably, a drive screw corresponding to the slider is provided between the two crossbeams, and the two ends of the drive screw are rotatably connected to one of the crossbeams through bearing seats; One end of the drive screw is connected to the drive mechanism.

[0008] Preferably, the lower end of the pressure rod is hinged to a hinge plate, and at least one of the rollers is correspondingly assembled on the lower edge of the hinge plate.

[0009] Preferably, the roller is rotatably mounted on the mounting base, and the mounting base has a slot on the upper part corresponding to the hinge plate, so as to be slidably mounted on the hinge plate through the slot.

[0010] Preferably, the slot is dovetail-shaped, and correspondingly, the lower edge of the hinge plate has a matching dovetail-shaped structure.

[0011] Preferably, the hinge plate has a hinge seat in the middle, and a mounting sleeve is hinged above the hinge seat. The mounting sleeve is fitted onto the lower end of the pressure rod, and a pressure sensor corresponding to the pressure rod is provided inside the mounting sleeve.

[0012] Preferably, the cement trough is detachably fixed to the column by bolts.

[0013] Preferably, the two sides of the cement trough are made of transparent material.

[0014] Beneficial effects: It breaks through the limitations of existing static extrusion testing, and realizes dynamic extrusion testing through roller structure. It can simulate the dynamic stress state of concrete in actual application scenarios and realize accurate testing of the strength of foamed concrete samples. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein: Figure 1 This is a simplified structural diagram of the verification device in a specific embodiment of the present invention; Figure 2 This is a front view of the verification device in a specific embodiment of the present invention; Figure 3 This is a simplified cross-sectional view of the verification device in a specific embodiment of this utility model.

[0016] In the diagram: 1. Column; 2. Horizontal beam; 3. Slider; 4. Sliding bar; 5. Drive screw; 6. Pressure rod; 7. Hinge plate; 8. Mounting sleeve; 9. Assembly seat; 10. Concrete to be tested; 11. Cement tank; 12. Drive mechanism; 13. Roller; 14. Pressure sensor. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0018] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] like Figure 1-3 As shown, a high-performance lightweight foamed concrete performance verification device includes a column 1, a slider 3, and a cement tank 11. Two columns 1 are provided, which are distributed at intervals. The bottom of the column 1 is provided with a base or fixed to the ground by pre-embedded bolts. Two parallel crossbeams 2 are fixedly installed on the top of the two columns 1. The columns 1 and the crossbeams 2 together form the main support frame of the device, providing a stable support foundation for the entire performance verification device, ensuring that the device will not shake during dynamic extrusion testing, and guaranteeing the stability and accuracy of the testing work.

[0021] The slider 3 is slidably mounted between the two crossbeams 2 along the length of the crossbeam 2. A longitudinally extending pressure rod 6 is provided on the slider 3. A corresponding drive mechanism 12 is provided at one end of the crossbeam 2, allowing the slider 3 to reciprocate on the crossbeam 2. A cement trough 11 below the column 1 is used to hold the concrete 10 to be tested. The cement trough 11 is positioned between the two columns 1. A roller 13 corresponding to the concrete 10 to be tested is provided at the lower end of the pressure rod 6. The cement trough 11 is directly opposite the pressure rod 6, allowing the roller 13 to accurately position the concrete 10 within the cement trough 11. The concrete sample 10 is tested; the pressure rod 6 can be a hydraulic cylinder, which can increase the longitudinal extrusion force. Driven by the drive mechanism 12, the pressure rod 6 and the lower roller 13 realize reciprocating dynamic extrusion, forming a dynamic load on the concrete sample 10 in the cement tank 11. When the roller 13 rolls, it makes line contact with the concrete sample, which can simulate the movement trajectory of dynamic load in actual engineering (such as the driving trajectory of a vehicle on the road), realize continuous dynamic extrusion on different areas of the concrete sample, and more realistically reflect the strength performance of concrete under actual working conditions.

[0022] In an optional embodiment, two crossbeams 2 are respectively provided with sliders 4 corresponding to both sides of the slider 3. Through the cooperation of the sliders 4 and the slider 3, the sliders 4 extend along the length direction of the crossbeam 2, thereby limiting the travel trajectory of the slider 3 and ensuring that the slider 3 always maintains linear motion when driving the roller 13 to perform dynamic compression. A drive mechanism 12 corresponding to the slider 3 is provided at one end of the crossbeam 2. Specifically, a drive screw 5 corresponding to the slider 3 is provided between the two crossbeams 2. The two ends of the drive screw 5 are rotatably connected to one of the crossbeams 2 through bearing seats. One end of the drive screw 5 is connected to the drive mechanism 12, which is a stepper motor, so that the slider 3 can be driven by the screw transmission.

[0023] In another optional embodiment, a hinge plate 7 is hinged to the lower end of the pressure rod 6, and at least one roller 13 is correspondingly assembled on the lower edge of the hinge plate 7. The hinge plate 7 allows the roller 13 to adaptively adjust according to the flatness of the concrete surface 10 being tested: during dynamic extrusion, if there are minor protrusions or depressions on the concrete sample surface, the hinge plate 7 can rotate slightly around the hinge point, causing the roller 13 to roll in contact with the sample surface, ensuring that the roller 13 always maintains stable contact with the concrete surface, thus guaranteeing the continuity and uniformity of dynamic extrusion.

[0024] Furthermore, the roller 13 is rotatably mounted on the mounting base 9. The lower part of the mounting base 9 is used for assembling the roller 13. The main shaft of the roller 13 is vertically aligned with the horizontal slide rail. The mounting base 9 has a corresponding slot for the hinge plate 7, which allows the roller to slide onto the hinge plate 7. This allows the number and distribution of the roller 13 to be adjusted in a detachable manner according to the dynamic detection requirements, enabling multiple rollers 13 to be dynamically compressed synchronously to simulate multi-wheel vehicle loads. The mounting base 9 has corresponding compression bolts for the slots, which are used to compress the hinge plate 7 for fixation.

[0025] Furthermore, the slot is dovetail-shaped, and correspondingly, the lower edge of the hinge plate 7 has a matching dovetail-shaped structure. The dovetail-shaped structure ensures that the mounting base 9 is more stable when sliding on the hinge plate 7, avoiding the situation where the mounting base 9 falls off or shifts due to the force on the roller 13 during dynamic compression; at the same time, the dovetail-shaped structure facilitates the quick installation and removal of the mounting base 9.

[0026] A hinged seat is provided in the middle of the hinged plate 7, and an installation sleeve 8 is hinged above the hinged seat. The installation sleeve 8 is adapted to the force-applying rod and is correspondingly sleeved on the lower end of the pressure rod 6. A pressure sensor 14 corresponding to the pressure rod 6 is provided in the installation sleeve 8. The pressure sensor 14 is used to monitor the pressure changes in the dynamic extrusion process in real time. The user can adjust the pressure output of the pressure rod 6 or the sliding speed of the slider 3 in real time according to the feedback data to ensure that the dynamic extrusion parameters meet the testing standards. At the same time, the pressure data can be automatically stored, which is convenient for subsequent analysis of the dynamic change law of concrete strength performance (such as the attenuation curve of concrete strength under different dynamic loads), providing more comprehensive data support for concrete performance evaluation.

[0027] In another optional embodiment, the cement trough 11 is fixed to the column 1 in a detachable manner by bolts, which makes it easy to replace the cement trough 11 of different sizes according to the specifications of the concrete sample. The two sides of the cement trough 11 are made of transparent material, which allows for direct observation of the changes in the concrete sample during dynamic extrusion. It can capture the entire process of concrete from being stressed to being gradually damaged, providing an intuitive basis for analyzing the dynamic strength characteristics and damage mechanism of concrete.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A performance verification device for high-performance lightweight foamed concrete, characterized in that, include: The columns are spaced apart, and two parallel beams are fixed to the top of the two columns. A slider is slidably mounted between two beams along the length of the beams. A pressure rod extending longitudinally is provided on the slider, and a driving mechanism corresponding to the slider is provided at one end of the beam. A cement trough is used to hold the concrete to be tested. The cement trough is set between the two columns and directly opposite the pressure rod. A roller corresponding to the concrete to be tested is provided at the lower end of the pressure rod.

2. The high-performance lightweight foamed concrete performance verification device according to claim 1, characterized in that, Each of the two crossbeams is provided with a slider corresponding to both sides of the slider, and the slider extends along the length of the crossbeam.

3. The high-performance lightweight foamed concrete performance verification device according to claim 1, characterized in that, A drive screw corresponding to the slider is provided between the two crossbeams, and the two ends of the drive screw are rotatably connected to one of the crossbeams through bearing seats; One end of the drive screw is connected to the drive mechanism.

4. The high-performance lightweight foamed concrete performance verification device according to claim 1, characterized in that, The lower end of the pressure rod is hinged to a hinge plate, and at least one of the rollers is correspondingly assembled on the lower edge of the hinge plate.

5. The high-performance lightweight foamed concrete performance verification device according to claim 4, characterized in that, The roller is rotatably mounted on the mounting base, and the mounting base has a slot on the top of the mounting base corresponding to the hinge plate, so that it can be slidably mounted on the hinge plate through the slot.

6. The high-performance lightweight foamed concrete performance verification device according to claim 5, characterized in that, The slot is dovetail-shaped, and correspondingly, the lower edge of the hinge plate has a matching dovetail-shaped structure.

7. The high-performance lightweight foamed concrete performance verification device according to claim 4, characterized in that, The hinge plate has a hinge seat in the middle, and a mounting sleeve is hinged above the hinge seat. The mounting sleeve is fitted onto the lower end of the pressure rod, and a pressure sensor corresponding to the pressure rod is provided inside the mounting sleeve.

8. The high-performance lightweight foamed concrete performance verification device according to claim 1, characterized in that, The cement trough is detachably fixed to the column by bolts.

9. The high-performance lightweight foamed concrete performance verification device according to claim 1, characterized in that, The two sides of the cement trough are made of transparent material.

Images