A test apparatus for testing the effect of cement mortar repair under dynamic water conditions

Abstract

This utility model discloses a test device for evaluating the repair effect of cement mortar under dynamic water conditions. It belongs to the technical field of cement mortar testing equipment and includes a dynamic water control component. This component comprises a water supply tank and a pipeline connected to the water supply tank, with a pipeline pump and flow controller mounted on the pipeline. An underwater flushing test component is also included, comprising a water tank, a grouting tank, and a robotic arm. The robotic arm is positioned on the water tank to control the suspension position of the grouting tank within the tank. The pipeline is located on one side of the water tank and provides a controllable water flow through the flow controller. This utility model, through the coordinated use of the dynamic water control component and the underwater flushing test component, realistically simulates the actual on-site repair conditions of cement mortar, improving the authenticity and reliability of the test.

Description

Technical Field

[0001] This utility model belongs to the technical field of cement mortar testing equipment, specifically relating to a testing device for the repair effect of cement mortar under dynamic water conditions. Background Technology

[0002] In underwater engineering construction, structures such as dams, bridge piers, and underwater pipelines often require cement mortar repairs to ensure their stability and durability under water erosion conditions. However, current technologies lack evaluation devices for the repair effectiveness of cement mortar under dynamic water conditions, and there is a general lack of testing methods for the performance of repair materials under different flow velocities, making it difficult to accurately assess repair quality. The evaluation of underwater cement mortar repair effectiveness mainly reflects the mass loss rate of the mortar after it has been submerged in water for a certain period. Currently, the "Test Procedure for Underwater Non-Dispersible Concrete" (DL / T5117-2000) and the "Technical Requirements for Flocculants in Underwater Non-Dispersible Concrete" (GB / T 37990-2019) primarily test the mass loss rate of cement mortar in still water environments, failing to consider the impact of dynamic water flow on the repair effect in actual repairs. This deficiency makes it impossible to accurately evaluate the repair effectiveness of cement mortar in practical applications under dynamic water conditions.

[0003] Existing conventional weighing methods for calculating cement mortar mass loss rates are cumbersome and time-consuming. Because water cannot be completely drained from the mortar container, significant errors occur in the test results, causing considerable inconvenience in evaluating the effectiveness of underwater cement mortar repairs. Therefore, there is an urgent need for a new type of testing device that can simplify the testing process under dynamic water conditions, improving the accuracy and reliability of the evaluation. Utility Model Content

[0004] The primary objective of this invention is to provide a testing device for assessing the repair effect of cement mortar under dynamic water conditions. By combining a dynamic water control component and an underwater scouring test component, the device realistically simulates the actual on-site repair conditions of cement mortar, thereby improving the authenticity and reliability of the test.

[0005] The purpose of this utility model is achieved as follows: a test device for evaluating the repair effect of cement mortar under dynamic water conditions, comprising:

[0006] A water flow control component, wherein the water flow control component is provided with a water supply tank and a pipe connected to the water supply tank, and a pipe pump and a flow controller are provided on the pipe;

[0007] An underwater scour testing assembly includes a water tank, a grouting tank, and a robotic arm. The robotic arm is positioned on the water tank and is used to control the suspension position of the grouting tank within the tank.

[0008] The pipe is installed on one side of the water tank and provides a controllable water flow through the flow controller.

[0009] Furthermore, the pipe is connected to the water tank via an "E" type PVC diverter.

[0010] Furthermore, the water tank is a cuboid structure with an open top, and the water tank is equipped with a water outlet pipe, which is located at the end opposite to the "E"-shaped PVC diverter.

[0011] Furthermore, the robotic arm includes a column, a rotating platform disposed on the top of the column, and a horizontal arm disposed at the other end of the rotating platform, with the grouting bucket suspended at the other end of the horizontal arm.

[0012] Furthermore, a steel strand is provided at the end of the cross arm, and a hook is provided at the end of the steel strand. The grouting bucket is connected to the hook via a handle.

[0013] Furthermore, the grouting bucket has a woven structure, and the woven structure is a 50-mesh structure.

[0014] Furthermore, when the grouting bucket is in the water tank, the highest point of the grouting bucket is located above the "E"-shaped PVC diverter.

[0015] Furthermore, the experimental specimens placed inside the grouting bucket are several concrete blocks.

[0016] The beneficial effects of this utility model are reflected in:

[0017] In this invention, by combining the dynamic water control component and the underwater flushing test component, the water flow velocity in the water tank is stably controlled, creating an adjustable dynamic water environment. This provides reliable equipment support for studying the effect of different flow velocities on cement mortar repair, realistically simulating the actual on-site repair conditions of cement mortar, and improving the authenticity and reliability of the test. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0020] Figure 2 This is a schematic diagram of the underwater scouring test assembly of this utility model;

[0021] Figure 3 This is a schematic diagram of the robotic arm structure of this utility model.

[0022] In the attached diagram, 1-water supply tank, 2-pipeline pump, 3-flow controller, 4-pipeline, 5-"E" type PVC diverter, 6-water tank, 7-robotic arm, 8-grouting tank, 9-touch display screen, 10-power switch, 11-power indicator light, 12-outlet pipe, 301-column, 302-rotating table, 303-horizontal arm, 304-steel strand, 305-hook, 306-handle, 307-concrete block. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0025] Reference Figures 1-3 A test apparatus for evaluating the repair effect of cement mortar under dynamic water conditions, comprising:

[0026] A water flow control component, wherein the water flow control component is provided with a water supply tank 1, a pipe 4 connected to the water supply tank 1, and a pipe pump 2 and a flow controller 3 are provided on the pipe 4;

[0027] An underwater scour test assembly includes a water tank 6, a grouting tank 8, and a robotic arm 7. The robotic arm 7 is positioned on the water tank 6 and is used to control the suspension position of the grouting tank 8 within the water tank 6.

[0028] The pipe 4 is installed on one side of the water tank 6 and provides a controllable water flow through the flow controller 3.

[0029] By coordinating the dynamic water control components and underwater flushing test components, stable control of the water flow velocity in water tank 6 is achieved, creating an adjustable dynamic water environment. This provides reliable equipment support for studying the effect of different flow velocities on cement mortar repair, realistically simulating the actual on-site repair conditions of cement mortar, and improving the authenticity and reliability of the test. Specifically, through the water supply tank 1 connected to the water tank 6 via pipe 4, and under the control of the pipeline pump 2 and flow controller 3 installed on pipe 4, controllable water flow is achieved in the water tank 6, thereby providing dynamic water flow for testing the cement slurry in the grouting tank 8. Optionally, pipe 4 is a 50mm diameter PVC pipe, pipeline pump 2 is an IRG vertical pipeline centrifugal pump with a power of 0.75KW, and flow controller 3 is a Zhong'an DN10 type flow controller.

[0030] Preferably, the pipe 4 and the water tank 6 are connected by an "E" type PVC diverter 5.

[0031] A constant and adjustable dynamic water flow control technology. This technology, utilizing pipeline pumps, flow controllers, and PVC pipes, enables precise control of water flow velocity and volume, simulating various dynamic water conditions from low to high speeds in experimental setups. This dynamic water flow regulation system can meet the needs of various water flow conditions in practical engineering projects and is one of the core technical points of this patent. As a preferred embodiment, other types of pump systems (such as variable frequency pumps) can be used to adjust different water flow velocities. Alternatively, valves and bypass pipes can be used for fine control of the water flow, or a propeller simulator can be used to generate dynamic water conditions.

[0032] pass Figure 1 In order to ensure that the pipe 4 provides a better uniform water flow in the water tank 6 to meet the test requirements, the connection between the pipe 4 and the water tank 6 is made by setting an "E" type PVC diverter 5 to increase the uniformity of water flow from the pipe 4 in the water tank 6. As a preferred method, the "E" type PVC diverter 5 is 300mm away from the bottom of the water tank 6.

[0033] Preferably, the water tank 6 is a cuboid structure with an open top, and the water tank 6 is provided with a water outlet pipe, which is located at the end opposite to the "E" type PVC diverter 5.

[0034] Understandably, in order to enable the robotic arm 7 to carry the grouting bucket 8 to soak in the water tank 6 and move the water flow, the water tank 6 is a cuboid structure with an open top.

[0035] Preferably, the robotic arm 7 includes a column 301, a rotating platform 302 disposed on the top of the column 301, and a horizontal arm 303 disposed at the other end of the rotating platform 302, and the grouting tank 8 is suspended at the other end of the horizontal arm 303.

[0036] As a preferred approach, an intelligent robotic arm equipped with multi-point sensors can be used. This arm can not only accurately position the grouting container, but also monitor changes in water flow rate and pressure in real time, and dynamically adjust experimental conditions through sensor feedback.

[0037] Preferably, the end of the cross arm 303 is provided with a steel strand 304, and the end of the steel strand 304 is provided with a hook 305. The grouting bucket 8 is connected to the hook 305 via a handle 306.

[0038] A column 301 is installed on one side of the water tank 6. A rotating platform 302 is installed on the top of the column 301. A horizontal arm 303 is connected to the output end of the rotating platform 302. The rotating platform 302 has a self-rotating function. In other words, the center of the rotating platform 302 is connected to a rotating motor, which is vertically installed on the top of the column 301. A steel strand 304 is slidably installed on the horizontal arm 303. A hook 305 is connected to the end of the steel strand 304. The grouting container 8 is fixed in the water tank 6 by the hook 305.

[0039] The combination of a robotic arm and a grouting container enables automatic and precise positioning of the grouting container's scouring location and facilitates underwater scouring tests. The automated operation of the robotic arm ensures the consistency and repeatability of the test position for each instance, a crucial technical aspect for reducing errors and improving data accuracy during experiments.

[0040] Preferably, the grouting tank 8 is a woven structure tank body, and the woven structure is a 50-mesh structure.

[0041] To simulate the actual underwater grouting effect of cement mortar, a robotic arm 7 is installed adjacent to the water tank 6, with the output end of the robotic arm 7 operablely located vertically. In a further implementation, a steel strand 304 is fixed to the end of the horizontal arm 303 of the robotic arm 7, and a hook 305 is suspended at the end of the steel strand 304, connecting it to the grouting bucket 8 containing concrete blocks 307. In other words, when a scouring test is required, the grouting bucket 8 containing concrete blocks 307 is pre-lifted and filled with grout. Then, the handle 306 of the grouting bucket 8 is hung on the hook 305, and the rotating table 302 is rotated by the industrial control computer to slowly lower the grouting container bucket into the water tank 6. The grouting container bucket is made of 50-mesh brass and is a cylinder with a diameter of 200mm and a height of 400mm.

[0042] Preferably, when the grouting tank 8 is in the water tank 6, the highest point of the grouting tank 8 is located above the "E"-shaped PVC diverter 5.

[0043] Preferably, the test specimens placed inside the grouting bucket 8 are several concrete blocks 307.

[0044] Preferably, the outer wall of the water tank 6 is provided with an electrically connected touch screen display 9, a power switch 10, and a power indicator light 11 for parameter adjustment.

[0045] A touch screen display 9, a power switch 10, and a power indicator light 11 are installed on the side of the water tank 6. The output terminals of the pipeline pump 2 and the flow controller 3 are both connected to the control motherboard, and the start and stop of the pipeline pump 2 and the flow rate of the flow controller 3 are controlled by the industrial control computer. The control motherboard is an Advantech AIMB-705 control motherboard.

[0046] The intelligent industrial computer control system, operated and controlled via a touchscreen display, automatically adjusts water flow speed, manipulates the robotic arm, and starts experimental equipment, achieving automation and intelligence in the experimental process. This systematic control technology not only improves experimental efficiency but also ensures the repeatability and data consistency of each experiment.

[0047] The working principle and process of this utility model:

[0048] The present invention provides a test device for the repair effect of cement mortar under dynamic water conditions. When using the device, the drain outlet 12 is closed, water is poured into the water tank 6, and the water is stopped when the water is 200mm from the top of the water tank. The hook 305 is moved to the center position of the water tank 6 by the mechanical arm. The power switch 10 is turned on, and the industrial control computer touch screen 9 enters the start interface. Different water flow rates are selected according to the research needs, and the pipeline pump 2 and flow controller 3 are started to generate constant dynamic water.

[0049] The mass loss rate is calculated by measuring the change in mass of concrete block 307 in grouting bucket 8, thereby enabling the testing operation.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A test apparatus for the effect of cement mortar repair under dynamic water conditions, characterized in that, include: A dynamic water control component is provided with a water supply tank (1) and a pipe (4) connected to the water supply tank (1). A pipe pump (2) and a flow controller (3) are provided on the pipe (4). An underwater scour test assembly is provided, comprising a water tank (6), a grouting bucket (8), and a robotic arm (7). The robotic arm (7) is positioned on the water tank (6) for controlling the suspension position of the grouting bucket (8) within the water tank (6). The pipe (4) is installed on one side of the water tank (6) and provides a controllable water flow through the flow controller (3).

2. The test apparatus for evaluating the repair effect of cement mortar under dynamic water conditions according to claim 1, characterized in that, The pipe (4) is connected to the water tank (6) by an "E" type PVC diverter (5).

3. The test apparatus for testing the repair effect of cement mortar under dynamic water conditions according to claim 2, characterized in that, The water tank (6) is a cuboid structure with an open top. The water tank (6) is equipped with a water outlet pipe (12), which is located at the end opposite to the "E" type PVC diverter (5).

4. The test apparatus for testing the effect of cement mortar repair under dynamic water conditions according to claim 3, characterized in that, The robotic arm (7) includes a column (301), a rotating platform (302) located on the top of the column (301), and a horizontal arm (303) located at the other end of the rotating platform (302). The grouting tank (8) is suspended at the other end of the horizontal arm (303).

5. The test apparatus for testing the effect of cement mortar repair under dynamic water conditions according to claim 4, characterized in that, The end of the cross arm (303) is provided with a steel strand (304), and the end of the steel strand (304) is provided with a hook (305). The grouting bucket (8) is connected to the hook (305) via a handle (306).

6. The test apparatus for testing the effect of cement mortar repair under dynamic water conditions according to claim 5, characterized in that, The grouting bucket (8) is a woven structure bucket body, and the woven structure is a 50-mesh structure.

7. The test apparatus for testing the effect of cement mortar repair under dynamic water conditions according to claim 2, characterized in that, When the grouting bucket (8) is in the water tank (6), the highest point of the grouting bucket (8) is located above the "E" type PVC diverter (5).

8. The test apparatus for testing the effect of cement mortar repair under dynamic water conditions according to any one of claims 1-7, characterized in that, The grouting bucket (8) contains several concrete blocks (307) as experimental samples.

9. The test apparatus for testing the effect of cement mortar repair under dynamic water conditions according to claim 2, characterized in that, The outer wall of the water tank (6) is equipped with an electrically connected touch screen (9), a power switch (10), and a power indicator light (11) for parameter adjustment.

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