Device for testing expansibility of grouting material

Abstract

The utility model provides a grouting material expansibility testing device which comprises a base, a rack is arranged on the base, a discharging opening is formed in the base, two groups of testing cylinders are arranged on the base in a relatively sliding mode, the two groups of testing cylinders form a cavity for containing grouting materials, grouting holes are formed in the testing cylinders, a driving mechanism is arranged on the base, and the driving mechanism is arranged on the base. The driving mechanism drives the two groups of testing cylinders to slide in opposite directions and self-lock the positions of the two groups of testing cylinders, a pressing plate is arranged in the two groups of testing cylinders in a liftable manner, the pressing plate is attached to the inner walls of the two groups of testing cylinders, and a testing mechanism for testing the displacement of the pressing plate is arranged on the rack. According to the device, after a test is finished, the two groups of test cylinders can be controlled to be opened and the positions of the test cylinders can be self-locked through the driving mechanism, so that a grouting material after the test can be quickly discharged through the discharge port, and then the inner walls of the test cylinders are cleaned, and compared with a traditional test mode of assembling and disassembling a mold, the device effectively improves the test efficiency, and the test efficiency is greatly improved. And the subsequent test is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting testing, in particular to a grouting material expansion testing device. Background Art

[0002] Grouting is a commonly used method for anti-seepage, leak plugging, and reinforcement in projects such as underground chamber excavation, deep tunneling, engineering slope support, and dam foundation treatment. The performance of grouting materials is an important factor affecting the effectiveness of grouting projects. Grouting materials have a variety of performance indicators. In the plastic stage, they mainly include indicators such as pumpability, fluidity, and stability. In the solidification stage, they mainly include indicators such as cohesion, durability, impermeability, expansion, and strength. Among them, the expansion of grouting materials is an important performance indicator of grouting materials in the solidification stage. Utilizing the expansion of grouting materials can not only reduce the need for multiple grouting due to volume shrinkage of the grouting material consolidation body, which leads to increased grouting material consumption and increased costs, but also shorten grouting time, improve construction efficiency, and enhance the quality of grouting projects. Therefore, rapid and efficient testing of the expansion performance of grouting materials is of great significance for the development and application of grouting treatment materials for complex rock and soil bodies.

[0003] For example, Chinese utility model patent publication number CN 216669910 U discloses a device for testing the expansion properties of polymer grouting materials. The device has the following features: it includes a base, a container frame, a top plate, a mounting frame, a detector, and a positioning device. The top of the base contains a positioning device, a rotating drive member, and a clamping block to position and fix the lower side of the container frame, so that the container frame is centered on the top of the base, making it easy to remove the container frame.

[0004] Due to the structural limitations of the polymer grouting material expansion performance testing device, when using the device to test the material's expansion performance, it is difficult to quickly control the opening and closing of the mold, and it is inconvenient to pour and clean the grouting material, which prolongs the material expansion test time and reduces the test work efficiency. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model proposes a grouting material expansion testing device to solve the technical problem raised in the above background technology that the existing grouting material expansion testing device is not convenient to quickly control the opening and closing of the mold during use, which leads to inconvenience in the pouring and cleaning of the grouting material.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grouting material expansion testing device, comprising:

[0007] A base, wherein a frame is provided on the base and a discharge port is provided on the base;

[0008] Two groups of test cylinders are provided and are relatively slidably arranged on the base. The two groups of test cylinders form a cavity for accommodating grouting material. Grouting holes are opened on the test cylinders.

[0009] a driving mechanism, disposed on the base, to drive the two groups of test cylinders to slide in opposite directions and self-lock their positions; and

[0010] The pressing plate is arranged in a liftable manner in the two groups of the test cylinders and is in contact with the inner wall. The frame is provided with a testing mechanism for testing the displacement of the pressing plate.

[0011] In a preferred embodiment, the driving mechanism includes:

[0012] A driving ring is rotatably disposed on the base along its axis and is provided with two sets of guide grooves;

[0013] There are two groups of driving columns, which are respectively arranged at the bottom of the two groups of test cylinders and slidably clamped in the guide grooves;

[0014] There are two groups of sliders, which are respectively arranged at the bottom of the two groups of driving columns. A sliding groove is opened on the base, and the two groups of sliders are both clamped in the sliding groove; and

[0015] The control assembly is arranged on the base and connected to the driving ring to drive the driving ring to rotate.

[0016] In a preferred embodiment, the control component includes:

[0017] Worm gear teeth are arranged circumferentially around the drive ring; and

[0018] The worm is rotatably arranged on the base along its axis and meshes with the worm wheel teeth.

[0019] In a preferred embodiment, one side of one group of the test cylinders is provided with a positioning ridge, and one side of the other group of the test cylinders is provided with a positioning groove, and the positioning ridge can be slidably engaged in the positioning groove.

[0020] In a preferred embodiment, the testing mechanism includes:

[0021] A test rod is slidably arranged on the frame along its axis, and the pressure plate is arranged at the bottom of the test rod;

[0022] a displacement sensor, disposed on the frame, with a detection end thereof connected to the test rod; and

[0023] A counterweight block is arranged on the pressure plate.

[0024] In a preferred embodiment, a baffle is provided on the pressure plate, and the counterweight block is arranged on the inner side of the baffle in a liftable manner.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] When in use, the device injects grouting material into the cavity formed by two sets of test barrels through the grouting holes. The pressure plate is then raised and lowered to fit the grouting material. As the grouting material expands, it drives the pressure plate upward. The displacement of the pressure plate can then be measured by the testing mechanism to determine the material's expansion properties. After the test is completed, the drive mechanism can control the two sets of test barrels to open and self-lock their positions, allowing the tested grouting material to be quickly discharged through the discharge port. The inner walls of the test barrels can then be cleaned. Compared to traditional testing methods involving the assembly and disassembly of molds, this device effectively improves testing efficiency and facilitates subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a grouting material expansion testing device provided by the utility model;

[0029] Figure 2 This is a schematic diagram of the upward axis structure of a grouting material expansion testing device of the utility model;

[0030] Figure 3 The utility model is a structural schematic diagram of a test tube in a grouting material expansion testing device.

[0031] Reference numerals:

[0032] 101. Base; 102. Frame; 103. Displacement sensor; 104. Chute; 105. Discharge port;

[0033] 201, test rod; 202, pressure plate; 203, counterweight; 204, baffle;

[0034] 301, drive ring; 302, guide groove; 303, worm gear; 304, worm;

[0035] 401, test tube; 402, drive column; 403, slider; 404, positioning ridge; 405, positioning groove; 406, grouting hole. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technicians in this field can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0037] Example:

[0038] like Figure 1 、 2 As shown, the present invention provides a grouting material expansion test device, comprising a base 101, a frame 102 provided on the base 101, two sets of test cylinders 401 slidably provided on the base 101, the two sets of test cylinders 401 forming a cavity for accommodating the grouting material, and grouting holes 406 being provided on the test cylinders 401. A liftable pressing plate 202 is provided in the two sets of test cylinders 401, the pressing plate 202 being in contact with the inner walls of the two sets of test cylinders 401, and a testing mechanism for testing the displacement of the pressing plate 202 is provided on the frame 102. The testing mechanism comprises a test rod 201 slidably provided on the frame 102 along its axis, the pressing plate 202 being provided at the bottom of the test rod 201, a displacement sensor 103 being provided on the frame 102, the detection end of the displacement sensor 103 being connected to the test rod 201, and a counterweight 203 being provided on the pressing plate 202.

[0039] During use, the two groups of test tubes 401 are first controlled to close, and then grouting material is injected into the two groups of test tubes 401 through the grouting holes 406. Then, the test rod 201 is controlled to slide on the frame 102 to drive the pressing plate 202 to descend until it contacts the grouting material, and the expansion test of the grouting material can be performed. When the grouting material expands, the pressing plate 202 is driven to rise, so that the test rod 201 rises. The displacement of the test rod 201 can be detected by the displacement sensor 103 to obtain the expansion of the grouting material. And different numbers and weights of counterweights 203 can be placed on the pressing plate 202, and a baffle 204 is provided on the pressing plate 202. The counterweight 203 can be raised and lowered and arranged inside the baffle 204. The position of the counterweight 203 is limited by the baffle 204 to simulate the expansion of the grouting material under different loads.

[0040] like Figure 1 、 3As shown, in this embodiment, a driving mechanism is provided on the base 101 to drive the two groups of test cylinders 401 to slide in opposite directions and self-lock their positions. The driving mechanism includes a driving ring 301 rotatable along its axis and provided on the base 101. Two groups of guide grooves 302 are provided on the driving ring 301. The bottoms of the two groups of test cylinders 401 are provided with driving columns 402, and the driving columns 402 are slidably clamped in the guide grooves 302. The bottoms of the two groups of driving columns 402 are provided with sliders 403. A sliding groove 104 is provided on the base 101, and the two groups of sliders 403 are both clamped in the sliding groove 104.

[0041] The two sets of guide grooves 302 can be driven to move by controlling the rotation of the drive ring 301. Since the movement of the test barrel 401 is limited by the cooperation between the slider 403 and the slide groove 104 and can only move horizontally and open and close, the drive ring 301 can control the two sets of test barrels 401 to move and open and close in opposite directions during the rotation process. A discharge port 105 is provided on the base 101. After the test is completed, the two sets of test barrels 401 can be controlled to open and discharge the tested grouting material through the discharge port 105. Compared with the traditional method of placing a mold on the base 101 and removing the mold after testing, this device can further improve the efficiency of grouting material cleaning, thereby effectively improving testing efficiency.

[0042] like Figure 1 、 2 As shown, in this embodiment, the base 101 is provided with a control assembly connected to the drive ring 301, which drives the drive ring 301 to rotate. The control assembly includes worm gear teeth 303 arranged circumferentially around the drive ring 301. The base 101 is provided with a rotatably mounted worm 304, which meshes with the worm gear teeth 303.

[0043] A handle can be added to the worm 304 or the worm 304 can be driven to rotate by a motor. During the rotation process, the worm 304 can drive the drive ring 301 to rotate by engaging with the worm gear teeth 303. After the rotation, the position of the drive ring 301 can be locked, effectively preventing the drive ring 301 from moving during the test process, thereby achieving stable opening and closing control of the two sets of test tubes 401, and the control is simple and convenient.

[0044] like Figure 3 As shown, in this embodiment, one set of test tubes 401 is provided with a positioning rib 404 on one side, and the other set of test tubes 401 is provided with a positioning groove 405 on one side. The positioning rib 404 can be slidably engaged in the positioning groove 405. The cooperation between the positioning groove 405 and the positioning rib 404 can position the movement of the two sets of test tubes 401, thereby preventing the two sets of test tubes 401 from being misaligned during the test process and preventing the grouting material from flowing out of the gap between the two sets of test tubes 401, thereby improving the accuracy of the grouting material expansion test.

[0045] Specific usage and beneficial effects of this utility model:

[0046] When in use, the device injects grouting material into the cavity formed by the two sets of test barrels 401 through the grouting holes 406. The pressure plate 202 is then raised and lowered to conform to the grouting material. As the grouting material expands, it drives the pressure plate 202 upward. The displacement of the pressure plate 202 can then be measured by the testing mechanism to determine the material's expansion properties. After the test is complete, the two sets of test barrels 401 can be opened and locked in place by the drive mechanism, allowing the tested grouting material to be quickly discharged through the discharge port 105. The inner walls of the test barrels 401 can then be cleaned. Compared to traditional methods of testing by attaching and detaching molds, this device significantly improves testing efficiency and facilitates subsequent testing.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments. It is obvious to those skilled in the art that modifications or improvements can be made based on the present invention. Therefore, such modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. A grouting material expansion testing device, characterized in that: Includes: A base (101), wherein a frame (102) is provided on the base (101), and a discharge port (105) is provided on the base (101); Two groups of test cylinders (401) are provided and are relatively slidably arranged on the base (101). The two groups of test cylinders (401) form a cavity for accommodating grouting material. Grouting holes (406) are opened on the test cylinders (401); A driving mechanism is provided on the base (101) to drive the two groups of test cylinders (401) to slide in opposite directions and self-lock their positions; and The pressing plate (202) is arranged in a liftable manner in the two groups of the testing cylinders (401) and is in contact with the inner wall. The frame (102) is provided with a testing mechanism for testing the displacement of the pressing plate (202).

2. A grouting material expansion testing device according to claim 1, characterized in that: The driving mechanism includes: A driving ring (301) is rotatably arranged on the base (101) along its axis and is provided with two sets of guide grooves (302); There are two groups of driving columns (402), which are respectively arranged at the bottom of the two groups of the testing cylinders (401) and are slidably clamped in the guide grooves (302); There are two groups of sliders (403), which are respectively arranged at the bottom of the two groups of driving columns (402). A slide groove (104) is opened on the base (101), and the two groups of sliders (403) are both clamped in the slide groove (104); and A control component is arranged on the base (101) and connected to the driving ring (301) to drive the driving ring (301) to rotate.

3. A grouting material expansion testing device according to claim 2, characterized in that: The control component includes: Worm gear teeth (303) are arranged circumferentially on the circumference of the drive ring (301); and The worm (304) is rotatably arranged on the base (101) along its axis and meshes with the worm gear teeth (303).

4. A grouting material expansion testing device according to claim 1, characterized in that: One side of one group of the test cylinders (401) is provided with a positioning rib (404), and one side of the other group of the test cylinders (401) is provided with a positioning groove (405), and the positioning rib (404) can be slidably locked in the positioning groove (405).

5. A grouting material expansion testing device according to claim 1, characterized in that: The testing organization includes: A test rod (201) is slidably arranged on the frame (102) along its axis, and the pressing plate (202) is arranged at the bottom of the test rod (201); A displacement sensor (103) is provided on the frame (102), and a detection end thereof is connected to the test rod (201); and A counterweight (203) is arranged on the pressure plate (202).

6. A grouting material expansion testing device according to claim 5, characterized in that: A baffle (204) is provided on the pressure plate (202), and the counterweight (203) is arranged on the inner side of the baffle (204) in a liftable manner.

Images