Cement initial setting test needle limiting and fixing device

Abstract

The utility model discloses a limiting and fixing device for a cement initial setting test needle. Characterized in that; the device is made of a stainless steel plate; the design size of the limiting device is as follows: the length is 95 mm, the width is 65 mm, and the height is 51.2 mm; a test range area of a circle which takes the center as an original point and has the diameter of 45mm is formed on a panel in the device; a plurality of circular holes with the diameter of 2mm are formed in the test area, and are uniformly formed in the test area with the circle center distance of 7mm. The total number of holes in the device is 29, and the number of test times can be met. The device is convenient to mount and dismount, and can be directly placed on a bottom plate with the side length or the diameter of 100mm in a test. And in the test process, the test needle penetrates through the round hole and does not directly contact with the bottom plate, so that the test needle is prevented from being bent, the test difficulty is reduced, and the test result is not influenced.

Description

Technical Field

[0001] The utility model relates to the field of cement setting time test, in particular to a cement initial setting test needle limiting and fixing device. Background Art

[0002] The cement setting time test is conducted using a standard Favica apparatus. The specification requires that the metal column should be gently supported during the initial measurement of the cement initial setting time test to allow it to slowly descend to prevent the test needle from bending. However, the result is based on the free fall of the test needle. In the long-term test process, test personnel will inevitably make mistakes, causing the test needle to bend, affecting the test results and causing certain losses. Utility Model Content

[0003] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a cement initial setting test needle limit fixing device. The device is easy to install and disassemble, and can be directly placed on a bottom plate with a side length or diameter of 100mm during the test. In addition, during the test, because the test needle passes through the circular hole, it will not directly contact the bottom plate, which can ensure that the test needle will not bend, reduce the difficulty of the test, and will not affect the test results.

[0004] The utility model is realized by constructing a cement initial setting test needle limit fixing device, which is characterized in that: the device has a panel, and the device is made of a stainless steel plate;

[0005] A test range area with a circle of 45 mm in diameter and the center as the origin is formed on the panel of the device; a plurality of circular holes with a diameter of 2 mm are opened in the area, and the circular holes are evenly arranged in the test range area with a center distance of 7 mm.

[0006] According to the cement initial setting test needle limiting and fixing device of the utility model, it is characterized by that the total number of openings is 29, which can meet the number of tests.

[0007] According to the cement initial setting test needle limit fixing device of the utility model, it is characterized in that the design dimensions of the limit fixing device are 95mm in length, 65mm in width and 51.2mm in height.

[0008] According to the cement initial setting test needle limiting and fixing device of the utility model, the feature is that the device is made of a 1mm thick stainless steel plate.

[0009] The utility model has the following advantages: the device is easy to install and disassemble, and can be directly placed on a bottom plate with a side length or diameter of 100 mm during the test. In addition, during the test, since the test needle passes through the round hole and does not directly contact the bottom plate, it can be ensured that the test needle will not be bent, reducing the difficulty of the test and not affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a top view of the device;

[0011] Figure 2 It is a side schematic diagram of the device;

[0012] Figure 3 It is an elevation schematic diagram of the device.

[0013] Among them: panel 1, test range area 2, round hole 3. Specific implementation manner

[0014] Next, the present utility model will be described in detail in conjunction with the attached Figures 1 - 3 The technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0015] The present utility model provides a device for limiting and fixing the initial setting needle of cement herein. As Figures 1 - 3 shown, it can be implemented in the following manner;

[0016] The device is made of a 1mm thick stainless steel plate; it has a panel 1;

[0017] The test mold for setting time is a truncated cone with a depth of 40mm ± 0.2mm, a top inner diameter of φ65mm ± 0.5mm, and a bottom inner diameter of φ75mm ± 0.5mm. The length of the needle rod of the initial setting needle is 50 ± 1mm, and the specification requires that the initial setting time is determined when the needle sinks to 4mm ± 1mm from the bottom plate, which means the cement reaches the initial setting state. Therefore, the design size of this limiting device is 95mm in length, 65mm in width, and 51.2mm in height.

[0018] The specification requires that during the entire test process, the position where the needle sinks should be at least 10mm away from the inner wall of the test mold. Therefore, a circle with a diameter of 45mm centered on the center of the 95*65mm panel 1 is the test range area 2. A round hole 3 with a diameter of 2mm is opened at the coincident center of the circle, and then holes are uniformly opened within the test range at a distance of 7mm from the center of the circle. The total number of holes opened is 29, which can meet the number of tests.

[0019] This patent has the following advantages and beneficial effects: The device is convenient for installation and disassembly, and can be directly placed on a bottom plate with a side length or diameter of 100mm during the test. And during the test process, since the needle passes through the round hole 3 and does not directly contact the bottom plate, it can ensure that the needle will not be bent, reducing the test difficulty and not affecting the test results.

[0020] Specific usage process: During the test, install the device on a bottom plate with a side length or diameter of 100 mm, and align the center of the device as closely as possible with the center of the test mold. Move the bottom plate so that the needle rod of the test needle does not touch the device during the sinking process. If the specimen has not yet reached the setting state at this time, the tail of the test needle will contact the device and the test needle will stop sinking.

[0021] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for limiting and fixing the initial setting needle of cement, characterized in that ； The device has a panel (1), and the device is made of stainless steel plate; In the device, a test range area (2) in the shape of a circle with a diameter of 45 mm centered at the origin is formed on the panel (1); a plurality of round holes (3) with a diameter of 2 mm are opened in this area, and the round holes (3) are evenly distributed within the test range area at a center distance of 7 mm.

2. The initial setting needle limiting and fixing device for cement according to claim 1, characterized in that; The total number of opened holes is 29, which can meet the number of test times.

3. The cement initial setting test needle limit fixing device according to claim 1, characterized in that; The designed size of the limit fixing device is 95 mm in length, 65 mm in width, and 51.2 mm in height.

4. The cement initial setting test needle limit fixing device according to claim 1, wherein; The material of the device is made of a 1-mm-thick stainless steel plate.

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