Special concrete size change detection method for terrace and magnetic block positioning device

Abstract

The invention relates to the technical field of floor detection, in particular to a size change detection method for concrete special for a floor and a magnetic block positioning device. Comprising the following steps that S1, magnetic blocks are put into a specific position of concrete before initial setting of the concrete, and the initial positions of the multiple magnetic blocks are recorded; s2, when the size change condition needs to be measured, iron powder is thrown above the initial position of the corresponding magnetic block, and the point where the iron powder is distributed most densely after falling is marked as the change position of the magnetic block. And S3, comparing the change position of the magnetic block with the initial position to obtain the change size of the concrete. And the iron powder thrown to the surface of the concrete is gathered and falls right above the magnetic block under the action of the magnetic block, so that the position of the shifted magnetic block is positioned. And the deviation condition of the magnetic block can be obtained by comparing the initial position and the change position of the magnetic block. According to the mode, the change of the concrete is shown, so that the concrete can be directly measured through a conventional measuring scale, and the change size of the concrete can be conveniently measured.

Description

Technical Field

[0001] The present invention relates to the technical field of floor detection, and in particular to a method for detecting size changes of special concrete for floor and a magnetic block positioning device. Background Art

[0002] During the solidification process of concrete, it will shrink or expand, which will cause the size of the floor to change. If the size change is large or small, it may cause excessive stress inside the floor, and in severe cases, it may cause risks such as cracking of the floor. Therefore, it is necessary to detect the size change of concrete during hardening in floor construction, and then formulate relevant solutions based on the size change. However, there is no detection device and method for the size change of the floor in the prior art, which makes the measurement of this data very inconvenient. Summary of the invention

[0003] The object of the present invention is to provide a method for detecting size changes of concrete specially used for floor and a magnetic block positioning device, which can conveniently detect the size changes of concrete.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A method for detecting size changes of special concrete for flooring, comprising the following steps:

[0006] S1: before the initial setting of the concrete, a magnetic block is placed inside a designated position of the concrete and the initial positions of several magnetic blocks are recorded;

[0007] S2: When the size change needs to be measured, iron powder is thrown above the initial position of the corresponding magnetic block and the point where the iron powder is most densely distributed after landing is recorded as the change position of the magnetic block;

[0008] S3: Compare the changed position of the magnetic block with the initial position to obtain the changed size of the concrete.

[0009] Furthermore, a single-point size change detection method is also included, wherein the initial position and the changed position of a single magnetic block are compared to obtain the position change size of the magnetic block.

[0010] Furthermore, it also includes a multi-point size change detection method, wherein the relationship between the initial positions of any two magnetic blocks and the changed position relationship after the change are compared to obtain the position change size of the two magnetic blocks.

[0011] Furthermore, the magnetic block is spherical.

[0012] Furthermore, the magnetic block is placed into the concrete to a depth of 1-5 cm.

[0013] Furthermore, the magnetic block is a permanent magnet.

[0014] Furthermore, the magnetic block is an iron block; it also includes a magnetizing mechanism; the magnetizing mechanism is provided with a magnet; before the iron powder is thrown, the magnetizing mechanism is first placed above the initial position of the magnetic block to magnetize the magnetic block; then the magnetizing mechanism is removed and the iron powder is thrown again.

[0015] Furthermore, the magnetizing mechanism is provided with an electromagnet or a permanent magnet.

[0016] A magnetic block positioning device comprises a vibration plate and a bracket arranged at the lower part of the vibration plate.

[0017] Furthermore, the vibration plate is a transparent plate; the vibration plate is hollow and filled with iron powder; the vibration plate is also provided with a vibration motor.

[0018] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0019] The present invention adds magnetic blocks to the interior of the concrete so that the iron powder thrown onto the surface of the concrete gathers and falls directly above the magnetic blocks under the action of the magnetic blocks. The center of the iron powder gathering area is the current position of the magnetic block, and the position of the magnetic block after displacement is thereby located. The displacement of the magnetic block can be obtained by comparing the initial position and the changed position of the magnetic block. The magnetic block is buried inside the concrete, and its displacement is the same as the flow of the concrete. The moving size of the magnetic block is then equivalent to the changing size of the concrete. This method shows the changes in the concrete, and is convenient for direct measurement using a conventional ruler, so that the changing size of the concrete can be conveniently measured.

[0020] The spherical shape of the magnet makes it have no edges and corners, so it is easier to move with the size changes of the concrete. At the same time, its magnetic field gathers into a circle on the surface of the concrete, and the iron powder gathering area that finally appears is also a circle. The center of the circle is the current position of the magnet, which is convenient for determining the center.

[0021] The magnetic block can be set as an iron block and magnetized by the magnetizing device when it is needed to generate a magnetic field. It will gradually demagnetize after the measurement. It can also adapt well to special scenarios where the floor does not allow magnetic fields.

[0022] The magnetic block positioning device uses a vibration motor to vibrate the iron powder inside it, thereby forming an iron powder gathering area, avoiding the inconvenience caused by manually throwing iron powder. At the same time, the magnetic block positioning device can be used to position the magnetic block in each process of concrete solidification, so that the detection of concrete size changes can be carried out at any etching. If iron powder is thrown directly on the concrete surface, it may be mixed into the concrete, so measurement can only be performed after the concrete is completely solidified. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 Schematic diagram of the magnet inside the concrete;

[0025] Figure 2 Schematic diagram of the magnetic positioning device.

[0026] Icon: 1-concrete, 2-magnet, 3-iron powder, 4-vibration plate, 5-bracket, 6-vibration motor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Example:

[0029] like Figure 1 and Figure 2 As shown, the present invention provides a method for detecting size changes of special floor concrete 1, comprising the following steps:

[0030] S1: Before the initial setting of concrete 1, a magnetic block 2 is placed inside a designated position of concrete 1 and the initial positions of several magnetic blocks 2 are recorded. The initial setting is carried out after the concrete 1 is leveled and vibrated. At this time, the concrete 1 will not be operated and the concrete 1 is in a stable state. After the magnetic block 2 is placed, the position will not be moved by external force. At the same time, the concrete 1 at this time is in a fluid state, which is convenient for the placement of the magnetic block 2. Specifically, the magnetic block 2 is pressed into the interior of the concrete 1 and the formed pit is smoothed. The position where the magnetic block 2 is placed can be set as required. The magnetic block 2 can be a magnet as long as it is magnetic.

[0031] S2: When it is necessary to measure the size change, sprinkle iron powder 3 above the initial position of the corresponding magnetic block 2 and record the point where the iron powder 3 is most densely distributed after it falls as the changed position of the magnetic block 2. The smaller the particle size of the iron powder 3, the better, and it can be adsorbed under the action of a weak magnetic field. The timing of the measurement can be set as needed, and can be any time after the initial coagulation. During the falling process, the iron powder 3 will fall to the ground directly above the magnetic block 2 under the action of the magnetic field, and eventually a dense area of ​​iron powder 3 will be formed directly above the magnetic block 2. The center of this area can be defined as the position of the magnetic block 2 after the change.

[0032] S3: Compare the changed position of the magnetic block 2 with the initial position to obtain the changed size of the concrete 1. In the horizontal plane, the initial position of the magnetic block 2 is defined as the origin and the coordinates are established. The position offset of the changed position relative to the origin can be regarded as the degree of contraction or expansion of the concrete 1 during the solidification process. Specifically, the initial positions of several magnetic blocks 2 are set according to the characteristics of the concrete 1. For example, two magnetic blocks 2 can be placed in the concrete 1 at a distance of one meter. During the detection, the distance by which the distance between the two magnetic blocks 2 increases or decreases represents the size of the expansion or contraction of the concrete 1.

[0033] The present invention adds a magnetic block 2 to the interior of the concrete 1, so that the iron powder 3 thrown onto the surface of the concrete 1 gathers and falls directly above the magnetic block 2 under the action of the magnetic block 2. The center of the iron powder 3 gathering area is the current position of the magnetic block 2, thereby locating the position of the magnetic block 2 after the offset. The offset of the magnetic block 2 can be obtained by comparing the initial position and the changed position of the magnetic block 2. The magnetic block 2 is buried in the concrete 1, and its offset is the same as the flow of the concrete 1. Then, the moving size of the magnetic block 2 is equivalent to the change size of the concrete 1. This method shows the change of the concrete 1, and then it is convenient to measure directly with a conventional ruler, so that the change size of the concrete 1 can be conveniently measured. In addition, the magnetic block 2 is buried in the concrete 1, and while meeting the measurement requirements, it will not leave any traces on the surface of the concrete 1, thereby ensuring the quality of the floor.

[0034] The more magnetic blocks 2 are placed, the richer the conclusions that can be drawn from the analysis. The number of magnetic blocks 2 can also be set as needed. For example, the magnetic blocks 2 are evenly distributed throughout the floor, and the movement patterns of all magnetic blocks 2 are observed to study the size change patterns and change direction patterns of large-area concrete 1 during the solidification process.

[0035] This embodiment also includes a single point size change detection method, which is to compare the initial position and the changed position of a single magnetic block 2 to obtain the position change size of the magnetic block 2. This method can be used to analyze the movement of a single magnetic block 2.

[0036] This embodiment also includes a multi-point size change detection method, which is to compare the relationship between the initial positions of any two magnetic blocks 2 and the changed position relationship after the change to obtain the position change size of the two magnetic blocks 2. This method can measure the change of concrete 1 within a certain range.

[0037] In this embodiment, the magnetic block 2 is spherical. The spherical shape of the magnetic block 2 makes it have no edges and corners, and it is easier to move with the size change of the concrete 1. At the same time, its magnetic field is gathered into a circle on the surface of the concrete 1, and the iron powder 3 gathering area that finally appears is also a circle, and the center of the circle is the current position of the magnetic block 2, which is convenient for determining the center.

[0038] In this embodiment, the depth of the magnet block 2 inserted into the concrete 1 is 1-5 cm. This depth ensures the buried depth of the magnet block 2 in the concrete 1, and ensures the thickness and strength of the concrete 1. It also ensures the magnetic field strength of the magnet block 2 on the surface of the concrete 1.

[0039] In this embodiment, the magnetic block 2 is a permanent magnet. For floors without special requirements, magnets can be directly embedded as the magnetic block 2.

[0040] In this embodiment, the magnetic block 2 is an iron block. It also includes a magnetizing mechanism. The magnetizing mechanism is provided with a magnet. Before the iron powder 3 is thrown, the magnetizing mechanism is first placed above the initial position of the magnetic block 2 to magnetize the magnetic block 2. Then the magnetizing mechanism is removed and the iron powder 3 is thrown again.

[0041] If the magnetic block 2 is set as an iron block, it can be magnetized by the magnetizing device when it is needed to generate a magnetic field. It will gradually demagnetize after the measurement. It can also adapt well to special scenarios where the floor does not allow magnetic fields. For example, an AGV warehouse where a magnetic induction guide device needs to be laid on the ground.

[0042] In this embodiment, the magnetizing mechanism is provided with an electromagnet or a permanent magnet, as long as it can generate a strong magnetic field and magnetize the magnetic block 2.

[0043] The present invention also provides a magnetic block 2 positioning device, comprising a vibration plate 4 and a bracket 5 arranged at the lower part of the vibration plate 4. Figure 2 As shown, the bracket 5 supports the vibration plate 4. When measuring, the positioning device is placed above the initial position of the magnetic block 2 and the iron powder 3 is sprinkled on the vibration plate 4. The vibration plate 4 can also be struck to vibrate, so that the iron powder 3 can better form a gathering area on the vibration plate 4. This avoids the trouble of directly sprinkling the iron powder 3 on the surface of the concrete 1 and then cleaning it.

[0044] In this embodiment, the vibration plate 4 is a transparent plate. The vibration plate 4 is hollow and filled with iron powder 3. The vibration plate 4 is also provided with a vibration motor 6. When in use, the vibration plate 4 is first shaken to evenly distribute the iron powder 3 inside the vibration plate 4. Subsequently, the vibration plate 4 is placed above the initial position of the magnetic block 2 and vibrated by the vibration motor 6 to form an iron powder 3 gathering area. This further reduces the difficulty of operation.

[0045] The iron powder 3 is installed in the interlayer of the vibration plate 4 to form a whole, which better avoids the trouble of cleaning up after the iron powder 3 is scattered. The transparent vibration plate 4 is convenient for observing the iron powder 3 gathering area inside it, and it is also convenient to observe the surface of the concrete 1 through the vibration plate 4 and then determine the position of the magnetic block 2 on the surface of the concrete 1. The bracket 5 supports the vibration plate 4 and also facilitates the insertion of a marker pen or other device under the vibration plate 4 to mark the position of the magnetic block 2.

[0046] At the same time, the magnetic block 2 can be positioned by the magnetic block 2 positioning device in each process of the solidification of the concrete 1, so that the detection of the size change of the concrete 1 can be carried out at any time. If the iron powder 3 is directly thrown on the surface of the concrete 1, the iron powder 3 may be mixed into the concrete 1, so the measurement can only be carried out after the concrete 1 is completely solidified.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for detecting size changes of special concrete for floor, characterized by: The steps include: S1: before the initial setting of the concrete, a magnetic block is placed inside a designated position of the concrete and the initial positions of several magnetic blocks are recorded; S2: When the size change needs to be measured, iron powder is thrown above the initial position of the corresponding magnetic block and the point where the iron powder is most densely distributed after landing is recorded as the change position of the magnetic block; S3: Compare the changed position of the magnetic block with the initial position to obtain the changed size of the concrete.

2. The method for detecting dimensional changes of special floor concrete according to claim 1 is characterized in that: It also includes a single-point size change detection method, which comprises comparing the initial position and the changed position of a single magnetic block to obtain the position change size of the magnetic block.

3. The method for detecting dimensional changes of special floor concrete according to claim 2 is characterized in that: It also includes a multi-point size change detection method, which is to compare the relationship between the initial positions of any two magnetic blocks and the changed position relationship after the change to obtain the position change size of the two magnetic blocks.

4. The method for detecting dimensional changes of special floor concrete according to claim 3 is characterized in that: The magnetic block is in a spherical shape.

5. The method for detecting dimensional changes of special floor concrete according to claim 4 is characterized in that: The depth of the magnetic block inserted into the concrete is 1-5 cm.

6. The method for detecting dimensional changes of special floor concrete according to claim 5 is characterized in that: The magnetic block is a permanent magnet.

7. The method for detecting dimensional changes of special floor concrete according to claim 5, characterized in that: The magnetic block is an iron block; it also includes a magnetizing mechanism; the magnetizing mechanism is provided with a magnet; before the iron powder is thrown, the magnetizing mechanism is first placed above the initial position of the magnetic block to magnetize the magnetic block; then the magnetizing mechanism is removed and the iron powder is thrown again.

8. The method for detecting dimensional changes of special floor concrete according to claim 7 is characterized in that: The magnetizing mechanism is provided with an electromagnet or a permanent magnet.

9. A magnetic block positioning device, characterized in that: It comprises a vibration plate and a bracket arranged at the lower part of the vibration plate.

10. The magnetic block positioning device according to claim 9, characterized in that: The vibration plate is a transparent plate; the vibration plate is hollow and filled with iron powder; the vibration plate is also provided with a vibration motor.

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