Simple crack monitoring alarm device

Abstract

The utility model provides a simple crack monitoring alarm device which comprises an indicator board and an L-shaped scale plate, nail holes are preset on the indicator board and the scale plate or / and super glue is preset on the back surface of the indicator board and the scale plate, scales are arranged on the scale plate, the initial position of the scales is the right end of a horizontal section, and the simple crack monitoring alarm device further comprises an alarm and an alarm triggering assembly. The alarm triggering assembly comprises a metal elastic strip and a metal conducting strip, the left end of the metal conducting strip is used for making contact with the metal elastic strip, the right end of the metal conducting strip is connected with a wire, an insulating strip is further arranged in the vertical section of the scale plate, the upper end of the metal elastic strip is connected with a wire, and the two wires are connected with an alarm; when the distance of the crack reaches or exceeds a preset value, the metal elastic strip is in contact with the metal conductive sheet, so that the alarm forms a path, and the alarm gives an alarm to remind a worker that the distance of the crack reaches or exceeds the preset value; the alarm gives an alarm to directly prompt a worker, the distance of the crack does not need to be measured regularly, the manpower demand is reduced, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to geological disaster prevention and control, and in particular to a simple crack monitoring and alarm device. Background Art

[0002] In the current group monitoring and prevention of geological disasters, simple monitoring methods are usually used, such as stickers, steel nail distance measurement, and wire distance measurement. The above simple monitoring methods have the following disadvantages: (1) They are not intuitive. Steel nail distance measurement and wire distance measurement methods require regular measurement and recording with a ruler, which is a cumbersome process; (2) They are fragile. Stickers and wire distance measurement methods are easily damaged due to poor material quality and generally do not last more than one year; (3) They are low in accuracy. The various simple monitoring methods mentioned above have poor accuracy and the data quality cannot be guaranteed.

[0003] CN202021218640.7 discloses a simple house crack monitoring patch, including a long strip of indicator plate and an "L"-shaped scale plate, both of which are made of rust-proof metal plates or alloy plates, and the indicator plate and the scale plate can be assembled into a rectangle. The front end of the indicator plate is vertically provided with an indicator color strip, and the horizontal section of the scale plate is provided with scale lines along the upper edge, and the starting point of the scale lines is directly opposite the root of the horizontal section. The indicator plate and the scale plate are pre-set with nail holes and / or strong glue on the back. The indicator plate and the scale plate are respectively fixed to the two sides of the house crack, and can be fixed with strong glue or steel nails according to the wall conditions. It has a simple structure, is intuitive and easy to use, has a stylish appearance, is easy to install, is waterproof and durable, is inexpensive, and has high accuracy. It can be used to replace existing house crack monitoring tools, solving the defects of current house crack monitoring tools such as poor accuracy, easy damage, non-intuitiveness, and complex structure. This monitoring patch solves the above problems, but the monitoring patch needs to be regularly observed and recorded the distance of the crack during use, which requires a lot of manual work. Utility Model Content

[0004] The utility model aims to provide a simple crack monitoring and alarm device, which can sound an alarm when the distance of the crack reaches a preset value, prompting staff to take measures.

[0005] To this end, the technical solution adopted by the present invention is as follows: a simple crack monitoring and alarm device, including a long strip indicator plate and an "L"-shaped scale plate, the indicator plate and the scale plate are preset with nail holes or / and strong glue on the back, the scale plate is provided with a scale, the starting position of the scale is the right end of the horizontal segment, and also includes an alarm and an alarm trigger component, the alarm trigger component includes a metal spring bar arranged on the right side of the indicator plate and a metal conductive sheet arranged horizontally on the vertical segment of the scale plate, the left end of the metal conductive sheet extends to the left side for contacting with the metal The spring bar is in contact with the metal conductive sheet, and the right end passes through the vertical section of the scale plate and is connected to a wire. An insulating strip is also provided in the vertical section of the scale plate to prevent the metal spring bar from contacting the metal conductive sheet. The upper end of the metal spring bar is connected to a wire, and the above two wires are connected to the alarm; when the distance of the crack does not reach the preset value, the insulating strip is located between the metal spring bar and the metal conductive sheet, and the alarm cannot form a path; when the crack gradually increases and reaches or exceeds the preset value, the metal spring bar moves to the left to offset the insulating strip and contact the metal conductive sheet, so that the alarm forms a path.

[0006] As a preferred embodiment of the above scheme, the metal elastic strip is arranged at the right end of the indicator plate, the lower end of the metal elastic strip is bent toward the side away from the indicator plate and abuts against the insulating strip, and in the free state, the lower end of the metal elastic strip exceeds the lower edge of the insulating strip and contacts the metal conductive sheet, and a fixing column is provided at the left end of the metal conductive sheet to ensure that the metal conductive sheet is in a horizontal state.

[0007] Further preferably, the metal spring bar is arranged at the right end of the indicator plate, and a first return spring is provided at the upper end; when the metal spring bar is offset from the insulating strip, the first return spring can push the metal spring bar downward to contact the metal conductive sheet, and a fixing column is provided at the left end of the metal conductive sheet to ensure that the metal conductive sheet is in a horizontal state.

[0008] Further preferably, the metal conductive sheet is provided with an installation groove for sliding the insulating strip, so that the insulating strip can slide in the scale plate, the right end of the insulating strip passes through the vertical section of the scale plate to leave a pushing section, and a nail hole is provided at the end of the pushing section.

[0009] More preferably, the alarm uses dry batteries as power source.

[0010] More preferably, the indicator plate and the scale plate are made of hard plastic material, and the indicator plate and the scale plate can be assembled into a rectangle.

[0011] The beneficial effects of the present invention are as follows: the indicator plate and the scale plate are respectively installed and fixed on both sides of the crack, the distance of the insulating strip on the left side of the vertical section of the scale plate is adjusted as the preset value of the crack distance, and the insulating strip is fixed through the nail hole at the right end of the insulating strip. When the distance of the crack does not exceed the preset value, the metal elastic strip is located above the insulating strip and cannot contact the metal conductive sheet, and the alarm cannot form a path; when the crack gradually increases, the indicator plate moves to the left until the distance of the crack reaches or exceeds the preset value, the metal elastic strip contacts the metal conductive sheet, so that the alarm forms a path, and the alarm sounds an alarm to remind the staff that the distance of the crack reaches or exceeds the preset value; the alarm is directly reminded by the alarm, and there is no need to measure the distance of the crack regularly, which reduces manpower requirements and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of embodiment 1 of the present utility model.

[0013] Figure 2 It is a structural diagram of the second embodiment of the present utility model.

[0014] Figure 3 It is a schematic cross-sectional view of the installation of the metal conductive sheet and the insulating strip in the utility model. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-3 As shown, a simple crack monitoring and alarm device includes a long strip indicator plate 1 and an "L"-shaped scale plate 2. The indicator plate 1 and the scale plate 2 are preset with nail holes 3 or / and strong glue is preset on the back. The scale plate 2 is provided with a scale 201, and the starting position of the scale 201 is the right end of the horizontal segment. It is characterized in that it also includes an alarm 4 and an alarm trigger component. The alarm trigger component includes a metal spring bar 5 arranged on the right side of the indicator plate 1 and a metal conductive sheet 6 arranged horizontally on the vertical segment of the scale plate 2. The left end of the metal conductive sheet 6 extends to the left side for contact with the metal spring bar 5. Contact, the right end passes through the vertical section of the scale plate 2 and is connected with a wire, and the vertical section of the scale plate 2 is also provided with an insulating strip 7 for blocking the metal elastic strip 5 from contacting the metal conductive sheet 6, and the upper end of the metal elastic strip 5 is connected with a wire, and the above two wires are connected to the alarm 4; when the distance of the crack does not reach the preset value, the insulating strip 7 is located between the metal elastic strip 5 and the metal conductive sheet 6, and the alarm 4 cannot form a path; when the crack gradually increases and reaches or exceeds the preset value, the metal elastic strip 5 moves to the left to stagger the insulating strip 7 and contact the metal conductive sheet 6, so that the alarm 4 forms a path.

[0017] The embodiment of the present utility model is as follows Figure 1As shown, the metal spring bar 5 is disposed at the right end of the indicator plate 1. The lower end of the metal spring bar 5 bends toward the side away from the indicator plate 1 and abuts against the insulating strip 7. In its free state, the lower end of the metal spring bar 5 extends beyond the lower edge of the insulating strip 7 and contacts the metal conductive sheet 6. A fixing post 8 is provided at the left end of the metal conductive sheet 6 to ensure that the metal conductive sheet 6 remains horizontal. By utilizing the inherent elasticity of the metal spring bar 5, the lower end of the metal spring bar 5 is bent and abutted against the insulating strip 7. When the crack distance exceeds a preset value, the metal spring bar 5 automatically contacts the metal conductive sheet 6, forming a pathway and simplifying installation.

[0018] The second embodiment of the present utility model is as follows Figure 2 As shown, the metal spring bar 5 is positioned at the right end of the indicator plate 1, with a first return spring 9 disposed at its upper end. When the metal spring bar 5 is offset from the insulating strip 7, the first return spring 9 pushes the metal spring bar 5 downward to contact the metal conductive sheet 6. A fixing post 8 is disposed at the left end of the metal conductive sheet 6 to ensure that the metal conductive sheet 6 remains horizontal. By placing the first return spring 9 at the upper end of the metal spring bar 5 and keeping it in a compressed state, the metal spring bar 5 can quickly contact the metal conductive sheet 6 as soon as it separates from the insulating strip 7, forming a pathway.

[0019] The metal conductive sheet 6 includes a mounting slot for the insulating strip 7, allowing it to slide within the scale plate 2. The right end of the insulating strip 7 passes through the vertical section of the scale plate 2, leaving a push-through section. The end of this push-through section is provided with a nail hole 3. The slot for the insulating strip 7 on the metal conductive sheet 6 facilitates adjustment of the strip's position, making it suitable for various wall joints and providing greater convenience.

[0020] The alarm 4 uses dry batteries as its power source. Using dry batteries as a power source eliminates the need to wait for charging and allows immediate use after purchase. Compared to lithium batteries, dry batteries are more affordable. Dry batteries require no maintenance or charging equipment, making them suitable for devices that are not frequently used.

[0021] The indicator plate 1 and scale plate 2 are made of rigid plastic, which fits neatly together to form a rectangular shape. Rigid plastic is lightweight, moisture-resistant, and flame-retardant. It also offers excellent stability, durability, aging resistance, and ease of welding and bonding. It also boasts high flexural strength and impact toughness, high elongation upon rupture, and is extremely easy to process and shape.

[0022] The indicator plate 1 and the scale plate 2 are respectively installed and fixed on both sides of the crack, and the distance of the insulating strip 7 on the left side of the vertical section of the scale plate 2 is adjusted as the preset value of the crack distance. The insulating strip 7 is fixed through the nail hole 3 at the right end of the insulating strip 7. When the distance of the crack does not exceed the preset value, the metal spring strip 5 is located above the insulating strip 7 and cannot contact the metal conductive sheet 6, so that the alarm 4 cannot form a path; when the crack gradually increases, the indicator plate 1 moves to the left until the distance of the crack reaches or exceeds the preset value, the metal spring strip 5 contacts the metal conductive sheet 6, so that the alarm 4 forms a path, and the alarm 4 sounds an alarm to remind the staff that the distance of the crack reaches or exceeds the preset value; the alarm 4 directly reminds the staff by issuing an alarm, and there is no need to measure the distance of the crack regularly, which reduces manpower requirements and is more convenient to use.

[0023] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A simple crack monitoring and alarm device, comprising a long strip indicator plate (1) and an L-shaped scale plate (2), wherein the indicator plate (1) and the scale plate (2) are pre-set with nail holes (3) or / and a strong glue is pre-set on the back, and the scale plate (2) is provided with a scale (201), the starting position of the scale (201) is the right end of the horizontal segment, and is characterized in that: The invention also includes an alarm (4) and an alarm trigger component, wherein the alarm trigger component includes a metal spring bar (5) arranged on the right side of the indicator plate (1) and a metal conductive sheet (6) arranged transversely on the vertical section of the scale plate (2); the left end of the metal conductive sheet (6) extends to the left side for contacting the metal spring bar (5); the right end passes through the vertical section of the scale plate (2) and is connected to a wire; an insulating strip (7) for blocking the metal spring bar (5) from contacting the metal conductive sheet (6) is also arranged in the vertical section of the scale plate (2); the upper end of the metal spring bar (5) is connected to a wire, and the two wires are connected to the alarm (4); when the distance of the crack does not reach a preset value, the insulating strip (7) is located between the metal spring bar (5) and the metal conductive sheet (6), and the alarm (4) cannot form a path; when the crack gradually increases to reach or exceed the preset value, the metal spring bar (5) moves to the left to stagger the insulating strip (7) and contact the metal conductive sheet (6), so that the alarm (4) forms a path.

2. A simple crack monitoring and alarm device according to claim 1, characterized in that: The metal spring strip (5) is arranged at the right end of the indicator plate (1), the lower end of the metal spring strip (5) is bent toward the side away from the indicator plate (1) and abuts against the insulating strip (7), and in a free state, the lower end of the metal spring strip (5) exceeds the lower edge of the insulating strip (7) and contacts the metal conductive sheet (6), and a fixing column (8) is provided at the left end of the metal conductive sheet (6) to ensure that the metal conductive sheet (6) is in a horizontal state.

3. The simplified crack monitoring and alarm device according to claim 1, characterized in that: The metal spring strip (5) is arranged at the right end of the indicator plate (1), and a first return spring (9) is arranged at the upper end; when the metal spring strip (5) is offset from the insulating strip (7), the first return spring (9) can push the metal spring strip (5) to extend downward and contact the metal conductive sheet (6), and a fixing column (8) is arranged at the left end of the metal conductive sheet (6) to ensure that the metal conductive sheet (6) is in a horizontal state.

4. The simplified crack monitoring and alarm device according to claim 1, characterized in that: The metal conductive sheet (6) is provided with an installation slot for the insulating strip (7) to slide, so that the insulating strip (7) can slide in the scale plate (2). The right end of the insulating strip (7) passes through the vertical section of the scale plate (2) to leave a pushing section, and the end of the pushing section is provided with a nail hole (3).

5. The simplified crack monitoring and alarm device according to claim 1, characterized in that: The alarm (4) uses dry batteries as a power source.

6. The simplified crack monitoring and alarm device according to claim 1, characterized in that: The indicator plate (1) and the scale plate (2) are made of hard plastic material, and the indicator plate (1) and the scale plate (2) can be assembled into a rectangle.

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