KR20210153995A - Flip type pressure sensing device for detecting loosening of form fasteners - Google Patents

Abstract

The present invention relates to a flip-type pressure sensing device for sensing the loosening of a mold fastener and, more specifically, to a safety device including a fastening part of a mold, and a fastener comprising a bolt and a nut to be mounted in the fastening part, and operated to sense and display a fastening state of the fastener. The flip-type pressure sensing device includes: a pressure sensor placed between the fastening part and the head of the bolt to sense fastening pressure of the fastener; a safety cap covering the head of the bolt; a detection part embedded in the safety cap, and receiving a sensing signal from the pressure sensor to transmit the same to a separated place and display the fastening state of the fastener; and a connection part connecting the pressure sensor with the detection part to deliver the sensing signal from the pressure sensor to the detection part. In accordance with the present invention, the fastening pressure of the fastener fastened with the fastening part of the structure mold is sensed through the pressure sensor to monitor a loosening state of the fastener, and the detection part transmits the sensing signal from the pressure sensor to the separated place to enable a remote place to check the current state of the fastener, and, meanwhile, an LED for displaying the fastening state of the fastener is provided in the detection part such that a necessary action can be immediately taken in the site in accordance with the state of the fastener, and, moreover, the detection part protects the head of the bolt of the fastener by covering the same with the embedded safety cap, and protects components constituting the detection part from an external environment, thereby increasing the durability of the product.

Description

Flip type pressure sensing device for detecting loosening of form fasteners

The present invention monitors the loosening state of the fastener by sensing the fastening pressure of the fastener mounted on the fastening part of the structure form with a pressure sensor, and the detecting unit transmits the detection signal from the pressure sensor to a remote location to check the current state of the fastener at a remote location At the same time, the detection unit is equipped with an LED to indicate the fastening state of the fastener, so that necessary measures can be taken immediately on site depending on the condition of the fastener, and the detection unit covers the bolt head of the fastener with a built-in safety cap. It relates to a flip-type pressure sensing device for detecting loosening of a mold fastener that can protect and protect parts constituting a detection unit from the external environment, thereby increasing the durability of a product.

In general, when constructing structures such as bridges or buildings, structures are fastened with various fasteners, and among these fasteners, bolts and nuts having advantages in the convenience of fastening and maintaining fastening force are widely used.

After fastening the structure, there is a problem of loosening due to vibration or external shock at the structure or the fastening part of the bolt. A method to minimize it is used. In addition, special fasteners for preventing loosening of bolts and nuts by using threaded or other special shapes of bolts and nuts have been proposed.

However, it is impossible to prevent the loosening of the bolt and nut when used for a long time, even if a washer as described above or a special fastener is used. The risk of safety accidents is always present.

In addition, the structure formwork is provided with a fastening part for connecting a plurality of formwork panels constituting the formwork before concrete pouring and curing, and a plurality of fasteners composed of bolts and nuts are mounted on the fastening part of the formwork.

In this way, after the fastener is mounted on the fastening part of the formwork, concrete is poured and cured. Since a large load is applied to the formwork in the outward direction by the concrete poured into the formwork, the fastening state of the formwork fastening part is very important for safety. will act as a factor.

Therefore, there is a safety device to monitor the fastening state of the bolt and nut, that is, the fastening state of the bolt and nut installed in the formwork fastening part, from a remote location or at the site, and detect the loosening of the bolt and nut so that the supervisor or operator can recognize it. desperately needed

In addition, since bolts and nuts are often exposed to the outside, corrosion may occur due to rain or moisture, as well as being exposed to foreign substances such as dust, making dismantling work difficult or preventing safety accidents due to corrosion. The development of safety equipment for this is also urgently required.

Republic of Korea Patent Registration No. 10-1190618 (Registered on Oct. 8, 2012)

The present invention has been devised to solve the above problems,

The pressure sensor detects the tightening pressure of the fastener mounted on the fastening part of the structure form to monitor the loosening state of the fastener, and the detector transmits the detection signal from the pressure sensor to a remote location to check the current state of the fastener from a remote location. , and at the same time, the detection unit is equipped with an LED for displaying the fastening state of the fastener, so that necessary measures can be taken immediately in the field according to the state of the fastener, thereby improving safety.

Another object of the present invention is to protect the bolt head of the fastener by covering it with a safety cap, and to increase the durability of the product by protecting the internal parts from the external environment by having a detection unit built in the inside of the safety cap.

According to the present invention, since the connection part connecting the pressure sensor and the detection unit built in the safety cap is made of a flexible PCB (FPCB), it is possible to simplify the product configuration because the PCB board can not be placed inside the safety cap, and the pressure sensor and the detection unit are Another purpose is to prevent the loss of each component as the built-in safety cap is connected by the connection part.

A flip-type pressure sensing device for detecting loosening of a formwork fastener according to the present invention includes a fastening part of a formwork, and a fastener comprising a bolt and a nut mounted on the fastening part, and for detecting and displaying the fastening state of the fastener A safety device comprising: a pressure sensor disposed between the fastening part and the bolt head to sense a fastening pressure of the fastener; a safety cap covering the bolt head; a detection unit embedded in the safety cap, receiving a detection signal from the pressure sensor, transmitting it to a separate area, and displaying a fastening state of the fastener; and a connection unit for connecting the pressure sensor and the detection unit to transmit a detection signal from the pressure sensor to the detection unit.

The detection unit according to the present invention includes a communication module for transmitting the detection signal from the pressure sensor to a separate area, an LED disposed above the communication module to display the fastening state of the fastener, and a power supply disposed below the communication module It is characterized in that it comprises a battery to supply.

The connection part according to the present invention connects the communication module of the detection part and the pressure sensor, and is characterized in that it is a flexible PCB (FPCB) exposed to the outside.

The safety cap according to the present invention includes a main body in which the bolt head of the fastener is accommodated, a receiving part disposed on the upper part of the body to accommodate the detection part, disposed inside the body to surround the bolt head, and the pressure sensor and It is characterized in that it comprises an airtight member forming a close contact structure.

On the upper surface of the receiving part of the safety cap according to the present invention, a projection part made of a translucent material is further provided so that the status display by the LED of the detection part is projected to the outside.

Between the fastening part and the pressure sensor according to the present invention, an impact mitigating member for preventing an impact of the pressure sensor when the fastener is fastened is further provided.

A flip-type pressure sensing device for detecting loosening of a formwork fastener according to the present invention detects the fastening pressure of a fastener mounted on a fastening part of a structure form with a pressure sensor to monitor the loosening state of the fastener, and the detection unit detects a signal from the pressure sensor is transmitted to a remote location using a communication module to confirm the current state of the fastener from a remote location, and at the same time, the detection unit is equipped with an LED to display the fastening state of the fastener, so that necessary actions can be taken immediately at the site according to the state of the fastener. This can improve safety and prevent accidents in advance.

In addition, the present invention can increase the durability of the product by covering and protecting the bolt head of the fastener with a safety cap, and a detection unit is built in the inside of the safety cap to protect internal components from the external environment.

In addition, in the present invention, the connection part connecting the pressure sensor and the detection unit built in the safety cap is made of a flexible PCB (FPCB), so that the PCB board can not be placed inside the safety cap, so that the product configuration can be simplified, and the pressure sensor and the detection unit It is possible to prevent the loss of each component as the safety cap with the built-in is connected by the connection part.

In addition, the present invention is provided with an airtight member forming a close contact structure with the pressure sensor in the body of the safety cap to prevent moisture, foreign substances, etc. from entering the inside of the safety cap, thereby providing dust-proof and moisture-proof functions to extend the service life for a long time economic efficiency can be improved.

In addition, the present invention can ensure the durability of the pressure sensor by arranging a shock absorbing member between the fastening part and the pressure sensor to prevent the pressure sensor from being damaged by the fastening pressure when the fastener is fastened.

1 is a perspective view showing a flip-type pressure sensing device for detecting loosening of a formwork fastener according to the present invention;
2 is a plan view showing a flip-type pressure sensing device for detecting loosening of a formwork fastener according to the present invention;
3 is a cross-sectional view showing a flip-type pressure sensing device for detecting loosening of the formwork fastener according to the present invention.
4 and 5 are a perspective view and a side view showing another embodiment of a flip-type pressure sensing device according to the present invention.

In order to explain the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, preferred embodiments of the present invention are exemplified below and will be described with reference to them.

First, the terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention, and the singular expression may include a plural expression unless the context clearly indicates otherwise. In addition, in this application, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other It should be understood that this does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.

In describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

First, the structural formwork according to the present invention is for pouring and curing concrete when constructing a building or structure such as a bridge or building, and refers to a formwork in a comprehensive sense including a conventional formwork.

As shown in FIGS. 1 to 3, the flip-type pressure sensing device for detecting loosening of the mold fastener according to the present invention includes a washer-type pressure sensor 10 disposed between the fastening part F and the bolt head 1a and , a safety cap 20 covering the bolt head 1a, a detection unit 30 built in the safety cap 20, and a connection unit 40 for connecting the pressure sensor 10 and the detection unit 30 is composed by

First, according to the present invention, the structural formwork is provided with a fastening part (F) for connecting a plurality of formwork channels constituting the formwork before pouring and curing concrete, and a bolt (1) and a nut (3) to the fastening part (F) of the formwork ), a plurality of fasteners (FD) are mounted.

In this way, after the fastener FD is mounted on the fastening part F of the formwork, concrete is poured and cured. The fastening state of (F) acts as a very important safety factor.

Therefore, it is very important for safety to construct a form, and to check the fastening state of the fasteners (FD) in real time, as well as in a situation room or field in a remote or remote place, when pouring and curing concrete.

Accordingly, the present invention proposes a safety device that can check the fastening state of the fastener (FD) mounted on the fastening part (F) of the form in real time in a situation room in a separate area, as well as check it immediately in the field. Hereinafter, the detailed configuration constituting the safety device according to the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3 , the pressure sensor 10 according to the present invention has a fastening part ( It is disposed between F) and the bolt head 1a of the fastener FD.

In this case, the pressure sensor 10 is configured in the form of a washer so that the upper surface is in contact with the lower surface of the bolt head 1a of the fastener, and the lower surface is in contact with the fastening part (F). Therefore, the pressure sensor 10 applies a tightening pressure when the nut 3 is fastened to the bolt 1 of the fastener. In this state, the fastener FD is normally fastened, but if the tightening pressure When a change occurs, it is preferable to be configured in the form of a load cell that can sense the pressure change value.

That is, the pressure sensor 10 detects and detects a pressure change value generated as the bolt 1 and the nut 3 are loosened from the tightening pressure when the fastener FD is mounted on the fastening part F. .

When such a pressure change value is sensed, a detection signal is transmitted to the detection unit 30 through the connection unit 40 to be described later so that it can be checked in a situation room in a remote area or in the field.

On the other hand, there is a risk of damage to the pressure sensor 10 due to a significant pressure applied when the fastener FD is fastened. ) is preferably placed. That is, the impact mitigating member 50 not only prevents damage from the pressure applied to the pressure sensor 10 when the fastener FD is fastened, but also serves as a buffer from external impact, thereby reducing the pressure sensor 10 . durability can be ensured. In this case, the impact mitigating member is preferably made of a rubber material or a material having elasticity. In this case, the shock mitigating member 40 is disposed attached to the lower surface of the pressure sensor 10 so that it can be mounted together when the pressure sensor 10 is mounted. When the pressure sensor 10 is mounted, the shock mitigating member (50) It is also desirable to eliminate problems such as being dropped or omitted, and to promote work convenience.

1 to 3, the safety cap 20 according to the present invention is configured to cover the bolt head 1a of the fastener FD, and a detection unit 30 to be described later is embedded therein. configured to be able to

That is, the safety cap 20 includes a main body 21 in which the bolt head 1a of the fastener FD is accommodated, an accommodation part 23 disposed on the main body 21 and receiving the detection unit 30 , and the main body. (21) is disposed inside and surrounds the bolt head (1a) and is configured to include an airtight member (25) forming a close contact structure with the pressure sensor (10).

The inside of the main body 21 of the safety cap 20 is provided with a hexagonal space portion to correspond to the shape of the bolt head 1a, and the bolt head 1a is installed in the space portion of the main body 21 in such a way that the bolt head 1a is press-fitted. It is configured to prevent the safety cap 20 from being separated from the bolt head 1a.

In addition, the receiving part 23 of the safety cap 20 is disposed on the upper part of the main body 21 so that the detection part 30 is mounted on the inner space. In this case, the upper surface of the accommodating part 23 is preferably provided with a projection part 23a made of a translucent material so that the LED 33 light of the detection part 30 can be transmitted.

In addition, the airtight member 25 of the safety cap 20 has a recess 21a formed in the lower portion of the main body 21, and the airtight member 25 is inserted into the recess 21a and mounted. In this case, the airtight member 25 is in close contact with the pressure sensor 10 disposed under the bolt head 1a to maintain airtightness. Therefore, it prevents the penetration of foreign substances such as rain, moisture, dust, etc. into the safety cap 20, and thereby protects the corrosion of the bolt head 1a, internal components, and more specifically, the parts constituting the detection unit 30, thereby protecting the product. durability can be ensured. This can obtain the effect of improving economic efficiency by extending the service life of the product for a long time through the provision of dust-proof and moisture-proof functions to the interior of the safety cap 20 .

As shown in FIG. 3 , the detection unit 30 according to the present invention is embedded in the safety cap 20 , receives the detection signal from the pressure sensor 10 , and transmits it to a separate place, and the fastener (FD) is fastened in the field. It is configured to display so that the status can be checked.

The detection unit 30 includes a communication module 31 for transmitting a detection signal from the pressure sensor 10 to a separate area, and an LED disposed on the communication module 31 to display the fastening state of the fastener FD. (33), and the communication module 31 is disposed below the battery 35 for supplying power.

The communication module 31 of the detection unit 30 detects the fastening pressure value of the fastener FD sensed by the pressure sensor 10 and displays the current fastening state of the fastener FD to the PC or It will be sent to the administrator's mobile. Accordingly, it is possible to remotely check the fastening state of the formwork fastener (FD) in the field.

To this end, the communication module 31 preferably uses a beacon device, which is a short-range wireless communication device based on Bluetooth Low Energy (BLE).

In addition, the LED 33 of the detection unit 30 is disposed on the communication module 31 and displays the fastening state of the fastener FD according to the detection signal from the pressure sensor 10 in various light-emitting colors to display the current fastener FD. The state of the device is displayed, and an efficient operation of the device is enabled by additionally indicating a power supply or a shortage of the battery 35 .

For example, when the light emission color of the LED 33 is green, it indicates that the fastening state of the fastener FD is good, and if the fastening pressure value of the fastener FD sensed by the pressure sensor 10 changes, the bolt (1) ) and the nut (3) are in a loosened state, they are displayed in a different light-emitting color or configured to flash so that the field can recognize that the fastener (FD) is loosened.

In addition, it is preferable to recognize the state that the power is 'on' when the light emission color of the LED 33 is red, and to take measures such as checking the power when the LED 33 does not emit light.

In addition, when the light emission color of the LED 33 is orange, it is preferable to take measures such as replacement of the battery 35 as indicating a state in which the battery 35 is insufficient.

The LED 33 of the detection unit 30 enables recognition of the fastening state of the fastener FD through the light emitting color as well as in a remote area, and to check the lack of power or battery 35 in the field. By doing so, it is desirable to enable rapid on-site response so that more efficient monitoring and prompt safety measures can be taken.

In this case, since the LED 33 of the detection unit 30 is built in the receiving unit 23 of the safety cap 20, the upper surface of the receiving unit 23 is a translucent projection unit so that the emitted light can be projected to the outside. It is also preferable that 23a is configured so that the state display by the LED 33, that is, the emitted light of the LED 33 for each state, can be better projected to the outside.

Furthermore, the battery 35 of the detection unit 30 is disposed under the communication module 31 to supply power. In this case, the battery 35 is preferably a 3V coin type battery 35 .

As shown in FIGS. 1 to 3 , the connection unit 40 according to the present invention connects the pressure sensor 10 and the detection unit 30 . In this case, the connection unit 40 includes the pressure sensor 10 and the detection unit 30 . ) will also serve to connect the safety cap 20 including the.

First, the connection unit 40 is composed of a flexible, flexible PCB 41, so that there is no need to use a PC board disposed therein to configure the detection unit 30, thereby simplifying the configuration of the product.

In this case, since the flexible PCB 41 is exposed to the outside, it is preferable to form an outer shell with a protective shield to prevent damage caused by external shocks, water, moisture, or the like.

Next, the connection unit 40 is connected to the pressure sensor 10 and the detection unit 30, more specifically, the communication module 31 to transmit the detection signal or data of the pressure sensor 10 to a separate area, in this case the connection unit ( 40) is advantageous in that it is composed of a flexible flexible PCB 41 and can mitigate damage caused by bending of the signal line after a safety device is mounted on the fastener FD.

In addition, the connection unit 40 prevents the safety cap 20 including the pressure sensor 10 and the detection unit 30 from being separated from each other so as to be integrally connected, thereby eliminating the risk of loss of the components.

Furthermore, in the present invention, in addition to the connection unit 40, that is, the flexible PCB 41, as described above, a PCB substrate is built into the receiving unit 23 of the safety cap and connected to the detection unit 30, as shown in Figs. Likewise, it is also possible to introduce a wire cable 43 for connecting the PCB substrate and the pressure sensor 10 . In this case, the power cable 43 is provided in a form in which 8 general wires are embedded in a soft covering, thereby performing a function similar to that of a flexible PCB. That is, the power cable 43 connects the safety cap 20 and the pressure sensor 10 to prevent the safety cap 20 and the pressure sensor 10 from being separated, thereby eliminating the risk of loss of components.

In this case, the connection part 40, that is, the flexible PCB 41 and the power cable 43, connects the safety cap 20 and the pressure sensor 10, and the pressure sensor 10 is connected to the fastener FD and the safety cap. When mounting (20) to the bolt head (1a), the pressure sensing device can be implemented in a flip form.

As such, the present invention has been described with reference to one embodiment shown in the drawings, but this is merely exemplary, and various modifications and equivalent other embodiments are possible by those skilled in the art. will understand

Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

F : Fastener FD : Fastener
1: bolt 1a: bolt head
3: Nut
10: pressure sensor
20: safety cap
21: main body 21a: groove
23: storage unit
23a: projection unit 25: airtight member
30: detection unit
31: communication module 33: LED
35 : battery
40: connection
41: flexible pcb 43: electric wire cable
50: shock mitigating member

Claims (6)

It includes a fastener (FD) consisting of a fastening part (F) of the formwork, a bolt (1) and a nut (3) mounted on the fastening part (F), and detecting the fastening state of the fastener (FD), In the safety device for display,
a pressure sensor (10) disposed between the fastening part (F) and the bolt head (1a) to sense the fastening pressure of the fastening part (FD);
a safety cap 20 covering the bolt head 1a;
a detection unit (30) built into the safety cap (20), receiving a detection signal from the pressure sensor (10), transmitting it to a separate area, and displaying the fastening state of the fastener (FD); and
a connection unit 40 for connecting the pressure sensor 10 and the detection unit 30 to transmit a detection signal from the pressure sensor 10 to the detection unit 30;
A flip-type pressure sensing device for detecting loosening of mold fasteners, including:
According to claim 1, wherein the detection unit (30)
A communication module 31 for transmitting a monitoring signal from the pressure sensor 10 to a distant place;
an LED 33 disposed on the communication module 31 to display the fastening state of the fastener FD;
A flip-type pressure sensing device for detecting loosening of a mold fastener, characterized in that it comprises a battery (35) disposed under the communication module (31) to supply power.
3. The method of claim 2,
The connection part 40 connects the communication module 31 of the detection part 30 and the pressure sensor 10, but is a flexible PCB 41 (FPCB) exposed to the outside. Flip type pressure sensing device for
According to claim 2, wherein the safety cap (20)
a body 21 in which the bolt head 1a of the fastener FD is accommodated;
a receiving part 23 disposed on the upper part of the main body 21 to accommodate the detection part 30;
Flip type for detecting loosening of a mold fastener, which is disposed inside the body 21 to surround the bolt head 1a and includes an airtight member 25 forming a close contact structure with the pressure sensor 10 pressure sensing device.
5. The method of claim 4,
On the upper surface of the receiving part 23 of the safety cap 20, a projection part 23a made of a translucent material is further provided so that the status display by the LED 33 of the detection part 30 is projected to the outside. Flip type pressure sensing device for detecting loosening of formwork fasteners.
The method of claim 1,
Between the fastening part (F) and the pressure sensor (10), a shock mitigating member (50) for preventing the impact of the pressure sensor (10) when the fastener (FD) is fastened, characterized in that Flip-type pressure sensing device for detecting loosening of formwork fasteners.

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