CN216719221U - Wearable alarm device for hazardous gas in closed space - Google Patents

Abstract

The utility model discloses wearable alarm equipment for hazardous gas in an enclosed space, which comprises a machine box, two binding bands and a PLC (programmable logic controller), wherein the two binding bands are respectively and fixedly connected to the left side wall and the right side wall of the machine box, the inner wall of the machine box is fixedly connected with a gas sensor corresponding to an air inlet hole, the inner bottom wall of the machine box is provided with a strip-shaped groove, the upper end of the strip-shaped groove is provided with a detachable cover plate, the upper end of the cover plate is fixedly connected with a driving motor, the inner wall of the strip-shaped groove is slidably connected with two impact blocks, the driving motor is connected with the impact blocks through a cam mechanism to drive the impact blocks to reciprocate along the inner wall of the strip-shaped groove, and the inner wall of the strip-shaped groove is fixedly connected with a limiting block corresponding to the impact blocks. According to the utility model, the fan-shaped cam is rotated by starting the driving motor, and the two impact blocks are repeatedly extruded to collide with the limiting block, so that vibration is generated at the nose bridge of an operator to warn the operator, thereby improving the safety of the operator.

Description

Wearable alarm device for hazardous gas in closed space

Technical Field

The utility model relates to the technical field of gas detection, in particular to wearable alarm equipment for harmful gas in a closed space.

Background

The limited space is closed or partially closed, is relatively isolated from the outside, has narrow access and exit, can not work for a long time by operating personnel, has poor natural ventilation, is easy to cause the accumulation of toxic and harmful, flammable and explosive substances or is a space with insufficient oxygen content, and generally needs to be provided with a plurality of protective equipment and gas detectors to ensure the safety of the operating personnel when the underground limited space operates.

However, the portable detector that is usually used is handheld or is held in the outside of a pocket of clothes, which is inconvenient for operators to work, and meanwhile, because the operators who work underground usually wear thicker work clothes, when the gas detector gives an alarm, the gas detector may be covered by the work clothes to reduce the alarm sound, the alarm effect is not good, which may lead to the situation that the operators cannot transfer in time, therefore, a wearable alarm device for harming gas in a closed space is provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides wearable alarm equipment for harmful gas in a closed space.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a wearable alarm device for hazardous gas in a closed space, which comprises a machine box, two binding bands and a PLC controller, the PLC controller is arranged in the case, the two binding bands are respectively and fixedly connected with the left side wall and the right side wall of the case, the lower end of the case is provided with a groove corresponding to the nose bridge, and the upper and lower ends of the case are both provided with air inlets through, the inner wall of the case is fixedly connected with a gas sensor corresponding to the air inlets, the inner bottom wall of the case is provided with a strip-shaped groove, the upper end of the strip-shaped groove is provided with a detachable cover plate, the upper end of the cover plate is fixedly connected with a driving motor, the inner wall of the strip-shaped groove is connected with two impact blocks in a sliding way, and the driving motor is connected with the impact block through a cam mechanism to drive the impact block to move back and forth along the inner wall of the strip-shaped groove, and the inner wall of the strip-shaped groove is fixedly connected with a limiting block corresponding to the impact block.

Preferably, the two binding bands are both elastic structures, and one ends of the two binding bands far away from the case are connected through two nylon fastening tapes.

Preferably, the inner wall of the groove at the lower end of the case is fixedly connected with a sponge cushion, and the case is obliquely arranged between the two binding bands.

Preferably, a plurality of clamping grooves are formed in the inner bottom wall of the case, the clamping grooves are uniformly distributed on the outer side of the strip-shaped groove, and the lower end of the cover plate is fixedly connected with a straight rod with the clamping grooves inserted.

Preferably, cam mechanism is including rotating the fan-shaped cam of connecting at bar inslot diapire, fan-shaped cam and driving motor's output fixed connection, and fan-shaped cam sets up between two striking pieces.

Preferably, the striking block is of a U-shaped structure, the striking block is connected with the limiting block through two springs, a telescopic rod is arranged between the two springs, and two ends of the telescopic rod are fixedly connected with the striking block and the limiting block respectively.

Compared with the prior art, the utility model has the beneficial effects that:

1. the cooperation through the CD-ROM drive motor, striking piece and the fan-shaped cam that sets up is used to reach and make fan-shaped cam pivoted effect through starting CD-ROM drive motor, be favorable to extrudeing two striking pieces repeatedly and make it bump with the stopper, and then produce vibrations in operation personnel bridge of the nose department, warn operation personnel, thereby improved operation personnel's security.

2. The machine box, the binding bands and the nylon thread gluing belt are matched to be used, so that the effect of connecting the two binding bands through the nylon thread gluing belt is achieved, the machine box is favorably worn at the nose bridge of an operator, gas near the nose of the operator can be conveniently monitored in real time, vibration is enabled to be located at the nose bridge of the operator, and the warning effect is better.

Drawings

Fig. 1 is a schematic view of a first viewing angle structure according to the present invention;

FIG. 2 is a schematic view of a second perspective structure according to the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of the internal structure of a strip groove according to the present invention;

fig. 5 is a partial enlarged view of the point a according to the present invention.

In the figure: the device comprises a machine box 1, a binding belt 2, a gas sensor 3, a strip-shaped groove 4, a cover plate 5, a driving motor 6, an impact block 7, a limiting block 8, a nylon fastening tape 9, a spongy cushion 10, a clamping groove 11, a straight rod 12, a sector cam 13, a spring 14 and a telescopic rod 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, a wearable alarm device for hazardous gas in an enclosed space comprises a machine box 1, two binding bands 2 and a PLC (programmable logic controller), wherein the PLC is the same as an existing S7-200CN type PLC, the PLC is installed in the machine box 1, the hazardous gas in the enclosed space is automatically detected through a carried gas sensor 3, the environmental characteristics and parameters such as the type and concentration of the hazardous gas are identified, and according to the severity of the hazardous gas, the hazardous gas is identified to be in a certain range through an alarm device worn on the body, so that automatic triggering alarm is performed, and accidents are avoided;

the case 1 is of a rectangular structure, the two binding bands 2 are fixedly connected to the left side wall and the right side wall of the case 1 respectively, the two binding bands 2 are of elastic structures, one ends, far away from the case 1, of the two binding bands 2 are connected through the two nylon fastening tapes 9, when the case is used, the concave surface at the lower end of the case 1 is attached to the nose bridge of an operator, the two binding bands 2 are wound to the back of the brain, the two binding bands 2 are connected through the nylon fastening tapes 9, the case 1 can be worn at the nose bridge of the operator, so that the gas near the nose of the operator can be monitored in real time conveniently, meanwhile, the case 1 can warn the operator, and the warning effect is better due to the fact that the nose bridge is sensitive;

the lower end of the case 1 is provided with a groove corresponding to the bridge of the nose, the inner wall of the groove at the lower end of the case 1 is fixedly connected with a sponge cushion 10, when the case 1 is worn on the face of an operator, the case 1 is separated from the bridge of the nose of the operator through the sponge cushion 10, the comfort of the operator is improved, the case 1 is obliquely arranged between two binding bands 2, so that the sponge cushion 10 is better attached to the bridge of the nose of a patient, the upper end and the lower end of the case 1 are respectively provided with an air inlet in a penetrating way, the inner wall of the case 1 is fixedly connected with a gas sensor 3 corresponding to the air inlet, the gas sensor 3 is the same as the conventional 045-011 type photo PID sensor, the inner bottom wall of the case 1 is provided with a strip-shaped groove 4, and the upper end of the strip-shaped groove 4 is provided with a detachable cover plate 5;

the inner bottom wall of the machine box 1 is provided with a plurality of clamping grooves 11, the clamping grooves 11 are uniformly distributed on the outer side of the strip-shaped groove 4, the lower end of the cover plate 5 is fixedly connected with a straight rod 12 in which the clamping grooves 11 are inserted, the upper end of the cover plate 5 is fixedly connected with a driving motor 6, the inner wall of the strip-shaped groove 4 is connected with two impact blocks 7 in a sliding manner, the driving motor 6 is connected with the impact blocks 7 through a cam mechanism, the impact blocks 7 are driven to move back and forth along the inner wall of the strip-shaped groove 4, the cam mechanism comprises a sector cam 13 which is rotatably connected with the inner bottom wall of the strip-shaped groove 4, the sector cam 13 is fixedly connected with the output end of the driving motor 6, when the gas sensor 3 detects dangerous gas, a signal is transmitted to the PLC, the PLC starts the driving motor 6, the driving motor 6 drives the sector cam 13 in the strip-shaped groove 4 to rotate, the sector cam 13 repeatedly extrudes the two impact blocks 7 when rotating, the two impact blocks 7 continuously collide with the two limit blocks 8, thereby generating vibration;

sector cam 13 sets up between two striking pieces 7, be convenient for sector cam 13 extrudees two striking pieces 7 repeatedly, the stopper 8 that the inner wall fixedly connected with of bar groove 4 corresponds with striking piece 7, striking piece 7 is the U-shaped structure, and striking piece 7 is connected through two springs 14 with stopper 8, two springs 14's both ends respectively with strike piece 7 and stopper 8 fixed connection, it resets to drive striking piece 7 through spring 14, be convenient for sector cam 13 extrudes striking piece 7 once more, set up telescopic link 15 between two springs 14, telescopic link 15's both ends respectively with striking piece 7 and stopper 8 fixed connection, better stability when making striking piece 7 remove.

The working principle of the utility model is that when the utility model is used, the concave surface at the lower end of the case 1 is attached to the nose bridge of an operator, the two binding bands 2 are wound to the brain, the two binding bands 2 are connected through the nylon thread gluing tape 9, the case 1 is favorably worn at the nose bridge of the operator, the gas near the nose of the operator is conveniently monitored in real time, the case 1 can warn the operator, the outside gas enters the interior through the air inlet hole on the case 1 and is monitored in real time through the gas sensor 3 in the case 1, when the gas sensor 3 detects dangerous gas, a signal is transmitted to the PLC controller, the PLC controller starts the driving motor 6, the driving motor 6 drives the fan-shaped cam 13 in the strip-shaped groove 4 to rotate, the fan-shaped cam 13 repeatedly extrudes the two impact blocks 7 when rotating, and the two impact blocks 7 continuously collide with the two limit blocks 8, thereby produce vibrations, warn the operation personnel to the security of operation personnel has been improved, because the quick-witted box 1 is installed on operation personnel's the bridge of the nose, warning effect is better, warns operation personnel, thereby has improved operation personnel's security.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the utility model concepts of the present invention in the scope of the present invention.

Claims (6)

1. A wearable alarm device for harm gas in a closed space comprises a machine box (1), two binding bands (2) and a PLC (programmable logic controller), wherein the PLC is installed in the machine box (1), and is characterized in that the two binding bands (2) are respectively and fixedly connected to the left side wall and the right side wall of the machine box (1), the lower end of the machine box (1) is provided with a groove corresponding to the bridge of the nose, the upper end and the lower end of the machine box (1) are respectively provided with an air inlet in a penetrating manner, the inner wall of the machine box (1) is fixedly connected with a gas sensor (3) corresponding to the air inlet, the inner bottom wall of the machine box (1) is provided with a strip-shaped groove (4), the upper end of the strip-shaped groove (4) is provided with a detachable cover plate (5), the upper end of the cover plate (5) is fixedly connected with a driving motor (6), and the inner wall of the strip-shaped groove (4) is slidably connected with two impact blocks (7), and the driving motor (6) is connected with the impact block (7) through a cam mechanism to drive the impact block (7) to move along the inner wall of the strip-shaped groove (4) in a reciprocating manner, and the inner wall of the strip-shaped groove (4) is fixedly connected with a limiting block (8) corresponding to the impact block (7).

2. The wearable alarm device for hazardous gas in enclosed space according to claim 1, wherein both of the two binding bands (2) are elastic structures, and one ends of the two binding bands (2) far away from the case (1) are connected through two nylon fastening tapes (9).

3. A wearable alarm device for hazardous gas in enclosed space according to claim 1, characterized in that a sponge pad (10) is fixedly connected to the inner wall of the groove at the lower end of the case (1), and the case (1) is obliquely arranged between the two binding bands (2).

4. The wearable alarm device for hazardous gas in closed space according to claim 1, wherein a plurality of clamping grooves (11) are formed in the inner bottom wall of the case (1), the clamping grooves (11) are uniformly distributed on the outer side of the strip-shaped groove (4), and a straight rod (12) inserted into the clamping grooves (11) is fixedly connected to the lower end of the cover plate (5).

5. Wearable alarm device for hazardous gas in enclosed space according to claim 1, wherein the cam mechanism comprises a sector cam (13) rotatably connected to the inner bottom wall of the strip-shaped groove (4), the sector cam (13) is fixedly connected with the output end of the driving motor (6), and the sector cam (13) is arranged between the two impact blocks (7).

6. The wearable alarm device for endangering gas in enclosed space according to claim 1, characterized in that the impact block (7) is of a U-shaped structure, the impact block (7) is connected with the limiting block (8) through two springs (14), an expansion link (15) is arranged between the two springs (14), and two ends of the expansion link (15) are fixedly connected with the impact block (7) and the limiting block (8) respectively.

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