CN115165754B - A high-concentration laser methane sensor assembly for coal mines - Google Patents

Abstract

The invention relates to the technical field of methane detection, in particular to a high-concentration laser methane sensor assembly for a coal mine. The invention provides a high-concentration laser methane sensor assembly for a coal mine, wherein a fixing part is hinged to the side wall of the back of a sensor body and is suitable for sealing an air inlet end; when the sensor body fixing device works, the fixing part is rotated in the circumferential direction, so that the movable end of the fixing part is turned upwards by 180 degrees to fix the sensor body; during transportation, the power line and the air inlet pipe are wound on the outer wall of the sensor body, and the fixing part is rotated in the circumferential direction so that the movable end of the fixing part is turned downwards by 180 degrees to fix the power line and the air inlet pipe; the movable end of the fixed part covers the lower part of the air inlet end to seal the air inlet end. The invention has simple structure, achieves the effect of fixing the power line, the air inlet pipe and the air inlet end by turning the fixing part downwards, improves the safety of the equipment in the transportation process and reduces the volume of the equipment at the same time.

Description

A high-concentration laser methane sensor assembly for coal mines

technical field

The invention relates to the technical field of methane detection, in particular to a high-concentration laser methane sensor assembly for coal mines.

Background technique

The methane sensor is used in the coal mine safety detection system to continuously monitor the methane concentration in coal mine lanes, mining working faces, goafs, return air tunnels, electromechanical caverns, etc. When the methane concentration exceeds the limit, it can automatically send out sound and light alarms, It can be used by coal mine underground operators, methane detection personnel, underground management personnel, etc., and can also be used for fixed use in the above places.

During the transportation or movement of the methane sensor, the power cord and the sensor intake pipe are fixed on the sensor body, which takes up a lot of space, which is not conducive to the transportation and packaging; and the sensor body is collected and transported separately from the power cord or the sensor intake pipe, which increases the time for collection and transportation. Trouble; in the prior art, the power cord and sensor intake pipe are often removed from the sensor body and wound outside the sensor body. Although the winding collection method saves space, the power cord or sensor intake pipe is easy to loose ; and during the removal of the sensor air intake pipe, the air inlet on the sensor body that is compatible with the sensor air intake pipe is exposed, which will easily cause particles such as dust to enter the sensor body, and ultimately affect the use of the sensor. Therefore, it is necessary to develop a high-concentration laser methane sensor assembly for coal mines.

Contents of the invention

The object of the invention is to provide a high-concentration laser methane sensor assembly for coal mines.

In order to solve the above technical problems, the present invention provides a high-concentration laser methane sensor assembly for coal mines, including: a sensor body, a terminal, an air inlet and a fixing part, the terminal is fixed on one side of the sensor body, the The terminal is electrically connected to the sensor body;

The air intake end is fixed at the lower end of the sensor body, the air intake end is hollow inside, and the air intake end communicates with the sensor body;

The fixing part is hinged on the back side wall of the sensor body, and the fixing part is suitable for sealing the air inlet; wherein

When working, rotate the fixed part in a circumferential direction so that the movable end of the fixed part turns upwards by 180° to fix the sensor body;

During transportation, the power cord and the air intake pipe are wrapped around the outer wall of the sensor body, and the fixed part is rotated circumferentially so that the movable end of the fixed part is turned down 180° to fix the power cord and the air intake pipe;

The movable end of the fixing part is covered on the lower part of the air inlet to seal the air inlet.

Preferably, the fixing part includes: a support plate, a rotating shaft, a fixing plate and two support columns, and the support plate is vertically fixed on the back side wall of the sensor body;

The supporting plate is provided with a first through hole adapted to the rotating shaft, the rotating shaft is rotatably arranged in the first through hole, and the two ends of the rotating shaft respectively protrude from the supporting plate both ends of

The upper ends of the two support columns and the two ends of the respective rotating shafts are vertically fixed to each other;

The fixing plate is horizontally sleeved on the outer wall of the supporting column; wherein

When fixing the sensor body, drive the fixing plate to overturn 180° with the rotating shaft as the axis, so that the fixing plate is located above the sensor body;

When sealing the air inlet end, the fixed plate is driven to turn downward by 180° with the rotating shaft as the axis, so that the fixed plate abuts against the air inlet end.

Preferably, the fixing part further includes two limit columns, one limit column corresponds to one support column, and the limit column is telescopically arranged on the upper end of the support column; wherein

After pressing the limiting column and shrinking into the supporting column, the fixing plate can be turned downward or downward by 180° with the rotating shaft as the axis.

Preferably, the length of the limiting column is greater than the distance from the shaft center to the back side wall of the sensor body.

Preferably, the upper end of the support column is provided with a telescopic slot, and the telescopic slot is arranged axially along the support column;

A compression spring is arranged in the telescoping slot, one end of the compression spring is fixed at the lower end of the limiting post, and the other end of the compression spring is fixed at the bottom wall of the telescopic slot.

As a preference, several limit joints are fixed at equal intervals on the outer wall of the support column, each of the limit joints is hourglass-shaped, and the middle outer wall of the limit joint is in the shape of a circular arc that matches the power line or the air intake pipe. ;in

After the power cord and the intake pipe are wrapped around the sensor body, the support column is turned downwards so that the outer wall of the limiting section is against the outer wall of the power cord or the intake pipe.

Preferably, the fixing plate is rectangular, and two second through holes adapted to the limiting joints are opened on the fixing plate;

Two sliding grooves are opened on the fixing plate, and one sliding groove corresponds to a second through hole;

Each sliding groove is provided with a telescopic spring and a limiting block, one end of the telescopic spring is fixed on the side wall of the sliding groove, and the other end of the telescopic spring is fixed on the side wall of the limiting block;

The limiting block is adapted to the limiting joint, and the limiting block protrudes from the sliding groove; wherein

When the fixing plate is pressed to approach or move away from the rotating shaft, the limiting joint can push the limiting block to shrink inward, so that the fixing plate can move along the axial direction of the support column.

Preferably, a sealing ring suitable for the air inlet is fixed on the fixing plate, and the sealing ring is suitable for sealing the air inlet.

Preferably, the sensor body is rectangular, and several limiting pieces are arranged at equal intervals on each rectangular side in the width direction of the sensor body, and the distance between two adjacent limiting pieces is larger than that of the power line or the air intake pipe. the outer diameter.

Preferably, the sealing ring is annular, and the outer wall of the sealing ring is corrugated.

The beneficial effect of the present invention is that a high-concentration laser methane sensor assembly for coal mines of the present invention achieves the effect of fixing the power line and the air intake pipe and sealing the air intake end through the cooperation of the sensor body and the fixing part. The fixed plate is turned upward by 180° with the rotating shaft as the axial direction, so that the fixed plate is located above the sensor body; to facilitate fixing the sensor body; during transportation, drive the fixed plate with the rotating shaft as the axial direction Flip down 180° so that the fixed plate is against the air intake end to prevent particles such as dust from entering the air intake end; at the same time, the limit joint can limit the power cord and the air intake pipe to prevent the wire ends from being scattered in the air. The outer wall of the sensor body facilitates the transportation of the sensor body and reduces the volume of the sensor body during transportation.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a perspective view of a preferred embodiment of a high-concentration laser methane sensor assembly for coal mines of the present invention;

Fig. 2 is a perspective view of the fixing part of the present invention;

Fig. 3 is the longitudinal sectional view of the spacer column and the support column of the present invention;

Fig. 4 is the right side view of a kind of high-concentration laser methane sensor assembly for coal mine of the present invention;

Fig. 5 is a schematic diagram of the first fixed state of the sensor body of the present invention;

Fig. 6 is a schematic diagram of the second fixed state of the sensor body of the present invention;

Fig. 7 is a perspective view of the fixing plate of the present invention.

In the picture:

1. Sensor body; 10. Limit sheet; 2. Terminal; 3. Air intake end; 4. Fixed part; 41. Support plate; 42. Rotating shaft; 43. Fixed plate; 431. Sliding groove; 432. Limit Block; 433, telescopic spring; 434, sealing ring; 44, support column; 441, telescopic groove; 442, compression spring; 443, limit joint; 45, limit post.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

As shown in Figures 1 to 7, a high-concentration laser methane sensor assembly for coal mines of the present invention includes: a sensor body 1, a terminal 2, an air inlet 3 and a fixing part 4, and the terminal 2 is fixed on the On one side of the sensor body 1, the terminal 2 is electrically connected to the sensor body 1; the terminal 2 is electrically connected to the power supply through a power line, which is convenient for providing electric energy for the sensor body 1; the gas containing methane passes through the After the air inlet port 3 enters the sensor body 1, the laser detection device inside the sensor body 1 can detect the concentration of methane gas in the air, and send out an audible and visual alarm. At the same time, in order to better detect the concentration of methane gas , the sensor body 1 is also provided with a liquid crystal display device to display specific methane concentration values. The air intake end 3 is fixed on the lower end of the sensor body 1, and the air intake end 3 is used as the main methane inlet fracture of the sensor body 1. The interior of the air intake end 3 is hollow, and the air intake end 3 is connected to the The sensor body 1 is connected; the lower end of the air intake end 3 is fixed with an air intake pipe to facilitate the sensor body 1 to detect and collect air in a designated area; the fixed part 4 is hinged on the back side wall of the sensor body 1, and the fixed The part 4 is suitable for sealing the air inlet end 3; wherein, during operation, the movable end of the fixed part 4 is driven to rotate around the hinge point as the axis, so that the movable end of the fixed part 4 turns upwards by 180° , at this time, the movable end of the fixing part 4 is suitable for fixing on the wall or beam to fix the sensor body 1; and when the sensor assembly needs to be packaged and transported, firstly separate the power line and the air intake pipe from the sensor body 1 , and then the power cord and the air intake pipe are wound on the outer wall of the sensor body 1, the overall occupied volume of the device; the movable end of the fixed part 4 is driven to rotate around the hinge point as the axis, so that the fixed part 4 The movable end is turned down 180°, so that the outer wall of the power cord and the intake pipe is against the movable end of the fixed part 4, so as to achieve the effect of limiting and fixing the power cord and the intake pipe, preventing the power cord and the intake pipe from being damaged during transportation. Scattering of thread ends or the end of the intake pipe occurs during the process. At the same time, the movable end of the fixed part 4 can also seal the air inlet 3 to prevent dust particles in the environment from entering the sensor body 1 . The present invention has a simple structure, and the setting of the fixing part 4 not only improves the service life of the equipment, but also reduces the volume of the sensor body 1 during transportation.

Preferably, the fixed part 4 includes: a support plate 41, a rotating shaft 42, a fixed plate 43 and two support columns 44, the support plate 41 is vertically fixed on the back side wall of the sensor body 1; The length direction of the sensor body 1 is arranged; the support plate 41 is provided with a first through hole adapted to the rotating shaft 42, and the rotating shaft 42 is rotatably arranged in the first through hole, and The two ends of the rotating shaft 42 respectively protrude from the two ends of the supporting plate 41; the upper ends of the two supporting columns 44 are vertically fixed to the two ends of the rotating shaft 42 respectively; the fixing plate 43 is horizontally sleeved on the The outer wall of the support column 44; when the fixed plate 43 is pressed, the fixed plate 43 can move axially along the outer wall of the support column 44, and the setting that the fixed plate 43 can move axially along the support column 44 improves the sensor body. 1, the distance between the fixing plate 43 and the sensor body 1 can be adjusted according to different actual sites, so as to adapt to different usage sites. Wherein, when fixing the sensor body 1, drive the fixing plate 43 to turn upwards 180° with the rotating shaft 42 as the axial direction, so that the fixing plate 43 is located above the sensor body 1; seal the air inlet end At 3 o'clock, the fixing plate 43 is driven to turn downwards by 180° with the rotating shaft 42 as the axis, so that the fixing plate 43 abuts against the intake port 3 .

At the same time, according to the difference in the fixed site of the sensor body 1, the relative position between the fixed plate 43 and the sensor body 1 can be adjusted, as shown in Figure 4, when the sensor body 1 is fixed on the wall, it is turned upwards The fixing plate 43 extends to a side away from the sensor body 1 , so that the fixing plate 43 can be hung on a raised fixture on the wall. As shown in Figure 5, when the sensor body 1 is fixed on the beam, the fixing plate 43 is turned up so that it extends toward the side close to the sensor body 1, and at the same time, the fixing plate 43 is pressed to move toward the sensor. The main body 1 moves in one direction, so that the sensor main body 1 and the fixing plate 43 can clamp the beam from the upper and lower sides, so as to achieve the effect of fixing the sensor main body 1 .

In order to prevent the fixing part 4 from turning down and damaging the intake pipe, the fixing part 4 also includes two limit columns 45, one limit column 45 corresponds to one support column 44, and the limit column 45 is telescopic Set on the upper end of the support column 44; the length of the limit column 45 is greater than the distance from the axis of the rotating shaft 42 to the back side wall of the sensor body 1; the length of the limit column 45 is set on the fixed plate 43 When turning downwards with the hinge point as the axis, the limiting column 45 is against the side wall of the sensor body 1 to prevent the fixing plate 43 from turning downwards and colliding with the intake pipe. When the fixed plate 43 needs to be overturned, press the limiting column 45 to shrink in the supporting column 44, so that the fixed plate 43 can be turned downward or downward by 180° with the rotating shaft 42 as the axis .

In order to facilitate the contraction and movement of the limit post 45, a telescopic slot 441 is provided at the upper end of the support post 44, and the telescopic slot 441 is arranged axially along the support post 44; Position ring, the lower end of the limit post 45 is fixed with a limit disc, the outer diameter of the limit disc is greater than the inner diameter of the limit ring, and the outer diameter of the limit disc is smaller than the inner diameter of the telescopic groove 441 , the arrangement of the limiting plate and the limiting ring can prevent the limiting column 45 from falling off from the telescopic groove 441 . A compression spring 442 is disposed in the telescopic slot 441 , one end of the compression spring 442 is fixed to the lower end of the limiting post 45 , and the other end of the compression spring 442 is fixed to the bottom wall of the telescopic slot 441 .

In order to facilitate the positioning and fixing of the power cord and the intake pipe, the outer wall of the support column 44 is fixed with a number of spacer joints 443 equidistantly along the axial direction, each of the spacer joints 443 is hourglass-shaped, and the outer wall of the spacer joint 443 From both ends to the middle, it is in the shape of a circular arc suitable for the power cord or the intake pipe; wherein, after the power cord and the intake pipe are wound around the sensor body 1, the fixed plate 43 is driven to take the rotating shaft 42 as the axial direction Flip down the fixing plate 43, so that the fixing plate 43 is against the air intake end 3, and at this moment, the outer wall of the limiting joint 443 is against the outer wall of the power cord or the intake pipe, thereby realizing limiting and fixing the power cord and the outer wall of the intake pipe. The effect of the intake pipe. Compared with the traditional way of winding the power cord and the intake pipe, the setting of the limit joint 443 improves the stability of fixing the power cord and the intake pipe. Further, the sensor body 1 has a rectangular shape, and several limiting pieces 10 are arranged at equal intervals on each rectangular side in the width direction of the sensor body 1, and the distance between two adjacent limiting pieces 10 is greater than that of the power supply. The outside diameter of the wire or intake tube. Every two limit pieces 10 correspond to one limit section 443. When winding the power cord and the air intake pipe, first wind the power supply line or the air intake pipe between the two limit pieces 10, and then turn down the The plate 43 is fixed so that the limiting section 443 can limit and fix the power cord and the air intake pipe from the outside.

In order to facilitate the positioning and fixing of the fixing plate 43, the fixing plate 43 is rectangular, and the fixing plate 43 is provided with two second through holes that are compatible with the limiting joint 443; 443 is suitable for inserting in the second through hole; The fixed plate 43 is provided with two sliding grooves 431, and one sliding groove 431 corresponds to a second through hole; Each sliding groove 431 is provided with a telescopic spring 433 and A limiting block 432, one end of the telescopic spring 433 is fixed on the side wall of the sliding groove 431, and the other end of the telescopic spring 433 is fixed on the side wall of the limiting block 432; The section 443 is adapted, the end of the limiting block 432 protrudes outward in an arc shape, and the limiting block 432 protrudes from the sliding groove 431; wherein, pressing the fixing plate 43 makes it close to or When away from the rotating shaft 42, the limiting joint 443 can push the limiting block 432 to shrink inwardly, so that the fixing plate 43 can move along the axial direction of the supporting column 44; When the plate 43 is fixed, the telescopic spring 433 pushes the limiting block 432 to make it against the outer wall of the limiting section 443, and the limiting block 432 can limit the limiting section 443 to prevent it from sliding up and down .

Preferably, the fixing plate 43 is fixed with a seal ring 434 suitable for the intake end 3 , and the seal ring 434 is suitable for sealing the intake end 3 . The sealing ring 434 is annular, and the outer wall of the sealing ring 434 is corrugated. When sealing, the sealing ring 434 is suitable for inserting into the inner wall of the air inlet 3 to seal the air inlet 3; The ring 434 can clean up the dust particles at the lower end of the inner wall of the air intake end 3 .

The above is based on the inspiration of the ideal embodiment of the present invention, and through the above description, relevant workers can completely make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (9)

1. A high concentration laser methane sensor subassembly for coal mine, comprising:

the sensor comprises a sensor body (1), a wiring terminal (2), an air inlet end (3) and a fixing part (4), wherein the wiring terminal (2) is fixed on one side of the sensor body (1), and the wiring terminal (2) is electrically connected with the sensor body (1);

the air inlet end (3) is fixed at the lower end of the sensor body (1), the air inlet end (3) is hollow, and the air inlet end (3) is communicated with the sensor body (1);

the fixing part (4) is hinged to the side wall of the back of the sensor body (1), and the fixing part (4) is suitable for sealing the air inlet end (3); wherein

When the sensor is in work, the fixing part (4) is rotated in the circumferential direction, so that the movable end of the fixing part (4) is turned upwards by 180 degrees to fix the sensor body (1);

during transportation, a power line and an air inlet pipe are wound on the outer wall of the sensor body (1), and the fixing part (4) is rotated in the circumferential direction so that the movable end of the fixing part (4) is turned downwards for 180 degrees to fix the power line and the air inlet pipe;

the movable end of the fixed part (4) is covered on the lower part of the air inlet end (3) to seal the air inlet end (3);

the fixing portion (4) includes: the sensor comprises a supporting plate (41), a rotating shaft (42), a fixing plate (43) and two supporting columns (44), wherein the supporting plate (41) is vertically fixed on the side wall of the back of the sensor body (1);

the supporting plate (41) is provided with a first through hole matched with the rotating shaft (42), the rotating shaft (42) is rotatably arranged in the first through hole, and two ends of the rotating shaft (42) respectively protrude out of two ends of the supporting plate (41);

the upper ends of the two supporting columns (44) are mutually and vertically fixed with the two ends of the rotating shaft (42) respectively;

the fixed plate (43) is horizontally sleeved on the outer wall of the supporting column (44); wherein

When the sensor body (1) is fixed, the fixing plate (43) is driven to turn upwards by 180 degrees by taking the rotating shaft (42) as an axial direction, so that the fixing plate (43) is positioned above the sensor body (1);

when the air inlet end (3) is sealed, the fixing plate (43) is driven to downwards turn for 180 degrees by taking the rotating shaft (42) as an axial direction, so that the fixing plate (43) is abutted against the air inlet end (3).

2. The laser methane sensor assembly of claim 1, wherein the sensor includes a plurality of laser diodes,

the fixing part (4) further comprises two limiting columns (45), one limiting column (45) corresponds to one supporting column (44), and the limiting columns (45) are arranged at the upper ends of the supporting columns (44) in a telescopic mode; wherein

After the limiting column (45) is pressed to retract towards the supporting column (44), the fixing plate (43) can be turned over by 180 degrees downwards or downwards by taking the rotating shaft (42) as an axis.

3. The laser methane sensor assembly of claim 2, wherein the sensor assembly is a laser methane sensor assembly for coal mines,

the length of the limiting column (45) is larger than the distance from the axis of the rotating shaft (42) to the side wall of the back of the sensor body (1).

4. The laser methane sensor assembly of claim 3, wherein the sensor is a laser methane sensor assembly,

the upper end of the supporting column (44) is provided with a telescopic groove (441), and the telescopic groove (441) is axially arranged along the supporting column (44);

a compression spring (442) is arranged in the telescopic groove (441), one end of the compression spring (442) is fixed at the lower end of the limiting column (45), and the other end of the compression spring (442) is fixed on the bottom wall of the telescopic groove (441).

5. The laser methane sensor assembly of claim 4, wherein the sensor is a laser methane sensor assembly,

a plurality of limiting joints (443) are fixed on the outer wall of the supporting column (44) at equal intervals, each limiting joint (443) is hourglass-shaped, and the outer wall of the middle part of each limiting joint (443) is arc-shaped and is matched with a power line or an air inlet pipe; wherein

After the power line and the air inlet pipe are wound on the sensor body (1), the supporting column (44) is turned downwards, so that the outer wall of the limiting joint (443) is abutted against the outer wall of the power line or the outer wall of the air inlet pipe.

6. The laser methane sensor assembly of claim 5, wherein the sensor housing is configured to receive a laser beam from a laser source,

the fixing plate (43) is rectangular, and two second through holes matched with the limiting joints (443) are formed in the fixing plate (43);

two sliding grooves (431) are formed in the fixing plate (43), and one sliding groove (431) corresponds to one second through hole;

an extension spring (433) and a limiting block (432) are arranged in each sliding groove (431), one end of each extension spring (433) is fixed to the side wall of each sliding groove (431), and the other end of each extension spring (433) is fixed to the side wall of each limiting block (432);

the limiting block (432) is matched with the limiting joint (443), and the limiting block (432) protrudes out of the sliding groove (431); wherein

When the fixing plate (43) is pressed to be close to or far away from the rotating shaft (42), the limiting block (432) can be pushed by the limiting joint (443) to contract inwards, so that the fixing plate (43) can move along the axial direction of the supporting column (44).

7. The laser methane sensor assembly of claim 6, wherein the sensor housing,

and a sealing ring (434) matched with the air inlet end (3) is fixed on the fixing plate (43), and the sealing ring (434) is suitable for sealing the air inlet end (3).

8. The laser methane sensor assembly of claim 7, wherein the sensor assembly is a laser methane sensor assembly,

the sensor body (1) is rectangular, a plurality of limiting pieces (10) are arranged on each rectangular edge of the sensor body (1) in the width direction at equal intervals, and the interval between every two adjacent limiting pieces (10) is larger than the outer diameter of the power line or the air inlet pipe.

9. The laser methane sensor assembly of claim 8, wherein the sensor assembly is a laser methane sensor assembly,

the sealing ring (434) is annular, and the outer wall of the sealing ring (434) is corrugated.

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