Protective device for hanging methane sensor on coal mining working face

Abstract

The utility model discloses a coal mining working face methane sensor hanging protection device, which relates to the technical field of mining monitoring equipment, and comprises a vertically arranged support rod, a methane sensor fixing frame is arranged above the support rod, and a portable methane detection alarm apparatus placing frame is arranged at the side part of the methane sensor fixing frame; a top plate hook is arranged above the methane sensor fixing frame; the lower part of the supporting rod is sleeved with a fixing device for limiting the lower part of the supporting rod; the device is convenient to install, data checking is convenient, and working hours are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining monitoring equipment technical field, concretely relates to a kind of coal mine mining working face methane sensor hanging protection device. BACKGROUND

[0002] In "Coal Mine Safety Monitoring System and Inspection Instrument Use Management Standard" (AQ1029-2019), it is stipulated that methane sensors should be hung vertically above the roadway, with a distance of not more than 300mm from the roof and not less than 200mm from the sidewall of the roadway. It is also required to use a portable methane detection alarm or a portable optical methane detector to compare with the methane sensor every day, and report the records and inspection results to the ground central station operator. When the reading error of the two is greater than the allowed error, the larger reading is used as the basis to take safety measures, and the two instruments should be adjusted within 8 hours.

[0003] In actual operation, it is often necessary for a dedicated person to carry a portable methane detection alarm to each detection point to guard and detect the values at different time periods, and to compare them with the detection values of the methane sensor. This operation is inconvenient, time-consuming and labor-intensive. Moreover, since the density of methane is less than that of air, methane mainly accumulates in the high places of the mine tunnel. The data detected by the artificial carrying of the portable methane detection alarm often deviates from the values detected by the methane sensor located at the high place.

[0004] Secondly, the environment in the mine tunnel is complex, the mine tunnel is winding and narrow, the inner wall is uneven, and the bottom of the mine tunnel is muddy and humid, making it difficult to install and fix the hanging device, which brings difficulties to the installation of the methane sensor hanging device. Currently, there are many problems in the mine tunnel, such as random hanging of sensors, low quality standards, the need for multiple people to cooperate in high-altitude operations for daily calibration and replacement and maintenance of sensors, safety hazards, waste of labor, and other undesirable phenomena, which need to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of coal mine mining working face methane sensor hanging protection device, it is convenient to install, it is convenient to check data, and save working hours.

[0006] The utility model includes the support rod of vertical arrangement, the upper portion of support rod is equipped with the methane sensor fixed frame, the side portion of methane sensor fixed frame is equipped with portable methane detection alarm rack;The upper portion of methane sensor fixed frame is equipped with roof hook, and the lower portion of support rod is sleeved with the fixing device for limiting the lower portion of support rod.

[0007] After adopting the structure, the portable methane detection alarm instrument placing rack is installed on the side of the methane sensor fixing frame, the portable methane detection alarm instrument and the methane sensor are arranged side by side, the portable methane detection alarm instrument does not need to be manually held, a plurality of groups of data can be measured in a certain time, the data measured by the portable methane detection alarm instrument is compared with the data of the methane sensor, calibration is facilitated, after calibration of the methane sensor at the place is completed, the portable methane detection alarm instrument is taken down and placed at another place, and the cycle is repeated, work time is saved, and the value detected by the portable methane detection alarm instrument is more accurate.

[0008] Preferably, the fixing device comprises a pipe buckle sleeved on the supporting rod, a vertical opening is arranged on the pipe buckle, horizontal outwardly extending side plates are arranged on the left and right sides of the opening, through holes are arranged on the plate surfaces of the side plates; a cross bar is further included, a stud is arranged on the left part of the cross bar, an external thread is arranged on the stud; the stud sequentially passes through the through holes on the two side plates from right to left and is screwed with a nut on the outside of the left side plate; the cross bar is a hollow rod, an opening is arranged on the right side of the cross bar, and a telescopic rod capable of sliding left and right in the cross bar is arranged in the opening.

[0009] Preferably, a fixing hook is fixedly arranged on the right end of the telescopic rod.

[0010] Preferably, a limiting plate is fixedly arranged on the left end of the cross bar, at the connection between the cross bar and the stud.

[0011] Preferably, the cross bar is arranged perpendicularly between the supporting rod.

[0012] Preferably, the length of the cross bar is greater than 200 mm.

[0013] Preferably, the distance from the bottom of the methane sensor fixing frame to the top of the top plate hook is less than 300 mm.

[0014] Preferably, a falling prevention disc is arranged on the bottom of the supporting rod.

[0015] Preferably, an anti-collision rubber pad is arranged on the upper part of the top plate hook.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1、In the side of the methane sensor fixing frame installs the portable methane detection alarm instrument placing rack, will portable methane detection alarm instrument and methane sensor arrange side by side, portable methane detection alarm instrument does not need to be manually held, a plurality of groups of data can be measured in a certain time, the data measured by the portable methane detection alarm instrument is compared with the data of the methane sensor, calibration is facilitated, after calibration of the methane sensor at the place is completed, the portable methane detection alarm instrument is taken down and placed at another place, and the cycle is repeated, work time is saved, and the value detected by the portable methane detection alarm instrument is more accurate;

[0018] 2、The distance from the bottom of the methane sensor fixing frame to the top of the roof hook is less than 300mm, when installing, the roof hook is fixed on the roof wall of the mine tunnel, which can meet the requirements of the "Coal Mine Safety Monitoring System and Inspection Instrument Use Management Specification"; the length of the cross rod is greater than 200mm, no matter how to adjust the position of the telescopic rod, the distance between the supporting rod and the side wall of the tunnel is not less than 200mm, which can meet the construction requirements, and the operation is more simple and convenient, and additional measuring tools are not required.

[0019] 3、The upper portion of the methane sensor fixing frame is provided with a roof hook, the lower portion of the supporting rod is sleeved with a fixing device for limiting the lower portion of the supporting rod, the height and angle of the fixing device are adjustable, the fixing device can be adjusted to adapt to the installation of various complex mine tunnels, the installation position of the device is more flexible, and the suspension type structure does not affect the walking of vehicles and personnel. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is an installation schematic view of the coal mine mining working face methane sensor hanging protection device.

[0021] Fig. 2 It is an enlarged view of the fixing device.

[0022] Fig. 3 It is a top view of the fixing device.

[0023] In the figure: 1, supporting rod; 2, methane sensor fixing frame; 3, portable methane detection alarm instrument placing frame; 4, roof hook; 5, pipe buckle; 6, cross rod; 7, stud; 8, nut; 9, telescopic rod; 10, fixing hook; 11, limiting plate; 12, anti-falling disc; 13, anti-collision rubber pad. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings.

[0025] The directions involved in the specification are accurate when the coal mine mining working face methane sensor hanging protection device normally works, the directions when the device is stored and transported are not limited, only represent relative position relationship, and do not represent absolute position relationship.

[0026] For example, Figs. 1 to 3As shown in the drawings, the device comprises a vertical support rod 1, a methane sensor fixing frame 2 is installed above the support rod 1, and is used for fixing the methane sensor, a portable methane detection alarm instrument placing frame 3 is installed on the side of the methane sensor fixing frame 2, and is used for placing the portable methane detection alarm instrument; the methane sensor fixing frame 2 and the portable methane detection alarm instrument placing frame 3 are both designed in a frame type, do not affect the measurement value of the instrument, and meanwhile, the frame type structure is more stable, protects the instrument, and prevents accidental touching.

[0027] The portable methane detection alarm instrument placing frame 3 is installed on the side of the methane sensor fixing frame 2, the portable methane detection alarm instrument and the methane sensor are arranged side by side, the portable methane detection alarm instrument does not need to be manually held, a plurality of groups of data can be measured within a certain time, the data measured by the portable methane detection alarm instrument is compared with the data of the methane sensor, and calibration is facilitated; after the calibration of the methane sensor at the place is completed, the portable methane detection alarm instrument can be taken down and placed at another place, and the cycle is repeated, thereby saving time, and the value measured by the portable methane detection alarm instrument is more accurate.

[0028] A roof hook 4 is arranged above the methane sensor fixing frame 2, the roof hook 4 is fixed on the top wall of the mine tunnel, and the roof hook 4 is used for fixing the upper part of the device, so that the device is not easy to shake; the distance from the bottom of the methane sensor fixing frame 2 to the top of the roof hook 4 is less than 300 mm, when the roof hook 4 is fixed on the top wall of the mine tunnel, the requirement of the methane sensor installation position in the Coal Mine Safety Monitoring System and Inspection Instrument Use Management Specification (the methane sensor should be vertically hung above the tunnel, and the distance from the roof should be no more than 300 mm, and the distance from the side wall of the tunnel should be no less than 200 mm) can be met, no additional measuring tools are needed, the device is convenient and fast, and the work efficiency is improved; preferably, a bump-proof rubber pad 13 is arranged on the upper part of the roof hook 4, and the bump-proof rubber pad 13 plays a buffering role during installation, so that the roof hook 4 is prevented from directly contacting the top wall of the mine tunnel and damaging the equipment.

[0029] A fixing device for limiting the lower part of the support rod 1 is sleeved with the lower part of the support rod 1, the fixing device comprises a pipe buckle 5 sleeved on the support rod 1, a vertical opening is arranged on the pipe buckle 5, horizontal side plates extending outward are arranged on the left and right sides of the opening, and through holes are arranged on the plate surfaces of the side plates; the pipe buckle 5 can slide up and down along the support rod 1 and can rotate around the support rod 1, so that the support rod 1 can be fixed from different heights and directions; a falling prevention disc 12 is arranged at the bottom of the support rod 1, the outer diameter of the falling prevention disc 12 is greater than the inner diameter of the pipe buckle 5, and the pipe buckle 5 is prevented from falling off; the falling prevention disc 12 can also block the sharp pipe wall of the lower part of the support rod 1, so that water vapor is prevented from entering and personnel are prevented from being accidentally injured.

[0030] The fixing device further comprises a crossbar 6, a left part of the crossbar 6 is provided with a stud 7, the stud 7 is provided with an external thread; the stud 7 sequentially passes through the through holes in the two side plates from right to left and is screwed with a nut 8 outside the left side plate, the nut 8 is used to loosen or lock the pipe clamp 5; the crossbar 6 is a hollow bar, a right side of the crossbar 6 is provided with an opening, a telescopic rod 9 capable of sliding left and right in the crossbar 6 is installed in the opening, the length of the telescopic rod 9 is adjusted to adjust the distance between the support rod 1 and the sidewall of the mine tunnel, and installation is facilitated; the telescopic rod 9 is fixed in the crossbar 6 through a bolt.

[0031] Further, a fixing hook 10 is fixedly arranged at a right end of the telescopic rod 9, the fixing hook 10 is fixed on the sidewall of the mine tunnel to fix the lower part of the support rod 1; a limiting plate 11 is fixedly arranged at a left end of the crossbar 6, the left end is located at a connection position of the crossbar 6 and the stud 7, the nut 8 is used in cooperation with the limiting plate 11 to make the pipe clamp 5 locked more firmly; the crossbar 6 is vertically arranged between the support rod 1, and the length of the crossbar 6 is greater than 200 mm, therefore, no matter how the position of the telescopic rod 9 is adjusted, the construction requirement that the distance between the support rod 1 and the sidewall of the mine tunnel is not less than 200 mm can be met, and the operation is more convenient.

[0032] During installation, first, a position where the methane sensor fixing frame 2 needs to be installed is found, the methane sensor and the portable methane detection alarm instrument are respectively installed in the methane sensor fixing frame 2 and the portable methane detection alarm instrument placing frame 3, the roof hook 4 is fixed on the upper wall of the mine tunnel, the upper part of the device is fixed, the nut 8 is unscrewed, the pipe clamp 5 is adjusted to a proper height, the crossbar 6 is rotated to make the fixing hook 10 vertically face the nearest sidewall of the mine tunnel, a proper installation point is found, the nut 8 is tightened to fix the pipe clamp 5, the telescopic rod 9 is pulled to a proper length, the fixing hook 10 is fixed on the sidewall of the mine tunnel, finally, the telescopic rod 9 is fixed through the bolt, and the installation is completed.

[0033] Of course, the above description is not a limitation of the present application, the present application is not limited to the above examples, and changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the present application should also belong to the protection scope of the present application.

Claims

1. A methane sensor hanger protection device for a coal mining face, characterised in that: The utility model provides a portable methane detection alarm instrument placing rack (3) is installed to the side of the methane sensor fixing frame (2) of the upper installation of vertical support rod (1), and the upper portion of methane sensor fixing frame (2) is equipped with roof hook (4), and the lower portion of support rod (1) is sleeved with the fixing device that the lower portion of support rod (1) is limited.

2. The methane sensor hanging protection device for a coal mining face according to claim 1, characterized in that: The fixing device includes a pipe clamp (5) sleeved on the support rod (1), the pipe clamp (5) is provided with a vertical opening, the left and right sides of the opening are provided with horizontally outwardly extending side plates, the plate surface of the side plate is provided with a through hole, a cross bar (6) is further included, the left part of the cross bar (6) is provided with a stud (7), the stud (7) is provided with an external thread, the stud (7) sequentially passes through the through holes in the two side plates from right to left and is screwed with a nut (8) on the outside of the left side plate, the cross bar (6) is a hollow rod, the right side of the cross bar (6) is provided with an opening, and a telescopic rod (9) capable of sliding left and right in the cross bar (6) is installed in the opening.

3. A methane sensor hanger protection device for a coal mining face as claimed in claim 2, characterised in that: The right side end of the telescopic rod (9) is fixedly provided with a fixing hook (10).

4. A methane sensor hanger protection device for a coal mining face as claimed in claim 2, characterised in that: The left side end of the cross bar (6) is fixedly provided with a limiting plate (11) at the connection between the cross bar (6) and the stud (7).

5. A methane sensor hanger protection device for a coal mining face as claimed in claim 2, characterised in that: The cross bar (6) is vertically arranged between the cross bar (6) and the support rod (1).

6. A methane sensor hanger protection device for a coal mining face as claimed in claim 2, characterised in that: The length of the cross bar (6) is greater than 200mm.

7. A methane sensor hanger protection device for a coal mining face as claimed in claim 1, characterised in that: The distance from the bottom of the methane sensor fixing frame (2) to the top of the roof hook (4) is less than 300mm.

8. A methane sensor hanger protection device for a coal mining face as claimed in claim 1, characterised in that: The bottom of the support rod (1) is provided with an anti-falling disc (12).

9. A methane sensor hanger protection device for a coal mining face as claimed in claim 1, characterised in that: The upper portion of the roof hook (4) is provided with an anti-collision rubber pad (13).

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