Adjustable gas detection device for coal bed

The present invention discloses an adjustable gas detection device for coal bed comprising a detection direction adjustment assembly, a suction head angle adjustment assembly and an analysis bin, wherein the suction head angle adjustment assembly includes a suction head first-level angle adjustment assembly and a suction head second-level angle adjustment assembly, and the suction head first-level angle adjustment assembly includes a suction head that sucks a gas through a suction pump and sends it into the analysis bin through a suction pipe for analysis; the detection direction adjustment assembly and the suction head angle adjustment assembly jointly adjust a position and a direction of the suction head. The gas detection device for coal bed of the present invention has many degrees of freedom, can quickly complete the angle adjustment, and realizes rapidly-oriented detection, as well as having advantages of high control efficiency, rapid response, flexibility and reliability.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 201910264476.9 with a filing date of Apr. 2, 2019. The content of the aforementioned application, including any intervening amendments thereto, are incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a gas detection device for coal bed, in particular, to an adjustable gas detection device for coal bed.

BACKGROUND

Gas detector is an instrumentation tool for detecting leakage concentration of the gas, mainly refers to a handheld or fixed gas detector. It mainly uses a gas sensor to detect the type of gas present in the environment, and the gas sensor is a sensor for detecting the composition and content of the gas. At present, there are many shortcomings in the use of gas detection devices for coal bed, wherein the fixed detection device has disadvantages of low degree of freedom, inconvenient adjustment, small detection range, and hidden dangers of work safety.

For above problems, the present invention provides an adjustable gas detection device for coal bed, which is convenient in adjustment, and can improve the detection effect.

SUMMARY

In order to achieve above purpose, the present invention provides the following technical solution: an adjustable gas detection device for coal bed, comprising a detection direction adjustment assembly, a suction head angle adjustment assembly and an analysis bin, wherein the suction head angle adjustment assembly includes a suction head first-level angle adjustment assembly and a suction head second-level angle adjustment assembly, and the suction head first-level angle adjustment assembly includes a suction head, the suction head sucking a gas through a suction pump and sends it into the analysis bin through a suction pipe for analysis; the detection direction adjustment assembly and the suction head angle adjustment assembly jointly adjust a position and a direction of the suction head.

Further, preferably, the detection direction adjustment assembly includes a motor base and a mounting plate, the motor base is fixedly mounted with a direction adjustment motor, the direction adjustment motor passes through the motor base and is fixedly mounted with a No. 2 gear at its output end, and the No. 2 gear is engaged with a No. 1 gear, the No. 1 gear being fixedly connected to the analysis bin and driving the analysis bin to rotate.

Further, preferably, both ends of an upper end of the analysis bin respectively extend to a support rod and are fixedly connected to the support rod, an upper portion of the support rod is fixedly connected to the mounting plate, and the other end of the support rod is slidably connected to a mounting base through a No. 1 slider; the slider is in an inverted T shape, and the mounting base is correspondingly opened with a circular arc-shaped groove having a T-shaped cross section for limiting the slider; the mounting base is generally annular with a middle portion provided with a mounting rod for fixing the motor base.

Further, preferably, the suction head first-level angel adjustment assembly further includes an angle adjustment base, and the angle adjustment base is mainly composed of a lower mounting base, an upper mounting base and an adjustment ball, wherein both the lower mounting base and the upper mounting base are provided with clamping members, and a side of the clamping member adjacent to the adjustment ball has a curvature similar to that of the adjustment ball; both the upper mounting base and an upper end of the clamping member matched with the upper mounting base are opened with a circular hole for exposing the adjustment ball, and an upper end of the adjustment ball is provided with an angle output shaft extending upward in a radial direction thereof, the angle output shaft being fixedly connected to the suction pump.

Further, preferably, both sides of the upper mounting base and the lower mounting base are provided with a fixing base, and the fixing base is connected through an adjustment bolt.

Further, preferably, the suction head second-level angle adjustment assembly includes a straight rack, a chute, an angle adjustment motor and a strut; the straight rack is slidably disposed on the mounting plate, a side view of the straight rack is inverted T-shaped, and the mounting plate is correspondingly opened with a groove having a T-shaped cross section for limiting the straight rack; a middle portion of the mounting plate is opened with an yielding port, the straight rack is disposed at one side of the yielding port, and the angle adjustment motor is disposed at the other end of the yielding port.

Further, preferably, the straight rack is mounted with a sliding slot disposed perpendicular to the straight rack through the mounting hole, the chute is inserted into the yielding port, and a length of the yielding port is slightly larger than a length of the straight rack; the chute is slidably provided with a No. 2 slider, and a side of the No. 2 slider adjacent to the angle adjustment motor is fixed with a crank, and the other end of the crank is driven by an output end of the angle adjustment motor; the output end of the angle adjustment motor is a side adjacent to the straight rack, and the angle adjustment motor is fixed on the mounting plate through the motor base.

Further, preferably, the straight rack is engaged with a No. 3 gear, and the No. 3 gear is coaxially provided with a teeth-uncompleted gear; the teeth-uncompleted gear is engaged with a No. 4 gear, and a fixed rod is fixed on the No. 4 gear; the No. 3 gear, the teeth-uncompleted gear and the No. 4 gear are all rotatably disposed on a rear plate, and the rear plate is fixed on the mounting plate; the crank is rotated a turn to drive the No. 4 gear to rotate half a turn clockwise and half a turn counterclockwise.

Further, preferably, both a bottom center position of the analysis bin and a center position of the No. 1 gear are provided with a through hole for connecting the suction pipe, and the suction pipe is communicated with the analysis bin through the No. 1 gear; a top center position of the analysis bin is provided with a discharge port, and the discharge port may be connected to a ventilation device through a connecting pipe; the analysis bin is provided with a partition plate to divide the analysis bin into two cavities, one of which is communicated with the suction pipe and the other of which is provided with an analysis processing device and the discharge port, and the two cavities are communicated through the analysis processing device.

Further, preferably, the analysis processing device includes a gas sensor and a microprocessor, and the analysis processing device, the direction adjustment motor, and the angle adjustment motor are all controlled uniformly by a controller.

The invention may have two modes of operation: first, according to the specific working conditions, the orientation is required for detection, and at this time, the direction and angle of the suction head are adjusted by the running direction adjustment motor and the angle adjustment motor to realize the oriented detection; in addition, the direction adjustment motor and the angle adjustment motor may also be continuously opened, and the suction head continuously moves in three dimensions, including circular motion and swinging back and forth, thereby realizing range detection. The gas detection device for coal bed of the present invention has many degrees of freedom, may quickly complete the angle adjustment, and realizes rapidly-oriented detection, as well as having advantages of high control efficiency, rapid response, flexibility and reliability, so as to greatly reduce the safety hazard of the work safety.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be clearly and completely described hereafter in connection with the drawings in the embodiments of the present invention. It is apparent that the described embodiments are only a part of the embodiments of the present invention, but not the whole. On the basis of the embodiments in the present invention, all the other embodiments obtained by a person skilled in the art without involving an inventive effort are all concluded in the protection scope of the present invention.

With reference toFIGS. 1 to 5, the present invention provides a technical solution: an adjustable gas detection device for coal bed, characterized by comprising a detection direction adjustment assembly, a suction head angle adjustment assembly and an analysis bin1, wherein the suction head angle adjustment assembly includes a suction head first-level angle adjustment assembly and a suction head second-level angle adjustment assembly, and the suction head first-level angle adjustment assembly includes a suction head34, the suction head34sucking a gas through a suction pump33and sends it into the analysis bin1through a suction pipe32for analysis; the detection direction adjustment assembly and the suction head angle adjustment assembly jointly adjust a position and a direction of the suction head34.

In the present embodiment, the detection direction adjustment assembly includes a motor base and a mounting plate11, the motor base is fixedly mounted with a direction adjustment motor4, the direction adjustment motor4passes through the motor base and is fixedly mounted with a No. 2 gear3at its output end, and the No. 2 gear3is engaged with a No. 1 gear2, the No. 1 gear2being fixedly connected to the analysis bin1and driving the analysis bin1to rotate.

In the present embodiment, both ends of an upper end of the analysis bin1respectively extend to a support rod7and are fixedly connected to the support rod7, an upper portion of the support rod7is fixedly connected to the mounting plate11, so that the mounting plate11is driven to rotate when the direction adjustment motor4drives the analysis bin1, and the other end of the support rod7is slidably connected to a mounting base5through a No. 1 slider8; the slider8is in an inverted T shape, and the mounting base5is correspondingly opened with a circular arc-shaped groove having a T-shaped cross section for limiting the slider8; the mounting base5is generally annular with a middle portion provided with a mounting rod6for fixing the motor base.

In the present embodiment, the suction head first-level angel adjustment assembly further includes an angle adjustment base25, and the angle adjustment base25is mainly composed of a lower mounting base26, an upper mounting base27and an adjustment ball29, wherein both the lower mounting base26and the upper mounting base27are provided with clamping members28, and a side of the clamping member28adjacent to the adjustment ball29has a curvature similar to that of the adjustment ball29; both the upper mounting base27and an upper end of the clamping member28matched with the upper mounting base27are opened with a circular hole for exposing the adjustment ball29, and an upper end of the adjustment ball29is provided with an angle output shaft extending upward in a radial direction thereof, the angle output shaft being fixedly connected to the suction pump33; the first-level adjustment assembly performs an adjustment manually before operation, which is mainly used for initially adjusting the angle of the suction head, thereby facilitating disassembly and detection.

Among them, both sides of the upper mounting base27and the lower mounting base26are provided with a fixing base30, and the fixing base30is connected through an adjustment bolt31.

In the present embodiment, the suction head second-level angle adjustment assembly includes a straight rack13, a chute14, an angle adjustment motor17and a strut23; the straight rack13is slidably disposed on the mounting plate11, a side view of the straight rack13is inverted T-shaped, and the mounting plate11is correspondingly opened with a groove having a T-shaped cross section (not shown) for limiting the straight rack13; as shown inFIG. 3, a middle portion of the mounting plate11is opened with an yielding port12, the straight rack13is disposed at one side of the yielding port12, and the angle adjustment motor17is disposed at the other end of the yielding port12.

In the present embodiment, the straight rack13is mounted with a sliding slot14disposed perpendicular to the straight rack13through the mounting hole15, the chute14is inserted into the yielding port12, and a length of the yielding port12is slightly larger than a length of the straight rack13; the chute14is slidably provided with a No. 2 slider16, and a side of the No. 2 slider16adjacent to the angle adjustment motor is fixed with a crank19, and the other end of the crank19is driven by an output end of the angle adjustment motor17; the output end of the angle adjustment motor17is a side adjacent to the straight rack13, and the angle adjustment motor17is fixed on the mounting plate90through the motor base18. In operation, the angle adjustment motor17drives the crank19to perform a circumferential operation, such as the position of the crank19shown inFIG. 1, and when rotating 90 degrees counterclockwise, the 90 degree rotation of the crank19counterclockwise may be decomposed into a rightward movement and an upward movement, wherein the rightward movement drives the straight rack to slide to the right, and the upward movement drives the No. 2 slider26to slide upward.

As a preferred embodiment, the straight rack13is engaged with a No. 3 gear20, and the No. 3 gear20is coaxially provided with a teeth-uncompleted gear21; the teeth-uncompleted gear21is engaged with a No. 4 gear22, and a fixed rod23is fixed on the No. 4 gear22; the No. 3 gear20, the teeth-uncompleted gear21and the No. 4 gear22are all rotatably disposed on a rear plate24, and the rear plate24is fixed on the mounting plate11; when the crank19rotates by one turn, the straight rack13is driven to reciprocate once, and when the straight rack13reciprocates once, the No. 3 gear20may be driven to rotate clockwise by one turn and rotate counterclockwise by one turn, and when the teeth-uncompleted rear21rotates by one turn, the No. 4 gear22is driven to rotate by half a turn, so that the crank rotating by one turn may drive the No. 4 gear to rotate half a turn clockwise and half a turn counterclockwise; due to the many parameters of the gear, including the number of the teeth, the modulus, the diameter of the tip circle, the diameter of the root circle, etc., the calculation is complicated, so the specific number of teeth, the modulus, and the like are no longer provided.

In the present embodiment, both a bottom center position of the analysis bin1and a center position of the No. 1 gear2are provided with a through hole for connecting the suction pipe32, and the suction pipe32is communicated with the analysis bin1through the No. 1 gear2; a top center position of the analysis bin1is provided with a discharge port10; the analysis bin1is provided with a partition plate to divide the analysis bin into two cavities, one of which is communicated with the suction pipe32and the other of which is provided with an analysis processing device9and the discharge port10, and the two cavities are communicated through the analysis processing device9; a gas entering the right cavity of the analysis bin1through the suction pipe32may be directly analyzed and processed by the analysis processing device9, and then discharged through the discharge port10, specifically through the ventilation pipe, to reduce the detection error.

Among them, the analysis processing device includes a gas sensor and a microprocessor, wherein the gas sensor and the micro-processing are used for detecting and analyzing the concentration component of the gas, etc., which are existing products and thus will not be described again; the analysis processing device9, the direction adjustment motor4, and the angle adjustment motor17are all controlled uniformly by a controller.

The invention may have two modes of operation: first, according to the specific working conditions, the orientation is required for detection, and at this time, the direction and angle of the suction head34are adjusted by running the direction adjustment motor4and the angle adjustment motor17to realize the oriented detection; in addition, only the direction adjustment motor4and the angle adjustment motor17may also be opened, and the suction head34continuously moves in three dimensions, including circular motion and swinging back and forth, thereby realizing range detection. The gas detection device for coal bed of the present invention has many degrees of freedom, may quickly complete the angle adjustment, and realizes rapidly-oriented detection, as well as having advantages of high control efficiency, rapid response, flexibility and reliability, so as to greatly reduce the safety hazard of the work safety.

Although the embodiments of the present invention have been shown and described, it can be understood that a person skilled in the art can make various changes, modifications, substitutions and variations to the embodiments without departing from the principle and spirit of the present invention; and the scope of the present invention is defined by the attached claims and equivalents thereof.