A dust blocking device for a tunneling working face, a matching dust removal system and a use method thereof

Abstract

This invention discloses a dust-blocking device and supporting dust removal system for a tunneling face, as well as its usage method. The device includes a first hinged flap, a first dust-blocking explosion-proof transparent door, a second hinged flap, a second dust-blocking explosion-proof transparent door, a first dust-blocking explosion-proof transparent door outer frame, a first flexible soft-body sealing frame, a second dust-blocking explosion-proof transparent door outer frame, and a second flexible soft-body sealing frame. The first and second dust-blocking explosion-proof transparent doors are symmetrically distributed on both sides of the tunneling machine and are respectively fixed to the first and second hinged flaps. The first and second flexible soft-body sealing frames are respectively fixed to the first and second dust-blocking explosion-proof transparent doors via the outer frames of the first and second dust-blocking explosion-proof transparent doors. This invention has advantages such as simple structure, convenient installation and movement, ability to form a sealed space at the working face, good dust-blocking effect, fast dust removal speed, minimal interference with personnel operations and visibility, strong applicability, and low cost.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology in underground coal mine tunneling faces, and in particular to a dust-blocking device and supporting dust removal system for tunneling faces, as well as its usage method. Background Technology

[0002] Currently, when underground tunneling machines cut coal or semi-coal rock, a large amount of dust is generated due to coal scattering and the compression and ejection of coal by the cutting teeth. Simultaneously, under the influence of the forced airflow at the working face, this dust rapidly spreads to the face, severely polluting the entire work area. The presence of large amounts of dust in the air not only pollutes the working environment, reduces visibility, and accelerates the damage to electrical equipment, but also seriously endangers the physical and mental health of mine workers. Mild cases can cause respiratory inflammation, chronic poisoning, and skin diseases, while severe cases can lead to incurable pneumoconiosis. Therefore, to ensure the health of underground workers and implement safe production, it is essential to find effective technical solutions to the dust pollution problem at the tunneling working face.

[0003] Currently, in large and medium-sized coal mines in China, the dust control measures adopted at the tunneling face mainly consist of wet dust removal methods such as coal seam water injection and tunneling machine spraying water, or dust suppression methods such as charged water mist, long-pressure short-extraction ventilation, and foam spraying. Although these methods can suppress dust at the end of the tunneling face to a certain extent, due to the large space of long tunneling roadways, especially under the action of compressed air flow at the tunneling face, dust often quickly disperses to other areas outside the end of the tunneling face. It is difficult to quickly and effectively prevent dust from dispersing behind the end of the tunneling face using the above measures.

[0004] While using air curtains or water curtains to block dust can achieve a certain dust-blocking effect, it requires the installation of airflow or water jet nozzles and matching special pipelines. As the working face advances, it needs to be moved manually frequently. Furthermore, it is difficult to guarantee the uniformity of air curtains and water curtains and their stability when disturbed by compressed airflow at the tunneling face. Water and air jets also cause some interference to workers and the environment at the working face.

[0005] The invention patent "Dust Removal Method and Device for Ordinary Tunneling Faces" with authorization announcement number CN101324191B provides a curtain-type dust blocking device. By setting a dust blocking curtain 5-30m behind the tunneling face, it can block the spread of dust. However, with the increase in mechanization, most tunneling faces now adopt integrated mechanized mining methods, replacing the traditional blasting method of ordinary tunneling faces. This method combines driving tunneling machines with manual anchoring. Most workers are located within 1-3m of the tunneling face, and there are large equipment such as tunneling machines in the tunneling face elevation area. Using this full-section curtain-type dust blocking device behind the tunneling face is difficult to effectively block dust within 1-3m of the tunneling face. It is only suitable for blasting processes where no one is at the tunneling face and cannot be effectively applied to integrated mechanized tunneling faces.

[0006] Furthermore, most existing dust removal equipment on the market suffers from complex structures, large and heavy volumes, difficulty in installation, high initial investment, or significant material consumption. Therefore, designing an effective dust control system suitable for current mechanized tunneling faces, with a simple structure, easy installation and maintenance, low cost, and high safety performance, is a crucial issue that needs to be addressed. Summary of the Invention

[0007] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a dust-blocking device and matching dust removal system for tunneling faces, along with its usage method. This invention effectively solves the problems by installing a portable, gate-type dust-blocking device on the side wall of the tunneling machine and employing a matching dust removal system. It offers advantages such as simple structure, convenient installation and relocation, the ability to create a near-enclosed space at the working face, excellent dust-blocking effect, fast dust removal speed, minimal interference with personnel operations and visibility, strong applicability, and low cost.

[0008] To achieve the above objectives, the present invention adopts the following technical solution.

[0009] This invention provides a dust-blocking device for a tunneling face, used in conjunction with a tunneling machine. The dust-blocking device is installed on the tunneling machine and includes a first hinged blade, a first dust-blocking explosion-proof transparent door, a second hinged blade, a second dust-blocking explosion-proof transparent door, an outer frame of the first dust-blocking explosion-proof transparent door, a first flexible sealing frame, an outer frame of the second dust-blocking explosion-proof transparent door, and a second flexible sealing frame. The first and second dust-blocking explosion-proof transparent doors are symmetrically distributed on both sides of the tunneling machine and are respectively fixed to the rotating blades of the first and second hinged blades. The fixed plates that cooperate with the rotating plates of the first hinged plate and the fixed plates that cooperate with the rotating plates of the second hinged plate are respectively installed on the side walls of the tunneling machine body on both sides of the tunneling machine; the first flexible soft sealing frame and the second flexible soft sealing frame are respectively fixed to the first dustproof explosion-proof transparent door and the second dustproof explosion-proof transparent door through the outer frame of the first dustproof explosion-proof transparent door and the outer frame of the second dustproof explosion-proof transparent door, and the first dustproof explosion-proof transparent door and the second dustproof explosion-proof transparent door are connected to the side wall of the tunneling machine body between the rear of the cutting head swing arm and the front of the tunneling machine driver's seat.

[0010] As a preferred embodiment of the present invention, both the first dustproof and explosion-proof transparent door and the second dustproof and explosion-proof transparent door are made of any one of tempered glass, explosion-proof glass, bulletproof glass, or transparent hard plastic.

[0011] As another preferred embodiment of the present invention, both the first flexible soft sealing frame and the second flexible soft sealing frame are made of soft rubber material.

[0012] The present invention provides a method for using a dust-blocking device at a tunneling face, comprising the following steps:

[0013] Step 1: Install the dust-blocking device at the tunneling face onto the side walls of the tunneling machine on both sides of the machine body via the first hinged flap and the second hinged flap;

[0014] Step 2: When the tunneling machine needs to carry out tunneling work, the first and second dustproof and explosion-proof transparent doors are driven manually or electrically to rotate around the central axis of the first and second hinged blades, respectively. This makes the plane of the first and second dustproof and explosion-proof transparent doors approximately perpendicular to the plane of the tunneling machine's side wall, thus putting the dustproof device at the tunneling face into dustproof mode.

[0015] Step 3: If the tunneling work stops or the dust-proof device at the tunneling face hinders the attitude adjustment, movement of the roadheader, or the back-and-forth movement of the operators at the tunneling face, the first dust-proof explosion-proof transparent door and the second dust-proof explosion-proof transparent door can be driven by manual or electric devices to rotate the first dust-proof explosion-proof transparent door and the second dust-proof explosion-proof transparent door around the central axes of the first hinge leaf and the second hinge leaf respectively, so that the dust-proof device at the tunneling face enters the fully retracted state or the deployed state;

[0016] Step 4: According to the current working state and operation requirements of the roadheader, adjust the state of the dust-proof device at the tunneling face in a timely manner according to Step 2 and Step 3.

[0017] A dust removal system supporting the dust-proof device at the tunneling face provided by the present invention is used in cooperation with the dust-proof device at the tunneling face, and includes a dust removal air duct, a supply air duct, a dust-proof explosion-proof transparent door cleaner, a dust removal fan, and a supply air fan; the dust removal air duct and the supply air duct are respectively installed on both sides of the surrounding rock of the roadway. The front port of the dust removal air duct is located in the approximately enclosed space formed by the dust-proof device at the tunneling face and the tunneling face. The rear port of the dust removal air duct is connected to the dust removal fan located behind the roadheader. The body of the dust removal air duct is in extrusion contact with the second flexible soft sealing frame; the front port of the supply air duct is located in the approximately enclosed space formed by the dust-proof device at the tunneling face and the tunneling face. The rear port of the supply air duct is connected to the supply air fan located behind the roadheader. The body of the supply air duct is in extrusion contact with the first flexible soft sealing frame; the dust-proof explosion-proof transparent door cleaner is adsorbed on the inner and outer surfaces of the first dust-proof explosion-proof transparent door or the second dust-proof explosion-proof transparent door.

[0018] As another preferred solution of the present invention, the dust-proof explosion-proof transparent door cleaner uses an existing manual or automatic glass cleaner, and this glass cleaner includes two cleaner bodies that can be suctioned together. The two cleaner bodies are respectively adsorbed on the inner and outer surfaces of the first dust-proof explosion-proof transparent door or the second dust-proof explosion-proof transparent door.

[0019] A method for using a dust removal system supporting the dust-proof device at the tunneling face provided by the present invention includes the following steps:

[0020] Step 1: Install the dust-proof device at the tunneling face on the side walls of the roadheader body on both sides of the roadheader through the first hinge leaf and the second hinge leaf;

[0021] Step 2: The dust removal air duct and the supply air duct are respectively installed on both sides of the surrounding rock of the roadway; the front ports of the dust removal air duct and the supply air duct are both arranged in the approximately enclosed space formed by the dust-proof device at the tunneling face and the tunneling face. The rear ports of the dust removal air duct and the supply air duct are respectively connected to the dust removal fan and the supply air fan; the dust-proof explosion-proof transparent door cleaner is adsorbed on the inner and outer surfaces of the first dust-proof explosion-proof transparent door or the second dust-proof explosion-proof transparent door;

[0022] Step 3: When the tunneling machine is tunneling, turn on the dust removal fan and the air supply fan, and adjust the dust blocking device at the tunneling face to the dust blocking state; the dust accumulated in the near-closed space formed by the dust blocking device and the tunneling face is sucked into the dust removal fan and eliminated by the dust removal fan, and fresh air is supplied to the near-closed space by the air supply fan to realize the circulation of air in the near-closed space;

[0023] Step 4: When the tunneling work stops or the dust blocking device at the tunneling face obstructs the adjustment of the tunneling machine's posture, movement, or the movement of workers to and from the tunneling face, the dust blocking device at the tunneling face can be adjusted to the fully retracted or extended state. After the dust blocking device at the tunneling face is adjusted to the fully retracted state, the dust removal duct and the air supply duct can be closed.

[0024] Step 5: When dust accumulates on the surface of the first or second dustproof and explosion-proof transparent door, affecting the operator's visibility, the dustproof and explosion-proof transparent door cleaner can be manually or electrically controlled to move on the surface of the first or second dustproof and explosion-proof transparent door to remove the accumulated dust.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] By installing the dust-blocking device of this invention on the tunneling machine, when the tunneling machine is in operation, the dust-blocking device is adjusted to the dust-blocking state, blocking a large amount of dust generated from cutting coal and rock within the nearly enclosed space formed by the dust-blocking device and the working face. This prevents the dust from escaping to the rear of the working face. A matching dust removal system is used to concentrate and eliminate the dust within the nearly enclosed space, significantly reducing the dust concentration at the working face. The dust-blocking explosion-proof transparent door can be quickly cleaned using a face cleaner. When the tunneling machine is not in operation, the dust-blocking device can be quickly retracted parallel to the side of the tunneling working face by rotating the dust-blocking explosion-proof transparent door. This is convenient to retract, requires little space, and can be moved with the tunneling machine without manual handling or installation. In addition, during tunneling operations, when rocks may fall or fly out from the working face, the dust-blocking device can protect the personnel working behind it. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the dust-blocking state of the dust-blocking device of the present invention;

[0028] Figure 2 This is a schematic diagram of the dust-blocking device of the present invention in its retracted state;

[0029] Figure 3 This is a schematic diagram of the dust-blocking device and its supporting dust removal system of the present invention;

[0030] The markings in the diagram are as follows: 1 is the tunneling machine, 2 is the surrounding rock of the tunnel, 10 is the side wall of the tunneling machine body, 11 is the tunneling machine cutting head, 12 is the tunneling machine cutting head swing arm, 13 is the tunneling machine shovel, 14 is the tunneling machine driver's seat, 15 is the tunneling machine track, 16 is the tunneling machine coal conveyor, 101 is the first hinged blade, 102 is the first dustproof and explosion-proof transparent door, 103 is the outer frame of the first dustproof and explosion-proof transparent door, 104 is the first flexible soft sealing frame, 201 is the second hinged blade, 202 is the second dustproof and explosion-proof transparent door, 203 is the outer frame of the second dustproof and explosion-proof transparent door, 204 is the second flexible soft sealing frame, 301 is the dust removal duct, 302 is the air supply duct, and 303 is the dustproof and explosion-proof transparent door face washer. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] Combination Figure 1 and Figure 2 As shown in the embodiment of the present invention, a dust-blocking device for a tunneling face is provided. The tunneling machine 1 used in conjunction with the dust-blocking device includes a tunneling machine body, a tunneling machine cutting head 11, a tunneling machine cutting head swing arm 12, a tunneling machine shovel 13, a tunneling machine driver's seat 14, tunneling machine tracks 15, and a tunneling machine coal conveyor 16. The tunneling machine driver's seat 14 is located above the tunneling machine body. The tunneling machine cutting head swing arm 12 and the tunneling machine shovel 13 are respectively connected to the front side of the tunneling machine body. The head swing arm 12 is connected to the cutting head 11 of the tunneling machine. The tunneling machine walking track 15 and the tunneling machine coal conveyor 16 are located at the bottom of the tunneling machine body. The dust blocking device of the tunneling working face includes a first hinged blade 101, a first dust blocking explosion-proof transparent door 102, a second hinged blade 201, a second dust blocking explosion-proof transparent door 202, a first dust blocking explosion-proof transparent door outer frame 103, a first flexible soft sealing frame 104, a second dust blocking explosion-proof transparent door outer frame 203, and a second flexible soft sealing frame 204.

[0033] The first dustproof and explosion-proof transparent door 102 and the second dustproof and explosion-proof transparent door 202 are preferably made of any one of tempered glass, explosion-proof glass, bulletproof glass, or transparent hard plastic.

[0034] The first dust-proof and explosion-proof transparent door 102 and the second dust-proof and explosion-proof transparent door 202 are symmetrically distributed on both sides of the tunneling machine 1, and are respectively fixed to the rotating blades of the first hinged blade 101 and the second hinged blade 201. The fixed blades of the first hinged blade 101 and the second hinged blade 201 are respectively fixed to the two opposite side walls 10 of the tunneling machine body. Thus, the first dust-proof and explosion-proof transparent door 102 and the second dust-proof and explosion-proof transparent door 202 are realized through the first hinged blade 101 and the second hinged blade 201. The exposed door 202 is hinged to the side walls 10 of the tunneling machine body on both sides of the tunneling machine 1. The first dustproof and explosion-proof transparent door 102 and the second dustproof and explosion-proof transparent door 202 can rotate around the central axis of the first hinged leaf 101 and the second hinged leaf 201, respectively. The first flexible soft sealing frame 104 and the second flexible soft sealing frame 204 are fixed to the first dustproof and explosion-proof transparent door 102 and the second dustproof and explosion-proof transparent door 202 through the outer frame 103 of the first dustproof and explosion-proof transparent door and the outer frame 203 of the second dustproof and explosion-proof transparent door, respectively.

[0035] The first flexible soft sealing frame 104 and the second flexible soft sealing frame 204 are used to block the gap between the first dustproof and explosion-proof transparent door 102, the second dustproof and explosion-proof transparent door 202 and the surrounding rock 2 of the roadway, so as to reduce the amount of dust overflow. Flexible soft materials are selected to reduce the resistance when friction and collision occur with the surrounding rock 2 of the roadway or the surrounding rock anchor and roadway pipeline facilities. The first flexible soft sealing frame 104 and the second flexible soft sealing frame 204 are preferably made of soft rubber material.

[0036] The dust-blocking state of the tunneling face dust-blocking device is as follows: Rotate the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202. When the planes containing the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202 are both perpendicular to the plane containing the side wall 10 of the tunneling machine, the tunneling face dust-blocking device enters the dust-blocking state. At this time, the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202 are located on the same plane, and this plane is located behind the tunneling machine cutting head 11, the tunneling machine cutting head swing arm 12, and the tunneling machine shovel 13, and in front of the tunneling machine driver's seat 14; the first dust-blocking... The dust explosion-proof transparent door 102 and the second dust explosion-proof transparent door 202 form a nearly seamless dust-blocking surface. The first flexible soft sealing frame 104 and the second flexible soft sealing frame 204 are in contact with the surrounding rock 2 of the roadway or the surface of the surrounding rock anchor and roadway pipeline facilities. Together with the tunneling machine body, the tunneling machine track 15, and the tunneling machine coal conveyor 16, they form a nearly seamless dust-blocking cross-section within the surrounding rock 2 of the roadway. This blocks the dust generated by the tunneling machine cutting head 11 cutting the coal wall within the nearly enclosed space between the dust blocking device and the working face, reducing the escape of dust behind the dust blocking device. The tunneling machine driver and other operators can observe the cutting of the coal and rock by the tunneling machine cutting head 11 through the first dust explosion-proof transparent door 102 and the second dust explosion-proof transparent door 202.

[0037] The dust-blocking device at the tunneling face is in its fully retracted state when the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202 are rotated. When the planes of the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202 are approximately parallel to the side wall 10 of the tunneling machine body, the dust-blocking device at the tunneling face is in its fully retracted state.

[0038] The dust-blocking device at the tunneling face is in the unfolded state when the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202 are rotated. When the plane containing the first dust-blocking explosion-proof transparent door 102 and the second dust-blocking explosion-proof transparent door 202 forms a certain angle Ψ with the plane containing the side wall 10 of the tunneling machine body, and the dust-blocking device at the tunneling face is not in the dust-blocking state or the fully retracted state, the dust-blocking device at the tunneling face is in the unfolded state.

[0039] The present invention provides a method for using a dust-blocking device at a tunneling face, comprising the following steps:

[0040] Step 1: Install the dust-blocking device at the tunneling face onto the side walls 10 of the tunneling machine body on both sides of the tunneling machine 1 via the first hinged flap 101 and the second hinged flap 201;

[0041] Step 2: When the roadheader 1 needs to carry out tunneling work, the first dust-proof explosion-proof transparent door 102 and the second dust-proof explosion-proof transparent door 202 are driven by manual or electric drive devices, so that the first dust-proof explosion-proof transparent door 102 and the second dust-proof explosion-proof transparent door 202 rotate around the central axes of the first hinge leaf 101 and the second hinge leaf 201 respectively, so that the planes where the first dust-proof explosion-proof transparent door 102 and the second dust-proof explosion-proof transparent door 202 are located are approximately perpendicular to the plane of the side wall 10 of the roadheader body, so that the dust-proof device at the tunneling working face enters the dust-proof state;

[0042] Step 3: If the tunneling work is stopped or the dust-proof device at the tunneling working face hinders the attitude adjustment, movement of the roadheader or the access of the operating personnel to and from the tunneling face head, the first dust-proof explosion-proof transparent door 102 and the second dust-proof explosion-proof transparent door 202 can be driven by manual or electric drive devices, so that the first dust-proof explosion-proof transparent door 102 and the second dust-proof explosion-proof transparent door 202 rotate around the central axes of the first hinge leaf 101 and the second hinge leaf 201 respectively, so that the dust-proof device at the tunneling working face enters the fully retracted state or the deployed state;

[0043] Step 4: According to the current working state and operation requirements of the roadheader 1, the state of the dust-proof device at the tunneling working face is adjusted in a timely manner according to Steps 3 and 4.

[0044] As Figure 3 shown, a dust removal system supporting the dust-proof device at the tunneling working face provided by the embodiment of the present invention is used in cooperation with the dust-proof device at the tunneling working face, and includes a dust removal air duct 301, a supply air duct 302, a dust-proof explosion-proof transparent door cleaner 303, a dust removal fan, and a supply air fan; the dust removal air duct 301 and the supply air duct 302 are respectively erected on both sides of the roadway surrounding rock 2; the front end port of the dust removal air duct 301 is located in the approximately enclosed space formed by the dust-proof device at the tunneling working face and the tunneling working face, the rear end port of the dust removal air duct 301 is connected to the dust removal fan located behind the roadheader 1, and the body of the dust removal air duct 301 is in extrusion contact with the second flexible soft sealing frame 204; the inside of the dust removal air duct 301 is in a negative pressure state, and the dust in the approximately enclosed space is sucked into the dust removal fan to be eliminated. The front end port of the supply air duct 302 is located in the approximately enclosed space formed by the dust-proof device at the tunneling working face and the tunneling working face, the rear end port of the supply air duct 302 is connected to the supply air fan located behind the roadheader 1, and the body of the supply air duct 302 is in extrusion contact with the first flexible soft sealing frame 104. The inside of the supply air duct 302 is in a positive pressure state, and fresh air is supplemented and pressed into the approximately enclosed space to realize the air circulation in the approximately enclosed space.

[0045] The dust-proof and explosion-proof transparent door cleaner 303 uses an existing manual or automatic glass cleaner. Preferably, a cleaner with the patent publication number "CN103405193A" is used. This glass cleaner includes two cleaner bodies that can be suction-joined together. The two cleaner bodies are respectively adsorbed on the inner and outer surfaces of the first dust-proof and explosion-proof transparent door 102 or the second dust-proof and explosion-proof transparent door 202, and can move on the inner and outer surfaces of the first dust-proof and explosion-proof transparent door 102 and the second dust-proof and explosion-proof transparent door 202. When the first dust-proof and explosion-proof transparent door 102 or the second dust-proof and explosion-proof transparent door 202 is heavily dusted and affects the driver's line of sight of the roadheader 1, the dust on the inner and outer surfaces of the first dust-proof and explosion-proof transparent door 102 or the second dust-proof and explosion-proof transparent door 202 is removed by moving the dust-proof and explosion-proof transparent door cleaner 303.

[0046] A method for using a dust removal system in combination with a dust-proof device for a tunneling face provided by an embodiment of the present invention includes the following steps:

[0047] Step 1: Install the dust-proof device for the tunneling face on the sidewalls 10 of the roadheader body on both sides of the roadheader 1 through the first hinge leaf 101 and the second hinge leaf 201;

[0048] Step 2: The dust removal air duct 301 and the air supply air duct 302 are respectively erected on both sides of the roadway surrounding rock 2; the front ends of the dust removal air duct 301 and the air supply air duct 302 are both arranged in the approximate sealed space formed by the dust-proof device for the tunneling face and the tunneling face. The rear ends of the dust removal air duct 301 and the air supply air duct 302 are respectively connected to a dust removal fan and an air supply fan; the dust-proof and explosion-proof transparent door cleaner 303 is adsorbed on the inner and outer surfaces of the first dust-proof and explosion-proof transparent door 102 or the second dust-proof and explosion-proof transparent door 202;

[0049] Step 3: When the roadheader 1 is tunneling, after starting the dust removal fan and the air supply fan, adjust the dust-proof device for the tunneling face to the dust-proof state; suck the dust accumulated in the approximate sealed space formed by the dust-proof device for the tunneling face and the tunneling face into the dust removal fan through the dust removal air duct 301 to eliminate it, and supply fresh air flow into the approximate sealed space through the air supply fan to realize the circulating flow of air in the approximate sealed space;

[0050] Step 4: When the tunneling work stops or the dust-proof device for the tunneling face hinders the attitude adjustment, movement of the roadheader 1 or the back-and-forth movement of the operating personnel at the tunneling face heading, the dust-proof device for the tunneling face can be adjusted to the fully retracted state or the deployed state. After the dust-proof device for the tunneling face is adjusted to the fully retracted state, the dust removal air duct 301 and the air supply air duct 302 can be closed;

[0051] Step 5: When dust accumulates on the surface of the first dustproof and explosion-proof transparent door 102 or the second dustproof and explosion-proof transparent door 202, affecting the working line of sight, the dustproof and explosion-proof transparent door cleaner 303 can be moved on the surface of the first dustproof and explosion-proof transparent door 102 or the second dustproof and explosion-proof transparent door 202 by manual or electric drive to achieve the effect of removing dust accumulation.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms may refer to different embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dust-proof device supporting a dust removal system for a tunneling face, which is used in cooperation with the dust-proof device for the tunneling face, and the dust-proof device for the tunneling face is used in cooperation with a roadheader; it is characterized in that, The dust-proof device for the tunneling face is installed on the tunneling machine, and includes a first hinge leaf, a first dust-proof explosion-proof transparent door, a second hinge leaf, and a second dust-proof explosion-proof transparent door. The first dust-proof explosion-proof transparent door and the second dust-proof explosion-proof transparent door are symmetrically distributed on both sides of the tunneling machine and are respectively fixed to the rotating leaves of the first hinge leaf and the rotating leaves of the second hinge leaf. The fixed leaves connected to the rotating leaves of the first hinge leaf and the fixed leaves connected to the rotating leaves of the second hinge leaf are respectively installed on the side walls of the tunneling machine body on both sides of the tunneling machine; the first dust-proof explosion-proof transparent door and the second dust-proof explosion-proof transparent door are connected to the side wall of the tunneling machine body between the rear of the cutting head swing arm of the tunneling machine and the front of the driver's seat of the tunneling machine; The dust-proof device for the tunneling face further includes a first dust-proof explosion-proof transparent door outer frame, a first flexible soft sealing frame, a second dust-proof explosion-proof transparent door outer frame, and a second flexible soft sealing frame; the first flexible soft sealing frame and the second flexible soft sealing frame are respectively fixed to the first dust-proof explosion-proof transparent door and the second dust-proof explosion-proof transparent door through the first dust-proof explosion-proof transparent door outer frame and the second dust-proof explosion-proof transparent door outer frame; both the first dust-proof explosion-proof transparent door and the second dust-proof explosion-proof transparent door are made of any one of tempered glass, explosion-proof glass, bullet-proof glass, and transparent hard plastic; both the first flexible soft sealing frame and the second flexible soft sealing frame are made of soft rubber; The dust removal system supporting the dust-proof device for the tunneling face includes a dust removal air duct, a supply air duct, a dust-proof explosion-proof transparent door cleaner, a dust removal fan, and a supply air fan; the dust removal air duct and the supply air duct are respectively erected on both sides of the roadway surrounding rock. The front end of the dust removal air duct is located in the approximately enclosed space formed by the dust-proof device for the tunneling face and the tunneling face. The rear end of the dust removal air duct is connected to the dust removal fan located behind the tunneling machine, and the body of the dust removal air duct is in extrusion contact with the second flexible soft sealing frame; the front end of the supply air duct is located in the approximately enclosed space formed by the dust-proof device for the tunneling face and the tunneling face. The rear end of the supply air duct is connected to the supply air fan located behind the tunneling machine, and the body of the supply air duct is in extrusion contact with the first flexible soft sealing frame; the dust-proof explosion-proof transparent door cleaner is adsorbed inside and outside the inner and outer surfaces of the first dust-proof explosion-proof transparent door or the second dust-proof explosion-proof transparent door; The dust-proof explosion-proof transparent door cleaner adopts an existing manual or automatic glass cleaner, and this glass cleaner includes two cleaner bodies that can be suctioned together, and the two cleaner bodies are respectively adsorbed inside and outside the inner and outer surfaces of the first dust-proof explosion-proof transparent door or the second dust-proof explosion-proof transparent door.

2. A method for using a dust-blocking device at a tunneling face, characterized in that, It includes the following steps: Step 1: Install the dust-proof device for the tunneling face on the side walls of the tunneling machine body on both sides of the tunneling machine through the first hinge leaf and the second hinge leaf; Step 2: When the tunneling machine needs to carry out tunneling work, the first and second dustproof and explosion-proof transparent doors are driven manually or electrically to rotate around the central axis of the first and second hinged blades, respectively. This makes the plane of the first and second dustproof and explosion-proof transparent doors approximately perpendicular to the plane of the tunneling machine's side wall, thus putting the dustproof device at the tunneling face into dustproof mode. Step 3: If the tunneling work is stopped or the dust blocking device at the tunneling face obstructs the adjustment of the tunneling machine's posture, movement, or the movement of workers to and from the tunneling face, the first and second dust blocking explosion-proof transparent doors can be manually or electrically driven to rotate around the central axis of the first and second hinged blades, respectively, so that the dust blocking device at the tunneling face enters the fully retracted or extended state. Step 4: Adjust the dust-blocking device status of the tunneling face in a timely manner according to the current working status of the tunneling machine and the operational needs, following Steps 2 and 3.

3. A method for using a dust removal system配套 with a dust blocking device at a tunneling working face, characterized in that, Includes the following steps: Step 1: Install the dust-blocking device at the tunneling face onto the side walls of the tunneling machine on both sides of the machine body via the first hinged flap and the second hinged flap; Step 2: The dust removal duct and the air supply duct are respectively installed on both sides of the surrounding rock of the roadway; the front ends of the dust removal duct and the air supply duct are placed in the nearly enclosed space formed by the dust blocking device and the working face of the tunneling face, and the rear ends of the dust removal duct and the air supply duct are respectively connected to the dust removal fan and the air supply fan; the dust-proof explosion-proof transparent door cleaner is attached to the inner and outer surfaces of the first dust-proof explosion-proof transparent door or the second dust-proof explosion-proof transparent door; Step 3: When the tunneling machine is tunneling, turn on the dust removal fan and the air supply fan, and adjust the dust blocking device at the tunneling face to the dust blocking state; the dust accumulated in the near-closed space formed by the dust blocking device and the tunneling face is sucked into the dust removal fan and eliminated by the dust removal fan, and fresh air is supplied to the near-closed space by the air supply fan to realize the circulation of air in the near-closed space; Step 4: When the tunneling work stops or the dust blocking device at the tunneling face obstructs the adjustment of the tunneling machine's posture, movement, or the movement of workers to and from the tunneling face, the dust blocking device at the tunneling face can be adjusted to the fully retracted or extended state. After the dust blocking device at the tunneling face is adjusted to the fully retracted state, the dust removal duct and the air supply duct can be closed. Step 5: When dust accumulates on the surface of the first or second dustproof and explosion-proof transparent door, affecting the operator's visibility, the dustproof and explosion-proof transparent door cleaner can be manually or electrically controlled to move on the surface of the first or second dustproof and explosion-proof transparent door to remove the accumulated dust.

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