Mining dust remover air duct used in cooperation with tunneling equipment

Abstract

A mining dust remover air duct used in cooperation with tunneling equipment comprises a rigid dust suction air duct, and a plurality of detachable supporting frames are installed at the bottom of the rigid dust suction air duct. The mining dust remover air duct used in cooperation with the tunneling equipment has the advantages that the rigid dust suction air duct is connected with the tunneling equipment through the supporting frame, the air supply pipe system is installed on the rigid dust suction air duct, the air supply pipe system and the dust suction air duct are integrated, and therefore the dust suction air duct can be used for dust removal. Cooperative movement of dust removal and ventilation functions is achieved, in the advancing process of the tunneling equipment, the air supply pipe system and the dust suction air duct can synchronously move along with the tunneling equipment without shutdown adjustment, frequent shutdown caused by independent movement of a traditional split type air duct and an air supply pipeline is avoided, the labor intensity of workers is effectively reduced, and the working efficiency is improved. And meanwhile, the dust falling efficiency of the tunneling head-on is effectively ensured, and great significance is achieved for achieving safe and efficient production.

Description

Technical Field

[0001] This utility model relates to the field of mining dust removal ventilation duct technology, specifically a mining dust collector ventilation duct used in conjunction with tunneling equipment. Background Technology

[0002] Dust control is indispensable in mining operations. Improper dust control leading to excessive dust can affect the breathing and vision of underground workers, posing significant safety hazards. Currently, underground dust control operations typically involve extending the suction port of the mine dust collector to the mining location using a ventilation duct. To balance the negative pressure generated by the suction, pipelines are also needed to connect to the mine's air supply system. When the tunneling equipment moves, the ventilation duct and air supply pipelines must be moved adaptively by the workers. Furthermore, the tunneling equipment must be stopped when the ventilation duct is moved, and mining operations can only resume after the ventilation duct is in place. This not only increases the labor intensity of the workers but also reduces the efficiency of mining operations in the mine. Utility Model Content

[0003] The purpose of this utility model is to provide a dust collector duct for use with tunneling equipment, which combines the air supply system pipeline and the dust extraction duct into one, and can move with the tunneling equipment without affecting the mining operation, thus solving the problems in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a dust collector duct for use with tunneling equipment, including a rigid dust extraction duct, several detachable support frames installed at the bottom of the rigid dust extraction duct, a connected three-way connecting beam installed at one end of the rigid dust extraction duct along its length, flexible dust extraction ducts installed at both inlet ends of the three-way connecting beam, a transition dust extraction duct installed at the other end of the rigid dust extraction duct along its length, and an air supply pipe system installed on the upper part of the rigid dust extraction duct. The air supply pipe system includes a standard air supply duct, a transition air supply duct, and a telescopic air supply duct that are interconnected. The telescopic air supply duct can extend and retract on the rigid dust extraction duct. A track is provided on the upper part of the rigid dust extraction duct along its length, and several sliding trolleys that cooperate with the track are installed at the bottom of the telescopic air supply duct. The sliding trolley at the foremost position of the telescopic air supply duct can be locked on the track. The support frame includes uprights on both sides of the rigid dust extraction duct. The upper ends of the uprights are fixed to the sides of the rigid dust extraction duct. A lifting connecting sleeve is also installed on the upright. A hanging bracket is provided inside the connecting sleeve, and a through hole is formed in the connecting sleeve. Several limiting holes that mate with the through holes are provided on the uprights. Connecting bolts are installed in the limiting holes and through holes. A reinforcing rib is also provided between the uprights on both sides. Several spaced flexible connecting sections are installed on the rigid dust extraction duct. The sliding trolley includes a frame. Two wheels that mate with tracks are installed on both sides of the bottom of the frame. Hub motors are installed inside the wheels. Extension rods are provided at both ends of the frame in the width direction. Stirrups are installed between the two extension rods, and the stirrups secure the telescopic air supply duct to the frame. A horizontally arranged screw is installed on a sliding trolley at the foremost position of the telescopic air supply duct. The trolley frame has bearing seats that mate with both ends of the screw along its length. Two sets of oppositely helical nut sleeves are installed on the screw, each nut sleeve having a limiting block that mates with the track. A guide block is also provided on the nut sleeve. A guide groove mates with the guide block is provided on the trolley frame. A limit motor is installed on the trolley frame, and a drive gear meshing with the screw is on the output shaft of the limit motor. Activation of the limit motor moves the limiting blocks on both sides to tighten the track, thus locking the sliding trolley onto the track. A limit stop is installed at the front end of the track. When the trolley frame contacts the limit stop, the limiting blocks are tightened on the track. A pull-wire displacement sensor is also installed between the limit stop and the trolley frame. The housing of the pull-wire displacement sensor is fixed to the trolley frame, and one end of the pull rope of the sensor is fixed to the limit stop. The pull-wire displacement sensor is connected to the hub motor and the limit motor via control circuitry.

[0005] The positive effects of this utility model are as follows: The dust collector duct of this utility model, used in conjunction with tunneling equipment, features a rigid dust extraction duct connected to the tunneling equipment via a support frame. An air supply pipe system is installed on the rigid dust extraction duct. By integrating the air supply pipe system with the dust extraction duct, coordinated movement of dust removal and ventilation functions is achieved. During the advancement of the tunneling equipment, the air supply pipe system and the dust extraction duct can move synchronously with the tunneling equipment without stopping for adjustment. This avoids the frequent downtime caused by the independent movement of traditional separate ducts and air supply pipes. It not only effectively reduces the labor intensity of workers but also significantly improves the efficiency of mining operations in the mine. At the same time, it effectively ensures the dust reduction efficiency at the tunneling face, which is of great significance for achieving safe and efficient production. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model;

[0007] Figure 2 This is the front view of this utility model;

[0008] Figure 3 yes Figure 2 An enlarged view of the sectional view along the AA direction;

[0009] Figure 4 This is a structural schematic diagram of the sliding trolley;

[0010] Figure 5 This is a schematic diagram of the structure in which the sliding trolley is locked on the track;

[0011] Figure 6 yes Figure 5 An enlarged view of the BB-axis sectional view;

[0012] Figure 7 This is a schematic diagram of a wire displacement sensor installed between the sliding trolley and the limit stop;

[0013] Figure 8 This is a schematic diagram showing the state of the present invention installed on a tunneling machine and a secondary transporter;

[0014] Figure 9 yes Figure 8 A schematic diagram showing the telescopic ventilation duct being extended as the medium-structure tunneling machine moves forward. Detailed Implementation

[0015] The present invention describes a dust collector ventilation duct for use with tunneling equipment, such as... Figure 1 and Figure 2As shown, it includes a rigid dust extraction duct 1, and several detachable support frames are installed at the bottom of the rigid dust extraction duct 1. The support frames are used to connect with the tunneling equipment. The support frames can be existing steel structure frames, connecting rod frames, etc., and the tunneling equipment can be fixed and disassembled through threaded fasteners, snap-fit ​​connectors, etc.

[0016] A three-way connecting beam 2 is installed at one end of the rigid dust extraction duct 1 along its length. Flexible dust extraction ducts 3 are installed at both inlet ends of the three-way connecting beam 2. The flexible dust extraction ducts 3 are located at the tunneling head of the tunneling equipment. They can be used in conjunction with the devices at the tunneling operation position to facilitate the fixed installation and arrangement of the tunneling equipment, allowing the air inlet to be closer to the first dust generation point, thereby achieving effective dust removal.

[0017] A transition dust extraction duct 4 is installed at the other end of the rigid dust extraction duct 1 along its length, and the transition dust extraction duct 4 is connected to the mine dust collector. An air supply duct system is installed on the upper part of the rigid dust extraction duct 1. The air supply duct system includes interconnected standard air supply ducts 5, transition air supply ducts 6, and telescopic air supply ducts 7. The telescopic air supply duct 7 can extend and retract from the rigid dust extraction duct 1 to accommodate the movement of the tunneling equipment underground. The transition air supply duct 6 is fixedly connected to the tail of the secondary transport machine, and the standard air supply duct 5 is connected to the mine's air supply system to provide fresh air to the tunneling location.

[0018] In order to enable the telescopic air supply duct 7 to move on the rigid dust extraction duct 1, a track 8 is provided on the upper part of the rigid dust extraction duct 1 along the length direction. Several sliding trolleys 9 that cooperate with the track 8 are installed at the bottom of the telescopic air supply duct 7. The sliding trolley 9 at the foremost position of the telescopic air supply duct 7 can be locked on the track 8.

[0019] like Figure 8 and Figure 9 As shown, the front end of the telescopic ventilation duct 7 is fixed on the track 8 and can move together with the rigid dust extraction duct 1. The transition ventilation duct 6 is fixed at the tail of the secondary transporter. When the tunneling equipment is operating underground, the rear end is connected to the secondary transporter to transfer the excavated material. The secondary transporter includes two sets of conveyor belt mechanisms: a front head and a rear tail. The front head is connected to the tunneling equipment, and the rear tail can move relative to the front head. During the tunneling operation, the tunneling equipment will drive the head forward, and after advancing a certain distance, the tail will move to compensate for the corresponding distance, ensuring that the conveyor belts between the head and tail always overlap to guarantee normal transportation.

[0020] During operation, the tunneling equipment continuously moves forward, driving the head of the secondary transporter along with it. At this time, the tail of the secondary transporter remains relatively stationary, and there is an overlapping section between the two conveyor belts, allowing for normal material transport. The front end of the telescopic ventilation duct 7 moves forward along with the rigid dust extraction duct 1, while the transition ventilation duct 6 remains relatively stationary. The telescopic ventilation duct 7 is extended to maintain the supply of fresh air. After the head of the secondary transporter has advanced a certain distance, the tail section must also move forward to ensure the normal transport function of the secondary transporter. At this time, the transition ventilation duct 6 moves forward, and the telescopic ventilation duct 7 retracts, thus accommodating the segmented movement of the tunneling equipment and the secondary transporter within the mine.

[0021] Furthermore, in order to ensure the support frame is securely mounted on the tunneling equipment and that the relative height of the ventilation duct on the tunneling equipment can be adjusted via the support frame to adapt to roadways of different heights, thus ensuring the normal movement of the entire unit within the roadway, such as... Figure 3 As shown, the support frame may include uprights 10 arranged on both sides of the rigid dust extraction duct 1. The upper end of the uprights 10 is fixedly arranged on the side of the rigid dust extraction duct 1. A lifting connecting sleeve 11 is also installed on the uprights 10. A bracket 12 is arranged on the inner side of the connecting sleeve 11. The bracket 12 can fix the connecting sleeve 11 on the tunneling equipment.

[0022] To achieve the limiting and locking of the connecting sleeve 11 at different height positions on the upright 10, a through hole is provided on the connecting sleeve 11, and a number of limiting holes 13 that cooperate with the through hole are provided on the upright 10. Connecting bolts 14 are installed in the limiting holes 13 and the through hole. By inserting the connecting bolts 14 into the limiting holes 13 at different height positions, the connecting sleeve 11 can be locked at the corresponding height on the upright 10, thereby adjusting the height position of the air duct on the tunneling equipment.

[0023] To enhance the structural strength of the support frame, a reinforcing rib frame 15 is also provided between the uprights 10 on both sides.

[0024] Furthermore, to accommodate positional deviations in the rigid dust extraction duct 1, several spaced flexible connecting sections 16 can be installed on the rigid dust extraction duct 1. The flexible connecting sections 16 can be stretched or contracted to adapt to installation deviations in the tunneling equipment.

[0025] Furthermore, such as Figure 4As shown, the sliding trolley 9 may include a frame 17. Both sides of the bottom of the frame 17 are equipped with wheels 18 that cooperate with the track 8. A hub motor is installed inside each wheel 18, which can drive the wheels 18 to move along the track 8. To achieve a stable connection between the sliding trolley 9 and the telescopic air supply duct 7, extension rods 19 are provided at both ends of the frame 17 in the width direction. Stirrups 20 are installed between the two extension rods 19, and the stirrups 20 secure the telescopic air supply duct 7 to the frame 17.

[0026] Furthermore, in order to lock the sliding trolley 9 at the foremost position of the telescopic ventilation duct 7 onto the track 8, such as... Figure 5 and Figure 6 As shown, a horizontally arranged screw 21 can be installed on the sliding trolley 9 at the foremost position of the telescopic air supply duct 7, and the frame 17 is provided with bearing seats that cooperate with both ends of the screw 21 in the length direction.

[0027] Two sets of nut sleeves 22 with opposite directions of rotation are installed on the screw 21. Each nut sleeve 22 is provided with a limiting block 23 that cooperates with the rail 8, and the limiting block 23 can be locked onto the rail 8. A guide block 28 is also provided on the nut sleeve 22, and a guide groove 29 that cooperates with the guide block 28 is provided on the frame 17. The arrangement of the cooperating guide block 28 and guide groove 29 allows the nut sleeve 22 to move horizontally when the screw 21 rotates.

[0028] The frame 17 is equipped with a limit motor 24. The output shaft of the limit motor 24 is provided with a drive gear 25 that meshes with the screw 21. When the limit motor 24 is started, it can drive the limit blocks 23 on both sides to move and tighten the track 8, thereby locking the position of the sliding trolley 9 on the track 8.

[0029] Once the front end of the telescopic air supply duct 7 is locked onto the track 8, it can move forward together with the rigid dust extraction duct 1. At the same time, the limiting block 23 can also release the lock on the track 8, allowing the front end of the telescopic air supply duct 7 to move relative to the track 8, making room for the front end of the rigid dust extraction duct 1. This allows for the construction of a top support mechanism on the upper part of the tunneling equipment before excavation operations. After the support mechanism is completed, the sliding trolley 9 can drive the front end of the telescopic air supply duct 7 back to the set position, providing the required fresh air to the tunneling operation location.

[0030] Furthermore, in order to allow space at a precise distance at the front end of the telescopic ventilation duct 7 according to different types of tunneling equipment, so as to facilitate the construction of the top support mechanism above the tunneling equipment, a limit stop bar 26 can be installed at the front end of the track 8. The limit stop bar 26 provides a limit for the reset movement of the sliding trolley 9. When the frame 17 contacts the limit stop bar 26, the limit block 23 is braced on the track 8.

[0031] To achieve accurate measurement and feedback of the clearance distance of the sliding steer 9, such as Figure 7 As shown, a cable displacement sensor 27 can also be installed between the limit stop 26 and the frame 17. The housing of the cable displacement sensor 27 is fixed to the frame 17, and one end of the cable of the cable displacement sensor 27 is fixed to the limit stop 26. The cable displacement sensor 27 is connected to the hub motor and the limit motor 24 through control lines. When the cable displacement sensor 27 detects that it has moved to a specified distance, it sends a signal to the hub motor to stop the sliding trolley 9 from moving, and sends a signal to the limit motor 24 to move the limit block 23 to tighten the track 8, thereby achieving relative locking of the sliding trolley 9 on the track 8 and making room for the necessary top support mechanism to be built on the upper part of the tunneling equipment.

[0032] This utility model describes a mine dust collector ventilation duct used in conjunction with tunneling equipment. It does not occupy roadway space, and its relocation does not affect the operation of other equipment, making it convenient and quick. Through the effective arrangement of the mine dust collector ventilation duct, comprehensive automated dust control at the tunneling face is truly achieved, responding to the call for "mechanization replacing manpower and automation reducing manpower." It constructs a new type of mine dust collection ventilation duct system with adaptive adjustment, precise control, high safety, and low maintenance costs, providing key technical support for intelligent mine construction. Its comprehensive technical indicators have reached the international advanced level.

[0033] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A mine dust extractor airway for use with a mucking apparatus, characterised in that: The system includes a rigid dust extraction duct (1), with several detachable support frames installed at the bottom of the rigid dust extraction duct (1). A connecting three-way beam (2) is installed at one end of the rigid dust extraction duct (1) along its length. Flexible dust extraction ducts (3) are installed at both inlet ends of the three-way beam (2). A transition dust extraction duct (4) is installed at the other end of the rigid dust extraction duct (1). An air supply duct system is installed on the upper part of the rigid dust extraction duct (1). The air supply duct system includes... There are interconnected standard air supply ducts (5), transition air supply ducts (6) and telescopic air supply ducts (7), wherein the telescopic air supply duct (7) can extend and retract on the rigid dust extraction duct (1), and a track (8) arranged along the length direction is provided on the upper part of the rigid dust extraction duct (1). Several sliding trolleys (9) that cooperate with the track (8) are installed at the bottom of the telescopic air supply duct (7), and the sliding trolley (9) at the foremost position of the telescopic air supply duct (7) can be locked on the track (8).

2. A mine dust extractor air duct for use with a mated excavation equipment according to claim 1, characterized in that: The support frame includes uprights (10) on both sides of the rigid dust extraction duct (1). The upper end of the uprights (10) is fixedly installed on the side of the rigid dust extraction duct (1). A lifting connecting sleeve (11) is also installed on the uprights (10). A hanging bracket (12) is provided on the inner side of the connecting sleeve (11). A through hole is provided on the connecting sleeve (11). Several limiting holes (13) that cooperate with the through hole are provided on the uprights (10). Connecting bolts (14) are installed in the limiting holes (13) and the through holes. A reinforcing rib frame (15) is also provided between the uprights (10) on both sides.

3. The mine dust collector ventilation duct used in conjunction with tunneling equipment according to claim 1, characterized in that: Several flexible connecting sections (16) are installed at intervals on the rigid dust extraction duct (1).

4. A mine dust scrubber air duct for use with a mated excavation equipment as claimed in claim 1, characterized in that: The sliding trolley (9) includes a frame (17), and two sides of the bottom of the frame (17) are equipped with traveling wheels (18) that cooperate with the track (8). The traveling wheels (18) are equipped with hub motors. Extension rods (19) are provided at both ends of the frame (17) in the width direction. Stirrups (20) are installed between the two extension rods (19). The stirrups (20) fasten the telescopic air supply tube (7) to the frame (17).

5. A mine dust extractor air duct for use with a mated excavation apparatus as claimed in claim 4, characterised in that: A horizontally arranged screw (21) is installed on the sliding trolley (9) at the front end of the telescopic air supply duct (7). The frame (17) is provided with bearing seats that cooperate with both ends of the screw (21) in the length direction. Two sets of nut sleeves (22) with opposite rotation directions are installed on the screw (21). Each nut sleeve (22) is provided with a limiting block (23) that cooperates with the track (8). A guide block (28) is also provided on the nut sleeve (22). A guide groove (29) that cooperates with the guide block (28) is opened on the frame (17). A limiting motor (24) is installed on the frame (17). A drive gear (25) that meshes with the screw (21) is provided on the output shaft of the limiting motor (24). When the limiting motor (24) is started, it can drive the limiting blocks (23) on both sides to move and tighten the track (8), thereby locking the position of the sliding trolley (9) on the track (8).

6. A mine dust extractor air duct for use with a mated excavation apparatus as claimed in claim 5, characterised in that: A limit stop bar (26) is installed at the front end of the track (8). When the frame (17) comes into contact with the limit stop bar (26), the limit block (23) is braced on the track (8). A pull wire displacement sensor (27) is also installed between the limit stop bar (26) and the frame (17). The housing of the pull wire displacement sensor (27) is fixed on the frame (17), and one end of the pull rope of the pull wire displacement sensor (27) is fixed on the limit stop bar (26). The pull wire displacement sensor (27) is connected to the hub motor and the limit motor (24) through the control line.

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