A telescopic air duct device suitable for a boom-type tunneling machine in an underground mine

Abstract

The utility model discloses a telescopic air duct device suitable for underground mine cantilever type heading machine, including fixed base, be equipped with main telescopic device on the fixed base, the telescopic end of main telescopic device is connected with telescopic big arm one end, and the side part fixed of telescopic big arm is equipped with air duct, and the other end of telescopic big arm is equipped with multiple air ducts with vice telescopic device cooperation, and multiple vice telescopic devices are in the surface of telescopic big arm and are distributed in the form of ladder, when the utility model carries out heading dust removal operation, can through negative pressure air duct one end and connects the fan export, utilizes main telescopic device and vice telescopic device to carry out multistage telescoping to adjust the movement of dust removal air duct before and after, and it carries out distance adjustment according to the operation condition, improves dust removal efficiency and work efficiency, reduces operation difficulty and security risk.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery application technology, and in particular to a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines. Background Technology

[0002] Currently, the existing ventilation ducts are not well connected during tunneling operations and cannot achieve the desired level. Moreover, they are limited by the area and cannot move synchronously with the tunneling. Operators need to repeatedly extend the ventilation ducts, resulting in low work efficiency and high safety risks. Therefore, a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines is designed to improve dust removal efficiency while ensuring the safety of personnel. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines. The length of the ventilation duct can be adjusted by moving it back and forth, thereby improving work efficiency and reducing safety risks.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines, including a fixed base, a main telescopic device on the fixed base, the telescopic end of the main telescopic device being connected to one end of the telescopic boom, a ventilation duct being fixedly provided on the side of the telescopic boom, and multiple ventilation ducts cooperating with auxiliary telescopic devices being provided at the other end of the telescopic boom, with the multiple auxiliary telescopic devices being distributed in a stepped manner on the surface of the telescopic boom.

[0005] Preferably, the main telescopic device and the auxiliary telescopic device are hydraulic cylinder structures, wherein the size of the main telescopic device is larger than that of the auxiliary telescopic device.

[0006] Preferably, the cylinder portion of the main telescopic device is fixedly connected to the fixed base via a fixed column.

[0007] Preferably, the air duct on the side of the telescopic boom is connected and fixed to the air duct via an air duct fixer.

[0008] Preferably, in the air ducts that cooperate with the auxiliary telescopic device, every two air ducts form a group, one air duct is connected to the cylinder of the auxiliary telescopic device through an air duct fixer, and the other air duct is connected to the telescopic rod of the auxiliary telescopic device through an air duct fixer.

[0009] Preferably, the multiple auxiliary telescopic devices are distributed in a stepped manner on the upper and lower surfaces of the telescopic boom, that is, the lengths of the multiple auxiliary telescopic devices extending from the upper and lower surfaces of the telescopic boom are different.

[0010] Preferably, the number of auxiliary telescopic devices distributed on the upper surface of the telescopic boom is the same as the number of auxiliary telescopic devices distributed on the lower surface of the telescopic boom.

[0011] Preferably, in the air duct that cooperates with the auxiliary telescopic device, the side of the air duct fixing device is also provided with an air duct support frame, and the upper and lower sides of the air duct support frame cooperate with the auxiliary telescopic devices distributed on the upper and lower surfaces of the telescopic boom, respectively.

[0012] Preferably, the duct support frame is a rectangular block structure, with its top connected to the auxiliary telescopic devices distributed on the upper surface of the telescopic arm via a connecting plate, and its bottom connected to the auxiliary telescopic devices distributed on the lower surface of the telescopic arm via a connecting plate.

[0013] Preferably, the duct fixture is an L-shaped bracket structure.

[0014] The beneficial effects of this utility model are:

[0015] 1. When performing dust removal operations during tunneling, this utility model can connect one end of the negative pressure ventilation duct to the fan outlet and use the main telescopic device and the auxiliary telescopic device to perform multi-stage telescopic movement, thereby adjusting the dust removal ventilation duct to move back and forth. The distance can be adjusted according to the operation, which improves dust removal efficiency and work efficiency, and reduces operation difficulty and safety risks.

[0016] 2. This utility model extends the ventilation duct while tunneling. The main telescopic device is installed on the tunneling machine and can move synchronously with the tunneling and make dust removal adjustments, thereby improving the dust removal accuracy and safety factor.

[0017] 3. This utility model can adapt to various terrains and is suitable for various dust removal operations such as inclined and horizontal ground; its structure is simple, easy to use and maintain, and easy to promote. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines;

[0019] Figure 2 This is a structural schematic diagram from another perspective of a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-2 As shown, a telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines includes a fixed base 1, on which a main telescopic device 3 is provided. The telescopic end of the main telescopic device 3 is connected to one end of the telescopic boom 4. A ventilation duct 9 is fixedly provided on the side of the telescopic boom 4, and multiple ventilation ducts 9 that cooperate with auxiliary telescopic devices 6 are provided at the other end of the telescopic boom 4. The multiple auxiliary telescopic devices 6 are distributed in a stepped manner on the surface of the telescopic boom 4.

[0022] In this embodiment, the telescopic boom 4 is used for the movement of the entire device in the front-to-back direction;

[0023] Preferably, the main telescopic device 3 and the auxiliary telescopic device 6 are hydraulic cylinder structures, wherein the size of the main telescopic device 3 is larger than that of the auxiliary telescopic device 6.

[0024] Preferably, the cylinder part of the main telescopic device 3 is fixedly connected to the fixed base 1 via the fixed column 2.

[0025] Preferably, the air duct 9 on the side of the telescopic boom 4 is connected and fixed to the air duct 9 by the air duct fixer 8.

[0026] Preferably, in the air ducts 9 that cooperate with the auxiliary telescopic device 6, every two air ducts 9 form a group. One air duct 9 is connected to the cylinder of the auxiliary telescopic device 6 through an air duct retainer 8, and the other air duct 9 is connected to the telescopic rod of the auxiliary telescopic device 6 through an air duct retainer 8. With this design, during the extension or retraction of the auxiliary telescopic device 6, the position of one air duct 9 remains unchanged, while the other air duct 9 moves away from or closer to the first air duct 9, thereby allowing adjustment of the distance between the air ducts 9.

[0027] In the above technical solution, in the air duct 9 that cooperates with the auxiliary telescopic device 6, the air duct retainer 8 can reduce friction on the telescopic boom 4 and facilitate the sliding of the air duct 9.

[0028] Preferably, the multiple auxiliary telescopic devices 6 are distributed in a stepped manner on the upper and lower surfaces of the telescopic arm 4, meaning that the lengths of the multiple auxiliary telescopic devices 6 extending from the upper and lower surfaces of the telescopic arm 4 are different. This design facilitates the installation of multiple air ducts 9 connected to the ends of the auxiliary telescopic devices 6 and avoids friction or interference between them.

[0029] Preferably, the number of auxiliary telescopic devices 6 distributed on the upper surface of the telescopic boom 4 is the same as the number of auxiliary telescopic devices 6 distributed on the lower surface of the telescopic boom 4.

[0030] Preferably, in the air duct 9 that cooperates with the auxiliary telescopic device 6, the side of the air duct fixing device 8 is also provided with an air duct support frame 7. The upper and lower sides of the air duct support frame 7 cooperate with the auxiliary telescopic devices 6 distributed on the upper and lower surfaces of the telescopic arm 4, respectively. With this design, the same air duct fixing device 8 can be connected and cooperated with the upper and lower auxiliary telescopic devices 6 through the air duct support frame 7. In this way, when the auxiliary telescopic device 6 extends or retracts, the air duct 9 is subjected to more uniform force and moves more smoothly.

[0031] Preferably, the duct support frame 7 is a rectangular block structure, with its top connected to the auxiliary telescopic devices 6 distributed on the upper surface of the telescopic arm 4 via a connecting plate, and its bottom connected to the auxiliary telescopic devices 6 distributed on the lower surface of the telescopic arm 4 via a connecting plate.

[0032] Preferably, the duct fixing device 8 is an L-shaped bracket structure.

[0033] The working principle of this embodiment is as follows:

[0034] In this embodiment, the upper surface of the telescopic boom 4 is provided with three auxiliary telescopic devices 6 (i.e., the second auxiliary telescopic device 602, the fourth auxiliary telescopic device 604, and the sixth auxiliary telescopic device 606), and the lower surface is provided with three auxiliary telescopic devices 6 (i.e., the first auxiliary telescopic device 601, the third auxiliary telescopic device 603, and the fifth auxiliary telescopic device 605); then, from the inside out, six air duct support frames 7 are provided sequentially (i.e., the first air duct support frame 701, the second air duct support frame 702, the third air duct support frame 703, the fourth air duct support frame 704, the fifth air duct support frame 705, and the sixth air duct support frame 706).

[0035] When the main telescopic device 3 is activated, its telescopic arm 4 extends, thereby driving the six auxiliary telescopic devices 6 and six air ducts 9 to move together. After the approximate distance is reached, a fine-tuning process is required through the auxiliary telescopic devices 6. Specifically, when the first auxiliary telescopic device 601 and the second auxiliary telescopic device 602 extend or retract synchronously, the second air duct 9 located at the end of the telescopic arm 4 moves away from or closer to the first air duct 9, stopping after completing the corresponding distance. When the third auxiliary telescopic device 603 and the fourth auxiliary telescopic device 604 extend or retract synchronously, the fourth air duct 9 located at the end of the telescopic arm 4 moves away from or closer to the third air duct 9, stopping after completing the corresponding distance. When the fifth auxiliary telescopic device 605 and the sixth auxiliary telescopic device 606 extend or retract synchronously, the sixth air duct 9 located at the end of the telescopic arm 4 moves away from or closer to the fifth air duct 9, stopping after completing the corresponding distance. Through the above process, the spacing between multiple air ducts 9 can be adjusted, and different distance requirements can be met by adjusting the telescopic movement. After the movement is completed, the surfaces of the multiple ventilation ducts 9 are covered with sealing materials such as cloth to form ventilation channels, and then the tunneling operation can be carried out.

[0036] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines, comprising a fixed base (1), characterized in that: The fixed base (1) is provided with a main telescopic device (3). The telescopic end of the main telescopic device (3) is connected to one end of the telescopic boom (4). The side of the telescopic boom (4) is fixed with a wind duct (9). The other end of the telescopic boom (4) is provided with multiple wind ducts (9) that cooperate with the auxiliary telescopic devices (6). The multiple auxiliary telescopic devices (6) are distributed in a stepped manner on the surface of the telescopic boom (4).

2. The telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 1, characterized in that: The main telescopic device (3) and the auxiliary telescopic device (6) are hydraulic cylinder structures, wherein the main telescopic device (3) is larger than the auxiliary telescopic device (6).

3. A telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines according to claim 1, characterized in that: The cylinder part of the main telescopic device (3) is fixedly connected to the fixed base (1) through the fixed column (2).

4. A telescopic ventilation duct device suitable for cantilever tunneling machines in underground mines according to claim 1, characterized in that: The air duct (9) on the side of the telescopic boom (4) is connected and fixed to the air duct (9) by the air duct fixer (8).

5. A telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 1, characterized in that: In the air duct (9) that cooperates with the auxiliary telescopic device (6), every two air ducts (9) form a group. One air duct (9) is connected to the cylinder of the auxiliary telescopic device (6) through the air duct fixing device (8), and the other air duct (9) is connected to the telescopic rod of the auxiliary telescopic device (6) through the air duct fixing device (8).

6. A telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 5, characterized in that: The multiple auxiliary telescopic devices (6) are distributed in a stepped manner on the upper and lower surfaces of the telescopic boom (4), that is, the lengths of the multiple auxiliary telescopic devices (6) extending from the upper and lower surfaces of the telescopic boom (4) are different.

7. A telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 6, characterized in that: The number of auxiliary telescopic devices (6) distributed on the upper surface of the telescopic boom (4) is the same as the number of auxiliary telescopic devices (6) distributed on the lower surface of the telescopic boom (4).

8. A telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 7, characterized in that: In the air duct (9) that cooperates with the auxiliary telescopic device (6), the side of the air duct fixture (8) is also provided with an air duct support frame (7), and the upper and lower sides of the air duct support frame (7) cooperate with the auxiliary telescopic devices (6) distributed on the upper and lower surfaces of the telescopic boom (4), respectively.

9. A telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 8, characterized in that: The duct support frame (7) is a rectangular block structure. Its top is connected to the auxiliary telescopic device (6) distributed on the upper surface of the telescopic boom (4) through a connecting plate, and its bottom is connected to the auxiliary telescopic device (6) distributed on the lower surface of the telescopic boom (4) through a connecting plate.

10. A telescopic ventilation duct device for underground mine cantilever tunneling machines according to claim 4 or 5, characterized in that: The duct fixing device (8) is an L-shaped bracket structure.

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