Supporting device for unmanned mining of deep part of high-gas outburst coal seam

Abstract

The utility model discloses a supporting device for unmanned mining of a deep part of a high gas outburst coal seam, each supporting device comprises a plurality of supporting pieces and a frame body located in the supporting pieces, and the frame body is connected to the supporting pieces through a hydraulic supporting assembly and can drive the supporting pieces to contract; a hydraulic push rod is arranged on the frame body, one end of the hydraulic push rod is movably connected to the frame body, and the other end of the hydraulic push rod is connected to the frame body in the previous supporting device. By arranging the multiple sets of supporting devices, the hydraulic push rods are arranged on the supporting devices, every two adjacent supporting mechanisms can be connected through the corresponding hydraulic push rod, the previous supporting device can be pushed to move through the corresponding hydraulic push rod, so that the supporting mechanisms are driven to move in the coal roadway, automatic movement is achieved, manual assistance is not needed, and unmanned supporting in the low-oxygen environment is achieved; and the retractable mode is convenient for early-stage and later-stage storage.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunnel engineering technology, specifically to a support device for deep unmanned mining of high-gas outburst coal seams. Background Technology

[0002] Deep coal mining faces critical challenges such as high ground stress, high gas content, high ground temperature, and high pressurized water. Many countries have been forced to introduce regulations limiting mining depth, output, and even shutting down existing mines. my country stipulates that newly constructed outburst-prone mines cannot exceed 800 meters in depth and 5 million tons in annual output. High ground stress is a significant challenge in deep engineering and coal mining. In recent years, accidents caused by high ground stress have been frequent, resulting in serious casualties and economic losses. These accidents demonstrate that disasters caused by high ground stress, such as rock bursts, rock bursts, and gas outbursts, are characterized by their suddenness, destructiveness, and difficulty in early warning.

[0003] Currently, most of the support work after coal seam mining is carried out manually using anchor bolts and cables. However, the low-oxygen environment in deep coal seam mining is not suitable for manual support. Therefore, it is urgent to carry out research on fully automatic coal seam support devices that do not require manual assistance in order to cope with deep coal seam mining. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to solve the problem of difficulty in support during deep coal seam mining.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A support device for deep, unmanned mining of high-gas outburst coal seams is provided, consisting of several sets connected end to end. Each set of support devices includes several support components and a frame located inside the support components. The frame is connected to the support components via a drive support assembly and can drive the support components to retract.

[0007] A drive push rod is installed on the frame, with one end of the drive push rod movably connected to the frame and the other end connected to the frame inside the previous support device.

[0008] This application sets up several sets of support devices, each equipped with a hydraulic push rod. Adjacent support mechanisms can be connected via the hydraulic push rod, which can push the previous support device to move, thereby driving the support mechanism to move within the coal roadway. This automatic movement requires no manual assistance, enabling unmanned support in low-oxygen environments. The roadway is protected by a fully automatic support device, which moves forward, backward, left, and right by retracting the hydraulic push rod. This allows for coal mining in conjunction with unmanned tunneling equipment within the coal roadway, and the retractable design facilitates storage in the early and later stages.

[0009] As a further embodiment of this invention, the drive push rod is a hydraulic push rod or a pneumatic push rod.

[0010] As a further embodiment of this invention, the drive push rod is a pneumatic push rod.

[0011] As a further embodiment of this utility model: the support member includes an upper guard plate, a lower guard plate and two side guard plates, wherein the upper guard plate, the lower guard plate and the two side guard plates can be spliced ​​into a cylindrical structure when unfolded.

[0012] As a further embodiment of this utility model: the upper guard plate, the lower guard plate, and the two side guard plates are all arc-shaped plate structures, and the upper guard plate and the lower guard plate are symmetrically arranged, as are the two side guard plates.

[0013] As a further embodiment of this utility model: the drive support assembly includes a vertical hydraulic support column and a horizontal hydraulic support column, wherein the top and bottom of the frame are connected to the upper guard plate and the lower guard plate respectively through the vertical hydraulic support column; the left and right sides of the frame are connected to two side guard plates respectively through the horizontal hydraulic support column.

[0014] As a further embodiment of this utility model: four sets of hydraulic push rods are provided, which are respectively installed at the four corner positions inside the frame.

[0015] As a further embodiment of this utility model: the top front and rear sides of the upper guard plate are respectively connected to the support frame extension by the extension support column.

[0016] As a further embodiment of this utility model, grooves for the upper guard plate and the support frame are provided on both the upper guard plate and the support frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This application sets up a set of intelligent hydraulic support mechanisms and several sets of intelligent pneumatic support mechanisms. The intelligent hydraulic support mechanisms and intelligent pneumatic support mechanisms have the same overall structure, the difference being the hydraulic control and the pneumatic control.

[0019] Taking the intelligent hydraulic support mechanism as an example, the intelligent hydraulic support mechanism includes several hydraulic supports, each with a hydraulic push rod inside. Two adjacent hydraulic supports can be connected through the hydraulic push rod. The four hydraulic push rods can push the previous hydraulic support to move automatically without manual assistance, thus driving the hydraulic supports to move with the unmanned tunneling machine in the coal roadway. The cooperation between the intelligent hydraulic support mechanism and the intelligent pneumatic support mechanism can achieve unmanned support in a low-oxygen environment.

[0020] The roadway is fully supported by a set of hydraulic support systems and several pneumatic intelligent support systems. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the unmanned deep mining method for high-gas outburst coal seams according to an embodiment of the present invention;

[0022] Figure 2 This is a front view of the intelligent support mechanism according to an embodiment of the present utility model;

[0023] Figure 3 This is a front view of the intelligent support mechanism of this utility model when it is retracted;

[0024] Figure 4 This is a top view of the intelligent support mechanism according to an embodiment of the present utility model;

[0025] Figure 5 This is a top view of the intelligent support mechanism of this utility model when it is retracted;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Horizontal well; 2. Unmanned tunneling machine; 6. Intelligent hydraulic support mechanism; 20. Intelligent pneumatic support mechanism;

[0028] 601. Upper guard plate; 602. Side guard plate; 603. Lower guard plate; 604. Vertical hydraulic support column; 605. Horizontal hydraulic support column; 606. Frame; 607. Hydraulic push rod; 608. Air flotation conveyor; 609. Support frame extension; 610. Extension support column; 611. Guard plate groove. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Reference Figure 1 A support device for unmanned deep mining of high-gas outburst coal seams is applied in an unmanned deep coal seam mining system. The unmanned deep coal seam mining system includes an L-shaped horizontal shaft 1. The lower part of the L-shaped horizontal shaft 1 is provided with a coal roadway, a coal uncovering inclined roadway, a sealing roadway, and a support assembly chamber in sequence. The support assembly chamber is connected to the underground track roadway.

[0031] The support assembly chamber can be used to assemble unmanned roadway excavators, support devices, and other coal roadway excavation equipment, which are then transported to the inside of the coal roadway via sealed roadways and coal uncovering inclined roadways.

[0032] Reference Figure 1The support device includes an intelligent hydraulic support mechanism 6 and an intelligent pneumatic support mechanism 20. The intelligent pneumatic support mechanism 20 is located behind the intelligent hydraulic support mechanism 6, which is installed behind the unmanned tunneling machine 2.

[0033] The intelligent hydraulic support mechanism 6 is provided in a set. The set of intelligent hydraulic support mechanism 6 includes twenty hydraulic supports connected end to end. The twenty hydraulic supports have the same structure and are installed at equal intervals in the excavated coal roadway, that is, the rear side of the unmanned tunneling machine 2 to support the coal roadway. The hydraulic support located at the rear can push the hydraulic support located in front to move forward.

[0034] Several sets of intelligent pneumatic support mechanisms 20 are set up, the specific number of which depends on the length of the coal roadway. Each intelligent pneumatic support mechanism 20 includes ten pneumatic supports connected end to end, and the ten pneumatic supports have the same structure.

[0035] As the coal roadway continues to be excavated, more intelligent pneumatic support mechanisms 20 will be added behind the intelligent hydraulic support mechanism 6 to ensure that the intelligent hydraulic support mechanism 6 and several intelligent pneumatic support mechanisms 20 can support the excavated roadway.

[0036] When the unmanned tunneling machine 2 needs to add intelligent pneumatic support mechanisms 20 to advance its mining operations, all intelligent pneumatic support mechanisms 20 start to move simultaneously. The intelligent pneumatic support mechanism 20 at the rear can push the intelligent pneumatic support mechanism 20 in front of it to move. At the same time, the intelligent pneumatic support mechanism 20 in front pushes the intelligent pneumatic support mechanism 6 in front of it, and so on. All intelligent pneumatic support mechanisms 20 move forward at the same time, while the intelligent pneumatic support mechanism 20 at the front pushes the intelligent hydraulic support mechanism 6 to move, so that it can follow the unmanned tunneling machine 2.

[0037] It should be noted that the difference between pneumatic and hydraulic supports lies in hydraulic actuation and pneumatic actuation. Both hydraulic and pneumatic supports are 1.5m to 3m wide.

[0038] The support air-floating transport machine 608 in a set of intelligent hydraulic support mechanisms 6 is about 15m-30m wide and has the same length as the intelligent hydraulic support mechanism 6; similarly, the support air-floating transport machine 608 in a set of intelligent pneumatic support mechanisms 20 also has the same length as the intelligent pneumatic support mechanism 20, so as to ensure that when the front and rear intelligent pneumatic support mechanisms 20, or the intelligent hydraulic support mechanism 6 and the intelligent pneumatic support mechanism 20 are spliced, two adjacent support air-floating transport machines 608 can also be aligned and spliced.

[0039] Taking hydraulic supports as an example:

[0040] Reference Figure 2 and Figure 3The hydraulic support includes an upper guard plate 601, a side guard plate 602, a lower guard plate 603, vertical hydraulic support columns 604 (vertical pneumatic support columns are used for pneumatic supports), horizontal hydraulic support columns 605 (horizontal pneumatic support columns are used for pneumatic supports), a frame 606, and hydraulic push rods 607 (pneumatic support columns are used for pneumatic push rods). The frame 606 is located in the middle. The top two sides of the frame 606 are connected to the arc-shaped upper guard plate 601 through the vertical hydraulic support columns 604, and the bottom two sides of the frame 606 are connected to the arc-shaped lower guard plate 603 through the vertical hydraulic support columns 604. Both sides of the frame 606 are connected to the side guard plate 602 through the horizontal hydraulic support columns 605. The vertical hydraulic support columns 604 and the horizontal hydraulic support columns 605 are driven by hydraulic cylinders, while the pneumatic support is driven by pneumatic cylinders.

[0041] Hydraulic push rods 607 are installed at the four corners inside the frame 606. The hydraulic push rod 607 on the rear hydraulic support can push the front hydraulic support, causing the front hydraulic support to move forward in a partially retracted state to support the newly excavated coal roadway by the unmanned roadway machine 2. The retracted state is as follows: Figure 3 As shown, at this time, the upper guard plate 601, the side guard plate 602 and the lower guard plate 603 are also supported by the frame 606, the vertical hydraulic support column 604 and the horizontal hydraulic support column 605.

[0042] At the bottom of the frame 606, an air flotation conveyor 608 is installed. Since the front and rear hydraulic supports are connected, and the width of the air flotation conveyor 608 is the same as the width of the hydraulic supports, the air flotation conveyors 608 on the front and rear hydraulic supports can contact and splice with each other. The air flotation conveyor 608 in the front hydraulic support can contact and splice with the scraper loader on the unmanned roadway 2, and the air flotation conveyor 608 in the rear pneumatic support can contact and splice with the air flotation conveyor in the coal roadway. Therefore, at this time, the scraper loader, several air flotation conveyors 608 and the air flotation conveyor are connected to form a channel for transporting coal slag. Under the action of the compressed air circulation system, the coal slag is drawn from the air flotation conveyor 608 into the air flotation conveyor and then sucked into the coal bunker.

[0043] The hydraulic support moves forward, backward, left, and right by retracting the hydraulic push rod 607, and works in conjunction with the unmanned roadheader 2 for coal mining. The hydraulic support retracts via the horizontal hydraulic support column 605 and the rear vertical hydraulic support column 604. One end of the hydraulic push rod 607 is movably connected to the frame 606, and the other end is also movably connected to the frame 606 of the next hydraulic support. By using four hydraulic push rods 607 (each with a different stroke), the hydraulic support can move forward, backward, left, right, and up and down.

[0044] Reference Figure 4 and Figure 5The hydraulic support also includes support edges 609 on both sides of the upper guard plate 601. The support edges 609 are connected to both sides of the upper guard plate 601 by edge support columns 610. The support edges 609 can swing to provide a certain degree of protection for equipment inside the coal seam. Guard plate grooves 611 are provided on the support edges 609 and the upper guard plate 601. When the hydraulic support retracts, the support edges 609 of adjacent hydraulic supports also retract synchronously. When the hydraulic support moves forward, the support edges 609 will overlap. The hydraulic support also has hooks for cables, wire ropes, grouting pipes, and drainage pipes to pass through.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A support device for unmanned deep mining of high-gas outburst coal seams, characterized in that, The device is provided in several groups connected end to end. Each group of support devices includes several support components and a frame (606) located inside the support components. The frame (606) is connected to the support components through a drive support assembly and can drive the support components to retract. A drive push rod is provided on the frame (606), with one end of the drive push rod movably connected to the frame (606) and the other end connected to the frame (606) in the previous support device.

2. The support device for deep, unmanned mining of high-gas outburst coal seams according to claim 1, characterized in that: The drive push rod is either a hydraulic push rod (607) or a pneumatic push rod.

3. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 1, characterized in that: The drive push rod is a pneumatic push rod.

4. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 2, characterized in that: The support components include an upper guard plate (601), a lower guard plate (603), and two side guard plates (602), wherein the upper guard plate (601), the lower guard plate (603), and the two side guard plates (602) can be spliced ​​into a cylindrical structure when unfolded.

5. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 4, characterized in that: The upper guard plate (601), the lower guard plate (603) and the two side guard plates (602) are all arc-shaped plate structures. The upper guard plate (601) and the lower guard plate (603) are symmetrically arranged, and the two side guard plates (602) are symmetrically arranged.

6. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 5, characterized in that: The drive support assembly includes a vertical hydraulic support column (604) and a horizontal hydraulic support column (605), wherein the top and bottom of the frame (606) are connected to the upper guard plate (601) and the lower guard plate (603) respectively via the vertical hydraulic support column (604); the left and right sides of the frame (606) are connected to two side guard plates (602) respectively via the horizontal hydraulic support column (605).

7. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 2, characterized in that: Four sets of hydraulic push rods (607) are installed at the four corners inside the frame (606).

8. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 1, characterized in that: The top front and rear sides of the upper guard plate (601) are respectively connected to the support frame extension (609) by the extension support column (610).

9. A support device for deep, unmanned mining of high-gas outburst coal seams according to claim 8, characterized in that: Grooves (611) are provided on both the upper guard plate (601) and the support extension (609).

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