A ventilation duct support for underground mine roadways

Abstract

This utility model discloses a ventilation duct support for underground mine roadways, relating to the technical field of mineral extraction. It includes an arc-shaped support, threaded rods, and a transverse truss. The transverse truss is positioned directly above the arc-shaped support. An adjustment mechanism is located on the outer side of the transverse truss, allowing for height adjustment of the transverse truss and the corresponding ventilation duct according to usage requirements. A positioning mechanism is also located on the outer side of the arc-shaped support, positioning the outer side of the ventilation duct. The ventilation duct and arc-shaped support can be separated and assembled according to usage requirements. Threaded rods are symmetrically arranged at the top of the transverse truss. During use, by first rotating the handle, the threaded rods and arc-shaped support are moved vertically downwards, allowing for flexible height adjustment of the arc-shaped support according to the installation or maintenance needs of the ventilation duct.

Description

Technical Field

[0001] This utility model relates to the technical field of mineral mining, specifically to a ventilation duct support for underground mine roadways. Background Technology

[0002] Ventilation ducts in underground mine roadways are key equipment for ensuring air circulation and reducing the concentration of harmful gases in the mine. Positive pressure ducts are responsible for delivering fresh air to the working face, while negative pressure ducts extract toxic and harmful gases.

[0003] Traditional welding / bolt fixing methods result in the fixed position of the ventilation duct, which cannot meet the following needs: temporary reduction of the ventilation duct during equipment maintenance (such as replacing a local fan) or rematching of the ventilation section after deformation of the mine roadway. This requires a large amount of manual labor for repairs and will also affect the mining operations below. Summary of the Invention

[0004] The purpose of this utility model is to provide a ventilation duct support for underground mine roadways to solve the above-mentioned defects caused by the prior art.

[0005] A ventilation duct support for an underground mine roadway includes an arc-shaped support, a threaded rod, and a transverse truss. The transverse truss is positioned directly above the arc-shaped support. An adjustment mechanism is provided on the outer side of the transverse truss. The adjustment mechanism adjusts the height of the transverse truss and the corresponding ventilation duct according to usage requirements, facilitating the adjustment and control of the ventilation duct height. A positioning mechanism is provided on the outer side of the arc-shaped support to position the outer side of the ventilation duct. The ventilation duct and the arc-shaped support can be separated and assembled according to usage requirements.

[0006] As a further limitation of this utility model, the positioning mechanism includes inserts, rubber pads, arc-shaped support pieces, fastening holes, and inner slots. The rubber pads are fitted to the outer side of the arc-shaped support pieces. Inserts are welded to both sides of the arc-shaped support pieces. The outer side of the inserts is connected to an inner slot. The inner slots are symmetrically opened on both sides of the arc-shaped support. Fastening holes are opened through both sides of the arc-shaped support. The arc-shaped support pieces are positioned directly below the arc-shaped support.

[0007] As a further limitation of this utility model, the arc-shaped support plate is connected to the inner slot through inserts on both sides, and fastening holes are provided on the outer sides of both the inserts and the arc-shaped support.

[0008] As a further limitation of this utility model, the adjustment mechanism includes an inner threaded tube, a threaded rod, a transverse truss, a handle, an outer sleeve, a vertical guide rod, and fasteners. The inner end of the inner threaded tube is connected to the threaded rod, the outer side of the threaded rod is connected to the transverse truss, and the top of the transverse truss is symmetrically provided with an outer sleeve.

[0009] As a further limitation of this utility model, the inner end of the outer sleeve is connected to a vertical guide rod, the top end of the vertical guide rod is connected to the bottom end of the transverse truss, a fastener is connected through the outer side of the outer sleeve, and the tail end of the fastener is connected to the vertical guide rod.

[0010] As a further limitation of this utility model, threaded hangers are symmetrically arranged at the top of the transverse truss.

[0011] As a further limitation of this utility model, the transverse truss is connected to the outside of the inner sleeve through a threaded rod provided through the top end, and the transverse truss is connected to the top end of the mine tunnel through a threaded hanger provided at the top end.

[0012] As a further limitation of this utility model, the threaded rod is connected to the top bearing of the arc-shaped bracket through an inner threaded sleeve connected to the outside.

[0013] As a further limitation of this utility model, a handle is provided at the top end of the threaded rod.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. During use, first rotate the handle to move the threaded rod and arc-shaped bracket vertically downwards. Then, adjust the height of the arc-shaped bracket flexibly according to the installation or maintenance needs of the ventilation duct. At the same time, use the vertical guide rod and outer sleeve to guide the horizontal truss vertically. Then, use fasteners to position the vertical guide rod and outer sleeve laterally. After adjusting the height of the arc-shaped bracket, tighten the outer sleeve and vertical guide rod to prevent the ventilation duct on the arc-shaped bracket from shaking during operation.

[0016] 2. The disassembly requirements of the arc-shaped bracket and arc-shaped support plate, combined with the positioning flexibility requirements for adjusting the diameter of the ventilation duct, and the rubber pads on the outer side of the arc-shaped support plate to support the bottom of the ventilation duct, or the rubber pads of the appropriate size or size to be selected according to the diameter of the ventilation duct to support the ventilation duct, thereby preventing air leakage. The split structure and mechanical quick-release design can greatly improve the adaptability of the ventilation duct bracket. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall installation structure of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a top view of the arc-shaped bracket in this utility model.

[0020] Figure 4This is a side view of the positioning mechanism in this utility model.

[0021] Figure 5 This is a schematic diagram of the positioning mechanism in this utility model.

[0022] in:

[0023] 1. Arc-shaped bracket; 2. Insert plate; 3. Rubber pad; 4. Arc-shaped support plate; 5. Positioning mechanism; 6. Internal threaded sleeve; 7. Threaded rod; 8. Horizontal truss; 9. Handle; 10. Adjustment mechanism; 11. Outer sleeve; 12. Fastening hole; 13. Vertical guide rod; 14. Internal groove; 15. Fastener; 16. Threaded hanger. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 5 As shown, the ventilation duct support for underground mine roadways of this utility model includes an arc-shaped support 1, a threaded rod 7, and a transverse truss 8. The transverse truss 8 is arranged directly above the arc-shaped support 1. An adjustment mechanism 10 is arranged on the outside of the transverse truss 8. The adjustment mechanism 10 adjusts the height of the transverse truss 8 and the corresponding ventilation duct according to the usage requirements, so as to facilitate the adjustment and control of the height of the ventilation duct. A positioning mechanism 5 is arranged on the outside of the arc-shaped support 1. The positioning mechanism 5 positions the outside of the ventilation duct. The ventilation duct and the arc-shaped support 1 can be separated and assembled according to the usage requirements. Threaded hangers 16 are symmetrically arranged at the top of the transverse truss 8.

[0026] In some embodiments, the positioning mechanism 5 includes an insert 2, a rubber pad 3, an arc-shaped support 4, a fastening hole 12, and an inner groove 14. The rubber pad 3 is fitted to the outer side of the arc-shaped support 4. Inserts 2 are welded to both sides of the arc-shaped support 4. The outer side of the inserts 2 is connected to the inner groove 14. The inner groove 14 is symmetrically opened on both sides of the arc-shaped bracket 1. Fastening holes 12 are opened through both sides of the arc-shaped bracket 1. The arc-shaped support 4 is located directly below the arc-shaped bracket 1. The arc-shaped support 4 is used to open the bottom end of the arc-shaped bracket 1, thereby facilitating the lifting and maintenance of the bottom motor part of the ventilation duct.

[0027] In some specific embodiments, the arc-shaped support plate 4 is connected to the inner slot 14 through the insert plates 2 on both sides. The insert plates 2 and the outer side of the arc-shaped bracket 1 are provided with fastening holes 12. The bottom end of the ventilation duct is supported by the arc-shaped support plate 4, which makes it easy to inspect or replace some parts without disassembling.

[0028] In some embodiments, the adjustment mechanism 10 includes an inner threaded tube 6, a threaded rod 7, a transverse truss 8, a handle 9, an outer sleeve 11, a vertical guide rod 13, and a fastener 15. The inner end of the inner threaded tube 6 is connected to the threaded rod 7, the outer side of the threaded rod 7 is connected to the transverse truss 8, the top end of the threaded rod 7 is provided with a handle 9, the top end of the transverse truss 8 is symmetrically provided with an outer sleeve 11, and the inner end of the outer sleeve 11 is connected to the vertical guide rod 13.

[0029] It should be noted that the top of the vertical guide rod 13 is connected to the bottom of the horizontal truss 8, and the outer side of the outer sleeve 11 is connected to the fastener 15. The tail end of the fastener 15 is connected to the vertical guide rod 13. The arc-shaped bracket 1 is vertically raised using the inner threaded sleeve 6 and the threaded rod 7 to adjust and maintain the height of the arc-shaped bracket 1.

[0030] In this embodiment, the transverse truss 8 is connected to the outside of the inner sleeve 6 through a threaded rod 7 that passes through the top end, and the transverse truss 8 is connected to the top end of the mine tunnel through a threaded hanger 16 that is provided at the top end.

[0031] It should be noted that the threaded rod 7 is connected to the top bearing of the arc-shaped bracket 1 through the inner threaded sleeve 6 connected to the outside. The inner threaded sleeve 6 and the threaded rod 7 cooperate to adjust the height of the arc-shaped bracket 1, and to adjust and maintain the height of the ventilation duct.

[0032] In practical applications, this type of ventilation duct support for underground mine roadways is used through the following steps:

[0033] Step 1: The operator first drills a hole at the top of the mine roadway using an electric drill. Then, the threaded part at the top of the threaded rod 16 is used with an expansion tube to position the threaded rod 16. The bottom end of the threaded rod 16 is then installed at the top of the transverse truss 8 to complete the positioning of the transverse truss 8. The threaded rod 7 on the outside of the transverse truss 8 is then connected to the inner threaded sleeve 6, and the bottom end of the inner threaded sleeve 6 is connected to the top of the arc-shaped bracket 1 with a bearing.

[0034] Step 2: The operator holds the handle 9 and uses the handle 9 to rotate the threaded rod 7, causing the threaded rod 7 and the inner threaded sleeve 6 to rotate, so that the inner threaded sleeve 6 pushes the arc-shaped bracket 1 vertically downward. At the same time, the outer sleeve 11 set at the top of the arc-shaped bracket 1 and the vertical guide rod 13 are used for vertical guidance to prevent the arc-shaped bracket 1 from shaking during the lifting and lowering process. After the height of the arc-shaped bracket 1 is adjusted, the outer sleeve 11 and the vertical guide rod 13 are fastened through the fastener 15 to prevent the arc-shaped bracket 1 from loosening during installation.

[0035] Step 3: An anti-loosening nut is added inside the internal threaded sleeve 6. The gap between the screw pairs caused by vibration is offset by secondary tightening. Then, the inserts 2 on both sides of the arc-shaped support plate 4 are separated from the inner slot 14. Then, the ventilation duct is inserted into the inside of the arc-shaped bracket 1. The arc-shaped bracket 1 is connected by screws and flat iron pieces. A rubber pad 3 of appropriate width is fixed to the top of the arc-shaped support plate 4. The inserts 2 on both sides of the arc-shaped support plate 4 are connected to the inner slot 14.

[0036] Step 4: Insert the screw into the fastening hole 12 to position the insert 2 and the arc bracket 1. Use the rubber pad 3 to flexibly support the bottom of the ventilation duct. Then loosen the fastener 15 and rotate the handle 9 in the opposite direction. Use the handle 9 to drive the threaded rod 7 to rotate in the opposite direction. When the threaded rod 7 rotates, it engages with the threaded pair of the internal thread sleeve 6 to convert the rotational motion into linear lifting motion, thereby driving the arc bracket 1 and the ventilation duct to move vertically upward, so that the ventilation duct and the pipe are connected.

[0037] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A mine ventilation shaft support for a mine roadway, characterised in that: The system includes an arc-shaped support (1), a threaded rod (7), and a transverse truss (8). The transverse truss (8) is located directly above the arc-shaped support (1). An adjustment mechanism (10) is located on the outside of the transverse truss (8). The adjustment mechanism (10) adjusts the height of the transverse truss (8) and the corresponding ventilation duct according to the usage requirements, so as to facilitate the adjustment and control of the height of the ventilation duct. A positioning mechanism (5) is located on the outside of the arc-shaped support (1). The positioning mechanism (5) positions the outside of the ventilation duct and separates and assembles the ventilation duct and the arc-shaped support (1) according to the usage requirements.

2. A mine roadway ventilation shaft support according to claim 1, characterised in that: The positioning mechanism (5) includes a insert (2), a rubber pad (3), an arc-shaped support (4), a fastening hole (12), and an inner slot (14). The rubber pad (3) is fitted to the outside of the arc-shaped support (4). Inserts (2) are welded to both sides of the arc-shaped support (4). The outer side of the inserts (2) is connected to the inner slot (14). The inner slot (14) is symmetrically opened on both sides of the arc-shaped bracket (1). Fastening holes (12) are opened through both sides of the arc-shaped bracket (1). The arc-shaped support (4) is located directly below the arc-shaped bracket (1).

3. The ventilation duct support for underground mine roadways according to claim 2, characterized in that: The arc-shaped support plate (4) is connected to the inner slot (14) through the inserts (2) on both sides. Fastening holes (12) are provided on the outer sides of both the inserts (2) and the arc-shaped bracket (1).

4. The ventilation duct support for underground mine roadways according to claim 1, characterized in that: The adjustment mechanism (10) includes an inner threaded tube (6), a threaded rod (7), a transverse truss (8), a handle (9), an outer tube (11), a vertical guide rod (13), and a fastener (15). The inner end of the inner threaded tube (6) is connected to the threaded rod (7), and the outer side of the threaded rod (7) is connected to the transverse truss (8). The top of the transverse truss (8) is symmetrically provided with an outer tube (11).

5. The ventilation duct support for underground mine roadways according to claim 4, characterized in that: The inner end of the outer tube (11) is connected to a vertical guide rod (13), the top end of the vertical guide rod (13) is connected to the bottom end of the transverse truss (8), the outer side of the outer tube (11) is connected to a fastener (15), and the tail end of the fastener (15) is connected to the vertical guide rod (13).

6. The ventilation duct support for underground mine roadways according to claim 5, characterized in that: The top of the transverse truss (8) is symmetrically provided with threaded hangers (16).

7. The ventilation duct support for underground mine roadways according to claim 6, characterized in that: The transverse truss (8) is connected to the outside of the inner sleeve (6) through a threaded rod (7) that passes through the top end, and the transverse truss (8) is connected to the top end of the mine tunnel through a threaded hanger (16) that passes through the top end.

8. The ventilation duct support for underground mine roadways according to claim 7, characterized in that: The threaded rod (7) is connected to the top bearing of the arc-shaped bracket (1) through the inner threaded sleeve (6) connected to the outside.

9. The ventilation duct support for underground mine roadways according to claim 7, characterized in that: The threaded rod (7) is provided with a handle (9) at its top end.

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