Supporting and protecting device for underground air duct
By designing a support protection device for downhole air ducts, including sleeves, mesh and support components, the problem of air ducts being vulnerable to damage during blasting operations is solved, and higher fixation reliability and maintenance efficiency are achieved.
Patent Information
- Application Number
- CN202421815994.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During blasting operations, downhole wind drums are susceptible to damage from roof gravel and blasting shock waves, resulting in damage to the wind drums or need to be re-fixed, which increases costs and time.
A support protection device including a sleeve, a mesh and a support assembly is designed. The sleeve is coaxially mounted with the air cylinder, the mesh is installed at the air outlet of the sleeve, and the support assembly includes a long and short cross brace for fixing the sleeve and preventing it from deforming.
The device can effectively prevent the air duct from being damaged by blasting shock waves and roof gravel, and is securely fixed, reducing the need for manual processing and maintenance, and reducing costs and time expenses.
Smart Images
Figure CN222810839U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of mining operation, and relates to a supporting and protecting device for an underground air duct. Background Art
[0002] The wind duct is a very important air intake device in the mine. The wind duct is generally arranged at the wall of the through-vein air inlet and then extended to the vicinity of the working surface. The wind duct is generally 1.5m above the ground. When the wind duct is extended to the vicinity of the working surface, the front wind duct may be damaged due to the collapse of part of the floating stone on the top of the working surface during blasting, causing tearing damage to the wind duct. The blasting shock wave will cause the wind duct to collapse and be damaged. The collapsed wind duct needs to be manually processed and re-fixed. If the tear is too large, a new wind duct needs to be re-laid, which increases costs and time.
[0003] In response to the above problems, the common method is to fix the wind tube to the side of the wall with expansion screws when the wind tube is extended to the working surface to prevent the wind tube from collapsing; however, when the wind speed in the wind tube is uneven, the wind tube is subjected to force on one side, which can easily lead to the breakage of the expansion screw connection. The blasting shock wave is too large to ensure the fixing capacity of the wind tube, and manual processing is required, which is time-consuming and laborious. For example, when the wind tube extends to the excavation surface, some shielding objects, such as wooden boards, are placed on the upper part of the wind tube to prevent gravel from falling, but the effect is poor. Utility Model Content
[0004] The present application provides a supporting and protecting device for an underground wind duct, which has a simple structure, is easy to install and has low cost.
[0005] In order to achieve the above technical purpose, a supporting and protecting device for an underground wind tube includes a sleeve, a mesh and a supporting assembly;
[0006] The sleeve is coaxially installed with the wind tube and is located at the periphery of the air outlet of the wind tube;
[0007] The diameter of the mesh is smaller than the inner diameter of the sleeve, and the mesh is installed at the air outlet of the sleeve;
[0008] The support assembly includes two long cross braces and two short cross braces; definition: the long cross brace is a cross brace that is longer than the short cross brace, and the length of the long cross brace is longer than the outer diameter of the sleeve; the short cross brace is a cross brace that is shorter than the long cross brace, and the length of the short cross brace is equal to the outer diameter of the sleeve;
[0009] One side of the long horizontal brace is fixed to the outer surface of the sleeve, and the other side extends to the side wall where the wind tube is located; the middle position of the short horizontal brace is fixed to the outer surface of the sleeve; at the same time, the two long horizontal braces and the two short horizontal braces are located on the same cross section of the sleeve; and the two short horizontal braces are parallel to each other, and the spacing between the two short horizontal braces is equal to the outer diameter of the sleeve; the two long horizontal braces are parallel to each other, and the spacing between the two short long braces is equal to the outer diameter of the sleeve; the two short horizontal braces and the two long horizontal braces are fixed perpendicularly to each other;
[0010] There are two groups of support components, one group is located at the air outlet side of the sleeve, and the other group is located at the air inlet side of the sleeve.
[0011] As an improved technical solution of the present application, the mesh has a grid spacing of 30 mm and is composed of steel bars.
[0012] As an improved technical solution of the present application, the long cross brace is a steel bar with a diameter of 16 mm; the short cross brace is a steel bar with a diameter of 16 mm.
[0013] As an improved technical solution of the present application, the thickness of the sleeve is not less than 5 mm.
[0014] As an improved technical solution of the present application, the inner diameter of the sleeve is the same as the outer diameter of the wind tube.
[0015] As an improved technical solution of the present application, among the two groups of support components, one group of support components is located on the air inlet side of the sleeve and has a distance of 50 mm from this side; the other group of support components is located on the air outlet side of the sleeve and has a distance of 50 mm from this side.
[0016] Beneficial Effects
[0017] The protective device of the present application adopts a long cross brace to support the sleeve and a short cross brace to fix the sleeve, so that the sleeve can protect the top plate debris from falling caused by the blasting shock wave and avoid the wind tube from being affected.
[0018] The protective device of the present application is firmly fixed, and can prevent the wind tube from falling due to the blasting shock wave. At the same time, the safety protective device of the present application can be repeatedly disassembled and used for a long time, which saves costs for the mine. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A schematic diagram showing the structure of the protective device of the present application when in use;
[0020] Figure 2 Draw Figure 1 Schematic diagram of the end face structure;
[0021] In the figure, 1. long horizontal brace; 2. sleeve; 3. air duct; 4. short horizontal brace; 5. mesh. DETAILED DESCRIPTION
[0022] Definition: Long and short are relative concepts. A long cross brace is a cross brace that is longer than a short cross brace, and its length is greater than the diameter of the sleeve; a short cross brace is a cross brace that is shorter than the long cross brace, and its length matches the outer diameter of the sleeve.
[0023] like Figure 1 and Figure 2 As shown, a supporting and protective device for underground wind tubes is provided. The device is provided with a steel pipe sleeve to protect the wind tube and prevent the wind tube from being damaged by gravel or crushed by blasting shock waves on the working surface. Long steel bar cross braces are added to support and fix the sleeve device; short steel bar cross braces are used to prevent the sleeve from deforming. The sleeve and wind tube device need to be fixed to the side of the wall with steel bar cross braces.
[0024] like Figure 1 and Figure 2 As shown, a supporting and protecting device for an underground wind duct comprises a sleeve 2, a mesh 5 and a supporting assembly.
[0025] The sleeve 2 is coaxially installed with the wind tube 3 and is located outside the wind tube 3. The sleeve 2 is made of steel pipe, and is circular, 1m long, 610mm in outer diameter, and 5mm thick. The outer diameter of the wind tube 3 is 600mm, and the diameter of the wind tube 3 is smaller than that of the sleeve 2. The wind tube 3 is placed inside the sleeve 2. The wind tube 3 is made of plastic bag material and is normally 600mm in diameter.
[0026] The diameter of the mesh 5 is equal to the diameter of the sleeve 2, and the mesh 5 is welded and installed at the air outlet of the sleeve 2; the mesh 5 has a grid spacing of 30 mm, which is convenient for air outlet and prevents gravel from entering the air duct 3. The mesh 5 is welded with steel bars. In some embodiments, the diameter of the steel bars forming the mesh 5 is 6.5 mm. The mesh 5 is made of steel bars with a diameter of 6.5 mm, which are alternately formed at a grid spacing of 30 mm, and the steel mesh is welded at the air outlet of the sleeve 2 according to the diameter of the sleeve 2.
[0027] The support assembly includes two long cross braces 1 and two short cross braces 4; definition: the long cross brace 1 is a cross brace that is longer than the short cross brace 4, and the length of the long cross brace 1 is longer than the outer diameter of the sleeve 2; the short cross brace 4 is a cross brace that is shorter than the long cross brace 1, and the length of the short cross brace 4 is equal to the outer diameter of the sleeve 2.
[0028] One side of the long horizontal brace 1 is fixed to the outer surface of the sleeve 2, and the other side extends to the side wall where the wind tube 3 is located; the middle position of the short horizontal brace 4 is fixed to the outer surface of the sleeve 2; at the same time, the two long horizontal braces 1 and the two short horizontal braces 4 are located on the same cross section of the sleeve 2; and the two short horizontal braces 4 are parallel to each other, and the spacing between the two short horizontal braces 4 is equal to the outer diameter of the sleeve 2; the two long horizontal braces 1 are parallel to each other, and the spacing between the two long horizontal braces 1 is equal to the outer diameter of the sleeve 2; the two short horizontal braces 4 and the two long horizontal braces 1 are fixed vertically to each other. In some embodiments, the long horizontal brace 1 is a steel bar with a diameter of 16mm. The short horizontal brace 4 is a steel bar with a diameter of 16mm. In specific implementation, the two ends of a short horizontal brace 4 are respectively fixed to one end of the two long horizontal braces 1, and the end of the long horizontal brace 1 is an end adjacent to the sleeve 2; the two ends of the other short horizontal brace 4 are respectively fixed to the middle section of the two long horizontal braces 1; at the same time, the middle positions of the two short horizontal braces 4 are fixedly connected to the sleeve 2. Finally, the two short cross braces 4 and the two long cross braces 1 form a square structure, and a cross section of the sleeve 2 is fixed by the four sides of the square structure at the same time.
[0029] There are two groups of support components, one group is located at the air outlet side of the sleeve 2, and the other group is located at the air inlet side of the sleeve 2, in order to facilitate the balanced fixation of the sleeve 2. In some embodiments, one group of support components is located at one end of the sleeve 2, and is 50 mm away from the end; the other group of support components is located at the other end of the sleeve 2, and is 50 mm away from the end.
[0030] As an improved technical solution of the present application, the long cross brace 1 is a steel bar with a diameter of 16 mm; the short cross brace 4 is a steel bar with a diameter of 16 mm.
[0031] Example 1
[0032] like Figure 1 As shown, a supporting and protecting device for an underground wind duct comprises a sleeve 2, a mesh 5 and a supporting assembly.
[0033] The wind tube 3 is located inside the sleeve 2, wherein the sleeve 2 is circular, has a depth of 1m, an outer diameter of 610mm, and a thickness of 5mm. The diameter of the wind tube 3 is 600mm, which is smaller than the diameter of the sleeve 2 and is placed inside the sleeve 2. The sleeve 2 is made of a steel pipe, and the wind tube 3 is directly inserted into the sleeve 2.
[0034] Wherein, the support assembly includes two long cross braces 1 and two short cross braces 4. The long cross braces 1 and the short cross braces 4 are both round steel bars, and the diameter of the round steel bars is 16 mm. Wherein, the length of the long cross brace 1 is 1250 mm, and the length of the short cross brace 4 is 620 mm. There are two long cross braces 1 and two short cross braces 4, wherein the two ends of one short cross brace 4 are respectively welded and fixed to one end of the two long cross braces 1, and the two ends of the other short cross brace 4 are respectively welded and fixed to the middle section of the two long cross braces 1, that is, to ensure that the two short cross braces 4 and the two long cross braces 1 can form a square structure. Therefore, from the perspective of a cross section of the sleeve 2, the two short cross braces 4 are parallel to each other, the two long cross braces 1 are parallel to each other, and the two short cross braces 4 are perpendicular to the two long cross braces 1. The other end of the long steel bar is fixed in the constructed anchor eye, and the length of the long steel bar fixed in the constructed anchor eye is 500 mm.
[0035] Among them, a cross section (circular) of the sleeve 2 is supported by the square structure, that is, four points of the circumference of the cross section of the sleeve 2 are fixed at the middle positions of the four sides of the square structure.
[0036] The diameter of the mesh 5 is equal to the diameter of the sleeve 2, and is welded and fixed to one end of the air outlet of the sleeve 2. The mesh 5 is made of steel bars with a diameter of 6.5 mm and an alternating grid spacing of 30 mm.
[0037] In practical application, there are two groups of support components, one group of support components is located on the air inlet side of the sleeve 2 and is 50 mm away from the end; the other group of support components is located on the air outlet side of the sleeve 2 and is 50 mm away from the end.
Claims
1. A supporting and protecting device for an underground wind tube, characterized in that: It includes a sleeve, a mesh and a supporting assembly; The sleeve is coaxially installed with the wind tube and is located at the periphery of the air outlet of the wind tube; The diameter of the mesh is equal to the diameter of the sleeve, and the mesh is installed at the air outlet of the sleeve; The support assembly includes two long cross braces and two short cross braces; Definition: A long cross brace is a cross brace that is longer than a short cross brace, and the length of the long cross brace is longer than the outer diameter of the sleeve; a short cross brace is a cross brace that is shorter than the long cross brace, and the length of the short cross brace is equal to the outer diameter of the sleeve; One side of the long cross brace is fixed to the outer surface of the sleeve, and the other side extends to the side wall where the wind tube is located; the middle position of the short cross brace is fixed to the outer surface of the sleeve; at the same time, the two long cross braces and the two short cross braces are located on the same cross section of the sleeve; and the two short cross braces are parallel to each other, and the spacing between the two short cross braces is equal to the outer diameter of the sleeve; the two long cross braces are parallel to each other, and the spacing between the two short long cross braces is equal to the outer diameter of the sleeve; the two short cross braces and the two long cross braces are fixed perpendicularly to each other; There are two groups of support components, one group is located at the air outlet side of the sleeve, and the other group is located at the air inlet side of the sleeve.
2. A supporting and protecting device for an underground wind tube according to claim 1, characterized in that: The mesh has a grid spacing of 30 mm and is made of steel bars.
3. A supporting and protecting device for underground wind tube according to claim 1, characterized in that: The long cross brace is a steel bar with a diameter of 16 mm; the short cross brace is a steel bar with a diameter of 16 mm.
4. A supporting and protecting device for an underground wind tube according to claim 1, characterized in that: The thickness of the sleeve is not less than 5 mm.
5. A supporting and protecting device for underground wind tube according to claim 1, characterized in that: The inner diameter of the sleeve is the same as the outer diameter of the wind cylinder.
6. A supporting and protecting device for underground wind tube according to claim 1, characterized in that: Among the two groups of support components, one group of support components is located on the air inlet side of the sleeve and is 50 mm away from this side; the other group of support components is located on the air outlet side of the sleeve and is 50 mm away from this side.