Mining inclined drift folding air door

Abstract

The utility model discloses a mining inclined drift folding air door which comprises an air door structure, the air door structure comprises an upper door plate and a lower door plate which are in clearance sealing fit, and the upper door plate and the lower door plate are used for being sequentially arranged in an inclined drift from top to bottom and blocking the inclined drift. The upper door plate is provided with an upper rotating shaft, the upper door plate rotates forwards and backwards to drive the upper rotating shaft to rotate clockwise and anticlockwise, the lower door plate is provided with a lower rotating shaft perpendicular to the upper rotating shaft, and the upper rotating shaft and the lower rotating shaft are sleeved with a driving gear and a driven gear respectively, according to the mining inclined drift folding air door, the inclined drift sealing effect is enhanced, the maintenance cost is reduced, and the operation stability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of mine roadway air doors, and more specifically, to a folding air door for inclined mine roadways. Background Art

[0002] The mine roadway air door is a special type of door in the mine that cuts off the air current or adjusts the air volume in the roadway where vehicles need to pass and pedestrians need to walk, and is used to ensure the safe production of the mine.

[0003] Currently, due to the trend of the roadway, a flexible bottom skirt with an inclined design is provided at the lower part of the upper door panel 1 of the air door for inclined mine roadways as the lower door panel 2 to block the inclined roadway, so as to ensure that the leakage of the roadway is reduced as much as possible, as Figure 1 shown. However, this air door for inclined mine roadways has the following disadvantages: First, since the inclined roadway is an inclined roadway, the flexible lower door panel 2 is easily deformed by the terrain during the opening and closing process of the air door, resulting in poor sealing effect of the inclined roadway and air leakage in the inclined roadway; Second, the flexible lower door panel 2 is easily worn, with poor service life, resulting in high maintenance costs; Third, the flexible lower door panel 2 has poor structural strength, resulting in poor overall operation stability of the air door.

[0004] In summary, how to solve the problems of poor sealing effect, high maintenance cost and poor operation stability of the current air door for inclined mine roadways is an urgent problem to be solved by those skilled in the art at present. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a folding air door for inclined mine roadways, which enhances the sealing effect of the inclined roadway, reduces the maintenance cost and enhances the operation stability.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] Preferably, it includes an air door structure, and the air door structure includes an upper door panel and a lower door panel that are hermetically sealed and matched, and the two are used to be sequentially placed in the inclined roadway from top to bottom to block the inclined roadway; the upper door panel is provided with an upper rotating shaft, and the front and rear rotations of the upper door panel can respectively drive the upper rotating shaft to rotate clockwise and counterclockwise, the lower door panel is provided with a lower rotating shaft perpendicular to the upper rotating shaft, and the upper rotating shaft and the lower rotating shaft are respectively sleeved with a driving gear and a driven gear that are meshed and connected.

[0008] Preferably, the upper door panel, the lower door panel and the lower rotating shaft are parallel to each other.

[0009] Preferably, the upper rotating shaft is arranged on the fixed side of the upper door panel, the lower rotating shaft is arranged at the fixed end of the lower door panel adjacent to the upper door panel, and a containing space for placing the driving gear and the driven gear is left between the fixed side of the upper door panel and the fixed end of the lower door panel.

[0010] Preferably, a protective cover is provided on the outer periphery of the accommodation space.

[0011] Preferably, a sealing gasket is provided on either or both of the adjacent ends of the upper door panel and the lower door panel.

[0012] Preferably, a handle is provided on the movable side of the upper door panel away from the upper rotating shaft.

[0013] Preferably, the axis of the upper rotating shaft is parallel to the rotation axis of the upper door panel. The upper rotating shaft is connected to a driver, and the driver is electrically connected to a control system.

[0014] Preferably, a proximity switch is provided on the upper door panel. The proximity switch is inductively matched with the lower door panel. When the lower door panel rotates upward and is sensed by the proximity switch, the proximity switch sends a signal to the control system to control the lower door panel to stop rotating.

[0015] Preferably, the air door structure further includes a door frame for fixing on the roadway wall. The upper door panel and the lower door panel are sequentially arranged in the door frame from top to bottom, and the peripheries of both are in clearance sealing cooperation with the door frame.

[0016] Preferably, a plurality of the air door structures are provided, and the plurality of air door structures are arranged side by side to block the inclined roadway.

[0017] The folding air door for inclined roadway in mines provided by the present utility model is composed of an upper door panel and a lower door panel which are sequentially arranged along the vertical direction, and is used to block the inclined roadway. Among them, the upper door panel is provided with an upper rotating shaft, and a driving gear is sleeved thereon. The lower door panel is provided with a lower rotating shaft perpendicular to the upper rotating shaft, and a driven gear meshing with the driving gear is sleeved thereon. In this way, when the air door needs to be opened, the upper door panel is pulled backward to rotate. The upper door panel drives the upper rotating shaft and the driving gear thereon to rotate counterclockwise. The driving gear then drives the driven gear and the connected lower rotating shaft to rotate clockwise. The lower door panel is lifted upward through the lower rotating shaft, so that the lower door panel is away from the bottom wall of the inclined roadway, reducing the height of the air door to meet the minimum height requirement for opening the inclined roadway air door and ensuring that the air door can be normally opened. When the air door needs to be closed, on the contrary to the above, the upper door panel is pushed forward to rotate, and the lower door panel can be lowered back to the initial position, that is, the air door is restored to a complete door panel to block the inclined roadway.

[0018] In summary, during the opening process of the air door of the present application, the lower door panel gradually rises, allowing air to pass through the roadway. During the closing process, the lower door panel gradually falls back to its initial position, blocking the air flow. Therefore, during the opening and closing process of the air door, it is not restricted by the terrain, avoiding collision and wear between the lower door panel and the inclined roadway. On the one hand, it is beneficial to improve the sealing performance of the lower door panel to enhance the sealing effect of the inclined roadway and reduce air leakage in the inclined roadway. On the other hand, it is beneficial to extend the service life of the lower door panel and reduce the maintenance cost. In addition, compared with the flexible lower door panel described in the background art, the lower door panel of the present application adopts a pure mechanical structure with good structural strength, which can enhance the stability of the overall operation of the air door. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0020] Figure 1 is a structural schematic diagram of a conventional mine inclined roadway air door;

[0021] Figure 2 is a structural schematic diagram of a mine inclined roadway folding air door provided by the present invention;

[0022] Figure 3 is a structural schematic diagram of an air door structure provided by the present invention;

[0023] Figure 4 is a structural schematic diagram of another air door structure provided by the present invention;

[0024] Figure 5 is a schematic diagram of the lifting and lowering of the lower door panel in the air door structure provided by the present invention.

[0025] Att Figure 1 marks:

[0026] 1 - upper door panel; 2 - lower door panel.

[0027] Att Figures 2-5 marks:

[0028] 1 - upper door panel; 2 - lower door panel; 3 - door frame; 4 - upper rotating shaft; 5 - lower rotating shaft; 6 - driving gear; 7 - driven gear; 8 - accommodating space; 9 - handle; 10 - protective cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] The core of the present utility model is to provide a folding air door for inclined mine roadways, which enhances the sealing effect of the inclined roadway, reduces the maintenance cost, and enhances the operation stability.

[0031] It should be noted that in this embodiment, the orientation or positional relationship indicated by "up", "down", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0032] Please refer to Figures 2-4 , the present application provides a folding air door for inclined mine roadways, including an air door structure. The air door structure includes an upper door panel 1 and a lower door panel 2 that are detachably connected. The two are used to be sequentially placed in the inclined roadway from top to bottom and block the inclined roadway. The upper door panel 1 is provided with an upper rotating shaft 4. The front and rear rotation of the upper door panel 1 can drive the upper rotating shaft 4 to rotate clockwise and counterclockwise respectively. The lower door panel 2 is provided with a lower rotating shaft 5 perpendicular to the upper rotating shaft 4. The upper rotating shaft 4 and the lower rotating shaft 5 are respectively sleeved with a driving gear 6 and a driven gear 7 that are meshed and connected.

[0033] It should be noted that the air door structure further includes a door frame 3 for fixing on the roadway wall. The upper door panel 1 and the lower door panel 2 are sequentially placed in the door frame 3 from top to bottom. The peripheries of the upper door panel 1 and the lower door panel 2 are in clearance sealing fit with the door frame 3, and the adjacent ends of the upper door panel 1 and the lower door panel 2 are in clearance sealing fit to form a complete door panel to block the inclined roadway.

[0034] The side of the upper door panel 1 for fixing to the roadway wall is the fixed side. The fixed side of the upper door panel 1 is generally fixed on the movable leaf of the hinge structure. The fixed leaf of the hinge structure is fixed on the door frame 3, and the movable leaf and the fixed leaf are rotatably connected by a rotating shaft to realize the forward and backward rotation movement of the upper door panel 1 in the inclined roadway.

[0035] One end of the lower door panel 2 adjacent to the upper door panel 1 is the fixed end. The fixed end of the lower door panel 2 is generally fixed on the movable leaf of the hinge structure. The fixed leaf of the hinge structure is fixed on the door frame 3, and the movable leaf and the fixed leaf are rotatably connected by a rotating shaft to realize the up and down rotation movement of the lower door panel 2 in the inclined roadway.

[0036] The structures of the driving gear 6 and the driven gear 7 are not unique, and two meshing bevel gears can be used, such as Figure 3 shown, or two spur gears that mesh vertically and transmit power, such as Figure 4 shown.

[0037] Please refer to Figure 3 and Figure 5 . When the air door needs to be opened, pull the upper door panel 1 backward to rotate. The upper door panel 1 drives the upper rotating shaft 4 and the driving gear 6 thereon to rotate counterclockwise. The driving gear 6 then drives the driven gear 7 and the connected lower rotating shaft 5 to rotate clockwise. The lower door panel 2 is lifted upward through the lower rotating shaft 5, so that the lower door panel 2 moves away from the bottom wall of the inclined roadway, reducing the height of the air door to meet the minimum height requirement for opening the inclined roadway air door and ensuring that the air door can be opened normally. When the air door needs to be closed, on the contrary to the above process of opening, push the upper door panel 1 forward to rotate, and the lower door panel 2 can be lowered back to its initial position, that is, the air door is restored to a complete door panel to block the inclined roadway.

[0038] In summary, during the opening process of the air door of this application, the lower door panel 2 gradually rises, and the roadway is ventilated. During the closing process, the lower door panel 2 gradually falls back to its initial position to cut off the air flow. Therefore, during the opening and closing process of the air door, it is not restricted by the terrain, avoiding collision and wear between the lower door panel 2 and the inclined roadway. On the one hand, it is beneficial to improve the sealing performance of the lower door panel 2 to enhance the sealing effect of the inclined roadway and reduce air leakage in the inclined roadway. On the other hand, it is beneficial to increase the service life of the lower door panel 2 and reduce the maintenance cost. In addition, compared with the flexible lower door panel 2 described in the background art, the lower door panel 2 of this application adopts a pure mechanical structure with good structural strength, which can enhance the overall operation stability of the air door.

[0039] Preferably, the upper door panel 1, the lower door panel 2 and the lower rotating shaft 5 are parallel to each other. In this way, when the lower rotating shaft 5 drives the lower door panel 2 to lift or fall, it can ensure that the lower door panel 2 always remains parallel to the upper door panel 1, even if there is always a gap between the two, to avoid the upper door panel 1 interfering with the lifting or falling movement of the lower door panel 2.

[0040] Based on the above embodiments, please refer to Figure 3 . The upper rotating shaft 4 is arranged on the fixed side of the upper door panel 1, and the lower rotating shaft 5 is arranged at the fixed end of the lower door panel 2 adjacent to the upper door panel 1. There is an accommodation space 8 for placing the driving gear 6 and the driven gear 7 between the fixed side of the upper door panel 1 and the fixed end of the lower door panel 2.

[0041] Specifically, the lower rotating shaft 5 is arranged at the fixed end of the lower door panel 2, which can increase the lifting range of the lower door panel 2, that is, it can meet the smaller height requirement for opening the inclined roadway air door and be suitable for an inclined roadway with a greater slope. On this basis, the upper rotating shaft 4 is arranged on the fixed side of the upper door panel 1, and an accommodation space 8 can be opened at the side of the fixed end of the lower door panel 2 to facilitate the installation of the driving gear 6 and the driven gear 7 in the accommodation space 8.

[0042] Based on the above embodiments, please refer to Figure 2 , a protective cover 10 is provided on the outer periphery of the accommodation space 8 to prevent underground dust from contaminating the transmission gear and reducing its mechanical performance. Only a small amount of engine oil needs to be added daily. It should be noted that the protective cover 10 can be detachably placed between the fixed side of the upper door panel 1 and the fixed end of the lower door panel 2 to facilitate the disassembly and assembly of the protective cover 10, and thus facilitate the maintenance of the transmission gear.

[0043] Based on the above embodiments, a sealing gasket is provided on either or both of the adjacent ends of the upper door panel 1 and the lower door panel 2 to improve the sealing performance of the air door when it is closed, and further reduce the risk of air leakage in the inclined roadway.

[0044] An embodiment of the opening and closing operation of the air door is as follows. Please refer to Figure 2 , a handle 9 is provided on the movable side of the upper door panel 1 away from the upper rotating shaft 4 to realize the opening and closing operation of the air door by manually pulling and pushing the upper door panel 1.

[0045] Another embodiment of the opening and closing operation of the air door is that the axis of the upper rotating shaft 4 is parallel to the rotation axis of the upper door panel 1, and the upper rotating shaft 4 is connected to a driver, and the driver is electrically connected to the control system.

[0046] It can be understood that the rotation axis of the upper door panel 1 is the rotation axis of the hinge structure and also the door shaft of the upper door panel 1. If the axis of the upper rotating shaft 4 is parallel to the door shaft axis of the upper door panel 1, the upper door panel 1 can be rotated around its door shaft by rotating the upper rotating shaft 4. Based on this, the upper rotating shaft 4 is connected to a driver that is electrically connected to the control system. When the air door needs to be opened, only the control system is used to remotely control the driver to drive the upper rotating shaft 4 to rotate counterclockwise, which can drive the upper door panel 1 to rotate backward, and at the same time the lower door panel 2 is lifted upward. When the air door needs to be closed, only the control system is used to remotely control the driver to drive the upper rotating shaft 4 to rotate clockwise. Therefore, the above method can realize the automatic opening and closing operation of the air door, which is time-saving and labor-saving, and can also realize the precise control of the rotation angle of the upper door panel 1 and the lifting amplitude of the lower door panel 2.

[0047] Furthermore, a proximity switch is provided on the upper door panel 1, and the proximity switch is inductively matched with the lower door panel 2. When the lower door panel 2 rotates upward and is sensed by the proximity switch, the proximity switch sends a signal to the control system to control the lower door panel 2 to stop rotating, which can prevent the lower door panel 2 from lifting too much and colliding with the upper door panel 1, thus ensuring that both the upper door panel 1 and the lower door panel 2 are not damaged, and further contributing to improving the structural stability and service life of the air door.

[0048] Preferably, please refer to Figure 2 , several air door structures of the present application are provided, and several air door structures are arranged side by side to block the inclined roadway to adapt to the inclined roadway with a larger width.

[0049] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0050] The above has introduced in detail a folding air door for inclined mine roadways provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A folding damper for an inclined tunnel in a mine, characterized in that: The damper structure comprises an upper door plate (1) and a lower door plate (2) which are matched with each other in a gap seal, and the two are used to be placed in the inclined lane in sequence from top to bottom and block the inclined lane; the upper door plate (1) is provided with an upper rotating shaft (4), and the upper door plate (1) can drive the upper rotating shaft (4) to rotate clockwise and counterclockwise respectively when rotating forward and backward; the lower door plate (2) is provided with a lower rotating shaft (5) which is perpendicular to the upper rotating shaft (4), and the upper rotating shaft (4) and the lower rotating shaft (5) are respectively sleeved with a driving gear (6) and a driven gear (7) which are meshed and connected.

2. The folding air door for inclined tunnel in mining according to claim 1 is characterized in that: The upper door panel (1), the lower door panel (2) and the lower rotating shaft (5) are parallel to each other.

3. The folding air door for inclined tunnel in mining according to claim 1 is characterized in that: The upper rotating shaft (4) is arranged on the fixed side of the upper door panel (1), and the lower rotating shaft (5) is arranged on the fixed end of the lower door panel (2) adjacent to the upper door panel (1). An accommodating space (8) for placing the driving gear (6) and the driven gear (7) is reserved between the fixed side of the upper door panel (1) and the fixed end of the lower door panel (2).

4. The folding air door for inclined tunnel in mining according to claim 3 is characterized in that: A protective cover (10) is provided on the outer periphery of the accommodating space (8).

5. The folding air door for inclined tunnel in mining according to claim 1 is characterized in that: A sealing gasket is provided at either or both of the adjacent ends of the upper door panel (1) and the lower door panel (2).

6. The folding air door for inclined tunnel in mining according to any one of claims 1 to 5, characterized in that: A handle (9) is provided on the movable side of the upper door panel (1) away from the upper rotating shaft (4).

7. The folding air door for inclined tunnel in mining according to any one of claims 1 to 5, characterized in that: The axis of the upper rotating shaft (4) is parallel to the rotation axis of the upper door panel (1), the upper rotating shaft (4) is connected to a driver, and the driver electrical signal is connected to a control system.

8. The folding air door for inclined tunnel in mining according to claim 1 is characterized in that: The upper door panel (1) is provided with a proximity switch, and the proximity switch cooperates with the lower door panel (2) inductively. When the lower door panel (2) rotates upward and is sensed by the proximity switch, the proximity switch sends a signal to a control system to control the lower door panel (2) to stop rotating.

9. The folding air door for inclined tunnel in mining according to claim 1, characterized in that: The damper structure also includes a door frame (3) for fixing on the tunnel wall, the upper door panel (1) and the lower door panel (2) being placed in the door frame (3) in sequence from top to bottom, and the peripheries of the two are both in gap-sealed cooperation with the door frame (3).

10. The folding air door for inclined tunnel in mining according to claim 1, characterized in that: The damper structures are provided in a plurality, and the plurality of damper structures are arranged side by side to block the inclined lane.

Images