Mining exhaust shutter convenient to mount and dismount

Abstract

The utility model relates to the technical field of shutters, and discloses a mining exhaust shutter convenient to mount and dismount, which comprises a support frame and a window frame fixedly connected to the left end of the support frame, and a plurality of shutter blades are uniformly mounted in the window frame from top to bottom; limiting rods are fixedly connected to the upper ends and the lower ends of the surfaces of the front side and the rear side of the supporting frame, the limiting rods are movably sleeved with limiting pipes, and butt joint mechanisms are arranged in the middles of the surfaces of the front side and the rear side of the supporting frame; when the device is installed for the first time, although a limiting pipe and a C-shaped plate need to be fixed on a roadway wall or a ventilation opening in advance, only a limiting rod of a supporting frame needs to be inserted into the limiting pipe and then pushed rightwards during subsequent installation, a second rack is meshed with a second gear, a pawl automatically clamps a ratchet wheel under the action of a spring, firm locking is completed, and the process is extremely convenient and fast; during disassembly, the whole supporting frame can be easily pulled out leftwards only by simultaneously pulling the pawls on the two sides upwards with two hands to be separated from the ratchet wheels, and maintenance is extremely convenient.

Description

Technical Field

[0001] This utility model relates to the field of louver technology, specifically a mine ventilation louver that is easy to install and disassemble. Background Technology

[0002] In the mining process, the ventilation system is one of the core facilities to ensure the safety of underground operations. Its function is to provide a safe working environment for miners by continuously expelling harmful gases and dust and regulating temperature and humidity. As an important component of the ventilation system, exhaust louvers are usually installed on the roadway wall or ventilation opening to control the airflow direction and prevent foreign objects from entering the air duct.

[0003] The existing louvers used for mine ventilation require manual rotation of the adjustment knob to adjust the ventilation volume, which is quite laborious. Furthermore, once the blade angle is adjusted, it does not have a further fixing function, and long-term rotation adjustment will result in the blades becoming unstable after adjustment.

[0004] Chinese patent discloses a louvered window for mine ventilation with adjustable function (authorization announcement number CN217872879U). The patented technology includes:

[0005] By installing a motor inside the window frame, when it is necessary to adjust the ventilation volume of the louvers, i.e., the tilt angle of the louvers, the motor drives the lead screw to rotate, causing the movable rod to move vertically. This, in turn, drives the gear meshing with it to rotate, thereby causing the louvers on the rotating shaft to change angle. No manual adjustment is required. Before adjustment, pull the handle forward to move the fixing rod out of the fixing hole of the slider and compress the spring. During adjustment, the slider slides vertically in the groove. After adjustment, release the handle, and the spring drives the fixing rod on the handle to insert into the fixing hole to fix the slider. This fixes the movable rod, further securing the adjusted louvers and avoiding the phenomenon of unstable louvers after long-term rotational adjustment.

[0006] However, it has certain drawbacks: like traditional louvers, whether it is the initial installation or subsequent maintenance and disassembly, operators need to use tools (such as wrenches) to tighten or loosen a large number of fixing bolts one by one. The process is cumbersome and time-consuming. In the complex, narrow or high-altitude working environment of mines, this problem of inconvenient installation and disassembly is particularly prominent, which greatly increases the labor intensity and working time of workers and reduces the efficiency of ventilation system maintenance. Utility Model Content

[0007] The purpose of this utility model is to provide a mine ventilation louver that is easy to install and disassemble, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A mine ventilation louver that is easy to install and disassemble includes a support frame and a window frame fixed to the left end of the support frame. Multiple window leaves are evenly installed inside the window frame from top to bottom. A rotating shaft is fixed to the front end of each window leaf. A gear is fixedly sleeved on the outside of the rotating shaft. An adjustment mechanism is provided on the front surface of the window frame.

[0010] Limiting rods are fixedly connected to the upper and lower ends of the front and rear surfaces of the support frame. Limiting tubes are movably sleeved on the outside of the limiting rods. A docking mechanism is provided at the middle position of the front and rear surfaces of the support frame. The docking mechanism includes a rack and pinion and a C-shaped plate located below the rack. A fixing plate is fixedly connected to the left end of the rack. A rotating rod is rotatably connected to the side of the C-shaped plate away from the support frame. A gear is fixedly sleeved on the outside of the rotating rod located inside the C-shaped plate, and a ratchet is fixedly sleeved on the outside of the rotating rod located outside the C-shaped plate. A locking element is provided on the side of the C-shaped plate away from the support frame and above the rotating rod.

[0011] As a further embodiment of this utility model: the adjustment mechanism includes a support block, a telescopic cylinder is fixedly connected to the lower surface of the support block, a rack is fixedly connected to the telescopic end of the telescopic cylinder, a stabilizing rod is movably connected through the inside of the rack, and a stabilizing plate is fixedly connected to the upper end of the stabilizing rod.

[0012] As a further embodiment of this utility model: the locking component includes a spring, with a fixing block and a pawl fixedly connected to the upper and lower ends of the spring, respectively, and a fixing rod rotatably connected to the end of the pawl away from the rotating rod.

[0013] As a further embodiment of this utility model: the rear end of the window leaf is rotatably connected to the inner rear surface of the window frame, the rotating shaft moves through the front surface of the window frame, the first gear is located on the front side of the window frame, the fixing plate is fixed to one side surface of the support frame, and the second rack is meshed with the second gear.

[0014] As a further embodiment of this utility model: the support block is fixedly connected to the lower end of the front surface of the window frame, the rack is meshed with the gear, and the stabilizing plate is fixedly connected to the upper end of the front surface of the window frame.

[0015] As a further embodiment of this utility model: the pawl is attached to the ratchet, and the fixing block and the fixing rod are both fixed to the surface of the C-shaped plate away from the support frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model uses limiting rods and limiting tubes on both sides of the support frame for initial positioning, and uses a docking mechanism to achieve quick locking. During the initial installation, although the limiting tubes and C-shaped plates need to be fixed to the tunnel wall or ventilation opening in advance, each subsequent installation only requires inserting the limiting rod of the support frame into the limiting tube and pushing it to the right. The rack and pinion, i.e., the gear, engages with the second gear, and the pawl automatically locks into the ratchet under the action of the spring, completing a firm lock. The process is extremely convenient. When disassembling, simply use both hands to simultaneously pull the pawls on both sides upward to disengage them from the ratchet, and the entire support frame can be easily pulled out to the left, making maintenance extremely convenient.

[0018] 2. This utility model uses a telescopic cylinder to drive a rack to move up and down, which in turn drives all gears to rotate synchronously. Then, the tilt angle of all window leaves can be adjusted uniformly and precisely through a rotating shaft, making the control of the ventilation opening and closing range efficient and reliable. Attached Figure Description

[0019] Figure 1 A schematic diagram of a mine ventilation louver that is easy to install and disassemble;

[0020] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0021] Figure 3 A schematic diagram of the adjusting mechanism in a mine ventilation louver that is easy to install and disassemble;

[0022] Figure 4 A schematic diagram of the docking mechanism in a mine ventilation louver that is easy to install and disassemble;

[0023] Figure 5 This is a schematic diagram of the locking mechanism in a mine ventilation louver that is easy to install and disassemble.

[0024] In the diagram: 1. Support frame; 2. Window frame; 3. Window leaf; 4. Rotating shaft; 5. Gear 1; 6. Adjustment mechanism; 7. Support block; 8. Telescopic cylinder; 9. Rack 1; 10. Stabilizing bar; 11. Stabilizing plate; 12. Limiting rod; 13. Limiting tube; 14. Connecting mechanism; 15. Rack 2; 16. C-shaped plate; 17. Fixing plate; 18. Rotating rod; 19. Gear 2; 20. Ratchet; 21. Locking element; 22. Spring; 23. Fixing block; 24. Pawl; 25. Fixing rod. Detailed Implementation

[0025] Please see Figures 1-3In this embodiment of the utility model, a mine ventilation louver that is easy to install and disassemble includes a support frame 1 and a window frame 2 fixed to the left end of the support frame 1. Multiple window leaves 3 are evenly installed inside the window frame 2 from top to bottom. The rear end of the window leaves 3 is rotatably connected to the rear surface of the window frame 2. The front end of the window leaves 3 is fixedly connected to a rotating shaft 4. The rotating shaft 4 moves through the front surface of the window frame 2. A gear 5 is fixedly sleeved on the outside of the rotating shaft 4. The gear 5 is located on the front side of the window frame 2. An adjustment mechanism 6 is provided on the front surface of the window frame 2. The adjustment mechanism 6 includes a support block 7. The support block 7 is fixedly connected to the lower end of the front surface of the window frame 2. A telescopic cylinder 8 is fixedly connected to the lower surface of the support block 7. A rack 9 is fixedly connected to the telescopic end of the telescopic cylinder 8. The rack 9 is meshed with the gear 5. A stabilizing rod 10 is movably connected through the inside of the rack 9. A stabilizing plate 11 is fixedly connected to the upper end of the stabilizing rod 10. The stabilizing plate 11 is fixedly connected to the upper end of the front surface of the window frame 2.

[0026] The louvers are installed on the walls of mine tunnels, ventilation openings, and other locations.

[0027] The rear end of the window leaf 3 and the inner rear surface of the window frame 2 can be rotatably connected by a bearing. Specifically, the outer ring of the bearing is embedded and fixed in the window frame 2, and the inner ring of the bearing is fixed to the outside of the rear end of the window leaf 3.

[0028] The telescopic cylinder 8 is preferably a servo electric cylinder, which can precisely control the extension and retraction stroke;

[0029] The up-and-down movement of rack 9 can drive all gears 5 to rotate, thereby adjusting the opening and closing range of window leaf 3.

[0030] exist Figure 1 , Figure 4 and Figure 5 In the middle: Limiting rods 12 are fixedly connected to the upper and lower ends of the front and rear surfaces of the support frame 1. Limiting tubes 13 are movably sleeved on the outside of the limiting rods 12. A docking mechanism 14 is provided at the middle position of the front and rear surfaces of the support frame 1. The docking mechanism 14 includes a rack 15 and a C-shaped plate 16 located below the rack 15. A fixing plate 17 is fixedly connected to the left end of the rack 15. The fixing plate 17 is fixedly connected to one side surface of the support frame 1. A rotating rod 18 is rotatably connected through the side surface of the C-shaped plate 16 away from the support frame 1. A gear is fixedly sleeved on the outside of the rotating rod 18 inside the C-shaped plate 16. 19. Rack 15 is meshed with gear 19. A ratchet 20 is fixedly sleeved on the outside of C-shaped plate 16. A locking member 21 is provided on the side surface of C-shaped plate 16 away from support frame 1 and above the rotating rod 18. The locking member 21 includes a spring 22. The upper and lower ends of the spring 22 are respectively fixedly connected to a fixing block 23 and a pawl 24. The pawl 24 is attached to the ratchet 20. A fixing rod 25 is rotatably connected to the end of the pawl 24 away from the rotating rod 18. The fixing block 23 and the fixing rod 25 are both fixedly connected to the side surface of C-shaped plate 16 away from support frame 1.

[0031] The right ends of the limiting tube 13 and the C-shaped plate 16 are both fixed to the mine roadway wall, ventilation opening and other locations by bolts;

[0032] The pawl 24 engages with the ratchet 20, so that when the rack 2 15 approaches and meshes with the gear 2 19 from left to right, the gear 2 19 and the rotating rod 18 can rotate normally. After meshing, the rack 2 15 cannot move from right to left, thus completing the installation of the louver.

[0033] Simultaneously, by pulling the two pawls 24 upwards to move them away from the ratchet 20, the support frame 1 can be removed from its installation position for easy maintenance.

[0034] The working principle of this utility model is as follows: During the initial installation, the limiting tube 13 and the C-shaped plate 16 are first fixed to the tunnel wall or ventilation opening with bolts; when installing the louvers, the limiting rod 12 of the support frame 1 is aligned with the insertion of the limiting tube 13, and then the support frame 1 is pushed to the right, so that the rack 2 15 meshes with the gear 2 19. During this process, the pawl 24 automatically engages with the ratchet 20 under the action of the spring 22, preventing the rack 2 15 from retracting in the opposite direction, thus completing the quick locking installation; during the later disassembly and maintenance, the pawls 24 on both sides are simultaneously pulled upward to disengage them from the ratchet 20, and the support frame 1 and the limiting rod 12 can be pulled out to the left (driving the rack 2 15 out of the gear 2 19) and the limiting rod 12, thus achieving convenient disassembly; when adjusting the ventilation opening and closing range, the telescopic cylinder 8 is activated to drive the rack 1 9 to move up and down along the stabilizing rod 10. The rack 1 9 drives all the gears 1 5 to rotate synchronously, thereby adjusting the tilt angle of all the louvers 3 in a unified manner through the rotating shaft 4.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A mine ventilation louver that is easy to install and disassemble, comprising a support frame (1) and a window frame (2) fixed to the left end of the support frame (1), wherein multiple window leaves (3) are evenly installed inside the window frame (2) from top to bottom, a rotating shaft (4) is fixed to the front end of the window leaf (3), a gear (5) is fixedly sleeved on the outside of the rotating shaft (4), and an adjustment mechanism (6) is provided on the front surface of the window frame (2). Its features are, Limiting rods (12) are fixedly connected to the upper and lower ends of the front and rear surfaces of the support frame (1). Limiting tubes (13) are movably sleeved on the outside of the limiting rods (12). A docking mechanism (14) is provided at the middle position of the front and rear surfaces of the support frame (1). The docking mechanism (14) includes a rack (15) and a C-shaped plate (16) located below the rack (15). A fixing plate (17) is fixedly connected to the left end of the rack (15). A rotating rod (18) is rotatably connected through the side surface of the C-shaped plate (16) away from the support frame (1). A gear (19) is fixedly sleeved on the outside of the rotating rod (18) located inside the C-shaped plate (16). A ratchet (20) is fixedly sleeved on the outside of the rotating rod (18) located outside the C-shaped plate (16). A locking member (21) is provided on the side surface of the C-shaped plate (16) away from the support frame (1) and above the rotating rod (18).

2. The mine ventilation louver that is easy to install and disassemble according to claim 1, characterized in that, The adjustment mechanism (6) includes a support block (7), a telescopic cylinder (8) is fixedly connected to the lower surface of the support block (7), a rack (9) is fixedly connected to the telescopic end of the telescopic cylinder (8), a stabilizing rod (10) is movably connected inside the rack (9), and a stabilizing plate (11) is fixedly connected to the upper end of the stabilizing rod (10).

3. A mine ventilation louver that is easy to install and disassemble according to claim 1, characterized in that, The locking component (21) includes a spring (22), with a fixing block (23) and a pawl (24) fixedly connected to the upper and lower ends of the spring (22), respectively. A fixing rod (25) is rotatably connected to the end of the pawl (24) away from the rotating rod (18).

4. A mine ventilation louver that is easy to install and disassemble according to claim 1, characterized in that, The rear end of the window leaf (3) is rotatably connected to the inner rear surface of the window frame (2), the rotating shaft (4) moves through the front surface of the window frame (2), the gear one (5) is located on the front side of the window frame (2), the fixing plate (17) is fixed to one side surface of the support frame (1), and the rack two (15) is meshed with the gear two (19).

5. A mine ventilation louver that is easy to install and disassemble according to claim 2, characterized in that, The support block (7) is fixed to the lower end of the front surface of the window frame (2), the rack (9) is meshed with the gear (5), and the stabilizing plate (11) is fixed to the upper end of the front surface of the window frame (2).

6. A mine ventilation louver that is easy to install and disassemble according to claim 3, characterized in that, The pawl (24) is attached to the ratchet (20), and the fixing block (23) and the fixing rod (25) are both fixed to the side surface of the C-shaped plate (16) away from the support frame (1).

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