Mining scale type adjusting air window driven by manual gear

Abstract

The utility model discloses a manual gear driven mine scale type adjusting air window which is characterized in that a rack is arranged on a baffle, a gear is arranged in an air door plate communicating notch, the gear is coaxially and fixedly connected with a transmission rod, a steering wheel is fixedly arranged on the transmission rod, an angle dial is coaxially sleeved on the transmission rod, and a positioner is arranged on the steering wheel. During use, the steering wheel is operated and rotated, the baffle can be controlled to move in the air window through transmission of the transmission rod, the gear and the rack, numerical values on the angle dial correspond to the air window which is not shielded by the baffle, namely the opening area of the air window one to one, and therefore the air window can be accurately positioned by adjusting the numerical value pointed by the positioner on the angle dial. According to the air window opening adjusting device, the size of the air window opening can be simply controlled, and meanwhile more accurate adjustment can be achieved through the angle dial.

Description

Technical Field

[0001] The utility model relates to the field of mine ventilation equipment, in particular to a manual gear-driven scale-type regulating wind window for mining. Background Art

[0002] Mine dampers are crucial ventilation systems in mines. Typically installed on dampers or walls underground, they regulate negative pressure in the mine and air volume in the tunnel. Because air volume is positively correlated with the damper opening area, operators adjust air volume by varying the damper opening area.

[0003] Adjustable dampers are primarily categorized by their form factor into louver, impeller, and baffle types. Louvered dampers typically consist of a set of parallel blades forming a damper, secured by connecting rods. The connecting rods are controlled by a lever, which rotates the blades, changing their angles to adjust airflow. Due to the narrowness of the individual blades, this type of damper is difficult to control with small variations in blade angle, making it difficult to precisely control airflow in mine ventilation systems. Furthermore, the complex internal connections mean that damage to one transmission component affects the rotation of all blades, making subsequent repairs difficult. In the humid underground environment, rust on the connecting rods often causes the blades to become stuck, rendering the damper inoperable. Impeller dampers resemble three-bladed fans. While scales can be set on the edge of the damper to directly measure the opening area, the multiple blades, fixed at equal angles, can only rotate simultaneously around the center of the circle. Consequently, some blades will always obstruct the damper, resulting in a limited airflow control range. Furthermore, the central axis of rotation of the damper is connected to the damper or wall only by a fixing plate, making the damper susceptible to damage and deformation.

[0004] Currently, there is a manually adjustable wind window similar to the publication number CN219139111U, which is a baffle-type adjustable wind window. The wind window uses a small gear to drive a screw to indirectly drive the baffle to move left and right. Its adjustment efficiency is low, and the opening area of ​​the wind window cannot be directly observed. At the same time, since the adjustable wind window is generally set in the dirty air return air duct, its dustproof grid is too large to have no obvious effect on dust blocking, and too small will increase the ventilation resistance.

[0005] Due to the dark, damp, and polluted underground environment, various automated windshields are not only expensive to manufacture, but also have electronic components that are easily damaged. Practice has proven that manually adjustable windshields, primarily made of steel, are widely available and inexpensive, adaptable to harsh working environments and offer greater stability and cost-effectiveness. However, existing manually adjustable windshields still have drawbacks, prompting an urgent need for a new type of windshield that addresses existing issues such as complex control structures, easily damaged components, cumbersome air volume adjustment procedures, and low adjustment accuracy. Utility Model Content

[0006] (1) Technical problems to be solved: In view of the problems that the opening area of ​​the existing manual wind window cannot be directly observed, the air volume cannot be accurately controlled, and the control structure is complex, the utility model provides a manual gear-driven mining scale-type adjustable wind window whose opening area can be observed and determined in real time, thereby realizing accurate adjustment of the air volume.

[0007] (2) The technical solution adopted by this utility model is as follows:

[0008] A manually gear-driven mining scale-adjustable windshield comprises a wind door plate, characterized in that a wind window is provided on the wind door plate, a baffle and a fixed plate are provided at the wind window, the baffle and the fixed plate are staggered, the baffle is connected to the wind door plate through a sliding structure, a rack is provided on the baffle, a connecting slot connected to the wind window is provided on the wind door plate, a gear is provided inside the connecting slot, the gear is coaxially fixedly connected to a transmission rod, the transmission rod is rotatably connected to the wind door plate, a steering wheel is fixedly provided on the transmission rod, an angle dial is coaxially sleeved on the transmission rod, the angle dial is movably connected to the transmission rod, and the angle dial is fixed to the wind door plate, a positioner is provided on the steering wheel, and the gear and rack are meshed for transmission.

[0009] A further technical solution is that the sliding structure includes two upper and lower openings of slide groove 1 and slide groove 2 embedded in the damper plate, the grooves of slide groove 1 and slide groove 2 are opposite to each other, and slide groove 1 and slide groove 2 are both fixed to the damper plate by bolt 1, and the baffle is slidably connected between slide groove 1 and slide groove 2.

[0010] A further technical solution is that an arc-shaped notch is provided at the lower part of the baffle, a pulley is provided in the arc-shaped notch, the pulley is connected to the baffle through a pulley frame, the pulley frame and the baffle are fixed by bolts, the top of the baffle is located in slide groove one, and the pulley is located inside slide groove two.

[0011] A further technical solution is that there is a raised shaft on the transmission rod, an axis hole is opened in the gear, the raised shaft is located in the axis hole and is keyed to it, bearings are provided on both sides of the raised shaft, the inner ring of the bearing is fixed to the transmission rod, and the outer ring of the bearing is fixed to the damper plate.

[0012] The geometric relationship between the diameter of the gear designed in the present invention, the width of the baffle, and the windshield opening area indicated on the dial is as follows: the pitch circle diameter of the designed gear is d, the length of the baffle is L, and the height of the baffle is h. When the gear drives the rack to rotate one circle, the arc length traveled is πd, at which time the baffle is just fully opened and the windshield is in a fully open state. The length of the baffle is designed to be L=πd, so the maximum opening area of ​​the windshield is S=L·h=πd·h. Because the arc traveled by the gear after one circle is 2π, the arc actually rotated by the gear corresponds to the value indicated on the angle dial in terms of the scale value divided from 0 to 2π on the corresponding angle dial. Therefore, when the arc length traveled by the gear is xπ at any time, according to the proportional relationship, the opening area of ​​the windshield is For any specification of this type of windshield, after the gear pitch circle diameter d and the baffle height h are determined, the product of the two d·h is a specific value, so when manufacturing the angle dial, directly use Converted into coefficient n, the operator only needs to refer to the number x on the angle dial indicated by the positioner and quickly adjust the window area to the required area according to S`=xnπ.

[0013] Since each ventilation tunnel in the mine is equipped with a wind speed measuring instrument according to regulations, the wind speed in the tunnel can be observed in real time. Therefore, according to the air volume Q=sv, it can be seen that the air volume can be quickly adjusted by accurately adjusting the position of the wind window baffle.

[0014] (3) Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: by arranging a rack on the baffle, a gear is arranged inside the connecting slot of the air damper plate, the gear is coaxially fixedly connected to the transmission rod, a steering wheel is fixedly arranged on the transmission rod, an angle dial is coaxially sleeved on the transmission rod, a positioner is arranged on the steering wheel, the gear and the rack are meshed for transmission, and when in use, the baffle can be controlled to move in the windshield by rotating the steering wheel through the transmission of the transmission rod, the gear and the rack. The value on the angle dial corresponds to the area of ​​the windshield that is not blocked by the baffle, that is, the area of ​​the windshield opening. Therefore, by adjusting the value indicated by the positioner on the angle dial, the corresponding area of ​​the windshield opening can be adjusted, and more precise adjustment can be achieved. The present invention can achieve more precise adjustment by using the angle dial while achieving simple control of the size of the windshield opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model

[0016] Figure 2 This is a schematic diagram of the structure of the rack and gear connected in this utility model

[0017] Figure 3 This is a structural diagram of the chute 1 and chute 2 of the utility model

[0018] Figure 4 This is a schematic diagram of the structure of the baffle of the utility model

[0019] Figure 5 This is a schematic diagram of the structure of the pulley of the utility model

[0020] Figure 6 This is a schematic diagram of the exploded components of the transmission rod of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-6 A manually gear-driven, graduated, adjustable windshield for mining applications includes a damper plate 1, characterized in that the damper plate 1 has a wind window 2, a baffle 3 and a fixed plate 4 disposed at the wind window 2, the baffle 3 and the fixed plate 4 being offset from each other, the baffle 3 being connected to the damper plate 1 via a sliding structure, a rack 5 being disposed on the baffle 3, a connecting slot 6 being disposed on the damper plate 1 for communicating with the wind window 2, a gear 7 being disposed within the connecting slot 6, the gear 7 being coaxially fixedly connected to a transmission rod 8, the transmission rod 8 being rotatably connected to the damper plate 1, a steering wheel 9 being fixedly disposed on the transmission rod 8, an angle dial 10 being coaxially sleeved on the transmission rod 8, the angle dial 10 being movably connected to the transmission rod 8 and fixed to the damper plate 1, a positioner 11 being disposed on the steering wheel 9, and the gear 7 being meshed with the rack 5 for transmission. The fixed plate 4 is fixed to the damper plate 1, located on one side of the wind window 2, and the position of the baffle 3 can be moved to control the opening size of the wind window 2.

[0023] When using, first determine the size of the windshield, and determine the geometric relationship between the scale value on the angle dial 10 and the windshield opening area, as follows:

[0024] The geometric relationship between the diameter of the gear 7 designed in the present invention, the length of the baffle 3, and the windshield opening area indicated on the angle scale 10 is as follows:

[0025] The pitch circle diameter of gear 7 is d, the baffle length is L, and the height of baffle 3 is h. When gear 7 drives the rack to rotate one circle, the arc length traveled is πd, at this time, the baffle 3 is just fully opened, and the windshield is in the fully open state. The design length of the baffle is L = πd, so the maximum opening area of ​​the windshield is S = L·h = πd·h. Because the arc traveled by the gear after one circle is 2π, the arc actually rotated by the gear corresponds to the value indicated on the angle scale from 0 to 2π. Therefore, when the arc length traveled by the gear is xπ at any time, according to the proportional relationship, the opening area of ​​the windshield is For any specification of this type of windshield, after the gear pitch circle diameter d and the baffle height h are determined, the product of the two d·h is a specific value, so when manufacturing the angle dial, directly use Converted into coefficient n, the operator only needs to refer to the number x on the angle dial indicated by the positioner and quickly adjust the window area to the required area according to S = xnπ.

[0026] The pitch circle diameter of the gear 7 is designed to be d. When the gear 7 rotates one circle, the arc length it travels is πd, which just makes the baffle 3 fully open. The length L of the baffle 3 is designed to be πd. When the height of the baffle 3 is designed to be h, the fully opened area of ​​the windshield is S = L·h = πd·h. Since the arc covered by the gear 7 after one circle is 2π, the arc actually rotated by the gear 7 corresponds to the value indicated on the angle dial 10 in terms of the scale value divided from 0 to 2π on the dial. Therefore, when the arc length covered by the gear 7 is xπ at any time, according to the proportional relationship, the opening area of ​​the windshield is For any specification of this type of windshield, after the pitch circle diameter d of the gear 7 and the height h of the baffle 3 are determined, the product d·h of the two is a specific value. Therefore, when manufacturing the angle scale 10, the angle scale 10 is directly It is converted into coefficient n, so the operator only needs to refer to the number x on the angle scale indicated by the positioner 11 and quickly adjust the window area to the required area according to S`=xnπ.

[0027] Each ventilation tunnel in the mine is equipped with a wind speed measuring instrument according to regulations, which can observe the wind speed in the tunnel in real time. According to the wind volume Q=sv, the wind volume can be quickly adjusted by accurately adjusting the position of the wind window baffle 3.

[0028] During operation, according to the required wind volume and wind speed, the steering wheel 9 is operated to make the positioner 11 point to the corresponding value on the angle dial 10 to quickly adjust the wind window wind volume.

[0029] The sliding structure includes two opposing upper and lower openings, one chute 12 and one chute 13, embedded within the windshield 2. The notches of chute 12 and chute 13 face each other and are secured to the damper plate 1 via bolt 1. The baffle 3 slides between chute 12 and chute 13. Bolt holes are defined at the left and right ends of chute 12 and chute 13. The damper plate 1 is provided with threaded holes corresponding to the bolt holes. Bolts pass through the bolt holes to secure the damper plate 1. chute 12 and chute 13 define the direction of movement of the baffle 3, achieving a sliding connection between the baffle 3 and the damper plate 1.

[0030] A circular arc-shaped notch 14 is provided at the lower part of the baffle 3, and a pulley 15 is provided in the circular arc-shaped notch 14. The pulley 15 is connected to the baffle 3 through a pulley frame 16, and the pulley frame 16 and the baffle 3 are fixed by bolts. The top of the baffle 3 is located in the slide groove 12, and the pulley 15 is located inside the slide groove 2 13. By providing the pulley 15, the resistance of the baffle 3 when moving can be greatly reduced.

[0031] There is a raised shaft 17 on the transmission rod 8, and a shaft hole 18 is opened in the gear 7. The raised shaft 17 is located in the shaft hole 18 and is keyed to it. Bearings 19 are provided on both sides of the raised shaft 17. The inner ring of the bearing 19 is axially fixed to the transmission rod 8 to limit the axial position of the inner ring of the bearing 19 on the transmission rod 8. The outer ring of the bearing 19 is fixed to the damper plate 1, thereby realizing the rotational connection between the transmission rod 8 and the damper plate 1.

[0032] The above are only preferred embodiments of the present invention.

Claims

1. A manual gear driven scale-type adjustable wind window for mining, comprising a wind door plate (1), characterized in that: The damper plate (1) is provided with a wind window (2), a baffle (3) and a fixed plate (4) are provided at the wind window (2), the baffle (3) and the fixed plate (4) are staggered, the baffle (3) is connected to the damper plate (1) through a sliding structure, the baffle (3) is provided with a rack (5), the damper plate (1) is provided with a connecting slot (6) connected to the wind window (2), a gear (7) is provided inside the connecting slot (6), the gear (7) is coaxially fixedly connected to a transmission rod (8), the transmission rod (8) is rotatably connected to the damper plate (1), a steering wheel (9) is fixedly provided on the transmission rod (8), an angle scale (10) is coaxially sleeved on the transmission rod (8), the angle scale (10) is movably connected to the transmission rod (8), and the angle scale (10) is fixed to the damper plate (1), a positioner (11) is provided on the steering wheel (9), and the gear (7) is meshed with the rack (5) for transmission.

2. A manual gear driven scale-adjustable windshield for mining use according to claim 1, characterized in that: The sliding structure comprises a slide groove 1 (12) and a slide groove 2 (13) with two upper and lower openings facing each other embedded in the wind window (2), the grooves of the slide groove 1 (12) and the grooves of the slide groove 2 (13) facing each other, the slide groove 1 (12) and the slide groove 2 (13) are both fixed to the damper plate (1) by bolt 1, and the baffle (3) is slidably connected between the slide groove 1 (12) and the slide groove 2 (13).

3. The manual gear driven scale-adjustable windshield for mining use according to claim 1, characterized in that: The baffle (3) is provided with an arc-shaped notch (14) at the lower part, and a pulley (15) is provided in the arc-shaped notch (14). The pulley (15) is connected to the baffle (3) through a pulley frame (16). The pulley frame (16) and the baffle (3) are fixed by bolts. The top of the baffle (3) is located in the first slide groove (12), and the pulley (15) is located inside the second slide groove (13).

4. The manual gear driven scale-adjustable windshield for mining use according to claim 1, characterized in that: The transmission rod (8) has a raised shaft (17), a shaft hole (18) is provided in the gear (7), the raised shaft (17) is located in the shaft hole (18) and is key-connected thereto, bearings (19) are provided on both sides of the raised shaft (17), the inner ring of the bearing (19) is fixed to the transmission rod (8), and the outer ring of the bearing (19) is fixed to the damper plate (1).

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