An automatic adjusting ventilation device based on coal mine safety

Abstract

The utility model provides a kind of automatic adjustment ventilation device based on coal mine safety, including wind pipe, ventilation hose and air outlet pipe that are connected together in turn, and the one end of wind pipe is provided with hanger assembly close to ventilation hose, and the outside of the one end of air outlet pipe close to ventilation hose is movably provided with support frame;The both sides of hanger assembly are provided with pitch adjusting mechanism;Support frame is provided with horizontal adjusting mechanism;In the utility model, wind pipe and air outlet pipe are connected by ventilation hose, so that air outlet pipe can swing relative to wind pipe without rigid interference;Pitch adjusting mechanism drives air outlet pipe to pitch adjustment, horizontal adjusting mechanism drives air outlet pipe to horizontal adjustment, and the range of air flow coverage is improved.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine safety equipment technology, specifically relating to an automatic regulating ventilation device based on coal mine safety. Background Technology

[0002] In coal mining operations, to ensure the safety of underground workers and the stability of the production environment, continuous and effective ventilation of mine roadways is necessary to deliver fresh air, dilute and expel harmful gases such as methane and carbon dioxide, and reduce dust concentration. Coal mine roadways are complex environments with large cross-sections and various obstacles such as personnel, equipment, tracks, and pipelines, placing high demands on the uniformity of air delivery, coverage, and airflow adjustment capabilities of ventilation systems.

[0003] Currently, coal mine ventilation devices are typically installed at the top of the roadway, using fans and guide vanes to adjust the airflow direction. For example, Chinese utility model patent document CN220815714U discloses a coal mine ventilation adjustment device. This device uses multiple swingable adjustment plates at the fan output end, driven by a push component to swing the plates up and down, thereby adjusting the airflow direction in the vertical plane. This directs the airflow to the bottom of the roadway, promoting the discharge of denser gases such as carbon dioxide. However, the adjustment plates can only swing up and down along the horizontal axis, limiting airflow adjustment to the vertical direction and preventing horizontal adjustment. This limitation results in the airflow coverage being mainly concentrated on the vertical cross-section of the roadway, with a fixed horizontal coverage width, making it difficult to create a uniform airflow distribution across the entire width of the roadway.

[0004] Therefore, there is an urgent need to provide a coal mine ventilation regulation device with multi-directional adjustment function to improve the airflow coverage range in order to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, this utility model provides a coal mine ventilation regulation device with multi-directional adjustment function and improved airflow coverage.

[0006] The technical solution of this utility model is: an automatic regulating ventilation device based on coal mine safety, including an air supply pipe, a ventilation hose and an air outlet pipe connected in series. A hanger assembly is provided on one end of the air supply pipe near the ventilation hose, and a support frame is movably sleeved on the outer side of one end of the air outlet pipe near the ventilation hose. Both sides of the hanger assembly are provided with pitch adjustment mechanisms. The pitch adjustment mechanism includes a swing arm. One end of the swing arm is rotatably connected to the hanger assembly, and the other end of the swing arm is fixedly connected to the support frame. A first electric cylinder is provided between the hanger assembly and the swing arm. The support frame is provided with a horizontal adjustment mechanism, which includes a second electric cylinder on the left side of the support frame and a third electric cylinder on the right side of the support frame. The cylinder bodies of the second and third electric cylinders are rotatably connected to the top of the support frame, and the telescopic ends of the second and third electric cylinders are hinged to the top of the air outlet pipe. The second and third electric cylinders are equipped with locking mechanisms, which are used to lock or release the cylinder body from the support frame.

[0007] Furthermore, the locking mechanism includes a support block, a hinged lug plate is fixedly provided on one side of the support block, the hinged lug plate is rotatably connected to the support frame, a locking lug plate is fixedly provided on the other side of the support block, and an electronically controlled lock for locking or releasing the locking lug plate from the support frame is mounted on the support frame. The second and third electric cylinders are assembled and fixed on one side of the support block of their corresponding locking mechanism.

[0008] Furthermore, the locking ear plate has a through hole that cooperates with the electric lock, and the electric lock is fixedly mounted on the top of the support frame by a limiting bracket.

[0009] Furthermore, the hanger assembly includes a crossbeam, with mounting seats fixedly installed at both ends of the crossbeam. A U-shaped hanger body matching the air duct is fixedly installed at the center of the bottom of the crossbeam, and a downward pressure rod that abuts against the top of the air duct is detachably installed inside the hanger body.

[0010] Furthermore, both ends of the lower pressure rod are provided with mounting screws, and the main body of the hanger is provided with mounting holes that match the mounting screws. The mounting screws are equipped with mounting nuts for locking or releasing the lower pressure rod and the main body of the hanger.

[0011] Furthermore, a reinforcing frame is provided on the outer side of the end of the air outlet pipe, and the telescopic ends of the second and third electric cylinders are both hinged to the top of the reinforcing frame.

[0012] Furthermore, one end of the first electric cylinder is rotatably connected to the hanger assembly, and the other end of the first electric cylinder is rotatably connected to the swing arm.

[0013] The beneficial effects of this utility model are: (1) In this utility model, the air supply pipe and the air outlet pipe are connected by a ventilation hose, so that the air outlet pipe can swing relative to the air supply pipe without rigid interference. (2) The pitch adjustment mechanism drives the air outlet pipe to pitch, and the horizontal adjustment mechanism drives the air outlet pipe to horizontal, thereby increasing the airflow coverage. (3) When the first electric cylinder extends and retracts, the drive swing arm swings around the hinge point between it and the hanger assembly. The swing arm drives the support frame and the air outlet pipe to swing up and down, and the outlet angle of the air outlet pipe changes. (4) The support frame is relatively fixed in the horizontal direction. When it is necessary to send air to the left, the locking mechanism of the second electric cylinder on the left locks its cylinder body to the support frame, and the second electric cylinder becomes a rigid fulcrum. The third electric cylinder on the right extends out, and because its telescopic end is hinged to the air outlet pipe, it pushes the air outlet pipe to rotate to the left around the vertical axis of the left fulcrum. The same applies when sending air to the right, with the right side locked and the left side driven. Attached Figure Description

[0014] Figure 1 This is one of the structural schematic diagrams of the automatic regulating ventilation device based on coal mine safety in this utility model.

[0015] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0016] Figure 3 This is the second schematic diagram of the automatic regulating ventilation device based on coal mine safety in this utility model.

[0017] Figure 4 for Figure 3 A magnified view of a section at point B in the middle. Detailed Implementation

[0018] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0019] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figures 1 to 4As shown, an automatic adjustable ventilation device based on coal mine safety is disclosed, including an air supply pipe 1, a ventilation hose 3, and an air outlet pipe 2 connected in series. A hanger assembly 4 is provided on one end of the air supply pipe 1 near the ventilation hose 3, and a support frame 6 is movably fitted on the outer side of the end of the air outlet pipe 2 near the ventilation hose 3. A pitch adjustment mechanism 5 is provided on both sides of the hanger assembly 4. The pitch adjustment mechanism 5 includes a swing arm 51, one end of which is rotatably connected to the hanger assembly 4, and the other end of which is fixedly connected to the support frame 6. A first electric cylinder 52 is provided between the hanger assembly 4 and the swing arm 51. A horizontal adjustment mechanism 7 is provided on the support frame 6. The horizontal adjustment mechanism 7 includes a horizontal adjustment mechanism located on the left side of the support frame. The second electric cylinder 71 and the third electric cylinder 72 are located on the right side of the support frame. The cylinder bodies of the second electric cylinder 71 and the third electric cylinder 72 are rotatably connected to the top of the support frame 6. The telescopic ends of the second electric cylinder 71 and the third electric cylinder 72 are hinged to the top of the air outlet pipe 2. The second electric cylinder 71 and the third electric cylinder 72 are provided with a locking mechanism 73, which is used to lock or release the cylinder bodies of the second electric cylinder 71 and the third electric cylinder 72 from the support frame 6. When the second electric cylinder 71 is locked, it provides a stable hinge point, and the third electric cylinder 72 extends to drive the air outlet pipe 2 to rotate to the right. When the third electric cylinder 72 is locked, it provides a stable hinge point, and the second electric cylinder 71 extends to drive the air outlet pipe 2 to rotate to the left.

[0021] In this embodiment, the air supply pipe 1 and the air outlet pipe 2 are connected by a ventilation hose 3, allowing the air outlet pipe 2 to swing relative to the air supply pipe 1 without rigid interference. The pitch adjustment mechanism 5 drives the air outlet pipe 2 to adjust its pitch, and the horizontal adjustment mechanism 7 drives the air outlet pipe 2 to adjust its horizontal position, thereby increasing the airflow coverage. When the first electric cylinder 52 extends or retracts, it drives the swing arm 51 to swing around its hinge point with the hanger assembly 4. The swing arm 51 drives the support frame 6 and the air outlet pipe 2 to swing up and down, changing the outlet elevation angle of the air outlet pipe 2. The support frame 6 is relatively fixed in the horizontal direction. When it is necessary to supply air to the left, the second electric cylinder on the left side... The locking mechanism of cylinder 71 locks its cylinder body to the support frame 6, making the second electric cylinder 71 a rigid fulcrum; the locking mechanism of the third electric cylinder 72 on the right releases its cylinder body from the support frame 6, and the third electric cylinder 72 on the right extends. Because its telescopic end is hinged to the air outlet pipe 2, it pushes the air outlet pipe to rotate to the left around the vertical axis of the left fulcrum; the same applies when blowing air to the right, with the right side locked and the left side driven; when switching between left and right air supply, both the second electric cylinder 71 and the third electric cylinder 72 need to retract to their initial state and be locked by the corresponding locking mechanism 73, and then adjusted according to the needs of left and right air supply.

[0022] In some embodiments, such as Figure 2As shown, the locking mechanism 73 includes a support block 731. A hinged ear plate 732 is fixedly mounted on one side of the support block 731 and is rotatably connected to the support frame 6. A locking ear plate 733 is fixedly mounted on the other side of the support block 731. An electric lock 734 for locking or releasing the locking ear plate 733 from the support frame 6 is mounted on the support frame 6. The second electric cylinder 71 and the third electric cylinder 72 are assembled and fixed on one side of the support block 731 of their respective locking mechanisms 73. The support block 731 serves as an intermediate connecting part, and the hinged ear plate 732 and the support frame 6 form a rotating pair, allowing the entire support block 731 and the electric cylinders fixed thereon to swing horizontally. The locking ear plate 733 cooperates with the electric lock 734. When the locking pin of the electric lock 734 is inserted into the through hole of the locking ear plate 733, the support block 731 and the support frame 6 cannot rotate relative to each other, and the cylinder body of the electric cylinder is fixed. The electric cylinder is mounted on the support block 731. Therefore, when the locking mechanism 73 is released, the electric cylinder can swing freely with the support block 731 to adapt to the angle change when the air outlet pipe 2 moves. When locked, the cylinder body becomes a rigid fixed point, providing a reaction force fulcrum for the electric cylinder on the other side.

[0023] In some embodiments, the locking ear plate 733 has a through hole that mates with the electric lock 734, and the electric lock 734 is fixedly mounted on the top of the support frame 6 by a limiting bracket 735. When the electric lock 734 is energized, the locking pin of the electric lock 734 retracts, unlocking; when the power is off, the locking pin of the electric lock 734 extends under the action of spring force and inserts into the through hole of the locking ear plate 733 to achieve mechanical locking. This power-off locking mode is particularly safe when the power supply in the coal mine is unstable, preventing accidental unlocking from causing the exhaust pipe to go out of control. The height and position design of the limiting bracket 735 must ensure that the axis of the locking pin of the electric lock 734 coincides with the axis of the through hole of the locking ear plate 733 in the locked state, and that the locking pin completely disengages from the through hole after unlocking without generating friction.

[0024] In some embodiments, the hanger assembly 4 includes a crossbeam 42, with mounting seats 43 fixedly disposed at both ends of the crossbeam 42. A U-shaped hanger body 41, matching the air duct 1, is fixedly disposed at the center of the bottom of the crossbeam 42. A downward pressure rod 44, which abuts against the top of the air duct 1, is detachably disposed inside the hanger body 41. The mounting seats 43 are used to fix the crossbeam 42 to the anchor bolts on the roof or sidewall of the tunnel. The crossbeam 42 bears the weight of the entire device. The air duct 1 is placed inside the U-shaped hanger body 41, and then the downward pressure rod 44 is assembled to the inside of the hanger body 41 to press the top of the air duct 1, thereby fixing the air duct 1.

[0025] In some embodiments, both ends of the lower pressure rod 44 are provided with mounting screws 441, and the hanger body 41 is provided with mounting holes 411 that match the mounting screws 441. Mounting nuts 442 for locking or releasing the lower pressure rod 44 and the hanger body 41 are mounted on the mounting screws 441. The mounting screws 441 at both ends of the lower pressure rod 44 pass through the mounting holes 411 on both sides of the hanger body 41, and the mounting nuts 442 are tightened from the outside of the hanger body 41. Spring washers or double nuts can be added between the mounting nuts 442 and the hanger body 41 to prevent loosening. When the mounting nuts 442 are tightened, the mounting screws 441 are pulled towards the hanger body 41 for fixation, and the lower pressure rod 44 presses downwards against the top of the air supply pipe 1; when the mounting nuts 442 are loosened, the lower pressure rod 44 can be lifted upwards to release the air supply pipe 1.

[0026] In some embodiments, a reinforcing frame 21 is provided on the outer side of the end of the air outlet duct 2, and the telescopic ends of the second electric cylinder 71 and the third electric cylinder 72 are both hinged to the top of the reinforcing frame 21. The reinforcing frame 21 is a rectangular metal frame, welded or fixed to the outer wall of the air outlet duct 2 by bolts. The reinforcing frame 21 improves the structural strength of the end of the air outlet duct 2 and prevents the electric cylinder thrust from directly acting on the thin-walled air outlet duct 2, which could lead to deformation or damage.

[0027] In some embodiments, one end of the first electric cylinder 52 is rotatably connected to the hanger assembly 4, and the other end of the first electric cylinder 52 is rotatably connected to the swing arm 51. The hanger assembly 4 is fixed, and one end of the swing arm 51 is hinged to the hanger assembly 4. The cylinder body of the first electric cylinder 52 is hinged to the hanger assembly 4, and the telescopic end is hinged to the middle of the swing arm 51. When the first electric cylinder 52 extends or retracts, the swing arm 51 rotates about its hinge point with the hanger assembly 4.

[0028] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0029] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An automatic regulating ventilation device based on coal mine safety, characterized in that: It includes an air supply pipe, a ventilation hose, and an air outlet pipe connected in series. A hanger assembly is provided on one end of the air supply pipe near the ventilation hose, and a support frame is movably fitted on the outer side of one end of the air outlet pipe near the ventilation hose. Both sides of the hanger assembly are provided with pitch adjustment mechanisms. The pitch adjustment mechanism includes a swing arm. One end of the swing arm is rotatably connected to the hanger assembly, and the other end of the swing arm is fixedly connected to the support frame. A first electric cylinder is provided between the hanger assembly and the swing arm. The support frame is provided with a horizontal adjustment mechanism, which includes a second electric cylinder on the left side of the support frame and a third electric cylinder on the right side of the support frame. The cylinder bodies of the second and third electric cylinders are rotatably connected to the top of the support frame, and the telescopic ends of the second and third electric cylinders are hinged to the top of the air outlet pipe. The second and third electric cylinders are equipped with locking mechanisms, which are used to lock or release the cylinder body from the support frame.

2. The automatic regulating ventilation device based on coal mine safety according to claim 1, characterized in that: The locking mechanism includes a support block, a hinged lug plate is fixedly provided on one side of the support block, the hinged lug plate is rotatably connected to the support frame, a locking lug plate is fixedly provided on the other side of the support block, and an electronic lock for locking or releasing the locking lug plate from the support frame is mounted on the support frame. The second and third electric cylinders are assembled and fixed on one side of the support block of their corresponding locking mechanism.

3. The automatic regulating ventilation device based on coal mine safety according to claim 2, characterized in that: The locking ear plate has a through hole that cooperates with the electric lock, and the electric lock is fixedly mounted on the top of the support frame by a limiting bracket.

4. The automatic regulating ventilation device based on coal mine safety according to claim 1, characterized in that: The hanger assembly includes a crossbeam, with mounting seats fixedly installed at both ends of the crossbeam. A U-shaped hanger body matching the air duct is fixedly installed at the center of the bottom of the crossbeam. A downward pressure rod that abuts against the top of the air duct is detachably installed inside the hanger body.

5. The automatic regulating ventilation device based on coal mine safety according to claim 4, characterized in that: Both ends of the lower pressure rod are provided with assembly screws, and the main body of the hanger is provided with assembly holes that match the assembly screws. The assembly screws are equipped with assembly nuts for locking or releasing the lower pressure rod and the main body of the hanger.

6. The automatic regulating ventilation device based on coal mine safety according to claim 1, characterized in that: A reinforcing frame is provided on the outer side of the end of the air outlet pipe, and the telescopic ends of the second and third electric cylinders are both hinged to the top of the reinforcing frame.

7. The automatic regulating ventilation device based on coal mine safety according to claim 1, characterized in that: One end of the first electric cylinder is rotatably connected to the hanger assembly, and the other end of the first electric cylinder is rotatably connected to the swing arm.

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