Coal mine underground mechanical air door locking device

Abstract

The utility model relates to the field of mine ventilation facilities, in particular to an underground coal mine mechanical air door locking device. A first sleeve and a second sleeve are fixed to the two sides of the front face of the fixing plate correspondingly, a first sliding rod connected with the first air door is slidably connected into the first sleeve, a second sliding rod connected with the second air door is slidably connected into the second sleeve, and a connecting block is arranged between the middle of the first sleeve and the middle of the second sleeve. A sliding cavity communicating with the first sleeve and the second sleeve is formed in the connecting block, a locking block matched with the first sliding rod and the second sliding rod for use is slidably connected into the sliding cavity, and the length of the locking block is larger than that of the sliding cavity. The first sliding rod makes contact with the locking block, the locking block is squeezed towards the second sleeve side along the sliding cavity, at the moment, the second sliding rod is limited by the locking block, the second air door cannot be opened, when the first air door is closed, the first sliding rod descends to the bottom of the first sleeve, limiting on the locking block is released, the second air door can be controlled to be opened, and the second air door is controlled in the same way. And the stability of the air door is ensured.

Description

Technical Field

[0001] The utility model relates to the field of mine ventilation facilities, in particular to an underground mechanical air door locking device in a coal mine. Background Art

[0002] The stability and reliability of mine ventilation facilities, especially dampers, plays a vital role in ensuring the stable operation of mine ventilation systems. The stability and reliability of mine ventilation facilities, especially dampers, is a necessary condition for safe production in mines. In mine ventilation systems, the stability and reliability of damper locking devices is an indispensable prerequisite for achieving stable and reliable ventilation systems. In order to ensure the reliability and stability of underground ventilation facilities, especially dampers, in coal mines, and to effectively achieve the stable operation of mine ventilation systems, damper locking devices are an indispensable and important facility. The underground damper locking device ensures the smooth operation of the damper, avoids the simultaneous opening of the first damper and the second damper, and ensures the stability of ventilation facilities, especially dampers. The ease of use and stability of the damper locking device have always been an important direction for the improvement of this equipment. Utility Model Content

[0003] The utility model aims to solve the above problem, thereby providing a mechanical air door locking device for underground coal mines which can prevent air doors from opening at the same time.

[0004] The utility model solves the above problems and adopts the following technical solutions:

[0005] A mechanical damper locking device for an underground coal mine comprises a first counterweight block connected to a first damper and a second counterweight block connected to a second damper, a fixing plate is arranged between the first counterweight block and the second counterweight block, a first sleeve and a second sleeve are fixed to the front sides of the fixing plate respectively, a first sliding rod connected to the first damper is slidably connected in the first sleeve, a second sliding rod connected to the second damper is slidably connected in the second sleeve, a connecting block is arranged between the middle parts of the first sleeve and the second sleeve, a sliding cavity communicating with the first sleeve and the second sleeve is opened in the connecting block, a locking block used in cooperation with the first sliding rod and the second sliding rod is slidably connected in the sliding cavity, and the length of the locking block is greater than the length of the sliding cavity.

[0006] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0007] When the first air door is opened, the first sliding rod drives the first sliding rod to rise, and the first sliding rod contacts the locking block, squeezing the locking block along the sliding cavity toward the second sleeve side. At this time, the second sliding rod is limited by the locking block, resulting in the second air door being unable to open. When the first air door is closed, the first sliding rod descends to the bottom of the first sleeve, releasing the limit on the locking block, and the second air door can be controlled to open. The second air door is controlled in the same way, ensuring the stability of the air door.

[0008] As a preferred embodiment, a further technical solution of the utility model is:

[0009] Furthermore, the locking block is an ellipsoid, the tops of the first sliding rod and the second sliding rod are hemispherical, the two sides of the sliding cavity are open and the inner wall is an arc surface that shrinks from the middle to the two sides, the locking block slides and is stuck in the sliding cavity, and when the locking block is not in contact with the first sliding rod and the second sliding rod, both sides of the locking block are located outside the sliding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the utility model;

[0011] Marked in the figure are: first counterweight block 1, second counterweight block 2, first slide bar 3, second slide bar 4, first sleeve 5, second sleeve 6, fixing plate 7, connecting block 8, locking block 9. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0013] A mechanical damper locking device for underground coal mines, comprising a first counterweight block 1 connected to a first damper and a second counterweight block 2 connected to a second damper, a fixing plate 7 is arranged between the first counterweight block 1 and the second counterweight block 2, a first sleeve 5 and a second sleeve 6 are respectively fixed on both sides of the front of the fixing plate 7, a first slide bar 3 connected to the first damper is slidably connected in the first sleeve 5, the first counterweight block 1 and the first slide bar 3 move synchronously, the first slide bar 3 is adapted to the inner diameter of the first sleeve 5, a second slide bar 4 connected to the second damper is slidably connected in the second sleeve 6, the second counterweight block 2 and the second slide bar 4 move synchronously, the second slide bar 4 and the second sleeve 6 is adapted to the inner diameter of the damper, the damper and the counterweight block, and the damper and the slide bar are connected by a wire rope, a pulley is provided at the corner of the wire rope, a connecting block 8 is provided between the middle parts of the first sleeve 5 and the second sleeve 6, a sliding cavity connected to the first sleeve 5 and the second sleeve 6 is opened on the connecting block 8, and a locking block 9 used in conjunction with the first slide bar 3 and the second slide bar 4 is slidably connected in the sliding cavity. The length of the locking block 9 is greater than the length of the sliding cavity. Under the deadweight of the counterweight block, the damper is kept closed. The locking effect of the damper can be adjusted by adjusting the weight of the two counterweight blocks. The counterweight block is arranged on the outside of the fixed plate 7 to facilitate the adjustment of the counterweight block weight according to the required locking effect.

[0014] Furthermore, the locking block 9 is an ellipsoid, the top of the first slide bar 3 and the second slide bar 4 is hemispherical, the two sides of the slide cavity are open and the inner wall is an arc surface that shrinks from the middle to the two sides, the locking block 9 slides and is stuck in the slide cavity, when the locking block 9 is not in contact with the first slide bar 3 and the second slide bar 4, both sides of the locking block 9 are located outside the slide cavity, after the locking block 9 contacts the first slide bar 3 or the second slide bar 4, the side of the locking block 9 that is not in contact slides to the outside of the slide cavity, the top of the first slide bar 3 or the second slide bar 4 first squeezes the locking block 9, the locking block 9 moves along the slide cavity to the other side, and locks the other side, when the damper is opened, the rod body of the first slide bar 3 or the second slide bar 4 that moves upward is opposite to the locking block, and the hemispherical shape and the ellipsoid are smoother to use together.

[0015] When the first air door is opened, the first sliding rod drives the first sliding rod to rise, and the first sliding rod contacts the locking block, squeezing the locking block along the sliding cavity toward the second sleeve side. At this time, the second sliding rod is limited by the locking block, resulting in the second air door being unable to open. When the first air door is closed, the first sliding rod descends to the bottom of the first sleeve, releasing the limit on the locking block, and the second air door can be controlled to open. The second air door is controlled in the same way, ensuring the stability of the air door.

[0016] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A mechanical damper locking device for an underground coal mine, comprising a first counterweight connected to a first damper and a second counterweight connected to a second damper, characterized in that: A fixing plate is arranged between the first counterweight block and the second counterweight block, and the first sleeve and the second sleeve are fixed to the front sides of the fixing plate respectively, the first sleeve is slidably connected with the first sliding rod connected to the first air gate, the second sleeve is slidably connected with the second sliding rod connected to the second air gate, a connecting block is arranged between the middle parts of the first sleeve and the second sleeve, a sliding cavity connected with the first sleeve and the second sleeve is opened on the connecting block, and a locking block used in cooperation with the first sliding rod and the second sliding rod is slidably connected in the sliding cavity.

2. The mechanical damper locking device for underground coal mines according to claim 1, characterized in that: The locking block is an ellipsoid, the tops of the first sliding rod and the second sliding rod are hemispherical, the two sides of the sliding cavity are open and the inner wall is an arc surface that shrinks from the middle to the two sides, the locking block slides and is stuck in the sliding cavity, and when the locking block is not in contact with the first sliding rod and the second sliding rod, both sides of the locking block are located outside the sliding cavity.

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