Super-open-angle non-pressure air door system

Abstract

The utility model discloses a super-open-angle non-pressure air door system, relates to the technical field of coal mine tunnels, and mainly aims to provide an air door which does not use a counterweight interlocking mode, realizes opening and closing of the air door and avoids the defects of the counterweight interlocking mode. According to the main technical scheme, the super-open-angle non-pressure air door system comprises a left air door body and a right air door body, the outer side edge of the left air door body is fixedly connected to a first pin shaft, the first pin shaft is rotationally connected to the left side edge of a door frame, the upper end of the first pin shaft is fixedly connected to a first chain wheel, and the outer side edge of the right air door body is fixedly connected to a second pin shaft; the second pin shaft is rotationally connected to the right side edge of the door frame; the upper end of the second pin shaft is fixedly connected to the second chain wheel; the driving part comprises a splayed cross chain and a hydraulic rod, the splayed cross chain is tensioned between the first chain wheel and the second chain wheel in a transmission mode, one end of the hydraulic rod is hinged to the upper side edge of the door frame, and the other end of the hydraulic rod is hinged to the splayed cross chain.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine tunnels, in particular to an ultra-open angle pressure-free air door system. Background Art

[0002] The damper is the most important ventilation safety facility in the mine ventilation system. In order to ensure the stability and reliability of the mine ventilation system, a large number of damper facilities need to be built underground. The traditional manual pressureless damper with forward and reverse bidirectional opening adopts a counterweight interlocking device.

[0003] The disadvantage of this type of damper is that the two dampers rely on counterweights to close and open, and the sealing strip between the two dampers is easily damaged. The opening force is related to the counterweight. If the counterweight is heavy, it is inconvenient to open, and if the counterweight is light, the damper is not tightly sealed. In places with high wind pressure, it is difficult for one person to open it. After opening, the damper closes quickly, which can easily injure people. In addition, the interlocking device is prone to jamming, which sometimes makes it difficult to open. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides an ultra-open-angle pressure-free damper system, the main purpose of which is to provide a damper that does not use a counterweight interlocking method to achieve opening and closing of the damper, thereby avoiding the disadvantages of the counterweight interlocking method.

[0005] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0006] The embodiment of the utility model provides an ultra-open angle pressure-free damper system, which comprises: a door frame, a damper and a driving part;

[0007] The damper comprises a left damper and a right damper, the outer side of the left damper is fixedly connected to a first pin shaft, the first pin shaft is rotatably connected to the left side of the door frame, the upper end of the first pin shaft is fixedly connected to a first sprocket, the outer side of the right damper is fixedly connected to a second pin shaft, the second pin shaft is rotatably connected to the right side of the door frame, and the upper end of the second pin shaft is fixedly connected to a second sprocket;

[0008] The driving part includes an eight-shaped cross chain and a hydraulic rod. The eight-shaped cross chain is tensioned between the first sprocket and the second sprocket. One end of the hydraulic rod is hinged to the upper side of the door frame, and the other end is hinged to the eight-shaped cross chain.

[0009] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0010] Optionally, it also includes a first spring and a second spring, wherein one end of the first spring is connected to the inner side of the left air door, and the other end is connected to the left side of the door frame, and one end of the second spring is connected to the inner side of the right air door, and the other end is connected to the right side of the door frame.

[0011] Optionally, the inner side edge of the left air door is fixedly connected to the sealing strip.

[0012] Optionally, it also includes a baffle, the door frame includes a front end face and a rear end face, the first pin shaft is rotatably connected to the left side of the front end face of the door frame, the second pin shaft is rotatably connected to the right side of the front end face of the door frame, and the baffle is fixedly connected to the upper middle position of the rear end face of the door frame.

[0013] Optionally, it also includes a first sensor mechanism and a second sensor mechanism, the first sensor mechanism is located in front of the door frame, and the second sensor mechanism is located behind the door frame. The first sensor mechanism and the second sensor mechanism have the same structure and both include an infrared transmitter and an infrared receiver that are relatively arranged.

[0014] Optionally, the inner side edge of the left air door and the inner side edge of the right air door are respectively fixedly connected to the handle.

[0015] Optionally, it also includes a third pin and a fourth pin, the first pin is fixedly connected to the upper end of the outer side edge of the left air door, the third pin is fixedly connected to the lower end of the outer side edge of the left air door, the lower end of the third pin is rotatably connected to the lower end of the left side edge of the door frame, the second pin is fixedly connected to the upper end of the outer side edge of the right air door, the fourth pin is fixedly connected to the lower end of the outer side edge of the right air door, and the lower end of the fourth pin is rotatably connected to the lower end of the right side edge of the door frame.

[0016] By means of the above technical solution, the utility model has at least the following advantages:

[0017] Because the chain adopts a figure-eight cross chain, the angle between the hydraulic rod and the figure-eight cross chain is an acute angle, the hydraulic rod extends or contracts, driving the figure-eight cross chain to transmit, the first sprocket and the second sprocket rotate synchronously, and the rotation directions are opposite to each other, the left damper rotates around the first pin shaft as the center, and the right damper rotates around the second pin shaft as the center, that is, the left damper and the right damper can synchronously move away from or approach the door frame, so as to achieve the purpose of opening or closing the damper.

[0018] The hydraulic rod drives the first sprocket and the second sprocket to reciprocate at a certain angle through the figure-eight cross chain, so that the left air door and the right air door can be opened or closed.

[0019] This system avoids the use of counterweight interlocking method to avoid inconvenience in opening. At the same time, although the chain is set above the damper, the chain is not directly connected to the damper. The chain does not need to bear the weight of the left damper and the right damper. Compared with the traditional chain fixedly connected to the upper end of the damper and driving the damper to move left and right along the slide rail, the chain has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front view of an ultra-open angle pressure-free damper system provided by an embodiment of the utility model;

[0021] Figure 2 A top view of an ultra-open-angle pressure-free damper system provided in an embodiment of the utility model.

[0022] The figure marks in the drawings of the specification include: door frame 1, left air door 2, right air door 3, first pin shaft 4, first sprocket 5, second pin shaft 6, second sprocket 7, figure eight cross chain 8, hydraulic rod 9, first spring 10, second spring 11, sealing strip 12, baffle 13, first sensor mechanism 14, second sensor mechanism 15, handle 16, third pin shaft 17, fourth pin shaft 18, first support seat 19, first support plate 20, second support seat 21, second support plate 22, and tunnel 23. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an ultra-open angle pressure-free damper system, which includes: a door frame 1, a damper and a driving part;

[0026] The damper comprises a left damper 2 and a right damper 3, the outer side of the left damper 2 is fixedly connected to a first pin shaft 4, the first pin shaft 4 is rotatably connected to the left side of the door frame 1, the upper end of the first pin shaft 4 is fixedly connected to a first sprocket 5, the outer side of the right damper 3 is fixedly connected to a second pin shaft 6, the second pin shaft 6 is rotatably connected to the right side of the door frame 1, and the upper end of the second pin shaft 6 is fixedly connected to a second sprocket 7;

[0027] The driving part includes a figure-eight cross chain 8 and a hydraulic rod 9. The figure-eight cross chain 8 is tensioned between the first sprocket 5 and the second sprocket 7. One end of the hydraulic rod 9 is hinged to the upper side of the door frame 1, and the other end is hinged to the figure-eight cross chain 8.

[0028] The working process of the super-opening angle pressure-free damper system is as follows:

[0029] Because the chain adopts a figure-eight cross chain 8, the angle between the hydraulic rod 9 and the figure-eight cross chain 8 is an acute angle, the hydraulic rod 9 extends or contracts, driving the figure-eight cross chain 8 to transmit, the first sprocket 5 and the second sprocket 7 rotate synchronously, and the rotation directions are opposite to each other, the left damper 2 rotates around the first pin shaft 4, and the right damper 3 rotates around the second pin shaft 6, that is, the left damper 2 and the right damper 3 can synchronously move away from or approach the door frame 1, so as to achieve the purpose of opening or closing the damper.

[0030] The hydraulic rod 9 drives the first sprocket 5 and the second sprocket 7 to reciprocate by a certain angle through the figure-eight cross chain 8, so that the left air door 2 and the right air door 3 can be opened or closed.

[0031] This system avoids the use of counterweight interlocking method to avoid inconvenience in opening. At the same time, although the chain is set above the damper, the chain is not directly connected to the damper. The chain does not need to bear the weight of the left damper 2 and the right damper 3. Compared with the traditional chain fixedly connected to the upper end of the damper and driving the damper to move left and right along the slide rail, the chain has a longer service life.

[0032] Specifically, when the hydraulic rod 9 is extended, the left damper 2 and the right damper 3 are synchronously rotated away from the door frame 1, and the dampers are opened; when the hydraulic rod 9 is contracted, the left damper 2 and the right damper 3 are synchronously rotated toward the door frame 1.

[0033] like Figure 1 and Figure 2 As shown, in a specific embodiment, it also includes a first spring 10 and a second spring 11, one end of the first spring 10 is connected to the inner side of the left damper 2, and the other end is connected to the left side of the door frame 1, and one end of the second spring 11 is connected to the inner side of the right damper 3, and the other end is connected to the right side of the door frame 1.

[0034] In this embodiment, specifically, when the hydraulic rod 9 fails due to long-term operation, the first spring 10 pulls the left damper 2 and the second spring 11 pulls the right damper 3, so that the left damper 2 and the right damper 3 rotate synchronously in a direction away from the door frame 1, so that the dampers remain in an open state, and the mine tunnel 23 can remain unobstructed.

[0035] like Figure 1 As shown, in a specific embodiment, the inner side edge of the left damper 2 is fixedly connected to the sealing strip 12 .

[0036] In this embodiment, when the left damper 2 and the right damper 3 are closed to each other, the sealing strip 12 can cover the gap between the left damper 2 and the right damper 3, thereby improving the sealing performance when the dampers are closed.

[0037] like Figure 2 As shown, in a specific embodiment, it also includes a baffle 13, the door frame 1 includes a front end face and a rear end face, the first pin shaft 4 is rotatably connected to the left side of the front end face of the door frame 1, the second pin shaft 6 is rotatably connected to the right side of the front end face of the door frame 1, and the baffle 13 is fixedly connected to the upper middle position of the rear end face of the door frame 1.

[0038] In this embodiment, specifically, when the damper is closed, the left damper 2 and the right damper 3 are embedded in the door frame 1, and the baffle 13 can resist the upper end side of the left damper 2 and the upper end side of the right damper 3 to prevent the left damper 2 and the right damper 3 in the closed state from excessively rotating toward the rear end surface and damaging their mechanical structure.

[0039] like Figure 2 As shown, in a specific embodiment, it also includes a first sensor mechanism 14 and a second sensor mechanism 15, the first sensor mechanism 14 is located in front of the door frame 1, and the second sensor mechanism 15 is located behind the door frame 1, the first sensor mechanism 14 and the second sensor mechanism 15 have the same structure, and both include an infrared transmitter and an infrared receiver arranged relatively.

[0040] In this embodiment, specifically, when the mine car approaches the door frame 1 from the lane 23 in front of the door frame 1 (the damper is in a closed state, and the hydraulic rod 9 is retracted), the mine car travels between the infrared transmitter and the infrared receiver of the first sensor mechanism 14, and the infrared receiver cannot receive the infrared signal sent by the infrared transmitter. The infrared receiver sends an electrical signal to the controller (not shown in the figure), and the controller sends a valve position switching instruction to the electromagnetic two-position valve in the hydraulic oil circuit of the hydraulic rod 9, the hydraulic rod 9 extends, and the damper opens;

[0041] Specifically, when the mine car approaches the door frame 1 from the lane 23 behind the door frame 1 (the damper is in a closed state and the hydraulic rod 9 is retracted), the mine car travels between the infrared transmitter and the infrared receiver of the second sensor mechanism 15. The infrared receiver cannot receive the infrared signal emitted by the infrared transmitter, and the infrared receiver sends an electrical signal to the controller (not shown in the figure). The controller sends a valve position switching instruction to the electromagnetic two-position valve in the hydraulic oil circuit of the hydraulic rod 9, the hydraulic rod 9 extends, and the damper opens.

[0042] like Figure 1 and Figure 2 As shown, in a specific embodiment, the inner side edge of the left air door 2 and the inner side edge of the right air door 3 are respectively fixedly connected to the handle 16.

[0043] In this embodiment, specifically, when a worker repairs the damper, he holds the handle 16 and manually opens the left damper 2 and the right damper 3 .

[0044] In a specific embodiment, it also includes a third pin shaft 17 and a fourth pin shaft 18, the first pin shaft 4 is fixedly connected to the upper end of the outer side edge of the left damper 2, the third pin shaft 17 is fixedly connected to the lower end of the outer side edge of the left damper 2, the lower end of the third pin shaft 17 is rotatably connected to the lower end of the left side edge of the door frame 1, the second pin shaft 6 is fixedly connected to the upper end of the outer side edge of the right damper 3, the fourth pin shaft 18 is fixedly connected to the lower end of the outer side edge of the right damper 3, and the lower end of the fourth pin shaft 18 is rotatably connected to the lower end of the right side edge of the door frame 1.

[0045] In this embodiment, specifically, the first pin shaft 4 and the third pin shaft 17 serve as the rotation axis of the left damper 2 and, at the same time, form upper and lower supports for the left damper 2; the second pin shaft 6 and the fourth pin shaft 18 serve as the rotation axis of the right damper 3 and, at the same time, form upper and lower supports for the right damper 3.

[0046] Specifically, it also includes a first support seat 19, a first support plate 20, a second support seat 21 and a second support plate 22. The first support seat 19 is fixedly connected to the upper end of the left side of the door frame 1, the middle part of the first pin shaft 4 is fixedly connected to the upper end of the outer side of the left air door 2 through the first support plate 20, and the lower end of the first pin shaft 4 is installed on the first support seat 19 through a bearing; the second support seat 21 is fixedly connected to the upper end of the right side of the door frame 1, the middle part of the second pin shaft 6 is fixedly connected to the upper end of the outer side of the right air door 3 through the second support plate 22, and the lower end of the second pin shaft 6 is installed on the second support seat 21 through a bearing.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An ultra-open angle pressure-free damper system, characterized in that: include: Door frame; The damper comprises a left damper and a right damper, the outer side of the left damper is fixedly connected to a first pin shaft, the first pin shaft is rotatably connected to the left side of the door frame, the upper end of the first pin shaft is fixedly connected to a first sprocket, the outer side of the right damper is fixedly connected to a second pin shaft, the second pin shaft is rotatably connected to the right side of the door frame, and the upper end of the second pin shaft is fixedly connected to a second sprocket; The driving part includes a figure-eight cross chain and a hydraulic rod. The figure-eight cross chain is tensioned between the first sprocket and the second sprocket. One end of the hydraulic rod is hinged to the upper side of the door frame, and the other end is hinged to the figure-eight cross chain.

2. The super-open-angle pressure-free damper system according to claim 1, characterized in that: It also includes a first spring and a second spring, wherein one end of the first spring is connected to the inner side of the left air door, and the other end is connected to the left side of the door frame, and one end of the second spring is connected to the inner side of the right air door, and the other end is connected to the right side of the door frame.

3. The super-open-angle pressure-free damper system according to claim 1 or 2, characterized in that: The inner side edge of the left air door is fixedly connected to the sealing strip.

4. The super-open-angle pressure-free damper system according to claim 1 or 2, characterized in that: It also includes a baffle, the door frame includes a front end face and a rear end face, the first pin shaft is rotatably connected to the left side of the front end face of the door frame, the second pin shaft is rotatably connected to the right side of the front end face of the door frame, and the baffle is fixedly connected to the upper middle position of the rear end face of the door frame.

5. The super-open-angle pressure-free damper system according to claim 1 or 2, characterized in that: It also includes a first sensor mechanism and a second sensor mechanism, wherein the first sensor mechanism is located in front of the door frame, and the second sensor mechanism is located behind the door frame. The first sensor mechanism and the second sensor mechanism have the same structure, and both include an infrared transmitter and an infrared receiver that are relatively arranged.

6. The super-open-angle pressure-free damper system according to claim 1 or 2, characterized in that: The inner side edge of the left air door and the inner side edge of the right air door are respectively fixedly connected to the handle.

7. The super-open-angle pressure-free damper system according to claim 1 or 2, characterized in that: It also includes a third pin and a fourth pin, the first pin is fixedly connected to the upper end of the outer side edge of the left air door, the third pin is fixedly connected to the lower end of the outer side edge of the left air door, the lower end of the third pin is rotatably connected to the lower end of the left side edge of the door frame, the second pin is fixedly connected to the upper end of the outer side edge of the right air door, the fourth pin is fixedly connected to the lower end of the outer side edge of the right air door, and the lower end of the fourth pin is rotatably connected to the lower end of the right side edge of the door frame.

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