Novel mechanical snap ring type air door interlocking device

Abstract

The utility model discloses a novel mechanical snap ring type air door interlocking device which comprises a first air door, a second air door, connecting baffles and an air door interlocking mechanism, and the connecting baffles are installed on the first air door and the second air door respectively. Door frames of the first air door and the second air door are each provided with one air door interlocking mechanism, and the air door interlocking mechanism at the position of the first air door is connected with the second air door through an interlocking rope and a telescopic spring; and the air door interlocking mechanism at the second air door is connected with the first air door through another interlocking rope and a telescopic spring. When one air door is opened, the other air door is completely in a locked state and cannot be opened, so that the air flow of a roadway is isolated or the air quantity passing through the roadway is limited.

Description

Technical Field

[0001] This utility model relates to a damper interlocking technology, and in particular to a novel mechanical snap ring damper interlocking device. Background Technology

[0002] Air doors are the most important ventilation facilities in underground coal mines. Their main functions are: to isolate airflow in roadways or limit the amount of air passing through roadways to ensure the airflow requirements of locations requiring ventilation; and to allow personnel and vehicles to pass through. Article 144 of the "Coal Mine Safety Regulations" stipulates that a permanent ventilation wall must be built in each connecting roadway between the intake and return air shafts and between the main intake and return airways; connecting roadways that need to be used must be equipped with two interlocking forward air doors and two reverse air doors.

[0003] Currently, the commonly used interlocking device for ventilation doors in underground mines is the sleeve type. Its principle is mainly to fix the interlocking rope connecting two ventilation doors to the side wall of the roadway, and set a limiting sleeve in the middle of the ventilation door, or set a counterweight. When one ventilation door is opened, the other ventilation door is restricted from opening at the same time by the wire rope and the limiting device. This type of interlocking device is easily affected by roadway stress and wire rope tension, resulting in problems such as the limiting sleeve not working or the interlocking shifting, being damaged, or failing, which in turn affects the stability and reliability of the entire ventilation system.

[0004] Furthermore, as the mining depth increases, the roadway deforms severely, and the original interlocking device is easily deformed and damaged, causing the air doors to open simultaneously, which in turn damages the original interlocking device and causes problems such as the air doors failing to interlock and resulting in airflow turbulence. Currently, there are no publicly reported cases of this type of snap ring air door interlocking device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of mechanical snap ring type damper interlocking device that is reasonably designed, highly sensitive and easy to maintain.

[0006] The technical solution of this utility model is:

[0007] A novel mechanical snap-ring type damper interlocking device includes a first damper, a second damper, a connecting baffle, and a damper interlocking mechanism. A connecting baffle is installed on each of the first and second dampers. A damper interlocking mechanism is installed on the door frames of both the first and second dampers. The damper interlocking mechanism at the first damper is connected to the second damper via an interlocking rope and a telescopic spring. The damper interlocking mechanism at the second damper is connected to the first damper via another interlocking rope and a telescopic spring.

[0008] Furthermore: the damper interlocking mechanism includes a C-shaped retaining ring, a base plate, and a sleeve. The sleeve is disposed on the base plate, the vertical ring rod of the C-shaped retaining ring is fitted inside the sleeve, the lower horizontal ring rod of the C-shaped retaining ring is connected to a return spring, and the upper horizontal ring rod of the C-shaped retaining ring is connected to one end of the interlocking rope.

[0009] Furthermore, a pad is provided between the base plate and the sleeve. There are two pads, located at the upper and lower parts of the base plate, respectively. The base plate is connected to the door frame by fixing bolts.

[0010] Furthermore: a pulley is provided at the bend of the interlocking rope, one end of the interlocking rope is connected to one end of the telescopic spring, and the other end of the telescopic spring is connected to the first or second air damper.

[0011] The beneficial effects of this utility model are:

[0012] 1. In this utility model, when one air door is opened, the other air door is completely locked and cannot be opened, thus ensuring that the airflow in the tunnel is isolated or the air volume passing through the tunnel is restricted.

[0013] 2. This utility model is equipped with a sleeve, and the vertical ring rod of the C-shaped retaining ring can slide up and down in the sleeve, providing good guidance and preventing deviation.

[0014] 3. This utility model uses the combined action of a telescopic spring and a return spring, which can avoid rigid collisions and achieve stretching and return, resulting in good performance.

[0015] The four utility models are reasonably designed, highly sensitive, and easy to maintain. They use bearings as the positioning connection for the screw handwheel, making them flexible and easy to operate, easy to promote and implement, and with good economic benefits. Attached Figure Description

[0016] Figure 1 This is a structural diagram showing the usage state of a novel mechanical snap ring type damper interlocking device.

[0017] Figure 2 for Figure 1 The diagram shows the locking state structure of a novel mechanical snap ring type damper interlocking device.

[0018] Figure 3 for Figure 1 The diagram shows the unlocking state structure of a novel mechanical snap ring type damper interlocking device. Detailed Implementation

[0019] Example 1: See Figure 1 -- Figure 3In the diagram, 1-first air damper, 2-second air damper, 3-base plate, 4-pad plate, 5-sleeve, 6-C-type retaining ring, 7-interlocking rope, 8-fixing bolt, 9-connecting baffle, 10-reset spring, 11-fixing bolt.

[0020] A novel mechanical snap-ring type damper interlocking device includes a first damper 1, a second damper 2, a connecting baffle 9, and a damper interlocking mechanism. A connecting baffle 9 is installed on both the first damper 1 and the second damper 2. A damper interlocking mechanism is installed on the door frame of both the first damper 1 and the second damper 2. The damper interlocking mechanism at the first damper is connected to the second damper 2 via an interlocking rope 7 and a telescopic spring. The damper interlocking mechanism at the second damper is connected to the first damper 1 via another interlocking rope 7 and a telescopic spring.

[0021] Preferred solution: The damper interlocking mechanism includes a C-shaped retaining ring 6, a base plate 3, and a sleeve 5. The sleeve 5 is mounted on the base plate 3. The vertical ring rod of the C-shaped retaining ring 6 is fitted inside the sleeve 5. The lower horizontal ring rod of the C-shaped retaining ring 6 is connected to one end of the return spring 10. The other end of the return spring 10 is connected to the lower part of the door frame. The upper horizontal ring rod of the C-shaped retaining ring 6 is connected to one end of the interlocking rope 7.

[0022] Preferred solution: A pad 4 is provided between the base plate 3 and the sleeve 5. There are two pads 4, located at the top and bottom of the base plate 3 respectively. The base plate 4 is connected to the door frame by fixing bolts 8.

[0023] Preferred solution: A pulley is provided at the bend of the interlocking rope 7, and one end of the interlocking rope 7 is connected to the telescopic spring, while the other end of the telescopic spring is connected to the first or second air door.

[0024] One end of the connecting baffle 9 is connected to the damper, and the other end is placed at the C-shaped opening of the base plate 3. When the other damper is opened, the C-shaped retaining ring 6 is pulled up to make the damper in a locked state. When both dampers are closed, the retaining ring is in an unlocked state.

[0025] In use, the first air door 1 and the second air door 2 can be fully opened without being rigidly restricted by the interlocking rope 7. When the second air door 2 is opened, the interlocking rope 7 of the air door interlocking mechanism at the first air door is pulled. At this time, the return spring 10 is stretched, and the interlocking rope 7 drives the C-shaped retaining ring 6 to move upward. The C-shaped retaining ring 6 blocks the connecting baffle 9 of the first air door 1, preventing it from opening (as shown in Figure 2). When the second air door 2 is closed, the interlocking rope 7 and the C-shaped retaining ring 6 are reset, and the connecting baffle 9 of the first air door 1 is in the open state (as shown in Figure 3). The first air door 1 is in the openable state. Similarly, when the first air door 1 is opened, the interlocking rope 7 of the air door interlocking mechanism at the second air door blocks the second air door 2, ensuring that while one door is opened, the other door is locked.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications made based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A novel mechanical snap-ring type damper interlocking device, comprising a first damper, a second damper, a connecting baffle, and a damper interlocking mechanism, characterized in that: Each of the first and second air doors is equipped with a connecting baffle, and each of the first and second air doors is equipped with an air door interlocking mechanism. The air door interlocking mechanism at the first air door is connected to the second air door via an interlocking rope and a telescopic spring, and the air door interlocking mechanism at the second air door is connected to the first air door via another interlocking rope and a telescopic spring.

2. The novel mechanical snap ring type damper interlocking device according to claim 1, characterized in that: The damper interlocking mechanism includes a C-shaped retaining ring, a base plate, and a sleeve. The sleeve is mounted on the base plate. The vertical ring rod of the C-shaped retaining ring is fitted inside the sleeve. The lower horizontal ring rod of the C-shaped retaining ring is connected to a return spring. The upper horizontal ring rod of the C-shaped retaining ring is connected to one end of an interlocking rope.

3. The novel mechanical snap ring type damper interlocking device according to claim 2, characterized in that: A pad is provided between the base plate and the sleeve. There are two pads, located at the top and bottom of the base plate respectively. The base plate is connected to the door frame by fixing bolts.

4. The novel mechanical snap ring type damper interlocking device according to claim 1, characterized in that: A pulley is provided at the bend of the interlocking rope. One end of the interlocking rope is connected to one end of the telescopic spring, and the other end of the telescopic spring is connected to the first or second air door.

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