CN202300463U - Lifting buffering self-reset anti-explosion door of shaft - Google Patents

Abstract

Shaft rising buffer self-resetting explosion-proof door, involving coal mine ventilation safety facilities. The utility model solves the problem that once an explosion occurs in an existing coal mine wind shaft, the explosion-proof door is easily damaged and there are potential safety hazards. The utility model is characterized in that two guide columns are vertically fixed on both sides of the door frame respectively, and the two guide columns are respectively composed of upright rods, nuts and springs, and springs are set outside the two upright rods, and the nuts are installed on the sides of the upright rods. The top is in contact with the spring, and the lower ends of the two vertical rods are respectively fitted with the vertical tubes protruding from both ends of the buffer seat, and the door frame and the buffer seat are connected together with nuts. The door leaf is located above the door frame and installed on the buffer seat; the upper part of the buffer seat is fixed A buffer plate is provided, and a plurality of buffer blocks are respectively arranged on both sides of the buffer plate. The utility model is used in coal mine wind shafts, not only can eliminate the safety hazard of the explosion-proof door, but also has the advantages of simple structure, safety and reliability.

Description

A self-resetting explosion-proof door with rising buffer for shaft

technical field

The utility model relates to coal mine ventilation safety facilities, in particular to a buffer explosion-proof door in which a shaft and a door leaf of a coal mine can rise with a buffer seat.

Background technique

The explosion-proof door of the wind shaft in the existing coal mine ventilation safety facilities is a general steel structure explosion-proof door. Once an underground explosion occurs in a coal mine, the explosion-proof door is easily damaged or flies away from the wellhead. It cannot be reset, which will cause the coal mine to be unable to restore ventilation in a short period of time, so that harmful gases cannot be discharged, causing rescue personnel to lose rescue time, and also seriously endangering the life safety of coal mine workers, resulting in accidents. Disaster spread. For this reason, coal mines urgently need to research and develop more safe explosion-proof doors that can be reset in time for coal mine ventilation shafts.

Contents of the invention

The purpose of this utility model is to overcome the disadvantages of the prior art, to provide a self-resetting explosion-proof door for shaft rising buffer, and to solve the problem that once an explosion occurs in an existing coal mine air shaft, the explosion-proof door is easily damaged and cannot be reset in time, so that the underground ventilation cannot be restored as soon as possible. There are security risks.

The utility model is achieved through the following technical solutions:

Shaft rising buffer self-resetting explosion-proof door, including: a door frame fixed on the wellhead, a door leaf composed of two door panels, the two door panels are respectively connected to the counterweight by wire ropes bypassing the pulley block, and the two counterweights are located at the limit above the mechanism; it is characterized in that: two guide columns are vertically fixed on both sides of the door frame, and the two guide columns are respectively composed of a vertical rod, a nut and a spring, and the two vertical rods are respectively fitted with the Springs, the nuts are installed on the top of the vertical rods to contact the springs, the lower ends of the two vertical rods are respectively fitted with the vertical tubes protruding from the two ends of the buffer seat, and the nuts are used to connect the door frame to the buffer The seats are connected together, the door leaf is located above the door frame and installed on the buffer seat; a buffer plate is fixed on the upper part of the buffer seat, and a plurality of buffer blocks are respectively arranged on both sides of the buffer plate.

The two door panels are respectively hinged on the buffer seat through hinges.

The lower part of the buffer seat is provided with a crossbeam, the crossbeam is a wedge-shaped beam, and the cross-section of the wedge-shaped beam is either an inverted triangle, an inverted trapezoid, or a streamline shape, or any shape that is wide at the top and narrow at the bottom.

The buffer block is either made of elastic material or plastic material.

The limiting mechanism is a fixed support.

Compared with the prior art, the utility model has the following beneficial effects.

1. Guide columns are installed on both sides of the explosion-proof door of the rising buffer shaft of the utility model. The shock wave or high-pressure airflow generated by the explosion makes the buffer seat and the door leaf connected with it rise along the guide column to realize pressure relief; through spring buffering and overcoming gravity. The function achieves buffering.

2. A buffer block is installed on the buffer plate in the explosion-proof door of the rising buffer shaft of the utility model. When two door leaves collide with the buffer plate, the buffer block on the buffer plate absorbs energy to offset the impact force and play a buffering role.

3. The lower part of the buffer seat of the rising buffer shaft explosion-proof door of the utility model is equipped with a wedge-shaped beam, which disperses the force of the shock wave or high-pressure airflow and reduces the force on the beam.

4. The explosion-proof door of the rising buffer shaft of the utility model adopts a counterweight. When the main fan is not working, the counterweight opens the door leaf so that the mine can be ventilated naturally. When the door leaf is opened about 45°, the limit mechanism restricts the counterweight so that the counterweight is not in place. Continue to descend; when the main fan returns to work, the door leaf is automatically attracted by the negative pressure.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a left side view of Fig. 1 .

FIG. 3 is a top view of FIG. 1 .

Below in conjunction with accompanying drawing, the rising buffer shaft explosion-proof door of the present utility model is further described.

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, the self-resetting explosion-proof door for shaft rising and buffering includes: a door frame 1 fixed on the wellhead, a door leaf 2 composed of two door panels 8, and the two door panels 8 are respectively wound by wire ropes. The pulley block is connected with the counterweight 12, and the two counterweights 12 are positioned above the position-limiting mechanism 13; two guide columns 4 are vertically fixed on both sides of the door frame 1, and the two guide columns 4 are respectively controlled by vertical Composed of rod 5, nut 6 and spring 7, the springs 7 are respectively set outside the two vertical rods 5, the nut 6 is installed on the top of the vertical rod 5 and contacts the spring 7, and the two vertical rods The lower ends of the rods 5 are respectively fitted with the vertical tubes protruding from both ends of the buffer seat 3, and the door frame 1 and the buffer seat 3 are connected together with nuts, and the door leaf 2 is located above the door frame 1 and installed on the On the buffer seat 3; a buffer plate 9 is fixed on the upper part of the buffer seat 3, and a plurality of buffer blocks 10 are respectively arranged on both sides of the buffer plate 9.

The two door panels 8 are respectively hinged on the buffer seat 3 through hinges.

The lower part of the buffer seat 3 is provided with a crossbeam 11, and the crossbeam 11 is a wedge-shaped beam. shape.

The buffer block 10 is made of elastic material or plastic material.

The limiting mechanism 13 is a fixed support, and the counterweight 12 is limited by the limiting mechanism 13 .

The two door panels 8 of the rising buffer shaft explosion-proof door of the utility model are opened and rotated by the shock wave or high-pressure airflow generated by the explosion and hit the buffer plate 9 on the buffer seat 3, relying on the buffer block 10 on the buffer plate 9 to absorb energy and offset the impact force , At the same time, the two door panels 8 all impact on the buffer plate 9, so that the buffer seat 3 and the buffer plate 9 are balanced in force. The buffer seat 3 is connected to the door frame 1 with the guide column 4, and the door frame 1 is fixed. The shock wave or high-pressure airflow generated by the explosion makes the buffer seat 3, the door leaf 2 and the buffer plate 9 connected thereto rise along the guide column 4 to realize the discharge. Pressure, through the buffering effect of the spring 7 and the work of its own gravity, the buffering is realized; in addition, the wedge-shaped beam 11 on the buffer seat 3 can disperse the force of the shock wave or high-pressure air flow, and reduce the force on the beam 11. The wave facing surface of the door leaf 2 adopts a conical surface, which is reliable in structure and light in weight, and can weaken the damage to the door leaf 2 caused by shock waves or high-pressure airflow. After the pressure is released, the door leaf 2 is reset to a certain angle under the action of its own weight and then completely reset by negative pressure. The wellhead forms a seal, thereby restoring underground ventilation and protecting the life safety of underground workers.

The counterweight 12 is connected with the door leaf 2 through the pulley block to ensure that the door leaf 2 needs natural ventilation when the main fan is not working. The counterweight 12 opens the door leaf 2 through the pulley block so that the mine can be naturally ventilated. The mechanism 13 limits the counterweight 12 so that the counterweight 12 does not continue to fall; when the main fan is turned on, the door leaf 2 is automatically closed under the self-weight and negative pressure, and then the main fan is completely sucked by the negative pressure, and the counterweight 12 is suspended air.

Claims (5)

1. a vertical shaft rises buffering from the horizontal reset explosion proof door; Comprise: be fixed on the doorframe (1) on the well head; The door leaf of forming by two door-plates (8) (2); Two said door-plates (8) are walked around assembly pulley through wire rope respectively and are connected with counterweight (12), and two said counterweights (12) are positioned at the top of position-limit mechanism (13); It is characterized in that: vertically fixing respectively two leads (4) in the both sides of said doorframe (1); Two said leads (4) are made up of vertical rod (5), nut (6) and spring (7) respectively; The outer said spring (7) that is set with of two said vertical rods (5); The top that said nut (6) is installed in said vertical rod (5) contacts with said spring (7); The column suit that stretch out with buffing pad (3) two ends respectively the lower end of two said vertical rods (5), and with nut said doorframe (1) and said buffing pad (3) are linked together, said door leaf (2) is positioned at the top of said doorframe (1) and is installed on the said buffing pad (3); Said buffing pad (3) top is fixed with buffer board (9), and the both sides of said buffer board (9) are respectively arranged with a plurality of buffer stoppers (10).

2. vertical shaft according to claim 1 rises buffering from the horizontal reset explosion proof door, and it is characterized in that: two said door-plates (8) are hinged on the described buffing pad (3) through hinge respectively.

3. vertical shaft according to claim 1 rises buffering from the horizontal reset explosion proof door, and it is characterized in that: the bottom of said buffing pad (3) is provided with crossbeam (11), and said crossbeam (11) is a tapered beam.

4. vertical shaft according to claim 3 rises buffering from the horizontal reset explosion proof door, and it is characterized in that: the cross section of said tapered beam is a del, or for trapezoidal, or be streamlined, or be arbitrary shape wide at the top and narrow at the bottom.

5. vertical shaft according to claim 1 rises buffering from the horizontal reset explosion proof door, and it is characterized in that: described position-limit mechanism (13) is a fixed support.

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