CN217558387U

CN217558387U - Tunnel positive line protective airtight door

Info

Publication number: CN217558387U
Application number: CN202221117733.XU
Authority: CN
Inventors: 汪向志; 汪辉; 储存
Original assignee: Huanggang Jinsheng Civil Air Defense Engineering Co ltd
Current assignee: Huanggang Jinsheng Civil Air Defense Engineering Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-10-11
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses a tunnel main line protective airtight door, including door frame and door leaf, door leaf right side bottom fixedly connected with hinge, the bottom right side is provided with speed limiting mechanism in the door frame, the front of the wall on door frame right side is provided with buffer gear, speed limiting mechanism includes connecting rod, pivot, gear, ratch, spout and piston cylinder, connecting rod top fixed connection is in the hinge bottom, pivot top fixed connection is in the connecting rod bottom, gear fixed connection is in pivot outer lane middle part, ratch meshes in the gear back, the ratch back in the door frame is seted up to the spout, piston cylinder fixed connection is bottom right side in the door frame. The utility model discloses in, through the speed limit mechanism can the effective control switch door the speed, can reduce the impact force because of the inertia of door leaf brings to combine the better protection of buffer gear to the door leaf, thereby increase of service life.

Description

Tunnel positive line protective airtight door

Technical Field

The utility model relates to a tunnel guard gate technical field especially relates to a tunnel positive line protective airtight door.

Background

In order to resist the air pressure brought by the same train in the tunnel, the internal equipment is intact and is not damaged by the air pressure shock wave. The tunnel protection door has excellent explosion-proof performance, the explosion resistance reaches 0.11Mpa (110 Kpa), and the tunnel protection door also has fireproof performance, and is generally used in railway tunnels, such as transverse channels, repeaters, transformer substations and other tunnels. Is a special purpose door which is set for the safety requirement of blocking the harm of the air pressure shock wave source.

The utility model provides a tunnel positive line protective airtight door for civil air defense engineering, the utility model discloses a tunnel positive line protective airtight door for civil air defense engineering, relates to airtight door technical field, the utility model discloses a sealing door and adjusting device, the surface rotation of sealing door is connected with the door frame, the surface of sealing door is equipped with adjusting device, adjusting device includes the support, support fixed connection is on the surface of sealing door, two spouts have been seted up on the surface of support, two rectangular holes have been seted up on the surface of support, the inner wall sliding connection of rectangular hole has the limiting plate, the one end rotation of limiting plate is connected with the briquetting, the briquetting is close to the fixed surface of sealing door and is connected with the spring, the utility model discloses, solved when the tunnel is used, because of the heavy of the airtight door, take place to cut the rubbing with the wall in tunnel because of inertia when opening easily to the door body causes the damage to the door body to influence the result of use problem of airtight door.

The buffer when the sealing door is opened is provided through the adjusting device in the scheme, but the structure is complex and fine, the sealing door is easy to damage after being used for a long time, the service life is influenced, and therefore, the improvement space is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of short service life existing in the prior art and providing a tunnel positive line protective airtight door.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a tunnel positive line protective airtight door, includes door frame and door leaf, door leaf right side bottom fixedly connected with hinged joint, the bottom right side is provided with speed-limiting mechanism in the door frame, the front of the wall on door frame right side is provided with buffer gear.

The speed limiting mechanism comprises a connecting rod, a rotating shaft, a gear, a toothed bar, a sliding groove and a piston cylinder, wherein the top end of the connecting rod is fixedly connected to the bottom of the hinged joint, the top end of the rotating shaft is fixedly connected to the bottom end of the connecting rod, the gear is fixedly connected to the middle of the outer ring of the rotating shaft, the toothed bar is meshed with the back of the gear, the sliding groove is formed in the back of the toothed bar in the door frame, and the piston cylinder is fixedly connected to the right side of the bottom in the door frame.

Preferably, buffer gear includes telescopic cylinder, spring, first shell fragment, second shell fragment and buffer board, telescopic cylinder fixed connection is positive in the wall left side, spring right-hand member fixed connection is in telescopic cylinder left end, first shell fragment swing joint is in the wall left side, second shell fragment right side middle part butt in first shell fragment left side middle part, buffer board fixed connection is in the spring left side.

Preferably, the bottom end of the rotating shaft is rotatably connected to the inner bottom of the door frame through a bearing, so that the gear is stable and can rotate.

Preferably, the back of the toothed bar is fixedly connected with a sliding block, the toothed bar slides in the sliding groove through the sliding block on the back, the left end of the toothed bar is connected with the piston cylinder in a telescopic mode, the piston cylinder is provided with an air hole and is communicated with the outside, so that the toothed bar stretches stably, and damping can be generated when the inside of the piston cylinder is extruded.

Preferably, retaining rings are fixed on the right side of the buffer plate and the left side of the wall, and the top ends and the bottom ends of the first elastic sheet and the second elastic sheet are respectively connected to the retaining rings in a telescopic mode so that the first elastic sheet and the second elastic sheet are stable and can stretch out and draw back.

Preferably, the telescopic link is stretched out and drawn back to a flexible section of thick bamboo left end, just telescopic link left end fixed connection is in the buffer board right side, the spring cup joints in the telescopic link outside to provide cushioning effect for the buffer board.

Preferably, the telescopic cylinder, the telescopic rod and the spring are provided with four groups and are respectively positioned at four corners of the right side of the buffer plate, so that the buffer plate is stable and balanced in stress.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, through the speed limit mechanism can the effective control switch door the speed, can reduce the impact force because of the inertia of door leaf brings to combine the better protection of buffer gear to the door leaf, thereby increase of service life.

2. The utility model discloses in, because speed limiting mechanism can make the speed of opening the door reduce gradually to make inertia reduce gradually, then the door leaf opens the back impact force of applying to buffer gear and can weaken gradually, make buffer gear's life can be more of a specified duration.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a perspective view of the structure of FIG. 1 taken at the cut-away;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

fig. 4 is a schematic view of the front internal structure of the middle buffering mechanism of the present invention.

Illustration of the drawings:

1. a door frame; 2. a door leaf; 3. a hinge joint; 4. a speed limiting mechanism; 401. a connecting rod; 402. a rotating shaft; 403. a gear; 404. a rack bar; 405. a chute; 406. a piston cylinder; 5. a buffer mechanism; 501. a telescopic cylinder; 502. a spring; 503. a first spring plate; 504. a second elastic sheet; 505. a buffer plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present application provides a technical solution: a tunnel positive line protective airtight door comprises a door frame 1 and a door leaf 2, the bottom of the right side of the door leaf 2 is fixedly connected with a hinge joint 3, the right side of the bottom in the door frame 1 is provided with a speed limiting mechanism 4, the speed limiting mechanism 4 comprises a connecting rod 401, a rotating shaft 402, a gear 403, a toothed bar 404, a sliding groove 405 and a piston cylinder 406, the top end of the connecting rod 401 is fixedly connected with the bottom end of the connecting rod 401, the gear 403 is fixedly connected with the middle part of the outer ring of the rotating shaft 402, the bottom end of the rotating shaft 402 is rotatably connected with the bottom in the door frame 1 through a bearing so that the gear 403 is stable and can rotate, the toothed bar 404 is meshed with the back surface of the gear 403, the sliding groove 405 is arranged on the back surface of the toothed bar 404 in the door frame 1, the piston cylinder 406 is fixedly connected with the right side of the bottom in the door frame 1, the sliding block 404 slides in the sliding groove 405 through the sliding block on the back surface, and the left end of the toothed bar 404 is telescopically connected with the piston cylinder 406, the piston cylinder 406 is provided with an air hole and communicated with the outside, so that the toothed bar 404 can stretch stably, and the inside of the piston cylinder 406 can generate damping when being squeezed, the front surface of the wall on the right side of the door frame 1 is provided with a buffer mechanism 5, the buffer mechanism 5 comprises a telescopic cylinder 501, a spring 502, a first elastic sheet 503, a second elastic sheet 504 and a buffer plate 505, the telescopic cylinder 501 is fixedly connected with the front surface on the left side of the wall, the right end of the spring 502 is fixedly connected with the left end of the telescopic cylinder 501, the first elastic sheet 503 is movably connected with the left side of the wall, the middle part on the right side of the second elastic sheet 504 is abutted against the middle part on the left side of the first elastic sheet 503, the buffer plate 505 is fixedly connected with the left side of the spring 502, the right side of the buffer plate 505 and the left side of the wall are both fixedly provided with retaining rings, and the top ends and the bottom ends of the first elastic sheet 503 and the second elastic sheet 504 are respectively connected with the retaining rings in a telescopic manner, so that the first elastic sheet 503 and the second elastic sheet 504 can stretch stably and stretch out, the flexible telescopic link that has of a flexible section of thick bamboo 501 left end, and telescopic link left end fixed connection in buffer board 505 right side, spring 502 cup joints in the telescopic link outside, so that provide cushioning effect for buffer board 505, a flexible section of thick bamboo 501, telescopic link and spring 502 are provided with four groups altogether and are located buffer board 505 right side four corners respectively, so that buffer board 505 is stable and the atress is balanced, through the speed that speed limit mechanism 4 can the effective control switch door, can reduce the impact force because of the inertia of door leaf 2 brings, thereby combine 5 better protection of buffer mechanism to door leaf 2, thereby increase of service life.

In the actual operation process, when the device is used, when the door leaf 2 is opened, the hinge 3 is driven to rotate, the rotating shaft 402 is driven to rotate through the connecting rod 401, the gear 403 is driven to rotate, the meshed toothed rod 404 is driven to move leftwards and retract into the piston cylinder 406, when the opening speed of the door leaf 2 is too high, gas in the piston cylinder 406 cannot be discharged through the air hole in time, the pressure in the piston cylinder 406 is increased, resistance is applied to reduce the opening speed of the door leaf 2, the opening speed of the door leaf 2 can be controlled, the door closing speed can be controlled to protect the door frame 1, when the door leaf 2 is completely opened, the door leaf 2 abuts against the buffer plate 505 to move rightwards, the spring 502 is compressed through the telescopic rod, damping force is generated, and the first elastic sheet 503 is extruded by the second elastic sheet 504, damping force can be generated, and the inertia impact force of the door leaf 2 is buffered.

Claims

1. The utility model provides a tunnel positive line protective airtight door, includes door frame (1) and door leaf (2), its characterized in that: the bottom of the right side of the door leaf (2) is fixedly connected with a hinged joint (3), the right side of the bottom in the door frame (1) is provided with a speed limiting mechanism (4), and the front side of the wall on the right side of the door frame (1) is provided with a buffer mechanism (5);

the speed limiting mechanism (4) comprises a connecting rod (401), a rotating shaft (402), a gear (403), a toothed bar (404), a sliding groove (405) and a piston cylinder (406), wherein the top end of the connecting rod (401) is fixedly connected to the bottom of the hinge joint (3), the top end of the rotating shaft (402) is fixedly connected to the bottom end of the connecting rod (401), the gear (403) is fixedly connected to the middle of the outer ring of the rotating shaft (402), the toothed bar (404) is meshed with the back surface of the gear (403), the sliding groove (405) is arranged on the back surface of the toothed bar (404) in the door frame (1), and the piston cylinder (406) is fixedly connected to the right side of the bottom in the door frame (1).

2. The tunnel positive line protective airtight door of claim 1, characterized in that: buffer gear (5) are including a flexible section of thick bamboo (501), spring (502), first shell fragment (503), second shell fragment (504) and buffer board (505), flexible section of thick bamboo (501) fixed connection is positive on the left of the wall, spring (502) right-hand member fixed connection is in flexible section of thick bamboo (501) left end, first shell fragment (503) swing joint is in the wall left side, second shell fragment (504) right side middle part butt in first shell fragment (503) left side middle part, buffer board (505) fixed connection is in spring (502) left side.

3. The tunnel positive line protective airtight door according to claim 1, characterized in that: the bottom end of the rotating shaft (402) is rotatably connected to the inner bottom of the door frame (1) through a bearing.

4. The tunnel positive line protective airtight door according to claim 1, characterized in that: the back of the toothed bar (404) is fixedly connected with a sliding block, the toothed bar (404) slides in the sliding groove (405) through the sliding block on the back, the left end of the toothed bar (404) is connected with the piston cylinder (406) in a telescopic mode, and the piston cylinder (406) is provided with an air hole and is communicated with the outside.

5. The tunnel positive line protective airtight door according to claim 2, characterized in that: retaining rings are fixed on the right side of the buffer plate (505) and the left side of the wall, and the top ends and the bottom ends of the first elastic sheet (503) and the second elastic sheet (504) are respectively connected with the retaining rings in a telescopic mode.

6. The tunnel positive line protective airtight door according to claim 2, characterized in that: the left end of the telescopic cylinder (501) is provided with a telescopic rod in a telescopic mode, the left end of the telescopic rod is fixedly connected to the right side of the buffer plate (505), and the spring (502) is sleeved outside the telescopic rod.

7. The tunnel positive line protective airtight door of claim 6, characterized in that: the telescopic cylinders (501), the telescopic rods and the springs (502) are provided with four groups and are respectively positioned at four corners of the right side of the buffer plate (505).