CN211258363U

CN211258363U - Concrete protective airtight door

Info

Publication number: CN211258363U
Application number: CN201922032584.1U
Authority: CN
Inventors: 周海荣; 江宏明
Original assignee: Shanghai Kaisite Civil Defense Equipment Co ltd
Current assignee: Shanghai Kaisite Civil Defense Equipment Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-08-14
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to a concrete protection airtight door, it is including the wall body and one side and the wall body articulated door plant of seting up the gate, and the outside that the wall body is located the gate is provided with the door frame, and the embedded groove that supplies the door frame embedding is seted up to the door plant, is provided with expanding spring in the embedded groove, and expanding spring keeps away from the one end of embedded groove and is connected with the butt board, and the butt board is provided with the flange towards one side of expanding spring, and the flange leaves the interval with the cell wall that the butt board was kept away from to. When the door plant received the shock wave, butt plate compression expanding spring, expanding spring can provide the cushioning effect, reduces the vibration frequency of door plant, avoids the door plant to take place to break.

Description

Concrete protective airtight door

Technical Field

The utility model belongs to the technical field of the technique of guard gate and specifically relates to a concrete protection airtight door is related to.

Background

In order to prevent nuclear explosion shock waves and conventional weapon impact fragments from entering the civil air defense engineering, improve the viability of the civil air defense engineering and meet the use requirements of the civil air defense engineering, a protective airtight door needs to be arranged at the mouth of the civil air defense engineering.

At present, as disclosed in chinese patent utility model patent application publication No. CN204283137U, a reinforced concrete protective airtight door includes a door frame and a door leaf, the door leaf is internally provided with a reinforcing mesh in a criss-cross manner, concrete is filled in the door leaf, two vertically arranged pre-arranged lock sleeves are arranged on the vertical side in the door leaf, a lock is arranged in each lock sleeve, each lock comprises a handle, a rotating shaft and a lock plunger, the rotating shaft is rotatably fitted in each lock sleeve, the handle is connected with the outer end of the rotating shaft, the lock plunger is connected with the inner end of the rotating shaft, and the door frame is provided with a lock hole matched and locked; the door leaf is fixed on the door frame through the hinge mechanism. The reinforcing mesh is arranged inside the door leaf, and then the concrete is formed, so that the door leaf is firm and high in safety; the hinge mechanism is adopted to be connected with the door frame, so that the connection performance is good and the service life is long.

The above prior art solutions have the following drawbacks: the guard gate of this structure has better connection and intensity, but when the war time guard gate need bear instantaneous high acceleration, the wide vibration frequency variation range's of taking place explosive shock, and the door receives shock wave effect and the mutual collision vibration of door wall, and the guard gate that experiences violent vibration for a long time takes place easily to break, reduces life.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a concrete protection airtight door, it can provide the shock attenuation effect, reduces the frequency of the violent vibration of guard gate, prolongs the life of guard gate.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a concrete protection airtight door, is including the wall body and one side and the wall body articulated door plant of seting up the gate, the outside that the wall body is located the gate is provided with the door frame, the embedded groove with supplying the door frame embedding is seted up to the door plant, be provided with expanding spring in the embedded groove, the one end that expanding spring kept away from the embedded groove is connected with the butt plate, the butt plate is provided with the flange towards one side of expanding spring, the flange leaves the interval with the cell wall that the butt plate was kept away from to the embedded groove.

Through adopting above-mentioned technical scheme, the door plant is closed to be located the gate position at the wall body, and the mutual gomphosis of embedded groove and door frame, when the door plant received great shock wave, the door frame extrusion butt joint board, butt joint board compression expanding spring, the flange is injectd the displacement of butt joint board, and the expanding spring shrink provides reaction force, can effectively cushion the collision of door plant and wall body, reduces the vibration frequency of door plant, avoids the door plant to experience violent vibration for a long time to take place to break easily, reduces its life.

The utility model discloses further set up to: the door plant is located the outside of embedded groove and has seted up a plurality of installing ports, be provided with the shock attenuation post in the installing port, the lateral wall that the installing port was kept away from to the shock attenuation post is connected with supporting spring, the one end that supporting spring kept away from the shock attenuation post is connected with the circle and supports the piece.

Through adopting above-mentioned technical scheme, the door plant is closed when the gate is put, and the circle supports the mutual butt of lateral wall of piece and wall body, and when the door plant received great shock wave, the wall body lateral wall supports the piece with the circle and extrudees each other, and the circle supports piece compression supporting spring to make supporting spring provide cushioning effect, further reduce the vibration frequency of door plant, avoid the door plant to take place violent vibration, with wall body collision each other, can prolong the life of door plant.

The utility model discloses further set up to: the damping column is internally provided with an air cavity, the round abutting piece is fixedly provided with a push rod, the damping column is provided with a through hole communicated with the air cavity, one end, far away from the round abutting piece, of the push rod penetrates through the through hole and stretches into the air cavity to be connected with a rubber piston, the edge of the rubber piston is mutually abutted against the side wall of the air cavity, and the rubber piston is provided with a cross-shaped seam for a small amount of air to pass through.

By adopting the technical scheme, when the circular abutting piece is subjected to extrusion acting force, the circular abutting piece pushes the push rod to support the rubber piston to move towards the inner side of the air cavity, the rubber piston divides the interior of the air cavity into two spaces in which air is not communicated, the rubber piston moves to compress the air on one side of the air cavity, the air pressures of the two spaces in the air cavity are different to generate pressure difference, the air pressure generates acting force on the rubber piston, the acting force is opposite to the moving direction of the rubber piston, a small amount of air can flow in the spaces on the two sides of the rubber piston through the cross seam to balance the pressure, when the rubber piston is subjected to larger pushing force by the push rod, the rubber piston can slowly move according to the flow of the air through the; after the door panel stops vibrating, the rubber piston can be reset to the original position by stretching the supporting spring.

The utility model discloses further set up to: the side wall of the through hole is mutually abutted with the side wall of the push rod.

Through adopting above-mentioned technical scheme, fenestrate lateral wall is injectd the moving direction of push rod, avoids the push rod to remove the in-process and takes place the skew to make the inside wall of rubber piston and air cavity produce the clearance, gas can follow clearance department and pass through, reduces the shock attenuation effect of air cavity to the door plant.

The utility model discloses further set up to: and a sealing sleeve is fixedly arranged on the side wall of the through hole.

Through adopting above-mentioned technical scheme, the seal cover provides the seal effect to the hookup location between perforation and the push rod, removes the in-process at rubber piston, can improve the air pressure difference that is located the space of rubber piston both sides in the air cavity, improves buffering effect, avoids inside external gas gets into the air cavity from perforation and the hookup location of push rod, and balanced air cavity is located the air pressure of rubber piston both sides air.

The utility model discloses further set up to: the both sides of shock attenuation post all are provided with the engaging lug, the spread groove of intercommunication installing port is seted up to the door plant, the engaging lug is located the inside of spread groove, the engaging lug passes through fastener reciprocal anchorage with the door plant.

Through adopting above-mentioned technical scheme, place the shock attenuation post inside the installing port, the engaging lug is placed in the inside of spread groove, utilizes the fastener to fix the engaging lug and door plant reciprocal anchorage to fix the shock attenuation post inside the door plant.

The utility model discloses further set up to: and a rubber pad is arranged on one surface of the round abutting piece, which faces away from the shock absorption column.

Through adopting above-mentioned technical scheme, circle is supported piece and wall body direct collision and is produced defectively easily, and the rubber pad is avoided circle to support piece and wall body direct contact, provides cushioning effect, prolongs the life of circle to support the piece.

To sum up, the utility model discloses a beneficial technological effect does:

1. the door plate is closed at the position, located at the door opening, of the wall body, the embedded groove is embedded with the door frame, when the door plate is subjected to a large shock wave, the door plate vibrates, the door frame extrudes the abutting plate, the abutting plate compresses the telescopic spring, the telescopic spring contracts to provide a reaction force, the collision between the door plate and the wall body can be effectively buffered, the vibration frequency of the door plate is reduced, the door plate is prevented from being subjected to severe vibration for a long time, so that the door plate is easy to break, and the service life is;

2. when the door plate is closed at the door opening position, the round abutting pieces are abutted with the side wall of the wall body, when the door plate is subjected to a large shock wave, the side wall of the wall body is extruded with the round abutting pieces, and the round abutting pieces compress the supporting spring, so that the supporting spring provides a buffering effect, the vibration frequency of the door plate is further reduced, the door plate is prevented from being violently vibrated and colliding with the wall body, and the service life of the door plate can be prolonged;

3. when the circular supporting sheet receives extrusion acting force, the circular supporting sheet pushes the push rod to support the rubber piston to move towards the inner side of the air cavity, the rubber piston divides the inside of the air cavity into two spaces in which air does not flow, the rubber piston moves to compress the air on one side of the air cavity, different air pressures of the two side spaces in the air cavity generate pressure differences, the air pressures generate acting force on the rubber piston, the acting force is opposite to the moving direction of the rubber piston, a small amount of air can flow in the two side spaces of the rubber piston through the cross seam to balance the pressure, when the rubber piston receives larger pushing force of the push rod, the air can slowly move according to the flowing of the air passing through the cross seam, and.

Drawings

Fig. 1 is a schematic view of the overall construction of a concrete containment door;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a concrete containment door;

FIG. 4 is an enlarged partial schematic view of portion A of FIG. 3;

fig. 5 is a schematic view of the structure of the rubber piston.

In the figure, 1, a wall body; 11. a doorway; 12. a door frame; 121. an installation port; 122. connecting grooves; 123. a fastener; 2. a door panel; 21. a limiting frame; 211. a groove is embedded; 212. a tension spring; 22. a reinforced concrete layer; 23. wrapping a steel plate; 3. a shock-absorbing post; 31. an air cavity; 32. a rubber piston; 321. cross-shaped seams; 33. a push rod; 34. perforating; 341. sealing sleeves; 35. a support spring; 36. a round abutting sheet; 361. a rubber pad; 37. connecting lugs; 4. a butt joint plate; 41. a flange.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and fig. 3, for the utility model discloses a concrete protection airtight door, including wall body 1 and door plant 2, one side and the wall body 1 of door plant 2 are articulated each other, and door plant 2 includes spacing frame 21, reinforced concrete layer 22 and outsourcing steel sheet 23, and reinforced concrete layer 22 fixed mounting is in the inboard of spacing frame 21, and outsourcing steel sheet 23 is fixed in spacing frame 21 inboard and is located reinforced concrete layer 22's both sides. A doorway 11 is formed in the wall body 1, a door frame 12 is fixed on the wall body 1 facing the side wall of the door panel 2 and located at the edge of the doorway 11, and an embedded groove 211 for embedding the door frame 12 is formed in the door panel 2. When the door panel 2 is closed on the side wall of the wall body 1, the door frame 12 is embedded with the embedding groove 211.

The inner bottom surface of the embedded groove 211 is fixed with a telescopic spring 212, one end of the telescopic spring 212 far away from the embedded groove 211 is connected with a butt plate 4, and the outline of the butt plate 4 is consistent with the outline of the section of the embedded groove 211. Flanges 41 extend vertically from both sides of the abutting plate 4 toward the side of the extension spring 212. When the extension spring 212 is in a natural state, a side of the flange 41 away from the abutting plate 4 is spaced from the bottom of the fitting groove 211. When the door panel 2 is closed on the side wall of the wall body 1, the abutting plate 4 and the door frame 12 abut against each other, and the extension spring 212 is in a natural state. When door plant 2 received great shock wave, butt plate 4 extrusion expanding spring 212, flange 41 and the tank bottom looks butt of embedded groove 211, inject butt plate 4's displacement, and expanding spring 212 provides the cushioning effect, reduces door plant 2's vibration frequency, prolongs door plant 2's life.

Referring to fig. 1 and 2, a plurality of installing openings 121 have been seted up towards the one side hoop of wall body 1 to spacing frame 21, installing opening 121 is located the outside of embedded groove 211, install shock absorber post 3 in installing opening 121, the both sides of shock absorber post 3 are extended there is engaging lug 37, spacing frame 21 has all seted up spread groove 122 towards the both sides that 1 one side of wall body just is located installing opening 121, spread groove 122 communicates with each other with installing opening 121, engaging lug 37 is located inside spread groove 122, engaging lug 37 and spacing frame 21 pass through fastener 123 reciprocal anchorage, fastener 123 sets up to the countersunk head bolt.

Referring to fig. 1 and 4, a support spring 35 is fixed on a surface of the shock absorbing column 3 facing away from the mounting opening 121, one end of the support spring 35 away from the shock absorbing column 3 is connected with a circular abutting piece 36, and the circular abutting piece 36 is parallel to a plate surface of the door frame 12 facing the wall 1. The door panel 2 is closed on the side wall of the wall body 1, the circular abutting sheets 36 are abutted with the side wall of the wall body 1, and the supporting spring 35 is in a natural state. When door plant 2 receives great shock wave, wall body 1 extrusion circle is supported piece 36 to compression supporting spring 35, supporting spring 35 can provide the cushioning effect, further reduces door plant 2's vibration frequency, avoids door plant 22 to take place violent vibration.

A rubber pad 361 is fixed on the side of the circular abutting piece 36, which faces away from the shock absorption column 3, and the rubber pad 361 prevents the circular abutting piece 36 from directly contacting and colliding with the side wall of the wall body 1, so that a buffering effect is provided, the occurrence of collision defects of the circular abutting piece 36 is reduced, and the service life of the circular abutting piece 36 is prolonged.

Referring to fig. 4 and 5, an air chamber 31 is formed inside the shock-absorbing column 3, a through hole 34 is formed in a surface of the shock-absorbing column 3 opposite to the mounting opening 121, a cylindrical push rod 33 penetrates through the through hole 34, one end of the push rod 33 far away from the shock-absorbing column 3 is fixed to a circular abutting piece 36, and a support spring 35 is sleeved outside the push rod 33. The push rod 33 is fixed with the rubber piston 32 at the one end of air cavity 31, and the edge of rubber piston 32 supports tightly each other with the lateral wall of air cavity 31, cuts apart into two not circulating cavities of gas with air cavity 31, and the both sides of rubber piston 32 all cut cross seam 321, can supply a small amount of gas to pass through.

When the supporting spring 35 is in an extended state, the rubber piston 32 and the side wall of the air chamber 31 near the circular abutting piece 36 abut against each other. When the circular abutting piece 36 is squeezed, the push rod 33 is pushed, the push rod 33 enables the rubber piston 32 to move towards the inner side of the air cavity 31, the rubber piston 32 moves to compress air on the inner side of the air cavity 31, air pressure on two sides of the rubber piston 32 in the air cavity 31 is different, and the compressed air provides reaction force for the rubber piston 32 to block the movement of the rubber piston 32. A small amount of gas on the inner side of the gas cavity 31 can leak out of the gas cavity 31 on one side of the rubber piston 32 facing the push rod 33 from the cross-shaped seam 321, and when the rubber piston 32 is subjected to large thrust of the push rod 33, the rubber piston can slowly move towards the inner side direction of the gas cavity 31, so that the damping effect of the damping column 3 is further enhanced, and the vibration frequency of the door panel 2 is reduced. When the circular abutting sheet 36 is not stressed, the rubber piston 32 can be reset to the original position by the support spring 35 being extended.

The diameter of perforation 34 is equal with the diameter of push rod 33, and the lateral wall of perforation 34 and the mutual butt of the lateral wall of push rod 33 carry on spacingly to the removal of push rod 33, avoid push rod 33 to remove the in-process and take place the skew to make rubber piston 32 and the lateral wall of air cavity 31 have the clearance, make gas can pass from the clearance, reduce rubber piston 32's shock attenuation effect. A sealing sleeve 341 is fixed on the side wall of the through hole 34 facing the push rod 33, the sealing sleeve 341 seals the contact area between the through hole 34 and the push rod 33, so that external air is prevented from entering the air cavity 31, the pressure difference of air on two sides of the rubber piston 32 in the air cavity 31 is improved, and the damping effect is improved.

The implementation principle of the embodiment is as follows: the door panel 2 is closed at the position of the doorway 11 of the wall body 1, and the insertion groove 211 is engaged with the door frame 12. When door plant 2 received great shock wave, door frame 12 extrudees each other with butt plate 4, and expanding spring 212 contracts, and flange 41 and the mutual butt of the tank bottom of embedded groove 211 are injectd the displacement of butt plate 4, and expanding spring 212 provides the cushioning effect, reduces door plant 2's vibration frequency. When the door panel 2 vibrates, the wall body 1 and the circular abutting piece 36 abut against each other, the circular abutting piece 36 pushes the push rod 33 and the rubber piston 32 to move, the rubber piston 32 divides the air cavity 31 into two spaces where air is not circulated, the rubber piston 32 moves to compress the air in the space on one side, so that the air pressures on the two sides of the rubber piston 32 in the air cavity 31 are different to generate pressure difference, the air pressures in the spaces on the two sides generate acting force on the rubber piston 32, the acting force is opposite to the moving direction of the rubber piston 32, and a small amount of air can balance the pressures on the two sides of the rubber piston 32 in the air cavity 31 through the cross-shaped seam 321. According to the gas that cross seam 321 flowed through, rubber piston 32 can slowly remove when receiving the great thrust of push rod 33, and supporting spring 35 contracts simultaneously and can provide the cushioning effect, further strengthens the cushioning effect to door plant 2, avoids door plant 2 to take place to break.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a concrete protective airtight door which characterized in that: including wall body (1) and one side and wall body (1) articulated door plant (2) of seting up gate (11), the outside that wall body (1) is located gate (11) is provided with door frame (12), embedded groove (211) that supply door frame (12) embedding are seted up in door plant (2), be provided with expanding spring (212) in embedded groove (211), the one end that embedded groove (211) were kept away from in expanding spring (212) is connected with butt joint board (4), butt joint board (4) are provided with flange (41) towards one side of expanding spring (212), flange (41) and the cell wall that butt joint board (4) were kept away from in embedded groove (211) leave the interval.

2. The concrete containment door of claim 1, wherein: a plurality of installing ports (121) are arranged on the outer side of the door panel (2) located in the embedded groove (211), shock absorption columns (3) are arranged in the installing ports (121), the side walls, far away from the installing ports (121), of the shock absorption columns (3) are connected with supporting springs (35), and one ends, far away from the shock absorption columns (3), of the supporting springs (35) are connected with round abutting pieces (36).

3. The concrete containment door of claim 2, wherein: air cavity (31) are arranged in the shock absorption column (3), a push rod (33) is fixedly arranged on the circular abutting piece (36), a through hole (34) communicated with the air cavity (31) is formed in the shock absorption column (3), one end, far away from the circular abutting piece (36), of the push rod (33) penetrates through the through hole (34) and stretches into the air cavity (31) to be connected with a rubber piston (32), the edge of the rubber piston (32) is mutually abutted with the side wall of the air cavity (31), and a cross seam (321) allowing a small amount of air to pass through is formed in the rubber piston (32).

4. The concrete containment door of claim 3, wherein: the side wall of the through hole (34) and the side wall of the push rod (33) are mutually abutted.

5. The concrete containment door of claim 4, wherein: and a sealing sleeve (341) is fixedly arranged on the side wall of the through hole (34).

6. The concrete containment door of claim 2, wherein: the both sides of shock attenuation post (3) all are provided with engaging lug (37), spread groove (122) of intercommunication installing port (121) are seted up in door plant (2), engaging lug (37) are located the inside of spread groove (122), engaging lug (37) pass through fastener (123) reciprocal anchorage with door plant (2).

7. The concrete containment door of claim 2, wherein: and a rubber pad (361) is arranged on one surface of the round abutting piece (36) back to the shock absorption column (3).