CN211230096U - Protective airtight door with double buffering devices - Google Patents
Protective airtight door with double buffering devices Download PDFInfo
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- CN211230096U CN211230096U CN201921162078.8U CN201921162078U CN211230096U CN 211230096 U CN211230096 U CN 211230096U CN 201921162078 U CN201921162078 U CN 201921162078U CN 211230096 U CN211230096 U CN 211230096U
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Abstract
The utility model discloses a protective airtight door with double buffering device belongs to engineering blast resistance and strikes shock insulation technical field. The problem of among the prior art ordinary light door plant's shock resistance limited, when receiving the impact, the door plant damages easily, influences life, hardly satisfies the resistance demand to the guard gate at present is solved. Including the transversal last frame of personally submitting the U type, the transversal underframe of personally submitting the U type, outer door board subassembly, interior door board subassembly and a plurality of elastic buffer, it sets up relatively with the underframe and forms the installation spout to go up the frame, one side in the installation spout is fixed mounting to interior door board subassembly, outer door board subassembly movable mounting is the opposite side in the installation spout, elastic buffer installs between interior door board subassembly and outer door board subassembly, and interior door board subassembly passes through the opposite side of elastic buffer laminating in the installation spout.
Description
Technical Field
The utility model relates to an engineering blast resistance strikes shock insulation technical field, and more specifically the utility model relates to a protective airtight door with dual buffer that says so.
Background
Protective airtight doors and airtight doors are one of the very important protective facilities at the entrances and exits of civil air defense engineering, and are generally called civil air defense doors. The civil air defense door leaf basically adopts a steel structure and a reinforced concrete structure, and due to the characteristic of the civil air defense door, the door leaf is thick and heavy, and the weight is up to several tons. Serious problems brought by the defect of 'thickness, big size and heaviness' of the civil air defense door are more and more obvious, for example, the construction and installation are very inconvenient, the self-weight deformation is very easy to occur in the using process, the opening and closing of the door are inconvenient, the sealing is not tight, the service life is greatly reduced, even the operation is invalid in critical time, and serious consequences are caused; in addition, the device brings great troubles to daily maintenance, thereby greatly increasing the use and maintenance cost.
The common light door plate has limited impact resistance, is easy to damage when being impacted, influences the service life, and is difficult to meet the resistance requirement of the protective door at present, so that the development of a novel light protective door becomes necessary and urgent.
SUMMERY OF THE UTILITY MODEL
In order to solve the shock resistance of ordinary light door plant among the prior art limited, when receiving the impact, the door plant damages easily, influences life, hardly satisfies the problem to the resistance demand of guard gate at present, the utility model provides a protective sealed door with dual buffer.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a protective airtight door with dual buffer, including the transversal last frame of personally submitting the U type, the transversal underframe of personally submitting the U type, outer door board subassembly, interior door board subassembly and a plurality of elastic buffer, it forms the installation spout to go up frame and underframe and set up relatively, one side in the installation spout of interior door board subassembly fixed mounting, outer door board subassembly movable mounting is the opposite side in the installation spout, elastic buffer installs between interior door board subassembly and outer door board subassembly, and the opposite side of door board subassembly in the installation spout is laminated through elastic buffer in interior door board subassembly.
When the protective airtight door with the double buffering device is installed, the outer door panel component is arranged towards the outside, when the outer door panel component is subjected to explosion shock waves generated by the outside, the outer door panel component can move towards the inner door panel component under stress, and because the outer door panel component and the side wall of the installation chute formed by the upper frame and the lower frame are movably connected, the outer door panel component cannot drive the side walls of the upper frame and the lower frame to move together when moving towards the inner door panel component after being stressed, so that the upper frame and the lower frame cannot deform; and outer door plant subassembly atress back can extrude interior door plant subassembly and the elastic buffer between the outer door plant subassembly when removing to interior door plant subassembly direction, carries out the energy-absorbing to the shock wave through the compound mode that a plurality of elastic buffer and outer door plant subassembly self structure warp, and compares in solid reinforced concrete structure, effectively reduces dead weight, transportation and simple to operate. The problem of ordinary light door plant's shock resistance limited, when receiving the impact, the door plant damages easily, influences life, hardly satisfies the resistance demand to the guard gate at present is solved.
Furthermore, the outer door plate assembly comprises a plurality of outer door plate vertical beams and outer door plate cross beams which are arranged in a transverse-vertical alternating manner, wherein the top ends of the outer door plate vertical beams are attached to the side wall of the upper frame, and a gap is formed between the top ends of the outer door plate vertical beams and the top of the upper frame; the bottom end of the outer door plate vertical beam is attached to the side wall of the lower frame, and a gap is formed between the bottom end of the outer door plate vertical beam and the bottom of the lower frame. The arrangement of the gaps between the top ends of the outer door plate vertical beams and the gaps between the bottom ends of the outer door plate vertical beams and the upper frame and the lower frame ensure that when the outer door plate assembly is impacted by shock waves, the top ends of the outer door plate vertical beams or the outer door plate cross beams cannot be subjected to the friction force of the upper frame and the lower frame when moving towards the inner door plate assembly, so that the elastic buffer device can be extruded to absorb energy conveniently; and secondly, when the outer door panel assembly is impacted by shock waves and moves towards the inner door panel assembly, the deformation causes the contact between the top end of the outer door panel vertical beam or the top end of the outer door panel cross beam and the upper frame or the contact between the bottom end of the outer door panel vertical beam or the bottom end of the outer door panel cross beam and the lower frame, so that the outer door panel assembly is prevented from continuously moving towards the inner door panel assembly to extrude the elastic buffer device to absorb energy.
Furthermore, the positions where the top end of the outer door plate vertical beam is attached to the side wall of the upper frame and the positions where the bottom end of the outer door plate vertical beam is attached to the side wall of the lower frame are provided with a primary buffer device for fixing the top end of the outer door plate vertical beam, the side wall of the upper frame and the bottom end of the outer door plate vertical beam to the side wall of the lower frame. One-level buffer's setting is that there is an innovation point of this patent, has set up one-level buffer, like this when outer door panel assembly receives external shock wave effect, outer door panel assembly takes the lead and contacts with the shock wave, and one-level buffer takes place the buffering shock attenuation at first under the shock wave effect, and when reaching the certain degree, the phenomenon of rupture appears, has played elementary cushioning effect to the shock wave. And then the outer door plate assembly continues to move towards the inner door plate assembly, and at the moment, the elastic buffer device is slowly deformed due to the extrusion of the outer door plate assembly, so that the impact acting force on the outer door plate assembly is absorbed, and finally the absorption is completed.
Further, the first-stage buffer device is a fastening screw. One-level buffer sets up to fastening screw, mainly wants to play the effect of a buffering, can not be with outer door panel subassembly and go up the too firm of fixing between frame and the underframe, prevents when outer door panel subassembly receives external shock wave effect, and one-level buffer disappearance rupture phenomenon leads to frame or underframe to warp, and then leads to the whole unstability of guard gate or even inefficacy.
Furthermore, the inner door panel assembly comprises a plurality of inner door panel vertical beams and inner door panel cross beams which are arranged in a transverse-vertical alternating manner, wherein the top ends of the inner door panel vertical beams are attached to the side wall of the upper frame, and a gap is formed between the top ends of the inner door panel vertical beams and the top of the upper frame; the bottom end of the inner door plate vertical beam is attached to the side wall of the lower frame, and a gap is formed between the bottom end of the inner door plate vertical beam and the bottom of the lower frame.
Furthermore, the top end of the inner door plate vertical beam is fixed on the side wall of the upper frame, and the bottom end of the outer door plate vertical beam is fixed on the side wall of the lower frame.
Furthermore, the outer door plate vertical beam, the outer door plate cross beam, the inner door plate vertical beam and the inner door plate cross beam are all hollow channel steel. The rigidity is strong, and the framework is stable. Meanwhile, the self weight can be reduced, and the installation and the transportation are convenient.
Furthermore, a first groove for fixing the elastic buffer device is formed in the intersection point of the outer door plate vertical beam and the outer door plate cross beam, a second groove for fixing the elastic buffer device is formed in the intersection point of the inner door plate vertical beam and the inner door plate cross beam, one end of the elastic buffer device is installed in the first groove, and the other end of the elastic buffer device is installed in the second groove. Is convenient for installation, fixation and replacement.
Further, the elastic buffer device is an annular spring. The structure of the annular spring is that a plurality of pairs of outer rings with inner conical surfaces are matched with inner rings with outer conical surfaces, when the annular spring bears axial acting force, the generated normal acting force acts on the contact surfaces of the inner and outer rings, the inner and outer rings slide relatively, the diameter of the inner ring is reduced under the influence of compression acting force, and the diameter of the outer ring is enlarged under the influence of tensile acting force. The deformation effect of the inner ring and the outer ring generated by the relative sliding of the annular spring under the action of external force is incomparable with other springs. I.e. axial forces can be relieved. Therefore, the annular spring is arranged between the inner door panel assembly and the outer door panel assembly, so that the space size is reduced, and larger shock wave energy can be absorbed.
Furthermore, an upper bearing plate is installed on the outer side of the top of the upper frame, and a lower bearing plate is installed on the outer side of the bottom of the lower frame. Go up bearing plate and lower bearing plate and be used for with the utility model discloses a protective airtight door of double buffering device installs in civil air defense engineering exit.
Compared with the prior art, the utility model beneficial effect who has is:
1. when the outer door panel assembly is subjected to explosion shock waves generated by the outside, the outer door panel assembly is stressed to move towards the inner door panel assembly, and the outer door panel assembly is movably connected with the side wall of the mounting chute formed by the upper frame and the lower frame, so that the outer door panel assembly cannot drive the side walls of the upper frame and the lower frame to move together when moving towards the inner door panel assembly after being stressed, and the upper frame and the lower frame cannot deform; and outer door plant subassembly atress back can extrude interior door plant subassembly and the elastic buffer between the outer door plant subassembly when removing to interior door plant subassembly direction, carries out the energy-absorbing to the shock wave through the compound mode that a plurality of elastic buffer and outer door plant subassembly self structure warp, and compares in solid reinforced concrete structure, effectively reduces dead weight, transportation and simple to operate. The problem of ordinary light door plant's shock resistance limited, when receiving the impact, the door plant damages easily, influences life, hardly satisfies the resistance demand to the guard gate at present is solved.
2. The arrangement of the gaps between the top end of the outer door plate vertical beam and the bottom end of the outer door plate vertical beam as well as the upper frame and the lower frame ensures that when the outer door plate assembly is impacted by shock waves, the top end of the outer door plate vertical beam or the top end of the outer door plate cross beam cannot be subjected to the friction force of the upper frame and the lower frame when moving towards the direction of the inner door plate assembly, so that the elastic buffer device can be extruded to absorb energy conveniently; and secondly, when the outer door panel assembly is impacted by shock waves and moves towards the inner door panel assembly, the deformation causes the contact between the top end of the outer door panel vertical beam or the top end of the outer door panel cross beam and the upper frame or the contact between the bottom end of the outer door panel vertical beam or the bottom end of the outer door panel cross beam and the lower frame, so that the outer door panel assembly is prevented from continuously moving towards the inner door panel assembly to extrude the elastic buffer device to absorb energy.
3. The utility model discloses an one-level buffer's setting is that there is an innovation point of this patent, has set up one-level buffer, like this when outer door panel assembly receives external shock wave effect, outer door panel assembly contacts with the shock wave earlier, and one-level buffer takes place the buffering shock attenuation at first under the shock wave effect, when reaching the certain degree, and the phenomenon of rupture appears, has played elementary cushioning effect to the shock wave. And then the outer door plate assembly continues to move towards the inner door plate assembly, and at the moment, the elastic buffer device is slowly deformed due to the extrusion of the outer door plate assembly, so that the impact acting force on the outer door plate assembly is absorbed, and finally the absorption is completed.
Drawings
Fig. 1 is a schematic view of a protective airtight door having a double buffering device according to the present invention;
FIG. 2 is a cross-sectional view C-C of FIG. 1;
FIG. 3 is an enlarged partial schematic view of A in FIG. 2;
FIG. 4 is an enlarged partial schematic view of B in FIG. 2;
fig. 5 is a schematic structural view of an outer door panel assembly of a protective airtight door having a double buffering device according to the present invention;
fig. 6 is a schematic structural view of an inner door panel assembly of a protective airtight door having a double buffering device according to the present invention.
The labels in the figure are: 1-upper frame, 2-lower frame, 3-outer door plate component, 4-inner door plate component, 5-primary buffer device, 6-upper bearing plate, 7-elastic buffer device, 8-first groove, 9-lower bearing plate, 10-outer door plate beam, 11-outer door plate vertical beam, 12-inner door plate beam, 13-inner door plate vertical beam and 14-second groove.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1 and 2, a protective airtight door with double buffering devices comprises an upper frame 1 with a U-shaped cross section, a lower frame 2 with a U-shaped cross section, an outer door panel assembly 3, an inner door panel assembly 4 and a plurality of elastic buffering devices 7, wherein the upper frame 1 and the lower frame 2 are oppositely arranged to form an installation chute, the inner door panel assembly 4 is fixedly arranged on one side in the installation chute, the outer door panel assembly 3 is movably arranged on the other side in the installation chute, as shown in fig. 3 and 4, the upper frame 1 and the lower frame 2 only wrap the outer door panel assembly 3 and the top and bottom of the inner door panel assembly 4 respectively, the elastic buffering devices 7 are arranged between the inner door panel assembly 4 and the outer door panel assembly 3, and the inner door panel assembly 4 is attached to the other side in the installation chute through the elastic buffering devices 7.
As shown in fig. 5, in this embodiment, the outer door panel assembly 3 includes a plurality of outer door panel vertical beams 11 and outer door panel cross beams 10 arranged in a horizontal-vertical manner, wherein the top end of each outer door panel vertical beam 11 is attached to the side wall of the upper frame 1, and a gap is formed between the top end of each outer door panel vertical beam and the top of the upper frame 1; the bottom end of the outer door panel vertical beam 11 is attached to the side wall of the lower frame 2, and a gap is formed between the bottom end of the outer door panel vertical beam and the bottom of the lower frame 2. In practical use, the outer door panel vertical beams 11 and the outer door panel cross beams 10 are also wrapped by a layer of skin.
As shown in fig. 6, in this embodiment, the inner door panel assembly 4 includes a plurality of inner door panel vertical beams 13 and inner door panel cross beams 12 arranged horizontally and vertically at intervals, wherein the top ends of the inner door panel vertical beams 13 are attached to the side walls of the upper frame 1, and a gap is formed between the top ends of the inner door panel vertical beams and the top of the upper frame 1; the bottom end of the inner door panel vertical beam 13 is attached to the side wall of the lower frame 2, and a gap is formed between the bottom end of the inner door panel vertical beam and the bottom of the lower frame 2. In practical use, the inner door panel vertical beams 13 and the inner door panel cross beams 12 are also covered by a layer of skin.
In this embodiment, the top ends of the inner door panel vertical beams 13 are welded to the side walls of the upper frame 1, and the bottom ends of the outer door panel vertical beams 11 are welded to the side walls of the lower frame 2.
In this implementation, outer door panel vertical beam 11, outer door panel crossbeam 10, interior door panel vertical beam 13 and interior door panel crossbeam 12 are the hollow 3mm thick Q235 channel-section steel, and the welding seam between outer door panel vertical beam 11 and the outer door panel crossbeam 10 is all-welded, and the welding seam height is 4mm, and the rigidity is strong, and the framework is stable. Meanwhile, the self weight can be reduced, and the installation and the transportation are convenient.
A first groove 8 for fixing the elastic buffer device 7 is arranged at the intersection of the outer door panel vertical beam 11 and the outer door panel cross beam 10, a second groove 14 for fixing the elastic buffer device 7 is arranged at the intersection of the inner door panel vertical beam 13 and the inner door panel cross beam 12, one end of the elastic buffer device 7 is installed in the first groove 8, and the other end of the elastic buffer device 7 is installed in the second groove 14. Is convenient for installation, fixation and replacement.
In this embodiment, the elastic buffer 7 is a ring spring. The structure of the annular spring is that a plurality of pairs of outer rings with inner conical surfaces are matched with inner rings with outer conical surfaces, when the annular spring bears axial acting force, the generated normal acting force acts on the contact surfaces of the inner and outer rings, the inner and outer rings slide relatively, the diameter of the inner ring is reduced under the influence of compression acting force, and the diameter of the outer ring is enlarged under the influence of tensile acting force. The deformation effect of the inner ring and the outer ring generated by the relative sliding of the annular spring under the action of external force is incomparable with other springs. I.e. axial forces can be relieved. Therefore, the annular spring is arranged between the inner door panel assembly 4 and the outer door panel assembly 3, so that the space size is reduced, and the larger shock wave energy can be absorbed.
For practical installation, an upper bearing plate 6 is installed on the top outer side of the upper frame 1, and a lower bearing plate 9 is installed on the bottom outer side of the lower frame 2. Go up bearing plate 6 and lower bearing plate 9 and be used for with the utility model discloses a protective airtight door of double buffering device installs in civil air defense engineering exit.
The utility model discloses a protective airtight door with double buffer when the installation, with outer door plant subassembly 3 towards external setting, when outer door plant subassembly 3 received the external world and produce the explosion shock wave, can the atress to inside door plant subassembly 4 direction removal, because be swing joint between the lateral wall of the installation spout that outer door plant subassembly 3 and last frame 1 and underframe 2 constitute, so when 4 directions of inside door plant subassembly move after outer door plant subassembly 3 atress, the lateral wall that can not drive frame 1 and underframe 2 moves together, just so can not lead to frame 1 and underframe 2 to warp.
And outer door plant subassembly 3 atress back can extrude interior door plant subassembly 4 and the elastic buffer 7 between the outer door plant subassembly 3 when moving to interior door plant subassembly 4 direction, carries out the energy-absorbing to the shock wave through the compound mode of a plurality of elastic buffer 7 and outer door plant subassembly 3 self structural deformation, and compares in solid reinforced concrete structure, effectively reduces the dead weight, transportation and simple to operate. The problem of ordinary light door plant's shock resistance limited, when receiving the impact, the door plant damages easily, influences life, hardly satisfies the resistance demand to the guard gate at present is solved.
The arrangement of the gaps between the top ends of the outer door panel vertical beams 11 and the gaps between the bottom ends of the outer door panel vertical beams 11 and the upper frame 1 and the lower frame 2 ensures that when the outer door panel assembly 3 is impacted by shock waves, the top ends of the outer door panel vertical beams 11 or the outer door panel cross beams 10 cannot be subjected to the friction force of the upper frame 1 and the lower frame 2 when moving towards the inner door panel assembly 4, so that the elastic buffer device 7 can be extruded to absorb energy conveniently; secondly, when the outer door panel assembly 3 is impacted by shock waves and moves towards the inner door panel assembly 4, the deformation causes the contact between the top end of the outer door panel vertical beam 11 or the top end of the outer door panel cross beam 10 and the upper frame 1 or the contact between the bottom end of the outer door panel vertical beam 11 or the bottom end of the outer door panel cross beam 10 and the lower frame 2, and the outer door panel assembly 3 is prevented from continuing to move towards the inner door panel assembly 4 to extrude the elastic buffer device 7 to absorb energy.
Example 2:
as shown in fig. 3 and 4, the present embodiment is further optimized based on embodiment 1, and the present embodiment focuses on the improvement of embodiment 1, and the same points are not described again, in the present embodiment, the positions where the top end of the outer door panel vertical beam 11 and the side wall of the upper frame 1 are attached and the positions where the bottom end of the outer door panel vertical beam 11 and the side wall of the lower frame 2 are attached are both provided with the primary buffer device 5 for fixing the top end of the outer door panel vertical beam 11 and the side wall of the upper frame 1 and the bottom end of the outer door panel vertical beam 11 and the side wall of the lower frame 2. One-level buffer 5's setting is that there is an innovation point of this patent, has set up one-level buffer 5, and like this when outer door plant subassembly 3 receives external shock wave to act on, outer door plant subassembly 3 takes the lead to contact with the shock wave, and one-level buffer 5 takes place the buffering shock attenuation at first under the shock wave effect, when reaching the certain degree, and the phenomenon of rupture appears, has played elementary cushioning effect to the shock wave. And then the outer door panel component 3 continues to move towards the inner door panel component 4, at the moment, the elastic buffer device 7 slowly deforms due to the extrusion of the outer door panel component 3, the impact acting force on the outer door panel component 3 is absorbed, and the absorption is finally completed.
Preferably, the primary buffer device 5 is a fastening screw. One-level buffer 5 sets up to fastening screw, mainly wants to play the effect of a buffering, can not be with outer door panel subassembly 3 and go up the too firm of fixing between frame 1 and the underframe 2, prevents when outer door panel subassembly 3 receives external shock wave effect, and one-level buffer 5 disappearance rupture phenomenon leads to frame 1 or underframe 2 to warp, and then leads to the whole unstability of guard gate or even inefficacy.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a protective airtight door with double buffer which characterized in that: including transversal last frame (1) of personally submitting the U type, transversal underframe (2) of personally submitting the U type, outer door plant subassembly (3), interior door plant subassembly (4) and a plurality of elastic buffer device (7), it sets up relatively with underframe (2) and forms the installation spout to go up frame (1), one side in the installation spout is fixed mounting to interior door plant subassembly (4), the opposite side in the installation spout of outer door plant subassembly (3) movable mounting, elastic buffer device (7) are installed between interior door plant subassembly (4) and outer door plant subassembly (3), and interior door plant subassembly (4) are through the opposite side of elastic buffer device (7) laminating in the installation spout.
2. A protective containment door with dual cushioning apparatus as in claim 1, wherein: the outer door plate assembly (3) comprises a plurality of outer door plate vertical beams (11) and outer door plate cross beams (10) which are arranged in a transverse-vertical mode, wherein the top ends of the outer door plate vertical beams (11) are attached to the side wall of the upper frame (1) and a gap is formed between the top ends of the outer door plate vertical beams and the top of the upper frame (1); the bottom end of the outer door plate vertical beam (11) is attached to the side wall of the lower frame (2) and a gap is formed between the bottom end of the outer door plate vertical beam and the bottom of the lower frame (2).
3. A protective containment door with dual cushioning apparatus as in claim 2, wherein: the top end of the outer door plate vertical beam (11) is attached to the side wall of the upper frame (1), and the bottom end of the outer door plate vertical beam (11) is attached to the side wall of the lower frame (2), and a first-stage buffer device (5) used for fixing the top end of the outer door plate vertical beam (11) and the side wall of the upper frame (1), and fixing the bottom end of the outer door plate vertical beam (11) and the side wall of the lower frame (2) are mounted at the positions.
4. A protective containment door with dual cushioning apparatus as in claim 3, wherein: the first-stage buffer device (5) is a fastening screw.
5. A protective containment door with dual cushioning apparatus as in claim 3, wherein: the inner door plate assembly (4) comprises a plurality of inner door plate vertical beams (13) and inner door plate cross beams (12) which are arranged in a transverse-vertical mode, wherein the top ends of the inner door plate vertical beams (13) are attached to the side wall of the upper frame (1) and a gap is formed between the top ends of the inner door plate vertical beams and the top of the upper frame (1); the bottom end of the inner door plate vertical beam (13) is attached to the side wall of the lower frame (2) and a gap is formed between the bottom end of the inner door plate vertical beam and the bottom of the lower frame (2).
6. A protective containment door with dual cushioning apparatus as in claim 5, wherein: the top end of the inner door panel vertical beam (13) is fixed on the side wall of the upper frame (1), and the bottom end of the outer door panel vertical beam (11) is fixed on the side wall of the lower frame (2).
7. A protective containment door with dual cushioning apparatus as in claim 5, wherein: the outer door plate vertical beam (11), the outer door plate cross beam (10), the inner door plate vertical beam (13) and the inner door plate cross beam (12) are all hollow channel steel.
8. A protective containment door with dual cushioning apparatus as in claim 5, wherein: the cross point of the outer door plate vertical beam (11) and the outer door plate cross beam (10) is provided with a first groove (8) for fixing the elastic buffer device (7), the cross point of the inner door plate vertical beam (13) and the inner door plate cross beam (12) is provided with a second groove (14) for fixing the elastic buffer device (7), one end of the elastic buffer device (7) is installed in the first groove (8), and the other end of the elastic buffer device (7) is installed in the second groove (14).
9. A protective containment door with dual cushioning apparatus as in any of claims 1-8, wherein: the elastic buffer device (7) is an annular spring.
10. A protective containment door with dual cushioning apparatus as in claim 9, wherein: an upper bearing plate (6) is installed on the outer side of the top of the upper frame (1), and a lower bearing plate (9) is installed on the outer side of the bottom of the lower frame (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921162078.8U CN211230096U (en) | 2019-07-23 | 2019-07-23 | Protective airtight door with double buffering devices |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921162078.8U CN211230096U (en) | 2019-07-23 | 2019-07-23 | Protective airtight door with double buffering devices |
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| Publication Number | Publication Date |
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| CN211230096U true CN211230096U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921162078.8U Active CN211230096U (en) | 2019-07-23 | 2019-07-23 | Protective airtight door with double buffering devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242177A (en) * | 2019-07-23 | 2019-09-17 | 四川科志人防设备股份有限公司 | A kind of airtight blast door with double buffering device |
-
2019
- 2019-07-23 CN CN201921162078.8U patent/CN211230096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242177A (en) * | 2019-07-23 | 2019-09-17 | 四川科志人防设备股份有限公司 | A kind of airtight blast door with double buffering device |
| CN110242177B (en) * | 2019-07-23 | 2024-06-25 | 四川科志人防设备股份有限公司 | Protective airtight door with double buffering devices |
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