An impact-resistant sealing door of an underground personnel emergency refuge chamber

Abstract

The utility model relates to the technical field of mine safety equipment, disclose a kind of anti-impact sealing door of underground personnel emergency refuge chamber, the door includes door frame, the anti-impact component of rotation connection with door frame, door lock component and sealing component.The anti-impact component is composite layered structure, is composed of titanium alloy door, honeycomb aluminum core layer, support frame layer and polyurethane layer.The door lock component is pure mechanical linkage structure, and multiple compression heads are made to slide along the inclined surface compression block on door frame by hand wheel driving connecting rod, and multiple-point synchronous locking is realized.The sealing component uses sectional type sealing strip.The utility model effectively absorbs impact energy by composite structure, and reliable sealing is guaranteed using pure mechanical locking, solve the problem that existing chamber door weak impact resistance, easily deformed leading to sealing failure, with the beneficial effects of stable structure, strong protection ability, reliable sealing and easy maintenance.

Description

Technical Field

[0001] This utility model relates to the field of mining safety equipment technology, and in particular to an impact-resistant sealing door for an emergency refuge chamber for underground personnel. Background Technology

[0002] Emergency refuge chambers for underground personnel are critical facilities for ensuring the safety of workers in high-risk industries such as coal mining. In the event of major accidents such as gas explosions or fires, refuge chambers provide a temporary, safe living space isolated from harmful external environments for personnel who cannot evacuate in time.

[0003] As the only physical passage between the refuge chamber and the outside world, the protective door is the core barrier of the entire refuge system, and its performance directly determines the safety of the personnel inside. Existing refuge chamber protective doors typically use thickened steel plate structures, coupled with multi-point locking devices, in order to withstand external impacts and maintain a seal during an accident, thus providing protection for the personnel inside.

[0004] However, when faced with extreme accidents such as gas explosions that generate massive shockwaves, these traditional protective doors, which rely on a single, heavy material for rigid resistance, reveal their fundamental structural flaws. The enormous impact energy acts instantly on the door, and the single-structure door panel struggles to effectively absorb and disperse this energy, often leading to severe plastic deformation or even structural damage.

[0005] Once the door itself deforms, the original precise fit between the door leaf and the door frame is disrupted, directly leading to the failure of the sealing structure. Even if the locking device remains intact, the deformed door can no longer effectively fit against the sealing strip, creating gaps that allow the high temperatures, toxic gases, and dust generated by the explosion to rush into the chamber. Ultimately, this causes the refuge chamber to lose its core function as a "safety island," seriously threatening the lives of those inside. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides an impact-resistant sealing door for emergency refuge chambers for underground personnel. It aims to improve the problem that under the impact of an explosion, the single-structure door body is prone to overall deformation, leading to sealing failure. This utility model aims to provide an impact-resistant sealing door for emergency refuge chambers for underground personnel with an improved structure that can effectively solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an impact-resistant sealing door for an emergency refuge chamber for underground personnel, comprising: a door frame, an impact-resistant component rotatably connected to the door frame via a hinge, a door lock component disposed on the impact-resistant component, and a sealing component disposed between the door frame and the impact-resistant component.

[0008] The impact-resistant component is a composite layered structure, comprising a titanium alloy door, a honeycomb aluminum core layer, a support frame layer, and a polyurethane layer.

[0009] Furthermore, the door lock assembly includes a linkage mechanism that drives the movement of multiple pressing heads. A pressing block that cooperates with the pressing head is fixed on the door frame. The pressing block has an inclined surface with varying thickness. The pressing head cooperates with the inclined surface of the pressing block to lock the impact-resistant assembly.

[0010] Preferably, the linkage mechanism includes a handwheel, a first gear coaxially connected to the handwheel, a second gear meshing with the first gear, and a first connecting rod rotatably connected to the second gear.

[0011] Preferably, the end of the first connecting rod is rotatably connected to the connecting piece, the middle part of the connecting piece is rotatably connected to the impact-resistant component, and the clamping head is disposed at the other end of the connecting piece.

[0012] Preferably, the linkage mechanism further includes a second link and a third link; one end of the second link is rotatably connected to another connecting piece, one end of the third link is rotatably connected to the middle of the second link, and the other end of the third link is rotatably connected to yet another connecting piece, so as to achieve multi-point synchronous locking.

[0013] Preferably, in the impact-resistant assembly, the titanium alloy door is the outermost layer, the polyurethane layer is the innermost layer, the honeycomb aluminum core layer is disposed between the titanium alloy door and the support frame layer, and the support frame layer is disposed between the honeycomb aluminum core layer and the polyurethane layer.

[0014] Preferably, the sealing assembly includes a fluororubber sealing strip and an EPDM rubber sealing strip, and both the fluororubber sealing strip and the EPDM rubber sealing strip have a segmented structure.

[0015] Preferably, the sealing assembly further includes an elastic sealing strip that fits tightly against the outer peripheral surface of the titanium alloy door.

[0016] Preferably, the door frame is also provided with a fixing block for embedding into the wall to enhance the stability of the installation.

[0017] Preferably, the impact-resistant component also has an observation window for observing the external situation.

[0018] This utility model has the following beneficial effects: In this invention, by setting up a composite impact-resistant component consisting of a titanium alloy door, a honeycomb aluminum core layer, a support frame layer, and a polyurethane layer, the problem of existing refuge chamber doors having a simple structure, weak impact resistance, and being prone to overall deformation and failure under explosive impact is solved. This achieves the technical effect of synergistically dispersing, absorbing, and buffering impact energy, effectively protecting the integrity of the door structure, and significantly improving safety protection capabilities.

[0019] This utility model solves the problems of existing sealed doors failing to work in emergency situations such as power outages underground, and uneven locking force leading to poor sealing, by setting up a purely mechanical linkage door lock assembly consisting of a handwheel, gear set, and multi-stage linkage. It drives multiple pressing heads to move along the inclined surface of the pressing block, thereby solving the problems of existing sealed doors failing to work in emergency situations such as power outages underground, and uneven locking force leading to poor sealing. It achieves the technical effect of reliable locking without relying on power supply, and can generate huge and uniform locking force to ensure that the door is firmly sealed. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an impact-resistant sealing door for an emergency refuge chamber for underground personnel proposed in this utility model. Figure 2 This is a schematic diagram of the first link of the impact-resistant sealing door of an emergency refuge chamber for underground personnel proposed in this utility model. Figure 3 This is a schematic diagram of the titanium alloy door portion of an impact-resistant sealing door for an emergency refuge chamber for underground personnel, as proposed in this utility model. Figure 4 This is a schematic diagram of the clamping block structure of an impact-resistant sealing door for an emergency refuge chamber for underground personnel, as proposed in this utility model. Figure 5 This is a schematic diagram of the EPDM rubber sealing strip of an impact-resistant sealing door for an emergency refuge chamber for underground personnel, as proposed in this utility model. Figure 6 for Figure 2 Enlarged diagram of point A in the middle.

[0021] Legend: 1. Door frame; 2. Fixing block; 3. Hinge; 4. Observation window; 5. Impact-resistant components; 501. Titanium alloy door; 502. Honeycomb aluminum core layer; 503. Support frame layer; 504. Polyurethane layer; 6. Door lock assembly; 601. Handwheel; 602. First gear; 603. Second gear; 604. First connecting rod; 605. Connecting piece; 606. Second connecting rod; 607. Third connecting rod; 608. Pressing head; 609. Pressing block; 7. Sealing assembly; 701. Fluororubber sealing strip; 702. EPDM rubber sealing strip; 703. Elastic sealing strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 6 This utility model provides an impact-resistant sealing door for an emergency refuge chamber for underground personnel, aiming to solve the problems of insufficient impact resistance and difficult maintenance of the sealing structure of existing underground refuge chamber doors.

[0024] The impact-resistant sealed door of the underground personnel emergency refuge chamber includes a door frame 1 and an impact-resistant component 5 rotatably connected to the door frame 1 via a hinge 3. The door frame 1 is also provided with a fixing block 2 for embedding into the wall. The door body is also provided with a door lock component 6 for locking and a sealing component 7 for sealing. The door lock component 6 is located on the impact-resistant component 5, and the sealing component 7 is located between the door frame 1 and the impact-resistant component 5. An observation window 4 is also provided on the impact-resistant component 5.

[0025] Specifically, the impact-resistant component 5 is a composite layered structure, designed to effectively disperse and absorb explosive impact energy; refer to Figure 3 The impact-resistant component 5 includes a titanium alloy door 501, a honeycomb aluminum core layer 502, a support frame layer 503, and a polyurethane layer 504. In terms of specific stacking positions, the titanium alloy door 501 is the outermost layer of the entire impact-resistant component 5, the polyurethane layer 504 is the innermost layer of the entire impact-resistant component 5, the honeycomb aluminum core layer 502 is disposed between the titanium alloy door 501 and the support frame layer 503, and the support frame layer 503 is disposed between the honeycomb aluminum core layer 502 and the polyurethane layer 504. The door lock component 6 includes a linkage mechanism that drives multiple pressing heads 608 to move. A pressing block 609 that cooperates with the pressing head 608 is fixed on the door frame 1. The pressing block 609 has a slope with varying thickness. By sliding the pressing head 608 along the slope with varying thickness of the pressing block 609, the impact-resistant component 5 can be locked or unlocked from the door frame 1.

[0026] To achieve reliable locking, the linkage mechanism of the door lock assembly 6 in this embodiment adopts a purely mechanical design, ensuring operational reliability under extreme conditions such as power outages underground. The linkage mechanism of the door lock assembly 6 will be described in detail below: The linkage mechanism includes a handwheel 601, a first gear 602, a second gear 603, and a first connecting rod 604; the handwheel 601 is coaxially connected to the first gear 602, the first gear 602 and the second gear 603 mesh with each other for transmission, and the first connecting rod 604 is rotatably connected to the second gear 603; when the handwheel 601 is rotated, the first connecting rod 604 is driven to move up and down through the transmission of the first gear 602 and the second gear 603.

[0027] The end of the first connecting rod 604 is rotatably connected to the connecting piece 605, the middle part of the connecting piece 605 is rotatably connected to the outer wall of the impact-resistant component 5, and the pressing head 608 is fixedly set at the other end of the connecting piece 605. This connection method forms a lever structure. When the first connecting rod 604 moves up and down, it can drive the connecting piece 605 to rotate around the fulcrum on the impact-resistant component 5, thereby driving the pressing head 608 to slide along the inclined surface of the pressing block 609.

[0028] The linkage mechanism also includes a second link 606 and a third link 607; one end of the second link 606 is rotatably connected to another connecting piece 605, one end of the third link 607 is rotatably connected to the middle of the second link 606, and the other end of the third link 607 is rotatably connected to another connecting piece 605; the first link 604 drives the initial connecting piece 605 to move, and then through the series and parallel combination of the second link 606 and the third link 607, the motion is transmitted to multiple connecting pieces 605 distributed on the edge of the door, realizing the synchronous movement of all pressing heads 608 and ensuring that the force is uniform when the door is closed.

[0029] To achieve efficient and reliable sealing, the sealing assembly 7 includes a fluororubber sealing strip 701 and an EPDM rubber sealing strip 702. Both the fluororubber sealing strip 701 and the EPDM rubber sealing strip 702 are segmented structures, and each segment of the sealing strip can be disassembled and replaced independently. This design facilitates rapid maintenance in case of partial sealing failure.

[0030] The sealing assembly 7 also includes an elastic sealing strip 703, which is tightly fitted to the outer peripheral surface of the titanium alloy door 501. When the door is closed, the elastic sealing strip 703 contacts the door frame 1 before the fluororubber sealing strip 701 and the EPDM rubber sealing strip 702, forming the first sealing barrier to block most of the dust and liquid, thereby protecting the main sealing strip inside.

[0031] Working principle: When the door is locked, the operator turns the handwheel 601, which drives the first gear 602 to rotate. The first gear 602 meshes with and drives the second gear 603 to rotate in the opposite direction. The first connecting rod 604, which is rotatably connected to the second gear 603, moves downward accordingly. The downward movement of the first connecting rod 604 pushes the connecting piece 605 connected to it to rotate around the fulcrum on the anti-impact component 5, so that the pressing head 608 at the other end of the connecting piece 605 slides along the inclined surface of the pressing block 609 from the thinner part to the thicker part. At the same time, through the linkage of the second connecting rod 606 and the third connecting rod 607, the action is transmitted to the connecting pieces 605 in other positions of the door body, so that all the pressing heads 608 move synchronously towards the thicker part of the pressing block 609, thereby generating a huge and uniform pressing force, firmly pressing the anti-impact component 5 against the door frame 1. At this time, the sealing component 7 is pressed tight, forming a reliable seal. When the door is opened and unlocked, the handwheel 601 is rotated in the opposite direction. Through the reverse movement of the gear and linkage mechanism, all the clamping heads 608 slide along the inclined surface of the clamping block 609 from the thicker part to the thinner part, and the clamping force is released. The impact-resistant component 5 can be opened through the hinge 3 after unlocking. When encountering an explosive impact, the huge shock wave energy first acts on the titanium alloy door 501, and is then largely absorbed and dispersed by the honeycomb aluminum core layer 502 through the deformation and collapse of its honeycomb structure. The remaining impact force is further buffered and attenuated by the polyurethane layer 504. The entire process is supported by the support frame layer 503, which provides stable structural support and ensures the overall structural integrity of the impact-resistant component 5.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An impact-resistant sealing door for an emergency refuge chamber for underground personnel, comprising: The door frame (1), and an impact-resistant assembly (5) rotatably connected to the door frame (1) via a hinge (3); the impact-resistant sealed door further includes a door lock assembly (6) disposed on the impact-resistant assembly (5), and a sealing assembly (7) disposed between the door frame (1) and the impact-resistant assembly (5), characterized in that, The impact-resistant component (5) is a composite layered structure, which includes a titanium alloy door (501), a honeycomb aluminum core layer (502), a support frame layer (503), and a polyurethane layer (504). The door lock assembly (6) includes a linkage mechanism that drives multiple pressing heads (608) to move. A pressing block (609) that cooperates with the pressing head (608) is fixed on the door frame (1). The pressing block (609) has a slope with varying thickness.

2. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 1, characterized in that, The linkage mechanism includes a handwheel (601), a first gear (602) coaxially connected to the handwheel (601), a second gear (603) meshing with the first gear (602), and a first connecting rod (604) rotatably connected to the second gear (603).

3. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 2, characterized in that, The end of the first connecting rod (604) is rotatably connected to the connecting piece (605), the middle part of the connecting piece (605) is rotatably connected to the impact-resistant component (5), and the pressing head (608) is disposed at the other end of the connecting piece (605).

4. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 3, characterized in that, The linkage mechanism further includes a second link (606) and a third link (607); one end of the second link (606) is rotatably connected to another connecting piece (605), one end of the third link (607) is rotatably connected to the middle of the second link (606), and the other end of the third link (607) is rotatably connected to yet another connecting piece (605).

5. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 1, characterized in that, In the impact-resistant component (5), the titanium alloy door (501) is the outermost layer, the polyurethane layer (504) is the innermost layer, the honeycomb aluminum core layer (502) is disposed between the titanium alloy door (501) and the support frame layer (503), and the support frame layer (503) is disposed between the honeycomb aluminum core layer (502) and the polyurethane layer (504).

6. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 1, characterized in that, The sealing assembly (7) includes a fluororubber sealing strip (701) and an EPDM rubber sealing strip (702); both the fluororubber sealing strip (701) and the EPDM rubber sealing strip (702) are segmented structures.

7. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 6, characterized in that, The sealing assembly (7) also includes an elastic sealing strip (703) that fits tightly against the outer peripheral surface of the titanium alloy door (501).

8. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 1, characterized in that, The door frame (1) is also provided with a fixing block (2) for embedding into the wall.

9. The impact-resistant sealing door for an emergency refuge chamber for underground personnel according to claim 1, characterized in that, The impact-resistant component (5) is also provided with an observation window (4).

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