CN211975060U - Single-leaf steel structure fireproof protective airtight door for high-speed railway and subway tunnel - Google Patents

Abstract

The utility model belongs to the technical field of protection engineering, it discloses a high-speed railway and subway tunnel single leaf steel construction fire prevention protection airtight door. The door comprises a door frame, a hinge, a door leaf, a fireproof sealing strip and a linkage latch; the door frame is provided with an upper horizontal part, a lower horizontal part, a left vertical part and a right vertical part which are arranged oppositely, the upper horizontal part, the left vertical part and the right vertical part are provided with first embedded pressing strips, the upper surface of the lower horizontal part is provided with an embedded pressing plate, and the free end of the plate is suspended in the air relative to the door frame to form a second embedded pressing strip; the hinge is positioned at one side of the door frame; the door leaf is hinged with the door frame through a hinge; the linkage latch includes: the lock comprises a base, a handle, a transmission mechanism and a lock head assembly; the base and the lock head assembly are arranged on the door leaf; the handle is arranged on the base; the transmission mechanism is respectively connected with the handle and the lock head assembly. This scheme can realize that a handle simultaneous control a plurality of tapered end subassemblies unblock or locking, improves the locking effect, fastness and reliability when improving the locking.

Description

Single-leaf steel structure fireproof protective airtight door for high-speed railway and subway tunnel

Technical Field

The utility model belongs to the technical field of protection engineering, in particular to high-speed railway and subway tunnel single leaf steel construction fire prevention protection airtight door.

Background

The fireproof door is arranged in the passage, so that when an accident happens in the passage, such as explosion or fire, the accident only has damage influence on the passage on one side of the fireproof door, and hardly has damage influence on the passage on the other side of the fireproof door.

When an accident happens, the effective closing of the fireproof door is a key measure for avoiding the influence of the damage of the accident on the expansion, and in the prior art, a handle is usually used for controlling a lock head to unlock or lock, namely, the door leaf and the door frame are connected through the lock head to achieve the effect of locking the door, and the locking effect is not ideal.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a high-speed railway and subway tunnel single leaf steel construction fire prevention protection airtight door, it includes: the door comprises a door frame, a hinge, a door leaf, a fireproof sealing strip and a linkage latch lock; the door frame is provided with an upper horizontal part and a lower horizontal part which are arranged oppositely, and a left vertical part and a right vertical part which are arranged oppositely, the upper horizontal part, the left vertical part and the right vertical part are provided with first embedded pressing strips, the upper surface of the lower horizontal part is provided with an embedded pressing plate, and the free end of the embedded pressing plate extends towards the outer side of the door frame and is suspended relative to the door frame to form a second embedded pressing strip; the hinge is positioned on one side of the door frame; the door leaf is a steel structure door leaf, an adhesive tape groove for embedding the fireproof sealing strip is formed in the door leaf, and the door leaf is hinged with the door frame through the hinge so that the door leaf rotates relative to the door frame; the linkage latch includes: the lock comprises a base, a handle, a transmission mechanism and a lock head assembly; the base and the lock head assembly are arranged on the door leaf; the handle is mounted on the base; the transmission mechanism is respectively connected with the handle and the lock head assembly.

Optionally, in the fire protection containment door as described above, the base includes a first mounting plate, a second mounting plate, and a bushing; the first mounting plate and the second mounting plate are respectively mounted on the inner side and the outer side of the door leaf; the shaft sleeve is arranged in the door leaf, one end of the shaft sleeve penetrates through the first mounting plate and is fixedly connected with the first mounting plate, and the other end of the shaft sleeve penetrates through the second mounting plate and is fixedly connected with the second mounting plate.

Optionally, in the fire protection enclosure described above, the handle comprises a first outer handle, a second outer handle, and an inner handle; the first outer handle and the second outer handle are respectively connected with the inner handle, and the inner handle is installed in the base and is rotatably connected with the base.

Optionally, in the fire protection enclosure as described above, the inner handle is rotatably connected to the base by a bearing; the inner handle is provided with a polygonal end part which is inserted into the first outer handle; and a positioning screw is arranged on the first outer handle and connected with the polygonal end part.

Optionally, in the fire-proof protection enclosure, two ends of the inner handle are rotatably connected with the base through the bearings respectively; the end part of the polygon is a regular polygon, and a taper is arranged along the axis direction; and a bearing retainer ring and a retainer ring nut are arranged between the polygonal end part and the bearing, the bearing retainer ring is connected with the bearing, and the retainer ring nut is connected with the bearing retainer ring.

Optionally, in the fire protection enclosure as described above, the lock cylinder assembly includes a locking seat, a locking head, and a return spring; the locking seat is arranged on the door leaf; the locking head is arranged in the locking seat and is in sliding fit with the locking seat; the reset spring is installed in the locking seat, one end of the reset spring is connected with the locking seat, and the other end of the reset spring is connected with the locking head.

Optionally, in the fireproof protection enclosure, a locking gasket is arranged between the locking seat and the door leaf, and the locking gasket is used for adjusting the installation position of the locking seat; a locking copper sleeve is arranged in the locking seat and is in sliding fit with the locking head; one end of the locking head is a wedge-shaped end, and the wedge-shaped end is used for being inserted into a lock hole formed in the door frame.

Optionally, in the fire-proof protection enclosure, a guide key is arranged on the locking head, and the guide key is in sliding fit with the locking seat and used for providing sliding guide for the locking head; and an oil cup is arranged on the locking seat and is used for injecting oil between the locking seat and the locking head.

Optionally, in the fire protection enclosure as described above, the transmission mechanism includes a swing arm plate mounted on the handle and a connecting rod connected to the swing arm plate; the rotating arm plate comprises a first opening and a second opening, the handle is inserted into the first opening, one end of the connecting rod is rotatably connected with the second opening, and the other end of the connecting rod is directly or indirectly connected with the lock head assembly; one or more connecting rods are arranged and correspond to the lock head assemblies one by one; preferably, the number of the connecting rods is an even number not less than 2; half of the connecting rods are positioned above the handle, and the other half of the connecting rods are positioned below the handle; the connecting rod above the handle and the connecting rod below the handle are distributed in a central symmetry manner with respect to the first opening.

Optionally, in the fire protection enclosure as described above, the connecting rod comprises a rod body, a movable rod head and a rod head nut; the rod body is in threaded connection with the movable rod head; the rod head nut is arranged on the rod body and connected with the movable rod head.

Optionally, in the fireproof protection sealing, one end of the rod body is in threaded connection with the movable rod head, and the other end of the rod body is provided with the fixed rod head; the movable rod head or the fixed rod head is hinged with the second opening.

Optionally, in the fire protection enclosure as described above, the lock cylinder assembly is hinged to the transmission mechanism.

Optionally, in the fire-proof protection enclosure as described above, further comprising: the transmission mechanism is connected with the lock head assembly through the plectrum assembly; the shifting piece assembly comprises a fixed shaft, a lock head shifting piece, a shifting piece retainer ring, a fastening nut and a nut split pin; the fixed shaft is arranged on the door leaf and used for providing an installation position; the lock head shifting piece is rotatably connected with the fixed shaft, one end of the lock head shifting piece is hinged with the transmission mechanism, and the other end of the lock head shifting piece is sleeved on the lock head assembly; the shifting piece retainer ring is arranged on the fixed shaft and connected with the lock head shifting piece, and the fastening nut is arranged on the fixed shaft and connected with the shifting piece retainer ring; the nut cotter pin is mounted on the fastening nut; preferably, the lock head plectrum is further provided with a limiting device which is used for abutting against the lock head assembly during action, the limiting device comprises a limiting bolt and a limiting nut, the limiting bolt is in threaded connection with the lock head plectrum, and the limiting nut is in threaded connection with the limiting bolt; a shifting sheet copper sleeve is arranged at the rotatable connection part of the locking head shifting sheet and the fixed shaft; and the two sides of the lock head shifting piece are provided with shifting piece adjusting gaskets which are arranged on the fixed shaft.

Optionally, in the fire protection enclosure as described above, the adhesive tape groove is annular, comprising: the first sub-adhesive tape groove and the second sub-adhesive tape groove; the door leaf includes: the door leaf body is of a steel structure and is provided with a cavity, and a first heat insulation material is filled in the cavity; the inner supporting plate is annular and is arranged on the inner side surface of the door leaf body along the circumferential direction of the door leaf body; the flat steel is annular, is arranged on the inner side surface of the door leaf body and is positioned on the outer side of the inner supporting plate; the door leaf plate is positioned in an annular space formed by the inner supporting plate, and a second heat-insulating material is filled between the door leaf plate and the door leaf body; the ribbed plates are connected between the flat steels of the inner supporting plate; the outer supporting plate is in an inverted U shape, is arranged on the inner side surface of the door leaf body and is positioned on the outer side of the flat steel, and the first sub-adhesive tape groove is formed between the outer supporting plate and the flat steel; and the upper surface of the bottom plate, which is close to the mounting end of the bottom plate, is connected with the lower surface of the door leaf body, the free end of the bottom plate is suspended, and the second sub-adhesive tape groove is formed between the free end of the bottom plate and the flat steel.

Optionally, in the fire-proof containment as described above, the height of the inner supporting plate relative to the door leaf body is equal to the height of the outer supporting plate relative to the door leaf body; the height of the flat steel relative to the door leaf body is lower than that of the inner supporting plate relative to the door leaf body; the inner supporting plate and the outer supporting plate are perpendicular to the door leaf body, the cross sections of the first sub-adhesive tape groove and the second sub-adhesive tape groove are both in a right trapezoid shape, the diameter of the opening end of the first sub-adhesive tape groove is smaller than that of the bottom end of the first sub-adhesive tape groove, and the diameter of the opening end of the second sub-adhesive tape groove is smaller than that of the bottom end of the second sub-adhesive tape groove.

Optionally, in the fire-proof protective enclosure as described above, the number of the hinges is two, and the two hinges respectively include, in the vertical direction: an upper hinge and a lower hinge; the upper hinge page comprises: the upper hinged support is arranged on one side of the door frame; the rotating end of the upper hinge lug is hinged with the upper hinge base through a first bearing and a first hinge shaft, the connecting end of the upper hinge lug is connected with the door leaf body, and the first bearing is a self-aligning roller bearing; the lower hinge comprises: the lower hinged support is arranged on one side of the door frame; the rotating end of the lower hinge lug is hinged with the lower hinge seat through a second bearing and a second hinge shaft, and the connecting end of the lower hinge lug is connected with the door leaf body; the bearing pad is arranged below the bearing inner ring of the second bearing and between the lower mounting arm of the lower hinged support; wherein the second bearing is a tapered roller bearing.

Optionally, in the fire-proof protection enclosure as described above, further comprising: the reinforcing rod is vertically arranged in the door leaf body, one end of the reinforcing rod is connected with the upper hinge lug, and the other end of the reinforcing rod is connected with the lower hinge lug.

Optionally, in the fire protection enclosure as described above, the upper hinge further comprises: the first inner plate and the upper hinge base; the front surface of the first inner plate is sequentially connected with the rear surface of the door frame and the rear surface of the upper hinge base along the horizontal direction; the front surface of the upper hinge base is connected with the upper hinge base, and the thickness of the upper hinge base is equal to that of angle steel forming the door frame; the lower hinge comprises: the second inner plate and the lower hinge base; the front surface of the second inner plate is sequentially connected with the rear surface of the door frame and the rear surface of the lower hinge base along the horizontal direction; the front surface of the lower hinge base is connected with the lower hinge base, and the thickness of the lower hinge base is equal to that of angle steel forming the door frame.

Optionally, in the fire-protection enclosure as described above, right ends of the upper hinge base and the lower hinge base are respectively suspended in the air with respect to the first inner plate and the second inner plate.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

through installing the base on the door leaf, the handle is installed on the base, and drive mechanism one end links to each other with the handle, and the other end links to each other with the tapered end subassembly of installing on the door leaf, thereby tapered end subassembly can link to each other with the door frame locking or unblock door leaf. One end of the transmission mechanism is connected with the handle, and the other end of the transmission mechanism can be connected with the plurality of lock head assemblies, so that the handle can simultaneously control the unlocking or locking of the plurality of lock head assemblies, the locking effect is improved, and the firmness and the reliability during locking are improved. The lock head assembly is provided with a return spring and can automatically return; the locking copper sleeve and the guide key are arranged, so that the movement precision can be improved; the oil cup is arranged, so that the abrasion of the locking copper sleeve and the locking head can be reduced. The length of the connecting rod of the transmission mechanism is adjustable, so that the assembly difficulty can be reduced; the quantity of connecting rod can set up in a flexible way, can select the use quantity of tapered end subassembly according to actual demand, reaches the purpose of a plurality of tapered end subassemblies of handle drive. The lock head assembly and the transmission mechanism can be directly connected or indirectly connected, and the implementation scheme can be enriched. The fireproof protective airtight door for the high-speed railway and the subway tunnel has excellent fireproof airtight performance.

Drawings

Fig. 1 is a schematic installation diagram of a locking device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view at A-A of FIG. 1;

FIG. 3 is a cross-sectional view at B-B of FIG. 1;

FIG. 4 is a cross-sectional view at C-C of FIG. 1;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 4;

fig. 6 is a schematic structural view of a single-leaf steel structure fireproof protective airtight door for a high-speed railway and a subway tunnel provided by an embodiment of the utility model;

fig. 7 is a schematic cross-sectional view of a fire-resistant sealing strip according to an embodiment of the present invention;

fig. 8 is a schematic front view of an upper hinge according to an embodiment of the present invention;

fig. 9 is a schematic front view of a bottom hinge according to an embodiment of the present invention;

fig. 10 is a schematic top view of an upper hinge according to an embodiment of the present invention;

fig. 11 is a schematic front view of a door frame according to an embodiment of the present invention;

FIG. 12 is a schematic view of FIG. 11 taken along line E;

FIG. 13 is a cross-sectional view at F-F of FIG. 11;

fig. 14 is a schematic front view of a door leaf according to an embodiment of the present invention;

FIG. 15 is a cross-sectional view at G-G of FIG. 14;

FIG. 16 is a cross-sectional view at H-H in FIG. 14;

in the figure: 1, a lock head assembly; 101 a locking seat; 102 a latch head; 103 a return spring; 104 a locking washer; 105 locking the copper sleeve; 106 a guide key; 2, a plectrum component; 201 lock head plectrum; 202 shifting sheet copper sleeve; 203 fixing a shaft; 204 plectrum adjusting shim; 205 fastening a nut; 206 nut cotter pins; 207 a pick collar; 3, a transmission mechanism; 301 a swing arm plate; a 302 rod body; 303 a movable club head; 4, a base; 401 a first mounting plate; 402 a second mounting plate; 403 shaft sleeve; 5, door leaves; 51 an inner support plate; 52 flat steel, 53 door leaf plates, 54 ribbed plates, 55 outer supporting plates, 56 bottom plates, 57 first heat insulation materials, 58 second heat insulation materials and 591 first sub-adhesive tape grooves; 592 a second sub-strip groove; 590 fire-proof sealing strip; 6, a handle; 601 a first outer handle; 602 a second outer handle; 603 an inner handle; 604 a bearing; 605 a bearing retainer ring; 606 retaining ring nuts; 607 a set screw; 71, hinging up the page; 711, hinging and seating; 712, hinging the ear; 713 a first bearing; 714 a first hinge shaft; 715 upper hinge base; 716 a first inner panel; 72, hinging the page downwards; 721 a lower hinge base; 722 lower hinge eyes; 723 a second bearing; 724 a second hinge shaft; 725 bearing pads; 726 adjusting the shim; 727 reinforcing rods; 728 lower hinge bases; 8, a door frame; 80 angle steel; 81 a first embedded pressing strip; 82 embedding a pressing plate; 820 a second embedded pressing strip; 83 locking the box.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", 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 of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; can be directly connected or indirectly connected through intermediate components; the specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 ~ 16, the embodiment of the utility model provides a high-speed railway and subway tunnel single-leaf steel construction fire prevention protective airtight door, it includes: a door frame 8, a hinge, a door leaf 5, a fireproof sealing strip 509 and a linkage latch.

The door frame 8 is arranged at a door opening or in a tunnel, such as a high-speed railway or a subway tunnel, and is provided with an upper horizontal part and a lower horizontal part which are arranged oppositely, and a left vertical part and a right vertical part which are arranged oppositely, wherein the upper horizontal part, the left vertical part and the right vertical part are provided with a first embedded pressing strip 81 in an inverted U shape, the upper surface of the lower horizontal part is provided with an embedded pressing strip 82, the free end of the embedded pressing strip 82 extends towards the outer side of the door frame and is suspended relative to the door frame to form a second embedded pressing strip 820, the second embedded pressing strip 820 is horizontally arranged and is connected with the first embedded pressing strip 81 end to form an annular structure, and four corners of the annular structure are in arc transition connection, so that when the door sill formed by the door frame 8 is short (for example, 50 mm. All parts of the door frame can be sequentially connected by angle steel to form a ring. The hinge is located on one side of the doorframe 8, the right side in fig. 6. The door leaf 5 is formed with a strip groove for embedding the fireproof sealing strip 509, and the fireproof sealing strip 509 may be a fireproof expansion rubber strip. The door leaf is hinged to the door frame by a hinge to allow the door leaf to rotate about a vertical axis on one side of the door frame. When the fireproof protective airtight door is closed, the first embedded pressing strip and the second embedded pressing strip are inserted into the rubber strip groove, the fireproof sealing strip is extruded, and sealing of the fireproof protective airtight door is achieved. The linkage latch includes: base 4, handle 6, drive mechanism 3 and tapered end subassembly 1. The base 4 and the lock head assembly 1 are arranged on the door leaf 5; the handle 6 is arranged on the base 4; the transmission mechanism 3 is respectively connected with the handle 6 and the lock head assembly 1.

Specifically, base 4 is installed on door leaf 5, and handle 6 is installed on base 4, and 3 one end of drive mechanism links to each other with handle 6, and the other end links to each other with the tapered end subassembly 1 of installing on door leaf 5, thereby tapered end subassembly 1 can link to each other with the shutting on the door frame locking or unblock door leaf 5. One end of the transmission mechanism 3 is connected with the handle 6, and the other end of the transmission mechanism can be connected with the plurality of lock head assemblies 1, so that the handle 6 can control the unlocking or locking of the plurality of lock head assemblies 1 simultaneously, the locking effect is improved, and the firmness and the reliability during locking are improved.

Further, as shown in fig. 1, 4 and 5, in the present invention, the base 4 includes a first mounting plate 401, a second mounting plate 402 and a shaft sleeve 403; the first mounting plate 401 and the second mounting plate 402 are respectively installed on the inner side and the outer side of the door leaf 5, preferably, the first mounting plate 401 is installed below the inner surface of the door leaf 5, and the second mounting plate 402 is installed below the outer surface of the door leaf 5, that is, both the first mounting plate 401 and the second mounting plate 402 are installed inside the door leaf 5. The shaft sleeve 403 is installed in the door leaf 5, and has one end penetrating through the first mounting plate 401 and fixedly connected with the first mounting plate 401, for example, welded connection or interference fit connection, and the other end penetrating through the second mounting plate 402 and fixedly connected with the second mounting plate 402, for example, welded connection or interference fit connection. The first mounting plate 401, the second mounting plate 402 and the bushing 403 are combined into a whole, which can provide mounting and rotating space for the rotating movement of the handle 6.

The handle 6 is mounted in the base 4, in particular in the sleeve 403, in rotatable connection with the sleeve 403. The handle 6 includes a first outer handle 601, a second outer handle 602, and an inner handle 603; the first outer handle 601 and the second outer handle 602 are respectively connected with an inner handle 603, and the inner handle 603 is installed in the shaft sleeve 403 of the base 4 and is rotatably connected with the shaft sleeve 403. In the rotatable connection scheme, preferably, the inner handle 603 is rotatably connected with the shaft sleeve 403 through a bearing 604, that is, the inner handle 603 and the shaft sleeve 403 are movably connected through a mounting bearing 604, and meanwhile, in order to balance the loads at two ends when the handle 6 rotates, two bearings 604 are respectively sleeved at two ends of the inner handle 603, and are connected with the shaft sleeve 403 through the two bearings 604.

The utility model discloses a handle 6 includes first outer handle 601, the outer handle 602 of second and interior handle 603, and handle 6 is whole to be the U type, is convenient for operate from the inside and outside both sides of door leaf 5 when installing on base 4. In order to facilitate the installation of the handle 6 on the base 4, the connection between the first outer handle 601, the second outer handle 602 and the inner handle 603 is realized by clamping and fastening. Specifically, interior handle 603 is equipped with the polygon tip, and the polygon tip alternates in first outer handle 601, is connected with first outer handle 601 joint to can realize rotating with first outer handle 601 is synchronous. Be equipped with set screw 607 on first outer handle 601, set screw 607 and polygon tip threaded connection to can guarantee the fastness of being connected in interior handle 603 axis direction between first outer handle 601 and the interior handle 603. Preferably, the polygonal end is a regular polygon, which is convenient for processing and manufacturing, and the polygonal end is provided with a taper along the axial direction, which is convenient for inserting into the first outer handle 601.

When implementing, in order to reduce assembly work load, interior handle 603 links to each other with first outer handle 601 through polygon tip, and second outer handle 602 is the integral type structure with interior handle 603 to can remove the assembly link between second outer handle 602 and the interior handle 603, reduce simultaneously the utility model discloses a spare part total amount. Specifically, when the device is installed, a bearing retainer ring 605 is installed between a bearing 604 close to the second outer handle 602 and the second outer handle 602, one end of the bearing retainer ring 605 abuts against the second outer handle 602, and the other end abuts against the bearing 604; a bearing retainer ring 605 and a retainer ring nut 606 are arranged between the polygonal end part and the bearing 604, one end of the bearing retainer ring 605 abuts against the bearing 604, the other end of the bearing retainer ring 605 abuts against the retainer ring nut 606, and the retainer ring nut 606 is in threaded connection with the inner handle 603 and can play a role in fixing the bearing 604.

Further, as shown in fig. 1 and 2, the cylinder assembly 1 includes a locking socket 101, a locking head 102 and a return spring 103; the locking seat 101 is installed on the door leaf 5, specifically on the inner side of the door leaf 5, and can provide installation positions for the locking head 102 and the return spring 103; the locking head 102 is installed in the locking seat 101 and is in sliding fit with the locking seat 101, so that locking and unlocking can be realized; the return spring 103 is installed in the locking seat 101, one end of the return spring is connected to the locking seat 101, the other end of the return spring is connected to the locking head 102, and the return spring 103 is always in a compressed state in the locking seat 101, so that the return power can be provided for the locking head 102 (the return means that the return spring 103 can enable the locking head 102 to be in a locking state under the action of elastic force).

Preferably, a locking pad 104 is disposed between the locking seat 101 and the door 5, and by adjusting the thickness of the locking pad 104, the installation position of the locking seat 101 on the inner side of the door 5, that is, the distance between the locking seat 101 and the inner surface of the door 5, and thus the installation position of the locking head 102, can be adjusted. Further, a locking pad 109 is disposed between the locking pad 104 and the door 5, the thickness of the locking pad 109 is greater than the thickness of the locking pad 104, and may be N times the thickness of the locking pad 104, where N is a positive number greater than or equal to 1, such as 2, 3, 4, 5, 6, and 7, so that the installation position of the locking head 102 can be roughly adjusted by the locking pad 109, and the installation position of the locking head 102 can be finely adjusted by the locking pad 104.

Meanwhile, in order to facilitate smooth operation of the lock head assembly 1, a locking copper sleeve 105 is arranged at the sliding fit position of the locking head 102 in the locking seat 101, and the locking copper sleeve 105 is installed in the locking seat 101 in an interference fit mode and is in sliding fit with the locking head 102, so that the precision of the locking head 102 during translation can be improved. To facilitate the entry and exit of the latch head 102 into and out of the lock case 83 (or lock hole), the end of the latch head 102 that engages the lock hole is wedge-shaped. In order to ensure the translational precision of the locking head 102 and prevent the locking head 102 from twisting during translational motion, the utility model discloses be equipped with the guide key 106 on the locking head 102, the guide key 106 is connected with the locking head 102 interference fit to with the sliding fit of locking seat 101, can provide sliding guide for the locking head 102. As a maintenance structure of the latch head assembly 1, an oil cup is provided on the latch base 101, and oil can be injected between the latch base 101 and the latch head 102, so that oil lubrication or grease lubrication is constantly maintained between the latch base 101 (the latch copper 105 on the latch base 101) and the latch head 102, and wear of the latch copper 105 and the latch head 102 is reduced.

Further, as shown in fig. 1, the transmission mechanism 3 includes a pivotal arm plate 301 mounted on the handle 6 and a connecting rod connected to the pivotal arm plate 301; the swing arm plate 301 comprises a first opening and a second opening, the handle 6 is inserted into the first opening and is in interference fit with the first opening, one end of the connecting rod is rotatably connected with the second opening, and the other end of the connecting rod is directly or indirectly connected with the lock head assembly 1. When the locking head is used, the rotating arm plate 301 is driven to rotate through the handle 6, the rotating arm plate 301 drives the connecting rod to move, and then the locking head 102 is driven to leave the locking hole; when the first outer handle 601 and/or the second outer handle 602 do not receive force directly, the return spring 103 drives the locking head 102 to return, and thus the handle 6 is driven to return through the connecting rod.

For the convenience of assembly, the connecting rod comprises a rod body 302, a movable rod head 303 and a rod head nut; the body of rod 302 and activity pole head 303 threaded connection, through adjusting the length of pole body 302 and activity pole head 303 threaded connection, can finely tune the length of connecting rod to can eliminate the assembly problem that assembly error and/or manufacturing error brought, reduce the assembly degree of difficulty. Simultaneously, for the length of messenger's connecting rod remains unchanged after the assembly, the utility model discloses a mode of two nut fastenings locks the length of connecting rod, and head nut installs on body of rod 302 promptly to link to each other with activity pole head 303, head nut supports and leans on activity pole head 303, thereby forms the fastening structure of two nut fastenings together with activity pole head 303. In practice, one connecting rod may be provided with one movable rod head 303, or two movable rod heads 303. Preferably, one connecting rod is provided with a movable rod head 303, one end of the rod body 302 is in threaded connection with the movable rod head 303, and the other end of the rod body 302 is provided with a fixed rod head, so that the assembly workload can be reduced. The movable rod head 303 or the fixed rod head is hinged with the second opening.

In the embodiment, the number of the connecting rods may be one or more. When the connecting rod is one, a handle 6 corresponds a connecting rod, corresponds a tapered end subassembly 1 simultaneously, and a handle 6 drives a tapered end subassembly 1 promptly, can lock door leaf 5 at a side of door leaf 5. When the connecting rod is a plurality of, a handle 6 corresponds a plurality of connecting rods and a plurality of tapered end subassembly 1, and the quantity of connecting rod and tapered end subassembly 1 equals, the one-to-one, a handle 6 drives a plurality of tapered end subassemblies 1 action this moment, can lock door leaf 5 at a side of door leaf 5, also can lock door leaf 5 at two sides of door leaf 5, can also lock door leaf 5 at three side or four sides of door leaf 5.

Preferably, the number of the connecting rods is an even number not less than 2; half of the connecting rods are positioned above the handle 6, and the other half of the connecting rods are positioned below the handle 6; the connecting rod above the handle 6 and the connecting rod below the handle 6 are distributed in central symmetry with respect to the first opening, so that the door leaf 5 is stressed evenly when being locked.

Further, as shown in fig. 1 to 5, the lock cylinder assembly 1 and the transmission mechanism 3 may be directly connected or indirectly connected. When the locking head is directly connected with the handle 6, the transmission mechanism 3 is driven to act by the handle 6, so that the locking head 102 is driven to act by the transmission mechanism 3; when indirectly connected, the handle 6 drives the actuator 3, which in turn drives the locking head 102 via the medium, to move the actuator 3.

As an embodiment in which the lock cylinder assembly 1 is directly connected to the transmission mechanism 3, as shown in fig. 1 to 5, the lock cylinder assembly 1 is hingedly connected to the transmission mechanism 3. In an embodiment, the rotating arm plate 301 is mounted on the second outer handle 602, and is snap-fitted to the second outer handle 602 to rotate synchronously with the rotation of the handle 6 along the axial direction of the inner handle 603. One end of the connecting rod is hinged with the rotating arm plate 301, and the other end is hinged with the locking head 102. When the locking head is used, the handle 6 drives the rotating arm plate 301 to rotate, and the rotating arm plate 301 drives the connecting rod to move, so that the locking head 102 is driven to translate to the position of the connecting rod.

As the implementation scheme that the lock head assembly 1 is indirectly connected with the transmission mechanism 3, the lock head assembly 1 is indirectly connected with the transmission mechanism 3 through the shifting piece assembly 2. The plectrum assembly 2 comprises a fixed shaft 203, a lock head plectrum 201, a plectrum retainer ring 207, a fastening nut 205 and a nut cotter pin 206; the fixed shaft 203 is arranged on the door leaf 5 and can provide an installation position; the lock pick 201 is rotatably connected with the fixed shaft 203, one end of the lock pick is hinged with the transmission mechanism 3, the other end of the lock pick is sleeved on the locking head 102 of the lock assembly 1, and the locking head 102 can be pulled so as to enable the locking head 102 to move horizontally; the shifting block retainer ring 207 is arranged on the fixed shaft 203, is connected with the lock head shifting block 201, and can limit the lock head shifting block 201 in the axial direction of the fixed shaft 203; the fastening nut 205 is arranged on the fixed shaft 203, is in threaded connection with the fixed shaft 203, is connected with the shifting sheet retainer ring 207, and can limit the shifting sheet retainer ring 207; the nut cotter pin 206 is attached to the fastening nut 205, and can lock the fastening nut 205.

Preferably, the lock pick 201 is further provided with a limiting device which can abut against the lock assembly 1 during action to prevent the return spring 103 from being excessively compressed to reduce the fatigue life. The limiting device comprises a limiting bolt and a limiting nut, the limiting bolt is in threaded connection with the lock head shifting piece 201, and the limiting nut is in threaded connection with the limiting bolt and can lock the limiting bolt. During installation, the longest translational distance of the locking head 102 during action can be adjusted by adjusting the extension length of the limit bolt on the lock head plectrum 201, so that the maximum compression amount of the return spring 103 during use can be adjusted.

Meanwhile, in order to improve the motion precision of the lock head shifting piece 201 and reduce abrasion, a shifting piece copper sleeve 202 is arranged at the rotatable connection part of the lock head shifting piece 201 and the fixed shaft 203. In order to facilitate the adjustment of the length of the lock pick 201 from the inner surface of the door leaf 5, the utility model discloses in, the both sides of the lock pick 201 are equipped with pick adjusting gasket 204, and pick adjusting gasket 204 is installed on the fixed axle 203, can adjust the position of the lock pick 201 to can make the lock pick 201 and the locking head 102, the transmission mechanism 3 move in a plane, operate smoothly laborsavingly.

It should be noted that, in the hinge connection of the present invention, the movable rod head 303, the rotating arm plate 301, the lock pick 201, the fixed rod head, and the locking head 102 are all connected in series by the pin when hinged, and then are locked on the pin by the split pin (the split pin is shown by the short line segment in fig. 3 and fig. 4), so as to realize the hinge connection.

The adhesive tape groove includes: a first sub-strip groove 591 and a second sub-strip groove 592 connected end to form a loop. The door leaf includes: the door comprises a door body, an inner supporting plate 51, flat steel 52, a door plate 53, a rib plate 54, an outer supporting plate 55 and a bottom plate 56. The door leaf body is the steel construction, is formed with first cavity in it, and it has first thermal insulation material 57 to fill in the first cavity, for example: an aluminum silicate fiber blanket. Specifically, the door leaf body includes: the steel plate comprises longitudinal channel steel, transverse I-shaped steel, longitudinal I-shaped steel, an inner panel and an outer panel. The door leaf framework is characterized in that the number of the longitudinal channel steel and the number of the transverse channel steel are two, the two longitudinal channel steel and the two transverse channel steel are connected to form a ring, such as a rectangle, transverse I-shaped steel is transversely connected in a space formed by the ring, longitudinal I-shaped steel is longitudinally connected, and the longitudinal I-shaped steel and the transverse I-shaped steel are in cross connection to form a cross beam, so that the door leaf framework is formed. The inner panel is arranged on the inner side surface of the door leaf framework, and the outer panel is arranged on the outer side surface of the door leaf framework. The inner support plate 51, the flat steel 52 and the outer support are all annular, such as rectangular, and are all arranged on the inner side surface of the door leaf body along the circumferential direction of the door leaf body. The flat steel 52 is located between the inner support plate 51 and the outer support. The rib 54 is located between and connected to the inner support plate 51 and the flat bar 52, so that the strength of the inner support plate and the flat bar can be improved. The outer support includes: outer support plate 55 and bottom plate 56. The outer support plate 55 is in an inverted U shape and is arranged on the inner side surface of the door leaf body, and a first sub-adhesive tape groove 591 is formed between the outer support plate 55 and the flat steel 52. The upper surface of the connecting end of the bottom plate 56 is connected with the lower surface of the door leaf body, and the free end of the bottom plate 56 is suspended relative to the door leaf body, so that a second sub-adhesive-tape slot 592 is formed between the free end and the flat steel 52.

Because the door leaf body is the steel construction, easy heat conduction, in order to improve this fire prevention protective airtight door's heat-proof quality, the door leaf still includes: and a door leaf 53 which is positioned in an annular space formed by the inner support plate 51, and a second cavity is formed between the door leaf and the inner support plate 51, a second heat insulating material 58, such as aluminum silicate fiber felt, is filled in the cavity, and the thickness of the second cavity is smaller than that of the first cavity.

The height of the inner supporting plate 51 relative to the door leaf body is equal to that of the outer supporting plate 55 relative to the door leaf body, the height of the flat steel 52 relative to the door leaf body is lower than that of the inner supporting plate 51 relative to the door leaf body, the inner supporting plate 51 and the outer supporting plate 55 are both perpendicular to the door leaf body, the cross sections of the first sub-rubber strip groove 591 and the second sub-rubber strip groove 591 are both right-angled trapezoids, and the diameter of the opening end of each sub-rubber strip groove is smaller than that of the bottom end of the sub-rubber strip groove.

The quantity of hinge page or leaf is two, and two hinge pages or leaves do along vertical direction respectively: an upper hinge leaf 71 and a lower hinge leaf 72. The upper hinge leaf 71 includes: an upper hinge mount 711 and an upper hinge lug 712. The upper hinge seat 711 is provided at one side of the door frame 8. The rotating end of the upper hinge lug 712 is hinged to the upper hinge base 711 through a first bearing 713 and a first hinge shaft 714, the connecting end of the upper hinge lug 712 is connected with the door leaf body, for example, welded, and the first bearing 713 is a self-aligning roller bearing for aligning the door leaf body. The lower hinge 72 includes: a lower hinge mount 721, a lower hinge ear 722, and a bearing pad 725. The lower hinge seat 721 is provided at one side of the door frame 8. The rotating end of the lower hinge lug 722 is hinged with the lower hinge seat 721 through a second bearing 723 and a second hinge shaft 724, and the connecting end of the lower hinge lug 722 is connected with the door leaf body. Such as welding. The bearing pad 725 is arranged below the bearing inner ring of the second bearing 723 and between the lower mounting arms of the lower hinge support 721, the second bearing 723 is a tapered roller bearing and is used for bearing the load of the door leaf body, and therefore the central lines of the upper hinge lug and the lower hinge lug are on the same straight line and parallel to the central line of the door leaf body and the central line of the door frame 8 in use.

In order to improve the joint strength of upper and lower hinge page and door leaf body, this fire prevention protective airtight door still includes: a stiffener 727 vertically disposed within the door leaf body. One end of the stiffener 727 is connected with the upper hinge lug 712, and the other end of the stiffener 727 is connected with the lower hinge lug 722, the connection mode can be that vertical through holes are respectively arranged on the upper hinge lug 712 and the lower hinge lug 722, and two ends of the stiffener 727 are respectively positioned in the two through holes and then welded. The stiffener 727 may be rebar.

The upper hinge leaf 71 further includes: a first inner plate 716 and an upper hinge base 715. The front surface of the first inner plate 716 is connected to the rear surface of the door frame 8, i.e., the inner surface of the angle iron 80, and the rear surface of the upper hinge base 715 in turn in the horizontal direction. The front surface of the upper hinge base 715 is connected with the upper hinge base 711, the thickness of the upper hinge base 715 is equal to the thickness of the angle steel forming the door frame 8, and at the moment, the upper hinge base 715 is flush with the door frame 8. The lower hinge 72 includes: a second inner plate and a lower hinge base 728. The front surface of the second inner panel is connected to the rear surface of the door frame 8 (i.e., the inner surface of the angle iron) and the rear surface of the lower hinge base 728 in this order in the horizontal direction. The front surface of the lower hinge base 728 is connected with the lower hinge base 721, the thickness of the lower hinge base 728 is equal to the thickness of the angle steel forming the door frame 8, and at the moment, the lower hinge base 728 is flush with the door frame 8, so that the connection strength of the concrete around the upper hinge leaf 71, the lower hinge leaf 72 and the door frame 8 can be improved, and the door leaf body can be stably supported. The above-mentioned connection means may be a bolt connection.

The right ends of the upper hinge base 715 and the lower hinge base 728 are suspended with respect to the first inner plate 716 and the upper hinge base 715 and the second inner plate and the lower hinge base 728, respectively. In use, the upper hinge base 715 and the lower hinge base 728 contact the concrete wall, thus improving the stability of the connection. Adjusting gaskets 726 can be respectively arranged between the upper hinge base 715 and the upper hinge base 711 and between the lower hinge base 728 and the lower hinge base 721 to adjust the central lines of the upper hinge lug and the lower hinge lug to be in the same plane with the central line of the door body.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims (10)

1. The utility model provides a high-speed railway and subway tunnel single leaf steel construction fire prevention protection airtight door, its characterized in that, single leaf steel construction fire prevention protection airtight door includes: the door comprises a door frame, a hinge, a door leaf, a fireproof sealing strip and a linkage latch lock;

the door frame is provided with an upper horizontal part and a lower horizontal part which are arranged oppositely, and a left vertical part and a right vertical part which are arranged oppositely, the upper horizontal part, the left vertical part and the right vertical part are provided with first embedded pressing strips, the upper surface of the lower horizontal part is provided with an embedded pressing plate, and the free end of the embedded pressing plate extends towards the outer side of the door frame and is suspended relative to the door frame to form a second embedded pressing strip;

the hinge is positioned on one side of the door frame;

the door leaf is a steel structure door leaf, an adhesive tape groove for embedding the fireproof sealing strip is formed in the door leaf, and the door leaf is hinged with the door frame through the hinge so that the door leaf rotates relative to the door frame;

the linkage latch includes: the lock comprises a base, a handle, a transmission mechanism and a lock head assembly;

the base and the lock head assembly are arranged on the door leaf;

the handle is mounted on the base;

the transmission mechanism is respectively connected with the handle and the lock head assembly.

2. The single-leaf steel structured fire-proof protective airtight door of claim 1,

the lock head assembly comprises a locking seat, a locking head and a return spring;

the locking seat is arranged on the door leaf; the locking head is arranged in the locking seat and is in sliding fit with the locking seat; the reset spring is installed in the locking seat, one end of the reset spring is connected with the locking seat, and the other end of the reset spring is connected with the locking head.

3. The single-leaf steel structured fire-proof protective airtight door of claim 2,

a locking gasket is arranged between the locking seat and the door leaf and used for adjusting the installation position of the locking seat;

a locking copper sleeve is arranged in the locking seat and is in sliding fit with the locking head;

one end of the locking head is a wedge-shaped end, and the wedge-shaped end is used for being inserted into a lock hole formed in the door frame;

the locking head is provided with a guide key, and the guide key is in sliding fit with the locking seat and used for providing sliding guide for the locking head.

4. The single-leaf steel structured fire-proof protective airtight door of claim 1,

the transmission mechanism comprises a rotating arm plate arranged on the handle and a connecting rod connected with the rotating arm plate;

the rotating arm plate comprises a first opening and a second opening, the handle is inserted into the first opening, one end of the connecting rod is rotatably connected with the second opening, and the other end of the connecting rod is directly or indirectly connected with the lock head assembly; the connecting rod is one or more, and with the tapered end subassembly one-to-one corresponds.

5. The single-leaf steel structure fireproof protective airtight door of claim 4,

the connecting rod comprises a rod body, a movable rod head and a rod head nut;

the rod body is in threaded connection with the movable rod head; the rod head nut is arranged on the rod body and connected with the movable rod head;

one end of the rod body is in threaded connection with the movable rod head, and the other end of the rod body is provided with a fixed rod head;

the movable rod head or the fixed rod head is hinged with the second opening.

6. The single-leaf steel structure fireproof protective airtight door of any one of claims 1 to 5,

the lock head assembly is hinged with the transmission mechanism.

7. The single-leaf steel structured fire-resistant protective containment door as recited in any one of claims 1 to 5, further comprising,

the transmission mechanism is connected with the lock head assembly through the plectrum assembly;

the shifting piece assembly comprises a fixed shaft, a lock head shifting piece, a shifting piece retainer ring, a fastening nut and a nut split pin;

the fixed shaft is arranged on the door leaf and used for providing an installation position; the lock head shifting piece is rotatably connected with the fixed shaft, one end of the lock head shifting piece is hinged with the transmission mechanism, and the other end of the lock head shifting piece is sleeved on the lock head assembly; the shifting piece retainer ring is arranged on the fixed shaft and connected with the lock head shifting piece, and the fastening nut is arranged on the fixed shaft and connected with the shifting piece retainer ring; the nut cotter pin is mounted on the fastening nut.

8. The single-leaf steel structured fire-proof protective containment door of claim 7,

the lock head shifting piece is also provided with a limiting device which is used for abutting against the lock head assembly when in action, the limiting device comprises a limiting bolt and a limiting nut, the limiting bolt is in threaded connection with the lock head shifting piece, and the limiting nut is in threaded connection with the limiting bolt;

a shifting sheet copper sleeve is arranged at the rotatable connection part of the locking head shifting sheet and the fixed shaft;

and the two sides of the lock head shifting piece are provided with shifting piece adjusting gaskets which are arranged on the fixed shaft.

9. The single-leaf steel structured fire-proof protective airtight door of claim 1,

the number of hinge pages is two, and two hinge pages are respectively along vertical direction: an upper hinge and a lower hinge;

the upper hinge page comprises:

the upper hinged support is arranged on one side of the door frame;

the rotating end of the upper hinge lug is hinged with the upper hinge base through a first bearing and a first hinge shaft, the connecting end of the upper hinge lug is connected with the door leaf, and the first bearing is a self-aligning roller bearing;

the lower hinge comprises:

the lower hinged support is arranged on one side of the door frame;

the rotating end of the lower hinge lug is hinged with the lower hinge seat through a second bearing and a second hinge shaft, and the connecting end of the lower hinge lug is connected with the door leaf;

the bearing pad is arranged below the bearing inner ring of the second bearing and between the lower mounting arm of the lower hinged support;

wherein the second bearing is a tapered roller bearing.

10. The single-leaf steel structure fire-resistant protective containment door of claim 9, further comprising: the reinforcing rod is vertically arranged in the door leaf, one end of the reinforcing rod is connected with the upper hinge lug, and the other end of the reinforcing rod is connected with the lower hinge lug.

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