WO2021174831A1

WO2021174831A1 - Single-leaf concrete fireproof protective closed door for high-speed railway and subway tunnels

Info

Publication number: WO2021174831A1
Application number: PCT/CN2020/118585
Authority: WO
Inventors: 解峰; 王阳明; 胡圣伟; 农兴中; 熊科; 贾彦明; 张德军; 张伟; 赵俊龙; 刘军舰; 曾程亮; 苗朋厚; 崔艳斌; 马小娇; 张正一; 张新浩
Original assignee: 广州地铁设计研究院股份有限公司
Priority date: 2020-03-18
Filing date: 2020-09-28
Publication date: 2021-09-10
Also published as: JP2022532956A; JP7196342B2

Abstract

A single-leaf concrete fireproof protective closed door for high-speed railway and subway tunnels, comprising: a door frame (8) provided in a tunnel; hinges located on one side of the door frame; a door leaf (5) being a concrete door leaf and hinged to the door frame by means of the hinges; a fireproof sealing member provided on the attachment surface of the door frame and the door leaf; a linkage latch comprising a pedestal (4) and lock head assemblies (1) mounted on the door leaf, a handle (6) mounted on the pedestal, and transmission mechanisms (3) connected to the handle and the lock head assemblies, respectively; and an automatic reset device (90) comprising a base provided above the hinges, a mandrel (908) mounted on the base, and a torsion spring (903) sleeved on the outer side of the mandrel, one end of the torsion spring being an internal connection end (922) connected to the base, and the other end of the torsion spring being an external connection end (909) connected to the top surface of the door leaf. According to the closed door, the unlocking or locking of a plurality of lock head assemblies can be controlled simultaneously by one handle, thereby improving the locking effect and improving firmness and reliability during locking.

Description

High-speed railway and subway tunnel single-leaf concrete structure fireproof protection airtight door

Technical field

The invention belongs to the technical field of protection engineering, and in particular relates to a single-leaf concrete structure fireproof and protective closed door for high-speed railways and subway tunnels.

Background technique

Installing a fire door in the passage can make that when an accident occurs in the passage, such as an explosion or fire, the accident will only have a destructive effect on the passage on one side of the fire door, and hardly have a destructive effect on the passage on the other side of the fire door.

In the event of an accident, effectively closing the fire door is a key measure to avoid the expansion of the impact of the accident. In the prior art, a handle usually controls a lock to unlock or lock, that is, a lock is passed between the door leaf and the door frame. Connected to achieve the effect of locking the door, and the locking effect is not ideal.

Summary of the invention

In order to solve the above-mentioned problems, the present invention provides a single-leaf concrete structure fireproof closed door for high-speed railway and subway tunnels, which includes: a door frame, a hinge, a door leaf, a fireproof seal, a linkage latch and an automatic reset device; the door frame Set in the tunnel; the hinge is located on one side of the door frame; the door leaf is a concrete structure door leaf, and the door leaf and the door frame are hingedly connected by the hinge so that the door leaf rotates relative to the door frame; The fireproof seal is arranged on the bonding surface of the door frame and the door leaf; the linkage latch includes: a base, a handle, a transmission mechanism and a lock assembly, and the base and the lock assembly are installed On the door leaf, the handle is installed on the base, the transmission mechanism is respectively connected with the handle and the lock assembly; the automatic reset device includes: a base, a mandrel and a torsion spring, so The base is arranged above the hinge and used to carry the mandrel and the torsion spring, the mandrel is installed on the base, the torsion spring is sleeved on the outer side of the mandrel, and the One end of the torsion spring is an internal connection end connected to the base, and the other end of the torsion spring is an external end connected to the top surface of the door leaf.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, the lock head assembly includes a lock seat, a lock head and a return spring; the lock seat is installed on the door leaf; the lock head is installed on The locking seat is in sliding fit with the locking seat; the return spring is installed in the locking seat, one end is connected with the locking seat, and the other end is connected with the locking head.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, a locking gasket is provided between the locking seat and the door leaf, and the locking gasket is used to adjust the installation position of the locking seat; Inside the locking seat, a locking copper sleeve is provided at a sliding fitting position with the locking head; one end of the locking head is a wedge-shaped end, and the wedge-shaped end is used to be inserted into a lock hole provided on the door frame; A guide key is provided on the locking head, and the guide key is slidingly matched with the locking seat to provide a sliding guide for the locking head.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, the transmission mechanism includes a rotating arm plate installed on the handle and a connecting rod connected to the rotating arm plate; the rotating arm plate It includes a first opening and a second opening, the handle is inserted into the first opening, one end of the connecting rod is rotatably connected to the second opening, and the other end is connected to the lock assembly Directly or indirectly connected; the connecting rods are one or more, and correspond to the lock assembly one-to-one; preferably, the number of the connecting rods is an even number not less than 2; half of the connecting rods are located at the Above the handle, the other half of the connecting rod is located below the handle; the connecting rod located above the handle and the connecting rod located below the handle are distributed symmetrically about the center of the first opening .

In the single-leaf concrete structure fire protection airtight door as described above, preferably, the connecting rod includes a rod body, a movable head and a head nut; the rod body is threadedly connected with the movable head; the head nut Mounted on the rod body and connected with the movable head; one end of the rod body is threadedly connected with the movable head, and the other end of the rod body is provided with a fixed head; the movable head or the movable head The fixed rod head is hinged with the second opening; the lock head assembly is hinged with the transmission mechanism.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, it further includes a paddle assembly, the transmission mechanism is connected to the lock assembly through the paddle assembly; the paddle assembly includes a fixed Shaft, lock paddle, paddle retaining ring, fastening nut and nut split pin; the fixed shaft is installed on the door leaf to provide an installation position; the lock paddle and the fixed shaft are rotatable , And one end is hinged with the transmission mechanism, and the other end is sleeved on the lock assembly; the paddle retaining ring is installed on the fixed shaft and connected with the lock paddle, the A fastening nut is installed on the fixed shaft and connected with the paddle retaining ring; the nut split pin is installed on the fastening nut.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, a limit device is further provided on the lock paddle for resisting the lock assembly during operation, and the limit device includes A limit bolt and a limit nut, the limit bolt is threadedly connected to the lock paddle, and the limit nut is threadedly connected to the limit bolt; in the lock paddle, it is fixed to the The pivotable joint of the shaft is provided with a copper paddle sleeve; both sides of the lock head paddle are provided with paddle adjusting pads, and the paddle adjusting pads are installed on the fixed shaft.

In the single-leaf concrete structure fire protection airtight door as described above, preferably, the base includes a base plate, a first bracket, and a second bracket; the first bracket and the second bracket are installed on the base plate The first bracket and the second bracket are arranged in parallel; the first bracket is provided with a first mounting hole, the second bracket is provided with a second mounting hole, and the first mounting hole is used for Install the inner connection end, the second installation hole is used to install the mandrel; the base plate is provided with a first outer hole and a second outer hole; the first outer hole is provided with a hook bolt And a bolt washer, the bolt washer is a spring washer, the hook-head bolt is used to externally mount the bearing body; the second external hole is used to externally connect the insulating medium mounting member.

In the single-leaf concrete structure fire protection airtight door as described above, preferably, the mandrel includes a mandrel main body, a free end and an assembly end; the mandrel main body is used to carry the torsion spring, and the free end And the assembling ends are respectively located on both sides of the mandrel main body, and the assembling ends are installed in the second installation hole.

In the single-leaf concrete structure fire protection airtight door as described above, preferably, the assembly end is provided with an internal thread, and the internal thread is connected with an assembly bolt; between the assembly bolt and the second bracket is provided A first washer and a second washer, the first washer is connected with the second bracket, the second washer is respectively connected with the first washer and the assembly bolt, and the second washer is a spring washer.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, it further includes: an adjustment mechanism installed on the first bracket and connected with the inner connection end for adjusting the The initial torque of the torsion spring.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, the adjustment mechanism includes an adjustment shaft, a ratchet, an adjustment cover, a pawl, and a compression spring; the adjustment shaft is installed in the first mounting hole , Rotatably connected with the first mounting hole, and connected with the inner connecting end; the ratchet is installed on the adjustment shaft; the adjustment cover is installed on the first bracket, and is located on the ratchet The pawl is installed between the adjusting cover and the ratchet; the compression spring is installed between the ratchet and the pawl.

In the single-leaf concrete structure fire protection airtight door as described above, preferably, the adjustment shaft includes a bearing end, a matching portion and an extension end; the bearing end includes a polygonal column section and a bearing plate, and the ratchet is sleeved on On the polygonal column section and abut against the bearing plate; the matching portion is connected with the bearing end, is installed in the first mounting hole, and is rotatably connected with the first mounting hole; The protruding end is connected with the matching part and is located in the mandrel.

In the above-mentioned single-leaf concrete structure fireproof protection airtight door, preferably, the adjustment cover includes a cover plate and a cover body; the cover body is in a cylindrical shape and is installed above the first bracket; A cover plate is installed on the cover body, the cover plate is provided with a light hole, the cover plate is used for pressing the ratchet wheel, and the light hole is used for providing a protruding position for the polygonal column section.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, the number of the hinges is two, and the two hinges in the vertical direction are respectively: an upper hinge and a lower hinge; The upper hinge includes: an upper hinge seat, which is arranged on one side of the door frame; an upper hinge shaft, the rotating end of the upper hinge shaft is rotatably arranged on the upper hinge seat through a first bearing, the The connecting end of the upper hinge shaft is located outside the upper hinge seat and connected with the door leaf; the lower hinge includes: a lower hinge seat located below the upper hinge seat; a lower hinge shaft, the lower hinge The rotating end of the page shaft is rotatably arranged on the lower hinge seat through a second bearing, and the connecting end of the lower hinge shaft is located outside the lower hinge seat and connected with the door leaf.

In the above-mentioned single-leaf concrete structure fire protection airtight door, preferably, the second bearing is a spherical roller bearing; the lower hinge further includes a thrust ball bearing, and the thrust ball bearing is located in the Below the second bearing, the upper roller cage of the thrust ball bearing is sleeved on the bottom end of the lower hinge shaft; the joint bearing has a connecting shaft, a centering ball head and a centering support, the connection The shaft is sleeved with the lower roller cage of the thrust ball bearing, the self-aligning ball head and the self-aligning support form a rolling friction pair, and the self-aligning support is arranged in the lower hinge seat.

The beneficial effects brought about by the technical solutions provided by the embodiments of the present invention are:

By installing the base on the door leaf and the handle on the base, one end of the transmission mechanism is connected with the handle, and the other end is connected with the lock assembly installed on the door leaf. The lock assembly can be connected with the door frame to lock or unlock the door leaf. One end of the transmission mechanism is connected to the handle, and the other end can be connected to multiple lock assemblies, so that one handle can control the unlocking or locking of multiple lock assemblies at the same time, improving the locking effect, and improving the firmness and reliability of the lock. . The lock head assembly is equipped with a reset spring, which can automatically reset; a locking copper sleeve and guide keys can improve the movement accuracy; an oil cup can reduce the wear of the locking copper sleeve and the locking head. The length of the connecting rod of the transmission mechanism is adjustable, which can reduce the difficulty of assembly; the number of connecting rods can be flexibly set, and the number of lock head components used can be selected according to actual needs to achieve the purpose of driving multiple lock head components with one handle. The lock assembly and the transmission mechanism can be directly connected or indirectly connected, which can enrich implementation schemes. The high-speed railway and subway tunnels have superior fire-proof and airtight performance.

Description of the drawings

Figure 1 is a schematic diagram of the installation of a locking device provided by an embodiment of the present invention;

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

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

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

Figure 5 is a cross-sectional view of Figure 4 at D-D;

FIG. 6 is a schematic structural diagram of a single-leaf concrete structure fire-resistant closed door for high-speed railway and subway tunnels according to an embodiment of the present invention;

Figure 7 is a cross-sectional view of Figure 6 at E-E;

FIG. 8 is an enlarged schematic diagram of I in FIG. 7;

Figure 9 is a cross-sectional view of Figure 6 at F-F;

Figure 10 is a schematic front view of a door leaf steel frame provided by an embodiment of the present invention;

Fig. 11 is an enlarged schematic diagram of position II in Fig. 10;

12 is a schematic front view of a door leaf reinforcement provided by an embodiment of the present invention;

Figure 13 is a schematic structural diagram of a hinge (upper hinge and lower hinge) provided by an embodiment of the present invention;

Fig. 14 is a schematic diagram of the structure in the G direction in Fig. 13;

Figure 15 is a cross-sectional view of Figure 13 at H-H;

16 is a schematic diagram of the structure of the automatic reset device of the present invention;

Figure 17 is a schematic structural view of the automatic reset device after the torsion spring is cut;

Figure 18 is a top view of Figure 16;

Figure 19 is a schematic diagram of the structure of Figure 18 with the cover removed;

In the picture: 1 lock assembly; 101 lock seat; 102 lock head; 103 return spring; 104 lock gasket; 105 lock copper sleeve; 106 guide key; 2 paddle components; 201 lock paddle; 202 paddle copper sleeve 203 fixed shaft; 204 paddle adjusting washer; 205 fastening nut; 206 nut split pin; 207 paddle retaining ring; 3 transmission mechanism; 301 rotating arm plate; 302 rod body; 303 movable club head; 4 base; 401 First mounting plate; 402 second mounting plate; 403 bushing; 5 door leaves; 50 fireproof coating; 51 door leaf frame; 52 door leaf reinforcement frame, 521 horizontal main ribs, 522 longitudinal main ribs, 523 lashing ribs; 6 handles; 601 One outer handle; 602 second outer handle; 603 inner handle; 604 bearing; 605 bearing retaining ring; 606 retaining ring nut; 607 positioning screw; 71 upper hinge; 711 upper hinge seat; 712 upper hinge shaft; 713 first Bearing; 714 end cover; 715 upper hinge base; 716 first inner plate; 717 positioning tube; 718 annular protrusion; 720 sleeve; 7200 first connecting plate; 7201 second connecting plate; 72 lower hinge; 721 lower hinge Seat; 722 lower hinge shaft; 723 second bearing; 724 dust cover; 725 thrust ball bearing; 7251 upper roller cage; 7252 lower roller cage; 726 joint bearing; 7261 connecting shaft; 7262 self-aligning ball head 7263 self-aligning support; 727 load-bearing support; 728 lower hinge base; 729 adjusting gasket; 8 door frame; 80 angle steel; 801 first wing plate; 802 second wing plate; 82 sealing plate; 83 fixing screws; 84 Fireproof expansion sealing strip; 90 automatic reset device; 901 base plate; 902 first bracket; 903 torsion spring; 904 second bracket; 905 first gasket; 906 second gasket; 907 assembly bolt; 908 mandrel; 909 external end; 911 second external hole; 912 hook bolt; 913 screw; 914 ratchet wheel; 915 adjustment shaft; 916 cover plate; 917 pawl; 918 polygonal column section; 919 cover; 920 carrier plate; 921 mating part; 922 internal connection end 923 extension end; 924 isolation medium installation; 925 compression spring; 926 installation tube; 900 door closer; 930 jack, 931 jack support; 932 jack bottom plate.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. Each example is provided by way of explanation of the present invention instead of limiting the present invention. In fact, it will be clear 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 present invention. For example, features shown or described as part of one embodiment can be used in another embodiment to yield a still further embodiment. Therefore, it is expected that the present invention includes such modifications and variations that fall within the scope of the appended claims and their equivalents.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientation or positional relationship indicated by "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and does not require that the present invention must be constructed and operated in a specific orientation, so it cannot be understood as Restrictions on the present invention. The terms "connected", "connected", and "arranged" used in the present invention should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component; A person of ordinary skill in the art can understand the specific meaning of the above-mentioned terms according to specific circumstances.

As shown in Figures 1-19, the embodiments of the present invention provide a single-leaf concrete structure fire-resistant closed door for high-speed railway and subway tunnels, which includes: a door frame 8, a hinge, a door leaf 5, a fireproof seal, a linkage latch, and Automatic reset device.

The door frame 8 is arranged at the entrance of the tunnel or in the tunnel, such as a high-speed railway or subway tunnel. The vertical part, the lower horizontal part and the right vertical part are connected end to end in sequence to form a ring structure. In practical applications, the upper horizontal part, the left vertical part, and the right vertical part are usually made of angle steel 80. Specifically, the angle steel 80 includes a first wing plate 801 and a second wing plate 802, and the two wing plates are perpendicular to each other to form an angle. The inner surfaces of the first wing plate 801 and the second wing plate 802 are both connected with concrete, and the outer surface of the first wing plate 801 is connected with the side wall of the opening, and a lock box (or lock hole) is provided on it, and the second The outer surface of the wing plate 802 is the front side of the door frame. When a grading section is set between the door sill and the ramp floor, the lower horizontal part can be a steel plate instead of an angle steel. The bottom of the door leaf 5 is suspended in the grading section, and the side of the bottom of the door leaf 5 is against the side of the lower horizontal part. . The fireproof seal is arranged on the bonding surface of the door frame 8 and the door leaf 5 along the circumferential direction of the door frame, which can be the bonding surface of the door frame 8, such as the outer surface of the second wing panel, or the bonding surface of the door leaf 5 superior. The fireproof seal includes: a gasket plate 82 and a fireproof expansion sealing strip 84. The gasket plate 82 is arranged on the front side of the door frame 8, and its two sides in the width direction of the gasket are respectively provided with fireproof expansion sealing strips. For example, it is set by bonding, and then fixed and connected by fixing screws 83. The fixing screws can be For slotted pan-head screws, the width direction of the gasket plate 82 is perpendicular to the length direction of the gasket plate 82, and the length direction is consistent with the direction of the door frame 8. The two side surfaces of the gasket plate 82 are the left side and the right side, respectively. The gasket plate 82 may be a steel plate. The hinge is located on one side of the door frame 8, as shown on the right in Figure 6. The door leaf 5 is a concrete structure door leaf, which is hinged with the door frame 8 through a hinge so that the door leaf 5 rotates around a vertical axis located on one side of the door frame 5. When closing the fire-protected airtight door, the door leaf 5 is attached to the door frame 8, and a fire-proof seal is clamped between the two to realize the sealing of the fire-protected airtight door. The linkage latch includes: a base 4, a handle 6, a transmission mechanism 3 and a lock assembly 1. The base 4 and the lock assembly 1 are installed on the door leaf 5; the handle 6 is installed on the base 4; the transmission mechanism 3 is connected with the handle 6 and the lock assembly 1 respectively. The automatic reset device 90 mainly includes a base, a mandrel 908 and a torsion spring 903; the base can carry the mandrel 908 and the torsion spring 903; the mandrel 908 is installed on the base, can carry the installation of the torsion spring 903, and can define the torsion spring when in use The deformation of 903 prevents the torsion spring 903 from being radially deformed; the torsion spring 903 is sleeved on the outside of the mandrel 908, one end of which is an internal connection end 922, which is connected to the base, and the other end is an external end 909, which is external to the door leaf 5. For example, a mounting pipe 926 is provided on the top surface of the door leaf for mounting the external end. The material of the installation pipe can be copper. When the door leaf 5 is rotated by an external force, the torsion spring 903 is elastically deformed by the torque, and when the external force disappears, the door leaf 5 can be rotated in the opposite direction of being rotated by the external force, so as to achieve the effect of automatic reset of the door leaf.

Specifically, the base 4 is installed on the door leaf 5, the handle 6 is installed on the base 4, one end of the transmission mechanism 3 is connected with the handle 6, and the other end is connected with the lock assembly 1 installed on the door 5, the lock assembly 1 It can be connected with the lock on the door frame to lock or unlock the door leaf 5. One end of the transmission mechanism 3 is connected to the handle 6, and the other end can be connected to multiple lock assemblies 1, so that one handle 6 can control the unlocking or locking of multiple lock assemblies 1 at the same time, which improves the locking effect and improves the locking performance. Robustness and reliability.

Further, 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 installed on the inner and outer sides 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, the first mounting plate 401 and the second mounting plate 402 are both installed inside the door leaf 5. The shaft sleeve 403 is installed in the door leaf 5, one end penetrates the first mounting plate 401, and is fixedly connected to the first mounting plate 401, such as welding connection or interference fit connection, and the other end penetrates the second mounting plate 402, and is connected to the second mounting plate 402. Fixed connection, such as welding connection or interference fit connection. The first mounting plate 401, the second mounting plate 402, and the shaft sleeve 403 are combined into a whole, which can provide installation and rotation space for the rotation movement of the handle 6.

The handle 6 is installed in the base 4, specifically installed in the shaft sleeve 403, and is rotatably connected with the shaft 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 to the inner handle 603, and the inner handle 603 is installed in the sleeve 403 of the base 4 , Rotatable connection with the shaft sleeve 403. In the rotatable connection scheme, it is preferable that the inner handle 603 is rotatably connected with the shaft sleeve 403 through the bearing 604, that is, the inner handle 603 and the shaft sleeve 403 are movably connected by installing the bearing 604, and at the same time, in order to balance the rotation of the handle 6 The two ends of the inner handle 603 are fitted with a bearing 604 respectively, which is connected to the shaft sleeve 403 through two bearings 604.

The handle 6 of the present invention includes a first outer handle 601, a second outer handle 602, and an inner handle 603. The handle 6 is U-shaped as a whole. When installed on the base 4, it is easy to operate from both sides of the door leaf 5. 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 means of clamping and fastening. Specifically, the inner handle 603 is provided with a polygonal end, and the polygonal end is inserted into the first outer handle 601 and is snap-connected to the first outer handle 601 so as to realize synchronous rotation with the first outer handle 601. The first outer handle 601 is provided with a positioning screw 607, and the positioning screw 607 is threadedly connected to the polygonal end, so as to ensure the firmness of the connection between the first outer handle 601 and the inner handle 603 in the axial direction of the inner handle 603. As a preferred solution, the end of the polygon is a regular polygon, which is convenient for processing and manufacturing, and the end of the polygon is provided with a taper along the axis direction to facilitate insertion into the first outer handle 601.

In implementation, in order to reduce the amount of assembly work, the inner handle 603 is connected to the first outer handle 601 through the polygonal end, and the second outer handle 602 and the inner handle 603 are in an integrated structure, so that the second outer handle 602 and the inner handle can be removed. The assembling links between the handles 603 also reduce the total number of parts of the present invention. Specifically, during installation, a bearing retainer ring 605 is installed between the bearing 604 near the second outer handle 602 and the second outer handle 602. One end of the bearing retainer 605 abuts on the second outer handle 602, and the other end abuts on the bearing. 604; between the polygonal end and the bearing 604 is provided with a bearing retainer ring 605 and a retainer nut 606, one end of the bearing retainer 605 abuts on the bearing 604, the other end abuts on the retainer nut 606, the retainer nut 606 and inner The handle 603 is screwed to fix the bearing 604.

Further, the lock head assembly 1 includes a lock seat 101, a lock head 102 and a return spring 103; the lock seat 101 is installed on the door leaf 5, specifically installed inside the door leaf 5, and can provide installation positions for the lock head 102 and the return spring 103; The head 102 is installed in the locking seat 101 and slidingly fits with the locking seat 101 to achieve locking and unlocking; the return spring 103 is installed in the locking seat 101, one end is connected to the locking seat 101, and the other end is connected to the locking head 102 to reset The spring 103 is always in a compressed state in the locking seat 101, so as to provide a reset power for the locking head 102 (resetting here means that the return spring 103 can make the locking head 102 in a locked state under the action of elastic force).

Preferably, a locking washer 104 is provided between the locking seat 101 and the door leaf 5. By adjusting the thickness of the locking washer 104, the installation position of the locking seat 101 on the inner side of the door leaf 5 can be adjusted, that is, the inner surface of the locking seat 101 and the door leaf 5 can be adjusted. In turn, the installation position of the locking head 102 can be adjusted. Further, a locking washer 109 is provided between the locking washer 104 and the door leaf 5, and the thickness of the locking washer 109 is greater than the thickness of the locking washer 104, which can be N times the thickness of the locking washer 104, and N is greater than or equal to 1. Positive numbers of, such as 2, 3, 4, 5, 6, 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 washer 104.

At the same time, in order to facilitate the smooth operation of the lock assembly 1, a lock copper sleeve 105 is provided in the interior of the lock seat 101 where it is slidingly fitted with the lock head 102, and the lock copper sleeve 105 is installed inside the lock seat 101 by means of interference fit. The sliding fit with the locking head 102 can improve the accuracy of the locking head 102 in translation. In order to facilitate the entry and exit of the locking head 102 in the lock box (or called the locking hole), the end of the locking head 102 matching the locking hole is a wedge-shaped end. In order to ensure the translation accuracy of the locking head 102 and prevent the locking head 102 from twisting when the locking head 102 moves in translation, the present invention is provided with a guide key 106 on the locking head 102. The guide key 106 is connected with the locking head 102 by interference fit and is connected with the locking seat 101. The sliding fit can provide sliding guidance for the locking head 102. As a maintenance structure for the lock head assembly 1, an oil cup is provided on the lock seat 101, and oil can be filled between the lock seat 101 and the lock head 102, so that the lock seat 101 (the lock copper sleeve 105 on the lock seat 101) and the lock head Keep the oil lubrication or grease lubrication between 102 at all times, reducing the wear of the locking copper sleeve 105 and the locking head 102.

Further, the transmission mechanism 3 includes a rotating arm plate 301 installed on the handle 6 and a connecting rod connected to the rotating arm plate 301; the rotating arm plate 301 includes a first opening and a second opening, and the handle 6 is inserted through the first opening. The inside of the hole 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 is directly or indirectly connected with the lock assembly 1. When in use, the handle 6 drives the arm plate 301 to rotate, the arm plate 301 drives the connecting rod to move, and then drives the locking head 102 to leave the lock hole; the first outer handle 601 and/or the second outer handle 602 are not directly stressed At this time, the return spring 103 drives the locking head 102 to return, and then drives the handle 6 to return through the connecting rod.

In order to facilitate assembly, the connecting rod includes a rod body 302, a movable rod head 303 and a rod head nut; the rod body 302 is threadedly connected with the movable rod head 303, and the length of the connecting rod can be fine-tuned by adjusting the length of the threaded connection between the rod body 302 and the movable rod head 303 Therefore, assembly problems caused by assembly errors and/or manufacturing errors can be eliminated, and assembly difficulty can be reduced. At the same time, in order to keep the length of the connecting rod unchanged after assembly, the present invention uses a double nut fastening method to lock the length of the connecting rod, that is, the rod head nut is installed on the rod body 302 and connected with the movable rod head 303, The head nut abuts against the movable head 303, thereby forming a double-nut fastening structure together with the movable head 303. In implementation, one connecting rod can be provided with one movable head 303 or two movable heads 303. Preferably, a connecting rod is provided with a movable rod head 303, one end of the rod body 302 is threadedly connected with the movable rod head 303, and the other end of the rod body 302 is provided with a fixed rod head, which can reduce the assembly workload. The movable head 303 or the fixed head is hinged with the second opening.

In the embodiment, there may be one or more connecting rods. When there is one connecting rod, one handle 6 corresponds to one connecting rod and one lock assembly 1 at the same time. That is, one handle 6 drives one lock assembly 1 to lock the door leaf 5 on one side of the door leaf 5. When there are multiple connecting rods, one handle 6 corresponds to multiple connecting rods and multiple lock head assemblies 1, and the number of connecting rods and lock head assemblies 1 is equal, one-to-one correspondence, at this time, one handle 6 drives multiple lock heads Component 1 action, can lock the door leaf 5 on one side of the door leaf 5, can also lock the door leaf 5 on the two sides of the door leaf 5, and can also lock the door leaf 5 on the three sides or four sides of the door leaf 5. Lock the door leaf 5 at the same time.

Preferably, the number of connecting rods is an even number not less than 2; half of the connecting rods are located above the handle 6, and the other half of the connecting rods are located below the handle 6; the connecting rod located above the handle 6 is related to the connecting rod located below the handle 6. The first openings are centrally symmetrically distributed, which can balance the force of the door leaf 5 when it is locked.

Further, the lock assembly 1 and the transmission mechanism 3 may be directly connected or indirectly connected. When directly connected, the handle 6 drives the transmission mechanism 3 to move, so that the transmission mechanism 3 drives the locking head 102 to move; when in indirect connection, the handle 6 drives the transmission mechanism 3 to move, so that the transmission mechanism 3 drives the locking head 102 to move through the medium.

As an embodiment in which the lock assembly 1 and the transmission mechanism 3 are directly connected, the lock assembly 1 and the transmission mechanism 3 are hingedly connected. In the embodiment, the swivel arm plate 301 is installed on the second outer handle 602, is snap-fitted with the second outer handle 602, and rotates synchronously along the axis direction of the inner handle 603 as the handle 6 rotates. One end of the connecting rod is hinged with the arm plate 301, and the other end is hinged with the locking head 102. When in use, the handle 6 drives the rotating arm plate 301 to rotate, and the rotating arm plate 301 drives the connecting rod to move, thereby driving the locking head 102 to move to the position where the connecting rod is located.

As an embodiment in which the lock assembly 1 and the transmission mechanism 3 are indirectly connected, the lock assembly 1 and the transmission mechanism 3 are indirectly connected through a paddle assembly 2. The paddle assembly 2 includes a fixed shaft 203, a lock paddle 201, a paddle retaining ring 207, a fastening nut 205 and a nut split pin 206; the fixed shaft 203 is installed on the door leaf 5 and can provide an installation position; the lock paddle 201 It is rotatably connected with the fixed shaft 203, and one end is hinged with the transmission mechanism 3, and the other end is sleeved on the locking head 102 of the lock assembly 1, and the locking head 102 can be moved to make the locking head 102 move in parallel; The ring 207 is installed on the fixed shaft 203 and connected with the lock paddle 201, which can limit the lock paddle 201 in the axial direction of the fixed shaft 203; the fastening nut 205 is installed on the fixed shaft 203 and is connected to the fixed shaft 203 is threaded and connected with the paddle retaining ring 207 to limit the position of the paddle retaining ring 207; the nut split pin 206 is installed on the fastening nut 205 to lock the fastening nut 205.

Preferably, a limit device is also provided on the lock paddle 201, which can resist the lock assembly 1 during operation, so as to prevent the return spring 103 from being over-compressed and reducing the fatigue life. The limit device includes a limit bolt and a limit nut. The limit bolt is threadedly connected with the lock paddle 201, and the limit nut is threadedly connected with the limit bolt to lock the limit bolt. During installation, by adjusting the extension length of the stop bolt on the lock paddle 201, the longest translational distance of the lock head 102 during operation can be adjusted, so that the maximum compression amount of the return spring 103 during use can be adjusted.

At the same time, in order to improve the movement precision of the lock paddle 201 and reduce wear, a paddle copper sleeve 202 is provided in the lock paddle 201 at the rotatable connection with the fixed shaft 203. In order to facilitate the adjustment of the length of the lock paddle 201 from the inner surface of the door leaf 5, in the present invention, paddle adjustment pads 204 are provided on both sides of the lock paddle 201, and the paddle adjustment pads 204 are installed on the fixed shaft 203 , The position of the lock paddle 201 can be adjusted, so that the lock paddle 201, the lock pad 102, and the transmission mechanism 3 can move in a plane, and the operation is smooth and labor-saving.

It is worth noting that in the hinge connection of the present invention, the movable rod head 303 and the arm plate 301, the lock head paddle 201 and the fixed rod head, and the lock head 102 and the fixed rod head are all connected in series by a pin when they are hinged. Then the cotter pin is clamped on the pin shaft to realize the hinged connection.

The door leaf 5 includes: a door leaf frame 51, a door leaf reinforcement frame 52 and concrete. The door leaf frame 51 has a ring shape, such as a rectangle, which can be formed by connecting two longitudinal channel steels and two transverse channel steels, and the groove bottom of each channel steel is the inner side of the door leaf frame 51. The door leaf reinforcement frame 52 is connected to the inner side of the door leaf frame 51 and is located in the space formed by the door leaf frame 51. Concrete is poured in the space formed by the door leaf frame 51 and the door leaf reinforcement frame 52. The door leaf reinforcement frame 52 includes a horizontal main rib 521, a longitudinal main rib 522, and a binding rib 523. A plurality of horizontal main ribs 521 and a plurality of longitudinal main ribs 522 are cross-connected in a grid shape. In the width direction of the door leaf 5, a plurality of grid-like structures may be provided. Along the width direction of the door leaf 5, two opposite intersections formed by the longitudinal main ribs 522 and the transverse main ribs 521 are connected by binding ribs 523. In order to enhance the connection strength of the door leaf reinforcement frame 522, both ends of the lashing ribs 523 are semicircular hooks, and one end of the horizontal main rib 521 and the longitudinal main rib 522 are both bar ends with straight hooks. Before pouring concrete, the outer side of the door leaf 5 can be used as a bottom mold, and then steel bars are welded or tied to form the door leaf reinforcement frame 52. After the door leaf 5 is formed, the exposed metal surface (the surface of the door leaf frame and the surface of the door leaf reinforcement frame) should be coated with two layers of anti-rust paint, such as Hongdan anti-rust paint. Apply fire-resistant coatings, which can be non-expandable fire-resistant coatings for concrete components. It should be noted that, for ease of production, the following hinge shaft is welded to the door leaf frame 51 before concrete pouring.

In order to stably rotate and support the door leaf 5, the number of hinges is two, and the two hinges are respectively an upper hinge 71 and a lower hinge 72 in the vertical direction. The upper hinge 71 includes an upper hinge seat 711 and an upper hinge shaft 712. The upper hinge seat 711 is arranged on one side of the door frame 8 and is formed with a cavity with open ends. The two openings are an upper opening and a lower opening. The end cover 714 covers the upper opening and can be installed on the upper opening by bolts and gaskets. Opening. The rotating end of the upper hinge shaft 712 is rotatably disposed in the cavity of the upper hinge seat 711 through the first bearing 713, and the free end of the upper hinge shaft 712 is connected with the door leaf 5, so that the upper hinge shaft 712 drives the door leaf when it rotates 5 Rotate. In order to stably fix the first bearing 713, the upper hinge 71 further includes a positioning tube 717. An annular protrusion 718 is provided on the inner wall of the cavity of the upper hinge seat 711, which abuts against the lower end surface of the outer bearing ring of the first bearing 713, and the lower end surface of the positioning tube 717 is opposite to the upper end surface of the outer bearing ring of the first bearing 713. Conflict, the upper end surface of the positioning tube 717 and the lower bottom surface of the end cap 714 abut against each other. The first bearing 713 may be a spherical roller bearing.

The lower hinge 72 includes a lower hinge seat 721 and a lower hinge shaft 722. The lower hinge seat 721 and the upper hinge seat 711 are arranged on the same side of the door frame 8 and are formed with a cavity with an upper opening at the upper end. The rotating end of the lower hinge shaft 722 is rotatably arranged in the cavity of the lower hinge seat 721 through the second bearing 723, and the free end of the lower hinge shaft 722 is connected with the door leaf 5, so that the lower hinge shaft 722 drives the door leaf when it rotates. 5 Rotate. In order to prevent dust from entering the cavity, the upper opening is covered with a dust cover 724, and the dust cover 724 is sleeved outside the lower hinge shaft 722 through a through hole opened on the dust cover 724.

The lower hinge 72 also includes a thrust ball bearing 725 and an articulated bearing 726. The thrust ball bearing 725 is used for centering and support, and is located below the second bearing 723, and the upper roller cage 7251 of the thrust ball bearing 725 is sleeved on the bottom end of the lower hinge shaft 722. The joint bearing 726 is located below the thrust ball bearing 725 and is used for centering and support. The joint bearing 726 includes a connecting shaft 7261, a centering ball 7262, and a centering support 7263. The connecting shaft 7261 is stepped, the upper end of the connecting shaft 7261 is sleeved with the lower roller cage 7252 of the thrust ball bearing 725, and the step surface of the connecting shaft 7261 abuts against the lower end surface of the lower roller cage 7252. The self-aligning ball head 7262 is arranged on the bottom surface of the connecting shaft 7261 and forms a rolling friction pair with the self-aligning support 7263, thereby ensuring that the center lines of the upper and lower hinge shafts are on the same straight line when in use, and are aligned with the center of the door leaf The line is parallel and also parallel to the center line of the door frame. In order to further provide stable support, the lower hinge 72 further includes a load bearing support 727 which is disposed under the lower hinge base 721 and abuts against the bottom end of the lower hinge base 721.

In order to further improve the consistency of the rotation of the upper and lower hinges, the hinges further include a shaft sleeve 720. The upper end of the shaft sleeve 720 is sleeved on the free end of the upper hinge shaft 712, the lower end of the shaft sleeve 720 is sleeved on the free end of the lower hinge shaft 722, and the shaft sleeve 720 is connected with the door leaf 5. The shaft sleeve 720 is bolted to the door leaf 5 through the first connecting plate 7200, and welded to the door leaf 5 through the second connecting plate 7201. The first connecting plate 7200 is close to the middle of the sleeve 730 relative to the second connecting plate 7201. During installation, the shaft sleeve 730 is initially fixedly connected with the door leaf 5 by bolts, and then connected by welding, so as to maintain the installation accuracy when connecting with the door leaf 5.

The upper hinge 71 also includes: a first inner plate 716 and an upper hinge base 715. The front surface of the first inner panel 716 is sequentially connected to the rear surface of the door frame 8, that is, the inner surface of the angle steel 80, and the rear surface of the upper hinge base 715 along the horizontal direction. The front surface of the upper hinge base 715 is connected with the upper hinge base 711, and the thickness of the upper hinge base 715 is equal to the thickness of the angle steel forming the door frame 8, and the upper hinge base 715 is flush with the door frame 8 at this time. The lower hinge 72 includes a second inner panel and a lower hinge base 728. The front surface of the second inner panel is sequentially connected to the rear surface of the door frame 8 (that is, the inner surface of the angle steel) and the rear surface of the lower hinge base 728 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. At this time, the lower hinge base 728 is flush with the door frame 8, so that the upper hinge 71 and the lower hinge can be improved. The connection strength between the hinge 72 and the concrete around the door frame 8 stably supports the door leaf body. The above-mentioned connection method may be a bolt connection.

The right ends of the upper hinge base 715 and the lower hinge base 728 are suspended relative 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 application, the upper hinge base 715 and the lower hinge base 728 are in contact with the concrete wall, which improves the stability of the connection. Between the upper hinge base 715 and the upper hinge 711 seat, and between the lower hinge base 728 and the lower hinge seat 721, there can also be adjusted spacers 729 to adjust the center line of the upper and lower hinge shafts and the door body. The center line is in the same plane.

Since the door leaf is of a concrete structure, when the door leaf is opened for a long time, in order to further stably support the door leaf, the fire protection airtight door further includes a jack 930 and a jack support 931. The jack 930 is arranged on the door leaf 5 through the jack bottom plate 932, and the extension end of the jack faces downward. The jack support is arranged under the jack when the door leaf is in an open state. When the door leaf 5 is kept open, the jack 930 moves, and its extended end extends downward into the jack support 931 to provide support for the door leaf 5.

In the present invention, the base of the automatic reset device includes: a base plate 901, a first bracket 902, and a second bracket 904. The first bracket 902 and the second bracket 904 are installed on the base plate 901. The base plate 901, the first bracket 902, and the second bracket 904 may be an integrated structure, or may be connected as a whole by a process such as full welding. The first bracket 902 and the second bracket 904 are arranged in parallel; the first bracket 902 is provided with a first mounting hole, the second bracket 904 is provided with a second mounting hole, the first mounting hole can be connected to the inner terminal 922, and the second mounting hole The hole can install the mandrel 908. The inner end 922 of the torsion spring 903 is connected to the first mounting hole, and the outer end 909 is connected to the door leaf 5, which can accumulate reset power when the door leaf 5 is rotated.

Further, in the present invention, the base plate 901 is provided with a first external hole and a second external hole 911. The first external hole is provided with a hook bolt 912 and a bolt washer. The hook bolt 912 is connected to the mounting carrier and can fix the base on the mounting carrier. The bolt washer is located between the hook bolt 912 and the base plate 901. The bolt washer is located between the hook bolt 912 and the base plate 901. It is a spring washer, which can prevent the hook bolt 912 from loosening. The second external hole 911 is externally connected to the insulating medium mounting member 924, so that the installation accuracy of the automatic reset device can be improved, and the service life of the present invention can be prolonged.

Further, in the present invention, the mandrel 908 includes a mandrel 908 main body, a free end and an assembly end; the main body of the mandrel 908 can carry the torsion spring 903, and the free end and the assembly end are respectively located on both sides of the main body of the mandrel 908. The assembly end Installed in the second mounting hole and fixedly connected with the second mounting hole.

Preferably, the assembly end is provided with an internal thread, which is connected to the assembly bolt 907, that is, the mandrel 908 is installed on the second bracket 904 by bolt fastening, and is fixedly connected to the second bracket 904. A first washer 905 and a second washer 906 are arranged between the assembly bolt 907 and the second bracket 904. The first washer 905 is connected to the second bracket 904. The inner diameter of the first washer is smaller than the diameter of the second mounting hole, and the outer diameter is larger than the The diameter of the second mounting hole can ensure that the assembly bolt 907 fixes the mandrel 908 on the second bracket 904. The second washer 906 is connected to the first washer 905 and the assembly bolt 907 respectively. The second washer 906 is a spring washer and can be a mandrel. The installation of 908 provides pre-tightening force to prevent the mandrel 908 from loosening after installation.

Further, in the present invention, it also includes an adjustment mechanism, which is installed on the first bracket 902 and connected to the inner connecting end 922, and can adjust the initial torque of the torsion spring 903, so that the door leaf 5 can be reset after the automatic reset device is applied. It can be rotated effortlessly and automatically reset.

Preferably, the adjustment mechanism includes an adjustment shaft 915, a ratchet 914, an adjustment cover, a pawl 917, and a compression spring 925; the adjustment shaft 915 is installed in the first mounting hole, is rotatably connected to the first mounting hole, and is connected to the inner end 922 is connected; the ratchet 914 is installed on the adjustment shaft 915; the adjustment cover is installed on the first bracket 902, located outside the ratchet 914; the pawl 917 is installed between the adjustment cover and the ratchet 914, following the return direction of the torsion spring 903, The pawl 917 is located behind the ratchet wheel 914; the compression spring 925 is installed between the ratchet wheel 914 and the pawl 917. When the initial torque is adjusted, twisting the adjustment shaft can realize the initial torque adjustment of the compression spring 925. In use, since the pawl 917 is located behind the ratchet wheel 914 in the installation direction, based on the unidirectional rotation characteristics of the ratchet wheel 914, the initial torque will only increase but not decrease, which can compensate for the torsion spring 903 to a certain extent. Attenuation of elastic force.

Further, in the present invention, the adjustment shaft 915 includes a bearing end, a matching portion 921 and an extension end 923. The bearing end includes a polygonal column section 918 and a bearing plate 920. The polygonal column section 918 is preferably a regular polygon. The ratchet wheel 914 is sleeved on the polygonal column section 918 and resists the bearing plate 920 and can rotate synchronously with the adjustment shaft 915. The mating portion 921 is connected with the bearing end, is installed in the first mounting hole, and is rotatably connected with the first mounting hole, preferably a clearance fit of H8/f7. The protruding end 923 is connected to the mating portion 921 and is located in the core shaft 908 without contacting the core shaft 908, so that the volume of the automatic reset device can be reduced.

Further, in the present invention, the adjusting cover includes a cover plate 916 and a cover body 919; the cover body 919 is cylindrical, with a plurality of threaded holes evenly distributed on the top surface, the cover body 919 is installed above the first bracket 902, and The first bracket 902 is fixedly connected, for example, welded. The cover plate 916 is installed on the cover body 919. The cover plate 916 is provided with light holes and a plurality of through holes corresponding to the threaded holes one by one. The cover plate 916 and the cover body 919 are realized by a plurality of screws 913. Fasten. When in use, the cover plate 916 can press the ratchet wheel 914 to lock the ratchet wheel 914; the light hole can provide a protruding position for the polygonal column section 918, so as to facilitate the operation during torque adjustment.

Preferably, the pawl 917 is cylindrical, and the height of the pawl 917 is smaller than the thickness of the ratchet wheel 914, which can reduce the resistance during torque adjustment and avoid the uncertainty caused by the cover plate 916 pressing the pawl 917.

The weight of the door leaf of the concrete structure is relatively large. In order to easily reset the door leaf automatically, the fire protection airtight door further includes: the airtight device 900. One end of the door closer 900 is installed on the upper horizontal part of the door frame 8, and the other end is connected to the top surface of the door leaf. One end of the door closer is far away from the rotation axis of the door leaf relative to the automatic reset device.

The following describes the installation and adjustment process of the automatic reset device:

The first step is to assemble the automatic reset device completely;

The second step is to install the base on the mounting carrier and insulating medium mounting member 924, and install the external end 909 on the door leaf 5, ensuring that the connection point between the external end 909 and the door leaf 5 and the axis line of the torsion spring 903 are parallel to the door leaf 5's plane of rotation;

The third step is to place the door leaf 5 in the reset position, loosen the screw 913 between the cover 916 and the cover 919, twist the polygonal column section 918 of the adjustment shaft 915, adjust the initial torque of the torsion spring 903, and fix it after the adjustment is completed. With screw 913, the installation and debugging of the automatic reset device can be completed.

It can be known from technical common sense that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above-disclosed embodiments are only illustrative in all aspects, and not the only ones. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

A single-leaf concrete structure fire-resistant closed door for high-speed railways and subway tunnels, characterized in that the single-leaf concrete fire-resistant closed door includes: a door frame, a hinge, a door leaf, a fireproof seal, a linkage latch and an automatic reset device;

The door frame is arranged in the tunnel;

The hinge is located on one side of the door frame;

The door leaf is a concrete structure door leaf, and the door leaf and the door frame are hingedly connected by the hinge so that the door leaf is rotated relative to the door frame;

The fireproof seal is arranged on the bonding surface of the door frame and the door leaf;

The linkage latch includes a base, a handle, a transmission mechanism, and a lock assembly. The base and the lock assembly are installed on the door leaf, the handle is installed on the base, and the transmission The mechanism is respectively connected with the handle and the lock assembly;

The automatic reset device includes a base, a mandrel, and a torsion spring, the base is arranged above the hinge, and is used to carry the mandrel and the torsion spring, and the mandrel is installed on the base, The torsion spring is sleeved on the outer side of the mandrel, one end of the torsion spring is an inner end connected to the base, and the other end of the torsion spring is an outer end connected to the top surface of the door leaf.
The single-leaf concrete structure fireproof and protective airtight door according to claim 1, characterized in that:

The lock head assembly includes a lock seat, a lock head and a return spring;

The locking seat is installed on the door leaf; the locking head is installed in the locking seat and is in sliding fit with the locking seat; the return spring is installed in the locking seat, and one end is connected to the locking seat , The other end is connected with the locking head;

Preferably, a locking gasket is provided between the locking seat and the door leaf, and the locking gasket is used to adjust the installation position of the locking seat;

Inside the locking seat, a locking copper sleeve is provided at the sliding fitting position of the locking head;

One end of the locking head is a wedge-shaped end, and the wedge-shaped end is used to be inserted into a lock hole provided on the door frame;

A guide key is provided on the locking head, and the guide key is slidingly matched with the locking seat to provide a sliding guide for the locking head.
The single-leaf concrete structure fireproof and protective airtight door according to claim 1, characterized in that:

The transmission mechanism includes a rotating arm plate installed on the handle and a connecting rod connected with the rotating arm plate;

The arm plate includes a first opening and a second opening, the handle is inserted into the first opening, one end of the connecting rod is rotatably connected to the second opening, and the other end is connected to the second opening. The lock assembly is directly or indirectly connected; there are one or more connecting rods, and they correspond to the lock assembly one-to-one;

Preferably, the number of the connecting rods is an even number not less than 2; half of the connecting rods are located above the handle, and the other half of the connecting rods are located below the handle; the connecting rods located above the handle The connecting rod and the connecting rod located below the handle are distributed symmetrically about the center of the first opening.
The single-leaf concrete structure fireproof and protective airtight door according to claim 3, characterized in that:

The connecting rod includes a rod body, a movable rod head and a rod head nut;

The rod body is threadedly connected with the movable rod head; the rod head nut is installed on the rod body and connected with the movable rod head;

One end of the rod body is threadedly connected with the movable rod head, and the other end of the rod body is provided with a fixed rod head;

The movable club head or the fixed club head is hinged with the second opening;

The lock head assembly is hinged with the transmission mechanism.
The single-leaf concrete structure fireproof and protective airtight door according to any one of claims 1 to 4, characterized in that it further comprises:

A paddle assembly, the transmission mechanism is connected to the lock assembly through the paddle assembly;

The paddle assembly includes a fixed shaft, a lock paddle, a paddle retaining ring, a fastening nut, and a nut split pin;

The fixed shaft is installed on the door leaf to provide an installation position; the lock paddle is rotatably connected with the fixed shaft, and one end is hinged with the transmission mechanism, and the other end is sleeved on the lock The head assembly; the paddle retaining ring is installed on the fixed shaft and connected with the lock paddle, and the fastening nut is installed on the fixed shaft and connected with the paddle retaining ring ; The nut split pin is installed on the fastening nut;

Preferably, a limit device is further provided on the lock paddle, which is used to abut the lock assembly during movement, and the limit device includes a limit bolt and a limit nut. The lock paddle is threadedly connected, and the limit nut is threadedly connected to the limit bolt;

In the lock paddle, a paddle copper sleeve is provided at the rotatable connection with the fixed shaft;

A paddle adjusting washer is arranged on both sides of the lock head paddle, and the paddle adjusting pad is installed on the fixed shaft.
The single-leaf concrete structure fireproof and protective airtight door according to claim 1, characterized in that:

The base includes a base plate, a first bracket and a second bracket;

The first bracket and the second bracket are installed on the base plate, and the first bracket and the second bracket are arranged in parallel; the first bracket is provided with a first mounting hole, and the second bracket The bracket is provided with a second mounting hole, the first mounting hole is used to install the inner connection end, and the second mounting hole is used to install the mandrel;

The base plate is provided with a first external hole and a second external hole;

The first external hole is provided with a hook bolt and a bolt washer, the bolt washer is a spring washer, and the hook bolt is used to externally mount the carrier; the second external hole is used to externally connect the insulating medium mounting member;

Preferably, the mandrel includes a mandrel body, a free end and an assembly end;

The mandrel main body is used to carry the torsion spring, the free end and the assembly end are respectively located on two sides of the mandrel main body, and the assembly end is installed in the second installation hole.
The single-leaf concrete structure fireproof and protective airtight door according to claim 6, characterized in that:

The assembly end is provided with an internal thread, which is connected with an assembly bolt; a first washer and a second washer are provided between the assembly bolt and the second bracket, and the first washer is connected to the second The bracket is connected, the second washer is respectively connected with the first washer and the assembly bolt, and the second washer is a spring washer;

Preferably, it further includes: an adjustment mechanism installed on the first bracket and connected to the inner connecting end for adjusting the initial torque of the torsion spring;

Preferably, the adjustment mechanism includes an adjustment shaft, a ratchet, an adjustment cover, a pawl and a compression spring;

The adjustment shaft is installed in the first installation hole, is rotatably connected to the first installation hole, and is connected to the inner connecting end; the ratchet is installed on the adjustment shaft; the adjustment cover It is installed on the first bracket and located outside the ratchet; the pawl is installed between the adjusting cover and the ratchet; the compression spring is installed between the ratchet and the ratchet.
The single-leaf concrete structure fire protection sealed door according to claim 7, wherein the adjustment shaft includes a bearing end, a matching part and an extension end;

The bearing end includes a polygonal column section and a bearing plate. The ratchet is sleeved on the polygonal column section and abuts against the bearing plate; the mating part is connected to the bearing end and is mounted on the first Inside the mounting hole, it is rotatably connected with the first mounting hole; the protruding end is connected with the matching portion and is located in the mandrel;

Preferably, the adjustment cover includes a cover plate and a cover body;

The cover body is cylindrical and is installed above the first bracket; the cover plate is installed on the cover body, the cover plate is provided with a light hole, and the cover plate is used for pressing the Said ratchet, said light hole is used to provide a protruding position for said polygonal column section.
The single-leaf concrete structure fireproof and protective airtight door according to claim 1, characterized in that:

The number of the hinges is two, and the two hinges in the vertical direction are respectively: an upper hinge and a lower hinge;

The upper hinge includes:

The upper hinge seat is arranged on one side of the door frame;

The upper hinge shaft, the rotating end of the upper hinge shaft is rotatably arranged on the upper hinge seat through a first bearing, and the connecting end of the upper hinge shaft is located outside the upper hinge seat and is connected to the door leaf connect;

The lower hinge includes:

The lower hinge seat is located below the upper hinge seat;

A lower hinge shaft, the rotating end of the lower hinge shaft is rotatably arranged on the lower hinge seat through a second bearing, and the connecting end of the lower hinge shaft is located outside the lower hinge seat and is connected to the door leaf connect.
The single-leaf concrete structure fireproof and protective airtight door according to claim 9, characterized in that:

The second bearing is a spherical roller bearing;

The lower hinge also includes:

A thrust ball bearing, the thrust ball bearing is located below the second bearing, and the upper roller cage of the thrust ball bearing is sleeved on the bottom end of the lower hinge shaft;

The joint bearing has a connecting shaft, a centering ball head and a centering support, the connecting shaft is sleeved with the lower roller cage of the thrust ball bearing, and the centering ball head is formed with the centering support For the rolling friction pair, the centering support is arranged in the lower hinge seat.