JP2022532956A - Single door concrete structure for high speed rail and subway tunnels Fire protection sealed door - Google Patents

Abstract

A door frame (8) provided in the tunnel, a hinge located on one side of the door frame, a door plate (5) of concrete structure and hingedly connected to the door frame via the hinge, the door frame and the door. A fireproof packing provided on the bonding surface with a plate, and an interlocking automatic lock, comprising a base (4), a lock head assembly (1), a handle (6) and a transmission mechanism (3). , the base and lock head assembly are mounted on the door plate, the handle is mounted on the base, and the transmission mechanism is an interlocking automatic lock and an automatic return device (90) respectively connected to the handle and lock head assembly. A pedestal provided above the hinge; a core shaft (908) attached to the pedestal; a torsion spring (903) whose end is a circumscribing end (909) and is connected to the top surface of the door plate; and an auto-return device. is the door. The solution realizes that one handle can control unlocking or locking of multiple lock head assemblies at the same time, which improves the locking effect and enhances robustness and reliability when locking. [Selection drawing] Fig. 1

Description

The present invention belongs to the technical field of protection process, and particularly relates to a single door concrete structure fire protection sealed door of a high-speed railway and a subway tunnel.

By installing a fire door in the passage, when an accident occurs in the passage, for example, an explosion or a fire, the accident affects only the passage on one side of the fire door, while it destroys the passage on the other side of the fire door. It can have little effect.

Effectively closing the fire door when an accident occurs is an important measure to avoid the expansion of the destructive effect due to the accident, and in the prior art, generally, one handle is one. The lock head was controlled to unlock or lock, that is, the door plate and the door frame were brought into contact with each other via one lock head, thereby achieving the effect of door locking. , Was not ideal.

In order to solve the above problems, the present invention includes a door frame, a hinge, a door plate, a fireproof packing, an interlocking automatic lock (interlocking spring lock), and an automatic return device. Provided in the tunnel, the hinge is located on one side of the door frame, the door plate is a concrete structure door plate, and the door plate is rotated with respect to the door frame. The fireproof packing is hinged to the door frame via the door frame, the fireproof packing is provided on the bonding surface between the door frame and the door plate, and the interlocking automatic lock is a base, a handle, a transmission mechanism, and a lock. The base and the lockhead assembly include a head assembly, the base and the lockhead assembly are attached to the door plate, the handle is attached to the base, and the transmission mechanism is attached to the handle and the lockhead assembly, respectively. Connected, the automatic return device includes a pedestal, a core shaft, and a torsion spring, and the pedestal is provided above the hinge to support the core shaft and the torsion spring, and the core shaft is provided. Is attached to the pedestal, the torsion spring is mounted on the outside of the core shaft, one end of the torsion spring is an inscribed end and is connected to the pedestal, and the other end of the torsion spring is Provided is a single door concrete structure fire protection sealed door for high speed rail and subway tunnels which is an outer tangent and is connected to the top surface of the door plate.

In the single door concrete construction fire protection sealed door described above, preferably the lock head assembly includes a lock base, a lock head, and a return spring, wherein the lock base is the door. Mounted on a plate, the lockhead is mounted in the lockbase and slide-assembled with the lockbase, the return spring is mounted in the lockbase, one end is connected to the lockbase and the other end. Is connected to the lock head.

In the single door concrete structure fire protection sealed door described as described above, preferably, a lock gasket for adjusting the mounting position of the lock base is provided between the lock base and the door plate, and the lock is provided. Inside the base, a lock copper sleeve is provided at a position where it slides with the lock head, and one end of the lock head is a wedge-shaped end to be inserted into a lock hole provided in the door frame, and the lock head has a wedge-shaped end. , The lock head is provided with a guide key that provides a slide guide by assembling the slide with the lock base.

In the single door concrete structure fire protection sealed door described above, preferably, the transmission mechanism comprises a rotary arm plate attached to the handle, a connecting rod connected to the rotary arm plate, and the like. The rotary arm plate includes a first hole and a second hole, the handle is inserted into the first hole, and one end of the connection rod is the second hole. The other end is rotatably connected to the lockhead assembly and the other end is directly or indirectly connected to the lockhead assembly, with one or more connecting rods having a one-to-one correspondence with the lockhead assembly, preferably. The number of the connecting rods is an even number of two or more, 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 rod located above the handle and the connecting rod located below the handle are symmetrically distributed about the first opening.

In the single door concrete structure fire protection sealed door described above, preferably, the connecting rod includes a rod body, a movable rod head, and a rod head nut, and the rod body is the rod body. Screw-connected to the movable rod head, the rod head nut is attached to the rod body and connected to the movable rod head, and one end of the rod body is screw-connected to the movable rod head of the rod body. A fixed rod head is provided at the other end, the movable rod head or the fixed rod head is hinged to the second opening, and the lockhead assembly is hinged to the transmission mechanism.

In the single-door concrete construction fire protection sealed door described above, preferably further comprising a pick assembly, the transmission mechanism being connected to the lockhead assembly via the pick assembly, the pick assembly , A fixed shaft, a lockhead pick, a pick resnap ring, a fastening nut, and a nut cotter, the fixed shaft being attached to the door plate to provide a mounting position, the lockhead pick being said. It is rotatably connected to a fixed shaft and one end is hinged to the transmission mechanism, the other end is mounted on the lockhead assembly, and the pick resnap ring is attached to the fixed shaft and the lockhead. Connected to the pick, the fastening nut is attached to the fixed shaft and is connected to the pick resnap ring, and the nut cotter is attached to the fastening nut.

In the single-door concrete-structured fire protection sealed door described above, preferably the lockhead pick is further provided with a position limiting device that abuts the lockhead assembly during operation. Includes a position limiting bolt and a position limiting nut, the position limiting bolt is screwed to the lockhead pick, the position limiting nut is screwed to the position limiting bolt, and within the lockhead pick. A pick copper sleeve is provided at a position rotatably connected to the fixed shaft, pick adjusting gaskets are provided on both sides of the lock head pick, and the pick adjusting gasket is attached to the fixed shaft.

In the single door concrete structure fire protection sealed door described as described above, preferably, the pedestal includes a pedestal plate, a first bracket, and a second bracket, and the first bracket, the first bracket. The two brackets are attached to the pedestal plate, the first bracket is provided in parallel with the second bracket, the first bracket is provided with a first mounting hole for attaching the inscribed end, and the second bracket is provided. Is provided with a second mounting hole for mounting the core shaft, a first circumscribed hole and a second circumscribed hole are provided in the pedestal plate, and a hook bolt and a bolt washer are provided in the first circumscribed hole. Is a spring washer, the hook bolt circumscribes the mounting support, and the second circumscribed hole circumscribes the isolation medium fixture.

In the single door concrete structure fire protection sealed door described as described above, preferably, the core shaft includes a core shaft main body, a free end, and an assembled end, and the core shaft main body is the above-mentioned core shaft main body. Used to support a torsion spring, the free end and the assembled end are located on both sides of the core shaft body, respectively, and the assembled end is mounted in the second mounting hole.

In the single-door concrete structure fire protection sealed door described as described above, preferably, an internal screw screwing with the assembly bolt is provided at the assembly end, and the assembly bolt and the second bracket are provided. A first washer and a second washer are provided between them, the first washer is in contact with the second bracket, the second washer is in contact with each of the first washer and the assembly bolt, and the second washer is in contact with each of the first washer and the assembly bolt. , A spring washer.

The single door concrete structure fire protection sealed door described above preferably further comprises an adjustment mechanism, which is attached to the first bracket and in contact with the inscribed end, said. Adjust the initial torque of the torsion spring.

In the single door concrete construction fire protection sealed door described above, the adjustment mechanism preferably comprises an adjustment shaft, a ratchet, an adjustment cover, a claw, a compression spring, and said adjustment. The shaft is mounted in the first mounting hole, rotatably connected to the first mounting hole and in contact with the inward end, the ratchet is mounted on the adjusting shaft, and the adjusting cover is Attached to the first bracket and located outside the ratchet, the claw is attached between the adjustment cover and the ratchet, and the compression spring is attached between the ratchet and the claw.

In the single door concrete structure fire protection sealed door described above, the adjusting shaft preferably includes a ratchet, a linking portion, and an overhanging end, which is polygonal. The ratchet includes a log and a receiving tray, the ratchet is mounted on the polygonal log and abuts on the receiving tray, and the linking portion is in contact with the receiving end and is mounted in the first mounting hole. It is rotatably connected to the first mounting hole, and the overhanging end is in contact with the linking portion and is located in the core shaft.

In the single door concrete structure fire protection sealed door described as described above, preferably, the adjustment cover includes a cap plate and a cover body, and the cover body is cylindrical and the first is said. 1 Attached above the bracket, the cap plate is attached to the cover body, the cap plate is provided with a light hole, the cap plate presses the ratchet, and the light hole is the polygonal log. Provides an overhang position for.

In the single door concrete structure fire protection sealed door described above, preferably the number of the hinges is two, the two hinges along the vertical direction, respectively, the upper hinge and the hinge. It is a lower hinge, and the upper hinge is an upper hinge seat provided on one side of the door frame and an upper hinge shaft, and the rotating end of the upper hinge shaft is the upper hinge seat via a first bearing. The connection end of the upper hinge shaft is located outside the upper hinge seat and includes an upper hinge shaft connected to the door plate, and the lower hinge is the upper hinge seat. The lower hinge seat located below the hinge and the lower hinge shaft, the rotating end of the lower hinge shaft is rotatably provided on the lower hinge seat via the second bearing, and the connecting end of the lower hinge shaft. Includes a lower hinge shaft located outside the lower hinge seat and connected to the door plate.

In the single door concrete structure fire protection sealed door described above, preferably the second bearing is a centering roller bearing and the lower hinge is a thrust located below the second bearing. A ball bearing in which the upper roller holder of the thrust ball bearing is in contact with the bottom end of the lower hinge shaft, a connecting shaft, a centering ball head, and a centering support. A joint bearing having a seat, the lower roller holder of the thrust ball bearing is in contact with the connecting shaft, and the centering ball head and the centering support seat form a rolling friction pair to form the centering friction pair. The bronze seat further includes a joint bearing provided in the lower hinge seat.

The technical proposal provided in the examples of the present invention has the following beneficial effects.

By attaching the base to the door plate, attaching the handle to the base, and connecting the transmission mechanism to the lock head assembly with one end connected to the handle and the other end attached to the door plate, the lock head assembly is It can be connected to the door plate to lock or unlock the door plate. The transmission mechanism can realize that one handle can control the unlocking or locking of a plurality of lockhead assemblies at the same time by connecting one end to a handle and the other end to a plurality of lockhead assemblies. Improves effectiveness and improves lock robustness and reliability. The lock head assembly is provided with a return spring and can be automatically returned, a lock copper sleeve and a guide key can be provided to improve motion accuracy, and an oil cup is provided to provide a lock copper sleeve. And the wear of the lock head can be reduced. The adjustable length of the connecting rods of the transmission mechanism can reduce the difficulty of assembly, the number of connecting rods can be flexibly installed and locked according to the actual needs. The number of head assemblies used can be selected to achieve the goal of one handle driving multiple lockhead assemblies. The lockhead assembly and the transmission mechanism may be directly connected or indirectly connected, and the implementation plan can be enriched. The fire protection and sealing performance of the single door concrete structure of this high-speed railway and subway tunnel is excellent.

It is a mounting schematic diagram of the lock device provided in the Example of this invention. It is sectional drawing in AA in FIG. It is sectional drawing in BB in FIG. It is sectional drawing in CC in FIG. It is sectional drawing in DD in FIG. It is a structural schematic diagram of the concrete structure fire protection protection closed door of a single door of a high-speed railway and a subway tunnel provided in the Example of this invention. FIG. 6 is a cross-sectional view taken along the line EE in FIG. It is an enlarged schematic view at I in FIG. FIG. 6 is a cross-sectional view taken along the line FF in FIG. It is a front schematic diagram of the door plate steel frame provided in the Example of this invention. It is an enlarged schematic view in II in FIG. It is a front schematic diagram of the door plate bar arrangement provided in the Example of this invention. It is a structural schematic diagram of the hinge (upper hinge and lower hinge) provided in the Example of this invention. It is a structural schematic diagram in the G direction in FIG. It is sectional drawing in HH in FIG. It is a structural schematic diagram of the automatic return device of this invention. It is a structural schematic diagram of the automatic return device which cut a torsion spring. FIG. 16 is a plan view of FIG. It is a structural schematic diagram which removed the cap plate of FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings based on examples. Each example is provided to illustrate the invention and is not intended to limit the invention. Those skilled in the art will clearly know that modifications and modifications can be made in the present invention without departing from the scope or spirit of the present invention. For example, some features of one embodiment may be used in another to generate another embodiment. Therefore, it is desirable that the present invention include modifications and modifications within the scope of the appended claims and their equivalents.

In the description of the present invention, the terms "vertical", "horizontal", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal" , "Top", "bottom", etc. are indicated orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and it is required that the present invention be configured and operated in a specific orientation. It cannot be understood as a limitation to the present invention because it is merely intended to facilitate the explanation of the present invention. The terms "contact," "connect," and "provide" used in the present invention should be understood in a broad sense, and may be, for example, a fixed connection or a removable connection. , It may be directly connected, or it may be indirectly connected via an intermediate member. One of ordinary skill in the art can understand the specific meaning of the above terms depending on the specific situation.

As shown in FIGS. 1 to 19, an embodiment of the present invention includes a door frame 8, a hinge, a door plate 5, a fireproof packing, an interlocking automatic lock, and an automatic return device in a high-speed railway and subway tunnel. Provides single door concrete construction fire protection sealed doors.

The door frame 8 is provided in the tunnel entrance or the tunnel of a tunnel, for example, a high-speed railway or a subway tunnel, and has an upper horizontal portion and a lower horizontal portion provided opposite to each other, and a left vertical portion and a right portion provided opposite to each other. It has a vertical portion, and the upper horizontal portion, the left vertical portion, the lower horizontal portion, and the right vertical portion sequentially form an annular structure by head-to-tail connection. In practical applications, the upper horizontal portion, the left vertical portion, and the right vertical portion are generally all made of angle steel 80. Specifically, the angle steel 80 includes a first blade plate 801 and a second blade plate 802, and the two blade plates are perpendicular to each other and become square. The inner surfaces of the first wing plate 801 and the second wing plate 802 are both connected to concrete, and the outer surface of the first wing plate 801 is connected to the side wall of the tunnel entrance, to which a lock box (or a lock hole) is provided. The outer surface of the second wing plate 802 provided is the front side surface of the door frame. When a groove sloping section is provided between the sill and the slope ground, the lower horizontal portion may be a steel plate instead of angle steel, and the bottom of the door plate 5 is from the groove sloping portion. The side surface of the bottom portion of the door plate 5 that floats abuts on the side surface of the lower horizontal portion. The fire protection packing is provided on the bonding surface between the door frame 8 and the door plate 5 along the circumferential direction of the door frame, and even if it is the bonding surface of the door frame 8 (for example, the outer surface of the second wing plate). Often, it may be the bonded surface of the door plate 5. The fire protection packing includes a seal pad 82 and a fire protection expansion seal strip 84. The seal pad 82 is provided on the front side surface of the door frame 8, and fireproof expansion seal strips are provided on both side surfaces in the width direction of the pad, for example, by bonding, and then fixedly connected by a fixing screw 83. The fixing screw may be a flutingcoiledhairscrew, the width direction of the seal pad 82 is perpendicular to the longitudinal direction of the seal pad 82, and the longitudinal direction thereof is the direction of the door frame 8. Is consistent with. The two sides of the seal pad 82 are a left side surface and a right side surface, respectively. The seal pad 82 may be a steel plate. The hinge is located on one side of the door frame 8, for example, on the right side in FIG. The door plate 5 is a concrete-structured door plate, and is hinged to the door frame 8 via a hinge to rotate around the vertical axis on one side of the door frame 5. When the fire protection sealed door is closed, the door plate 5 is attached to the door frame 8 and the fire protection packing is sandwiched between the two to realize the sealing of the fire protection sealing door. The interlocking automatic lock includes a base 4, a handle 6, a transmission mechanism 3, and a lock head assembly 1. The base 4 and the lockhead assembly 1 are attached to the door plate 5, the handle 6 is attached to the base 4, and the transmission mechanism 3 is connected to the handle 6 and the lockhead assembly 1, respectively. The automatic return device 90 mainly includes a pedestal, a core shaft 908, and a torsion spring 903, and the pedestal can support the core shaft 908 and the torsion spring 903. The core shaft 908 is attached to the pedestal to support the attachment of the torsion spring 903, and limits the deformation of the torsion spring 903 during use so that the torsion spring 903 is not deformed in the radial direction. The torsion spring 903 is installed on the outside of the core shaft 908, one end of which is the inner tangent end 922 and is connected to the pedestal, and the other end of which is the circumscribed end 909 and is circumscribed to the door plate 5. For example, a mounting pipe 926 for mounting the circumscribed end is provided on the top surface of the door plate. The material of the mounting tube may be copper. When the door plate 5 receives an external force and rotates, the torsion spring 903 elastically deforms by receiving a torque, and when the external force disappears, the door plate 5 is rotated in the direction opposite to the direction in which the door plate 5 receives the external force and rotates. It has the effect of automatically returning the door plate.

Specifically, the base 4 is attached to the door plate 5, the handle 6 is attached to the base 4, and the transmission mechanism 3 has a lock having one end connected to the handle 6 and the other end attached to the door plate 5. By being connected to the head assembly 1, the lock head assembly 1 can be connected to a lock on the door frame to lock or unlock the door plate 5. The transmission mechanism 3 has one end connected to the handle 6 and the other end connected to the plurality of lockhead assemblies 1, so that one handle 6 simultaneously controls the unlocking or locking of the plurality of lockhead assemblies 1. It can be achieved, the locking effect is improved, and the robustness and reliability at the time of locking are improved.

Further, in the present invention, the base 4 includes a first mounting plate 401, a second mounting plate 402, and a shaft sleeve 403, and the first mounting plate 401 and the second mounting plate 402 are door plates, respectively. The first mounting plate 401 is mounted below the inner surface of the door plate 5, and the second mounting plate 402 is mounted below the outer surface of the door plate 5, that is, the first mounting plate 401 is mounted on both the inner and outer sides of the door plate 5. Both the 1 mounting plate 401 and the 2nd mounting plate 402 are mounted inside the door plate 5. The shaft sleeve 403 is mounted within the door plate 5, one end penetrating the first mounting plate 401 and a fixed connection, for example a welded or interference fit connection, to the first mounting plate 401 and the other end being the first. 2 Penetrates the mounting plate 402 and is fixedly connected to the second mounting plate 402, for example, by welding or by tightening. By integrally combining the first mounting plate 401, the second mounting plate 402, and the shaft sleeve 403, it is possible to provide a space for mounting and rotation for the rotational movement of the handle 6.

The handle 6 is mounted within the base 4, specifically within the shaft sleeve 403, to provide a rotatable connection with the shaft sleeve 403. The handle 6 includes a first outer hand 601, a second outer handle 602, and an inner handle 603, and the first outer handle 601 and the second outer handle 602 are connected to the inner handle 603, respectively, and the inner handle 6 is connected to the inner handle 603. The 603 is mounted in the shaft sleeve 403 of the base 4 and is rotatably connected to the shaft sleeve 403. In a rotatable connection scheme, preferably the inner handle 603 is rotatably connected to the shaft sleeve 403 via a bearing 604, i.e., by attaching the bearing 604, the inner handle 603 and the shaft sleeve 403 are connected. In order to realize a movable connection between the two, and at the same time, to balance the load at both ends when the handle 6 is rotated, the inner handle 603 is equipped with one bearing 604 at each end, and the shaft is provided via the two bearings 604. Connected to sleeve 403.

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, and when attached to the base 4, the door plate It becomes easy to operate from both inside and outside of 5. In order to facilitate the attachment of the handle 6 to the base 4, the connection between the first outer handle 601 and the second outer handle 602 and the inner handle 603 is realized by locking and fastening. Specifically, the inner handle 603 is provided with a polygonal end portion, and the polygonal end portion is inserted into the first outer handle 601 and locked and connected to the first outer handle 601. , It can be realized that it rotates in synchronization with the first outer handle 601. The first outer handle 601 is provided with a positioning screw 607, and the positioning screw 607 is screw-connected to the polygonal end portion to form an inner handle 603 between the first outer handle 601 and the inner handle 603. It is possible to guarantee the strength of the connection in the axial direction of. As a preferred method, the polygonal end is a regular polygon, which makes it easy to process, and the polygonal end is tapered along the axial direction so that the polygonal end can be inserted into the first outer handle 601. Becomes easier.

At the time of implementation, the inner handle 603 is connected to the first outer handle 601 via the polygonal end, and the second outer handle 602 is integrated with the inner handle 603 in order to reduce the amount of assembly work. Thereby, the assembly step between the second outer handle 602 and the inner handle 603 can be eliminated, and the total number of members of the present invention can be reduced. Specifically, at the time of attachment, the bearing resnap ring 605 is attached between the bearing 604 and the second outer handle 602 that are close to the second outer handle 602, and the bearing resnap ring 605 has one end of the second outer handle. The bearing resnap ring 605 and the resnap ring nut 606 are provided between the polygonal end and the bearing 604, and the other end of the bearing resnap ring 605 is abutted on the bearing 604. Is abutted against the bearing 604, the other end is abutted against the resnap ring nut 606, and the resnap ring nut 606 is screwed to the inner handle 603 and can perform a fixing function to the bearing 604.

Further, the lock head assembly 1 includes a lock base 101, a lock head 102, and a return spring 103, and the lock base 101 is attached to the door plate 5, specifically, inside the door plate 5. By being able to provide a mounting position for the lock head 102 and the return spring 103, the lock head 102 can be locked and unlocked by being mounted in the lock base 101 and slid with the lock base 101 to return. The spring 103 is mounted in the lock base 101, one end is connected to the lock base 101, the other end is connected to the lock head 102, and the return spring 103 is always in a compressed state in the lock base 101. , The return power can be provided to the lock head 102 (return here means that the return spring 103 can lock the lock head 102 by the action of the elastic force).

Preferably, a lock gasket 104 is provided between the lock base 101 and the door plate 5, and the mounting position of the lock base 101 inside the door plate 5 is adjusted by adjusting the thickness of the lock gasket 104. That is, by adjusting the distance between the lock base 101 and the inner surface of the door plate 5, the mounting position of the lock head 102 can be further adjusted. Further, a lock pad 109 is provided between the lock gasket 104 and the door plate 5, and the thickness of the lock pad 109 may be thicker than the thickness of the lock gasket 104 and N times the thickness of the lock gasket 104. However, N is a positive number of 1 or more, for example 2, 3, 4, 5, 6, 7, and in this way, the lock pad 109 realizes rough adjustment of the mounting position of the lock head 102. The lock gasket 104 makes it possible to finely adjust the mounting position of the lock head 102.

Further, in order to facilitate the smooth operation of the lock head assembly 1, a lock copper sleeve 105 is provided at a position where the lock head 102 and the lock head 102 slide together inside the lock base 101, and the lock copper sleeve 105 is tightened. It is attached to the inside of the lock base 101 by fitting, and by slide-matching with the lock head 102, the accuracy when the lock head 102 is translated can be improved. One end of the lock head 102 that aligns with the lock hole is a wedge-shaped end to facilitate entry and exit of the lock head 102 into the lock box (or lock hole). In order to guarantee the translation accuracy of the lock head 102 and prevent twisting of the lock head 102 when it is translated, the present invention provides the lock head 102 with a guide key 106, and the guide key 106 is tightened to the lock head 102. A slide guide is provided to the lock head 102 by being fitted and connected and slid to the lock base 101. As a maintenance structure of the lock head assembly 1, an oil cup is provided on the lock base 101, oil can be filled between the lock base 101 and the lock head 102, and the lock base 101 (lock copper sleeve in the lock base 101) can be filled. Always held in oil or grease lubrication between 105) and the lock head 102, it reduces wear on the lock copper sleeve 105 and lock head 102.

Further, the transmission mechanism 3 includes a rotary arm plate 301 attached to the handle 6 and a connection rod connected to the rotary arm plate 301, and the rotary arm plate 301 has a first opening and a second opening. The handle 6 is inserted into the first opening and tightened into the first opening, and the connection rod is rotatably connected to the second opening at one end and the lock head at the other end. Directly or indirectly connected to assembly 1. At the time of use, the handle 6 drives the rotation of the rotary arm plate 301, the rotary arm plate 301 drives the movement of the connecting rod, and further drives the lock head 102 away from the lock hole. And / or when the second outer handle 602 does not directly receive a force, the return spring 103 drives the lock head 102 to return, and further drives the handle 6 to return by the connecting rod.

For ease of assembly, the connecting rod includes a rod body 302, a movable rod head 303, and a rod head nut, the rod body 302 being screwed to the movable rod head 303 and movable with the rod body 302. By adjusting the length of the screw connection with the rod head 303, the length of the connecting rod can be finely adjusted, the assembly problem due to the assembly error and / or the manufacturing error is solved, and the difficulty of assembly is reduced. be able to. Further, the present invention specifies the length of the connecting rod by fastening the double nut so that the length of the connecting rod does not change even after assembly, that is, the rod head nut is attached to the rod body 302 and It is connected to the movable rod head 303, and the rod head nut is brought into contact with the movable rod head 303 to form a fastening structure for fastening the double nut together with the movable rod head 303. At the time of implementation, one connecting rod may be provided with one movable rod head 303, or two movable rod heads 303 may be provided. Preferably, one connecting rod is provided with one movable rod head 303, one end of the rod body 302 is screwed to the movable rod head 303, and the other end is provided with a fixed rod head to reduce the amount of assembly work. Can be reduced. The movable rod head 303 or the fixed rod head is hinged to the second opening.

In the present embodiment, the number of connecting rods may be one or a plurality. When there is one connecting rod, one handle 6 corresponds to one connecting rod and one lockhead assembly 1, that is, one handle 6 drives one lockhead assembly 1. Then, the door plate 5 can be locked on one side of the door plate 5. When there are a plurality of connecting rods, one handle 6 corresponds to a plurality of connecting rods and a plurality of lockhead assemblies 1, and the number of connecting rods and the number of lockhead assemblies 1 are equal and correspond one-to-one. One handle 6 may drive the operation of the plurality of lockhead assemblies 1 and lock the door plate 5 on one side of the door plate 5, or the door plate 5 on the two side sides of the door plate 5. The door plate 5 may be locked on the three or four side sides of the door plate 5.

Preferably, the number of connecting rods is an even number of two or more, 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 of the handle 6. The connecting rod located above and the connecting rod located below the handle 6 are symmetrically distributed about the first opening, and the receiving force when the door plate 5 is locked can be balanced.

Further, the lock head assembly 1 and the transmission mechanism 3 may be in direct contact with each other or indirectly. When in direct contact, the handle 6 drives the operation of the transmission mechanism 3, the transmission mechanism 3 drives the operation of the lock head 102, and in the case of indirect contact, the handle 6 drives the operation of the transmission mechanism 3. The transmission mechanism 3 drives the operation of the lock head 102 via the medium.

As an embodiment in which the lockhead assembly 1 and the transmission mechanism 3 are in direct contact with each other, the lockhead assembly 1 is hinged to the transmission mechanism 3. In the implementation plan, the rotary arm plate 301 is attached to the second outer handle 602, locked and assembled to the second outer handle 602, and is synchronized along the axial direction of the inner handle 603 with the rotation of the handle 6. And rotate. One end of the connecting rod is hinged to the rotary arm plate 301, and the other end is hinged to the lock head 102. At the time of use, the handle 6 drives the rotation of the rotary arm plate 301, the rotary arm plate 301 drives the movement of the connecting rod, and further drives the lock head 102 to translate to the location where the connecting rod is located.

As an implementation plan in which the lockhead assembly 1 and the transmission mechanism 3 are indirectly contacted, the lockhead assembly 1 and the transmission mechanism 3 are indirectly contacted by the pick assembly 2. The pick assembly 2 includes a fixed shaft 203, a lock head pick 201, a pick resnap ring 207, a fastening nut 205, and a nut cotter 206, and the fixed shaft 203 is attached to the door plate 5, so that the attachment position is set. Can be provided, the lockhead pick 201 is rotatably connected to a fixed shaft 203, one end hinged to the transmission mechanism 3 and the other end mounted on the lockhead 102 of the lockhead assembly 1. By doing so, the lock head 102 can be picked and the lock head 102 can be translated, and the pick resnap ring 207 is attached to the fixed shaft 203 and connected to the lock head pick 201 in the axial direction of the fixed shaft 203. The position of the lockhead pick 201 can be limited, and the fastening nut 205 is attached to the fixed shaft 203, screwed to the fixed shaft 203, and connected to the pick resnap ring 207 to limit the position of the pick resnap ring 207. The fastening nut 205 can be locked by attaching the nut cotter 206 to the fastening nut 205.

Preferably, by further providing the lock head pick 201 with a position limiting device, it is possible to prevent the lock head assembly 1 from being brought into contact with the lock head assembly 1 during operation and to prevent a decrease in fatigue life due to overcompression of the return spring 103. The position limiting device includes a position limiting bolt and a position limiting nut, the position limiting bolt is screwed to the lockhead pick 201, and the position limiting nut is screwed to the position limiting bolt to limit the position. The bolt can be locked. By adjusting the overhang length of the position limiting bolt in the lock head pick 201 at the time of installation, the maximum translation distance when the lock head 102 operates can be adjusted, and the maximum compression when the return spring 103 is used. The amount can be adjusted.

Further, in order to improve the motion accuracy of the lock head pick 201 and reduce wear, a pick copper sleeve 202 is provided in the lock head pick 201 at a position rotatably connected to the fixed shaft 203. In order to facilitate adjusting the length of the lockhead pick 201 from the inner surface of the door plate 5, in the present invention, pick adjustment gaskets 204 are provided on both sides of the lockhead pick 201, and the pick adjustment gasket 204 is attached to the fixed shaft 203. By attaching the lock head pick 201, the position of the lock head pick 201 can be adjusted, and the lock head pick 201 can be operated in the same plane together with the lock head 102 and the transmission mechanism 3, so that the operation becomes smooth and labor can be saved. can.

In the hinge connection of the present invention, the movable rod head 303 and the rotary arm plate 301, the lock head pick 201 and the fixed rod head, and the lock head 102 and the fixed rod head all have pin shafts at the time of hinge connection. They are connected in series via, then locked to the pin shaft by a cotter, thus achieving a hinged connection.

The door plate 5 includes a door plate frame 51, a door plate reinforcing frame 52, and concrete. The door plate frame 51 is ring-shaped, for example, rectangular, and can be formed by being connected by two longitudinal groove steels and two lateral groove steels, and the groove bottom of each groove steel is the groove bottom of the door plate frame 51. The inner surface. The door plate reinforcing frame 52 is connected to the inner side surface of the door plate frame 51 and is located in the space formed by the door plate frame 51. The concrete is cast in the space formed by the door plate frame 51 and the door plate reinforcing frame 52. The door plate bar arrangement frame 52 includes a lateral main bar 521, a vertical main bar 522, and a binding bar 523, and the plurality of horizontal main bars 521 and the plurality of vertical main bars 522 intersect with each other and have a grid. It is connected like a. A plurality of grid-like structures can be provided in the width direction of the door plate 5. Along the width direction of the door plate 5, the intersection formed by the two opposing vertical main bars 522 and the lateral main bar 521 is connected via the binding bar 523. In order to reinforce the connection strength of the door plate reinforcing bar 52, the two ends of the binding bar 523 are both semicircular hooks, and one end of the lateral main bar 521 and the vertical main bar 522 is eventually Is also the end of the rebar of the hook directly attached. Before placing concrete, the outer surface of the door plate 5 is made into a bottom mold, and then the steel bars are welded or bound to form the door plate reinforcing frame 52. After the door plate 5 is formed, the exposed metal surface (the surface of the door plate frame and the surface of the door plate reinforcement frame) should be coated with two rust preventive paints, for example, lead tan rust preventive paint. A fireproof coating 50 should be installed on the inner surface of the door plate facing the tunnel, for example, a fireproof paint should be applied, and the paint may be a non-expandable concrete member fireproof paint. The following hinge shafts are welded to the door plate frame 51 before placing concrete in order to facilitate the production.

In order to stably rotate and support the door plate 5, the number of hinges is two, and the two hinges are the upper hinge 71 and the lower hinge 72, respectively, along 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 provided on one side of the door frame 8 to form cavities with openings at both ends, the two openings are the upper and lower openings, respectively, and the end cap 714 is covered by the upper opening. It can be provided in the upper opening by bolts and gaskets. The rotating end of the upper hinge shaft 712 is provided by rotating in the cavity of the upper hinge seat 711 via the first bearing 713, and the free end of the upper hinge shaft 712 is a door plate when the upper hinge shaft 712 rotates. It is connected to the door plate 5 so as to drive the rotation of 5. In order to stably fix the first bearing 713, the upper hinge 71 further includes a positioning tube 717. The inner wall of the cavity of the upper hinge seat 711 is provided with a ring-shaped protrusion 718 that abuts on the lower end surface of the outer ring of the bearing of the first bearing 713, and the lower end surface of the positioning tube 717 is on the upper end surface of the outer ring of the bearing of the first bearing 713. The upper end surface of the positioning tube 717 is abutted against the lower bottom surface of the end cap 714. The first bearing 713 may be a centering 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 provided on the same side of the door frame 8 to form a cavity having an opening at the upper end. The rotating end of the lower hinge shaft 722 is rotatably provided in the cavity of the lower hinge seat 721 via the second bearing 723, and the free end of the lower hinge shaft 722 is a door plate when the lower hinge shaft 722 rotates. It is connected to the door plate 5 so as to drive the rotation of 5. The upper opening is covered with a dust cover 724 to prevent dust from entering the cavity, and the dust cover 724 is brought into contact with the outside of the lower hinge shaft 722 through a through hole formed therein. ..

The lower hinge 72 further includes a thrust ball bearing 725 and a joint bearing 726. The thrust ball bearing 725 is for alignment and support, is located below the second bearing 723, and the upper roller holder 7251 of the thrust ball bearing 725 is in contact with the bottom end of the lower hinge shaft 722. To. The joint bearing 726 is located below the thrust ball bearing 725 and is for alignment and support. The joint bearing 726 includes a connecting shaft 7261, a centering ball head 7262, and a centering support 7263. The connecting shaft 7261 has a stepped shape, the lower roller holder 7252 of the thrust ball bearing 725 is in contact with the upper end of the connecting shaft 7261, and the stepped surface of the connecting shaft 7261 is in contact with the lower end surface of the lower roller holder 7252. .. The centering ball head 7262 is provided on the bottom surface of the connecting shaft 7261, and by forming a rolling friction pair together with the centering support 7263, the center lines of the upper and lower hinge shafts are in the same straight line at the time of use, and the door. It is guaranteed to be parallel to the centerline of the board and parallel to the centerline of the door frame. To provide more stable support, the lower hinge 72 further includes a load bearing support 727 that is provided below the lower hinge seat 721 and abuts against the bottom edge of the lower hinge seat 721.

The hinges further include a shaft sleeve 720 to further improve the rotational alignment of the upper and lower hinges. The upper end of the shaft sleeve 720 is in contact with the free end of the upper hinge shaft 712, the lower end of the shaft sleeve 720 is in contact with the free end of the lower hinge shaft 722, and the shaft sleeve 720 is connected to the door plate 5. .. The shaft sleeve 720 is bolted to the door plate 5 by the first connecting plate 7200 and welded to the door plate 5 by the second connecting plate 7201. The first connecting plate 7200 is closer to the central part of the shaft sleeve 730 than the second connecting plate 7201. At the time of mounting, the shaft sleeve 730 is initially fixedly connected to the door plate 5 by bolts, and then connected by welding, so that the mounting accuracy can be easily maintained when connected to the door plate 5.

The upper hinge 71 includes a first inner plate 716 and an upper hinge pedestal 715. The front surface of the first inner plate 716 is sequentially connected to the inner surface of the angle steel 80, which is the rear surface of the door frame 8, and the rear surface of the upper hinge pedestal 715 along the horizontal direction. The front surface of the upper hinge pedestal 715 is connected to the upper hinge seat 711, and the thickness of the upper hinge pedestal 715 is equal to the thickness of the angle steel forming the door frame 8. At this time, the upper hinge pedestal 715 is the door frame 8. It is aligned with. The lower hinge 72 includes a second inner plate and a lower hinge pedestal 728. The front surface of the second inner plate 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 lower hinge pedestal 728 along the horizontal direction. The front surface of the lower hinge pedestal 728 is connected to the lower hinge seat 721, and the thickness of the lower hinge pedestal 728 is equal to the thickness of the angle steel forming the door frame 8. At this time, the lower hinge pedestal 728 is the door frame 8. In this way, the connection strength of the concrete around the upper hinge 71 and the lower hinge 72 and the door frame 8 can be improved, and the door plate main body can be stably supported. The above connection method may be a bolt connection.

The right end of the upper hinge pedestal 715 floats from the upper hinge seat 711 with respect to the first inner plate 716, and the right end of the lower hinge pedestal 728 floats from the lower hinge seat 721 with respect to the second inner plate, respectively. At the time of application, the upper hinge pedestal 715 and the lower hinge pedestal 728 are brought into contact with the concrete wall to improve the stability of the connection. Between the upper hinge pedestal 715 and the upper hinge seat 711, and between the lower hinge pedestal 728 and the lower hinge seat 721, the center lines of the upper and lower hinge axes are the same as the center lines of the door body of the door plate, respectively. An adjusting gasket 729 may be provided for adjusting so that it is located on a flat surface.

Since the door plate has a concrete structure, in order to support the door plate more stably when the door plate is open for a long time, this fire protection sealed door includes a jack 930 and a jack support 931. Including further. The jack 930 is provided on the door plate 5 by the jack bottom plate 932, and the overhanging end of the jack is directed downward. The jack support is provided below the jack when the door plate is open. When the door plate 5 is in the open state, the jack 930 operates and its overhanging end projects downward into the jack support 931 so as to provide support to the door plate 5.

In the present invention, the pedestal of the automatic return device includes a pedestal plate 901, a first bracket 902, and a second bracket 904. The first bracket 902 and the second bracket 904 are attached to the pedestal plate 901, and the pedestal plate 901, the first bracket 902, and the second bracket 904 may have an integral structure, and may be integrally formed by a process such as complete welding. May be connected. The first bracket 902 is provided parallel to the second bracket 904, the first bracket 902 is provided with a first mounting hole, the second bracket 904 is provided with a second mounting hole, and the first mounting hole is inscribed. It can be connected to the end 922 and the second mounting hole can be fitted with a core shaft 908. The inner tangent end 922 of the torsion spring 903 is connected to the first mounting hole, the circumscribed end 909 is connected to the door plate 5, and the return power can be accumulated when the door plate 5 is rotated.

Further, in the present invention, the pedestal plate 901 is provided with the first circumscribed hole and the second circumscribed hole 911. A hook bolt 912 and a bolt washer are provided in the first external hole, and the hook bolt 912 can fix the pedestal to the mounting support by externally contacting the mounting support. Located between the pedestal plates 901, the bolt washer is a spring washer, so that the hook bolt 912 can be prevented from loosening. By circumscribing the second external contact hole 911 to the isolation medium attachment 924, the attachment accuracy of the automatic return device can be improved, and the service life of the present invention can be extended.

Further, in the present invention, the core shaft 908 includes a core shaft 908 main body, a free end, and an assembled end, the core shaft 908 main body can support a torsion spring 903, and the free end and the assembled end are Each is located on both sides of the core shaft 908 main body, and the assembly ends are mounted in the second mounting hole and fixedly connected to the second mounting hole.

Preferably, the assembly ends are provided with internal threads, which are connected to the assembly bolts 907, i.e., the core shaft 908 is attached to the second bracket 904 by bolting and fixed to the second bracket 904. Be connected. A first washer 905 and a second washer 906 are provided between the assembly bolt 907 and the second bracket 904, the first washer 905 is connected to the second bracket 904, and the first gasket has a second mounting hole with an inner diameter of the second mounting hole. Since the outer diameter is smaller than the diameter of the second mounting hole and larger than the diameter of the second mounting hole, the assembly bolt 907 can ensure that the core shaft 908 is fixed to the second bracket 904, and the second washer 906 , The first washer 905 and the assembly bolt 907 are in contact with each other, and the second washer 906 is a spring washer, which provides a preload force for mounting the core shaft 908 and prevents the core shaft 908 from loosening after mounting. be able to.

Further, in the present invention, an adjusting mechanism is further included, and the adjusting mechanism can adjust the initial torque of the torsion spring 903 by being attached to the first bracket 902 and in contact with the inscribed end, so that the automatic return device can be provided. After application, not only can the door plate 5 be easily rotated, but also automatic recovery is possible.

Preferably, the adjusting mechanism includes an adjusting shaft 915, a ratchet 914, an adjusting cover, a claw 917, and a compression spring 925, the adjusting shaft 915 being mounted in the first mounting hole and the first mounting. Rotably connected to the hole and in contact with the inner tangent end 922, the ratchet 914 is attached to the adjustment shaft 915, the adjustment cover is attached to the first bracket 902, located outside the ratchet 914, and the claw 917. Is mounted between the adjustment cover and the ratchet 914, the claw 917 is located behind the ratchet 914 in the return direction of the torsion spring 903, and the compression spring 925 is mounted between the ratchet 914 and the claw 917. By twisting the adjusting shaft when adjusting the initial torque, the initial torque of the compression spring 925 can be adjusted. During use, the claw 917 is located behind the ratchet 914 in the mounting direction, so that the initial torque does not decrease, but only increases, based on the characteristics of the unidirectional rotation of the ratchet 914, and the torsion spring 903. It is possible to correct the damping of the elastic force to some extent.

Further, in the present invention, the adjusting shaft 915 includes a receiving end, a linking portion 921, and an overhanging end 923. The receiving end includes a polygonal log 918 and a receiving tray 920, preferably the polygonal log 918 is a regular polygon, and the ratchet 914 is mounted on the polygonal log 918 and on the receiving tray 920. By abutting, it can rotate in synchronization with the adjustment shaft 915. The linking portion 921 is in contact with the receiving end, is mounted in the first mounting hole, is rotatably connected to the first mounting hole, and is preferably a gap alignment of H8 / f7. The overhanging end 923 is in contact with the linking portion 921 and is located in the core shaft 908, and does not contact the core shaft 908, so that the volume of the automatic return device can be reduced.

Further, in the present invention, the adjusting cover includes a cap plate 916 and a cover body 919, the cover body 919 is cylindrical, and a plurality of screw holes are evenly distributed on the top surface, and the cover body 919 is , Attached above the first bracket 902 and fixedly connected to the first bracket 902, eg, welded. The cap plate 916 is attached to the cover body 919, the cap plate 916 is provided with light holes, and a plurality of via holes corresponding to the screw holes on a one-to-one basis are provided, and a plurality of via holes are provided between the cap plate 916 and the cover body 919. The fastening is realized by the screw 913 of. In use, the cap plate 916 can press the ratchet 914, thereby locking the ratchet 914, and the light hole can provide an overhang position for the polygonal log 918, thereby providing torque. It becomes easier to operate when adjusting.

Preferably, the claw 917 is a cylinder, the height of the claw 917 is smaller than the thickness of the ratchet 914, the resistance when adjusting the torque is reduced, and the cap plate 916 presses the claw 917. It is possible to avoid uncertainties caused by.

The concrete-structured door plate is relatively heavy, and in order to facilitate the automatic return of the door plate, this fire protection sealed door further includes a door closer 900. One end of the door closer 900 is attached to the upper horizontal portion of the door frame 8, and the other end is connected to the top surface of the door plate. One end of the door closer is farther from the rotation axis of the door plate than the automatic return device.

The process of mounting and adjusting the automatic return device will be described below. The process of installing and adjusting the auto-reset device
The first step in fully assembling the auto-return device,
The pedestal is attached to the support and the isolation medium attachment 924, the circumscribed end 909 is attached to the door plate 5, and the connection point between the circumscribed end 909 and the door plate 5 and the axis of the torsion spring 903 are connected to the door plate 5. The second step to ensure that it is parallel to the plane of rotation of
Place the door plate 5 in the return position, loosen the screw 913 between the cap plate 916 and the cover body 919, twist the polygonal log 918 of the adjustment shaft 915, adjust the initial torque of the torsion spring 903, and the adjustment is completed. This includes a third step of completing the installation and debugging of the automatic return device by fixing the screw 913.

As can be seen from common general knowledge, the present invention can be realized by other embodiments within a range that does not deviate from its spiritual substance or necessary features. Therefore, each of the above-disclosed implementation proposals is merely an example of each aspect, and is not the only one. All modifications within the scope of the present invention or within the scope equivalent to the scope of the present invention are included in the present invention.

1 Lockhead assembly 101 Lockbase 102 Lockhead 103 Return spring 104 Lock gasket 105 Lock copper sleeve 106 Guide key 2 Pick assembly 201 Lockhead pick 202 Pick copper sleeve 203 Fixed shaft 204 Pick adjustment gasket 205 Fastening nut 206 Nut cotter 207 Pick resnap ring 3 Transmission mechanism 301 Rotating arm plate 302 Rod body 303 Movable rod head 4 Base base 401 1st mounting plate 402 2nd mounting plate 403 Shaft sleeve 5 Door plate 50 Fireproof coating 51 Door plate frame 52 Door plate Reinforcing frame 521 Lateral main reinforcement 522 Vertical main bar 523 Cohesion bar 6 Handle 601 1st outer handle 602 2nd outer handle 603 Inner handle 604 Bearing 605 Bearing resnap ring 606 Resnap ring nut 607 Localization screw 71 Upper hinge 711 Upper hinge seat 712 Upper hinge shaft 713 1 Bearing 714 End cap 715 Upper hinge pedestal 716 1st inner plate 717 Positioning pipe 718 Ring-shaped convex 720 Shaft sleeve 7200 1st connection plate 7201 2nd connection plate 72 Lower hinge 721 Lower hinge seat 722 Lower hinge shaft 723 2nd bearing 724 Dust cover 725 Thrust ball bearing 7251 Upper roller holder 7252 Lower roller holder 726 Joint bearing 7261 Connection shaft 7262 Alignment ball head 7263 Alignment support 727 Load receiving support 728 Lower hinge pedestal 729 Adjustment gasket 8 Door frame 80 Angle steel 801 1 wing plate 802 2nd wing plate 82 seal pad 83 fixing screw 84 fireproof expansion seal strip 90 automatic return device 901 pedestal plate 902 1st bracket 903 torsion spring 904 2nd bracket 905 1st washer 906 2nd washer 907 assembly bolt 908 core Shaft 909 External contact end 911 Second external contact hole 912 Hook bolt 913 Screw 914 Ratchet 915 Adjustment shaft 916 Cap plate 917 Claw 918 Polygonal log 919 Cover body 920 Receiving tray 921 Linkage part 922 Inner tangent end 923 Overhanging end 924 925 Compression Spring 926 Mounting Tube 900 Door Closer 9 30 Jack 931 Jack Support 932 Jack Bottom Plate

Claims (10)

A single door concrete structure fire protection sealed door for high-speed railways and subway tunnels, and the single door concrete structure fire protection sealed door is automatically linked with a door frame, a hinge, a door plate, and a fire packing. Including a lock and an automatic return device,
The door frame is provided in the tunnel and
The hinge is located on one side of the door frame and
The door plate is a concrete structure door plate, and the door plate is hinged to the door frame via the hinge so as to rotate with respect to the door frame.
The fire protection packing is provided on the bonding surface between the door frame and the door plate.
The interlocking automatic lock includes a base, a handle, a transmission mechanism, and a lock head assembly, the base and the lock head assembly are attached to the door plate, and the handle is attached to the base. Attached, the transmission mechanism is connected to each of the handle and the lockhead assembly.
The automatic return device includes a pedestal, a core shaft, and a torsion spring, and the pedestal is provided above the hinge so as to support the core shaft and the torsion spring. Attached to the pedestal, the torsion spring is mounted on the outside of the core shaft, one end of the torsion spring is an inner tangent end and is connected to the pedestal, and the other end of the torsion spring is an outer tangent end. It is connected to the top of the door plate,
It features a single door concrete structure fire protection sealed door for high speed rail and subway tunnels. The lock head assembly includes a lock base, a lock head, and a return spring.
The lock base is mounted on the door plate, the lock head is mounted in the lock base and slide-assembled with the lock base, the return spring is mounted in the lock base, and one end of the lock is locked. Connected to the base and the other end connected to the lockhead
Preferably, a lock gasket for adjusting the mounting position of the lock base is provided between the lock base and the door plate.
Inside the lock base, a lock copper sleeve is provided at a position where it slides with the lock head.
One end of the lock head is a wedge-shaped end to be inserted into a lock hole provided in the door frame.
The lock head is provided with a guide key that slides together with the lock base to provide a slide guide to the lock head.
The single-door concrete structure fire protection sealed door according to claim 1. The transmission mechanism includes a rotary arm plate attached to the handle and a connecting rod connected to the rotary arm plate.
The rotary arm plate includes a first opening and a second opening, the handle is inserted into the first opening, and one end of the connecting rod rotates to the second opening. Possiblely connected, the other end is directly or indirectly connected to the lockhead assembly, the connecting rods may be one or more and have a one-to-one correspondence with the lockhead assembly.
Preferably, the number of the connecting rods is an even number of two or more, 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 rod located above the handle and the connecting rod located below the handle are symmetrically distributed about the first opening.
The single-door concrete structure fire protection sealed door according to claim 1. The connecting rod includes a rod body, a movable rod head, and a rod head nut.
The rod body is screwed to the movable rod head, and the rod head nut is attached to the rod body and connected to the movable rod head.
One end of the rod body is screwed to the movable rod head, and a fixed rod head is provided at the other end of the rod body.
The movable rod head or the fixed rod head is hinged to the second opening.
The lockhead assembly is hinged to the transmission mechanism.
The single-door concrete structure fire protection sealed door according to claim 3. Further including a pick assembly, the transmission mechanism is connected to the lockhead assembly via the pick assembly.
The pick assembly includes a fixed shaft, a lockhead pick, a pick resnap ring, a fastening nut, and a nut cotter.
The fixed shaft is attached to the door plate to provide a mounting position, the lockhead pick is rotatably connected to the fixed shaft, one end is hinged to the transmission mechanism, and the other end is said. Mounted on the lockhead assembly, the pick resnap ring is attached to the fixed shaft and connected to the lock head pick, and the fastening nut is attached to the fixed shaft and connected to the pick resnap ring. , The nut cotter is attached to the fastening nut,
Preferably, the lockhead pick is further provided with a position limiting device that comes into contact with the lockhead assembly during operation, the position limiting device comprising a position limiting bolt and a position limiting nut, said position. The limiting bolt is screwed to the lockhead pick and the position limiting nut is screwed to the position limiting bolt.
In the lock head pick, a pick copper sleeve is provided at a position rotatably connected to the fixed shaft.
Pick adjustment gaskets are provided on both sides of the lockhead pick, and the pick adjustment gaskets are attached to the fixed shaft.
The single-door concrete structure fire protection sealed door according to any one of claims 1 to 4, wherein the door is characterized by fire protection. The pedestal includes a pedestal plate, a first bracket, and a second bracket.
The first bracket and the second bracket are attached to the pedestal plate, the first bracket is provided in parallel with the second bracket, and the first mounting hole for attaching the inscribed end to the first bracket is provided. The second bracket is provided with a second mounting hole for mounting the core shaft.
The pedestal plate is provided with a first circumscribed hole and a second circumscribed hole.
A hook bolt and a bolt washer are provided in the first circumscribed hole, the bolt washer is a spring washer, the hook bolt circumscribes the mounting support, and the second circumscribed hole is used as an isolation medium fitting. Circumscribed
Preferably, the core shaft includes a core shaft body, a free end, and an assembly end.
The core shaft body is used to support the torsion spring, the free end and the assembled end are located on both sides of the core shaft body, respectively, and the assembled end is mounted in the second mounting hole. Be,
The single-door concrete structure fire protection sealed door according to claim 1. An internal screw to be screwed with the assembly bolt is provided at the assembly end, a first washer and a second washer are provided between the assembly bolt and the second bracket, and the first washer is the second washer. The second washer is in contact with the bracket, the second washer is in contact with each of the first washer and the assembly bolt, and the second washer is a spring washer.
Preferably, it further comprises an adjusting mechanism, which is attached to the first bracket and in contact with the inscribed end to adjust the initial torque of the torsion spring.
Preferably, the adjusting mechanism includes an adjusting shaft, a ratchet, an adjusting cover, a claw, and a compression spring.
The adjusting shaft is mounted in the first mounting hole, rotatably connected to the first mounting hole and in contact with the inscribed end, and the ratchet is mounted in the adjusting shaft and the adjusting cover. Is attached to the first bracket and is located outside the ratchet, the claw is attached between the adjustment cover and the ratchet, and the compression spring is attached between the ratchet and the claw. Be,
The single door concrete structure fire protection sealed door according to claim 6. The adjusting shaft includes a receiving end, a linking portion, and an overhanging end.
The receiving end includes a polygonal log and a receiving tray, the ratchet is mounted on the polygonal log and abuts on the receiving tray, and the linking portion is in contact with the receiving end. It is mounted in the first mounting hole and rotatably connected to the first mounting hole, the overhanging end is in contact with the linking portion and is located in the core shaft.
Preferably, the adjustment cover comprises a cap plate and a cover body.
The cover body is cylindrical and is attached above the first bracket, the cap plate is attached to the cover body, the cap plate is provided with a light hole, and the cap plate has the ratchet. Press and the light hole provides an overhang position for the polygonal log.
The single door concrete structure fire protection sealed door according to claim 7. The number of the hinges is two, and the two hinges are the upper hinge and the lower hinge, respectively, along the vertical direction.
The upper hinge is
The upper hinge seat provided on one side of the door frame and
An upper hinge shaft, the rotating end of the upper hinge shaft is rotatably provided on the upper hinge seat via a first bearing, and the connecting end of the upper hinge shaft is located outside the upper hinge seat. Including the upper hinge shaft, which is connected to the door plate,
The lower hinge is
The lower hinge, which is located below the upper hinge,
A lower hinge shaft, the rotating end of the lower hinge shaft is rotatably provided on the lower hinge seat via a second bearing, and the connecting end of the lower hinge shaft is located outside the lower hinge seat. And, including the lower hinge shaft, which is connected to the door plate,
The single-door concrete structure fire protection sealed door according to claim 1. The second bearing is a centering roller bearing.
The lower hinge is
A thrust ball bearing located below the second bearing, the thrust ball bearing in which the upper roller holder of the thrust ball bearing is in contact with the bottom end of the lower hinge shaft.
A joint bearing having a connecting shaft, a centering ball head, and a centering support, wherein a lower roller holder of the thrust ball bearing is in contact with the connecting shaft, and the centering ball head and the centering are aligned. A rolling friction pair is formed with the support seat, and the centering support seat further includes a joint bearing provided in the lower hinge seat.
The single door concrete structure fire protection sealed door according to claim 9.

Images