JP7196342B2 - Single Door Concrete Structural Fire Protection Enclosed Door for High Speed Rail Tunnel or Subway Tunnel - Google Patents

Description

The present invention belongs to the technical field of protection engineering, and particularly relates to a single-door concrete structure fire protection closed door for high-speed rail tunnels or subway tunnels.

By installing the fire door in the passageway, when an accident, such as an explosion or fire, occurs in the passageway, the accident will only have a destructive effect on one side of the passageway, while the other side of the firedoor will be destroyed. It can be made to have little impact.

Effectively closing the fire door when an accident occurs is a key measure to avoid increasing the destructive effects of the accident. The lock head is controlled to unlock or lock, that is, the door plate and the door frame are brought into contact with each other through one lock head to achieve the door lock effect, but the lock effect is , 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, the door frame comprising: provided in a tunnel, the hinge is located on one side of the door frame, the door plate is a concrete structure door plate, the door plate is rotated with respect to the door frame, the hinge is The fireproof packing is provided on the bonding surface between the door frame and the door plate, and the interlocking automatic lock includes a base, a handle, a transmission mechanism, and a lock. a head assembly, wherein the base and the lock head assembly are attached to the door plate, the handle is attached to the base, and the transmission mechanism is attached to each of the handle and the lock head assembly. The automatic return device includes a pedestal, a core shaft, and a torsion spring, wherein the pedestal is provided above the hinge to support the core shaft and the torsion spring; is attached to the pedestal, the torsion spring is provided outside 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 To provide a single-door concrete structure fire protection sealed door for high-speed railway and subway tunnels, which is a circumscribing end and connected to the top surface of a door plate.

In the single-door concrete structure fire protection enclosure door as described above, preferably said lock head assembly includes a lock base, a lock head and a return spring, said lock base being connected to said door mounted on a plate, the lock head mounted in the lock base and slidingly mated with the lock base, the return spring mounted in the lock base, one end connected to the lock base and the other end is connected to the lock head.

In the single-door concrete structure fire protection enclosure door as described above, preferably a lock gasket is provided between said lock base and said door plate for adjusting the mounting position of said lock base, and said lock is Inside the base, a lock copper sleeve is provided at a place where it slides with the lock head, one end of the lock head is a wedge-shaped end that is inserted into the lock hole provided in the door frame, and the lock head has A guide key is provided for sliding engagement with the lock base to provide a sliding guide for the lock head.

In the single door concrete structure fire protection enclosure door as described above, preferably said transmission mechanism comprises: a rotating arm plate attached to said handle; a connecting rod connected to said rotating arm plate; wherein the rotating arm plate includes a first aperture and a second aperture, the handle is inserted through the first aperture, and the connecting rod has one end with the second aperture and the other end is directly or indirectly connected to the lock head assembly, and the connecting rod is one or more and corresponds one-to-one with the lock head assembly, preferably is an even number of two or more connecting rods, half of the connecting rods are positioned above the handle, the other half of the connecting rods are positioned below the handle, and the The connecting rods located above the handle and the connecting rods located below the handle are symmetrically distributed about the first aperture.

In the single-door concrete structure fire protection enclosure door as described above, preferably said connecting rod comprises a rod body, a movable rod head and a rod head nut, said rod body comprising said the rod head nut is attached to the rod body and connected to the movable rod head; one end of the rod body is threadedly connected to the movable rod head; The other end is provided with a fixed rod head, the movable rod head or the fixed rod head is hingedly connected to the second aperture, and the locking head assembly is hingedly connected to the transmission mechanism.

In the single-door concrete structure fire protection enclosure door as described above, preferably further comprising a pick assembly, the transmission mechanism being connected to the lock head assembly via the pick assembly, the pick assembly comprising: , a fixed shaft, a lock head pick, a pick re-snap ring, a fastening nut, and a nut cotter, wherein the fixed shaft is attached to the door plate to provide a mounting position, and the lock head pick is attached to the rotatably connected to a fixed shaft, one end hinged to the transmission mechanism and the other end mounted to the lock head assembly, the pick snap ring mounted on the fixed shaft and on the lock head; Connected to a pick, the tightening nut is attached to the fixed shaft and is connected to the pick snap ring, and the nut cotter is attached to the tightening nut.

In the single-door concrete structure fire protection enclosure door as described above, preferably said lock head pick is further provided with a position limiter which abuts against said lock head assembly in operation, said position limiter includes a position limit bolt and a position limit nut, said position limit bolt threadedly connected to said lock head pick, said position limit nut threadedly connected to said position limit bolt and within said lock head pick. In, a pick copper sleeve is provided at a point rotatably connected to the fixed shaft, pick adjustment gaskets are provided on both sides of the lock head pick, and the pick adjustment gaskets are mounted on the fixed shaft.

In the single-door concrete structure fire protection enclosure door described above, preferably said base comprises a base plate, a first bracket and a second bracket, wherein said first bracket, said second 2 brackets are attached to the base plate, the first bracket is provided parallel to the second bracket, the first bracket is provided with a first attachment hole for attaching the inscribed end, and the second bracket A second mounting hole for mounting the core shaft is provided in the base plate, a first circumscribed hole and a second circumscribed hole are provided in the base plate, a hook bolt and a bolt washer are provided in the first circumscribed hole, and the bolt washer is a spring washer, the hook bolt circumscribes the mounting support, and the second circumscribing hole circumscribes the isolation media fitting.

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

In the single-door concrete construction fire protection enclosure door described above, preferably said assembly end is provided with an internal thread for threaded engagement with an assembly bolt, and said assembly bolt and said second bracket are threaded together. A first washer and a second washer are provided therebetween, the first washer contacting the second bracket, the second washer contacting the first washer and the assembly bolt, respectively, and the second washer , is a spring washer.

In the single-door concrete structure fire protection enclosure door described above, preferably further comprising an adjustment mechanism, said adjustment mechanism mounted on said first bracket and abutting said inscribed end; Adjust the initial torque of the torsion spring.

In the single-door concrete structure fire protection enclosure door as described above, preferably, said adjusting mechanism comprises an adjusting shaft, a ratchet, an adjusting cover, a pawl and a compression spring, and said adjusting A shaft is mounted in the first mounting hole, rotatably connected to the first mounting hole, and in contact with the inscribed end, the ratchet is mounted on the adjustment shaft, and the adjustment cover is configured to: Mounted on the first bracket and positioned outside the ratchet, the pawl is mounted between the adjustment cover and the ratchet, and the compression spring is mounted between the ratchet and the pawl.

In the single-door concrete structure fire protection enclosure door as described above, preferably, said adjusting shaft includes a receiving end, a connecting portion and a flared end, said receiving end being polygonal. a log and a receiving tray, wherein the ratchet is attached to the polygonal log and abuts the receiving tray, and the connecting portion abuts the receiving end and is mounted in the first mounting hole. and is rotatably connected to the first mounting hole, the projecting end being in contact with the connecting portion and positioned within the core shaft.

In the single-door concrete structure fire protection enclosure door as described above, preferably, said adjustment cover comprises a cap plate and a cover body, said cover body is cylindrical, and said first 1 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, the light hole is the polygonal log Provides an overhang position for

In the single-door concrete structure fire protection enclosure door as described above, preferably the number of said hinges is two, two said hinges being along the vertical direction respectively the upper hinge and the a lower hinge, wherein the upper hinge comprises an upper hinge seat provided on one side of the door frame; and an upper hinge shaft; a connecting end of the upper hinge shaft is located outside the upper hinge seat and connected to the door plate; and the lower hinge is connected to the upper hinge seat. and a lower hinge shaft, wherein the rotating end of the lower hinge shaft is rotatably provided to the lower hinge seat via a second bearing, and the connecting end of the lower hinge shaft a lower hinge shaft positioned outside the lower hinge seat and connected to the door plate;

In the single door concrete structure fire protection enclosure door as described above, preferably said second bearing is an aligning roller bearing and said lower hinge is a thrust located below said second bearing. a thrust ball bearing, wherein the upper roller holder of the thrust ball bearing is in contact with the bottom end of the lower hinge shaft; a connecting shaft; an aligning ball head; A lower roller holder of the thrust ball bearing is in contact with the connecting shaft, the aligning ball head and the aligning support seat form a rolling friction pair, and The pivot seat further includes an articulation bearing mounted within the lower hinge seat.

The technical solutions provided in the embodiments of the present invention have the following beneficial effects.

The base is attached to the door plate, the handle is attached to the base, and the transmission mechanism is connected to the lock head assembly with one end connected to the handle and the other end connected to the lock head assembly attached to the door plate, whereby the lock head assembly is: It can be connected to the door plate to lock or unlock the door plate. The transmission mechanism has one end connected to the handle and the other end connected to the plurality of lock head assemblies, so that one handle can simultaneously control unlocking or locking of the plurality of lock head assemblies, and the lock Improves effectiveness, increases robustness and reliability when locked. The lock head assembly is provided with a return spring for automatic return, provided with a lock copper sleeve and a guide key to improve motion accuracy, and provided with an oil cup to provide a lock copper sleeve and wear of the lock head can be reduced. The length of the connecting rod of the transmission mechanism is adjustable, which can reduce the difficulty of assembly, and the number of connecting rods can be flexibly installed and locked according to actual needs. The number of head assemblies used can be selected to achieve the purpose of one handle driving multiple lock head assemblies. The lock head assembly and the transmission mechanism can be directly connected or indirectly connected, which makes the implementation options rich. This high-speed railway and subway tunnel single-door concrete structure fire protection closed door has excellent fire protection sealing performance.

FIG. 4 is a schematic diagram of mounting a locking device provided in an embodiment of the present invention; FIG. 2 is a cross-sectional view along AA in FIG. 1; FIG. 2 is a cross-sectional view along BB in FIG. 1; FIG. 2 is a cross-sectional view along CC in FIG. 1; FIG. 5 is a cross-sectional view along DD in FIG. 4; 1 is a structural schematic diagram of a single-door concrete structure fire protection closed door for high-speed rail and subway tunnels provided in an embodiment of the present invention; FIG. FIG. 7 is a cross-sectional view along EE in FIG. 6; 7 is an enlarged schematic diagram at I in FIG. 6. FIG. FIG. 7 is a cross-sectional view along FF in FIG. 6; 1 is a schematic front view of a door plate steel frame provided in an embodiment of the present invention; FIG. FIG. 11 is an enlarged schematic diagram at II in FIG. 10 ; FIG. 4 is a schematic front view of a door plate reinforcement provided in an embodiment of the present invention; FIG. 2 is a structural schematic diagram of a hinge (upper hinge and lower hinge) provided in an embodiment of the present invention; FIG. 14 is a structural schematic diagram in the G direction in FIG. 13; FIG. 14 is a cross-sectional view taken along line HH in FIG. 13; FIG. 2 is a structural schematic diagram of the automatic return device of the present invention; FIG. 3 is a structural schematic diagram of an automatic return device with a torsion spring cut; FIG. 17 is a plan view of FIG. 16; FIG. 19 is a structural schematic diagram of FIG. 18 with the cap plate removed;

The invention will now be described in detail on the basis of embodiments with reference to the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. Those skilled in the art will clearly appreciate that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, some features of one embodiment can be used in another embodiment to produce another embodiment. Thus, it is desired that the present invention include modifications and variations within the scope of the appended claims and their equivalents.

In describing the present invention, the terms "longitudinal", "horizontal", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal" , "top", "bottom", etc., are based on the orientations or relationships shown in the drawings, and require that the invention be configured and operated in a specific orientation. It should not be construed as a limitation to the present invention, as it is only intended to facilitate the explanation of the present invention. The terms "contact", "connect" and "provide" used in the present invention should be understood broadly and may be, for example, a fixed connection or a removable connection. , may be directly connected or indirectly connected via an intermediate member. A person skilled in the art can understand the specific meaning of the above terms according to the specific situation.

As shown in FIGS. 1-19, an embodiment of the present invention is a high-speed railway and subway tunnel including a door frame 8, a hinge, a door plate 5, a fireproof packing, an interlocking automatic lock, and an automatic return device. provides a single-door concrete structure fire protection enclosure door.

The door frame 8 is provided in a tunnel, for example, a tunnel entrance or tunnel of a high-speed railway or subway tunnel, and has an upper horizontal portion and a lower horizontal portion provided oppositely and a left vertical portion and a right vertical portion provided oppositely. and a vertical portion, wherein the upper horizontal portion, the left vertical portion, the lower horizontal portion, and the right vertical portion are sequentially connected head-to-tail to form a ring structure. In practical applications, the upper horizontal section, the left vertical section, and the right vertical section are generally all made of angle steel 80 . Specifically, the angle steel 80 includes a first blade 801 and a second blade 802, the two blades being perpendicular to each other and forming a 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 mouth, which has a lock box (or called a lock hole). The outer surface of the second vane 802 provided is the front side of the door frame. When a groove sloping section is provided between the threshold and the sloping ground, the lower horizontal section may be steel plate instead of angle steel, and the bottom of the door panel 5 is from the groove sloping section. It floats and the side of the bottom of the door plate 5 abuts the side of the lower horizontal part. The fireproof 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 on the bonding surface of the door frame 8 (for example, the outer surface of the second blade). It may well be the bonding surface of the door plate 5 . The fireproof packing includes a seal pad 82 and a fireproof inflatable seal strip 84 . The sealing pad 82 is provided on the front side of the door frame 8 , and both sides in the width direction of the pad are respectively provided with fireproof expansion sealing strips, for example, by gluing, and then fixedly connected by the fixing screw 83 . The fixing screw may be a flutingcoiled hairscrew, the width direction of the sealing pad 82 is perpendicular to the longitudinal direction of the sealing pad 82, and the longitudinal direction is the direction of the door frame 8. is consistent with The two sides of the seal pad 82 are the left side and the right side, 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 structure door plate, which is hingedly connected to the door frame 8 via hinges so that it rotates about a vertical axis on one side of the door frame 5 . When the fire protection closed door is closed, the door plate 5 is attached to the door frame 8, and the fire protection packing is sandwiched between them, so that the fire protection closed door is sealed. The interlocking automatic lock includes a base 4 , a handle 6 , a transmission mechanism 3 and a lock head assembly 1 . A base 4 and a lock head assembly 1 are attached to the door plate 5, a handle 6 is attached to the base 4, and a transmission mechanism 3 is connected to the handle 6 and the lock head 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 . A core shaft 908 is attached to the pedestal and can support the attachment of the torsion spring 903, and limits the deformation of the torsion spring 903 during use to prevent the torsion spring 903 from radially deforming. The torsion spring 903 is provided on the outer side of the core shaft 908 , one end is an inner contact end 922 and is connected to the pedestal, and the other end is an outer contact end 909 and is circumscribed to the door plate 5 . For example, the top surface of the door plate is provided with a mounting tube 926 for mounting the circumscribing end. The material of the attachment pipe may be copper. When the door plate 5 receives an external force and rotates, the torsion spring 903 receives torque and elastically deforms. There is an effect of automatic return of 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 is connected to the handle 6 at one end and attached to the door plate 5 at the other end. By being connected to the head assembly 1 , the lock head assembly 1 can be connected to the lock on the door frame to lock or unlock the door panel 5 . One end of the transmission mechanism 3 is connected to a handle 6, and the other end is connected to a plurality of lock head assemblies 1, so that one handle 6 simultaneously controls unlocking or locking of a plurality of lock head assemblies 1. can be realized, the locking effect is improved, and the robustness and reliability when 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 each a door plate. 5, preferably 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, i.e. the second Both the first mounting plate 401 and the second mounting plate 402 are mounted inside the door plate 5 . The axial sleeve 403 is mounted in the door plate 5 and passes through the first mounting plate 401 at one end and is fixedly connected to the first mounting plate 401, e.g. It passes through two mounting plates 402 and is fixedly connected to the second mounting plate 402, for example welded or interference fit. By combining the first mounting plate 401 , the second mounting plate 402 and the shaft sleeve 403 together, it is possible to provide mounting and turning space for the rotational movement of the handle 6 .

The handle 6 is mounted within the base 4 , specifically mounted within the axle sleeve 403 , and achieves a pivotable connection with the axle sleeve 403 . The handle 6 includes a first outer hand 601, a second outer handle 602, and an inner handle 603. The first outer handle 601 and the second outer handle 602 are connected to the inner handle 603, respectively. 603 is mounted within the shaft sleeve 403 of the base 4 and is rotatably connected with the shaft sleeve 403 . In the rotatable connection scheme, preferably, the inner handle 603 is rotatably connected to the shaft sleeve 403 through the bearing 604 , that is, the bearing 604 is installed so that the inner handle 603 and the shaft sleeve 403 are connected together. The inner handle 603 is mounted with one bearing 604 at each end, and through two bearings 604, the inner handle 603 is mounted with a bearing 604 on each end to balance the load on both ends when the handle 6 is rotated. It is 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 being generally U-shaped and when attached to the base 4, the door plate It becomes easy to operate from both inside and outside of 5. To facilitate the attachment of the handle 6 to the base 4, the connection between the first outer handle 601, the second outer handle 602 and the inner handle 603 is achieved by locking and fastening. Specifically, the inner handle 603 is provided with a polygonal end, which is inserted into the first outer handle 601 and connected to the first outer handle 601 in a locking manner. , can be realized to rotate synchronously with the first outer handle 601 . The first outer handle 601 is provided with a set screw 607 which is threadedly connected to the polygonal end to allow the inner handle 603 to be positioned between the first outer handle 601 and the inner handle 603 . can guarantee the robustness of the connection in the axial direction. Preferably, the polygonal end is a regular polygon, which is easy to process, and the polygonal end is tapered along the axial direction to facilitate insertion into the first outer handle 601 . becomes easier.

In practice, the inner handle 603 is connected to the first outer handle 601 through a polygonal end, and the second outer handle 602 is integral with the inner handle 603 to reduce the amount of assembly work. This eliminates the assembly step between the second outer handle 602 and the inner handle 603 and reduces the total number of parts of the present invention. Specifically, during installation, a bearing re-snap ring 605 is mounted between a bearing 604 adjacent the second outer handle 602 and the second outer handle 602, the bearing re-snap ring 605 having one end attached to the second outer handle. 602, and the other end is abutted on a bearing 604. A bearing snap ring 605 and a snap ring nut 606 are provided between the polygonal end and the bearing 604, and the bearing snap ring 605 is attached to one end. abuts a bearing 604 and the other end abuts a resnapping ring nut 606 , which is threadedly connected to the inner handle 603 and can perform a fixing function with respect 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. can provide a mounting position for the lock head 102 and the return spring 103, and the lock head 102 can be mounted in the lock base 101 and slidably mated with the lock base 101 to achieve locking and unlocking and return. The spring 103 is mounted inside the lock base 101, one end is connected to the lock base 101 and the other end is connected to the lock head 102, and the return spring 103 is always in a compressed state inside the lock base 101. , can provide a return force to the lock head 102 (return here means that the return spring 103 can force the lock head 102 into the locked state under the action of 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 can be 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 is thicker than the thickness of the lock gasket 104, and can be N times the thickness of the lock gasket 104. where N is a positive number greater than or equal to 1, such as 2, 3, 4, 5, 6, 7; A lock gasket 104 allows for fine adjustment of the mounting position of the lock head 102 .

In order to facilitate the smooth operation of the lock head assembly 1, a lock copper sleeve 105 is provided inside the lock base 101 where it slides with the lock head 102, and the lock copper sleeve 105 is tightened. Mounted inside the lock base 101 with a fit and sliding mating with the lock head 102, the precision with which the lock head 102 translates can be improved. One end that mates with the lock hole in the lock head 102 is a wedge-shaped end so that the lock head 102 can easily move in and out of the lock box (or lock hole). In order to ensure the translation accuracy of the lock head 102 and prevent the lock head 102 from twisting when it translates, the present invention provides a guide key 106 on the lock head 102 , the guide key 106 tightens the lock head 102 . It provides a sliding guide for the lock head 102 by mating connection and sliding engagement with the lock base 101 . As a maintenance structure of the lock head assembly 1, the lock base 101 is provided with an oil cup so that 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) 105) and the lock head 102 are always maintained with oil or grease lubrication to reduce wear of the lock copper sleeve 105 and the lock head 102.

Further, the transmission mechanism 3 includes a rotating arm plate 301 attached to the handle 6 and a connecting rod connected to the rotating arm plate 301, the rotating arm plate 301 having a first aperture and a second aperture. , the handle 6 is passed through the first aperture and is interference fit in the first aperture, the connecting rod is rotatably connected to the second aperture at one end and the locking head at the other end. directly or indirectly connected to the assembly 1; In use, the handle 6 drives the rotating arm plate 301 to rotate, the rotating arm plate 301 drives the movement of the connecting rod, further drives the lock head 102 away from the lock hole, and the first outer handle 601 and/or when the second outer handle 602 is not directly subjected to force, the return spring 103 drives the lock head 102 to return, and further drives the handle 6 to return by means of 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 is threadedly connected to the movable rod head 303 and movable with the rod body 302. By adjusting the length of the threaded connection with the rod head 303, the length of the connecting rod can be fine-tuned, eliminating assembly problems due to assembly and/or manufacturing errors, and reducing assembly difficulty. be able to. In addition, in order to keep the length of the connecting rod unchanged after assembly, the present invention specifies the length of the connecting rod by double nut fastening, 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 abuts against the movable rod head 303 to form a double nut fastening structure together with the movable rod head 303 . In practice, one connecting rod may be provided with one movable rod head 303 or may be provided with two movable rod heads 303 . Preferably, one connecting rod is provided with one movable rod head 303, and the rod body 302 is threadedly connected to the movable rod head 303 at one end and provided with a fixed rod head at the other end to reduce the amount of assembly work. can be reduced. A movable rod head 303 or a fixed rod head is hinged to the second aperture.

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

Preferably, the number of connecting rods is an even number of 2 or more, half of the connecting rods are positioned above the handle 6, and the other half of the connecting rods are positioned below the handle 6, The connecting rod located above and the connecting rod located below the handle 6 are symmetrically distributed around the first opening, so that the force received when the door plate 5 is locked can be balanced.

Furthermore, the lock head assembly 1 and the transmission mechanism 3 may be in direct contact or indirect contact. In the case of direct contact, the handle 6 drives the operation of the transmission mechanism 3, and the transmission mechanism 3 drives the operation of the lock head 102. In the case of indirect contact, the handle 6 drives the operation of the transmission mechanism 3. By driving , the transmission mechanism 3 drives the movement of the lock head 102 through the medium.

As an embodiment in which the lock head assembly 1 and the transmission mechanism 3 are in direct contact, the lock head assembly 1 is hinged to the transmission mechanism 3 . In an embodiment, the rotating arm plate 301 is attached to the second outer handle 602 and is lockingly engaged with the second outer handle 602 so as to rotate synchronously along the axial direction of the inner handle 603 as the handle 6 rotates. to rotate. The connecting rod has one end hinged to the rotating arm plate 301 and the other end hinged to the lock head 102 . In use, the handle 6 drives the rotation of the rotating arm plate 301, which drives the movement of the connecting rod and also the translation of the locking head 102 to where the connecting rod is located.

The lock head assembly 1 and the transmission mechanism 3 are indirect contact. The pick assembly 2 includes a fixed shaft 203, a lock head pick 201, a pick re-snap ring 207, a fastening nut 205, and a nut cotter 206. By mounting the fixed shaft 203 on the door plate 5, the mounting position is A lock head pick 201 is rotatably connected to the fixed shaft 203 , one end is hinged to the transmission mechanism 3 , and the other end is attached to the lock head 102 of the lock head assembly 1 . The lock head 102 can be picked to translate the lock head 102 by means of a pick re-snap ring 207 attached to the fixed shaft 203 and connected to the lock head pick 201 and extending in the axial direction of the fixed shaft 203. The lock head pick 201 can be position-limited, and the fastening nut 205 is mounted on the fixed shaft 203, threadedly connected to the fixed shaft 203, and connected to the pick-rep snap ring 207 so that the pick-rep snap ring 207 is position-limited. and the fastening nut 205 can be locked by attaching the nut cotter 206 to the fastening nut 205 .

Preferably, the lock head pick 201 is further provided with a position limiting device, which abuts against the lock head assembly 1 during operation to prevent reduction 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 being threadedly connected to the lock head pick 201, and the position-limiting nut being threadedly connected to the position-limiting bolt. You can lock the bolt. By adjusting the length of projection of the position limit bolt on the lock head pick 201 when installed, the maximum distance of translation when the lock head 102 operates can be adjusted, and the maximum compression when the return spring 103 is used can be adjusted. Amount can be adjusted.

A pick copper sleeve 202 is provided in the lock head pick 201 where it is rotatably connected to the fixed shaft 203 in order to improve the motion accuracy of the lock head pick 201 and reduce wear. In order to facilitate adjustment of the length of the lock head pick 201 from the inner surface of the door plate 5 , in the present invention, the lock head pick 201 is provided with pick adjustment gaskets 204 on both sides, and the pick adjustment gaskets 204 are attached to the fixed shaft 203 . By being attached, 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, making the operation smooth and labor saving. can.

In addition, in the hinge connection of the present invention, the movable rod head 303 and the rotating arm plate 301, the lock head pick 201 and the fixed rod head, and the lock head 102 and the fixed rod head all share a pin shaft when they are connected by hinges. , and then locked to the pin shaft by a cotter, thus realizing a hinge 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 connecting two longitudinal groove steels and two transverse groove steels, the groove bottom of each groove steel is the door plate frame 51 It is the inside surface. The door plate reinforcement frame 52 is connected to the inner surface of the door plate frame 51 and positioned within the space formed by the door plate frame 51 . Concrete is placed in the space formed by the door plate frame 51 and the door plate reinforcement frame 52 . The door plate reinforcement frame 52 includes horizontal main reinforcements 521, vertical main reinforcements 522, and binding reinforcements 523. connected in the form of A plurality of grid structures can be provided in the width direction of the door plate 5 . Along the width direction of the door plate 5 , the crossings formed by the two opposing longitudinal main reinforcements 522 and horizontal main reinforcements 521 are connected via tying muscles 523 . In order to reinforce the connection strength of the door plate reinforcement frame 52, two ends of the tying bars 523 are both semicircular hooks, and one end of the horizontal main bar 521 and the vertical main bar 522 are both hooked. is also the bar end of the brazed hook. Before pouring concrete, the outer surface of the door plate 5 is used as a bottom mold, and then steel bars are welded or bound to form the door plate reinforcing frame 52 . After the door plate 5 is formed, the exposed metal surfaces (the surface of the door plate frame and the surface of the door plate reinforcing frame) should be coated with two coats of anticorrosive paint, such as red lead anticorrosive paint. A fire coating 50 should be applied to the tunnel-facing inner surface of the door plate, for example, a fire coating, which may be a non-expanding concrete member fire coating. For ease of fabrication, the hinge shafts described below are welded to the door frame 51 before placing the concrete.

In order to stably rotate and support the door plate 5, the number of hinges is two, and the two hinges are an upper hinge 71 and a 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, forming a cavity with two-end openings, the two openings being an upper opening and a lower opening, respectively, an end cap 714 covering the upper opening, The top opening can be provided by bolts and gaskets. The rotating end of the upper hinge shaft 712 is rotatably provided in the cavity of the upper hinge seat 711 via the first bearing 713, and the free end of the upper hinge shaft 712 rotates to the 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 . The upper hinge 71 further includes a positioning tube 717 to stably fix the first bearing 713 . An annular protrusion 718 is provided on the inner wall of the cavity of the upper hinge seat 711 to contact the lower end surface of the bearing outer ring of the first bearing 713 , and the lower end surface of the positioning tube 717 contacts the upper end surface of the bearing outer ring of the first bearing 713 . The upper surface of the positioning tube 717 abuts the lower surface of the end cap 714 . The first bearing 713 may be an alignment 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 and form a cavity with an opening at the upper end. The rotating end of the lower hinge shaft 722 is pivotally 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 rotates the 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 . 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 attached to the outside of the lower hinge shaft 722 through a through-hole formed thereon. .

Lower hinge 72 further includes a thrust ball bearing 725 and an articulation bearing 726 . The thrust ball bearing 725 is for alignment and support and is located below the second bearing 723, and the upper roller holder 7251 of the thrust ball bearing 725 is attached to the bottom end of the lower hinge shaft 722. be. Articulation bearing 726 is located below thrust ball bearing 725 and is for alignment and support. The articulation bearing 726 includes a connecting shaft 7261 , a centering ball head 7262 and a centering bearing 7263 . The connecting shaft 7261 has a stepped shape, and the upper end of the connecting shaft 7261 is in contact with the lower roller holder 7252 of the thrust ball bearing 725, and the step surface of the connecting shaft 7261 is in contact with the lower end surface of the lower roller holder 7252. . The aligning ball head 7262 is provided on the bottom surface of the connecting shaft 7261, and forms a rolling friction pair with the aligning support 7263, so that the center lines of the upper and lower hinge shafts are on the same straight line when in use, and the door is closed. Parallel to the center line of the plate is guaranteed to be parallel to the center line of the door frame. To provide a more stable support, the lower hinge 72 further includes a load receiving support 727 provided below the lower hinge seat 721 and abutting the bottom end of the lower hinge seat 721 .

The hinge further includes a shaft sleeve 720 to further improve the matching of the upper and lower hinges when rotating. 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 axle sleeve 720 is bolted to the door plate 5 by a first connecting plate 7200 and welded to the door plate 5 by a second connecting plate 7201 . The first connecting plate 7200 is closer to the middle of the shaft sleeve 730 than the second connecting plate 7201 . At the time of installation, the shaft sleeve 730 is first fixedly connected to the door plate 5 by bolts and then welded to make it easier to maintain mounting accuracy when connected to the door plate 5. - 特許庁

Upper hinge 71 includes a first inner plate 716 and an upper hinge seat 715 . The front surface of the first inner plate 716 is horizontally 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 base 715 in this order. The front surface of the upper hinge seat 715 is connected to the upper hinge seat 711, the thickness of the upper hinge seat 715 is equal to the thickness of the angle steel forming the door frame 8, and the upper hinge seat 715 is then connected to the door frame 8. It is aligned with Lower hinge 72 includes a second inner plate and lower hinge seat 728 . The front surface of the second inner plate is horizontally 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 seat 728 in order. The front surface of the lower hinge seat 728 is connected to the lower hinge seat 721, the thickness of the lower hinge seat 728 is equal to the thickness of the angle iron forming the door frame 8, and the lower hinge seat 728 is then connected to the door frame 8. In this way, the connection strength between the upper hinge 71 and the lower hinge 72 and the concrete around the door frame 8 can be improved, and the door plate main body can be stably supported. The connection method may be a bolt connection.

The right end of the upper hinge seat 715 is lifted from the upper hinge seat 711 with respect to the first inner plate 716, and the right end of the lower hinge seat 728 is lifted from the lower hinge seat 721 with respect to the second inner plate. During application, the upper hinge seat 715 and the lower hinge seat 728 are brought into contact with the concrete wall to improve the stability of the connection. Between the upper hinge seat 715 and the upper hinge seat 711, and between the lower hinge seat 728 and the lower hinge seat 721, the center lines of the upper and lower hinge shafts are aligned with the center line of the door body of the door plate. An alignment gasket 729 may be provided for alignment to lie flat.

Since the door plate is a concrete structure, in order to support the door plate more stably when the door plate is open for a long time, the present fire protection enclosed door is equipped with a jack 930, a jack support 931, further includes The jack 930 is provided on the door plate 5 by a jack bottom plate 932, and the overhanging end of the jack extends downward. The jack support seat is provided below the jack when the door plate is open. When the door plate 5 is in the open position, the jack 930 operates and its overhanging end projects downward into the jack seat 931 to provide support to the door plate 5 .

In the present invention, the base of the automatic return device includes a base plate 901 , a first bracket 902 and a second bracket 904 . The first bracket 902, the second bracket 904 are attached to the base plate 901, and the base plate 901, the first bracket 902, the second bracket 904 may be of unitary construction and are united by a process such as full 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 a second mounting hole to which the core shaft 908 can be mounted. The inscribed end 922 of the torsion spring 903 is connected to the first mounting hole, and the circumscribed end 909 is connected to the door plate 5 so that restoring force can be accumulated when the door plate 5 is rotated.

Furthermore, in the present invention, the base plate 901 is provided with the first circumscribing hole and the second circumscribing hole 911 . A hook bolt 912 and a bolt washer are provided within the first circumscribing hole, the hook bolt 912 circumscribing the mounting support to secure the base to the mounting support, the bolt washer connecting the hook bolt 912 and the bolt washer. The hook bolt 912 can be prevented from loosening by being positioned between the base plates 901 and being a spring washer as the bolt washer. The second circumscribing hole 911 circumscribes the isolation medium fixture 924, thereby improving the mounting accuracy of the automatic return device and further extending the service life of the present invention.

Further, in the present invention, the core shaft 908 includes a core shaft 908 body, a free end and an assembly end, the core shaft 908 body can support the torsion spring 903, and the free end and the assembly end are: Located on both sides of the body of the core shaft 908 respectively, the assembly ends are installed in the second mounting holes and fixedly connected to the second mounting holes.

Preferably, the assembly end is provided with an internal thread, and the internal thread is connected to the assembly bolt 907, that is, the core shaft 908 is attached to the second bracket 904 by bolting and fixed to the second bracket 904. 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 an inner diameter corresponding to the second mounting hole. , and the outer diameter is greater than the diameter of the second mounting hole, the assembly bolt 907 can secure the core shaft 908 to the second bracket 904, and the second washer 906 is , the first washer 905 and the assembly bolt 907, and the second washer 906 is a spring washer to provide a preload force to the installation of the core shaft 908 and prevent the core shaft 908 from loosening after installation. be able to.

In addition, the present invention further includes an adjusting mechanism, which is attached to the first bracket 902 and contacts the inscribed end to adjust the initial torque of the torsion spring 903, thereby providing an automatic return device. Not only can the door plate 5 be easily rotated after application, but also automatic return is possible.

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 being mounted in the first mounting hole and the first mounting hole. A ratchet 914 is attached to the adjusting shaft 915 , the adjusting cover is attached to the first bracket 902 , is positioned outside the ratchet 914 , and is in contact with the inscribed end 922 . is mounted between the adjustment cover and ratchet 914 , pawl 917 is positioned behind ratchet 914 in the return direction of torsion spring 903 , and compression spring 925 is mounted between ratchet 914 and pawl 917 . When adjusting the initial torque, the adjustment of the initial torque of the compression spring 925 can be achieved by twisting the adjustment shaft. In use, the pawl 917 is located behind the ratchet 914 in the mounting direction, so that the initial torque only increases, not decreases, due to the unidirectional pivoting characteristics of the ratchet 914, and the torsion spring 903 can be corrected to some extent.

Further, according to the present invention, the adjustment shaft 915 includes a receiving end, a connecting portion 921 and a flared end 923 . The receiving ends include a polygonal log 918 and a receiving tray 920 , preferably the polygonal log 918 is a regular polygon, and the ratchet 914 is attached to the polygonal log 918 and to the receiving tray 920 . By abutting, it is possible to rotate in synchronization with the adjustment shaft 915 . The linking portion 921 abuts the receiving end, is mounted in the first mounting hole, is pivotally connected to the first mounting hole, and preferably has a clearance fit of H8/f7. The protruding end 923 is in contact with the connecting portion 921 and positioned within the core shaft 908, and does not come into contact with the core shaft 908, thereby reducing the volume of the automatic return device.

Further, in the present invention, the adjustment cover includes a cap plate 916 and a cover body 919, the cover body 919 is cylindrical, a plurality of screw holes are evenly distributed on the top surface, and the cover body 919 is , is mounted above the first bracket 902 and is fixedly connected, eg, welded, to the first bracket 902 . 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 are provided in one-to-one correspondence with the screw holes. Fastening is realized by screws 913 of . In use, the cap plate 916 can press against the ratchet 914, thereby locking the ratchet 914, and the light hole can provide the polygonal log 918 with an overhang position, thereby applying torque. Easier to operate when adjusting.

Preferably, the pawl 917 is cylindrical, and the height of the pawl 917 is less than the thickness of the ratchet 914 to reduce resistance when adjusting torque and to allow the cap plate 916 to press the pawl 917. It is possible to avoid uncertainties caused by

A door plate of concrete construction is relatively heavy, and in order to facilitate automatic return of the door plate, the present fire protection enclosure door further includes a door closer 900 . The door closer 900 has one end attached to the upper horizontal portion of the door frame 8 and the other end connected to the top surface of the door plate. One end of the door closer is further from the axis of rotation of the door plate than the automatic return device.

The process of installing and adjusting the automatic return device is described below. A process of installing and adjusting an automatic return device, comprising:
a first step of fully assembling the automatic return device;
The pedestal is attached to the mounting support and isolation medium fixture 924 , the circumscribing end 909 is mounted on the door plate 5 , and the connection point between the circumscribing end 909 and the door plate 5 and the axis of the torsion spring 903 are connected to the door plate 5 . a second step of ensuring 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 complete the adjustment. and a third step of fixing the screw 913 after finishing the installation and debugging of the auto-recovery device.

As can be seen from common general knowledge, the present invention can be implemented by other implementations without departing from its spirit or essential features. Accordingly, the embodiments disclosed above are illustrative only, and not exclusive, in their respective aspects. All changes which come within the scope of the invention or which come within the equivalence of the scope of the invention are included in the invention.

1 lock head assembly 101 lock base 102 lock head 103 return spring 104 lock gasket 105 lock copper sleeve 106 guide key 2 pick assembly 201 lock head pick 202 pick copper sleeve 203 fixed shaft 204 pick adjustment gasket 205 fastening nut 206 nut cotter 207 pick re-napping ring 3 transmission mechanism 301 rotating arm plate 302 rod body 303 movable rod head 4 base seat 401 first mounting plate 402 second 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 longitudinal main reinforcement 523 binding muscle 6 handle 601 first outer handle 602 second outer handle 603 inner handle 604 bearing 605 bearing snap ring 606 snap ring nut 607 positioning screw 71 upper hinge 711 upper hinge seat 712 upper hinge shaft 713 second 1 Bearing 714 End Cap 715 Upper Hinge Base 716 First Inner Plate 717 Positioning Tube 718 Annular Protrusion 720 Shaft Sleeve 7200 First Connection Plate 7201 Second Connection 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 holder 7252 Lower roller holder 726 Joint bearing 7261 Connection shaft 7262 Alignment ball head 7263 Alignment support seat 727 Load receiving support seat 728 Lower hinge seat 729 Adjustment gasket 8 Door frame 80 Angle steel 801 No. 1 blade 802 2nd blade 82 seal pad 83 fixing screw 84 fire expansion seal strip 90 automatic return device 901 base plate 902 1st bracket 903 torsion spring 904 2nd bracket 905 1st washer 906 2nd washer 907 assembly bolt 908 core Shaft 909 Circumscribed end 911 Second circumscribed hole 912 Hook bolt 913 Screw 914 Ratchet 915 Adjusting shaft 916 Cap plate 917 Claw 918 Polygonal log 919 Cover body 920 Receiving tray 921 Linking part 922 Inscribed end 923 Overhanging end 924 Separation medium fixture 925 Compression spring 926 Mounting pipe 900 Door closer 9 30 jack 931 jack support seat 932 jack bottom plate

Claims (9)

A single-door concrete structure fire protection enclosure door for high-speed rail tunnels or subway tunnels, said single-door concrete structure fire protection enclosure door comprising a door frame, a hinge, a door plate, and a fire protection packing. , an interlocking automatic lock and an automatic return device,
The door frame is provided in the tunnel,
The hinge is located on one side of the door frame,
wherein the door plate is a concrete structure door plate, the door plate is hingedly connected to the door frame via the hinge so as to rotate relative to the door frame;
The fireproof packing is provided on a 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, wherein the base and the lock head assembly are attached to the door plate, and the handle is attached to the base. mounted, the transmission mechanism being connected to each of the handle and the lock head assembly;
The automatic return device includes a pedestal, a core shaft, and a torsion spring. The pedestal is provided above the hinge so as to support the core shaft and the torsion spring. The torsion spring is fitted to 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 a circumscribed end. and connected to the top surface of the door plate,
The pedestal includes a pedestal plate, a first bracket, and a second bracket,
The first bracket and the second bracket are attached to the base plate, the first bracket is provided parallel to the second bracket, and the first bracket has a first attachment hole for attaching the inscribed end. a second attachment hole for attaching the core shaft to the second bracket,
The base plate is provided with a first circumscribed hole and a second circumscribed hole,
A hook bolt and a bolt washer are provided within the first circumscribing hole, the bolt washer being a spring washer, the hook bolt circumscribing the mounting support, and the second circumscribing hole being the isolation media fitting. Circumscribe,
the core includes a core body, a free end, and an assembly end,
The core body is used to support the torsion spring, the free end and the assembly end are located on both sides of the core body, and the assembly end is mounted in the second mounting hole. be
The assembly end is provided with an internal thread for screwing with the assembly bolt, and a first washer and a second washer are provided between the assembly bolt and the second bracket, the first washer being the second bracket. contacting a bracket, said second washer contacting each of said first washer and said assembly bolt, said second washer being a spring washer;
further comprising an adjustment mechanism, said adjustment mechanism attached to said first bracket and in contact with said inscribed end for adjusting an initial torque of said torsion spring;
the adjustment mechanism includes an adjustment shaft, a ratchet, an adjustment cover, a pawl, and a compression spring;
The adjustment shaft is mounted in the first mounting hole, is rotatably connected to the first mounting hole, and is in contact with the inscribed end, and the ratchet is mounted on the adjustment shaft and the adjustment cover. is attached to the first bracket and positioned outside the ratchet, the pawl is attached between the adjustment cover and the ratchet, and the compression spring is attached between the ratchet and the pawl. to be
A single-door concrete structure fire protection closed door for high-speed rail tunnels or subway tunnels characterized by: 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 is slidably mated with the lock base, the return spring is mounted in the lock base, one end of which is connected to the lock connected to a base and having the other end connected to said locking head;
A lock gasket for adjusting the mounting position of the lock base is provided between the lock base and the door plate,
a lock copper sleeve is provided inside the lock base where it slides with the lock head;
one end of the lock head is a wedge-shaped end inserted into a lock hole provided in the door frame;
the lock head is provided with a guide key slidably mated with the lock base to provide a slide guide for the lock head;
The single-door concrete structure fire protection enclosure door according to claim 1, characterized in that: the transmission mechanism includes a rotating arm plate attached to the handle and a connecting rod connected to the rotating arm plate;
The rotating arm plate includes a first aperture and a second aperture, the handle is inserted through the first aperture, and the connecting rod has one end pivoted to the second aperture. operably connected, the other end directly or indirectly connected to the lock head assembly, the connecting rod being one or more in one-to-one correspondence with the lock head assembly;
The single-door concrete structure fire protection enclosure door according to claim 1, characterized in that: The number of the connecting rods is an even number of 2 or more, half of the connecting rods are positioned above the handle, and the other half of the connecting rods are positioned below the handle, the connecting rod located above and the connecting rod located below the handle are symmetrically distributed about the first aperture;
The single-door concrete structure fire protection enclosure 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 to the movable rod head, 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 the other end of the rod body is provided with a fixed rod head,
the movable rod head or the fixed rod head is hinged to the second aperture;
the lock head assembly is hinged to the transmission mechanism;
The single-door concrete structure fire protection enclosure door according to claim 3, characterized in that: further comprising a pick assembly through which the transmission mechanism is connected to the lock head assembly;
the pick assembly includes a fixed shaft, a lock head pick, a pick re-snap ring, a fastening nut, and a nut cotter;
The fixed shaft is mounted on the door plate to provide a mounting position, and the lock head pick is pivotally connected to the fixed shaft and hingedly connected to the transmission mechanism at one end, and at the other end to the The pick snap ring is mounted on the fixed shaft and connected to the lock head pick, and the fastening nut is mounted on the fixed shaft and connected to the pick snap ring. , the nut cotter is attached to the fastening nut;
The lock head pick is further provided with a position limit device that abuts the lock head assembly during operation, the position limit device includes a position limit bolt and a position limit nut, wherein the position limit bolt is , the lock head pick is threadedly connected, the position limit nut is threadedly connected to the position limit bolt,
a pick copper sleeve is provided in the lock head pick at a location rotatably connected to the fixed shaft;
pick adjustment gaskets are provided on both sides of the lock head pick, and the pick adjustment gaskets are attached to the fixed shaft;
A single-door concrete structure fire protection enclosure door according to any one of claims 1 to 5, characterized in that: the adjustment shaft includes a receiving end, a connecting portion, and an overhanging end;
The receiving end includes a polygonal log and a receiving tray, the ratchet is fitted in the polygonal log and abuts the receiving tray, the linking portion abuts the receiving end, and the mounted in a first mounting hole and rotatably connected to the first mounting hole, the protruding end being in contact with the connecting portion and positioned within the core shaft;
The adjustment cover includes a cap plate and a cover body,
The cover body is cylindrical and mounted above the first bracket, the cap plate is mounted on the cover body, the cap plate is provided with a light hole, and the cap plate receives the ratchet. pressing, the light hole providing an overhang position for the polygonal log;
The single-door concrete structure fire protection enclosure door according to claim 1, characterized in that: the number of said hinges is two, two said hinges being an upper hinge and a lower hinge respectively along the vertical direction;
The upper hinge is
an upper hinge seat provided on one side of the door frame;
An upper hinge shaft, wherein a rotating end of the upper hinge shaft is rotatably provided to the upper hinge seat via a first bearing, and a connecting end of the upper hinge shaft is positioned outside the upper hinge seat. and an upper hinge shaft connected to the door plate,
The lower hinge is
a lower hinge seat positioned below the upper hinge seat;
A lower hinge shaft, wherein a rotating end of the lower hinge shaft is rotatably provided to the lower hinge seat via a second bearing, and a connecting end of the lower hinge shaft is positioned outside the lower hinge seat. and a lower hinge shaft connected to the door plate,
The single-door concrete structure fire protection enclosure door according to claim 1, characterized in that: The second bearing is an alignment roller bearing,
The lower hinge is
a thrust ball bearing located below the second bearing, wherein the upper roller holder of the thrust ball bearing is fitted to the bottom end of the lower hinge shaft;
A joint bearing having a connecting shaft, an aligning ball head, and an aligning support, wherein a lower roller holder of the thrust ball bearing is fitted onto the connecting shaft, and the aligning ball head and the aligning support are provided. forming a rolling friction pair with a support, the alignment support further comprising: an articulation bearing provided within the lower hinge seat;
The single-door concrete structure fire protection enclosure door according to claim 8, characterized in that:

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