Novel fireproof anti-explosion wind-pressure-resistant sliding door

Abstract

The utility model provides a novel fireproof antiknock wind pressure resistant sliding door which comprises a door frame metal plate, a fireproof door leaf, a door closing self-locking assembly, automatic bolt mechanisms and a hydraulic mechanism, the door closing self-locking assembly is arranged at the position, corresponding to a self-locking plug, of a side support of the door frame metal plate, and the automatic bolt mechanisms are arranged at the upper position and the lower position in the fireproof door leaf. When the door leaf of the fireproof door is closed, the door closing armature is inserted along the middle of the pair of anti-falling roller columns until the pair of anti-falling roller columns are buckled in the concave part of the rhombic part at the outer end of the self-locking plug, and the fork type hinging arm is dragged by the sliding sleeve through the connecting rod, so that the pair of anti-falling roller columns are kept in a clamping state for the self-locking plug; the tooth end of the bottom end of the anti-disengagement tooth is clamped with the tooth groove of the anti-disengagement ratchet wheel in a matched mode, so that the position of the fork type hinge arm is limited, namely the clamping state of the pair of anti-disengagement roller columns to the self-locking plug is kept, the self-locking plug is prevented from being disengaged from the pair of anti-disengagement roller columns, and the self-locking effect on the fireproof door leaf is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a novel fireproof, explosion-proof and wind-pressure resistant sliding door. Background Technology

[0002] Fire doors are essential safety features in industrial and civil buildings, used to prevent the spread of fire and facilitate the evacuation of personnel. With rapid urbanization and the increase in high-rise buildings, the frequency of fire accidents is constantly rising, leading to a growing demand for fire doors. Fire doors can stop the spread of fire in the event of a fire, buying valuable time for evacuation and fire rescue, thereby reducing casualties and property damage.

[0003] In the event of a tunnel fire or other emergency, wind-pressure resistant fire doors can remain open or closed to ensure unobstructed evacuation and rescue routes, thereby protecting personnel safety. For example, application number CN201320750796.3 discloses a pressure-reducing fire door for subway tunnels, consisting of a door frame, a swing door leaf, a spine-type flow-guiding sealing plate around the inner frame, a sliding door panel inside the door leaf, and its supporting sliding return mechanism. The structure adopts a swing door opening method. Due to the special environment of the tunnel, air pressure differences can easily occur on both sides of the fire door, making it difficult to open or causing damage to the fire door due to impact when opened quickly. For example, application number CN202111247778.9 discloses a sliding door for urban railways with hook lock limit, which can realize bidirectional sliding of the fireproof and explosion-proof door. The fireproof and explosion-proof door is equipped with a lock head, and the corresponding door frame is equipped with a lock groove. The door lock formed by the lock head and the lock groove can resist the wind pressure acting on the front and back of the fireproof and explosion-proof door in the tunnel after locking. However, there is still room for improvement in wind pressure resistance and the convenience of opening and closing control of the fireproof door. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a novel fireproof, explosion-proof, and wind-pressure-resistant sliding door, which more accurately solves the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a novel fireproof, explosion-proof, and wind-pressure-resistant sliding door, comprising a door frame sheet metal, a fireproof door leaf, a self-locking assembly, an automatic latching mechanism, and a hydraulic mechanism. The top front of the door frame sheet metal is provided with a horizontally positioned main guide rail. The top of the fireproof door leaf is provided with several upper hanging wheels, which are slidably connected to the main guide rail. A horizontally positioned secondary guide rail is provided at the bottom of the fireproof door leaf, and a downward groove is formed at the bottom of the fireproof door leaf, in which the secondary guide rail engages. A lock is provided on one side of the fireproof door leaf. Handles are provided on both sides of the fire door. A self-locking plug is located on one side of the fire door leaf. A closing self-locking component is provided on the side support of the door frame sheet metal, corresponding to the position of the self-locking plug. The closing self-locking component includes a self-locking component base box integrally formed with the side support of the door frame sheet metal. A pair of fork-type hinge arms are hinged inside the self-locking component base box. A pair of anti-detachment rollers are connected to one end of each fork-type hinge arm near the self-locking plug. The other end of each fork-type hinge arm is hinged to a sliding sleeve via a connecting rod. The sliding sleeve slides on a sliding rod, which is horizontally fixed in the self-locking component base box. An anti-detachment device is provided between the end of the sliding rod and the sliding sleeve. The fire door leaf is equipped with an automatic latching mechanism at both the top and bottom. This mechanism includes a horizontally positioned cam housing and a vertically positioned latch housing. A top head is slidably inserted into the outer end of the cam housing, and a traction block is located at the inner end of the top head. A lever arm is hinged to the middle of the cam housing, with one end of the lever arm connected to the traction block via a pin. A top member is located at the bottom of the inner cavity of the latch housing, and the other end of the lever arm abuts against the bottom of the top member. A vertically positioned latch is slidably inserted into the top of the latch housing, and a spring is located at the bottom of the latch. A screw rod is provided, with a bolt fitting block connected to its bottom. A second return spring is connected between the bottom of the bolt fitting block and the top of the top piece. A pin is connected between the top of the inner cavity of the pin housing and the top of the bolt fitting block. A hydraulic mechanism is provided above the main guide rail. The hydraulic mechanism includes a horizontally placed hydraulic cylinder seat. One end of the hydraulic cylinder seat is connected to a telescopic rod. The outer end of the telescopic rod is connected to the top of the fire door leaf through a curved arm. A piston head is provided at the inner end of the telescopic rod. The piston head slides in cooperation with the inner cavity wall of the hydraulic cylinder seat. A door closing return spring is provided between the inner cavity of the hydraulic cylinder seat and the piston head.

[0007] Furthermore, the secondary guide rail is provided with horizontally arranged lower rollers at equal intervals, and the lower rollers on the secondary guide rail roll against the side wall of the downward groove opened at the bottom of the fire door leaf. The upper and lower crossbeams of the door frame sheet metal are provided with horizontally arranged first side rollers at equal intervals on the side near the fire door leaf, and the first side rollers roll against the upper and lower sides of the fire door leaf.

[0008] Furthermore, a first horizontally placed anti-falling guard beam is provided at the bottom of the fire door leaf and on the side away from the door frame sheet metal; a second horizontally placed anti-falling guard beam is provided at the top of the fire door leaf and on the side away from the door frame sheet metal; and a third horizontally placed anti-falling guard beam is provided at the upper part of the fire door leaf and on the side away from the door frame sheet metal. The first, second, and third anti-falling guard beams are all provided with second rollers arranged horizontally at equal intervals on the side near the fire door leaf, and the second rollers roll and abut against the side of the fire door leaf.

[0009] Furthermore, an anti-disengagement ratchet is integrally formed at the cross hinge point of the fork-type hinge arm, and a sliding pin bracket is integrally formed above the inner cavity of the self-locking component base box. A vertically arranged sliding pin is slidably connected to the sliding pin bracket. An elastic telescopic rod is provided at the bottom end of the sliding pin, and an anti-disengagement tooth is provided at the bottom end of the elastic telescopic rod. The tooth end of the anti-disengagement tooth engages with the tooth groove of the anti-disengagement ratchet.

[0010] Furthermore, the upper end of the sliding pin is provided with an anti-detachment armature, and the top of the inner cavity of the self-locking component base box is provided with an anti-detachment electromagnet corresponding to the position of the anti-detachment armature.

[0011] Furthermore, a control box is provided at the bottom of the inner cavity of the self-locking component base box, and a control panel is provided on the front side of the self-locking component base box. The control panel includes a fingerprint recognition panel and a control button input panel.

[0012] Furthermore, a door-closing electromagnet is provided on the side support of the door frame sheet metal and above the door-closing self-locking assembly, and a door-closing armature is embedded on the side of the fire door leaf near the door-closing electromagnet.

[0013] Furthermore, the upper and lower crossbeams of the door frame sheet metal are provided with limit pin grooves at the positions corresponding to the pins, and the side brackets of the door frame sheet metal are embedded with top pressure sheet metal at the positions corresponding to the top.

[0014] Furthermore, the inner cavity of the hydraulic cylinder seat is filled with buffer oil, and the two ends of the inner cavity of the hydraulic cylinder seat are connected by a fluid guide channel. A speed adjustment screw is screwed along the outer side of the hydraulic cylinder seat, and the inner end of the speed adjustment screw extends into the fluid guide channel.

[0015] Furthermore, the top of the door frame sheet metal is provided with a protective cover, which covers the outside of the main guide rail, the second anti-falling guard beam and the hydraulic mechanism.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model uses an upper hanging wheel on the top of the fire door leaf to slide and connect in the main guide rail for sliding guidance of the fire door leaf. The lower roller on the secondary guide rail rolls against the side wall of the sliding groove opened at the bottom of the fire door leaf, limiting the bottom guidance of the fire door leaf and improving the lateral pressure resistance of the fire door leaf. At the same time, the first side roller on the upper and lower crossbeams of the first side roller and the second roller on the first anti-falling guard beam, the second anti-falling guard beam and the second anti-falling guard beam provide rolling support for both sides of the fire door leaf, ensuring the smoothness of the fire door leaf when opening and greatly improving the lateral pressure resistance of the fire door leaf.

[0018] 2. In this invention, when the fire door is closed, the closing armature is inserted along the middle of a pair of anti-detachment rollers until the pair of anti-detachment rollers engage with the recess of the diamond-shaped part at the outer end of the self-locking plug. Under the action of the anti-detachment spring on the sliding sleeve, the sliding sleeve pulls the fork-type hinge arm through the connecting rod, thereby keeping the pair of anti-detachment rollers clamping the self-locking plug. After the self-locking plug is fully inserted and the pair of anti-detachment rollers are engaged, the tooth end of the bottom end of the anti-detachment latch engages with the tooth groove of the anti-detachment ratchet, thereby positioning the fork-type hinge arm. The system is designed to maintain the self-locking plug clamped between a pair of anti-detachment rollers, preventing it from coming off the rollers and thus locking the fire door. Fingerprint recognition or password input controls the anti-detachment electromagnet to be energized, magnetically attracting the anti-detachment armature at the top of the sliding pin. This disengages the anti-detachment latch teeth from the grooves on the anti-detachment ratchet. Pulling the fire door allows the self-locking plug to disengage from the rollers, enabling the door to slide open.

[0019] 3. After the fire door leaf is closed, the outer end of the top head retracts into the cam housing after contacting the top pressing sheet metal. The traction block connected to the inner end of the top head pulls the lever arm, causing the other end of the lever arm to lift the bottom end of the top piece, thereby causing the outer end of the pin to be pushed out and inserted into the limiting pin groove opened in the upper and lower crossbeams of the door frame sheet metal, which further enhances the anti-side pressure performance of the fire door leaf. When the fire door leaf is opened, the pin retracts into the pin housing under the action of the first return spring and the second return spring. This reinforced structure does not require manual intervention to strengthen the locking and automatically completes the connection of the anti-side pressure structure of the fire door leaf.

[0020] 4. In this utility model, after the fire door leaf is opened, the telescopic rod is pushed by the closing return spring. The outer end of the telescopic rod drives the fire door leaf to move through the curved arm until the fire door leaf automatically completes the sliding closure. During the process of the fire door leaf resetting and closing, the buffer oil located on both sides of the piston head in the inner cavity of the hydraulic cylinder seat is balanced through the liquid guide channel, so that the fire door leaf closes at a certain speed, avoiding the fire door leaf closing too fast and causing noise or damage. Attached Figure Description

[0021] Figure 1 This is a partial cross-sectional view of the three-dimensional structure of this utility model;

[0022] Figure 2 for Figure 1 Enlarged view of a new type of fireproof, explosion-proof, and wind-pressure-resistant sliding door;

[0023] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0024] Figure 4 This is a front view of the three-dimensional structure of this utility model;

[0025] Figure 5 This is a rear side view of the three-dimensional structure of this utility model;

[0026] Figure 6 This is a rear view of the structure of this utility model;

[0027] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 This is a cross-sectional view of the structure of this utility model;

[0029] Figure 9 for Figure 8 Enlarged view at point D;

[0030] Figure 10 for Figure 8 Enlarged view at point E in the middle;

[0031] Figure 11 This is a front view of the structure of this utility model;

[0032] Figure 12 for Figure 11 Enlarged view at point F;

[0033] Figure 13 for Figure 11 Sectional view at point GG;

[0034] Figure 14 This is a three-dimensional structural diagram of the fireproof door core panel in this invention.

[0035] In the diagram: 1. Door frame sheet metal; 101. First side roller; 102. Limit pin groove; 103. Top pressure sheet metal; 2. Main guide rail; 201. Secondary guide rail; 202. First anti-fall protection beam; 203. Second anti-fall protection beam; 204. Third anti-fall protection beam; 205. Lower roller; 206. Second roller; 207. Protective cover; 3. Fire door leaf; 301. Upper hanging roller; 302. Lower sliding groove; 303. Handle; 304. Lock; 305. Self-locking plug; 306. Door closing armature; 3061. Door closing electromagnet; 4. Door closing self-locking assembly; 401. Self-locking assembly base box; 4011. Control box; 402. Fork-type hinge arm; 4021. Anti-fall ratchet; 403. Anti-fall roller; 404. Connecting rod; 405. Slide rod; 4051, Sliding sleeve; 4052, Anti-detachment spring; 406, Sliding pin bracket; 407, Sliding pin; 4071, Elastic telescopic rod; 4072, Anti-detachment armature; 408, Anti-detachment buckle tooth; 409, Anti-detachment electromagnet; 5. Automatic latching mechanism; 501, Cam housing; 5011, Plinth housing; 502, Top head; 503, Traction block; 504, Lever arm; 505, Top piece; 506, Bolt fitting block; 507, Plinth; 508, Screw; 509, First return spring; 5091, Second return spring; 6. Hydraulic mechanism; 601, Hydraulic cylinder seat; 6011, Fluid guide channel; 6012, Speed ​​adjusting screw; 602, Telescopic rod; 6021, Piston head; 603, Crank arm; 604, Door closing return spring. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0037] A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door includes a door frame sheet metal 1, a fireproof door leaf 3, a self-locking closing assembly 4, an automatic latch mechanism 5, and a hydraulic mechanism 6, combined with... Figure 1 , Figure 8 , Figure 9 and Figure 10As shown, the door frame sheet metal 1 is embedded in the wall. The top front side of the door frame sheet metal 1 is provided with a horizontally placed main guide rail 2. The top of the fire door leaf 3 is provided with several upper hanging wheels 301, and the upper hanging wheels 301 provided on the top of the fire door leaf 3 are slidably connected to the main guide rail 2 for guiding the sliding of the fire door leaf 3 and making the fire door leaf 3 open and close smoothly. Correspondingly, the bottom of the fire door leaf 3 is provided with a horizontally placed secondary guide rail 201. The secondary guide rail 201 is provided with horizontally arranged lower rollers 205 at equal intervals. The bottom of the fire door leaf 3 is provided with a downward groove 302, and the lower rollers 205 provided on the secondary guide rail 201 roll against the side wall of the downward groove 302 provided at the bottom of the fire door leaf 3, limiting the bottom guidance of the fire door leaf 3 and improving the lateral pressure resistance of the fire door leaf 3.

[0038] It is worth mentioning that, combined with Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, the upper and lower crossbeams of the door frame sheet metal 1, near the fire door leaf 3, are equipped with equally spaced horizontally arranged first side rollers 101, which roll and abut against the upper and lower sides of the fire door leaf 3. A horizontally placed first anti-falling guard beam 202 is located at the bottom of the fire door leaf 3, away from the door frame sheet metal 1. A horizontally placed second anti-falling guard beam 203 is located at the top of the fire door leaf 3, away from the door frame sheet metal 1. A horizontally placed third anti-falling guard beam 204 is located at the upper part of the fire door leaf 3, away from the door frame sheet metal 1. Both ends of the first, second, and third anti-falling guard beams 202, 203, and 204 are fixed to the wall with bolts. The anti-falling guard beam 204 is provided with second rollers 206 arranged horizontally at equal intervals on one side near the fire door leaf 3. The second rollers 206 roll against the side of the fire door leaf 3. The first side rollers 101 provided on the upper and lower crossbeams of the first side rollers 101, as well as the second rollers 206 provided on the first anti-falling guard beam 202, the second anti-falling guard beam 203, and the second anti-falling guard beam 203, provide rolling support for both sides of the fire door leaf 3. This ensures the smoothness of the fire door leaf 3 when it is opened and greatly improves the side pressure resistance of the fire door leaf 3. A lock 304 is provided on one side of the fire door leaf 3. The lock 304 can be assembled using existing side fire door leaf lock technology. Handles 303 are provided on both sides of the fire door leaf 3 for hand-held force during the movement of the fire door leaf 3.

[0039] like Figure 14As shown, the fire door leaf 3 is composed of a door frame and sheet metal door panels on both sides of the door frame. The door frame has a honeycomb-shaped support keel inside, which improves the overall structural strength of the fire door leaf 3. The honeycomb cavities in the support keel are filled with fireproof material blocks to improve fire resistance and high temperature resistance.

[0040] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: The present invention uses the upper hanging wheel 301 provided on the top of the fire door leaf 3 to slide and connect in conjunction with the main guide rail 2 for the sliding guide of the fire door leaf 3. The lower roller 205 provided on the secondary guide rail 201 rolls against the side wall of the sliding groove 302 opened at the bottom of the fire door leaf 3, limiting the bottom guide of the fire door leaf 3 and improving the lateral pressure resistance of the fire door leaf 3. At the same time, the first side roller 101 provided on the upper and lower crossbeams of the first side roller 101 and the first anti-falling guard beam 202, the second anti-falling guard beam 203 and the second roller 206 provided on the second anti-falling guard beam 203 provide rolling support for both sides of the fire door leaf 3, which not only ensures the smoothness of the fire door leaf 3 when opening, but also greatly improves the lateral pressure resistance of the fire door leaf 3. Example 2

[0041] Combination Figure 1 , Figure 2 , Figure 4 , Figure 11 and Figure 12 As shown, a self-locking plug 305 is provided on one side of the fire door leaf 3, such as... Figure 3 As shown, the outer end of the self-locking plug 305 is a diamond-shaped plug. The side bracket of the door frame sheet metal 1 is provided with a door closing self-locking component 4 at the position corresponding to the self-locking plug 305. The door closing self-locking component 4 includes a self-locking component base box 401 integrally formed with the side bracket of the door frame sheet metal 1. A pair of fork-type hinge arms 402 are hinged inside the self-locking component base box 401. A pair of anti-detachment rollers 403 are connected to one end of the fork-type hinge arm 402 near the self-locking plug 305. The other end of the fork-type hinge arm 402 is hinged to the sliding sleeve 4051 through the connecting rod 404. The sliding sleeve 4051 slides on the sliding rod 405. The sliding rod 405 is horizontally fixed in the self-locking component base box 401. An anti-detachment spring 4052 is provided between the end of the sliding rod 405 and the sliding sleeve 4051. When the fire door leaf 3 is closed, the closing armature 306 is inserted between a pair of anti-detachment rollers 403 until the pair of anti-detachment rollers 403 are engaged with the recess of the diamond-shaped part at the outer end of the self-locking plug 305. Under the action of the anti-detachment spring 4052 on the sliding sleeve 4051, the sliding sleeve 4051 pulls the fork hinge arm 402 through the connecting rod 404, so that the pair of anti-detachment rollers 403 maintain the clamping state of the self-locking plug 305, thereby achieving the self-locking function of the fire door leaf 3.

[0042] It is worth mentioning that, combined with Figure 2, Figure 3 and Figure 12 As shown, an anti-detachment ratchet 4021 is integrally formed at the cross hinge point of the fork-type hinge arm 402. A sliding pin bracket 406 is integrally formed above the inner cavity of the self-locking component base box 401. A vertically arranged sliding pin 407 is slidably connected to the sliding pin bracket 406. The bottom end of the sliding pin 407 is provided with an elastic telescopic rod 4071, and the bottom end of the elastic telescopic rod 4071 is provided with an anti-detachment locking tooth 408. After the self-locking plug 305 is fully inserted and the pair of anti-detachment rollers 403 are engaged, the tooth end of the anti-detachment locking tooth 408 engages with the tooth groove of the anti-detachment ratchet 4021, thereby... The position of the fork-type hinge arm 402 is limited, that is, it maintains the clamping state of the self-locking plug 305 by a pair of anti-detachment rollers 403, thereby preventing the self-locking plug 305 from detaching from the pair of anti-detachment rollers 403. The upper end of the sliding pin 407 is provided with an anti-detachment armature 4072. The top of the inner cavity of the self-locking component base box 401 and the position corresponding to the anti-detachment armature 4072 are provided with an anti-detachment electromagnet 409. By controlling the anti-detachment electromagnet 409 to be energized, the anti-detachment armature 4072 at the upper end of the sliding pin 407 is magnetically attracted, thereby causing the anti-detachment buckle 408 to disengage from the tooth groove on the anti-detachment ratchet 4021. At this point, by pulling the fire door leaf 3, the self-locking plug 305 can disengage from the pair of anti-detachment rollers 403, allowing the fire door leaf 3 to slide open. A control box 4011 is located at the bottom of the inner cavity of the self-locking component base box 401, and a control panel is located on the front side of the self-locking component base box 401. The control panel includes a fingerprint recognition panel and a control button input panel. The control box 4011 receives and recognizes the key entered through the fingerprint recognition panel or the control button input panel. Only after successful recognition can it issue a command to energize the anti-detachment electromagnet 409, allowing the fire door leaf 3 to slide open. When the door is opened, a closing electromagnet 3061 is provided on the side bracket of the door frame sheet metal 1 and above the closing self-locking assembly 4. A closing armature 306 is embedded on the side of the fire door leaf 3 near the closing electromagnet 3061. When the closing electromagnet 3061 is energized, it can attract the closing armature 306, thereby assisting the fire door leaf 3 to close. After the correct key is entered through the control panel, the closing electromagnet 3061 is de-energized for 3-5 seconds, which disconnects the attraction of the closing electromagnet 3061 to the closing armature 306 on one side of the fire door leaf 3, making it convenient for the fire door leaf 3 to open.

[0043] The technical solutions described in the above embodiments of this application have at least the following technical effects or advantages: When the fire door leaf 3 is closed, the closing armature 306 is inserted along the middle of a pair of anti-detachment rollers 403 until the pair of anti-detachment rollers 403 are engaged with the recess of the diamond-shaped part at the outer end of the self-locking plug 305. Under the action of the anti-detachment spring 4052 on the sliding sleeve 4051, the sliding sleeve 4051 pulls the fork hinge arm 402 through the connecting rod 404, thereby keeping the pair of anti-detachment rollers 403 clamping the self-locking plug 305. After the self-locking plug 305 is fully inserted and the pair of anti-detachment rollers 403 are engaged, the tooth end of the bottom end of the anti-detachment buckle 408 engages with the anti-detachment ratchet 4021. The toothed grooves engage to limit the position of the fork-type hinge arm 402, thus maintaining the clamping state of the self-locking plug 305 between the pair of anti-detachment rollers 403 and preventing the self-locking plug 305 from disengaging from the pair of anti-detachment rollers 403, thereby achieving the self-locking function of the fire door leaf 3; by controlling the anti-detachment electromagnet 409 to be energized through fingerprint recognition or password input, the anti-detachment armature 4072 at the upper end of the sliding pin 407 is magnetically attracted, thereby causing the anti-detachment latch 408 to disengage from the toothed groove on the anti-detachment ratchet 4021. At this time, by pulling the fire door leaf 3, the self-locking plug 305 can be disengaged from the pair of anti-detachment rollers 403, so that the fire door leaf 3 can slide open. Example 3

[0044] Combination Figure 5 , Figure 6 and Figure 7As shown, the fire door leaf 3 is equipped with an automatic latching mechanism 5 at both the upper and lower positions inside. The automatic latching mechanism 5 includes a horizontally arranged cam housing 501 and a vertically arranged latch housing 5011. A top head 502 is slidably inserted into the outer end of the cam housing 501, and a traction block 503 is provided at the inner end of the top head 502. A lever arm 504 is hinged to the middle of the cam housing 501, and one end of the lever arm 504 is connected to the traction block 503 through a pin. A top member 505 is provided at the bottom of the inner cavity of the latch housing 5011, and the other end of the lever arm 504 abuts against the bottom of the top member 505. A vertically positioned pin 507 is slidably inserted into the top of the pin housing 5011. A screw 508 is provided at the bottom of the pin 507. A bolt fitting block 506 is connected to the bottom of the screw 508. A second return spring 5091 is connected between the bottom of the bolt fitting block 506 and the top of the top piece 505. The pin 507 is connected between the top of the inner cavity of the pin housing 5011 and the top of the bolt fitting block 506. A limit pin groove 102 is provided on the upper and lower crossbeams of the door frame sheet metal 1 at the position corresponding to the pin 507. A top pressing sheet metal 103 is embedded in the side bracket of the door frame sheet metal 1 at the position corresponding to the top head 502. After the fire door leaf 3 is closed, the outer end of the top head 502 abuts against the top pressing sheet metal 103 and retracts into the cam housing 501. The traction block 503 connected to the inner end of the top head 502 pulls the lever arm 504, causing the other end of the lever arm 504 to lift the bottom end of the top piece 505, thereby causing the outer end of the latch 507 to be pushed out and inserted into the limiting pin groove 102 opened in the upper and lower crossbeams of the door frame sheet metal 1, further strengthening the anti-lateral pressure performance of the fire door leaf 3. When the fire door leaf 3 is opened, the latch 507 retracts into the latch housing 5011 under the action of the first return spring 509 and the second return spring 5091.

[0045] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: After the fire door leaf 3 is closed, the outer end of the top head 502 abuts against the top pressing sheet metal 103 and retracts into the cam housing 501. The traction block 503 connected to the inner end of the top head 502 pulls the lever arm 504, causing the other end of the lever arm 504 to lift the bottom end of the top piece 505, thereby causing the outer end of the pin 507 to be pushed out and inserted into the limiting pin groove 102 opened in the upper and lower crossbeams of the door frame sheet metal 1, further strengthening the anti-side pressure performance of the fire door leaf 3. When the fire door leaf 3 is opened, the pin 507 retracts into the pin housing 5011 under the action of the first return spring 509 and the second return spring 5091. This strengthening structure does not require manual intervention to strengthen the locking and automatically completes the connection of the anti-side pressure structure of the fire door leaf 3. Example 4

[0046] Combination Figure 1 , Figure 11 and Figure 13As shown, a hydraulic mechanism 6 is provided above the main guide rail 2. The hydraulic mechanism 6 includes a horizontally placed hydraulic cylinder seat 601. One end of the hydraulic cylinder seat 601 is connected to a telescopic rod 602. The outer end of the telescopic rod 602 is connected to the top of the fire door leaf 3 through a crank arm 603. The inner end of the telescopic rod 602 is provided with a piston head 6021. The piston head 6021 slides in cooperation with the inner cavity wall of the hydraulic cylinder seat 601. A door closing return spring 604 is provided between the inner cavity side of the hydraulic cylinder seat 601 and the piston head 6021. After the fire door leaf 3 is opened, the telescopic rod 602 is pushed by the door closing return spring 604. The outer end of the telescopic rod 602 drives the fire door leaf 3 to move through the crank arm 603 until the fire door leaf 3 automatically completes the sliding closure.

[0047] The inner cavity of the hydraulic cylinder seat 601 is filled with buffer oil. The two ends of the inner cavity of the hydraulic cylinder seat 601 are connected by a fluid guide channel 6011. During the reset and closing process of the fire door leaf 3, the buffer oil located on both sides of the piston head 6021 in the inner cavity of the hydraulic cylinder seat 601 is balanced through the fluid guide channel 6011, so that the fire door leaf 3 closes at a certain speed, avoiding the fire door leaf 3 from closing too fast and causing noise or damage. A speed adjustment screw 6012 is screwed along the outside of the hydraulic cylinder seat 601, and the inner end of the speed adjustment screw 6012 extends into the fluid guide channel 6011. By rotating the speed adjustment screw 6012, the flow rate through the fluid guide channel 6011 can be adjusted, that is, the speed of the fire door leaf 3 when it resets and closes can be adjusted.

[0048] The top of the door frame sheet metal 1 is provided with a protective cover 207, which covers the outside of the main guide rail 2, the second anti-falling guard beam 203 and the hydraulic mechanism 6, and protects the covered structural components.

[0049] The technical solutions described in the above embodiments of this application have at least the following technical effects or advantages: After the fire door leaf 3 is opened, the telescopic rod 602 is pushed by the closing reset spring 604. The outer end of the telescopic rod 602 drives the fire door leaf 3 to move through the crank arm 603 until the fire door leaf 3 automatically completes the sliding closure. During the reset and closure process of the fire door leaf 3, the buffer oil located on both sides of the piston head 6021 in the inner cavity of the hydraulic cylinder seat 601 is balanced through the liquid guide channel 6011, so that the fire door leaf 3 closes at a certain speed, avoiding the fire door leaf 3 from closing too fast and causing noise or damage.

[0050] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door, comprising a door frame sheet metal (1), a fireproof door leaf (3), a self-locking closing assembly (4), an automatic latch mechanism (5), and a hydraulic mechanism (6), characterized in that, The top front of the door frame sheet metal (1) is provided with a horizontally placed main guide rail (2). The top of the fire door leaf (3) is provided with several upper hanging wheels (301), and the upper hanging wheels (301) on the top of the fire door leaf (3) are slidably connected to the main guide rail (2). Corresponding to the bottom of the fire door leaf (3), a horizontally placed secondary guide rail (201) is provided. The bottom of the fire door leaf (3) is provided with a downward groove (302), and the secondary guide rail (201) is fitted into the downward groove (302). A lock (304) is provided on one side of the fire door leaf (3), and handles (303) are provided on both sides of the fire door leaf (3). A self-locking plug (305) is provided on one side of the fire door leaf (3). 1) A door-closing self-locking assembly (4) is provided on the side bracket corresponding to the self-locking plug (305). The door-closing self-locking assembly (4) includes a self-locking assembly base box (401) integrally formed with the side bracket of the door frame sheet metal (1). A pair of fork-type hinge arms (402) are hinged inside the self-locking assembly base box (401). A pair of anti-detachment rollers (403) are connected to one end of the fork-type hinge arm (402) near the self-locking plug (305). The other end of the fork-type hinge arm (402) is hinged to the sliding sleeve (4051) through the connecting rod (404). The sliding sleeve (4051) slides on the sliding rod (405). The sliding rod (405) is horizontally fixed in the self-locking assembly base box (401). The end of the sliding rod (405) is connected to the sliding sleeve (4051). An anti-disengagement spring (4052) is provided between 051). An automatic latching mechanism (5) is provided at both the upper and lower positions inside the fire door leaf (3). The automatic latching mechanism (5) includes a horizontally arranged cam housing (501) and a vertically arranged latch housing (5011). A top head (502) is slidably inserted into the outer end of the cam housing (501). A traction block (503) is provided at the inner end of the top head (502). A lever arm (504) is hinged to the middle of the cam housing (501). One end of the lever arm (504) is connected to the traction block (503) through a pin. A top piece (505) is provided at the bottom of the inner cavity of the latch housing (5011). The other end of the lever arm (504) is connected to the top piece (505). The top part (505) abuts against each other at the bottom. A vertically arranged pin (507) is slidably inserted into the top of the pin housing (5011). A screw (508) is provided at the bottom of the pin (507). A bolt fitting block (506) is connected to the bottom of the screw (508). A second return spring (5091) is connected between the bottom of the bolt fitting block (506) and the top of the top part (505). The pin (507) is connected between the top of the inner cavity of the pin housing (5011) and the top of the bolt fitting block (506). A hydraulic mechanism (6) is provided above the main guide rail (2). The hydraulic mechanism (6) includes a horizontally placed hydraulic cylinder seat (601). A telescopic rod (602) is connected to one end of the hydraulic cylinder seat (601).The outer end of the telescopic rod (602) is connected to the top of the fire door leaf (3) via a crank arm (603). The inner end of the telescopic rod (602) is provided with a piston head (6021), which slides against the inner wall of the hydraulic cylinder seat (601). A door-closing return spring (604) is provided between the inner side of the hydraulic cylinder seat (601) and the piston head (6021).

2. The novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The secondary guide rail (201) is provided with horizontally arranged lower rollers (205) at equal intervals, and the lower rollers (205) on the secondary guide rail (201) roll against the side wall of the downward groove (302) opened at the bottom of the fire door leaf (3). The upper and lower crossbeams of the door frame sheet metal (1) and the side closest to the fire door leaf (3) are provided with horizontally arranged first side rollers (101) at equal intervals, and the first side rollers (101) roll against the upper and lower sides of the fire door leaf (3).

3. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The bottom of the fire door leaf (3) and the side away from the door frame sheet metal (1) is provided with a horizontally placed first anti-falling guard beam (202). The top of the fire door leaf (3) and the side away from the door frame sheet metal (1) is provided with a horizontally placed second anti-falling guard beam (203). The upper part of the fire door leaf (3) and the side away from the door frame sheet metal (1) is provided with a horizontally placed third anti-falling guard beam (204). The first anti-falling guard beam (202), the second anti-falling guard beam (203) and the third anti-falling guard beam (204) are all provided with second rollers (206) arranged horizontally at equal intervals on the side of the fire door leaf (3), and the second rollers (206) roll against the side of the fire door leaf (3).

4. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, An anti-disengagement ratchet (4021) is integrally formed at the cross hinge point of the fork-type hinge arm (402). A sliding pin bracket (406) is integrally formed above the inner cavity of the self-locking component base box (401). A vertically arranged sliding pin (407) is slidably connected to the sliding pin bracket (406). An elastic telescopic rod (4071) is provided at the bottom end of the sliding pin (407). An anti-disengagement tooth (408) is provided at the bottom end of the elastic telescopic rod (4071), and the tooth end of the anti-disengagement tooth (408) is engaged with the tooth groove of the anti-disengagement ratchet (4021).

5. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 4, characterized in that, The upper end of the sliding pin (407) is provided with an anti-disengagement armature (4072), and the top of the inner cavity of the self-locking component base box (401) is provided with an anti-disengagement electromagnet (409) corresponding to the position of the anti-disengagement armature (4072).

6. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The bottom of the inner cavity of the self-locking component base box (401) is provided with a control box (4011), and the front side of the self-locking component base box (401) is provided with a control panel, which includes a fingerprint recognition panel and a control button input panel.

7. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The side support of the door frame sheet metal (1) and above the door closing self-locking assembly (4) is provided with a door closing electromagnet (3061), and a door closing armature (306) is embedded on the side of the fire door leaf (3) near the door closing electromagnet (3061).

8. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The upper and lower crossbeams of the door frame sheet metal (1) are provided with limit pin grooves (102) at the positions corresponding to the pins (507), and the side brackets of the door frame sheet metal (1) are provided with top pressing sheet metal (103) at the positions corresponding to the top head (502).

9. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The inner cavity of the hydraulic cylinder seat (601) is filled with buffer oil. The two ends of the inner cavity of the hydraulic cylinder seat (601) are connected by a fluid guide channel (6011). A speed regulating screw (6012) is screwed along the outer side of the hydraulic cylinder seat (601), and the inner end of the speed regulating screw (6012) extends into the fluid guide channel (6011).

10. A novel fireproof, explosion-proof, and wind-pressure-resistant sliding door according to claim 1, characterized in that, The top of the door frame sheet metal (1) is provided with a protective cover (207), which covers the outside of the main guide rail (2), the second anti-falling guard beam (203) and the hydraulic mechanism (6).

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