CN218739938U - Automatic fireproof plugging device of overlapped dead weight sliding fire retardant mechanism - Google Patents

Abstract

The utility model discloses an overlap automatic fire prevention plugging device of dead weight slip back-fire relief mechanism, including the fire prevention, the building hole, building hole bilateral symmetry is provided with the track fixed plate, the track fixed plate is equipped with first track respectively towards building hole symmetrical direction, the second track, the third track, it is equipped with first shutoff board to inlay between two first tracks, the second shutoff board has been arranged between two second tracks, the third shutoff board has been arranged between two third tracks, first shutoff board, second shutoff board and third shutoff board top both ends are provided with the wire rope hasp respectively. The utility model discloses the wisdom procedure with the settlement is starting signal, adopts the automatic fire prevention plugging device who overlaps the dead weight slip back-fire relief mechanism to come the various vestibule that have commodity circulation transmission device, prevent the building hole of hot wall, fire compartment wall, floor, shaft export, not only promotes safe fire prevention coefficient and efficiency, simple structure moreover, and design cost is lower, and the installation is simplified more.

Description

Automatic fireproof plugging device of overlapped dead weight sliding fire retardant mechanism

Technical Field

The invention belongs to the technical field of fire prevention, and particularly relates to an automatic fire prevention plugging device of an overlapped dead weight sliding fire retardant mechanism.

Background

The fireproof plugging and the safety protection are contradictory and unified, namely, the safety fireproof and the safety protection can be realized, and the two-in-one effect is achieved; the fireproof partition is used for blocking various logistics transmission mechanisms to prevent fire from spreading through the gaps and gaps, so that personnel and equipment are protected; meanwhile, the problem of safety protection of the rear end of a security check machine is solved, the rear end of the security check machine commonly existing in an airport at present adopts cloth strips to protect safety, the requirement of safety protection cannot be met, potential safety hazards are serious, an automatic fireproof blocking device (an automatic locking device of the security check machine) overlapping with a dead weight sliding fire retardant mechanism is adopted, and the purposes of safety fire prevention and safety protection are achieved.

At present, a lot of fireproof plugging devices are used in the market, but the fireproof plugging devices used in various logistics transmission mechanism states do not have good automatic fireproof plugging devices, cannot meet fireproof requirements, and the rear end of a security inspection machine does not have good protection devices.

Accordingly, those skilled in the art have provided an automatic fire blocking device (automatic locking device for security check machine) that overlaps the dead weight sliding fire stopping mechanism to solve the problems set forth in the background art described above.

Disclosure of Invention

The technical scheme adopted by the invention is as follows: an automatic fire blocking device of an overlapping dead weight sliding firestop mechanism, comprising:

building a hole;

the building hole is characterized in that track fixing plates are symmetrically arranged on two sides of the building hole, the track fixing plates are respectively provided with a first track, a second track and a third track towards the symmetrical direction of the building hole, a first plugging plate is embedded between the two first tracks, a second plugging plate is arranged between the two second tracks, a third plugging plate is arranged between the two third tracks, steel wire rope latches are respectively arranged at two ends above the first plugging plate, the second plugging plate and the third plugging plate, and a first plugging plate uplink limiting block, a second plugging uplink limiting block, a third plugging plate uplink limiting block, a first plugging plate downlink limiting block, a second plugging plate downlink limiting block and a third plugging plate downlink limiting block are respectively arranged on the outer sides of the upper ends and the outer sides of the lower ends of the two sides of the first plugging plate, the second plugging plate and the third plugging plate;

fire-proof plates are embedded in the first blocking plate, the second blocking plate and the third blocking plate;

the outer wall of the first plugging plate is provided with a first plugging plate lifting wheel, a first plugging plate running guide wheel and a first plugging plate running guide wheel adjusting spring;

a second plugging plate running guide wheel and a second plugging plate running guide wheel adjusting spring are arranged on the outer wall of the second plugging plate;

the outer wall of the third plugging plate is provided with a third plugging plate running guide wheel and a third plugging plate running guide wheel adjusting spring;

the first rail, the second rail and the third rail are respectively provided with a left upper plate, a right upper plate, a left lower plate, a right lower plate, a left upper plate and a right upper plate towards the upper end and the lower end of the outer side of the building hole, the upper part and the lower part of the outer wall of the first rail, the second rail and the third rail are respectively provided with a first guide wheel, a second guide wheel and a third guide wheel, a first counterweight block slide rail, a second counterweight block slide rail and a third counterweight block slide rail are respectively arranged between the left upper plate and the left lower plate, a first counterweight block slide rail, a second counterweight block slide rail and a third counterweight block slide rail are respectively arranged between the right upper plate and the right lower plate, and the counterweight blocks are respectively connected to the outer walls of the first counterweight block slide rail, the second counterweight block slide rail and the third counterweight block slide rail in a sliding manner;

furthermore, the balancing weight is composed of a plurality of groups of thin sheets, a hole is formed in the center of the balancing weight, a balancing weight bolt penetrates through the hole in the center of the balancing weight, the bottom of the balancing weight bolt is fixed by a balancing weight bolt adjusting nut, and the top of the balancing weight bolt is hinged with a balancing weight running wheel.

Furthermore, the outer walls of the left upper plate and the right upper plate are respectively and correspondingly inserted with a first guide wheel, a second guide wheel and a third guide wheel in a rotating mode, and holes for the steel wire rope to pass through are formed in the positions, corresponding to the first guide wheel, the second guide wheel and the third guide wheel, of the lower portions of the first guide wheel, the second guide wheel and the third guide wheel.

Further, the base is fixed on the wall, motor, V type action wheel, wire rope hasp and control system have been arranged to the top of base, the below of base is equipped with directional guide pulley, the base is in the below of V type action wheel and has been seted up the hole of walking and be used for the wire rope of walking, and the motor passes through shaft coupling and V type action wheel coupling, wire rope hasp inlays the one end of locating wire rope, wire rope's one end is walked around first shutoff board lifting pulley downwards and is gone up the articulate in the inner wall department of V type action wheel, wire rope's one end is walked around directional guide pulley downwards and is led to walk around the wire rope hasp that the balancing weight running pulley upwards articulates on the upper right plate downwards to the first leading wheel of upper right plate top.

Furthermore, the two ends above the second blocking plate and the third blocking plate are respectively arranged on the outer wall of the steel wire rope lock catch.

Furthermore, the steel wire ropes are respectively led out from the steel wire rope lock catches on the two sides of the second plugging plate, are wound on the left and right second guide wheels downwards, then bypass the counterweight block running wheel and are respectively hung on the steel wire rope lock catches on the left upper plate and the right upper plate to be locked.

Furthermore, the steel wire rope lock catches at two ends above the third plugging plate respectively draw out a steel wire rope to wind the left and right third guide wheels downwards and then wind the counterweight block running wheel upwards to be respectively hung on the steel wire rope lock catches of the left upper plate and the right upper plate to be locked.

Furthermore, the track logistics transmission mechanism structure that first shutoff board below corresponds has seted up the opening, the both sides of opening are provided with the dead weight of symmetry combination respectively and slide back-fire relief mechanism, the outer wall of first shutoff board is provided with burglar alarm module, starts burglar alarm when being opened under the abnormal conditions.

Furthermore, the wall surface is a trapezoidal wall surface structure when the first plugging plate, the second plugging plate and the third plugging plate are closed.

Further, symmetrical combination dead weight slip back-fire relief mechanism is provided with a pair of U type fixed plate of controlling corresponding direction, the outside of U type fixed plate is equipped with slider right-angle board and slide rail, be equipped with the corner connecting piece between right-angle board and the U type fixed plate, U type fixed plate is through the pivot coupling, the roll pulley is fixed in the right-angle board lower extreme, the back-fire relief module that corresponds and track commodity circulation transmission device and concave convex physique is arranged towards opening and building hole direction to the right-angle board, the both sides of building hole are arranged according to first shutoff board, second shutoff board, third shutoff board overlap structure respectively.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

in the invention, a set intelligent program is used as a starting signal, and the automatic fireproof plugging device of the overlapped self-weight sliding fire retardant mechanism is adopted to plug various building holes with a corridor, a firewall, a fireproof partition wall, a floor slab and a shaft outlet of the logistics transmission mechanism, so that the safety and fire protection coefficient and efficiency are improved, the structure is simple, the design cost is low, and the installation is simplified.

Drawings

FIG. 1 is a front elevation view of the invention in section;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a schematic view of the upper left panel of the present invention;

FIG. 4 is a schematic view of the right upper plate of the present invention;

FIG. 5 is a schematic view of a counterweight according to the present invention;

FIG. 6 is a schematic view of a first track of the present invention;

FIG. 7 is a schematic view of a second sliding rail of the counterweight of the present invention;

FIG. 8 is a schematic view of an ascending limiting block of the first plugging plate according to the present invention;

FIG. 9 is a schematic illustration of a flame retardant panel, according to the invention;

FIG. 10 is a schematic view of a third closure plate operating idler adjustment spring of the present invention;

fig. 11 is a schematic view of the slide rail of the present invention.

In the figure: 10. building a hole; 101. a wall surface; 102. a trapezoidal wall surface; 20. a rail fixing plate; 201. a first track; 202. a second track; 203. a third track; 2011. a first guide wheel; 2021. a second guide wheel; 2031. a third guide wheel; 204. a left upper plate; 205. a left lower plate; 206. a right upper plate; 207. a right lower plate; 208. a first counterweight slide rail; 209. a second counterweight slide rail; 210. a third counterweight slide rail; 211. a balancing weight; 2111. a counterweight block bolt; 2112. a balancing weight bolt adjusting nut; 2113. a counterweight travel wheel; 30. a base; 301. a motor; 3011. a coupling; 302. a V-shaped driving wheel; 303. a directional guide wheel; 304. locking the steel wire rope; 305. a control system; 3041. a wire rope; 40. a first plugging plate; 401. the first plugging plate goes up the limiting block; 402. a first plugging plate descending limiting block; 403. a first plugging plate lifting wheel; 404. the first plugging plate runs the guide wheel; 405. the first plugging plate operates the guide wheel adjusting spring; 406. the symmetrical combination deadweight sliding fire-retardant mechanism; 4061. a U-shaped fixing plate; 4062. a right-angle plate; 4063. a corner connector; 4064. a rotating shaft; 4065. a rolling pulley; 4066. a slider right-angle plate; 4067. a fire retardant module; 4068. a slide rail; 407. opening; 50. a second plugging plate; 501. a second plugging uplink limiting block; 502. a second plugging plate descending limiting block; 503. the second plugging plate runs the guide wheel; 504. the second plugging plate operates the guide wheel adjusting spring; 60. a third plugging plate; 601. a third plugging plate goes up a limiting block; 602. a third plugging plate descending limiting block; 603. the third plugging plate runs the guide wheel; 604. the third plugging plate runs the guide wheel adjusting spring; 70. a fire-proof plate; 80. a rail logistics transport mechanism; 90. and an anti-theft alarm module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment one, referring to fig. 1 to 11: an automatic fire blocking device of an overlapping dead weight sliding fire stop mechanism, comprising:

building a hole 10;

the two sides of the building hole 10 are symmetrically provided with a track fixing plate 20, the track fixing plate 20 is respectively provided with a first track 201, a second track 202 and a third track 203 towards the symmetrical direction of the building hole 10, a first plugging plate 40 is embedded between the two first tracks 201, a second plugging plate 50 is arranged between the two second tracks 202, a third plugging plate 60 is arranged between the two third tracks 203, the two ends above the first plugging plate 40, the second plugging plate 50 and the third plugging plate 60 are respectively provided with a steel wire lock 304, the outer sides of the upper ends and the outer sides of the lower ends of the two sides of the first plugging plate 40, the second plugging plate 50 and the third plugging plate 60 are respectively provided with a first plugging plate uplink limiting block 401, a second plugging uplink limiting block 501, a third plugging plate uplink limiting block 601, a first plugging plate downlink limiting block 402, a second plugging plate downlink limiting block 502 and a third plugging plate downlink limiting block 602, the fireproof plate 70 is embedded in the first plugging plate 40, the second plugging plate 50 and the third plugging plate 60, the first plugging plate lifting wheel 403, the first plugging plate running guide wheel 404 and the first plugging plate running guide wheel adjusting spring 405 are arranged on the outer wall of the first plugging plate 40, the second plugging plate running guide wheel 503 and the second plugging plate running guide wheel adjusting spring 504 are arranged on the outer wall of the second plugging plate 50, the third plugging plate running guide wheel 603 and the third plugging plate running guide wheel adjusting spring 604 are arranged on the outer wall of the third plugging plate 60, the left upper plate 204, the right upper plate 206, the left lower plate 205 and the right lower plate 207 are respectively arranged on the upper end and the lower end of the outer side of the building hole 10 of the first rail 201, the second rail 202 and the third rail 203, the first guide wheel 2011, the second guide wheel 2021 are respectively arranged on the upper side and the lower side of the outer wall of the first rail 201, the second rail 202 and the third rail 203, A third guide wheel 2031, wherein a first counterweight slide rail 208, a second counterweight slide rail 209 and a third counterweight slide rail 210 are respectively arranged between the left upper plate 204 and the left lower plate 205, a first counterweight slide rail 208, a second counterweight slide rail 209 and a third counterweight slide rail 210 are respectively arranged between the right upper plate 206 and the right lower plate 207, a counterweight 211 is respectively connected to the outer walls of the first counterweight slide rail 208, the second counterweight slide rail 209 and the third counterweight slide rail 210 in a sliding manner, the counterweight 211 is composed of a plurality of groups of sheets, a hole is arranged in the center, a counterweight bolt 2111 passes through the central hole of the counterweight 211, the bottom of the counterweight is fixed by a counterweight bolt adjusting nut 2112, the top of the counterweight is hinged with a counterweight running wheel 2113, a control system 305 is started to send a closing instruction, a motor 301 rotates counterclockwise, a coupler 3011 connected to the motor 301 rotates to drive a V-shaped driving wheel 302 counterclockwise, the wedge-shaped included angle function of the V-shaped driving wheel 302 drives a steel wire rope 3041 to rotate counterclockwise, a steel wire rope 3041 led out from a steel rope 304 on a base 30 downwards winds around a first plugging plate lifting wheel 403 to hang downwards to the V-shaped driving wheel 302 to wind a first counterweight running wheel 2011 of the right upper guide wheel 206 to run around the right counterweight running wheel 304 to run around the upper plate 304; the first plugging plate running guide wheel 404 runs downwards along the first track 201 under the combined force of the motor 301 and the balancing weight 211, the balancing weight 211 runs upwards along the first balancing weight slide rail 208, and the second plugging plate 50 is driven to run downwards when the first plugging plate descending limiting block 402 runs to the second plugging plate descending limiting block 502; meanwhile, the steel wire ropes 3041 led out from the steel wire rope buckles 304 at the two ends above the second blocking plate 50 respectively downwards bypass the counterweight block running wheels 2113 through the second guide wheels 2021 on the right upper plate 206 of the left upper plate 204 and are hung upwards on the steel wire rope buckles 304 of the left upper plate 204 and the right upper plate 206, and the counterweight block 211 upwards runs along the second counterweight block slide rails 209; when the second plugging plate descending limiting block 502 runs to the third plugging plate descending limiting block 602, the third plugging plate 60 is driven to run downwards, meanwhile, the steel wire 3041 led out from the steel wire rope lock catches 304 at the two ends above the third plugging plate 60 respectively downwards bypasses the counterweight block running wheel 2113 and is hung upwards on the steel wire rope lock catches 304 of the left upper plate 204 and the right upper plate 206 through the third guide wheel 2031 on the right upper plate 206 of the left upper plate 204, the counterweight block 211 runs upwards along the third counterweight block sliding rail 210, when the first plugging plate 40 approaches the ground, the slider right-angle plate 4066 is triggered to move upwards under the action of the sliding rail 4068 and simultaneously drive the rolling pulley 4065, and under the action of natural gravity, the rolling pulley 4065 of the symmetrically combined self-weight sliding fire retardant mechanism 406 moves towards the opening right-angle 407 direction along the plane of the slider block 4066, and the concave-convex part of the rail logistics transmission mechanism 80 on the pushing plate 4062 is pressed to be matched, butted and closed; at this point the building aperture 10 is closed and the control system 305 instructs the motor 301 to stop rotating.

The control system is started to send out a turn-on instruction 305, the motor 301 rotates clockwise, the coupler 3011 connected to the motor 301 rotates to drive the V-shaped driving wheel 302 to rotate clockwise, the wedge-shaped included angle function of the V-shaped driving wheel 302 drives the steel wire rope 3041 to rotate clockwise, the steel wire rope 3041 led out by the steel wire rope lock catch 304 on the base 30 downwardly rounds the first plugging plate lifting wheel 403 to upwardly hang on the V-shaped driving wheel 302, downwardly rounds the directional guide wheel 303 to guide the steel wire rope 2011 above the right upper plate 206 to downwardly round the counterweight running wheel 2113 to upwardly hang on the steel wire rope lock catch 304 on the right upper plate 206; under the combined force action of the motor 301 and the counterweight block 211, the first plugging plate running guide wheel 404 runs upwards along the first track 201, the counterweight block 211 runs downwards along the first counterweight block sliding rail 208, when the first plugging plate 40 leaves the ground, the slider right-angle plate 4066 is far away from the ground, the slider right-angle plate 4066 moves downwards along the sliding rail 4068 under the action of natural gravity, meanwhile, the rolling pulley 4065 moves downwards under the action of natural force, the symmetrically combined self-weight sliding fire retardant mechanism 406 and the rolling pulley 4065 automatically move backwards to the notch 407 on the plane of the slider right-angle plate 4066 to drive the fire retardant module 4067 on the right-angle plate 4062 to leave the concave-convex part of the track logistics transmission mechanism 80 to be matched, butted and opened, and when the first plugging plate ascending limiting block 401 runs to the second plugging plate ascending limiting block 501, the second plugging plate 50 is driven to run upwards; meanwhile, the wire ropes 3041 led out from the wire rope latches 304 at the two ends above the second blocking plate 50 respectively downwards bypass the counterweight block running wheels 2113 through the second guide wheels 2021 on the right upper plate 206 of the left upper plate 204 and are hung upwards on the wire rope latches 304 of the left upper plate 204 and the right upper plate 206, and the counterweight block 211 runs downwards along the second counterweight block slide rail 209; when the second plugging plate ascending limiting block 501 moves to the third plugging plate ascending limiting block 601, the third plugging plate 60 is driven to move upwards, meanwhile, the steel wire 3041 led out from the steel wire rope buckles 304 at the two ends above the third plugging plate 60 respectively downwards bypasses the counterweight block moving wheel 2113 through the third guide wheel 2031 on the right upper plate 206 of the left upper plate 204 and upwards hangs on the steel wire rope buckles 304 of the left upper plate 204 and the right upper plate 206, the counterweight block 211 downwards moves along the third counterweight block slide rail 210, and when the first plugging plate 40, the second plugging plate 50 and the third plugging plate 60 simultaneously move to the building hole 10 and are opened, the control system 305 sends an instruction to stop the motor 301 from rotating. After the intelligent anti-theft mechanism 90 intelligent program is started, an intelligent opening and closing program is set after the intelligent anti-theft mechanism is started, when an article comes from the article stream transmission mechanism 80, the article is automatically opened, the article is automatically closed, after smoke alarm occurs in fire, the automatic fire alarm control device is automatically or manually closed and is not opened any more, after smoke alarm occurs in fire, the intelligent program is manually recovered, and when the intelligent anti-theft mechanism is forcibly started, the alarm whistle is given out to alarm.

Example two, with reference to fig. 1-11: a first guide wheel 2011, a second guide wheel 2021 and a third guide wheel 2031 are respectively and correspondingly inserted on the outer walls of the left upper plate 204 and the right upper plate 206 in a rotating manner, holes are correspondingly arranged below the first guide wheel 2011, the second guide wheel 2021 and the third guide wheel 2031 for a steel wire rope 3041 to pass through, the base 30 is fixed on the wall surface 101, a motor 301, a V-shaped driving wheel 302, a steel wire rope lock catch 304 and a control system 305 are arranged above the base 30, a directional guide wheel 303 is arranged below the base 30, a passing hole is arranged below the V-shaped driving wheel 302 for a steel wire rope 3041 to pass through on the base 30, the motor 301 is coupled with the V-shaped driving wheel 302 through a coupler 3011, the steel wire rope lock catch 304 is embedded at one end of the steel wire rope 3041, one end of the steel wire rope 3041 downwardly winds around the first blocking plate lifting wheel 403 and upwardly hangs on the inner wall of the V-shaped driving wheel 302, one end of a steel wire rope 3041 downwards bypasses the directional guide wheel 303 and is guided to a first guide wheel 2011 above the right upper plate 206 downwards bypasses a counterweight block running wheel 2113 to be hung on a steel wire rope lock 304 on the right upper plate 206 upwards, two ends above the second blocking plate 50 and the third blocking plate 60 are respectively arranged at the outer walls of the steel wire rope lock 304, the steel wire rope lock 304 at two sides of the second blocking plate 50 respectively guides a steel wire rope 3041 to be wound on a left second guide wheel 2021 and a right second guide wheel 2021 downwards and then bypasses the counterweight block running wheel 2113 to be respectively hung on the left upper plate 204 and the right upper plate 206 to be locked, the steel wire rope lock 304 at two ends above the third blocking plate 60 respectively guides a steel wire rope 3041 to be wound on a left third guide wheel 2031 and a right third guide wheel 2113 to be respectively hung on the left upper plate 204 and the right upper plate 206 to be locked upwards, a corresponding rail logistics transmission mechanism 80 structure below the first blocking plate 40 is provided with gaps 407, two sides of the gaps are respectively provided with symmetrically combined self-weight sliding fire-stopping mechanisms 406, the outer wall of first shutoff board 40 is provided with burglar alarm module 90, start burglar alarm when being opened under abnormal circumstances, first shutoff board 40, second shutoff board 50, wall 101 is trapezoidal wall 102 structure when third shutoff board 60 is closed, symmetrical combination dead weight slip back-fire relief mechanism 406 is provided with a pair of U type fixed plate 4061 that corresponds the direction from left to right, the outside of U type fixed plate 4061 is equipped with slider right-angle board 4066 and slide rail 4068, be equipped with corner connecting piece 4063 between right-angle board 4062 and the U type fixed plate 4061, U type fixed plate 4061 is through pivot 4064 hub connection, rolling pulley 4065 is fixed in the lower extreme of board 4062, right-angle board 4062 is towards opening 407 and building hole 10 direction arrange correspond with the back-fire relief module 4067 of track commodity circulation transmission mechanism 80 and concave-convex body, the both sides of building hole 10 are respectively according to first shutoff board 40, second shutoff board 50, the overlapping structure of third shutoff board 60 arranges. The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an overlap dead weight slip back-fire relief mechanism's automatic fire prevention plugging device which characterized in that includes:

a building aperture (10);

the building hole is characterized in that track fixing plates (20) are symmetrically arranged on two sides of the building hole (10), the track fixing plates (20) are respectively provided with a first track (201), a second track (202) and a third track (203) towards the symmetrical direction of the building hole (10), a first plugging plate (40) is embedded between the two first tracks (201), a second plugging plate (50) is arranged between the two second tracks (202), a third plugging plate (60) is arranged between the two third tracks (203), two ends above the first plugging plate (40), the second plugging plate (50) and the third plugging plate (60) are respectively provided with a steel wire rope lock catch (304), and the outer sides of the upper ends and the outer sides of the lower ends of two sides of the first plugging plate (40), the second plugging plate (50) and the third plugging plate (60) are respectively provided with a first plugging plate uplink limiting block (401), a second plugging plate uplink limiting block (501), a third plugging plate uplink limiting block (601), a first plugging plate downlink limiting block (402), a second plugging plate downlink limiting block (502) and a third plugging plate downlink limiting block (602);

a fireproof plate (70) is embedded in the first blocking plate (40), the second blocking plate (50) and the third blocking plate (60);

the outer wall of the first plugging plate (40) is provided with a first plugging plate lifting wheel (403), a first plugging plate running guide wheel (404) and a first plugging plate running guide wheel adjusting spring (405);

a second plugging plate running guide wheel (503) and a second plugging plate running guide wheel adjusting spring (504) are arranged on the outer wall of the second plugging plate (50);

a third plugging plate running guide wheel (603) and a third plugging plate running guide wheel adjusting spring (604) are arranged on the outer wall of the third plugging plate (60);

first track (201), second track (202), third track (203) are equipped with left upper plate (204), right upper plate (206), left hypoplastron (205), right hypoplastron (207) towards building hole (10) outside upper end and lower extreme respectively, left upper plate (204) and right upper plate (206), be equipped with first leading wheel (2011), second leading wheel (2021), third leading wheel (2031) respectively above the outer wall of first track (201), second track (202), third track (203), be equipped with first balancing weight slide rail (208), second balancing weight slide rail (209), third balancing weight slide rail (210) respectively between left upper plate (204) and left hypoplastron (205), be equipped with first balancing weight slide rail (208), second balancing weight slide rail (209), third balancing weight slide rail (210) respectively between right upper plate (206) and right hypoplastron (207), balancing weight (211) sliding connection respectively in the outer wall department of first balancing weight slide rail (208), second balancing weight slide rail (209), third balancing weight slide rail (210).

2. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as defined in claim 1, wherein: the balancing weight (211) is composed of a plurality of groups of thin sheets, a hole is formed in the center of the balancing weight, a balancing weight bolt (2111) penetrates through the hole in the center of the balancing weight (211), the bottom of the balancing weight bolt is fixed by a balancing weight bolt adjusting nut (2112), and the top of the balancing weight bolt is hinged with a balancing weight running wheel (2113).

3. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as defined in claim 2, wherein: the outer walls of the left upper plate (204) and the right upper plate (206) are respectively and correspondingly rotated to be inserted with a first guide wheel (2011), a second guide wheel (2021) and a third guide wheel (2031), and holes for passing through a steel wire rope (3041) are correspondingly arranged below the first guide wheel (2011), the second guide wheel (2021) and the third guide wheel (2031).

4. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as claimed in claim 3, wherein: the base (30) is fixed on a wall surface (101), a motor (301), a V-shaped driving wheel (302), a steel wire rope lock catch (304) and a control system (305) are arranged above the base (30), a directional guide wheel (303) is arranged below the base (30), a passing hole is formed below the V-shaped driving wheel (302) of the base (30) and used for passing a steel wire rope (3041), the motor (301) is connected with the V-shaped driving wheel (302) in a shaft coupling mode through a shaft coupling (3011), the steel wire rope lock catch (304) is embedded in one end of the steel wire rope (3041), one end of the steel wire rope (3041) downwards rounds a first plugging plate lifting wheel (403) and upwards hangs at the inner wall of the V-shaped driving wheel (302), and one end of the steel wire rope (3041) downwards rounds a directional guide wheel (303) and leads to a first guide wheel (2011) above a right upper plate (206) and downwards rounds a counterweight running wheel (2113) and upwards hangs at the steel wire rope lock catch (304) on the right upper plate (206).

5. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as defined in claim 4, wherein: the two ends above the second blocking plate (50) and the third blocking plate (60) are respectively arranged on the outer wall of the steel wire rope lock catch (304).

6. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as defined in claim 5, wherein: and steel wire ropes (3041) are led out from the steel wire rope lock catches (304) on the two sides of the second plugging plate (50) respectively and are wound on the left and right second guide wheels (2021) downwards, then bypass the counterweight block running wheel (2113) and are hung upwards on the steel wire rope lock catches (304) of the left upper plate (204) and the right upper plate (206) respectively for locking.

7. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as defined in claim 6, wherein: and steel wire ropes (3041) are led out from the steel wire rope lock catches (304) at the two ends above the third plugging plate (60) respectively and are wound on left and right third guide wheels (2031) downwards and then are hung upwards around a counterweight block running wheel (2113) to be respectively connected to the steel wire rope lock catches (304) of the left upper plate (204) and the right upper plate (206) in a hanging mode and locked.

8. An automatic fire blocking device for an overlapping deadweight sliding firestop mechanism as defined in claim 7, wherein: opening (407) have been seted up to track commodity circulation transmission device (80) structure that first shutoff board (40) below corresponds, the both sides of opening (407) are provided with symmetrical combination dead weight respectively and slide back-fire relief mechanism (406), the outer wall of first shutoff board (40) is provided with burglar alarm module (90), starts burglar alarm when being opened under abnormal condition.

9. An automatic fire blocking device for an overlapping dead weight sliding firestop mechanism as claimed in claim 8, wherein: when the first plugging plate (40), the second plugging plate (50) and the third plugging plate (60) are closed, the wall surface (101) is of a trapezoidal wall surface (102) structure.

10. An automatic fire blocking device for an overlapping dead weight sliding firestop mechanism as claimed in claim 9, wherein: symmetrical combination dead weight slip back-fire relief mechanism (406) is provided with U type fixed plate (4061) of corresponding direction about a pair of, the outside of U type fixed plate (4061) is equipped with slider right angle board (4066) and slide rail (4068), be equipped with corner connecting piece (4063) between right angle board (4062) and U type fixed plate (4061), U type fixed plate (4061) is through pivot (4064) coupling, and roll pulley (4065) are fixed in right angle board (4062) lower extreme, right angle board (4062) are arranged corresponding and back-fire module (4067) of track commodity circulation transmission mechanism (80) and concave convex shape body towards opening (407) and building hole (10) direction, the both sides of building hole (10) are arranged according to first closure plate (40), second closure plate (50), third closure plate (60) overlap structure respectively.

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