CN111810035A

CN111810035A - Improved fire-fighting fireproof door convenient to open and close

Info

Publication number: CN111810035A
Application number: CN202010674543.7A
Authority: CN
Inventors: 王春峰
Original assignee: Shaoxing Jiadun Fire Equipment Co ltd
Current assignee: Shaoxing Jiadun Fire Equipment Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2020-10-23

Abstract

The invention discloses an improved fire-fighting fireproof door convenient to open and close, which comprises a door frame, wherein a movable door is arranged on the door frame, and a door closer is connected between the movable door and the door frame. According to the improved fire-fighting fireproof door convenient to open and close, the guide structure can form certain support and guide, the opening and closing smoothness of the movable door is guaranteed, the movable door can be opened and closed conveniently, the elastic piece is adopted, the ball can be in contact with the ground constantly even in an uneven ground environment, the guide effect is guaranteed, the blocking structure can quickly descend and close a gap below the movable door, the sealing performance is improved, the smoke isolating effect is enhanced, the display board in the indicating structure can reflect light, a handle can be found quickly when a fire disaster happens in a power-off situation, people can be evacuated conveniently, the protecting structure is matched with the transparent glass for use, the observation effect is guaranteed, meanwhile, the protecting effect can be improved, and the practicability is enhanced.

Description

Improved fire-fighting fireproof door convenient to open and close

Technical Field

The invention relates to the field of fire fighting, in particular to an improved fire-fighting fireproof door convenient to open and close.

Background

The 'fire fighting' is the general term for eliminating hidden dangers and preventing disasters (i.e. preventing and solving human, natural and accidental disasters in the life, work and learning process of people). The fire-fighting and fire-proof door is a door which can meet the requirements of fire-resistant stability, integrity and heat insulation within a certain time. It is a fire-proof partition with certain fire resistance, which is arranged in fire-proof subareas, evacuation staircases, vertical shafts and the like. The fireproof door has the functions of a common door, also has the functions of preventing the spread of fire and the diffusion of smoke, can prevent the spread of fire within a certain time, and ensures the evacuation of people; among the present fire door, the dodge gate utilizes hinge connection on the door frame, the effort that the hinge received is great, lead to whole fire door to have certain limitation when using, and prevent fire door installation back, certain gap can appear in the inevitable below, when the conflagration is released, although can effectual isolated intensity of a fire and flue gas, still there is some flue gas to permeate through the gap of below, make fire door's result of use general, among the current fire door, door handle department does not have the structure that is used for the instruction, under the condition that the conflagration appears, all be the outage usually, if at night, people can not find the handle immediately, be unfavorable for personnel's sparse, transparent glass simple structure on the dodge gate simultaneously, if the explosion condition appears in the conflagration, transparent glass can be broken to the explosive, thereby harm corresponding personnel's safety.

Disclosure of Invention

The invention mainly aims to provide an improved fire-fighting fireproof door convenient to open and close, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an improved generation makes things convenient for fire prevention door that disappears of switch, includes the door frame, be equipped with the dodge gate on the door frame, and be connected with the door closer between dodge gate and the door frame, two the lower extreme of dodge gate is close to each other's position department fixed mounting has guide structure, and guide structure includes mounting groove, mounting hole, installation piece, counter bore, countersunk screw, elastic component and ball, the lower extreme position department of dodge gate is provided with the structure that blocks that can adjust, and fixed mounting has the locking closure on the dodge gate, be provided with the handle on the locking closure, and the locking closure is gone up the below position department fixed mounting who lies in the handle and is instructed the structure, the quad slit has been seted up to the upper end position department of dodge gate, and lie in the quad slit on the dodge gate and be equipped with transparent glass.

Preferably, the movable door is fixedly provided with a hinge, the hinge is connected to the door frame, the movable door is movably arranged on the door frame through the hinge, and two door locks are arranged between the movable doors.

Preferably, the mounting groove is arranged on the movable door, the mounting hole is arranged in the mounting groove on the movable door, the counter bore is arranged on the mounting block, the countersunk head screw is arranged in the counter bore, the tail end of the countersunk head screw is connected with the mounting hole, the elastic piece is fixed on the lower surface of the mounting block, and the ball is arranged on the elastic piece.

Preferably, the mounting block is arranged in the mounting groove, the tail end of the countersunk screw is in threaded connection with the mounting hole, and the mounting block is fixed in the mounting groove of the movable door through the countersunk screw.

Preferably, the elastic component includes fixed block, ring channel, dead lever, connecting block, annular cover and spring, the ring channel is seted up on the fixed block, the dead lever is fixed in the lower surface intermediate position department of fixed block, the annular cover is fixed in on the connecting block, and the upper end of annular cover sets up in the ring channel, on the dead lever was located to the spring housing, and on the upper end of spring was fixed in the fixed block, the lower extreme of spring was fixed in on the connecting block.

Preferably, the blocking structure comprises a sliding rail, a sliding block, a connecting plate, a blocking pad, a square block, a fixing part and a mounting plate, the sliding rail is fixed on the movable door, the sliding block is arranged on the sliding rail in a sliding mode, the connecting plate is connected to the lower end of the sliding block, the blocking pad is fixed on the lower surface of the connecting plate, the square block is arranged on the movable door, and the fixing part is connected between the sliding block and the square block.

Preferably, the mounting plate is fixed on the sliding block, a screw is arranged between the mounting plate and the connecting plate, and the connecting plate is fixed on the sliding block through the screw and the mounting plate.

Preferably, the mounting includes circular slot, roating seat, connecting rod, pivot, disk and action bars, the circular slot is seted up on square piece, the roating seat is fixed in on the slider, be equipped with the pivot between connecting rod and the roating seat, and the connecting rod rotates between through pivot and the roating seat and be connected, the disk is fixed in the upper end inboard of connecting rod, and looks joint between disk and the circular slot, the action bars is fixed in the upper end outside of connecting rod.

Preferably, the indication structure comprises an assembly groove, a clamping groove, a display board and an elastic clamping block, the assembly groove is formed in the lock cover, the clamping groove is formed in the assembly groove in the lock cover, the elastic clamping block is fixed on the display board and clamped with the clamping groove, and the elastic clamping block is composed of a small fixing block, an elastic block and a protrusion.

Preferably, protective structure includes screw hole, fixed frame, through-hole, construction bolt, protection network and presses the strip, the screw hole is seted up on the dodge gate, the through-hole is seted up on fixed frame, threaded connection between through-hole and the screw hole is passed to construction bolt's end, the protection network is fixed in on the fixed frame, set up in the inboard of fixed frame according to the strip.

Compared with the prior art, the invention has the following beneficial effects:

1. through the arranged guide structure, certain support and guide can be formed in the opening and closing process of the movable door, so that the opening and closing smoothness of the movable door can be ensured, and the movable door can be conveniently opened and closed;

2. the elastic piece is adopted in the guide structure, so that the balls can contact the ground at any time even in an uneven ground environment, and the guide effect is guaranteed;

3. through the arranged blocking structure, when a fire disaster occurs, the movable door is fixed by the fixing piece, so that the opening and closing of the movable door are not influenced, and when the fire disaster occurs, a gap below the closed movable door can be quickly lowered, so that the sealing effect is improved;

4. by adopting the indicating structure, the display board in the indicating structure can reflect light, so that a fire can quickly find the handle under the condition of power failure temporarily, and people can be evacuated conveniently;

5. through the protective structure who sets up, cooperating transparent glass and using, both guaranteed the observation effect, can improve protective effect again simultaneously, strengthened the practicality.

Drawings

FIG. 1 is a schematic view of an improved fire rated door with a convenient switch according to the present invention;

FIG. 2 is a schematic view of an improved fire rated door guide structure that facilitates opening and closing according to the present invention;

FIG. 3 is a schematic view of an improved easy-to-open fire door elastic member according to the present invention;

FIG. 4 is a schematic view of a fire rated door stopping structure of the present invention with an improved convenient switch;

FIG. 5 is a schematic view of an improved easy-to-open fire rated door fastening of the present invention;

FIG. 6 is a schematic view of an improved fire rated door indicating structure that facilitates opening and closing according to the present invention;

fig. 7 is a schematic structural view of an improved fire-fighting fire door protection structure convenient to open and close.

In the figure: 1. a door frame; 2. a movable door; 3. a door closer; 4. a guide structure; 401. mounting grooves; 402. mounting holes; 403. mounting blocks; 404. a counter bore; 405. countersunk head screws; 406. an elastic member; 4061. a fixed block; 4062. an annular groove; 4063. fixing the rod; 4064. connecting blocks; 4065. an annular sleeve; 4066. a spring; 407. a ball bearing; 5. a barrier structure; 501. a slide rail; 502. a slider; 503. a connecting plate; 504. a barrier pad; 505. a square block; 506. a fixing member; 5061. a circular groove; 5062. a rotating base; 5063. a connecting rod; 5064. a rotating shaft; 5065. a round block; 5066. an operating lever; 507. mounting a plate; 6. a locking cover; 7. a handle; 8. an indicating structure; 801. assembling a groove; 802. a card slot; 803. a display board; 804. an elastic clamping block; 9. a protective structure; 901. a threaded hole; 902. a fixing frame; 903. a through hole; 904. installing a bolt; 905. a protective net; 906. pressing the pressing strip; 10. a hinge; 11. a square hole; 12. and (4) transparent glass.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-7, an improved fire-fighting fireproof door with convenient opening and closing comprises a door frame 1, a movable door 2 arranged on the door frame 1, and a door closer 3 is connected between the movable door 2 and the door frame 1, a guiding structure 4 is fixedly arranged at the position where the lower ends of the two movable doors 2 are close to each other, and the guide structure 4 includes a mounting groove 401, a mounting hole 402, a mounting block 403, a counter bore 404, a counter head screw 405, an elastic member 406 and a ball 407, the lower end position of the movable door 2 is provided with an adjustable blocking structure 5, a lock cover 6 is fixedly arranged on the movable door 2, a handle 7 is arranged on the lock cover 6, an indicating structure 8 is fixedly arranged at the position of the lock cover 6 below the handle 7, a square hole 11 is arranged at the upper end of the movable door 2, transparent glass 12 is arranged in the square hole 11 on the movable door 2, and a protective structure 9 is fixedly arranged at the position of the transparent glass 12 on the movable door 2;

the movable door 2 is fixedly provided with a hinge 10, the hinge 10 is connected to the door frame 1, the movable door 2 is movably arranged on the door frame 1 through the hinge 10, and a door lock is arranged between the two movable doors 2; the mounting groove 401 is arranged on the movable door 2, the mounting hole 402 is arranged in the mounting groove 401 on the movable door 2, the counter bore 404 is arranged on the mounting block 403, the counter bore screw 405 is arranged in the counter bore 404, the tail end of the counter bore screw 405 is connected with the mounting hole 402, the elastic element 406 is fixed on the lower surface of the mounting block 403, and the ball 407 is arranged on the elastic element 406; the mounting block 403 is arranged in the mounting groove 401, the tail end of the countersunk screw 405 is in threaded connection with the mounting hole 402, and the mounting block 403 is fixed in the mounting groove 401 on the movable door 2 through the countersunk screw 405; the elastic part 406 comprises a fixing block 4061, an annular groove 4062, a fixing rod 4063, a connecting block 4064, an annular sleeve 4065 and a spring 4066, the annular groove 4062 is arranged on the fixing block 4061, the fixing rod 4063 is fixed at the middle position of the lower surface of the fixing block 4061, the annular sleeve 4065 is fixed on the connecting block 4064, the upper end of the annular sleeve 4065 is arranged in the annular groove 4062, the spring 4066 is sleeved on the fixing rod 4063, the upper end of the spring 4066 is fixed on the fixing block 4061, and the lower end of the spring 4066 is fixed on the connecting block 4064; through the arranged guide structure 4, certain support and guide can be formed in the opening and closing process of the movable door 2, the opening and closing smoothness of the movable door 2 is guaranteed, the opening and closing of the movable door 2 are facilitated, and the elastic piece 406 is adopted in the guide structure 4, so that the ball 407 can contact the ground at any time even in an uneven ground environment, and the guide effect is guaranteed; the blocking structure 5 comprises a sliding rail 501, a sliding block 502, a connecting plate 503, a blocking pad 504, a square block 505, a fixing piece 506 and a mounting plate 507, wherein the sliding rail 501 is fixed on the movable door 2, the sliding block 502 is arranged on the sliding rail 501 in a sliding manner, the connecting plate 503 is connected to the lower end of the sliding block 502, the blocking pad 504 is fixed on the lower surface of the connecting plate 503, the square block 505 is arranged on the movable door 2, and the fixing piece 506 is connected between the sliding block 502 and the square block 505; the mounting plate 507 is fixed on the sliding block 502, a screw is arranged between the mounting plate 507 and the connecting plate 503, and the connecting plate 503 is fixed on the sliding block 502 through the screw and the mounting plate 507; the fixing part 506 comprises a circular groove 5061, a rotating seat 5062, a connecting rod 5063, a rotating shaft 5064, a circular block 5065 and an operating rod 5066, the circular groove 5061 is arranged on the square block 505, the rotating seat 5062 is fixed on the sliding block 502, the rotating shaft 5064 is arranged between the connecting rod 5063 and the rotating seat 5062, the connecting rod 5063 is rotatably connected with the rotating seat 5062 through the rotating shaft 5064, the circular block 5065 is fixed on the inner side of the upper end of the connecting rod 5063, the circular block 5065 is clamped with the circular groove 5061, and the operating rod 5066 is fixed on the outer side of the upper end of the connecting rod 5063; through the blocking structure 5, when a fire disaster does not happen, the fixing part 506 is used for fixing, the opening and closing of the movable door 2 can not be influenced, and when the fire disaster happens, a gap below the movable door 2 can be quickly closed down, so that the sealing effect is improved; the indicating structure 8 comprises an assembling groove 801, a clamping groove 802, a display board 803 and an elastic clamping block 804, wherein the assembling groove 801 is arranged on the lock cover 6, the clamping groove 802 is arranged in the assembling groove 801 on the lock cover 6, the elastic clamping block 804 is fixed on the display board 803, the elastic clamping block 804 is clamped with the clamping groove 802, and the elastic clamping block 804 consists of a small fixing block, an elastic block and a protrusion; the display board 803 in the indicating structure 8 can reflect light, so that a fire can quickly find the handle 7 in case of power failure temporarily, thereby facilitating the evacuation of people; the protective structure 9 comprises a threaded hole 901, a fixed frame 902, a through hole 903, a mounting bolt 904, a protective net 905 and a pressing strip 906, wherein the threaded hole 901 is formed in the movable door 2, the through hole 903 is formed in the fixed frame 902, the tail end of the mounting bolt 904 penetrates through the through hole 903 and is in threaded connection with the threaded hole 901, the protective net 905 is fixed on the fixed frame 902, and the pressing strip 906 is arranged on the inner side of the fixed frame 902; through the protective structure 9 who sets up, cooperating transparent glass 12 and using, both guaranteed the observation effect, can improve protective effect again simultaneously, strengthened the practicality.

It should be noted that, the invention is an improved fire-fighting fireproof door convenient to open and close, when in use, the door frame 1 is installed at the position of a fire-fighting passage where a fire-fighting door needs to be installed, the movable door 2 is installed on the door frame 1 by using the hinge 10, then the door closer 3 is installed between the door frame 1 and the movable door 2, after the installation of the movable door 2, the door closer 3 and other structures is completed, a worker lines the installation groove 401 in the guide structure 4 according to the height of the gap below the movable door 2 at the moment, an installation hole 402 is opened at the line-marking position, then the installation block 403, the elastic piece 406 and other structures are clamped into the installation groove 401 to ensure that the counter bore 404 is aligned with the installation hole 402, the counter bore screw 405 is inserted into the counter bore 404, so that the tail end of the counter bore screw 405 is in threaded connection with the installation hole 402, thereby fixing the whole guide structure 4, at the moment, the elastic piece 406 contracts to have certain elasticity, after the guide structure 4 is installed, a worker starts to install the blocking structure 5, during installation, the sliding block 502 is clamped on the T-shaped sliding rail 501, the round block 5065 at the upper end of the connecting rod 5063 in the fixing piece 506 is clamped in the round groove 5061, so that the position of the sliding block 502 is ensured to be unchanged, then the connecting plate 503 with the blocking pad 504 is attached to the sliding block 502, the connecting plate 503 and the installing plate 507 are fixed through screws, so that the installation work of the whole blocking structure 5 is completed, then the protective structure 9 is installed, during installation, the fixing frame 902 with the protective net 905 is attached to the movable door 2, the pressing strip 906 is in contact with the transparent glass 12, then the installing bolt 904 is inserted into the through hole 903, the tail end of the installing bolt 904 is in threaded connection with the threaded hole 901, so that the protective structure 9 is fixed, then the worker clamps the display board 803 into the assembling groove 801, the elastic fixture block 804 on the display board 803 is inserted into the fixture groove 802, and then the display board 803 is fixed, the whole fireproof door can be used after the installation of the related structure is completed, in the using process, the fireproof door is in a normally closed state under the action of the door closer 3, meanwhile, the door lock is in an open state, when people need to pass through the fireproof door, a palm is held on the handle 7 at the lock cover 6, the movable lock cylinder is opened by rotating the handle 7, then the movable door 2 is pulled, the movable door 2 rotates on the door frame 1 around the hinge 10 until a certain gap is opened, people can pass through the gap, after people pass through the gap, under the action of the door closer 3, the movable door 2 returns to the initial position, in the process, the ball 407 in the guide structure 4 rolls along the ground, and then a certain supporting effect and a guiding effect are provided for the movable door 2, and the smoothness of the opening and closing, if an uneven ground is needed, the connecting block 4064 can drive the ball 407 to lift relative to the fixed block 4061, so that the annular sleeve 4065 can lift in the annular groove 4062, at the moment, the spring 4066 on the fixed rod 4063 can be compressed or stretched, and further, the ball 407 can be ensured to be contacted with the ground all the time, so that the whole guide structure 4 is stronger in use compatibility, the use effect is improved, a certain supporting effect is provided for the movable door 2 through the arranged guide structure 4, the whole fireproof door is more flexible and convenient to open and close, if a fire occurs, people can open the movable door 2 through the handle 7 and then enter a safety area through the fireproof door, in the process, due to possible power failure, people can only use a flashlight or a mobile phone, when the mobile phone irradiates on the display board 803 in the indicating structure 8, the display board 803 can reflect light back, therefore, people can find the position of the handle 7 at the first time, time is saved for people to escape, then people can step down the operating rod 5066 in the fixing piece 506 by feet, the operating rod 5066 generates acting force on the connecting rod 5063, the connecting rod 5063 rotates on the rotating seat 5062 around the rotating shaft 5064, so that the round block 5065 is moved out of the round groove 5061, at the moment, the square block 505 is not connected with the fixing piece 506 any longer, the sliding block 502 can drive the connecting plate 503, the blocking pad 504 and other structures to slide downwards along the sliding rail 501 until the blocking pad 504 is contacted with the ground, at the moment, the sealing performance of the fire door can be further improved through the blocking structure 5, the smoke blocking effect of the fire door is enhanced, the using effect of the fire door is enhanced, in the using process of the fire door, the protective net 905 in the protective structure 9 is matched with the transparent glass 12 for use, and people can conveniently observe through the movable, guarantee whole dodge gate 2's integrity again simultaneously, improved the safeguard effect, if when needing to change transparent glass 12, dismantle the construction bolt 904 on the fixed frame 902, take off fixed frame 902 isotructure, then change transparent glass 12, it can to change the fixed frame 902 isotructure of fixed the breathing out of construction of recycling construction bolt 904 after accomplishing, simple structure, it is nimble convenient that the operation is got up.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fire prevention door is prevented in fire control of improved generation convenience switch which characterized in that: comprises a door frame (1), a movable door (2) is arranged on the door frame (1), a door closer (3) is connected between the movable door (2) and the door frame (1), two guiding structures (4) are fixedly arranged at positions where the lower ends of the movable doors (2) are close to each other, each guiding structure (4) comprises a mounting groove (401), a mounting hole (402), a mounting block (403), a counter bore (404), a counter screw (405), an elastic piece (406) and a ball (407), a blocking structure (5) capable of being adjusted is arranged at the lower end position of each movable door (2), a lock cover (6) is fixedly arranged on each movable door (2), a handle (7) is arranged on each lock cover (6), an indicating structure (8) is fixedly arranged at the position below the handle (7) on each lock cover (6), a square hole (11) is formed at the upper end position of each movable door (2), and the movable door (2) is provided with transparent glass (12) in the square hole (11), and the protective structure (9) is fixedly arranged at the position of the transparent glass (12) on the movable door (2).

2. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: the movable door is characterized in that a hinge (10) is fixedly mounted on the movable door (2), the hinge (10) is connected to the door frame (1), the movable door (2) is movably arranged on the door frame (1) through the hinge (10), and a door lock is arranged between the movable door (2).

3. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: the mounting groove (401) is arranged on the movable door (2), the mounting hole (402) is arranged in the mounting groove (401) on the movable door (2), the counter bore (404) is arranged on the mounting block (403), the counter bore screw (405) is arranged in the counter bore (404), the tail end of the counter bore screw (405) is connected with the mounting hole (402), the elastic piece (406) is fixed on the lower surface of the mounting block (403), and the ball (407) is arranged on the elastic piece (406).

4. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: the mounting block (403) is arranged in the mounting groove (401), the tail end of the countersunk screw (405) is in threaded connection with the mounting hole (402), and the mounting block (403) is fixed in the mounting groove (401) on the movable door (2) through the countersunk screw (405).

5. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: elastic component (406) include fixed block (4061), ring channel (4062), dead lever (4063), connecting block (4064), annular cover (4065) and spring (4066), ring channel (4062) are seted up on fixed block (4061), dead lever (4063) are fixed in the lower surface intermediate position department of fixed block (4061), annular cover (4065) are fixed in on connecting block (4064), and the upper end of annular cover (4065) sets up in ring channel (4062), on dead lever (4063) is located to spring (4066) cover, and the upper end of spring (4066) is fixed in on fixed block (4061), and the lower extreme of spring (4066) is fixed in on connecting block (4064).

6. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: the blocking structure (5) comprises a sliding rail (501), a sliding block (502), a connecting plate (503), a blocking pad (504), a square block (505), a fixing piece (506) and a mounting plate (507), the sliding rail (501) is fixed on the movable door (2), the sliding block (502) is arranged on the sliding rail (501) in a sliding mode, the connecting plate (503) is connected to the lower end of the sliding block (502), the blocking pad (504) is fixed on the lower surface of the connecting plate (503), the square block (505) is arranged on the movable door (2), and the fixing piece (506) is connected between the sliding block (502) and the square block (505).

7. An improved fire rated door facilitating opening and closing as claimed in claim 6, wherein: the mounting plate (507) is fixed on the sliding block (502), a screw is arranged between the mounting plate (507) and the connecting plate (503), and the connecting plate (503) is fixed on the sliding block (502) through the screw and the mounting plate (507).

8. An improved fire rated door facilitating opening and closing as claimed in claim 6, wherein: fixing piece (506) include slot (5061), roating seat (5062), connecting rod (5063), pivot (5064), circle piece (5065) and action bars (5066), slot (5061) are seted up on square piece (505), roating seat (5062) are fixed in on slider (502), be equipped with pivot (5064) between connecting rod (5063) and roating seat (5062), and connecting rod (5063) rotate between through pivot (5064) and roating seat (5062) and be connected, circle piece (5065) are fixed in the upper end inboard of connecting rod (5063), and between circle piece (5065) and slot (5061) looks joint, action bars (5066) are fixed in the upper end outside of connecting rod (5063).

9. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: indicate structure (8) including assembly groove (801), draw-in groove (802), display board (803) and elasticity fixture block (804), assembly groove (801) are seted up on locking closure (6), draw-in groove (802) are seted up in assembly groove (801) on locking closure (6), elasticity fixture block (804) are fixed in on display board (803), and between elasticity fixture block (804) and draw-in groove (802) looks joint, elasticity fixture block (804) comprise fixed fritter, elastic block and protruding.

10. An improved fire-fighting fire door convenient to open and close according to claim 1, characterized in that: protective structure (9) include screw hole (901), fixed frame (902), through-hole (903), construction bolt (904), protection network (905) and press strip (906), screw hole (901) are seted up on dodge gate (2), through-hole (903) are seted up on fixed frame (902), threaded connection between through-hole (903) and screw hole (901) is passed to the end of construction bolt (904), protection network (905) are fixed in on fixed frame (902), press strip (906) to set up in the inboard of fixed frame (902).