Fireproof steel structure

Abstract

The invention discloses a fireproof steel structure which comprises a door body, a first steel plate and a second steel plate. The door body is provided with a first side door plate and a second side door plate. The rear end of the first moving plate is located in the door body, the front end of the first moving plate penetrates through the first through hole, the first moving plate is provided with a first side face, at least one first guide groove extending in the front-back direction is formed in the first moving plate, and all the first guide grooves are sunken towards the interior of the first moving plate from the first side face; the outer frame is a square frame, the door body is located in the outer frame, and a bottom frame plate of the outer frame is hinged to a bottom door plate of the door body; the outer frame is provided with a first side frame plate and a second side frame plate, and the first side frame plate is composed of a first plate body, a second plate body and a third plate body; the at least one first connecting rod is horizontally arranged, one end of each first connecting rod is located in the corresponding first guide groove, and the other end of each first connecting rod penetrates through the first side door plate and is fixedly connected with the second plate body. The device is simple in structure and easy to operate.

Description

Technical Field

[0001] The present invention relates to the field of steel structures, and more particularly to fireproof steel structures. Background Art

[0002] Steel structure is a structure made of steel materials. However, due to the poor fire resistance of steel structure, its mechanical properties such as tensile strength and yield strength will greatly decrease with the rise of temperature. In the event of a fire, the existing steel structure door is easily deformed by the high temperature, causing the door or door frame to be unable to open after deformation, thus affecting escape and causing low safety.

[0003] Existing fireproof steel structure doors, such as the fireproof steel structure door disclosed in Chinese patent application No. 201910786401.7, when the door frame is deformed by high temperature, the first hand wheel is turned to drive the threaded rod to rotate, so that the threaded rod moves outward, so that the threaded rod drives the conical block to disengage from the insertion rod, and the insertion rod retracts into the protrusion under the push of the spring, so that the insertion rod is no longer inserted into the groove, and then the second hand wheel is rotated to drive the second cylinder to rotate, so that the protrusion no longer interferes with the support rod. After the support rod loses the interference of the protrusion, the first rod body and the second rod body can move freely, so that the first rod body and the second rod body can move within a certain range, thereby reducing the fit tightness with the door frame, making it convenient for people to open the door, thereby improving the safety of escape; but its structure is more complicated and the operation is also more complicated. Summary of the invention

[0004] The purpose of the present invention is to provide a fireproof steel structure, which is a fireproof steel structure door. By arranging an outer frame outside the door body, when a fire occurs, it is only necessary to move the first movable plate forward in a direction perpendicular to the door body, and then move the first connecting rod toward the first movable plate, so that the second plate body can be separated from the first plate body and the third plate body, and then the door body can be rotated forward or backward relative to the outer frame, or the bottom frame plate of the outer frame can be separated from the bottom door plate of the door body, so that the door body can be opened or removed. The structure is simple and the operation is also simple.

[0005] In order to achieve these objects and other advantages of the present invention, there is provided a fireproof steel structure comprising: The door body is in the shape of a rectangular parallelepiped with a hollow interior, and a first through hole communicating with the interior of the door body is provided on the front panel of the door body; the door body has a first side door panel and a second side door panel; A first movable plate is vertically arranged, and the size of the cross section at each location thereof is the same as the size of the first through hole, the rear end of the first movable plate is located inside the door body, and the front end passes through the first through hole, the first movable plate has a first side surface, the first side surface is opposite to and parallel to the first side door plate, and the first movable plate is provided with at least one first guide groove extending in the front-to-back direction and penetrating the front end and the rear end of the first movable plate, and each first guide groove is recessed from the first side surface toward the inside of the first movable plate; The outer frame is a square frame, the door body is located inside the outer frame, the bottom frame plate of the outer frame is hinged to the bottom door plate of the door body, and the door body can rotate forward or backward relative to the outer frame, or the bottom frame plate of the outer frame is detachably connected to the bottom door plate of the door body; the outer frame has a first side frame plate and a second side frame plate, the first side frame plate, the second side frame plate, and the top frame plate of the outer frame are respectively opposite to the first side door plate, the second side door plate, and the top door plate of the door body, and are separated by a certain distance; the first side frame plate is composed of a first plate body, a second plate body, and a third plate body arranged from top to bottom, and a first connecting block is respectively arranged on the top and bottom of the second plate body, The two first connection blocks are both located between the first side door plate and the first side frame plate, and are separated from the first side door plate by a certain distance, and are respectively against the inner side of the bottom of the first plate body and the inner side of the top of the third plate body, and each first connection block is provided with at least one first plug block or at least one first slot; the first plate body and the third plate body are respectively provided with at least one first slot or at least one first plug block, one first plug block corresponds to one first slot, and each first plug block is horizontally inserted into the first slot corresponding thereto; a hinge is respectively provided on the outer side of the first plate body and the third plate body, and a door lock installation area is provided on the second side frame plate; At least one first connecting rod is horizontally arranged, and one first guide groove corresponds to one first connecting rod. One end of each first connecting rod is located in the first guide groove corresponding thereto, and the other end passes through the first side door panel and is fixedly connected to the second plate body. When the first movable plate moves forward in a direction perpendicular to the door body under the action of external force, each first movable plate can move respectively relative to one end of the first connecting rod corresponding thereto, and can move until the first movable plate is separated from the first connecting rod. After the first connecting rod is separated from the first movable plate, the second plate body can move toward the first side door panel until each first plug block is disengaged from the first slot corresponding thereto, and at this time, the second plate body is in contact with or separated by a certain distance from the first side door panel.

[0006] Preferably, in the fireproof steel structure, the depth of each first guide groove gradually becomes deeper from front to back, there are two first guide grooves and two first slots, and the door body can rotate backward relative to the outer frame.

[0007] Preferably, the fireproof steel structure further comprises: A first partition plate is parallel to the first side door plate and is located between the first movable plate and the first side door plate. The first partition plate is fixedly connected to the top door plate, the bottom door plate, and the front panel and the rear panel of the door body. Each first connecting rod passes through the first partition plate. A plurality of first fixing blocks, which are fixed on the first connecting rod and are located between the first partition plate and the first side door plate; At least one first spring, each first connecting rod is sleeved with a first spring, each first spring is respectively located between the first fixing block and the first side door plate corresponding thereto, and respectively abuts against the first fixing block and the first side door plate and is in a compressed state; At least one second spring is sleeved on each first connecting rod, each second spring is respectively located between the first fixed block and the first partition corresponding thereto, and is respectively fixedly connected to the first fixed block and the first partition, and is in a stretched state.

[0008] Preferably, in the fireproof steel structure, there are two first connecting rods, which are symmetrically arranged relative to the center of the second plate body.

[0009] Preferably, in the fireproof steel structure, the top frame plate is composed of a fourth plate body, a fifth plate body and a sixth plate body, the fifth plate body is located between the fourth plate body and the sixth plate body, and a second connecting block is respectively provided at both ends of the fifth plate body, the two second connecting blocks are both located between the top frame plate and the top door plate, and are separated from the top door plate by a certain distance, and are respectively abutted against the bottom of the fourth plate body and the sixth plate body, each second connecting block is provided with at least one second plug block, the fourth plate body and the sixth plate body are respectively provided with at least one second slot, one second plug block corresponds to one second slot, and each second plug block is respectively vertically inserted into the second slot corresponding thereto; The front panel of the door body is provided with a second through hole communicating with the interior of the door body, and the height of the top door panel is higher than the height of the second panel; The fireproof steel structure also includes: The second movable plate is horizontally arranged, and the size of the cross section at each location thereof is the same as the size of the second through hole. The rear end of the second movable plate is located inside the door body, and the front end passes through the second through hole. The second movable plate has a second side surface, and the second side surface is opposite to and parallel to the top door plate. The second movable plate is provided with at least one second guide groove extending in the front-to-back direction and passing through the front and rear ends of the second movable plate. Each second guide groove is recessed from the top surface of the second movable plate toward the inside of the second movable plate, and the depth of each second guide groove gradually increases from front to back. A second partition plate is parallel to the top door plate, is located between the second movable plate and the top door plate, and intersects with the first partition plate. The second partition plate is fixedly connected to the first side door plate and the second side door plate, as well as the front panel and the rear panel of the door body; At least one second connecting rod is vertically arranged, one second guide groove corresponds to one second connecting rod, one end of each second connecting rod is located in the second guide groove corresponding thereto, and the other end passes through the second partition plate and the top door plate in sequence, and is fixedly connected to the fifth plate body; when the second movable plate moves forward in a direction perpendicular to the door body under the action of an external force, each second movable plate can move relative to one end of the second connecting rod corresponding thereto, and can move until the second movable plate is separated from the second connecting rod; when the second movable plate is separated from the second connecting rod, the fifth plate body can move toward the top door plate until each second plug block is separated from the second slot corresponding thereto, and at this time, the fifth plate body is in contact with or separated from the top door plate by a certain distance; A plurality of second fixing blocks, which are fixed on the second connecting rod and are located between the second partition plate and the top door plate; At least one third spring, each second connecting rod is sleeved with a third spring, each third spring is respectively located between the first fixing block and the top door plate corresponding thereto, and is respectively against the first fixing block and the top door plate and is in a compressed state; At least one fourth spring is provided on each second connecting rod, each fourth spring is respectively located between the corresponding second fixing block and the second partition plate, and is respectively fixedly connected to the second fixing block and the second partition plate, and is in a stretched state.

[0010] Preferably, in the fireproof steel structure, there are two second connecting rods, which are symmetrically arranged relative to the center of the fifth plate body.

[0011] Preferably, in the fireproof steel structure, a third through hole communicating with the interior of the door body is provided on the front panel of the door body; a plurality of third slots are provided at intervals on the inner side of the second side frame plate; The fireproof steel structure also includes: The third movable plate is vertically arranged, and the size of the cross section at each location thereof is the same as the size of the third through hole. The rear end of the third movable plate is located inside the door body, and the front end passes through the third through hole. The third movable plate has a third side surface, and the third side surface is opposite to and parallel to the second side door plate. The third movable plate is provided with at least one third guide groove extending in the front-to-back direction and passing through the front and rear ends of the third movable plate. Each third guide groove is recessed from the third side surface toward the inside of the third movable plate, and the depth of each third guide groove gradually becomes deeper from front to back; A third partition plate is parallel to the second side door plate and is located between the third movable plate and the second side door plate. The third partition plate is fixedly connected to the top door plate, the bottom door plate, and the front panel and the rear panel of the door body; At least one third connecting rod is horizontally arranged, one third connecting rod corresponds to a third guide groove and a third slot, one end of each third connecting rod is located in the third guide groove corresponding thereto, and the other end passes through the third partition plate and the second side door plate in sequence, and is inserted into the third slot corresponding thereto; when the third movable plate moves forward in a direction perpendicular to the door body under the action of an external force, each third movable plate can move respectively relative to one end of the third connecting rod corresponding thereto, and can move until the third movable plate is separated from the third connecting rod; when the third movable plate is separated from the third connecting rod, the third connecting rod can move toward the direction where the first side door plate is located until the other end of the third connecting rod is separated from the third slot; A plurality of third fixing blocks, which are fixed on the third connecting rod and are located between the third partition plate and the second side door plate; At least one fifth spring, each third connecting rod is sleeved with a fifth spring, each fifth spring is respectively located between the corresponding third fixing block and the second side door plate, and respectively abuts against the third fixing block and the second side door plate, and is in a compressed state; At least one sixth spring is provided on each third connecting rod, each sixth spring is respectively located between the corresponding third fixing block and the third partition plate, and is respectively fixedly connected to the third fixing block and the third partition plate and is in a stretched state.

[0012] Preferably, in the fireproof steel structure, there are two third connecting rods, which are symmetrically arranged relative to the center of the second side door panel.

[0013] Preferably, the fireproof steel structure further comprises: Two splicing plates are used to fill the area between the front panel and the outer frame, and the area between the rear panel and the outer frame respectively.

[0014] Preferably, in the fireproof steel structure, the first movable plate, the second movable plate and the third movable plate are all rectangular and are detachably connected to the front panel, respectively, and handles are provided at the front end of the first movable plate, the front end of the second movable plate and the front end of the third movable plate, and three guide rods are fixed on the rear panel, each guide rod is perpendicular to the rear panel and is inserted into the rear end of the first movable plate, the rear end of the second movable plate and the rear end of the third movable plate, respectively.

[0015] The present invention has at least the following beneficial effects: The present invention arranges an outer frame outside the door body. When a fire occurs, the first movable plate only needs to be moved forward in a direction perpendicular to the door body, and then the first connecting rod is moved toward the first movable plate to separate the second plate body from the first plate body and the third plate body. Then, the door body is rotated forward or backward relative to the outer frame, or the bottom frame plate of the outer frame is separated from the bottom door plate of the door body, so that the door body can be opened or removed. The structure is simple and the operation is also simple.

[0016] The present invention provides a first partition, a first fixed block, a first spring, and a second spring. When the first connecting blocks at the top and bottom of the second plate body respectively abut against the inner side of the bottom of the first plate body and the inner side of the top of the third plate body, the first spring is in a compressed state and the second spring is in a stretched state. When the first movable plate is moved forward in a direction perpendicular to the door body, the second plate body can be quickly separated from the first plate body and the third plate body, so that the door body can be rotated or removed from the outer frame, which is conducive to rapid escape. Similarly, by providing a second partition, a second fixed block, a third spring, and a fourth spring, when the second connecting blocks at both ends of the fifth plate body respectively abut against the bottom of the fourth plate body and the bottom of the sixth plate body, the third spring is in a compressed state and the fourth spring is in a stretched state. When the second movable plate is moved forward in a direction perpendicular to the door body, the fifth plate body can be quickly separated from the fourth plate body and the sixth plate body. And by providing the third partition plate, the third fixed block, the fifth spring and the sixth spring, when the two ends of the third connecting rod respectively abut against the third movable plate and the second side frame plate, the fifth spring is in a compressed state and the sixth spring is in a stretched state, so that when the third movable plate is moved forward in a direction perpendicular to the door body, the third connecting rod can be quickly separated from the second side frame plate. In this way, the door body can be rotated or removed from the outer frame, which is conducive to rapid escape.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a fireproof steel structure according to an embodiment of the present invention; Figure 2 Schematic diagram of a fireproof steel structure according to another embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0020] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1 and Figure 2 As shown, the present invention provides a fireproof steel structure, comprising: The door body 1 is a rectangular parallelepiped with a hollow interior, that is, the door body 1 is a hollow structure, and a first through hole connected to the interior of the door body 1 is provided on the front panel of the door body 1; the door body 1 has a first side door panel 101 and a second side door panel 102; if the door body 1 is a room door and a person is in a bedroom, the front panel faces the person.

[0022] The first movable plate 2 is vertically arranged, and the size of the cross section at each location thereof is the same as the size of the first through hole. The rear end (one end) of the first movable plate 2 is located inside the door body 1 and does not pass through the rear panel of the door body 1. The front end (the other end) passes through the first through hole. The first movable plate 2 has a first side surface, which is opposite to and parallel to the first side door panel 101. The first movable plate 2 is provided with at least one longitudinal direction (such as Figure 1 The first guide grooves extend in the front-to-rear direction (as shown in the figure) and penetrate the front and rear ends of the first movable plate 2, and each first guide groove is recessed from the first side toward the interior of the first movable plate 2, and the depth direction of the first guide grooves is the horizontal direction; in order to allow the first movable plate 2 to be pulled out when it is needed, and to be stably inserted into the first through hole when it is not needed, and to have its rear end located inside the door body 1, a detachable (tear-off) protective cover may be provided on the front panel of the door body 1 to cover the first movable plate 2.

[0023] The outer frame 3 is a square frame, the door body 1 is located in the outer frame 3, the bottom frame plate 34 of the outer frame 3 is hinged to the bottom door plate 104 of the door body 1, and the door body 1 can rotate forward or backward relative to the outer frame 3, or the bottom frame plate 34 of the outer frame 3 is detachably connected to the bottom door plate 104 of the door body 1, for example, a plurality of mounting grooves are arranged on the bottom frame plate 34, and a plurality of mounting blocks are arranged at the bottom of the door body 1, one mounting block corresponds to one mounting groove, and each mounting block is respectively inserted into the mounting groove corresponding thereto; the outer frame 3 has a first side frame plate 31 and a second side frame plate 32. The second side frame plate 32, the first side frame plate 31, the second side frame plate 32, and the top frame plate 33 of the outer frame 3 are respectively opposite to the first side door plate 101, the second side door plate 102, and the top door plate 103 of the door body 1, and are separated by a certain distance. The distance cannot be too small, so that when the outer frame 3 is deformed, the impact on the door body 1 is small, and the distance cannot be too large, so that the door can play a protective role; the first side frame plate 31 is composed of a first plate body 311, a second plate body 312 and a third plate body 313 arranged from top to bottom, and the top and bottom of the second plate body 312 are respectively provided with A first connecting block 3121, the two first connecting blocks 3121 are both located between the first side door panel 101 and the first side frame panel 31, and are spaced a certain distance from the first side door panel 101, and are respectively against the inner side of the bottom of the first plate body 311 and the inner side of the top of the third plate body 313, each of the first connecting blocks 3121 is provided with at least one first plug block, and the first plate body 311 and the third plate body 313 are respectively provided with at least one first slot, or each of the first connecting blocks 3121 is provided with at least one first slot, and the first plate body 311 At least one first plug-in block is respectively provided on the first connecting block 3121 and the third plate 313, that is, a first slot is provided on the first connecting block 3121, and a first plug-in block is provided on the corresponding first plate 311 and the third plate 313, or a first plug-in block is provided on the first connecting block 3121, and a first slot is provided on the corresponding first plate 311 and the third plate 313, one first plug-in block corresponds to one first slot, and each first plug-in block is horizontally inserted into the corresponding first slot; the outer sides of the first plate 311 and the third plate 313 (such as Figure 1 The first plate 311 and the third plate 313 are respectively provided with a hinge (on the left side) and are rotatably connected to the wall through the hinge. The second side frame plate 32 is provided with a door lock installation area. In actual use, in order to reduce the possibility of deformation of the second plate 312 in the event of a fire, the second plate 312 can be made as short as possible.

[0024] At least one first connecting rod 5 is horizontally arranged, and one first guide groove corresponds to one first connecting rod 5. One end of each first connecting rod 5 is located in the first guide groove corresponding to it, and the other end passes through the first side door panel 101 and is fixedly connected to the second plate body 312; when the first movable plate 2 moves forward in a direction perpendicular to the door body 1 under the action of external force, the first movable plate 2 and each first guide groove can move respectively relative to one end of the first connecting rod 5 corresponding to it, and can move until the first movable plate 2 is separated from the first connecting rod 5; when the first movable plate 2 is separated from the first connecting rod 5, the second plate body 312 can move toward the first side door panel 101 until each first plug block is disengaged from the first slot corresponding to it, and at this time, the second plate body 312 is in contact with or separated by a certain distance from the first side door panel 101, so that the first side door panel 101 does not affect the movement of the second plate body 312.

[0025] The fireproof steel structure provided by the present invention, when in use, has one end of the first connecting rod 5 inserted into the first guide groove, and the two ends of the first connecting rod 5 respectively abut against the second plate 312 and the first movable plate 2, the first plug block is inserted into the first slot, and the first connecting blocks 3121 at the top and bottom of the second plate 312 respectively abut against the inner side of the bottom of the first plate 311 and the inner side of the top of the third plate 313, so that the bottom frame plate 34 of the outer frame 3 is hinged to the bottom door plate 104 of the door body 1, or the bottom frame plate 34 of the outer frame 3 is detachably connected to the bottom door plate 104 of the door body 1, so that the door body 1 cannot move forward and backward, left and right, up and down relative to the outer frame 3, and cannot rotate, so that the door body 1 and the outer frame 3 are connected as a whole to form a door, and then hinges are set on the first plate 311 and the third plate 313, and a door lock is set on the second side frame plate 32, and the fireproof steel structure door is installed.

[0026] The present invention arranges an outer frame 3 outside the door body 1. When a fire occurs, the first movable plate 2 only needs to be pulled out forward in a direction perpendicular to the door body 1, and then the first connecting rod 5 is moved toward the direction where the second side door plate 102 is located, so that the second plate 312 can be separated from the first plate 311 and the third plate 313. Then, the door body 1 can be rotated forward or backward relative to the outer frame 3, or the bottom frame plate 34 of the outer frame 3 can be separated from the bottom door plate 104 of the door body 1, so that the door body 1 can be opened or removed. The structure is simple and the operation is also simple.

[0027] In another embodiment, in the fireproof steel structure, the depth of each first guide groove gradually increases from front to back, so that the first movable plate 2 can be easily pulled out, and there are two first guide grooves and two first slots, and the door body 1 can rotate backward relative to the outer frame 3. If the door body 1 is a door, and a person is in a bedroom, the front panel faces the person, and after the door body 1 is separated from the outer frame 3, the door body 1 can rotate away from the person, so that the person will not be hurt.

[0028] In another embodiment, the fireproof steel structure further comprises: A first partition plate 4 is parallel to the first side door plate 101 and is located between the first movable plate 2 and the first side door plate 101. The first partition plate 4 is fixedly connected to the top door plate 103 and the bottom door plate 104, as well as the front panel and the rear panel of the door body 1, so that the strength and stability of the door body 1 can be improved. Each first connecting rod 5 passes through the first partition plate 4; A plurality of first fixing blocks 51, which are fixed on the first connecting rod 5 and are located between the first partition plate 4 and the first side door plate 101; At least one first spring 52, each first connecting rod 5 is sleeved with a first spring 52, each first spring 52 is respectively located between the first fixing block 51 and the first side door plate 101 corresponding thereto, and respectively abuts against the first fixing block 51 and the first side door plate 101, and is in a compressed state; At least one second spring 53 is provided on each first connecting rod 5 , and each second spring 53 is respectively located between the corresponding first fixing block 51 and the first partition plate 4 , and is respectively fixedly connected to the first fixing block 51 and the first partition plate 4 , and is in a stretched state.

[0029] The present invention sets a first partition plate 4, a first fixed block 51, a first spring 52 and a second spring 53. When the first connecting blocks 3121 at the top and bottom of the second plate body 312 respectively abut against the inner side of the bottom of the first plate body 311 and the inner side of the top of the third plate body 313, the first spring 52 is in a compressed state and the second spring 53 is in a stretched state. When the first movable plate 2 is moved forward in a direction perpendicular to the door body 1, the second plate body 312 can be quickly moved toward the direction where the first side door panel 101 is located, and quickly separated from the first plate body 311 and the third plate body 313, and then the door body 1 can be rotated or removed from the outer frame 3, which is conducive to rapid escape.

[0030] In another embodiment, in the fireproof steel structure, there are two first connecting rods 5 , which are symmetrically arranged relative to the center of the second plate body 312 .

[0031] In another embodiment, in the fireproof steel structure, the top frame plate 33 is composed of a fourth plate body 331, a fifth plate body 332 and a sixth plate body 333, the fifth plate body 332 is located between the fourth plate body 331 and the sixth plate body 333, and a second connecting block 3321 is respectively provided at both ends of the fifth plate body 332, the two second connecting blocks 3321 are both located between the top frame plate 33 and the top door plate 103, and are separated from the top door plate 103 by a certain distance, and are respectively abutted against the bottom of the fourth plate body 331 and the sixth plate body 333, each second connecting block 3321 is provided with at least one second plug block, the fourth plate body 331 and the sixth plate body 333 are respectively provided with at least one second slot, one second plug block corresponds to one second slot, and each second plug block is respectively vertically inserted into the second slot corresponding thereto; The front panel of the door body 1 is provided with a second through hole communicating with the interior of the door body 1 , and the height of the top door panel 103 is higher than the height of the second panel 312 ; The fireproof steel structure also includes: The second movable plate 6 is arranged horizontally, and the size of the cross section at each location thereof is the same as the size of the second through hole. The rear end (one end) of the second movable plate 6 is located inside the door body 1, and the front end (the other end) passes through the second through hole. The second movable plate 6 has a second side surface, and the second side surface is opposite to and parallel to the top door plate 103. The second movable plate 6 is provided with at least one second guide groove extending in the front-to-back direction and penetrating the front and rear ends of the second movable plate 6. Each second guide groove is recessed from the top surface of the second movable plate 6 to the inside of the second movable plate 6, and the depth of each second guide groove gradually becomes deeper from front to back; the depth direction of the second guide groove is the vertical direction; The second partition plate 7 is parallel to the top door plate 103, is located between the second movable plate 6 and the top door plate 103, and intersects with the first partition plate 4. The second partition plate 7 is fixedly connected to the first side door plate 101 and the second side door plate 102, as well as the front panel and the rear panel of the door body 1, so that the strength and stability of the door body 1 can be improved; At least one second connecting rod 8 is vertically arranged, and one second guide groove corresponds to one second connecting rod 8. One end of each second connecting rod 8 is located in the second guide groove corresponding to it, and the other end passes through the second partition plate 7 and the top door plate 103 in sequence, and is fixedly connected to the fifth plate body 332; when the second movable plate 6 moves forward in a direction perpendicular to the door body 1 under the action of external force, each second movable plate 6 and each second guide groove can move respectively relative to one end of the second connecting rod 8 corresponding to it, and can move until the second movable plate 6 is separated from the second connecting rod 8; when the second movable plate 6 is separated from the second connecting rod 8, the fifth plate body 332 can move toward the top door plate 103 until each second plug block is disengaged from the second slot corresponding to it. At this time, the fifth plate body 332 is in contact with or separated by a certain distance from the top door plate 103, so that the top door plate 103 does not affect the movement of the fifth plate body 332.

[0032] A plurality of second fixing blocks 81, which are fixed on the second connecting rod 8 and are located between the second partition plate 7 and the top door plate 103; At least one third spring 82, each second connecting rod 8 is sleeved with a third spring 82, each third spring 82 is respectively located between the first fixing block 51 and the top door plate 103 corresponding thereto, and is respectively against the first fixing block 51 and the top door plate 103, and is in a compressed state; At least one fourth spring 83 is provided on each second connecting rod 8 , and each fourth spring 83 is respectively located between the corresponding second fixing block 81 and the second partition plate 7 , and is respectively fixedly connected to the second fixing block 81 and the second partition plate 7 , and is in a stretched state.

[0033] The present invention provides a second partition plate 7, a second fixed block 81, a third spring 82 and a fourth spring 83. When the second connecting blocks 3321 at both ends of the fifth plate 332 respectively abut against the bottom of the fourth plate 331 and the bottom of the sixth plate 333, the third spring 82 is in a compressed state and the fourth spring 83 is in a stretched state. When the second movable plate 6 is moved forward in a direction perpendicular to the door body 1, the fifth plate 332 can be quickly separated from the fourth plate 331 and the sixth plate 333. In this way, the first plate 311 and the third plate 313 provided with hinges are fixed on the wall, and the second plate 312 and the fifth plate 332 are separated from the outer frame 3, so that the connection between the first side door plate 101 and the top door plate 103 and the outer frame 3 is disconnected, so that the door body 1 can rotate relative to the outer frame 3 and open the door body 1. In addition, by abutting the second connecting rod 8 against the second movable plate 6 and the fifth plate 332, the connection strength between the door body 1 and the outer frame 3 can be strengthened.

[0034] In another embodiment, in the fireproof steel structure, there are two second connecting rods 8 , which are symmetrically arranged relative to the center of the fifth plate 332 .

[0035] In another embodiment, in the fireproof steel structure, a third through hole communicating with the interior of the door body 1 is provided on the front panel of the door body 1; a plurality of third slots are provided at intervals on the inner side of the second side frame plate 32; The fireproof steel structure also includes: The third movable plate 9 is vertically arranged, and the size of the cross section at each location thereof is the same as the size of the third through hole. The rear end (one end) of the third movable plate 9 is located inside the door body 1, and the front end (the other end) passes through the third through hole. The third movable plate 9 has a third side surface, and the third side surface is opposite to and parallel to the second side door panel 102. The third movable plate 9 is provided with at least one third guide groove extending in the front-to-back direction and passing through the front and rear ends of the third movable plate 9. Each third guide groove is recessed from the third side surface toward the inside of the third movable plate 9, and the depth of each third guide groove gradually becomes deeper from front to back; the depth direction of the third guide groove is the horizontal direction; The third partition plate 10 is parallel to the second side door panel 102, located between the third movable plate 9 and the second side door panel 102, and crosses the second partition plate 7. The third partition plate 10 is fixedly connected to the top door panel 103 and the bottom door panel 104, as well as the front panel and the rear panel of the door body 1, which can improve the strength and stability of the door body 1.

[0036] At least one third connecting rod 11 is horizontally arranged, and one third connecting rod 11 corresponds to a third guide groove and a third slot. One end of each third connecting rod 11 is located in the third guide groove corresponding to it, and the other end passes through the third partition plate 10 and the second side door plate 102 in sequence, and is inserted into the third slot corresponding to it; when the third movable plate 9 moves forward in a direction perpendicular to the door body 1 under the action of external force, each third movable plate 9 and each third guide groove can move respectively relative to one end of the third connecting rod 11 corresponding to it, and can move until the third movable plate 9 is separated from the third connecting rod 11; when the third movable plate 9 is separated from the third connecting rod 11, the third connecting rod 11 can move toward the direction of the first side door plate 101 until the other end of the third connecting rod 11 is disengaged from the third slot.

[0037] A plurality of third fixing blocks 111, which are fixed on the third connecting rod 11 and are located between the third partition plate 10 and the second side door plate 102; At least one fifth spring 112, each third connecting rod 11 is sleeved with a fifth spring 112, each fifth spring 112 is respectively located between the corresponding third fixing block 111 and the second side door plate 102, and respectively abuts against the third fixing block 111 and the second side door plate 102, and is in a compressed state; At least one sixth spring 113 is provided on each third connecting rod 11, and each sixth spring 113 is respectively located between the corresponding third fixing block 111 and the third partition plate 10, and is respectively fixedly connected to the third fixing block 111 and the third partition plate 10, and is in a stretched state.

[0038] The present invention provides a third partition plate 10, a third fixed block 111, a fifth spring 112 and a sixth spring 113. When the two ends of the third connecting rod 11 respectively abut against the third movable plate 9 and the second side frame plate 32, the fifth spring 112 is in a compressed state and the sixth spring 113 is in a stretched state. When the third movable plate 9 is moved forward in a direction perpendicular to the door body 1, the third connecting rod 11 can be quickly separated from the second side frame plate 32. After that, the door body 1 is rotated or removed from the outer frame 3, which is conducive to rapid escape. And by abutting the third connecting rod 11 against the third movable plate 9 and the second side frame plate 32, the connection strength between the door body 1 and the outer frame 3 can be strengthened.

[0039] In another embodiment, in the fireproof steel structure, there are two third connecting rods 11 , which are symmetrically arranged relative to the center of the second side door panel 102 .

[0040] In another embodiment, the fireproof steel structure further comprises: Two splicing plates are respectively filled in the area between the front panel and the outer frame 3, and between the rear panel and the outer frame 3, so that the area between the front panel and the outer frame 3, and between the rear panel and the outer frame 3 can be sealed by the splicing plates. The splicing plates can be made of easily broken materials, such as plastic or glass. In case of fire, the splicing plates are first broken and then the first movable plate 2 is moved. Alternatively, the splicing plates are only inserted between the front panel and the outer frame 3, and between the rear panel and the outer frame 3, but are easy to remove.

[0041] In another embodiment, in the fireproof steel structure, the first movable plate 2, the second movable plate 6 and the third movable plate 9 are all rectangular and are detachably connected to the front panel. When the first movable plate 2, the second movable plate 6 and the third movable plate 9 do not need to be pulled, the first movable plate 2, the second movable plate 6 and the third movable plate 9 are detachably connected to the front panel, for example, by setting a bolt to achieve detachable connection. The front end of the first movable plate 2, the front end of the second movable plate 6 and the front end of the third movable plate 9 are all provided with a handle. By pulling the handle, the first movable plate 2, the second movable plate 6 and the third movable plate 9 can be quickly pulled out. Three guide rods are fixed on the rear panel, each of which is perpendicular to the rear panel and is inserted into the rear end of the first movable plate 2, the rear end of the second movable plate 6 and the rear end of the third movable plate 9 respectively. The three guide rods can play a guiding role in the forward and backward movement of the first movable plate 2, the second movable plate 6 and the third movable plate 9.

[0042] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Fireproof steel structure, characterized by: include: The door body is in the shape of a rectangular parallelepiped with a hollow interior, and a first through hole communicating with the interior of the door body is provided on the front panel of the door body; the door body has a first side door panel and a second side door panel; A first movable plate is vertically arranged, and the size of the cross section at each location thereof is the same as the size of the first through hole, the rear end of the first movable plate is located inside the door body, and the front end passes through the first through hole, the first movable plate has a first side surface, the first side surface is opposite to and parallel to the first side door plate, and the first movable plate is provided with at least one first guide groove extending in the front-to-back direction and penetrating the front end and the rear end of the first movable plate, and each first guide groove is recessed from the first side surface toward the inside of the first movable plate; The outer frame is a square frame, the door body is located inside the outer frame, the bottom frame plate of the outer frame is hinged to the bottom door plate of the door body, and the door body can rotate forward or backward relative to the outer frame, or the bottom frame plate of the outer frame is detachably connected to the bottom door plate of the door body; the outer frame has a first side frame plate and a second side frame plate, the first side frame plate, the second side frame plate, and the top frame plate of the outer frame are respectively opposite to the first side door plate, the second side door plate, and the top door plate of the door body, and are separated by a certain distance; the first side frame plate is composed of a first plate body, a second plate body, and a third plate body arranged from top to bottom, and a first connecting block is respectively arranged on the top and bottom of the second plate body, The two first connection blocks are both located between the first side door plate and the first side frame plate, and are separated from the first side door plate by a certain distance, and are respectively against the inner side of the bottom of the first plate body and the inner side of the top of the third plate body, and each first connection block is provided with at least one first plug block or at least one first slot; the first plate body and the third plate body are respectively provided with at least one first slot or at least one first plug block, one first plug block corresponds to one first slot, and each first plug block is horizontally inserted into the first slot corresponding thereto; a hinge is respectively provided on the outer side of the first plate body and the third plate body, and a door lock installation area is provided on the second side frame plate; At least one first connecting rod is horizontally arranged, and one first guide groove corresponds to one first connecting rod. One end of each first connecting rod is located in the first guide groove corresponding thereto, and the other end passes through the first side door panel and is fixedly connected to the second plate body. When the first movable plate moves forward in a direction perpendicular to the door body under the action of external force, each first movable plate can move respectively relative to one end of the first connecting rod corresponding thereto, and can move until the first movable plate is separated from the first connecting rod. After the first connecting rod is separated from the first movable plate, the second plate body can move toward the first side door panel until each first plug block is disengaged from the first slot corresponding thereto, and at this time, the second plate body is in contact with or separated by a certain distance from the first side door panel.

2. The fireproof steel structure according to claim 1, characterized in that: The depth of each first guide groove gradually increases from front to back, there are two first guide grooves and two first slots, and the door body can rotate backward relative to the outer frame.

3. The fireproof steel structure according to claim 1, characterized in that: Also includes: A first partition plate is parallel to the first side door plate and is located between the first movable plate and the first side door plate. The first partition plate is fixedly connected to the top door plate, the bottom door plate, and the front panel and the rear panel of the door body. Each first connecting rod passes through the first partition plate. A plurality of first fixing blocks, which are fixed on the first connecting rod and are located between the first partition plate and the first side door plate; At least one first spring, each first connecting rod is sleeved with a first spring, each first spring is respectively located between the first fixing block and the first side door plate corresponding thereto, and respectively abuts against the first fixing block and the first side door plate and is in a compressed state; At least one second spring is sleeved on each first connecting rod, each second spring is respectively located between the first fixed block and the first partition corresponding thereto, and is respectively fixedly connected to the first fixed block and the first partition, and is in a stretched state.

4. The fireproof steel structure according to claim 1, characterized in that: There are two first connecting rods, which are symmetrically arranged relative to the center of the second plate body.

5. The fireproof steel structure according to claim 3, characterized in that: The top frame plate is composed of a fourth plate body, a fifth plate body and a sixth plate body, the fifth plate body is located between the fourth plate body and the sixth plate body, two ends of the fifth plate body are respectively provided with a second connection block, the two second connection blocks are both located between the top frame plate and the top door plate, and are a certain distance away from the top door plate, and are respectively against the bottom of the fourth plate body and the sixth plate body, each second connection block is provided with at least one second plug block, the fourth plate body and the sixth plate body are respectively provided with at least one second slot, one second plug block corresponds to one second slot, and each second plug block is respectively vertically inserted into the second slot corresponding thereto; The front panel of the door body is provided with a second through hole communicating with the interior of the door body, and the height of the top door panel is higher than the height of the second panel; The fireproof steel structure also includes: The second movable plate is horizontally arranged, and the size of the cross section at each location thereof is the same as the size of the second through hole. The rear end of the second movable plate is located inside the door body, and the front end passes through the second through hole. The second movable plate has a second side surface, and the second side surface is opposite to and parallel to the top door plate. The second movable plate is provided with at least one second guide groove extending in the front-to-back direction and passing through the front and rear ends of the second movable plate. Each second guide groove is recessed from the top surface of the second movable plate toward the inside of the second movable plate, and the depth of each second guide groove gradually increases from front to back. A second partition plate is parallel to the top door plate, is located between the second movable plate and the top door plate, and intersects with the first partition plate. The second partition plate is fixedly connected to the first side door plate and the second side door plate, as well as the front panel and the rear panel of the door body; At least one second connecting rod is vertically arranged, one second guide groove corresponds to one second connecting rod, one end of each second connecting rod is located in the second guide groove corresponding thereto, and the other end passes through the second partition plate and the top door plate in sequence, and is fixedly connected to the fifth plate body; when the second movable plate moves forward in a direction perpendicular to the door body under the action of an external force, each second movable plate can move relative to one end of the second connecting rod corresponding thereto, and can move until the second movable plate is separated from the second connecting rod; when the second movable plate is separated from the second connecting rod, the fifth plate body can move toward the top door plate until each second plug block is separated from the second slot corresponding thereto, and at this time, the fifth plate body is in contact with or separated from the top door plate by a certain distance; A plurality of second fixing blocks, which are fixed on the second connecting rod and are located between the second partition plate and the top door plate; At least one third spring, each second connecting rod is sleeved with a third spring, each third spring is respectively located between the first fixing block and the top door plate corresponding thereto, and is respectively against the first fixing block and the top door plate and is in a compressed state; At least one fourth spring is provided on each second connecting rod, each fourth spring is respectively located between the corresponding second fixing block and the second partition plate, and is respectively fixedly connected to the second fixing block and the second partition plate, and is in a stretched state.

6. The fireproof steel structure according to claim 5, characterized in that: There are two second connecting rods, which are symmetrically arranged relative to the center of the fifth plate body.

7. The fireproof steel structure according to claim 5, characterized in that: The front panel of the door body is provided with a third through hole communicating with the interior of the door body; the inner side of the second side frame plate is provided with a plurality of third slots at intervals; The fireproof steel structure also includes: The third movable plate is vertically arranged, and the size of the cross section at each location thereof is the same as the size of the third through hole. The rear end of the third movable plate is located inside the door body, and the front end passes through the third through hole. The third movable plate has a third side surface, and the third side surface is opposite to and parallel to the second side door plate. The third movable plate is provided with at least one third guide groove extending in the front-to-back direction and passing through the front and rear ends of the third movable plate. Each third guide groove is recessed from the third side surface toward the inside of the third movable plate, and the depth of each third guide groove gradually becomes deeper from front to back; A third partition plate is parallel to the second side door plate and is located between the third movable plate and the second side door plate. The third partition plate is fixedly connected to the top door plate, the bottom door plate, and the front panel and the rear panel of the door body; At least one third connecting rod is horizontally arranged, one third connecting rod corresponds to a third guide groove and a third slot, one end of each third connecting rod is located in the third guide groove corresponding thereto, and the other end passes through the third partition plate and the second side door plate in sequence, and is inserted into the third slot corresponding thereto; when the third movable plate moves forward in a direction perpendicular to the door body under the action of an external force, each third movable plate can move respectively relative to one end of the third connecting rod corresponding thereto, and can move until the third movable plate is separated from the third connecting rod; when the third movable plate is separated from the third connecting rod, the third connecting rod can move toward the direction where the first side door plate is located until the other end of the third connecting rod is separated from the third slot; A plurality of third fixing blocks, which are fixed on the third connecting rod and are located between the third partition plate and the second side door plate; At least one fifth spring, each third connecting rod is sleeved with a fifth spring, each fifth spring is respectively located between the corresponding third fixing block and the second side door plate, and respectively abuts against the third fixing block and the second side door plate, and is in a compressed state; At least one sixth spring is provided on each third connecting rod, each sixth spring is respectively located between the corresponding third fixing block and the third partition plate, and is respectively fixedly connected to the third fixing block and the third partition plate and is in a stretched state.

8. The fireproof steel structure according to claim 7, characterized in that: There are two third connecting rods, which are symmetrically arranged relative to the center of the second side door panel.

9. The fireproof steel structure according to claim 7, characterized in that: Also includes: Two splicing plates are used to fill the area between the front panel and the outer frame, and the area between the rear panel and the outer frame respectively.

10. The fireproof steel structure according to claim 7, characterized in that: The first movable plate, the second movable plate and the third movable plate are all in a rectangular shape and are detachably connected to the front panel, respectively. Handles are provided at the front ends of the first movable plate, the second movable plate and the third movable plate. Three guide rods are fixed on the rear panel, each guide rod is perpendicular to the rear panel and is inserted into the rear ends of the first movable plate, the second movable plate and the third movable plate, respectively.

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