High-safety wind-pressure-resistant anti-separation metal component for protective fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, and discloses a high-safety wind-pressure-resistant anti-separation metal component of a protective fireproof door, a door frame is fixedly connected to the inner wall of a wall body, a fireproof door body is arranged in the wall body, and three high-safety anti-separation mechanisms are arranged on the outer side of the fireproof door body. Each high-safety anti-disengagement mechanism comprises a lock chain, and a first connecting block and a second connecting block are arranged on the outer side of each lock chain. According to the high-safety protective fireproof door wind-pressure-resistant anti-separation metal component, through mutual cooperation of the wall body, the door frame, the fireproof door body and the high-safety anti-separation mechanism, a mounting bolt can penetrate through a limiting plate, the fireproof door body and a first connecting block and then is in threaded connection with a mounting nut; and the connecting screw rod can penetrate through the wall body and then is in threaded connection with the second connecting block, and the limiting bolt can penetrate through one end of the chain and then is in threaded connection with the limiting nut, so that the fireproof door body and the wall body are connected through the chain.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a wind pressure resistant and detachment resistant metal component of a fireproof door with high safety. Background Art

[0002] A fire door refers to a door that can meet the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. Fire doors are often used in the inter-section communication passages of subways and high-speed rail tunnels. When the door is closed or open, there is a risk of damage by wind pressure or external force, causing the door leaf to fall on the track or traffic passage, causing injuries to other passing vehicles or personnel. In order to improve the anti-falling property of the fire door, it is necessary to use a corresponding anti-falling protection structure.

[0003] The existing utility model with authorization announcement number CN213269633U discloses a steel wind-pressure resistant fire door. By setting and installing a first limiting mechanism, the limiting rope of the first limiting mechanism is stretched outward when opening, which can limit the opening speed of the fire door, prevent the fire door from being accelerated suddenly by the influence of wind pressure, and increase the wind pressure resistance when the device is not locked. By setting and installing a second limiting mechanism, due to the different distribution positions of the first limiting mechanism and the second limiting mechanism, the fire door can be further limited to increase the wind pressure resistance of the fire door.

[0004] Although the above-mentioned technical scheme can limit the opening speed of the fire door and thus increase the wind pressure resistance of the fire door, in the above-mentioned technical scheme, the limiting mechanism is connected to the door frame, and lacks a high-safety wind pressure resistance and anti-detachment structure, resulting in the fire door being easily detached from the door frame and the wall under high wind pressure or external force damage, thereby risking falling on the track or traffic passage and causing damage to other vehicles or personnel passing by.

[0005] Therefore, those skilled in the art provide a highly safe wind-resistant and anti-detachment metal component for protective fire doors to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to provide a high-safety fire-proof door metal component which is wind-pressure-resistant and anti-detachment, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A highly secure wind-pressure-resistant and anti-detachment metal component for protective fire doors, wherein a door frame is fixedly connected to the inner wall of a wall, a fire door body is arranged inside the wall, and three highly secure anti-detachment mechanisms are arranged on the outer side of the fire door body;

[0009] Each of the high-security anti-disengagement mechanisms includes a chain, and a first connecting block and a second connecting block are respectively arranged on the outer side of each of the chains, and a connecting screw is threadedly connected to the inner wall of each of the second connecting blocks, and one end of each of the connecting screws away from the second connecting block is fixedly connected to a limiting disk, a limiting plate is arranged on the outer side of each of the first connecting blocks, and a limiting bolt is arranged inside each of the first connecting blocks, and the outer surface of each limiting bolt is threadedly connected to a limiting nut, and four mounting bolts are arranged inside each of the limiting plates, and the outer surface of each mounting bolt is threadedly connected to a mounting nut.

[0010] As a further solution of the utility model: the back side of each of the first connecting blocks is in contact with the front side of the fireproof door body, the front side of the fireproof door body is movably hinged to the front side of the door frame, the inner wall of each of the second connecting blocks is fixedly connected to the outer surface of the chain, the outer surface of each of the connecting screws is in contact with the inner wall of the wall, the front side of each of the limiting plates is in contact with the back side of the fireproof door body, the outer surface of each of the limiting bolts is in contact with the inner wall of the first connecting block and the inner wall of the chain respectively, the top of each of the limiting nut is in contact with the outer surface of the first connecting block, the end of each of the mounting nut close to the first connecting block is in contact with the front side of the first connecting block, a number of identical nut holes are provided on the outer surface of each of the second connecting blocks, an adjusting screw is provided on the outer side of each of the second connecting blocks, and the outer surface of each of the adjusting screws is threadedly connected to the inner wall of the nut hole.

[0011] As a further solution of the utility model: the outer surface of each adjusting screw is fixedly connected with an anti-skid sleeve, and the outer surface of each anti-skid sleeve is fixedly connected with a plurality of identical anti-skid protrusions.

[0012] As a further solution of the utility model: the outer surface of each connecting screw is sleeved with a first metal washer, and the back side of each first metal washer is in contact with the front side of the wall.

[0013] As a further solution of the utility model: the outer surface of each connecting screw is sleeved with an elastic protective gasket, the back side of each elastic protective gasket contacts the front side of the limit plate, and the front side of each elastic protective gasket contacts the back side of the wall.

[0014] As a further solution of the utility model: the outer surface of each mounting bolt is sleeved with a second metal washer, and the front side of each second metal washer is in contact with the back side of the limiting plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model cooperates with the wall, door frame, fire door body and high-security anti-detachment mechanism, so that the mounting bolts can pass through the limit plate, the fire door body and the first connecting block respectively and then be threadedly connected with the mounting nut, the connecting screw can pass through the wall and then be threadedly connected with the second connecting block, and the limiting bolt can pass through one end of the chain and then be threadedly connected with the limiting nut, so that there is a chain connection between the fire door body and the wall. Even if the door frame and the fire door body are separated from the wall due to wind pressure or external force, it can be ensured that the wall will involve the fire door body through the chain, which plays a role in increasing the anti-detachment safety effect of the fire door body, and avoids the problem that the fire door is easy to fall off due to the separation of the door frame and the wall under high wind pressure or external force damage due to the lack of a high-safety wind pressure resistant anti-detachment structure, thereby having the risk of falling on the track or traffic passage and causing damage to other vehicles or personnel passing by. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a wind pressure resistant and detachable metal component of a highly safe protective fire door;

[0018] Figure 2 A schematic diagram of a three-dimensional structure of a fire door body in a metal component that is wind-resistant and detachable for a highly secure protective fire door;

[0019] Figure 3 A schematic diagram of a three-dimensional structure of a chain in a metal component that is wind pressure resistant and detachable for a highly secure fireproof door;

[0020] Figure 4 A schematic diagram of a three-dimensional structure of a chain in a metal component that is wind pressure resistant and detachable for a highly secure fireproof door;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the first connecting block in a wind pressure resistant and detachable metal component of a highly safe protective fire door;

[0022] Figure 6 The present invention is a schematic diagram of the cutaway three-dimensional structure of a second connection block in a wind pressure resistant and detachment resistant metal component of a highly safe protective fire door.

[0023] In the figure: 1. wall; 2. door frame; 3. fireproof door body; 4. high-security anti-separation mechanism; 401. chain; 402. first connecting block; 403. limit plate; 404. mounting bolt; 405. mounting nut; 406. limit bolt; 407. limit nut; 408. connecting screw; 409. limit plate; 410. second connecting block; 5. second metal washer; 6. first metal washer; 7. elastic protective washer; 8. nut hole; 9. adjusting screw; 10. anti-slip sleeve; 11. anti-slip boss. DETAILED DESCRIPTION

[0024] See also Figure 1-6 A high-security protective fire door wind pressure resistant and anti-detachment metal component, the inner wall of the wall 1 is fixedly connected with a door frame 2, the interior of the wall 1 is provided with a fire door body 3, the outer side of the fire door body 3 is provided with three high-security anti-detachment mechanisms 4, each high-security anti-detachment mechanism 4 includes a chain 401, the outer side of each chain 401 is respectively provided with a first connecting block 402 and a second connecting block 410, the back side of each first connecting block 402 is in contact with the front side of the fire door body 3, the front side of the fire door body 3 is movably hinged with the front side of the door frame 2, and each second connecting block The inner walls of 410 are fixedly connected to the outer surface of the chain 401, and a number of identical nut holes 8 are opened on the outer surface of each second connecting block 410. An adjusting screw 9 is provided on the outer side of each second connecting block 410. The outer surface of each adjusting screw 9 is threadedly connected to the inner wall of the nut hole 8. By providing the adjusting screw 9, it can be threadedly connected to any nut hole 8 on the corresponding second connecting block 410, thereby facilitating the screwing of the second connecting block 410 and making it rotate, thereby cooperating with other threaded structures to facilitate the connection of the second connecting block 410.

[0025] The inner wall of each second connecting block 410 is threadedly connected with a connecting screw 408, and one end of each connecting screw 408 away from the second connecting block 410 is fixedly connected to a limiting plate 409, and the outer surface of each connecting screw 408 is in contact with the inner wall of the wall 1, and the outer surface of each adjusting screw 9 is fixedly connected with an anti-slip sleeve 10, and the outer surface of each anti-slip sleeve 10 is fixedly connected with a plurality of identical anti-slip bosses 11. By providing the anti-slip bosses 11, the friction force of the outer surface of the anti-slip sleeve 10 can be increased. By providing the anti-slip sleeve 10 and the anti-slip bosses 11, the friction force of the outer surface of the adjusting screw 9 can be jointly increased, so that the hand can hold the adjusting screw 9 tightly without slipping, thereby facilitating the rotation of the second connecting block 410 by rotating the adjusting screw 9.

[0026] A limiting plate 403 is provided on the outer side of each first connecting block 402, and a limiting bolt 406 is provided inside each first connecting block 402. The front of each limiting plate 403 contacts the back of the fire door body 3, and the outer surface of each limiting bolt 406 contacts the inner wall of the first connecting block 402 and the inner wall of the chain 401 respectively. The outer surface of each connecting screw 408 is sleeved with a first metal washer 6, and the back of each first metal washer 6 contacts the front of the wall 1. By providing the first metal washer 6, it can be padded between the wall 1 and the second connecting block 410, thereby increasing the contact area between the two, thereby increasing the tightness of the fit between the two.

[0027] The outer surface of each limiting bolt 406 is threadedly connected to the limiting nut 407, and four mounting bolts 404 are arranged inside each limiting plate 403. The top of each limiting nut 407 contacts the outer surface of the first connecting block 402, and the outer surface of each connecting screw 408 is sleeved with an elastic protective washer 7, and the back of each elastic protective washer 7 contacts the front of the limiting plate 409, and the front of each elastic protective washer 7 contacts the back of the wall 1. By providing the elastic protective washer 7, it has good elasticity and can be placed between the wall 1 and the limiting plate 409, thereby increasing the contact area and contact cushioning between the two.

[0028] The outer surface of each mounting bolt 404 is threadedly connected with a mounting nut 405, and the end of each mounting nut 405 close to the first connecting block 402 is in contact with the front surface of the first connecting block 402. The outer surface of each mounting bolt 404 is sleeved with a second metal washer 5, and the front surface of each second metal washer 5 is in contact with the back surface of the limit plate 403. By providing the second metal washer 5, it can be cushioned between the limit plate 403 and the mounting bolt 404, thereby increasing the contact area between the two, thereby increasing the tightness and stability of the connection between the two.

[0029] The working principle of the utility model is as follows: when in use, holes through which the connecting screws 408 can pass are punched in advance in the wall 1, and holes through which the grouped mounting bolts 404 can pass are punched in the fire door body 3. When each high-security anti-separation mechanism 4 is installed in the wall 1 and the fire door body 3, the mounting bolts 404 are first passed through the limiting plate 403, the pre-punched holes on the fire door body 3 and the first connecting block 402, and then threadedly connected with the mounting nut 405. Then, the connecting screw 408 is passed through the pre-punched holes on the wall 1 and threadedly connected with the second connecting block 410. After that, the chain 401 is placed inside the first connecting block 402, and one end of the chain 401 is passed through with the limiting bolt 406 and then threadedly connected with the limiting screw The female 407 is threadedly connected, so that there is a connection between the fire door body 3 and the wall 1 via the chain 401. Therefore, even if the door frame 2 and the fire door body 3 are separated from the wall 1 due to wind pressure or external force, it can be ensured that the wall 1 will be connected to the fire door body 3 through the chain 401, thereby increasing the safety effect of the fire door body 3 preventing it from separating. The design of the entire high-safety protective fire door with wind pressure and anti-separation metal components effectively solves the problem that due to the lack of a high-safety wind pressure and anti-separation structure, the fire door is easily separated from the door frame 2 and the wall 1 under high wind pressure or external force damage, thereby having the risk of falling on the track or traffic passage and causing damage to other vehicles or personnel passing by.

[0030] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly safe wind-resistant and anti-detachment metal component for fire-resistant doors, characterized in that: The inner wall of the wall (1) is fixedly connected to a door frame (2), a fireproof door body (3) is arranged inside the wall (1), and three high-safety anti-separation mechanisms (4) are arranged on the outer side of the fireproof door body (3); Each of the high-security anti-separation mechanisms (4) comprises a chain (401), and a first connecting block (402) and a second connecting block (410) are respectively arranged on the outer side of each of the chains (401), and a connecting screw (408) is threadedly connected to the inner wall of each of the second connecting blocks (410), and one end of each of the connecting screws (408) away from the second connecting block (410) is fixedly connected to a limiting plate (409), and a limiting plate (403) is arranged on the outer side of each of the first connecting blocks (402), and a limiting bolt (406) is arranged inside each of the first connecting blocks (402), and the outer surface of each of the limiting bolts (406) is threadedly connected to a limiting nut (407), and four mounting bolts (404) are arranged inside each of the limiting plates (403), and the outer surface of each of the mounting bolts (404) is threadedly connected to a mounting nut (405).

2. A highly safe wind pressure resistant and anti-detachment metal component for fireproof doors according to claim 1, characterized in that: The back side of each of the first connecting blocks (402) is in contact with the front side of the fireproof door body (3), the front side of the fireproof door body (3) is movably hinged to the front side of the door frame (2), the inner wall of each of the second connecting blocks (410) is fixedly connected to the outer surface of the lock chain (401), the outer surface of each of the connecting screws (408) is in contact with the inner wall of the wall (1), the front side of each of the limiting plates (403) is in contact with the back side of the fireproof door body (3), and the outer surface of each of the limiting bolts (406) is respectively in contact with the inner wall of the first connecting block (402) and the lock chain (401). The second connecting blocks (410) are connected to the first connecting block (401) and the second connecting block (410) are connected to the inner wall of the chain (401), the top of each limiting nut (407) is connected to the outer surface of the first connecting block (402), the end of each mounting nut (405) close to the first connecting block (402) is connected to the front of the first connecting block (402), the outer surface of each second connecting block (410) is provided with a plurality of identical nut holes (8), the outer side of each second connecting block (410) is provided with an adjusting screw (9), and the outer surface of each adjusting screw (9) is threadedly connected to the inner wall of the nut hole (8).

3. A highly safe wind pressure resistant and anti-detachment metal component for fireproof doors according to claim 2, characterized in that: The outer surface of each adjusting screw (9) is fixedly connected to an anti-skid sleeve (10), and the outer surface of each anti-skid sleeve (10) is fixedly connected to a plurality of identical anti-skid protrusions (11).

4. A highly safe wind pressure resistant and anti-detachment metal component for fireproof doors according to claim 1, characterized in that: The outer surface of each connecting screw (408) is sleeved with a first metal washer (6), and the back surface of each first metal washer (6) is in contact with the front surface of the wall (1).

5. The high-safety fire door wind pressure resistant and anti-detachment metal component according to claim 1, characterized in that: The outer surface of each connecting screw (408) is sleeved with an elastic protective washer (7), the back surface of each elastic protective washer (7) is in contact with the front surface of the limiting plate (409), and the front surface of each elastic protective washer (7) is in contact with the back surface of the wall (1).

6. The high-safety fire-proof door wind pressure-resistant and anti-detachment metal component according to claim 1, characterized in that: The outer surface of each mounting bolt (404) is sleeved with a second metal washer (5), and the front surface of each second metal washer (5) is in contact with the back surface of the limiting plate (403).

Images