Induction heat insulation steel fireproof door of green building

Abstract

The invention relates to the technical field of fireproof doors, and discloses an induction heat insulation steel fireproof door of a green building, which comprises a door frame and a door body, and further comprises a mounting assembly, the mounting assembly comprises a placement groove, a placement rod, a limiting groove, a placement spring, an elastic telescopic block, a placement groove, a shielding plate and a shielding spring, the placement groove is formed in the top of the door body, the placement rod is slidably mounted on the inner wall of the placement groove, the limiting groove is formed in the circumferential surface of the placement rod, and the placement spring is arranged between the placement groove and the placement rod. The free end of the elastic telescopic block moves rightwards under the action of self elasticity, and the free end of the elastic telescopic block moves rightwards to be in contact with the inner wall of the limiting groove and limit the placing rod, so that the installation of the door body and the alignment locking mechanism of the placing rod and the installation hole are completed, the positioning operation can be simplified, and the position of the door body does not need to be repeatedly adjusted; therefore, the problem of gap deviation caused by personal errors is avoided.

Description

Technical Field

[0001] This invention relates to the field of fire door technology, and more particularly to an induction-insulated steel fire door for green buildings. Background Technology

[0002] Underground parking garages and shopping malls, which are densely populated or have a high risk of fire, usually use steel fire doors in their escape routes to block the spread of flames and the conduction of high temperatures in the event of a fire, and to protect people and equipment on the other side of the door.

[0003] Patent CN216974644U relates to a smoke-sensing, heat-insulating steel fire door, including a door frame, a door body hinged to the door frame, a liquid storage tank fixedly connected to the top of the door frame, a smoke sensor on the door body, and an internal cavity within the door body. The cavity and the liquid storage tank are connected via a connecting pipe, and a solenoid valve is installed inside the connecting pipe. The solenoid valve is electrically connected to the smoke sensor, and multiple vents are located at the top of the side wall of the cavity. This patent, through the design of the liquid storage tank, connecting pipe, and smoke sensor, enables the smoke sensor to detect smoke, triggering the solenoid valve to open. This allows water from the liquid storage tank to enter the cavity, thus mitigating the temperature of the fire door and preventing damage due to overheating.

[0004] In the aforementioned patent, water from the storage tank enters the cavity to alleviate the temperature of the fire door and prevent damage due to overheating. However, misalignment between the door frame and the door during installation can lead to uneven gaps, causing the door to scrape against the frame and jam when opening and closing. Additionally, the door can be deformed due to strong impact when it opens, and repeated opening and closing can delay escape during fire evacuation due to crowding and backtracking. Therefore, a green building sensor-operated insulated steel fire door is needed to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a green building sensor-operated heat-insulating steel fire door.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A green building insulated steel fire door includes a door frame and a door body, and also includes an installation assembly. The installation assembly includes a placement groove, a placement rod, a limiting groove, a placement spring, an elastic telescopic block, a mounting groove, a shielding plate, and a shielding spring. The placement groove is located at the top of the door body. The placement rod is slidably mounted on the inner wall of the placement groove. The limiting groove is located on the circumference of the placement rod. The placement spring is disposed between the placement groove and the placement rod. The elastic telescopic block is fixedly mounted at the top of the door frame. The mounting groove is located at the top of the door frame. The shielding plate is slidably mounted at the top of the door frame. The shielding spring is located at the top of the mounting groove. Between the groove and the baffle, an installation hole is provided at the top of the door frame. The elastic telescopic block is used to limit the placement rod, the baffle is used to cover the installation hole, and the placement rod is used to limit the door body. A smoke alarm is provided on the rear side of the door body. The smoke alarm is used to sound an alarm after sensing smoke. When the placement rod continues to move upward and the elastic telescopic block is aligned with the limiting groove, the free end of the elastic telescopic block moves to the right under its own elastic force. The free end of the elastic telescopic block moves to the right and contacts the inner wall of the limiting groove, limiting the placement rod, thereby completing the installation of the door body.

[0007] As a preferred embodiment of the present invention, the right side of the elastic telescopic block is set as an inclined surface, the elastic telescopic block is in contact with the limiting groove, the placement rod is in contact with the inner wall of the mounting hole, and the placement rod moves upward to contact the baffle plate and squeeze the baffle plate. The baffle plate moves upward under the pressure of the placement rod, and the upward movement of the baffle plate will release the obstruction of the mounting hole.

[0008] As a preferred embodiment of the present invention, the door body is in contact with the inner wall of the door frame, the baffle plate is in contact with the placement rod, and a connection hole is provided on the front side of the door frame, through which the door frame can be connected to the green wall.

[0009] As a preferred embodiment of the present invention, it further includes a buffer assembly and a limiting assembly. The buffer assembly is used for door collision prevention, and the limiting assembly is used to maintain the door in the open state. The buffer assembly includes a buffer frame, a buffer plate, a buffer roller, a sealing plate, a sealing hole, an elastic telescopic rod, and a mounting hole. The limiting frame moves slowly to the right, causing the buffer roller to move slowly to the right. The slow movement of the buffer roller to the right allows the door to rotate slowly only when it opens to a large angle. The buffer frame is fixedly installed on the front side of the door frame. The buffer plate is slidably installed on the inner wall of the buffer frame. The buffer roller is rotatably installed on the left side of the buffer plate. The sealing plate is fixedly installed on the inner wall of the buffer frame. The sealing hole is opened on the right side of the sealing plate. The elastic telescopic rod is disposed between the buffer plate and the sealing plate. The mounting hole is opened on the front side of the buffer frame.

[0010] As a preferred embodiment of the present invention, the buffer frame is provided with a fire extinguishing agent, a spring is provided between the buffer roller and the buffer plate, and a sealing ring is provided between the buffer frame and the buffer plate. After the sealing ring melts, the fire extinguishing agent inside the buffer frame will flow out through the gap between the buffer frame and the buffer plate. The outflow of the fire extinguishing agent will cool down the rotation point between the door and the door frame.

[0011] As a preferred embodiment of the present invention, the buffer assembly includes a limiting frame, a limiting bracket, a limiting spring, a connecting pipe, and a toothed ring. The coolant entering the limiting frame will squeeze the limiting bracket, causing the limiting bracket to move backward under the pressure of the coolant inside the limiting frame. The limiting frame is fixedly installed on the top of the door frame, and the limiting bracket is slidably installed on the inner wall of the limiting frame. The limiting spring is disposed between the limiting frame and the limiting bracket, and the connecting pipe is disposed between the buffer frame and the limiting frame. The toothed ring is fixedly installed on the inner wall of the limiting groove. The backward movement of the limiting bracket will pull the limiting spring, causing the limiting spring to deform and store force. The limiting spring can support the limiting bracket.

[0012] As a preferred embodiment of the present invention, the buffer assembly further includes a connecting hole and an arc-shaped block. The connecting hole is opened on the right side of the limiting frame, and the arc-shaped block is fixedly installed on the inner wall of the limiting frame. The connecting hole is used to connect a connecting pipe. The toothed ring cannot rotate, so that the placement rod and the door cannot rotate, thereby keeping the door in an open state to facilitate personnel escape.

[0013] As a preferred embodiment of the present invention, a rubber ring is provided between the limiting frame and the limiting bracket. The rubber ring can improve the sealing between the limiting frame and the limiting bracket. Coolant is provided inside the limiting frame. A square groove is provided on the front side of the door frame. The square groove is used to carry the connecting pipe. The connecting pipe is in contact with the square groove.

[0014] The present invention has the following beneficial effects: 1. This invention involves placing the door body inside the door frame and aligning the placement rod with the mounting hole. As the placement rod continues to move upward, aligning the elastic telescopic block with the limiting groove, manual lifting of the door body can easily lead to tilting due to visual deviation. The alignment and locking mechanism between the placement rod and the mounting hole simplifies the positioning operation, eliminating the need for repeated adjustments to the door body position. This avoids gap deviations caused by human error and prevents bottom scraping and jamming caused by door sagging later. The baffle plate moves upward under the pressure of the placement rod, releasing the obstruction of the mounting hole. If the mounting hole is blocked by impurities, the placement rod cannot be accurately inserted or becomes stuck after insertion. The protective effect of the baffle plate ensures that the inner wall of the mounting hole is unobstructed, guaranteeing accurate matching between the placement rod and the mounting hole, thereby preventing deformation of the mounting hole and reducing installation failures.

[0015] 2. In this invention, the limiting frame moves slowly to the right, causing the buffer roller to move slowly to the right. The slow movement of the buffer roller to the right means that the door can only rotate slowly when it opens to a large angle. The rolling buffering effect of the buffer roller can offset the lateral impact force when the door opens, preventing accidental collisions caused by improper control when people open the door quickly.

[0016] 3. In this invention, the high temperature of the flames in the later stages of a fire will melt the sealing ring. After the sealing ring melts, the extinguishing agent inside the buffer frame will flow out through the gap between the buffer frame and the buffer plate. The outflow of the extinguishing agent will cool down the rotation point between the door and the door frame. After the extinguishing agent flows out in a directional manner, it can directly cool down the rotation point, preventing the door components from deforming and failing due to high temperature. This ensures that the door still has a certain degree of opening and closing flexibility in the later stages of a fire, facilitating the evacuation of trapped personnel or the passage of rescue personnel.

[0017] 4. This invention prevents the toothed ring from rotating due to the limiting frame. This prevents the placement rod and the door from rotating, thus keeping the door open for easy escape. In the event of a fire, the toothed ring is locked by the limiting frame, preventing the door from rotating and keeping it open. This eliminates the need for people to exert extra force to hold the door open, ensuring that people can pass through quickly and smoothly, thus avoiding the risk of secondary injuries and deaths caused by repeated door closing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a schematic diagram of the positional structure of the door frame and buffer frame proposed in this invention; Figure 3 The present invention proposes Figure 2 Enlarged schematic diagram of section A in the middle; Figure 4 This is a schematic diagram of a half-section structure of the door frame proposed in this invention; Figure 5 This is a schematic diagram of the position structure of the elastic telescopic block and the limiting groove proposed in this invention; Figure 6 This is a schematic diagram of a half-section structure of the buffer frame proposed in this invention; Figure 7 This is a schematic diagram of a half-section of the limiting frame structure proposed in this invention.

[0019] In the diagram: 1. Door frame; 2. Door body; 3. Placement groove; 4. Placement rod; 5. Limiting groove; 6. Placement spring; 7. Elastic telescopic block; 8. Installation groove; 9. Baffle plate; 10. Baffle spring; 111. Buffer frame; 112. Buffer plate; 113. Buffer roller; 114. Sealing plate; 115. Sealing hole; 116. Elastic telescopic rod; 117. Installation hole; 121. Limiting frame; 122. Limiting bracket; 123. Limiting spring; 124. Connecting pipe; 125. Connecting hole; 126. Arc block; 127. Toothed ring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figure 1-7 One embodiment of the present invention is: a heat-insulating steel fire door for green buildings, comprising a door frame 1 and a door body 2, and further comprising an installation assembly; the installation assembly includes a placement groove 3, a placement rod 4, a limiting groove 5, a placement spring 6, an elastic telescopic block 7, a mounting groove 8, a shielding plate 9, and a shielding spring 10. The placement groove 3 is formed at the top of the door body 2, the placement rod 4 is slidably installed on the inner wall of the placement groove 3, the limiting groove 5 is formed on the circumferential surface of the placement rod 4, the placement spring 6 is disposed between the placement groove 3 and the placement rod 4, the elastic telescopic block 7 is fixedly installed at the top of the door frame 1, the mounting groove 8 is formed at the top of the door frame 1, and the shielding plate 9 is slidably installed... Installed on the top of the door frame 1, the blocking spring 10 is set between the mounting groove 8 and the blocking plate 9. The top of the door frame 1 has an installation hole. The elastic telescopic block 7 is used to limit the placement rod 4. The blocking plate 9 is used to block the mounting hole. The placement rod 4 is used to limit the door body 2. A smoke alarm is installed on the rear side of the door body 2. The smoke alarm is used to sound an alarm after sensing smoke. The alignment and locking mechanism between the placement rod 4 and the mounting hole can simplify the positioning operation without repeatedly adjusting the position of the door body 2, thereby avoiding gap deviation caused by human error and preventing bottom scraping and jamming caused by the sagging of the door body 2 later.

[0022] The right side of the elastic telescopic block 7 is set as an inclined surface. The elastic telescopic block 7 contacts the limiting groove 5, and the placement rod 4 contacts the inner wall of the mounting hole. When the placement rod 4 moves upward, it will contact the baffle plate 9 and squeeze the baffle plate 9. The baffle plate 9 moves upward under the pressure of the placement rod 4. The upward movement of the baffle plate 9 will release the obstruction of the mounting hole. The protective function of the baffle plate 9 can ensure that the inner wall of the mounting hole is unobstructed, and can ensure the precise fit between the placement rod 4 and the mounting hole, thereby preventing the deformation of the mounting hole and reducing installation failures.

[0023] The door body 2 contacts the inner wall of the door frame 1, the baffle plate 9 contacts the placement rod 4, and a connection hole is provided on the front side of the door frame 1, through which the door frame 1 can be connected to the green wall.

[0024] During operation: When installing the door body 2, manually press the placement rod 4 downwards. The downward movement of the placement rod 4 will compress the placement spring 6. The placement spring 6 will deform and store force under the compression of the placement rod 4. At the same time, the door body 2 is placed into the door frame 1 and the placement rod 4 is aligned with the mounting hole. After a slight shaking to align the placement rod 4 with the mounting hole, the placement rod 4 moves upwards to reset under the elastic force of the placement spring 6. The upward movement of the placement rod 4 will contact the inner wall of the mounting hole and limit the door body 2. Furthermore, when the placement rod 4 moves upward, it will contact the inclined surface of the free end of the elastic telescopic block 7 and squeeze the free end of the elastic telescopic block 7. The free end of the elastic telescopic block 7 will move to the left and accumulate force under the squeezing of the placement rod 4. When the placement rod 4 continues to move upward and the elastic telescopic block 7 is aligned with the limiting groove 5, the free end of the elastic telescopic block 7 will move to the right under its own elastic force. The free end of the elastic telescopic block 7 will contact the inner wall of the limiting groove 5 and limit the placement rod 4, thereby completing the installation of the door body 2. At the same time, when the placement rod 4 moves upward, it will contact the baffle plate 9 and squeeze the baffle plate 9. The baffle plate 9 will move upward under the squeezing of the placement rod 4. The upward movement of the baffle plate 9 will release the obstruction of the mounting hole. At the same time, the upward movement of the baffle plate 9 will pull the baffle spring 10. When the blocking spring 10 is pulled by the blocking plate 9, it deforms and stores force. When the door body 2 needs to be disassembled, push the elastic telescopic block 7 to the left to disengage from the contact with the limiting groove 5. The elastic telescopic block 7 disengages from the contact with the limiting groove 5 and releases the limitation on the placement rod 4. After the limitation on the placement rod 4 is released, press the placement rod 4 downward to disassemble the door body 2.

[0025] Reference Figure 1-7Based on the above embodiments, another embodiment of the present invention further includes a buffer assembly and a limiting assembly. The buffer assembly is used to prevent the door 2 from impacting, and the limiting assembly is used to maintain the door 2 in the open state. The buffer assembly includes a buffer frame 111, a buffer plate 112, a buffer roller 113, a sealing plate 114, a sealing hole 115, an elastic telescopic rod 116, and a mounting hole 117. The buffer frame 111 is fixedly installed on the front side of the door frame 1. The buffer plate 112 is slidably installed on the inner wall of the buffer frame 111. The buffer roller 113 is rotatably installed on the left side of the buffer plate 112. The sealing plate 114 is fixedly installed on the inner wall of the buffer frame 111. The sealing hole 115 is opened on the right side of the sealing plate 114. The elastic telescopic rod 116 is disposed between the buffer plate 112 and the sealing plate 114. The mounting hole 117 is opened on the front side of the buffer frame 111. The rolling buffering effect of the buffer roller 113 can offset the lateral impact force when the door 2 is opened, preventing accidental collisions caused by improper control when personnel quickly open the door 2.

[0026] The buffer frame 111 is filled with fire extinguishing agent. A spring is installed between the buffer roller 113 and the buffer plate 112 to support the buffer roller 113. A sealing ring is installed between the buffer frame 111 and the buffer plate 112 to improve the sealing between them. After the sealing ring melts, the fire extinguishing agent inside the buffer frame 111 will flow out through the gap between the buffer frame 111 and the buffer plate 112. The outflow of the fire extinguishing agent will cool down the rotation point between the door body 2 and the door frame 1. After the fire extinguishing agent flows out in a directional manner, it can directly cool down the rotation point, preventing the door body 2 components from deforming and failing due to high temperature. This ensures that the door body 2 still has a certain degree of opening and closing flexibility in the later stages of a fire, facilitating the evacuation of trapped personnel or the passage of rescue personnel.

[0027] The buffer assembly includes a limiting frame 121, a limiting bracket 122, a limiting spring 123, a connecting pipe 124, and a toothed ring 127. The limiting frame 121 is fixedly installed on the top of the door frame 1. The limiting bracket 122 is slidably installed on the inner wall of the limiting frame 121. The limiting spring 123 is disposed between the limiting frame 121 and the limiting bracket 122. The connecting pipe 124 is disposed between the buffer frame 111 and the limiting frame 121. The toothed ring 127 is fixedly installed on the inner wall of the limiting groove 5. When the limiting bracket 122 moves backward, it will pull the limiting spring 123. The limiting spring 123 deforms and stores force under the pull of the limiting bracket 122. The limiting bracket 122 can be supported by the limiting spring 123.

[0028] The buffer assembly also includes a connecting hole 125 and an arc-shaped block 126. The connecting hole 125 is located on the right side of the limiting frame 121, and the arc-shaped block 126 is fixedly installed on the inner wall of the limiting frame 121. The connecting hole 125 is used to connect the connecting pipe 124. The toothed ring 127 cannot rotate, so that the placement rod 4 and the door 2 cannot rotate, thereby keeping the door 2 open to facilitate the escape of personnel. After the toothed ring 127 is locked by the limiting frame 122, the door 2 cannot rotate and always remains open. No additional force is required from personnel to hold the door 2, ensuring that the escaped people can pass through quickly and smoothly, thereby avoiding the risk of secondary casualties caused by the repeated closing of the door 2.

[0029] A rubber ring is provided between the limiting frame 121 and the limiting bracket 122. The rubber ring can improve the sealing between the limiting frame 121 and the limiting bracket 122. Coolant is provided inside the limiting frame 121. A square groove is provided on the front side of the door frame 1. The square groove is used to support the connecting pipe 124. The connecting pipe 124 is in contact with the square groove.

[0030] When the door 2 is rotated counterclockwise to open to a large angle, it will contact the buffer roller 113 and squeeze the buffer roller 113. The buffer roller 113 will rotate due to the squeeze of the door 2. The rotation of the buffer roller 113 will squeeze the spring. The spring will deform and store force due to the squeeze of the buffer roller 113. At the same time, the rotation of the buffer roller 113 will move to the right. The movement of the buffer roller 113 to the right will drive the limit frame 122 to move to the right. The movement of the limit frame 122 to the right will squeeze the coolant inside the buffer frame 111. The coolant inside the buffer frame 111 will flow slowly to the right through the sealing hole 115 due to the squeeze of the limit frame 122. The coolant inside the buffer frame 111 flows slowly, causing the limiting frame 122 to move slowly to the right. The slow movement of the limiting frame 122 to the right causes the buffer roller 113 to move slowly to the right. The slow movement of the buffer roller 113 to the right causes the door 2 to open to a large angle but can only rotate slowly. At the same time, the movement of the limiting frame 122 to the right will squeeze the free end of the elastic telescopic rod 116. The free end of the elastic telescopic rod 116 is squeezed to the right by the limiting frame 122 and retracts and stores force. After the door 2 closes and resets, it will disengage from the buffer roller 113. After the buffer roller 113 disengages from the door 2; The limit frame 122 will move to the left and reset under the elastic force of the elastic telescopic rod 116. In the event of a fire, the high temperature of the flame will melt the sealing ring. After the sealing ring melts, the fire extinguishing agent inside the buffer frame 111 will flow out through the gap between the buffer frame 111 and the buffer plate 112. The outflow of the fire extinguishing agent will cool down the rotation point between the door body 2 and the door frame 1.

[0031] The coolant inside the buffer frame 111 is squeezed by the buffer plate 112 and enters the limiting frame 121 through the connecting pipe 124. The coolant inside the limiting frame 121 will squeeze the limiting frame 122. The limiting frame 122 moves backward due to the pressure of the coolant inside the limiting frame 121. The backward movement of the limiting frame 122 will contact the toothed ring 127 and limit the toothed ring 127. The toothed ring 127 cannot rotate due to the limitation of the limiting frame 122. The inability of the toothed ring 127 to rotate prevents the placement rod 4 and the door 2 from rotating, thus keeping the door 2 open to facilitate the escape of personnel. At the same time, the backward movement of the limiting frame 122 will pull the limiting spring 123. The limiting spring 123 deforms and stores force due to the pull of the limiting frame 122. Furthermore, when the limit frame 122 moves backward, it will collide with the arc block 126 and cause vibration. The vibration of the arc block 126 will cause the limit frame 121 to vibrate as well. When the damaged door body 2 needs to be replaced, the elastic telescopic block 7 is pushed to the left to disengage from the limit groove 5. The elastic telescopic block 7 disengages from the limit groove 5 and releases the limit on the placement rod 4. After the limit on the placement rod 4 is released, the door body 2 can be disassembled by pressing the placement rod 4 downward.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heat-insulating steel fire door for green buildings, comprising a door frame (1) and a door body (2), characterized in that, It also includes mounting components, buffer components, and limit components; The installation assembly includes a placement groove (3), a placement rod (4), a limiting groove (5), a placement spring (6), an elastic telescopic block (7), a mounting groove (8), a baffle plate (9), and a baffle spring (10). The placement groove (3) is located at the top of the door (2). The placement rod (4) is slidably mounted on the inner wall of the placement groove (3). The limiting groove (5) is located on the circumferential surface of the placement rod (4). The placement spring (6) is located between the placement groove (3) and the placement rod (4). The elastic telescopic block (7) is located on the inner wall of the placement groove (3). The block (7) is fixedly installed on the top of the door frame (1), the mounting groove (8) is opened on the top of the door frame (1), the baffle (9) is slidably installed on the top of the door frame (1), the baffle spring (10) is set between the mounting groove (8) and the baffle (9), the top of the door frame (1) is provided with an installation hole, the elastic telescopic block (7) is used to limit the placement rod (4), the baffle (9) is used to cover the installation hole, and the placement rod (4) is used to limit the door body (2); The buffer assembly is used to prevent the door (2) from colliding, and the limiting assembly is used to keep the door (2) in the open state.

2. The induction-operated heat-insulating steel fireproof door for green buildings according to claim 1, characterized in that, The right side of the elastic telescopic block (7) is set as an inclined surface, the elastic telescopic block (7) is in contact with the limiting groove (5), and the placement rod (4) is in contact with the inner wall of the mounting hole.

3. A sensor-operated, heat-insulating steel fireproof door for green buildings according to claim 2, characterized in that, The door body (2) is in contact with the inner wall of the door frame (1), the baffle plate (9) is in contact with the placement rod (4), and a connection hole is provided on the front side of the door frame (1).

4. A sensor-operated, heat-insulating steel fireproof door for green buildings according to claim 3, characterized in that, The buffer assembly includes a buffer frame (111), a buffer plate (112), a buffer roller (113), a sealing plate (114), a sealing hole (115), an elastic telescopic rod (116), and a mounting hole (117). The buffer frame (111) is fixedly installed on the front side of the door frame (1). The buffer plate (112) is slidably installed on the inner wall of the buffer frame (111). The buffer roller (113) is rotatably installed on the left side of the buffer plate (112). The sealing plate (114) is fixedly installed on the inner wall of the buffer frame (111). The sealing hole (115) is opened on the right side of the sealing plate (114). The elastic telescopic rod (116) is arranged between the buffer plate (112) and the sealing plate (114). The mounting hole (117) is opened on the front side of the buffer frame (111).

5. A sensor-operated, heat-insulating steel fireproof door for green buildings according to claim 4, characterized in that, The buffer frame (111) is provided with fire extinguishing agent, a spring is provided between the buffer roller (113) and the buffer plate (112), and a sealing ring is provided between the buffer frame (111) and the buffer plate (112).

6. A sensor-operated, heat-insulating steel fireproof door for green buildings according to claim 5, characterized in that, The buffer assembly includes a limiting frame (121), a limiting bracket (122), a limiting spring (123), a connecting pipe (124), and a toothed ring (127). The limiting frame (121) is fixedly installed on the top of the door frame (1). The limiting bracket (122) is slidably installed on the inner wall of the limiting frame (121). The limiting spring (123) is disposed between the limiting frame (121) and the limiting bracket (122). The connecting pipe (124) is disposed between the buffer frame (111) and the limiting frame (121). The toothed ring (127) is fixedly installed on the inner wall of the limiting groove (5).

7. A sensor-operated, heat-insulating steel fire door for green buildings according to claim 6, characterized in that, The buffer assembly also includes a connecting hole (125) and an arc-shaped block (126). The connecting hole (125) is located on the right side of the limiting frame (121), and the arc-shaped block (126) is fixedly installed on the inner wall of the limiting frame (121). The connecting hole (125) is used to connect the connecting pipe (124).

8. A sensor-operated, heat-insulating steel fire door for green buildings according to claim 7, characterized in that, A rubber ring is provided between the limiting frame (121) and the limiting bracket (122). Coolant is provided inside the limiting frame (121). A square groove is provided on the front side of the door frame (1). The connecting pipe (124) is in contact with the square groove.

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