Platform door body with fireproof function
By adopting the design of laminated glass structure and fire-proof expansion strips, the fire-proof function of the platform door and the problem of finger pinching in the gap are solved, which enhances safety and production efficiency in the event of fire and reduces the risk of finger pinching.
Patent Information
- Application Number
- CN202510774057.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-09-19
AI Technical Summary
Most existing platform doors do not have fireproof functions, and the platform doors with snap-on fixed glass have the risk of pinching hands in the gaps, causing safety hazards and the risk of finger pinching in the event of a fire.
It adopts a laminated glass structure, consisting of ordinary tempered glass on the inside and high borosilicate glass on the outside. The outside is equipped with a rib and fire-proof expansion strips. The inner and outer glass are fixed by adhesive. The fire-proof expansion strips expand to form a seal during a fire. The rib fixes the glass, and the gap is less than 5mm to prevent fingers from being pinched.
Without changing the glass bonding method, the fire protection function is enhanced, production costs are reduced, safety hazards and finger pinching risks in the event of a fire are eliminated, and production efficiency is improved.
Smart Images
Figure CN120667002A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of rail transit door systems, and in particular to a platform door body with a fire prevention function. Background Art
[0002] In existing technology, subway platforms are often equipped with platform doors that separate the trackside from the platform side. These doors effectively prevent passengers from entering the track area, thereby preventing accidents. However, most existing platform doors lack fire protection or use snap-on fixed glass, which can cause hand pinching.
[0003] Most platform doors in the existing technology do not have fire-proof functions: since most platform doors adopt the bonding method of door frame and tempered glass, once a fire occurs, the glass will fall off after the adhesive fails, and the tempered glass itself does not have fire-proof function and is prone to cracking when a fire occurs, thus causing safety hazards during the fire.
[0004] The platform doors in the existing technology use fire-resistant platform doors with snap-on fixed glass, which has the problem of pinching fingers in the gap: although the fire-resistant platform doors with snap-on fixed glass use fire-resistant glass, since the glass is fixed by snap-on installation, space for buffer strips and rigid structures needs to be reserved on the front surface of the glass, resulting in a gap between the sliding door body and the column greater than 6mm, which does not meet the safety gap requirements. There is a risk of pinching fingers during the operation of the sliding door.
[0005] Therefore, it is necessary to develop a new type of platform door body to overcome the above problems. Summary of the Invention
[0006] Purpose of the invention: In view of the shortcomings and defects of the existing technology, the present invention provides a platform door body with fire protection function, which can effectively solve the problem of the safety gap of the sliding door body while providing fire isolation function, thereby eliminating the risk of pinching fingers during the operation of the sliding door.
[0007] Technical solution: The platform door body with fireproof function of the present invention is characterized in that: it includes door body glass and columns, the door body glass is connected to the door frame by adhesive, a rib is provided on the outside of the door body glass, a fireproof expansion strip 1 is provided between the door body glass and the rib, a fireproof expansion strip 2 and an adhesive sealing strip are provided between the door body glass and the door frame; the column is provided with an anti-pinch strip, the upper part of the edge of the column is the lintel, a gap is formed between the column and the lintel, and the movable door body performs reciprocating translational motion within a predetermined range behind the column and the lintel.
[0008] Among them, the movable door body is a rectangular structure, and the movable door body includes a door frame, door glass, a second fire-proof expansion strip, an adhesive sealing strip, adhesive glue, a first fire-proof expansion strip and a retaining edge.
[0009] The cross-section of the door frame is in the shape of a U, and the door frame is formed by connecting four long strips of profiles end to end.
[0010] The door glass is laminated glass consisting of ordinary tempered glass on the inside and high borosilicate glass on the outside.
[0011] Wherein, the door body glass adopts a stepped form, and the inner glass and the outer glass are fixed on the door frame by adhesive.
[0012] The retaining edge is a rectangular structure, which is formed by connecting four profiles end to end. The retaining edge seals the door glass on all sides and assists in supporting the door glass.
[0013] The second fireproof expansion strip is a rectangular structure, and is formed by connecting four graphite strips end to end.
[0014] Among them, the second fire-proof expansion strip and the first fire-proof expansion strip will not burn when exposed to open flames but will expand; when a fire occurs, the second fire-proof expansion strip blocks the open flame from contacting the adhesive, forming a seal between the door frame and the door body glass to prevent smoke from passing through; when a fire occurs, the first fire-proof expansion strip forms a seal between the retaining edge and the door body glass to prevent smoke from passing through.
[0015] The retaining edge is located around the outer side of the door glass, and the gap between the door glass and the anti-pinch rubber strip is less than 5mm to prevent fingers from entering this area.
[0016] Beneficial Effects: Compared to existing technologies, this invention offers the following significant advantages: By modifying the door structure, without changing the existing glass bonding method, the fire protection function of the platform door is achieved at a relatively low cost, effectively enhancing the fire protection function and increasing safety in the event of a fire on the platform or track side. Furthermore, compared to snap-on fire-resistant platform doors, this invention significantly improves production efficiency and reduces production costs, effectively eliminating the risk of finger pinching during door operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the present invention;
[0018] Figure 2 It is a schematic diagram of the local structure of the present invention;
[0019] In the figure, 1 is the door frame; 2 is the door body glass; 3 is the column; 4 is the door lintel; 5 is ordinary tempered glass; 6 is high borosilicate glass; 7 is the second fire-proof expansion strip; 8 is the adhesive sealing strip; 9 is the adhesive glue; 10 is the first fire-proof expansion strip; 11 is the side guard; 12 is the anti-pinch strip; 13 is the movable door body. DETAILED DESCRIPTION
[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0021] The platform door body with fireproof function of the present invention includes a door body glass 2 and a column 3. The door body glass 2 is connected to the door frame 1 by adhesive 9. A retaining edge 11 is provided on the outside of the door body glass 2. A fireproof expansion strip 10 is provided between the door body glass 2 and the retaining edge 11. A fireproof expansion strip 2 7 and an adhesive sealing strip 8 are provided between the door body glass 2 and the door frame 1; an anti-pinch strip 12 is provided on the column 3, and the upper part of the edge of the column 3 is the lintel 4. A gap is formed between the column 3 and the lintel 4, and the movable door body 13 performs reciprocating translational motion within a predetermined range behind the column 3 and the lintel 4.
[0022] Example:
[0023] In this embodiment, the entire platform edge is equipped with this structural fireproof platform door, effectively isolating the platform side from the track side to form a platform fire barrier:
[0024] The movable door body 13 of this embodiment is a rectangular structure and includes a door frame 1, door glass 2, fire-resistant expansion strip 2 7, adhesive sealing strip 8, adhesive 9, fire-resistant expansion strip 10, and sidewall 11. The door frame 1 has a square cross-section and is formed by connecting four long strips of profiles end to end. The profiles are preferably made of heat-resistant alloy.
[0025] The door glass 2 is laminated, consisting of ordinary tempered glass 5 on the inside and borosilicate glass 6 on the outside. The borosilicate glass 6 on the outside has excellent heat resistance and will not crack at high temperatures. The door glass 2 is stepped, with adhesive 9 securing the inner and outer glass 5, 6 to the door frame 1. This ensures that even if the inner glass 5 cracks due to heat, the outer glass 6 still effectively forms a glass barrier.
[0026] A rib 11 is provided on the outside of the door glass 2. The rib 11 is a rectangular structure, preferably made of heat-resistant alloy. The rib 11 is formed by connecting four profiles end to end. The rib 11 seals the door glass 2 on all sides and assists in supporting the door glass 2. When the adhesive 9 around the door glass fails in the event of a fire, it can effectively fix the glass to prevent it from falling off.
[0027] A fireproof expansion strip 27 is provided between the door body glass 2 and the door frame 1. The fireproof expansion strip 27 is a rectangular structure, and is formed by four graphite strips connected end to end. It does not burn when exposed to open flames, but expands, so that when a fire occurs, it prevents the open flame from contacting the adhesive 9, and forms a seal between the door frame 1 and the door body glass 2, blocking the passage of smoke; and the expanded volume can more firmly fix the door body glass 2 between the door frame 1 and the retaining edge 11. A fireproof expansion strip 10 is provided between the door body glass 2 and the retaining edge 11. The fireproof expansion strip 10 does not burn when exposed to open flames, but expands, effectively filling the gap between the retaining edge 11 and the glass 2, blocking the passage of smoke.
[0028] The retaining edge 11 is located around the outer side of the door glass 2. The gap G between the door glass 2 and the anti-pinch rubber strip 12 is less than 5 mm, which prevents fingers from entering this area and can effectively prevent fingers from being pinched.
[0029] By modifying the door structure, this invention achieves fire protection at a lower cost without changing the original glass bonding method. This effectively enhances fire protection and increases safety in the event of a fire on the platform or trackside. Furthermore, compared to snap-on fire-resistant platform doors, this invention significantly improves production efficiency and reduces costs, effectively eliminating the risk of finger pinching during door operation.
Claims
1. A platform door body with fire protection function, characterized by: The invention comprises a door body glass (2) and a column (3), wherein the door body glass (2) is connected to the door frame (1) by means of adhesive (9), a retaining edge (11) is provided on the outer side of the door body glass (2), a first fireproof expansion adhesive strip (10) is provided between the door body glass (2) and the retaining edge (11), and a second fireproof expansion adhesive strip (7) and an adhesive sealing adhesive strip (8) are provided between the door body glass (2) and the door frame (1); an anti-pinch adhesive strip (12) is provided on the column (3), the upper part of the edge of the column (3) is the door lintel (4), a gap is formed between the column (3) and the door lintel (4), and the movable door body (13) performs reciprocating translational motion within a predetermined range behind the column (3) and the door lintel (4).
2. The platform door body with fire protection function according to claim 1 is characterized in that: The movable door body (13) is a rectangular structure, and the movable door body (13) includes a door frame (1), a door glass (2), a second fireproof expansion strip (7), an adhesive sealing strip (8), an adhesive (9), a first fireproof expansion strip (10) and a retaining edge (11).
3. The platform door body with fire protection function according to claim 1 is characterized in that: The cross-section of the door frame (1) is in the shape of a square. The door frame (1) is formed by connecting four long strips of profiles end to end.
4. The platform door body with fire protection function according to claim 1 is characterized in that: The door body glass (2) is a laminated glass composed of ordinary tempered glass (5) on the inner side and high borosilicate glass (6) on the outer side.
5. The platform door body with fire protection function according to claim 4 is characterized in that: The door body glass (2) is in a stepped form, and the inner glass (5) and the outer glass (6) are fixed to the door frame (1) by adhesive (9).
6. The platform door body with fire protection function according to claim 1 is characterized in that: The retaining edge (11) is a rectangular structure, and is formed by connecting four profiles end to end. The retaining edge (11) seals the door glass (2) on all sides and assists in supporting the door glass (2).
7. The platform door body with fire protection function according to claim 1 is characterized in that: The fireproof expansion strip 2 (7) is a rectangular structure, and the fireproof expansion strip 2 (7) is formed by connecting four graphite strips end to end.
8. The platform door body with fire protection function according to claim 7 is characterized in that: The fireproof expansion strip 2 (7) and the fireproof expansion strip 1 (10) will not burn when exposed to open flames but will expand; when a fire occurs, the fireproof expansion strip 2 (7) blocks the open flame from contacting the adhesive (9), forming a seal between the door frame (1) and the door body glass (2) to prevent smoke from passing through; when a fire occurs, the fireproof expansion strip 1 (10) forms a seal between the retaining edge (11) and the door body glass (2) to prevent smoke from passing through.
9. The platform door body with fire protection function according to claim 1 is characterized in that: The retaining edge (11) is located around the outer side of the door glass (2), and the gap between the door glass (2) and the anti-pinch rubber strip (12) is less than 5 mm, preventing fingers from entering this area.