Door plate of elevator landing door

Abstract

The utility model discloses an elevator landing door plate which comprises a stainless steel plate outer layer, a bonding layer and a galvanized plate inner layer, a supporting frame is arranged in the galvanized plate inner layer, and heat insulation layers are arranged on the front portion and the rear portion of the supporting frame respectively. The supporting frame comprises an outer frame, a plurality of sets of reinforcing ribs are transversely arranged in the outer frame, a square pipe is welded to the middle position between every two adjacent sets of reinforcing ribs, and notches are formed in the connecting positions of the square pipes and the reinforcing ribs. The inner area of the outer frame is divided into a plurality of subareas through the reinforcing ribs and the square pipes, heat insulation plates are arranged on the front sides and the rear sides of the subareas, compression-resistant springs are arranged between the two heat insulation plates, and the subareas are filled with fireproof rock wool. Round corner structures are arranged at the four corners of the outer frame, and the corners are filled with fireproof rock wool. An anti-corrosion wear-resistant layer is arranged on the surface of the stainless steel plate The utility model has the advantages of favorable heat insulation, fire prevention and compression resistance, stable integral structure and low cost, and is suitable for elevator systems with high safety requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator equipment field, concretely relates to an elevator landing door door plate. BACKGROUND

[0002] The elevator landing door as the important component part in elevator system is directly related to the safety and fireproof performance of elevator. The elevator landing door on the market mostly adopts single material such as stainless steel plate at present, however, in recent years, the price of stainless steel plate material rises greatly, leading to the high cost of elevator manufacturer.

[0003] The structure of traditional elevator landing door is relatively simple, and the heat insulation and fireproof effect is limited, especially in the fire or high temperature environment, the landing door deforms, at this time, the smoke and air in the corridor can be filled into the elevator shaft in large quantities, chimney effect is produced, the fire intensity is enhanced, and personnel safety is influenced. Therefore, providing an elevator landing door door plate with good heat insulation, pressure resistance and fireproof performance becomes an urgent problem to be solved. SUMMARY

[0004] The utility model discloses a kind of elevator landing door door plate, elevator landing door door plate can withstand external impact force and keep structural stability.

[0005] The utility model discloses the technical scheme that the above problems are solved is as follows: a kind of elevator landing door door plate, including stainless steel plate outer layer, adhesive layer and galvanized sheet inner layer, the galvanized sheet inner layer is provided with support frame, and support frame is provided with heat insulation layer in front and back.

[0006] Preferably, the support frame includes an outer frame, a plurality of groups of reinforcing ribs are horizontally arranged in the outer frame, the reinforcing ribs are symmetrically composed of two groups of symmetrical bending parts, the two sides of the bending plate are provided with bending parts, and the heat insulation layer includes a plurality of heat insulation plates, the edges of the heat insulation plates are fixed on the bending parts of the outer frame and the bending plate.

[0007] Preferably, a square tube is welded at the middle position between the two adjacent groups of reinforcing ribs, and a notch is formed in the connecting position of the square tube and the reinforcing rib, and the other end of the square tube connected to the uppermost or lowermost reinforcing rib is fixed on the outer frame.

[0008] Preferably, the reinforcing ribs and the square tube divide the area in the outer frame into a plurality of subareas, one heat insulation plate is arranged on the front and back sides of each subarea, and a plurality of groups of compression springs are arranged between the two heat insulation plates.

[0009] Preferably, the subareas are filled with fireproof rock wool.

[0010] Preferably, the outer frame is provided with a rounded corner structure at each corner, and the rounded corner structure and the cavity in the corner of the galvanized sheet inner layer are also filled with fireproof rock wool.

[0011] Preferably, the outer layer of the stainless steel plate is provided with a corrosion-resistant wear-resistant layer.

[0012] Compared with the prior art, the utility model has the following advantages and effects:

[0013] The utility model discloses a door plate of elevator landing door, which comprises a stainless steel plate outer layer, a galvanized sheet inner layer and an adhesive layer, and is characterized in that the stainless steel plate outer layer is provided with a plurality of reinforcing ribs arranged in a staggered manner.

[0014] In addition, the utility model discloses a door plate structure is filled with fireproof rock wool and is provided with a heat insulation layer, and the heat insulation and fireproof performance of the door plate are greatly improved.

[0015] At the same time, the fillet structure of the four corners of the outer frame and the filling design of the fireproof rock wool further enhance the fire resistance and overall stability of the door plate, effectively avoiding the deformation and damage of the door plate corners.

[0016] In summary, the utility model has remarkable improvement in structural strength, heat insulation performance, fireproof ability, pressure resistance and durability, and overcomes the problems of high material cost, insufficient heat insulation and fireproof effect of the existing elevator landing door, and has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure schematic view of a door plate of an elevator landing door according to an embodiment of the utility model.

[0018] Figure 2 is a partial sectional view of a door plate of an elevator landing door according to an embodiment of the utility model.

[0019] Figure 3 is a structure schematic view of a door plate of an elevator landing door according to an embodiment of the utility model.

[0020] Figure 4 is a partial enlarged schematic view of a door plate of an elevator landing door according to an embodiment of the utility model.

[0021] Fig. No. : stainless steel plate outer layer 11, adhesive layer 12, galvanized plate inner layer 13, support frame 14, heat insulation layer 15, outer frame 21, reinforcing rib 22, bent plate 23, bent part 24, heat insulation plate 25, positioning column 26, positioning hole 27, square tube 31, notch 32, partition 33, compression spring 34, round corner structure 35, fireproof rock wool 36, corrosion-resistant wear-resistant layer 37. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail below by combining with the drawings and through examples, and the following examples are the explanation of the utility model and the utility model is not limited to the following examples.

[0023] Example: see Figure 1 Figure 4 In this embodiment, a kind of elevator landing door door plate is related, it is specifically used to improve the heat insulation, fireproof and compression performance of elevator landing door, especially applicable to the building environment prone to fire and the elevator system with special safety requirements.The door plate is through multilayer structure and reasonable internal design, while improving the strength of door plate structure, it guarantees the heat insulation and fire resistance in fire or high temperature environment, specifically including: stainless steel plate outer layer 11, adhesive layer 12 and galvanized plate inner layer 13, the galvanized plate inner layer 13 is provided with support frame 14, and support frame 14 is provided with heat insulation layer 15 at front and back.

[0024] Specifically, in this embodiment, stainless steel plate outer layer 11 is processed by 0.2mm and above 304 stainless steel plate, and is tightly connected with galvanized plate inner layer 13 by adhesive layer 12, adhesive layer 12 is tightly bonded stainless steel composite plate formed by bonding galvanized plate and stainless steel plate with high molecular material adhesive, and the overall structure has good rigidity and impact resistance.In this embodiment, support frame 14 is used to support the outer shape structure of galvanized plate, and support frame 14 is provided with heat insulation layer 15 at front and back, and heat insulation layer 15 can adopt high-temperature ceramic fiber plate material, has excellent heat insulation performance and fire resistance, effectively slows down the heat generated by fire from one side of landing door door plate to another side, causing adhesive layer 12 to be affected by heat melting and affecting the overall structure.The landing door door plate made of stainless steel composite plate of the utility model has stainless steel plate outer layer 11 on outer surface, and inner layer is composed of galvanized plate, reduces raw material cost under the premise of guaranteeing the strength of landing door door plate, and has good application prospect.

[0025] ​The support frame 14 comprises an outer frame 21, a plurality of reinforcing ribs 22 are arranged transversely in the outer frame 21, the reinforcing ribs 22 are symmetrically composed of two groups of bending portions 24, the two sides of the bending plate 23 are provided with the bending portions 24, and the heat insulation layer 15 comprises a plurality of heat insulation plates 25, the edges of the heat insulation plates 25 are fixed on the outer frame 21 and the bending portions 24 of the bending plate 23. The heat insulation layer 15 is divided into a plurality of heat insulation plates 25, which effectively alleviates the deformation of the large plate during installation. In addition, in the embodiment, a plurality of positioning columns 26 are arranged on the bending portions 24 of the reinforcing ribs 22 and the outer frame 21, and a plurality of positioning holes 27 matched with the positioning columns 26 are arranged on the heat insulation plates 25, so that the heat insulation plates 25 can be accurately positioned during installation, the connection and fixation are ensured, and the heat insulation plates 25 are effectively prevented from falling off when the door plate is impacted.

[0026] A square tube 31 is welded at the middle position between the two adjacent groups of reinforcing ribs 22, and the square tube 31 is provided with a notch 32 at the connection position of the reinforcing ribs 22, and the other end of the square tube 31 connected to the uppermost or lowermost reinforcing rib 22 is fixed on the outer frame 21, wherein the size of the notch 32 is matched with the bending portion 24 of the reinforcing rib 22, and the heat insulation plates 25 at the square tube 31 are staggered and fixed by rivets, which improves the sealing performance and effectively isolates the dense smoke and heat generated by the fire.

[0027] The reinforcing ribs 22 and the square tubes 31 divide the area in the outer frame 21 into a plurality of partitions 33, one heat insulation plate 25 is arranged on the front and back sides of each partition 33, and a plurality of compression springs 34 are arranged between the two heat insulation plates 25. The compression springs 34 not only can absorb external impact and prevent the heat insulation plates 25 from being deformed due to compression, but also can effectively maintain the stability of the space in the partition 33. In actual use, when the elevator landing door is impacted from the outside, the compression springs 34 can absorb energy through elastic deformation to ensure the structural integrity of the heat insulation plates 25 and further improve the compression resistance and deformation resistance of the door plate.

[0028] In order to enhance the fireproof performance, the partitions 33 are filled with fireproof rock wool 36. As an excellent fireproof material, the fireproof rock wool 36 has good high-temperature resistance. In the event of a fire, the rock wool can effectively block the transmission of high temperature to the internal structure of the door plate, prevent the door plate from deforming, delay the spread of the fire, and ensure the heat insulation effect and fireproof performance of the elevator door. If a trapped elevator situation occurs during a fire, the elevator landing door can provide longer safety protection in the fire through the fireproof rock wool 36, which wins valuable time for rescue work.

[0029] The four corners of the outer frame 21 are provided with a round corner structure 35, and the cavity in the corner of the inner layer 13 of the galvanized sheet is also filled with fireproof rock wool 36. The round corner structure 35 is provided to make the outer frame 21 and the four corners of the galvanized sheet have a cooperation gap, so as to facilitate the installation of the outer frame 21 on the inner layer 13 of the galvanized sheet. In addition, the gap is filled with the fireproof rock wool 36, which can further improve the fire resistance of the four corner regions and ensure the overall fireproof and deformation resistance of the door plate.

[0030] The outer layer 11 of the stainless steel plate is provided with a corrosion-resistant wear-resistant layer 37. In the embodiment, the corrosion-resistant wear-resistant layer 37 can be an epoxy resin coating, so as to enhance the durability of the door plate. The corrosion-resistant wear-resistant layer 37 can effectively prevent the corrosion of the outer layer 11 of the stainless steel plate by moisture, salt or chemical substances in the air, thereby prolonging the service life of the elevator landing door. In addition, the epoxy resin coating not only has corrosion resistance, but also provides certain wear protection, reduces surface damage caused by friction and collision in the daily use of the elevator, keeps the appearance of the door plate clean, and reduces the maintenance cost in the later period.

[0031] The above described in the specification of the present application is only an example of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as it does not deviate from the content of the specification of the present application or exceed the scope defined by the claims, which shall belong to the protection scope of the present application.

Claims

1. An elevator landing door panel, characterized in that The stainless steel plate outer layer, the adhesive layer and the galvanized plate inner layer are provided with a support frame, and the front and back of the support frame are provided with heat insulation layers; The support frame comprises an outer frame, a plurality of groups of reinforcing ribs are horizontally arranged in the outer frame, the reinforcing ribs are symmetrically composed of two groups of symmetrical bending parts, the two sides of the bending plate are provided with bending parts, the heat insulation layer comprises a plurality of heat insulation plates, the edges of the heat insulation plates are fixed on the bending parts of the outer frame and the bending plate; A square tube is welded at the middle position between the two adjacent groups of reinforcing ribs, and a notch is formed in the connecting position of the square tube and the reinforcing rib, and the other end of the square tube connected to the uppermost or lowermost reinforcing rib is fixed on the outer frame; The reinforcing ribs and the square tube divide the area in the outer frame into a plurality of subareas, one heat insulation plate is arranged on the front and back of each subarea, and a plurality of groups of compression springs are arranged between the two heat insulation plates.

2. An elevator landing door panel according to claim 1, characterized in that: The subareas are filled with fireproof rock wool.

3. An elevator landing door panel according to claim 2, characterized in that: The four corners of the outer frame are provided with round corner structures, and the cavities in the corners of the galvanized plate inner layer are also filled with fireproof rock wool.

4. An elevator landing door panel according to claim 3, characterized in that: The surface of the stainless steel plate outer layer is provided with a corrosion-resistant and wear-resistant layer.

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