CN211900319U

CN211900319U - Armoured fireproof door leaf

Info

Publication number: CN211900319U
Application number: CN202020147912.2U
Authority: CN
Inventors: 王启军; 杨照军; 庄文红; 吴海兵; 胡立平
Original assignee: Zhuhai Hua Yan Wood Co ltd
Current assignee: Zhuhai Hua Yan Wood Co ltd
Priority date: 2020-01-23
Filing date: 2020-01-23
Publication date: 2020-11-10
Anticipated expiration: 2030-01-23

Abstract

The utility model relates to an armoured fire door leaf. The armored fireproof door leaf comprises a door core plate, inner and outer armor door sheets arranged on the inner side and the outer side of the door core plate respectively, a covered edge arranged on the periphery of the door core plate and a smoke-proof strip arranged on the covered edge, wherein the door core plate comprises a square frame formed by long and short frameworks through rivet-free riveting and two door core cover plates arranged on the front side and the rear side of the square frame, one of the door core cover plates is connected with the square frame through rivet-free riveting, the other door core cover plate is riveted with the square frame through a pull nail, and the door core plate is riveted with the covered edge through the pull nail. The utility model has the advantages of door leaf simple structure, make things convenient for assembly line volume production operation etc.

Description

Armoured fireproof door leaf

Technical Field

The utility model relates to a fire-resistant building opening closing device specifically relates to an armoured fire door leaf.

Background

The existing armored fire door has a complex and simple structure and a great difference, and the manufacturing process is designed in a mode of connecting spot welding and screws. In the manufacturing process of the door core plate, the framework and the door core cover plate both adopt a spot welding mode, such as the technical scheme disclosed by the Chinese patent CN 101377113B; in the manufacturing process of the door leaf, the connection mode of the edge covering and the door core plate adopts a screw or self-tapping screw connection mode. The strength of spot welding and screw connection can meet the requirement, but the manufacturing process is more complicated, and the assembly line mass production is not facilitated.

Disclosure of Invention

The utility model aims at providing a simple structure just is applicable to the armoured fire door leaf of streamlined production.

In order to realize foretell first purpose, the utility model provides an armoured fire door leaf, include a door core, locate respectively the inside and outside both sides of door core inside and outside the armor door leaf, locate door core bordures all around and locates bordure the upper smoke protection strip, the door core includes a square frame that forms and locates through the rivetless riveting by long, short skeleton two door core apron of both sides around the square frame, one in the door core apron through the rivetless riveting with square frame connects, another of door core apron pass through the blind rivet with square frame rivets, the door core with bordure through the blind rivet riveting.

According to the scheme, the internal structure of the armored fireproof door leaf is greatly simplified; and the majority of the connection between the components adopts the rivet-free riveting, and the other part of the connection is riveted by the blind rivet in the place which is not suitable for the rivet-free riveting, thereby simplifying the production and manufacturing process of the door leaf and being particularly suitable for the modern assembly line operation.

Drawings

Fig. 1 is a cross-sectional view of the armored fire-proof door leaf of the present invention.

Fig. 2 is a schematic view of a square frame of the armored fireproof door leaf of the present invention.

Fig. 3 is a cross-sectional view of the square frame of fig. 2 taken along line a-a.

Fig. 4 is an enlarged view of the riveted joint, i.e., the circled area, in fig. 3.

FIG. 5 is a schematic view of the square frame of FIG. 2 after riveting a door core cover plate.

Fig. 6 is an enlarged view of the riveted joint between the square frame and the door core cover plate of fig. 5, i.e., in the circled area.

FIG. 7 is a schematic view of a square frame riveted to another door core cover plate.

Fig. 8 is a longitudinal side view of a door core panel.

Fig. 9 is a partial enlarged view taken along a-a in fig. 8.

Fig. 10 is a partial enlarged view taken along B-B in fig. 8.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

It should be noted that, unless otherwise specified, the following description of the orientation is based on the vertical state of the door leaf when in use.

Referring to fig. 1, the armored fire door leaf 100 mainly includes a door core plate 20 located at the middle, an outer armor plate 9 and an inner armor plate 1 located at the front and rear sides of the door core plate 20, respectively, and a binding 6 located around the door core plate 20. The door core plate 20 and the edge cover 6 are connected by the pull nails 7, and the positions of the pull nails 7 are arranged in the grooves 61 of the edge cover 6. The attachment point of the blind rivet 7 to the tipping 6 is completely concealed by the smoke barrier 8 located within the recess 61, in order to make the product more aesthetically pleasing.

The door core panel 20 (fig. 8) is a rectangular parallelepiped, and includes a rectangular frame 21 (fig. 2) formed of long and short frames, two door core cover panels 4 provided on the front and rear sides of the rectangular frame, and an inner core material 5 filled in the panel and having a heat-insulating and fireproof function. The inner core material is preferably a perlite plate which is fireproof and has high strength. One of the door core cover plates 4 is connected with the square frame through rivet-free riveting, and the other door core cover plate 4 is riveted with the square frame through a rivet 7. The door core plate 20 is a fully-riveted steel door core, so that the related traditional operations such as welding, screw connection and the like are avoided, and the production line processing with faster rhythm is facilitated.

The following describes the manufacturing method of the armored fireproof door leaf of the present invention.

First, the various components are prepared. Specifically, the framework, the wrapping edges and the door core cover plate are subjected to whole-plate blanking by a laser cutting machine, used hole sites are processed, and bending forming is carried out on the numerical control bending machine. Specifically, the folded long framework has a U-shaped cross section, and the opening on the fourth surface is closed on three surfaces when viewed from the side; the short framework has a U-shaped section with two internal curled edges, and the opening of the other side part is closed from three sides when viewed from the side. The design of the internal bead can further increase the structural strength of the profile. The structure and the size of the framework meet the process requirement of the nail-free riveting. The structure and the size of the door core cover plate meet the process requirements of the nail-free riveting. The four sides of the door core cover plate are turned at right angles, and the turned edges are mainly used for connecting the door core cover plate with the square frame. The material of the tipping 6 is 304 stainless steel 1.0mm thick. The blind rivet 7 is made of steel blind rivet with the diameter of 4.0 mm.

Because modern processing equipment is adopted for blanking, forming and the like, the production line is greatly facilitated, and the requirement of mass production is met.

Next, door core panel manufacturing steps are performed, comprising:

step 11, inlaying the end part of the short framework in the end part of the long framework, and performing rivet-free riveting in the overlapping area of the short framework and the long framework to form a square frame 21 shown in fig. 2;

step 12, connecting a door core cover plate 4 with the square frame 21 through rivet-free riveting, so as to seal one surface of the square frame, and then forming a box body with one open surface as shown in fig. 5;

step 13, filling a fireproof core material 5 in the box body;

step 14, riveting the other door core cover plate 4 with the square frame 21 through a rivet 7, as shown in fig. 7, so as to seal the opening of the box body, thereby forming a cubic solid door core plate with six closed surfaces;

and step 15, performing cold press molding on the cubic solid door core.

The door core plate 20 is made of heat-insulating fireproof materials, and the selected materials reach the highest level specified in GB8624-2012 'building material and product combustion performance grade', namely, the A1 level standard of non-combustible materials. In this embodiment, the door core cover plate is made of 0.8mm galvanized sheet, the long framework is made of 1.5mm galvanized sheet, and the short framework is made of 1.0mm galvanized sheet.

The U.S. BTM round dot non-nail riveting 4.6mm series female die split structure die is selected as the non-nail riveting die. Under the condition of not damaging the riveting point, according to the tensile and shear failure test of the riveting point with different bottom thickness values, the applicant obtains that the connection strength state of the nailless riveting point reaches the maximum value within the range of 1/3 +/-15 percent of the bottom thickness value (X) of the riveting point as the material combination thickness.

In this embodiment, the combination of the nailless riveting materials composed of the thicknesses of the materials is a combination of two materials, namely, 0.8+1.5 and 1.5+ 1.0. And (3) manufacturing two groups of material combined nail-free riveting samples, adjusting the input pressure of a hydraulic cylinder, and controlling the bottom thickness value (X) of the riveting point within a range of the thickness of the material combination to carry out tensile and shear strength failure test. The strength reaches a maximum when the rivet point bottom thickness (X) is controlled to 1/3 ± 15% of the combined material thickness. Through experiments, the tensile strength of the 0.8+1.5 material combination reaches more than 90KG, and the shear strength reaches more than 110 KG; the tensile strength of the 1.5+1.0 material combination reaches more than 100KG, and the shear strength reaches more than 120 KG.

In step 11, the number of the long and short skeletons is a pair. The long framework corresponds to the serging and the hinge edge of the door leaf, and the short framework corresponds to the upper end and the lower end of the door leaf. The short framework is embedded in the long framework, so that the combination firmness of the frameworks can be improved, and the stress of the riveting point is mainly shear stress. Referring to fig. 2 to 4, the square frame 21 has at least one rivet 23 at each of four corners on both front and rear sides, i.e., in a region where the long and short frames overlap. The riveted joint 23 is a sunken circular interlocking reverse formed directly on the material by means of a clinch without a nail. These rivet points 23 are located on both front and rear sides of the square frame 21.

In step 12, the distance between the riveting point 24 of the door core cover plate 4 and the square frame 21 is about 300mm, and in the riveting process, the position of the lock body and the position of the hinge reinforcing plate are avoided, so that 7 to 8 riveting points on the single side of the door core cover plate and the square frame 21 are ensured, and the connection strength of the square frame and the single side of the door core cover plate is 600 KG. Referring to fig. 5 and 6, the rivet point 24 of the door core cover plate 4 and the square frame is located on the outer peripheral side of the square frame 21, i.e. the bottom of the U-shaped groove of the long framework 2, and is located above the curled edge of the door core cover plate 4.

In step 13, before filling the fireproof core material, the cavity of the box body is preferably coated with fireproof glue in order to fix the fireproof core material at a predetermined position. In step 14, the inner surface of the other door core covering is preferably also coated with a fire-retardant glue before riveting. The purpose of the glue application is to make the parts more tightly bonded.

Through the step 15, the fireproof core material 5 is combined with the square frame 21 and the door core cover plate 4 more tightly; at the same time, the entire door core panel 20 is more regular.

Through the above steps, a door core panel is obtained, as shown in fig. 8 to 10. Since the door core cover plate 4 covers the square frame 21 from the front and rear sides, the riveting points 23 of the square frame 21 are all covered by the door core cover plate 4. The rivet points 23 and 24 are on different surfaces, so that stress concentration can be avoided, and the appearance of the door core plate can be more beautiful.

After the door core board is complete, the step of combining the door core board and the peripheral components is carried out, and the method comprises the following steps:

step 21, gluing the armored door sheets 1 and 9 with the door core plate 20;

step 22, assembling the edge-covered edges 6 around the door leaf, and riveting the square frame 20, the door core cover plate 4 and the edge-covered edges 6 together by using the pull nails 7;

and 23, adhering the smoke prevention bars 8.

The number of pull nails used in step 22 is: the lock edge and the hinge edge of the door leaf are riveted with 10-12 pieces respectively, and the upper end and the lower end are respectively 6 pieces. The pull nail sample is made by combining the three materials, and the tensile strength and the shear strength of the pull nail sample are respectively more than 100KG and more than 120KG after testing.

And (5) obtaining a final product through the steps. According to the utility model discloses fire door test sample board is prevented to armoured of preparation sends national fire control product detection center (Guangzhou center), prevents fire door "according to GB12955-2015 and detects fire door fire-resistant complete and heat-proof quality's requirement, through the 90 minutes test, fire-resistant integrality accords with the requirement of national standard with heat-proof quality.

Claims

1. The utility model provides an armoured fire door leaf, includes a door core, locates respectively the inside and outside armoured door piece of both sides of door core, locate door core bordures all around and locates prevent the cigarette strip on borduring, its characterized in that:

the door core plate comprises a square frame formed by long and short frameworks through rivet-free riveting and two door core cover plates arranged on the front side and the rear side of the square frame, one of the door core cover plates is connected with the square frame through rivet-free riveting, the other door core cover plate is riveted with the square frame through a pull nail, and the door core plate is riveted with the edge covering through the pull nail.

2. The armored fire door leaf of claim 1, wherein: the riveting points between the long framework and the short framework are located on the front side and the rear side of four corners of the square framework and are covered by the door core cover plate, the door core cover plate and the riveting points of the square framework are located on the periphery of the square framework and are covered by the covering edge, the covering edge is provided with a groove, the smoke-proof strip is arranged in the groove, and the door core plate and the riveting points of the covering edge are arranged in the groove and are covered by the smoke-proof strip.

3. The armored fire door leaf of claim 1, wherein: the long framework, the short framework and the door core cover plate are made of galvanized plates; the bottom thickness (X) of the riveting point formed by the rivetless riveting is one third of the combined thickness of the riveting materials, and the bottom thickness is allowed to vary within a numerical range of 15 percent from top to bottom.

4. Armoured fire door leaf according to claim 2 or 3, characterized in that: the long framework is provided with a U-shaped cross section, the short framework is provided with a U-shaped cross section with an inward curled edge, the end part of the short framework is embedded in the long framework at the corner part of the square framework, and the riveting point between the long framework and the short framework is positioned in the embedding area between the long framework and the short framework.

5. Armoured fire door leaf according to claim 2 or 3, characterized in that: the door core plate is filled with perlite plates in a space formed by the square frame and the door core cover plate.