CN117988514A - Metal roofing with fire behavior - Google Patents

Abstract

The invention relates to the technical field of fireproof roof construction, and discloses a metal roof with fireproof performance, which specifically comprises a roof inner plate and a roof outer plate, wherein the roof inner plate is paved on the top of a roof purline, the roof inner plate and the roof outer plate are fixedly connected through a plurality of supporting pieces, the upper parts of the supporting pieces are covered with heat insulation cotton to form a heat insulation layer, and a heat insulation cavity is formed by the outlines of the supporting pieces, so that the heat insulation layer wraps the heat insulation cavity to separate heat conduction, a waterproof piece is paved between the roof outer plate and the heat insulation layer, meanwhile, a first fireproof piece is also arranged at the joint of the roof inner plate and each supporting piece, a heat insulation structure is formed on the surface of the roof inner plate to block a cold bridge or a heat bridge, and an effective high Wen Zuhuo surface is formed, so that the problem that a fireproof isolation belt is required to be added or a fire wall is required to be made into the roof is solved effectively.

Description

Metal roofing with fire behavior

Technical Field

The invention relates to the technical field of fireproof roof construction, in particular to a metal roof with fireproof performance.

Background

Requirements for fire resistance limits for roofing in "building design fire Specification" GB50016-2014 (2018 edition) 6.1.1: the fire protection wall should be directly arranged on the foundation of the building or the bearing structures such as the frame, the beam and the like, and the fire resistance limit of the bearing structures such as the frame, the beam and the like should not be lower than the fire resistance limit of the fire protection wall. The firewall should partition from the floor base to the underside base of the beam, floor or roof panel. When the fire resistance limit of the roof bearing structure and the roof board of the high-rise factory building (warehouse) is lower than 1.00h, and the fire resistance limit of the roof bearing structure and the roof board of other buildings is lower than 0.50h, the fire wall is higher than the roof by more than 0.5 m.

To meet the above requirements, many design units, construction units and the like make fire-proof walls into roofs, which causes the cost of the metal roof system to rise (such as the large number of edges of the roofs to increase, the fire-proof wall facing to increase and part of drainage systems to be interrupted by fire-proof walls to require multiple sets of drainage systems), and the overall performance of the metal roof to be deteriorated due to the complicating construction. In order to solve the problems caused by the fact that the fire-proof wall is out of the roof, part of design units and construction units can replace the fire-proof wall by adopting the method that two ends of the fire-proof wall are respectively extended to be 2m wide, but the replacement is not completely in line with the fire-proof standard requirements on one hand, on the other hand, the self weight of the structure is increased, the site construction is difficult, the fire-proof blocking is not tight, and a series of problems such as smoke-proof window are prevented from being blocked by the extended suspended ceiling.

In view of the foregoing, a new metal roofing is needed to solve the above problems.

Disclosure of Invention

Aiming at the technical problems, the invention aims to provide the metal roof with the fireproof performance, which can effectively solve the problem that fireproof isolation belts are required to be added or the cost of a fire wall for making the roof is required to be linearly increased because the metal roof does not have the fireproof performance, and is beneficial to improving the fireproof performance of the metal roof.

In order to achieve the above object, the present invention provides a metal roofing with fireproof performance, comprising:

a roof inner plate and a roof outer plate, wherein the roof inner plate is supported on the roof purline;

The support pieces are arranged along the laying direction of the roof purlines and are used for connecting the roof inner plate and the roof outer plate;

The heat insulation cotton is filled outside the supporting piece to form a heat insulation layer, a heat insulation cavity is formed by the outline of the supporting piece, the heat insulation layer wraps the heat insulation cavity, and the heat insulation cavity is used for blocking heat conduction;

The first fireproof piece is positioned at the joint of the inner roof plate and each supporting piece and is limited between the supporting pieces and the inner roof plate so as to form a heat insulation structure of the metal roof together with the heat insulation cavity, and the heat insulation structure is used for blocking a cold bridge or a hot bridge.

In some embodiments, a number of the supports each have a combined use state and an independent use state; in the combined use state, the support member includes a first support member and a second support member.

In some embodiments, in the combined use state,

The extending direction of the first supporting piece is perpendicular to the extending direction of the second supporting piece, and the first supporting piece and the second supporting piece are arranged in a stacked mode along the height direction and fixedly connected;

The roof outer plate is connected with the first supporting piece, and the roof inner plate is connected with the second supporting piece.

In some embodiments, the first support forms a first end face and a second end face corresponding to each other through a zigzag bending, the first end face is connected with the outer roof panel, and a part of the heat insulation layer is clamped between the first end face and the outer roof panel, and the second end face is connected with the second support;

The heat insulation cavities corresponding to the first supporting pieces form double-sided cavities along a Z-shaped outline.

In some embodiments, the insulation layer is distinguished by the second end face as a first insulation layer and a second insulation layer, the first insulation layer being positioned at a higher level than the second insulation layer, the first insulation layer having a cross-sectional width that is greater than or equal to the cross-sectional width of the second insulation layer.

In some embodiments, the second supports each comprise a top panel and two side panels;

The two side plates are respectively connected to the two ends of the top plate in an inclined mode, the two side plates are provided with bending sections, the bending directions of the bending sections are far away from the top plate, the overall outline of the second supporting piece is in a pi shape, and the corresponding heat insulation cavity is formed through the surrounding areas of the top plate and the two side plates;

The first supporting piece is connected with the top plate, and the roof inner plate is connected with the corresponding bending section.

In some embodiments, the support that is used as a primary support in the stand-alone state of use;

The main support piece is provided with a first section, a middle section and a tail section which are connected in sequence, wherein the first section, the middle section and the tail section are in turning transition;

the first section is correspondingly connected with the outer roof plate, and the tail section is correspondingly connected with the inner roof plate.

In some embodiments, the thermal insulation layer comprises an upper layer of thermal insulation cotton, a middle layer of thermal insulation cotton and a lower layer of thermal insulation cotton, wherein the upper layer of thermal insulation cotton, the middle layer of thermal insulation cotton and the lower layer of thermal insulation cotton are sequentially distributed along the height direction of the main support;

The first section is surrounded by the upper layer heat insulation cotton and the middle layer heat insulation cotton, the middle section is arranged on the middle layer heat insulation cotton in a penetrating mode, and the tail section is surrounded by the middle layer heat insulation cotton, the lower layer heat insulation cotton and the first fireproof piece.

In some embodiments, the primary support has a projection and a non-projection;

The protruding part protrudes towards the direction of the roof inner plate so as to form a continuous groove on the main support piece, the groove extends from the root part of the non-protruding part, a dent is formed between the non-protruding part and the outer wall of the groove, and the dent is used for providing a stuffing space for the heat insulation cotton.

In some embodiments, a waterproof member is also provided between the insulating layer and the roof outer panel;

The roof inner plate is a continuous wavy outline, and the wavy outline is at least partially connected with the heat insulation layer, so that a plurality of auxiliary heat insulation cavities are formed between the roof inner plate and the heat insulation layer.

Compared with the prior art, the metal roof with the fireproof performance has the following beneficial effects:

1. According to the metal roof with the fireproof performance, two layers of materials for fireproof heat insulation are integrated into the metal roof, one layer of the fireproof materials is arranged at the joint of the inner plate of the roof and the supporting piece, the fireproof performance of the joint is improved in a targeted manner aiming at the fireproof weak point of the joint, and the other layer of the heat insulation layer formed on the periphery of the supporting piece can ensure the fireproof performance of the roof and effectively improve the heat insulation capacity of the metal roof.

2. According to the metal roof with the fireproof performance, the overall supporting performance of the metal roof is improved in a mode of combining different supporting pieces, and meanwhile, a plurality of heat insulation cavities are formed through the supporting pieces, so that the metal roof has more efficient heat insulation and heat preservation effects.

3. The metal roof with the fireproof performance provided by the invention utilizes rock wool or aluminum silicate wool with better fireproof performance, can utilize the natural fireproof advantages of the two materials, and simultaneously rationalizes the cost.

Drawings

The above features, technical features, advantages and implementation of the present invention will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clear and easily understood manner.

FIG. 1 is a schematic view of the overall structure of a metal roof in accordance with one embodiment of the present invention;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

FIG. 3 is a schematic view of the overall structure of a metal roof according to another embodiment of the present invention;

FIG. 4 is a cross-sectional view at B-B in FIG. 3;

FIG. 5 is a detail view of a first support member in one embodiment of the invention;

Fig. 6 is a detail view of a second support member in one embodiment of the invention.

Reference numerals illustrate: a roof inner panel 1; a waterproof member 2; a first fire protection member 3; a second support 4; a top plate 41; a side plate 42; bending section 420; roof outer panels 5; a lower layer of heat insulation cotton 6; a first support 7; a first end face 71; a second end face 72; an upper layer of heat insulation cotton 8; roof purlins 9; a main support 10; a first section 101; an intermediate section 102; a tail section 103; a projection 104; a non-protruding portion 105; middle layer heat insulation cotton 11; a first insulating layer 12; a second insulating layer 13.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For simplicity of the drawing, only the parts relevant to the invention are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In one embodiment, referring to fig. 1 and 3 of the specification, a metal roof with fireproof performance provided by the invention is illustrated, and the metal roof provided by the invention can effectively prevent roof purlins 9 from conducting high temperature and high heat to an upper roof system when encountering fire through a plurality of arranged fireproof heat insulation materials, and the fireproof heat insulation materials and the metal roof are in composite design, so that the cost of the fire wall is prevented from being linearly increased.

Referring to an attached drawing 1 of the specification, the metal roof with the fireproof performance provided by the invention comprises a roof purline 9, a roof inner plate 1, a waterproof piece 2, a first fireproof piece 3, a roof outer plate 5, a plurality of supporting pieces and heat insulation cotton, wherein the roof inner plate 1 is paved on the top of the roof purline 9, the waterproof piece 2 is paved between the roof outer plate 5 and the heat insulation cotton, and each supporting piece is arranged along the extending direction of the metal roof.

The waterproof member 2 in the above-mentioned content may be configured as a waterproof roll in some cases, and of course, may be other waterproof materials as long as the technical effect achieved by the present embodiment is not affected; it should also be noted that the support is used to connect the inner roof panel 1 and the outer roof panel 5, and the concrete connection mode may be that bolts or screws (such as the screws shown in the drawings) are used to connect the inner roof panel 1, the outer roof panel 5 and the corresponding components thereof, and the like; there are also many options for the insulation cotton, such as rock wool felt or aluminum silicate cotton, which can be replaced by those skilled in the art according to specific needs.

In addition, the heat insulation cotton is filled outside the support piece to form a heat insulation layer, and the outline of the support piece is used for forming a heat insulation cavity, so that the heat insulation layer wraps the heat insulation cavity, and the heat insulation cavity is used for blocking heat conduction; it will be appreciated that the contours of the insulating cavities that can be formed by the different shaped profiles, types of support members, are also different, as will be further described below.

Further, the first fire protection member 3 is located at the junction of the inner roofing panel 1 and each support member, and is limited between the support member and the inner roofing panel 1, so that the surface of the inner roofing panel 1 forms a continuous heat insulation structure for blocking a cold bridge or a hot bridge.

It can be appreciated that the first fireproof piece 3 is arranged at the joint between the roof inner plate 1 and the supporting piece in the above description, and the fireproof piece generally has better heat preservation and insulation performance and can effectively block heat transfer; meanwhile, the first fireproof part 3 has the effect of cold bridge prevention or heat bridge prevention, effectively improves and optimizes the performance of the fireproof weak points at the joint, blocks heat exchange in and out of a house, improves the integral heat preservation and insulation capacity of the roof, and avoids the phenomena of condensation and the like caused by the cold bridge effect and the heat bridge effect of the roof.

The first fireproof member 3 is generally made of an inorganic nonmetallic heat-insulating material, which can reduce environmental pollution, and can perform an effective heat-insulating function due to the characteristics of high temperature resistance and corrosion resistance.

Based on the above embodiment, the first fireproof member 3 may be a fireproof cushion block, and specifically may be an aluminum silicate plate or a glass magnesium plate, which may of course be adjusted according to the actual situation, for example, parameters such as specific materials and dimensions of the fireproof cushion block.

Alternatively, as shown, the inner roofing panel 1 has a wavy profile, firstly the first fire-protection element 3 can be fixed directly at each trough, so that slipping or shifting phenomena relative to the inner roofing panel 1 can be avoided.

And the roof inner plate 1 is partially connected with the heat insulation layer, so that a plurality of auxiliary heat insulation cavities can be formed through the wave crests and the wave troughs of the wavy outline, and the heat insulation effect is enhanced.

In one embodiment, as shown in FIG. 2, several supports each have a combined use and a stand-alone use therebetween.

Further, in the combined use state, the support members include at least the first support member 7 and the second support member 4.

It should be noted that, in the combined use state and the independent use state, the combined use state is first conceivable that at least one first supporting member 7 and at least one second supporting member 4 are combined to support the roof inner panel 1 and the indoor and outdoor panels, and the number and the mutual connection mode of the two are not restricted in the present embodiment; in addition, the roof is in an independent use state, the thickness of the heat insulation layer between the roof inner plate 1 and the roof outer plate 5 can be set differently according to different conditions, and only one supporting piece is arranged under the condition of smaller thickness, so that the cost is controlled, and the whole structure of the metal roof can be prevented from becoming heavy.

The combined use state described above will be further described below. In one embodiment, the first supporting member 7 and the second supporting member 4 are used in combination, the extending direction of the first supporting member 7 is perpendicular to the extending direction of the second supporting member 4, and the first supporting member 7 and the second supporting member 4 are stacked and fixedly connected in the height direction.

Further, the roof outer panel 5 is connected to the first support 7, and the roof inner panel 1 is connected to the second support 4.

It is worth mentioning that the first support piece 7 and the second support piece 4 extend to two directions respectively, so that the roof structure can be supported in different directions, and meanwhile, a multi-directional heat insulation cavity can be formed when corresponding heat insulation cavities are generated, and the heat insulation performance is more excellent.

In one embodiment, on the basis of the above embodiment, the first supporting element 7 is bent in a zigzag manner to form a first end face 71 and a second end face 72, the first end face 71 is connected with the outer roof panel 5, a part of the insulation layer is sandwiched between the first end face 71 and the outer roof panel 5, the second end face 72 is connected with the second supporting element 4, and the first supporting element 7 with the zigzag bending is hereinafter referred to as a zigzag purlin.

According to the foregoing, referring to fig. 2 and fig. 5 of the specification, two end faces of the Z-shaped purlin may be regarded as two transverse sides of the Z-shaped purlin, i.e. the upper transverse side is the first end face 71, and the lower transverse side is the second end face 72, and of course, in some embodiments, the bending of the Z-shaped purlin may be deformed, for example, the C-shaped purlin or the i-shaped purlin may be selected and used, which will not be described herein again.

Moreover, the insulation layer confined between the first end face 71 and the roof outer panel 5 acts similarly to the first fire protection member 3 described above, and can enhance the heat insulation and preservation effects, and prevent cold or heat from being transferred to the roof inner panel 1 (being transferred into the heat insulation cavity) through the Z-type small purlin, thereby affecting the overall performance of the metal roof.

In addition, as can be understood through the attached drawings, the heat insulation cavity corresponding to the Z-shaped purline forms a double-side cavity along the Z-shaped outline, and the cavity can be expanded through the auxiliary supporting piece in specific implementation, and the heat insulation layers on the two sides are isolated and limited, so that the heat insulation effect is improved.

In one embodiment, the insulation layers are distinguished by the second end face 72 as a first insulation layer 12 and a second insulation layer 13, the first insulation layer 12 being positioned at a higher level than the second insulation layer 13, the first insulation layer 12 having a cross-sectional width greater than or equal to the cross-sectional width of the second insulation layer 13.

It can be appreciated that in this embodiment, the insulation layers are distinguished by the connection positions of the Z-shaped purlines and the second supporting members 4, so that the first insulation layer 12 and the second insulation layer 13 are formed, and the insulation layers can be more targeted for the arrangement of the corresponding supporting members.

It should be further noted that the cross-sectional widths of the first insulating layer 12 and the second insulating layer 13 are described above, and it should be understood that, in this embodiment, the thicknesses of the first insulating layer 12 and the second insulating layer 13 are generally both thicker, which is only one implementation, and not meant to be the contrary or different in other embodiments.

In this embodiment, the first heat insulating layer 12 is made of glass wool, and the second heat insulating layer 13 is made of rock wool or aluminum silicate wool, so that the metal roof needs to solve the problem of fire resistance of the roof, and materials with better fire resistance, namely the rock wool or aluminum silicate wool, need to be arranged at the position close to the inner plate 1 of the roof, so that indoor fire can be isolated from being transmitted outwards, and outdoor fire can be isolated from being transmitted inwards.

Meanwhile, the rock wool and the aluminum silicate wool can be used independently or independently, so long as the fireproof requirement can be met, and a designer can adjust the proportion according to the cost factor.

In one embodiment, the second supports 4 each comprise a top plate 41 and two side plates 42.

Specifically, as shown in fig. 6, the two side plates 42 are respectively connected to two ends of the top plate 41 in an inclined manner, and the two side plates 42 are each provided with a bending section 420, and the bending direction of the bending section 420 is far away from the top plate 41, so that the overall profile of the second support member 4 is in a pi shape, and can be seen as a "n" shape, and a corresponding heat insulation cavity is formed through the surrounding areas of the top plate 41 and the two side plates 42.

Further, the Z-purlin is connected to the roof panel 41 and the roof inner panel 1 is connected to the corresponding bent section 420, while in combination with the above embodiments, in more detail, the second end face 72 of the Z-purlin is connected to the roof panel 41, thereby forming a combination of the Z-purlin and the second support member 4.

Wherein, the bending section 420 of the second supporting member 4 may be pre-opened with an assembly hole to match with structures such as a connection screw or a bolt, so as to further realize the fixed connection between the second supporting member 4, the first fireproof member 3 and the roof inner plate 1.

In another embodiment, the support member used in the independent use state in the above embodiment is used as the main support member 10.

As shown in fig. 3, the main support 10 has a first section 101, a middle section 102 and a tail section 103 connected in sequence, wherein the first section 101 and the middle section 102, and the middle section 102 and the tail section 103 are in turning transition.

Wherein, the first section 101 is correspondingly connected to the outer roof plate 5, the tail section 103 is correspondingly connected to the inner roof plate 1, and the inner roof plate 1 and the outer roof plate 5 are connected through the main supporting member 10, and the middle section 102 can be vertically arranged or obliquely arranged; when it is in a vertical arrangement, the main support 10 will be in the form of a Z-shaped purlin as described above, while the intermediate section 102 is in an inclined arrangement, the main support 10 more closely resembles the contour of a slide.

On the basis of the above embodiment, the heat insulating layer includes the upper heat insulating cotton 8, the middle heat insulating cotton 11 and the lower heat insulating cotton 6, and the upper heat insulating cotton 8, the middle heat insulating cotton 11 and the lower heat insulating cotton 6 are sequentially arranged along the height direction of the main support 10.

It will be appreciated that the materials of the upper layer of heat insulation cotton 8, the middle layer of heat insulation cotton 11 and the lower layer of heat insulation cotton 6 in the above description may be the same or different, and of course, the thickness of each layer of heat insulation cotton may also be adjusted according to the height, specific requirements, budget and the like of the main support 10.

In addition, similar to the arrangement condition in the embodiment, rock wool or aluminum silicate wool is generally adopted as the lower heat insulation wool 6, and the fire resistance of the rock wool and the aluminum silicate wool is better, so that the insulation of high heat and high temperature is fully realized, and the reliability of a metal roof is improved; the middle layer heat insulation cotton 11 and the upper layer heat insulation cotton 8 can be made of glass cotton, or can be made of heat insulation cotton made of rock cotton or other materials, and the materials of the heat insulation cotton are required to be adjusted according to actual conditions when the actual design and processing are performed only based on the economical consideration.

Further, the upper layer of heat insulating cotton 8 is arranged relative to the first section 101, the middle layer of heat insulating cotton 11 is arranged relative to the middle section 102, and the lower layer of heat insulating cotton 6 is arranged relative to the tail section 103.

Specifically, referring to fig. 3 of the specification, the first section 101 forms a surrounding structure through the upper layer heat insulation cotton 8 and the middle layer heat insulation cotton 11, the middle section 102 is penetrated through the middle layer heat insulation cotton 11, the tail section 103 forms a surrounding structure through the middle layer heat insulation cotton 11, the lower layer heat insulation cotton 6 and the first fireproof piece 3, and the heat insulation cotton is arranged in a targeted manner corresponding to each part of the main support piece 10 through the embodiment, so that the whole wrapping property of the heat insulation cotton on the main support piece 10 is stronger, and meanwhile, the heat insulation cotton with different materials is separated through the main support piece 10, thereby being beneficial to the construction of operators.

In one embodiment, as shown in FIG. 4, the main support 10 described above has a projection 104 and a non-projection 105.

The protrusion 104 protrudes in the direction of the roofing inner panel 1 to form a continuous groove on the main support 10, which extends from the root of the non-protrusion 105, so that a recess is formed between the non-protrusion 105 and the outer wall of the groove, which recess serves to provide a stuffing space for the heat insulation cotton.

It should be noted that, referring to fig. 4 of the specification, a corresponding heat insulation cavity is formed by the groove on each main support member 10, meanwhile, the whole length of the heat insulation cavity can be adjusted by adjusting the extension condition of each part on the main support member 10, and the depth of the heat insulation cavity can be adjusted by adjusting the protrusion distance of the protrusion 104.

In addition, when the length of the first section 101 is long enough, as in the drawing, the main support 10 on the right side can be abutted against the main support 10 on the left side, and because the main support 10 is provided with the protruding parts 104, the butt joint can be more conveniently realized, as long as the two protruding parts 104 can be overlapped to form the clamping connection, the subsequent operators can reinforce the main support through parts such as screws, bolts and the like, and if the surfaces of the main support 10 are only simple flat plates, the problem of stability is easy to generate when the two main supports 10 are connected, the dislocation is easy to generate when the main support 10 is abutted or clamped, and the two flat plates are not easy to fix, and a connecting plate is possibly needed to be staggered or additionally arranged between the two flat plates for fixing.

It should be noted that, in general, the connection between the main support 10 and the outer roof panel 5 is made by the non-protruding portion 105, and the connection between the main support 10 and the inner roof panel 1 and the first fire-proof member 3 (fire-proof cushion) is made by the protruding portion 104, so that corresponding assembly holes are formed in the non-protruding portion 105 and the protruding portion 104 to adapt to the connection between the fixing members such as bolts or screws.

It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. A metal roofing having fire protection properties, comprising:

a roof inner plate and a roof outer plate, wherein the roof inner plate is supported on the roof purline;

The support pieces are arranged along the laying direction of the roof purlines and are used for connecting the roof inner plate and the roof outer plate;

The heat insulation cotton is filled outside the supporting piece to form a heat insulation layer, a heat insulation cavity is formed by the outline of the supporting piece, the heat insulation layer wraps the heat insulation cavity, and the heat insulation cavity is used for blocking heat conduction;

The first fireproof piece is positioned at the joint of the inner roof plate and each supporting piece and is limited between the supporting pieces and the inner roof plate so as to form a heat insulation structure of the metal roof together with the heat insulation cavity, and the heat insulation structure is used for blocking a cold bridge or a hot bridge.

2. A metal roof with fire protection according to claim 1, wherein,

The supporting pieces are in a combined use state and an independent use state;

in the combined use state, the support member includes a first support member and a second support member.

3. A metal roof with fire protection according to claim 2, wherein,

In the state of use of the combination,

The extending direction of the first supporting piece is perpendicular to the extending direction of the second supporting piece, and the first supporting piece and the second supporting piece are arranged in a stacked mode along the height direction and fixedly connected;

The roof outer plate is connected with the first supporting piece, and the roof inner plate is connected with the second supporting piece.

4. A metal roof with fire protection according to claim 3, wherein,

The first supporting piece is bent in a Z shape to form a first end face and a second end face which are corresponding to each other, the first end face is connected with the roof outer plate, part of the heat insulation layer is clamped between the first end face and the roof outer plate, and the second end face is connected with the second supporting piece;

The heat insulation cavities corresponding to the first supporting pieces form double-sided cavities along a Z-shaped outline.

5.A metal roof with fire protection according to claim 4, wherein,

The heat insulation layer is distinguished into a first heat insulation layer and a second heat insulation layer through the second end face, the horizontal position of the first heat insulation layer is higher than that of the second heat insulation layer, and the cross section width of the first heat insulation layer is larger than or equal to that of the second heat insulation layer.

6. A metal roof with fire protection according to any one of claims 3 to 5, wherein,

The second supporting pieces comprise a top plate and two side plates;

The two side plates are respectively connected to the two ends of the top plate in an inclined mode, the two side plates are provided with bending sections, the bending directions of the bending sections are far away from the top plate, the overall outline of the second supporting piece is in a pi shape, and the corresponding heat insulation cavity is formed through the surrounding areas of the top plate and the two side plates;

The first supporting piece is connected with the top plate, and the roof inner plate is connected with the corresponding bending section.

7. A metal roof with fire protection according to claim 2, wherein,

In the stand-alone state, the support member to be used serves as a main support member;

The main support piece is provided with a first section, a middle section and a tail section which are connected in sequence, wherein the first section, the middle section and the tail section are in turning transition;

the first section is correspondingly connected with the outer roof plate, and the tail section is correspondingly connected with the inner roof plate.

8. A metal roof with fire protection according to claim 7, wherein,

The heat insulation layer comprises upper heat insulation cotton, middle heat insulation cotton and lower heat insulation cotton, and the upper heat insulation cotton, the middle heat insulation cotton and the lower heat insulation cotton are sequentially distributed along the height direction of the main support piece;

The first section is surrounded by the upper layer heat insulation cotton and the middle layer heat insulation cotton, the middle section is arranged on the middle layer heat insulation cotton in a penetrating mode, and the tail section is surrounded by the middle layer heat insulation cotton, the lower layer heat insulation cotton and the first fireproof piece.

9. A metal roof with fire protection according to claim 7, wherein,

The main support has a convex portion and a non-convex portion;

The protruding part protrudes towards the direction of the roof inner plate so as to form a continuous groove on the main support piece, the groove extends from the root part of the non-protruding part, a dent is formed between the non-protruding part and the outer wall of the groove, and the dent is used for providing a stuffing space for the heat insulation cotton.

10. The metal roofing with fire protection according to any one of claims 1-5, 7-9, characterized in that,

A waterproof piece is arranged between the heat insulation layer and the roof outer plate;

The roof inner plate is a continuous wavy outline, and the wavy outline is at least partially connected with the heat insulation layer, so that a plurality of auxiliary heat insulation cavities are formed between the roof inner plate and the heat insulation layer.