CN105926861A - Double-layer roof board system adaptable to thermal expansion and cold contraction - Google Patents

Abstract

The invention provides a double-layer roof board system adaptable to thermal expansion and cold contraction. The double-layer roof board system comprises primary purlines, secondary purlines, roof boards and base boards. The roof boards are mounted on the secondary purlines, and the base boards are mounted on the primary purlines. The secondary purlines are positioned on the main purlines and are fixedly connected with the main purlines. The roof boards are connected with and fixed to each other through locking devices. Support frames for supporting and fixing the locking devices are arranged below the locking devices, and are mounted on the corresponding secondary purlines. The locking devices and the support frames are connected slidably to enable the roof boards to slide relative to the support frames. Gaps are formed between every two adjacent base boards. The double-layer roof board system has the advantages that temperature deformation and temperature stress are not caused in case of thermal expansion and cold contraction, and accordingly, the problems such as bulging, water leaking and shortened service life of the roof boards due to high temperature stress are avoided.

Description

It is suitable for the double-deck roof board system expanded with heat and contract with cold

Technical field

The present invention relates to double-deck roof board system, particularly relate to a kind of double-deck roof board system being suitable for and expanding with heat and contract with cold.

Background technology

Die mould metal Roof system uses in the heavy constructions such as airport, stadiums, conference and exhibition center, industrial premises, storage, railroad platform awning, railway station building roofing in a large number because of features such as its lightweight, high-strength, attractive in appearance, easy constructions.But because wind resistance takes off ability not, metal Roof is taken off the phenomenon frequency fallen by wind has generation, the phenomenon of metal Roof infiltration also frequency to have generation.

Metal current Roof system mainly has single-layer roof plate and double-deck two kinds of forms of roof boarding, and the fixed form of the top plate of single-layer roof plate or double-deck roof board system mainly has the forms such as bridging type, biting connecions, standing-seam.

For lap jointing type roof boarding, plate is its weak part place with the lap-joint of plate, and this joint form is plate lap-joint to be fixed with roofing keel or support by tapping screw, leans on rubber washer and weather proofing sealant to carry out sealing waterproof between screw and plate.All easily causing seepage at two-ply lap-joint and tapping screw hole for nailing, leak and can cause tapping screw and the corrosion of tapping screw hole location steel, the fastening effect of tapping screw can be had a greatly reduced quality and even be lost its connection function.

Biting connecions and standing-seam formula connect without penetrating roof boarding with screw, roof leakage and the appearance of infiltration phenomenon are stopped, but owing to support and tapping screw Hide All are under roof boarding, construction quality often cannot ensure, cause roof boarding regional area disappearance support or support bracket fastened self threading pin lazy weight, the scarce capacity that is engaged of roof boarding and support, it is relatively low that wind resistance takes off ability, and high wind area should not use.

The most existing metal Roof system is difficult to solve very well the problem of temperature deformation and temperature stress, cause because temperature stress is excessive roof boarding arch camber, leak, the problem such as shortening in service life also happens occasionally.

Summary of the invention

It is an object of the invention to provide a kind of double-deck roof board system being suitable for and expanding with heat and contract with cold, it is intended to be used for solving existing roof board system cause because temperature stress is excessive roof boarding arch camber, leak, the problem such as shortening in service life.

The present invention is achieved in that

The present invention provides a kind of double-deck roof board system being suitable for and expanding with heat and contract with cold, including main purlin, secondary purlin, roof boarding and base plate, described roof boarding is installed on described purlin, described base plate is installed on described main purlin, described time purlin is positioned on described main purlin and fixing connection between the two, it is characterized in that: connected fixing between described roof boarding by locking device, there is below described locking device the bracing frame supporting fixing described locking device, support frame as described above is installed on described purlin of correspondence, described locking device is slidably connected so that described roof boarding can slide by relative support frame as described above with support frame as described above, between adjacent two described base plates, there is gap.

Further, described locking device includes the gland that bearing keel and lid are encapsulated on described bearing keel, and described bearing keel cooperate with described gland and clamp corresponding roof boarding.

Further, be connected by hold-down bolt between described bearing keel and described gland fixing.

Further, described bearing keel top has link slot, and the head of each described hold-down bolt is arranged in described link slot and can slide in described link slot.

Further, described gland be provided above waterproof block, described hold-down bolt cover cap is in described waterproof block.

Further, the upper surface in described gland has been arranged side by side two clamp bar slots, and each described hold-down bolt is between two described draw-in grooves, and described waterproof block has two row's buckles, and each described buckle is arranged in wherein in draw-in groove described in respectively.

Further, the inner surface of described gland having the strip plate arranged straight down, described strip plate compresses the roof boarding of correspondence straight down.

Further, the edge of described gland has the rib extended the most obliquely, and described bearing keel are positioned at the vertical projection of described gland.

Further, between described bearing keel and described gland, it is folded with the some spring fasteners for clamping described roof boarding end.

Further, between described spring fastener and described gland, it is folded with rubber strip.

Further, support frame as described above upper end offers at least one latch, is provided with the card base corresponding with described latch bottom described bearing keel, and described card base is snapped in described latch and can slide in described latch.

Further, described latch is the most trapezoidal and the most tapered with described card base cross section vertically.

Further, described locking device is elongated setting along the length direction of described roof boarding, and support frame as described above has multiple, and is spaced setting successively along the length direction of described locking device.

Further, support frame as described above is fixed on corresponding described purlin by a bridgeware.

Further, described bridgeware is provided with through hole, and support frame as described above is fixed on described bridgeware by connecting bolt, and the head of described connecting bolt is snapped in described through hole and can slide in described through hole.

Further, described main purlin is positioned at the lower section of described base plate, and described purlin is fixedly connected with installed part, and described installed part welds through the perforate being opened on described base plate with described main purlin.

Further, described main purlin is positioned at the top of described base plate, welds between described main purlin with described purlin, and described base plate is locked on the lower surface of described main purlin by screw.

Further, the length of described main purlin extends perpendicularly to the length bearing of trend of described purlin.

The method have the advantages that

The present invention is suitable for the double-deck roof board system expanded with heat and contract with cold, can relative slide between roof boarding with bracing frame, the problem that will not produce temperature deformation and temperature stress running into and expand with heat and contract with cold when, thus avoid cause because temperature stress is excessive roof boarding arch camber, leak, the problem such as shortening in service life.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the schematic diagram of embodiment of the present invention roof boarding；

Fig. 2 is the profile in embodiment of the present invention roof board system the most secondary purlin direction；

Fig. 3 is the profile in parallel purlin direction of embodiment of the present invention roof board system；

Fig. 4 is the exploded view in embodiment of the present invention roof board system the most secondary purlin direction；

Fig. 5 is the profile in parallel purlin direction of embodiment of the present invention bilayer roof board system.

Digital code implication in accompanying drawing is as follows:

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

nullSuch as Fig. 5，The embodiment of the present invention provides a kind of double-deck roof board system being suitable for expanding with heat and contract with cold，Including main purlin 20、Secondary purlin 10、Roof boarding 1 and base plate 30，Each part is multiple in actual applications，Then it is sequentially connected with between each roof boarding 1 and is respectively mounted on the secondary purlin 10 being fixed on correspondence，Base plate 30 is fixedly installed on main purlin 20，And also fixing connection between purlin 10 and corresponding main purlin 20 each time，Main purlin 20 then with the main box beam Welding of peripheral hardware，When arranging，The span of purlin 10 is between 1500-1700mm each time，I.e. time purlin 10 a length of should within the scope of，Between each purlin 10, parallel interval is arranged successively，And adjacent secondary purlin 10 is spaced 750-950mm，The length of the most main purlin 20 is about 3750mm，Its parallel interval setting the most successively，Distance between adjacent is 1500-1700mm，With time both purlins 10, galvanizing rectangular steel pipe is for main purlin 20，Roof boarding 1 and base plate 30 are then thick polyester roller coat aluminum-zinc alloy coloured silk steel，Roof boarding 1 thickness is about 0.8mm，The thickness of base plate 30 is about 0.6mm，And the length of each roof boarding 1 is corresponding with the interval of adjacent purlin 10，For 750-950mm，The length of each base plate 30 is corresponding with the interval of adjacent two main purlins 20，It is about 1500-1700mm.

nullSuch as Fig. 1 and Fig. 2，Described roof boarding 1 connects fixing by locking device，Refinement roof boarding 1 and the attachment structure of locking device，Described roof boarding 1 includes horizontally disposed body 11 and lays respectively at two connecting portions 12 at two opposed ends of body 11，It is specially and is respectively provided with connecting portion 12 in every an end portion，Every a junction 12 is bent extension formation by the wherein one end of body 11，It is structure as a whole between two connecting portions 12 and body 11，When being sequentially connected with between the most each roof boarding 1，Adjacent two roof boardings 1 are attached fixing by two the most adjacent connecting portions 12，And it is provided with the locking device for connecting another parts at every a junction 12，The most every a junction 12 is all to there being locking device，Only a locking device need to be had between two adjacent roof boardings 1，Now a locking device is to there being two connecting portions 12，Both are formed to connect by this locking device and fix，And two roof boardings 1 being positioned at outside are respectively provided with a connecting portion 12 and are connected with other installing component，Now a locking device is only to there being a connecting portion 12，By locking device so that the roof boarding 1 being positioned at outside is formed to be connected with other installing component and fixes，And when connecting portion 12 connects with corresponding locking device，Connecting portion 12 stretches in this locking device away from the end sections of body 11，Locking device is vertically fixed the part that connecting portion 12 stretches into，Locking device self is also each attached on the secondary purlin 10 of correspondence simultaneously，And then roof boarding 1 is mounted on time purlin 10.In the present invention, each roof boarding 1 is connected with corresponding locking device by the connecting portion 12 of end, the roof boarding 1 respectively set gradually not only is made to be connected as an entirety, corresponding roof boarding 1 is mounted on the secondary purlin 10 of correspondence simultaneously, and owing to two ends of each roof boarding 1 all use locking device to be fixed, when wind-engaging impacts, stability is the highest, additionally the end sections of the connecting portion 12 of roof boarding 1 stretches in locking device, roof boarding 1 vertically it is fixed by locking device, to this along the orientation being perpendicular to each roof boarding 1, each roof boarding 1 is respectively provided with in part-structure stretches into locking device and compresses, roof boarding 1 be all difficult to when by Wind impact on vertical direction by its by locking device in deviate from, it is stronger that wind resistance takes off ability.

Such as Fig. 4, described locking device includes that bearing keel 2 and lid are encapsulated in the gland 3 on described bearing keel 2, and described bearing keel 2 cooperate with described gland 3 and clamp corresponding roof boarding 1.Described bearing keel 2 and described gland 3 are each along the elongated setting of length direction of roof boarding 1, each connecting portion 12 part stretches between bearing keel 2 and the gland 3 of correspondence, it is connected by spaced some hold-down bolts 4 fixing between bearing keel 2 with gland 3, thus clamps the connecting portion 12 of correspondence.The top of bearing keel 2 has two support platforms 21 arranged along its length, each support platform 21 supports a junction 12 of correspondence, on the inner surface of gland 3, corresponding described support platform 21 has two strip plates 31 arranged straight down, two strip plates 31 all extend along the length direction of gland 3, when using hold-down bolt 4 to lock gland 3 with bearing keel 2, support platform 21 and vertically clamp corresponding connecting portion 12 with strip plate 31.All it is arranged in pairs with strip plate 31 owing to supporting platform 21, corresponding can clamp two adjacent roof boardings 1 between the most each group of bearing keel 2 and gland 3, it is achieved the connection between adjacent two roof boardings 1 is with fixing.Said two supports the link slot 22 between platform 21 with an elongated setting, in the head of each hold-down bolt 4 is all arranged in link slot 22 and can slide in described link slot 22, its threaded shank is then stretched out by this link slot 22 and is upward through gland 3, and its nut is then locked with described screw rod above described gland 3.In the present embodiment, each hold-down bolt 4 is spaced setting successively along the length direction of link slot 22, specially can be spaced about 300mm and a piece hold-down bolt 4 is set, by the locking of nut with screw rod, gland 3 is locked with bearing keel 2, and then both vertically clamp the connecting portion 12 of roof boarding 1, and owing to being connected for bolt between gland 3 with bearing keel 2, connect safe and reliable.The bearing of trend of link slot 22 is identical with the bearing of trend of bearing keel 2, and the head of each hold-down bolt 4 can slide in link slot 22, this hold-down bolt 4 be only limit the free degree of roof boarding 1 vertical direction and plate width direction, and do not limit the free degree of roof boarding 1 plate length direction, so that roof boarding 1 system is adapted to performance of expanding with heat and contract with cold, roof boarding 1, when carrying out temperature change, does not produce temperature stress, can be further ensured that the reliability of roof boarding 1 properties.

Such as Fig. 2 and Fig. 4, when using gland 3 compressing support keel 2, the projection of gland 3 in the vertical direction is more than the vertical projection of bearing keel 2, i.e. gland 3 cap mount keel 2, and the edge of gland 3 also has the rib 32 extended the most obliquely, it can to a certain degree be prevented effectively from the extraneous rainwater position that compresses between bearing keel 2 and gland 3 and penetrate into the downside of roof boarding 1.And on the other hand, upper surface at gland 3 is provided with waterproof block 5, when hold-down bolt 4 is connected with gland 3, each hold-down bolt 4 is stretched out by the connecting hole offered on gland 3, the equal cover cap in top that each hold-down bolt 4 then can be stretched out gland 3 by waterproof block 5 is in it, such that it is able to the part avoiding hold-down bolt 4 to stretch out exposes, and then not only it is possible to prevent it by raindrop erosion, it is possible to prevent rainwater to be penetrated in bearing keel 2 by the connecting hole on gland 3 simultaneously, i.e. use waterproof block 5 can be greatly improved the water resistance of roof boarding 1 system, ensure the service life of locking device simultaneously.For being connected for dismounting between gland 3 with waterproof block 5, waterproof block 5 can be opened by gland 3, the specially upper surface at gland 3 is provided with two clamp bar slots 33 protruding its surface, two draw-in grooves 33 are arranged side by side, opening 932 is the most horizontally toward and direction mutually deviates from, each hold-down bolt 4 extension is respectively positioned between two clamp bar slots 33, and the most waterproof block 5 has two row's buckles 51, and each buckle 51 is arranged in corresponding draw-in groove 33 respectively.In the above-described embodiments, for clamping between waterproof block 5 and gland 3, not only dismounting the most very convenient, and can form preferable sealing property, extraneous rainwater is difficult to be penetrated in waterproof block 5 by clamping position between the two.

Such as Fig. 2 and Fig. 4, further, some spring fasteners 6 also it are folded with between bearing keel 2 and gland 3, each spring fastener 6 is spaced setting successively along the length direction of bearing keel 2 respectively, its installation position is similar with hold-down bolt 4, interval about 300mm, is provided with perforate on each spring fastener 6, and hold-down bolt 4 can be passed by the perforate of corresponding spring fastener 6.In the present embodiment, spring fastener 6 is the symmetrical bending structure with hold-down bolt 4 as axis, the bending mode of its every half is similar to the end of connecting portion 12, and it is between gland 3 and connecting portion 12, after gland 3 is locked with bearing keel 2, its part-structure fits on connecting portion 12, can improve roof boarding 1 connecting portion 12 compression effect between gland 3 and bearing keel 2 further by spring fastener 6, and the wind uplift resistance of roof boarding 1 system is more preferable.Further, rubber strip 7 also it is folded with between spring fastener 6 and gland 3, due between each spring fastener 6 and gland 3 to there being two compacted position, it it is two to this rubber strip 7, each rubber strip 7 is all arranged along the length direction of bearing keel 2, general spring fastener 6 is also made for metal material, metal material character between its from gland 3 is different, separated by rubber strip 7, can avoid producing between gland 3 and spring fastener 6 electrochemical corrosion, good waterproof effect can also be played simultaneously.

Such as Fig. 2 and Fig. 4, also having multiple bracing frame 8 structure below described locking device, its upper end supports hold-down support keel 2, and corresponding purlin 10 is fixed in lower end, and each bracing frame 8 is spaced setting successively along the length direction of bearing keel 2.nullContinue the structure of refinement bracing frame 8，It includes horizontally disposed seat board 83、The gripper shoe 82 being vertically arranged and the connector 81 being positioned at gripper shoe 82 upper end，Gripper shoe 82 is erected on seat board 83，By gripper shoe 82 connecting base plate 83 and connector 81，Connector 81 is then for supporting hold-down support keel 2，Connector 81、Gripper shoe 82 and seat board 83 three are formed in one，The mode using clamping between connector 81 and bearing keel 2 carries out installing fixes，Will the bottom card of bearing keel 2 be tightly fixed on connector 81，It is specially the platform that connector 81 protrudes for level，At least one latch 811 caved in is offered on platform，Latch 811 runs through whole platform along the length direction of bearing keel 2，Bottom at bearing keel 2 is provided with at least one card base 23 accordingly，Card base 23 and latch 811 one_to_one corresponding，When bearing keel 2 are installed with bracing frame 8，Each card base 23 stretches in this latch 811 along corresponding latch 811 end，In card base 23 is sticked in latch 811 and can slide in latch 811.Shape for latch 811 with card base 23, its cross section vertically is the most trapezoidal, and bottom right is supreme tapered, when card base 23 is sticked in corresponding latch 811 by this, card base 23 will not be easily by abjection in corresponding latch 811, stability is higher, simultaneously because latch 811 only limit the free degree of bearing keel 2 vertically and vertically its length direction, and do not limit the free degree of its length direction, to this in the case of expanding with heat and contract with cold occurs in roof boarding 1, bearing keel 2 can also produce slip along its length, it is difficult to produce temperature stress, also the reliability of roof boarding 1 properties can be further ensured that.And connector 81 level protrusion gripper shoe 82, the corner structure arranged downward is formed between this connector 81 and gripper shoe 82, roof boarding 1 part is supported to this turning, and the most tangent with the bottom surface of gripper shoe 82 and connector 81, roof boarding 1 part is around the one end winding of connector 81 horizontal direction simultaneously.

Such as Fig. 3 and Fig. 4, the connected mode between refinement bracing frame 8 and secondary purlin 10, bracing frame 8 is installed on the secondary purlin 10 of correspondence by bridgeware 9.For bridgeware 9, including connecting plate 91, connecting plate 91 has uncovered U-clamp groove 911 straight down, and secondary purlin 10 partially passes through and be arranged in U-clamp groove 911, carries out installing by horizontally disposed connector 92 between the two and fixes.In the present embodiment, U-clamp groove 911 is inverted, after secondary purlin 10 passes U-clamp groove 911, the inwall laminating of its outer surface and U-clamp groove 911, connecting plate 91 back-off is on secondary purlin 10, can be formed locking device and the supporting role of roof boarding 1 by secondary purlin 10, it is attached fixing by connector 92 between U-clamp groove 911 and secondary purlin 10 simultaneously, connector 92 is horizontally disposed with, the active force on vertical direction can be born, and will not be come off by connecting plate 91 easily, the stability being connected between connecting plate 91 with secondary purlin 10 can be improved, and then also be able to ensure that the wind resistance of roof boarding 1 system takes off ability.Two kinds of embodiments can be had for connector 92, one of which connector 92 is some tapping screws, in the both sides of U-clamp groove 911, equal level shoots screw, the respective side of screw level connection joint connecting plate 91 and time purlin 10, typically all shoot two screws in every side of U-clamp groove 911, and spaced setting, the installation between connecting plate 91 and secondary purlin 10 is more convenient；And in a further mode of operation, connector 92 is at least one root length bolt, the secondary purlin 10 both sides with U-clamp groove 911 all offer connecting hole, by connecting plate 91 back-off on secondary purlin 10 after, the connecting hole that each root length screw bolt passes is located along the same line, then uses nut check to fix this stay bolt, usually, stay bolt is also two in such an embodiment, and both are also adopted by mode fixed connecting plate 91 and time purlin 10 at interval.

Such as Fig. 3 and Fig. 4, the structure of transformation part 9, the upper surface of connecting plate 91 is provided with least one set and connects seat 93, can connecting plate 91 is connected fixing with bracing frame 8 by connecting seat 93.Connect seat 93 one-body molded with connecting plate 91, bracing frame 8 by with is connected seat 93 and installs to fix and realize and the connection of secondary purlin 10, the connected mode between the attachment structure can being prevented effectively between bracing frame 8 and bridgeware 9 interference connecting plate 91 and secondary purlin 10.For connecting seat 93, horizontally disposed through hole 931 is offered on it, described through hole 931 is arranged along the plate width direction of roof boarding 1, this through hole 931 has opening 932 at the upper surface connecting seat 93, at least one connecting bolt 934 it is provided with in this through hole 931, the head of each connecting bolt 934 is arranged in the through hole 931 of correspondence, and its threaded shank then can be stretched out by corresponding opening 932, and uses nut check to fix with the bracing frame 8 being positioned above.nullWhen mounted，Connecting bolt 934 can be slided to installation site along its length by the end of corresponding through hole 931，More convenient，And in the present embodiment，The width dimensions connecting seat 93 upper shed 932 should be less than the width dimensions of through hole 931，I.e. when the head of connecting bolt 934 is arranged in through hole 931，Connecting bolt 934 will not be skidded off by its opening 932，And connect and be fixed with bolts between seat 93 and locking device，Structural stability is the highest，And use this form，Connecting bolt 934 only limit the free degree on bracing frame 8 vertical direction and width，When roof boarding 1 system is expanded with heat and contract with cold，Connecting bolt 934 can along the length direction of through hole 931 slidably，And then roof boarding 1 and bracing frame 8 can be driven slidably to stretch，Do not produce temperature stress，Ensure that the reliability of roof boarding 1 properties.Additionally in the two opposite side walls of each through hole 931, the most all offer conduit 933, two conduits 933 all arrange along the length direction of through hole 931 and are respectively positioned in same plane, when in the through hole 931 that connecting bolt 934 is arranged in correspondence, pad sheathed in threaded shank just part is arranged in two conduits 933, pad is difficult to be come off by corresponding connection seat 93, can strengthen the stability that connecting bolt 934 is threaded.In other embodiments between bracing frame 8 and bridgeware 9 be alternatively integrative-structure, the lower end of bracing frame 8 is formed in one with the upper surface of connecting plate 91, and both are an entirety, between without by connection seat 93 be attached fixing.

Such as Fig. 3 and Fig. 4, preferably, it is provided with two groups on connecting plate 91 and connects seat 93, two groups connect seat 93 parallel interval and arrange, and generally lay respectively at two relative edges of connecting plate 91 upper surface, direction for through hole 931, then should with secondary purlin 10 to install direction identical, and it is perpendicular to the length direction of locking device, two connecting bolts 934 all it are arranged with in each through hole 931, two connecting bolts 934 are all spaced setting successively along the length direction of through hole 931, to between this each bracing frame 8 with the most corresponding one purlin 10, there are four connecting portions 12, after each position all uses connecting bolt 934 fixing, bracing frame 8 can stably be installed on the secondary purlin 10 of correspondence under the effect of bridgeware 9.Optimize the attachment structure connected between seat 93 and bracing frame 8, the upper surface of every a connecting seat 93 is the plane being positioned at corresponding opening 932 both sides, the upper surface i.e. connecting seat 93 is horizontal plane, when using connecting bolt 934 fixed conversion part 9 and bracing frame 8, the upper surface laminating of the lower end of bracing frame 8 and every a connecting seat 93, there is bigger contact area between the two, connective stability between the two can be strengthened further.

Such as Fig. 5, further, refining time purlin 10 in above-mentioned roof board system, main purlin 20, annexation between roof boarding 1 and base plate 30, roof boarding 1 is mainly fixed on the secondary purlin 10 of correspondence by above-mentioned locking device；nullThe length of described base plate 30 is more conventional shortening，The length of each described base plate 30 controls at 12m ~ 18m，And it is respectively provided with gap between the most adjacent two described base plates 30，Make roof board system can better adapt to expand with heat and contract with cold，Two kinds of mounting means then can be used between base plate 30 and main purlin 20，One of which is，Base plate 30 is installed on the top of main purlin 20，It is locked by some tapping screws between base plate 30 and the upper surface of corresponding main purlin 20，Secondary purlin 10 is further fixed on installed part 40，This installed part 40 is the most u-shaped close with the structure of connecting plate 91，But its right-hand thread time purlin 10 lower part structure，It is also adopted by horizontally disposed tapping screw between the two or bolt connects fixing，Base plate 30 is just offering perforate to the position of installed part 40，The bottom of installed part 40 contacts with main purlin 20 after this perforate，Weld at both contact positions；And in a further mode of operation, base plate 30 is installed on the lower section of main purlin 20, some tapping screws are used to be locked between the lower surface of base plate 30 and main purlin 20, the most main purlin 20 and time purlin 10 are respectively positioned on base plate 30 and enclose in the confined space set with roof boarding 1, main purlin 20 does not expose, now main purlin 20 can be contacted with time purlin 10, directly weld at both contacts site.For the mode being crisscross arranged being used to be attached between main purlin 20 and secondary purlin 10, the length of the most main purlin 20 extends perpendicularly to the length bearing of trend of time purlin 10, and it can improve the intensity that roof board system is overall.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (18)

1. one kind is suitable for the double-deck roof board system expanded with heat and contract with cold, including main purlin, secondary purlin, roof boarding and base plate, described roof boarding is installed on described purlin, described base plate is installed on described main purlin, described time purlin is positioned on described main purlin and fixing connection between the two, it is characterized in that: connected fixing between described roof boarding by locking device, there is below described locking device the bracing frame supporting fixing described locking device, support frame as described above is installed on described purlin of correspondence, described locking device is slidably connected with support frame as described above so that described roof boarding can slide by relative support frame as described above；Between adjacent two described base plates, there is gap.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 1, it is characterized in that: described locking device includes the gland that bearing keel and lid are encapsulated on described bearing keel, described bearing keel cooperate with described gland and clamp corresponding roof boarding.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 2, it is characterised in that: it is connected fixing between described bearing keel and described gland by hold-down bolt.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 3, it is characterised in that: described bearing keel top has link slot, and the head of each described hold-down bolt is arranged in described link slot and can slide in described link slot.

Be suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 3, it is characterised in that: described gland be provided above waterproof block, described hold-down bolt cover cap is in described waterproof block.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 5, it is characterized in that: the upper surface in described gland has been arranged side by side two clamp bar slots, each described hold-down bolt is between two described draw-in grooves, described waterproof block has two row's buckles, and each described buckle is arranged in wherein in draw-in groove described in respectively.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 2, it is characterised in that: having the strip plate arranged straight down on the inner surface of described gland, described strip plate compresses the roof boarding of correspondence straight down.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 2, it is characterised in that: the edge of described gland has the rib extended the most obliquely, and described bearing keel are positioned at the vertical projection of described gland.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 2, it is characterised in that: between described bearing keel and described gland, it is folded with the some spring fasteners for clamping described roof boarding end.

It is suitable for the double-deck roof board system expanded with heat and contract with cold the most as claimed in claim 9, it is characterised in that: between described spring fastener and described gland, it is folded with rubber strip.

11. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 2, it is characterized in that: support frame as described above upper end offers at least one latch, being provided with the card base corresponding with described latch bottom described bearing keel, described card base is snapped in described latch and can slide in described latch.

12. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 11, it is characterised in that: described latch is the most trapezoidal and the most tapered with described card base cross section vertically.

13. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 1, it is characterized in that: described locking device is elongated setting along the length direction of described roof boarding, support frame as described above has multiple, and is spaced setting successively along the length direction of described locking device.

14. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 1, it is characterised in that: support frame as described above is fixed on corresponding described purlin by a bridgeware.

15. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 14, it is characterized in that: described bridgeware is provided with through hole, support frame as described above is fixed on described bridgeware by connecting bolt, and the head of described connecting bolt is snapped in described through hole and can slide in described through hole.

16. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 1, it is characterized in that: described main purlin is positioned at the lower section of described base plate, being fixedly connected with installed part on described purlin, described installed part is fixed through the perforate being opened on described base plate with described main purlin.

17. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 1, it is characterized in that: described main purlin is positioned at the top of described base plate, fixing between described main purlin and described purlin, described base plate is locked on the lower surface of described main purlin by screw.

18. are suitable for the double-deck roof board system expanded with heat and contract with cold as claimed in claim 1, it is characterised in that: the length of described main purlin extends perpendicularly to the length bearing of trend of described purlin.