CN2348585Y

CN2348585Y - Prop free frame for greenhouse

Info

Publication number: CN2348585Y
Application number: CN98239630U
Authority: CN
Inventors: 张玉祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-09
Filing date: 1998-12-09
Publication date: 1999-11-17
Anticipated expiration: 2008-12-09

Abstract

The utility model relates to a greenhouse framework without upright post. The utility model is composed of a back wall, framework plates and vertical and horizontal connecting ribs, the framework plates are preformed by magnesite and bamboo ribs, each framework plate adopt a double-bow-beam triangular bracket structure, the framework plates are connected with each other by vertical and horizontal connecting ribs, the upper bow beam surfaces and the lower bow beam surfaces of the framework plates can all can be laid with plastic films, and temperature in a greenhouse can be raised 5 DEG C. The utility model has the advantages of high intensity, low cost no corrosion, no deformation and no inclination, each plate can bear more than 200 kg, and the service life of covering films can be enhanced one time by using the utility model. The height of the utility model can higher than the height of ordinary greenhouses, working space is enlarged, and the utility model is convenient for manual and machining operation in greenhouses.

Description

The Greenhouse without column framework

The utility model relates to the big plastic hot-shed with it that generally use in a kind of rural area, does not particularly have the booth frame structure of upright supports.

The big plastic hot-shed with it of rural area use at present adopts bamboo wood, metal, plastic skeleton usually.Disclosed " ZL96209848.5 " number, " greenhouse by solar heat frame structure " patent by name, its structure comprises body of wall, two side ends face wall and ceiling, it uses the shell theory of airplane design fuselage and wing cover, makes the greenhouse form integral frame-type shell structure, indoor no upright supports, though this framework greenhouse booth has more in the past increased working space and illuminating area, but still has following defective: 1, frame strength is not good enough; 2, owing to metal structure skeleton thermal conduction rate height, externally under the influence of temperature environment, the shop is carried out easier to be more chipping than other position at the plastic foil of frame position, thereby reduces the service life of carrying out film; 3, because this skeleton structure can only be carried out film by individual layer, heat insulation effect is undesirable in the canopy.

The purpose of this utility model is to overcome many defectives that above-mentioned booth framework exists, and designs a kind of rational in infrastructurely, and the skeleton material capability is good and intensity is high, can improve the Greenhouse without column framework of heat insulation effect in plastic film service life and the canopy greatly.

To achieve these goals, this framework adopts the lower magnesia of heat conduction speed (synthetic magnesia) for making the main material of framework, make skeleton with bamboo reinforcement and be prefabricated into single frame board with it, by frame board, in length and breadth dowel and the back wall form the booth main body frame, frame board is a bouble-bow beam A-frame structure, be up-bow beam and employing tripod support between the bow beam down, be provided with in length and breadth to dowel between the frame board, make frame board connect into general frame.

The bilayer shoe membrane structure that this frame board is effectively realized, promptly the up-bow beam of frame board and the equal film laying in following bow beam surface make to form a thin film sandwich between the bouble-bow beam, have improved the interior heat insulation effect of canopy.

The utility model is compared with above-mentioned booth framework disclosed and that generally use at present has following advantage:

1, the frame body that adopts magnesia and bamboo reinforcement precast framework plate to construct, its intensity height, cost only is 1/5 of a metal frame, not decayed, the indeformable inclination of burn into, wind loading rating is strong, and more than the every frame board load-bearing 200kg, this framework is because thermal conduction rate is low, plastic foil on the frame position is difficult for damaging in advance, and framework is carried out the service life of film can improve 1 times;

2, because frame board adopts bouble-bow beam tripod structure, can realize the double-deck film of carrying out of booth, form two film canopies chamber of a strap clamp floor, can make temperature of shed improve 4～5 ℃.

3, owing to this frame board intensity height, the height of constructing frame can be higher than general booth, so that enlarge working space, is convenient to artificial and mechanical work in the canopy.

Below by accompanying drawing embodiment of the present utility model being done one describes.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the frame board structural representation.

Referring to Fig. 1, this Greenhouse without column framework, mainly by the back wall 1, frame board 2, constitute to dowel 3 in length and breadth, frame board is formed with bamboo reinforcement is prefabricated by magnesia (synthetic magnesia), sectional is prefabricated, precasts buckling groove in the junction and carries out clamping, and also available connecting plate 4 is connected with spike dowel.

Referring to Fig. 2, frame board 2 is a bouble-bow beam A-frame structure, and the end of frame board has one section notch 5, and this notch 5 is fixed on back wall 1 along last, at up-bow beam 2 _aWith following bow beam 2 _bBut upright surface film laying, make a ceiling and a side canopy face realize that the bilayer have mezzanine space carries out membrane structure, the shoe film on following bow beam surface can be arranged to the activity formula of rising and falling, and can fall insulation at night, unlatching on daytime and unlikely being in the light.To be connected to dowel 3 in length and breadth, the infall of dowel is fixed with iron wire in length and breadth between the frame board 2, and the gable of framework booth is that brick is built or soil is built the sidewall wall.

Claims

1, Greenhouse without column framework, mainly by back wall [1], frame board [2], dowel [3] constitutes in length and breadth, it is characterized in that frame board is a bouble-bow beam A-frame structure, be connected with vertical horizontal bar between the frame board [2].

2,, it is characterized in that said frame board is by magnesia and bamboo reinforcement is prefabricated forms according to the described Greenhouse without column framework of claim 1.

3, according to claim 1 or 2 described Greenhouse without column frameworks, it is characterized in that the upper and lower bow beam [2 of frame board _a2 _bBut] upright surface film laying.