Device for fastening glass in greenhouses


E04D3/08 - with metal glazing bars

 

(57) Abstract:

The invention relates to agriculture, in particular to a device for fastening glass in greenhouses. Technical challenge is the reliable fixation of the glasses when they are of different thickness. The device includes profile, connected to a plate with a bent piece, the ends of shelves which are associated with the surfaces of the glass. Strap is made from a material with elastic properties, and its bending angle equal 130-170o. Profile can be made in the form of the retainer plate, and the width and length of the last made in the ratio of 1:12-30, with its length equal to the width of the glass. The device allows you to quickly and simply replace the glass in the repair of greenhouses and improve its operational reliability. 1 C.p. f-crystals, 2 Il.

The invention relates to agriculture, in particular to devices for fastening glass in greenhouses.

A device for fastening glass in greenhouses containing profile bracket, coupler connected with the clamping element in the form of strips of curved profile, the ends of shelves which are conjugate with the surface of the glass (see patent UK N 572247, IPC E 04 D 3/08, 1945).

The disadvantage know who and or rubber seals. Waterproof mastic during solidification rigidly connects the glass to the crate, which leads to cracks in the glass when snow or wind loads. Rubber seals are short-lived, complex, and inefficient.

It is also known a device for fastening glass in greenhouses containing bearing profile, connected to a plate with a bent piece, the shelves of which form with each other an obtuse angle, and their ends and bearing profile associated with the respective surfaces of glass, these shelves elastically pulled through the screed relative to the surface of the glass, and the profile can be made in the form of a clamping plate (see patent of Russian Federation N 2065687, IPC A 01 G 9/14, publ. 27.08.96 year).

With sufficient simplicity and reliable operation of the known device in its manufacture it is necessary to consider other options, such as width and length of the retainer plate, ensure good fixing glass roof with its different dimensions. In addition, the location of the shelves of the retainer plate at the angle specified is not effective when the thickness of the glass, as well as the power load due to climatic conditions, heavy snowfall, g is of glass in a greenhouse with such parameters of the retainer plate, which could ensure a reliable fixation of the glass roof in various sizes, thickness of glass and their attachment points.

The technical result from this task can be the following: improving the reliability of fastening of glass under various linear sizes and higher life.

This technical result is achieved in that the device for fastening glass in greenhouses containing bearing profile, connected to a plate with a bent piece, the shelves of which form an obtuse angle, and their ends and bearing profile associated with the respective surfaces of glass, these shelves elastically pulled through the screed relative to the surface of the glass according to the invention the angle between the shelves of the retainer plate is 130-170oand the width and length of the retainer plate is made in the ratio of 1: 12-30. This profile can be made in the form of the retainer plate.

From the known to the applicant information sources should not be running the specified angle between the shelves of the retainer plate, and the ratio of its width and length that is used for fixing the glass in the greenhouse, and therefore, the proposed device for ormula.

The applicant is not known devices of similar purpose, which would be revealed distinctive features of the claimed invention to obtain from using them in any combination of the specified technical result. Therefore, it is possible to draw a conclusion on the compliance of the claimed invention, the condition of patentability "inventive step".

The proposed device can be used both in private farms (not difficult in production) and industrial production greenhouses. Therefore, it is industrially applicable.

The invention is illustrated by drawings.

In Fig. 1 shows the device is one - sided alternative mounting glass.

In Fig. 2 - the same, two-sided alternative mounting glass.

The device consists of a clamping plate 1 in the form of a curved profile, facing fold up out of the roof). The ends of shelves 2 retainer plate 1 are conjugate with the surface of the glass 3, stacked on a shelf bearing 4 profile 5. Profile 5 is connected with the clamp strap coupler 6, for example, in the form of a bolted connection (screw-nut). Profile 5 can be made on the form (Fig. 2), similar to the form of the retainer plate 1. The last mod is eating), having spring characteristics, and the angle of the bend is equal to 130-170o. The width of the retainer plate may be equal for this case, 40-60 mm, and its length is equal to the width of the glass and is in the range of 800-1200 mm, This embodiment allows a reliable and "soft" commit glasses.

When assembling the greenhouse glass 3 without any spacers are placed on the shelves plane bearing 4 profile 5 and the presser bar 1 by tightening nuts bolting carry out the fixation of the glass. The implementation of the retainer plate 1 with the specified parameters creates the effect of water shutoff and strengthening of glass used in the construction of greenhouses that does not require putty or other sealing elements known in practice. This method is based on the meniscus effect in linear contact of shelves 2 of the retainer plate with glass and provides reliable waterproofing and floating glass that protects it from cracking during any movement of the frame of the greenhouse, as well as strong wind and snow and especially thermal loads.

The experiments conducted for determining the maximum permissible angular and linear parameters of the elements of the device showed that the angle is to dramatically increase the strength of the screed. This leads to cracks glasses, especially when there are sharp differences of temperatures and a significant level of solar radiation. On the other hand, the boundary value 170ois determined by the requirements of sustainable water shut-off during operation of the greenhouse in a changing climate and weather conditions. The ratio of the width and length of the retainer plate were determined on the basis of the conditions mentioned above with regard to thermal dimensional changes as the glass itself, and the fastening elements depending on the attachment.

The proposed device allows you to quickly and simply replace the glass in the repair of greenhouses and improve its operational reliability.

1. Device for fastening glass in greenhouses containing bearing profile, connected to a plate with a bent piece, the shelves of which form with each other an obtuse angle, and their ends and bearing profile associated with the respective surfaces of glass, these shelves elastically pulled through the screed relative to the surface of glass, characterized in that the angle between the shelves is 130 - 170oC, and the width and length of the retainer plate is made in the ratio of 1:12-30.

2

 

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