The device system curtaining greenhouses with adjustable stroke

 

(57) Abstract:

The invention relates to structures, systems control lighting in greenhouses. The device includes a rack and pinion gears connected with rods curtain, on which is fixed beams curtaining. In extreme migration parallel to the main rods are additional rods not connected with the pinion gear and extending at least two spans. These rods are mounted in the guides, with the possibility of translational motion. On a beam curtaining previous span greenhouses directly above additional rods are fixed leashes, and the extra rods on both sides of the leash fastened resistant clamps so that the distance between them provided free running of the leash when the motion of the beam curtaining the previous span. Free play is adjusted by moving the thrust collars for extra rods and the value it should provide a means of reducing stroke screening at span greenhouses. This improves the reliability of the device curtaining extreme span greenhouses and exclude the extra effort to operate. 3 Il.

The invention relates to constructions of what they and individual greenhouses.

In the system curtaining greenhouses must be provided in the end spans (end walls) reduced in comparison with the rest of the stairs, move the curtain of the screen. This is caused by the passage about the end walls of the greenhouse vertical pipe storm drain systems and heating, not allowing beams curtaining to go to the wall and stretch the curtain screen for the entire length of the extreme span greenhouses.

For these purposes, a device (1) system curtaining extreme spans greenhouses, representing the telescopic connecting rods curtaining at the passage with the main rod system curtaining. The curtain rod at span with a clearance included in the rod curtaining the penultimate passage, and a stop rod penultimate flight enters the groove in the rod curtaining extreme flight, and the length of the groove is set to freeplay, reducing stroke curtaining extreme flight. At the beginning of the movement of the main rod system curtain, curtain rod extreme flight remain motionless because free with a clearance connecting rod does not allow to overcome the force required to stretch of curtain screen extreme flight. When the movement of the main rod ETA with lag on the size of the groove. During the reverse movement when the folding screen, the process is reversed.

The disadvantage of this technical solution is fuzzy system operation, because the operation of the greenhouse changing conditions of the sliding rod in the gap due to pollution, the occurrence of distortions in the individual bars extreme flight, United by a common beam curtaining, etc. This leads to the fact that some bars extreme flight jam in the main rods and as a result begin the movement to deform the beam curtaining. This creates additional load on the actuator, there is provided a dense zastarevanje at migration, and sometimes collapses beam curtaining. Practice operation of the system showed her insecurity and periodic emergency situations. Additionally, this solution does not allow to change the course of curtaining extreme flight when changing situation in the greenhouse.

A device (2) system curtaining extreme spans representing the beam curtain, attached to it one end of a curtain that is installed on the rod system curtaining in the zone extreme flight using the roller carriages. The being the total force, necessary to stretch the curtain of the screen.

In this unit at the beginning of the movement of the rod system curtaining beam curtaining extreme flight starts to move and stretch the curtain screen. When reaching the stop limiting the stroke, or other obstacles in the extreme span, beam curtain stops due to the rolling of the rollers on the rod, overcoming rolling friction, allowing at the same time, further movement of rods and beams attached to them curtaining other openings, thereby providing a full zastarevanje all other spans of the greenhouse.

The disadvantage of this technical solution is the increase in the required power of the drive because when you approach the extreme beams to focus requires additional force to overcome the friction in the roller carriages, which by its size obviously must be greater than the force required to stretch the curtain of the screen at the stairs.

The results of the patent search by country: Russia, Holland, Denmark, Germany, France did not reveal such patented technical solutions.

The purpose of this invention is to provide a reliable device curtaining at five-goal is achieved by what in the inventive system curtaining parallel to the main rod system curtaining greenhouses in extreme flights are additional rods not associated with the actuator and extending at least two spans. Additional rods are mounted in the guides, with the possibility of translational motion. PA beam curtaining previous span greenhouses directly above additional rods are fixed leashes, and the extra rods on both sides of the leash fastened resistant clamps so that the distance between them provided free running of the leash when the motion of the beam curtaining the previous span. Free play is adjusted by moving the thrust collars for extra rods and the value it should provide a means of reducing stroke screening at span greenhouses.

The proposed solution is in contrast to the known helps to ensure reliable operation of the system, as rod curtain extreme flight moved to the roller guides spaced at a considerable distance, and their movement is leash included in hard contact with the thrust collar on the rod. Is not required to overcome the additional awarded a fragment of a curtain greenhouses in the plan. In Fig. 2 shows a section along the main rod system curtaining greenhouses. In Fig.3 shows a section through an additional rods system curtaining extreme span greenhouses.

System curtaining greenhouse contains a rack and pinion gear 1, which are connected to the main rod 2 system curtaining greenhouses, carry a beam curtaining 3 attached to one edge of the curtain of the screen 4. The main rod 2 system curtaining end in the penultimate flight of the greenhouse. Parallel to them in the end span greenhouses in the guide 5 install additional rod 6 is not associated with rack-and-pinion gears, grasping at the penultimate flight of the greenhouse. For extra rods mounted beam curtaining 7 extreme span greenhouses and has two thrust collar 8, between which is placed the leash 9, mounted on the beam curtaining 3 penultimate flight and included in the movement alternately into contact with the thrust clamps 8. The distance between the thrust collars 8 provides a free running leash 9, through which decreases the speed of the curtain at the stairs.

The principle of the device system curtaining with adjustable stroke next. PR is AMI curtaining 3, stretching thereby curtain screen in the span greenhouses. Leash 9, moving with the beam curtaining 3 penultimate flight, overcomes the gap "L" between the thrust collars. Additional rod 6 is fixed. After the leash in his movement will come into contact with the thrust collar 8, will start moving and the additional rod 6 attached to them beam curtaining 7 extreme flight and will begin a stretch of curtain screen extreme span greenhouses. Moreover, the process of screening the extreme flight will be less than the value of the free motion of the lead 9. When folding curtain screen process is repeated, with the leash 9 will depart from the first thrust collar 8 and overcome the gap "L"between the clamps 8 will come into contact with the second thrust collar. As a result, the folding curtain screen extreme flight will be made also with a reduced stroke and return to the same position from which it started stretching of the screen.

Sources of information

1. Diagram of the system of the firm AGRISYSTEMS INTERNATIONAL the Netherlands (Fig.4)

2. Diagram of the system of the firm VAN DER VALK SYSTEM the Netherlands (Fig.5)l

The device system curtaining greenhouses with adjustable stroke, containing not associated with the actuator depropaniser rod mounted in the guide parallel to the main rod system curtaining with the possibility of translational motion and stretch, at least two spans of the greenhouse, are installed on each of the additional rods of the two thrust collars, between which is located a leash, attached to a beam curtaining previous span greenhouses and in turn included into contact with its movement with thrust collars, the distance between which ensures free running leash, reducing stroke screening at span greenhouses.

 

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