Die Erfindung betrifft eine Höhenverstellvorrichtung (1) für eine Entwässerungsrinne (100), insbesondere zur Entwässerung von Fassaden oder Terrassen, eine Entwässerungsrinne (100) mit einer solchen Höhenverstellvorrichtung (1) und ein Verfahren zur Höheneinstellung einer Entwässerungsrinne. Außerdem betrifft die Erfindung eine Rostverriegelungsvorrichtung (3). Die Höhenverstellvorrichtung (1) umfasst einen Stützkörper (10), insbesondere aus Kunststoff, und mindestens eine Verstelleinheit (80), wobei die Verstelleinheit (80) umfasst: ein sich entlang einer Verstellrichtung (V) erstreckendes erstes Verstellelement (21), das im Stützkörper (10) axial verschieblich gelagert ist und mindestens eine Auflagefläche (210) für einen Rinnenkörper (2) der Entwässerungsrinne (100) aufweist; ein relativ zum Stützkörper (10) in der Verstellrichtung (V) festgelegtes zweites Verstellelement (22); ein Koppelelement (23), das zwischen einer Entkopplungsstellung, in der das erste Verstellelement (21) und das zweite Verstellelement (22) nicht miteinander gekoppelt sind, und einer Kopplungsstellung, in der das erste Verstellelement (21) und das zweite Verstellelement (22) miteinander gekoppelt sind, hin und her beweglich ist, wobei in der Koppelstellung das erste Verstellelement (21) und das zweite Verstellelement (22) über das Kopplungselement (23) als Getriebe (20), insbesondere als Schraubgetriebe, zusammenwirken, insbesondere zur axialen Feinverstellung des ersten Verstellelements (21).

FIELD: water supply; sewerage.SUBSTANCE: group of inventions relates to the field of drain devices. Device (1) for height adjustment for drainage tray comprises support housing (10) made of plastic and at least one adjustment unit (80). Adjustment unit (80) comprises first adjusting element (21) extending along adjustment direction (V), fixed relative to support housing (10) in adjustment direction (V), second adjusting element (22), connecting element (23), which is reciprocatingly movable between the disconnected position, in which the first adjustment element (21) and the second adjustment element (22) are not connected to each other, and connected by a position, in which the first adjustment element (21) and the second adjustment element (22) are connected to each other. In the connected position, the first adjustment element (21) and the second adjustment element (22) interact via connection element (23) as transmission (20), primarily as a helical gear, first of all, for axial fine adjustment of first adjusting element (21). Water discharge tray comprises a tray housing, which forms at least one receiving dome open to the lower side of the tray housing, and the height adjustment device (1) described above. Adjustment unit (80) of height adjustment device (1) is arranged in receiving canopy. Case of the tray is configured to support at least one surface of adjoining the first adjustment element (21). Method for installation of height of drainage tray comprises steps, on which housing of tray is laid on above described device (1) of adjustment on height, while, when connecting element (23) is in disconnected position, in which first adjustment element (21) and second adjustment element (22) are not connected to each other, perform coarse adjustment along height of tray housing. Then, by means of scrolling of the first adjustment element (21) or the second adjustment element (22), connecting element (23) is moved from the disconnected position to the connected position, in which the first adjustment element (21) and second adjusting element (22) interact via connection element (23) as transmission (20), primarily screw transmission. When connecting element (23) is in a connected position, by actuation of adjustment unit (80), first of all, by means of rotation of the first adjustment element (21) or the second adjustment element (22), fine adjustment is made as to the height of the tray housing. Grating locking device comprises a housing for laying in at least one grid cell, installed in housing with possibility of rotation about transverse axis drive rocker, which on one side has pressure section, and on other side - exhaust section, installed in housing with possibility of rotation about vertical axis locking rocker, which has locking section and protraction section, which during rotation of the drive rocker interact with the locking area or the actuating rocker in such a way that locking section of lock rocker for locking the grid in tray body is turned inside through lateral recess for engagement with locking recess of tray housing or for protrusion of grid is turned from lock recess outside.EFFECT: providing simple and fast installation of drainage tray with improved accuracy of height adjustment.31 cl, 14 dwg