SU1654141A1 - Arrangement for locking flap cover in open position - Google Patents

Abstract

The invention relates to designs of swivel covers and can be used to fix covers in the open position, preferably hatch covers and hubs of revolving or tilting containers when unloaded. The aim of the invention is to improve the reliability and convenience of operation, as well as simplify the design. The cover 1 is pivotally mounted on the rack 2 of the container 3 by means of two semi-axes 4 and 5 with threaded cuts of opposite directions. The half shafts 4 and 5 are screwed into the counter threaded holes of the rack 2 and have shoulders 6 and 7 and faceted heads mounted for axial movement in the opening 10 of the lid 1. When the lid 1 turns, the half axes 4 and 5 turn simultaneously through the faceted heads, screwing rack all the way flanks 6 and 7. 2 Il.

Description

The invention relates to designs of rotary covers and can be used to fix the covers in the open position, mainly manhole covers and necks of rotating or tipping containers when they are unloaded.

The aim of the invention is to increase the reliability and ease of use, as well as simplifying the design.

Figure 1 shows the device in the closed position, side view; figure 2 section aa in figure 1.

The cover 1 is pivotally mounted on the Rack 2, mounted on the tank 3, by means of two axles 4 and 5. On the axles 4 and 5 there are collars 6 and 7 and Oolzuns 8 and 9 are fixed, made in the form of faceted heads. A hole 10 is made in the lid 1, in which the sliders 8 and 9 are mounted with the possibility of movement along it. Shafts 4 and 5 are threaded with opposite slicing directions and screwed into the mating threaded holes of the Rack 2. In the closed position of the lid 1 Between the shoulders 6 and 7 and the inner surfaces of the rack 2 there are gaps S, the values of which are selected depending on the required opening angle of the lid 1.

The device operates as follows.

When opening the cover 1 together with it Turn over the faceted heads of the sliders 8 and 9 of the axle shaft 4 and 5, which are screwed. in the rack 2 until the collars 6 and 7 are in contact with the rack 2. The further rotation of the cover 1 occurs due to the tightening of the threaded pairs: half-axis-rack. The lid 1 is fixed for 5 due to friction moments arising in threaded pairs when they are tightened. To protect against self-closing of the lid, the tightening torque of the threaded connections when opening should be 1.5-2 times greater than 10 times the self-closing moment from the gravity of the lid. Closing the lid is done by overcoming the tightening torque of the threaded pairs when turning the lid in the opposite direction.

Claims (1)

Claim A device for fixing the rotary cover in the open position, containing two axles interacting with the 20 cover and capacity, and means for fixing the cover relative to the capacity, characterized in that, in order to increase reliability and ease of use, as well as simplify the design, means of fixing the cover are two sliders installed in the cover with the possibility of moving along the axis of its rotation, on which the semi-axes are fixed, made by threaded threads with the opposite 30 directions and screwed into the reciprocal the screw holes of the base, while the axle shafts are provided with shoulders abutting the base in the open position of the lid.