SU973714A1 - Locking of device for inspection hatch - Google Patents

Description

one

The invention relates to the construction, in particular to water supply and sewage systems, more specifically to devices that restrict access of unauthorized persons to the chambers and wells, and can be used in sewer systems, sewage wells.

A known hatch for a manhole, provided with a handle and an eye, on which a locking bar is applied, which engages with a special socket on the inner cylindrical surface of the housing 1.

The disadvantage of this cover is that it does not provide unauthorized access to the wells of unauthorized persons on its own and requires the use of a lock that is forced to work in extremely difficult conditions — high humidity, pollution, and occasional freezing, which reduces reliability.

In addition, the well has several different users (the well number of all users is the same), each of which must have its own key for the well.

Closest to the invention is a locking device for the manhole of a manhole, including a mechanical valve 2.

ten

The disadvantage of such a device is the low reliability of locking.

The purpose of the invention is to increase the reliability of locking the hatch.

15

The goal is achieved by the fact that in the locking device for the manhole of the manhole, including a mechanical valve, the valve is made of a composite of two flaps,

20 connected anaquists are movable relative to each other, and in the place of overlap of the sash imeggg coaxial holes, made in ei.

the flaps are round, and in the lower one - with slots adjacent to the circle, with a bolt through each coaxial hole, a crossbar with a graduated limb on top, and a retainer at the bottom.

In this case, the limbs of the beams are located above the upper flap, and the latches under the lower flap.

FIG. 1 shows the device, a general view in section; figure 2 - section aa in figure 1.

In both figures, the device is depicted in the Closed position.

The locking device comprises flaps 1 and 2, which are overlapped movably relative to each other. On the wings 1 and 2 handles 3 are placed. At the overlap of the doors 1 and 2 there are a series of coaxial holes k and St, respectively, in which the bolt 6 is placed. The holes 5, made in the lower flap 1, have slots 7 in which the bolt 6 enters the movement of the valves 1 and 2 towards each other when opening.

At the lower end of the bolt 6 there is a latch 8, and at the upper end there is a limb 9, and between the lower plate and the latch there are antifriction washers 10.

There are risks on limbe 9, and a symbol of 12 is put against each, for example the number O, 1, 2, etc. the flap against each limb 9 is applied with an installation risk of 13.

The longitudinal axis of symmetry of the cross section of the bolt 6 coincides with one of the ribs 11 of the limb 9. The cover in the working position is placed in the recess H of the body of the hatch 15.

The device works as follows.

All bolt 6 is aligned with the axis of the corresponding slot 7, for which

With limbs 9, a certain combination of characters 12 is typed, for example, but the measure of the well on the tablet. The flaps 1 and 2 are shifted (the position is open) and the lid is inserted into the housing 15 opposite the recess I. The flaps 1 and 2 are moved. At the same time, the bolt 6 from slot 7 goes into the hole 5 (in the hole 4, bolt 6 is fixed) . Limbs 9 are placed in an arbitrary position (relative to installation risk 13). Cover position Closed.

Claims (2)

1. A locking device for the manhole of the manhole, including a mechanical valve, characterized in that, in order to increase the reliability of locking, the valve is made of a composite of two flaps connected overlap movably relative to each other, and in the place of overlap of the flap have coaxial apertures made in the upper the flaps are round, and in the lower one - with slots adjacent to the circle, with a bolt through which there is a graduated limb on top of each coaxial hole, and a retainer at the bottom. 2. The device according to claim 1, about tl and h ayu e with the fact that the limbs of the crossbars are located above the upper flap, and clips - under the bottom. Sources of information taken into account in the examination 1. USSR author's certificate No. 636327, cl. E 02B 29/12, 1976. 2. For France of France no., Cl. E 02 D 29/1, published. .