PL181826B1 - Method of and apparatus for levelling hatches,in particular sewer hatches - Google Patents

Abstract

Manhole leveling device, especially ducts intended to allow access to underground water supply devices, drains and openings sewers, telecommunication manholes and others equipped with a cover or a closing grate, characterized by having a base (1) ring-shaped on the base (1) placed adjacent brackets (3) on which it rests is the shoulder-shaped head (4) shaped plate, and in the slots (7) of the arms the head (4) hangs (5) fitted with hook ends (6) at the bottom.

Description

The subject of the invention is a device for leveling manholes, especially channel manholes, intended to allow access to underground water supply and sewage devices as well as drains, telecommunication and other manholes, equipped with a cover or a closing grate. Until now, for the leveling of manholes located mainly in the road lane or in communication routes, special adjustment rings inserted under the manhole cover (e.g. according to the Polish standard PN-87 / H-74051/02) allowing to raise the manhole cover itself are used. The use of such rings allows only the placement of the manhole cover at a height greater than previously, in increments of the thickness of the adjusting ring, but it is not possible to align the surface of the cover in relation to the surface level, especially in the case of the manhole axis being skewed in relation to the surface. The adjustment rings used most often break as a result of vibrations and pressures caused mainly by the movement of heavy vehicles, which causes the covers to collapse again.

There are also wedges placed under the hatch to obtain the correct position of the hatch in relation to the surface. During operation, the wedges are most often deformed or destroyed, which causes the manholes to collapse again.

The device for leveling hatches according to the invention has a ring-shaped base and on this base there are adjoining bars, on which the arms rest the head shaped like a shaped plate. In the slots of the arms of the head, there are hooks with hook ends at the bottom. The device also has a measuring unit mounted on the head and defining the position of the head relative to a reference element positioned on the surface.

The measuring unit mounted on the head can be connected to the system controlling the operation of the actuators, while the signal from the measuring unit controls the operation of the actuators. The device for leveling manholes, especially channel hatches, enables easy, quick and precise alignment of the upper surface of the manhole body with the ground surface, especially in communication routes.

The subject of the invention is illustrated in exemplary embodiments in the accompanying drawing, in which fig. 1 shows the device for leveling hatches in a side view with a partial section, fig. 2 is a top view of the device, and fig. 3 shows a side view of the device in another embodiment.

181 826

The device for leveling the hatches consists of a ring-shaped base 1 on which actuators 3 are placed, on the opposite ends of which the head 4 of a three-armed plate rests with its arms. The catches 5 suspended in the slots 7 of the head 4 have hook ends 6 introduced under the lower edge of the body 2 of the manhole. On the head 4 there is an optical measuring unit 8, which together with screens 9 serves to control the position of the head 4, together with the catches 5 and the manhole body 2. The measuring unit 8 is connected to the power supply and control system 10 for the operation of the actuators 3, and the signal from the measuring unit 8 controls the operation of the actuators 3.

In another embodiment, the manhole leveling device has a ring-shaped base 1 on which actuators 3 are mounted, the opposite ends of which are connected to a head 4 of a ring-shaped plate, on which the catches 5 are suspended from the bottom side. hangers 12 of the head 4 and are provided at the bottom with ends 6 hooked to the body 2 of the manhole. Above the base 1 there is a base strip 13 supported on the surface 11. The base strip 13 is a reference base for the measuring unit 8 in the form of a differential sensor measuring the current position of the manhole body 2 with respect to the base strip 13 located parallel to the surface 11. The measuring unit 8 is coupled to the system power supply and control 10 so that the signal from the measuring unit 8 controls the operation of the actuators 3 causing the desired positioning of the body 2 with respect to the surface 11.

181 826 □ ŻJ -------

Publishing Department of the UP RP. Circulation of 60 copies

Price PLN 2.00.

Claims (3)

Patent claims 1.A device for leveling manholes, especially channel manholes, intended to provide access to underground water supply, sewage and drainage devices, telecommunication wells and other wells equipped with a cover or closing grate, characterized by the fact that it has a ring-shaped base (1) and on the base (1) there are actuators (3) on which the arms of the head (4) in the shape of a shaped plate rest, and in the slots (7) of the arms of the head (4) there are hooks (5) provided with hook ends (6) at the bottom . 2. The device according to claim A device according to claim 1, characterized in that it has a measuring device (8) mounted on the head (4) and defining the position of the head (4) relative to a reference element (9) positioned on the surface (11). 3. The device according to claim 1 or 2, characterized in that the measuring unit (8) mounted on the head (4) is connected to the power supply and control system (10) of the actuators (3), while the signal from the measuring unit (8) controls the actuators (3) operation .