CZ307335B6 - A height-adjustable and tilting sewerage cover - Google Patents

Abstract

A height-adjustable and tilting sewerage cover for installation on a vertical sewerage shaft consists of a cover and a frame. The frame is formed by a foot portion (12) which is firmly attached to the upper edge of the shaft. Further, it is formed by an intermediate piece (11) and a head (10) of the tilting frame, wherein the intermediate piece (11) is rotatably mounted on the foot portion (12) and the head (10) is rotatably mounted on the intermediate piece (11). The contact surfaces between the intermediate piece (11) and the head (10) of the tilting frame have a bevel of 4°. In the inner recess (16) of the head (10), there is a split nut (2) with an internal saw-tooth thread (4) which engages with an external saw-tooth thread (3) formed on the shoulder of the cover (1).

Description

Technical field

The invention relates to a device which makes it possible to adjust the height and tilt laterally of a sewer cover on a shaft ring.

BACKGROUND OF THE INVENTION

The utilities are usually located under or in parallel with local roads. As a result, the entrance hatches, street gullies and shaft covers open onto the surface of pavements, sidewalks or other paved surfaces. Such a solution of the sewerage network entails a number of disadvantages and problems. All these elements must be fitted as accurately as possible to the plane of the road surface in order to avoid dynamic shocks during road traffic. The requirement for precise placement and focus places increased demands on qualification and the associated financial burden. Failure to observe the principle of accurate installation to the road or if the entrance hatch is sunken, ie it is below road level, during road traffic, dynamic shocks occur that damage the surroundings of the entry and inspection shafts, cause further drop below road level and adversely affect road safety traffic. In the case of changes in the leveling of the entrance lids and repairs of the road surface, the frames of the entrance hatches of the water management facilities located in the roadway have been underpassed or supported by modified prefabricated elements. This method of making leveling adjustments by excavation work is costly and time consuming and requires a detour and often a lane to be closed.

It should be remembered that in the dynamic shocks that accompany road traffic, the entrance hatch is not usually only axially dropped, but also tilted to one side.

Also known from the state of the art are devices which make it possible to change the seating height of the hatches even without excavation work, as is clear, for example, from U.S. Pat. Nos. 4075796, CZ 250802, AU 409087 B, FR 2119178 A, and others. These devices are more or less intended for vertical adjustment of the hatch height. Upon dropping and tilting the hatch to the side, these devices no longer meet the height control requirement, and this must be dug, picked up, ground and leveled as standard.

SUMMARY OF THE INVENTION

The aforementioned drawbacks of the prior art are overcome by the height-adjustable and tilting sewer cover according to the invention for mounting on a vertical sewer shaft consisting of a lid and a frame whose essence is that the frame consists of a foot part which is fixedly fixed on the upper edge of the shaft. formed by a spacer and a tilting frame head, the spacer being rotatably mounted on the foot member and the head rotatably mounted on the spacer, wherein the contact surfaces between the spacer and the tilting frame head have a 4 ° bevel while a split nut with internal saw thread which engages an external saw thread formed on the collar of the lid, as well as that the parts of the split nut are connected by bolts to the nuts, or that the lid is provided with a lock on its inner side facing the shaft.

The height-adjustable and tilting sewer cover consists of nine parts. The basic part consists of a lid with an external thread, the second part is a split nut together tightened by two screws. A 45 ° saw thread is formed on the cover and nut. Depending on the direction of rotation of the split nut on the lid, the lid is axially displaced upwards or downwards. When the correct height correction is achieved, the split nut is tightly clamped by two screws to ensure that it cannot be rotated. Divided matrix

- is designed for easier disassembly with rusting with lid thread. Another part is a protective plate which is slid from above onto the tilting frame and serves to offset the height difference between the lid and the frame when extended. It also serves as protection against penetration of asphalt or other debris and dirt between the lid and nut.

The tilting frame itself serves to accommodate the height-adjustable hatch.

The tilting frame consists of three parts. The first part (head) allows to store a height-adjustable hatch in its upper part, where it has a recess. The lower surface of the first part (head) is inclined and has a 4 ° bevel. The second part (spacer) has an inclined upper surface and also has a 4 ° bevel. On this inclined surface at a bevel of 4 ° a portion of the first called head bears. The third (heel) part is circular in shape and is adapted to abut the entire lower surface, for example, on the shaft of the shaft, and is the supporting part of the whole device. The second part (spacer) with its lower straight part fits into the third part (heel part) and allows 360 ° rotation. When the first part (head) is rotated on the second part (spacer), the upper part is tilted up to a maximum of 8 °. To control the 0 ° slope, the second and third parts are provided with a groove on the circumference. When the grooves on the circumference of both pieces coincide with each other, a 0 ° inclination is guaranteed.

The lock, which is integrated on the bottom of the lid, serves to lock the lid with the nut in the tilting frame. Locking serves to prevent unauthorized manipulation of the lid and also against theft. The lid is locked and unlocked using a special key and a hole in the lid.

Clarification of drawings

An exemplary embodiment of a height-adjustable and tiltable sewer cover according to the invention is shown in the accompanying drawings, in which FIG. 4 shows the tilting frame and FIG. 6 the tilting frame with a maximum 8 ° inclination.

DETAILED DESCRIPTION OF THE INVENTION

The height adjustable and tilting sewer cover allows leveling up to a maximum range of 150 mm and tilting in all directions from horizontal to a maximum inclination of 8 ° and is designed for all common sewer and inspection manholes entrances.

The height adjustable and tiltable sewer cover is designed for placement on conventional circular shaft frames in roadways and is made up of nine basic parts as shown in the attached drawings. Referring to FIG. 1 and others, the upper part consists of a lid cover 1 with an external saw thread 3 formed on its collar and, for example, two halves of a split nut 2 with an internal saw thread 4 engaging the external saw thread 3. The parts of the split nut 2 are connected together by two screws 5 to the nuts 6. This upper part allows a continuous height adjustment. The 45 ° saw threads 3, 4 on the cover 1 and the split nut 2 are selected deliberately to reduce the radial forces acting on the nut 6 and the connecting screws 5 of the split nut 2. With axial loading of the cover 1 - hatch, radial forces on the split nut 2 are Because of the selected saw thread, the minimum and hence stress of the clamping screws 5 is not critical.

The division of the split nut 2 into at least two parts is chosen intentionally, since in operation it turns the threads 3, 4 between the cover 1 and the split nut 2. This rusting prevents the split nut 2 from rotating and consequently the possibility of continuous height regulation of the cover 1. When the threads 3, 4 between the cover 1 and the split nut 2 become rusty, it is possible to loosen the screws 5 with nuts 6 connecting the split nut 2, disassemble it and clean the saw threads 3, 4 on both the cover 1 and the split nut 2 After this operation, the split nut 2 can be folded and the mobility of the nut 2 on the lid 1 and thus the control function of this assembly is guaranteed. The cover 1 has an assembly on the upper surface

307335 B6 and drain holes 7, which serve both for venting the shaft, and for rainwater inlet, and for sliding a key (not shown) onto the lock 8, as shown in FIG. 4, for example. its stiffness, as shown in FIG. 4.

The lock 8 is integrated in the lid 1 against unauthorized lifting of the sewer cover or attempted theft. Locking and unlocking is performed using a special key (not shown).

The tilting frame allows the upper parts to be tilted arbitrarily to all sides, as described below. The separate tilting frame shown in Figures 5 and 6 consists of three parts, which are the head 10, the spacer 11 and the foot part 12. The upper part called the head 10, has a recess 16 at the top for receiving the height adjustable lid L a bevel 17 at an angle of 4 ° relative to its upper side. A vertical groove 14 is formed on the outside of the top head 10. The second piece, called intermediate piece 11, also has a bevel 17 at an angle of 4 ° with respect to its underside. On the outside of the spacer 11 there is a vertical groove 15. By adjusting the vertical groove 14, 15 on the head 10 and on the spacer 11, the cover 1 is secured in the 0 ° plane. When the upper part of the head 10 is rotated on the spacer 11, the head is tilted to a maximum of 8 °. The foot part 12 carries all the parts 1, 2, 5 and 6 of the tilting manhole cover with the parts of the tilting frame i.e. the head 10 and the spacer 11 and serves to seat on the shaft of the shaft. The head 10 and the intermediate piece 11 can be rotated 360 ° on the base 12. This rotation guarantees the orientation of the required tilt of the height adjustable hatch on all sides up to a maximum of 8 ° - see Fig. 3.

The protective plate 13 is slid from above onto the tilting frame. In the axial manipulation of the cover 1, i.e. raising or lowering of the cover 1 by rotating the split nut 2, i.e. compensating for unevenness of the road, the main task of the protective plate 13 is to prevent the asphalt or other debris needed to compensate the leveling of the road and dirt. and the split matrix 2.

In a situation where a height correction is required, the protective plate 13 mounted on the tilting frame is lifted and the lid 1 in the nut 2 is unscrewed to the necessary correction height. Giant. 3 shows the situation with the lid cover 1 not only axially but also to the side and how to solve this case. You can see situations with max. 8 ° alignment of the cover 1 with the ground level. Fig. 4 is a cross-sectional view of the lid 1 where the venting holes 7 can be seen. Further, half of the split nut 2 can be seen. Both 45 ° threads are clearly visible on both the lid 1 and the split nut 2. From the underside of the lid 1, reinforcing ribs 9 are shown to increase stiffness and a lock 8 against tampering with the lid L In the drawings of FIGS. 5 and 6, the tilting frame is shown in section. Giant. 5 shows a tilting frame with a recess 16 for seating the lid J. Two of these are the vertical grooves 14 and 15 for adjusting the plane to 0 °, the individual parts of the frame, the head 10, the spacer 11 and finally the bottom, heel 12. In FIG. the tilting frame is drawn with a maximum inclination of 8 °. Also seen are the bevels 17, both on the head 10 underneath and on the spacer 11 at the top at an angle of 4 °. When the hatch falls in the roadway or communication, the lid 1 is unlocked using a special key and the lid 1 and the nut 2 are removed from the upper part - the head 10 of the tilting frame. The protective plate 13, which is mounted on top of the tilting frame head 10, is raised to the communication level. The resulting depression between the road and the protective plate 13 is filled with asphalt or other mixture and suffocates. On the split nut 2, the clamping screws 5 with the nuts 6 are loosened and the split nut 2 is halved. The saw thread 3 on the cover 1 and the corresponding thread 4 in the split nut 2 are cleaned. After this operation, the halved nut 2 is again put on the lid 1 and appropriately grips the screws 5 with the nuts 6 so that the split nut 2 can be rotated. It is now necessary to rotate the split nut 2 on the cover 1 by the necessary height to compensate for unevenness. Then tighten the fastening screws 5 with the nuts 6 firmly in order to fix the split nut 2 against rotation on the cover L The cover 1 and the split nut 2 are put back into the upper part - frame head 10. And the repair of the dropped cover of the drainage cover 1 is complete.

Claims (3)

A height adjustable and tiltable sewer cover for installation on a vertical sewer shaft comprising a lid and a frame, characterized in that the frame is formed by a foot part (12) which is fixedly fixed on the upper edge of the shaft, further formed by an intermediate piece (11); a tilting frame head (10), the spacer (11) being rotatably mounted on the foot member (12) and the head (10) rotatably mounted on the spacer (11), wherein the contact surfaces between the spacer (11) and the tilting frame head (10) have a bevel (17) of 4 °, wherein the internal recess (16) of the head (10) houses a split nut (2) with an internal saw thread (4) engaging an external saw thread (3) formed on the lid collar ( 1). Height-adjustable and tilting sewer cover according to claim 1, characterized in that the parts of the split nut (2) are connected by screws (5) to the nuts (6). Height-adjustable and tiltable sewer cover according to any one of the preceding claims 1 and 2, characterized in that the lid (1) is provided with a lock (8) on its inner side facing the shaft.