RU185729U1 - REVISION HATCH - Google Patents

Abstract

The utility model relates to revision hatches intended for finishing with heavy facing materials. The technical results to which the utility model is aimed are to increase the loading capacity of the articulated linkage mechanism and increase the smoothness of movement of the levers of the articulated linkage mechanism. The indicated technical results are achieved by the fact that the levers are equipped with several sleeve elements that are joined to form a piano-type loop, holes in the sleeve elements of the external the chaga are made in the form of a hexagon, the rod has a hexagonal cross section, the vertical strut is made in the form of a hollow profile of a multifaceted cross section, each of the internal levers is equipped with a protrusion of a multifaceted cross section with a through vertical hole for free passage of the rod. 1 s.p. f-ly, 3 ill.

Description

The utility model relates to the field of construction, in particular to inspection hatches for providing access to hidden utilities intended for finishing with heavy facing materials, such as tiles.

The prior art revision hatches containing a pivot-lever mechanism for frontal extension of the hatch door from the frame opening with its subsequent rotation.

For example, from the description of patent RU 128236 U1, IPC Е06В 1/04, ЕВВ 3/32, publ. 05/20/2013, the known design of the revision hatch with a pivot-lever mechanism, including two pairs of horizontal levers, external and internal, connected by a central vertical strut.

By external horizontal levers in this application is meant a pair of levers pivotally attached at one end to the frame of the hatch door.

Under the internal horizontal levers refers to a pair of levers pivotally attached at one end to the frame, limiting the opening of the hatch.

To ensure smooth opening of the hatch, it is necessary to synchronize the rotation of each pair of horizontal levers.

In the design described in patent RU 128236 U1, central and lateral vertical posts are used to ensure synchronous rotation of the pairs of levers.

The disadvantage of the above design is the increased volume occupied by the hinged-lever mechanism of the hatch due to the presence of a lateral vertical strut, as a result of which the useful volume of the niche closed by the hatch objectively decreases.

The disadvantage of the above design is also the low load capacity of the articulated link mechanism. By the load-carrying capacity of the articulated link mechanism is meant the maximum mass of the hatch door with lining material attached to the door, which does not cause the hatch door to sag during operation.

The design of the revision hatch was taken for the closest analogue, see patent RU 92449 U1, IPC EV 3/32, publ. 03/20/2010, with a linkage mechanism including a central vertical strut and two pairs of horizontal levers, external and internal. The vertical column is hollow, threaded bushings are installed inside it at the ends, into which a central threaded rod is screwed with the ends protruding from the column. The internal horizontal arms are rigidly connected to the central vertical strut. The external horizontal levers are rigidly attached to the ends of the shaft with nuts and locknuts.

The advantage of the design is the reduced volume occupied by the hinged-lever mechanism of the hatch, thereby increasing the useful volume of the niche closed by the hatch.

The disadvantage of the closest analogue is the increased complexity of the assembly of the articulated link mechanism due to the need to adjust the position of the horizontal levers to ensure their correct positioning relative to each other.

Another disadvantage is the use of welded work in the manufacture of parts of the articulated lever mechanism, which worsen the appearance of the product and adversely affect the smooth movement of the levers of the articulated lever mechanism. The use of welded work also adversely affects the manufacturability of the product, since it increases the complexity and limits the use of plain bearings made of polymer materials.

A disadvantage of the analogue is also the low load capacity of the articulated link mechanism.

The technical results to which the utility model is directed are to increase the load capacity of the articulated linkage mechanism and increase the smoothness of the movement of the levers of the articulated linkage mechanism.

The above technical results are achieved in a revision hatch with a hinged-lever mechanism, which includes a hollow vertical strut with a rod located inside the strut and two pairs of horizontal levers, external and internal, with the internal levers connected to the vertical strut and the external levers with the rod.

Technical results are achieved by the fact that both the external and internal levers are equipped with several sleeve elements that are joined to form a piano-type loop, the holes in the sleeve elements of the external levers are made in the form of a hexagon, the rod has a hexagonal cross section, the vertical strut is made in the form of a hollow profile with a multifaceted cross-section, each of the internal levers is equipped with a protrusion of a multifaceted cross-section with a through vertical hole for free walking rod.

Moreover, in the holes of the sleeve elements of the internal levers can be installed bushings made of polyamide, which act as the axis of the hinges and bearings.

To increase the load capacity of the articulated link mechanism contributes to:

- the use of a piano-type loop with increased load capacity;

- the implementation of many faces on a vertical rack with a simultaneous increase in the diameter of the rack;

- using a profile steel bar.

Increasing the smoothness of movement of the levers of the articulated lever mechanism is achieved by increasing the accuracy of joining parts of the articulated lever mechanism through the use of profile elements for the mutual positioning of the hatch parts, and the use of internal levers of the bushings made of polyamide in the holes of the sleeve elements, which act as the axis of the hinges and sliding bearings.

The utility model is illustrated by the following images.

In FIG. 1 shows a revision hatch;

In FIG. 2 shows the inner and outer levers;

In FIG. 3 illustrates an inner arm, an outer arm, and a portion of a hollow upright.

The positions in the image are:

1 - frame frame;

2 - door frame;

3 - external lever;

4 - an internal lever;

5 - hollow vertical rack;

6 - a rod with a hexagonal cross section;

7 - hexagonal hole;

8 - polyhedral protrusion;

9 - sleeve elements of a piano-type loop;

10 - hole for the rod.

A utility model may be implemented in a hatch structure including, see FIG. 1, frame 1 of the frame made of a special profile, frame 2 of the door, reinforced with corners, a pair of external levers 3, a pair of internal levers 4; a hollow vertical rack 5 and a rod 6 located inside the rack 5.

The external horizontal levers 3 are pivotally connected at one end to the frame of the hatch door.

The internal horizontal levers 4 are pivotally connected at one end to the frame defining the opening of the hatch.

The hatch design can be equipped with devices for adjusting the position of the door in the vertical and horizontal planes, a pressure-type locking device, a sealing profile, and other devices that are not the subject of consideration in this application.

To implement the utility model, the following changes in the design of the device are performed.

Levers 3, 4, see FIG. 2, they are cast from silumin and supplied with several sleeve elements 9 that are joined together to form a piano-type loop.

As the rod 6, a steel bar of a hexagonal cross section is used.

The use of piano-type hinges, an upright stand 5 with an increased diameter and a multifaceted cross-section, as well as a pin 6, completely eliminates the sagging of the hatch door.

The holes 7 in the sleeve elements 9 of the external levers 3 are made with a cross-section in the form of a hexagon, so that the shaft 6 fits into these holes 7 with a slight clearance for assembly. Perpendicular to the axis of the hole 7 in the sleeve elements 9 of the external arms 3, through threaded holes are made into which screws are screwed to secure the shaft 6.

The vertical rack 5 is made in the form of a hollow profile of a multifaceted, for example, octagonal, cross section.

Each of the internal levers 4 is provided with a protrusion 8 of a multifaceted, for example, octagonal, cross-section with a through vertical hole 10, the diameter of which allows you to install a sleeve made of polyamide and freely pass through the hole 6 through the hole in the sleeve.

In the holes of the sleeve elements 9 of the internal levers 4, sleeves made of polyamide (not shown in Fig.) Are installed, which act as hinge axes and sliding bearings.

The ends of the internal levers 4 are rigidly connected to the vertical strut 5, for which the protrusions 8 are recessed into the hole of the vertical strut 5 and fixed with screws.

Assembly of the articulated link mechanism is performed in the following sequence.

Polyamide bushings are installed in the lower lever 4, joined with the corresponding lever 3, the hexagonal rod 6 is passed into the holes of the bushings, fixed with the screws in the hexagonal holes of the lever 3, a vertical rack 5 is put on the rod 6, and fixed with screws on the protrusion 8 , then a loop is assembled from the levers 3.4 located at the top and the upper end of the strut 5 is fixed on the protrusion 8 of the lever 4.

Then the ends of the levers 3,4 are pivotally fixed respectively to the door frame 2 and to the frame frame 1.

The steps for installing the frame of the inspection hatch in the wall opening, its fixation in the specified opening, the lining of the door with finishing materials and the operation of the hatch do not differ from the actions that apply to the inspection hatches known on the market.

In the course of patent research, the world novelty of the proposed technical solution was established.

The manufacture and operation of a prototype revision hatch confirmed the industrial applicability of the utility model and its compliance with the stated technical results.

Claims (2)

1. The revision hatch with a pivot-lever mechanism, the latter includes a hollow vertical strut with a rod located inside the strut and two pairs of horizontal levers, external and internal, with the internal levers connected to the vertical strut and the external levers with a rod, characterized in that the levers are equipped with several sleeve elements that are joined to form a piano-type loop, the holes in the sleeve elements of the external levers are made in the form of a hexagon, the rod has a hexagonal cross section, Vertical, reception is made in the form of a polyhedral hollow profile cross-section, each of the inner arm is provided with a polyhedral cross-sectional projection with a through vertical hole for the free passage of the rod. 2. The hatch according to claim 1, characterized in that in the holes of the sleeve elements of the internal levers are installed sleeves made of polyamide, which act as sliding bearings.

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