DE1775008A1 - Closure for quick-opening cover on explosion-proof and pressure-retaining envelopes - Google Patents

Description

Alexandr Pavlovich Poltoralc June 25, 1968

Donetak / üiSSR _p

ZEUENTIN ü. LUVKEII 1775008

waved

tüdwigshafen / RlfiiiiJjSGHLüß FOR SNOW OPENING LIDS ON EXPLOSION

SEE IJND DKUGKHALiEENDEN ENVELOPES

The present invention relates to cover closures, but more precisely to closures for tendon 11 opening covers explosion-proof and pressure-retaining enclosures.

The present invention may with best success for coats of electrical equipment used, which are intended for pits, which are dangerous in gas or explosion Staubaneammlung%, or when these devices are set up in areas in which explosive concentrations of vapor - Can form gas or dust-air mixtures, the invention can also be used for high-pressure boilers, submarines, tankers, pressure vessels, etc.

There are quick release lid closures for the above mentioned covers known and widely used, which have rotatable holders from a common drive, which as flat ones, e.g. mounted on the cover by means of axes | Levers are designed with the axes perpendicular to the plane of the cladding window which can be closed by the cover.

When the levers are rotated about their axes, the edges of the levers engage in the jacket slots, thereby closing the envelope is secured. (see e.g. English patents class 123 CD Wr. 412700, 660052, 847606, 965265) /

In the known types of locks, the flat fog rigidly attached to their axes of rotation. When operating envelopes

109824/0479 «o om _{Q (NAL}

With such fades, the pressure created under the cover acts on the pivot of these levers, causing elastic and plastic deformations and thus also an increase in the clearance between the associated edges of the cover casing.

In addition, cover and sheath have a geaeinsaae unevenness of the mutually associated bands, but dm the flat levers are fastened rigidly to the axles, to overcome this unevenness, whereby a greater wear of the associated Hebelfläcben and covering or jacket edges and correspond κ cbend an enlargement the clearances between the cover and the casing edges are created.

The present invention aims to eliminate the defects mentioned above.

The invention was based on the object of a To develop a fastener for a quick-release lid, the one ensures easy and quick opening and closing of the envelope, with a sealing insert and additives being provided between the cover and the jacket and an elevation the explosion protection of the enclosure, operational reliability and a long service life can be achieved.

The problem posed was achieved in that in the fastener according to the invention of the quick opening cover for the top called sheaths of each lever on a find a bot receiving the associated lid or jacket edges certain Has groove, which is formed from legs, which at

109824/0479

BATH ORIGINAL

the rotation of the levers around their axes of rotation the mentioned edges includes.

For a better understanding of the invention, a specific embodiment will be described below and there will be Drawings enclosed. It shows

1 shows the front view of the closure with the cover of the envelope open;

2 shows the rear view of the closure without the casing base when the enclosure lid is in the closed position; -

3 the rotatable lever of the lock according to the invention given;

FIG. 4 the section IV-IV of FIG. 2; Fig. 5 shows section V-V of Fig. 2; 6 shows the sieve of the second type of closure; FIG. 7 shows the section VTI-VII from FIG. 6; FIG.

8 shows the third type. View of the breech with the closed Position;

9 shows the lock in the open position.

The closure for tendon opening covers on explosion-proof and pressure-resistant covers consists of rotatable holders, which are designed as double-armed levers 1 (Fig. 1 _f 2), which are mounted on the cover 2 of the cover by means of the axes 3. As a cover the assigned cover and jacket are considered.

Bin each of the doppelaraigen lever 1 (Fig. 3) has on one End the groove 4 with the legs 5 and 6, the Rotation of the lever 1 about the axis 3 (Fig. 1) the associated

109824/0 ^ 79

BAD 0 "(QtNAL

_ 4 -

Edges 7 »8 corresponding to the cover 2 and the covering jacket 9 include. The lower legs 6 of the lever 1 (fig. 4) are in constant engagement with the edge 7 of the cover 2 and are arranged between this band and the projection IO, which is rigid is attached to the cover 2. The axes 3 are in the projections 10 screwed in.

The height of the lower leg 6 is slightly less than that Height of the groove formed between .Sand 7 and projection 10 as a result, the levers can move against each other when closing and opening the cover on the axes of rotation 3 move.

If the lever 1 is rotated, include at Close the fastener of the thighs 5 (Pig. 5) Band 8 of the jacket 9 and release the Ratnd when the closure is opened.

The height of the groove (of the fall) 4 on the levers 1 is by the selected clearance greater than the sum of the thicknesses of the edges 7 and 8 on the cover 2 and jacket 9 of the envelope.

The other end of each lever 1 forms with the former End an angle that is equal to about 90 °.

The levers 1 are about their axes 3 by the rollers 11, whose axes 12 (Pig. 5) are rigidly attached to the rotating ring 13, actuated.

The rotating ring 13 is placed around the central axis of the cover 2 rotated by the eccentrically mounted disc 14 (Pig. I), with the plates 15 rigidly attached to the ring 13 in

109824/0479

BAD (MI (QfNAL

Interaction stands. Due to the presence of the eccentric quick opening of the lid is ensured.

The ring 13 runs freely in the recesses of the projections 10 (FIG. 14) and is secured against falling out of the cover 2 in any position by the rotatable lever 1. The disk 14 is operated externally by the control lever 16.

The operation of the Verscblussea is as follows. To close the casing, the control lever 16 is pivoted through 180 °, while the hinge 13 is pushed through the disk 14 rotated around the Zentralacbse of the lid 2, the rollers 11 (Fig. 11) but run on the ends of the lever 1 and turn the the latter around their axes 3

As a result, the associated margins 7 »8 of the Cover 2 and jacket 9 through the legs 5 and 6 of the lever 1 and the tight union of the cover 2 with the jacket 9 takes place.

In the other embodiment of the closure, the axes of rotation of the rotatable levers are attached to the casing jacket, whereby the lid weight is reduced and the closures can be used for very large servings.

In this case, the levers 17 (Fig. 6,7) have axes of rotation lö which are attached to the casing 19. The type the lever 17 is similar to that described above.

109824/0479

The ends of the axles 13 sit with a clearance fit in the
Niches 20 of the mantle 19.

The levers 17 are rotated around the axes 18 by the ring 21
actuated, which consists of the disks 22 coupled to one another by means of pins 23. One of the discs 22 actuates the
Arm 17 'of lever I7. The ring 21 is driven, for example, by a worm drive not shown in the drawing.

The operation of the shutter of this embodiment is similar to that described above.

The present closure can also be used for envelopes with rectangular shaped lids. In lig _# 8 and 9, the third embodiment of the closure according to the invention for rectangular lids is shown. In this type of execution, the holders are designed as one-armed levers 24 which
are fastened on the cover 23 by means of the axes 26.

The movable bar 27, which is coupled to the levers by the joint members 28, is used to actuate the levers 24
is.

The bar 27 is actuated by the externally controlled, eccentrically mounted disc 29.

The operation of the shutter of this embodiment is similar to that described above.

From the examples it can be seen that the present closure for any cover design in which the lever arrangement can be both outside and inside the envelope, is suitable.

109824/04 79

IAD ORiQINAl

The attachment of the lever can either be on the lid

or on the cladding jacket. The axes can be in one piece with the levers, or separately from the latter.

The rotatable levers can be manufactured as single or double armed pieces. Sometimes u.zw. especially with rectangular ones With lids, the levers can be used simultaneously in the first and second modes. ^

The levers can either be through the interaction of their surfaces be actuated with the movable drive member directly or by interaction with this via intermediate parts.

The movable drive element can be made as a strip (strip), frame, washer, hing, nut or as a combined piece the enumerated parts are carried out.

The movable drive member can either outside or inside the enclosure by a manual drive (by gear, eccentric disc, lifting winch, etc.) or automatically (by hydraulic, electromagnetic or compressed air I drive, etc.).

Thus, the above-described embodiments of the closures make it possible to ensure a small clearance between the associated tapes of the lid and the casing jacket (in the range of 0.05 ··· 0.1 mm), which means that these closures Also used for explosion-proof enclosures that are used in potentially explosive rooms and outdoor facilities of all inflammation classes are suitable.

109824/0 / .79 _MD

On the closures described above, the Explosion pressure within the envelope through the legs d < Lever folds added with an arbitrary Sicborbeitßgrad aas high quality steel can be manufactured. The edges of the lid and jacket take the shear and bending clamps through a leg closed at the circumference, as a result of which these parts remain stable against any pressure values that occur in practice within the envelope P ben. The axes of rotation of the levers are not affected by the explosion pressure claimed.

In practice, the present closure can be made for any pressure value.

As the lid when opening and closing with respect to the jacket is immobile, can be placed between the lid and the wrapping to protect the envelope seals against dust and moisture and, if necessary, additives be relocated to the Etrploaionsscbutzerhöhung. The wear of coatings on the explosion-proof surfaces of the casing is < completely prevented in practice with this closure.

Because when you close the lid, the rotatable lever through their legs run up on the associated cover and jacket perpendicular to the Ianenränder of the latter, is the path of the • Lever friction surfaces equal to the width of the leg when opening and closing (VlO ms), i.e. about ten times smaller than at the bayonet cover. The holder is not by the Gaoamtunbenheit the assigned edges dea Deokela and Um-

109824/0 /, 79

INSPECJTH)

Enveloping jacket claimed.

Therefore, the mechanical wear of the present fastener is almost completely eliminated in practice (according to 5000 openings-closings results in 0.05 mm wear).

In long-continued operation of the shutter for Sehnellöffnungsdeckel as well as due to deformation of the closure parts by Expolsionen may enter a certain increase in the clearance between the zugeordne-% th edges of the lid and the shell in comparison with the durcn the rules standardized clearance dimension as a result of abrasion of parts.

A local increase in play can be achieved with the present closure by replacing the rotatable levers with new ones be eliminated.

An overhaul of the lock can also be carried out by moving the levers to new places in the zones in which the levers were previously not in use.

109824/0 / .79 Mo omaiNAL

Claims (1)

PATENT APPLICATION: Closure for tendon opening cover on explosion-proof and pressure-retaining envelopes, which contains rotatable holders from a single drive, which are designed as levers, which are mounted on the envelope by means of axes which are arranged perpendicular to the plane of the envelope inantelf window that can be closed by the lid, characterized that each of the levers (1, 17 and 24) has a groove (4) at one end which is intended to receive the associated edges (7 and 8) of the cover (2, 25) and casing (9t 19) and which has the legs which, when the levers (I ₁ 17 and 24) are rotated about their axes of rotation (3, 18 and 26), encompasses the edges mentioned. 109824/0479 BATH ORIGINAL