DE8412613U1 - Sprocket to drive flat top chains or pulley for vertical deflection - Google Patents

Description

PATENT ADVERTISEMENT DlPL.-ING. HARRY ROEVER

6β MANMHEIM-FEUOENHEIM AM BOOEN 2 3 POST BOX

April 19, 1984 R / ge K?, IUS Herzog

Leumundstrasse 9
692o S1nshe1m

Sprocket to drive flat top chains or Umienkroiie for their vertical ones Redirection

The invention relates to a chain wheel for driving the hinge ribbon chains. Such chain wheels serve, in addition to the drive, also for the pure support of flat top chains; her teeth 1n intervene in the spaces between the individual links of the flat top chains. The hinged collar chains themselves are used to transport objects, such as Bottles, cans, tubes, cardboard boxes, etc .; they are used, for example, in bottle filling systems. The invention is also applicable to pulleys that are used for the vertical deflection of such flat top chains.

The simplest known sprockets are in one piece and consist generally made of plastic. They have the disadvantage that they have to be exchanged after reaching a certain Due to the degree of wear, it is necessary to dismantle the bearing of the shaft carrying it or the entire drive station 1st.

There are therefore also multi-part chain wheels known "the one Full steel plastic hub and a 1n split in an axial plane Have plastic ring gear. Hler will after entering a certain amount of wear and tear * only the divisible plastic sprocket was replaced, both parts of which axially parallel star screws with the hub and thus indirectly connected to each other. Hler omitted thus a dismantling of the bearing or the entire drive station of the shaft carrying the sprocket. The same goes for For another "known construction" the one divisible Voli-Stahlnab «and also a divisible plastic gear rim having. The two hub points are across The screws running to the center line of the sprocket are connected to one another, the two plastic sprocket parts are in turn In the same catfish as for the preceding one Construction described by jachparailele screws on the Steel hub attached. These two divided versions have the disadvantage that they are very difficult to manufacture expensive and their assembly or disassembly is quite time consuming. Another major disadvantage of both split designs Is to be seen in it that for the application of a tool a not inconsiderable amount of space is required on the face to loosen or tighten the connecting screws so that the sprockets cannot be attached arbitrarily close to one another.

The invention is based on the object of providing a compartment that reports the described compartment parts and is very much easier to manufacture and to create a sprocket to be assembled or disassembled, but also split in an axial plane.

This object is achieved according to the invention in that the Fasteners the sprocket parts, each made up of a half Hub, half a sprocket and a half, in between

Hegenden wheel disc consist, connect with each other directly; _{ and with a secant shape to the outer circumference of the sprocket

y running center lines 1m space between hub and sprocket

and are arranged between the two star-shaped delimitation planes of the sprocket, exposed to the outside. - The

: both sprocket parts are very easy to manufacture} them

! can for example be identical to each other. Accordingly Such chain wheels can also be produced cheaply. D1ä assembly is very simple and requires much less λ free space than in the known constructions. That is true

γ. In particular if 1n further development of the invention

'The wheel disc is axially offset from the center plane of the chain wheel 1st and connecting elements are arranged only on one side of the wheel disc near the sprocket center plane, or exactly in this central plane, are provided. You then only need two connecting elements, but they do so as a result the construction described sit approximately in the longitudinal center of the sprocket and therefore an even exertion of force I effect on the sprocket parts, seen in the longitudinal direction

^; can.

% A particularly useful embodiment of the invention b £ -

:! ' it says that

a) the bore of the hub opposite the

% knife of the shaft carrying the sprocket

■■ ' is dimensioned in such a way that when

I bind the sprocket parts an interference fit of the

f Sprocket is generated on its shaft,

% and that

b) the strength of the pressure of this press fit and thus the mechanical stress di the pressing forces transmitting areas of the

\ and thus the mechanical stress on the

f / 4

Il · ·

Sprocket is limited durci; one each Spacer sleeve surrounding the fastening element: ";

at the same time a mutual centering i

of the two sprocket parts causes. f

As a result of the pressing forces that take effect here, it is no longer necessary to secure the chain wheel axially on its shaft; Typically, the otherwise provided, radially extending screw r can then be omitted in general. The spacer sleeve, which also effects the mutual centering of the two sprocket parts, prevents excessive pressure by limiting this pressure, and thus prevents excessive mechanical stress, possibly exceeding the yield point of those areas of the sprocket in which or over which the pressing forces are transmitted from the connecting element to the hub bore. This spacer sleeve will be made of a suitable metal. It also increases the stability of the sprocket against the rather high forces occurring on its circumference, which can be of the order of 500 kg.

'When is used as the connecting members bolts with nuts, it 1st purpose idly to form these screws as socket head screws, and also 1st also appropriate, the nuts hold Arbeltslage Somehow During, for example by light gluing, by jamming in Recording recess or 1n similar catfish. This prevents dfe ^^ ch from moving out of its correct position and possibly falling down when the screw is inserted.

Around a wandering of the Pißfeder between the hub and the sprocket To prevent the supporting shaft 1n in the axial direction, either the keyway 1n of the hub or the keyway In

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-s-

the shaft supporting this can only be made slightly longer or the same length as the length of the parallel key itself wants to close the keyway receiving groove in the sprocket on both sides, then you can no longer push this groove, but you it is then used in the manufacture of the sprocket inject.

In addition to screws, rivets or pinned connections can also be used as connecting elements Bolts with a Kell slot and wedges driven into them in question. You can also use permanent fasteners, including rivets. In this case, when the sprocket needs to be replaced, the old sprocket simply breaks apart as a whole.

The drawing shows an exemplary embodiment of the invention in which Allen screws are used as connecting elements with associated nuts are provided.

Figure 1 is an end view of a sprocket of this embodiment the invention.

FIG. 2 is a section along the line 1n of FIG Line A-B.

The two sprocket parts are denoted by 1 and 2 as a whole. They are composed of a hub 3, a gear rim 4 and a wheel disk 5 connecting the hub 3 and the gear rim 4. The axial division plane between the two sprocket parts 1, 2 is denoted by 6. As FIG. 2 shows, the wheel disk 5 is ^{offset to the right in relation to the 1} chain wheel center plane, 7.

The connection of the two sprocket parts 1, 2 takes place in each case by two Allen screws 8 with associated nuts 9, the both are shown only once in FIG. In Figure 1 above there is of course the same connection again. the Allen screw 8 1st surrounded by a spacer sleeve Io which the pressing force exerted by the screw 8 and the nut 9 when tightening on the bore 11 of the hub 3 is limited and the two sprocket parts 1, 2 at the same time exactly against each other centered. This spacer sleeve Io is also used for stabilization of the sprocket against the circumferential forces that take effect on 1hm. The spacer sleeve Io is supported by holes 12 added, located in web-like flanges 13 on the one side of the wheel disk 5 located to the left of the center plane 7 in FIG. 2 of the drawing.

The feet up ") imitate in the hub 3, in the case of the one shown Embodiment 1 is continuous in length, is denoted by 14. 15 Is a threaded hole for the usual locking screw, but, as already mentioned, can generally be omitted in the invention.

Shown as an exemplary embodiment is, as already mentioned, a sprocket to drive or support a flat top chain. The same basic construction can, however, as in the introduction already mentioned, also for a deflection roller (cylindrical on the circumference) for the vertical deflection of a flat top chain Find application.

It is expressly pointed out that the chain wheel or the deflection pulley also 1n more than in two parts (as described, shown and claimed) can be divided.

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Claims (8)

PATENT Attorney DIPL.-ING. HARRY ROEVER 68 MANNHEIM-FEUDENHEIM · AM BOGEN 23 · POST BOX Klaus Herzog Leumundstrasse 9 692o SinsheinT Protection claims 1. Sprocket to drive flat top chains or pulley for its vertical deflection, that or those in a Axial plane tollt 1st and its two sprocket parts are connected to one another by connecting elements such as screws, characterized in that the connecting elements (8, 9) the sprocket parts (1, 2), each consisting of a half hub (3), half a sprocket (4) and a half, Intermediate wheel disc (5) exist, connect with each other directly and with the outer circumference of the sprocket secant-shaped center lines 1m space between Hub (3) and ring gear (4) and between the two frontal boundary planes of the sprocket, exposed to the outside, arranged s <nd. 2. Chain wheel according to claim 1 made of plastic, characterized in that that a) the bore (11) of the hub (3) is dimensioned in relation to the diameter of the shaft carrying the sprocket so that when the sprocket parts (1, Z) are connected, a press fit of the ■ * Ff r »· T» Il Sprocket is generated on its shaft, and b) üie strength of the pressure of this press fit and thus the mechanical stress of the the areas of the sprocket that transmit press forces are limited by each Fastening element (8) surrounding spacer sleeve (lo), which at the same time a mutual Centering of the two sprocket parts (1, 2} causes. 3. Chain wheel according to claim 1 or 2, characterized in that the wheel disk (5) is arranged axially offset with respect to the chain wheel center plane (7) and connecting elements (8, 9) provided only on one side of the wheel disc (5) in the vicinity of or in the chain wheel center plane (7) are. 4. chain wheel according to one or more of claims 1 to 3, characterized in that the two chain wheel parts (1, 2) are identical to each other. 5. chain wheel according to one or more of claims 1 to 4, characterized in that its parting plane (6) is not runs through the keyway (14) of the hub (3). 6. chain wheel according to one or more of claims 1 to 5, characterized in that when using screws with nuts as connecting elements fMe screws as Allen screws (8) are formed. 7. chain wheel according to claim 6, characterized in that the nuts (9) in their working position by lightly locking stick, by jamming in your receiving recess or 1n similar catfish are held. 8. chain wheel according to one or more of claims 1 to 7, characterized in that the keyway (14) 1n of the hub (3) of the chain wheel or in the one carrying it Shaft is only a little longer or the same length as the parallel key self.