AU683367B2

AU683367B2 - Adapter and cap for waste compaction vehicle

Info

Publication number: AU683367B2
Application number: AU20265/95A
Authority: AU
Inventors: Wilfried Batke; Dieter Pfeifer
Original assignee: Intertractor AG
Current assignee: Intertractor AG
Priority date: 1994-05-28
Filing date: 1995-05-25
Publication date: 1997-11-06
Anticipated expiration: 2015-05-25
Also published as: FR2720302A1; DE4418757A1; GB2290506A; ES2120855B1; ITMI951057A0; ES2120855A1; GB2290506B; IT1274559B; GB9510790D0; ITMI951057A1; AU2026595A; FR2720302B1; DE4418757C2

Description

45351 DP:MG P/00/011 Regulation 3.2

AUSTRALIA

Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT

ORIGINAL

9 Name of Applicant: INTERTRACTOR AKTIENGESELLSCHAFT Name of inventors: WILFRIED BATKE SDIETER PFEIFER Address for Service: COLLISON CO., 117 King William Street, Adelaide, S.A. 5000 Invention Title: ADAPTER AND CAP FOR WASTE COMPACTION VEHICLE Details of Associated Provisional Applications: P4418757.2 dated 28th May 1994 The following statement is a full description of this invention, including the best method of performing it known to me/us: 1 Mj-d I I~ The invention concerns an adapter and a cap for a waste compaction vehicle, whose wheels have, distributed over their circumference and mutually interspaced, radially projecting, dimensionally stable cams intended for the compaction of waste, these cams being formed by adapter and cap, consisting in each case of an adapter fixed to the wheel and a detachable cap mounted torsion-free over the said adapter, whereby adapter and cap together form a body essentially shaped like a truncated pyramid, whereby the adapter in each case has a radially projecting polygonal cone tapering towards its free end, while the caps in each case have an insert opening to match the cone and whereby plug connection securing devices are proposed which in particular consist in each case of a pin, in the form of a dowel pin, passing in a detachable manner at right angles to the slip-on direction of the cap, through perforations of both the cap and the adapter, whereby particularly the *o perforations in the adapter and the cap for receiving the dowel pin are 1 5 mutually parallel offset in such a way that the inserted dowel pin exerts tensional forces on the cap in its slip-on direction, whereby particularly the cap o.i :side walls traversed by the dowel pin and bounding the insert opening of the caps are extended in relation to the unperforated side walls beyond the latter's free edges and whereby the adapters have recesses matching the side wall extensions and whereby the depth of the insert opening of the cap is greater than the insert length of the cone of the adapter.

::Such a design and arrangement are known from DE 35 40 183 C2.

disadvantage found with this known design is that after the cap has been mounted on the adapter and the plug connection securing device in the form of a dowel pin is being driven in, the cap tends to tilt slightly in relation to the adapter. This occurs while the dowel pin is first being driven into the corresponding bores of cap and adapter on one side so that the cap perforation on the opposite side no longer aligns with the bore or perforation of the adapter.

This tilting of the cap relative to the adapter creates assembly problems.

Furthermore the operation of waste compaction vehicles equipped with such adapters and caps has shown that the caps on the adapters can rotate slightly around the dowel pin whereby this rotation movement after prolonged operation of the waste compaction vehicle brings about that the corresponding 3 5 and cooperating front and rear lateral faces in the direction of travel of the 3 adapter and cap no longer fit tightly together so that the cap rattles on the adapter. This noise generation is considered disadvantageous.

Based on the above state of the art the invention is aimed at creating a design of a similar type which is easy to assemble and guarantees rattleproof seating even after prolonged operation.

To solve this problem it is proposed that there are on the unperforated front and rear wall of the adapter in the direction of rotation of the wheels, channels running parallel with the slip-on direction and which 1 0 accommodate, down from the head of the adapter, corresponding ridges profiled on the inner front and rear wall of the cap.

Therefore, according to a first aspect of the invention there is provided an adapter and cap for a waste compaction vehicle whose wheels have, distributed over their circumference and mutually interspaced, radially projecting, dimensionally stable cams intended for the compaction of waste, these cams being formed by the adapter and cap, consisting in each case of an adapter fixed to the wheel and a detachable cap mounted torsion-free over the said adapter, whereby the adapter and the cap combined form a body essentially shaped like a truncated pyramid, whereby the adapter in each case has a radially projecting polygonal cone tapering towards its free end, while the caps in each case have an insert opening to fit the cone and whereby plug connection securing devices are proposed which in particular consist in each case of a pin, in the form of a dowel pin, passing in a detachable manner at right angles to a slip-on 25 direction of the cap, through perforations of both the cap and the adapter, whereby particularly the perforations in the adapter and in the cap for receiving the pin are mutually parallel offset in such a way that the inserted f dowel pin exerts tensional forces on the cap in its slip-on direction, whereby particularly the cap side walls traversed by the pin and bounding 3 0 the insert opening of the caps are extended in relation to the unperforated side walls beyond the latter's free edges and whereby the adapters have recesses matching the side wall extensions and the depth of the insert opening of the cap is greater than the insert length of the cone of the adapter, characterised by the fact that there are on the unperforated front and rear walls of the adapter in the direction of the rotation of the wheels, channels or ridges running parallel with the slip-on direction and which accommodate, down from a head of the adapter, corresponding ridges or channels profiled on the inner front and rear wall of the cap.

The design of the channels and the corresponding ridges ensures straightline motion in the slip-on direction thus preventing tilting of the cap in relation to the adapter when the dowel pin or similar plug connection 1 0 securing device is being driven in. The perforation of the cap remains in line with the corresponding through-hole of the adapter so that the driving in of the connecting device particularly of the dowel pin is very easy and positionally accurate.

The invention also proposes that in kinematic reversal the ridges are formed on the adapter while the corresponding channels are on the inside of the cap.

A waste compaction vehicle equipped with such caps and adapters can be "operated in the normal manner, whereby rattling of the cap on the adapter is prevented by the corresponding shape of channels and ridges. Even 20 after prolonged operation disturbing noise development between cap and o• adapter is thus excluded.

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Furthermore it is preferable that the front surfaces of the ridges are orthogonal to the top face of the adapter and the cap and this also applies to the base surfaces of the channels.

Particularly preferential is that the width of the channels is about a third of the width of the front face of the adapter.

II 4 In a design where the adapter has ridges and the cap the corresponding channels, it is preferable that the width of the ridges is about half the width of the front surface of the adapter.

In a particularly preferred further development it is proposed that the front surfaces of the ridges and/or the channels have a spherical depression along the central longitudinal axis.

This depression results in well-defined contact between the adjacent surfaces of the adapter and the cap. This defined contact remains intact after prolonged operation even when there are settling phenomena. Although such 1 0 depressions may be provided both in the adapter and the cap, it is preferable l:that only one of these parts has this feature.

To facilitate the insertion of the pin into the perforations of the cap and the adapter, it is moreover proposed that the perforations of the cap and/or the adapter are chamfered in the insert direction of the pin as may also be the 1 5 case for the tip of the pin.

The corresponding perforations in both possible insert directions of the pin may be chamfered, or this chamfering may only be present on one side so that the insertion of the pin can and should only take place from this side.

An embodiment of the invention is shown in the drawings and described in more detail below.

ILLUSTRATIONS:

Fig. 1 to 3 different views of a cap; Fig. 4 to 6 different views of a corresponding adapter; Fig. 7 and 8 cap and adapter assembled in ideal mounting position; Fig. 9 variant of a cap viewed as per Fig. 3; Fig. 10 variant of an adapter viewed as per Fig. 6; b~ I Fig. 11 variant of an adapter with cap in assembled ideal position.

The drawings show an adapter 1 and a cap 2 for a waste compaction vehicle.

The adapter is attached to the circumference of the wheels of the waste compaction vehicle and together with the cap 2 forms cams for the compaction of waste. These cams consist in each case of an adapter 1 fixed to the wheel and a detachable cap 2 mounted torsion-free over the adapter. Together they form a body essentially shaped like a truncated pyramid. The adapters 1 in each case have a radially projecting polygonal cone tapering towards its free end, while the caps 2 in each case have an insert opening to match the cone.

Both parts are connected by a plug connection securing device mainly in the form of a dowel pin 3, in each case passing in a detachable manner through perforations of the cap 2 and also the adapter 1, these perforations being at .9 right angles to the slip-on direction of the cap 2. The perforations in the 1 5 adapter 1 and in the cap 2 are mutually parallel offset to receive the dowel pin so that the inserted dowel pin 3 tightens the cap 2 in its slip-on direction against the adapter. The cap side walls traversed by the dowel pin 3 and bounding the insert opening of the caps 2 are extended in relation to the unperforated side walls beyond the latter's free edges, whereby the adapters have recesses matching the side wall extensions. The depth of the insert opening of the cap 2 is greater than the insert length of the cone of the adapter 1.

On the unperforated front and rear wall 4 of the adapter 1 in the direction of rotation of the wheels there are channels 5 running parallel with the slip-on direction and which accommodate, down from the head of the adapter 1, corresponding ridges 6 profiled on the inner front and rear wall 7 of the cap 2.

The front surfaces 8 of the ridges 6 are orthogonal to the top face of the adapter 1 and the cap 2 which also applies for the base surfaces 9 of the channels 5. The width of the channels 5 is about a third of the width of the front 3 0 surface 10 of the adapter 1. The ridges 6 closely match the dimension of the channels 5. This design ensures that when the dowel pin 3 is driven in, the perforations of cap 2 and adapter 1 remain in line when the dowel pin is driven in on one side into the one perforation of the cap 2 and into the through-hole of the adapter 1. Moreover, the cooperation of the channels 3 5 with the ridges 6 prevents rotation of the cap 2 around the dowel pin 3 during the operation of a waste compaction vehicle thus equipped.

I The figures 9 and 10 show a variant in which the cap 2 has relatively broad channels 6' at its front and rear inner wall whose width is approximately half the width of the front and rear wall 7. The matching adapter 1 has at its front and rear wall projecting ridges 5' closely matching the dimensions of the channels 6'.

In this variant the centre of the ridges 5' or of the channels 6' features in each case a spherical depression 11 which is set back from the channel base or from the front surface opposite the channel base of the ridge These depressions 11 contribute to well-defined contact between the areas adjacent 1 0 to the depressions of the caps 2 and adapters 1 which are normally manufactured as cast parts, whereby defined contact surfaces remain intact il even if there are settling phenomena.

In the embodiment as per Fig. 11 the perforations of the cap 2 and the adapter 1 are chamfered in the insert direction of the pin 3 as is also the tip of the pin 3.

S. 15 The chamfering is indicated by 12. This feature facilitates the insertion of the pin 3.

The invention is not limited to the embodiment, but can be varied in many ways within the scope of the disclosure.

.o All new single and combined characteristics disclosed in the description and/or drawings are deemed to be an essential part of the invention.

S.

o S

Claims

1. An adapter and cap for a waste compaction vehicle whose wheels have, distributed over their circumference and mutually interspaced, radially projecting, dimensionally stable cams intended for the compaction of waste, these cams being formed by the adapter and cap, consisting in each case of an adapter fixed to the wheel and a detachable cap mounted torsion-free over the said adapter, whereby the adapter and the cap combined form a body essentially shaped like a truncated pyramid, whereby the adapter in each case has a radially projecting polygonal cone tapering towards its free end, while the caps in each case have an insert opening to fit the cone and whereby plug connection securing devices are proposed which in particular consist in each case of a pin, in the form of a dowel pin, passing in a detachable manner at right angles to a slip-on direction of the cap, through perforations of both the cap and the adapter, whereby particularly the perforations in the adapter and in the cap for receiving the pin are mutually parallel offset in such a way that the inserted dowel pin exerts tensional forces on the cap in its slip-on direction, whereby particularly the cap side walls traversed by the pin and bounding 20 the insert opening of the caps are extended in relation to the unperforated side walls beyond the latter's free edges and whereby the adapters have recesses matching the side wall extensions and the depth of the insert opening of the cap is greater than the insert length of the cone of the adapter, characterised by the fact that there are on the unperforated front and rear walls of the adapter in the direction of the rotation of the wheels, channels or ridges running parallel with the slip-on direction and which accommodate, down from a head of the adapter, corresponding ridges or channels profiled on the inner front and rear wall of the cap.

2. An adapter and cap as per Claim 1, characterised by the fact that the front surfaces of the ridges are orthogonal to the top face of the adapter and the cap as are the base surfaces of the channels.

3. An adapter and cap as per Claim 1 or 2, characterised by the fact that the width of the channels is approximately a third of the width of the front face of the adapter. L C_ Ist 8

4. An adapter and cap as per Claim 1, characterised by the fact that the width of the ridges is approximately half of the width of the front surface of the adapter.

5. An adapter and cap as per one of the Claims 1 to 4, characterised by the fact that the front surfaces of the ridges and/or the channels feature a preferably spherical depression along the central longitudinal axis.

6. An adapter and cap according to any one of Claims 1 to characterised by the fact that the perforations of the cap and/or the adapter 1 0 are chamfered in the insert direction of the pin as may also be the case for the tip of the pin.

7. Adapter and cap as defined in Claim 1 substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings. Dated this 5th day of August 1997 INTERTRACTOR 20 AKTIENGESELLSCHAFT By their Patent Attorneys COLLISON CO a a oo. a ABSTRACT In order to create an adapter and a cap for a waste compaction vehicle, whose wheels have, distributed over their circumference and mutually interspaced, radially projecting, dimensionally stable cams intended for the compaction of waste, these cams being formed by adapter and cap, consisting in each case of an adapter fixed to the wheel and a detachable cap mounted torsion-free over the said adapter and whereby there is provision for plug connection securing devices consisting in dowel pins which can be inserted into perforations of cap and adapter, which adapter and cap are easy to assemble 1 0 and guarantee a rattle-proof seat even after prolonged operation, it is proposed, that there are on the unperforated front and rear wall of the adapter in the direction of rotation of the wheels, channels running parallel with the slip-on direction and which accommodate, down from the head end of the adapter corresponding ridges profiled on the inner 1 5 front and rear wall of the cap Fig. 7 *e 5 SS S Se So oo. C 5* 1 II I