[0001] The present invention relates to a method for manufacturing a support part for a
pick-up frame forming part of a loading system for emptying a container.
[0002] Known loading systems are used to empty for instance refuse bins into refuse trucks.
The truck is herein provided at the rear with a loading system with a pick-up frame.
Using a lifting mechanism, the loading system causes the refuse bin for emptying to
undergo a pivoting movement. Such a pick-up frame herein hooks onto the container
with its outer ends of the lifting mechanism, for instance in the form of lifting
arms, and then makes the pivoting movement, whereby the refuse bin is placed substantially
upside down above the refuse truck and the refuse for removal is emptied out of this
container into the refuse truck. During the pivoting movement the container is supported
with a carrier part.
[0003] EP 1 621 481 discloses a method according to the preamble of claim 1 and describes a container
gripping device comprising a support part with a carrier part and a contact part having
resilient front rests.
[0004] Because the containers for emptying are generally situated on the ground, i.e. level
with the vehicle, the pick-up frame must pick up or support the containers relatively
low to the ground. This means that the pick-up frame is provided with various parts,
such as the carrier part, which are situated relatively low to the ground. Since vehicles
provided with a loading system with such a pick-up frame generally move in densely
populated areas, such as villages and cities, such a vehicle must manoeuvre frequently
in order to avoid obstacles such as posts and speed bumps. It has been found in practice
that, among other obstacles, speed bumps frequently cause damage, particularly to
the pick-up frame. This has the result, among others, of high maintenance and repair
costs, limited availability of the vehicle and interruptions in the collection of
refuse.
[0005] The present invention has for its object to provide a support part for a pick-up
frame, wherein such damage and downtime are prevented or reduced in a user-friendly
manner.
[0006] The present invention provides for this purpose a method for manufacturing a support
part for a pick-up frame forming part of a loading system for emptying a container
according to claim 1.
[0007] By shaping a piece of plate material a carrier part is formed for the container or
refuse bin. The container herein rests on this carrier part, wherein a flexible material
is arranged between the carrier part and the container in order to form a contact
part. Damage to the container is prevented by the flexible material and a degree of
damping is also provided, whereby among other things the transmission of undesirable
vibrations is limited. Through the use of the flexible material instead of for instance
moving parts, wear of such moving parts is also prevented. The support part is obtained
by assembling this carrier part and contact part using the first fixing means. The
carrier part is herein movable relative to the pick-up frame. This is for instance
relevant if the vehicle on which the loading system is arranged reverses and for instance
makes contact with a speed bump or kerb. In such a case the carrier part will give
away or yield or bend, and damage and the like is avoided. The bending movement or
rotating movement of the carrier part relative to the pick-up frame takes part largely
in an angle or edge which is formed during the shaping. If the vehicle moves forward
and drives off a speed bump or kerb, it is also possible for the support part placed
relatively low to the ground to make contact with the ground. Damage is in this case
also prevented by providing this part for movement relative to the pick-up frame.
This movement takes place by tilting around a tilting point corresponding to the bending
point of the carrier part as arranged during shaping of the carrier part. This tilting
point is preferably situated on or close to the outer end of the lifting arm construction
of the pick-up frame.
[0008] In a preferred embodiment according to the invention the carrier part is heated during
shaping of the plate material and the carrier part is bent through an additional angle
in order to compensate for the bending back during the cooling process.
[0009] Because the plate material, which is to some extent ) flexible, is cooled, some degree
of bending back to the starting position of the plate material will take place. Already
compensating for this during shaping avoids an extra process having to be performed
on the carrier part.
[0010] In a preferred embodiment according to the invention at least one recess is provided
during forming of the contact part.
[0011] The flexibility of the contact part is increased further by providing a recess in
this contact part. A better support and damping of the container is hereby obtained.
The at least one recess is preferably arranged extending in width direction of the
loading system. A substantially uniform support is hereby obtained over the whole
width.
[0012] In a further preferred embodiment according to the invention the forming of the carrier
part also comprises of placing at least one strengthening rib in one or more of the
recesses over at least a part of the length of this recess.
[0013] Arranging the at least one strengthening rib achieves that the contact part is strengthened
such that it remains form-retaining and is better able to absorb the changing loads
caused by the containers. An additional advantage is that the contact part can be
connected to the carrier part by means of the strengthening rib, preferably via a
screw connection. The number of components and other parts hereby remains limited.
[0014] By providing the assembly surface a connecting surface is obtained between the carrier
part and the other parts of the pick-up frame. The forces which occur can hereby be
transmitted better. It is hereby also possible to realize a good connection between
the support part and the pick-up frame, such that these parts remain connected even
when relatively great forces occur in the case of contact with a speed bump or kerb.
[0015] In a further preferred embodiment according to the invention, the shaping of the
piece of plate material is performed on plate material manufactured from high-density
polyethylene.
[0016] The use of high-density polyethylene (HDPE) results in a carrier part being obtained
which is flexible to some extent and can move relative to the pick-up frame in order
to absorb the loads which occur. These are not only loads resulting from the containers,
but also loads resulting from contact with, among other obstacles, speed bumps and
kerbs. The contact part is preferably formed from a rubber material so as to thereby
realize sufficient flexibility and elasticity.
[0017] In a further preferred embodiment according to the invention the periphery of the
contact part is provided in a kind of D-shape.
[0018] By forming the contact part in a kind of D-shape, wherein the bent side is in contact
with the container, applied loads are absorbed better. Relatively heavy containers
will further compress the contact part in order to thereby obtain a larger contact
surface, whereby peak loads which occur can nevertheless remain limited.
[0019] The invention further relates to a loading system and a vehicle provided with such
a loading system provided with a support part manufactured as according to one or
more of claims 1-8. These provide the same effects and advantages as those stated
in respect of the method.
[0020] Further advantages, features and details of the invention are elucidated on the basis
of a preferred embodiment, wherein reference is made to the accompanying drawing,
in which:
fig. 1 shows a side view of a vehicle provided with a loading system with support
part according to the invention;
fig. 2 shows a detail view of the support part according to the invention;
fig. 3 is a view of the pick-up frame, shown in perspective, provided with a support
part according to the invention;
fig. 4 shows a side view of a part of the pick-up frame with the support part of fig.
3;
fig. 5 shows a detail view of the support part of fig. 4; and
fig. 6 shows a side view according to fig. 4, wherein a heavier container is being
lifted.
[0021] A vehicle 2 (fig. 1) is provided with a pick-up frame 4 with a protective part 6
arranged thereon. In the shown embodiment this protective part 6 protrudes furthest
to the rear in the direction of travel. Pick-up frame 4 further has a support part
8 for supporting a refuse bin to be lifted.
[0022] Support part 8 (fig. 2) is situated relatively low to the ground and, in the case
vehicle 2 moves in the direction indicated by arrow A, support part 8 will make contact
with speed bump 10 when wheels 12 of vehicle 2 move off this speed bump 10. Support
part 8 is movably connected to pick-up frame 4. In the case where pick-up frame 4
will make contact with the ground, such as speed bump 10, support part 8 will tilt
relative to pick-up frame 4 in the direction indicated by arrow B without here permanently
deforming.
[0023] Pick-up frame 4 (fig. 3) is provided with a number of hooks or forks provided with
teeth 14 which engage under an edge of the container. The shown pick-up frame 4 consists
of two mirrored parts with which it is possible, using the two parts, to empty two
individual containers together or a container of larger dimensions. Pick-up frame
4 has an assembly surface 16 to which carrier part 18 of support part 8 is fixed.
Carrier part 18 is provided for this purpose with an assembly surface 20. Assembly
surface 20 is connected to the other part of pick-up frame 24 using strip 22 and fixing
bolts 24. Support part 8 is further provided with an angular point 26 located close
to the outer end of assembly surface 16 of pick-up frame 4. This angular point or
tilting point 26 is situated between assembly surface 20 and the connecting carrier
part 28 of carrier part 18. The connecting carrier part 28 is connected to contact
part 30. This contact part 30 is provided with two relatively large recesses 32 in
which a fixing surface 34 for strengthening rib 36 is arranged. In addition, contact
part 30 is provided with a recess 38.
[0024] Support part 8 (fig. 4) serves to support a container 40 which is picked up using
forks 14 of pick-up frame 4. Container 40 herein rests on support part 8 via contact
part 30, which in the shown embodiment has a kind of D-shape. In the situation shown
in fig. 4 the container 40 is in practically horizontal position, so halfway between
the position set down on the ground and the emptying position above truck 2. Contact
part 30 (fig. 5) is connected to the connecting carrier part 28 by means of a bolt
connection 42. Strengthening rib 36 is provided for this purpose with screw thread
into which bolt 42 can be screwed. The head of bolt 42 herein lies flush in the fixing
carrier part 28 in order to prevent damage and even possible injury. In this fixing
the strengthening rib 36 serves to clamp contact part 30, which is thereby connected
to the connecting carrier part 28. Assembly surface 20 is connected to assembly surface
16 of pick-up frame 4 by means of a bolt connection 24. When a heavier container 40
is lifted (fig. 6), a greater force must be absorbed by contact part 30. For the shown
embodiment fig. 4 shows the setting-down of an emptied container 40 and fig. 6 shows
the lifting of a container 40 which is still full.
[0025] In order to empty a container 40 the hooks 14 of pick-up frame 4 engage under the
edge of container 40. Through rotation of the lifting arms of pick-up frame 4 container
40 tilts and makes a pivoting movement from the ground to a position above refuse
truck 2. Container 40 is herein supported by support part 8, wherein container 40
rests on contact part 30. If the pick-up frame makes contact with an obstacle or the
ground during travel of vehicle 2, support part 8 will co-displace through bending
or rotation of connecting carrier part 28 around the shaped angle or tilting point
26 in order to prevent, or at least limit, damage and the like.
[0026] The present invention is by no means limited to the above described embodiment; the
rights sought are defined by the following claims, within the scope of which many
modifications can be envisaged. It is thus possible for instance to provide tilting
point 26 as a hinge in order to realize an even greater degree of flexibility. Contact
part 30 can also be embodied as a single element together with carrier part 18. This
has the advantage that the individual components do not have to be assembled. It is
for instance also possible to have carrier part 18 form an integral part of pick-up
frame 4. Another possible option is to fill recesses 32 and/or 38 wholly or partially
with material, wherein this material can be of a type different from that of contact
part 30. This can for instance achieve that a better positioning of container 40 on
support part 8 is obtained, wherein the degree of damping by support part 8 is for
instance adjusted to the specific requirements made thereof.
1. Method for manufacturing a support part (8) for a pick-up frame (4) forming part of
a loading system for emptying a container (40), comprising the steps of:
- shaping a piece of plate material in order to form a carrier part (18), comprising
a connecting carrier part (28);
- forming a flexible material for realizing a contact part (30) between the carrier
part (18) and the container (40);
- obtaining the support part (8) by assembling the contact part (30) with the connecting
carrier part (28) using first fixing means (36,42); and characterized by
- providing the carrier part (18) with an assembly surface (20) with which the carrier
part (18) is connected to the pick-up frame (4), using second fixing means (22,24)
for fixing the carrier part (18) to the pick-up frame (4); and
- during shaping forming a bending point (26) of the carrier part (18) between said
connecting carrier part (28) and said assembly surface (20) for movement of the connecting
carrier part (28) relative to the pick-up frame (4).
2. Method as claimed in claim 1, wherein the plate material is heated during shaping
and the carrier part is bent through an additional angle in order to compensate for
the bending back during the cooling process.
3. Method as claimed in claim 1 or 2, wherein at least one recess (32) is provided during
forming of the contact part.
4. Method as claimed in claim 3, wherein the at least one recess (32) is arranged extending
in width direction of the loading system.
5. Method as claimed in claim 3 or 4, wherein the forming of the support part comprises
of placing at least one strengthening rib (36) in one or more of the recesses over
at least a part of the length of this recess.
6. Method as claimed in one or more of the claims 2-5, wherein the shaping of the piece
of plate material is performed on plate material manufactured from High-Density Polyethylene.
7. Method as claimed in one or more of the claims 1-6 wherein the forming of the contact
part is performed with a rubber material.
8. Method as claimed in one or more of the claims 1-7, wherein the periphery of the contact
part is provided with a kind of D-shape in order to enable better absorption of applied
loads.
9. Loading system for emptying a container (40), comprising:
- a pick-up frame (4) for picking up, tilting and re-placing the container; and
- a support part (8) manufactured as claimed in one or more of the claims 1-8.
10. Vehicle (2) provided with a loading system as claimed in claim 9.
1. Verfahren zur Herstellung eines Stützteiles (8) für ein Aufnahmegestell (4), welches
Teil einer Ladeanlage zum Entleeren eines Behälters (40) bildet, umfassend die Schritte:
- Formen eines Stückes aus Plattenmaterial zur Bildung eines Trägerteiles (18), umfassend
ein Verbindungs-Trägerteil (28),
- Bilden eines flexiblen Materials zur Realisierung eines Kontaktteiles (30) zwischen
dem Trägerteil (18) und dem Behälter (40),
- Erzielen des Stützteiles (8) durch Zusammenbau des Kontaktteiles (30) mit dem Verbindungs-Trägerteil
(28) unter Verwendung einer ersten Befestigungseinrichtung (36, 42),
und
gekennzeichnet durch
- Versehen des Trägerteiles (18) mit einer Zusammenbaufläche (20), mit der das Trägerteil
(18) mit dem Aufnahmegestell (4) verbunden ist, unter Verwendung einer zweiten Befestigungseinrichtung
(22, 24) zum Befestigen des Trägerteiles (18) an dem Aufnahmegestell (4)
- und Bilden einer Abwinklungsstelle (26) des Trägerteiles (18) zwischen dem Verbindungs-Trägerteil
(28) und der Zusammenbaufläche (20) während des Formens zur Verschiebung des Verbindungs-Trägerteiles
(28) relativ zu dem Aufnahmegestell (4).
2. Verfahren nach Anspruch 1, wobei das Plattenmaterial während des Formens erwärmt wird
und wobei der Trägerteil über einen zusätzlichen Winkel gebogen wird, um das Zurückbiegen
während des Abkühlungsprozesses zu kompensieren.
3. Verfahren nach Anspruch 1 oder 2, wobei während des Bildens des Kontaktteiles zumindest
ein Ausschnitt (32) vorgesehen wird.
4. Verfahren nach Anspruch 3, wobei der zumindest eine Ausschnitt (32) in Richtung der
Breite des Ladesystems verlaufend angeordnet wird.
5. Verfahren nach Anspruch 3 oder 4, wobei das Bilden des Stützteiles ein Platzieren
zumindest einer Versteifungsrippe (36) in einem oder mehreren der Ausschnitte über
zumindest einen Teil der Länge dieses Ausschnittes umfasst.
6. Verfahren nach einem oder mehreren der Ansprüche 2 bis 5, wobei das Formen des Stückes
aus Plattenmaterial an einem aus hochdichtem Polyäthylen hergestellten Plattenmaterial
ausgeführt wird.
7. Verfahren nach einem oder mehreren der Ansprüche 1 bis 6, wobei das Bilden des Kontaktteiles
mit einem Gummimaterial ausgeführt wird.
8. Verfahren nach einem oder mehreren der Ansprüche 1 bis 7, wobei der Umfang des Kontaktteiles
mit einer Art von D-Form versehen wird, um ein besseres Auffangen von angewandten
Belastungen zu ermöglichen.
9. Ladesystem zum Entleeren eines Behälters (40), umfassend:
- ein Aufnahmegestell (4) zum Aufnehmen, Kippen und Zurücksetzen des Behälters,
- und ein Stützteil (8), welches nach einem oder mehreren der Ansprüche 1 bis 8 hergestellt
ist.
10. Fahrzeug (2), welches mit einem Ladesystem versehen ist, wie es im Anspruch 9 beansprucht
ist.
1. Procédé de fabrication d'une partie de soutien (8) pour un cadre de ramassage (4)
formant une partie d'un système de chargement destinée à vider un contenant (40),
comprenant les étapes de :
- façonnage d'une pièce de matériau en plaque afin de former une partie de support
(18), comprenant une partie de support de raccordement (28) ;
- formation d'un matériau flexible pour réaliser une partie de contact (30) entre
la partie de support (18) et le contenant (40) ;
- obtention de la partie de soutien (8) en assemblant la partie de contact (30) avec
la partie de support de raccordement (28) en utilisant un premier moyen de fixation
(36, 42) ; et caractérisé par :
- la fourniture à la partie de support (18) d'une surface d'assemblage (20) avec laquelle
la partie de support (18) est raccordée au cadre de ramassage (4), en utilisant un
second moyen de fixation (22, 24) destiné à fixer la partie de support (18) au cadre
de ramassage (4) ; et
- pendant le façonnage, formation d'un point de flexion (26) de la partie de support
(18) entre ladite partie de support de raccordement (28) et ladite surface d'assemblage
(20) pour un mouvement de la partie de support de raccordement (28) par rapport au
cadre de ramassage (4).
2. Procédé selon la revendication 1, dans lequel le matériau de plaque est chauffé pendant
le façonnage et la partie de support est fléchie selon un angle supplémentaire afin
de compenser le recourbement pendant le processus de refroidissement.
3. Procédé selon la revendication 1 ou 2, dans lequel au moins un évidement (32) est
fourni pendant la formation de la partie de contact.
4. Procédé selon la revendication 3, dans lequel le au moins un évidement (32) est agencé
s'étendant en direction de la largeur du système de chargement.
5. Procédé selon la revendication 3 ou 4, dans lequel la formation de la partie de support
comprend le placement d'au moins une nervure de renforcement (36) dans un ou plusieurs
des évidements sur au moins une partie de la longueur de cet évidement.
6. Procédé selon une ou plusieurs des revendications 2 à 5, dans lequel le façonnage
de la pièce de matériau en plaque est réalisé sur un matériau en plaque fabriqué à
partir de polyéthylène haute densité.
7. Procédé selon une ou plusieurs des revendications 1 à 6, dans lequel la formation
de la partie de contact est réalisée avec un matériau en caoutchouc.
8. Procédé selon une ou plusieurs des revendications 1 à 7, dans lequel la périphérie
de la partie de contact est dotée d'un type de forme en D afin de permettre une meilleure
absorption des charges appliquées.
9. Système de chargement destiné à vider un contenant (40), comprenant :
- un cadre de ramassage (4) destiné à ramasser, incliner et replacer le contenant
; et
- une partie de soutien (8) fabriquée selon une ou plusieurs des revendications 1
à 8.
10. Véhicule (2) doté d'un système de chargement selon la revendication 9.