DE20002971U1 - Skip loader - Google Patents

Description

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LOTS & LOTS * 3"""^f# 00031/22.2.00

European Patent Attorneys

DESCRIPTION Skip loader

The invention relates to a skip loader with pivoting arms arranged at the end of a loading area for picking up or setting down swap bodies, wherein front, side and rear container stops are provided on the loading area for securing the swap bodies during transport.

Such skip loaders are well known and described in DIN 30723. When transporting swap bodies with such skip loaders, it is mandatory to secure the swap bodies on the loading area during transport in order to prevent the swap body from slipping forwards and to the side, particularly during braking. Since the swap bodies transported vary in size, at least the front and side container stops must be adjusted to the respective container size and locked during transport. This adjustment is usually done manually and a locking bolt is used for locking.

The applicants have found that such mandatory transport securing is often not carried out - usually for reasons of convenience or lack of time - and the swap body is transported unsecured on the skip loader. This represents a great danger for the skip loader driver and for other road users.

The invention is therefore based on the object of ensuring that the swap body is secured during transport.

This object is achieved according to the invention in that the front and/or side and/or rear container stops can be moved to the container via a drive and can be blocked in the end position.

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MUCH & MUCH 4 00031/22.2.00

European Patent Attorneys

This eliminates the laborious and time-consuming manual securing of the transport container. By simply operating the device according to the invention, a swap container of any shape can be secured. In addition, the positive connection between the container stops and the swap container reduces noise during transport.

One embodiment of the invention consists in that the container stops are arranged in the floor area of the swap body on the loading area.

These container stops, which take up little space, prevent the container stops arranged on the loading area from limiting the use of the skip loader. Nevertheless, securing the swap body in the floor area is sufficient if the container stops are moved against the swap body with sufficient contact pressure.

It is advantageous that the container stops are designed as elements with a rectangular cross-section that protrude upwards from the loading area.

Such container stops rest with one side on the outer wall of the swap body and thus ensure a good form-fitting connection between the container stop and the swap body.

Furthermore, it is expedient for the free ends of the container stops to be bevelled towards the swap body.

This allows the container stop to rest against the often sloping outer wall of the swap body (particularly at the front and rear).

It is within the scope of the invention that the drive of the container stops is hydraulic, via a chain drive, via a spindle drive, via rack and pinion gears or via a lever linkage.

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MUCH & MUCH 5 00031/22.2.00

European Patent Attorneys

It is advantageous that the front, side and rear container stops can be moved simultaneously.

This means that the swap body can be secured in one movement, which saves time.

A preferred embodiment of the invention consists in that each container stop is movable in the direction of the swap container and in the opposite direction, that differential hydraulic cylinders are assigned to the container stops, and that all differential hydraulic cylinders are arranged in a hydraulic system comprising a hydraulic container, a pump, a control valve, a releasable check valve and a pressure relief valve.

Finally, it is possible for a differential hydraulic cylinder to be assigned to each container stop individually or to groups of container stops.

An embodiment of the invention is described below with reference to drawings.

Show it

Fig. 1 is a side view of a

Swap body with container stops according to the invention,

Fig. 2 is a rear view of the illustration in Fig. 1,

Fig. 3 is a schematic representation of hydraulically operated

movable container stops.

As shown in Fig. 1, the skip loader according to the invention has a swap body 2 on its loading area 1, which is to be secured for transport purposes. This is done via

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MUCH & MUCH 6 00031/22.2.00

European Patent Attorneys

Container stops 3 (shown here: the front and rear container stops 3a and 3c) that can be moved along the loading area 1 in the direction of the swap body 2 are actuated in the example shown by hydraulic cylinders 4. The container stops 3 are designed as elements with a rectangular, here square, cross-section that protrude from the loading area 1 and are arranged in the floor area of the swap body 2 and rest on the swap body 2 with one side. In order to take into account the slanted design of the outer wall of the swap body 2, particularly on its front and rear, the free ends of the container stops have bevels 4 towards the swap body.

As can be seen from Fig. 2, the container stops 3 (shown here: the side container stops 3b) can be moved within an adjustment range via a drive. The adjustment range is, for example, approx. 250 mm for the side container stops 3b (distance between the container stops from 1600 to 1850 mm) and approx. 1100 mm for the front and rear container stops 3a, 3c. This means that all standard swap containers 2 can be secured on the loading area 1.

From the diagram shown in Fig. 3 it can be seen that the container stops 3 (here two each at the front, side and rear) are assigned differential hydraulic cylinders 5, which in turn are part of a hydraulic system with a hydraulic container 6, a pump 7, a control valve 8, a releasable check valve 9 and a pressure relief valve 10. It is possible that the container stops 3b are each assigned a differential hydraulic cylinder 5 individually or groups 3a, 3c of container stops 3.

The operation of the container stops 3 is described below. Before a swap body 2 is placed on the loading area 1 using the swivel arms of the skip loader, the container stops 3 are moved by their drive into the extended position, in which the distance between the container stops 3 is maximum. If the swap body 2 is arranged on the loading area 1, the differential hydraulic cylinders 5 are pressurized via the pump 7 and the control valve 8 and moved towards the swap body 2 until they reach

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Lots & Lots * 7* ** " 00031/22.2.00

European Patent Attorneys

The contact pressure of the container stops 3 on the swap container 2 is limited by the pressure relief valve 10 (e.g. to a value of 50 bar) and the container stops are blocked in this position by the check valve 9.

The container stops 3 are released in the reverse order, starting with the unlocking of the check valve 9.

Of course, it can also be provided that only individual container stops 3 are actuated (e.g. not the rear ones if the shape of the swap body 2 does not allow this). The drive can also be carried out in a way other than hydraulic, e.g. via chains, a spindle or rack drive or via a lever linkage.

Claims (8)

1. Skip loader with pivoting arms arranged at the end of a loading area for picking up or setting down swap bodies, front, side and rear container stops being provided on the loading area to secure the swap bodies during transport, characterized in that the front ( 3 a) and/or side ( 3 b) and/or rear ( 3 c) container stops ( 3 ) can be moved or pivoted up to the swap body ( 2 ) via a drive and can be locked in the end position. 2. Skip loader according to claim 1, characterized in that the container stops ( 3 ) are arranged in the bottom area of the swap body ( 2 ) on the loading area ( 1 ). 3. Skip loader according to claim 1, characterized in that the container stops ( 3 ) are designed as elements with a rectangular cross-section projecting upwards from the loading area ( 1 ). 4. Skip loader according to claim 3, characterized in that the free ends of the container stops ( 3 ) have bevels ( 4 ) towards the swap body ( 2 ). 5. Skip loader according to claim 1, characterized in that the drive of the container stops ( 3 ) is hydraulic, via a chain drive, via a spindle drive, via rack and pinion gears or via a lever linkage. 6. Skip loader according to claim 5, characterized in that the front ( 3 a), side ( 3 b) and rear ( 3 c) container stops ( 3 ) can be moved or pivoted simultaneously. 7. Skip according to claim 5, characterized in that each container stop ( 3 ) is movable or pivotable in the direction of the swap body ( 2 ) and in the opposite direction, that differential hydraulic cylinders ( 5 ) are assigned to the container stops ( 3 ), and that all differential hydraulic cylinders ( 5 ) are arranged in a hydraulic system having a hydraulic tank ( 6 ), a pump ( 7 ), a control valve ( 8 ), a releasable check valve ( 9 ) and a pressure relief valve ( 10 ). 8. Skip loader according to claim 7, characterized in that a differential hydraulic cylinder ( 5 ) is assigned to each of the container stops ( 3 ) individually or to groups ( 3a , 3b , 3c ) of container stops ( 3 ).