STAS STAS M, Инструкция по эксплуатации

Страница: 33 / 66

STAS nv – Flanders Fieldweg 45 – 8790 WAREGEM (BELGIUM) Instructions for use, tipper trailer – Version 3.1
Tel. +32 (56) / 60 01 91 – Fax +32 (56) / 60 01 95 – e-mail : sales@stas.be web – - http://www.stas.be Page 30
Closing the door is done in reverse order. Do not forget to tighten the clamps in order to guarantee the
watertightness of the door.
Operation as top hinged door
Prior to opening the door, ensure:
 the load allows you to do so safely,
 the load cannot suddenly fall out,
 there is no one in the danger zones (between tipping body and chassis,
just behind the vehicle, etc.), and that there are no persons or animals
within tipping range.
Unlock the door before tipping, never during tipping.
If the unlocking of the door is done by a supervisor, he must be familiar with
the working of the trailer. He must comply with the safety instructions at all
times.
Opening the door as a top hinged door.
 Loosen the clamps on the door.
 With a universal door make sure the operating hook of the screw key is upwards, i.e. the screw
key is in the closed position (see Figure 6.5.2.a.).
 Remove the hinge pin from the bottom hinge.
 Open the closing hooks (both horizontal and vertical). First ensure the mechanical locking is
unlocked, then open the closing hooks. The swing-away closing hooks are opened by a hydraulic
hand pump. Customary pneumatic closing hooks are opened by a valve that at the front and/or at
the back (also see § 6.2) or by a blocking valve (see Figure 6.2.2.d.).
Closing the door as a top hinged door
 When the tipping body is resting on the chassis the closing hooks close (both the horizontal and
vertical). With trailers with a blocking valve the closing hooks close automatically.
 Check that the closing hooks look the door body and put the mechanical locking in the locked
position.
 Place the locking pin in the bottom hinge again.
 Tighten the clamps to ensure with the watertightness of the door
For operation of the optional grain hatches see § 8.2.
6.5 . H yd raul ic t op hin ged door
6.5.1 Description
Figure 6.5.1.a. – Tipper with hydraulic top hinged door
A hydraulic door can only be used as a single-part top hinged door.
The opening of the hydraulic top hinged door is done by two hydraulic cylinders (one on each side).
The hydraulic flow chart of a tipper with hydraulic top hinged door is clarified in Figure 6.6.1.b.
The hose with hydraulic oil (from the lorry) is connected to the ¾” (or other) coupling. This is connected
to a collector (2). The collector (2) has a hose connection with the tipping cylinder (1). The tipping
cylinder (1) can be switched off with a ball valve (3). From the collector (2) there is also a connection to
the two hydraulic cylinders for the top hinged door (9). These have hose breakage valves (10) to keep
the (half) opened hydraulic top hinged door in position should the connections break. A flow controller
(4) and a ball valve (5) are fitted between the collector and hydraulic top hinged door cylinders. This ball
valve (5) can also be provided as an electrically operated (from the lorry) valve. The flow controller (4)
restricts the quantity of oil the to the top hinged door hydraulic cylinders. The ball valve (5) enables the
switching off of the top hinged door.
The hydraulic top hinged door is provided in combination with a blocking valve (6) for the operation of
the locking hooks. When the tipping body tips a little upwards the blocking valve sends air pressure
from the reservoir (7) to the pneumatic cylinders (8). These pneumatic cylinders (8) open the locking
hooks. With the lowering of the tipping body the blocking valve shuts off the air pressure from the
reservoir and the pneumatic cylinders (8) are relieved. A spring closes the locking hooks. The working
of the blocking valve can be switched off using an operating valve (11).