— 5 —
position and quantity shall be determined according to requirement) so as to make air pressure
in two casings keep balanced and ensure that materials are fed to and discharged out of the
buckets smoothly. There is access door in the maintenance casing for observation and
replacement of buckets and bucket belt.
2.3.3 Elevator Foot
It consists of elevator foot housing, tail pulley, tail pulley shaft, tensioner and feeding
hopper. Elevator foot is fitted with direct and converse feeding hoppers which can meet the
different requirement of users. Tensioner is used to adjust the relative position of head pulley
and tail pulley and tension the bucket belt so as to prevent the offset and slipping. Elevator feet
are fitted with discharging flapper at both sides for removing the remaining materials and
impurities inside the machine.
2.3.4 Buckets and Bucket Belt
Bucket includes steel bucket and light high-strength plastic bucket. Users can make choice
according to the property of materials. Buckets are fixed to the bucket belt with special-purpose
bucket screws in certain spacing.
Bucket belt is the strengthened fabric rubber belt with low stretching rate, high strength,
wear proof quality, low weight and without toxicity and smell.
3 INSTALLATION, ADJUSTMENT AND COMMISSIONING
3.1 Installation Conditions
3.1.1 The foundation for elevator foot is poured with concrete and has a thickness not
lower than 300mm. It is required to be level and solid enough to bear the weight of the machine
and meet the requirement of load in the running process.
3.1.2 The foundation should have the embedded anchor bolts or steel plate with foot with
size larger than elevator foot.
3.1.3 When elevator housing need pass through the floors, floors should have the
reserved holes. Long hole is recommended for convenience of installation and adjustment. See
Figure 4 and Table 3 for sizes.
3.1.4 There should be sufficient space not smaller than 500mm between cover of elevator
head and building (or structural member).
3.1.5 The access door of the housing (central line) should be arranged in a position
about 1400mm away from the floor or ground for convenience of inspection and repair.
3.1.6 The working bench for installing the drive should be installed on the floor (or platform
of structural member) and fixed with anchor bolts.
3.1.7 It should be designed that a working platform is available at the part of head pulley
for convenience of operation and repair.
3.2 Installation
3.2.1 Position the elevator foot on the finished foundation, take the flange face of elevator
foot as datum for aligning (it is allowed to insert the leveling iron pad with thickness not larger
than 40mm) with deviation not higher than 1/1000, and fix the anchor bolts.
3.2.2 Mount the housings section by section from bottom to top according to the
requirement of technological design, and use seal for sealing.
