DALIN DLVC Installation and operating instructions

DLVC
Installation,Operatio
and Maintenance
of VC Clutches
HENAN DALIN RUBBER AND TELECOMMUNICATIONS APPARATUS CO.,LTD
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Table of Contents
1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Clutch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Mounting Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Mounting Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Mounting Spider and Drum Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Shaft Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Axial Locking Device Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.6 Installation of Element and Drum (Narrow, Dual Narrow and Single Wide) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.7 Installation of Element and Drums (Dual Wide) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8 Air Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9 Electrical Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1 Torque, RPM and Pressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Control Component Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.2 Removal of Element Assembly and Drum (Narrow, Dual Narrow and Single Wide) . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.3 Removal of Element Assemblies and Drums (Dual Wide) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.4 Removal of Spider and Drum Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.5 Disassembly of the Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.6 Friction Lining Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.7 Assembly of the Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.0 SPARE PARTS STORAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Element Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Drums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3 Air Actuating Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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Table of Contents
6.0 ORDERING INFORMATION/ TECHNICAL ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1 Equipment Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.0 PARTS LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1 Single Narrow Element Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.2 Dual Narrow Element Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.3 Single Wide Element Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.4 Dual Wide Element Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.5 Drums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
7.6 Axial Locking Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.7 Friction Block and Rivet Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.8 Friction Shoe Assembly, Torque Bar and Release Spring Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
8.0 REVISION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
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VC GRINDING MILL CLUTCHES
Figure 1 : Component Parts for Dalin Type VC Element
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1.0 INTRODUCTION
Throughout this manual there are a number of HAZ-
ARD WARNINGS that must be read and adhered to in
order to prevent possible personal injury and/or dam-
age to equipment. Three signal words “DANGER”,
“WARNING” and “CAUTION” are used to indicate the
severity of a hazard, and are preceded by the safety
alert symbol
Denotes the most serious hazard, and is used
when serious injury or death WILL result from
misuse or failure to follow specific instruc-
tions.
Used when serious injury or death MAY result
from misuse or failure to follow specific
instructions.
Used when injury or product/equipment dam-
age may result from misuse or failure to fol-
low specific instructions.
It is the responsibility and duty of all personnel
involved in the installation, operation and maintenance
of the equipment on which this device is used to fully
understand the:
procedures by which hazards can be avoided.
1.1 Description
1.1.1 The Dalin air-actuated VC clutch is specifically
designed and manufactured for severe service
encountered in grinding mill operations, where high
starting loads and sustained slippage would normally
lower clutch efficiency and reduce operating life. Con-
stricting action and ventilated construction make high
torque capacity and rapid heat dissipation possible.
1.1.2 All Dalin VC elements are supplied with long wear-
ing, NON-ASBESTOS friction material.
1.1.3 Dalin element assemblies are available for drum
diameters from 11.5 inches through 76 inches.The
element size designation indicates the nominal drum
diameter in inches, the clutch model and the width of
the friction material. For example, size “38VC1200”
indicates the element operates on a drum having a
nominal diameter of 38 inches, is an Dalin ‘VC’
series clutch and has friction material which is 12
inches wide.
1.1.4 Where diameter space is limited, or the torque
required is greater than a single element can transmit,
all sizes of Dalin VC elements can be supplied as
dual units.
1.2 How It Works
1.2.1 Referring to Figures 1 and 2, the neoprene and cord
actuating tube is contained within a steel rim which is
drilled for mounting to the driving component. As air
pressure is applied to the air actuating tube, the tube
inflates, forcing the friction shoe assemblies uniformly
against the drum, which is attached to the driven com-
ponent. The friction shoe assemblies, which consist of
friction blocks attached to aluminum backing plates,
are guided by torque bars which are secured to side
plates. The torque flow is from the driving shaft,
through the element mounting component (typically
an iron spider), through the rim/side plate structure,
through the torque bars to the backing plates and fric-
tion material, where the torque is transmitted through
the friction couple to the components mounted on the
driven shaft (clutch drum and drum mounting compo-
nent). As actuating air is exhausted, release springs
and centrifugal force assure positive disengagement.
1.2.1.1 In some cases, the spider and element assembly may
be mounted to the driven shaft rather than the driving
shaft. This “reverse-mounted” arrangement is typically
used when retrofitting a mill drive and it is more practi-
cal to drill the pinion shaft for the air supply rather than
the motor shaft In these cases, the operation and
torque flow description is opposite to what is stated
above.
1.2.2 For applications where the clutch is mounted on a
motor shaft having plain bearings, an axial locking
device is used to hold the motor on magnetic center
during operation. Refer to the INSTALLATION
section for axial locking device adjustment.
1.2.2.1 Figure 3A illustrates another type of axial locking
device called a separation restraint. This device is
attached to the clutch rim as shown, with a bronze
wear pad which rides against the clutch drum to
restrict axial movement.
Note : There is no relative motion between the drum
and wear pad when the clutch is fully engaged.
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Figure 2
1.3 Clutch Adjustment
1.3.1 clutches are completely self-adjusting and
automatically compensate for lining and drum wear.
Lubrication is not required. The torque developed is
dependent upon rotating speed and applied air pres-
sure. By limiting the applied pressure, the element will
act as a torque limiting device and provide overload
protection.
Figure 3
1.3.2 To achieve the desired mill acceleration tim ow
control valve is installed in the clutch air supply line
and adjusted to restrict air to the clutch, while
allowing free ow away from the clutch for rapid disen-
gagement. By adjusting he rate of engage-
ment may be varied. Note th at theow control valve
does not regulate air pressure the supply pressure
must always be adequate to transmit the maximum
required torque. Refer to the INSTALLATION section
of this manual for a recommended air piping u-
ration and the OPERATION section for control
valve adjustment.
Figure 3A
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2.0 INSTALLATION
Only qualified personnel should install, adjust or
repair these units. Faulty workmanship will
result in exposure to hazardous conditions or
personal injury.
Do not inflate the element without having a
drum in place. Inflation of the element without
a drum in place will result in permanent dam-
age to the element components.
2.1 Mounting Arrangements
2.1.1 Dalin VC grinding mill clutch applications are avail-
able in single-narrow, single-wide, dual-narrow and
dual-wide mounting configurations. See Figure 4. The
clutch configuration is determined by the motor horse-
power and RPM, the allowable motor overload (per
cent rated horsepower) for mill starting, the inertia of
the mill and the charge, and the physical space avail-
able for the clutch. With the exception of single-narrow
arrangements, all clutches can be supplied with axial
locking devices.
2.2 Mounting Considerations
2.2.1 Shaft alignment must be within the tolerances indi-
cated in the Alignment section of this manual.
Operation with shaft misalignment exceeding
the limits indicated in this manual will result
in accelerated wear of the clutch components.
2.2.2 The element must be protected from contamination
from oil, grease or excessive amounts of dust.
Oil or grease contamination will result in a
reduction of developed torque. Excessive
dust contamination may result in incomplete
disengagement. Either of these conditions
will result in clutch slippage and overheating.
All rotating equipment must be guarded to
comply with applicable safety standards.
Figure 4
2.2.3 All mounting fasteners must be of the proper size and
grade, and torqued to the appropriate value. See
Table 1.
Use only the proper grade and number of
mounting fasteners. Using commercial grade
fasteners (Grade 2) in place of Grade 8 fasten-
ers (where called for) may result in failure
under load, causing personal injury or equip-
ment damage.
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TABLE 1
FASTENER ASSEMBLY TORQUE
SN = SINGLE NARROW
SW = SINGLE WIDE
DN = DUAL NARROW
DW = DUAL WIDE
L = LUBED TORQUE - FT.LB. (Nm) (30 WT. MOTOR OIL OR ANTI-SEIZE)
D = DRY TORQUE - FT.LB. (Nm)
SIZE ELEMENT TO SPIDER/SIDE
PLATE TO RIM TORQUE DRUM TO HUB TORQUE
SN 11.5VC500 3/8-16NC GR 2 D 15 (20) 1/2-13NC GR 2 D 38 (51)
SN14VC500 1/2-13NC GR 2 D 15 (20) 1/2-13NC GR 2 D 38 (51)
SN16VC600 1/2-13NC GR 2 D 38 (51) 3/4-10NC GR 2 L 93 (126)
SN20VC600 1/2-13NC GR 2 D 38 (51) 3/4-10NC GR 2 L 93 (126)
SN24VC650 5/8-11 NC GR 2 D 77 (104) 3/4-10NC GR 2 L 93 (126)
SN28VC650 5/8-11NC GR 2 D 77 (104) 3/4-10NC GR 2 L 93 (126)
SN33VC650 3/4-10 NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
SN37VC650 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
SN42VC650 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
DN 11.5VC500 3/8-16NC GR 2 D 15 (20) 1/2-13NC GR 8 D 109 (148)
DN14VC500 1/2-13NC GR 8 D 87 (118) 1/2-13NC GR 2 D 38 (51)
DN16VC600 1/2-13NC GR 2 D 38 (51) 3/4-10NC GR 8 L 245 (332)
DN20VC600 1/2-13NC GR 8 D 87 (118) 3/4-10NC GR 8 L 211 (286)
DN24VC650 5/8- 11 NC GR 2 D 77 (104) 3/4-10NV GR 2 L 93 (126)
DN28VC650 5/8- 11 NC GR 2 D 77 (104) 3/4-10NV GR 2 L 93 (126)
DN33VC650 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
DN37VC650 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
DN42VC650 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
SW 14VC1000 1/2-13NC GR 2 D 38 (51) 1/2- 13NC GR 8 L 109 (148)
SW 16VC1000 1/2-13NC GR 2 D 38 (51) 3/4-10NC GR 2 L 93 (126)
SW 20VC1000 1/2-13NC GR 2 D 38 (51) 3/4-10NC GR 2 L 93 (126)
SW24VC1000 5/8-11 NC GR 2 D 77 (104) 3/4- 10NC GR 2 L 93 (126)
SW28VC1000 5/8-11 NC GR 2 D 77 (104) 3/4-10NC GR 2 L 93 (126)
SW32VC1000 5/8-11 NC GR 2 D 77 (104) 3/4-10NC GR 2 L 93 (126)
SW38VC1200 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
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SIZE ELEMENT TO SPIDER/SIDE
PLATE TO RIM TORQUE DRUM TO HUB TORQUE
SW42VC1200 3/4-10NC GR 2 L 93 (126) 3/4-10NC GR 2 L 93 (126)
SW46VC1200 7/8-9NC GR 2 L 109 (148) 1-8NC GR 2 L 163 (221)
SW52VC1200 7/8-9NC GR 2 L 109 (148) 1-8NC GR 2 L 163 (221)
SW51VC1600 7/8-9NC GR 2 L 109 (148) 1-8NC GR 2 L 163 (221)
SW60VC1600 1-8NC GR 2 L 163 (221) 1 1/2-6NC GR 2 L 566 (767)
SW66VC1600 1 1/4-7NC GR 2 L 325 (441) 1 1/2-6NC GR 2 L 566 (767)
DW 16VC1000 1/2-13NC GR 8 D 87 (118) 3/4-10NC GR 8 L 245 (332)
DW20VC1000 1/2-13NC GR 8 D 87 (118) 3/4- 10NC GR 8 L 245 (332)
DW24VC1000 5/8- 11 NC GR 8 D 174 (236) 3/4- 10NC GR 8 L 245 (332)
DW28VC1000 5/8- 11 NC GR 8 D 174 (236) 3/4- 10NC GR 8 L 245 (332)
DW32VC1000 5/8- 11NC GR 8 D 174 (236) 3/4- 10NC GR 8 L 245 (332)
DW38VC1200 3/4-10NC GR 8 L 245 (332) 3/4- 10NC GR 8 L 245 (332)
DW42VC1200 3/4-10NC GR 8 L 245 (332) 3/4- 10NC GR 8 L 245 (332)
DW46VC1200 7/8-9NC GR 2 L 109 (148) 1-8NC GR 8 L 510 (692)
DW52VC1200 7/8-9NC GR 2 L 109 (148) 1-8NC GR 8 L 510 (692)
DW51VC1600 7/8-9NC GR 2 L 163 (221) 1-8NC GR 8 L 510 (692)
DW60VC1600 1-8NC GR 2 L 190 (258) 1 1/2-6NC GR 2 L 650 (881)
DW66VC1600 1 1/4-7NC GR 2 L 380 (515) 1 1/2-6NC GR 2 L 650 (881)
DW76VC1600 1 1/4-7NC GR 2 L 380 (515) 1 1/2-6NC GR 2 L 650 (881)
DW76VC2000 1 1/4-7NC GR 2 L 380 (515) 1 1/2-6NC GR 2 L 650 (881)
HEX SIZES (in.)
SIZE BOLT NUT SIZE BOLT NUT SIZE BOLT NUT
3/8NC 9/16 9/16 3/4NC 1-1/8 1-1/16 1-1/4NC 1-7/8 1-13/16
1/2NC 3/4 3/4 7/8NC 1-5/16 1-1/4 1-1/2NC 2-1/4 2-3/16
5/8NC 15/16 15/16 1NC 1-1/2 1-7/16
TABLE 1
FASTENER ASSEMBLY TORQUE
SN = SINGLE NARROW
SW = SINGLE WIDE
DN = DUAL NARROW
DW = DUAL WIDE
L = LUBED TORQUE - FT.LB. (Nm) (30 WT. MOTOR OIL OR ANTI-SEIZE)
D = DRY TORQUE - FT.LB. (Nm)
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2.3 Mounting Spider and Drum Hub
2.3.1 The spider and drum hub are bored for a press fit onto
their respective shafts. The interference is approxi-
mately 0.0005 inch per inch (0.0005 mm/mm) of shaft
diameter.
2.3.2 Ensure the shaft is dean and free of nicks or burrs and
check the shaft and bore diameters for proper fit. Tap
the key into the keyway, making sure it bottoms, and
apply a light coat of anti-seizing compound to the shaft
and key.
2.3.3 Heat the drum hub or spider uniformly to 250°F
(121°C) to expand the bore.
It is recommended the drum hub or spider be
heated in oil or an oven; however, torches
may be used. Use several with “rosebud”
(broad-flame) tips and keep them moving to
avoid "hot spots". Check bore temperature
frequently to avoid overheating.
2.3.4 Slide the heated drum hub or spider onto the shaft.
Hold in position and allow to cool.
2.4 Shaft Alignment
Parallel Alignment Tolerance
(Offset):
Not to exceed 0.010 inch (0.254 mm) Total Indica-
tor Reading (0.005 inch (0.127mm) maximum off-
set).
Figure 5
TABLE 2
“X” DIMENSIONS (FIG. 5)
SIZE “X” IN. (mm) SIZE “X” IN. (mm) SIZE “X” IN. (mm) SIZE “X” IN. (mm)
SN11.5VC500 6.750 (171.5) DN 11.5VC500 13.375 (339.7) SW14VC1000 11.875 (301.6)
SN14VC500 6.812 (173.0) DN14VC500 13.438 (341.3) SW16VC1000 11.875 (301.6) DW16VC1000 12.750 (323.9)
SN16VC600 8.062 (204.8) DN16VC600 15.938 (404.8) SW20VC1000 11.875 (301.6) DW20VC1000 12.750 (323.9)
SN20VC600 8.062 (204.8) DN20VC600 15.938 (404.8) SW24VC1000 11.875 (301.6) DW24VC1000 12.750 (323.9)
SN24VC650 8.562 (217.5) DN24VC650 16.688 (423.9) SW28VC1000 11.875 (301.6) DW28VC1000 12.750 (323.9)
SN28VC650 8.562 (217.5) DN28VC650 16.688 (423.9) SW32VC1000 11.938 (303.2) DW32VC1000 12.812 (325.4)
SN33VC650 8.562 (217.5) DN33VC650 16.750 (425.5) SW38VC1200 14.125 (356.7) DW38VC1200 15.000 (381.0)
SN37VC650 8.562 (217.5) DN37VC650 16.750 (425.5) SW42VC1200 14.125 (358.7) DW42VC1200 15.125 (384.2)
SN42VC650 8.562 (217.5) DN42VC650 16.750 (425.5) SW46VC1200 14.125 (358.7) DW46VC1200 15.250 (387.4)
SW52VC1200 14.625 (371.5) DW52VC1200 15.750 (400.0)
SW51VC1600 18.875 (479.4) DW51VC1600 20.000 (508.0)
SW60VC1600 18.750 (476.31) DW60VC1600 20.375 (517.5)
SW66VC1600 20.500 (520.7) DW66VC1600 22.000 (558.8)
SW76VC1600 Contact Factory DW76VC1600 20.375 (517.5)
SW76VC2000 Contact Factory DW76VC2000 24.374 (619.1)
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