BJC Hydraulic Control System for Snowplow by TlCG8IO4

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									Jefferson County Airport




       SPECIFICATIONS
            FOR
 HYDRAULIC CONTROL SYSTEM
      FOR CONTROL OF
         SNOWPLOW

 AND OPTIONAL ITEMS SUCH AS

          DUMP BED
       V-BOX SANDER
      TAILGATE SANDER
GENERAL

It is the purpose of this specifications to describe a basic hydraulic control system
that will have the capabilities of controlling all hydraulic functions that are incurred
by the operation of this snow plow truck. Also there is the optional joystick control
system specification.

MAIN HYDRAULIC PUMP

The main hydraulic pump shall be an axial piston, pressure and flow compensated,
load-sensing type. The pump shall be cast iron construction and be able to
maintain enough flow so there will not be a noticeable change in functions of the
complete hydraulic system. Mounting shall be SAE type “C” 2 bolt mount and be
driven by a minimum of a 1¼” inch round keyed shaft. The pump shall have a
scalloped barrel design to provide for inlet supercharging. The inlet of the pump
shall be supplied with a 2 inch suction hose and a non-restrictive full flow elbow
fitting. A 1” high-pressure full flow ball valve shall be installed on the pressure
outlet port of the pump for emergency shut down. The ball valve shall be secured
in the open position for normal operation. Pump controls shall be cartridge type to
allow for field service and easy changing. Pump shall be rated for 3000 PSI and
3000 RPM continuous duty. Pump shall be pre-approved before installation.

DRIVELINE FOR PUMP

Pump shall be driven by a hot shift PTO with over speed control and Spicer 1310
series tubular driveline assembly. Pump shall be mounted with driveline in phase
and will be mounted in the space behind the cab (or as close as possible). Driveline
shall be pre-approved before installation.

ROCKER SWITCH CONTROL PANEL


A backlit rocker switch console that includes ten (10) lighted rocker switches with
individual circuit breakers will control the valve and lighting functions. Backlit
nomenclature will show switch functions. Valve and auxiliary wire harness will also
be included. Control panel to be Force America ASC100 or prior approved equal.
RESERVOIR AND FILTERS


A 30-gallon, minimum, baffled hydraulic oil tank is to be mounted off the chassis
frame rail. Tank is to have filler breather with 4 inch screened basket, chained cap,
magnetic drain plug, oil level/temperature gauge and 100 mesh suction screen with
3-lb. bypass. Tank shall have 12V-DC level/temp switch installed and wired to a
warning light with audible alarm in the cab. A full flow ball valve shall be installed
on the suction line and be secured in the open position for normal operation. A 50
gpm 10 micron return line spin-on filter with indicator gauge shall be installed at the
tank return. Ports shall be 1 1/4” NPTF. Return filter shall be Force America model
# SF510-120-25-10CSR-PG or prior approved equal. A ball valve shall be installed
between the return line and the reservoir to allow for changing of the filter element.
A high-pressure filter shall also be installed in the main pressure line between the
pump and the valve assembly. Reservoir tank shall be mounted so that the pump
will be within specification of the total amount of suction lift. (being that the pump
will be mounted behind cab and higher than reservoir tank).


MCV-ISO MAIN CONTROL VALVE


The main hydraulic control valve shall be mobile manifold load sensing type. Load
sensing hydraulic valve shall be stacked manifold design to allow for additional
sections to be added if required. Valve sections can be changed or taken out for
service without disconnecting hoses and fittings. Design shall have inlet manifold
with sub-base mounted 40 gpm 4 way section stacked to left of inlet, and two 21
gpm sections stacked to the right of the inlet manifold to operate plow lift/lower,
plow swing. Sections for the auger/direct liquid and spinner sections and shall be
one 0-15 gpm 2 way for conveyor and two 0-5 gpm 2 way for spinner and hydraulic
prewet. (or as needed per manufacturer design) Each control valve section shall
have electrical proportional control and individual pressure compensation to allow
for independent simultaneous operation. Proportional control shall be achieved
with pulse width modulation (PWM) signals. All valve sections shall have
continuous rated heavy duty coils and have Hirshman type connectors. All valve
sections are to be operate by 12 volts D.C. and have a maximum draw of 1400
milliamps. All sections shall have push pin manual overrides on the coils; dump
body/plow functions shall also have rack and pinion type overrides. Hydraulic valve
shall be mounted in a weather tight enclosure with latches to hold down the lid.
Main hydraulic valve shall be Parker MCV-ISO series with Force America stackable
manifold and enclosure or prior approved equal.
SPREADER CONTROL SYSTEM

The electronic spreader control system shall be designed for precise, closed loop
control of applying material to runways and taxiways. The spreader shall have a
dual line alphanumeric fluorescent text display that will show the operator the rate in
which material is spread and program information. The system shall have a battery
back up to protect programmed information. The spreader must be protected from
an over voltage and a reverse polarity possibility. The spreader shall have self-
diagnostics functions and a procedure for corrections. The system shall be pass-
word protected to protect programmed information. There shall be a way to
program the blast system in three (3) different ways. Momentary, timed or by the
distance traveled. The unit shall be capable of monitoring of up to three (3) different
alternate materials spread, and have up to ten (10) programmable spread rates.
The system shall be capable of monitoring and controlling liquid materials and solid
materials at the same time. The program shall be capable of switching
automatically into an open loop mode in the case that a feedback failure occurs.
Closed loop auger feedback signal shall be a twenty (20) pulse greaseable sensor
or a built in auger sensor with a 7X or 18x multiplier to provide high performance
operation for granular material. Programming shall provide for a two (2) speed axle
or transfer case input as required. The spreader controls will be mounted in with the
ASC100 switch panel as to be easily operated from the driver’s reach. Unit shall
have detented control dials for spreader controls as well as operation parameters
and calibrations settings. The software shall control Adjustable lighting of backlit
control panel and remote display of text. The unit must be capable of displaying
logged spread run information for immediate reference and have bi-directional
RS232 for printer or data collection. The unit must provide real time and date. Must
also provide for programmable PWM out-put frequency. The unit must also provide
stationary unload, auger reverse, and a programmable jump start to provide
immediate material flow at start up. Unit must also have the option of closed loop
spinner to automatically control material output with spread width control, giving
true pounds per lane mile spread. Other options for road temperature and
information management systems will be available. The control system shall be
Force America SSC5100 system or pre-approved equal.
Optional Commandall Control Center


The main control console shall control all hydraulic functions, including the closed
loop salt/sand, granular prewet, and multi-lane direct liquid. The control center shall
be an ergonomically designed armrest type with all control functions at the driver’s
fingertips. There shall be a joystick control that includes a fully proportional hoist
control with center interlock and dual axis thumb controls for plow and wing
functions. The joystick will also include two push button switches for spreader
standby and blast. Control center shall have separate, easy to service cable
connections for feedback sensors, speedometer signal, main power and valve
output. There shall also be 8 switches available for auxiliary lighting or other
electrical functions. Individual reset circuit breakers for switch functions will be
externally available on the console housing. The electronic spreader control shall
be designed for precise, closed loop control of material application. The spreader
system dual line alphanumeric fluorescent display shall be remote mountable with
LED indicators for power, body up, filter by pass, low oil and spreader on. Audible
alarms will be included for low and hot oil. The electronic spreader control shall
have a battery back up to protect memory functions. Unit must be protected from
reverse polarity as well as be over voltage protected. The spreader control to be
capable of self-diagnostics for system errors and correction procedures. The
control unit must have password protection to prevent unauthorized access to set
up the calibration parameters. A security key for driver/supervisor will also be
supplied. Programming shall allow for blast function to be set on of three ways;
momentary, timed or by distance traveled. Unit must be capable of spreading up to
three alternate materials with 10 programmable spread rates. The control unit
should be able to control and monitor liquid application systems in addition to
normal material application. Programming shall provide for automatic switching to
open loop mode in event of conveyor feedback failure. Closed loop auger
feedback signal shall be a 20 pulse greasable sensor or built to sensor an auger
motor with a 7X or 18X multiplier to provide high performance operation for the
granular material. Programming shall also provide for two-speed axle or transfer
case input as required. The spreader controls shall be an armrest mounted for
fingertip use and shall include detented control dials for spreader and liquid rate
controls as well as operation parameters and calibration settings. Adjustable
lighting of backlit control panel and remote display of text shall be software
controlled. Text display shall inform the operator of spread rate information and
calibration parameters. The unit must be capable of displaying logged spread run
information for immediate reference and have bi-directional RS232 for printer or
data collection. The unit will provide real time and date and must provide for
programmable PWM out-put frequency. In addition the unit must provide stationary
unload, auger reverse mode and a programmable jump-start to provide immediate
material flow at start up. The unit will also have optional closed loop spinner to
automatically control material output with spread width control, giving a true pound
per line mile spread. Other options for road temperature and information
management systems will be available. The control center with electronic closed
loop material control shall be Force America Commandall 5100 system or prior
approved equal.


WARRANTY

There shall be in writing the manufactures base warranty with a minimum of One
(1) year on every component that makes up the entire unit. Also needed are the
prices for optional extended warranties. (Must be directly from the manufacturer)




NUMBER OF EXCEPTIONS TAKEN _______________

BASE PRICE OF HYDRAULIC CONTROLL SYSTEM                   _______________

PRICE OF THE OPTIONAL 5100 COMMANDALL_______________

								
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