Electro Hydraulic Thrustor
(Elecon Group of Companies)
ELECON PERIPHERALS LTD.
Post Box # 43, Anand-Sojitra Road,
Vallabh Vidyanagar - 388 120.
Gujarat, India.
Phones : +91 (2692) 227960, 227971, 227972
Fax : +91 (2692) 236508
E-mail : [email protected]
ELECON PERIPHERALS LTD.
THRUSTOR DURING POWER STROKETHRUSTOR DURING MOTOR IS SWITCHED OFF
Introduction:
Working Principle:
Application:
Other Applications:
The “Electro Hydraulic thrustor” is the device which converts input Electrical signal in to linear motion. Hence it's also called “Linear Actuator”. This system mainly consists of 3 Phase Electric motor, motor operated impellor, Oil (transformer oil) as a working fluid and a Piston. Hence this system can be divided in mainly two parts,1) Electric Motor and 2) closed loop hydraulic system. By simply providing electric power, smooth constant force in linear direction can be produced. This linear and jerk free thrust can be used to operate several mechanisms i.e. Thrustor operated brakes, door shutters, damping systems etc.
The impeller of the centrifugal pump driven by the motor generates a hydraulic pressure in the space under the piston. A hydraulic force is generated by the piston. Amount of force is dependent on Piston area and the pressure. Hence electrical power is converted in to the linier motion (of piston). Pressure is relived when motor is switched off (i.e. when there is the power failure). Piston comes at it's lower most position under the impression of counter weight or springs. (of mechanism on which Thrustor is mounted.)
One of the most common applications is the Thrustor operated Brake. In this application Thrustor is used to operate a Mechanical brake. Electrical power is used to rotate the impeller which in turn generates the hydraulic pressure by working on Oil hence to lift the piston. This smooth and jerk free thrust is either controlled by a appropriate stiff spring or counter weights of mech. brake. Brake shoes are operated by brake mechanism, which is operated by thrustor. Here Thrustor operated Brake acts as an important safety device.
Lever actuation, Machine tools applications, Press machines, conveying equipments, lifting equipments etc.
Constant and Jerk free thrust
Less heat generation hence long life for motor
Totally enclosed hydraulic system
Controllable power and return stroke
Meets IP-55 degree of protection
Tested at E.R.D.A., Baroda
Easy to install & maintain
Variable mounting positiono(Up to 10 inclination from vertical is possible)
Maintenance free
Long life
Low power consumption
Suitable for 415V, 3 phase, 50 Hz Connections
Key Features :
Refer to the below cross section drawing describing major parts of thrustor.
Electro Hydraulic ThrustorElectro Hydraulic Thrustor
01
02
03
04
05
06
07
08
09
10
11
12
13
LIFTING FORCE (Kgs.)
STROKE (mm)
MOTOR TYPE
MOTOR RATED POWER (kW)
SUPPLY VOLTAGE (V)
WINDING CLASS
OIL GRADE
OIL CAPACITY (Ltrs.)
NET WEIGHT (Kgs.)
GROSS WEIGHT (Kgs.)
UPPER LUGS THK.
BOTTOM LUGS THK.
LUGS HOLE DIA.
Sr. No. TECHNICAL SPECIFICATION
114
753ph
Induction Motor
0.375
415
FTransformer Oil
2(viscocity : 17MM /S)
4.5
45
47
22
25
30
EHT075114
01
02
03
04
05
06
07
08
09
10
11
12
13
LIFTING FORCE (Kgs.)
STROKE (mm)
MOTOR TYPE
MOTOR RATED POWER (kW)
SUPPLY VOLTAGE (V)
WINDING CLASS
OIL GRADE
OIL CAPACITY (Ltrs.)
NET WEIGHT (Kgs.)
GROSS WEIGHT (Kgs.)
UPPER LUGS THK.
BOTTOM LUGS THK.
LUGS HOLE DIA.
Sr. No. TECHNICAL SPECIFICATION
68
753ph
Induction Motor
0.375
415
FTransformer Oil
2(viscocity : 17MM /S)
4.5
45
47
22
25
30
EHT075068
01
02
03
04
05
06
07
08
09
10
11
12
13
LIFTING FORCE (Kgs.)
STROKE (mm)
MOTOR TYPE
MOTOR RATED POWER (kW)
SUPPLY VOLTAGE (V)
WINDING CLASS
OIL GRADE
OIL CAPACITY (Ltrs.)
NET WEIGHT (Kgs.)
GROSS WEIGHT (Kgs.)
LUGS HOLE DIA.
UPPER LUGS THK.
BOTTOM LUGS THK.
Sr. No. TECHNICAL SPECIFICATION
225
1273ph
Induction Motor
0.600
415
FTransformer Oil
2(viscocity : 17MM /S)
7
63
68
26
32
40
EHT127225
01
02
03
04
05
06
07
08
09
10
11
12
13
LIFTING FORCE (Kgs.)
STROKE (mm)
MOTOR TYPE
MOTOR RATED POWER (kW)
SUPPLY VOLTAGE (V)
WINDING CLASS
OIL GRADE
OIL CAPACITY (Ltrs.)
NET WEIGHT (Kgs.)
GROSS WEIGHT (Kgs.)
UPPER LUGS THK.
BOTTOM LUGS THK.
LUGS HOLE DIA.
Sr. No. TECHNICAL SPECIFICATION
46
503ph
Induction Motor
0.250
415
FTransformer Oil
2(viscocity : 17MM /S)
2.5
27
28.5
20
20
27
EHT050046
01
02
03
04
05
06
07
08
09
10
11
12
13
LIFTING FORCE (Kgs.)
STROKE (mm)
MOTOR TYPE
MOTOR RATED POWER (kW)
SUPPLY VOLTAGE (V)
WINDING CLASS
OIL GRADE
OIL CAPACITY (Ltrs.)
NET WEIGHT (Kgs.)
GROSS WEIGHT (Kgs.)
UPPER LUGS THK.
BOTTOM LUGS THK.
LUGS HOLE DIA.
Sr. No. TECHNICAL SPECIFICATION
34
503ph
Induction Motor
0.250
415
FTransformer Oil
2(viscocity : 17MM /S)
2.5
27
28.5
20
20
27
EHT050034
01
02
03
04
05
06
07
08
09
10
11
12
13
LIFTING FORCE (Kgs.)
STROKE (mm)
MOTOR TYPE
MOTOR RATED POWER (kW)
SUPPLY VOLTAGE (V)
WINDING CLASS
OIL GRADE
OIL CAPACITY (Ltrs.)
NET WEIGHT (Kgs.)
GROSS WEIGHT (Kgs.)
UPPER LUGS THK.
BOTTOM LUGS THK.
LUGS HOLE DIA.
Sr. No. TECHNICAL SPECIFICATION
18
503ph
Induction Motor
0.150
415
FTransformer Oil
2(viscocity : 17MM /S)
2
16
17.5
20
18
18
EHT050018
Note : For non-standard product, contact us with technical details.
INSTALLATION AND MAINTENANCE MANUAL
01) MAINTENANCE:
02) ELECTRICALS:
03) OIL FILLING INSTRUCTIONS:
04) MOUNTING:
05) INSTALLATION:
SPARES AND IMPORTANT PARTS OF THRUSTOR
MOTOR:
BEARINGS:
OILSEAL:
IMPELLOR:
TERMINAL BOX:
Note:-
“EPL” make Electro Hydraulic Thrustors are almost maintenance free,
however for smooth and quick thrust, guide rods must be properly cleaned time to time.
While connecting thrustor to Mechanical brake, Pin joints must be lubricated enough for
free movement. Further if thrustor is installed under open atmosphere, proper covering of
thrustor is necessary to protect it from rain, dust and humidity.
Thrustor motors are totally enclosed but it's necessary to cover motor
portion if thrustor is installed in open atmosphere, to avoid damage from rain water. Motor
winding is of “F” class. Motor is designed for operating under 415 volts, 3 Phase and 50 Hz
Connections. For free and flexible movements, connecting wire must be at least 5 meters
in length. As thrustor function is independent of motor/impellor rotation direction, wires
can be connected in any sequence. How ever thrustor must not be turned ON without
filling oil of proper proportion for safety of motor.
Fill the thrustor with good quality transformer grade oil. Fill the
oil through upper oil filling plug until it over flows. For removing air (if any trapped ) , run the
upward and downward strokes manually for several times and if oil level decreases, fill the
oil until oil overflows. Oil once filled will last for long time, however when it's required oil can
be drained through bottom drain plug. While filling oil, thrustor must be held vertically.
Improper amount of oil in thrustor will cause to insufficient pressure head, hence shorter
stroke length. Ensure proper tightening of filling and draining plug after filling oil.
Thrustor are mounted vertically on Mechanical brake, however maximum
tilting of 10 degree is allowed while mounting. Thrustors are mounted on brake by means of
pivot pin. For proper functioning, pin must be lubricated with oil and rust free before using.
Installing procedure of the thrustor in various systems may vary case to
case, however for actuation of the thrustor only above mentioned electrical connection
is needed.
Motor of “EPL” make thrustor is totally enclosed and built with superior material under
strict stage inspections. “F” class Insulation is used, hence motor can run even in higher
ambient temperature.
Grease filled bearing is used in driving motor and splash lubricated bearing is used
in hydraulic system.
Oils seals are provided at the thrust rod. Time to time dust removal is recommended
from thrust rods to avoid wear of oil seal. A separate cover will work best in case of dusty
atmosphere.
An aluminum cast centrifugal impellor spins in oil and develops pressure head to lift
the piston, hence thrust of proper amount is generated.
All thrustors are provided with terminal box. Earthing stud is provided in the
terminal box.
However “EPL” make thrustors meet IP-55 standard, for long and maintenance free life
it's advisable to follow abovementioned instructions.
Aka
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PRODUCT PROFILE
(Elecon Group of Companies)
ELECON PERIPHERALS LTD.
Post Box # 43, Anand-Sojitra Road, Vallabh Vidyanagar - 388 120, Gujarat, India.
Phones: +91 (2692) 227971, 227972
Fax : +91 (2692) 236508, E-mail : [email protected]
227960, 227904, 227941,
