Hitachi Electric Wire Rope Hoist-Double Girder

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Detailed  description1. BRAKE WITH AUTOMATIC ADJUSTING DEVICE
This new Hitachi type Wire Rope Hoist is similar technology as Japanese  hitachi--the brake is with automatic adjusting device. This brake is automatically adjusted in proportion to the amount of lining abrasion to render it maintenance-free, eliminating hazardous brake adjustment high above floor level. This device also automatically adjusts to the wear of its link mechanism, thus achieving automatic adjustment of the overall brake mechanism, which is an exceptional feature.
2.AUXILIARY BRAKING DEVICE
First developed by Hitachi in the industry then put into production for our hoist, this mechanism is employed to absorb shock during operation. Should the  main brake fail to function or should the motor shaft break, this auxiliary braking device is actuated absolutely to prevent a load from dropping. In conjunction with the brake with automatic adjusting device, this auxiliary braking device constitutes a positive, double braking mechanism.
3. TOP HOISTING SPEED
To raise efficiency, hoisting speed is very important and this hoist perform very well in the speed, Further, a standard speed type is available to conform to individual customer requirements
3.DURABLE WIRE ROPE
A filler rope usable three times longer than point contact wire rope is adopted.
5. LOAD BLOCK FITTED WITH SAFETY LEVER
The load block is provided with a safety lever (to prevent rope from dislodging) in addition to a safety cover. Further, Large sheave diameter assures rope prolonged durability.
6.HOOK WITH PUNCH MARKS new IS PROVIDED
The punch marks are convenient for inspecting hook opening by only measuring the distance between them.
7. INTEGRATED PUSHBUTTON CABLE
The push button cable and protective wire are built into a single assembly so that there will be no longer a broken wire by hooking the protective wire. This design also assures ease of push button operation.
8. PLASTIC PUSHBUTTONS
The plastic push buttons are light and easy to use without the danger of electric shock.
9. MOTORIZED TROLLEY
Wear of l-beam and wheels is negligible. The hoist travels by guide rollers and flangeless wheels, remarkably reducing wear on the l-beam and wheels.
Since a brake is provided, travel by inertia is small, facilitating load positioning.
Standard headroom type and low headroom type can be used commonly.
10. CONTROL BOX
Double-limit switch when the load block has reached the upper limit, the  control circuit of the electro-magnetic switch is turned OFF, halting the operation. Should the circuit be short-circuited and the load block be moved further upward, the motor main circuit is cut OFF, stopping the hoist.
Reverse Phase-prevention device When reverse phase occurs, the motor main  circuit is cut OFF, preventing accidents due to mis-wiring.
11. MOTOR
Hoisting motor is provided with a thermal protector which senses the heat of the motor coil and functions to protect the motor from burning damages caused  by over work.
GEAR INSPECTION WINDOWVisual checks of the gear case teeth surface and lubrication conditions to some degree will improve inspection accuracy.
REDUCTION GEAR UNIT
With a grease lubricating system, grease is filled in the gear nit on shipment, eliminating the replenishment prior to use, and prolonging the operation time. The building blocks of the spur gears (helical 1st stage) facilitate the maintenance inspection.
AUXILIARY BRAKE UNITIf the braking force of the main brake is reduced, the auxiliary brake unit, a new system with minimal impact, prevents the drop of the load. Together with the automatic brakes, it composes a double braking mechanism.
MOTOR UNITEach hoist is equipped with a motor, which provides optimal starting torque for the hoist.
Employing cooling fans and large capacity ball bearings, the class B insulating motor can withstand severe operating conditions. The hoisting motor is provided with a thermal protector, which senses the heat of the motor coil and functions to protect the motor from burning damage caused by over frequent starting times.
Starting time counterThe cumulative number of starting times is indicated on this counter. Because the total of times the parts have been operated is known on this counter, it is useful for planning the maintenance and procurement of consumable parts such as brakes, electromagnetic switches and wire ropes.
Electromagnetic switch with mechanical interlock
A mechanical interlock is provided for the electromagnetic switch to prevent malfunction
Clamp type coverThe clamp type control box cover facilitates opening and closing
Brake unit
The brake is equipped with an automatic adjusting device, which automatically adjusts brake torque in proportion to the amount of lining abrasion. Conventional adjustments of the brake will not be required.
STEEL DRUM and SHEAVE
The drums (2 and 4 fall models for 2 to 5 tons, except for ultra high lift hoists) and sheaves are made of steel plate, and the grooves are processed by a special press method, this makes the life of the drums and sheaves about three times longer than existing case metal ones (compared with our products)

Specifications

Model

1LF

2LF

3LF

5LF

7.5LF

10LF

15LF

20LF

Capacity(t)

1

2

3

5

7.5

10

15

20

Lifting height(m)

6m | 12m

6m | 12m

6m | 12m

8m | 12m

8m | 12m

8m | 12m

8m | 12m

8m | 12m

Hoist

Lifting speed
(m/min)

50Hz

11

6

7.5

6.7

6.7

5

2.5

2.5

60Hz

13

7

9

8

8

6

3

3

Power(kw)

50Hz

3

3

5.5

7.5

9

11

8*2

8*2

60Hz

3

3

5.5

7.5

9

11

8*2

8*2

Motor

Current

6.44

6.44

12.8

15.6

19

22

16

18

No.of poles

4

4

4

4

4

4

4

4

Trolley

Traversing speed
(m/min)

50Hz

11 | 21

11 | 21

11 | 21

11 | 21

11 | 21

11 | 21

11 | 21

11 | 21

60Hz

13 | 25

13 | 25

13 | 25

13 | 25

13 | 25

13 | 25

13 | 25

13 | 25

Power(kw)

50Hz

0.4

0.4

0.4

0.75

0.75

0.75*2

0.75*2

0.75*2

60Hz

0.4

0.4

0.4

0.75

0.75

0.75*2

0.75*2

0.75*2

Motor

Current

1.5

1.5

1.5

2.2

2.2

2.2

2.2

2.2

No.of poles

4

4

4

4

4

4

4

4

Min.curve radius(m)

1.5

1.8

2.0

3.0

Straight

Straight

Straight

Straight

Wire Rope

No.of falls(pcs)

2

2

2

4

4

4

4

4

Composition

6×(19)-B+FC

6×(37)-B+FC

6×(37)-B+FC

6×(37)-B+FC

6×(37)+FC

6×(37)+FC

6×(39)+1

6×(37)+1

Diameter(mm)

Ф8

Ф12

Ф14

Ф12

Ф14

Ф15.5

Ф20

Ф20

Power supply

220V--600V/3Phase/50Hz or 60Hz

Control voltage

24V/36V/48V/110V


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