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Multiquip HTN-27K-TCSL operation manual Drive System Theory of Operation

Models: HTN-27K-TCSL

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Drive System Theory of Operation

The HTN-SERIES Ride-On Power Trowel is equipped with a "Torque Converter" which supplies torque to both the left and right gearboxes.

The function of the torque converter is to automatically deliver the correct amount of torque required by the trowel under all load conditions.This enables the trowel to deliver the necessary torque for float pan applications and the high rotor speeds required for burnishing concrete.

The torque converter used in the HTN SERIES Ride-On Power Trowel is a variable pitch pulley type (Figure 22) connected by a drive belt.

Fig. 22 Torque Converter/Variable Pitch Pulley

Drive Pulley

The "Drive Pulley" uses centrifugal force (Figures 23 and 24) to create a belt squeeze force transmitted at the pulley faces. This condition functions as an automatic clutch and transmission.

 

 

TRI

 

 

 

N

FU

G

 

E

 

 

 

C

 

 

 

A

L

 

 

 

 

 

F

 

 

 

 

 

O

 

 

 

 

 

R

 

 

 

 

 

C

 

 

 

 

 

E

FIXED

FACE

VARIABLE

FACE

 

SQUEEZE

 

BELT

FORCE

DRIVE PULLEY

 

 

(TORQUE CONVERTER)

HTN-SERIES— MAINTENANCE

Centrifugal force pushes the roller arms against the ramp plate, forcing the moveable face toward fixed face squeezing the belt. (see Figure 24 below)

CENTRIFUGAL FORCE

DISTANCE

DRIVE

LOW OUTPUT

 

SPEED

MOVEABLE FACE

PULLEY

 

MOVEABLE

 

 

 

 

 

IS CONTROLLED

FACE

 

 

 

 

 

 

BY A SPRING

TRAVELS

 

 

 

 

 

 

AND BELT TENSION

 

LOW ENGINE RPM

 

 

 

 

DRIVEN PULLEY

MOVABLE FACE IS

 

HIGH OUTPUT

CONTROLLED BY

 

DRIVE

 

SPEED

ROLLER WEIGHT ARMS

 

PULLEY

 

 

AND SPRINGS

HIGH ENGINE RPM

DRIVEN PULLEY

Fig. 24. Pulley Interaction

The"VariablePitchPulleys"haveonefixedface,andonemoveable face.The drive pulley ( torque converter, Figure 25) moveable face is controlled by roller weight arms and springs, which change position according to engine speed.The driven pulley moveable face is controlled by a spring and belt tension.

DRIVE PULLEY

RAMP

PLATE

BUSHING

SPRING

ROLLER ARM

WEIGHT

Fig. 25. Variable Pitch Pulley

A

B

C

DRIVE

 

 

 

PULLEY

DRIVEN

PULLEY

NEUTRAL LOW SPEED HIGH SPEED

Figure 23. Torque Converter (Centrifugal Force)

Figure 26. Pulley Conditions

 

 

HTN-SERIES • RIDE-ON POWER TROWEL — OPERATION MANUAL — REV. #0 (06/06/07) — PAGE 32

 

 

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Multiquip HTN-27K-TCSL Drive System Theory of Operation, Torque Converter/Variable Pitch Pulley Drive Pulley
Page 31 Page 33

HTN-27K-TCSL specifications

The Multiquip HTN-27K-TCSL is a cutting-edge piece of technology designed for professionals in the construction and industrial sectors. This portable hydraulic power unit is known for its robust performance and versatility, making it an ideal choice for a wide range of applications.

One of the standout features of the HTN-27K-TCSL is its powerful engine. Equipped with a reliable 27-horsepower Kohler engine, this unit ensures maximum efficiency and performance, allowing operators to complete tasks quickly and effectively. The engine is designed to be both fuel-efficient and environmentally friendly, adhering to emission regulations without sacrificing power.

The HTN-27K-TCSL boasts a unique hydraulic system that delivers high-pressure flow rates, making it suitable for operating multiple tools simultaneously. With a maximum hydraulic pressure of 3,000 PSI, this power unit can effortlessly handle demanding tasks such as concrete breaking, water jetting, and other heavy-duty applications. The ability to provide consistent hydraulic power allows for enhanced productivity on job sites.

In terms of versatility, the Multiquip HTN-27K-TCSL is equipped with a wide range of output options. Its hydraulic outlet configurations can support various attachments, enabling users to adapt the unit for diverse tasks. This flexibility makes it an invaluable tool for contractors, landscapers, and utility companies.

Another notable characteristic of the HTN-27K-TCSL is its rugged construction. Built to withstand the rigors of tough job sites, this hydraulic power unit features a durable frame and protective covers that shield the engine and components from dust and debris. The compact design ensures easy transportation and maneuverability, making it a practical choice for both indoor and outdoor use.

Additionally, the HTN-27K-TCSL is designed with operator safety in mind. It features a user-friendly interface, with clearly labeled controls for easy operation. Safety features such as emergency shut-off switches and protective guards further enhance its usability, ensuring that operators can work confidently.

In summary, the Multiquip HTN-27K-TCSL is a powerful, versatile, and robust hydraulic power unit designed to meet the demanding needs of various industries. With its exceptional performance, durable construction, and focus on safety, it continues to be a trusted choice among professionals seeking reliable hydraulic solutions.