transparant gif
The Linde Group
 
transparant gif
News and Events
 
transparant gif
Merger Facts
 
transparant gif
Investor Relations
 
transparant gif
Corporate Responsibility
 
transparant gif
Corporate Heritage
 
transparant gif
Common History
 
transparant gif
Linde Group
 
transparant gif
Brief Portrait
 
transparant gif
Chronicle
 
transparant gif
Milestones
 
transparant gif
Personalities
 
transparant gif
Data and Facts
 
transparant gif
BOC Group
 
transparant gif
CH Contact
 
transparant gif
Press Area
 
transparant gif
Publications
 
transparant gif
Careers
popup arrow pop connector1 pop connector2 pop connector3

Linde AG
Leopoldstrasse 252
80807 Munich
Germany

Tel. +49.89.35757-01
Fax +49.89.35757-1075
E-mail: info@linde.com
Print
Normal text  Large text  Extra large text
Page 1  2  3  4  5  6  7
goto previous page  5 / 7  goto next page

Hydrostatics - it started with the Hydrocar


The "Hubtrac" was the first Linde forklift truck; it was built from 1959 to 1969.		 Seeking new products to offset the stagnating demand for tractors, the Güldner Motoren-Gesellschaft took over the hydrostatics operations of the Saalmann company in the mid-1950s, including all employees working in that area. In a hydrostatic drive, a rotating cylinder drum driven by a combustion motor pumps oil into a driving gear at high pressure (420 bar) by means of pistons. This driving gear in turn is rotated by means of its pistons.

The flow and, thus, the rate of rotation is controlled by a swash plate whose tilt angle determines the piston stroke. Transmission gears in the driving gear reduce the rate of rotation from 2000 to 200 rpm and transmit this to the wheels of a vehicle such as a forklift.

The change in the rotation speed is smooth. A significant advantage of the hydrostatic drive is that both acceleration and braking are effectively achieved by depressing the pedal to adjust the swash plate of the vehicle -and without any wear. Another point in favor of the hydrostatic drive is that the vehicle runs smoothly at the same speed once it has been set - no matter the resistance, such as when it goes over a threshold. Finally, the hydrostatically driven vehicle can be operated away from its energy source; it can be connected over a distance using cables and hoses.



A Güldner Hydrocar tows an air force plane. These vehicles were built
from 1958 to 1965 in Aschaffenburg.

Linde tested this hydrostatic drive in the "Hydrocar" starting in 1958, which was primarily used for internal transport. After extensive testing, the Hydrocar made up the core around which today’s Linde Material Handling Division was built. From the beginning, the first hydrostatically driven forklift had a smooth ride, simple, precise handling, low wear and high safety.

In the course of ongoing development, Linde integrated the hydrostatic drive, hydraulic pump, hydraulic motor and gearbox into one compact axle. The latest generation offers a higher power density (greater pivoting angle) and can do without the mechanical gear transmission stage since the wheels are driven directly by the "slow running" hydraulic motor.

The "intelligent" electronics provide excellent driving behavior and make optimal use of the power of the diesel engine, thus minimizing fuel consumption.

Linde hydrostatics supplies not only the forklift customers in its own plant but also a number of outside customers, such as manufacturers of construction machinery, harvesters, street-cleaning and refuse vehicles. One of its specialties is the drive for baggers: One hydraulic pump can control several "consumers" (such as a drive motor and shovel) at the same time without affecting their performance. Here too electronics developed at Linde ensure sensitive control and optimal use of the power.
The hydrostatics shop at the Aschaffenburg plant now makes some 120,000 units per year, about half of which are for external customers.

Heritage contact
Your direct contact to us.
more