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Gear unit and method for controlling an internal pressure in the gear unit

A gear unit, internal pressure technology, applied in the direction of gear transmission, elements with teeth, belts/chains/gears, etc., can solve the problems of unfavorable connection to the external environment of the piston, pressure balance can no longer be ensured, and poor stability, etc. Reliable oil level measurement, easy detection, and adjustment are achieved

Active Publication Date: 2005-05-11
BAUER MASCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In this known device, a considerable improvement in terms of robustness is achieved with respect to a flexible membrane which is less stable from a mechanical point of view, although in this case there is still the aspect of the mobility of the piston risk, or the connection to the external environment of the piston is adversely affected due to dirt in the conditions at the construction site
A reliable pressure equalization can therefore no longer be ensured

Method used

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  • Gear unit and method for controlling an internal pressure in the gear unit
  • Gear unit and method for controlling an internal pressure in the gear unit
  • Gear unit and method for controlling an internal pressure in the gear unit

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Embodiment Construction

[0028] exist figure 1 A trencher 10 designed in accordance with the present invention having two cutter wheels 12 on either side of a gear guard 13 is shown in FIG. Located on the gear guard 13 is a gear unit 14 according to the invention, which transmits the torque of the hydraulic drive 15 to the cutter wheel 12 . The gear unit 14 extends to the center of the cutter wheel 12, only a part of the gear with teeth is shown. Since the structure of the trencher 10 is symmetrical, the gear structure will only be described below for the structure on the left side of the cutter wheel 12 .

[0029] In order to vary the pressure in the gearbox 16 of the gear unit 14, an active setting device 20 for pressure variation is provided. In the present embodiment, the active setting device 20 has a compensating container 22 which is connected to the interior of the gearbox 16 via a fluid line 24 . In compensation container 22 , the required pressure is generated by means of a control device...

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Abstract

The gear unit has an active setting device (20) controlled by a control device and changing pressure inside a gear housing (16). The device has a pump and / or a compensating tank which are connected to inside of the gear housing through a fluid line (24) to supply and / or discharge a fluid. A pressure sensor measures a pressure inside and / or outside the gear housing, and is in signaling contact with the control device. Independent claims are also included for the following: (A) a trench cutter comprising a gear unit (B) a method for controlling an internal pressure in a gear unit.

Description

technical field [0001] The invention relates to a gear unit, in particular for a ground engineering installation, comprising a gear box and a pressure device for varying the internal pressure present in the gear box. The invention also relates to a method for controlling the internal pressure in a gear unit. Background technique [0002] In gear units operating in water or any other environment of increased pressure, pressure equalization is required in order to regulate the oil pressure in the gear unit to the external ambient pressure. Otherwise, the pressure difference between the inside of the gearbox and the external environment will present the following dangers. In this case, due to the pressure difference, water may infiltrate from the outside to enter the gear unit. In the event of a pressure imbalance, a very great effort has to be made to seal the gear unit against fluid penetration from the outside. [0003] Such a pressure equalization system arranged on a ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F5/02E02D17/13E21B4/00F16H1/14F16H57/02
CPCE02D17/13E21B4/003
Inventor M·阿茨贝尔格
Owner BAUER MASCH GMBH