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

An engineering device and internal pressure technology, applied in the direction of gear transmission, components with teeth, infrastructure engineering, etc., can solve the problems of unfavorable connection to the external environment of the piston, can no longer ensure pressure balance, poor stability, etc., to achieve reliability Oil level measurement, easy to detect, and achieve the effect of adjustment

Active Publication Date: 2008-02-27
BAUER MASCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
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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

Examples

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Embodiment Construction

[0028] In FIG. 1 there is shown a trencher 10 designed according to the invention having two cutter wheels 12 on either side of a gear guard 13 . 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 (not shown here) an...

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Abstract

The invention relates to a gear unit, in particular for foundation engineering devices, comprising a gear housing and a pressure device for changing an internal pressure present in the gear housing. For a precise pressure balance to the environmental pressure it is intended that an active setting device is arranged which can be controlled by a control device in order to change the internal pressure. The invention further relates to a method for pressure balance related thereto.

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 Patents(China)
IPC IPC(8): E02F5/08E02F5/02E02D17/13E21B4/00F16H1/14F16H57/02
CPCE02D17/13E21B4/003
Inventor M·阿茨贝尔格
Owner BAUER MASCH GMBH
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