公开(公告)号：US09869359B2

公开(公告)日：2018-01-16

申请号：US14473124

申请日：2014-08-29

Applicant: Caterpillar Inc.

Inventor： Carl McIlheran ,  Andrew J. Kleitsch ,  John C. Vacca ,  Daniel Mather ,  Michael D. Hudson ,  Derek W. Holmes

IPC: F16D65/78 ,  B60T5/00 ,  F15B21/04

CPC classification number: F16D65/78 ,  B60T5/00 ,  F15B21/042 ,  F15B2211/50518 ,  F15B2211/5156 ,  F15B2211/611 ,  F15B2211/62 ,  F16D2065/783

Abstract: A relief valve in a hydraulic system in a machine selectively sends pressurized oil to both a brake cooling apparatus and a cylinder used to hoist a load. A relief valve lowers pressure spikes in a brake cooling line by dumping fluid in a brake cooling line to tank responsive to a pressure spikes at the head end of the cylinder during hoisting or other transitions in the hydraulic system. Reducing the pressure spikes in the brake cooling line improves reliability of the brake cooling apparatus by protecting seals from undue stresses.

公开(公告)号：US20160061280A1

公开(公告)日：2016-03-03

申请号：US14473124

申请日：2014-08-29

Applicant: Caterpillar Inc.

Inventor： Carl McIlheran ,  Andrew J. Kleitsch ,  John C. Vacca ,  Daniel Mather ,  Michael D. Hudson ,  Derek W. Holmes

IPC: F16D65/78

CPC classification number: F16D65/78 ,  B60T5/00 ,  F15B21/042 ,  F15B2211/50518 ,  F15B2211/5156 ,  F15B2211/611 ,  F15B2211/62 ,  F16D2065/783

Abstract: A relief valve in a hydraulic system in a machine selectively sends pressurized oil to both a brake cooling apparatus and a cylinder used to hoist a load. A relief valve lowers pressure spikes in a brake cooling line by dumping fluid in a brake cooling line to tank responsive to a pressure spikes at the head end of the cylinder during hoisting or other transitions in the hydraulic system. Reducing the pressure spikes in the brake cooling line improves reliability of the brake cooling apparatus by protecting seals from undue stresses.

Abstract translation: 机器中的液压系统中的安全阀选择性地将加压油输送到制动冷却装置和用于提升负载的气缸。 安全阀通过在液压系统的提升或其它过渡期间，响应于缸体头端处的压力尖峰而将制冷剂冷却管路中的流体倾倒在制动冷却管线中，降低了压力尖峰。 减少制动冷却线中的压力尖峰通过保护密封件免受不适当的应力而提高制动器冷却装置的可靠性。