公开(公告)号：US20170130864A1

公开(公告)日：2017-05-11

申请号：US14934576

申请日：2015-11-06

Applicant: Caterpillar Inc.

Inventor： Dennis Ray BARBER ,  Matthew J. BESCHORNER

IPC: F16K31/42 ,  F15B11/08 ,  F15B13/04 ,  F16K11/07

CPC classification number: F16K31/426 ,  F15B11/08 ,  F15B13/0402 ,  F15B13/0435 ,  F15B2211/20576 ,  F15B2211/255 ,  F15B2211/30575 ,  F15B2211/329 ,  F15B2211/351 ,  F15B2211/353 ,  F16K11/07 ,  Y10T137/86622

Abstract: A valve is disclosed for use with a hydraulic circuit. The valve may have a valve block, a central bore formed in the valve block, an actuator passage formed in the valve block and intersecting with the central bore, and at least one of a supply and a drain passage. The valve may also have a control spool movable to selectively connect the actuator passage and the at least one of the supply passage and the drain passage. The control spool may have a base end, and a tip end with a tapered outer surface. The valve may also have a first actuator configured to selectively direct pilot fluid to the tip end of the control spool, and a second actuator configured to selectively direct pilot fluid to the base end of the control spool. Each of the first and second actuators may have a primary axis oriented generally orthogonal to an axis of the control spool, and may be located at opposing sides of the control spool.

公开(公告)号：US20170097098A1

公开(公告)日：2017-04-06

申请号：US14876082

申请日：2015-10-06

Applicant: Caterpillar Inc.

Inventor： Matthew J. BESCHORNER ,  Mikhail A. SOROKIN

IPC: F16K3/02 ,  E02F9/22

CPC classification number: F16K3/0254 ,  E02F9/2267 ,  E02F9/2285 ,  E02F9/2296 ,  F16K3/0218 ,  F16K3/0227 ,  F16K3/265 ,  F16K3/267 ,  F16K11/22 ,  F16K27/003

Abstract: A spool assembly is disclosed for use in a valve. The spool assembly may have a cylindrical body with a first end, a second end, and a bore passing from the first end through the second end. The spool assembly may also have a first insert with a first land slidably disposed inside the bore at the first end, and a second insert separate from the first insert. The second insert may have a second land slidably disposed inside the bore at the second end.

公开(公告)号：US20170138018A1

公开(公告)日：2017-05-18

申请号：US14940934

申请日：2015-11-13

Applicant: Caterpillar Inc.

Inventor： Matthew J. BESCHORNER ,  Naoto FUNABIKI ,  Brett J. JANSON ,  Darren A. BLUM

IPC: E02F9/26 ,  E02F9/22

CPC classification number: E02F9/2289 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2292 ,  E02F9/2296 ,  E02F9/267 ,  F15B19/005 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/30595 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/634 ,  F15B2211/6343 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/855 ,  F15B2211/857 ,  F15B2211/87 ,  G05B19/0425 ,  G05B19/46

Abstract: A hydraulic system is disclosed for use with. a machine. The hydraulic system may have an actuator, a valve associated with the actuator, at least one sensor configured to generate signals indicative of performance parameters of the hydraulic system, and a controller. The controller may be configured to determine at least one of a diagnostic movement and position of at least one of the fluid actuator and valve required to perform a health cheek, and to correlate the signals generated only during completion of the diagnostic movement or only when the at least one of the fluid actuator and valve are in the diagnostic position to values of the performance parameters. The controller may also be configured to make a comparison of the values of the performance parameters to expected values, and to determine a health of the hydraulic system based on the comparison.

公开(公告)号：US20160290516A1

公开(公告)日：2016-10-06

申请号：US14678101

申请日：2015-04-03

Applicant: Caterpillar Inc.

Inventor： Matthew J. BESCHORNER ,  Bryan A. JOHNSON ,  Hideki NAKAJIMA

IPC: F16K11/07

CPC classification number: F16K11/0712 ,  F15B13/0402 ,  F15B13/0405 ,  F15B13/0417 ,  F15B2013/008 ,  F15B2211/30575 ,  Y10T137/86461

Abstract: A spool is disclosed for use in a valve. The spool may have an elongated cylindrical body with a first end and a second end. The spool may also have a first land formed at the first end, a second land axially spaced apart from the first land, and a check element located between the first and second lands. The check element may have an outer diameter that is about 0.5-1% greater than an outer diameter of the second land.

Abstract translation: 公开了一种用于阀门的阀芯。 线轴可以具有带有第一端和第二端的细长圆柱体。 线轴还可以具有形成在第一端处的第一接地区，与第一接地区轴向间隔开的第二接地区以及位于第一和第二接地区之间的检查元件。 支票元件可以具有比第二平台的外径大约0.5-1％的外径。