Oil level control device
US-9618015-B2 · Apr 11, 2017 · US
Hydraulic system for work machine
US10280906B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10280906-B2 |
| Application number | US-201715615056-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 6, 2017 |
| Priority date | Jun 7, 2016 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A hydraulic system for a work machine includes an operation member, a prime mover, a hydraulic pump driven by the prime mover, the hydraulic pump configured to output an operation fluid, a first temperature sensor to measure a temperature of the operation fluid, a first fluid tube connected to the hydraulic pump, an operation valve connected to the first fluid tube, the operation valve configured to control, in accordance with an operation extent of the operation member, a pressure of the outputted operation fluid, a hydraulic apparatus driven by the operation fluid outputted from the operation valve, a second hydraulic tube connecting the operation valve to the hydraulic apparatus, a discharge fluid tube to discharge the operation fluid included in the second fluid tube; and an actuation valve disposed on the discharge fluid tube, the actuation valve configured to control an aperture of the actuation valve based on the temperature.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydraulic system for a work machine comprising: an operation member; a prime mover; a hydraulic pump to be driven by the prime mover, the hydraulic pump being configured to output an operation fluid; a first temperature sensor to measure a temperature of the operation fluid; a first fluid tube connected to the hydraulic pump; an operation valve connected to the first fluid tube, the operation valve being configured to control, in accordance with an operation extent of the operation member, a pressure of the operation fluid to be outputted; a hydraulic apparatus to be driven by the operation fluid outputted from the operation valve; a second hydraulic tube connecting the operation valve to the hydraulic apparatus; a discharge fluid tube to discharge the operation fluid included in the second fluid tube; and an actuation valve disposed on the discharge fluid tube, the actuation valve being configured to control an aperture of the actuation valve based on the temperature. 2. The hydraulic system according to claim 1 , comprising a throttle disposed between the operation valve and a connecting portion connecting the second fluid tube and the discharge fluid tube to each other. 3. The hydraulic system according to claim 1 , wherein the actuation valve is opened when the temperature measured by the first temperature sensor is equal to a predetermined temperature or less. 4. The hydraulic system according to claim 1 , comprising a second temperature sensor to measure a temperature of an outside air, wherein the actuation valve is opened when the temperature of the operation fluid is equal to a predetermined temperature or less and the temperature measured by the second temperature sensor is equal to a predetermined temperature or less.
Assignees
Inventors
Classifications
the arms being pivoted at the rear of the vehicle chassis, e.g. skid steer loader · CPC title
Systems with two or more pumps · CPC title
movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins (seats for vehicles in general B60N2/00) · CPC title
Pilot-operated systems · CPC title
- F04B1/26Primary
Control · CPC title
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- What does patent US10280906B2 cover?
- A hydraulic system for a work machine includes an operation member, a prime mover, a hydraulic pump driven by the prime mover, the hydraulic pump configured to output an operation fluid, a first temperature sensor to measure a temperature of the operation fluid, a first fluid tube connected to the hydraulic pump, an operation valve connected to the first fluid tube, the operation valve configur…
- Who is the assignee on this patent?
- Kubota Kk
- What technology area does this patent fall under?
- Primary CPC classification F04B1/26. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).