Title:
JUMP PRESSURE LIMITING MECHANISM AND AIR BRAKE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/035344
Kind Code:
A1
Abstract:
A jump pressure limiting mechanism, related to the field of air braking systems. The jump pressure limiting mechanism comprises a valve body (100), a jump valve (200), an inflation valve (210), and a pressure limiting member (250). The valve body (100) is provided with an air inlet (110), a first chamber (120), a second chamber (130), and an air outlet (160). The jump valve (200) is disposed in the first chamber (120), the inflation valve (210) is disposed in the second chamber (130), both the jump valve (200) and the inflation valve (210) are connected to the pressure limiting member (250), and the pressure limiting member (250) is used to drive the jump valve (200) and the inflation valve (210) to move during a pressure change process in a pressure limiting chamber (170); when both the first chamber (120) and the second chamber (130) are opened, the air outlet (160) can output pressurized air relatively rapidly; when the first chamber (120) is closed and the second chamber (130) is opened, an output speed of the air outlet (160) can be controlled; and when both the first chamber (120) and the second chamber (130) are closed, a current pressure state of the air outlet (160) can be maintained. By means of switching of the three pressure limiting states, the problem of a pressure limiting structure needing to use a combination of two valves and being large in size is solved. Also disclosed is an air brake system.
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Inventors:
YANG JINLONG (CN)
XIAO CHEN (CN)
LV CHAO (CN)
LIU YI (CN)
LIU BAOHUA (CN)
SHEN YANFEI (CN)
YANG JIANPING (CN)
NING BO (CN)
LI GUO (CN)
SONG ZHIYONG (CN)
WANG KAIEN (CN)
TANG QI (CN)
XIAO CHEN (CN)
LV CHAO (CN)
LIU YI (CN)
LIU BAOHUA (CN)
SHEN YANFEI (CN)
YANG JIANPING (CN)
NING BO (CN)
LI GUO (CN)
SONG ZHIYONG (CN)
WANG KAIEN (CN)
TANG QI (CN)
Application Number:
PCT/CN2021/122242
Publication Date:
March 16, 2023
Filing Date:
September 30, 2021
Export Citation:
Assignee:
MEISHAN CRRC BRAKE SCIENCE & TECH CO LTD (CN)
International Classes:
B60T13/38; B60T11/34; B60T15/50; F16K17/34; G05D16/10
Foreign References:
| US20080047619A1 | 2008-02-28 | |||
| EP1595764A1 | 2005-11-16 | |||
| CN108473122A | 2018-08-31 | |||
| CN111895150A | 2020-11-06 | |||
| CN110242779A | 2019-09-17 | |||
| DE10046976A1 | 2002-04-18 | |||
| GB2137320A | 1984-10-03 | |||
| US20180251110A1 | 2018-09-06 |
Other References:
See also references of EP 4169780A4
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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