GB1488711A - Hydraulic valve - Google Patents
Hydraulic valveInfo
- Publication number
- GB1488711A GB1488711A GB4153574A GB4153574A GB1488711A GB 1488711 A GB1488711 A GB 1488711A GB 4153574 A GB4153574 A GB 4153574A GB 4153574 A GB4153574 A GB 4153574A GB 1488711 A GB1488711 A GB 1488711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- valve
- spool
- piston
- outlet passages
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/08—Distributing valve-gear peculiar thereto
- F03C1/20—Distributing valve-gear peculiar thereto specially adapted for engines generating vibration only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
- B06B1/183—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with reciprocating masses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
1488711 Hydraulic reciprocating motors NIHON SPINDLE SEIZO KK 24 Sept 1974 [26 Sept 1973 12 Nov 1973 26 Dec 1973] 41535/74 Heading F1A [Also in Divisions B3 and B4] A valve, Fig. 5, for supplying oil alternately to a pair of outlet passages 2, 2', e.g. for driving a piston and cylinder type vibrator (20), comprises a spool 5 reciprocable in a housing 37, 37', 14, the reciprocations being automatically induced by the supply of pressurized oil to an inlet passage 1 in the housing and by the abutment of the spool against stoppers S. The spool 5 is mounted with clearance in a bore 4 and supported in bearings 6, 6'. Spool lands 9, 10, 10' are arranged to connect the inlet passage 1 to one of the outlet passages 2 or 2' while connecting the other outlet passage to exhaust via a port 3 or 3'. Alternative porting configurations are described, Figs. 5A and 7 (not shown). The stoppers S comprise resilient blocks or spring-loaded members 40, Fig. 5, which are axially adjustable manually or by automatic mechanical or hydraulic means to determine the frequency and centre of spool reciprocation. The hydraulic means shown comprise hydraulically actuated pistons 33. The axial adjustments result in changes in the frequency of the alternating flow and the proportions of oil delivered to the outlet passages 2, 2'. In Fig. 6 the valve B supplies liquid to cylinder chambers 49, 49' to cause a cylinder 44 to reciprocate over a piston 43. The cylinder 44 applies shock to e.g. a rock crushing tool or a pile gripped by jaws 78, the latter being carried by a casing 61 within which the cylinder 44 reciprocates. In order to vibrate the cylinder 44 equally about the piston 43, sensing ports 48, 48' and exhaust ports 51, 51' uncovered by the cylinder 44 in the event of cylinder deviation are provided. When during starting the cylinder is in its lowermost position, sensing port 48' communicates through the cylinder chamber 49 with exhaust port 51', whereby initially only the chamber 49 can be pressurized. Thus the cylinder is restored to its mid vibration position, any subsequent deviation resulting in pressurization of one or other of the sensing ports 48, 48'. Pressurization of a sensing port acts via a passage 36 or 36' on the piston 33 of the appropriate stopper S to alter the flow proportions to the passages 2, 2'. Further embodiments are described, Figs. 8-13 (not shown) in which the valve acts as a pilot valve to control a similarly constructed main valve, the latter valve having opposed pressure chambers for receiving the alternating supply and outlet passages for connection to the vibrator. In these embodiments the stopper S of the main and/or pilot valves are adjustable.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10819473A JPS5059677A (en) | 1973-09-26 | 1973-09-26 | |
JP12708273A JPS5726828B2 (en) | 1973-11-12 | 1973-11-12 | |
JP305374A JPS5095817A (en) | 1973-12-26 | 1973-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1488711A true GB1488711A (en) | 1977-10-12 |
Family
ID=27275638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4153574A Expired GB1488711A (en) | 1973-09-26 | 1974-09-24 | Hydraulic valve |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2445828A1 (en) |
GB (1) | GB1488711A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107701544A (en) * | 2017-10-20 | 2018-02-16 | 沈阳东北电力调节技术有限公司 | Electrohydraulic actuator oiling gas extraction system |
CN110848420A (en) * | 2019-12-05 | 2020-02-28 | 九江学院 | Method for controlling jet flow splitter valve and dual-jet-pipe electro-hydraulic servo valve controlled by splitter valve |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111810483A (en) * | 2020-08-04 | 2020-10-23 | 涌镇液压机械(上海)有限公司 | Electro-hydraulic valve reversing anti-impact structure |
CN112555474B (en) * | 2020-12-03 | 2023-05-16 | 重庆红江机械有限责任公司 | Mechanical lubricating oil control safety valve assembly |
-
1974
- 1974-09-24 GB GB4153574A patent/GB1488711A/en not_active Expired
- 1974-09-25 DE DE19742445828 patent/DE2445828A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107701544A (en) * | 2017-10-20 | 2018-02-16 | 沈阳东北电力调节技术有限公司 | Electrohydraulic actuator oiling gas extraction system |
CN107701544B (en) * | 2017-10-20 | 2023-12-12 | 沈阳东北电力调节技术有限公司 | Oiling and exhausting system of electrohydraulic actuator |
CN110848420A (en) * | 2019-12-05 | 2020-02-28 | 九江学院 | Method for controlling jet flow splitter valve and dual-jet-pipe electro-hydraulic servo valve controlled by splitter valve |
Also Published As
Publication number | Publication date |
---|---|
DE2445828A1 (en) | 1975-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |