GB937521A - Improvements in or relating to hydraulic piston machines especially for high pressures - Google Patents

Improvements in or relating to hydraulic piston machines especially for high pressures

Info

Publication number
GB937521A
GB937521A GB1152860A GB1152860A GB937521A GB 937521 A GB937521 A GB 937521A GB 1152860 A GB1152860 A GB 1152860A GB 1152860 A GB1152860 A GB 1152860A GB 937521 A GB937521 A GB 937521A
Authority
GB
United Kingdom
Prior art keywords
piston
bore
annular groove
effective
swash
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
Application number
GB1152860A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB937521A publication Critical patent/GB937521A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F01B3/0008—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having self-acting distribution members, e.g. actuated by working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0082—Details
    • F01B3/0085—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0082—Details
    • F01B3/0085—Pistons
    • F01B3/0088—Piston shoe retaining means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F04B11/0033—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a mechanical spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/148—Pistons, piston-rods or piston-rod connections the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit

Abstract

937,521. Reciprocating pumps. ROBERT BOSCH G.m.b.H. April 1, 1960 [April 3, 1959], No. 11528/60. Class 102(1). [Also in Group XXIX] In an axial piston type pump to reduce noise in the opening and closing of the pump working chambers, the or each working piston functions as a slide valve and is acted upon by resilient means interposed between the effective pressure surface of the piston and the member driving the piston. As shown in Fig. 1, a swash-plate 7 mounted on a drive shaft 4 acts on pistons 8 slidably mounted in bores 9 in a fixed cylinder block. Each bore communicates with a suction passage 10 through an annular groove 11 and co-operates at its end with a non-return discharge valve 12. The pistons 8 are formed in two telescopic parts 15, 17 between which are interposed spring washers 19. At the commencement of the delivery stroke sudden rise in pressure is avoided due to a counter pressure acting on the piston surface 16<SP>1</SP> which retards movement of the piston part 15 relative to the part 17. Grooves 26 formed in the piston edge permit a small quantity of liquid to enter the bore 9 after the piston edge has passed the end of the annular groove 11 to further assist in the resistance to movement of the piston part 15. The grooves 26 also permit during suction a small intake of liquid into the bore 9 prior to the full opening of the bore to the annular groove 11. In another embodiment, the spring washers 19 are omitted but the piston which abuts the swash-plate is stated to be made of a material having sufficient resilience to provide an effective resilient means between the effective piston surface and the member driving the piston.
GB1152860A 1959-04-03 1960-04-01 Improvements in or relating to hydraulic piston machines especially for high pressures Expired GB937521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB52716A DE1109035B (en) 1959-04-03 1959-04-03 Hydraulic piston machine for high pressures

Publications (1)

Publication Number Publication Date
GB937521A true GB937521A (en) 1963-09-25

Family

ID=6969995

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1152860A Expired GB937521A (en) 1959-04-03 1960-04-01 Improvements in or relating to hydraulic piston machines especially for high pressures

Country Status (3)

Country Link
CH (2) CH388108A (en)
DE (1) DE1109035B (en)
GB (1) GB937521A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505530A (en) * 1994-11-04 1996-04-09 Itt Corporation Damped piston assembly for an anti-lock braking system pump
DE19852246B4 (en) * 1998-11-12 2004-05-27 Brueninghaus Hydromatik Gmbh Hydraulic machine
CN107956871A (en) * 2017-10-18 2018-04-24 潍柴动力股份有限公司 There is the plunger of wear-resistant warping resistance and plunger pump or piston motor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039363B (en) * 1955-12-09 1958-09-18 Josef Binhack Axial piston machine

Also Published As

Publication number Publication date
CH388108A (en) 1965-02-15
CH377650A (en) 1964-05-15
DE1109035B (en) 1961-06-15

Similar Documents

Publication Publication Date Title
GB1032523A (en) Improvements in or relating to internal combustion engines and pistons therefor
GB1057860A (en) Improvements in or relating to diaphragm pumps
GB937521A (en) Improvements in or relating to hydraulic piston machines especially for high pressures
GB586066A (en) Improvements in variable volume reciprocating pumps
GB1374538A (en) Piston pump
GB879285A (en) Improvements in and relating to radial-piston hydraulic pumps
GB679822A (en) Improvements in and relating to revolving-cylinder reciprocating hydraulic pumps
GB601616A (en) Improvements in or relating to reciprocating pumps
GB889561A (en) Improvements in axial ram pumps
GB1179336A (en) Reciprocating Pumps and Compressors
GB851701A (en) Hydraulic pump
GB740784A (en) Reciprocatory pumps
GB1170943A (en) An Impulse Pump.
GB464734A (en) Improvements in or relating to piston pumps for liquids
GB824152A (en) Improvements in and relating to pumps
GB901268A (en) Improvements in or relating to hydraulic pumps of the reciprocating plunger type
GB376882A (en) Improvements in or relating to oscillating cylinder plunger pumps
GB1150533A (en) Improvements in or relating to Hydraulic Pumps with Pistons, of the Type having a Cylinder Block
GB987115A (en) Improvements in or relating to reciprocating machines operable as pump or motor
GB891790A (en) Improvements in hydraulically operated double acting jacks
GB729936A (en) Improvements in or relating to reciprocating pumps
GB580177A (en) Improvements relating to variable stroke pumps
GB747021A (en) Improvements in and relating to roller mills, roller and breast mills or other apparatus incorporating co-operating pressure members between which substances are passed for grinding, crushing or comminuting or like purposes
GB626218A (en) Improvements in or relating to reciprocating pumps for liquids
GB1232075A (en)