US3745880A - Hydropneumatic recuperator for pieces of ordnance - Google Patents

Hydropneumatic recuperator for pieces of ordnance Download PDF

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Publication number
US3745880A
US3745880A US00174370A US3745880DA US3745880A US 3745880 A US3745880 A US 3745880A US 00174370 A US00174370 A US 00174370A US 3745880D A US3745880D A US 3745880DA US 3745880 A US3745880 A US 3745880A
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US
United States
Prior art keywords
recuperator
cylinder
piston
pressure
hydropneumatic
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 - Lifetime
Application number
US00174370A
Other languages
English (en)
Inventor
J Metz
E Zielinski
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall 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
Priority claimed from DE19702053098 external-priority patent/DE2053098C3/de
Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Application granted granted Critical
Publication of US3745880A publication Critical patent/US3745880A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • 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
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/16—Hybrid systems
    • F41A25/20—Hydropneumatic systems

Definitions

  • a hydropneumatic recuperator for pieces of ordnance, having pressure spaces for a pressure gas and a pressure liquid separated by a piston which comprises a recuperator cylinder containing pressure liquid and guided during the recoil of a gun barrel.
  • a recupcrator piston is provided within the recupcrator cylinder.
  • the recuperator piston has a piston rod which is adapted to be connected with the gun barrel.
  • a storage cylinder is adapted for attachment to a gun cradle and defines the pressure space for pressure gas.
  • An annular piston is provided on the periphery of the recuperator cylinder effecting the separation of the pressure gas and the pressure liquid.
  • the present invention relates to a hydropneumatic recuperator for pieces of ordnance.
  • An annular piston is provided on the periphery of the recuperator cylinder effecting the separation of the gas and liquid.
  • a further advantage achieved by the invention is the fact that a relatively thin and therefore elastic piston rod can be used, by which means slight alignment inaccuracies can be taken up without harm.
  • FIG. 1 is an axial section of the recuperator in longitudinal section after a completed counterrecoil
  • FIG. 2 is an axial section of the recuperator shown in FIG. 1 in the position of the recuperator cylinder at the beginning of the counterrecoil.
  • the recuperation designed in accordance with the present invention comprises a storage cylinder for receiving the pressure gas of the hydropneumatic recuperator, which is attached at its front end by means of a bayonet flange 2 to the gun cradle 3 shown in dot-dash line.
  • a recuperator cylinder 4 of lesser diameter containing the pressure liquid is arranged to slide axially in the storage cylinder 1, the recuperator cylinder 4 being closed at its front end and guided in the storage cylinder 1 by means of a guide ring 6 provided with bores 5.
  • the recuperator cylinder 4 has its periphery an annular piston 7, which forms the separation between the pressure gas space 8 surrounding the recuperator cylinder 4 and the pressure liquid located inside the recuperator cylinder 4 behind the piston 9 and behind the piston 7.
  • the recuperator piston 9 is arranged to displace longitudinally, the associated piston rod 10 being connected to the barrel at 11.
  • the space 24 between the end wall of the recuperator cylinder 4 and the piston 9 is connected to the atmosphere by a longitudinal bore in the piston rod.
  • the rear end wall 12 of the storage cylinder 1 is formed by a pistonlike insert introduced into the storage cylinder 1 and held by a screw coupling I3. At the same time the end wall 12 forms the seal of the pressure liquid space.
  • a bush 14 is centrally fixed, in which the piston rod 10 is guided; This bush 14 projects into the recuperator cylinder 4 through a spring-loaded non-retum valve 15 located at the open end of the recuperator cylinder 4.
  • the bush has two opposing longitudinal grooves 16 with a cross section which varies along their length.
  • the operation of the hydropneumatic recuperator is as follows:
  • the recuperator piston 9, which by means of the piston rod 10, is carried along by the barrel which itself is thrust back by the pressure of the explosive charge gases, brings about an accumulation of the pressure liquid in the recuperator cylinder 4, the nonreturn valve having lifted from its seat, so that the liquid passes through slot apertures 23 behind the annular piston 7.
  • the recuperator cylinder 4 is displaced in opposition to the direction of movement of the piston 9 (of FIG. 2) and the pressure gas located in the pressure gas space 8 is compressed.
  • the pressure of the compressed gas on the annular piston 7 brings about the counterrecoil of the barrel.
  • the non-return valve 15 closes, so that the liquid moved by the piston 7 can enter the recuperator cylinder 4 only through the longitudinal grooves 16 and actuate the recuperator piston 9.
  • the respective cross section of the grooves'16 in the region of the bore in the non-return valve thus efiects a counterrecoil speed which can be varied by the length of the counterrecoil displacement.
  • a spring-loaded plunger 17 which plunger represents an indicator device for a possible loss of fluid.
  • the plunger 17 In its front end position (normal position) the plunger 17 with its collar 18 abuts against a shoulder 19 in the end wall 12.
  • An extension 20 of the plunger 17 projects into the space filled with pressure liquid behind the recuperator cylinder 4.
  • the plunger 17 When the vlume of fluid is low, the plunger 17 is actuated by the end face 21 of the recuperator cylinder 4 and is displaced against the spring force, so that the rear end 22 of the plunger 17 extends behind the end wall 12, so that a possible fluid loss is indicated.
  • recuperator piston within said recuperator cylinder
  • recuperator piston having a piston rod connected with said gun barrel
  • a storage cylinder attachable to a gun cradle and delining the pressure space for pressure gas
  • a bush is provided in said rear end wall and serving for guiding said piston rod and extending in the direction of said recuperator cylinder,
  • said bush projecting into said recuperator cylinder through said non-return valve and having longitudinal grooves with cross-sections varying across their length, whereby in co-operation with said nonretum valve assembly sliding with said recuperator cylinder a variable throttle cross section depending upon the displacement is provided.
  • the hydropneumatic recuperator as set forth in claim 2, which includes a spring-biased indicator arrangement is provided in said rear end wall of said storage cylinder, and
  • said spring-biased indicator arrangement is actuated by the end face of said recuperator cylinder, when a loss of fluid occurs.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chairs Characterized By Structure (AREA)
  • Separation By Low-Temperature Treatments (AREA)
US00174370A 1970-10-29 1971-08-24 Hydropneumatic recuperator for pieces of ordnance Expired - Lifetime US3745880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702053098 DE2053098C3 (de) 1970-10-29 Hydropneumatischer Rohrvorholer für Geschütze

Publications (1)

Publication Number Publication Date
US3745880A true US3745880A (en) 1973-07-17

Family

ID=5786505

Family Applications (1)

Application Number Title Priority Date Filing Date
US00174370A Expired - Lifetime US3745880A (en) 1970-10-29 1971-08-24 Hydropneumatic recuperator for pieces of ordnance

Country Status (5)

Country Link
US (1) US3745880A (xx)
BE (1) BE774661A (xx)
CH (1) CH522870A (xx)
FR (1) FR2113281A5 (xx)
NL (1) NL7110752A (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485722A (en) * 1980-04-19 1984-12-04 Rheinmetall Gmbh Recoil brake with hydropneumatic recuperator and forward movement damping
US4774873A (en) * 1986-09-15 1988-10-04 The United States Of America As Represented By The Secretary Of The Army Sleeve recuperator
US4867038A (en) * 1987-08-27 1989-09-19 Rheinmetall Gmbh Recoil brake for a gun
US4875402A (en) * 1987-08-27 1989-10-24 Rheinmetall Gmbh Recoil brake for a gun having a heat equalization and indication device
US4898072A (en) * 1987-07-28 1990-02-06 Rheinmetall Gmbh Weapon and ammunition carrier for a gun
US4924751A (en) * 1988-07-16 1990-05-15 Rheinmetall Gmbh Gun barrel recoil brake with throttled counterrecoil
US5608180A (en) * 1994-04-15 1997-03-04 Giat Industries Maneuvering device for the recoiling mass of a piece of artillery
US6536324B1 (en) * 1999-02-16 2003-03-25 Tda Armements S.A.S. Anti-recoil device with brake, brake compensator and recuperator
US20070169617A1 (en) * 2006-01-24 2007-07-26 Marcos Trigo Gas spring for a revolver cannon or breech cannon
GB2533320A (en) * 2014-12-16 2016-06-22 Airbus Operations Ltd Actuator
US20170328667A1 (en) * 2011-04-21 2017-11-16 Mandus Group, Ltd. Soft Recoil System
US20210317635A1 (en) * 2018-09-03 2021-10-14 Caterpillar Global Mining Llc Apparatus for operating a machine work tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797041B1 (fr) * 1999-07-29 2002-09-20 Giat Ind Sa Jauge de parage pour recuperateur d'arme de gros calibre

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1690281A (en) * 1927-01-13 1928-11-06 Vickers Ltd Recoil and run-out apparatus for ordnance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1690281A (en) * 1927-01-13 1928-11-06 Vickers Ltd Recoil and run-out apparatus for ordnance

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485722A (en) * 1980-04-19 1984-12-04 Rheinmetall Gmbh Recoil brake with hydropneumatic recuperator and forward movement damping
US4774873A (en) * 1986-09-15 1988-10-04 The United States Of America As Represented By The Secretary Of The Army Sleeve recuperator
US4898072A (en) * 1987-07-28 1990-02-06 Rheinmetall Gmbh Weapon and ammunition carrier for a gun
US4867038A (en) * 1987-08-27 1989-09-19 Rheinmetall Gmbh Recoil brake for a gun
US4875402A (en) * 1987-08-27 1989-10-24 Rheinmetall Gmbh Recoil brake for a gun having a heat equalization and indication device
US4924751A (en) * 1988-07-16 1990-05-15 Rheinmetall Gmbh Gun barrel recoil brake with throttled counterrecoil
US5608180A (en) * 1994-04-15 1997-03-04 Giat Industries Maneuvering device for the recoiling mass of a piece of artillery
US6536324B1 (en) * 1999-02-16 2003-03-25 Tda Armements S.A.S. Anti-recoil device with brake, brake compensator and recuperator
US20070169617A1 (en) * 2006-01-24 2007-07-26 Marcos Trigo Gas spring for a revolver cannon or breech cannon
US7938054B2 (en) * 2006-01-24 2011-05-10 Rheinmetall Air Defence Ag Gas spring for a revolver cannon or breech cannon
US20170328667A1 (en) * 2011-04-21 2017-11-16 Mandus Group, Ltd. Soft Recoil System
US10451375B2 (en) * 2011-04-21 2019-10-22 Mandus Group Llc Soft recoil system
US10775123B2 (en) 2011-04-21 2020-09-15 Mandus Group Llc Soft recoil system
GB2533320A (en) * 2014-12-16 2016-06-22 Airbus Operations Ltd Actuator
US10358210B2 (en) 2014-12-16 2019-07-23 Airbus Operations Limited Aircraft actuator
US20210317635A1 (en) * 2018-09-03 2021-10-14 Caterpillar Global Mining Llc Apparatus for operating a machine work tool

Also Published As

Publication number Publication date
FR2113281A5 (xx) 1972-06-23
DE2053098B2 (de) 1975-07-31
BE774661A (fr) 1972-02-14
NL7110752A (xx) 1972-05-03
CH522870A (de) 1972-05-15
DE2053098A1 (de) 1972-05-04

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