GB2287990A - Brake device for inertia body driving hydraulic circuit - Google Patents

Brake device for inertia body driving hydraulic circuit

Info

Publication number
GB2287990A
GB2287990A GB9510419A GB9510419A GB2287990A GB 2287990 A GB2287990 A GB 2287990A GB 9510419 A GB9510419 A GB 9510419A GB 9510419 A GB9510419 A GB 9510419A GB 2287990 A GB2287990 A GB 2287990A
Authority
GB
United Kingdom
Prior art keywords
oil
port
communicating
brake device
ports
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.)
Granted
Application number
GB9510419A
Other versions
GB2287990B (en
GB9510419D0 (en
Inventor
Mitsuru Oshiro
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of GB9510419D0 publication Critical patent/GB9510419D0/en
Publication of GB2287990A publication Critical patent/GB2287990A/en
Application granted granted Critical
Publication of GB2287990B publication Critical patent/GB2287990B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F15B11/0445—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/128—Braking systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/06—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a pump circulating fluid, braking being effected by throttling of the circulation
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F15B2211/50527—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves using cross-pressure relief valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
    • F15B2211/5154—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

A brake device for an inertia body driving hydraulic circuit characterized in that first and second oil ports (11, 12) are formed in parallel to each other in a housing (10) so as to connect said first and second oil ports to an inertia body driving actuator (18), that said first and second oil ports are caused to communicate with each other via a communicating oil port (13), which is then caused to communicate with a tank port (14), that first and second mounting holes (15, 16) are formed in said housing in such a manner that they open to said first and second oil port and are concentric with said communicating oil port, and that first and second suction safety valves (17, 17) having suction and relief functions are provided in said first and second mounting holes, respectively. With this brake device, since the first and second oil ports are formed in parallel to each other in the housing, the first and second oil ports are made to communicate with each other via the communicating oil port, and the suction safety valves are respectively provided in the first and second mounting holes which are concentric with the communicating port, the shape of the oil ports are simple for case of working. Moreover, pressure oil in the tank port is sucked into the first and second oil ports in a linear fashion via the communicating oil port to reduce the pressure loss, thereby making it possible to positively prevent cavitation. <IMAGE>
GB9510419A 1992-12-01 1993-12-01 Braking apparatus of a hydraulic circuit for driving an inertia body Expired - Fee Related GB2287990B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8285892U JPH0647702U (en) 1992-12-01 1992-12-01 Inertial drive hydraulic circuit braking device
PCT/JP1993/001753 WO1994012794A1 (en) 1992-12-01 1993-12-01 Brake device for inertia body driving hydraulic circuit

Publications (3)

Publication Number Publication Date
GB9510419D0 GB9510419D0 (en) 1995-07-19
GB2287990A true GB2287990A (en) 1995-10-04
GB2287990B GB2287990B (en) 1996-12-04

Family

ID=13786053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9510419A Expired - Fee Related GB2287990B (en) 1992-12-01 1993-12-01 Braking apparatus of a hydraulic circuit for driving an inertia body

Country Status (4)

Country Link
JP (1) JPH0647702U (en)
DE (1) DE4396180T1 (en)
GB (1) GB2287990B (en)
WO (1) WO1994012794A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6284469B2 (en) * 2014-12-03 2018-02-28 株式会社クボタ Hydraulic circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551441B2 (en) * 1973-04-14 1980-01-14

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0352384A (en) * 1989-07-20 1991-03-06 Fuji Photo Film Co Ltd Variable length coding device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551441B2 (en) * 1973-04-14 1980-01-14

Also Published As

Publication number Publication date
JPH0647702U (en) 1994-06-28
WO1994012794A1 (en) 1994-06-09
GB2287990B (en) 1996-12-04
DE4396180T1 (en) 1995-11-23
GB9510419D0 (en) 1995-07-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981201