EP0127191A3 - Hydraulic impact mechanism - Google Patents

Hydraulic impact mechanism Download PDF

Info

Publication number
EP0127191A3
EP0127191A3 EP84106221A EP84106221A EP0127191A3 EP 0127191 A3 EP0127191 A3 EP 0127191A3 EP 84106221 A EP84106221 A EP 84106221A EP 84106221 A EP84106221 A EP 84106221A EP 0127191 A3 EP0127191 A3 EP 0127191A3
Authority
EP
European Patent Office
Prior art keywords
piston
working cylinder
chamber
working
distributor bushing
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
EP84106221A
Other languages
German (de)
Other versions
EP0127191A2 (en
EP0127191B1 (en
Inventor
Georgi Stoyanov Georgiev
Ivan Georgiev Kralev
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.)
Stopanski Kombinat SA Teshko Mashinostroene
Original Assignee
Stopanski Kombinat SA Teshko Mashinostroene
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 Stopanski Kombinat SA Teshko Mashinostroene filed Critical Stopanski Kombinat SA Teshko Mashinostroene
Priority to AT84106221T priority Critical patent/ATE55288T1/en
Publication of EP0127191A2 publication Critical patent/EP0127191A2/en
Publication of EP0127191A3 publication Critical patent/EP0127191A3/en
Application granted granted Critical
Publication of EP0127191B1 publication Critical patent/EP0127191B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/005—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is coaxial with the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Fluid-Damping Devices (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Lubricants (AREA)

Abstract

1. Hydraulic impact mechanism having a working cylinder (1, 2, 30, 36, 39, 40), a distributor bushing (3) in the centre region of the working cylinder (2) arranged in a displacement manner between a front and a rear position with constant internal diameter which has several outlet openings (4, 5), a piston (6) movable between a forward and a rear position, guided in the working cylinder (30, 36) and the distributor bushing (3), on which piston a front and a rear band with the same diameters are arranged at a distance, one of which is guided in the distributor bushing (3) and which between them form an intermediate chamber (14) which is connected at times to a pressurised oil flow (P) or to a return (R) of an oil combination (26), the piston (6) forming with the working cylinder (36) at the rear adjoining the rear band a rear working chamber (15), and at the front adjoining the front band with the working cylinder (2, 30) and the distributor bushing (3), a front working chamber (35), characterized in that the distributor bushing (3) has a constant outer diameter over its entire length and the front band is guided into it, the intermediate chamber (14) in the rear position of the piston (6) is connected by means of control openings (37) provided in the rear region of the working cylinder (36) to the pressurised oil flow (P) and in the front position of the piston (6) by means of rear outlet openings (5) provided diametrically opposite in the distributor bushing (3) to the return (R), the rear working chamber (15) is constantly connected to the pressurised oil flow (P) by means of inclined openings (38) formed diametrically opposite in the working cylinder (36), and the front working chamber (35) is connected at times to the return (R) or in the front position of the piston (6) and rear position of the distributor bushing (3) by means of a passage (16, 17, 18, 19, 20, 32) formed in the working cylinder (2, 30) and a supply slot formed in front of the front working chamber (35) on the piston (6) to a supply chamber (33) constantly connected to the pressurised oil flow (P), formed between the piston (6) and the working cylinder (30) in its front region, whereby in the rear position of the piston (6) the connection of the supply slot to the supply chamber (33) and thus the connection of the front working chamber (35) to the pressurised oil flow (P) is interrupted, while the forward working chamber (35) at the same time is connected by means of front outlet openings (4) provided diametrically opposite in the distributor bushing (3) to the return (R).
EP84106221A 1983-05-30 1984-05-30 Hydraulic impact mechanism Expired - Lifetime EP0127191B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106221T ATE55288T1 (en) 1983-05-30 1984-05-30 HYDRAULIC IMPACT MECHANISM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG8361138A BG38432A1 (en) 1983-05-30 1983-05-30 Hydraulic percussion mechanism
BG61138/83 1983-05-30

Publications (3)

Publication Number Publication Date
EP0127191A2 EP0127191A2 (en) 1984-12-05
EP0127191A3 true EP0127191A3 (en) 1986-12-30
EP0127191B1 EP0127191B1 (en) 1990-08-08

Family

ID=3912263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106221A Expired - Lifetime EP0127191B1 (en) 1983-05-30 1984-05-30 Hydraulic impact mechanism

Country Status (5)

Country Link
EP (1) EP0127191B1 (en)
AT (1) ATE55288T1 (en)
BG (1) BG38432A1 (en)
DE (1) DE3482914D1 (en)
HU (1) HU195682B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE690185C (en) * 1939-02-05 1940-04-18 Stahlwerk Mark Wengern Akt Ges Compressed air impact tool with slide control
DE1503222A1 (en) * 1965-04-23 1969-04-03 Vickers Ltd Hydraulically operated tool
DE2443800A1 (en) * 1973-09-14 1975-03-20 Roxon Oy HYDRAULICALLY OPERATED IMPACT DEVICE
FR2328547A1 (en) * 1975-10-20 1977-05-20 Tampella Oy Ab HYDRAULIC PERCUSSION DEVICE
BG27475A1 (en) * 1978-10-03 1979-11-12 Georgiev Hydraulic percussive mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE690185C (en) * 1939-02-05 1940-04-18 Stahlwerk Mark Wengern Akt Ges Compressed air impact tool with slide control
DE1503222A1 (en) * 1965-04-23 1969-04-03 Vickers Ltd Hydraulically operated tool
DE2443800A1 (en) * 1973-09-14 1975-03-20 Roxon Oy HYDRAULICALLY OPERATED IMPACT DEVICE
FR2328547A1 (en) * 1975-10-20 1977-05-20 Tampella Oy Ab HYDRAULIC PERCUSSION DEVICE
BG27475A1 (en) * 1978-10-03 1979-11-12 Georgiev Hydraulic percussive mechanism

Also Published As

Publication number Publication date
HU195682B (en) 1988-06-28
DE3482914D1 (en) 1990-09-13
HUT34800A (en) 1985-04-28
BG38432A1 (en) 1985-12-16
ATE55288T1 (en) 1990-08-15
EP0127191A2 (en) 1984-12-05
EP0127191B1 (en) 1990-08-08

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