JPS61197301U

JPS61197301U -

Info

Publication number: JPS61197301U
Application number: JP8299785U
Authority: JP
Priority date: 1985-05-30
Filing date: 1985-05-30
Publication date: 1986-12-09

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す油圧回路図であ
る。１……増圧器、２……低圧シリンダ部、３……
増圧シリンダ部、４……ピストン、５……大径部
、８……第１小径部、９……第２小径部、１０…
…作動油供給装置、１９……第２小径高圧室、２
０……高圧回路、２４……第１大径高圧室、２５
……連絡回路、２６……パイロツトチエツク弁、
２８……ドレーン回路。 FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Pressure booster, 2... Low pressure cylinder section, 3...
Pressure increase cylinder part, 4... Piston, 5... Large diameter part, 8... First small diameter part, 9... Second small diameter part, 10...
...Hydraulic oil supply device, 19...Second small diameter high pressure chamber, 2
0... High pressure circuit, 24... First large diameter high pressure chamber, 25
...Communication circuit, 26...Pilot check valve,
28...Drain circuit.

Claims

[Scope of utility model registration request]

Piston 4 large diameter part 5 and piston 4 small diameter part 8,
a pressure intensifier 1 having a low-pressure cylinder part 2 and a pressure-increasing cylinder part 3, each of which can be reciprocated; and a fluid supply device 10 which can freely supply fluid to the low-pressure cylinder part 2;
In a pressure booster equipped with a high pressure circuit 20 that connects high pressure chambers 19 and 24 of a pressure boost cylinder section 3 and fluid equipment, the pressure boost cylinder section 3 has a first large diameter high pressure chamber 24 and a second small diameter high pressure chamber. On the other hand, the piston 4 small diameter portions 8 and 9 are provided with a first small diameter portion 8 and a second small diameter portion 9 that are reciprocally movable within both high pressure chambers 24 and 19, respectively, and the second small diameter high pressure chamber 19 and A first large-diameter high-pressure chamber 2 is connected to the fluid equipment 18 by a high-pressure circuit 20.
4 and the high pressure circuit 20 are connected by a communication circuit 25, and a pilot check valve 2 is provided in the middle of the communication circuit 25 to allow fluid to be supplied to the high pressure circuit 20 side.
6 is provided, and a drain circuit 28 that can be opened and closed is provided on the first large diameter high pressure chamber 24 side.