JPS57108472A - Low-speed high torque motor in multi-torque type - Google Patents

Low-speed high torque motor in multi-torque type

Info

Publication number
JPS57108472A
JPS57108472A JP18362780A JP18362780A JPS57108472A JP S57108472 A JPS57108472 A JP S57108472A JP 18362780 A JP18362780 A JP 18362780A JP 18362780 A JP18362780 A JP 18362780A JP S57108472 A JPS57108472 A JP S57108472A
Authority
JP
Japan
Prior art keywords
pressure
torque motor
low
speed high
motor
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.)
Pending
Application number
JP18362780A
Other languages
Japanese (ja)
Inventor
Teiji Yokoyama
Chuzo Okamoto
Atsukata Soga
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki Co 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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP18362780A priority Critical patent/JPS57108472A/en
Publication of JPS57108472A publication Critical patent/JPS57108472A/en
Pending legal-status Critical Current

Links

Landscapes

  • Hydraulic Motors (AREA)

Abstract

PURPOSE: To have a smooth rotation of a low-speed high torque motor by connecting the ports of distributor valves with the inflowing and outflowing openings of the motor in sequence by the land of the spool and thereby changing the capacity at stages using the pressure signal.
CONSTITUTION: In compliance with the rise of the pilot pressure from the pilot pressure opening P the changeover land 39b of the spool 39 will allow the pressure liquid from the inflowing opening A to flow into ring grooves 44, 46 one after another through circumferential grooves 38b, 38c in synchronization with no-load changeover valves 35-1, 35-2, 35-3, so that the second liquid pressure chamber of each group 30-9, 30-3, 30-6 and then the third 30-2, 30-5, 30-8 are placed into on-load condition. Because there is an outflowing selector valve 43 in the covering 26 and, thereby, ring grooves 47, 49 are put into connection one after another in synchronization with the acting no-load selector valve in accordance with the pilot signal, rotation of the torque motor is secured to be smooth.
COPYRIGHT: (C)1982,JPO&Japio
JP18362780A 1980-12-24 1980-12-24 Low-speed high torque motor in multi-torque type Pending JPS57108472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18362780A JPS57108472A (en) 1980-12-24 1980-12-24 Low-speed high torque motor in multi-torque type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18362780A JPS57108472A (en) 1980-12-24 1980-12-24 Low-speed high torque motor in multi-torque type

Publications (1)

Publication Number Publication Date
JPS57108472A true JPS57108472A (en) 1982-07-06

Family

ID=16139074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18362780A Pending JPS57108472A (en) 1980-12-24 1980-12-24 Low-speed high torque motor in multi-torque type

Country Status (1)

Country Link
JP (1) JPS57108472A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767292A (en) * 1987-07-20 1988-08-30 Trw Inc. Electrical commutation apparatus
JP2009509095A (en) * 2005-09-23 2009-03-05 イートン コーポレーション Net displacement control method for fluid motor and pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767292A (en) * 1987-07-20 1988-08-30 Trw Inc. Electrical commutation apparatus
JP2009509095A (en) * 2005-09-23 2009-03-05 イートン コーポレーション Net displacement control method for fluid motor and pump

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