JPS5451163A - Hydraulic elevator - Google Patents
Hydraulic elevatorInfo
- Publication number
- JPS5451163A JPS5451163A JP11677377A JP11677377A JPS5451163A JP S5451163 A JPS5451163 A JP S5451163A JP 11677377 A JP11677377 A JP 11677377A JP 11677377 A JP11677377 A JP 11677377A JP S5451163 A JPS5451163 A JP S5451163A
- Authority
- JP
- Japan
- Prior art keywords
- gondola
- pressure oil
- control valve
- flow control
- hydraulic pump
- 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
Links
Landscapes
- Types And Forms Of Lifts (AREA)
Abstract
PURPOSE: To improve the effect of vibration suppression and decrease vibration noises, by making a plunger of a pipe packed with granular or fibrous material.
CONSTITUTION: The plunger 7 of a hydralulic cylinder 6 coupled to a gondola 8 is made of the pipe 9 packed with a filler 12 made of sand grains or chips of metal material, wich are rubbed by one another. When a hydraulic pump 1 is driven by an electric motor 2 and pressure oil is thereby supplied to the hydraulic cylinder 6, the gondola 8 is moved up. When the hydraulic pump 1 is stopped and the pressure oil is discharged into an oil tank 5 through a flow control valve 3, the gondola 8 is moved down. The pulsating pressure, which is caused by the hydraulic pump 1 and the flow control valve 3 and transmitted to the pressure oil in the hydraulic cylinder 6 during the move-up of the gondola, and the pulsating pressure, which is caused by the flow control valve 3 and transmitted to the pressure oil in the hydraulic cylinder 6 during the move-down of the gondola, are damped by the mutual rubbing of the filler 12. Thereby, the purpose is attained
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11677377A JPS5451163A (en) | 1977-09-30 | 1977-09-30 | Hydraulic elevator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11677377A JPS5451163A (en) | 1977-09-30 | 1977-09-30 | Hydraulic elevator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5451163A true JPS5451163A (en) | 1979-04-21 |
Family
ID=14695359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11677377A Pending JPS5451163A (en) | 1977-09-30 | 1977-09-30 | Hydraulic elevator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451163A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5014826A (en) * | 1989-02-28 | 1991-05-14 | Otis Elevator Company | Apparatus for maintaining an air gap in a toroidal type linear motor |
US5033588A (en) * | 1989-02-28 | 1991-07-23 | Otis Elevator Company | Apparatus for maintaining an air gap in a toroidal linear motor |
-
1977
- 1977-09-30 JP JP11677377A patent/JPS5451163A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5014826A (en) * | 1989-02-28 | 1991-05-14 | Otis Elevator Company | Apparatus for maintaining an air gap in a toroidal type linear motor |
US5033588A (en) * | 1989-02-28 | 1991-07-23 | Otis Elevator Company | Apparatus for maintaining an air gap in a toroidal linear motor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2173527A1 (en) | Hydraulic Pressure Control Apparatus Having Device for Estimating Amount of Fluid in Reservoir to Which the Fluid is Discharged to Reduce Cylinder Pressure | |
JPS56131802A (en) | Oil hydraulic circuit for slewing drive of construction equipment | |
JPS5451163A (en) | Hydraulic elevator | |
US4463838A (en) | Vibration jacks | |
JPS5455218A (en) | Drive controller for engine supercharger | |
JPS56148693A (en) | Rated displacement oil pump | |
JPS54128808A (en) | Control method for gas booster or the like | |
JPS5754624A (en) | Hydraulic control circuit for pile driving hammer | |
JPS55122134A (en) | Electrohydraulic servo tester | |
FR2335708A1 (en) | Reciprocating sludge pump unit - has auxiliary piston providing protective clean fluid flow to moving parts of sludge piston | |
JPS5690101A (en) | Power unit for hydraulic elevator | |
JPS5590703A (en) | Oil hydraulic circuit of oil hydraulic shovel | |
JPS5465801A (en) | Operation of drain pump | |
JPS56154186A (en) | Protection device for hydraulic pump in oil pressure-operated device | |
JPS5744765A (en) | Fuel jetting apparatus | |
JPS5214144A (en) | Starting method of the pump water wheel and the pump | |
JPS5512247A (en) | Delivery flow rate controller for variable flow pump | |
JPS5557701A (en) | Power unit device for hydraulic pressure elevator | |
JPS5372942A (en) | Hydraulic machine operation | |
JPS54112001A (en) | Parallel drive of hydraulic machines transporting fluid by impeller | |
JPS5572699A (en) | Pump device | |
JPS5751995A (en) | Submerged motor pump | |
JPS5355506A (en) | Relief valve for pump | |
JPS5623122A (en) | Hydraulic hoist | |
JPS5549597A (en) | Method of controlling flow rate of slurry |