GB855633A - Hydraulic elevator control system - Google Patents

Hydraulic elevator control system

Info

Publication number
GB855633A
GB855633A GB140059A GB140059A GB855633A GB 855633 A GB855633 A GB 855633A GB 140059 A GB140059 A GB 140059A GB 140059 A GB140059 A GB 140059A GB 855633 A GB855633 A GB 855633A
Authority
GB
United Kingdom
Prior art keywords
valve
ram
car
valves
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.)
Expired
Application number
GB140059A
Inventor
James H Bartholmew
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.)
Monarch Elevator & Machine Com
Original Assignee
Monarch Elevator & Machine Com
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 Monarch Elevator & Machine Com filed Critical Monarch Elevator & Machine Com
Priority to GB140059A priority Critical patent/GB855633A/en
Publication of GB855633A publication Critical patent/GB855633A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
    • B66B1/405—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings for hydraulically actuated elevators
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid

Abstract

855,633. Hydraulic lifts. MONARCH ELEVATOR & MACHINE CO. Jan. 14, 1959, No. 1400/59. Class 78 (3). [Also in Group XXIX] A control system for an hydraulic lift comprises a manifold B which extends between a reservoir A and a car-raising ram C, and which contains a pump P, and a non-return valve K arranged to pass fluid towards the ram only; a return line R, R<SP>1</SP> connected to the manifold between valve K and the ram; a by-pass line J3 connected to the manifold between the pump and valve K; and valves O, N and J which control the flow of fluid through lines R, R<SP>1</SP> and J3. In operation, with the car stationary, the back pressure exerted by ram C retains valve K closed, valves O, N and L are closed and valve J is open. Operation of an up-start control in the car or at a landing starts pump P and energizes pilot valve 12 which effects closing of valve J. When the pressure in valve J exceeds that in the ram, valve K opens and the ram is extended to raise the car which, as it nears the selected floor, operates the solenoid of pilot valve 15 which opens valve L. Fluid is then by-passed through valve L and a regulator valve M, the opening of which is determined by the pressure in the manifold, which is proportional to the load in the car, thereby reducing the flow to the ram gradually to a point where valve K closes. When the car reaches the selected floor, pilot valve 12 and pump P are de-energized, and the system returns to its first condition. Operation of a down start control in the car or at a landing energizes pilot valves 18, 19, thereby exhausting the ram through valves O, N and pipes R, R'. As the car approaches the selected floor it de-energizes valve 18 to reduce the rate of flow from the ram, and when at the selected floor it de-energizes valve 19 to stop further movement of the ram. The system is provided with a check valve E which limits the rate of flow from the ram in the event of a fault developing in the system, and a pulsation eliminator F (see Group XXIX), which absorbs pump pulsation shocks. A manually-operable valve 21 permits the rear to be lowered should valves O and N become inoperative. The Specification contains a detailed description of the construction of the valves.
GB140059A 1959-01-14 1959-01-14 Hydraulic elevator control system Expired GB855633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB140059A GB855633A (en) 1959-01-14 1959-01-14 Hydraulic elevator control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB140059A GB855633A (en) 1959-01-14 1959-01-14 Hydraulic elevator control system

Publications (1)

Publication Number Publication Date
GB855633A true GB855633A (en) 1960-12-07

Family

ID=9721342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB140059A Expired GB855633A (en) 1959-01-14 1959-01-14 Hydraulic elevator control system

Country Status (1)

Country Link
GB (1) GB855633A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1667018A1 (en) * 1967-03-02 1971-02-11 Brumme Kg Effbe Werk Expansion vessel for closed heating systems or for closed hydraulic systems
WO2013059626A1 (en) * 2011-10-21 2013-04-25 Youngers Stephen A Hydraulic fluid actuated equipment leveling apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1667018A1 (en) * 1967-03-02 1971-02-11 Brumme Kg Effbe Werk Expansion vessel for closed heating systems or for closed hydraulic systems
WO2013059626A1 (en) * 2011-10-21 2013-04-25 Youngers Stephen A Hydraulic fluid actuated equipment leveling apparatus
US8777177B2 (en) 2011-10-21 2014-07-15 Stephen A. Youngers Hydraulic fluid actuated equipment leveling assembly

Similar Documents

Publication Publication Date Title
US3906991A (en) Hydraulic lowering check valve
US2664916A (en) Hydraulic elevator descent control valve
GB1040379A (en) Fluid motor control system
GB1182641A (en) Pilot Operated Control Valve Mechanism
GB929481A (en) Hydraulic mechanism
GB1370736A (en) Winch apparatus
GB1493288A (en) Control circuit for hydraulic machine
GB1352310A (en) Hydraulic control valves
GB1513604A (en) Hydraulic systems for two speed lifting
GB855633A (en) Hydraulic elevator control system
GB863701A (en) Control for hydraulic jack circuits
US2633708A (en) Control for hydraulic presses
US2295948A (en) Valve
GB985950A (en) Improvements in hydraulic control valves
GB994992A (en) Improvements in or relating to power lift systems
GB1115725A (en) Hydraulic cushion for dies
GB514192A (en) Improvements in or relating to brakes for vehicles
GB1158850A (en) Hydraulic System for Press Brakes or the like
GB1050951A (en)
US2782599A (en) Control means for hydraulic elevators
US2793620A (en) Pressure interlocked-quick release valve
GB943869A (en) Hydraulic device
GB865419A (en) Improvements in or relating to hydraulic safety valves
GB899122A (en) Improvements in or relating to fluid pressure control valves
JPS57192601A (en) Pressure device of hydraulic oil tank