SU678011A1 - Arrangement for emergency arresting of load-handling machine at stepwise lowering of load - Google Patents

Arrangement for emergency arresting of load-handling machine at stepwise lowering of load

Info

Publication number
SU678011A1
SU678011A1 SU742029850A SU2029850A SU678011A1 SU 678011 A1 SU678011 A1 SU 678011A1 SU 742029850 A SU742029850 A SU 742029850A SU 2029850 A SU2029850 A SU 2029850A SU 678011 A1 SU678011 A1 SU 678011A1
Authority
SU
USSR - Soviet Union
Prior art keywords
load
arrangement
handling machine
stepwise lowering
arresting
Prior art date
Application number
SU742029850A
Other languages
Russian (ru)
Inventor
Борис Петрович Панов
Владимир Ефимович Чевидаев
Владимир Львович Попов
Original Assignee
Предприятие П/Я А-7449
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 Предприятие П/Я А-7449 filed Critical Предприятие П/Я А-7449
Priority to SU742029850A priority Critical patent/SU678011A1/en
Application granted granted Critical
Publication of SU678011A1 publication Critical patent/SU678011A1/en

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  • Control And Safety Of Cranes (AREA)

Description

. г Изобретение относитс  к предохра нительным и сигнализационным устрой ствам в подъемных машинах, а именно к устройствам автоматической остано ки грузоподъемной машины при ослаблении нат жени  грузоиесущего троса в случае зависани  груза. Известно устройство дл  автомати ческой остановки грузоподъемной машины при ступенчатом спуске груза, содержащее датчик веса опускаемого груза с преобразователем, блок срав нени , один вход которого подключен к формирователю установки, а выход к исполнительному реле, один из разтыкающих контактов кЬторО1 о йключен в цепь питани  привода машины 1. Недостатком этого устройства  вл етс  независимость порога срабатывани  защиты, определ емого коэффициентом передачи датчика, коэффициен том усилени  усилител  и чувствитель ностью исполнительного органа, от ве личины нагрузки в начашьный момент опускани  груза, что снижает надежность работы устройства в широком ди намическом диапазоне нагрузок. Целью изобрётени   вл етс  повышение надежности работы устройства при расширении динамического диапазона нагрузок. Цель достигаетс  тем, что устройство снабжено умножителем, включенным между другим входом блока сравнени  и выходом преобразовател  датчика, причем блок формировани  уставки выполнен на элементе пам ти, подключенном одним входом к преобразователю датчика, и формирователе сигнала разрешени  записи, тюдклЮченном своим выходом к другому входу элемента пам ти а входом - к источ нику апр жени  через другой размыкающий контакт исрапнительногс реле. На чертеже представлена функциональна  схема устройства. Устройство содержит датчик 1 веса с преобразователем 2 сигнала датчика, выход которого соединен с элементом 3 пам ги и умножителем 4,. блок 5 сравнени , предназначенный дл  выделени  состо ний равенства сигналов, поступающих на его выходы, и управлени  исполнительным реле 6, через размыкающие контакты 6.1 н 6,2 которого при нажатой кнопке 7 Спуск с источниками напр жени  8 и 9 соответственно соедин ютс  формирователь 10 сигнала разрешени  записи,, вход щий . The invention relates to safety and alarm devices in hoisting machines, namely, to devices for automatically stopping a lifting machine when relieving the tension of a load bearing cable in the event of a load hanging. A device is known for automatically stopping a load lifting machine during step-down load, containing a weight sensor of a drop load with a converter, a comparison unit, one input of which is connected to the setup driver, and the output to the executive relay, is connected to the drive power supply circuit. machines 1. A disadvantage of this device is the independence of the protection response threshold determined by the sensor's transmission coefficient, amplifier gain factor and performance sensitivity. of the load, at the beginning of the load, which reduces the reliability of the device in a wide dynamic range of loads. The purpose of the invention is to increase the reliability of the device while expanding the dynamic range of loads. The goal is achieved in that the device is equipped with a multiplier connected between another input of the comparator unit and the output of the sensor converter, the setpoint shaping unit being made on the memory element connected by one input to the sensor converter and the recording resolution signal generator, which is connected to another element input memory and input - to the source of April through another break contact and a spark relay. The drawing shows the functional diagram of the device. The device contains a weight sensor 1 with a sensor signal converter 2, the output of which is connected to the memory element 3 and the multiplier 4 ,. Comparison unit 5, designed to isolate the equality of signals arriving at its outputs and control the executive relay 6, through disconnecting contacts 6.1 and 6.2 of which, while pressing the button 7 Descent with voltage sources 8 and 9, respectively, shaper 10 permission to record, incoming

SU742029850A 1974-06-06 1974-06-06 Arrangement for emergency arresting of load-handling machine at stepwise lowering of load SU678011A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU742029850A SU678011A1 (en) 1974-06-06 1974-06-06 Arrangement for emergency arresting of load-handling machine at stepwise lowering of load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU742029850A SU678011A1 (en) 1974-06-06 1974-06-06 Arrangement for emergency arresting of load-handling machine at stepwise lowering of load

Publications (1)

Publication Number Publication Date
SU678011A1 true SU678011A1 (en) 1979-08-05

Family

ID=20586407

Family Applications (1)

Application Number Title Priority Date Filing Date
SU742029850A SU678011A1 (en) 1974-06-06 1974-06-06 Arrangement for emergency arresting of load-handling machine at stepwise lowering of load

Country Status (1)

Country Link
SU (1) SU678011A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292546A1 (en) * 2009-09-04 2011-03-09 Inventio AG Apparatus and method for detecting whether an elevator car has become jammed along its travel path

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2292546A1 (en) * 2009-09-04 2011-03-09 Inventio AG Apparatus and method for detecting whether an elevator car has become jammed along its travel path

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