SU945057A1

SU945057A1 - Limiter of boom crane carriage load

Info

Publication number: SU945057A1
Application number: SU792792347A
Authority: SU
Inventors: Константин Николаевич Воробьев; Вера Анатольевна Чернышева
Original assignee: Уральский лесотехнический институт
Priority date: 1979-07-02
Filing date: 1979-07-02
Publication date: 1982-07-23

Description

Изобретение относится к подъемнотранспортному оборудованию, а именно к устройствам для ограничения грузоподъемности стрелового крана.The invention relates to hoisting equipment, and in particular to devices for limiting the carrying capacity of a jib crane.

Известен ограничитель грузоподъемности грузовой каретки стрелового ⁵крана, содержащий подпружиненный рычаг, соединенный с грузовым канатом и связанный с одной контакт-деталь» контакта электрической цепи управления и корректирующим устройством датчика вылета, выполненным с фрикционным колесом СП.Known limiter of the load capacity of the load carriage of the jib ⁵ crane, containing a spring-loaded lever connected to the cargo rope and connected to one contact part "of the contact of the electrical control circuit and the correction device of the departure sensor made with the friction wheel SP.

Недостатком известного ограничителя является сравнительно сложная ₁₅конструкция.A disadvantage of the known limiter is the relatively complex ₁₅ design.

Цель изобретения - упрощение конструкции ограничителя грузоподъемности .The purpose of the invention is to simplify the design of the load limiter.

Указанная цель достигается тем, 20 что корректирующее устройство датчика вылета снабжено коническими шестернями, одна из которых связана с фрикционным колесом, сопряженным с метал-¹ локонструкцией стрелы и винтовой парой , винт которой соединен с другой конической шестерней, а на гайке винтовой пары установлена другая контакт-деталь контакта электрической цепи управления.This object is achieved by the fact 20 that the emission correcting sensor device is provided with conical gear wheels, one of which is connected with the friction wheel mated with metal- ¹ lokonstruktsiey boom and screw pair, the screw of which is connected with the other bevel gear and on the nut screw pair is installed other contact - contact detail of the electrical control circuit.

На фиг.1 изображен ограничитель грузоподъемности, общий вид; на фиг.2 - разрез А-А на фиг.1.Figure 1 shows the load limiter, General view; figure 2 is a section aa in figure 1.

Ограничитель грузоподъемности грузовой каретки стрелового крана содержит подпружиненный рычаг 1, соединенный с грузовым канатом 2 и связанный с одной контакт-деталью 3 контакта электрической цепи управления, другая контакт-деталь 4 которого установлена на гайке 5 винтовой пары. Корректирующее устройство датчика вылета содержит фрикционное колесо 6, сопряженное с металлоконструкцией 7 стрелы и соединенное через редуктор 8 с одной конической шестерней 9. Другая коническая шееThe load limiter of the load carriage of the jib crane contains a spring-loaded lever 1 connected to the cargo cable 2 and connected to one contact part 3 of the contact of the electrical control circuit, another contact part 4 of which is mounted on the nut 5 of the screw pair. Correction device departure sensor contains a friction wheel 6, coupled with the metal structure 7 of the boom and connected through a gearbox 8 with one bevel gear 9. Another bevel neck

945057 4 терня 10 сопряжена с винтом 11 винтовой пары.945057 4 thorns 10 are associated with a screw 11 of a screw pair.

Каретка 12 перемещается по металлоконструкции 7 стрелы. Гайка 5 зафиксирована от разворота и может $ перемещаться вдоль винта 11.The carriage 12 moves along the metal structure 7 of the boom. The nut 5 is fixed from a turn and can $ move along the screw 11.

Ограничитель грузоподъемности грузовой каретки стрелового крана работ тает следующим образом.The load limiter of the load carriage of the jib crane works as follows.

При подъеме груза подпружиненный ю рычаг 1 поворачивается на некоторый угол, при этом контакт-деталь 3 перемещается по направлению к контактдетали 4. Положение последней зависит от расположения каретки 12 на 15 металлоконструкции 7 стрелы крана, причем при перемещении каретки 12 к оголовку стрелы вращается колесо 6 ' и через редуктор 8 и шестерни 9 вращается винт 11, при этом гайка 5 пет эд ремещается и контакт-деталь 4 приближается к контакт-детали 3« При движении каретки 12 к башне крана контакт-датель 4 удаляется от контакт-детали 3‘. Таким образом, кон- 25 такт-детали 3 и 4 соприкасаются в зависимости от положения каретки 12 при разных усилиях в канате 2. Контакт электрической цепи включен в цепь привода крана и в цепь сигна- зо лизации.When lifting the load, the spring-loaded lever 1 is rotated by a certain angle, while the contact part 3 moves towards the contact part 4. The position of the latter depends on the location of the carriage 12 by 15 of the metal structure 7 of the crane arm, and when the carriage 12 is moved to the boom head, the wheel 6 'and a screw 11 rotates through the gearbox 8 and gear 9, while the nut 5 ed moves and the contact part 4 approaches the contact part 3 “When the carriage 12 moves to the crane tower, the contact-giver 4 moves away from the contact part 3'. Thus, the contact parts 3 and 4 are in contact, depending on the position of the carriage 12 at different forces in the cable 2. The contact of the electrical circuit is included in the crane drive circuit and in the signaling circuit.

Ограничитель грузоподъемности грузовой каретки стрелового крана бла·? годаря кинематической связи между фрикционным колесом, сопряженным с металлоконструкцией стрелы? и контакт-деталью контакта электрической цепи, имеет сравнительно простую конструкцию.The limiter of loading capacity of the load carriage of the jib crane · ·? due to the kinematic connection between the friction wheel associated with the metal structure of the boom? and the contact detail of the contact of the electrical circuit has a relatively simple design.

Claims

The invention relates to lifting equipment, namely, devices for limiting the lifting capacity of the boom crane. The load-carrying capacity limiter of the cargo carriage of the jib crane is known, which contains a spring-loaded lever connected to the cargo cable and connected to one contact-detail of the contact of the control circuit and the departure sensor made corrective device made with the friction wheel 11. A disadvantage of the known limiter is the relatively elephant design . The purpose of the invention is to simplify the design of the load limiter. This goal is achieved by adjusting the outreach sensor device with conical gears, one of which is associated with a friction wheel connected to the boom metal structure and a screw pair, the screw of which is connected to the other bevel gear, and the screw pair is mounted on the nut. other contact-contact contact of the control circuit. Figure 1 shows the load limiter, a general view; figure 2 - section aa in figure 1. The load limiter of the cargo carriage of the jib crane contains a spring-loaded lever 1 connected to the cargo cable 2 and connected to one contact detail 3 of the control circuit contact, the other contact detail C of which is installed on the nut 5 of the screw pair. The outreach sensor correction device contains a friction wheel 6 coupled to the boom metalwork 7 and connected via a gearbox 8 to one bevel gear 9. Another tapered neck 3Sk turn 10 is coupled to screw 11 of the screw pair. The carriage 12 is moved along the metalwork 7 of the boom. The nut 5 is fixed against turning and can move along the screw 11. The loading capacity limiter of the cargo carriage of the jib crane works thaws as follows. When the load is lifted, the spring-loaded lever 1 rotates through a certain angle, while the contact-part 3 moves towards the contact details k. The position of the latter depends on the positioning of the carriage 12 on the metalwork 7 of the crane boom, and when the carriage 12 moves to the tip of the boom, the wheel 6 rotates and the gear 11 rotates through the gearbox 8 and gear 9, and the nut 5 peg moves and the contact part approaches the contact part 3. When the carriage 12 moves towards the crane tower, the contact sensor moves away from the contact part 3. Thus, the contact parts 3 and "are in contact, depending on the position of the carriage 12, at different cable forces

2. The contact of the electrical circuit is included in the crane drive circuit and in the alarm circuit. The load limiter of the cargo carriage of the jib crane of the kinematic connection between the friction wheel, coupled with the boom metalwork and the contact part of the electric tset contact, has a relatively simple design. Claim of the invention A load carriage limiter of a cargo carriage of a jib crane containing a spring-loaded lever connected to a cargo cable and associated with one contact-detail of an electrical control contact, a correction device for a departure sensor made with a friction wheel, characterized in that, in order to simplify the design, the offset sensor is fitted with bevel gears, one of which is associated with a friction wheel associated with the boom metalwork and a helical a pair, the screw of which is connected to the other bevel gear, and on the nut of the screw pair is installed another contact-part of the contact of the electric control circuit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 173902, cl. В 66 С 23/90, 03.21.63 (prototype).