SU1631132A1

SU1631132A1 - Grab

Info

Publication number: SU1631132A1
Application number: SU884455559A
Authority: SU
Inventors: Виталий Викторович Богданов; Виктор Иванович Богданов; Эдуард Николаевич Богданов; Николай Иванович Богданов
Original assignee: Волгоградский инженерно-строительный институт
Priority date: 1988-07-05
Filing date: 1988-07-05
Publication date: 1991-02-28

Abstract

Изобретение относитс к землеройной технике и может быть использовано дл очистки облицованных каналов и лотков, дл разработки и зачистки траншей, дл выполнени погрузочных и подгребающих работ. Цель изобретени - повышение эффективности за счет пр молинейного движени челюстей и повышение надежности работы. Грейфер состоит из рамы 1, гидроцилиндров 4 и 13 управлени , челюстей 2 и 3, св занных между собой посредством пространственного шарнирного многоугольника. Последний включает шарнирные кривошипы (К) 7, шатуны (Ш) 8, рычаги (Р) 9 и т ги 10. Нижние концы К 7 соединены с корпусом гидроцилиндра 4, а верхние - с серединами Ш 8. Верхние концы III 8 соединены со штоками гидроцилиндров 4, а нижние - с концами Р 9. Свободные концы Р 9 соединены с концами т г 10. Другие концы т г 10 соединены с К 7 посредством шарниров, смещенных относительно продольных осей К 7. Длина Р 9 равна двум длинам К 7. Челюсти 2 и 3 шарнирно соединены с Р 9. Корпуса гидроцилиндров 13 шарнирно соединены с Р 9, а штоки - с челюст ми 2и 3. К Р 9 прикреплены ограничители 12 поворота челюстей. При перемещении штока гидроцилиндра К 7, Ш 8 и т ги 10 совершают сложное движение, а Р 9 - пр молинейно-поступательное . Челюсти 2 и 3, зафиксированные относительно ограничителей 12 посредством гидроцилиндров 13, сближаютс и очищают канал. Дл поворота челюстей используют гидроцилиндры 13. 3ил. (О (ЛThe invention relates to earthmoving equipment and can be used to clean lined canals and trays, to design and clean trenches, to perform loading and gathering operations. The purpose of the invention is to increase the efficiency due to the linear movement of the jaws and increase the reliability of operation. The grab consists of frame 1, hydraulic cylinders 4 and 13 of the control, jaws 2 and 3, interconnected by means of a spatial articulated polygon. The latter includes articulated cranks (C) 7, connecting rods (Ø) 8, levers (P) 9 and gi 10. The lower ends of K 7 are connected to the hydraulic cylinder body 4, and the upper ends are connected to the middle of Ø 8. The upper ends of III 8 are connected to the rods hydraulic cylinders 4, and the lower - with the ends of R 9. The free ends of R 9 are connected to the ends of t g 10. The other ends of t g 10 are connected to K 7 by means of hinges displaced relative to the longitudinal axes of K 7. The length of P 9 is equal to two lengths of K 7. Jaws 2 and 3 are pivotally connected to P 9. The shells of hydraulic cylinders 13 are pivotally connected to P 9, and the rods are connected to the jaws 2 and 3. K P 9 are attached limiters 12 jaw rotation. When moving the hydraulic cylinder rod K 7, W 8 and t of g 10, they make a complex movement, and R 9 - linear-translational. The jaws 2 and 3, fixed relative to the stops 12 by means of the hydraulic cylinders 13, draw together and clean the channel. Hydraulic cylinders 13 are used to rotate the jaws. 3il. (Oh (L

Description

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Claims

Claim

A grab, including a frame with a control and jaw hydraulic cylinder, interconnected by a spatial articulated polygon consisting of connecting rods, one ends of which are connected to each other, cranks, one ends of which are connected to the control hydraulic cylinder body, and the other to connecting rods, from articulated levers and from rods, characterized in that, in order to increase efficiency due to the rectilinear movement of the jaws and increase the reliability of operation, the hinge connecting the ends of the connecting rods to each other is placed on the rod of the control cylinder the joints, connecting rods and cranks are located in the middle of the rods, the length of each connecting rod is two lengths of each crank, one ends of the levers are connected to the free ends of the rods, some ends of the rods are connected to the free ends of the levers, and the other ends of the rods are connected to the cranks, at the hinges connecting the rods to the cranks are displaced relative to the hollows of which are pivotally connected to the levers, and the rods to the jaws, and jaw rotation limiters attached to the levers, and the jaws are pivotally

5 are connected to levers.

longitudinal axes of the cranks with the possibility of a linear movement of the levers when moving the rod of the control cylinder, and the grab is equipped with additional control cylinders,