SU867848A1

SU867848A1 - Clamshell

Info

Publication number: SU867848A1
Application number: SU792814984A
Authority: SU
Inventors: Роман Наумович Яхнин; Валерий Николаевич Фонталин
Original assignee: За витель
Priority date: 1979-09-07
Filing date: 1979-09-07
Publication date: 1981-09-30

Description

(54) ГРЕЙФЕР(54) GRAYFER

1one

Изобретение относитс к подъемно-транс портной технике, в частности к грейферам. Известен грейфер, содержащий верхнюю и нижнюю траверсы, челюсти, шарнирно прикрепленные к нижней траверсе и посредством т г к верхней, размещенные з нижней и верхней траверсах узлы блоков, соединенные между собой замыкающим канатом 1.FIELD OF THE INVENTION The invention relates to a lifting and transport equipment, in particular to grabs. A grab is known that contains an upper and lower traverse, jaws that are hingedly attached to the lower traverse and, by means of a grating to the upper traverse, are placed at the lower and upper traverses the knots of the blocks interconnected by the locking cable 1.

Недостатком известного грейфера вл етс ненадежное крепление узлов блоков к металлоконструкции верхней и нижней траверс, частый обрыв кронштейнов и щек, |Q что приводит к аварийным остановкам рудного крана и многократным ремонтам.A disadvantage of the known grab is the unreliable fastening of the units of the blocks to the metal structures of the upper and lower traverse, frequent breakage of the brackets and cheeks, | Q, which leads to an emergency stop of the ore crane and repeated repairs.

Цель изобретени - повышение надежности .The purpose of the invention is to increase reliability.

Поставленна цель достигаетс тем, что is грейфер снабжен закрепленными на наружных щеках каждого узла блоков кольцами, торцы которых выполнены с проточкой, и вертикальными т гами, нижней конец каждой из которых охватывает кольцо, а верхний посредством клинового соединени за: М креплен в траверсе.The goal is achieved by the fact that the grapple is provided with rings fixed on the outer cheeks of each block node, the ends of which are made with a groove, and vertical drafts, the lower end of each of which covers the ring, and the upper one by means of a wedge connection for: M is fixed in the traverse.

На фиг. 1 изображен грейфер, общий вид; на фиг. 2 -узел I на фиг. 1; на фиг. 3 -FIG. 1 shows a grab, general view; in fig. 2 is node I in FIG. one; in fig. 3 -

вид А на фиг. 2; на фиг. 4 - разрез Б-Б на фиг. 3; на фиг.5 - разрез В-В на фиг. 4.view A in FIG. 2; in fig. 4 shows a section BB in FIG. 3; FIG. 5 is a sectional view BB in FIG. four.

Claims

The grab contains jaws 1 and 2, pivotally connected by links 3 and 4, which are made in the form of frames, with the upper crosshead 5. The jaws are pivotally connected to the lower crossbar 6. In the upper and lower crossbars, the units of blocks 7 are installed, in the stream x of which is stock locking rope 8. The blocks rotate on rolling bearings 9, the inner race of which is mounted on axis 10. Axle 10 rests on cylindrical surfaces made in the outer cheeks 11 and inner cheeks 12. The cheeks 11 and 12 are attached to the brackets 13 of the traverse metalwork by means of ltsev cheeks 14. At node 11 the upper and lower blocks are fixed on both sides of the ring 15 with protochkoyNa end surface of each. The glands 16 are mounted on the rings. The cylindrical hole in the cylinder is larger than the outer diameter of the ring. At the upper end of the tie rod there is a rectangular groove 17, in which the wedges 18 and 19 are placed for fastening the tie rods to the steel structures. Beams 20 are installed on the metal structures of the upper and lower cross-beams on the outside, which are the support for fastening the wedges t. The direction of the beams coincides with the axes of the block assemblies. The upper traverse is fixed on the lift cables 21. The assembly of the unit assemblies to the metal structures of the upper and lower traverse is performed with the fingers 14, passed through cylindrical holes made in the cheeks 11 and 12 and the brackets 13. When lowering the closing ropes 8, the jaws 1 and 2 are diverted side and grapple exposed. The lifting ropes 21 are still at this time. When moving the grab down the speed of the lifting and closing ropes are the same. Under the weight of the grapple, the jaws are recessed into the material. Then the release ropes begin to wind on the drum, the jaws are closed, scooping material. After the jaws of the grapple are closed, the lifting and closing ropes wind off the drum at the same speed. To unload the jaw, the grapple opens and the material is poured out. Installing an additional support for securing units of the blocks to the metalwork of the traverse eliminates block breaks, breaks in the brackets and cheeks, and emergency crane downtime associated with replacing the gripping body. Claims of the invention: A grab containing upper and lower traverse, jaws, hinged to the lower traverse and, through the t to the upper, placed in the lower and upper traverse blocks of blocks, interconnected by a locking cable and having outer and inner cheeks, characterized in that in order to increase reliability, it is provided with rings fixed on the outer cheeks of each node of the blocks, the ends of which are made with a groove, and vertical drafts, the lower end of each of which covers the ring and the upper one compound V is fixed in the traverse. Sources of information taken into account during the examination 1. Tauber B. A. Grab mechanisms. M., 1960, p. 18, fig. 10 (prototype).

Type A

cpui.3

ZZZZZZZl

(Reg. 5