SU1322976A3 - Crane - Google Patents

Abstract

The invention relates to a crane which can be mounted on a vehicle and can be folded up from the operating position into a compact position for transport. The crane comprises a two-part column (8, 9) mounted on a foot (1) and having a joint. A lifting cylinder (6) is attached to the bottom part (9) of the column in an articulated manner. To lock the lifting cylinder (6) with regard to the top part (8) of the column in the operating or transport position of the crane, two steering levers (18, 20), which are attached to one another by the pivoting spindle (15) of the lifting cylinder (6) and are both provided with a stop (21, 22) against the top part (8) of the column, and counterstops (23, 25, 24, 26) for the operating or transport position on the top part (8) of the column are used. The joint is supported on four surfaces in both the operating and transport position, as a result of which it can advantageously absorb the loads directed towards it. …<IMAGE>…

Description

This invention relates to a lifting and handling machinery, namely, cranes,

The purpose of the invention is to improve the reliability of operation of the crane.

Fig. 1 shows a crane with a turning boom in the operating position; on -fig. 2 crane, stage c1; lads before the final transport position; in fig. 3 - the same, in the transport position; in fig. 4 - rack hinge, locked in the working position; figure 5 - the same, on the opposite side; in fig. 6 to

Each p1, gchagov is carried out by stoppers 19 installed in guides 20.

The device works as follows.

Levers 6 and 7, provided with shoulders, interact with counter-grooves 10, made on the upper part 3 of the rack, in the position of the crane shown in FIG. 1, 2, 4, 5 and 8, and in the position shown in FIG. 3, 6 and 7, interact with the grooves II, made on the rack. When the crane is in the working position, the blocking can be strengthened, with the stand supporting joint, blocked in the transport using the stoppers 19, in the Burti port position; in fig. 7 - the same from the pro-lateral side; on Fig hinge, locked in the working position, the axial section.

The crane contains a base 1, a two-piece hinged rack, made of the bottom 2 and top 3 parts, mounted on the base 1, the stem 4, hingedly attached to the upper part 3 of the stand, the lifting cylinder 5, one end hingedly attached to the edge 4, and the other to the lower part 2 of the rack, and means for locking the lift cylinder relative to the upper part of the rack in the working and transport positions, containing two hinged levers 6 and 7, placed one on the outer sides of the rack and sitting, inna with each other and released The ribs 8 and 9 are filled with rims. The outer side of the rack is made with counter grooves 10 and 11 for the working and transport positions, while the mating contact surfaces of the shoulders of the hinged levers and the grooves of the rack sections are made in the form of self-locking wedge surfaces. The hinged levers are provided with holding springs 12 and 13.

The front cylinder 5 is rotated relative to the lower part 2 of the rack, supported by link 14, and the hollow shaft 15 (Fig. 8). Inside the hollow shaft 15, there is a pinch shaft 16, one end of which is connected to the hinge lever 6 provided with a gripper 17, and the other end thereof is connected to the hinge lever 7 through the pulley bushing 18, so that both hinge levers move together. Blocks

Each p1, gchagov is carried out by stoppers 19 installed in guides 20.

The device works as follows.

Levers 6 and 7, provided with shoulders, interact with counter-grooves 10, made on the upper part 3 of the rack, in the position of the crane shown in FIG. 1, 2, 4, 5 and 8, and in the position shown in FIG. 3, 6 and 7, interact with the grooves II, made on the rack. When the crane is in the working position, the blocking can be strengthened, eg, 20

25

thirty

35

40

The transport kicks are sized such that the arms of the arms abut against them when the upper part of the 3 pillars is inclined to the transport position, i.e. shoulders are also limiting inclined movement.

Claims (1)

1. A crane containing a base, a two-part hinge rack mounted on the base, a boom pivotally attached to the top of the rack, a lifting cylinder, one end hinged to the boom, and the other to the bottom of the rack, and means for locking the lift cylinder relative to the top parts of the stand in the working and transport positions, characterized in that, in order to increase the reliability of operation, the means for locking the lift cylinder comprises 45 two hinged levers placed one on the outer sides of the rack sections and connected to each other by means of a second hinge for fastening the lifting cylinder, both levers being made with ribs facing the outer side of the hinge, reciprocating for the worker and transport positions, with matching contact positions 50); the characteristics of the arms of the hinged levers and the notches of the sections of the rack are made in HPVie self-locking, of their wedge dimensions. 2, Crane pop. 1, different from 55 y and with the fact that the pivot arms are equipped with retaining springs. (puz.f (Reg. 2 9g.z FIG L 5 Phage.5 7 // / / / H / 2 u / / W Editor I. Shulla Compiled by M. Moskalets Tehred L. Serdyu1 ova Proofreader L. Pilipenko Order 2884/58 Circulation 720 Subscription VNISHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Proprietary printing company, Uzhgorod, Projecto st., 4 FIG. eight /