SU855125A1 - Apparatus for working trenches - Google Patents

Description

(54) DEVICE FOR THE DEVELOPMENT OF TRANS.

one

The invention relates to the construction of buried structures in the manner "wall in the ground" and relates to equipment for trenching.

A device for developing trenches is known, including a two-jaw grab on a cable suspension bracket 1.

The device has insufficient force-cutting for dense rocks and, as a result of this, low productivity.

The closest in terms of technical sushi ness and the result achieved to the present invention is a device, including its grapple on a rigid rod moving in guide 2.

The disadvantage of such a device is low productivity due to the insufficient mass of the grapple with the rod.

The purpose of the invention. An increase in device performance.

The goal is achieved by the fact that the known device, including a grapple, mounted on a rigid rod, moving in a guideway, is equipped with a bar clamping mechanism, made in the form of levers, hinged on directions and connected between

by means of a power cylinder, in the middle part of which the levers have clamping cams and are installed with the possibility of interaction with the rod, while the clamping cams are fixed on the levers by means of spherical supports.

FIG. 1 shows a general view of a device for developing trenches; in fig. 2 section A-A in FIG. one.

The device contains a base crane 1, to the axis of the head blocks of the boom 2 of which fO the guide 3 box section is fixed, fixed with a strut 4. Inside the guide 3, shank 5 with a hydraulic grab 6 is placed. The rod is hung on the main winch of the main crane. In the lower part of the guide, a rod clamping mechanism 7 is installed, consisting of two levers 8, a power cylinder 9, and cams 10 on spherical bearings 11.

The device works as follows.

20

To develop a trench, the rod 5 with the grapple 6 is lowered onto the ground. Then the hydraulic cylinder 9 clamps the cams 10 rod 5, connecting it with the guide 3

Claims (2)

Claim 1. A device for developing trenches, including a grab mounted on a rigid rod moving in the guide, characterized in that, in order to increase the productivity of the device, it is equipped with a rod clamp mechanism made in the form of levers pivotally mounted on a guide and interconnected by means of a power cylinder, and in the middle part of the levers have clamping cams mounted with the possibility of interaction with the rod. 2. The device according to π. 1, characterized in that the clamping cams are fixed to the levers by means of spherical bearings. Sources of information taken into account during the examination 1. Smorodinov M. I. Fedorov B. S. The device of foundations and structures using the “wall in soil” method. M., Stroyizdat, 1976, p. 29, fig. 8. 2. Overview, "Equipment for the development of excavations by the method of" wall in soil ", M., TSNIITEstroymash., 1978 p. 45 pic. 19. A ~ A