SU1189953A1 - Trenching apparatus - Google Patents

Abstract

A TRENCH FORMING DEVICE, including a base machine with an arrow and a winch, a rack mounted on the boom, a carriage with a working body moving along the stand by means of a winch rope, and a working body immersion mechanism, characterized in that, in order to increase the efficiency of trench formation in soils with boulder-pebble inclusions by compacting them in the ground, the carriage is equipped with horizontal guides, in which the working body is mounted with the possibility of movement, and the immersion mechanism is made in ide hydraulic cylinders and the working body housing has a front portion with a tapered knife blades, scharnirno mounted on the side portions of the wedge-shaped knife pivotally by means of additional hydraulic cylinders, and vibrators, the vibrators installed in the working body housing. (L s 00 co 00 00

Description

The invention relates to the field of construction and can be used to form trenches under a clay slurry in the construction of load-bearing and enclosing walls of underground structures erected using the wall-in-soil method, mainly for thin, deep impervious curtains to ensure the stability of the foundations of the structures.

The purpose of the invention is to increase the efficiency of trenching in soils with boulder-pebble inclusions by compacting them in the soil.

FIG. 1 shows a device for forming trenches, general view; in fig. 2, section A-A in FIG. 1 (with advanced working body); in fig. 3 shows section A-A in FIG. 1 (in the position of the carriage for movement in the vertical plane).

The trenching device includes a pile-driving unit based on an excavator i with a boom 2 and a pillar 3, which is lowered and lifted by a rope 4. Depending on the ground conditions, the spacing jack 5 creates additional rigidity to the pillar 3, which is assembled from two I-beams connected between a ribs 6 stiffness. The carriages 7 with rollers 8 are placed in the guides of the pillars 3 and are held in position by the rope 9. The rollers 8 serve to move the carriage in a vertical plane and are the supporting surface for transmitting force from the hydraulic cylinders 10 to the pillar 3. On the carriage 7 fastening the telescopic hydraulic cylinders 10, the hydraulic equipment 12 for creating pressure in the hydraulic system, and by means of the brackets 13 is mounted on. operating 14 bodies 15 of the working body 16. The body 15 of the working body 16 receives reciprocating movements along the guides 14 from the hydraulic cylinders 10, the rods of which are connected to the wedge-shaped knife 17.

The cutting part 18 is attached to the body 15 for excavation in the vertical direction. In the horizontal direction, the working body 16 receives from the telescopic hydraulic cylinders 10, and in the vertical direction, the effort to develop the soil is created by a winch of the base masking through the deflecting roller 19 of the cable. 20. To the side walls of the body 15 of the working body 16 vibrators 21 are attached. lateral

parts of the wedge-shaped knife 17 by means of hinges 22 secure the blades 23, controlled by hydraulic cylinders 24. The working position of the blades 23 is shown by a dotted line in FIG. 2. To limit the movement of the blades on the housing 15, limiters 25 are provided. The rack 3 in the lower part is equipped with a stop 26.

The device for forming trays works as follows.

The rack 3 is lowered into the pre-drilled well up to the design elevation and inserted into the ground to the depth of the stop 26. If necessary, additional rigidity is created by traversing the spacer hydraulic jack 5. Lowering the carriage 7 with the working member 16 along the guide slots of the rack 3 to start penetration. The telescopic hydraulic cylinders 10 are activated, the force from which is transmitted to the wedge-shaped knife 17 of the working member 16. The latter moves along the guides 14,

penetrates the soil and forms the walls of the trench to the width of the hull 15. Depending on the soil conditions, the walls of the trenches can be compacted with vibrators 21 or blades 23, which receive forces from the hydraulic cylinders 25. The blades 23, moving relative to the axis of the joints 22, stretch the trench . After the expansion stroke due to the return stroke of the hydraulic cylinders 24, the blades 23 are folded. Upon completion of the introduction of the working body 16 into the ground, the telescopic hydraulic cylinders 10 are reversed

the stroke and working member returns to the initial position (Fig. 3). The rope 20 moves the carriage downward for a stroke length equal to 0.9 parts of the height of the working body 16, and the process of its introduction into the ground is repeated. Such operations are performed to the design mark. Then the working body 16 together with the carriage 7 rope 9 is lifted to the surface. Rope 4 remove the stop 26 from the ground and move the device to a length equal to the course of the working body in the horizontal plane, after which continue the formation of a trench on the next ledge.

Aa

15 21 23

// iu

ZL / 23

/ yr

21

FIG. 2

Claims (1)

DEVICE FOR EDUCATION OF Trenches, including a base machine with an arrow and a winch, a rack fixed to the arrow, a carriage with a working body moving along the rack by means of a winch rope, and a working body immersion mechanism, characterized in that, in order to increase the efficiency of the formation of trenches in soils with boulder-pebble inclusions by compaction in the soil, the carriage is equipped with horizontal guides in which the working body is installed with the ability to move, while the immersion mechanism is made in the form of idrocylinders, and the body of the working body has in the front part a wedge-shaped knife with blades pivotally mounted on the lateral parts of the wedge-shaped knife with the possibility of rotation by means of additional hydraulic cylinders, and vibrators, and vibrators are installed in the body of the working body. Fig