RU2520307C1 - Working equipment of single-bucket excavator - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: working equipment of a single-bucket excavator includes a beam, a handle, a limiter made from a metal bar, a bucket on which a puncheon is fixed, which represents a hydraulic cylinder having a wedge-shaped working tip on the stock end, which performs back and forth movements perpendicular to the bucket digging trajectory and is intended for mechanised removal of soil under a pipeline, as well as strip foundations.

EFFECT: enlarging technological capabilities of an excavator, which are used at repair of a pipeline.

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Description

The invention relates to earthmoving machines, and in particular to the working equipment of single bucket hydraulic excavators designed to tear off pipelines during repair.

Known bucket hydraulic excavator [Berkman I.L., Raneev A.V., Reish A.K. Single bucket construction excavators: Textbook. for environments Vocational school - 3rd ed., Revised. and add. - M .: Higher. school, 1986. - 272 p.: ill. - (Vocational education) p. 78-82], the working equipment of which consists of an arrow, a handle with a bucket and hydraulic control cylinders. The boom with the handle and the bucket extended forward is lowered under the pressure of the fluid supplied to the boom hydraulic cylinders. Digging is done by turning the bucket and handle.

However, the known hydraulic excavator has disadvantages: the impossibility of removing soil under the pipeline, as well as limited technological capabilities when performing earthworks.

Closest to the proposed invention is a device for digging a pipeline [RF Patent, No. 2170307, IPC ⁷ E02F 5/10, DEVICE FOR ADDING PIPELINES / Khasanov A.Kh., Kulgildin SG, Sammatov R.L.]. The device contains a single bucket excavator mounted to the working equipment of the excavator working tool body. The tool body is mounted on a bucket of work equipment. The housing orientation means is made in the form of a spring-loaded L-shaped frame attached to the handle of the working equipment, bearing a pointer in the lower part. A sighting arrow is attached to the platform or to the cab of the excavator, and a bar with divisions is attached to its frame opposite the sighting arrow.

However, the disadvantage of this equipment is the design complexity.

The aim of the invention is to expand the technological capabilities of the excavator used in the repair of the pipeline, providing the ability to mechanically remove soil under the pipeline.

This technical result is achieved by the fact that in the known working equipment of a single-bucket excavator, including a working tool body mounted on a bucket of working equipment, the punch is mounted on the bucket of a single-bucket excavator and consists of a hydraulic cylinder, on the rod of which there is a wedge-shaped working tip, two spring-loaded ones are installed in its internal cavity additional faces, there is also a limiter made of a metal rail.

The invention is illustrated by the following description and the accompanying drawings, FIG. 1 shows the working equipment of a single bucket excavator, FIG. 2 shows the construction of working equipment of a single bucket excavator (side view), FIG. 3 shows a wedge-shaped tip (longitudinal section), FIG. 4 - construction of working equipment for a single-bucket excavator (top view), FIG. 5 is an example of soil removal under the pipeline (front view).

The working equipment of a single-bucket excavator contains an arrow 1, a handle 2, a handle control hydraulic cylinder 3, a hinged movement limiter 4 fixed to the handle, driven by a hydraulic cylinder 5, a bucket 6, a bucket control hydraulic cylinder 7, two brackets 8 are installed on the outside of the bucket, which are designed for the installation of a punch 9 on them, consisting of a hydraulic cylinder 10 on the rod of which a wedge-shaped working tip 11 is fixed, in the inner cavity of the wedge-shaped working tip 11 there are two nye face 12, which have a spring mechanism 13 that allows the hole to expand the work already done.

The work is as follows.

Excavation of the soil is carried out by an excavator above the upper part of the pipeline, and also from the sides below the lower point of the generating point of the pipeline by turning the handle 2, the hydraulic cylinder for controlling the handle 3 and the bucket 6, the hydraulic cylinder for controlling the bucket 7, then remove the soil under the pipeline using a punch 9. For this, place the handle 2 of the excavator across the pipeline and lowered to the upper point of the pipeline hinged travel limiter 4 hydraulic cylinder 5, then produce a working fluid to the hydraulic cylinder 10 in e a piston chamber, resulting in movement of the rod with the working wedge tip mounted thereon 11. The spring mechanism 13 is located in the inner cavity of the working wedge-shaped tip 11 which allows face 12 to breed additional to the side and makes it possible to expand the borehole below a duct. When the working wedge-shaped tip 11 exits from the opposite side, the spring mechanism 13 spreads additional faces 12, then when the working fluid is supplied to the rod cavity of the hydraulic cylinder 10, the working wedge-shaped tip 11 moves in the opposite direction, expanding the already formed bore under the pipe with additional faces 12.

This embodiment of the device allows the mechanized method to remove soil under the pipeline, which increases the safety of excavation, as well as expanding the technological capabilities of the excavator.

Claims (1)

The working equipment of a single-bucket excavator, including the working tool case mounted on a bucket of working equipment, characterized in that the punch is mounted on the bucket of a single-bucket excavator and consists of a hydraulic cylinder, on the rod of which there is a wedge-shaped working tip, two spring-loaded additional faces are installed in its internal cavity, there is also limiter made of metal rail.

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