SU1716000A1 - Bulldozer - Google Patents

Abstract

The invention relates to earthmovers and allows you to expand the operational capabilities of the bulldozer. The bulldozer contains the base machine, pushing the bars 8, blade and hydraulic drive. The blade is made of sections 1-3. The hydraulic drive includes hydraulic hydraulic bridges 6 and hydraulic cylinders (HZ) 5 for raising and lowering the blade and additional HZ 11. The first of HZ 11 is mounted on section 3 and connected to section 1, and the second HZ 11 - on section 1 and connected to section-2. The connections of section 1 with sections 2 and 3 are made in the form of guides 4 located on the lateral sides of sections 1-3. Through a three-position hydraulic valve (GR), the pressure and drain lines are connected to the working cavities (RP) of hydraulic races 6 and HZ 11. To distort the blade, the GR moves to the side. The opposite RPs of the hydraulic distributors 6 and HZ 11 communicate with each other. The opposing RPs of the hydraulic manifolds 6 are in communication with the pressure and discharge lines. In this case, sections 1-3 are displaced in guides 4 relative to each other. The lower corners of sections 1-3, you can develop solid ground. 2 hp ff, 5 ill. cl

Description

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- Compiled by A. Saveliev

Editor M.Kobyl nska Tehred M.MorgentalKorrektor M.Demchik

Order 588 Circulation: Subscription

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab.

Production and Publishing Combine Patent, Uzhgorod, Gagarin st., 101

1716000

107

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Claims (3)

Claim 1. The bulldozer, including the base machine, pushing the beams, a blade made of sections arranged sequentially along its length, the last of which are connected to the pushing beams, and the middle one is the last with the ability to move relative to them along the height of the blade, and a hydraulic control drive containing hydraulic rake , hydraulic cylinders for raising and lowering the blade and pressure and drain lines, characterized in that, in order to expand its operational capabilities, the hydraulic actuator is equipped with additionally inclined and parallel E hydraulic cylinders, the first iz.kotoryh mounted on the first end section of the blade and is connected with the middle section, and the second - the middle section to the blade and is connected to the second section at and trehpozi- 40 directional valve, through which the pressure and drain lines are connected to the working cavities of the hydraulic rake and additional hydraulic cylinders, while the connections of the middle section with the extreme are made in the form of guides located on the sides of the sections, and the three-position valve is made with the possibility of communication in each. one of the extreme positions of the pressure and drain lines with the same or with the same cavities of hydraulic racks, opposite the cavities of the same name with hydraulic racks with one of the cavities of the adjacent additional hydraulic cylinders and other unlike cavities of the latter. 2. The bulldozer according to claim 1, with the fact that the guides for connecting the sections of the blade are made in the form of cylindrical joints, and each section of the blade / connected to a section adjacent to it by means of a traction adjustable along the end with spherical end joints. 3. The bulldozer according to claim 2, characterized in that the adjustable traction is made in the form of a hydraulic cylinder. Fie 5