RU2772847C1 - Apparatus for ensuring stability of machines - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention relates to hoisting, construction machines, in particular, to self-propelled cranes, and other vehicles operating on low-bearing soils. The machine comprises a base tractor with outriggers, a frame of the base tractor, a frame with a counterweight and a rotary platform with working equipment located thereon. Guides are made in the lower part of the frame, configured to move the frame along the guiding beams of the frame of the base tractor. The shape of the guides of the frame corresponds to the shape of the guides of the frame with a rotary platform.

EFFECT: stability of the machine is increased by 3…4 times without changing the boom reach.

1 cl, 2 dwg

Description

The field of technology to which the invention belongs

The invention relates to lifting, construction machines, in particular to mobile cranes, as well as to other vehicles operating on weakly bearing soils.

State of the art

A device for ensuring the stability of machines on weakly bearing soils is known, containing a base tractor with outriggers, a base tractor frame, a frame with a turntable, with a counterweight and working equipment located on it. (Fundamentals of the theory, calculation and design of construction and road machines: Textbook for technical schools / L.A. Goberman. M .: "Engineering", 1988. - 464 p., (p. 340)).

A disadvantage of the known designs is the limitation of the carrying capacity (efforts) of the machines due to stability violations during operation, when the value of the overturning moment exceeds the value of the holding moment when the center of gravity is shifted during operation.

The closest technical solution is a device, including cranes, including shields (platings) installed under outriggers (1. Kashina S.G. Ensuring the safety of construction and installation works. Stability of cranes: Methodological instructions for practical exercises / Comp., DK Sharafutdinov Kazan: Publishing house of the Kazan State University of Architecture and Civil Engineering, 2012. - 39 pp. 2. Analysis of research methods and evaluation of the sustainability of self-propelled jib cranes when working on weakly bearing soils / PA Grigoriev, V V. Krylov // Hoisting and transport, construction, road, track machines and robotic complexes. Collection of reports of the XXIV Moscow International Interuniversity Scientific and Technical Conference of students, undergraduates, graduate students and young scientists. - M., 2020. - P. 53- 55. 3. Patent 2723503 Russian Federation, MPK7 V66S 23/78, V66S 23/72, V66S 23/62, V66S 23/18. soils / P.A. Grigoriev, V.V. Krylov, L.A. Sladkova; applicant and patent holder Federal State Autonomous Educational Institution of Higher Education "Russian University of Transport" (FGAOU VO RUT (MIIT), RUT (MIIT). - No. 2019121342; application 07/08/2019; publ.: 06/11/2020, Bull. No. 17. - 9 s.).

The disadvantage of this device is the low culture of production and loss of time to install shields.

Disclosure of invention

The essential features of the claimed invention coincide with the following set of features of the prototype: in the lower part of the frame, guides are made with the possibility of moving the frame along the guide beams of the frame of the base tractor, and the shape of the frame guides corresponds to the shape of the frame guides with a turntable.

The invention is aimed at ensuring the stability of the machine during operation.

The machine contains a base tractor with outriggers, a frame of the base tractor, a frame with a counterweight located on it and a turntable with working equipment, characterized in that guides are made in the lower part of the frame with the possibility of moving the frame along the guide beams of the frame of the base tractor. The shape of the frame guides corresponds to the shape of the turntable frame guides.

The essence of the invention is explained by the drawings:

Brief description of the drawings

in FIG. 1 is a front view of a wheeled jib crane in working position;

in FIG. 2 - a device for moving a frame with a turntable along the frame guides of the base tractor, section A-A in Fig. one.

Implementation of the invention

The machine, for example, a jib crane (Fig. 1), contains a base tractor with outriggers 1, a base tractor frame 2, a frame 3 with a counterweight 4 located on it and a turntable with working equipment 5. In the lower part of the frame 3 (Fig. 2 ) guides 6 are made with the possibility of moving the frame along the guide beams 7 of the frame of the base tractor 2, and the shape of the guides 7 of the frame 2 corresponds to the shape of the guides 6 of the frame 3 with a turntable.

The device works as follows. On a machine containing a base tractor with outriggers 1, a base tractor frame 2, a frame 3 with a counterweight 4 located on it and a turntable with working equipment 5, to ensure stability, the lower part of the frame 3 with guides 6 is moved along the guide beams 7 of the frame of the base tractor 2 approaching or moving away from the machine's center of gravity. To ensure a strong connection and prevent jamming of the frames between themselves, the shape of the guides 7 of the frame 2 corresponds to the shape of the guides 6 of the frame 3 with a turntable.

The proposed technical solution makes it possible to ensure the stability of the machine by 3...4 times without changing the boom reach.

Claims (1)

A machine containing a base tractor with outriggers (1), a frame of the base tractor (2), a frame (3) with a counterweight (4) located on it and a turntable with working equipment (5), characterized in that in the lower part of the frame ( 3) guides (6) are made with the possibility of moving the frame (3) along the guide beams (7) of the frame of the base tractor (2), and the shape of the guides (7) of the frame (2) corresponds to the shape of the guides (6) of the frame (3) with a turntable .

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