SU1413196A1 - Power shovel working equipment - Google Patents

Abstract

The invention relates to earthmoving machines and m, b. used in hydraulic systems of excavators to drive their working equipment. The purpose of the invention is to increase reliability. The hydraulic lines of communication consist of rigid pipelines (TP) 1-4, mounted on movable elements (PE) 8,9 and 11 of the working equipment with end fittings. At the same time TP 1-4 are interconnected by flexible Tit 15-17. TP 1-4 transfers the working medium to the hydraulic cylinders 6.7 and 10. At the same time, TP 2 and 3 you are: filled with the possibility of their longitudinal movement relative to PE 8 and 9. For this purpose, TP 2 and 3 are mounted in the form of links 20 attached to TP 2 and 3 by hinges 21 and 22. At the same time, HZ 10 moves PE 11, configuration of TP 17 changes. After the elastic properties of TP 17 are exhausted, TP 2 and 3 move by rotating links 20 around hinges 21 and 22 , At the same time, the configuration of TP 15 and 56 changes. an equal condition for the operation of the terminating fittings of the movable and fixed ends of the TP 17 is created. At the same time, the HZ 6 moves the PE 8, the configuration of the TP 55 changes. the hinges 21 and 22. At the same time, the configuration of the transformer substations 16 and 17 is changed, keeping the angle of displacement of the axis of the transformer transformer 15 and excluding the appearance of shear forces in the fixture. When PE 9 is moved, equal conditions for the fitting reinforcement of the movable and fixed ends of the TP 16. 1, 3, p. f-ly, 1 ill.

Description

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The invention relates to earthmoving machines and can be used in hydraulic systems of excavators to drive their working equipment.

The purpose of the invention is to improve the reliability of the working equipment.

The drawing shows the working equipment of the excavator.

The working equipment of the excavator contains hydraulic lines of communication consisting of consecutive rigid pipelines 4 for transferring the working medium from the fixed part 5 of the excavator through the moving hydraulic cylinders 6 and 7 to the movable elements 8 and 9 of the working equipment to the moving hydraulic cylinder 10 moving the mobile Element P. At the locations of the hinges 12, 13 and 14 connecting the movable elements, rigid pipes are connected by means of end fittings to flexible pipes 15, 16 and 17. Rigid e pipes 1 and 4 are respectively fixed to the fixed portion 5 of the excavator and to the movable hydraulic cylinder 10 posred- stvom fixed supports 18 and 19. Rigid pipes 2 and 3 are arranged to be movable relative to the movable members 8 and 9 in longitudinal direction. For this, each of the supports for fastening the rigid pipes 2 and 3 is made in the form of a link 20 attached by means of hinges 21 and 22 to the rigid pipe and to the corresponding component of the working equipment.

When element I1 is moved by a movable hydraulic cylinder 1 O, the flexible pipe configuration 17 changes. After the elastic properties of this pipeline are exhausted, rigid pipes 2 and 3 are moved by rotating the links 20 around the hinges 21 and 22 in the direction of movement of the rigid pipe 4. Simultaneously, the flexible configuration changes pipelines 15 and 16. This achieves the creation of equal conditions

Bots of the fixing armature of the mobile and fixed ends of the flexible pipeline 17.

When moving the movable element 8 relative to the fixed part

d

S 0 5 0 s 0

0

five

The 5 excavator by means of the hydraulic cylinder 6 changes the configuration of the flexible pipe 15. When the elastic properties of this pipeline are exhausted, its movable end with further rotation of the movable element 8 remains in place, and the rigid pipes 2 and 3 begin to move by rotating the links 20 in the hinges 21 and 22 simultaneously there is a change in the configurations of flexible pipelines 16 and 17). This movement takes place in the opposite direction to that of the movable element 8, for example, when the length of the hydraulic cylinder 6 decreases, in the direction of approach of the moving and stationary ends of the flexible pipe 15).

Thereby, the angle of displacement of the axis of the flexible pipe 15 relative to the axis of the fixing reinforcement of its fixed end is maintained within the tolerance for the selected size of the flexible tubing, thereby eliminating the possibility of axial shear forces in the fixture.

Similarly, when moving the movable element 9 relative to the currently stationary element 8 by means of the movable hydraulic cylinder 7, either the rigid pipe 2 moves at the time the elastic properties of the flexible pipe 16 are exhausted (the flexible pipe 15 changes simultaneously) or the rigid pipe 3 simultaneously the configuration of the flexible conduit 17), or both, is changed. Thereby, equal conditions for the fixing armature of the movable and fixed ends of the flexible pipe 16 are achieved.

Claims (2)

Thus, in the pipeline line of the hydraulic system with movable hydraulic cylinders, equal working conditions are achieved for the fixing armature of the movable and fixed ends of the Flexible Piping 15, 16 and 17, which results in a reliable operation of the hydraulic line and the entire working equipment of the excavator as a whole. Invention Formula one . Excavator working equipment containing drive hydraulic cylinders 3 1413196 movable elements and hydrolines of sv-pipelines are made with the possibility of consisting of rigid pipelines of longitudinal movement of the vessels fixed on the mobile ice-sheet relative to the movable elements of the working equipment and elements of the working equipment, interconnected by flexible pipes 2. The equipment of the excavator by wires, characterized by claim 1, characterized in that, in order to increase the reliability of fastening of rigid pipelines of its operation, the fastening of rigid connectors is made in the form of hinged links.