SU1303875A1 - Bench for studying the working members of earth-moving machines - Google Patents

Abstract

The invention relates to studies of earthmoving equipment and allows to expand the field of study. The bench contains a ground container mounted on the base 1. Along it on opposite sides are external and internal longitudinal guide beams (MO) 8. They are mounted on supporting axis Rollers (OK) 7 of the strain gauge trolley 2 with the control system 10. One pair of OK 7 is located on the outer beams, the other on the inner beams. The ends of the PN 8 are connected to the base by means of vertically arranged hydraulic cylinders 9 connected to the control system 10. It has control valves, the spools of which interact with each other through a programmed control mechanism made in the form of a drive shaft with rigidly fixed replaceable cam disks. Each OK 1 is moved by a separate MON 8, rotating on the shaft. Copy disks set a variable relief of the ground, controlled by means of mechanical connections of hydraulic distributors, and move along the PN 8 vertically. Copy disks can be replaced by others that provide an imitation of another relief. 1 hp f-ly, 3 ill. § (Л с со р со Cх | ел

Description

one

The invention relates to stands for examining the working bodies of earth-moving machines, and more specifically, to stationary stands.

The purpose of the invention is to expand the scope of research.

FIG. 1 shows a stand, a general view; FIG. 2 - the same, top view; in fig. 3 - diagram of the software mechanism.

The test bench for examining the working bodies of the earthmoving machinery contains an earth container 1 with a strain gauge carriage 2, to which, by means of strain gauge links 3, a model of the working tool 4 is fixed. The strain gauge trolley 2 is mounted on a separate longitudinal guide rail 8, which is mounted on two hydraulic cylinders 9 connected to the drive station 10 (Fig. 1).

The drive station (control system) 10 (FIG. 2) is equipped with hydraulic distributors 11 with spools that are connected by mechanical links 12, for example, pivoting levers of conventional design, with control devices synchronized with each other, forming a programmed control mechanism and made in the form copier disks 13 mounted on the shaft 14 and rigidly fixed to it with screws 15. The shaft 14 is connected to the drive electromotor 16 via a worm gearbox 17. The hydraulic distributors 11 are connected in the usual way using and pressure 18 and drain 19 lines with a pump 20 and a filter 21, equipped with a safety valve 22 and mounted) on tank 23. Hydraulic distributors 11 are made three-way with two inverse flow channels in the extreme positions and locked channels in the middle neutral position.

Stand for the study of the working bodies of earthmoving machines works as follows.

The tensometric trolley 2 is set in motion by an electric motor.

13038752

the support wheel 7 of the strain gauge car 2 moves along a separate longitudinal guide 8. The copier disks 13 set the variable relief of the excavated soil due to the fact that, rotating on the shaft 14, are controlled by mechanical links 12 of the hydraulic distributors 11 hydraulic cylinders 9 and move along vertical

0 longitudinal guides 8. Copier discs 13 are fixed on the shaft 14 with screws 15 and therefore can be easily replaced by others, providing an imitation of a different relief developed by the ground.

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Claims (2)

1. Stand for the study of the working bodies of earthmoving machines, including a ground container mounted on the base with longitudinal guides arranged on opposite sides, on which support rollers of a strain gauge trolley with a drive station and a control system with hydraulic cylinders and hydraulic distributors are installed, about 30 L and that with, In order to expand the study area, the longitudinal guides are made of pairs of parallel and parallel external and internal beams, the ends 35 of which are connected to the base by means of additional vertically arranged hydraulic cylinders, which are hydraulically connected to the control system by means of additional: 40 distributors whose spools are interoperable by means of a software control mechanism, with one pair of coaxial bearing The 45 rollers of the strain gauge trolley are located on the outer beams, and the friend on the inner ones. 50 55 2. Stand according to claim 1, characterized in that the program mechanism is made in the form of a drive shaft with rigidly mounted replaceable copying discs located with: the ability to interact with spools of additional hydraulic distribution valve 5 through a worm gear 6. Each engine. Invention Formula 1. Stand for the study of the working bodies of earth-moving machines, including a ground container mounted on the base with longitudinal guides arranged along opposite sides, on which support rollers of a strain gauge trolley with a drive station and a control system with hydraulic cylinders and hydraulic distributors are installed. h and y n and so that with In order to expand the study area, the longitudinal guides are made of pairs of parallel and parallel external and internal beams, the ends which are connected to the base by means of additional vertically arranged hydraulic cylinders, which are hydraulically connected to the control system by means of additionally: valves, spools of which are interoperable by means of a programmed control mechanism, with one pair of coaxial bearing The rollers of the strain gauge trolley are located on the outer beams, and the other - on the inner ones. 50 55 2. The stand according to claim 1, characterized in that the program mechanism is made in the form of a drive shaft with rigidly mounted replaceable copier disks located with: the ability to interact with the spools of additional hydraulic distribution systems 5 I