SU787578A1 - Running gear of working member of soil-shifting machine - Google Patents

Description

I

This invention relates to undercarriage devices of working bodies of heavy trailed machines.

Known chassis device of the earthmoving machine, containing its frame, supports and drawbar 1.

It is also known to have a running gear of a working body of an earth-moving machine, for example, a rotary excavator, containing a frame, front and rear supports, and a drawbar for connecting the working body to the tractor 2.

The disadvantage of this undercarriage is the impossibility of maneuvering the working tool when reversing, since the wheels of the front axle are rotated through a system of levers using a drawbar pivotally attached to the center of the front axle and to the system of levers of steering wheels. When moving backwards, the force from the load shaft to the working body is transmitted through the drawbar, and since it is impossible to set the load gauge strictly along the axis of the drawbar, the front axle of the working body is tilted relative to the direction of movement. This makes further movement back impossible. Moving the working body

back in this case, wire., gc additional tons of slack with the help of cables attached to the frame of the working body. Consequently, the imperfection of the design of the connection of the undercarriage of the working body with a ton of gauge makes it difficult to maneuver the working body by the body during reversing and requires additional equipment and time.

The purpose of the invention is to ensure the maneuvering of the working body when the

10 course.

The goal is achieved by the fact that in the known undercarriage device of the working body, including the frame, the front and rear supports and the drawbar, connecting the undercarriage with a pull, the front support is equipped with a chain attached to it, each branch of which has a tension mechanism, and the drawbar has a shaft with an asterisk, a bend around the chain, and a latch for engaging with the shaft. Tension mechanism is made of

Claims (2)

2Q hydraulic cylinders with spring loaded, and the hydraulic cylinder cavity communicated with each other with the help of a crane. The shaft is made faceted, and the retainer is made in the form of a spring-loaded plug for engagement with the faces of the shaft. J In FIG. 1 shows the undercarriage, side view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 shows a section of a CC in FIG. 3; in fig. 5 is a diagram of the connection of the hydraulic cylinder chambers. The undercarriage with the working body 1 contains a frame 2, front and rear supports 3 and 4, which are connected with a drawbar 5 with the tongue 5. The forward support 3 of the undercarriage has a front axle 7 (Fig. 2 with a pair of wheels that are controlled with With the help of t 8., the front axle 7 is connected to the tongue additionally by means of chains 9 and sprockets 10 attached to it. In each branch of chains 9 there is a tensioning device consisting of a hydraulic cylinder 11 with a spring 12 and a crane 13 (Fig. 5). 10 are fixed on the drawbar 5 with the help of a vertical shaft 14. For cushioning beats When moving forward, the drawbar 5 has damping springs 15 and tug 16, having a flat fork 17 at the end, which serves to lock the shaft 14, which has edges 18 that interact with the fork 17. The undercarriage works as follows. moves the working body 1 by transmitting the force through the drawbar 5 (t gu 16 and springs 15) to the front axle 7 with a pair of wheels and t gami 8. The vertical shaft 14 is uncoupled and the sprockets 10 freely rotate on the shaft 14 ,. moving the chains 9. To tension the chains, each branch has a tensioning device, and when moving forward, the valve 13 of each of them is pre-opened and the springs 12 of the hydraulic cylinders 11 create tension on the branches. The working body is rotated by turning the wheels of the front support with the help of hooks 8. Before starting the movement of the working body, the valves of the 13 tensioning devices are closed back, thus separating the cavities of the hydraulic cylinders. Further, when moving 78 at the rear, the t 6 of the force transmits the force to the working body 5, while the heavy 16 moves back, locks the shaft 14 with the fork 17, on which the sprockets 10 are fixed and fixes them against rotation. As a result, the pivotal connection of the front axle with the gill turns into a rigid connection, which makes it possible to control the movement of the working element at the rear course. In this way, an additional connection between the working shaft of the tool and the front support allows for locking the front axle with respect to the drawbar during reverse, which in turn makes it possible to maneuver the working device during reverse. Claim 1. Arrangement of the working body of the earthmoving machine, comprising a frame, front and rear supports and a rant, characterized in that, in order to ensure the maneuverability of the working body during reversal, the front support is provided with ends attached to it The mechanism, and the tongue is equipped with a shaft with an asterisk, bending around the chain, and a clamp for interacting with the shaft. 2. The device according to claim 1, characterized in that the tensioning mechanism is made of a hydraulic cylinder with a spring-loaded piston, and the cavities of the hydraulic cylinder are interconnected by means of a crane. 3. A device according to claim 1, characterized in that the shaft is made faceted, and the retainer is in the form of a spring-loaded plug for engaging with the faces of the shaft. Sources of information taken into account in the examination 1, USSR Copyright Certificate jNb 302038, cl. E 02 E 3/18, 12.19.66. 2. USSR author's certificate number 210036, cl. E 02 F9 / 02, 12.19.66 (-prototype 12 7 /