SU149864A1 - Folding foot - Google Patents

Description

The invention relates to a hydraulically operated folding support, which can be used to increase the cargo stability of automobile cranes, excavators and other self-propelled machines during their operation.

Hinged supports are known to prevent tipping truck cranes, excavators and other self-propelled machines with a power hydraulic line, which is mounted pivoting on the machine's pLL, and the rod is articulated with the stop axis.

However, these supports have a large shoulder to the axis of the hydraulic cylinder and a very small angle of rotation of the support (10-15 °) or a large angle of rotation, but a small shoulder and a large force on the rod of the hydraulic cylinder, and consequently, large dimensions of the machine in the transport position.

The described folding support does not have these drawbacks.

This is achieved by the fact that the axis of support is made slip, in the direction of the grooves of the shoe, which is pivotally connected with the bracket, which is fixed in the lower part of the frame. At its free end, the shoe carries a support ptu.

FIG. 1 shows the described folding support in the transport position; in fig. 2 is the same at the time of its fixation with a partial cut along the axis of the slider; in fig. 3 is the same at the time of its full fastening, with a partial section along the axis of the rod of the hydraulic cylinder.

The folding support consists of a support frame /, a hydraulic cylinder 2 connected to the support frame by an axis 3, a rod 4 of a hydrocycndra, at the end of which an axle 6 is articulated through a spherical bearing 5.

To the eyelets of the support frame bracket, axis 7 pivotally attaches OT1KIDNY shoe 8, in which there is a longitudinal groove, with number 149864-- 2 -

It serves to move the stop axis and increase the stop torque. -

The upper end of the shoe through the sphere rests on the slider 9, which slides in the grooves of the support bar 10.

The guide hooks 11, which serve to keep the axle-stop from sliding along the groove of the shoe when the axis of the hydraulic rod of the hydraulic cylinder coincides with the axis of the groove, are welded to the bows of the support frame.

In the folded state, the shoe 8 is in the position indicated in FIG. one.

When the maslaves are fed, the cavity of the hydraulic cylinder 2, the rod begins to move and turns the shoe 8 to the position indicated in FIG. 2. As soon as the shoe is rotated by the supporting p. 10 until it stops against the ground, the stop axis b starts moving along the groove from the position / into the // position up to the stop against the wall of the shoe. Upon further extension of the stem 4, the shoe begins to rotate around axis 7, and the slider 9 slides relative to the support bar 10, which lies on the ground, and the machine is raised (Fig. 3).

When the shoe is folded, the oil is fed into the cavity of the hydraulic cylinder 2, the rod is retracted, and the stop axis slides along the slot of the shoe from the // position to the position /.

In the п-position / axis-abutment rests on the end of the groove of the shoe and the further stroke of the rod in the cylinder shoe, turning, takes the position shown in FIG. one.

When the shoe is rotated at a certain angle, the ends of the axis of support, protruding beyond the grooves of the bashmak, begin to slide along the curvilinear surface of the guide hooks //.

The set of the described folding support was made and installed on a prototype of an AKG-BZ hydraulic truck-mounted crane for production tests.

Subject invention

Hinged support to prevent tilting excavators, truck cranes and other self-propelled machines with a power hydraulic cylinder mounted on the frame of the machine, the rod of which is articulated with the axle-stop, characterized in that The seal is made of a shoulder-strap sliding in the guide grooves, which is pivotally connected to a bracket fixed in the lower part of the frame and carrying a support bar at its free end.

FIG l.