SU1211133A1 - Automatic locking support of truck movable cab - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to vehicle engineering and relates to flip-off truck cabs.

An auto-undercarriage of a hinged cab of a truck containing the upper and lower halves folded according to the scissors principle is known (see US Pat. No. 3,752,530, cl. 296-35, published 1973).

Known supports have increased dimensions in the transverse direction and, therefore, the need to use reinforced U-shaped profiles and pipes for the halves of the support. In addition, a disadvantage of the known supports is the inability to protect the locking mechanism from contamination and damage by shielding.

The purpose of the invention is to increase the compactness and operational reliability.

The goal is achieved by the fact that the hinged cab support of a truck is equipped with a closed case, formed by a main plate fixed on it with upper and lower guides and a protective lid, with a control element between this upper guide and the lower guide that is movable against the action of the spring. equipped with guide elements, protruding from under the protective cover of the case, part of which has an upper and lower hook hook, and the main plate of the case is mounted on the lower half of the support ver.xx half of which is made in the form of a hook part located in the locking position of the support in the free volume of the bottom hook trap, and on the upper half of the support in the area of the axis of rotation there is a lock release lever that is rotatable against the action of the spring and is made in the lower part as the hook, which in the locked position and in the working position of the cabin is pressed against the bolt located on the axis of rotation, and in the unlocked position is placed in the free volume of the upper hook hook.

In addition, grooves are made in the upper and lower guides, in which rear and front protective strips are installed, the specified control element being supported on the inner surface of the latter, and the inner surface of the rear protective plate predominantly mating with the spring end.

FIG. 1 shows the proposed support, plan; in fig. 2 is a section A-A in FIG. one.

Automatically locking the support of the folding cab of the truck contains the lower half of I and the upper half of C, which are movably connected to each other according to the scissors principle, i.e. locking relative to each other at the rotational axis DR.

This upper half of the support is mounted an enclosed housing formed by the main

plate 2 fixed on it by the upper and lower 36 guides and protective cover 8. In the case between these guides, the lower 36 of which are movable against the action of the spring 6 of compression, the control element 4 is fitted with guiding elements 5. Protruding from - under the protective cover 8 of the body part of the control element has an upper hook 4a and a lower trap

0 46 hooks, as well as the end of the 4c slip. In the guides of Pros and 36, grooves 16 are made, in which rear protector strips 8a and anterior 86 are mounted, and the control element 4 is supported on the inner surface of the latter, and

 the surface of the rear protective strips 8a pressed the end of the spring 7a. The protective cover 8 is fastened with screws 9.

The upper half of the II support is made in the form of a hook part 11 with an edge 11a

Q slip. A bolt 1 is located on the DR axis of rotation of the support half. In the area of the axis of rotation, mainly on the upper half of the support, there is a lock release lever 12, which can turn against the action of the extension spring 14. AT

5 the lower part of the lever 12 is made in the form of a hook 15, which in the locked position and in the working position of the cabin is pressed against the bolt 1, and in the unlocked position is placed in the free volume of the upper hook trap 4a. The spring 14 is fastened on bolts 14a and 146.

On the upper half of the support II there is an emphasis 10 for the lower half.

When the cockpit is tilted, the upper II and lower I halves of the support turn around the rotational axis DR until the hook part 11 does not touch the end 4 of the control element 4 with its edge.

With a further turn (further tilting of the cabin) control element

0 4, overcoming the force of the compression spring 6, is moved along the guides For and 36 by means of the guiding elements 5; the rotation continues until the hook part 11 falls into the lower hook trap 46, and the control element 4 bounces back under the action of the compression spring 6 along the guides For, 36 on the guide elements 5.

At the same time, the upper half AND rests against the stop 10 of the lower half I. In this position, the support is locked, i.e., fixed by positioning the hook part I 1 in the lower trap 46 of the hook of the control element 4 relative to the pressure forces 5 in the direction opposite to the cab tilting . In addition, it is fixed relative to the tensile forces (cab tilting forward) by contacting the upper half II with the stop 10

the lower half of I, which simultaneously restricts the angle of tilt.

When unlocking the support to return the cab to its initial position, the lock release lever 12 is turned to the right, against the action of the extension spring 14, until the slide edge 15a of the lock release lever 12 does not touch the sliding end 4 of the control element 4.

By the extension spring 14, the lock release lever 12 is pressed against the bolt 1 on the rotational axis DR, which also serves as a stop. Upon further rotation of the lever 12, the control element 4, under the influence of both sliding surfaces, moves against the action of the spring 6 from its position until the lever 12 sinks into the upper hook catcher 4a.

At the same time, in this position, the hook part 11 of the upper half II is released from the hook catcher 46, and thus the support is removed from the lock and can rotate around the axis of the DR when the cab is tilted to its working position (returning to its original position).

During this movement, the hook part 15 of the lever 12 relieving the lock slides out of the hook catcher 4a and bounces back at the expense of the spring 14 to the bolt 1 (stop), thus the support is automatically prepared for the next tilting, according to the ECE rules.

As a stop or stop, the stroke of the control element 4, which is pushed by the compression spring 6, serves as the front

a protective bar 8a, which, like the rear bar 86, is installed in the slots 16 of the guides of Pro and 36.

Sheet steel may be used as blanks for a support rug, which, depending on the load

be strengthened by making a screening along the edge radius or by flanging the grooves.

The advantages of this invention are in a flat compact design,

due to the location of the working elements in a closed and protected from contamination case and in the implementation of the lower part of the upper support half in the form of a hook part 1 1.

Afig .2

Claims (2)

1. AUTOMATICALLY LOCKING SUPPORT FOR FOLDING CARS FOR THE CAR the lower 36 guides and the protective cover 8, while between the upper guide For and the lower guide 36, movable against the action of the spring 6, there is a control element 4 provided with guides 5, the part protruding from the protective cover 8 of the housing, which has an upper trap 4a and a lower hook trap 46, and the main plate 2 of the housing is mounted on the lower half of the I support, the upper half of which is made in the form of a hook part 11 located in the locked position supports in the free volume of the lower hook trap 46, and on the upper half of the II support in the area of the axis of rotation of the rotation rod there is a lever 12 for releasing the constipation, which is rotatable against the action of the spring 14 and is made in the lower part in the form of a hook 15, which is in the piranha and in the working position of the cabin is pressed against the bolt 1 located on the axis of rotation, and in the unlocking position is placed in the free volume of the upper hook trap 4a. g 2. Support on π. 1, characterized in that in the upper guide Behind and the lower guide 36 grooves 16 are made, in which a rear protective strip 8a and a front protective strip 86 are installed, the control element 4 being supported on the inner surface of the latter and the inner surface of the rear protective strip 8a mainly mated to the end face of the spring 76. fig 1 SU, „. 1211133 12! 1133