Heavy vehicle-mounted leveling leg with compact structure

Abstract

The invention relates to the technical field of mechanical electronic structures, and particularly discloses a heavy vehicle-mounted leveling leg with a compact structure. The leveling leg comprises a reduction gearbox assembly and a leveling support leg general assembly; the reduction gearbox assembly and the support leg general assembly are relatively independent, when the reduction gearbox assembly runs, a semi-connecting shaft transmits axial torsion, the axial torsion enables a trapezoidal force transmission lead screw to rotate, then a force bearing nut matching the trapezoidal force transmission lead screw and a stand column assembly of the trapezoidal force transmission lead screw vertically move downwards, when a foundation sitting plate assembly reaches the ground and is stressed, reaction force is transmitted to the stand column assembly through the foundation sitting plate assembly, transmitted to the force bearing nut and the trapezoidal force transmission lead screw through the stand column assembly, transmitted to a pulse disc through the trapezoidal force transmission lead screw, transmitted to a cylindrical thrust bearing through the pulse disc, transmitted to a bearing pressing upper cover through the cylindrical thrust bearing, and through a bearing pressing cover support leg, forms stress circulation in the support leg general assembly, vertical counter-acting force is not output to the reduction gearbox assembly, and the service life of the reduction gearbox is longer.

Description

technical field [0001] The invention relates to the technical field of mechanical and electronic structures, in particular to a heavy-duty vehicle-mounted leveling leg with a compact structure. Background technique [0002] The existing vehicle-mounted leveling leg motor and the reduction box are connected by a manual adjustment mechanism, which has a complex structure and increases the distance between the motor and the reduction box, resulting in a loss of motor power; and the design of the reduction box is too thick, and the internal redundant space is large and Not compact, taking up too much leg size for the same size of space. [0003] Moreover, the position of the guide key of the leveling support leg is fixed, and the anti-column rotation force is concentrated at one point during operation, which may easily cause damage and breakage of the gland screw or structural parts of the fixed support leg, and the resulting defects such as low service life of the leveling leg,...

AI Technical Summary

Problems solved by technology

[0002] The existing vehicle-mounted leveling leg motor and the reduction box are connected by a manual adjustment mechanism, which has a complex structure and increases the distance between the motor and the reduction box, resulting in a loss of motor power; and the design of the reduction box is too thick, and the internal redundant space is large and Not compact, occupying too much leg size for the same space size

[0003] Moreover, the position of the guide key of the leveling support leg is fixed, and the anti-column rotation force is concentrated at one point during operation, which may easily cause damage and breakage of the gland screw or structural parts of the fixed support leg, and the resulting defects such as low service life of the leveling leg, and the like. After the column is extended, there is a deep guide keyway on the surface of the column, which affects the appearance

[0004] After the supporting legs stretch out to the ground and start to bear the force, the upward pressure of the screw makes the gearbox and its structure an important part or part of the thrust force of the whole supporting leg, which can easily cause defects such as reduced life of the gearbox

[0005] The upper and lower covers of the reduction box are integrally formed and the upper cover is fully enclosed. During assembly and after assembly, it is impossible to detect whether the upper cover is in contact with the bearing or whether the pressure is too tight. It requires high assembly and assembly accuracy, which is difficult and difficult to control in production.

The structure of the gearbox makes it extremely difficult to maintain the internal gears of the gearbox and other structurally moving wearable parts in the later stage

[0006] To sum up, the upper cover of the reduction box itself requires high processing and assembly precision and is an important part of the reduction box to bear the force. However, the upper cover needs to be removed during maintenance to maintain the interior. This action requires more High technical requirements and the user cannot maintain the gearbox by himself, causing inconvenience to the user

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