Flexible connection device for high and low limit control of tractor's forced-into-soil suspension mechanism

Abstract

Provided is a flexible connection device for tractor pressed-into-soil suspension mechanism high and low limitation control. The flexible connection device comprises a multi-way valve, a first pin shaft, a flexible shaft push-pull arm, a second pin shaft, a third pin shaft, a flexible shaft swinging support assembly, a fixation support, a push-pull flexible shaft assembly, a flexible shaft fixation front support, a flexible shaft fixation rear support, adjusting nuts, a hoisting height limiting mechanism and a suspension hoisting mechanism. The multi-way valve is connected with one end of the flexible shaft push-pull arm through the first pin shaft; the other end of the flexible shaft push-pull arm is connected with the flexible shaft swinging support assembly through the second pin shaft; the flexible shaft swinging support assembly is connected with a self-lubricating ball head rod end knuckle bearing of the push-pull flexible shaft assembly; the flexible shaft swinging support assembly is arranged on the fixation support; the front and rear fixation ends of the push-pull flexible shaft assembly are arranged on the flexible shaft fixation front support and the flexible shaft fixation rear support respectively; and the rear end of a push-pull core shaft of the push-pull flexible shaft assembly passes through a hole of the hoisting height limiting mechanism. The push-pull core shaft of the push-pull flexible shaft assembly is sleeved by the two pairs of adjusting nuts, and the two ends are arranged at the two sides of the hole of the hoisting height limiting mechanism respectively.

Description

technical field [0001] The invention belongs to the field of tractors, and relates to a connection device, in particular to a flexible connection device for height limit control of a tractor's forced-into-soil suspension mechanism. Background technique [0002] At present, there are two types of high and low limit control devices for the tractor's forced-into-the-soil suspension mechanism: one is realized by adding a jumping mechanism to the hydraulic control valve spool and a positioning control valve on the hydraulic cylinder. Higher, usually can only be realized when the spool is thicker, but it cannot be realized for the small flow rate and thin spool. Its two, adopt the suspension mechanism lifting arm and the spool control mechanism to realize through the mode of mechanical lever linkage, usually the lever mechanism is complicated, and it is difficult to arrange and adjust. There are certain limitations in design, manufacture and use, and the cost is relatively high. ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two types of high and low limit control devices for the tractor's forced-into-the-soil suspension mechanism: one is realized by adding a jumping mechanism to the hydraulic control valve spool and a positioning control valve on the hydraulic cylinder. Higher, usually it can be realized when the spool is thicker, but it cannot be realized for the flow rate and thin spool

Second, the lifting arm of the suspension mechanism and the valve core control mechanism are realized through mechanical lever linkage. Usually, the lever mechanism is complex and difficult to arrange and adjust.

There are certain limitations in design, manufacture and use, and the cost is relatively high

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