Suspended agricultural implement central pull rod quick hitching device

Abstract

The invention discloses a suspended agricultural implement central pull rod quick hitching device and belongs to agricultural machinery. Side plates are fixedly installed at the two ends of an upper shaft and the two ends of a lower shaft, the upper shaft is sleeved with a hanging plate with hanging pins, arc-shaped sliding way holes A and B are formed in the side plates, L-shaped pull rod framesare hinged to the inner wall faces of the side plates through pin shafts D, pin shafts A installed on the L-shaped pull rod frames are inserted into the arc-shaped sliding way holes A in a matched manner, a linkage plate is mounted at the ends of the pin shafts, the lower shaft is sleeved with a front hook, a rear hook is hung on an arc-shaped sliding way hole C of the linkage plate through a pinshaft B, the pin shaft B is inserted into the arc-shaped sliding way holes A in a matched manner, a pin shaft C with an eccentric wheel is sequentially inserted into the arc-shaped sliding way holes Bin the side plates and round holes of the front hook and the rear hook, and upper holes and lower holes are fixedly formed in the side plates. The device achieves rapid hitching between a tractor central pull rod and an upper hanging point on a hanging agricultural implement, and is unique and reasonable in structure, easy and convenient to hitch, high in hitching efficiency, high in applicationcapacity and reliable in use.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a tractor central pull rod and a hanger coupler for agricultural implements. Background technique [0002] The central pull rod of the three-point suspension mechanism of the tractor hydraulic system currently uses a spherical hinge structure installed at its rear end. The connection between the center tie rod of the tractor and the upper suspension point of the agricultural implement is accomplished by means of the center tie rod ball hinge and the hole of the upper suspension point. Alignment adjustment is very difficult, especially because the hanging point on the agricultural implement is fixed, which increases the difficulty of hooking, the hooking efficiency is low, and time-consuming and labor-intensive. In order to solve the above problems, in recent years, a central tie rod with a hook structure installed on the rear end of the central tie rod is applied in the tractor hyd...

AI Technical Summary

Problems solved by technology

[0002] The central pull rod of the three-point suspension mechanism of the tractor hydraulic system currently uses a spherical hinge structure installed at its rear end. The connection between the center tie rod of the tractor and the upper suspension point of the agricultural implement is accomplished by means of the center tie rod ball hinge and the hole of the upper suspension point. Alignment adjustment is very difficult, especially because of the fixed position of the suspension point on the agricultural implement, which increases the difficulty of mounting, the mounting efficiency is low, and time-consuming and labor-intensive

In order to solve the above problems, in recent years, a central tie rod with a hook structure installed on the rear end of the central tie rod is applied in the tractor hydraulic suspension mechanism, and is connected with the articulated pin by a buckle locking method. Compared with the prior art, The hitch efficiency has been improved, but since the position of the upper suspension point of the three-point hitch device of agricultural implements cannot be adjusted, that is, the position of the hitch pin cannot be changed, the convenience and efficiency of the hitch operation still need to be improved

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