Dragging type middle-sized disc harrow

Abstract

The invention discloses a dragging type middle-sized disc harrow. The dragging type middle-sized disc harrow comprises a front harrow set and a rear harrow set, wherein hinging arms extending to the middle are fixed to the same ends of the front harrow set and the rear harrow set, the top ends of the two hinging arms are hinged through a rotary shaft, a longitudinal beam is arranged between the front harrow set and the rear harrow set, the front end of the longitudinal beam is hinged to the front harrow set, a plurality of positioning holes are formed in the rear middle portion of the longitudinal beam, and an adjusting pin is arranged on the rear harrow set; two connecting plates are arranged on the front side of the front harrow set in a relatively fixed mode, and the two connecting plates are hinged to a traction assembly located in front of the connecting plates. Due to the fact that the front harrow set and the rear harrow set are hinged together, deflection adjustment is convenient and quick, time and labor are saved, and efficiency is extremely high. In work, a tractor is in one-point dragging connection with a harrow body, the influence of swinging of the tractor on a harrow disc and the harrow body is reduced, and then the service life of a whole set of equipment can be prolonged; when the disc harrow is transported in an idle state, the whole device is fixed to the tail of the tractor safely and firmly through a three-point suspension mechanism formed by a suspension hole and two suspension pins.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a medium-sized disc harrow of an agricultural land preparation machine. Background technique [0002] As an agricultural soil preparation machine, the medium-sized disc harrow is widely used in crushing soil after plowing, soil preparation before sowing, mixing soil and fertilizer, and stubble removal in light and medium soil. mechanical. The current medium-sized disc harrow structure such as figure 1 , 2 As shown, it usually includes the front rake group 1 and the rear rake group 3, both of which are connected to the suspension rake frame 2 through the pressure plate and standard parts. Respectively loosen the pressure plate bolts, artificially move the front rake group and the rear rake group, and adjust the closing position of the angle adjustment plate 4, the operation is relatively troublesome, the work intensity is relatively large, and the adjustment efficiency is low. In add...

AI Technical Summary

Problems solved by technology

The current medium-sized disc harrow structure such as figure 1 , 2 As shown, it usually includes the front rake group 1 and the rear rake group 3, both of which are connected to the suspension rake frame 2 through the pressure plate and standard parts. Loosen the bolts of the pressure plate respectively, manually move the front rake group and the rear rake group, and adjust the closing position of the angle adjustment plate 4, the operation is troublesome, the work intensity is high, and the adjustment efficiency is low

In addition, the existing medium-sized disc harrows are all in the form of suspension, that is, they are connected to the tractor through their own three-point suspension. During the work of the suspended mid-sized disc harrow, due to the high-lying and uneven ground, the entire harrow body will generate lateral force with the swing of the tractor, which greatly Increases the axial load on the blades, thereby reducing the working life of the blades and the entire disc harrow

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