Field furrower adopting cone disk clutch

Abstract

The furrower includes speed reducer box mounted on the machine frame, colter disk, driving device for driving colter disk shaft and making it rotate and clutch, and is characterized by that it adopts cone disk clutch, on the cone disk clutch shaft a conical driving disk and a driven disk are mounted, both are tightly compressed together by spring, at the same time it adopts screw clutch as control mechanism, one end of the driven shaft is equipped with disengaging pawl, on the shaft an axial channel is set, in the channel a pin-lift is set, and one end of the pin-lift is placed against disengaging pawl, and its another end is planced against driven disk. Its structure is more simple and compact.

Description

technical field [0001] The invention belongs to the field of machinery and relates to a farmland ditching machine using a cone-disc clutch. Background technique [0002] With the development of agricultural mechanization, all kinds of agricultural machinery have also developed more and more complete, among which the farmland ditching machine has also developed rapidly, and large-scale rear-mounted ditching machines and small front-mounted ditching machines have appeared. The various components of various trenchers, such as cutterheads, blades, depth stops, etc., are also being continuously improved. Its structure basically includes a box set on the frame, a cutter head, a transmission device and a clutch that drive the cutter head to rotate. The used clutches of ditching machines in the prior art mainly contain jaw clutches and flat disc friction clutches, especially multi-plate flat disc friction clutches; and conical friction clutches (hereinafter referred to as cone disc...

AI Technical Summary

Problems solved by technology

The existing cone-disc clutch does have some shortcomings: 1. The structure of the traditional cone-disc clutch is not as compact as the multi-plate type, because the friction area is small, the friction force is small, and the torque that can be transmitted is small. If the pressure of the spring is appropriately increased , the friction force can be increased to increase the torque, but the operating force will also increase accordingly, to the point that it cannot be operated, that is, the operating force to separate the cone-disc will become larger, and the operator will be very laborious to pull it by hand.

Its structure is not compact enough

2. The driving disk and driven disk of the traditional cone-disc clutch are installed on two shafts respectively, which is another reason why the structure is not compact enough

However, the traditional flat disc friction clutch also has many shortcomings: 1. The separation effect is poor, and even the separation is unclear

This phenomenon will bring great potential safety hazards, because: there are many cutting knives on the cutter head, and when the ditching machine stops ditching and turning at the head of the field or driving on the road, the high-speed rotating cutter head will hurt the operator and pedestrians. bring great danger

This problem has become a major difficulty in the design of trenchers, and it has existed for many years but cannot be solved

2. The structure of the traditional flat plate clutch is complex and heavy

3. Due to the complex structure, it is difficult to maintain, replace parts and debug, and can only be repaired and debugged by skilled workers who have received professional training

The space between the driven plate and the active plate is very small, and the adjustment distance between the three release levers and the release bearing has a tolerance of 0.3 mm, which cannot be adjusted accurately by unskilled operators; if the adjustment is not correct, insufficient bonding force will occur and the friction surface will be burned Or the problem of obvious separation; the users of the ditching machine are farmers and mechanics, and it is generally difficult to master its maintenance and debugging technology, which causes inconvenience in use

4. Due to the complex structure, its manufacturing cost is relatively high

5. The operating parts are easily damaged

When separating, the separation claws and separation bearings are under great pressure, and they are in high-speed operation, the friction is very serious, and the separation bearings are often damaged. As an agricultural machine, the trencher has poor working conditions, and it has more contact The muddy water, dust and sundries in the environment make the problem of clutch disengagement more serious

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