Rotavator with gear exchange unit

Abstract

The present invention relates to a rotavator with a gear exchanging device. The rotavator with a gear exchanging device comprises a PTO shaft (9) from which power of a tractor is extracted and an input shaft (10) which is connected to the PTO shaft (9) for receiving power. The PTO shaft (9) and the input shaft (10) are arranged in parallel in a gear box (8). A first converting gear (3) installed in the PTO shaft (9) and a first vertical motion gear (6) installed in the input shaft (10) are interlocked with each other. While a second converting gear (4) is installed on a side of the first converting gear (3) and a second vertical motion gear (5) is installed on a side of the first vertical motion gear (6), the second converting gear (4) and the second vertical motion gear (5) are detachably installed on an upper cover (2) of the gear box (8).

Description

technical field [0001] The present invention relates to a rotary tiller, in particular to a rotary tiller with gear exchange unit. The rotary tiller is used in connection with a tractor, and the power is added or subtracted according to the characteristics of the soil, thereby improving site adaptability It is easy to replace the gear. Background technique [0002] A rotary tiller (rotavator) is generally used as a device connected to the rear of a tractor for tillage operations. The box rotates the rotary shaft on which the rotary blade or the cultivating blade is installed, thereby cultivating or turning over soil such as a paddy field or the like. [0003] As an existing technology related to rotary tillers, Utility Model No. 402343 (Rotary Tillers for Tractors) discloses a structure of a rotary tiller main body and arc-shaped blades, etc., in which the blades are connected to the rear of the tractor to be pulled and set A rotating shaft having a plurality of cultivatin...

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Problems solved by technology

However, the above-mentioned technology is limited to keeping the tillage depth constant and preventing slippage, and does not propose a technology to increase or decrease power according to the state of the soil.

[0004] In addition, in Patent No. 440094 (Rotary Tiller for Tractor), in order to turn the bottom of the paddy field into a soft mud state at a constant depth without being affected by the up and down motion of the tractor, it is proposed to use the lifting frame, rotating Blades, hydraulic cylinder control valves, etc. enable hydraulic cylinders to expand and contract. This technology does not propose a technology for adding or subtracting power according to soil conditions. technology-independent

[0005] As technology related to power transmission, utility model No. 452284 (PTO transmission device) discloses a transmission lever, a transmission panel, a switch operation part, an elastic pressure spring, and a PTO clutch control switch part, but what it relates to is the PTO itself. Speed ​​change device; Patent No. 231076 (speed change control device for tractors) relates to a tractor with multiple speed change devices, using a lever to switch the speed change control device for tractors with two speed change devices, but this technology is limited to The technology of the tractor's own transmission for tractors with multiple transmissions; Patent No. 1185540 (Hydraulic device using the driving force of the rotary tiller) relates to the use of the driving force of the rotary tiller applied from the PTO shaft of the tractor And the hydraulic device for generating oil pressure discloses a gearbox with built-in PTO shaft, drive shaft, bevel gear, etc., but only shows a single power transmission structure, and does not show the transmission from the PTO shaft. The technical structure of the addition and subtraction of power

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