JPS605768Y2 - Excavation machine for passenger tractors - Google Patents

Description

[Detailed description of the invention] This invention relates to a digging machine for a riding tractor that performs root cutting, digging, soil sieving, etc. of various bulbs, root vegetables, and seedlings. To provide an excavator that requires less power, has a simple structure, and can effectively perform excavation work.

The present invention will be explained in detail below based on the drawings exemplified.

Reference numeral 1 indicates an upper coupling device connected to the top link of a riding tractor (not shown), and 2 indicates a lower coupling device connected to the lower link, which allows the excavator 3 to be moved up and down by the lifting device of the riding tractor (not shown). This structure determines the trench depth.

Reference numeral 4 denotes a digging blade with a U-shaped cross section, the bottom of which forms the blade part 5, and the upper front ends of both side plates 6, 6 are connected to support plates 8 and 8 hanging down from both sides of the front end of the frame body 7. It is rotatably supported by provided pins 9, 9.

Reference numeral 10 denotes a soil sieving machine installed behind the digging blade 4, and a support shaft 13 is mounted on support plates 12 and 12 hanging from both rear sides of the frame 7 on a horizontal pipe 11 installed horizontally in the middle of the machine. is inserted between the soil sieving rods 14 whose front portions extend from the rear end of the blade portion 5 on the horizontal pipe 11.
. . . and the rear upper rod 16 . . . are fixed alternately.

Reference numeral 17 denotes an input shaft that receives power from the riding tractor, and transmits the power to a drive shaft 19 mounted on a gear housing 18 provided on the frame 7.

Eccentric cams 20, 20, and 2L21 are mounted on both sides of the drive shaft 19, and the eccentric cams 20 and 21 are mounted so as to be eccentrically opposite to each other about the axis of the drive shaft 19.

The upper ends of the pins 22, 22 protruding from the side plates 6, 6 are interlocked and connected to the eccentric cams 20, 20 by connecting frames 23, 23 that loosely fit around the outer periphery of the eccentric cams 20, 20, and swing the blade portion 5 back and forth. It is a moving structure.

Reference numeral 24 denotes a support rod on which the middle part of the front support rod 15 and the front end of the rear support rod 16 are fixed, and both ends thereof are attached to the connecting frame 2.
5 and 25, the soil sifting machine 10 is rotated up and down by being interlocked with the eccentric cams 21 and 21.

26 is a tail wheel provided on both sides of the rear end of the frame, 27 is a tail wheel pipe, and 28 is a tail wheel handle.

When carrying out the work, first drive the lifting device (not shown) to raise and lower the excavator 3, and then move the tail wheel handle 28.
After determining the vertical position of the tail wheel 26 and determining the depth of excavation, the riding tractor (
(not shown).

At this time, the blade part 4 swings back and forth around the pin 99 in conjunction with the eccentric cam 20, so the tip of the blade part 5 first rotates downward and bites into the soil to perform root cutting, and then The soil sieving rod 1
4...Move up.

At the same time, the soil sieving machine 10 also works with the eccentric cam 21 to
It rotates about 3 in the opposite direction to the digging blade 4.

That is, when the soil sieving bar 14 rotates up and down, the front part of the front sieve bar 15 rotates downward and upward in the opposite direction so as to intersect with the soil sieving bar 14 in side view, and is placed on the soil sieving bar 14. The soil of the crop is sieved, and then the soil is sent out onto the cultivation surface through the rear upper digging rod 16, and one step of the digging work such as root cutting, digging, sieving the soil, and sending it out to the rear is carried out. finish.

As detailed above, the digging machine for a riding tractor according to the present invention has a digging blade that swings back and forth, so it can effectively carry out lifting, root cutting, digging, etc. of crops. It is possible to save a large amount of power required for digging (approximately 113 mm), and the structure is simplified because the eccentric cam for swinging the digging blade and the eccentric cam for rotating the soil sieve root are installed on the same drive shaft. Needless to say, this type has many advantages, such as less vibration during operation, compared to a type with two drive shafts.

In addition, both eccentric cams are eccentrically set in opposite directions, so that the soil sieving rod of the digging blade and the front upper soil sieving rod of the soil sieving machine are rotated in opposite directions so that they intersect in side view. It has become possible to have the advantage of improved separation from the

[Brief explanation of the drawing]

The accompanying drawings are drawings illustrating embodiments of the present invention, in which FIG. 1 is a side view of an excavator, and FIG. 2 is a plan view of FIG. 1.

Claims (1)

[Scope of utility model registration request] In a digging machine for a riding tractor in which a soil sifter is provided at the rear of the digging blade, eccentric cams 20 and 21 are mounted on a drive shaft 19 eccentrically in opposite directions, and the digging blades 4 are arranged alternately.
A rear part of the digging blade 4 whose front part is rotatably supported so that the soil sieving bar 14 of the soil sieving machine 10 and the front part of the front digging bar 15 of the soil sifting machine 10 rotate vertically in the opposite direction while intersecting with each other. and an eccentric cam 20. A digging machine for a riding tractor is characterized in that a front part of a soil sifting machine 10 whose intermediate part is rotatably supported and an eccentric cam 21 are connected to each other.