JPH0453204Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fixing structure for a resistance rod hit of a power cultivator.

[Conventional technology]

The resistance rod provided at the rear end of the power cultivator is attached to a hit that inserts and fixes the upper part of the resistance rod.
As seen in Publication No. 147203, the bifurcated portions of the resistance rod hit are arranged on both outer surfaces of the transmission case,
It is fixed to the transmission case with bolts.

[Problem to be solved by the invention] However, during plowing work, etc., the load applied to the resistance rod is large, and therefore the load applied to the transmission case is large.

This idea was made in view of the above circumstances.
It is an object of the present invention to provide a fixing structure for a resistance rod hit of a power cultivator, in which the load applied to the resistance rod can be received by distributing it to various members as much as possible.

[Means to solve the problem]

The structure of the present invention that achieves the above object includes a transmission case sandwiched between a pair of opposing members on the left and right sides of the machine base, a fender on the side of the machine base that covers the top of the tilling blade, etc. In a power cultivator equipped with a resistance rod at the rear end, the resistance rod hit that holds the resistance rod is provided with a forked portion, and the forked portion is attached to both inner surfaces of the rear end portions of the pair of left and right opposing members of the machine base. and tighten together the flange formed on the peripheral edge of the transmission case, the bifurcated portion of the resistance rod, and the side surface of the machine base, and the fender, the bifurcated portion of the resistance rod, and the machine base. It is characterized by being fastened together with the side part of.

[Effect]

The load applied to the resistance rod during plowing work is distributed to the machine base and transmission case through the fastening portion of the resistance rod hit.

〔Example〕

FIG. 1 is a side view of the power cultivator, and FIG. 2 is a bottom view of the main parts thereof.

The base 2 of the power cultivator 1 is composed of a pair of left and right plate members 3 and a plate member 4 connecting the rear ends thereof. The pair of left and right plate members 3 are integrally provided with a substantially inverted L-shaped plate portion 5 and an upright plate portion 6 that stands upward at the rear half thereof. The approximately inverted L-shaped plate portion 5 has a horizontal portion 5a and a horizontal portion 5a.
The upright plate part 6 vertically extends upward from the outer edge of the horizontal part 5a of the rear half of the substantially inverted L-shaped plate part 5. A plate member 4 having a substantially U-shape in plan view is disposed between the inner surfaces of the rear end portions of the left and right upright plate portions 6, with the open side facing forward, and both are fastened together by bolts 7. The rear parts of the left and right plate members 3 of the machine stand 2 are arranged so as to sandwich both sides of the upper half of the mission case 8. A spacer (not shown) is interposed between the flange portion 8a formed on the peripheral edge of the mission case 8 and the left and right plate members 3 of the machine base 2, and the bolts 9 are fastened at a plurality of locations. The rear part of the machine base 2 is fixed to the case 8. The transmission case 8 is a vertically long case and is arranged in a backwardly inclined state.

The horizontal portions 5 of the left and right plate members 3 of this machine base 2
An engine 10 is mounted on the front part of a. The power of the engine 10 is transmitted to the transmission case 8 by a winding transmission mechanism 11 disposed on one side of the machine base 2.
The power is transmitted to an input shaft provided in the transmission case 8, and is transmitted by a transmission chain in the transmission case 8 to a tilling shaft 12 disposed laterally in the lower part of the transmission case 8 passing through the transmission case 8. axis 1
A tilling blade 13 fixed to 2 is rotationally driven. The power can be connected or disconnected by a belt tension clutch lever 15 provided at the operation part of the handle 14 extending rearward and upward from the top of the machine base 2, which can freely come into contact with the belt of the winding transmission mechanism 11. Tensioner 1
Do this by moving 6. 11a is a belt cover.

The top of the tilling blade 13 is covered with a fender 17. The base end of the fender 17 is bent downward into a substantially inverted L-shape, and the bent side piece 17a is attached to the vertical portion 5b below the shoulder of the substantially inverted L-shaped plate portion 5 of the machine base 2. It is fixed with a plurality of bolts 18.

A hitch 20 for holding the resistance rod 19 is attached to the rear end of the machine base 2. This hitchi 2
0 has a cylinder 20b fixed within the base end of the bifurcated portion 20a. The bifurcated portion 20a consists of a pair of opposing parallel parts, a pair of sloped parts that are arranged opposite to each other so that the interval gradually narrows, and an arc-shaped part that is continuous with them. The cylinder 20b is fitted and fixed within the portion. The front end surfaces of the pair of opposing parallel portions are inclined backward. The hitch 20 is arranged so that the opposing parallel parts of the bifurcated parts 20a are adjacent to the inner surfaces of the rear end parts of the vertical parts 5b of the left and right substantially inverted L-shaped plate parts 5 of the machine base 2. The rearwardly inclined front end surface is arranged along the inner edge of the flange portion 8a of the mission case 8 which is arranged so as to be inclined backwardly. And the flange portion 8a of the mission case 8,
A spacer 21 is provided between the hitch 20 and the forked portion 20a.
(see FIG. 2), the forked portion 20a of the hitch 20 is inserted at the upper and lower ends of the front end of the hitch 20.
and the flange part 8a of the transmission case 8 and the machine base 2.
The bolt 2 is passed through the vertical portion 5b of the approximately inverted L-shaped plate portion 5.
Tighten together with 2. Further, the rear end portion of the fender 17 is curved downward and extends through the intermediate portion of the upper and lower through bolts 22 to the rear end of the vertical portion 5b of the substantially inverted L-shaped plate portion 5 of the machine base 2. And Hitsuchi 20
A spacer 23 (see Fig. 2) between the fork portions 20a of the
interposed between the bifurcated portion 20a of the hitch 20 and the vertical portion 5b of the substantially inverted L-shaped plate portion 5 of the machine base 2 at the rear position intermediate between the upper and lower through bolts 22 positions.
and the side piece 17a at the proximal end of the fender 17, and tighten them together with a bolt 24. And this hitchi 2
The upper end of the resistance rod 19 is inserted into the cylinder 20b of the hitch 20, and the connecting pin 25 is inserted into the horizontal hole provided at the rear end of the hitch 20 and the horizontal hole provided in the resistance rod 19. A resistance rod 19 is connected to. Therefore, there are two places on the top and bottom of the front end of the hitch 20,
Since the hitch 20 is fastened together with the machine base 2, transmission case 8, and fender 17 at three locations, one at the rear of the middle part, the load applied to the resistance rod 19 during plowing work etc. is reduced. Machine stand 2,
Since the transmission case 8 receives the support in a dispersed manner, it is advantageous in terms of strength. In addition, co-tightening reduces assembly man-hours and improves productivity. It also prevents the rear part of the machine base 2 from opening due to stones.

In the above example, the tilling blade 13 is arranged at the lower part of the transmission case 8, and the tilling blade 13 performs traveling together with tilling. Some also have a tilling blade located behind the drive wheel.

[Effect of idea]

As explained above, according to the present invention, the resistance rods are fastened together to the transmission case and the machine base, and are also fastened to the fender and the machine base, so that the load applied to the resistance rods during plowing work etc. is shared. Since it is distributed over the machine base and transmission case through the tightening points, it is advantageous in terms of strength and also reduces the number of assembly steps, making assembly work easier.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a power cultivator, and FIG. 2 is a bottom view of the main parts thereof. 1 is a power tiller, 2 is a machine base, 5 is a substantially inverted L-shaped plate part, 5a is a horizontal part, 5b is a vertical part, 6 is an upright plate part, 7, 9, 18, 22, 24 are bolts, 8 is a Mission case, 8a is a flange part, 10 is an engine, 11 is a winding transmission mechanism, 11a is a belt cover, 12 is a tilling shaft, 13 is a tilling blade, 14 is a handle, 15 is a belt tension clutch lever, 1
6 is a tensioner, 17 is a fender, 17a is a side piece, 19 is a resistance rod, 20 is a resistance rod hit, 2
0a is a bifurcated portion, 20b is a cylinder, 21 and 23 are spacers, and 25 is a connecting pin.

Claims (1)

[Scope of utility model registration request] A power tiller equipped with a transmission case sandwiched between a pair of opposing members on the left and right sides of the base, a fender on the side of the base that covers the top of the tiller blade, etc., and a resistance rod at the rear end of the base. In the above, the resistance rod hit that holds the resistance rod has a bifurcated portion, and the bifurcated portion is arranged on both inner surfaces of the rear end portions of the pair of left and right opposing members of the machine base, and is attached to the peripheral edge of the transmission case. The formed flange portion, the forked portion of the resistance rod, and the side surface of the machine stand are fastened together, and the fender, the forked portion of the resistance rod, and the side face of the machine stand are fastened together. A fixed structure for the resistance rod hit of a power tiller.