JPS5923790Y2 - culvert forming machine - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to an improvement of an underdrain forming machine for forming underdrains for drainage in fields and the like.

The underdrain forming machine uses a tractor to pull the cultivated soil vertical cutting member equipped with the underdrain forming head at the lower end, and while cutting the cultivated soil vertically with the cultivated soil vertical cutting member, moves the underdrain forming head in the soil to form the underdrain. However, in order to adjust and maintain the depth of the underdrain forming head from the ground surface, the underdrain forming machine also cuts the cultivated soil vertically in front of the gauge wheel that rolls on the ground surface and the cultivated soil vertical cutting member in the direction of movement. A coulter is provided to facilitate movement.

Conventionally, as shown in FIG. 5, the coulter 61 is disposed in front of a cultivated soil vertical cutting member 63 having a culvert forming head 62 at its lower end, and the gauge wheels 64 are disposed on both sides of the rear of the machine frame 65. Each individual holder 6
6.67 is attached to the machine frame 65, and for example, when adjusting the depth of underdrain formation, the coulter 61. Each of the gauge wheels 64 must be adjusted individually, and the entire underdrain forming machine becomes bulky and the number of parts increases, resulting in a corresponding increase in cost.

The present invention was devised in view of the above circumstances, and its purpose is to eccentrically dispose a gauge wheel/slough coulter in a dual-purpose holder placed in front of the tilled soil vertical cutting member, thereby increasing the depth of underdrain formation. To provide an underdrain forming machine which can simultaneously adjust a gauge wheel and a coulter when adjusting the height, eliminate structural waste, make the whole compact, and reduce manufacturing costs.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The underdrain forming machine according to the present invention will be specifically explained below based on drawings showing embodiments thereof.

Figure 1 shows the underdrain forming machine according to the present invention (hereinafter referred to as the proposed machine)
Fig. 2 is a side view showing the state of use; Fig. 2 is a plan view;
The figure is an enlarged perspective view of the main part, and FIG. 4 is a sectional view of the enlarged chamber. It is connected using two lower links 11, 11 and one top link 12 extending rearward from this, and is towed by the tractor 1.

Also, between the tractor 1 and the underdrain forming machine 2, one end is connected to the PTO shaft (not shown) of the tractor 1, and the other end is connected to the underdrain forming machine 2.
A transmission shaft 13 connected to a transmission system of a gear box 22 provided in a machine frame 21 is also passed.

At the rear of the upper part of the machine frame 21 is a hopper 2 for storing rice hulls M.
3 is mounted thereon, and below the hopper 23 there is disposed a cultivated soil vertical cutting member 24 and an underdrain forming head 25 fixed to its lower end.

The upper end of the tilled soil vertical cutting member 24 is rotatably supported around a shaft 248, and the middle part is attached to a pin 22b of a crank arm 22a protruding from the gear box 22 using a crank rod 24b. The tractor 1
The cultivated soil vertical cutting member 24 cuts the cultivated soil vertically with the blade portion 24C formed at its front edge, and also cuts the cultivated soil vertically with the blade portion 24C formed at its front edge.
5 moves forward in the soil while pushing away cultivated soil around it,
This is to form a culvert A in the soil.

Since the moving speed of the underdrain forming head 25 accompanying the reciprocating movement of the tilled soil vertical cutting member 24 in the front-rear direction is approximately the same as the traveling speed of the tractor 1, when the cultivated soil vertical cutting member 24 is swung backward, The underdrain forming head 25 comes to a substantially stopped state in the soil, and as a result, the underdrain forming head 25 intermittently forms the underdrain A while repeatedly moving forward and stopping in the soil.

Although not shown in the drawing, a rice husk feeding path is formed inside the cultivated soil vertical cutting member 24, and a rice husk feeding path consisting of a chain or the like is disposed here, and the underdrain forming head 2
The interior of the hopper 5 is hollow and open at the rear, and the rice husks M in the hopper 23 are dropped into the upper end of the feeding path where the rice husks are fed by the auger 23H, and are forced downward by the rice husks feeding member. At the same time as the underdrain A is formed through the underdrain forming head 25, it is sequentially injected into the inside at a high density.

The machine frame 21 is located in front of this tilled soil vertical cutting member 24.
A coulter 26 and a gauge wheel 27.degree. 27 are disposed eccentrically from each other on a shaft 28H using a holder 28 which also serves as a holder.

The holder 28 is integrally framed by supporting rods 28b, 28b (see Fig. 3) whose upper ends are pivotally supported on the blank wall of the gear box 22, and a horizontal rod 28d passing between the intermediate portions. One end of each of the shafts 27a, 27a of each sigage wheel 27.degree.
The gauge wheels 27 and 27 are fixed on both sides of the connecting member 28d, which has an inverted U shape when viewed from the front, and the gauge wheels 27 and 27 are rotatably pivoted on shafts 27a and 27a, respectively, on both sides of the connecting member 28d, separated by spacers. It is fitted.

Further, the coulter 26 is rotatably fitted to a shaft 27 a installed between the leg ends of the connecting member 28 d, parallel to the shaft 27 a, and as the tractor 1 travels, frictional force with the cultivated soil is generated. It vertically cuts the cultivated soil while being rotated around the shaft 268 by the rotary shaft 268, and is not configured to be rotationally driven by power.

Further, the gauge wheels 27 and 27 are configured to follow and roll on the ground surface as the underdrain forming machine 2 moves forward under the traction of the tractors 1 to 1.

28 e is a bundle for adjusting the position of the holder 28; 28 f is a bundle for adjusting the position of the holder 28;
The bundle 28e is a continuous rod, and the bundle 28e has a shaft portion with a thread cut around the periphery that is screwed through a nut member 21a fixed to the machine frame 21, and its tip is fixed to a metal fitting 28g.
One end of a connecting rod 28f inserted through the cylindrical body 28h is connected to g, and the other end is connected to the tip of the holder 28, and the holder 28 can be moved between its upper ends by rotating the bundle 28e. Adjust the gauge wheel 27.
27 and the vertical dimension of the underdrain forming head 25, in other words, the depth of the underdrain forming head 25 from the ground surface can be adjusted.

Next, the operation of the underdrain forming machine configured as described above will be explained.

First, the underdrain forming head 25 of the underdrain forming machine 2 is lowered into the ground through a hole dug in advance, and the holder 28 is moved up and down by rotating the bundle 28e, and the gauge wheels 27 and 27 are brought into contact with the ground surface. Underdrain forming head 2
5 is located at a desired depth from the ground surface, the tractor 1 is driven, and the PTO shaft is driven.

Both gauge wheels 27 and 27 support the entire underdrain forming machine and roll on the ground surface while maintaining the underdrain forming head 25 at a predetermined depth from the ground surface, and the coulter 26 rotates around the shaft due to frictional force with the tilled soil as the tractor 1 travels. 268, the soil surface is vertically cut to a required depth in front of the cultivated soil vertical cutting member 24 in the advancing direction, thereby facilitating the forward movement of the cultivated soil vertical cutting member 24.

Further, the power transmitted from the PTO shaft to the transmission system in the gear box 22 via the transmission shaft 13 is transmitted to the cultivated soil vertical cutting member 24 via the crank arm 22a and crank rod 24b, and the cultivated soil vertical cutting member 24 is connected to the shaft 248. Rotate it back and forth.

The moving speed of the underdrain forming head 25 is approximately the same as the traveling speed of the tractor 1, but when the tilled soil vertical cutting member 24 is swung backwards with respect to the tractor 1, the underdrain forming head 25 moves toward the tilled soil. The culvert A is formed intermittently while repeatedly moving forward and stopping.

The power transmitted to the transmission system in the gear box 22 is also transmitted to the auger 23a of the hopper 23 and the rice husk feeding member in the cultivated soil vertical cutting member 24 via the chain 23b, and the rice hull M in the hopper 23 is The auger 23a drops the rice husk from the outlet at the bottom of the hopper to the end of the rice husk feeding path in the cultivated soil vertical cutting member 24, and from there it is poured into the underdrain A via the underdrain forming head 25 by the rice husk feeding member.

As described above, in the proposed machine, since the coulter and the gauge wheel are supported using a holder that also serves as a holder, the number of parts is small and manufacturing costs can be reduced, and the overall structure is extremely compact. Not only does it require less storage space, but when adjusting the underdrain formation depth, the coulter and gauge wheel can be adjusted simultaneously by operating one holder.

Furthermore, since the coulter is eccentrically positioned below the gauge wheel, the diameter of the coulter itself can be small, and the depth of vertical cutting of the cultivated soil can be increased.
The present invention has excellent effects, such as reducing manufacturing costs and making it easier to move the tilled soil vertically cutting member forward.

In the above-described embodiment, the coulter has a structure in which it can freely rotate, but it goes without saying that it may have a fixed structure.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the proposed machine in use, Fig. 2 is a plan view, Fig. 3 is an enlarged perspective view of the main parts of the proposed machine, Fig. 4 is an enlarged cross-sectional view, and Fig. 5 is a similar plan view. FIG. 2 is a side view showing a conventional underdrain forming machine. 24... Cultivated soil vertical cutting member, 25... Underdrain formation head, 26... Coulter, 27...
...Gauge wheel, 28...Holder.

Claims (1)

[Scope of utility model registration request] A gauge wheel that rolls on the ground surface to adjust and maintain the depth from the ground surface of the underdrain forming head that is attached to the lower end of the tilled soil vertical cutting member and is moved through the soil, and a gauge wheel that rolls on the ground surface to adjust and maintain the depth from the ground surface, which is attached to the lower end of the tilled soil vertical cutting member and is moved in the soil. In the underdrain forming machine, the gauge wheel and the coulter are placed in a dual-purpose holder in front of the tilled soil vertical cutting member, and the coulter is installed in a dual-purpose holder in front of the tilled soil vertical cutting member. An underdrain forming machine characterized by being eccentrically arranged so that the shaft center is below the shaft center of the gauge wheel.