JPH0414921B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention aims to restore the air permeability and drainage of the hardened tillage bed around the roots of crops such as fruit trees by penetrating an air blower into the hardened tillage bed and This invention relates to a tiller expansion and softening device for blowing out pressurized air from a tiller to expand and soften the tiller and supply air into the ground.

In order to drive the air blower into the desired position while appropriately turning between the fruit trees, the left and right width of the tiller expansion device should be designed so that it does not interfere with the movement of passing between the fruit trees. It is desirable to make the length in the longitudinal direction as short as possible, and especially when this device is suspended in an overhang form at the rear of the towing machine, it is desirable to make the length as short as possible from the viewpoint of running stability. I would like to make it shorter.

In addition, in order to prevent tilting due to the pulling resistance that occurs when the air blowing body is pulled out of the ground after work, as well as tilting during hoisting, it is necessary to maintain sufficient balance in the left and right directions. In particular, since the air blowing body must penetrate close to the fruit trees, it is installed at a position away from the center of gravity of the device frame, so it must be balanced in the left-right direction.

Therefore, the present invention aims to solve the above-mentioned necessary technical problems, and has a tillage mechanism for blowing pressurized air by penetrating the air blowing body into the ground, and a pressurized air reservoir having an air reservoir for supplying the pressurized air to the air blowing body. The machine frame is mounted on the traction machine so that it can be raised and lowered by a lifting mechanism, and the pressurized air supply mechanism is supported on one side in the left and right direction, and the tilling mechanism is supported on the other side. In the plowing platform expansion and softening device, the device frame is formed so as to embrace the air pockets placed on the left and right sides of the machine body from below, and the rear end is raised to connect the rear part. The rear connecting portion and the mast erected at the front end of the machine frame are connected by a reinforcing rod, and the tilling mechanism is located on the left and right sides of the air reservoir. The purpose of the present invention is to provide a tiller expansion and softening device.

To explain one embodiment, Fig. 1 shows a left side view, Fig. 2 shows diagonal lines, and Fig. 3 shows a rear view.
As shown in a plan view in FIG. 4, the horizontal rod portion 1a is made of, for example, a pipe material and is approximately U-shaped in plan view;
1a and a rear connecting portion 1b with its rear center raised up.
and a horizontal frame 27 to be described later.
, and air pockets 2, 2 are formed on the horizontal rod parts 1a, 1a.
and a compressor 3 are fixedly installed to form a tilling mechanism I, which will be described later.
A pressurized air supply mechanism G is configured to supply the pressurized air to, for example, through a hose or the like. The front lower part of the device frame 1 is pivotally connected to the rear of the left and right lower links 5, 5 which are pivotally connected to the rear lower part of the towing machine 4, and the top which is pivotally connected to the center of the upper part of the towing machine 4. The rear part of the link 6 is pivotally connected to the mast 7 installed on the equipment frame 1, and the top link 6 and lower links 5, 5 of equal length form a parallel link, and the lift piston of the traction machine 4 is connected to the mast 7. If the left and right lift arms 8, 8, which move up and down as the machine moves up and down, move up and down the lower links 5, 5 via lift rods 9, 9, the machine frame 1 will always move up and down in the same posture. A suspension mechanism H is constructed.

Then, as shown in the rear view in FIG. 7, the air tank 12 is installed on the driving mechanism 11 that has the air blower 10 installed at the bottom, and is slid onto the mounting plates 13, 13 installed on the left and right sides of the air tank 12. The tilling mechanism I is formed by pivotally supporting the bosses 14, 14, 14, 14. Mounting plates 18 and 18 are fixed to the lower part of the cylinder 17, and a mounting plate 19 is fixed to the upper part of the cylinder 17, and brackets 20 and 21 are fixed to the mounting plates 18 and 19, respectively, and the lifting cylinder 22 is set upright on the brackets 19 and 20. , fixedly, or the lower part of this lifting cylinder 22 is pivotally connected to the bracket 20 so as to be freely tiltable, and the piston 22
A head 23 is attached to the top of the air tank 12 so that its vertical position can be adjusted, and a receiving plate 2 is fixed to the top of the air tank 12.
4 at the head 23, and the tilling mechanism I is structured as a lifting mechanism 25 that moves linearly up and down along the vertical rails 17 as the piston 22a moves in and out.

As shown in a plan view in FIG. 4, a hollow cylindrical horizontal rod 26 is arranged and fixed in the left-right direction on the device frame 1, and is fitted into the horizontal rod 26 so that it can be moved left and right. The front and rear rails 2 with a U-shaped cross section are mounted on the horizontal frame 27.
8 and 28 in the front and back direction, and fix the mounting plate 1.
Rollers 29, 29, 29, 29 are disposed and pivotally supported in the front and rear of 8, 18, and the rollers 29... are loosely fitted to the front and rear rails 28, 28 so that the tilling mechanism I can be moved in the front and back direction, The stay 3 in front of the stays 31 and 32 fixed to the mounting plates 18 and 18 as a bridge
1 and the horizontal frame 27, and a stay 34 is loosely fitted into opening grooves 28a, 28a provided in the front and rear rails 28, 28 and opening at the rear end. Springs 35, 35 are stretched between the rear stay 32 and the rear stay 32 to prevent the tilling mechanism I from coming off the front and rear rails 28, 28.

As shown in FIG.
6a, tightly fit the upper part of the air blowing body 10 into the guide tube 3.
When the hitting piston 37 hits the head of the air blowing body 10 by a hitting mechanism such as a known air hammer (not shown) installed in the air blowing body 6, the air blowing body 10
is driven into the ground, and at this time, the tilling mechanism I also moves downward along the vertical rails 17, 17. From there, pressure air is supplied to the piston 22a of the lifting cylinder 22 via the lifting valve C as shown in FIG. 10 using an air hose (not shown). It is configured so that it is supplied to

That is, as shown in Figures 3 and 5, the horizontal rod 2
6, the switching valve A and the lifting valve C are installed in parallel, and the grounding detector 39 is pivotally connected to the bracket 30 fixed to the horizontal rod 26 with the pin 38, and the grounding detector 39 is installed as shown in FIG. A pushing plate 39a is provided so that the spools a ₂ and c 2 of the switching valve A and the lifting valve C can be pushed via the pushing levers a ₁ and c ₁ of the switching valve A and _the lifting valve C, respectively, by means of a spring 40. In this state, the pressurized air in the air reservoirs 2, 2 is supplied to the lifting cylinder 22 via the lifting valve C, and the air pipe leading to the injection valve B is connected so as to release it to the atmosphere. When the machine frame 1 is moved down to the position where the receiving plate 16 is in contact with the ground, the grounding detector 39 freely extends the spring 40 as shown in _{FIG .} In this state, the pressurized air remaining in the lifting cylinder 22 is released to the atmosphere from the lifting valve C, and the pressurized air in the air reservoirs 2, 2 is transferred to the injection valve via the switching valve A. It is configured so that it is supplied to B.
In addition, the code|symbol e is a roller.

Further, the driving valve B is connected to the driving mechanism 11 as shown in FIG.
For example, attach it to the guide tube 36, and attach it to the nearby vertical rail 1.
A resilient actuating piece f, such as a rubber plate, is fixed to 7 using a mounting bracket 41, and when the air blower 10 reaches a predetermined insertion depth as shown in FIG. Although not shown since the spool b of the driving valve B is pushed, the passage from the switching valve A to the striking piston 37 is closed. Furthermore, when an air jet valve D is attached to the guide cylinder 36 and an operating lever 43 provided near the driver's seat 42 of the towing machine 4 is operated, the operating lever 15 pushes the spool d by the operating wire 44. When the ball _d1 of the air blowing valve D is opened, the pressurized air from the air tank 12 is transferred from the passage g to the air blowing body 10.
It is configured so that the liquid is supplied to the passage 10a and is ejected from the lower ejection holes 10b.

As illustrated in FIG. 12, the receiving plate 16 is provided with a large hole 16a through which the air blowing body 10 can freely move up and down. Since the hole 16a is closed with the closing plate 45 and the air blowing body 10 is tightly fitted into the hole 45a of the closing plate 45, the air blowing body 10
During the penetrating operation, even if the air blowing body 10 moves slightly in the front and back or left and right directions due to, for example, colliding with pebbles underground, the large holes 16a of the receiving plate 16 are filled with air. Since the blowing body 10 does not come into contact with each other, the penetrating operation is performed smoothly, and because of the elasticity of the closing plate 45, the long air blowing body 10 is supported by the hole 45a, and the air blowing body 10 is The lower part functions as a guide to be vertically inserted into the ground, and during the operation of penetrating into the ground, even if the air blowing body moves slightly as described above, the hole 45a always remains in the air blowing body. 10, the pressurized air ejected from the ejection hole 10b of the air blower 10 after penetrating to a predetermined depth is connected to the air blower 10 and the small penetration hole formed in the ground around it. Since the compressed air is not freely blown out onto the ground surface through the gaps, it also helps to enhance the swelling and softening effect of the pressurized air blown into the ground.

Although not shown, a rigid closing plate 45 is also provided.
may be suspended so as to be in close contact with the upper or lower surface of the receiving plate 16 using a plurality of springs. Also, cultivation mechanism I
For example, the mounting seat 4 is placed on the top of the air tank 12.
6, and a weight 47 is removably fixed to this mounting seat 46 with, for example, bolts 48, and the number of weights 47 attached can be increased or decreased as necessary; Air blower 1
It is formed so that its attached center of gravity coincides with the cylindrical center of the plowing machine 11, thereby assisting the driving force of the driving mechanism 11, so that the penetrating operation can be performed quickly depending on the hardness or softness of the tiller.

Further, as illustrated in FIGS. 6 and 7, there is a seat 4 with a pin hole 49a in the upper part of one vertical rail 17.
9 is fixedly installed, and a pin hole 13a is also provided in the mounting plate 13 on the side closer to this, and the piston 22a of the lifting cylinder 22 is projected upward as shown in FIGS. 6 and 8 to raise the tilling mechanism I. When lifted to a position where the lower part of the air blower 10 hardly protrudes downward from the receiving plate 16, that is, when the tiller expansion device is placed in a moving position, fixing pins 50, for example, are inserted into both pin holes 49a, 13a. This allows the tilling mechanism I to be fixed at the lifting position by inserting the traction machine 4, thereby reducing the amount of lift by the lifting mechanism of the traction machine 4 and preventing the tilling mechanism I from moving unnecessarily during the moving operation.

Further, on the side where the pressure air supply mechanism G is installed, which is the opposite side where the tilling mechanism I is installed, a cylinder 52 is installed before and after the seat plate 51.
For example, the upper part of the stand 53, which is U-shaped in side view, is inserted into the tubes 52, 52 so that the vertical position can be adjusted and fixed with bolts 54. During the movement, the receiving plate 16 and this stand 53 touch the ground at the same time, ensuring vertical penetration of the air blowing body 10, and also when pulling out and lifting after the inflation work, the air blowing body 10 and This stand 53, which is provided on the opposite side in the left-right direction, prevents the upper part of the air blower 10 from tilting to the left and helps it to be pulled out vertically, so that the pulling operation is extremely smooth. It will be smooth.

In addition, in the embodiment, the horizontal rod portion 1 of the device frame 1
a, 1a are formed so as to embrace the air reservoirs 2, 2 placed in the left and right direction of the aircraft body from below, and the rear end portions of the horizontal rod portions 1a, 1a are raised to form a rear connecting portion 1b. and the rear connecting part 1
b and the upper part of the mast 7 erected on the equipment frame 1 are connected by a reinforcing rod 55, and the reinforcing rod 55 is connected to a belt cover 56 for driving the compressor 3 located below and the air reservoir 2, It is formed to surround the 2nd class from above. And the PTO of towing machine 4
The shaft 57 and the input shaft 58 are connected by a universal joint shaft 59, and the input shaft 58 and the pulleys 60 and 61 of the compressor 3 are interlocked by a transmission mechanism 62.

When working, lift the lift arms 8, 8 and lift the device frame 1 to a height where the grounding detector 39 is sufficiently far from the ground surface, and the spring 40 as shown in FIG. As a result, the pushing plate 39a pushes the spool _c2 of the lifting valve C, so that the pressurized air in the air reservoirs 2, 2 is supplied to the lifting cylinder 22 through the lifting valve C, and the piston 22a thereof protrudes. In order to sufficiently lift the tilling mechanism I, the air blower 10 naturally escapes from the ground as shown in FIG. Further, as the tilling mechanism I moves upward, the spool b of the driving valve B is released from being pushed by the actuating piece f, but on the other hand, the spool a ₂ of the switching valve A is pushed by the actuating plate 39a. Therefore, the flow path of the pressurized air in the air reservoirs 2, 2 to the striking piston 37 is closed by the switching valve A, and the driving operation is stopped.

Therefore, the traction machine 4 is moved, the air blower 10 is positioned above the desired tilling position, and the traction machine 4 is moved.
If the operating lever of the lifting mechanism H is operated in the downward direction to rotate the lift arms 8, 8 downward, the device frame 1 will also move downward, and the grounding detector 39 will first touch the ground. Therefore, as shown in Figure 10, lift valve C
Since the spools c ₂ and a ₂ of the switching valve A are released from the pushing force of the pushing plate 39a, the pressurized air in the lifting cylinder 22 is discharged from the exhaust hole c ₃ of the lifting valve C to the atmosphere. , along with the retraction operation of the piston 22a, the tilling mechanism I
Since the air blowing body 10 also moves downward, the lower end of the air blowing body 10 immediately touches the ground. In addition, the pressure air in the air reservoirs 2 and 2 is controlled by the switching valve A.
The air is supplied to the striking piston 37 of the driving mechanism via the driving valve B, and the air blowing body 10 is struck to start the driving process, gradually crushing and expanding and softening the tiller. When the tilling mechanism I gradually moves down along the vertical rails 17, 17 and the air blower 10 penetrates to a predetermined depth as shown in FIG. Since the spool b is pushed, the pressurized air flowing from the switching valve A toward the striking piston 37 is closed, although not shown, and the driving stroke is completed.

Therefore, when the operator operates the control lever 43, the air jet valve D opens and the air tank 1
The pressure air of No. 2 flows from the passage g into the passage 10a of the air blowing body 10, and is vigorously ejected into the ground from the lower blowing holes 10b... to infiltrate the crushed plowing platform with air to sufficiently swell and soften it. I will do it. Once a predetermined amount of pressurized air has been ejected into the ground, the equipment frame 1 is lifted again by operating the operating lever of the lifting mechanism H, and then moved to the next work location. It will become. And this device frame 1
The spool _a2 pushing opening operation of the pushing piece 39a accompanying the separation of the grounding detector 39 from the ground surface during the lifting operation of the lifting valve C is simultaneous with the pushing opening operation of the spool _c2 of the lifting valve C, or It is necessary to adjust the operation to occur earlier than this, so that during the lifting operation, the switching valve A closes the passage to the driving valve B first, and the air blower This prevents the danger of dry firing due to the supply of pressurized air to the striking piston 37 during the lifting and pulling operations of the striking piston 37.

Incidentally, the above-mentioned driving mechanism 11, lifting mechanism 25, etc., other than the illustrated example, can sufficiently achieve the object of the present invention, and the switching valve A, driving valve B, lifting mechanism 25, etc. The upper valve C also has an air valve structure in which switching is performed directly by a grounding detector 39 as shown in the illustrated example, or an electromagnetically operated air valve is opened and closed by, for example, operating an electric switch using the grounding detector 39. It is also possible to have a structure in which Furthermore, although the air tank 12 is not shown, it may be provided, for example, on the side of the pressurized air supply mechanism G.

As mentioned above, the tiller expansion and softening device according to the present invention has the following features:
The tillage mechanism I penetrates the air blowing body 10 underground and blows pressurized air into it, and the pressure air supply mechanism G supplies pressurized air to the air blowing body 10. The equipment frame 1, which is mounted so that it can be raised and lowered, is configured to support the pressurized air supply mechanism G on one side in the left-right direction, and the tilling mechanism I on the other side. The tilling mechanism I and the pressurized air supply mechanism G, which are respectively provided on the left and right sides of the machine frame 1, are able to maintain sufficient balance in the left and right direction in this tiller expansion device.
When the equipment frame 1 in a suspended state is moved downward, the air blowing body 10 moves downward in a substantially vertical manner without tilting, and can penetrate vertically into the ground surface.
After the inflation and softening operation is completed, the device frame 1 can be smoothly raised without tilting when pulled out and lifted by the lifting mechanism H, and is suspended in a large overhang shape behind the traction machine 4. Since the horizontal balance of this tiller expansion device is sufficiently maintained, the stability of the traction machine 4 during movement can also be improved.

Moreover, in this invention, the air reservoirs 2 of the pressurized air supply mechanism G are arranged such that their longitudinal direction is the horizontal direction of movement of the device frame 1, and are held in the device frame 1 from below. Furthermore, since the front and rear parts are connected by reinforcing rods 55, the length of the tiller expansion and softening device in the front and back direction can be extremely shortened, further improving the turning performance. This made it convenient for turning between narrow fruit trees. Furthermore,
Although the present invention has a simple configuration, the air reservoirs 2, 2
... can be firmly guarded, and damage to the air reservoirs 2, 2 ... due to contact with trees etc. can be prevented. Furthermore, as described above, by forming the length in the longitudinal direction to be short, the turning performance is improved and the left-right balance when lifted is improved.

[Brief explanation of drawings]

The figures show one embodiment of the present invention; FIG. 1 is a side view of the tiller expansion and softening device, FIG. 2 is a perspective view of the same device, FIG. 3 is a rear view of the same device, and FIG. A plan view of the same device, FIGS. 5 and 6 are side views of the tilling mechanism in its respective operating positions, FIG. 7 is a rear view of FIG. 5, and FIG. 8 is a locking of the tilling mechanism in the lifted position. FIG. 9 is a side view of the main part of the tilling mechanism, FIGS. 10 and 11 are control circuit diagrams of the tilling mechanism, and FIG. 12 is a perspective view of the vicinity of the receiving plate.

[Explanation of symbols] 1...Equipment frame, 1a...Horizontal rod part, 1b...Rear connection part, 2...Air reservoir, 4...
... Traction machine, 7... Mast, 10... Air blower,
55... Reinforcement rod, H... Hanging mechanism, I... Tilling mechanism, G... Pressure air supply mechanism.

Claims (1)

[Claims] 1 Consists of a tillage mechanism that penetrates the air blowing body into the ground and blows pressurized air into it, and a pressure air supply mechanism that has an air reservoir that supplies pressurized air to this air blowing body, and is attached to a traction machine by a lifting mechanism. In a tiller expansion device in which a pressurized air supply mechanism is supported on one side of the machine frame in the left and right direction and a tilling mechanism is supported on the other side, the device frame is mounted so as to be able to rise and fall freely. The machine frame is formed so as to embrace the air pockets placed on the left and right sides of the machine body from below, and its rear end is raised to form a rear connecting part, and the rear connecting part and the front end of the equipment frame A tiller expansion and softening device characterized in that the tilling mechanism is connected to a mast erected in the section by a reinforcing rod, and the tilling mechanism is located on the left and right sides of the air reservoir.