JPS6310643Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the idea that an air blowing body is inserted into the tiller to restore the air permeability and drainage of the hardened tiller around the roots of crops such as fruit trees. The present invention relates to a driving speed control device in a tiller expansion device for ejecting pressurized air to expand and soften the tiller and supply air into the ground.

Since the air blower is repeatedly driven in and pulled out near the roots of fruit trees, etc., it can be driven quickly even when the tiller is hard, and without applying any lateral force to the air blower. I need to be able to do it.

Therefore, in this invention, we developed a tillage mechanism that penetrates the air blowing body into the ground and blows pressurized air into it, a pressurized air supply mechanism that supplies pressurized air to this air blowing body, and a lifting mechanism for the traction machine. A device frame suspended so as to be able to rise and fall; a guide mechanism that guides a tilling mechanism to the device frame so that it can move up and down in a straight line; and a guide mechanism that allows the tillage mechanism to move up and down along this guide mechanism. In a plowing platform expansion device comprising a lifting mechanism, a weight having a center of gravity on or near the vertical center line of the air blowing body is removably attached to the tilling mechanism, so that the air blowing body is straight. To,
However, it has been devised so that it can be driven quickly.

To explain one embodiment, as shown in Fig. 1 as a left side view, Fig. 2 as a perspective view, and Fig. 3 as a plan view, for example, the plan view of pipe material is approximately
A device frame 1 is formed of horizontal rod portions 1a, 1a shaped like letters and a rear connecting portion 1b with its rear center raised up, and air reservoirs 2, 2 are formed on the horizontal rod portions 1a, 1a. A compressor 3 is fixedly installed to form a pressurized air supply mechanism G that supplies the compressed air to a tilling mechanism I, which will be described later, using, for example, a hose. 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. Mast 7 with the rear part of link 6 erected on equipment frame 1
A top link 6 and a lower link 5, 5 of equal length are formed into parallel links,
The left and right lift arms 8, 8, which move up and down as the lift piston moves up and down, are connected to the lift rod 9,
When the lower links 5, 5 are raised and lowered via the lower links 9, the suspension mechanism H is constructed so that the device frame 1 always moves up and down in the same posture.

As shown in the rear view in FIG. 5, the air tank 12 is mounted on the driving mechanism 11 which has the air blower 10 provided at the bottom, and the mounting plates 13, 13 mounted on the left and right sides of the air tank 12 are Tilling mechanism I by pivoting slide bosses 14, 14, 14, 14
Then, the slide bosses 14 are loosely fitted into the vertical rails 17, 17 having a U-shaped cross section, which are set up on the receiving plate 16, so that the tilling mechanism I can move up and down in a straight line along the vertical rails 17, 17. The tilling mechanism I is supported on the machine frame 1 by a guide mechanism S made of, for example, the above-mentioned vertical rails 17, 17. At the bottom of the vertical rails 17, 17, there are mounting plates 18,
18 is fixedly installed, and a mounting plate 19 is fixedly installed as a bridge in the middle part of the vertical rails 17, 17.
The horizontal rod 15 is bridged and fixed, and the lower part of the lifting cylinder 22 is connected to the horizontal rod 15 via the bracket 20, and
The upper parts of the lifting cylinders 22 are respectively attached to the mounting plates 19 via the brackets 21, and in this way, the lifting cylinders 22 are installed near a position equidistant from the pair of vertical rails 17, 17, as shown in FIG. At the same time, the lifting cylinder 22 is placed as close as possible to the vertical rails 17, 17. A head 23 is attached to the top of the piston 22a of the lifting cylinder 22 so that its vertical position can be adjusted. The tilling mechanism I is constituted by a lifting mechanism 25 that linearly moves up and down along the vertical rails 17. As shown in a plan view in FIG. 3, 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. Front and rear rails 28, 28 having a U-shaped cross section are arranged and fixed in the front and rear direction on the horizontal frame 27, and rollers 29, 2 are mounted on the mounting plates 18, 18.
9, 29, 29 are disposed and pivoted in the front and back, 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, and the mounting plate 1
Spring 33, 3 is attached to the front stay 31, 31 of the stay 31, 31, 32 fixed to 8, 18 and the horizontal rod 26.
3, and opening grooves 28a, 28a provided in the front and rear rails 28, 28 and opening at the rear end.
A stay 34 is loosely fitted in the stay 34 and springs 35, 35 are stretched between the stay 34 and the rear stay 32 to prevent the tilling mechanism I from coming off the front and rear rails 28, 28.

The driving mechanism 11 is installed inside the guide tube 36 by tightly fitting the upper part of the air blowing body 10 into the inner hole 36a of the guide tube 36 fixedly installed at the lower part of the air tank 12, as shown in FIG. If the striking piston 37 strikes the head of the air blowing body 10 by a striking mechanism such as a known air hammer (not shown), the air blowing body 1
0 will be driven into the ground, and at this time, the tilling mechanism I will also move downward along the vertical rails 17, 17, and this striking piston 37
The supply of pressurized air from the air reservoir 2 to the piston of the lifting cylinder 22 is carried out by an air hose (not shown) via the switching valve A and the injection valve B as shown in FIG. The pressurized air to 22a is configured to be supplied to a lift valve C. That is, the third
As shown in the figure, a switching valve A and a lifting valve C are installed in parallel on the horizontal rod 26, and a grounding detector 39 is pivotally attached to a bracket 30 fixed to the horizontal rod 26 with a pin 38. As shown in Figure 9, push plate 39 of grounding detector 39
A is provided so that the respective spools a2 and c2 can be pushed by means of a spring 40 via the respective push levers a1 and c1 of the switching valve A and the lifting valve C, and in this state, the air reservoirs 2 and 2 are Pressure air is supplied to the lifting cylinder 22 via the lifting valve C, and the air pipe to the driving valve B is connected so as to release the pressurized air to the atmosphere, and the position where the receiving plate 16 is grounded is equipment frame 1
When the ground detector 3 is moved down, as shown in Figure 8,
9 allows the spring 40 to freely extend, so the push plate 39
a will be separated from spools a2 and c2,
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 supplied to the driving valve B via the switching valve A. The grounding detector 39 is provided near the grounding portion of the machine frame 1, for example, near the tilling mechanism I, or for supporting the opposite side of the tilling mechanism I in the left-right direction, as will be described later. It is provided near the stand 53 and can be provided on various members such as the lower part of the vertical rail 17. 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 the mounting bracket 41, and when the air blowing body 10 reaches a predetermined insertion depth, the actuating piece f is attached to the spool of the driving valve B. Although not shown in the drawings, the passage from the switching valve A to the striking piston 37 is closed. In addition, if the air jet valve D is attached to the guide cylinder 36 and the operating lever 43 provided near the driver's seat of the towing machine 4 is operated, the operating lever 42 is moved by the operating wire 44 to the spool d of the air jet valve D. Press and release the air jet valve D.
In order to open the ball d1, the air tank 1
The pressure air of 2 is supplied from the passage g to the passage 10a of the air blower 10, and is ejected from the lower ejection holes 10b.

As illustrated in FIG. 10, 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 collision with underground pebbles, for example, the large hole 1 of the receiving plate 16
Since the air blower 10 does not come into contact with the air blower 6a, the penetrating operation is performed smoothly, and
Due to the elasticity of the closing plate 45, this long air blowing body 1
0 will function as a guide for vertically inserting the lower part of the air blowing body 10 into the ground, supported by the hole 45a, and during the operation of penetrating into the ground, the air blowing body will be guided to some extent as described above. Even if there is a movement, the hole 45a always comes into close contact with the air blowing body 10, and after penetrating to a predetermined depth, the air blowing body 1
Since the pressurized air ejected from the nozzle 10b of No. 0 does not freely eject onto the ground surface through the small gap between the air blowing body 10 and the penetration hole formed in the ground around it, the pressurized air does not flow into the ground. It also helps to enhance the swelling and softening effect caused by the jetting action.

Also, although not shown, a rigid closing plate 45 is 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. A mounting seat 46 is formed on the top of the tilling mechanism I, for example, on the top of the air tank 12, and weights 47 are removably fixed to the mounting seat 46 with, for example, bolts 48. The number of 47 installed can be increased or decreased as necessary, and the center of gravity of the installed air blower 47 is formed so that it approximately coincides with the cylindrical center of the air blowing body 10 to help the driving force of the driving mechanism 11. The penetrating operation is made to be carried out quickly in response to the hardness and softness of the tiller. Further, as illustrated in FIGS. 5 and 6, a seat 49 with a pin hole 49a is fixed to the upper part of one vertical rail 17, and a pin hole 13a is also provided in the mounting plate 13 on the side closer to this. established, 6th
As shown in the figure, the piston 22a of the lifting cylinder 22 is projected upward to lift the tilling mechanism I to a position where the lower part of the air blower 10 hardly protrudes downward from the receiving plate 16, that is, the tiller is expanded. When the soft device is in a moving position, both pin holes 49a, 13a
For example, by inserting the fixing pin 50 into the tilling mechanism I.
can be fixed at the lifting position, the lift amount by the lifting mechanism H of the traction machine 4 can be reduced, and the tilling mechanism I can be prevented from moving unnecessarily during the moving operation.
In addition, the air reservoirs 2, 2 are fixed on the seat plate 51, and the stand 53 is attached to the cylinders 52, 52 fixed to the seat plate 51 with bolts 54, and the upper part of the mast 7 and the rear connecting part 1b are connected. A belt cover 56 for driving the compressor 3 and an air reservoir 2 are connected by a reinforcing rod 55.
etc. are protected by this reinforcing rod 55. and,
The PTO shaft 57 of the traction machine 4 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 at least the ground detector 39 is sufficiently far from the ground, and the spring 40 is released as shown in Fig. 9. Push plate 39
Since a pushes the spool c2 of the lifting valve C, the pressurized air in the air reservoirs 2, 2 is supplied to the lifting cylinder 22 through the lifting valve C, and its piston 22a protrudes to fully activate the tilling mechanism I. The air blowing body 10 will be lifted out of the ground. 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 a2 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, move the traction machine 4 to align the air blower 10 above the desired tilling position, and operate the operating lever of the lifting mechanism H of the traction machine 4 in the downward direction to move the lift arms 8, 8. When the machine frame 1 is rotated downward, the device frame 1 is also moved downward, and the grounding detector 39 is first grounded, so the spools c2 and a2 of the lifting valve C and the switching valve A are pushed as shown in FIG. Since the moving plate 39a is released from the pushing movement, the pressurized air in the lifting cylinder 22 is discharged into the atmosphere from the exhaust hole c3 of the lifting valve C, and the tilling mechanism I also moves downward with the retraction movement of the piston 22a. , the lower end of the air blower 10 is immediately grounded.

In addition, the pressurized air in the air reservoirs 2, 2 is supplied to the striking piston 37 of the driving mechanism 11 through the switching valve A and the driving valve B, and the air blowing body 10 is hit to complete the driving stroke. The plowing begins and the plowing plates are gradually crushed and expanded. And the tilling mechanism I is the vertical rail 1
7 and 17, and when the air blowing body 10 penetrates to a predetermined depth as shown in FIG. 5, the actuating piece f pushes the spool b of the driving valve B. Therefore, although not shown in the drawing, the pressurized air flowing from the switching valve A toward the striking piston 37 is closed, and the driving stroke ends. Therefore, when the operating operator operates the operating lever 43, the air jet valve D opens and the pressurized air from the air tank 10 is released into the passage G.
The air flows into the passage 10a of the air blowing body 10, and is vigorously ejected into the ground from the lower blowing holes 10b, causing the air to permeate the crushed plowing platform and sufficiently expand and soften 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. When the device frame 1 is lifted, the pushing piece 39a is moved away from the ground surface of the grounding detector 39.
It is necessary to adjust the push-opening operation of spool a2 to occur at the same time as the push-opening operation of spool c2 of lifting valve C, or earlier than this. First, the switching valve A closes the passage to the driving valve B, and the impact piston 37 is closed during the lifting and pulling operations of the air blowing body 10.
This prevents the risk of dry firing due to the supply of pressurized air.

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 operating, for example, an electric switch by the grounding detector 39. It can also be a structure. Also, grounding detector 39
Although not shown, it may be of a photoelectric type, for example.

As mentioned above, the penetration speed control device of this invention is
A tilling mechanism I that penetrates the air blowing body 10 into the ground and blows pressurized air into it, a pressurized air supply mechanism G that supplies pressurized air to this air blowing body 10, and a lifting mechanism H of the traction machine 4 that can be freely raised and lowered. A device frame 1 mounted so that In the tilling platform expansion device comprising a lifting mechanism configured as described above, a weight 47 having a center of gravity on or near the vertical center line of the air blower 10 is removably attached to the tilling mechanism I. Therefore, by attaching an appropriate number of weights 47 to the tilling mechanism I, the penetration speed of the air blower 10 can be changed and adjusted, and even in the case of a hard tilling platform, the penetration speed can be changed quickly. It is something. A weight 47 is placed on the center line of the air blowing body 10 in the vertical direction.
Since the center of gravity of the air blowing body 10 is located at
It is possible to penetrate straight and smoothly to a predetermined depth.

[Brief explanation of the drawing]

The figures show one embodiment of this invention, in which 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 plan view of the same device, and Fig. 4 is a side view of the tiller expansion and softening device. Figure 5 is a side view of the tilling mechanism; Figure 5 is a rear view of the tilling mechanism; Figure 6 is a rear view of the tilling mechanism;
The figure is a side view of the tilling mechanism locked in the lifting position, FIG. 7 is a cutaway side view of the main part of the tilling mechanism,
Figures 8 and 9 are control circuit diagrams of the tilling mechanism, Figure 10
The figure is a perspective view of the vicinity of the receiving plate. Explanation of symbols: 1...Equipment frame, 1a...Horizontal rod portion, 1b...Rear connection portion, 2...Air reservoir, 3...
Compressor, 4... Traction machine, 5... Lower link, 6... Top link, 7... Mast, 8...
Lift arm, 9...lift rod, 10...air blower, 10a, g...passage, 10b...spout hole, 11...driver mechanism, 12...air tank, 1
3, 18, 19...Mounting plate, 13a, 49a...
Pin hole, 14... Slide boss, 15, 26...
Horizontal rod, 16, 24...Socket plate, 16a...Hole, 17
... Vertical rail, 20, 21, 30 ... Bracket, 22 ... Lifting cylinder, 22a ... Piston, 23 ... Head, 25 ... Lifting mechanism, 27 ...
Horizontal frame, 28... Front and rear rail, 28a... Opening groove, 29... Roller, 31, 32, 34... Stay, 33, 35, 40... Spring, 36... Guide tube, 36a... Inner hole, 37...Blow piston, 3
8... Pin, 39... Earthing detector, 39a... Pushing plate, 41... Mounting bracket, 42... Operating lever,
43... Operating lever, 45... Closing plate, 46...
Mounting seat, 47... Weight, 48, 54... Bolt, 49... Seat, 50... Fixed pin, 51... Seat plate, 52... Tube, 53... Stand, 55... Reinforcement rod, 56... ...Belt cover, 57...PTO shaft,
58...Input shaft, 59...Universal joint shaft, 60,6
1...Pulley, 62...Transmission mechanism, A...Switching valve, a1, c1...Pushing lever, a2, c2, b,
d... Spool, B... Driving valve, C... Lifting valve,
D... Air jet valve, d1... Ball, e... Roller, f... Actuation piece, G... Pressure air supply mechanism,
H... Hanging mechanism, I... Cultivating mechanism, S... Guide mechanism.

Claims (1)

[Scope of utility model registration request] A plowing mechanism that penetrates the air blowing body into the ground and blows pressurized air into it, a pressure air supply mechanism that supplies pressurized air to the air blowing body, and a suspension mechanism that can freely rise and fall from the suspension mechanism of the traction machine. The tiller consists of an equipment frame, a guide mechanism that guides the tilling mechanism to the equipment frame so that it can move up and down in a straight line, and a lifting mechanism that allows the tilling mechanism to move up and down along this guide mechanism. A penetration speed control device for a plowing plate expansion and softening device, wherein a weight having a center of gravity on or near the vertical center line of the air blowing body is removably attached to the tilling mechanism.