JPS61293301A - Self-propelling type pneumatic soil conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention enables deep plowing to be carried out easily (W1) without causing cracks in the soil by towing and moving the soil improvement work machine with a self-propelled vehicle and powerfully blowing out compressed air at predetermined intervals into the deep layer of the soil. This relates to a self-propelled pneumatic soil improvement machine.

[Prior art] This type of self-propelled pneumatic soil conditioner itI! As an improved working machine, for example, as disclosed in Japanese Unexamined Patent Publication No. 59-42801 F4, there is a vertical blade body (a blower strut) in which a cylindrical conduit is fixed to the rear part of a plate-like frame extending in the front and back direction. ) is attached, and an auxiliary tank (rib tank) is attached to the top of this conduit to temporarily store the compressed air sent from the pressure accumulation tank (main tank), and a fumarole with a fumarole at the bottom of the vertical blade body is installed. The compressed air in the pressure accumulator tank is intermittently ejected into the soil from the fumarole through the auxiliary tank, and the fumarole is roughly installed at the rear end of the plate frame behind the vertical blade. Some models are equipped with a tail wheel (gauge wheel) that supports the aircraft by contacting the ground only when it is inserted into the ground. [Problems to be Solved by the Invention] The above-mentioned conventional soil improvement work machine (soil crushing and expanding device) is connected to a self-propelled vehicle via a three-point hitch IF mechanism, and works while being towed. f) When the field surface is flat and almost horizontal, the soil improvement machine does not move up and down, and its fumarole moves forward in an almost flat (horizontal) attitude with the surface, resulting in less traction resistance. Also, although no large load is applied to the attachment point with the vertical force body, if there are undulations on the field surface, the soil improvement work machine will rotate back and forth at the connection position with the three-point link hitch machine, causing the attitude of the fumarole to change. Not only will the traction resistance increase as the blower faces upwards or downwards, but also a large load will be placed on the mounting part, which may damage the fumarole, and the traces of the fumarole will be visible up and down. hand,
A part of the compressed air ejected from the fumarole is sent to the atrium G.
J. There was a problem that it was not possible to plow the soil sufficiently deeply.

[Means to solve the problem]

Therefore, in order to solve the above conventional problems, the present invention equips a self-propelled vehicle with a soil improvement work machine that can be raised and lowered via a three-point link hitch mechanism. A compressor, a tank that stores compressed air pressurized by this compressor, a fumarole that intermittently blows the compressed air supplied from this tank into the soil, and a fumarole that is fixed to the lower end of the aircraft. A fumarole column that protrudes well downwards, a support wheel that adjusts the depth of the fumarole when the fumarole column is in the soil, and a support wheel that detects changes in the front and back posture of the J5 soil improvement machine during work. A sensor 9 and an attitude control mechanism that is activated by the sensor 9 and controls the longitudinal attitude of the soil improvement machine so that the traction line of the fumarole in the soil does not become misaligned are installed.
).

[For production]

By having such a configuration, the soil improvement work machine of the present invention can be used even if the front and back posture changes during work.
By correcting the posture and controlling the traction line of the fumarole so that it does not become misaligned, the traction resistance of the fumarole does not become large, preventing damage to the fumarole, and reducing the loss of compressed air ejection. This is to ensure that this does not occur.

【Example】

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a well-known riding tractor (self-propelled vehicle), and a three-point link hitch machine WI4 consisting of a top link 2 and a pair of left and right lower links 3 is installed at the rear of the tractor 1. Rare. The soil improvement work machine 5 is connected via this three-point link hitch mechanism 4.
The device is designed to be able to go up and down. In the soil improvement work Ia5, a top mast 7 that connects the toss top link 2 marked tl'J and a pair of left and right lower link connecting pins 3a that connect to the lower link 3 are attached to the front of the pair of left and right main frames 6. <j, A top mast 7 is pivotally supported to the main frame 6 around the position of the connecting bin 3a, and is connected to the tractor 1 by a three-point link hitch mechanism 4 so as to be movable up and down. A compressor 8 having an input shaft 8a protruding forward is installed in the main frame 6#jJ. At the rear end of the main frame 6 behind the compressor 8, there is provided a main tank 9, numbered J, which is square in side view, extends long in the ring direction of the fuselage, and is hollow and also serves as a horizontal frame. This main tank 9 communicates with the compressor 8 via a communication vibrator (not shown). Also, main tank 9
The blower strut 11 is mounted via a mounting member 10 so as to protrude significantly downward. A fumarole 12 projecting forward is attached to the lower end of the fume strut 11. The input shaft 8a has 1
-: Power is transmitted from the Pro shaft 1a of the lid 1 via the extendable propen shaft 13. A rib tank 14 is fixed above the mounting member 10. This one-knob tank 14 communicates with the main tank 9 via a switching valve (not shown), and also communicates with an air supply pipe 15 attached to the back of the jet strut 11 via the switching valve. Although not shown, a control Vi is provided to switch both switching valves at a predetermined timing. A thin portion 11a is formed at the front end edge of the jet strut 11. Further, the fumarole 12 is attached to the lower end of the fumarole strut 11 and includes a base 12a that protrudes forward, a tapered portion 12b, a neck portion 12C1, and a sharpened portion 12d, which are sequentially formed on the tip side of the base 12a, A blowhole 16 is opened in the neck portion 12C, and a vent hole (not shown) communicating with the air supply pipe 15 is provided in the base portion 12a and the tapered portion 12b to communicate with the blowhole 16. ttJ A cutting blade 17 is provided at the front side along the front edge of the fume strut 11 and behind the fume port 16 . This cutting blade 11 has a blade edge 17a formed on the front edge, and has a bent part from the upper end to the front side, and a swing arm 18 is integrally connected to this bent part, and the connected part also serves as a horizontal frame. The main tank 9 is pivotally supported via a shaft 20 between a pair of left and right brackets 19 projecting downward from the main tank 9 so as to be vertically movable. The tip of the swinging arm 18 is supported by a swinging mechanism 21 shown in detail in FIGS. 2 and 3. The swinging mechanism 21 rotatably supports a spherical bearing 23 fixed to the tip of the swinging arm 18 at the bottom of the swinging plate 22, and also has a rotating shaft 24 at the top of the swinging plays 1 to 22. An eccentric cam 25 is attached at the same time, a bearing 26 is provided on the outer periphery of the eccentric cam 25, and a spherical bearing 27 provided on the outer periphery of the bearing 26 is rotatably supported. The rotating shaft 24 is a frame installed between the main frames 6.
Bearing member 2B supported by support frame 6a extending from
It has a pulley 29, and this boo 92
A belt 31 is stretched between the input shaft 9 and a pulley 30 provided on the input shaft 8a to receive rotational power. When the rotating shaft 24 rotates, the eccentric rotational motion of the eccentric cam 25 is transmitted to the swinging arm 18 via the swinging brake 1-22, and the cutting blade 17 is centered around the shaft 20 as shown in FIG. It is designed to swing back and forth. Brackets 3 are provided at both left and right ends of the main frame 6.
2 (one not shown) is suspended from this bracket 32
．． A shaft rod 33 is rotatably inserted between the shaft rods 32 , one end of a support arm 34 is fixed to both ends of the shaft rod 33 , and a support ring 35 is pivotally supported at the other end of the column arm 34 . On the other hand, a support frame 36 is provided to protrude upward from the main frame 6 above the support wheel 35, and a rotary piece 31 is attached to this support frame 36.
7, a screw rod 39 with a rotating handle 38 attached to its upper end;
is rotatably supported. The lower end of the threaded cylinder 40, which is threadedly engaged with the threaded rod 39, is pivotally supported by the intermediate portion of the support arm 34. The left and right support wheels 35 are simultaneously reversibly displaced by rotating the rotation handle 38. On the other hand, at the other end of a support arm 41 which has one end fixed to the tip of the main frame 6 and projects forward, a support rod 43a of a skid 43 is provided via a support tube 42 so as to be vertically adjustable. Potentiometer 4 on the rear top surface
4 is provided, and a lever rod 45 extending rearward from the potentiometer 44 is rotatably provided. A cord 46 connected to the potentiometer 44 is electrically connected to a solenoid valve of a hydraulic system (not shown) provided on the tractor 1. The sensor rod 45, which is provided behind the wheel 1b of the tractor 1, is weakly urged downward by a spring (not shown). A support frame 47 is erected on the main frame 6 behind the top mast 1, and the rear end of the hydraulic cylinder 4B is pivotally attached to the upper end of the support frame 47.
The tip of the piston 48a of No. 8 is pivotally connected to the pivot point 2b of the 1-tube link 2 at the upper end of the top mass 1-7. Note that a clutch mechanism may be interposed in the power transmission system of the swing mechanism 21. Next, the operation of the above embodiment will be explained. The soil mound improvement leaf cropping machine 5 is attached to the rear of the tractor 1 via a three-point link hitch mechanism 4, and is grounded by rotating the rotary handle 3B and rotating the support wheel 35 about the shaft rod 33. By adjusting the height to determine the depth of insertion of the fumarole 12 into the soil, and by adjusting the ground contact height of the skid 43 so that it is approximately equal to the ground contact height at which the support wheel 35 touches the ground, the fumarole 12 can be towed. Adjust so that the line DL (correct traction direction), that is, the direction of movement, is horizontal. In this state, the vertical movement of the three-point link hitch machine s4 is made free, and power is transmitted from the P1-0 shaft 1a of the h/lid 1 to the input shaft 8a via the propeller shaft 13 to drive the compressor 8. However, when it is towed by tractor 1,
The fumarole 12 is towed and moves forward in a state in which it is deep into the soil by a set depth until the support wheel 35 touches the ground. At this time, the pulley 30 rotates due to the rotation of the human power shaft 8a, causing the rotation shaft 24 to rotate at the same time via the belt 31 and the pulley 29,
The swing mechanism 21 operates to rotate the shaft 20 via the swing arm 18.
The cutting blade 17 is swung back and forth with a small stroke centering on the blade edge 17a, which cuts the soil and greatly reduces the traction resistance of the following fumarole column 11. The air compressed by the compressor 8 is stored in a main tank 9, and is further sent from the main tank 9 to a leap tank 14 where its pressure is stored. One batch of compressed air stored in the rib tank 14 is sent to the fumarole 1G of the fumarole 12 via the air supply pipe 15, and is ejected into the soil with great force, causing kupukku in deep soil failure and deepening plowing. At this time, the cutting blade 17 is swinging back and forth at a rear position away from the jet nozzle 16, so the compressed air jetted from the jet nozzle 16 is blown upward through the gap cut by the cutting blade 17. This kind of fumarole operation is performed intermittently by switching the switching valve by the control mechanism as the aircraft advances, and deep plowing work is carried out in the soil through which the fumarole 12 has passed. During such deep plowing work, if the field surface GL is flat (nearly horizontal), the tractor 1 and the one-break improved working machine 5 will move the three-point hitch mechanism 4 as shown in FIG. The senna rod 45 travels while maintaining a substantially constant posture through the skid 43, and the senna rod 45 slides on the field surface leveled by the skid 43, does not move up and down, and the hydraulic cylinder 48 does not expand or contract.
The propeller moves through the soil while keeping its traction line DL almost horizontal, has little traction resistance, and performs stable fume work. However, if the field surface GL has large undulations and the relative movement posture of the tractor 1 and the soil work implement 5 changes as shown in FIG. 4, the pivot point 2a of the three-point link mechanism 4,
2b, 3a, 3b positions and rotation at the pivot point 47a between the support arm 41 and the hydraulic cylinder 48, the front and back posture of the soil improvement work equipment 5 changes, and the traction line OL of the fumarole 12 changes upward or downward (as indicated by the dotted line). At this time, the soil improvement work 1fm 5 is tilted back and forth by rotating the senna rod 45 by the support rod 41 and skid 43 that tilt together, actuating the potentiometer 44, and transmitting the signal. This is transmitted to the solenoid pulp via the cord 46 and is actuated to extend and retract the piston 48a of the hydraulic cylinder 48 to rotate the soil improvement work machine 5 via the support arm 47 around the lower link hitch pin 3a. , the traction line DL of the fumarole 12 is corrected to be substantially parallel to the back surface GL of the W field so as not to cause misalignment. As a result, the traction resistance of the fumarole 12 is small (a large load is applied to the attachment base of the fumarole 12 to the fumarole strut 11, and the hole formed by the fumarole 12 becomes larger vertically, causing the fumarole This prevents the compressed air ejected from the 1G from blowing backward through the hole.The control of the forward and backward posture during this soil improvement work 95 will be explained in more detail with reference to Fig. 4.(a) , There is a mountain Y on the back GL of field m, and there is a self-propelled vehicle 1 and a soil improvement work machine 5.
and the three-point link hitch mechanism 4 act in the direction of separating from each other, the soil improvement work machine 5 tilts forward, and the traction line OL of the fumarole 12 tries to change in the direction of the dotted arrow, but at this time , the sensor rod 45 rotates in the downward direction to extend the piston 48a of the hydraulic cylinder 48, corrects the moving posture of the soil improvement work device 5, and corrects the traction #DL of the fumarole 12 in the direction of the solid line arrow. Blow-through of compressed air is prevented. In addition, (b) shows a case where there is a valley on the VIA field surface GL, and in this case, the self-propelled vehicle 1 and the soil improvement work 115 are approaching each other at the 4 positions horizontally of the 3-point hitch machine. As a result, the soil improvement work machine 5 tilts backward and releases the fumarole 1.
The traction line DL of No. 2 is about to change in the direction of the dotted arrow, but at this time, the senna rod 45 rotates in the upward direction and contracts the screw 1 hem 48a of the hydraulic cylinder 48, changing the moving posture of the soil improvement work machine. The traction IDL of the fume gas 12 is corrected in the direction of the solid line arrow to prevent blow-by of compressed air. In the above embodiment, the cutting blade 17 is not limited to one that swings back and forth, but may be configured to move up and down, or in a combination of up and down, and back and forth. Also, skid 4
3. The sensor rod 45, the potentiometer 44, etc. may be provided at other positions where changes in the moving posture of the soil improvement work machine 5 can be detected.

【Effect of the invention】

As explained above, according to the self-propelled pneumatic soil improvement machine of the present invention, the sensor detects the change in the front and back posture of the soil improvement work machine during work, and the sensor prevents the posture control mechanism from operating and improves soil quality. The forward and backward posture of the improved work equipment was controlled to prevent misalignment of the towing line of the fumarole, so the fumarole was always towed in a nearly constant position, and no excessive load was placed on the fumarole itself. to prevent damage. Moreover, since the path of the fumarole does not grow vertically, the compressed air does not blow backward from here, and the compressed air can properly plow deeply.

[Brief explanation of drawings]

Figure 1 is an overall side view of the self-propelled pneumatic soil conditioner, Figure 2 is a longitudinal sectional side view of the swing mechanism, Figure 3 is a sectional view taken along line I [-I in Figure 2, and Figure 4 is an action explanatory diagram. 1... Passenger type lid, 2... Top link, 2a
. 2b... Pivot point, 3... Lower link, 3a... Lowering connecting bin, 3b... Pivot point, 4... Three-point link hitch mechanism, 5... Soil improvement work machine, 6...・Main frame, 6a...Bracket 1~. 7...Top mass 1~. 8... Compressor, 9... Main tank,
10... Mounting member, 11... Fumarole strut, 11a...
・Thin width part, 12... fumarole, 12a... base, 12
b... Taper part, 12c... Neck, 12d... Pointed part, 13... Probef shaft, 14... Leap tank, 15... Air supply pipe, 1G... Fumarole, 17・
... Cutting blade, 17a... Blade edge, 18... Swinging arm, 19... Bracket, 20... Shaft, 21... Swinging mechanism. 22... Swing plate, 23.27... Spherical bearing, 24... Rotating shaft, 25... Eccentric cam, 26...
Bearing, 28...Bearing member, 29.30...Pulley, 31...Belt, 32...Bracket, 33
... Axial rod, 34... Support 7-m, 35... Support wheel, 36... Support frame, 37... Rotating piece, 3B.
...Rotating handle, 39...Nejisha, 40...Screw tube, 41...Support arm, 42...Support tube, 43.
... Skid, 43a... Support rod, 44... Potentiometer, 45... Sensor rod, 46... Cord, 47... Support arm, 47a... Pivot point, 48
... Hydraulic cylinder, 48a... Piston, GL...
- Field surface, DL... traction line of fumarole, Y... peak, 1... trough. Procedural amendment (method) October 24, 1985 Q'*3'F Office Q'M -i= -n
Road SR< Tonosho 11160 Patent Application No. 1
37553 No. 2, Title of invention: Self-propelled pneumatic soil improvement machine 3, A Sanno wo Jiru Uran - Relationship to the case Patent Applicant: 6871-4 Nakaku, Okayama City, Okayama Prefecture, Agent 6, Drawings subject to amendment Figure 1, Figure 7, details of the amendment Figure 1 will be revised as shown in the attached sheet.

Claims (1)

[Claims] A soil improvement work machine is installed in a self-propelled vehicle so that it can be raised and lowered via a three-point link hitch mechanism, and the soil improvement work machine includes a compressor and a tank for storing compressed air pressurized by the compressor. A fumarole that intermittently blows compressed air supplied from this tank into the soil, a fumarole column that attaches this fumarole to the lower end and protrudes long downwards from the aircraft, and a state in which the fumarole column is in the soil. A support wheel that adjusts the plowing depth of the fumarole, and a sensor that detects changes in the front and back posture of the soil improvement work equipment during work. A self-propelled pneumatic soil improvement machine characterized by being provided with a posture control mechanism that controls the front and back posture of the soil improvement work machine so that the soil improvement machine does not move.