JPH03103104A - Soil-improving working machine of self-traveling and riding type - Google Patents

Abstract

PURPOSE:To enhance traveling property with softening soil of every sides of left and right or front and rear of car body at once by installing air-sprouting nozzle unit through supporting arms projecting to back and forth of posts at left and right sides of car body as center. CONSTITUTION:Posts 402 are symmetrically stood at left and right sides of a car body and an air-spouting nozzle unit 600 is installed in vertically movable state by supporting arms 405 and 406 projected to back and forth directions at the posts as a center. Other equipments on the car body are also arranged equally in left and right or back and forth directions. Thus, region to be spouted of air from spouting nozzle part of the spouting nozzle unit is able to be widened regarding to the car body and traveling property of the car is also excellent.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a riding-type soil improvement work machine, and more specifically, to a riding-type soil improvement work machine, which is capable of efficiently performing fume work, and which has improved running performance by averaging the load applied to the running part. Regarding type soil improvement work equipment.

[Conventional technology]

It is highly desirable to swell and soften fields that are under continuous cropping or that have become hard due to the pressure of tractors, etc., in order to increase the water permeability and water holding capacity of the soil and promote crop growth. , and supplying air into the soil is
It is very useful in promoting the growth of bacteria in the soil and promoting the decomposition of organic matter.

Therefore, many devices and devices have been proposed for expanding and softening soil by explosively supplying compressed air into the soil, and for multiplying bacteria by supplying air.

Among the many conventional examples, the typical prior art is:
Japanese Patent Publication No. Sho 63-1 0962 can be mentioned. In the system shown here, a fume work device that blows compressed air into the soil is attached to a tractor via a three-point lock mechanism, and the fume work device is moved up and down via the lift arm of the tractor. This fume work device is configured to lower the fume nozzle and insert it deep into the soil when a grounding signal is obtained from the grounding sensor to blow compressed air into the soil.

This fume work machine performs fume work on working soil using a fume work machine towed by a tractor, and the main work soil is so-called farm fields such as rice fields and fields.

Supplying air to the soil is effective not only in the fields mentioned above, but also in golf courses where turf is important, especially for soil management around greens.

That is, supplying air into the soil that forms the green is particularly effective in helping the growth of the grass and keeping the grass in good condition at all times.

[Problem to be solved by the invention]

However, even though it is recognized that it is beneficial to carry out blow work on greens, it is not possible to run the conventionally known blow work machines as described above on the greens of golf courses.

In other words, the grass on the green is soft, so if the tractor runs over this area, the grass will be crushed, causing the grass to wither, and in order to perform the blowing operation, the tractor must repeatedly go and stop at relatively short pitches. However, there remains the problem that the grass is torn up by the drive reaction force every time the vehicle starts and stops, or the grass is cleaned by the stop reaction force.

In particular, the rear wheels of a tractor carry a lot of their own weight, and when the tractor runs around on the green, the grass is crushed by the load of the rear wheels. The problem remains that the reaction force generated at this time is concentrated on the wheels of the tractor and applied to the grass, crushing the grass.

Moreover, it is possible to quickly perform blowing work on each green of a large golf course without affecting golf play.
To protect the turf, the driver runs slowly on the green and starts off.
It is also required that the grass is not affected by the reaction force when stopping.
Furthermore, once the work equipment is placed on the green, in order to avoid damaging the grass, it is necessary to avoid unnecessary movement of the work equipment.
It is necessary that the work flow line be as short as possible.

Therefore, this invention makes it possible to protect the grass by preventing the load generated from blowing, etc. from concentrating locally, and by selecting the blowing pressure, it is possible to cover a wide area with a single blowing. It can efficiently supply air to the ground,
The purpose is to uniformly distribute the load on the traveling parts, to provide good traveling performance on rough terrain, and to improve work efficiency even if the traveling speed is slow.

[Means to solve the problem]

In order to achieve the above-mentioned objects, the present invention provides a compressed air source formed by an engine and a compressor driven by the engine, a hydraulic power source formed by an engine and a hydraulic pump driven by the engine, etc. A self-propelled riding type soil improvement work machine configured by mounting on a vehicle body includes at least a lifting hydraulic drive system for raising and lowering the fume nozzle unit with respect to the ground, and a lifting hydraulic drive system for pulling out the fume nozzle portion of the fume nozzle unit from the ground. and a hydraulic drive system for driving the self-propelled wheels, and the jet nozzle unit has a hammer section on its upper part for driving the jet nozzle part into the ground to a predetermined depth. In this case, the pressurized air from the pressurized air source can be emitted from the ejector nozzle,
Posts are provided at symmetrical positions on both left and right sides of the vehicle floor and at intermediate positions in the longitudinal direction of the vehicle body, and support arms projecting in the longitudinal direction of each post and having one end pivotally connected to the post and the other end pivotally connected to the jet nozzle unit. It is characterized by being supported so that it can be raised and lowered freely.

[Created for]

The soil improvement work machine of the present invention has posts symmetrically set up on both the left and right sides of the vehicle body, and is equipped with a jet nozzle unit that can freely move up and down by means of support arms that extend forward and backward around the posts. Since the equipment on the vehicle body is also arranged in a well-balanced manner, the range of the jet from the jet nozzle of the jet nozzle unit can be widened in relation to the vehicle body, and the load applied to the running section is distributed. Prevents localized concentrated loads.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, in these figures, the code l00 is self-propelled and
It shows a passenger-type vehicle body, has wheels as a running part, the front wheels are drive wheels 101, the rear wheels have steering wheels 102 for steering, and the wheelbase and front and rear treads are approximately equal. At the rear end of the vehicle body 100 there is a seat lO3 for the operator to board.
There is a handle wheel 104 facing this seat 103, and this handle wheel 104
The operating sections 105 of each part are arranged in front of the vehicle, so that the operating sections 105 can be operated and visually recognized while steering the vehicle.

Further, an engine 200 is mounted on the left side of the front end of the vehicle body 100, and the output of this engine 200 drives an oil pump 203 via a transmission system 2011, a coupling 202, etc. A drive shaft branches off from the middle of the drive system of the oil pump and extends in the vehicle width direction, and transmits power to the drive system of a hammer portion 520, which will be described later.

Further, a mechanical engine 300 is mounted at the center of the front end, and its output drives a compressor 301 via a belt 302. A pair of reinforcing bars 106 are attached from both sides to the front of the handle wheel of the vehicle body 100, and this reinforcing bar toe can be used as a reference while driving. It has a function.

A hydraulic cylinder 401 constituting a lifting hydraulic drive system 400 that lifts and lowers a jet nozzle unit, which will be described hereinafter, at an intermediate position between the wheel bases on both sides of the vehicle body l00.
A post 402 is installed vertically along the side of the hydraulic cylinder 401, and this post 402 also serves as a pressure storage tank, which will be explained later. One end of a wire 404 is fixed to both left and right ends of this bracket 403, respectively. The other ends of these wires 404 are connected to the post 4 via a pulley 404A.
The support arm 405 is fixed to the inner upper support arm 405 of the support arms 405 and 40B, which are provided so as to project symmetrically in the longitudinal direction on both sides of the 02, and whose ends are pivotally supported.

The other ends of the support arms 405 and 40B are pivotally supported on the side surface of a guide cylinder 501 that constitutes the jet nozzle unit 500. tube 502
is inserted. Inside this support tube 502 is a driven pipe 50 having a blow nozzle portion 503 at its lower end.
4 is housed in such a way that it can move only in the vertical direction without shifting from side to side.

As shown in FIG. 4, one end 505A of a bellows-type elastic boot 505 is fixed to the lower end of the guide cylinder 501, and the other end 505A of the elastic boot 505
A post 506 is fixed to B, the center of the boss coincides with the center of the guide cylinder 501, and a swivel bearing 507 is fixed inside the boss 506.

A hollow support shaft 508 fixed to the guide cylinder 501 passes through the center of this swivel bearing 507.
is loosely running through it.

The boss 506 has a larger contact area than the tire.
A ground support plate 509 is fixed to expand the ground contact area, and a jet nozzle portion 503 is fixed to this ground support plate 509.
A hole 509A is bored on the extension line of the hole 509A. Therefore, the ground support plate 509 always maintains a state perpendicular to the guide cylinder 501 due to the elasticity of the elastic boots 505, but it is not possible to tilt the ground support plate 509 back and forth or left or right in the range of about 10 to 15' about the swivel bearing 507. can.

One end portion 510A of a hydraulic cylinder 510 for drawing out that constitutes the hydraulic drawing system 700 is pivotally supported on the side surface of the guide cylinder 501, and the folded end portion 510B of this hydraulic cylinder is connected to the upper end of the driving pipe. The casing 521 of the hammer part 520 disposed in the
The driving pipe 504 is driven in by the action of the hammer part 520, and the driving pipe 504 is driven in by the action of the hammer part 520.
04, the blowing nozzle portion 503 is pulled out by extending the pulling hydraulic cylinder 510.

The hammer part 520 has a casing 521 constituting it.
A drive shaft 522 is installed across the internal space,
This drive shaft 522 has an eccentric cam 523 that acts as a hammer.
A drive shaft 522 and an input chain wheel 524 for transmitting rotational torque to the eccentric cam are attached to the end thereof. This human-powered chain wheel 524
Chain 525X is suspended from
The chain case 525 covering the 25X is centered around the connecting shaft 525A to allow vertical movement of the jet nozzle unit.
26, and the other chain case 526 mentioned earlier is connected to the end of this chain case 525 by a connecting shaft 525A, and the chain case 525 is connected to the connecting shaft 525A. Chain wheel 525B that suspends 525X, and chain f! that suspends chain 52Bx-t-chain housed in chain case 526. 52
6A are each fixed. The opposite side of this chain 526x is suspended from a chain wheel 526B attached to the inside of the other end side of the chain case 526.
B is fixed to a drive shaft 527 branched from the drive system 201 of the oil pump, and is driven by power from the engine 200 input to the drive shaft 527. From this drive shaft 527, a chain wheel 528^ is passed through the chain 528 to another chain case, in other words, the chain case 5 is arranged symmetrically about the post 402.
The power is distributed to the chain wheel 528B at the lower end of the chain wheel 528B to drive the drive system inside the chain wheel.

Due to the eccentric length (H center Kai) of the eccentric cam 523, the Tsukuda cam 523 can strike the striking portion 504A of the driving pipe 504.
This striking part 50
4A is always pushed up by the push-up spring 504B to push the driving vibe 504 upward, but when the jet nozzle unit is not in contact with the ground, a gap is created between the eccentric cam and the striking part 504A, and the eccentric cam Even if 523 is rotating, it will not hit.

In addition, a pressure storage tank 601 which also serves as a post 402 is connected to an operating valve 602 and a pressure air supply pipe 603.
, a hole 521A made in the side surface of the casing 521
A joint 603 that communicates with the internal driving pipe 504
A jet air supply system 600, which will be described later, is formed to supply pressurized air to the driving vibe 504 through A and 603B.

Next, the fume nozzle unit 500 is raised and lowered from the ground, and the fume nozzle section 503 of the fume nozzle unit 500 is
and a hydraulic drive system 70 as a power source for pulling out the driving pipe 504 from underground and driving it to travel.
0 will be explained.

First, the hydraulic bomb 203 is controlled by a solenoid via a check valve 711 and reaches a 3-position, 4-way type switching valve 712 that has direct flow, stop, and reverse flow control valves.
A withdrawing hydraulic conduit 710 is connected to a double-acting withdrawing hydraulic cylinder 510 connected in parallel from 12 and returning to an oil tank 714 .

Further, in parallel with this extraction hydraulic pipe line 710, a lifting hydraulic pipe line 730 leading to the lifting hydraulic cylinder 401 is connected to the hydraulic bomb 203.
30 circulates to the oil tank 7!4.

This lifting hydraulic line 730 is branched from the check valve 711, and has a 3-position, 4-way type switching valve 731 that is solenoid controlled and has positive flow, stop, and reverse flow positions. , a hydraulic conduit connected to the double-acting lifting hydraulic cylinder 401 and further returning to the oil tank 714.

Furthermore, relief valves 701 and 715 are connected between the discharge side of the hydraulic bomb 203, the switching valve 712, and the extraction hydraulic cylinder group.

Along with these hydraulic conduits, a traveling hydraulic conduit 750 as a self-propelling power source is provided. This running extraction pressure pipe 750
is a normal flow, a stop, and a stop in the pipeline extending from the hydraulic bomb 203
A 3-position, 4-way, manual, and fixed-position travel switching valve 751 with a reverse flow positive cylinder is connected, and a check valve 752 is connected to the output side and the return side of the travel switching valve 751, respectively. Relief valves 753, 75 via 754
Check valves 75B and 757 are connected to the discharge sides of these relief valves 753 and 755, respectively. These check valves 756, 757 are connected to the discharge side pipe line and the return side pipe line, and are connected to the relief valve 753,
A circulation path including 755 is formed.

Further, from the check valves 752 and 754, pipe lines are extended to connect to two oil motors 758 and 759 which are connected in parallel to each other.
The front wheels 101 are driven by rotational torque of 9.

The travel selector valve 751 allows an operator seated on the seat 103 to select one of the three positions manually or by pressing the foot.

Further, the telescopic end portion 5 of the hydraulic cylinder 510 for extraction is
A switch 811 for detecting an extended state is attached to 10B, and these switches 811 are connected in series, and come into contact with a contact point 812A of a switch circuit 812 when the hydraulic cylinder is fully extended. . This switch circuit 812 includes a toggle type main switch 813 with two contacts 813A. 813B can be selected. This switch circuit 812 includes vertical movement control switches 814 and 815 for controlling the movement of the lifting hydraulic cylinder 401.
There are vertical movement control switches 814 and 815 with contacts 814A, 814B and 815A, 815B.
can be selected. Contacts 814A, 81
4B are respectively connected to the solenoids of the extraction switching valve 712, and contacts 815^ and 815B are connected to the summer solenoid of the lifting switching valve 73, and the control circuit 8
00 is configured.

Further, the blow control circuit 900 that supplies pressurized air to the blow nozzle unit 500 has a compressor 301 with an unloader driven by the engine 300, and from this compressor 301 pressurized air is supplied to the blow nozzle units 500 arranged on the left and right. It is intended to supply
A fume supply system 600 that extends from a pressure accumulation tank 801 to the fume nozzle unit 500 via an air operated valve 602 that has a communicating body 602A and a block body ridge 602B and is always offset to a block positon.
The purpose is to control the

An air cleaner 911 is connected to a conduit communicating from the pressure accumulating tank 801 of the fume supply system 600, and a regulator 912 is connected in series to the air cleaner 911. Further, the air cleaners 91, 1 are equipped with unloaders 913, 914 for setting different pressures, respectively.
915 and the relief valve 91B are connected in parallel to each other.

The pressures set on these unloaders are, for example, 9, 7,
They are determined differently from each other, such as 5 kilograms ●p ● square hinch. The output side of the two unloaders 913 and 914 with high set pressures is the first stage injection pressure selection valve 9.
The output side of the first stage injection pressure selection valve 92l and the output side of the unloader 915 having a low set pressure are connected to the second stage injection pressure selection valve 922. These jet pressure selection valves 921 and 922 are all manual types, and the output side of the second stage jet pressure selection valve 922 is connected to the jet starting valve 823, and this jet Oi1 starting valve 923 is connected to the jet starting valve 823. It is connected to the drive end of the air operated valve 602 in the supply system. Reference numeral 924 in the figure indicates a pressure gauge that indicates the pressure of the jet emitted from the jet nozzle 503.

Furthermore, an opening/closing control circuit 950 that drives the air operated valve 602 extends from the jet injection start valve 923,
Drive position from the stop position 923^ of the blowstart valve
When switched to Lin 923B, compressor 301
Air pressure from the opening/closing control circuit 950 switches the air operated valve 602 to the communication position 602A against the counter spring.

Further, the jet pressure set value determined by the unloader group is transmitted by a compressor control circuit 970 extending from the input end of the jet start valve 923 to the unloader of the compressor 301.

Next, the actual operation using the jet nozzle device of the riding-type soil improvement machine according to the present invention will be explained. First, the rider-type soil conditioner is driven to the destination of the fumarole work, for example, to the green of a golf course, and then boarded. The work equipment is moved by rotating the oil bomb 203 with the output of the engine 200 and driving the drive wheels 101 with the output.In addition to driving the oil pump 203, the compressor 30! is driven to store air at a predetermined pressure in the pressure storage tank 601, which serves as a source of pressurized air.

At the start of work, the support arms 405 and 406 whose ends are supported by the post 402 are moved from the state of FIG. 3(A) to the state of FIG. 3(B) by extending the lifting hydraulic cylinder 401 via the wire 404. Even if each of the 4' jet nozzle units 500 comes into contact with the ground with a difference in height by rotating the jet nozzle unit 5,
00 is absorbed by the change in the slack of the fire 404, and the jet nozzle unit 500 that touches the ground first does not interfere with the jet nozzle unit 500 that touches the ground later.

The grounded fume nozzle unit 500 has its own weight supported by the support plate 509 that is grounded on the green.
The ground contact position is determined as the driving position of the driving pipe. In addition, the unevenness of the green is caused by the elastic boots 505 of the ground support plate 509 provided on each jet nozzle unit 500.
Since it is supported by the swivel bearing 507, it is absorbed by tilting within an appropriate range. When the jet nozzle unit 500 is suspended in the air, the elasticity of the elastic boot 5050 keeps the ground support plate 509 substantially perpendicular to the driving direction.

After the blow nozzle unit 500 is in the grounded state, the chain case 525 shown in detail in FIG.
Chain 625X. The drive shaft 522 drives the eccentric cam 523 that constitutes the hammer section 520 located at the top of the jet nozzle unit 500 via the shaft 526X. At this time, when the striking part 504A of the driving pipe 504 contacts the eccentric cam 523 when the lower end of the driving vibrator 504, in other words, the jet nozzle part touches the ground and the weight of the hammer part etc. is applied, the driving pipe 504 Due to the rotation of the eccentric cam 523, the blast nozzle portion 503 is struck into the green ground through the hole 509A of the ground support plate 509, and reaches a predetermined depth as shown in FIG. 3(C).

The lifting hydraulic cylinder 401 is operated as follows. First, in FIG. 3(C), the extraction hydraulic cylinder is in a contracted state, the jet nozzle part 500 is underground, and from this state, the main switch 813 is closed to the contact point 81.
3B and further select the contact point 814B of the vertical movement control switch 814, the solenoid of the extraction switching valve 712 is energized and its position is switched from the block position 712A to the reverse flow position 712X, and the extraction cylinder 510 is switched to the reverse flow position 712X. extends in the stretching direction. And the telescopic end 5lOB at the upper end is the switch 81.
1 will close the contact 812A. The jet nozzle portion is pulled out from underground by the pulling cylinder 510 (FIG. 3B). Then, when the main switch 813 of the control circuit 800 shown in FIG. Then, the block position 731A is switched to the reverse flow position 731x, and the lifting cylinder 401 starts to contract, raising the jet nozzle unit 500 (FIG. 3A).

This time, in order to lower the jet nozzle unit 500 in the ascending state, contrary to the above, first switch the vertical motion control switch 815 to the contact 815A, and then switch the elevation changeover valve 713 to the normal flow body cylinder 731Y. 5, the lifting hydraulic cylinder 401 is extended and the jet nozzle unit is opened.
00 is lowered. When the jet nozzle section 503 is in the grounded state, driving by the hammer section 520 is started. Due to this driving action, the drawing cylinder 510
The oil acting in the direction of extension is removed by the extraction switching valve 712.
The oil is returned to the oil tank 714 from the reverse flow position 712X.

Then, when the fume nozzle part 503 reaches a predetermined depth, the fume work is performed (the fume work will be described later).
. After that, by the above-mentioned pulling operation, the jet nozzle part 503
When the main switch 813 is switched to the contact 813B and the vertical movement control switch 814 is switched to the contact 814A, the normal flow position 712Y of the extraction selector valve 7 2 is selected and the extraction is carried out. The hydraulic cylinder 510 contracts to perform a pulling action.

When the jet nozzle section 503 is underground, the extraction cylinder 510 is in a contracted state, all contacts 812A of the switch circuit corresponding to the extraction cylinder are listening, and the main switch 813 is switched to contact 8+3A. However, the switch circuit 8!2 is in an open state, and even if the vertical motion control switch 815 is operated, the vertical movement hydraulic conduit 730 is moved in the direction that drives the vertical hydraulic cylinder 401, in other words, the vertical movement control switch 815 is operated. The drive current that changes the switching valve 731 to the forward flow position 731Y does not flow. In other words, the lifting hydraulic cylinder 401 is not driven when the fume nozzle part 503 is not extracted from the ground. In other words, after the fume nozzle part 503 is completely extracted from the ground and the extraction is completed. For the first time, the hydraulic cylinder for lifting and lowering became operational and is now functioning as a safety device.

Next, the fumarole work will be explained. First, engine 80
The compressor 301, which is driven at 0, accumulates pressure until it reaches a predetermined pressure, and when the pressure exceeds that, the unloader acts to eliminate the load on the compressor. Then, in the operating section 105, unloaders 913, 914, 91 with different set pressures are installed.
5, for example, unloader 9.
When injecting at the set pressure of 13, the first stage injection pressure selection valve 9
2! is set to the positive flow position 921A, and the second stage jet pressure selection valve 922 is switched to the positive flow position 922A.
Pressure is applied to the fume starting valve 923 through this, so if the fume starting valve 923 is manually opened using the operation unit 105, the flow of pressurized air will be controlled by the opening/closing control circuit 95.
0, the air reaches the air overrate valve 602, switches the block position 602B to the communication position 602A, and blows the air from the blow nozzle part 503 into the ground. At this time, since the pressure accumulation tank 601 supplies pressurized air to the two fume nozzle parts, the air tends to be ejected to the side with less resistance. good.

In addition, when performing the fume work with the fume pressure set to the unloader 915 with the lowest set pressure, the second stage squirt pressure selection valve 922
This is carried out by switching the position from the communication position 922A to the reverse flow position 922B and switching the blowstart valve 923. When selecting an intermediate set pressure, the first stage injection pressure selection valve 921 is changed from the communication position 92IA to the reverse flow position 921B, the second injection pressure selection valve 922 is left in the communication position 921A, and the injection pressure start valve 923 is operated. In other words, pressurized air is ejected from the ejector nozzle portion 503 by manually pushing in the ejector start valve 923 . The set value (air pressure) set by the unloaders 913, 914, and 915 is transmitted to the compressor control circuit 970.
The unloader of the compressor is operated via the compressor, and when the set pressure is reached, the compression function is canceled.

〔Effect of the invention〕

As is clear from the above description, according to the riding type soil improvement work machine of the present invention, posts are symmetrically set up on both the left and right sides of the vehicle body, and supports projecting in the front and rear direction around the posts. A blow nozzle unit is installed via the arm, and equipment on the vehicle body is also arranged in a well-balanced manner in the left, right, front and rear directions, so air is supplied in a well-balanced manner to a fixed area centered on the stopping position of the work equipment. It is possible to expand and soften both the left and right sides of the front and back at the same time, and it is also possible to distribute the load in a well-balanced manner when driving the jet nozzle part, especially when pulling it out, and it is possible to prevent localized load concentration on the grass, etc. Furthermore, it has the effect of making the entire work machine smaller and lighter.

[Brief explanation of drawings]

The attached drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a riding type soil improvement machine equipped with a fumarole nozzle device, Fig. 2 is a plan view of the same, and Fig. 3 shows the working order of the fumarole nozzle device. Explanatory drawings, Fig. 4 is an enlarged cross-sectional view of the section ■ in Fig. 1, Fig. 5 is a hydraulic circuit diagram showing the lifting hydraulic drive system, extraction hydraulic drive system, and hydraulic travel system, and Fig. 6 is a diagram of the jet fuel supply system and its FIG. 7 is an explanatory circuit diagram showing the control system, and FIG. 7 is an explanatory diagram of the impact power transmission system of the driving vibrator. 100... Vehicle body, 101... Drive wheel, 102...
... Steering wheel 103 ... Seat, l04 ... Handle wheel, 105 ... Operation section 106 ...
Reinforcement bar 200...engine, 20l...conduction system, 202...coupling, 203...oil pump 300...engine, 301...compressor, 302... Belt, 400...Hydraulic drive system for lifting, 40I...Hydraulic cylinder for lifting, 401A...Telescopic end 402.
...Post, 403...Bracket, 404...
...Wires 405, 408...Support arm, 500...Blow nozzle unit, 501...Guide cylinder, 502...Support tube, 503...Blow nozzle part, 504...・・・
Driving pipe, 504A...Blowing part, 504B...
... Push-up spring, 505 ... Elastic boots, 505A
...One end, 505B...Other end, 506...
... Boss, 507 ... Swivel bearing, 508 ...
...Support shaft, 509...Ground support plate 509A...
...Hole, 5lO...Hydraulic cylinder for extraction, 51
0A... One end part, 510B... Telescopic part, 520
... Hammer part, 52l ... Casing, 522.
... Drive shaft, 523 ... Eccentric cam, 524 ...
・Input chain, 525x...Chain, 525A...
...Connection shaft, 525B...Chain wheel, 526...
・Chain case, 526A, 528B...Chain wheel, 526X...Chain, 527...Drive wheel, 528...Chain, 528A, 528B...
... Chain wheel 600 ... Fumes supply system, 601 ... Pressure accumulation tank, 602 ... Air operated valve, 6o3 ... Pressure air supply pipe, 603A, 603B ... Joint 7
00... Hydraulic drive system for extraction, 710...
Hydraulic pipeline for withdrawal, 70I...Relief valve, 7 Port...Check valve, 7I2...Switching valve for withdrawal, 7
I4...Oil tank, 715...Relief valve, 730...Hydraulic line for lifting/lowering, 73I...Switching valve for lifting/lowering, 750...Hydraulic line for traveling 751... ... Travel switching valve, 752, 754...
・Check valve 753, 755... Relief valve, 756
, 757...Check valve, 758, 759...Oil motor 800...Control circuit, 81■...Switch, 812...Switch circuit, 812A...
・Contact, 813... Main switch, 8I3^, 8
138... Contact, 814, 815... Vertical movement control switch 814A. 814B, 815A, 81
5B... Contact 900... Fumes control circuit, 911
...Air cleaner, 912...Regulator,
913, 914, 915... unloader, 916...
...Relief valve, 921...1st stage injection pressure selection valve,
922...Second stage jet pressure selection valve, 923...Fuel start valve, 924...Pressure gauge 950...Opening/closing control circuit, 970...Compressor control circuit -4l-49 −

Claims (1)

[Claims] (1) A self-propelled passenger type that is configured by mounting on the vehicle body a compressed air source formed by an engine and a compressor driven by the engine, and a hydraulic power source formed by an engine and a hydraulic pump driven by the engine. A soil improvement work machine includes at least a lifting hydraulic drive system for raising and lowering the fume nozzle unit with respect to the ground, a pulling hydraulic drive system for pulling out the fume nozzle portion of the fume nozzle unit from underground, and self-propelled wheels. The fume nozzle unit has a hammer part on its upper part for driving the fume nozzle part into the ground, and when the fume nozzle part is driven into the ground to a predetermined depth, it blows the pressurized air from the pressurized air source into the fume. Fumes can be emitted from the nozzle part, and posts are provided at symmetrical positions on both left and right sides of the car body and at intermediate positions in the longitudinal direction of the car body, and each post extends in the front and rear direction, with one end serving as a post and the other end serving as a fume nozzle unit. A self-propelled riding type soil improvement work machine characterized by being supported so that it can be raised and lowered by a support arm that is pivotally connected to a support arm.