JPH0349614A - Mowing vehicle for incline - Google Patents

Abstract

PURPOSE: To keep a vehicle body in a nearly vertical position in response to the variation of a land form by keeping a vehicle at a vertical position and floating a mowing housing with respect to a side part frame. CONSTITUTION: When a mower enters a slope and tilts to left, a steel ball 17p is brought into contact with a sensor within the first tip part of a pipe to operate an electrical main level valve 128 to open a second auxiliary boat 152. Then a pressurized fluid is made to flow into a passage 171 through passages 163 and 164 to draw in the piston rod 18 of a right level cylinder 168 and to extend the piston rod 17 of a left level cylinder 167. A fluid is made to enter a passage 59 and a cross member 154 through a passage 171 and a fluid from the cylinder 167 is made to enter the member 154 through a passage 157 at the same time and then discharged from a passage 144. Depending on the necessary movement of the valve 128 in response to a level sensor 130, first and second hydraulic assemblies 117 and 118 are drawn in or extended to bring blade housings into contact with the ground surface and to keep the seat 6 of a frame nearly at a vertical position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grass mowing vehicle, and more particularly to a tilting mowing vehicle that maintains the vehicle body in a substantially vertical position in response to changes in terrain. Vehicles such as riding mowers and tractors with grass cutting attachments are especially used by highway maintenance personnel to clear grass on hill slopes. Most vehicles of this type have no means to adapt to changes in terrain, and when the vehicle is on a slope, the frame may tilt and the vehicle may overturn. At the very least, the situation is dangerous, and the driver leans towards the top of the hill in an effort to lower his center of gravity. Known vehicles include a mechanical device that attaches an adapter to an existing vehicle to adapt the grass blade assembly to the slope without major modifications to the vehicle frame. The frame tilts with the slope. This embodiment limits the degree of inclination over which the vehicle can operate effectively and safely. Another example is attaching a complex fixed deck blade housing to a three or four wheel vehicle frame.

Furthermore, this complex vehicle is expensive. Cannot be used by small workers or municipalities. Even when mowing along a sloping bank, the advantage of having the driver seated vertically is obvious. Until now. There is no vehicle that has a simple leveling system that keeps the vehicle frame in a vertical position, the blade housing of which adapts to changes in the slope of the ground that covers the path of the mowing machine.

The purpose of the present invention is as follows. Hill {IJ! To provide a weeding vehicle for weeding a slope, and to provide a vehicle having a vehicle frame and a means for keeping a driver in an approximately upright position. A vehicle is provided that includes one front wheel and one rear wheel, and has front and rear wheel drives. Provided is a vehicle having bilateral blade housings pivoted on an axis extending in the longitudinal direction of the frame, and having a hydraulic assembly for individually rotating the blade housings to bring each blade housing into operative contact with the ground. To provide a vehicle having a level system that operates a hydraulic cylinder device to maintain a vehicle frame in a vertical position. A vehicle is provided in which a hydraulic cylinder device is connected to an accumulator and blade housings are moved independently of each other. To provide a vehicle in which side frames with wheels are pivotally supported on both sides of the vehicle and pressed by hydraulic pressure to keep the vehicle in an upright position and a Kusakari housing is floating with respect to the side frames, and is relatively easy to use and inexpensive. Our goal is to provide vehicles that can be manufactured and are suitable for the intended use.

1. The sloping weeding vehicle according to the present invention has a vehicle frame and a front part of the vehicle.
k driven wheels. The vehicle maintains its frame in a nearly upright position. A second blade housing is pivoted to the central section of the frame and rotates about respective axes extending in the direction of the frame. A good example. Rotating the blade housing about the central longitudinal axis. First and second blade housings extend laterally on opposite sides of the frame. Each blade housing supports a driven cutting blade, with the blades slightly overlapping and rotating in synchronous and counter-rotating directions. The blade housing may also be modified to support a reel-type cutting assembly. The blade housing is open to the indigo blue and has a common exhaust passage in the central rear section. 2
The counter-rotating blades and central outlet provide an effective cutting mechanism.

A V-shaped diverter directs grass outward from the path of the rear wheels.

This precept further prevents wind columns.

A hydraulic cylinder and piston rond arrangement is provided to rotate the second blade housing about the central longitudinal axis in response to changes in the surrounding topography.

A level system is installed to detect changes in the posture of the vehicle frame. The hydraulic cylinder device is operated to keep the vehicle frame in an almost upright position, and at the same time keep the i-th blade housing in contact with the ground. Other embodiments include pivoting a pair of side frames to the vehicle frame and positioning each side frame to maintain the vehicle in an upright position. Each side frame has overhanging wheels and runs along the ground. A pair of Kusakari housings are mounted floating under each side frame. Each hay housing has a height adjustment wheel on one side and an anti-scuff roller on the opposite end. Each kusari housing contains a pair of blades. Weed the entire width of the device, that is, the width of the weed housing.

Embodiments and drawings illustrating the present invention will be described. The present invention can be modified in various ways, and the embodiments and drawings are illustrative and do not limit the invention.

In Figures 1 to 16, a slope weeding machine 1 according to the present invention is shown. The grass cutting machine has a lower vehicle frame, 3 front wheels, 4 rear wheels, and 5
It has a driver's seat 6. The grass cutting machine l is a prime mover such as an internal combustion engine 9
Driven by. tJ31 Seki 9 is installed on frame 3,
In most cases, at least one of the front and rear wheels 4.5 is connected to both wheels and travels on the ground.

A first blade housing 1l is pivoted to the central section of the frame 3 and extends to the sides of the frame as shown in FIG. A second blade housing l2 is similarly pivoted to the central section of the frame and extends to the other side of the frame. A first and second cutting blade 14.15 is rotatably mounted to the first and second blade housing 11.12.

The first and second hydraulic assemblies 17.18 as means for rotating the first and second blade housings 11.12 will be described below.

The frame 3 is made of a metal plate or the like, and has a cover 20 for shielding various parts of the weed cutting machine 1. The axis of the grass #J&1 extends in the longitudinal direction of the frame 3, passing approximately through the front and rear wheels 4.5. The central axis 8 = A extends in the longitudinal direction of the frame. Divide the frame into two equal sections. Grass mowing machine
is divided into left and right sections and has approximately equal members on both sides of the grass cutting machine. In this specification, these are referred to as left and right when looking at the front of the grass cutting machine 1.

First second hydraulic assembly 17. Level machine +ll9 on 18
Connect the operation. The leveling machine +119 senses the posture of the frame 3, that is, the vertical posture, and connects the first and second hydraulic assemblies 17.
18 are selectively actuated to maintain frame 3 in a generally upright position. by this. The frame and driver are in a vertical position and the blade housing 11.12 remains in contact with the ground. As shown in the figure, the level mechanism 19 is connected to a hydraulic device which will be described later. As shown. 1 {11 front wheels 4 are connected to the front section of the frame 3 by a steering mechanism 22 and driven by a first hydraulic motor 23.
Steering mechanism 22 is coupled to a hydraulic steering cylinder assembly 24 as shown in Figure 3.10.

The second blade housing 11.12 has a central axis A
It is pivoted at a pivot point 28 along -^. In the illustrated example, the blade housing is pivoted along the central axis. It is also possible for the first blade housing to be pivoted to the frame 3 at or near its longitudinal axis, and the second blade housing to be similar. In this case, both pivots are parallel near the central axis and separated horizontally. Each blade housing 11.12 has a respective top plate 29. 3
It has 0. Each terminus plate 29.30 is approximately circular. Each cutting blade 14,15 is rotatably mounted centrally on the top plate 29,30. As shown in FIG. 8, each blade housing 11.12. The top plate 29.30 is truncated, and the pivot 28 holds the string that cuts through the top plate 29.30. Each section board 2
9. 30 includes depending side walls 32,33 at its outer periphery.

The depending side walls 32,33 do not extend into the pivot 28. The blade housings 11 , 12 are open to each other and form a single blade housing cavity 35 . 1st 2nd
The side walls 32.33 of the 1st and 2nd Suzaka 29.30 do not extend all the way around. It is truncated near the central axis A-A, and Section 6.7.
Cut towards the rear of the through-riblade housing 11.12 shown in FIG. This truncated end forms an outlet 37 for weeds and the like near the rear wheel 5, which are then evacuated from the blade housing cavity 35 during vehicle operation.

The dividing member 39 is attached to the rear end of the pivot 28 as shown in FIG. The dividing member 39 is approximately V-shaped and has an apex at the pivot point 28.
Attach to. The dividing member extends behind the pivot portion 28 toward the rear wheel 5. To prevent a large amount of blade cuttings from being discharged under the rear wheel 5 when Kusakari tJM 1 is operated. The first and second cantilevered wheels 41.42 are attached to the lth and second blade housings 11.12, respectively. Extended axle 41.4
2 provides an outer support for the blade housing 11.12, keeping the housing in place above the ground. Overhanging wheels 41.
42 extends to the rear of the blade housing 11.12, but slightly forward of the foremost part of the rear wheel 5. In practice. If the longitudinal spacing is 2 inches (50 mm), the slope weeding machine 1
This makes steering easier. To reduce the tendency of a grass cutting machine to deviate from a predetermined path during grass cutting.

The overhanging wheels 41 and 42 are connected to the second blade housing 1.
1.12 by a first and second link member 44.45. Each link member 44,45 has a first and second pivot pin 46.45 as shown in FIG. It is possible to rotate around 47. One end of each link member 44.45 connects to a respective cantilever wheel 41.42. 1st 2nd Jasokineshi 48.
49 adjusts the ground clearance of the blade housing 11.12. Other adjustment mechanisms for performing this operation will be discussed later. Attach the first and second caster wheels 51.52 to the first and second blade housings 11.12. The required lth second link arm 54. 55 connects a caster wheel 51.52 to the blade housing 11.12 by means of a pivot pin 56. A caster wheel 51. is attached to one end of the first and second link arms 54,55. Connect 52. A second height adjustment device 58. attached to the first and second blade housings 11.12. 59 is connected to the other end of the second link arm 54.55. Link arm 54. 55 rotates around the pin 56 to change the height of the caster wheels 51, 52.

The height adjustment device 58,59 is connected to the caster wheels 51. 52
to the approximate position relative to the blade housing 11.12. Caster wheels are not used for driving on grass vlls, but they prevent them from scraping against the ground when sloping or convex surfaces are encountered. Therefore, general positioning of the caster wheels 51, 52 is sufficient. Adding a link member and a jack screw to the second overhanging wheel 41 and 42. Includes separate height adjustment device. The device includes a mechanism associated with the pivot 28 and a locking assembly 61 releasably connected to the pivot 28, as shown in FIG. A pair of candlesticks 61 are attached to the front and rear ends of the pivot 28, and tabs 62 hanging from the frame 3 respectively.
and is shown in Figures 6-8. Each tab has 63 slots
A lock nut assembly extends within the slot 6 to secure the blade housing 11.12 and pivot 28 to the slot 6.
The height of the cutting blades 14 and 15 relative to the ground is adjusted by fixing the cutting blades 14 and 15 with the upper and lower opening sock nut assemblies 6l.

Connecting the lock nut assembly 61 to the jack screw 48.49 adjusts the center and outer sections of the blade housing 11.12 together to maintain the height of the cutting path of the blade 14.15.

First and second power take off assemblies 68,69 are provided for rotationally driving the cutting blades 14,15. The force take-off assemblies 68, 69 each have one end of the rotating shaft 70, 71 connected to the shaft 7.
It is connected to the gear box 73 shown in Figure 7, which is common to 0.71.
The gear box 73 is a known belt drive device 7 as shown in FIG.
4 is connected to the internal combustion engine 9. The other end of the rotating shaft 70.71 is connected to the first and second cutting blade pulley boxes 76.77. The rotational input of the shaft 70.71 is from the puller box 76.77 to the first and second cutting blade bell 1 drive assembly 78.7.
9. The rotation is transmitted to the first and second cutting blades 11.12 via the first and second cutting blade spindles 80.81.

As shown in FIG. 8, the paths of the first and second cutting blades overlap, resulting in a phase difference of approximately 90°, avoiding contact and synchronizing the rotations. Because the blades are connected to the common gear box 73, the power take-off assemblies 68, 69 drive the blades at the same speed and the blades 14, 15 do not contact between rotations. As shown in FIG. 8, the blades 14, 15 rotate in the opposite direction and leave the pivot 28 after drawing from front to back when approaching. This arrangement effectively allows the cut grass to be discharged from the blade housing 11.12 via the outlet 37. Namely, the first cutting blade! 4 rotates in the hour hand direction when viewed from above, and the second cutting blade 15 rotates counterclockwise when viewed from above. The example shown is a cutting blade, but a reel-type cutting device can also be used. The blade housing 11.12 is reinforced by reinforcing elements 83.84.

The hydraulic device according to the invention includes a fluid reservoir 90. It includes a pressurizing pump 91, a liquid cooler 92, and a transmission device 93. Each part of the hydraulic system is connected to each other via the required fittings. As is known, the pressure pump 91 and the transmission device 93 are connected to and driven by the internal combustion engine 9. The transmission device 93 is connected to the front and rear wheels 4.
5 to provide forward, backward, and neutral states. A gear selector 95 shown in Fig. 9 is provided. A hydraulic cooler 92 is connected to the transmission device 93 by a passageway 96 to cool the hydraulic fluid during operation. Passage 97 returns liquid from cooler 92 to reservoir 90 . Pressure pump 91 sucks liquid from reservoir 90 through passage 99. The pressurized bomb pumps the liquid at approximately 90 ps i (6.3 at
n+) to generate power for the front and rear wheels 4.5. Pressurized liquid is supplied from pressurized bomb 91 to passage 98 via transmission device 93 . The pressurized fluid is connected from the transmission device 93 to the first hydraulic motor 23 and the second pressure motor 104 through a branch passage 101. ! II path 101 is a hydraulic motor 23.1
Connected to each incoming robot of 04. The pressurized liquid operates the hydraulic motors 23, 104 and returns from the discharge boat to the return passage 10.
Enter 5.

The return passage 105 is a merging passage similar to the passage 101, and is a merging passage for the hydraulic motor 23. The return from 104 enters transmission device 93 in one path. Passage 101 by the required control device
, 105 to supply power to the front and rear wheels 4.5.The wheels are connected in parallel and have an automatic differential device, and the lowest torque hydraulic motors 23, 104 move the weeding machine 1 forward and backward. Let. The drive for wheels 4.5 can also be of other types. Hydraulic pressure used for the level mechanism 19 and the steering gear il22 is supplied from a pressurizing pump 91 through a relief valve 108 passage 109. The downstream end of the passage 109 is connected to a steering valve 111 that is part of the steering mechanism 22. The hydraulic pressure in the passage 109 is a low pressure liquid, which is necessary for the operation of the hydraulic motor 23.104.
It is discharged before pressurizing to the full pressure of Qpsi. As shown in FIG. 14, return passage 113 from steering valve m discharges its downstream end into reservoir-to-pump passage 99. The level mechanism 19 and the steering mechanism 22 use the same fluid as the hydraulic motors 23 and 104, but low pressure is sufficient. The steering valve 11 is actuated in a known manner by rotation of the steering assembly 115. The steering valve 111 has primary fluid communication '#a1
116 and a secondary fluid passageway 117 to the hydraulic cylinder steering assembly 24 . The cylinder 119 of the hydraulic cylinder steering assembly 24 has a first end 120 and a second end 121.
It has The piston within the cylinder 119 is not shown. A piston rod 122 attached to the piston extends through a packing at the second end 121 of the cylinder. A piston separates fluid in a primary fluid passageway entering a first end of the cylinder and fluid in a secondary fluid passageway entering a second end of the cylinder.

The piston and piston rond operate in response to fluid passing through the primary and secondary fluid passages 116, 117. The piston rond 122 passes through the cylinder at the second end of the cylinder and is connected at its outer end to the steering mechanism 22 . Steering mechanism 22 has a crank arm 124 attached to a spindle assembly 125. Actuation of the piston rod 122 in response to an increase in pressure in one of the primary and secondary fluid passages 116, 117 moves the front wheel 4 via the spindle assembly 125.

The steering valve 111 is a steering wheel assembly! Primary and secondary fluid communication using pressurized fluid in passage 109 in response to rotation of 15! 311
6. Pressure is applied to one side of the steering wheel assembly 117 according to the direction of rotation of the steering wheel assembly 115. for example. When the driver turns to the left as seen from the normal seating position of seat 6, the steering shaft is rotated counterclockwise. The steering valve 111 pressurizes the primary fluid passage 116 so that fluid enters the first end 120 of the cylinder and moves the piston and piston rod 122 outwardly, and fluid exits the second end 121 of the cylinder and enters the secondary Enter aisle 117. When the piston rod leaves the cylinder 119, the crank @l24 and spindle assembly 125 rotate counterclockwise and the steering mechanism 22 turns the wheels to the left. Conversely, for a right turn, the pressurized fluid enters the second flBB 121 of the cylinder via the secondary fluid passage 117, bowing the piston and piston rod 122 toward the first end of the cylinder. discharging fluid from the first end 120 of the cylinder;
The crank arm 124 and spindle assembly 125 are rotated to turn the steering mechanism 22 to the right. The level mechanism 19 includes a main level valve 128 and a relay switch 129. It has 130 level sensor 131 and accumulator cylinder 132. Each component is mounted within the front section 137 of the frame 3, as shown in FIG. A passageway 139 connects the steering valve 111 to the inlet boat 140 of the main level valve 128. The main level valve 12B is a known electric valve that opens and closes various boats in response to electrical impulses. The passage 144 is connected to the outlet H42 of the valve 128. A passageway 144 connects the oil filter assembly 145 to the oil filter assembly 145. Oil filter assembly 145 is connected to transmission device 93 via return passage 147.

14th. 15. As shown in FIG. 16, fluid flows through a circuit from pressurization bomb 9X through steering valve assembly 111 main level valve 128 filter 145 transmission device 93 and back to pressurization bomb 91. For this purpose, the steering valve 111 is connected to the steering mechanism 22.
When not in use, pressurized fluid simply passes through the valve and is supplied to the main level valve 128. When using the steering mechanism 22,
The steering valve 111 divides at least a portion of the fluid into the primary and secondary fluid passages 116 and 117 to operate the steering mechanism. The grass cutting machine 1 is in an equilibrium state, and the first and second pressure acting assemblies 17
．． When adjustment of 18 is not required, level valve 128 directs fluid from inlet port 1140 to outlet port 142 through filter assembly 145 and transmission 93 back to bomb 9l. In this case, the fluid simply circulates through the system and is used for one level operation. The main level valve 128 has a first auxiliary boat 151 and a second auxiliary boat l52.

The first auxiliary boat 151 is connected to the four-way crossing member 154. Connect the fluid from boat l51 to the three parts described below. The second auxiliary bow 152 includes a T-shaped member. Supply fluid to 21 parts.

Four-way crossover member 154 couples fluid to first or left hydraulic assembly 17 via passageway 157 . Cross member 154 connects to accumulator cylinder 132 via passageway 158 . Cross member 154 connects to manual lift valve assembly 160 via passageway 159 .

T-shaped member 155 connects to second right hydraulic assembly 18 via passageway 163 . A passageway 164 connects member 155 and manual lift valve 160. The second hydraulic assemblies 17, 18 each have a first level cylinder 167 and a second level cylinder 168.
As is known, each has a connecting lug, a piston, and a piston rond assembly. As shown in Figure 2.6, the level cylinder lug is pivotally supported on the grass cutting machine frame 3. The free ends of the piston ronds are connected to the blade housings 11, 12, respectively. Level cylinder 167. 168 are connected in a known manner to the respective blade housings 11.12, such that actuation of the piston rond causes the blade housings to pivot about the central pivot 28.

A passageway 157 is connected to the outer end of the first level cylinder 167 to regulate fluid flow to one side of the cylinder piston.
! II passage 171 connects the inner end of the level cylinder to manual lift valve 160. When manual lift valve 160 is in the neutral position, fluid passes through T-shaped member 155! ? 3164 lift valve 160 passage 171 to first level cylinder 1
It flows into the opposite side of the cylinder piston of 67. Passage 163 connects the outer end of second level cylinder 168 to T
Connected to mold member 155. Fluid from T-shaped member 155 enters one side of the cylinder piston of second level cylinder 168. Fluid from the inner end of the second level cylinder 168, opposite the cylinder piston, enters the lift valve assembly 160 via passageway 172. Passage 172 Manual lift valve 160 Passage 159 when lift valve assembly 160 is in neutral position
to the inner end of the level cylinder 168 and the cross member 154.
There is communication between the two. As shown, when the lift valve 160 is in the neutral position, the T-shaped member 155 communicates with the outer end of the second level cylinder 168 and the inner end of the first level cylinder 167 simultaneously from the second auxiliary boat l52. . Thus, fluid flow acts from the second auxiliary boat 152 via the T-shaped member 155 simultaneously on the inner end of the cylinder piston of the first level cylinder and the outer end of the cylinder piston of the second level cylinder 168.

As shown in Figure 16, from the first auxiliary boat to the first
the outer end of the second level cylinder 167, the inner end of the second level cylinder 168. Fluid flow occurs in accumulator 132. Level sensor 131 operates electrical main level valve 128. The level valve 128 responds to the electrical input from the level sensor 131 to adjust the first and second auxiliary valves as required.
151 and 152 are opened and closed to maintain frame 3 in an almost vertical position. The level sensor 128 is shown in FIG. 11, and the switch l29,
Connected to both ends of the main level valve 12B via 13Q. The level sensor has a curved tube 75 and is attached to a support structure 176 attached to the frame 3. A tube 175 is filled with a fluid such as kerosene and has a steel ball 179 inside.

When the internal fluid in the combination of the tube 175 and the bulb 179 is a gas such as air, the response speed of the sensor becomes faster. The bottom of the tube 175 is lower than the first and second ends 1B1.182 of the tube 175. The required sensors in the first and second ends 181, 182 are activated when the ball 179 is contacted. When the frame 3 tilts to the right or left on a slope, the ball 179 moves to the tube 175.
Transferred to one of the first and second ends 181 and 182 of. Upon contact with the sensor, an electrical impulse is transmitted to the main level valve 128 to actuate the valve 128 to open or close the required auxiliary boat. Section 4.5, 12. Figure 13 shows the various slopes that may be encountered during operation of the weeder. The above-described valve system responds to any tilt by extending or retracting the piston ronds in the second level cylinders 167, 168 to maintain the frame 3 in a vertical position. In the case of the present invention, a curved pipe 175 filled with kerosene is suitable, but the attitude detection device of the frame 3 is not limited thereto. The illustrated structure is actually effective. The kerosene and sphere combination does not respond excessively to frame 3 attitude changes. For example, Mercury Suisochi makes an excessive response and frames 3
is constantly shifting and is unpleasant for the driver. In the illustrated structure. Responds when frame 3 shifts slightly. Changes are gradual and not unpleasant.

The operation of the hydraulic valve devices described above is known and will not be described in detail in each case. FIG. 13 shows a normal case, where the weed cutting machine 1 removes grass from the slope. The device of the invention can operate from horizontal to 30' (IJ!) upward.

In the case of FIG. 13, the mower l enters the slope and tends to lean to the left, and the steel ball 179 contacts the sensor in the first end of the tube. The electric main level valve 128 is actuated to open the second auxiliary valve 152, and the pressurized fluid enters the passage 11163, passes through the passage 164, and enters the passage 171, retracting the piston rond of the right level cylinder 168, and retracting the piston rond of the left level cylinder. 1
Extend the 67 piston rond. The fluid is in the passage 171
and then enters passageway 159 and crossover member 154 . At the same time, fluid from left level cylinder 167 enters cross member 154 via passage 157. This fluid is exhausted via passageway 144.

The accumulator 132 acts as a spring and cushions fluid movement. The accumulator 132 is filled with an inert gas such as nitrogen and has a piston inside. In the extended position of the piston, the pressure in the accumulator is approximately 90 psi (<6.3 aLm) total hydraulic level system pressure. However, if the accumulator is compressed, the pressure will be approximately 500 ps i (4
2a tm). As shown in FIG. 12, when both blade housings 11,12 are pulled up, excess oil is forced into the accumulator.

By the required movement of level valve 128 in response to level sensor 130. The first and second hydraulic assemblies 117, 118 retract and extend the blade housing 11 as required.
12 in contact with the ground, keeping the frame 3 in a substantially upright position.

A manual lift valve 160 overrides the level system to place one of the blade housings 11.12 in a raised position, for example for changing the cutting blade 14.15. Manual lift valve 160 connects to filter 145 via passage 185 to return excess oil between lift operations.

By operating the manual lift valve 160, the level system is overridden and the selected level cylinder 167. 168. Manual lift valve 160 overrides the operating tendency of other level cylinders coexisting with the selected level cylinder, and excess oil is drained to filter 145 via passage 185.

Figures 17-27 illustrate a second embodiment of a slope weeding machine 300 according to the present invention. The slope mowing machine 300 is similar to the mowing machine I in many respects, and similar configurations will not be described in detail. The inclined weeding machine 300 4 includes a vehicle frame, i.e., a vehicle body 303, a front wheel 304, an f&wheel 305, a first weeding device 308, a second weeding device 309, a first side support frame 310, and a second side support frame 311.

The vehicle body 303 is similar to the frame 3 of the previous embodiment and will not be described in detail. The vehicle body 303 contains a prime mover or engine similar to the previous embodiment.

A first blade 317 and a second blade 318 are rotatably supported within a housing 316 of the first weeding device 308 .

The first and second blades 317, 318 are connected to pulleys 3l9, 3.
20 and a drive belt 321 . 322
Drive the pulley by. The drive belt 32l drives the pulley 320, and the drive belt 3 driven by the pulley 320
22 drives the boo IJ319.

A pulley 325 that drives the drive belt 321 is driven by a reduction gear 326 attached to the housing 316.

The speed reducer includes a drive shaft 329 and a pair of universal joints 330, 331.
Connect to the prime mover via.

The housing 316 is pivoted at a position close to the vehicle body 303. Wheel 304. It rotates about an axis parallel to and close to the axis passing through 305. The housing 316 is pivoted to the strut 339 by a pin 339. The struts are connected to height adjustment plates 340. Plate 340 is L-shaped and extends upward from the connection with strut 338. 27th
The adjustment structure 343 shown in the figure is suspended and fixed to the bottom of the intermediate portion of the vehicle body 303. Adjustment structure 343 includes a pair of vertically spaced plates 344345
a plurality of equally spaced horizontally coincident through holes 34, each including a plurality of equally spaced horizontally aligned through holes 34
It has 6. A bar 348 having approximately the same diameter as the hole 346 passes through the pair of horizontally aligned holes 346 and is selectively adjusted and fixed in the vertical position determined by the operator. Top section 350 of adjustment plate 340 rests on rod 348 . The height of the straw housing 316 is adjusted with respect to the vehicle body 303. A vertical axle 353 is attached to the strut 352 extending forward of the housing 316. It supports the forks 354 and free rotating wheels 355. The height of the strato 352, that is, the height of the grass housing 316 is
The height of the grass on the outside of the first grass cutting device 308 is adjusted by inserting a washer or the like between the first grass cutting device 308 and the two prongs 354. An anti-scuff wheel or roller 359 is pivotally mounted on the outer end of housing 316 opposite wheel 355. A chain 360 is attached below the first side support frame 310 to loosely support the housing 316.

The second weeding device 309 has a housing 362 that encloses a pair of internally pivoted cutting blades 363, 364.

Housing 362 is substantially a mirror image of housing 316, but blades 363 and 364 rotate with a 90 degree phase difference with respect to passing blades 317 and 318 shown in FIG.

The first side support frame 310 has radial members 370, 371 of 2(lN) and an axial member 372 near the outer end.
Combine with. The axial member extends downwardly into a depending section 3
It has 75. Rotatably supports wheels 376. The axis of rotation of the wheel 376 is approximately parallel to the axis of rotation of the rear wheel 305. The inner ends of the radial members 370.371 are connected to the pivot members 378.
379, it is pivoted to the vehicle body 303. Support frame 3
10 is connected to the vehicle body 303 by a hydraulic ram 384. A first pivot connection 385 of the ram connects one end of the ram to frame member 372, and a second pivot connection 386 connects one end of the ram to frame member 372.
4 is connected to the vehicle body 303. Ram 384 is Kusakari t
Operationally connected to the hydraulic system of A300, the grass mowing machine 3
00 maintains pressure on the frame 310 as it operates over various terrains. The structure for applying pressure to the frame 310 by the hydraulic ram 384 is similar to the previous embodiment and will not be described in detail.

The second side support frame 311 has a similar mirror symmetry to the lth side support frame 310. The second side support frame 311 has overhanging wheels 390 and the frame 311
The wheels 30 of the vehicle are spaced apart from the vehicle body 303 radially outwardly.
4. Separate from 305. The frame 311 is pivotally supported on the vehicle body frame. The rotation axis is parallel to the axis passing through the wheels 304 and 305. A sludge pressure ram 391 is pivotally supported between the vehicle body 303 and the outside of the frame 311, and the frame 311 is pushed downward under the control of an attitude adjustment system combined with the weeding machine 300. Similarly, Ram 3
91.

The operation of the slope weeding machine 300 of the second embodiment is similar to that of the weeding machine 1 of the first embodiment.
It maintains an almost vertical position by operating the hydraulic system. When the vehicle passes through various terrain, the wheels 390, 3
76 is pressed against the ground by rams 391 and 384 to keep the vehicle body in an upright position. The operation of the grass cutting machine 300 on various terrains is shown in Figure 18.25.

The main difference between the weeding machine 300 and the weeding machine I is that the first and second weeding devices 308, 309 are mounted almost independently to the support frame 310, 311. by this. The grass cutting devices 308 and 309 can be manufactured from light materials. Easily follows terrain. This is shown in FIG. That is, while the support frame 376 follows different terrain, the second weeding device 309 pivots upward to follow slight changes in the terrain below the device 309. Furthermore, the grass cutting device 308 has a chain 360.
Because it is connected to the lth frame 310 by . The hydraulic system acting on the ram 384 can be overridden to allow an operator to raise the first support frame 310 to a position where it does not contact the ground above.

Although the present invention has been described with reference to embodiments, the present invention can be modified in various ways, and the embodiments and drawings are illustrative and do not limit the invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a slope weeding machine according to the present invention. Figure 2 is a plan view of the inclined weed cutting machine. Figure 3 is a cross-sectional view taken along line 3=3 in Figure 2, Figures 4 and 5 are rear views showing the adaptation of the slope weeding machine to the terrain, and Figure 6 is a cross-sectional view taken along line 6-6 in Figure 2. Enlarged cross-sectional view along
Figure M is a partially enlarged view taken along line 7-7 in Figure 2, and Figure 8 is a reduced bottom view of the slope weeding machine. Fig. 9 is a partially enlarged view showing the internal combustion engine and power take-off device of the grass cutting machine, Fig. 10 is a partial plan view showing the steering Schilling device at the front end of the grass cutting machine, Fig. 11 is an enlarged view of the Leher mechanism, and Fig. 12 is Figure 13 is a rear view showing the adaptation of the grass cutting machine to the terrain. Fig. 14 is a partially enlarged perspective view of the hydraulic device of the grass cutting machine. Fig. 15 is a perspective view showing other parts of the hydraulic device, Fig. 16 is a line diagram of the hydraulic device, and Fig. 17 is the main hydraulic device. A perspective view of an inclined weed cutting machine according to another embodiment, FIG.
Fig. 19 is a partially enlarged bottom view showing the grass cutting housing of the grass cutting machine, Fig. 20 is a plan view showing one grass cutting housing, and Fig. 21 is a side view showing one grass cutting housing. Fig. 22 is a partially enlarged sectional view taken along line 22-22 in Fig. 19, Fig. 23 is a bottom view showing the Kusakari housing, Fig. 24 is a partial front view showing adaptation of the Kusakari housing to the topography, and Fig. 25 Figure 26 is a rear view showing the adaptation of the grass cutting machine to the terrain, and Figure 26 is a partial perspective view showing the drive rotation mechanism combined with the grass cutting housing. FIG. 27 is a partial perspective view showing the height adjustment mechanism of the grass straw housing. 1,300. ．． ．． Inclined grass cutting machine 3,303. ．． ．． Vehicle frame 4,304. ．． ．． Front wheel 5,305. ．． ．． Rear wheel
6. ．． ．． Seats 11.12. ．． ．． Blade housing 1
4,15. ．． ．． Blades 17, 18. ．． ．． hydraulic assembly
l9. ．． Level mechanism 22. ．． Steering mechanism 23, 104
．． ．． Hydraulic motor 24. ．． Hydraulic steering cylinder assembly 2
8. ．． Cardinal branch 37,. Discharge port 4L42. ．． ．． Overhanging wheels 44.45. ．． ．． Link member 51.52. ．． ．． Caster wheels 68, 69. ．． ．． Power take-off assembly 90. ．． Reservoir 91, . Bonp 111. ．． ．． Steering valve 128.
．． ．． Main leher valve 131. ．． ．． Level sensor 167,
168. ．． ．． Reher cylinder 160. ．． ．． Manual lift valve 175. ．． ．． Bent pipe 179. ．． ．． Ball 310,
311. ．． ．． Side support frames 316, 317. ．． ．． Kusakari Housing 384,391. ．． ．． Hydraulic ram 360. ．． ．． Chi-Kon (4 others) -1・JG.

Claims (1)

[Claims] 1. A weeding vehicle for weeding a slope, comprising: (a) a main frame of the weeding vehicle that has a substantially vertical posture during operation; (b) one front wheel and one rear wheel. (c) attached to the main frame and connected to at least one of the front and rear wheels; a prime mover for moving the vehicle on the ground; and (d) a side frame pivotally mounted to the main frame and rotatable about an axis extending longitudinally of the main frame, the side frame being pivotable from the longitudinal axis. (e) having laterally extending and laterally spaced apart ground engaging overhanging wheels from the main frame; (f) a pivoting means for automatically pivoting the side frame in response to changes in terrain as the vehicle taxis; (f) pivoting means for automatically pivoting the side frame in response to changes in terrain as the vehicle taxis; The side frames follow the terrain, the main frame rotates around the terrain above the front and rear wheels to maintain a vertical posture, and the Kusakari housing follows the terrain directly below the housing almost independently of the side frames and main frame. A sloped grass vehicle characterized by: 2. (a) the side frame is a first side frame, the grass housing is a first grass housing, and (b) a second side frame is pivotally supported on the opposite side of the first side frame of the main frame. the second side frame is rotatable about a longitudinally extending axis of the main frame, and the second side frame is rotatable about a longitudinally extending axis of the main frame; 2. A weeding vehicle according to claim 1, further comprising a ground-engaging overhang wheel laterally spaced from the frame, and (c) said second weeding housing having cutting means and mounted below said second side frame. 3. The weeding vehicle according to claim 1, further comprising: (a) level control means cooperating with said rotation means to press the rotation means together with the main frame side frames to maintain the main frame in a vertical position. 4. A weeding vehicle for weeding sloped surfaces, comprising: (a) a main frame of the weeding vehicle having a driver's seat that has a substantially vertical position during operation and seats a driver; and (b) one ground-engaging front wheel. and one ground-engaging rear wheel, each wheel being connected to a main frame, the frame and the wheel being connected to the ground along a longitudinal line passing through the bottom of the front and rear ground-engaging wheels when the wheel engages the ground. (c) a prime mover that is attached to the main frame and connected to at least one of the front and rear wheels to move the vehicle on the ground; and (d) an axis that is pivoted to the main frame and extends in the longitudinal direction of the main frame. a side frame pivotable about the longitudinal axis, the side frame having a ground-engaging overhang extending laterally from the longitudinal axis and laterally spaced apart from the main frame; (e) a stub housing having a cutting means and mounted substantially below the side frame, the stub housing pivoted to one side of the main frame for rotation about a longitudinal axis and floating level on the side frame; The Kusakari housing has a movable support means that is spaced apart from the main frame, and the Kusakari housing is supported in a floating manner independently of the side frames so that the main frame and the side frames independently follow the terrain immediately below the housing; (f) horizontally; (g) pivot means for operatively pivoting the side frame about a longitudinal axis in response to changes in the angle of the terrain relative to the terrain so that the side frame follows the terrain and maintains the main frame upright; and a level control means that cooperates with the movement means to maintain the main frame in a vertical position, so that the driver maintains an upright position even when the vehicle passes over uneven terrain when the driver is seated in the seat. Sloping grass car. 5. (a) the side frame is a first side frame, the grass housing is a first grass housing, and (b) a second side frame is pivotally supported on the opposite side of the first side frame of the main frame. the second side frame is rotatable about a longitudinally extending axis of the main frame, and the second side frame is rotatable about a longitudinally extending axis of the main frame; a ground-engaging overhang wheel laterally spaced from the frame; (c) the second forage housing has a cutting means and is mounted below the second side frame; 5. The weeding vehicle according to claim 4, wherein the vehicle is pivoted on one side of the frame and has movable support means on the opposite side. 6. (a) the level control means includes an automatic adjustment device that presses the pivoting means against the main frame and the blade housing and maintains the main frame in an upright position by controlling the degree of pressure; (b) when the operator 5. The weeding vehicle of claim 4, including a manual override for controlling the attitude of the frame. 7. The weeding vehicle according to claim 4, further comprising: (a) adjustment means for allowing a change in the relative height of the said weeding housing with respect to the main frame.