JPH0648931B2 - Sloping grass car - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grass car vehicle, and more particularly to a tilted grass car vehicle that keeps the vehicle body in a substantially vertical posture in response to changes in terrain.

2. Description of the Related Art Grass-bill vehicles such as riding lawn mowers and tractors with a grass-brush attachment are used especially by expressway maintenance personnel for grass-brush on the hillside. Most of these vehicles have no means of adapting to terrain changes, and when the vehicle is on a slope the frame may tilt and the vehicle may capsize. At least in danger, the driver leans towards the top of the hill and tries to lower the center of gravity. Known vehicles include a mechanical device that attaches an adapter to an existing vehicle to adapt the grass bush blade assembly to the slope, without major modification to the vehicle frame, and the frame tilts with tilt. This embodiment limits the extent to which the vehicle can operate effectively and safely. Another example mounts a complex fixed deck blade housing to a three or four wheel vehicle frame.

Moreover, this complex vehicle is expensive and cannot be used by small workers or municipalities. The advantage of having the driver sit vertically is clear even when weeding along the sloping bank. To date, there is no vehicle that has a simple level system that keeps the vehicle frame in a vertical position, and a blade housing that adapts to changes in the slope of the ground that covers the path of the vehicle.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle for carrying grass grass on a slope of a hill, a vehicle having a vehicle frame and means for keeping a driver in an upright posture, and one front wheel. A vehicle including one rear wheel is provided, a vehicle having front and rear wheel drive devices is provided, and a vehicle having both side blade housings pivotally supported on an axis extending in the longitudinal direction of the frame is provided. Each blade housing is provided. Provided is a vehicle having a hydraulic assembly for rotating the hydraulic cylinder, and a vehicle having a level system for operating a hydraulic cylinder device for keeping each blade housing in operative contact with the ground to keep the vehicle frame in a vertical posture. To provide a vehicle in which the device is connected to an accumulator and move independently of each other in the blade housing, and the side frames with wheels are pivotally supported on both sides of the vehicle by hydraulic pressure to push the vehicle upright. It is an object of the present invention to provide a vehicle in which the grass bush housing is kept in a floating position with respect to the side frame, and which is relatively easy to use, inexpensive to manufacture, and suitable for the intended use.

Means for Solving the Problems A tilted grass-border vehicle according to the present invention includes a vehicle frame and one front and rear driven wheel. The vehicle keeps the frame in a substantially upright position. Pivoting the first and second blade housings in the central section of the frame and pivoting about respective axes extending in the longitudinal direction of the frame, in a preferred embodiment pivoting the blade housings about the central longitudinal axis Let The first and second blade housings extend laterally on opposite sides of the frame. Each blade housing carries a driven cutting blade, which slightly overlaps and counter-rotates synchronously with the indigo. The blade housing may be modified to support a reel type cutting assembly. The blade housing is open to the indigo and has a common exhaust passage in the central rear section.
The counter rotation of the two blades and the central outlet provide an effective cutting mechanism. The grass is guided outward from the rear wheel path by the V-type flow dividing member. This configuration further prevents wind trains.

A hydraulic cylinder and a piston rod device are provided to rotate the first and second blade housings about a central longitudinal axis in response to changes in surrounding terrain. A level system is provided to detect a change in the attitude of the vehicle frame, actuate the hydraulic cylinder device to maintain the vehicle frame in a substantially upright attitude, and at the same time maintain the first and second blade housings in contact with the ground.

According to another embodiment, a pair of side frames are pivotally supported on the vehicle frame and each side frame is positioned 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 floating mounted under each side frame. Each turf housing has a height adjustment wheel on one side and an anti-scratch roller on the opposite end. Each Kusakari housing includes a pair of blades to provide the device width, ie the full width of the Kusakari housing.

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

1 to 16, there is shown a tilted weed cutting machine 1 according to the present invention. The Kusakari machine has a lower vehicle frame 3, front wheels 4, rear wheels 5, and a driver's seat 6. The Kusakari machine 1 is driven by a prime mover, for example, an internal combustion engine 9, and the engine 9 is attached to the frame 3 and the front and rear wheels 4,
At least one of 5 is a suitable example, and is connected to both and runs on the ground.

A first blade housing 11 is pivotally supported on the central section of the frame 3 and extends laterally of the frame as shown in FIG. The second blade housing 12 is likewise pivoted to the central section of the frame and extends to the other side of the frame. The first and second cutting blades 14 and 15 are rotatably attached to the first and second blade housings 11 and 12.

The first and second hydraulic assemblies 17, 18 as means for rotating the first and second blade housings 11, 12 will be described later.

The frame 3 is made of a metal plate or the like and has a cover 20 that shields various members of the grass-brushing machine 1. The axis of the grass wing machine 1 extends in the longitudinal direction of the frame 3 substantially through the front and rear wheels 4,5. The central axis AA extends in the longitudinal direction of the frame and divides the frame into two equal sections. The Kusakari machine 1 is divided into left and right sections and has substantially equal members on both sides of the Kusakari machine. In the present specification, the front side of the grass fly machine 1 is referred to as left and right.

A level mechanism 19 is operatively connected to the first and second hydraulic assemblies 17,18. The level mechanism 19 senses the attitude of the frame 3, that is, the vertical attitude, and selectively actuates one or both of the first and second hydraulic assemblies 17, 18 to keep the frame 3 in a substantially upright position.
As a result, the frame and the driver are in a vertical position, and the blade housings 11 and 12 maintain contact with the ground. As shown, the level mechanism 19 is connected to a hydraulic device described later.

As shown, one front wheel 4 is connected to the front section of the frame 3 by a steering mechanism 22 and driven by a first hydraulic motor 23. The steering mechanism 22 is connected to a hydraulic steering cylinder assembly 24 as shown in FIGS.

The first and second blade housings 11 and 12 are pivotally supported by a pivot portion 28 along the central axis AA. While the blade housing is pivoted along the central axis in the illustrated example, the first blade housing is pivoted on the frame 3 at or near the longitudinal axis,
The second blade housing can be similar.
In this case, both pivotal supports are parallel to each other near the central axis and are horizontally separated.

Each blade housing 11, 12 has a top plate 29, 30 respectively. Each top plate 29, 30 has a substantially circular shape, and the respective cutting blades 14, 15 are rotatably attached to the center of the top plate 29, 30. As shown in FIG. 8, each blade housing 11,12, top plate 29,3
0 is a truncated shape, and the pivot 28 forms a chord that crosses the top plates 29,30.

Each top plate 29,30 includes depending sidewalls 32,33 on its outer circumference. Hanging side wall
32,33 do not extend to pivot 28. Blade housing
11, 12 are open to each other to form one blade housing cavity 35. The first and second side walls 32, 33 do not extend over the entire circumference of the first and second top plates 29, 30, but are truncated near the central axis AA, and as shown in FIGS. 6, 7, 8 the blade housing 1
Cut towards the rear of the 1,12. This truncation forms a discharge port 37 for weeds and the like near the rear wheel 5 and discharges it from the blade housing cavity 35 during vehicle operation.

The split member 39 is attached to the rear end of the pivot 28 as shown in FIG. The split member 39 is substantially V-shaped, and the apex is attached to the pivot 28. The split member extends rearward of the pivot 28 toward the rear wheel 5 and prevents a large amount of blade cuttings from being discharged under the rear wheel 5 during the operation of the grass fly machine 1.

The first and second overhanging wheels 41 and 42 are attached to the first and second blade housings 11 and 12, respectively. The overhanging wheels 41, 42 serve as an outer supporting member for the blade housings 11, 12 to keep the housings in place on the ground. The overhanging wheels 41, 42 extend rearward of the blade housings 11, 12, but slightly forward of the frontmost portion of the rear wheel 5. In practice, setting the longitudinal interval to 2 in (50 mm) facilitates the steering of the tilted grass-brushing machine 1 and reduces the tendency of the grass-brushing machine 1 to deviate from the predetermined path between the grass-barrows. Overhanging wheel
41 and 42 are pivotally supported on the first and second blade housings 11 and 12 by the first and second link members 44 and 45. Each link member
As shown in FIG. 2, 44 and 45 are rotatable about the first and second pivot pins 46 and 47. One end of each link member 44, 45 is connected to the respective overhanging wheel 41, 42. The ground height of the blade housings 11 and 12 is adjusted by the first and second jack screws 48 and 49. Another adjusting mechanism for performing this operation will be described later.

First and second caster wheels 51 and 52 are attached to the first and second blade housings 11 and 12. Required first and second link arms
54 and 55 connect the caster wheels 51 and 52 to the blade housings 11 and 12 by pivot pins 56. First and second link arms
Caster wheels 51, 52 are connected to one end of 54, 55. First and second height adjusting devices 58 and 59 mounted on the first and second blade housings 11 and 12 are connected to the other ends of the first and second link arms 54 and 55. The link arms 54 and 55 rotate about the pin 56 to change the height of the caster wheels 51 and 52. Height adjuster
58,59 are caster wheels 51,52 with blade housing 11,1
Lock in approximate position for 2. The caster wheels are not used for running the grass fly machine 1, but prevent rubbing against the ground when encountering a slope or a convex surface. Therefore, the caster wheels 51, 52
The general positioning is sufficient.

In addition to the combination of the link member and the jack screw, the first and second overhanging wheels 41 and 42 include another height adjusting device. This device includes a lock nut assembly 61 releasably connected to the pivot 28, as shown in FIG. 6, as a mechanism associated with the pivot 28. A pair of lock nuts 61 are attached to the front and rear ends of the pivot 28 to cooperate with the tabs 62 hanging from the frame 3, respectively, and the 6th-8th
As shown in the figure. Each tab has a slot 63 in which the lock nut assembly extends to allow blade housing 1
1,12 and pivot 28 are moved up and down in slot 63 and secured with lock nut assembly 61 to adjust the relative height of cutting blades 14,15 with respect to the ground. By connecting the lock nut assembly 61 to the jack screws 48,49, the central and outer sections of the blade housings 11,12 are adjusted together to provide blades 14,15.
Keep the height of the cutting path.

First and second power take off device assemblies 68,69 are provided to drive the cutting blades 14,15 in rotation. Power take-off assembly 6
Reference numerals 8 and 69 respectively connect one ends of rotating shafts 70 and 71 to a gear box 73 shown in FIG. 7, which is common to the shafts 70 and 71. The gearbox 73 is connected to the internal combustion engine 9 by a known belt drive 74, as shown in FIG. The other ends of the rotating shafts 70,71 are connected to the first and second cutting blade gear boxes 76,77. Rotation input of shafts 70 and 71 is gearbox
From 76,77, first and second cutting blade belt drive assembly
78, 79 and the first and second cutting blade spindles 80, 81 are transmitted to the first and second cutting blades 11, 12 for rotation.

As shown in FIG. 8, the first and second cutting blades have overlapping paths and have a phase difference of about 90 ° to avoid contact and synchronize rotation. Since the blades are connected to the common gearbox 73, the power take off assemblies 68, 69 drive the blades at the same speed and
4,15 do not touch during rotation. As shown in FIG. 8, the blades 14 and 15 rotate in the reverse direction, and when they come close to each other, they sweep from the front to the rear and then move away from the pivot 28. In this configuration, the cut grass is effectively discharged from the blade housings 11 and 12 through the discharge port 37. That is, the first cutting blade 14 rotates clockwise when viewed from above, and the second cutting blade 15 rotates counterclockwise when viewed from above. In the illustrated example, a cutting blade is used, but a reel type cutting device or the like can also be used.

The blade housings 11 and 12 are reinforced by the reinforcing members 83 and 84.

The hydraulic device according to the present invention comprises a fluid reservoir 90, a pressurizing pump 9
1, including a liquid cooler 92 and a transmission device 93. The respective parts of the hydraulic device are connected to each other via required fittings or the like.

The pressurizing pump 91 and the transmission device 93 are connected to and driven by the internal combustion engine 9 as is known. The transmission device 93 supplies the forward and backward neutral states to the front and rear wheels 4, 5. Gear selector 95 shown in FIG.
To provide. The hydraulic cooler 92 is connected to the transmission device 93 by a passage 96 to cool the hydraulic fluid during operation. Passage 97 returns liquid from cooler 92 to reservoir 90. The pressure pump 91 sucks the liquid from the reservoir 90 through the passage 99.

The pressurizing pump pressurizes the liquid to about 90 psi (6.3 atm) and the front and rear wheels.
The power of 4 and 5 is used. Pressurized liquid is transmitted from the pressurizing pump 91 to the transmission device.
It is supplied to the passage 98 via 93. The pressurized liquid is connected from the transmission device 93 to the first hydraulic motor 23 and the second hydraulic motor 104 through the branch passage 101. Passage 101 is hydraulic motor 23,1
Connect to each of the 04 entrance ports. Pressurized liquid is hydraulic motor
Operate 23, 104 and enter the return passage 105 from the discharge port.
The return passage 105 is a merging passage like the passage 101, and the return from the hydraulic motors 23 and 104 enters the transmission device 93 through one passage. The required control device controls the liquid flow in the passages 101, 105 to supply power to the front and rear wheels 4, 5. The wheels are connected in parallel and have an automatic differential.
Pushes forward and backwards Kusakari machine 1. The drive of the wheels 4, 5 can be of other types.

The hydraulic pressure used for the level mechanism 19 and steering mechanism 22 is a pressure pump.
It is supplied from 91 through a relief valve 108 and a passage 109. aisle
The downstream end of 109 is connected to a steering valve 111 which is a part of the steering mechanism 22. The hydraulic pressure in the passage 109 is low pressure liquid, which is discharged before being pressurized to the total pressure of 90 psi required for the operation of the hydraulic motors 23 and 104. As shown in FIG. 14, the return passage 113 from the steering valve 111 discharges the downstream end into the passage 99 from the reservoir to the pump. The level mechanism 19 and the steering mechanism 22 are the hydraulic motor 2
Uses the same fluid as 3,104, but low pressure is sufficient.

The steering valve 111 operates in a known manner by the rotation of the steering wheel assembly 115. The steering valve 111 is connected to the hydraulic cylinder steering assembly 24 via a primary fluid passage 116 and a secondary fluid passage 117. Cylinder 119 of hydraulic cylinder steering assembly 24 has a first end 120 and a second end 121. The piston in the cylinder 119 is not shown. A piston rod 122 attached to the piston extends through the packing at the second end 121 of the cylinder. A piston separates the fluid in the primary fluid passage entering the first end of the cylinder from the fluid in the secondary fluid passage entering the second end of the cylinder. Primary and secondary fluid passage 11
The piston and piston rod act in response to the fluid passing through 6,117.

The piston rod 122 passes through the packing 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. When the piston rod 122 is activated in response to the pressure increase in one of the primary and secondary fluid passages 116, 117, the front wheel 4 is moved through the spindle assembly 125.

The steering valve 111 responds to the rotation of the steering wheel assembly 115 by
The pressurized fluid of 9 is used to pressurize one of the primary and secondary fluid passages 116 and 117 in accordance with the direction of rotation of the steering wheel assembly 115. For example, when the driver turns to the left as viewed from the steady sitting position of the seat 6, the steered wheels are rotated counterclockwise. The steering valve 111 pressurizes the primary fluid passage 116 so that the fluid enters the first end 120 of the cylinder, moves the piston and piston rod 122 outward, and the fluid exits the second end 121 of the cylinder to the secondary end. Enter aisle 117. When the piston rod moves away from the cylinder 119, crank arm 124 and spindle assembly 125
Rotates counterclockwise, and the steering mechanism 22 turns the wheel to the left. On the contrary, in the case of turning right, the pressurized fluid is the secondary fluid passage.
117 to enter the second end 121 of the cylinder and retract the piston and piston rod 122 towards the first end of the cylinder. Drain fluid from the first end 120 of the cylinder, rotate the crank arm 124 and the spindle assembly 125, and turn the steering mechanism 22 to the right.

Level mechanism 19 is the main level valve 128 relay switch 129,130
It has a level sensor 131 accumulator cylinder 132. As shown in Figure 15, the components are installed in the front section 137 of the frame 3. Passage 139 connects steering valve 111 to inlet port 140 of main level valve 128. Main level valve 128
Is a known electric valve that opens and closes various ports in response to electric impulses. A passage 144 is connected to the outlet port 142 of the valve 128. The passage 144 connects the outlet port 142 to the oil filter assembly 145. The oil filter assembly 145 has a return passage 14
It is connected to the transmission device 93 via 7.

As shown in FIGS. 14, 15, and 16, the fluid flows from the pressurizing pump 91 through the steering valve assembly 111, the main level valve 128, the filter 145, and the transmitting device 93 to the pressurizing pump 91. For this reason, when the steering valve 111 does not use the steering mechanism 22, the pressurized fluid simply passes through the valve and is supplied to the main level valve 128. Steering mechanism 22
When using, the steering valve 111 diverts at least a part of the fluid to the primary and secondary fluid passages 116 and 117 to operate the steering mechanism.

The grass wing machine 1 is in an equilibrium state, and the first and second hydraulic assemblies 17,1
Level valve 128 directs fluid from inlet port 140 to outlet port 142 when no adjustment of 8 is required.
145 Return to pump 91 via transmission 93. In this case the fluid simply circulates in the system and is used in the case of level actuation.

The main level valve 128 has a first auxiliary port 151 and a second auxiliary port 152. The first auxiliary port 151 is connected to the four-way crossing member 154, and the fluid from the port 151 is connected to the three parts described later. The second auxiliary port 152 includes a T-shaped member and supplies fluid to the two parts.

The four-way crossing member 154 connects the fluid to the first or left hydraulic assembly 17 via a passage 157. Crossing member 154 to passage 158
To the accumulator cylinder 132 via. The cross member 154 is connected via a passage 159 to a manual lift valve assembly 160.

From T-shaped member 155 through passage 163 to second right hydraulic assembly
Connect to 18. Passage 164 includes member 155 and manual lift valve 160.
To connect.

The first and second hydraulic assemblies 17, 18 each have a first level cylinder 167 and a second level cylinder 168, and as is known, each have a connecting lug, a piston and a piston rod assembly. As shown in FIGS. 2 and 6, the level cylinder lug is pivoted on the grass frame 3 and the free ends of the piston rods are connected to the blade housings 11 and 12, respectively. The level cylinders 167, 168 are connected to the respective blade housings 11, 12 in a known manner, and the movement of the piston rod causes the blade housings to pivot about a central pivot 28.

Passage 157 is connected to the outer end of first level cylinder 167 to regulate fluid flow to one side of the cylinder piston. aisle
171 connects the inner end of the level cylinder to the manual lift valve 160. When the manual lift valve 160 is in the neutral position, fluid flows from the T-shaped member 155 through the passage 164 lift valve 160 passage 171 to the opposite side of the cylinder piston of the first level cylinder 167.

A passage 163 connects the outer end of the second level cylinder 168 to the T-shaped member 155. Fluid from the T-shaped member 155 enters one side of the cylinder piston of the second level cylinder 168. Fluid from the inner end of the second level cylinder 168, ie, the opposite side of the cylinder piston, passes through passage 172 to lift valve assembly 16;
Enter 0. Passageway 17 when lift valve assembly 160 is in the neutral position
2 Manual lift valve 160 Via passage 159 Level cylinder 168
There is communication between the inner end of the cross member and the cross member 154.

As shown, when the lift valve 160 is in the neutral position, the T-shaped member 15
5 simultaneously communicates from the second auxiliary port 152 to the outer end of the second level cylinder 168 and the inner end of the first level cylinder 167. Thus, from the second auxiliary port 152 to T
Through the mold member 155, at the same time, a fluid flow acts 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 FIG. 16, from the first auxiliary port to the outer end of the first level cylinder 167 and the second level cylinder 16 at the same time.
A fluid flow occurs in the accumulator 132 at the inner end of 8. The level sensor 131 operates the electric main level valve 128. The level valve 128 responds to the electric input from the level sensor 131 to open and close the first and second auxiliary ports 151 and 152 as required to keep the frame 3 in a substantially vertical posture.

The level sensor 128 is shown in FIG. 11 and is connected to both ends of the main level valve 128 via switches 129 and 130. The level sensor has a curved pipe 175 and has a supporting structure 176 attached to the frame 3.
Install on. A pipe 175 is filled with a fluid such as kerosene and has a steel ball 179 inside. The combination of the tube 175 and the sphere 179 makes the sensor response speed faster when the internal fluid is gas such as air.
The bottom of tube 175 is lower than the first and second ends 181, 182 of tube 175. The required sensors in the first and second ends 181,182 are activated when the ball 179 contacts. The sphere 179 rolls on one of the first and second ends 181, 182 of the tube 175 when the frame 3 tilts to the right or left, such as on a slope. Upon contact with the sensor, the electrical impulse is transmitted to the main level valve 128 and the valve 128
To open and close the required auxiliary port.

Figures 4, 5, 12, and 13 show the various tilts that may be encountered during operation of the grass-brush machine 1. The valve device described above responds to all tilts with a first
The piston rods in the second level cylinders 167,168 are extended or retracted to keep the frame 3 in a vertical position. In the case of the present invention, the curved tube 175 filled with kerosene is preferable,
The posture detection device for the frame 3 is not limited. The configuration shown in the figure is effective in practice, and the combination of kerosene and sphere is frame 3
Does not overly respond to changes in posture. Mercury switches, for example, respond excessively and the frame 3 is constantly shifting, which is annoying to the driver. In the configuration shown, the frame 3 responds when slightly shifted, the change is slow and not unpleasant.

The operation of the hydraulic valve device described above is known and will not be detailed in each case. FIG. 13 shows a normal case, in which the grass-brushing machine 1 carries out grass-brushing on the slope. The device of the present invention can operate on slopes up to 30 ° from horizontal.

In the case of FIG. 13, the grass fly machine 1 tends to enter the slope and lean to the left, and the steel ball 179 contacts the sensor in the first end of the tube. The electrical main level valve 128 is activated and the second auxiliary port
Open the valve 152, the pressurized fluid enters the passage 163, then the passage 164 and then the passage 171, retracts the piston rod of the right level cylinder 168, and extends the piston rod of the left level cylinder 167. The fluid passes through the passage 171 and intersects with the passage 159.
Enter 154. At the same time, the fluid from the left level cylinder 167 enters the cross member 154 via the passage 157. This fluid is in passage 14
It is discharged through 4.

The accumulator 132 acts as a spring and buffers the movement of fluid. 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 about the total pressure of the hydraulic level device.
It is 90 psi (6.3 atm). However, if the accumulator is compressed, the pressure will be about 600 psi (42 atm). As shown in Fig. 12, when both blade housings 11 and 12 are pulled up,
Excess oil is pressed into the accumulator.

The required movement of the level valve 128 in response to the level sensor 130 causes the first and second hydraulic assemblies 117, 118 to retract and extend as required to bring the blade housings 11, 12 into contact with the ground and to close the frame 3 substantially. Keep upright.

The manual lift valve 160 overrides the level system to place one of the blade housings 11,12 in the raised position, for example to replace the cutting blades 14,15. Manual lift valve 16
0 connects to the filter 145 via passage 185 and returns excess oil during lift operation. By operating the manual lift valve 160,
Override the level system and allow it to enter one of the selected level cylinders 167,168 via one of the passages 171,172. The manual lift valve 160 overrides the actuation tendency of the other level cylinders cooperating with the selected level cylinder and excess oil is drained to the filter 145 via the passage 185.

FIG. 17-27 shows a tilted weeding machine 300 according to a second embodiment of the present invention. The tilted grass flyer 300 is similar in many respects to the grass flyer 1 and will not be described in detail for similar constructions.

Inclined grass sill machine 300 includes a vehicle frame or body 303 front wheel 304 rear wheel 305 first grass sill arrangement 308 second grass sill arrangement 309 first side support frame 310 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. In the vehicle body 303, the same prime mover or engine as in the previous embodiment is incorporated.

A first blade 317 and a second blade 318 are rotatably supported in a housing 316 of the first grass fly apparatus 308. First second
The blades 317 and 318 of the above are driven by pulleys 319 and 320, and the pulleys are driven by drive belts 321 and 322. The drive belt 321 drives the pulley 320, and the drive belt 322 driven by the pulley 320 drives the pulley 319.

The pulley 325 that drives the drive belt 321 is the housing 316
It is driven by a speed reducer 326 attached to the. The speed reducer is connected to the prime mover via a drive shaft 329 and a pair of universal joints 330 and 331.

The hound jig 316 is pivotally supported at a position close to the vehicle body 303, and rotates about an axis parallel to and close to the axes passing through the wheels 304 and 305. Housing 316 has pin 33 on strok 339
It is pivotally supported by 9 and the strut is connected to the height adjusting plate 340. The plate 340 is L-shaped and extends upward from the connection with the strut 338. The adjustment structure 343 shown in FIG.
Stick to the bottom of the middle part of 3.

The adjustment structure 343 includes a pair of vertically spaced plates 344 and 345, each having a plurality of equally spaced horizontally aligned through holes 346. A rod 348 of approximately the same diameter as the hole 346 passes through a pair of horizontally aligned holes 346 and is selectively adjusted and secured in a vertically positioned position by the operator.

Place the upper section 350 of the adjustment plate 340 on the rod 348. Adjust the height of the Kusakari housing 316 relative to the car body 303.
A vertical axle 353 is attached to a strut 352 extending to the front of the housing 316 and supports a fork 354 and a free-wheeling wheel 355. Height of struts 352 or Kusanagi housing 31
The height of 6 is adjusted by inserting a washer or the like between the strut 352 and the fork 354 to adjust the height of the outside of the first grass-border device 308. Anti-scratch wheels or rollers 359 wheels
Pivot on the outer edge of housing 316 opposite 355. First
Install the chain 360 that loosely supports the housing 316 under the side support frame 310 of the.

The second grass-brush device 309 has a housing 362 that covers a pair of internally pivoted cutting blades 363,364. housing
362 is a mirror image of housing 316 but blade
As shown in Fig. 23, 363 and 364 are different from blades 317 and 318
It rotates with a 90 ° phase difference.

The first side support frame 310 includes two radial members 370,
371, and is connected to the axial member 372 near the outer end. The axial member has a downwardly extending depending section 375,
Rotate and support 376. The axis of rotation of wheel 376 is substantially parallel to the axis of rotation of rear wheel 305. The inner ends of the radial members 370,371 are pivotally supported on the vehicle body 303 by pivot members 378,379.
The support frame 310 is connected to the vehicle body 303 by a hydraulic ram 384, the ram's first pivot connection 385 connects one end of the ram to the frame member 372, and the second pivot connection 386 connects the ram 38.
Connect the other end of 4 to the car body 303. The ram 384 is a grass machine 300
Operatively connected to the hydraulic system to maintain pressure on the frame 310 when the Kusakari machine 300 operates on various terrains. Hydraulic ram 384
The structure for exerting pressure on the frame 310 by means of this is the same as in the previous embodiment and will not be described in detail.

The second side support frame 311 is the first side support frame
It has the same mirror image symmetry as 310. Second side support frame
311 has a projecting wheel 390, which is separated from the vehicle body 303 on the outer side in the radial direction of the frame 311 and separated from the vehicle wheels 304 and 305. The frame 311 is pivotally supported on the vehicle body frame, and the rotation axis is parallel to the axis passing through the wheels 304 and 305. Hydraulic ram 391
Is pivoted between the vehicle body 303 and the outside of the frame 311 and the frame 311 is pushed downward under the control of the attitude adjustment system combined with the grass fly machine 300, and the system operates the ram 391 in the same manner as the control of the ram 384. Control the hydraulic pressure to.

The operation of the tilted grass-brushing machine 300 of the second embodiment is similar to that of the grass-brushing machine 1 of the first embodiment, and the narrow body 303 attached to the front and rear wheels 304 and 305 is almost vertical by the operation of the hydraulic system to the side frames 310 and 311. Keep your posture. The wheels 390,376 are pressed against the ground by the rams 391,384 to keep the vehicle in an upright position as the vehicle traverses various terrains. The various topographical operations of the Kusakari machine 300 are shown in Figures 18 and 25.

The main difference between the Kusakari machine 300 and the Kusakari machine 1 is that the first and second Kusakari machines 308 and 309 are attached to the support frames 310 and 311 almost independently. As a result, the Kusakari device 308,309
Can be manufactured with a light material and easily follows the terrain. This is shown in FIG. That is, while the support frame 376 follows different terrains, the second grass-brush device 309 pivots upward and the device 30 moves.
Follow the slight terrain changes under 9. Furthermore, Kusanagi device 308
Since the chain is connected to the first frame 310 by the chain 360, it is possible to override the hydraulic system acting on the ram 384 and raise the first support frame 310 to a position where it does not touch the ground above. is there.

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

[Brief description of drawings]

FIG. 1 is a perspective view of a tilted grass fly machine according to the present invention, FIG. 2 is a plan view of the tilted grass fly machine, FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, and FIG. Rear view showing the adaptability of the Kusanagi machine to the terrain, Fig. 6 is an enlarged sectional view taken along line 6-6 of Fig. 2, Fig. 7
Fig. 7 is a partially enlarged view taken along line 7-7 of Fig. 2, Fig. 8 is a reduced bottom view of a tilted grass fly machine, and Fig. 9 is a partially enlarged view showing the internal combustion engine and power take-off device of the grass fly machine, Fig. 10. Is a partial plan view showing the steering cylinder device at the front end of the Kusakari machine, FIG. 11 is an enlarged view of the level mechanism, FIG. 12 and FIG. 13 are rear views showing conformity of the Kusakari machine to the terrain, and FIG. Partially enlarged perspective view of hydraulic system, 15th
FIG. 16 is a perspective view showing another part of the hydraulic device, FIG. 16 is a diagram of the hydraulic device, FIG. 17 is a perspective view of a tilted grass-brush machine according to another embodiment of the present invention, and FIG. Fig. 19 is a rear view of the Kusakari machine, Fig. 19 is a partially enlarged bottom view showing the Kusakari housing of the Kusakari machine, Fig. 20.
The figure is a plan view showing one of the Kusakari housings, Fig. 21 is a side view showing the one Kusakari housing, and Fig. 22 is a 22-2 of Fig. 19.
Fig. 23 is a partially enlarged sectional view taken along the line 2; Fig. 23 is a bottom view showing the Kusakari housing; Fig. 24 is a partial front view showing the Kusakari housing conforming to the terrain; Fig. 25 shows the conformation of the Kusakari machine to the terrain. FIG. 26 is a rear perspective view, FIG. 26 is a partial perspective view showing a driving and rotating mechanism combined with a Kusakari housing, and FIG. 27 is a partial perspective view showing a height adjusting mechanism of the Kusakari housing. 1,300 …… Inclined grass machine, 3,303 …… Vehicle frame 4,304 …… Front wheel, 5,305 …… Rear wheel, 6 …… Seat 11,12 …… Blade housing, 14,15 …… Blade 17,18 …… Hydraulic assembly , 19 ...... Level mechanism 22 ...... Steering mechanism, 23, 104 ...... Hydraulic motor 24 ...... Hydraulic steering cylinder assembly, 28 ...... Pivot part 37 ...... Discharge port, 41, 42 ...... Overhanging wheel 44, 45 ...... Link member, 51,52 ...... Caster wheel 68,69 ...... Power take-out assembly, 90 ...... Reservoir 91 ...... Pump, 111 ...... Steering valve, 128 ...... Main level valve 131 ...... Level sensor, 167,168 …… Level cylinder 160 …… Manual lift valve, 175 …… Curved tube, 179 …… Ball 310, 311 …… Side support frame 316, 317 …… Kusanagi housing, 384, 391 …… Hydraulic ram 360 …… Chain

Claims (7)

[Claims] 1. A grass-bread vehicle having a grass-buckling slope, comprising: (a) a grass-bread vehicle main frame having a substantially vertical posture during operation; and (b) one front wheel and one rear wheel. The wheels are connected to the main frame, and the frame is rotatable about the longitudinal line passing through the bottom of the front and rear wheels with respect to the ground. (C) Attached to the main frame and connected to at least one of the front and rear wheels to mount the vehicle on the ground. And (d) a side frame pivotally supported on the main frame and rotatable about an axis extending in the longitudinal direction of the main frame,
The side frame has laterally extending ground engaging wheels that extend laterally from the longitudinal axis and are laterally spaced from the main frame, and (e) pivots on the main frame and extends outwardly to extend longitudinally. Including a grass-brush housing rotatable about a directional axis and having cutting means, the grass-brush housing being floatingly connected to the side frame, and (f) automatically responding to changes in terrain when the vehicle is taxiing. The side frame follows the terrain, and the main frame rotates about the terrain on the front and rear wheels to maintain a vertical posture and the grass frame housing is divided into the side frame and the main frame. A tilted grass-bread vehicle characterized by following the terrain directly below the housing almost independently. 2. (a) The side frame is a first side frame, the grass stick housing is a first grass stick housing, and (b) the main frame is pivotally supported on the opposite side of the first side frame. A second side frame, wherein the second side frame is rotatable about an axis extending in the longitudinal direction of the main frame, and the second side frame is lateral from the longitudinal axis. The ground engaging ledge wheel extending and laterally spaced from the main frame, wherein: (c) said second ramie housing has cutting means and is mounted below the second side frame. Kusanagi vehicle. 3. The vehicle according to claim 1, further comprising: (a) level control means which cooperates with the rotating means to press the rotating means together with the side frames of the main frame to keep the main frame in a vertical posture. . 4. A grass car vehicle for performing grass grass on an inclined surface, comprising: (a) a main frame of a grass car vehicle having a driver's seat for holding a driver in a substantially vertical position during operation; and (b) one ground surface. It includes a front engaging wheel and one ground engaging rear wheel, each wheel is connected to a main frame, and the frame and the wheel pass through the bottom of the front and rear ground engaging wheels when the wheel engages the ground with respect to the ground. It is rotatable about the longitudinal line, (c) a prime mover that is attached to the main frame and is connected to at least one of the front and rear wheels to move the vehicle on the ground, and (d) is pivotally supported by the main frame in the longitudinal direction of the main frame. Including a side frame rotatable about an extending axis,
The side frame has a ground engaging overhanging wheel that extends laterally from the longitudinal axis and is laterally spaced from the main frame, and (e) has cutting means and is mounted substantially below the side frame. Including a grass stick housing, the grass stick housing being pivotally supported on one side of the main frame and rotatable about a longitudinal axis to provide a floating level on the side frames, the grass stick housing having operative support means spaced from the main frame ， Kusakari housing floats independently of the side frame to independently follow the terrain directly under the housing independently of the main frame and side frame, and (f) responds to the change of the terrain angle with respect to the horizontal side frame. Rotating means for rotatably moving about the longitudinal axis so that the side frame follows the terrain and keeps the main frame upright; (g) Cooperating with the rotating means to keep the main frame in a vertical position. Level control means Hints, even the driver when passing through the terrain the vehicle is not horizontal when the driver is seated on the seat tilt Kusakari vehicle, characterized in that to maintain an upright posture. 5. (a) The side frame is a first side frame, the grass stick housing is a first grass stick housing, and (b) the main frame is pivotally supported on the opposite side of the first side frame. A second side frame, wherein the second side frame is rotatable about an axis extending in the longitudinal direction of the main frame, and the second side frame is lateral from the longitudinal axis. A ground engaging overhanging wheel extending laterally away from the main frame; (c) the second grass pod housing having cutting means and mounted below the second side frame, the second grass lap 5. The vehicle according to claim 4, wherein the housing is pivotally supported on one side with respect to the main frame and has operation supporting means on the opposite side. 6. The level control means includes an automatic adjusting device for holding the main frame in an upright position by pressing the rotating means against the main frame and the blade housing to control the degree of the pressing, and (b) the work. 6. The vehicle according to claim 4, further comprising a manual override by which a person controls the attitude of the main frame. 7. The adjusting means for allowing a change in relative height of the grass bush housing with respect to the main frame.
The Kusanagi vehicle described.