JPH09323668A - Grass separating guard for passenger control working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deformation or breakage of a grass separating guard by forming the grass separating guard of a front frame and a rear main frame, and mounting a frame for front frame on the front part of the rear main frame in such a manner as to be longitudinally expansible/contractible and fixable. SOLUTION: A front frame 61 is formed of a frame member having a small diameter allowing the insertion into the front part of a rear main frame 62, the vertically arranged front frames 61 are mutually connected by use of a connecting beam 63, and a grass separating plate 65 formed by bending a soft or elastic plate member such as resin is fixed to the front part. A compression spring 66 is nipped between the front part of the rear main frame 672 and the front frame 61 rear end inserted thereto to energize the front frame 61 forward. Even when a grass separating guard G makes contact with a levee, the front frame 61 is moved back against the energizing force of the compression spring 66 and contracted, and grass separating plate 65' is moved to absorb the impact, so that no excessive force is added to the grass separating guard G. Therefore, the grass separating guard G is never deformed, and another obstruction is nor damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a riding management machine which runs in a paddy field or a field and performs management work such as spraying of chemical liquid or fertilizer and weeding work.

[0002]

2. Description of the Related Art Conventionally, an elevating link mechanism is arranged at the rear part of an airframe, and a working machine such as a sprayer or a rice transplanter is attached to the rear part of the link mechanism so as to perform planting work in a paddy field, control or weeding. A passenger management work vehicle capable of performing management work is known. In the case of performing the control work with such a passenger management work vehicle, a chemical tank, a power sprayer, and a boom equipped with a nozzle are arranged at the rear part of the machine body so that the spraying work can be performed. In addition, a weeding guard made of a frame frame made of steel material is arranged on the outer periphery of the wheel, and when traveling for controlling or weeding in the field,
It was constructed so that the crops would not get caught in the wheels.

[0003]

However, the conventional weed guard installed on the front wheels of the conventional passenger management work vehicle collides with the weed guard on the ridges when the machine is turned at the end position of the field. There were cases where the ridges were damaged or the obstacles were brought into contact with other obstacles, and the frame frame was bent, which interfered with the front wheels. When running with the frame frame bent, there was a problem that the wheels were worn or the weed guard lacked the weeding action, and the crops were caught in the wheels, cutting or damaging the crops. . In addition, the conventional grass guard is fixed to the support portion of the wheel, and when the height is short in the growing state of the crop, it directly hits the wheel without contacting the grass guard,
There was also a problem of getting caught in the wheels.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. Support the aircraft with front and rear running wheels,
In a passenger management work vehicle in which a weeding guard that covers the front and rear and the side of the upper and lower central portions of the front running wheels on the front side is arranged, the weeding guard is composed of a front frame and a rear main frame,
A front frame is attached to the front part of the rear main frame so as to be extendable and contractible in the front-rear direction. In addition, the vegetation guard is configured so that the vertical height can be adjusted with respect to the machine body.

[0005]

Next, an embodiment of the present invention will be described. 1 is an overall side view of a passenger management work vehicle provided with a weed guard of the present invention, FIG. 2 is an overall plan view of a passenger management work vehicle having a weed guard of the present invention, and FIG. 3 is a weed management work vehicle of the present invention. A partial side view of the passenger management work vehicle showing the support structure of the guard,
4 is a partial cross-sectional rear view of the step arranged on the weed guard, FIG. 5 is a partial rear view of the pivot support mechanism of the step, and FIG.
Is a side sectional view showing a support mechanism of the weed guard of the present invention, FIG. 7 is a partial plan view of a passenger management work vehicle on which a container is placed,
FIG. 8 is an overall side view of a passenger management work vehicle with a container placed at the rear, FIG. 9 is a partial side view of a passenger management work machine with a weeder attached to the rear of the machine, and FIG. 10 is a partial plan view of the weeder. .

First, the passenger management work vehicle 1 will be described with reference to FIGS. The engine E is mounted above the front part of the body frame 3 which is the main frame, the mission case M is arranged in the lower center of the body frame 3 in the front-rear direction, and the front axle case 5 is arranged in front of the mission case M.
The front traveling wheel 6 is supported via the rear case, the rear accelerator case 7 is connected to the rear portion of the mission case M, and the rear accelerator case 7 supports the rear traveling wheel 8. Then, the front step of the front part of the vehicle body frame 3
The handrail 4 is fixed to the side of the front step 11, and the engine E is attached to the upper center of the front step 11.
The hood 9 for covering the front column 27 is installed at the rear of the hood 9.
The steering handle 10 is attached to the upper part of the. A vehicle body cover 1 in which a step 12a is formed at the rear of the front step 11 and a mission case M or the like is mounted on the rear of the step 12a.
2 are arranged. A driver's seat 1 is provided above the vehicle body cover 12.
3, the main transmission lever 22, a work clutch lever or a lift lever 23 serving as a work lever are projected on the upper surface of the vehicle body cover 12 on the side of the driver's seat 13, and the left and right brakes are provided on the step 12a on the right side of the front column 27. The operation part B is configured by arranging the pedals 25, 25.

Further, a link mechanism 19 composed of a top link 17 and a lower link 18 is fixed to the rear portion of the passenger management work vehicle 1, and a hitch frame 20 is fixed to the rear end of the link mechanism 19. Then, as shown in FIG.
When the spraying machine 15 is installed, the front and rear traveling wheels 6
・ 8 is driven to move between rice fields in the paddy field, the spraying work machine 15 is raised according to the crop, and the boom 16 projecting to the left and right is used to move the spray work machine 15 to the upper rear part of the body frame 3. The chemical in the chemical tank 14 to be placed can be sprayed.

Instead of mounting the chemical tank 14 on the rear upper portion of the vehicle body frame 3 described above, a loading container 28 may be mounted as shown in FIGS. 7 and 8. The loading container 28 is in the shape of a box having an opening at the top. On the lower surface of the loading container 28, the upper end of a telescopic support portion 29 shaped like a pantograph is fixed, and the lower end of the telescopic support portion 29 is mounted on the vehicle body frame 3. It is fixed to. An elevating cylinder (not shown) is arranged below the loading container 28 so that the loading container 28 can be moved up and down to a predetermined height. Further, a connecting rail 30 having a U-shape in plan view is fixedly provided on the outer peripheral surface of the stacking container 28 so that the conveyor C can be locked.

The conveyor C comprises an upper conveyor 31 and a lower conveyor 32 around which a wide conveyor belt 34 is wound, and a drive source 33 such as an electric motor capable of reversing forward and backward is arranged on the upper side of the upper conveyor 31. And the upper conveyor 31
The conveyor belt 34 is driven. A transmission case 35 is arranged below the upper conveyor 31 to transmit power to the lower conveyor 32. Further, the upper conveyor 31 and the lower conveyor 32 are configured to be foldable so that they can be stored and transported on the machine body. A supporting wheel is disposed below the lower conveyor 32 to support the lower portion of the conveyer C, and hook bodies 37 are disposed on the upper conveyor 31 on the left and right sides of the upper portion. The body 37 can be locked to the connecting rail 30. Therefore, the above-mentioned connecting rail 30 is viewed in a plan view
Since it is formed in a character shape, by changing the position where the hook bodies 37 and 37 are locked to the left and right side surfaces or the rear surface of the connecting rail 30, the conveyor C can be conveyed without changing the direction of the machine body.
Is reversed to facilitate loading and unloading of luggage to and from the loading container 28 so that the passenger management work vehicle 1 can be used as a transport vehicle.

Further, as shown in FIGS. 9 and 10, the weeder D can be mounted on the hitch 20 of the link mechanism 19. The weeder D has a drive case 39 that is long in the left-right direction.
A support frame 40 for supporting the drive case 39, a float 41 for maintaining the weeder at a constant height, the drive case 39
It is composed of a weeding part 42 provided on the rear surface of the. Further, the weeding portion 42 is composed of a cylindrical base portion 43 and a plurality of spring tines 44, 44 ... Which protrude in the radial direction from the outer peripheral surface of the base portion 43, and is rearward from an appropriate position on the rear surface of the drive case 39. The drive shaft 45 protruding to the base 43
, And the spring tines 44, ... Are rotated about the drive shaft 45. The spring tines 44 are elastic rods, and project radially outward from the outer peripheral surface of the base portion 43 at regular intervals, and linearly form a plurality of spring tines 44, 44 ... In the front-back direction of the base portion 43. Spring tines 44, 44 ...
・ We try to pull out the weeds that have grown between the crops such as seedlings. Further, on the rear surface of the support frame 40 above the arrangement position of the weeding portion, an arm 46 is projected rearward, the arm 46 extends rearward from above the weeding portion 42, and the rear end portion of the arm 46 is seen in a plan view. An inverted V-shaped grooving machine 47 is fixedly installed so that grooving can be performed simultaneously with weeding work.

Next, the weed guard G arranged on the outer peripheral surface of the front traveling wheel 6 will be described. As shown in FIG. 2, a front gear case 50 is rotatably provided around an end of the front accelerator case 5 around a kingpin, and a front traveling wheel 6 is axially supported on a side portion of the front gear case 50. The steering handle 1 is attached to the front gear case 50 via a tie rod or the like.
By linking with 0, steering operation is possible. A grass guard G is fixed to the front gear case 50 so as to rotate integrally with the front traveling wheels 6 so that the front traveling wheels 6 are not entangled with crops.

The grass guard G is supported by the rear main frames 62, 62 arranged in two steps, one above the other, and a foldable step S is provided outside the rear main frame 62. The step S is shown in FIGS.
As shown in FIG.
It consists of. The rotating cylinder 53 is disposed below, and the rotating cylinder 53 is externally fitted to the main frame 62, and one end of the rotating plate 52 is fixed on the outer peripheral surface of the rotating cylinder 53. A step plate 51 is fixed to the other end of 52 via a hinge. On the outer peripheral surface of the rear main frame 62, the protrusion 6 shown in FIG.
2a is projected, and the contact portion 53a is projected to the side end portion of the rotating cylinder 53. When the rotating cylinder 53 is rotated to position the rotating plate 52 downward in the vertical direction, the contact portion 53a protrudes. It abuts against the portion 62a and restricts the rotation of the rotation cylinder 53. Further, a fitting portion 54 is fixedly provided on the step plate 51,
A fastening portion 51a is formed at one end of the wire 1, and a wire rope 55 is fastened to the fastening portion 51a.
The other end of which extends in the direction of the operating section B. On the other hand, in the operation section B, a handrail 4 is provided as shown in FIG.
An upper retaining plate 56 is fixed to the upper portion of the handrail 4, a lower retaining plate 57 is fixed to a lower position of the handrail, and a guide roller 58 is pivoted to the lower portion of the handrail 4 below the lower retaining plate 57. I support you. A hook knob 59 is fixed to the end of the wire rope 55.

Therefore, an intermediate portion of the wire rope 55 is hooked on the guide roller 58 so that the hook knob 59 is hooked on the upper hook plate 56 or the lower hook plate 57. Then, when the hooking knob 59 is hooked on the lower hooking plate 57, step S is rotated downward by its own weight, the rotating plate 52 is positioned downward, and the step plate 51 is moved downward as shown in FIG. As indicated by the double-dashed chain line S ′, when the operator is boarding, the rotation of the rotation cylinder 53 is restricted so that the rotation of the rotation plate 52 is restricted. The 51 is supported horizontally to serve as a step. Then, the hook knob 59 is attached to the upper hook plate 5.
6, the wire rope 55 is pulled upward, the step plate 53 is pulled upward, and the rotary cylinder 53 is rotated to move the rotary plate 52 and the step plate 51 as shown in FIG. In addition, the fitting portion 54 fixed to the step plate 51 and arranged in the up-down direction can be fitted to the upper rear main frame 62 so that the step S is accommodated.

As shown in FIGS. 2, 3 and 6, the weed guard G of the invention is a rear main frame having a U-shape in plan view, which covers the left and right side surfaces and the rear portion of the front running wheels 6. 62 and a front frame 61 that covers the front portions of the front running wheels 6, and is attached to the front gear case 50. The rear main frame 62 is formed by bending a hollow pipe material into a “U” shape in a plan view, arranging the rear main frame 62 in upper and lower stages, and connecting a middle portion of the rear main frame 62 with a connecting rod 64. It is used and connected. The front frame 61 is composed of a frame member having a small diameter that can be inserted into the front portion of the rear main frame 62, and the front and rear frames 61, which are vertically arranged, are connected to each other by using a connecting rod 63. In this, a weeding board 65, which is formed by bending a soft or elastic plate material such as resin, is fixed. A compression spring 66 is sandwiched between the rear end of the front frame 61 and the rear end of the front frame 61, which is inserted into the front portion of the rear main frame 62.
The front frame 61 is biased forward. However, the compression spring 66 may not be provided, and the compression spring 66 may be fixed at an arbitrary position.

Further, as shown in FIG. 6, a mounting adjustment portion is provided on the side surface of the front gear case 50 to support the weed guard G so that the vertical mounting position can be changed. That is, the fixed stay 67 is projected rearward on the side surface of the front gear case 50, and the fitting cylinder 68 having an axial center in the vertical direction is fixedly provided at the end of the fixed stay 67. A sliding rod 69, which is slidable in the vertical direction, is loosely fitted inside the fitting cylinder 68,
A knob screw 70 is inserted from the outer peripheral surface of the fitting cylinder 68 to fix the sliding of the sliding rod 69, and the upper and lower end portions of the sliding rod 69 are
Rear main frame 62.6 covering the inside of the front running wheels 6
It is fixed in the middle of 2. Therefore, the mounting position of the weed guard G can be changed up and down by moving the sliding rod 69 up and down. In the present embodiment, the weed guard G is provided on the front traveling wheel 6, but the rear traveling wheel 8 is provided.
It can also be arranged in.

With such a structure, even when the weed guard G contacts the ridge or the like, the front frame 61 moves rearward and contracts against the biasing force of the compression spring 66. The hay plate 65 'is moved as shown by the chain double-dashed line to absorb the impact and prevent the hay guard G from being subjected to an unreasonable force. It does not damage anything. When the height of the crop is low, the knob screw 70 is loosened and the sliding rod 69 is moved downward so that the height of the weed guard G is lowered as shown by the chain double-dashed line in FIG. By moving it, it can be adjusted to the growth height of the crop, and can be adjusted to the position where the efficiency of weeding is highest.

[0017]

Since the present invention is constructed as described above, it has the following effects. That is, by making the front frame that covers the front part of the front wheels of the grass guard expandable, it can contract backward when the grass guard collides with an obstacle while the aircraft is traveling. Since it can absorb impacts and does not put an excessive load on the rear main frame,
It does not deform or damage the grass guard. Moreover, when the sward guard is brought into contact with the ridge, the ridge is not scraped off, and the configuration is suitable for field management work.

Further, by making the height of the sward guard adjustable, the position of the sward can be changed to a position with good sewage efficiency according to the growing condition of the crop, and the crop can be rolled into the wheel. Therefore, it is possible to manage the field without tearing the leaves.

[Brief description of drawings]

FIG. 1 is an overall side view of a passenger management work vehicle provided with a weed guard of the present invention.

FIG. 2 is an overall plan view of a passenger management work vehicle having a grass guard according to the present invention.

FIG. 3 is a partial side view of the passenger management work vehicle showing the support structure of the weed guard of the present invention.

FIG. 4 is a partial cross-sectional view of the rear view of the step of disposing the grass guard.

FIG. 5 is a partial rear view showing the pivotal support mechanism of the step.

FIG. 6 is a side sectional view showing a support mechanism for the weed guard of the present invention.

FIG. 7 is a partial plan view of a passenger management work vehicle on which a container is placed.

FIG. 8 is an overall side view of a passenger management work vehicle with a container placed on a rear portion thereof.

FIG. 9 is a partial side view of the riding management work machine in which a weeder is attached to the rear of the machine body.

FIG. 10 is a partial plan view of the weeder.

[Explanation of symbols]

 G grass guard 1 passenger management work vehicle 6 front running wheel 50 front gear case 61 front frame 62 rear main frame

Claims (3)

[Claims] 1. A passenger management work vehicle in which a body is supported by front and rear traveling wheels, and a weed guard is provided to cover the front and rear and side portions of the upper and lower central portions of the front front traveling wheel. A front guard and a rear main frame, and a front frame is attached to the front part of the rear main frame so that the front frame can be stretched and fixed in the front-rear direction. 2. A passenger management work vehicle in which a body is supported by front and rear traveling wheels, and a weed guard is installed on front and rear and side portions of a front and rear central portion of a front front traveling wheel. A weeding guard for a passenger management work vehicle, which is configured to be adjustable in vertical height with respect to the machine body. 3. A passenger control work vehicle in which a body is supported by front and rear traveling wheels, and a weed guard is provided to cover the front and rear and side portions of the upper and lower central portions of the front front traveling wheel. A weed guard for a passenger management work vehicle, which is configured to be movable in the front-rear direction and adjustable in the vertical position.