JP3795142B2 - Crawler type passenger management machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a passenger management machine called a high foot management machine.
[0002]
[Prior art]
Due to the need to mechanize field weeding and digging potatoes, a field management machine has been developed, and this management machine is referred to as an agricultural work machine (hereinafter simply referred to as “work machine”) such as a rotor, a cultivator, and a calicibeta. ) Is the basic form.
As is well known, a tractor having an engine at the front of an airframe having front and rear wheels, and a seat and a three-point hitch (metal fitting for locking the work machine) at the rear is the mainstream.
Such a tractor is quite heavy, and the wheels will tread the soil. If it is hardened, the air permeability and water permeability deteriorate, which is not preferable for the field.
In order to reduce the contact pressure, it is necessary to consider the use of crawlers.
[0003]
A combine is known as using a crawler (see Japanese Utility Model Publication No. 49-44706). A combine is a self-propelled machine that simultaneously harvests, threshes and sorts rice. As is clear from the above publication, the front part is provided with a weeding and cutting blade, and the rice is harvested. The combine proceeds as if straddling the stump. Therefore, the underfloor height of the combine is not so large.
[0004]
[Problems to be solved by the invention]
On the other hand, weeding of furrows is an important task for management machines. During this work, it is not permissible to damage the crops planted in the bush. Since the crop is 50 to 80 cm high, it cannot be cut with a low floor working machine such as a combine. Further, the combine shown in the above publication has a very bad view of the front because the passenger seat is at the rear.
Therefore, there is no choice but to manage with a tractor with a large wheel diameter and a large underfloor height. However, as described above, there remains a problem that the soil can be crushed. Moreover, even if it is a tractor, the front view is not good because the engine is at the front.
Therefore, the present invention is aimed at (a) reducing the ground pressure, (b) improving the forward view, and (c) sufficiently increasing the underfloor height.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the first aspect of the present invention includes a side frame (15) that includes a hitch for attaching a work machine to the front and rear and supports the driving wheel (12), the driven wheel (13), and the idler wheel (14). The floor (22) is stretched on the body frame (20) disposed above the side frame (15) , the passenger seat (25) is disposed on the floor (22) , and the engine (36) It is a crawler type riding management machine that self-runs with the power from the vehicle , and the occupant seat (25) is arranged in the longitudinal center of the crawler (10) , and an engine (36) is provided below the occupant seat (25 ). The drive wheel (12) for driving the crawler (10) is disposed behind and below the engine (36) and the mission (37) via the side frame (15), and the rear hitch (28) the drive wheel And it is disposed above the front of the 12), the transmission (37), behind the engine (36), characterized in that attached to the machine frame located above the side frames (15) (20) And
Since it is a crawler vehicle, the contact pressure can be made sufficiently small. Since the heavy engine is placed in the center of the car body and below the passenger seat, it is well balanced even when front and rear work machines are attached, and the front view is well open, improving work efficiency. be able to.
In addition, since the rear hitch can be placed sufficiently forward, even if a work implement is attached to the rear hitch, a large overturning moment does not occur, and stable work can be continued.
[0006]
A second aspect of the present invention provides the side frame (15) that pivotally supports the driving wheel (12), the driven wheel (13), and the idler wheel (14) for winding the crawler (10). The airframe frame (20) is coupled via height adjusting ride frames (50), (60) so that the floor height can be adjusted as necessary.
In addition to claim 1 , the aircraft frame can be raised and lowered when the floor height needs to be changed due to crop type or other reasons. Therefore, the underfloor height can be sufficiently increased.
[0007]
According to a third aspect of the present invention, in the second aspect, a transmission member for transmitting torque from the transmission (37) to the drive wheel (12) is enclosed by a transmission case (55), and the transmission case (55) is enclosed by the side frame (15). By fixing, the transmission case (55) is a part of the connecting member between the side frame (15) and the machine body frame (20).
In addition to claim 2, since the transmission case is used as a connecting member for the side frame and the machine body frame without being limited to a simple protective case, the parts and members can be reduced and the weight can be reduced.
[0008]
A fourth aspect of the present invention is characterized in that, in the third aspect, the rear slide frame (60) of the height adjusting slide frames is attached to the transmission case (55).
According to a third aspect of the present invention, the transmission case is a member that spans between the drive wheel on the crawler side and the mission on the body frame side, and the slide frame is a member that connects the crawler side and the body frame side. Therefore, if the rear slide frame is fixed to the transmission case, the slide frame can be reduced in size and simplified.
[ 0009 ]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a perspective view of a crawler type riding management machine 1 according to the present invention. The crawler type riding management machine 1 includes a pair of left and right crawlers 10 and 10 (here, the crawler 10 is a crawler belt 11, a driving wheel 12, and a driven wheel 13). , The idle wheel 14 (... indicates a plurality, and the same applies hereinafter) and the side frame 15 that supports these wheels), the body frame 20 is handed over, and the steps on the body frame 20 are performed. This is a passenger crawler vehicle that stretches the floor 22 and also has a steering handle 24 and an occupant seat 25, and is a management machine provided with a front hitch 27 and a rear hitch 28 in front of and behind the body frame 20. These hitches 27 and 28 have a lift function that raises a working machine (not shown) to an upper position that does not get in the way when traveling on agricultural roads or ordinary roads.
[ 0010 ]
FIG. 2 is a side view of the crawler type riding management machine according to the present invention. The driving wheel 12 is attached to the rear portion of the side frame 15 in the crawler via the bracket 31 and the driven wheel 13 is attached to the front portion via the bracket 32. It shows that the idler wheels 14 are attached to the lower part via the triangular brackets 33 and the crawler belt 11 is wound around them.
[ 0011 ]
FIG. 3 is an internal structural view of the crawler type riding management machine according to the present invention, and shows the engine 36 and the mission 37 attached to the body frame 20 via the bracket 35. The engine 36 is also disposed in a space surrounded by the seat rail 38 and the cowling 39 that support the occupant seat 25. 41 is a muffler.
The crawler belt 11 is wound around a driving wheel 12, a driven wheel 13, an idler wheel 14 ... supported by a side frame 15 extending in the front-rear direction, and is described above between the left and right side frames 15 above the side frame 15. A body frame 20 is disposed (see FIGS. 3 and 4), and an engine 36 and a mission 37 are attached to and supported by the body frame 20 behind the engine 36.
[ 0012 ]
FIG. 4 is a diagram showing the connection between the side frame and the body frame of the present invention, and shows a structure in which the body frame 20 is supported on the side frame 15 via the front slide frame 50 and the rear slide frame 60.
The front slide frame 50 includes a fixed frame 51 fixed to the side frame 15, a moving frame 52 that is slidable in contact with the fixed frame 51 and slidable up and down, and a lock bolt 53 that fixes the moving frame 52 to the fixed frame 51. (... indicates a plurality. The same shall apply hereinafter).
[ 0013 ]
Further, the rear portion of the transmission case 55 is fixed to the bracket 31 that supports the drive wheel 12, the transmission case 55 extends obliquely upward to the front, and the middle lower portion of the transmission case 55 is firmly fixed to the side frame 15 by the sub bracket 56. The rear slide frame 60 is attached to the inner surface of the front portion of the transmission case 55.
[ 0014 ]
As with the front slide frame 50, the rear slide frame 60 includes a fixed frame 61, a movable frame 62 that slides in contact with the fixed frame 61, and a lock that fixes the movable frame 62 to the fixed frame 61. The fixed frame 61 fixed to the rear portion of the side frame 15 is characterized by being significantly smaller in length than the fixed frame 51 on the front slide frame 50 side.
[ 0015 ]
The transmission case 55 is a protective case that surrounds a transmission member composed of a sprocket 58 connected to the universal joint 57, a sprocket (not shown) connected to the drive wheel 12 and a chain 59. 15 and a part of the connecting member between the body frame 20 and, specifically, as described above, the length of the rear slide frame 60 can be shortened.
[ 0016 ]
The body frame 20 is a rectangular frame in which a plurality of cross beams 20b are passed to two longitudinal beams 20a, 20a, and cross pipes 65, 66 are fixed to the front and back surfaces of the machine body frame 20, respectively. The slide pipes 67 are slidably attached, and the ends of the slide pipes 67 are fixed to the moving frames 52 and 62.
[ 0017 ]
A bracket 71 is erected at the center upper portion of the side frame 15, a feed screw 72 is screwed into the bracket 71, the tip of the feed screw 72 is connected to the longitudinal beam 20a, and the feed screw 72 is rotated, whereby the longitudinal beam 20a. The side frame 15, that is, the crawler 10 is configured to be movable in the vehicle width direction from the starting point.
[ 0018 ]
FIG. 5 is a plan sectional view of the crawler type riding management machine of the present invention. In the cross pipes 65 and 66 attached to the machine frame 20 that supports the engine 36 and the mission 37, the split pins 68 are removed and the lock pins 69 are removed. The crawler interval can be changed by inserting the lock pins 69 and setting the split pins 68 after the slide pipes 67 are moved in and out (up and down in the figure).
[ 0019 ]
Further, the transmission 37 and the sprocket 58 in the transmission case 55 are connected by the universal joints 57 and 57. These universal joints 57 and 57 can also change an axial length by spline coupling.
Therefore, even if the distance and the height difference change between the mission 37 and the sprocket 58 in the transmission case 55, the power transmission can be continued.
[ 0020 ]
FIG. 6 is a plan view of the crawler type riding management machine according to the present invention, in which the left and right crawlers 10 and 10 are covered with fenders 74 and 74, and the left and right and rear floors 22 of the steering handle 24 have a sufficient area. It shows that it has.
[ 0021 ]
The operation of the crawler type riding management machine having the above configuration will be described below.
FIG. 7 is a schematic side view of the crawler type riding management machine according to the present invention. Since the heavy engine 36 is arranged at the approximate center in the longitudinal direction of the crawler 10, the center of gravity is substantially in the center, and as a result, before or after When a working machine (not shown) is attached, the front-rear balance does not change greatly.
[ 0022 ]
Further, conventionally, the rear hitch 28 is generally attached to the tip of a bracket that protrudes largely rearward from the crawler 10. In this case, when a downward external force acts on the rear hitch 10, the front part of the fuselage is easily lifted.
In contrast, in the present invention, as shown in the figure, the drive wheel 12 is disposed below and behind the engine 36 and the mission 37, so that the rear hitch 28 is placed at a position close to the mission 37 beyond the drive wheel 12. Can do. Then, even if a downward external force is applied to the rear hitch 28, the moment is reduced, and there is no fear that the front part of the aircraft will be lifted.
[ 0023 ]
FIGS. 8A and 8B are diagrams showing a procedure for changing the floor height of the crawler type riding management machine according to the present invention.
The floor height (the ground height) when the bottom of the mission 37 is assumed to be the lowest from the body frame 20 will be described.
In (a), it is assumed that the current floor height is H1. When it is necessary to change the floor height, a jack (not shown) is hung on the lower surface of the body frame 20, and the front and rear slide frames 50, 60 are set in a free state. What is necessary is just to raise / lower the body frame 20 with a jack and to make the front and rear slide frames 50 and 60 fixed at a desired position.
The height change is not necessarily frequent. That is, since it changes according to the kind of crop, a change of a season, etc., it can fully respond by performing height adjustment work manually as mentioned above.
(B) shows the state after changing the floor height to H2 (H2> H1). It can be seen that the height of the body frame 20 is increased without changing the height of the crawler 10.
[ 0024 ]
FIGS. 9A and 9B are diagrams showing a crawler interval changing procedure of the crawler type riding management machine according to the present invention.
(A) shows the crawler type riding management machine 1 set to a relatively narrow interval W1.
(B) shows the crawler type riding management machine 1 set to a relatively wide interval W2 by rotating the feed screws 72, 72.
By simultaneously performing FIG. 8 and FIG. 9, the floor height (ground height) and the crawler interval can be freely changed.
[ 0025 ]
The universal joint 57 may be of any type as long as it is a universal shaft joint, but may be a constant velocity type universal shaft joint called a so-called constant velocity ball joint.
The transmission member housed in the transmission case 35 may be a belt-pulley or a gear-shaft, and the transmission case 35 may be a sufficiently rigid box.
[ 0026 ]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
The first aspect includes a side frame (15) that includes a hitch for attaching the work machine to the front and rear, and that supports the drive wheel (12), the driven wheel (13), and the idler wheel (14). The floor (22) is stretched on the fuselage frame (20) disposed above (15) , the occupant seat (25) is disposed on the floor (22) , and self-propelled by the power from the engine (36). a crawler type riding tiller, as well as arranged in a substantially longitudinal center of the passenger seat (25) of the crawler (10), arranged an engine (36) below the rider seat (25), the crawler (10 ) Is disposed behind and behind the engine (36) and the mission (37) via the side frame (15), and the rear hitch (28) is disposed on the driving wheel. (12) forward and upward Arrangement, and the transmission (37), behind the engine (36), characterized in that attached to the machine frame located above the side frames (15) (20).
Since it is a crawler vehicle, the contact pressure can be made sufficiently small. Since the heavy engine is placed in the center of the car body and below the passenger seat, it is well balanced even when front and rear work machines are attached. be able to.
In addition, since the rear hitch can be placed sufficiently forward, even if a work implement is attached to the rear hitch, a large overturning moment does not occur, and stable work can be continued.
[ 0027 ]
A second aspect of the present invention provides the side frame (15) that pivotally supports the driving wheel (12), the driven wheel (13), and the idler wheel (14) for winding the crawler (10). The machine body frame (20) is coupled via height adjusting slide frames (50), (60) so that the floor height can be adjusted as necessary.
Since it is a crawler vehicle, the contact pressure can be made sufficiently small.
In addition to the effect of claim 1 , when the floor height needs to be changed due to the type of crop or other reasons, the body frame can be raised and lowered. Therefore, the underfloor height can be sufficiently increased.
[ 0028 ]
According to a third aspect of the present invention, in the second aspect, a transmission member for transmitting torque from the transmission (37) to the drive wheel (12) is enclosed by a transmission case (55), and the transmission case (55) is enclosed by the side frame (15). By fixing, the transmission case (55) is a part of the connecting member between the side frame (15) and the machine body frame (20).
In addition to the effects of the first and second aspects , since the transmission case is used as a connecting member for the side frame and the machine body frame without being merely a protective case, the parts and members can be reduced and the weight can be reduced.
[ 0029 ]
A fourth aspect of the present invention is characterized in that, in the third aspect, the rear slide frame (60) of the height adjusting slide frames is attached to the transmission case (55).
In addition to the effects of claims 1, 2, and 3, the transmission case is a member that spans between the drive wheel on the crawler side and the mission on the body frame side, and the slide frame also includes the crawler side and the body frame side. It is the member which connects. Therefore, if the rear slide frame is fixed to the transmission case, the slide frame can be reduced in size and simplified.
[Brief description of the drawings]
FIG. 1 is a perspective view of a crawler type riding management machine according to the present invention. FIG. 2 is a side view of a crawler type riding management machine according to the present invention. FIG. 4 is a diagram showing the connection between the side frame and the fuselage frame of the present invention. FIG. 5 is a plan sectional view of the crawler type riding management machine of the present invention. FIG. 6 is a plan view of the crawler type riding management machine of the present invention. 7] Schematic side view of the crawler type riding management machine according to the present invention. [Fig. 8] A diagram showing the procedure for changing the floor height of the crawler type riding management machine according to the present invention. Diagram showing how to change crawler interval [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Crawler type riding management machine, 10 ... Crawler, 11 ... Crawler belt, 12 ... Drive wheel, 13 ... Driven wheel, 14 ... Freewheeling wheel, 15 ... Side frame, 20 ... Airframe frame, 22 ... Floor, 24 ... Operation Direction handle, 25 ... Crew seat, 27 ... Front hitch, 28 ... Rear hitch, 36 ... Engine, 37 ... Mission, 50 ... Front slide frame for height adjustment, 55 ... Transmission case, 57 ... Universal joint, 60 ... Rear slide frame for height adjustment, 65, 66 ... cross pipe, 67 ... slide pipe, 69 ... lock pin.

Claims (4)

It has a side frame (15) that is equipped with a hitch for attaching work implements in the front and rear, and that supports the drive wheel (12), the driven wheel (13), and the idler wheel (14), and above the side frame (15) A crawler-type riding management machine in which a floor (22) is stretched on a body frame (20) disposed on the vehicle body, an occupant seat (25) is disposed on the floor (22) , and self-propelled by power from the engine (36). Because
The occupant seat (25) is arranged in the longitudinal center of the crawler (10) , and an engine (36) is arranged below the occupant seat (25) .
A drive wheel (12) for driving the crawler (10) is disposed behind and below the engine (36) and the mission (37) via the side frame (15), and a rear hitch (28) is provided. Arranged in front of and above the drive wheel (12),
The mission (37) is attached to the airframe (20) located behind the engine (36) and above the side frame (15).
This is a crawler type passenger management machine. Drive wheel for winding the crawler (10) (12), a driven wheel (13), wherein the side frame (15), height adjustment slide frame for supporting the idle wheel (14) (50), The crawler type riding management machine according to claim 1, wherein the machine body frame (20) is coupled via (60) so that the floor height can be adjusted as necessary. The enclosure mission the transmission member for transmitting a torque to a drive wheel (12) transmission case from (37) (55), by fixing the transmission case (55) to said side frame (15), the transmission case (55) 3. The crawler type riding management machine according to claim 2 , wherein a part of a connecting member between the side frame (15) and the machine body frame (20) is used. The crawler type riding management machine according to claim 3 , wherein a rear slide frame (60) of the height adjusting slide frames is attached to the transmission case (55) .

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