JP2523534Y2 - Movement management machine - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, the fuel is smoothly supplied from the fuel tank to the carburetor of the engine without being affected by the forward or backward leaning posture of the vehicle body, and the operation is performed with excellent workability. A mobile management machine capable of.

[0002]

2. Description of the Related Art As a movement management machine such as a tiller, an engine, a transmission and the like are provided, and predetermined work is performed by rotating wheels and tiller claws with power from the transmission.

[0003] In this type of movement management machine, a fuel tank provided above an engine is formed in a flat shape so as not to obstruct a working view. For example,
In Japanese Patent No. 42964, as shown in FIG.
A tiller is shown. The fuel in the fuel tank 2 is supplied to the carburetor of the engine 1 via an appropriate oil passage, and the power of the engine 1 is transmitted to the wheels 4 via a transmission. The operator operates a movement control device by operating a clutch lever and the like provided on a handle 6 extending from a handle stay 3 provided on a case of the transmission.

However, in the actual work, the gantry 5 is frequently tilted forward, backward, or right and left during the work due to the undulation of the soil and the like. As the gantry 5 leans forward or backward, fuel flows in the fuel tank 2 above the engine 1. That is, when the gantry 5 tilts forward, the fuel tank 2
The fuel accumulates on the front side of the fuel tank 2, and conversely, on the rear side of the fuel tank 2 when the gantry 5 is tilted rearward. For this reason, it is not enough to tilt left and right so that the fuel in the fuel tank 2 is efficiently consumed, but it is necessary to provide fuel supply ports at least at two places before and after the fuel tank 2.

[0005]

The complication of the fuel supply system can be avoided by using a tall fuel tank 2. However, when the height of the fuel tank 2 is increased, the height of the body increases due to protruding upward from the engine, so that the visibility of an operator standing behind the handle 6 is obstructed. Moreover, since the center of gravity is increased, the stability of the aircraft is lacking. Further, since there is a limit to the capacity of the fuel tank 2 that can be mounted, frequent replenishment of fuel is required, which causes a reduction in work efficiency.

[0006] Further, the flow of the fuel is not limited to the front-back direction, but also occurs in the left-right direction. For example, when the gantry 5 is tilted to the left, the fuel flows to the left in the fuel tank 2, and the fuel supply may be hindered even if the fuel supply port is provided in two places before and after. . Further, the body is swung right and left with the flow of fuel in the left and right direction. At this time, the fuel tank 2
Is at a high position, the moment acting in the left-right direction due to the flow of the fuel is large. Therefore, the straight-ahead operation of the aircraft is likely to be unstable.

The present invention has been devised in order to solve such a problem, and the height is increased by disposing a large-capacity fuel tank extending in the left-right direction and extending vertically in the center of the gantry. Without increasing the size, fuel supply is performed smoothly regardless of the backward leaning posture, forward leaning posture, or left and right tilting posture,
Moreover, it is an object of the present invention to provide a mobility management machine having excellent operability.

[0008]

The mobility management device of the present invention comprises:
In order to achieve the object, an engine 10 mounted at a front position of the gantry 30 and a transmission 20 to which the gantry 30 is connected at a rear portion thereof via a vertically extending gap between the engine 10 and A vertically extending gap between the engine 10 and the transmission 20 has a lower end approaching the gantry 30 extending in the left-right direction and having a height slightly higher than the height of the engine 10. A fixed fuel tank 40, and an oil passage 50 for forcibly supplying fuel from the fuel tank 40 to the carburetor 13 of the engine 10.
An oil supply port 44 is provided at an upper part of the fuel tank 40, and the oil passage 50 connects a fuel supply port 46 provided at a lower part of the fuel tank 40 to an oil receiving port 14 of the carburetor 13. I do. Here, it is preferable that the fuel pump of the engine 10 receives the negative pressure of the crankcase and supplies fuel from the fuel tank 40 to the carburetor 13 of the engine 10.

[0009]

With the construction described above, the movement management machine of the present invention is arranged such that the fuel tank 40 extends in the left-right direction in the vertically extending gap between the engine 10 and the transmission 20 and is long in the vertical direction. As a result, the position of the center of gravity is kept low, the stability of the aircraft is increased, and the operability is improved without obstructing the field of view of the operator. In addition, the fuel tank 40 can be used as a large-capacity tank, and the fuel is sent from the lower part of the fuel tank 40 to the carburetor 13 of the engine 10, so that almost all of the fuel in the fuel tank 40 can be used.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. The mobility management device of the present embodiment
As shown in FIGS. 2 and 3, the rear portion of the gantry 30 on which the engine 10 is mounted at the front position is fixed to the transmission 20. A space (gap) extending in the vertical direction is provided between the engine 10 and the transmission 20. In this space, a lower end extending in the left-right direction approaches the gantry 30 and is slightly higher than the height of the engine 10. High height fuel tank 40
Has been arranged.

The engine 10 is provided with a gripper 11 of a starter on a side thereof so as to be pulled. Also,
A muffler 12 is attached to the engine 10 on the side opposite to the grip 11. The power of the engine 10 is transmitted to the transmission 20 by an appropriate power transmission means such as a belt or a chain (not shown), and the power transmission is turned on / off by a tension clutch mechanism.

A rear portion of the gantry 30 is fixed to a case portion of the transmission 20. Wheels 31 are detachably attached to an output shaft projecting downward from the transmission 20, and an appropriate clutch and a clutch switching mechanism are interposed so that the movement management device can move forward and backward. The illustration is omitted because it is not different from the conventional one.

The engine 10 is mounted on the gantry 30 so as to be slightly movable in the front-rear direction in order to finely adjust the necessary tension applied to a power transmission mechanism such as a belt and a chain stretched between the engine 10 and the transmission 20. Is placed. The engine 10 and the transmission 20 are separated from each other so that a space extending vertically is provided between the two. The fuel tank 40 is disposed in the space extending in the vertical direction.

As shown in FIG. 4, the fuel tank 40 is mounted on the side wall of the engine 10 and is formed by molding a synthetic resin into a shape corresponding to the side wall. Two mounting flanges 4 above and one below the fuel tank 40
1 to 43 are formed. These mounting flanges 4
The fuel tank 40 is fixed to the engine 10 in a state where the fuel tank 40 is supported at two points at the upper side and at one point at the lower side by fastening bolts to the brackets provided on the engine 10 via 1 to 43. Since the fuel tank 40 is disposed by utilizing the space between the engine 10 and the transmission 20 in this manner, the dimensions of the fuel tank 40 can be made sufficiently large in the vertical and horizontal directions, and the large capacity Fuel tank 40
It can be.

An oil supply port 44 is provided at an upper portion of the fuel tank 40, and fuel such as gasoline and mixed oil is supplied through the oil supply port 44. The lubrication port 44 is opened and closed by a cap 45. A fuel supply port 46 is provided at a lower portion of the fuel tank 40.
Is supplied from the fuel supply port 46 to the carburetor 13 of the engine 10 via the oil passage 50.
In the drawings, the upper portions of the engine 10, the transmission 20, and the fuel tank 40 are shown in an exposed state. However, in practice, covers are mounted on these to protect the fuselage and to ensure worker safety. ing. For example, the fuel tank 40
By forming an arm portion for attaching a cover to a bracket for attaching to the engine 10 and attaching a cover to the arm portion, an upper portion from the engine 10 to the transmission 20 can be covered.

The oil passage 50 is connected to an introduction pipe 53 connected to the oil receiving port 14 of the carburetor 13 through an outlet pipe 51 drawn out from the fuel supply port 46 and an on-off valve 52. The introduction pipe 53 branches on the way, one of which is a manual refueling pipe 54 for manually feeding the fuel to the carburetor 13, and the other is an automatic refueling pipe 55 for feeding the fuel to the carburetor 13 by receiving the negative pressure of the crank chamber. As the manual refueling pipe 54, a commercially available pipe that generates a negative pressure by manually moving a diaphragm, for example, and sucks fuel from the fuel tank 40 by the negative pressure is used. As the automatic refueling pipe 55, a type in which a negative pressure periodically generated in a crank chamber is guided to the carburetor 13 and the diaphragm is vibrated by the negative pressure is known. The fuel introduced into the carburetor 13 passes through the mixture supply pipe 15 to the engine 1.
0 is introduced.

Excess fuel sent to the carburetor 13 is returned to the fuel tank 40 via a return pipe 56 extending from the carburetor 13 to the upper portion of the fuel tank 40.

The return pipe 56 branches off from the middle of the outlet pipe 51.
Is provided. Bypass pipe 5
Reference numeral 7 is made of a transparent or translucent synthetic resin, and has a function as a level gauge for observing the fuel level inside the fuel tank 40 by observing the fuel level inside. The bypass pipe 57 is shown as a pipe member independent of the fuel tank 40 in the drawing, but may be a straight hollow body integrated with the fuel tank 40 or fixed to a side wall of the fuel tank 40. .

The branch pipes 58 and 5 are provided at locations where the manual lubrication pipe 54, the automatic lubrication pipe 55, the bypass pipe 57 and the like branch.
8 are provided, and snap rings 59, 59 are provided.
The manual oil supply pipe 54, the automatic oil supply pipe 55, the bypass pipe 57 and the like are connected to the outlet pipe 51, the introduction pipe 53, the return pipe 56, and the like.

As described above, the vertically extending space created between the engine 10 and the transmission 20 is provided by the fuel tank 40.
By using the fuel tank as an arrangement portion, the fuel tank can be used as a large-capacity tank, for example, as compared with the conventional fuel tank 2 shown in FIG. Therefore, it is not necessary to frequently refuel, and interruption of work due to refueling can be avoided. In addition, despite the use of the large-capacity fuel tank 40, the height of the movement management machine is reduced, the position of the center of gravity is low, and the visibility of the operator is not obstructed, so that the operability is stabilized.

Further, the fuel tank 40 is located substantially at the center of the gantry 30 in the front-rear direction. Therefore, even when the gantry 30 is tilted forward, backward, or left and right during the operation, the direction of the moment about the wheel 31 does not largely change. Further, since a method is employed in which the fuel is guided from the lower portion of the fuel tank 40 to the carburetor 13 by the negative pressure, the fuel is smoothly supplied regardless of whether the gantry 30 is tilted forward or backward or left and right.

[0022]

As described above, in the movement management machine according to the present invention, the lower end of the gantry 3 extends in the vertical direction between the engine 10 and the transmission 20 in the gap extending in the vertical direction.
0, and has a height slightly higher than the height of the engine 10, and the fuel tank 40 fixed to the engine 10 is arranged. Despite this, the position of the center of gravity is kept low, the balance between the front and rear and the right and left of the body is good, and a mobility management machine excellent in workability can be obtained. Further, since a method of feeding fuel from the lower part of the fuel tank 40 to the carburetor 13 of the engine 10 is adopted, the fuel in the fuel tank 40 is smoothly dispersed regardless of the forward tilt, the backward tilt, or the right-left tilt of the body. 13 to improve the fuel use efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a conventional mobility management device.

FIG. 2 is a side view showing a main part of the mobility management device according to the embodiment of the present invention;

FIG. 3 is an arrow view along the line III-III in FIG. 2;

FIG. 4 is a rear view of the fuel tank.

FIG. 5 is an exploded perspective view showing an example of an oil passage.

[Description of Signs] 10 engine 13 carburetor 14 oil receiving port 20 transmission 30 gantry 40 fuel tank 44 lubrication port 46 fuel supply port 50 oil passage

Claims (1)

(57) [Scope of request for utility model registration] 1. A vertical direction between an engine (10) mounted on a front position of a gantry (30) and the engine (10).
A transmission (20), to which the gantry (30) is connected at the rear part via a gap extending to the transmission, and a gap extending in a vertical direction between the engine (10) and the transmission (20), A fuel tank (40) extending in the left-right direction and having a lower end approaching the gantry (30), having a height slightly higher than that of the engine (10), and fixed to the engine (10); 40) to the carburetor (1) of the engine (10)
An oil passage (50) for forcibly supplying fuel to 3),
An oil inlet (44) is provided at an upper part of the fuel tank (40), and the oil passage (50) is connected to a fuel supply port (46) provided at a lower part of the fuel tank (40) by the carburetor (1).
3) A mobility management machine connected to the oil receiving port (14).