JPH0244643Y2 - - Google Patents

Description

[Detailed explanation of the invention] It is known that a walking type mobile agricultural machine such as a walking rice transplanter has a bonnet pivoted to the machine body so that it can be opened and closed.
The fuel tank and other hydraulic mechanisms for raising and lowering the wheels were arranged in a complicated manner in a narrow space, and there was no suitable place to attach or store supporting members such as stays that hold the bonnet in an open position.

The present invention was developed based on the above-mentioned circumstances, and its purpose is to attach the bonnet, which covers the engine, fuel tank, hydraulic mechanism for raising and lowering the wheels, etc., to the fuselage using the rear as a fulcrum, so that it can be opened and closed. At the same time, a stay for holding the bonnet in an open position is attached to the fuel tank so that it can be raised and lowered, and when the stay is raised, the stay holds the bonnet in the open position, and when it is lowered, the stay is housed and held along the fuel tank. With this configuration, the existing fuel tank can be effectively used as a mounting member for the stay, and the stay can easily support the open position of the bonnet, which is convenient for engine inspections, etc.
It is an object of the present invention to provide a bonnet support device for a walking type mobile agricultural machine, in which a stay can be well accommodated along a fuel tank when the bonnet is in a closed position.

The structure of the present invention will be described with reference to the embodiment shown in the drawings. Reference numeral 1 denotes a bonnet, the rear end of which is pivotally connected via a fulcrum shaft 3 to a bonnet stay 2 which is erected and fixed to the fuselage so that it can be opened and closed. ing. The illustrated bonnet 1 has a rear half recessed to form an auxiliary seedling stand 1a. Reference numeral 4 denotes a wedge-shaped engagement part that is integrally provided at the lower part of the rotating tip side of the bonnet 1, and this engagement part 4 is connected to a notched groove in a bonnet seat 8 that is fixed to the engine 7 via the bonnet 5 and bolts 6. 9 so that it can be inserted and removed freely. Reference numeral 10 denotes an L-shaped operating rod having a handle 10a and a locking pin 10b above the handle, and the locking pin 10b projects in the same direction (on the same vertical plane) as the handle 10a. The operating rod 10 is rotatably supported through a mounting hole 11 provided in the engaging portion 4 while being biased upward via a spring 12. 1
3 and 13' are spring receivers, and 14 is a split pin.

By the way, on the lower surface of the engaging part 4, there are locking grooves 15, 1 formed in an inverted V shape for positioning the locking pin.
6 are provided with a phase shift and at different heights. In the illustrated example, the upper locking groove 15 is perpendicular to the cutout groove 9 provided in the bonnet seat 8, and the lower locking groove 16 is perpendicular to the upper locking groove 15.
They are provided 90° out of phase, that is, in the same phase that coincides with the notch groove 9.

5 to 8 show the arrangement of various parts inside the bonnet 1, and show the engine 7 at the front via an engine frame 19 fixed to the transmission case 17 with bolts 18, and the engine 7 at the rear thereof. A tank bracket 21 is connected to two bolts 2 on the upper surface of a hydraulic cylinder 20 of a hydraulic mechanism for raising and lowering the wheels, which is located above and fixed to the upper part of the transmission case 17.
2 and 23, respectively, and a fuel tank 24 is bolted to this bracket 21.
The fuel tank 24 is arranged behind the engine 7 so that the top surface of the tank is located above the top of the engine 7 (see FIG. 5).

The tank bracket 21 is arranged to cover the upper part of the muffler 25 attached to the engine 7, as shown in FIGS. 5 and 6.
1 also serves as a heat shield plate, and a rising part 21' is provided at the front end of the bracket 21, so that the fuel overflowing from the tank 24 flows into the rising part 21'.
This prevents the metal from falling onto the muffler 25 by flowing to the left and right sides of the bracket 21, and a gap a is provided between the bracket 21 and the tank 24 to further enhance the heat shielding effect. 26 is a stay for keeping the bonnet open position,
This stay 26, as shown in FIGS. 7 and 8,
Tank mounting bolt 2 on one side of the rear of the fuel tank 24
The bonnet 1 is pivotably supported to be raised and lowered via a mounting bracket 28 that is fixed using the bonnet 7, and when the stay 26 is raised (when in use), the stay 26 holds the bonnet 1 in an open position, and when it is lowered, it is (When not in use) stay 26
is configured to be housed and held along the fuel tank 24. In the illustrated example, a curved receiving portion 26a is integrally provided at the tip of the stay 26,
When the stay 26 is erected, the curved receiving portion 26a supports and holds the bonnet 1 in the open position, and the stay 26
The bent portion 26b provided at the base end of the fuel tank 24
By making it come into contact with the side surface of the fuel tank 24 to perform a stopper action, it is possible to restrict lateral vibration when the bonnet 1 is upright, and when the stay 26 is not used, the tank can be attached to the rear other side of the fuel tank 24. The stay 26 is stably housed and held within the width of the bonnet 1 by holding the tip end of the stay 26 between clamps 29 fixed using bolts 27'.

Since the fuel tank 24 is utilized as a mounting member for the stay 26 in this way, there is no need to provide a separate mounting member for the stay 26, and there is no need to worry about mounting space, resulting in an ideal mounting structure for the stay 26. ing.

In the configuration as described above, when the bonnet 1 is closed, the operating rod 10 is rotated and the locking pin 10b is inserted into the upper locking groove 15, as shown in FIGS. 2 and 4.
If the locking pin 10b is kept in the inserted state, the locking pin 10b is pulled up and locked in the valley of the groove 15 by the spring 12, and is pressed against the back surface of the bonnet seat 8 in a state perpendicular to the notch groove 9. Since the bonnet 1 is positioned and held in this state, the bonnet 1 is surely prevented from accidentally opening due to inadvertent rotation of the operating rod 10 and the locking pin 19b even if subjected to vibrations or shocks from the aircraft body.

Furthermore, when the bonnet 1 is closed, the wedge-shaped engaging portion 4 provided integrally with the bonnet 1 is completely fitted into the notched groove 9 of the bonnet seat 8 as shown in FIG. Lateral vibration of the bonnet 1 is also prevented. Therefore, even if the bonnet 1 is driven while carrying a seedling box for replenishment on the auxiliary seedling stand 1a at the rear of the bonnet 1 during work, the bonnet 1 may shift from side to side, move up and down due to vibrations, etc., or make an unpleasant scraping sound. The bonnet 1 is always held in a stable state integrally with the fuselage.

Next, when opening the bonnet 1 when inspecting or servicing the inside of the bonnet 1 such as around the engine 7, pull the operating rod 10 downward against the spring 12 and rotate it 90 degrees to open the locking pin 1.
0b should be engaged with the lower locking groove 16. As a result, the locking pin 10b and the handle 10a are positioned to match the notch direction of the notch groove 9, so if the front part of the bonnet 1 is lifted as it is, the bonnet 1 can be easily opened around the fulcrum shaft 3. can.

By the way, in order to hold the bonnet 1 in the open position, as shown in FIG. 8, by raising the stay 26 and supporting the side edge of the bonnet 1 with the curved receiving part 26a at the tip, the bonnet 1 can be securely held in the open position. At the same time, the proximal bent portion 26b of the stay 26 comes into contact with the side surface of the fuel tank 24 and acts as a stopper, thereby preventing lateral vibration when the bonnet 1 is in the open position.

Furthermore, when closing the bonnet 1, after tilting the stay 26 inward, if the bonnet 1 is closed in the state in which it was opened, the handle 10a and the locking pin 10 can be closed.
b passes through the notched groove 9 and the engaging part 4 also fits into the notched groove 9, so if the operating rod 10 is turned 90 degrees while the lower surface of the bonnet 1 is in contact with the catch 8, the locking pin 1 can be removed.
0b is reliably positioned within the upper locking groove 15.

In addition, when the bonnet 1 is in the closed position, depending on the weight of the auxiliary seedlings placed on the auxiliary seedling platform 1a,
When a relatively large load is applied to the bonnet 1 from above, the load is transferred to the fuel tank 24.
This is convenient because it can be received even on the top surface of the body.

By the way, when the stay 26 is folded down, the tip side of the stay 26 is held by the clamp 29. As a result, the stay 26 is reliably housed and held in the bonnet 1 along the outer circumference of the fuel tank 24 in a stable state, so that the stay 26 does not get in the way of opening and closing the bonnet 1, and the stay 26 does not get stuck due to vibrations of the aircraft during work. 26 will not jump and hit other parts or devices.

As described above, in the present invention, the bonnet covering the engine, fuel tank, hydraulic mechanism for raising and lowering the wheels, etc. is pivoted to the fuselage using the rear part as a fulcrum so that it can be opened and closed freely, and the fuel tank is provided with a stay for maintaining the bonnet in an open position. It is installed so that it can be raised and lowered freely, and when the stay is erected, the stay holds the bonnet in an open position, and when it is lowered, the stay is housed and held along the fuel tank, so the existing fuel tank can be used as a mounting member for the stay. Not only can it be used effectively, but the stay can easily be supported when the bonnet is in the open position, making it convenient for engine inspections, etc., and when the bonnet is in the closed position, the stay can be stored well along the fuel tank, so the stay does not get in the way. Never.

[Brief explanation of the drawing]

Figure 1 is an overall side view of a rice transplanter equipped with the present invention, Figure 2 is a vertical side view of the bonnet engagement part,
Fig. 3 is a partially cutaway explanatory diagram showing the relationship between the bonnet catch and the operating rod, and Fig. 4 is the A in Fig. 2.
-A sectional view; Figure 5 is a partially cutaway side view showing the arrangement of the engine and fuel tank in the bonnet;
FIG. 6 is a plan view thereof, FIG. 7 is a plan view showing the state in which the stay is attached, and FIG. 8 is an explanatory view of the action of the stay. In the figure, 1 is the bonnet, 7 is the engine, 20 is the hydraulic cylinder of the hydraulic mechanism for raising and lowering the wheels, 24 is the fuel tank, 26 is the stay, and 29 is the clamp.

Claims (1)

[Scope of utility model registration request] A bonnet that covers the engine, fuel tank, hydraulic mechanism for raising and lowering the wheels, etc. is pivoted to the aircraft body using the rear as a fulcrum, and a stay for holding the bonnet in an open position is attached to the fuel tank so that it can be raised and lowered. A bonnet support device for a walking type mobile agricultural machine, characterized in that the stay holds the bonnet in an open position when the stay is erected, and the stay is housed and held along a fuel tank when the stay is lowered.