JP3186515B2 - Protective cover for muffler in mobile farm equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective cover for a muffler that discharges exhaust gas from an engine mounted on a mobile agricultural machine to the outside of the machine. The present invention relates to a protective cover for a muffler capable of efficiently releasing heat to the outside of a machine and improving a cooling effect.

[0002]

2. Description of the Related Art Conventionally, in a mobile agricultural machine such as a rice transplanter or a tractor, it is necessary to mount various multifunctional devices on a small vehicle body. The main devices such as the system operation device and the driving operation unit including the seat are arranged naturally, so the muffler, which is another secondary device, is installed inside the hood cover that houses the above devices. It is generally known that a muffler installation space is provided near the engine where the exhaust path can be kept to a minimum while utilizing a narrow space portion of the muffler.

However, in the above-described configuration, a configuration in which the muffler is covered with a cylindrical protective cover is required in order to avoid the danger of the worker inadvertently touching the high-temperature muffler and to obtain a required cooling effect. Therefore, when assembling the fuselage or performing inspection and maintenance of the muffler, the exhaust pipe or protective cover connected to the muffler must be installed and removed unless the muffler itself is disassembled and assembled. Cannot be carried out, and the work efficiency is extremely poor.

[0004] On the other hand, as described above, in a configuration in which traveling devices such as an engine, a transmission, and a battery are densely arranged in a narrow space in a hood cover, the temperature in the hood during traveling significantly increases. In particular, it has not been possible to expect a sufficient effect only by improving the individual heat radiation structures, especially for the engine and the muffler, which are high-temperature sources.

[0005]

SUMMARY OF THE INVENTION In view of the above situation, the present invention has been made in order to solve the conventional disadvantages, and an object of the present invention is to provide a protective cover for covering a muffler. It is divided into two parts by the upper and lower covers to form a protective cover structure that is easy to disassemble and assemble, while actively utilizing the rising action of high-temperature air to efficiently and efficiently combine engine drive heat and muffler exhaust heat. It is an object of the present invention to provide a protective cover for a muffler in a mobile agricultural machine that can be released to the outside and enhance a heat radiation effect in a hood cover.

[0006]

Means for Solving the Problems In order to solve the problems, a first technical means adopted by the present invention is to dispose the exhaust gas from the engine at a position near the engine mounted and fixed in a bonnet. In order to attach the muffler to be discharged to the muffler, an opening facing the upper part of the engine is provided between an upper cover covering the upper surface area of the muffler and a lower cover covering the lower surface area of the muffler.
Formed, the driving heat and muffler of the exhaust heat of the engine, characterized by being configured to direct guided upward through the opening, as the second technical means, was placed and fixed in the hood In order to attach a muffler for discharging exhaust gas from the engine to the outside of the machine at a position near the upper side of the engine, an upper cover for covering an upper surface area of the muffler follows a shape of a ventilation hole formed in the bonnet cover. An opening facing the upper part of the engine is formed between the lower cover and the upper cover, which has an opening and covers the lower surface area of the muffler, so that the driving heat of the engine and the exhaust heat of the muffler are formed. Is guided to the ventilation hole through an opening .

[0007]

Therefore, according to the present invention, the inspection of the muffler,
The protective cover can be easily disassembled and assembled for maintenance work, and work efficiency can be improved.
The driving heat of the engine and the exhaust heat of the muffler can be integrated and efficiently discharged to the outside of the machine, and the heat radiation effect in the hood cover can be enhanced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in detail with reference to one embodiment shown in the drawings. 1 and 2, reference numeral 1 denotes a traveling body of a riding rice transplanter exemplified as a mobile agricultural machine,
The traveling body 1 is provided with a hood cover 6 for covering an engine 5 (not shown), a battery (not shown), and other peripheral devices at a front portion of a body frame 4 having a front wheel 2 and a rear wheel 3, and a handlebar behind the body. 7a, an operation panel 7b and a seat 7c, and a driving operation unit 7 is provided. On both left and right sides of the bonnet cover 6, ventilation holes 9 having mesh fences 8, 8 are provided.
Numerals 9 are opened, and ventilation of the air inside and outside the bonnet cover 6 is performed through the ventilation holes 9, 9. Reference numeral 10 denotes a planting portion including a seedling mounting table 11, a float 12, a seedling planting rod 13, and the like. The planting portion 10 can be moved up and down on the tip of a link mechanism 14 provided at the rear of the traveling machine body 1. It is supported by.

As shown in FIGS. 3 to 5, in the hood cover 6, an engine 5 is mounted and fixed on the body frame 4 at a position in front of the operation panel portion 7b. And a muffler 16 wrapped by a protective cover 15 is provided.
A fuel tank 17 for supplying fuel to the engine 5 is provided in a space formed between the hood door 6a and the hood door 6a at a position above the holder portion 18a of the arm bracket 18 which is also used for mounting and fixing the operation panel 7b. The fuel tank 17 is horizontally fixed, and the fuel is injected from a supply port 19 provided on the upper surface of the fuel tank 17 with the hood door 6a opened.

As shown in FIG. 6, the fuel tank 17 is provided with a supply port 19 and a capacity indicator 22 on an upper surface 21 having inclined planes 20 and 20 formed in front and rear, respectively, and a fuel supply nozzle 23 is suspended. Installed tank body 17
“a” is formed by displacing the bottom surface 24 laterally by a rising inclined surface 24 a along the upper side surface of the protective cover 15. 25 is the tank body 17 from around the supply port 17.
The endless protruding body that encloses a required surface area A that reaches the side surface of a. The fuel that has flowed to the outer surface of the tank when fuel is injected into the supply port 17 is confined within the surface area A confined by the endless protruding body 25. ,
It is configured to guide and guide to a predetermined dropping position B of the tank body 17a.

On the other hand, as shown in FIGS. 7 to 9, the protective cover 15 is formed so as to be vertically splittable by an upper cover 15a covering the upper surface area of the muffler 16 and a lower cover 15b covering the lower surface area. , And is mounted above one side of the engine 5 via an assembly bracket 26.

That is, the upper cover 15a includes a roof portion 28 having an upper surface 27 along an inclined surface 24a provided on the bottom surface 24 of the fuel tank 17, and a hanging surface 29 provided along a lower edge of the upper surface 27. And an upper opening 28a along the opening shape of one of the ventilation holes 9 formed in the bonnet cover 6 is formed on the facing surface of the hanging surface 29, and the lower cover 15b is Flat bottom plate 30
A guide surface 31 inclined toward the engine 5 and a muffler 1
6 is formed integrally with a rising piece 33 provided at an edge near a tail pipe 32 connected downward to the discharge side, and the upper and lower covers 15a and 15b are vertically assembled. When attached, a lower opening 34 facing the upper part of the engine 5 is formed by the hanging surface 29 of the upper cover 15a and the guide surface 31 of the lower cover 15b, and the driving heat of the engine 5 and the exhaust heat of the muffler 16 are formed. , Through the lower opening 34 and the upper opening 28a, the ventilation holes 9 of the bonnet cover 6.
It is designed to guide you to Reference numeral 16a denotes an outer cylinder integrally connecting the tail pipe 32, and 16b denotes a muffler main body. The muffler 16 is formed by internally fixing the muffler main body 16b to the outer cylinder 16a.

Since the present invention is configured as described above, the driving heat generated by the engine 5 during the operation of the traveling body 1 is reduced by the lower opening 34 of the protective cover 15 and the lower cover 1.
The guide piece 5b is guided upward by the rising piece 33, is taken into the protective cover 15, and is guided along one of the ventilation holes 9 of the hood cover 6 through the upper opening 28a together with the exhaust heat of the muffler 16 itself. It will be released outside the aircraft.

Therefore, it is possible to prevent the driving heat of the engine 5 and the exhaust heat of the muffler 16 which are the main heat sources in the hood cover 6 from being diffused in the hood cover 6 and to prevent the ventilation action. The efficiency can be improved to reduce various troubles caused by the temperature rise, and the protective cover 15 can be easily disassembled and assembled, so that the work efficiency in inspection and maintenance can be improved.

[0015]

Effects of the Invention In brief the present invention it is in the vicinity of the mounting fixed engine in the bonnet, to attaching a muffler discharging exhaust gas from the engine to the outside, wrap the upper surface area of the muffler An opening facing the upper part of the engine between the upper cover to cover and the lower cover to cover the lower surface area of the muffler
A driving portion of the engine and an exhaust heat of the muffler are guided upward through the opening, and the portion is located near the upper side of the engine mounted and fixed in the hood. In order to attach a muffler that discharges exhaust gas from the engine to the outside of the machine, an upper cover that covers an upper surface area of the muffler is formed having an opening along a shape of a ventilation hole formed in a bonnet cover. An opening facing the upper part of the engine is formed between the lower cover covering the lower surface area of the muffler and the upper cover, and the driving heat of the engine and the exhaust heat of the muffler are transmitted through the opening. Because it is configured to guide the air to the ventilation holes, it has a protective cover structure that is easy to disassemble and assemble, while actively utilizing the rising action of high-temperature air to integrate the engine drive heat and the exhaust heat of the muffler. Efficiently outside the aircraft The efficiency of ventilation and ventilation can be improved to reduce various problems caused by temperature rise in the bonnet, and the protective cover can be easily disassembled and assembled. Can be improved, and a very useful novel effect can be achieved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter in which planting portions are connected.

FIG. 2 is an overall plan view of the riding rice transplanter excluding a planting portion.

FIG. 3 is an enlarged side view of a main part.

FIG. 4 is a left side sectional view of a main part of the same.

FIG. 5 is a perspective view of a main part showing a state where the fuel tank is mounted.

FIG. 6A is a plan view of a fuel tank. (B) is a front view same as the above.

FIG. 7 is an exploded perspective view showing a main part of the assembly of the muffler and the protective cover.

FIG. 8 is a front view of a main part showing attachment of a muffler in a protective cover.

FIG. 9 is an operation explanatory view of a main part showing an arrangement relationship between an engine, a muffler, and a protective cover.

[Explanation of symbols]

 Reference Signs List 5 engine 6 hood cover 9 ventilation hole 15 protective cover 15a upper cover 15b lower cover 16 muffler 28a upper opening 33 rising piece 34 lower opening

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F01P 1/06 F01P 5/06 504 A01C 11/02 311 B60K 13/04 F01N 7/14

Claims (2)

(57) [Claims] In the vicinity of 1. A mounting fixed engine in the bonnet, to attaching a muffler discharging exhaust gas from the engine to the outside, it overturn wrap the upper surface area of the muffler
Between the lower cover to Tsutsumikutsugae the bottom surface area of the cover and the muffler on that
An opening facing the upper part of the engine,
A protective cover for a muffler in a mobile agricultural machine , wherein the driving heat of the muffler and the exhaust heat of the muffler are guided upward through the opening . 2. An muffler for discharging exhaust gas from the engine to the outside of the machine is provided at a position near an upper portion of the engine mounted and fixed in a bonnet, wherein an upper cover for covering an upper surface area of the muffler is provided. An opening facing the upper part of the engine is formed between the lower cover covering the lower surface area of the muffler and the upper cover, having an opening along the shape of the ventilation hole formed in the bonnet cover. Te, claim 1 of the driving heat and muffler of the exhaust heat of the engine, characterized by being configured to direct guided into the vents through an opening
A muffler protective cover for the described mobile farm machine.