JP3237947B2 - Management machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized walking-type management machine having an engine mounted on an airframe and used for agricultural work such as tilling, soiling, ridges and grooving.

[0002]

2. Description of the Related Art Conventionally, this kind of management machine has been
As disclosed in, for example, Japanese Patent No. 157721, an engine is mounted on a front part of a fuselage, and a shell-shaped bonnet is provided above the engine so as to cover a fuel tank portion arranged on the upper part of the engine.

[0003]

However, the above-mentioned shell-shaped bonnet has a relatively shallow structure that covers only the fuel tank at the top of the engine, and most of the engine is exposed to the outside. The starting equipment and muffler directly connected to the engine are also exposed to the outside, and there is a problem that the noise is loud.

In the present invention, a box-shaped hood covering an upper part and a side part around an engine is provided, an engine room is partitioned, and an engine is housed in the inside of the engine room. The purpose is to provide a machine.

[0005]

Therefore, in order to achieve the above object, first, an engine 2 is mounted on an airframe 1, and a starting device 3 is mounted on one side of the engine 2 and a muffler 4 is mounted on the other side.
And the engine 2 and the starting device 3
And a bonnet 5 for covering the top and sides of the muffler 4, and a starting equipment room 3 on both sides of the engine 2.
0 and muffler chambers 40 are disposed on both sides to provide partition walls 61 and 62 for partitioning the engine chamber 20.

Second, the hood 5 for the engine 2
In order to easily partition the engine room 20 while facilitating the attachment of the partition, the first means may be used to separate the partition walls 61 and 61 from each other.
62 are provided integrally on both sides of the engine 2, and ribs 51, 52 overlapping the side surfaces of the bulkheads 61, 62 near the outer peripheral portion are provided on the inner surface of the bonnet 5 so as to project inward.

[0007]

According to the first means, the engine 2 is disposed inside the hood 5 and, in particular, the partition walls 61, 62
Since the starting device room 30 and the muffler room 40 are arranged on both sides and disposed in the engine room 20 interposed therebetween, the sound emitted from the engine 2 can be effectively reduced from leaking to the outside. Furthermore, since the starting device 3 and the muffler 4 are also provided inside the hood 5, the sound emitted from the starting device 3 and the muffler 4 can be reduced from leaking to the outside. At the same time, since the upper portion and side portions of the engine 2, the starting device 3, and the muffler 4 are covered with the bonnet 5, it is possible to prevent a person from touching the high-temperature portion with hands, and it is difficult to suck dust or the like into the inside, and further, from the outside. This also has a secondary effect of preventing the intrusion of water and oil.

Since the partition walls 61 and 62 are provided integrally with the engine 2 by the second means, the bonnet 5 can be easily attached to the engine 2 side.
Since the rib 62 and the ribs 51 and 52 projecting from the inner surface of the bonnet 5 overlap, the inside of the engine room 20 can be partitioned well.

[0009]

FIG. 3 is a perspective view of a control unit having an engine 2 mounted on a front part of an airframe 1 and a handle 11 extending rearward and upward through a handle frame 10 at a rear part. Through the transmission mechanism to be installed,
The engine 2 is linked to the running wheels 23 and the tillage rotary 24. Reference numeral 12 denotes an operation lever.

As shown in FIGS. 4 and 5, the engine 2 has a lower base 2a mounted on a frame 1a, which is a U-shaped front view and has a substantially triangular shape in a side view, constituting a body 1, a support cylinder 71 and a cylindrical shape. It is elastically supported via a total of four vibration isolating rubbers 7 having an elastic body 72 and a mounting bolt 73. As shown in FIG. 6, one side of the engine 2 has an engine cooling fan 201 and a flywheel magneto 20 inside.
A starting device 3 of a cell specification having a wind guide cover 31, a cell motor 32, and a battery 33 covering the cell 2 is provided.
In FIG. 6, 81 is a fuel tank, 81a is a fuel tank cover, 82 is a fuel supply pump, 83 is a carburetor, and 84 is an air cleaner. On the other hand, on the other side of the engine 2, FIG.
The muffler 4 connected to the exhaust pipe 90 of the engine 2 is provided as shown in FIG.

As shown in FIGS. 1 and 2, a rounded box-shaped hood 5 covering the top and sides of the engine 2, the starting device 3 and the muffler 4 is formed. It is detachably mounted on the body 1 via a mounting frame 1b fixed to the front of the body 1 and a partition and mounting frame 1c standing upright behind the engine 2. On both sides of the engine 2, a starting device room 30 for disposing the starting device 3 and a muffler room 40 for disposing the muffler 4 are disposed on both sides to partition the engine room 20 inside the hood 5. , 62 are provided. The partition walls 61 and 62 are integrally fixed to both sides of the engine 2, and the inner surface of the bonnet 5 has ribs 51, of a predetermined height which overlap the side surfaces of the partition walls 61 and 62 near the outer peripheral portion. 52 protrudes inward.

With the above configuration, the engine 2 is disposed inside the bonnet 5 and, in particular, the partition walls 61 and 62
Since the starting device room 30 and the muffler room 40 are arranged on both sides and disposed in the engine room 20 interposed therebetween, the sound emitted from the engine 2 can be effectively reduced from leaking to the outside. Since the starting device 3 and the muffler 4 are also provided inside the hood 5, the sound emitted from the starting device 3 and the muffler 4 can be prevented from leaking to the outside, and noise can be reduced. At the same time, the upper and side parts of the engine 2, the starting device 3 and the muffler 4 are
It is possible to prevent human hands from touching the high temperature part, to enhance safety, to prevent dust and the like from being sucked, to increase the life of the engine 2, and to prevent water and oil from adhering to the outside.
Post-processing of the components in the bonnet 5 can be simplified, and subsequent processing costs can be reduced. In addition, since the partition walls 61 and 62 are provided integrally with the engine 2, the engine 2 of the hood 5
The inner side of the engine compartment 20 can be satisfactorily partitioned because the partition walls 61 and 62 and the ribs 51 and 52 projecting from the inner surface of the bonnet 5 overlap in the mounted state. .

Further, in this embodiment, as shown in FIG. 1, a sound absorbing material such as a urethane sponge having a sound deadening property is provided on the inner surface of the bonnet 5 and the surface of the partition wall 61 in contact with the starting equipment room 30 and the engine room 20. 5a, and a sound absorbing and heat insulating material 5b such as glass wool having sound deadening and heat insulating properties is stuck on the inner surface of the bonnet 5 and the surface of the partition wall 62 in contact with the muffler chamber 40 where the temperature is the highest. Further noise reduction is achieved by the sound absorbing material 5a and the sound absorbing and heat insulating material 5b. In this case, the sound absorbing material 5a and the sound absorbing and heat insulating material 5b are combined with the partition 61,
It also functions as a cushioning material that prevents the outer peripheral portion of 62 from interfering with the inner surface of bonnet 5 and prevents the vibration of engine 2 from being directly transmitted to bonnet 5. In particular, when the sound absorbing material 5a or the like is not attached, it is preferable that the partition walls 61 and 62 be formed small so that a predetermined gap is provided between the outer peripheral portions of the partition walls 61 and 62 and the inner surface of the bonnet 5. preferable.

In addition, in this embodiment, as shown in FIG. 7, the tail pipe 9 of the muffler 4 extends below the fuselage 1 inside the hood 5 and further extends the tail pipe 9. The part 91 is provided with a winding part 92 that is wound around the lower part of the fuselage 1 in a forward and backward direction, and an outlet 92a of the winding part 92 is opened in a lower part of the fuselage 1 to lengthen the path of the exhaust gas. As a result, exhaust noise is also reduced, and noise is further reduced.

In this embodiment, as shown by the white arrows in FIGS. 1, 6 and 7, outside air is taken in from below the starting equipment chamber 30, and the air guide cover 31 of the starting equipment 3 is taken.
From the cylinder 2b of the engine 2 through an air inlet 61a opening to the partition wall 61 and the engine cooling fan 201, and around the opening 2c, the engine room 20, and the insertion portion of the exhaust pipe 90 in the partition wall 62. The muffler chamber 40 is opened to the outside from the lower side through an air discharge port 62a that opens to the outside. By sequentially flowing air toward the chambers on the higher temperature side, the heat balance inside the bonnet 5 is maintained, and each part can be efficiently cooled while preventing the backflow and stagnation of the wind.

By the way, in the above embodiment, the bonnet 5 is formed as a single member or a plurality of members are formed integrally to form an integral structure as a whole. The lower part 5A and the upper part 5B of the bonnet 5 may have a detachable structure. In this case, at the time of maintenance or the like, the inner part can be opened by removing only the upper part 5B, thereby improving the maintainability. Is also obtained.

[0017]

According to the first aspect of the present invention, the engine 2 is divided inside the bonnet 5, especially by the partition walls 61 and 62, and the starting equipment room 30 and the muffler room 40 are arranged on both sides, and the engine 2 is interposed therebetween. Is disposed in the engine room 20, so that sound emitted from the engine 2 can be effectively prevented from leaking to the outside, and the starting device 3 and the muffler 4 are also disposed inside the hood 5. The sound emitted from the starting device 3 and the muffler 4 can be prevented from leaking to the outside, and the noise can be reduced as a whole. Also, at the same time,
Since the upper portion and side portions of the engine 2, the starting device 3 and the muffler 4 are covered with the bonnet 5, it is possible to prevent human hands from touching the high-temperature portion, to enhance safety, and to prevent dust and the like from being sucked into the inside. The life of the engine 2 can be prolonged, water and oil hardly adhere to the outside, the post-processing of the components in the bonnet 5 can be simplified, and the processing cost can be reduced.

According to the second aspect of the present invention, the partition walls 61 and 62 and the ribs 51 and 52 projecting from the inner surface of the bonnet 5 overlap while the bonnet 5 can be easily attached. Can be partitioned well.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a management machine according to the present invention with a bonnet opened.

FIG. 2 is a plan view of a main part of the management machine.

FIG. 3 is a side view showing the overall structure of the management machine.

FIG. 4 is a front view of a main part of the management machine.

FIG. 5 is an enlarged sectional view taken along line A, A in FIG. 4;

FIG. 6 is a right side view of a main part of the management machine.

FIG. 7 is a left side view of a main part of the management machine.

[Explanation of symbols]

1; body; 2; engine; 3; starting device; 4; muffler; 5; bonnet, 20; engine room, 30; starting device room, 40; muffler room, 51, 52;
62; partition

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-96069 (JP, A) JP-A-52-43608 (JP, A) Fully open 58-157721 (JP, U) Really open 2883 (JP, U) Fully open sho 61-176022 (JP, U) Fully open sho 59-117578 (JP, U) Fully open sho 56-119777 (JP, U) (58) Field surveyed (Int. ⁷ , DB name) B62D 51/06 A61B 33/08 B60K 13/04

Claims (2)

(57) [Claims] An engine (2) is mounted on an airframe (1), a starting device (3) is arranged on one side of the engine (2), and a muffler (4) is arranged on the other side. (2) A bonnet (5) for covering the top and sides of the starting device (3) and the muffler (4) is provided, and a starting device room (30) and a muffler room ( A management machine characterized in that partition walls (61, 62) for partitioning the engine room (20) are provided by disposing the partition (40) on both sides. 2. The partition walls (61, 62) are integrally provided on both sides of the engine (2), and the inner surface of the bonnet (5) overlaps the side surface of the partition walls (61, 62) near the outer peripheral portion. The management machine according to claim 1, wherein the ribs (51, 52) are provided to project inward.