JP2006151072A - Walking type mobile agricultural machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein when feeding fuel in a fuel tank, the fuel erroneously drops from the filling opening, drops from the upper surface of the outside of the fuel tank along the flange part, and splashes onto a high-temperature muffler in a walking type mobile agricultural machine such as a walking type management machine equipped with the fuel tank above an engine mounted to the machine body. <P>SOLUTION: The shield members 25, 21d combining with a heat-shield means for the muffler 24 and a fuel drop prevention means for the muffler 24 during filling the fuel are extended to the flange part 21c of the fuel tank 21 at the side where the muffler 24 is provided. Even the fuel erroneously drops from the filling opening 21a when feeding the fuel into the fuel tank 21, the dropped fuel comes down from the fuel tank 21 along the shield members 25, 21d and drops without splashing onto the high-temperature muffler 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a walking-type mobile agricultural machine that performs a plowing operation and a weeding operation using a rotary plowing device or the like attached to the machine body.

2. Description of the Related Art Conventionally, walking-type mobile agricultural machines that perform plowing work or weeding work using a rotary tiller mounted on the airframe have a configuration in which a fuel tank is provided above the engine mounted on the airframe, and this fuel tank is attached. A mounting plate is interposed between the heat shield surface on which the fuel tank is placed and a partition surface in which the end portion of the heat shield surface is raised on the muffler installation side. Is known (for example, see Patent Document 1).
JP-A-8-1158 (second page, FIG. 3 to FIG. 4)

  However, as described above, the upper end portion of the partition surface of the mounting plate that is formed upright on the muffler installation side substantially overlaps with the flange portion that protrudes from the outer periphery of the intermediate portion of the fuel tank, so that fuel is supplied to the fuel tank. If the fuel is accidentally zeroed out at the time of fueling, there is a problem that the fuel dripping from the outer upper surface of the fuel tank along the flange is applied to the high-temperature muffler.

  The present invention has been made to solve the above-described problems, and is a walking-type mobile agricultural machine having a fuel tank at the top of an engine and a muffler disposed on the side or below the fuel tank. The fuel tank is characterized by extending a shielding member serving both as a heat shielding means for the muffler and a means for preventing fuel from dripping into the muffler during fuel supply.

  According to the present invention, the fuel tank provided in the upper part of the engine is provided with a shielding member that serves as both a heat shielding means for the muffler and a fuel dripping preventing means for the muffler when fueling, so that fuel is supplied to the fuel tank. Even if the fuel is accidentally zeroed from the fuel filler port when refueling, the fuel that has fallen from the fuel tank falls through the shielding member and does not fall on the high-temperature muffler, so that a safe fuel refueling operation can be performed.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a walking-type management machine 10 that is a walking-type mobile farm machine to which the present invention is applied. This walking-type management machine 10 has an engine 12 mounted on the front side of a body frame 11 and a rear side thereof. A transmission case (transmission case) 13, handles 15 L and 15 R provided with left and right side clutch levers 14 L and 14 R, a main transmission lever 16, and the like are disposed, and a pair of left and right axles 17 L are disposed below the transmission case 13. , 17R, and traveling wheels 18, 18 are attached.

  As shown in FIGS. 2 and 3, a resin fuel tank 21 is attached to the upper portion of the engine 12 directly or via a support member (not shown).

  The fuel tank 21 has a fuel filler port 21a provided with a fuel filler cap 22 at the top, a fuel feed port 21b to a carburetor (not shown) is provided at the bottom, and the outer periphery of the upper and lower intermediate portions also serves as a mounting seat. The flange portion 21c is integrally formed so as to project lightly and inexpensively.

Further, at the upper part of the left and right sides of the engine 12 and to the side of the fuel tank 21, the engine 12
A muffler 24 for exhausting exhaust gas discharged from the exhaust pipe 23 through an exhaust pipe 23 is provided.

  As described above, the flange 21c of the fuel tank 21 on the side where the muffler 24 is provided serves as a shielding member that serves as both a heat shielding means for the muffler 24 and a means for preventing fuel dripping from the muffler 24 when fuel is supplied. The shielding plate 25 is extended upward of the muffler 24. The base end portion of the shielding plate 25 is attached or screwed in a state of being overlapped with the flange portion 21c of the fuel tank 21, but is heat resistant so that fuel leakage does not occur from the joint surface between the two portions 21c and 25. It is preferable to insert an appropriate sealing material having

  More specifically, as shown in FIG. 2, the shielding plate 25 is provided with a groove portion 25a in which the vicinity of the flange portion 21c of the fuel tank 21 is valley-folded in the longitudinal direction of the machine body. Even if the fuel is accidentally zeroed from the fuel filler port 21a when the fuel is supplied to the tank 21, the spilled fuel drops from the fuel tank 21 through the shielding plate 25 and does not fall on the high-temperature muffler 24, so it is safe. Fuel refueling work.

Further, as shown in FIG. 4, by extending the flange portion 21c of the fuel tank 21 on the side where the muffler 24 is provided to the muffler 24 side and integrally forming the rising portion 21d,
You may comprise the shielding member which serves as the heat insulation means with respect to the said muffler 24, and the fuel dripping prevention means to the muffler 24 at the time of fuel supply.

  By the way, in the walking type mobile agricultural machines such as the walking type management machine 10 described above, a deadman clutch mechanism is conventionally provided to ensure safety during traveling and work. In FIG. 5, the left and right handles 15L, 15R are provided with deadman clutch levers 31L, 31R, respectively, and the linking member 32 is operated so that both levers 31L, 31R can be operated in conjunction with each other. By installing the engine stop switch 33, the throttle lever 34, the reverse operation lever 35 and the like together on the linking member 32, the operability of these operation tools 33, 34, 35 is improved. ing.

  FIG. 6 shows that the main clutch lever 38 for connecting / disconnecting the main clutch of the traveling transmission system of the walking type management machine 10 is provided on the left handle 15L, which is operated by the grip operation of the main clutch lever 38. An engine start switch 39 that allows the engine 12 to start by contacting the main clutch lever 38 in a state in which the engine is turned off is provided at the lower part of the grip of the handle 15L, thereby improving workability when starting the engine 12. It is a thing.

  More specifically, since the engine start switch 39 is held by being pushed in contact with the main clutch lever 38, the grip end of the handle 15L is released to release the self-holding of the engine start switch 39. A switch 41 is provided. Incidentally, reference numeral 42 in the drawing denotes a lock lever 42 that fixes the main clutch lever 38 in a gripping state.

The side view of a walk type management machine. The A arrow directional view in FIG. B arrow view in FIG. The A arrow directional view in FIG. 1 which shows another Example of a shielding member. The handle part top view which shows the structure of a deadman clutch lever. The handle part perspective view which shows the structure of the main clutch lever.

Explanation of symbols

12 Engine 21 Fuel tank 24 Muffler 25 Shielding member

Claims (1)

  In the walking-type mobile agricultural machine (10) comprising a fuel tank (21) at the upper part of the engine (12) and a muffler (24) disposed on the side or lower side of the fuel tank (21), the fuel tank (21) A walking type movement characterized in that a shielding member (25, 21d) serving as a heat shielding means for the muffler (24) and a means for preventing fuel dripping to the muffler (24) during fuel supply is extended. Agricultural machinery.

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