JP2011143864A - Gas engine type management machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas engine type management machine having a cover for covering a cylinder case for prevention of intrusion of dust. <P>SOLUTION: The cylinder case 21 for supporting a gas cylinder in a state of being placed in the horizontal direction is arranged above a front part of a gas engine, and this cylinder case 21 is covered with a hood 30 over a front upper part from the rear side. An undercover 31 is installed under the hood 30. The undercover 31 is constituted of a front part 31a for covering a front lower part of the cylinder case 21 and an under part 31b for covering a bottom part of the cylinder case 21. Even if the dust flies up from the lower side of the cylinder case 21, since the bottom part of the cylinder case 21 is covered with the under part 31b of the undercover 31 extended between the gas engine and the cylinder case 21, the fly-up dust cannot intrude into the cylinder case. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gas engine type management machine equipped with a gas engine, and more particularly, to a cover configuration thereof.

  2. Description of the Related Art Conventionally, in a gas engine type management machine 1 equipped with a gas engine 6, a gas cylinder holding part 12 for holding a gas cylinder 8 is attached laterally along the body width direction above the front part of the gas engine 6, and the gas cylinder holding part A hood (cover body) 30 that covers 12 is devised.

JP 2009-255752 A

  However, even if the gas engine type management machine of the above-mentioned patent document 1 covers the front upper part of gas cylinder holding part 12 with bonnet 30, it does not have the cover which covers the lower part, and it scatters from the lower side at the time of work. There has been a problem that mud, soaring dust, sand, and the like may enter the gas cylinder holding portion 12 from a hole or the like drilled in the cylinder case.

  Accordingly, an object of the present invention is to provide a gas engine type management machine that solves the above problems by covering the front upper part of the cylinder case with a bonnet and covering the lower front part and the bottom part of the cylinder case with an under cover.

The present invention includes a gas engine (9) that burns and drives a fuel gas in a gas cylinder (B), and a front upper portion of the gas engine (9), along the width direction of the gas engine (9). In the gas engine type management machine (1), comprising a cylinder case (21) for supporting the gas cylinder (B) in a state of being placed in a lateral direction.
A bonnet (30) covering the cylinder case (B) from the rear side to the front upper part;
A front part (31a) connected to a lower edge (30d) of the bonnet (30) and covering a front lower part of the cylinder case (B), and the cylinder case (B) and the gas engine from the front part (31a) (9) and an under cover (31) having an under part (31b) that covers the bottom of the cylinder case (B).
It is characterized by that.

  In addition, although the code | symbol etc. in a parenthesis is for contrast with drawing, it does not have any influence on a claim by this.

  According to the first aspect of the present invention, dust and mud can be prevented from entering the cylinder case by covering the cylinder base supporting the gas cylinder with the bonnet and the under cover. In particular, by extending the under cover between the cylinder case and the gas engine to cover the bottom of the cylinder case, it is possible to effectively prevent sand and mud that soar from below from entering the cylinder case. Can do.

The side view of the gas engine type management machine which concerns on embodiment of this invention. The top view of the gas engine type management machine which concerns on embodiment of this invention. The top view which shows the state which removed the cover member of the gas engine type management machine which concerns on embodiment of this invention. The right view which shows the state which removed the cover member of the gas engine type management machine which concerns on embodiment of this invention. The principal part left sectional view of the gas engine type management machine which concerns on embodiment of this invention. The principal part front view of the gas engine type management machine which concerns on embodiment of this invention. The principal part top view of the gas engine type management machine which concerns on embodiment of this invention. The principal part left view of the gas engine type management machine which concerns on embodiment of this invention. The main part right side view of the gas engine type management machine which concerns on embodiment of this invention. The perspective view which shows the bonnet of the gas engine type management machine which concerns on embodiment of this invention. The perspective view which shows the side cover of the gas engine type management machine which concerns on embodiment of this invention. The perspective view which shows the undercover of the gas engine type management machine which concerns on embodiment of this invention. FIG. 13 is a rear view of FIG. 12.

  Hereinafter, a gas engine type management machine according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the direction is based on the worker in the working state.

[Outline of gas engine type management machine]
First, the overall configuration of the gas engine type management machine will be described. As shown in FIGS. 1 and 2, the gas engine type management machine 1 is disposed so as to be inclined in the vertical direction, and has a rotating shaft 3 a that supports a rotating body 3 such as a tilling claw 3 b so as to be rotatable. A mission case 5 that is pivotally supported, a bifurcated handle 6 that is fixed to the mission case 5 and extends upward toward the rear side (right side in the figure), and a machine frame 7 that is fixed to the mission case 5 And a gas engine 9 mounted on the vehicle. A worker holds the handle 6 and operates the machine body 2 from the transmission case 5 and the gas engine 9.

  Further, a tilling resistance rod 12 is attached to the rear side of the mission case 5, and the working posture of the airframe 2 is stabilized by submerging the tillage resistance rod 12 in the ground during the tilling work, and when not working. It is comprised so that it can be used as a stand holding a standing posture.

  As shown in FIG. 2, the handle 6 includes gripping portions 6a and 6b at both left and right ends. A main clutch lever 11 for operating a main clutch, which will be described later, is disposed in front of the grip portion 4b on the left side of the machine body. When the operator grips the grip portion 6a, the main clutch lever 11 is operated. The main clutch is engaged. Further, a throttle lever 10 is disposed in front of the right grip 6b, and the operator can operate the rotation of the gas engine 9 via the throttle wire 10a by operating the throttle lever 10. It is configured as follows.

  On the other hand, the gas engine 9 (see FIG. 1) includes a belt transmission mechanism (not shown) in the belt cover 13, and the rotational transmission force of the engine output shaft is input to the transmission case 5 by the belt transmission mechanism. Transmitted to the shaft. The belt transmission mechanism is provided with a belt tension clutch (not shown) for turning on and off the transmission of the rotational driving force of the gas engine 9, and the gas engine is operated by operating the main clutch lever 11 disposed on the handle 6 described above. It is comprised so that transmission of 9 rotational driving force can be turned on and off.

  Next, the fuel gas supply structure to the gas engine 9 will be described with reference to FIGS. The gas engine 9 is configured to be able to burn and drive propane gas (fuel gas) supplied from a cassette type gas cylinder B (see FIG. 3) that is detachably supported by the cylinder mounting portion 20. The cylinder mounting portion 20 is configured to mount and mount the gas cylinder B in the lateral direction along the width direction (the left-right direction of the machine body) of the gas engine 9 above the front portion of the gas engine 9.

  Specifically, the cylinder mounting portion 20 is configured by a cylinder case 21 that accommodates the gas cylinder B in a horizontal position along the left-right direction of the machine body, and a connection portion 22 that is connected to the gas cylinder B at the right end of the cylinder case 21. The connecting portion 22 is connected to a fuel pipe 25 for supplying the propane gas of the gas cylinder B to the gas engine 9 via a joint nut 24, and the supply of the propane gas to the fuel pipe 25 is turned on and off. A fuel cock 23 is provided.

  Further, as shown in FIGS. 3 and 4, a recoil starter 16 is provided on the right side (one side of the gas engine type management machine) where the connecting portion 22 (fuel cock 23) is disposed. In addition, a throttle wire 10 a that transmits the operation of the throttle lever 10 to a governor (not shown) of the gas engine 9 is disposed through the lower side of the fuel pipe 25, and below the connecting portion 22. A mounting portion on the other end side (the side opposite to the throttle lever) of the throttle wire 10a is provided.

  As shown in FIG. 5, the cylinder case 21 includes a storage case 21a for storing the gas cylinder B, and a substantially U-shaped support member 21b to which the storage case 21a is attached. The member 21 b has a plurality of support legs 21 c that protrude downward and are fixed to the crankcase 9 a of the gas engine 9. The cylinder case 21 is supported by the support member 21 b, so that the cylinder mounting portion 20 is fixedly supported by the gas engine 9.

  Further, a muffler 15 that discharges exhaust gas discharged from the gas engine 9 to the outside is provided on the rear side of the cylinder mounting portion 20. 15b.

[Cover configuration of gas engine type management machine]
Next, the cover configuration of the gas engine type management machine 1 will be described. As shown in FIGS. 6 to 9, the gas engine type management machine 1 includes a bonnet 30 that covers the bomb case 21 from the rear side to the front upper part, a lower edge portion 30d of the bonnet 30 and an upper edge portion 31U. An under cover 31 that covers the lower side of the cylinder case 21 and a side cover that integrally covers the fuel pipe 25, the throttle wire 10a, and the connecting portion 22 (fuel cock 23) of the cylinder mounting portion 20 from the right side of the fuselage. Cover member) 32.

  As shown in FIGS. 7 and 10, the bonnet 30 covers the cylinder case 21 in substantially the entire width, and the front side covering the cylinder case 21 is smoothly curved along the cylinder case 21. In addition, the rear end portion extends to above the muffler 15 so that the operator does not touch the muffler 15 and the groove-shaped opening is provided so that the ambient temperature in the cover becomes higher than necessary. Prevents the rise.

  On the other hand, the under cover 31 that covers the cylinder case 21 integrally with the bonnet 30 includes a front part 31a that covers the front lower part of the cylinder case 21 and the front part 31a, as shown in FIGS. The undercase 31b extends between the bomb case 21 and the gas engine 9 and covers the bottom of the bomb case 21. The front portion 31a is connected to the bonnet 30, and the under portion 31b By entering between the gas engine 9 and the cylinder case 21, mud soil that scatters during work, and dust and sand that rises from the ground are prevented from entering the cylinder case 21.

  As shown in FIGS. 6, 7, 9, and 11, the side cover 32 is a box-shaped cover that is open on the mounting surface side, and the side edge on the mounting surface side is the bonnet 30 and the underside. It is configured to connect to the side edge of the cover 31. Further, a portion covering the connection portion 22 of the side cover 32 is provided with a notch 32b for exposing the fuel cock 23, and a protrusion 32a protruding in an arc shape adjacent to the notch 32b. The notch 32b is provided with a minimum size for exposing the fuel cock 23, and the strength of the side cover 32 is improved.

  The side cover 32 extends from the cover portion covering the connecting portion 22 downward and rearward to cover the fuel pipe 25 and the throttle wire 10a. The fuel pipe 25, the throttle wire It prevents the stepping stones and mud from hitting 10a. In addition, by covering the fuel pipe 25, heat from the engine 9, the muffler 15 and the like is maintained, and the ambient temperature around the fuel pipe 25 is appropriately raised. Cooling prevents the fuel vaporization efficiency from decreasing.

Further, the side cover 32 is provided with an opening 32c on the rear side of the notch 32b for exposing the fuel cock 23 for checking for gas leakage from the joint nut 24. notch 32d for connection to the bolt S ₄ for the high idle adjustment 9 are formed (see FIGS. 9 and 11). On the front surface of the side cover 32, the notch 32e for connection to the bolt S ₅ for low idle adjustment of the engine 9 is formed (see FIGS. 6 and 11).

  Next, the mounting structure of these cover members 30, 31, 32 will be described. As shown in FIGS. 5, 6, and 7, the front end portion of the support member 21b of the cylinder case 21 is bent to form a front flange 21d, and the front flange 40d is provided with a front bracket 40. It is attached with bolts through a pair of attachment holes 40a, 40a.

  The front bracket 40 also serves as a bumper inside the bonnet 30, and has a pair of bonnet mounting portions 40 c and 40 c and an under cover mounting portion 40 b on the lower end side of the front bracket 40 with different positions in the left-right direction of the body. 40b (see FIG. 6). Further, the mounting holes 40a, 40a formed on the upper surface of the front bracket 40 have a long hole shape, and the front bracket 40 is configured to be position-adjustable forward and backward by the length of the long hole.

On the other hand, the support member 21b is bent at the rear end portion thereof similarly to the front flange 21d to form a rear flange 21e, and a rear bracket 41 fixedly supported on the crankcase 9a of the engine 9 is provided on the rear flange 21e. These are attached with bolts through a pair of attachment holes 41b and 41b. The rear bracket 41 has a plate-like bent portion (projecting portion) 41a between the peak portions 41c and 41c in which the pair of mounting holes are formed, and the bent portion 41a is a concave portion 21e of the rear flange 21e. It is configured so that it can be easily positioned by abutting on ₁ .

The bonnet 30 includes a bonnet mounting portion 40c, 40c of the front bracket 40 to which a pair of ear portions 30a, 30 provided at a front end thereof is fixed, and left and right mountings formed on the rear bracket 41 toward the side of the body. The bolts S ₁ and S ₂ are fixed to the four mounting portions of the portions 41d and 41d.

Further, the under cover mounting portion 40b of the front bracket 40, the 40b, although the under cover 31 by a bolt _S 6, _{S 6} are mounted, the front bracket 40, these under-cover mounting portion 40b, and 40b, the bonnet mounting Since the portions 40c and 40c are formed at different positions, the operator can place the bonnet 30 on the ear portions 30a and 30a attached to the bonnet attachment portions 40c and 40c via the boss portions 31c and 31c. Thus, the under cover 31 can be easily attached with the bolts S ₆ and S ₆ .

As shown in FIG. 9, the side cover 32 is attached to the cylinder case 21 by a pair of attachment screws S ₃ and S ₃ .

As described above, the cylinder case 21 is integrally covered with the bonnet 30, the under cover 31 and the side cover 32, so that the holes h ₁ , h ₁ , h ₂ , h ₂ (see FIG. 6), it is possible to effectively prevent dust and mud from entering the cylinder case, and to protect the periphery of the cylinder case 21 during rolling.

  Further, the periphery of the connecting portion is integrally covered with the side cover 32, and a protrusion 32a is formed adjacent to the notch 32b for exposing the fuel cock 23, so that the size of the notch 32b is minimized. In combination, dust and the like can be prevented from entering the connecting portion 22 to which the nozzle of the gas cylinder B is connected.

  Furthermore, the bonnet 30 and the under cover 31 can be easily attached and detached with one screwdriver by forming the bonnet mounting portions 40c and 40c and the under cover mounting portions 40b and 40b on the front bracket 40 by shifting their positions. Can do.

Further, since the mounting holes 40a, 40a of the front bracket 40 are elongated, the clearance adjustment with the engine side is facilitated, and a bent portion 41a is formed in the rear bracket 41, and the bent portion 41a is used as a support member. by the positionable configured in the recess 21e ₁ of 21b abuts, with improved assembling property.

  In the present embodiment, the tilling claw is directly attached to the rotating shaft 3a, but the wheel is attached to the rotating shaft 3a and the tilling claw 3b is provided on the front side of the wheel. Also good.

  Further, instead of the side cover 32, a side portion of the bonnet 30 may be extended so as to cover the connection portion 22 including the fuel pipe 25, the throttle wire 10 a and the fuel cock 23.

  Further, the gas engine 9 may be electrically controlled by a throttle-by-wire system, and the throttle wire 10a may be an electrical wiring that transmits the operation of the throttle lever 10 to the microcomputer.

DESCRIPTION OF SYMBOLS 1 Gas engine type management machine 9 Gas engine 21 Cylinder case 30 Bonnet 30d Lower edge 31 Under cover 31a Front part 31b Under part B Gas cylinder

Claims (1)

A gas engine that burns and drives fuel gas in a gas cylinder, and a cylinder case that is disposed above the front portion of the gas engine and supports the gas cylinder placed in a lateral direction along the width direction of the gas engine In a gas engine type management machine equipped with
A bonnet covering the cylinder case from the rear side to the front upper part;
A front portion connected to a lower edge of the bonnet and covering a front lower portion of the cylinder case; and an underside extending from the front portion toward the space between the cylinder case and the gas engine and covering a bottom portion of the cylinder case An under cover having a portion,
This is a gas engine type management machine.

Images