JPH10169891A - Protective frame type internal combustion engine working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect the upper section of a fuel tank suspended in the upper space in a protective frame and provide a protective frame type internal combustion engine working machine which facilitates work to mount the fuel tank and can be mounted with sufficient support strength. SOLUTION: An internal combustion engine and a working machine are arranged in the cross direction in the space formed in a protective frame, and a fuel tank 4 is arranged above them. The fuel tank 4, when viewed from the upper part, presents a nearly rectangular shape and is formed with a flange 5 in the peripheral direction of the outer peripheral side face, and a fuel cock 7 is provided on the engine side in he lower face, and a pair of tank supporting members 31 and 32 in the longitudinal direction are horizontally installed between the perpendicular frames of the protective frame, and a tank support rails forming a long horizontal plane in at least one of the tank support members. The fuel tank is nearly horizontally inserted from the engine arranging side of the right and left openings of the protective frame with the opposite side of the fuel cock 7 headed while being supported by the tank supporting rails 31 on one side and by the support member on the other side and is fixed so as to cover all of the upper space, and the upper part of the fuel tank 4 is covered by a safeguard frame installed over the protective frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine working machine surrounded by a protective frame.

[0002]

2. Description of the Related Art Such a protective frame type internal combustion engine working machine has a simple structure of a frame constituting a protective frame and is easy to handle, so that it is widely used for outdoor work and the like. In general, a large fuel tank is provided in the upper space of the internal combustion engine and the working machine in order to extend the continuous operation time and make it suitable for outdoor work.

FIGS. 9 and 10 show a conventional example of this type of a protective frame type internal combustion engine working machine (Japanese Utility Model Publication No. 7-24922).
Illustrated in FIG. FIG. 9 is a front view of the protection frame type internal combustion engine working machine 01, and FIG. 10 is a plan view thereof.

[0004] The protective frame 02 has a pipe frame formed in a rectangular ring shape.
Continuous, bent opposite long frame part in U-shape
Thus, a rectangular parallelepiped frame shape is formed. Ie protective frame
02 is a pair of left and right horizontal frames
Room 03 _F, 03_R, Same horizontal frame 03_F, 03_RLeft and right
Four vertical frames 04 whose ends are bent and extended upward_F,
04_F, 04_R, 04_R, Front and rear vertical frame 04_F, 04
_RA pair of left and right horizontal frames 05 connecting the upper ends of_L,
05_RConsists of

[0005] The internal combustion engine 010,
The work machine 011 is arranged on the left side, and the internal combustion engine 010 and the work machine 01
A fuel tank 012 is disposed in the space above the fuel tank 1. Front tank support member 06 is bridged to the front of the right and left vertical frame 04 _F, 04 _F between the left and right vertical frame 04 of the rear _R, 04 _R
, Support projections 07, 07 are protruded at predetermined opposing height positions, and both ends of the support projections 07, 07 are supported by the rear tank support member 08.

The fuel tank 012 has a rectangular shape in a top view, and has a flange 012a projecting from the outer peripheral side surface in the circumferential direction. As shown in FIG.
3 is attached, and the rear tank support member 08 is attached to the rear flange 012a via the vibration isolating rubber.
The front flange 012a is supported on the front tank support member 06 from the rear upper side via the vibration isolating rubber 013.
The left and right ends of the rear tank support member 08 attached to the 2a via the vibration isolating rubber are supported by the support projections 07 and 07 and fixed by bolts.

[0007]

In the protection frame type internal combustion engine working machine 01, although the mounting of the fuel tank 012 is simplified, the upper part of the fuel tank 012 is open to protect the fuel tank 012. In order to protect the fuel tank from packing logistics, transportation during work, or contact impact with other equipment at the work site, it is necessary to install a protection frame for protecting the upper part of the fuel tank. .

[0008] Therefore, the front and rear of the left and right horizontal frame 05 _L, 05 _R
If a protective frame is installed between the protective frames, it becomes extremely difficult to install the fuel tank 012 from above and behind the protective frame 02. Further, as the size of the fuel tank increases, the mounting becomes very difficult.

[0009] The present invention has been made in view of such a point,
Its purpose is to not only protect the upper part of the large fuel tank suspended over the entire upper space in the protective frame, but also to install the fuel tank easily and with sufficient support strength. The present invention provides a protective frame type internal combustion engine working machine as described above.

[0010]

In order to achieve the above object, the present invention provides an internal combustion engine and a working machine driven by the internal combustion engine in a substantially rectangular parallelepiped space formed in a protective frame. In a protective frame type internal combustion engine working machine in which a fuel tank is arranged above and below the internal combustion engine and the working machine, the fuel tank has a substantially rectangular shape in a top view and has a flange extending circumferentially on an outer circumferential side surface. And a fuel cock protrudes from the left and right side edges of the lower surface on the side of the internal combustion engine, and a pair of front and rear tank front and rear support members is provided between the vertical frames of the protective frame in the horizontal direction. A tank support rail having a long horizontal surface formed on at least one of the front and rear support members is provided. One of the front and rear flanges is provided on the tank support rail and the other is provided on the tank. While being supported by the rear support member or the tank support rail, the protective frame is inserted substantially horizontally from the left and right openings of the protective frame with the internal combustion engine disposed on the side opposite to the fuel cock so as to cover the entire upper space of the protective frame. A protective frame type internal combustion engine working machine is configured so as to be fixed at a predetermined position and to be covered with a protective frame extended over the protective frame above the fixedly supported fuel tank.

Since the upper part of the fuel tank arranged in the protective frame is covered with the protective frame, the upper part of the fuel tank is protected by the protective frame. The fuel tank is inserted substantially horizontally from the internal combustion engine side of the left and right openings of the protection frame while the front and rear flanges are supported by the tank support rail or the tank front and rear support members, and fixed at a predetermined position so as to cover the entire space above the protection frame. Therefore, the protection frame above the fuel tank does not hinder the mounting operation of the fuel tank, and the mounting operation can be easily performed.

Further, since the front and rear flanges are inserted into the protective frame while being supported by the tank support rail or the tank front and rear support member, if the flange is first supported by the tank support rail or the tank front and rear support member, the flange is pushed in thereafter. It can be inserted, and even if the fuel tank is large and heavy, the mounting work is reduced.

[0013] Since the fuel tank is inserted into the protective frame with the side opposite to the fuel cock at the top, the fuel cock protruding downward does not interfere with the internal combustion engine or the working machine. Since the position of the cock is near the internal combustion engine, the piping connection of the fuel system is extremely simplified.

According to a second aspect of the present invention, in the protection frame type internal combustion engine working machine according to the first aspect, a pair of left and right tank left and right support members is provided between the vertical frames of the protection frame in the front-rear horizontal direction. The left and right flanges of the fuel tank are supported by the tank left and right support members in a mounted state, and the tank left and right support members on the internal combustion engine side of the pair of left and right tank left and right support members are detachable. After the fuel tank is inserted into the space inside the protective frame, the left and right support members for the internal combustion engine-side tank are fixed between the vertical frames.

Since the front and rear flanges are supported by the front and rear flanges and the left and right flanges are also supported by the left and right support members, the fuel tank can secure a larger supporting weight and can sufficiently withstand impact during transportation and movement. It can be a support structure.

At the time of mounting the fuel tank, it is sufficient to remove the left and right support members of the tank on the internal combustion engine side and insert the fuel tank from the opening of the protective frame, and the mounting operation can be performed extremely easily without being obstructed by the protective frame.

According to a third aspect of the present invention, in the protective frame type internal combustion engine working machine according to the first aspect, the protective frame that covers the upper part of the fuel tank is formed by a plurality of protective frames that extend between the right and left upper ends of the protective frame. It is a rod-shaped member that is installed above the fuel tank.

The fuel tank can be protected by a simple structure that covers the upper part of the fuel tank with a plurality of rod-shaped members spanned between the left and right upper ends of the protective frame, and the strength of the protective frame itself can be improved. .

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The present embodiment is an example applied to a protective frame type internal combustion engine generator 1 in which a working machine is a generator.

FIG. 1 is an overall perspective view of the protective frame type internal combustion engine generator 1, and FIG. 2 is a perspective view showing a frame structure of the protective frame 20 and the like. In the protective frame 20, the internal combustion engine 2 is on the left side,
A generator 3 having a rotating shaft directly connected to an output shaft of the internal combustion engine 2 is disposed on the right side. A rectangular fuel tank 4 as viewed from above is suspended in a space above the internal combustion engine 2 and the generator 3.

The internal combustion engine 2 has a cylinder 2a inclined obliquely rearward and upward with respect to a horizontally disposed crankshaft, and a recoil starter 10 is provided at the left end. An air cleaner 11 is provided at a position behind the recoil starter 10, and an air intake system such as a carburetor and an intake pipe is provided between the air cleaner 11 and the cylinder 2a. Generator 3
An exhaust system device such as an exhaust pipe and a muffler is disposed behind.

The fuel tank 4 is a flat rectangular tank, and has a flange 5 projecting from the outer peripheral side in the circumferential direction. A fuel supply port is provided at a substantially central position on the upper surface, and a fuel cap 6 is screwed into the fuel tank. A fuel cock 7 protrudes downward from a position along the left edge of the lower surface, and a fuel hose 8 extends from the fuel cock 7 located on the left outside of the internal combustion engine 2 and is connected to the carburetor.

The protective frame 20 surrounding and supporting the above-mentioned devices
As shown in FIG. 2 to FIG. 5, a pipe frame is made continuous in a rectangular ring shape, and a long frame portion opposed thereto is bent in a U-shape to form a rectangular parallelepiped frame shape.

That is, the protective frame 20 is oriented horizontally in the left and right directions.
Pair of left and right horizontal frames 21 _F,twenty one_R, Same left and right water
Flat frame 21_F,twenty one_RThe left and right ends of the
4 vertical frames 22_F,twenty two_F,twenty two_R,twenty two_RFacing
Vertical frame 22_F,twenty two _RLeft and right connecting the top of
Front and rear horizontal frame 23_L,twenty three_RConsists of

A pair of left and right front and rear horizontal frames 23 _L ,
23 protective frame 24 _F, 24 were directed in the lateral horizontal direction between the _R
R is installed by welding the two front and rear ends. The front and rear of the protective frame 24 _F, 24 _R are left and right horizontal frames 21 _F of the front and rear pair of lower, 21 closely spaced from each other than _R, FIG. 1
As shown in (1), it is located above the fuel tank 4 and has a function of protecting the upper surface of the fuel tank 4 in addition to reinforcing the protective frame 20.

A pair of front and rear lower left and right horizontal frames 21_F,
twenty one_RBody support plate 25 between_L,twenty five _RIs installed on the left and right
The main body support plate 25_L,twenty five_RMount on
The internal combustion engine 2 and the generator 3 are supported via the member 26.
You. Front vertical frame 22_F,twenty two_FHas a predetermined height
Brackets 27 and 27 are protruded inward at
Operation with both ends bolted to both brackets 27, 27
The panel 30 is erected.

The operation panel 30 has a vertically long rectangular shape extending vertically in the left-right direction, and upper and lower sides 30a and 30b are bent in a U-shaped cross section as shown in FIGS.
The horizontally bent rear edge extending in a U-shape forms a long horizontal surface in the left-right direction to form the tank support rail 31.

A tank rear support member 32 is provided between the rear vertical frames 22 _R and 22 _{R at} a rear position facing the upper portion 30 a of the operation panel 30. Mount brackets 33,
33 protrudes in a horizontal state toward the inside.

The same height as the tank rear support member 32
With right and left vertical frame 22_F,twenty two _RTank right side support
A holding member 34 is erected, and the right supporting member 34 of the tank is
Mount brackets 35, 35 on the left and right at predetermined locations
It protrudes horizontally (inside).

The left and front vertical frames _22F , _22R
The brackets 36, 36 are provided at substantially the same height as the tank rear support member 32 and the tank right support member 34 so as to face each other.
The tank left side support member 37 is detachably supported.

The tank left support member 37 has a rectangular cylindrical shape, and its front end opening is fitted to the front bracket 36 as shown in FIG. 7, and the diagonally cut-out opening at the rear end is inserted from the front to the rear. After fitting to the bracket 36, the front and rear brackets 36,
It is erected on 36 and fixed with bolts 40, 40 from the left side, respectively.

Mount brackets 38, 39 are protruded from the inner side surface (right side surface) of the tank left side support member 37, and the front mount bracket 38 protrudes rightward (inside) vertically when viewed from above, but is rearward. The side mount bracket 39 projects obliquely rearward when viewed from above. A long anti-vibration rubber 41 is laid on the upper surface of the tank support rail 31 along the edge of the rail, and the mounting bracket 3 of the tank rear support member 32 is provided.
Anti-vibration rubbers 42, 42 are fixed to the upper surfaces of 3, 33, respectively.

The main frame structure constituting the protective frame 20 is as described above. First, the internal combustion engine 2 and the generator 3 are fixedly supported on the main body supporting plates 25 _L and 25 _R via the mounting member 26, and other components are provided. The intake system and the exhaust system are mounted in the protective frame 20 and occupy a space in the protective frame 20 excluding the upper space. Various instruments and operation switches are provided on the front surface of the operation panel 30, and a control device 45 is provided on the back surface.

Then, with the tank left support member 37 removed and the upper left side surface of the protective frame 20 opened, the fuel tank 4 is inserted horizontally into the protective frame 20 from the opening. Fuel tank 4
The fuel cap 6 is removed so as not to interfere with the front and rear horizontal frame 23 _L of the protective frame 20, and the fuel cock 7 is on the left side in a horizontal posture, the front flange 5 is attached to the tank support rail 31, and the rear flange is 5 is the back support member of the tank 32
The fuel tank 4 is mounted on the mounting brackets 33 and 33 and pushed in to the right, so that the fuel tank 4 is mounted on the tank support rail.
Guided by 31, it is easily inserted into protective frame 20.

When the fuel tank 4 is inserted into the protective frame 20 as far as it will go, the right flange 5 is attached to the tank right support member 34.
Are mounted on the mount brackets 35, 35, and the front and rear flanges 5 of the fuel tank 4 are supported by the tank support rail 31 and the mount bracket 33 via the vibration isolating rubbers 41, 42.

In this state, the left supporting member 37 of the tank is closed by the vertical frames 22 _F and 22 _R so as to close the left opening of the protective frame 20.
The left flange of the fuel tank 4 is placed and supported on the mount brackets 38, 39 of the tank left support member 37 via the vibration isolating rubber 52 by being bridged between the front and rear brackets 36, 36 protruding from the front. To

In this state, the bolts 51 and 53 are tightened to attach the fuel tank 4 to the protective frame 20.
The flanges 5 are mounted on the tank support rail 31, the mount brackets 33 and 33 of the tank rear support member 32, the mount brackets 35 and 35 of the tank right support member 34, and the mount brackets 38 and 39 of the tank left support member 37.
Supported via 42, 50, 52. And fuel cap 6
Is screwed into the fuel supply port, and the fuel hose 8 is connected to the fuel cock 7.

As described above, since the fuel tank 4 is supported by all four flanges 5, it is possible to reliably support a large and heavy fuel tank, and to prevent impact during transportation and movement. A fuel tank supporting structure capable of sufficiently withstanding the above can be provided. Since above the fuel tank 4 disposed fences 20 is covered with two protective frame 24 _F, 24 _R, the top surface portion of the fuel tank 20 is protected.

The fuel tank 4 is inserted horizontally from the internal combustion engine 2 side of the protective frame 20 while the front and rear flanges 5 are supported by the mount brackets 33, 33 of the tank support rail 31 and the tank rear support member 32. because it is secured to the protective frame 24 _F, 24 _R of the above the fuel tank 20 does not become an obstacle for the attachment work of the fuel tank 4, also it is inserted into the protective frame 20 while being supported flange 5 around Therefore, if the flange 5 is first supported on the mount bracket 33 of the tank support rail 31 and the tank rear support member 32, the flange 5 can be inserted so as to be pushed in.
Even though the fuel tank 4 is a large one that is fully installed between the protective frames 20, the mounting operation can be easily performed.

Further, the fuel tank 4 is inserted into the protective frame 20 with the side opposite to the side of the internal combustion engine 2 where the fuel cock 7 is located, so that the fuel cock 7 projecting downward interferes with the internal combustion engine 2 and the working machine 3. And the piping connection of the fuel system after the mounting of the fuel tank 4 is extremely simple. Since the fuel tank 4 is supported via the vibration isolating rubber, the vibration transmitted from the protective frame 20 is absorbed and the vibration is not applied to the fuel tank 4 as much as possible.

In this embodiment, as shown in FIGS. 6 and 7, on the right side of the protective frame 20, a support plate 62 is installed on support frames 60 and 61 projecting in a substantially U-shape, and a battery 65 is mounted. It is mounted and fixed with a fixing bracket 63.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a protective frame type internal combustion engine generator according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a frame structure of a protection frame and the like of the protection frame type internal combustion engine generator.

FIG. 3 is a front view of the frame structure.

FIG. 4 is a plan view in which the same parts are omitted.

FIG. 5 is a left side view of the tank with a left support member removed.

FIG. 6 is an overall front view of the protective frame type internal combustion engine generator.

FIG. 7 is a plan view of the same.

FIG. 8 is a left side view of the protective frame type internal combustion engine generator in which a left support member of the tank is indicated by a virtual line.

FIG. 9 is a front view of a conventional protective frame type internal combustion engine generator.

FIG. 10 is a plan view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Protective frame type internal combustion engine generator, 2 ... Internal combustion engine, 3 ... Generator, 4 ... Fuel tank, 5 ... Flange, 6 ... Fuel cap, 7 ... Fuel cock, 8 ... Fuel hose, 10 ... Recoil starter, 11 ... air cleaner, 20 ... protective frame, 21 _F , 21 _R ...
Left and right horizontal frames, 22 _F , 22 _F , 22 _R , 22 _R ... vertical frames, 23 _L , 23 _R ... front and rear horizontal frames, 24 _F , 24 _R ... protection frames, 25 _L , 25 _R ... body support plates, 26 ... Mounting member, 27 ... bracket, 30 ... operation panel, 31 ... tank support rail, 32 ... tank rear support member, 33 ... mount bracket, 34 ... tank right side support member, 35 ... mount bracket, 36 ... bracket, 37 ... tank Left support member, 38, 39… Mount bracket, 40… Bolt, 41, 42… Vibration isolation rubber, 45… Control device, 50… Vibration isolation rubber,
51: bolt, 52: anti-vibration rubber, 53: bolt, 60, 61: support frame, 62: support plate, 63: fixing bracket, 65: battery.

Claims (3)

[Claims] An internal combustion engine and working machines driven by the internal combustion engine are arranged side by side in a substantially rectangular parallelepiped space formed in a protective frame, and a fuel tank is provided above the internal combustion engine and the working machine. In the protective frame type internal combustion engine working machine disposed, the fuel tank has a substantially rectangular shape in a top view, a flange is formed on an outer peripheral side surface in a circumferential direction, and a fuel cock is provided on the left and right side edges of the lower surface on the internal combustion engine side. A pair of front and rear tank support members is provided between the vertical frames of the protective frame in the horizontal direction, and a tank support rail having a long horizontal surface formed on at least one of the pair of tank front and rear support members. The fuel tank is configured such that one of the front and rear flanges is supported by the tank support rail and the other is supported by a tank front and rear support member or a tank support rail. With the side opposite to the rack at the top, it is inserted substantially horizontally from the left and right openings of the protective frame from the side where the internal combustion engine is disposed, and is fixed at a predetermined position so as to cover the entire upper space of the protective frame. A protection frame type internal combustion engine working machine, wherein an upper part of the tank is covered with a protection frame spanned over the protection frame. 2. A pair of left and right support members for the tank are provided in the front and rear horizontal direction between the vertical frames of the protective frame, and the left and right support members support the left and right flanges of the fuel tank in a mounted state. The left and right tank left and right support members on the internal combustion engine side of the pair of left and right tank left and right support members are detachable, and after inserting the fuel tank into the space inside the protective frame, the left and right tanks on the internal combustion engine side 2. The structure according to claim 1, wherein a support member is fixed between said vertical frames.
A protective frame type internal combustion engine working machine as described in the above. 3. A protection frame covering an upper part of the fuel tank,
2. The protection frame type internal combustion engine working machine according to claim 1, wherein the plurality of rod-like members are bridged between upper right and left ends of the protection frame, and are provided above the fuel tank.