JPH0738649Y2 - Muffler exhaust system for tractor - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use This invention is to work lightly when a working machine is attached to the rear of the machine and an assistant is attached to this working machine, or in a house or an orchard. The present invention relates to a muffler exhaust device in a tractor that can perform

(B) Related Art Conventionally, as a muffler mounting device for a tractor, a device in which a tail pipe is rotated outside a side cover of an engine room is already known.

(C) Problems to be solved by the invention The known muffler mounting device is such that a tractor driver and a worker attached to the tractor are paired by connecting a digger to the rear of the tractor as a working machine. When working, when there is no wind,
Or, when the wind direction is opposite to the traveling direction of the tractor, there is a problem that the worker exhausts the exhaust gas discharged from the tail pipe, and in the case of the vertical fixed muffler, in the house or in the orchard. However, there is a problem that the upper part of the muffler hits the structure or the branch of the fruit tree when performing the work.

(D) Means for Solving the Problems In the present invention, a muffler 8 which is horizontal in the front-rear direction of the aircraft is provided in the upper corner space in the engine room, which is composed of the bonnet top plate 6 and the left and right bonnet side covers 7. In a tractor that is housed and connected to the engine 1, and a tail pipe is connected to an exhaust port 8A of the muffler 8 via an outlet pipe 13, the end face on the outlet side of the muffler 8 is obliquely inward with respect to the center of the muffler 8. The exhaust port 8A is arranged so as to be displaced upward, and the exhaust port 8A
The flange 15 provided at the base of the outlet pipe 13 formed in a substantially L shape at a position corresponding to can be converted into a posture in which the tip end portion of the outlet pipe 13 faces upward and a posture in which the tip end portion of the outlet pipe 13 faces outward downward. Mounted so that the tail pipe extends upward through the hole of the bonnet top plate at the tip of the outlet pipe 13 in the upward posture, and the tip of the outlet pipe 13 in the outward oblique downward posture. When the worker performs work such as digging on the working machine, the outlet pipe and the tail pipe can be exchanged by connecting the part to the lower part along the inside of the bonnet side cover 7 so as to extend downward. When installing in a muffler with the etc. facing up and working in a house or in an orchard, etc., make the outlet pipe facing downward and replace the tail pipe so that it can be attached to the outlet pipe. Solved the point .

(E) Action When connecting a digger to the rear of the tractor and working with an assistant on it, attach the outlet pipe to the exhaust side end face of the muffler with a long length at the upper end of this outlet pipe. When the tail pipe is connected, the exhaust from the muffler is discharged upward and high so that it is not blown to the assistant.

Also, when working in a house or an orchard, the flange of the outlet pipe base is converted and attached to the exhaust side end face of the muffler so that the distal end portion of the outlet pipe is in an outwardly downward downward posture. When the tail pipe bent to bypass the engine is extended along the inner surface of the bonnet side cover and connected downward, the tail pipe does not project upward or outward, and the structure or fruit tree branch does not project. Never collide with.

(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. 1 is an engine mounted on a chassis 2 of a tractor, and a radiator 4 is installed upright on a front portion of a cooling fan 3 by a radiator mounting plate 5. The engine room accommodating the engine 1 is composed of a bonnet top plate 6 having a hole 6A through which a tail pipe 17 described later penetrates, left and right bonnet side covers 7, and the like.

The muffler 8 is housed horizontally in the front-rear direction of the airframe in one of the upper corner spaces in the engine room, and the intake port of the rear end face is connected to the manifold 10 via the exhaust pipe 11 and the exhaust outlet side. On the front end face that becomes, the exhaust port 8A is arranged so as to be displaced inwardly and obliquely upward with respect to the center of the muffler, and the bolt 12 described below is provided on a diameter inclined by about 45 degrees with the exhaust port 8A interposed therebetween. Two screw holes for screwing are provided, and the outlet pipe 13
Is bent into a substantially L shape by bending an intermediate portion, and the flange 15 at the base thereof is aligned with the screw hole in a posture in which the tip portion of the outlet pipe 13 is vertically upward and in a posture in which the outlet pipe 13 is inclined downward downward. It is possible to form two sets of holes by using bolts 12 and 12 and convert them upwards as shown in FIGS. 1 and 2 or downwards as shown in FIG. 3 and screw them through the gasket 16. The upward tail pipe 17 has a heat shield cover 18 attached to the outer periphery with screws 19 and a mounting plate 20 fixed to the base side so that the outlet pipe 13 faces upward and the front end of the muffler 8 is configured. Screw it to the surface and attach the upward tail pipe 17 to the outlet pipe 13.
The upper part of the support plate 21 is screwed to the mounting plate 20 and the outlet pipe 13 with the bolts 22 ... And the lower part of the support plate 21 is screwed to the radiator mounting plate 5 with the bolts 23.

In this state, the exhaust air from the muffler 8 is discharged from the upper end of the upward tail pipe 17 through the outlet pipe 13, so that the excavation work is performed by connecting the excavator to the rear part of the tractor to assist the excavation work. When it is processed by a worker, exhaust gas can be prevented from being blown to the auxiliary worker regardless of the wind direction or its strength.

When working in a house or in an orchard, remove the upward tail pipe 17 and the support plate 21,
12 and 12 are pulled out, the outlet pipe 13 is screwed with the outlet pipe 13 facing downward, and the downward tail pipe 25 whose upper end is bent is attached to the outlet pipe 13
The radiator mounting plate 5 is fitted to the radiator mounting plate 5, and the middle portion thereof is mounted on the radiator mounting plate 5 by the clamp 26 and the bolt 27, and the clamp 28 fitted on the upper portion is fixed to the bracket.

In this state, the exhaust from the muffler 8 is discharged downward, and the downward tail pipe 25 is placed in the engine room,
In other words, because it is inside the bonnet side cover 7,
It does not damage the structure or the branches of fruit trees, and does not hinder the work.

FIGS. 4 to 5 show the fastening portion of the bonnet top plate 6, in which the holes 30 on both sides of the front portion are loosely fitted to the bolts 31 projecting from both sides of the upper portion of the grill 31a and can be detached by the nuts 31b. Screwed on,
The means for supporting and fixing the rear portion includes a receiving plate 32 that is integral with the partition wall 32a rising from the front surface of the radiator mounting plate 5, a U-shape in plan view, and has a groove on the outer periphery. And a vibration isolating rubber 34 having a collar 33 inserted into the center thereof, a lower portion of which is fitted into a groove of the vibration isolating rubber 34 and has a U-shaped receiving member 35, and a bolt through hole 36 (see FIG. 5). ) Insert the above anti-vibration rubber 34
And a bolt 37 which is screwed to the receiving plate 32, and the vibration damping rubber 34 can prevent the vibration of the bonnet top plate 6.

37 is a top plate that closes the opening 6a of the bonnet top plate 6,
It can be attached and detached by a knob 41 having a spring 39 interposed and a locking pin 40 at the lower end, and is removed when pouring water into the radiator 4. The locking pin 40 is inserted into an elongated hole formed in the bonnet top plate 6, and when the knob 41 is rotated, it is pressed against the lower surface.

Further, as shown in FIG. 6, when only the front part of the opening 6a is opened and the container box 6b is fixed to the rear part in a fitted state, the inner case 6c made of a heat insulating material is attached to the container box 6b. If you fit and store tools etc., you can insulate and prevent noise, and put tea, lunch etc. in the storage box 6b at low temperature such as late autumn, early spring or winter, and the inner case The contents of 6c can be kept warm by fitting with the bottom up.

7 to 9 show the air cleaner mounting portion,
The intake hose 43 of the air cleaner 42 is supported while being inserted into a pipe 46 integrated with a mounting frame 45 and held by a clamp 47, and has a flexible connecting hose 43a at the rear portion,
The mounting frame 45 also serves as a shield plate in the engine room,
The lower part is bent backward and the upper part is bent forward. The bent parts at both ends are screwed to the radiator mounting plate 5 with bolts 48, and the upper part is bent to the bent part of the bonnet top plate 6 with left and right bolts. Since it is screwed on at 50, 50, it contributes to prevent the radiator from collapsing.

51 is a radiator net, the lower part is a guide rail 52
Is slidably fitted to the upper part, and the upper part is guided and received by the lower rear edge of the mounting frame 45.

When supporting the intake hose 43 and the harness 55 of the battery 53 and the headlight 54 on the side of the radiator mounting plate 5, as shown in FIGS. Through which the heat insulating materials 58, 59 are superposed on the outside of the intake hose 43, the heat insulating materials 56, 58, 59 are covered with an iron plate or the like, and the iron plate is fixed to an appropriate member such as the radiator mounting plate 5, It is possible to prevent the battery 53 and the like from being overheated, and prevent dust from entering the portion where the intake hose 43 takes in air.

FIGS. 12 and 13 show an example in which the precleaner 60 is arranged in the front room of the radiator, and the flat mounting portion 43b is attached to the intake hose 43 on the outside of the radiator mounting plate 5,
Attach the precleaner 60 to the bonnet bracket 61 with the screw of the suspension plate 62 and direct its intake port diagonally forward and downward.The front end side of the connecting pipe 63 is fastened to the inlet pipe of the precleaner 60 with a band, and is attached to the outer periphery on the base side. Has a plurality of projections 64 ..... projected at equal intervals, and a plurality of holes 65 into which the projections 64. The precleaner 60 can be connected by simply pushing it in the direction, and the mounting position or direction of the precleaner 60 can be easily changed depending on the destination such as a desert area or other areas.

(G) Effect of the device This device is connected to the engine by storing a horizontal muffler in the front-rear direction of the fuselage in the upper corner space inside the engine room that consists of the bonnet top plate and the left and right bonnet side covers. In a tractor in which a tail pipe is connected to an exhaust port of the muffler via an outlet pipe, an exhaust port is provided at an end face on the outlet side of the muffler, which is offset inwardly and obliquely upward with respect to the center of the muffler, Approximately L at the position corresponding to the exhaust port
A flange provided on the base of the outlet pipe formed in a V shape is attached so that the tip of the outlet pipe can be converted into a posture in which the tip end portion faces upward and a posture in which the tip end portion faces outward and downward, and the tail pipe faces upward. The state in which the tip of the outlet pipe in the posture is penetrated through the hole of the bonnet top plate and largely extended upward, and the tip of the outlet pipe in the posture obliquely downward outward is arranged along the inside of the bonnet side cover 7. Since it is connected so that it can be extended downward, it can be replaced by a muffler so that the tip of the outlet pipe faces upward when a worker is attached to a work machine attached to the rear of the machine. By attaching it to the end face and connecting the upward tail pipe to the outlet pipe through the hole of the bonnet top plate, the tip of the tail pipe is separated from the bonnet top plate by a distance larger than the bonnet top plate, and the exhaust from the muffler is directed to the operator in the wind direction. No matter what is sprayed, and when working in a house or in a narrow place such as an orchard, convert the outlet pipe so that the tip of the outlet pipe faces downward and outward, and the end surface of the muffler. If you connect it to the tail pipe for the downward direction, the tail pipe will be stored along the inside of the bonnet side cover, and the tail pipe will be on the outside as well as above. It is possible to work without protruding and the tail pipe not colliding with the obstacle.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view, FIG. 2 is a front view with a tail pipe facing upward, and FIG.
Figure is a front view with the tail pipe facing downward, Figure 4 is a side view with the bonnet top plate support section broken, Figure 5 is a perspective view of the front section of the bonnet top panel, and Figure 6 (a) shows the storage section. 6B is a side view showing the same, FIG. 7 is a side view showing the air cleaner intake portion, FIG. 8 is a front view showing the same, FIG. 9 is a perspective view showing the same mounting frame, and FIG. FIG. 11 is a vertical sectional view of the harness and the intake pipe mounting portion, FIG. 11 is a lateral sectional view of the same, FIG. 12 is a plan view of the precleaner mounting portion, and FIG. 13 is a side view of the same. 1 ... Engine, 4 ... Radiator, 5 ... Radiator mounting plate, 6 ... Bonnet top plate, 7 ... Bonnet side cover, 8 ... Muffler, 8A ... Exhaust port, 13 ... Outlet pipe, 15 ... … Flange, 17… Upward tailpipe, 25…
… Downward tailpipe

Claims (1)

[Scope of utility model registration request] 1. A muffler 8 which is horizontal in the front-rear direction of the body is housed in an upper corner space in an engine room constituted by a bonnet top plate 6 and left and right bonnet side covers 7 and connected to the engine 1. Outlet pipe 13 to exhaust port 8A of muffler 8
In the tractor in which the tail pipe is connected via the exhaust pipe, the exhaust port 8A is provided on the end face on the outlet side of the muffler 8 and is displaced obliquely inward and upward with respect to the center of the muffler 8.
The flange 15 provided at the base of the outlet pipe 13 formed in a substantially L shape at a position corresponding to 8A can be converted into a posture in which the tip end portion of the outlet pipe 13 is directed upward and a posture in which the tip end portion thereof is directed outward and obliquely downward. The tail pipe is mounted so that it can be installed in such a manner that the tail pipe penetrates the hole of the bonnet top plate 6 at the distal end of the outlet pipe 13 in the upward posture and extends greatly upward, and the outlet pipe in the outward oblique downward posture. A muffler exhaust device for a tractor, characterized in that the tip end of the hood 13 is replaceably connected to a state in which it is extended downward along the inside of the bonnet side cover 7.