JPH04201625A - Muffler mounting device for engines such as tractors - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a muffler mounting device for a tractor engine.

(Prior art and problems to be solved by the invention) When the muffler and tail pipe are connected to the exhaust manifold attached to the engine body side, the vibration of the muffler is large due to swinging of the tractor and vibration of the engine. In this invention, the exhaust manifold is provided with a thick connecting plate, and this connecting plate is connected to the muffler, tail pipe, etc., so that the structure is stable. It is something.

(Means for Solving the Problems) This invention provides a thick sheet metal connecting plate 4 on the end face 3 of the connecting port 2 of the muffler 1, and connects an exhaust manifold 5 and a tail pipe 6 via the connecting plate 4. This is a configuration of a muffler mounting device for an engine such as a tractor that is connected in communication.

(Operation and Effects of the Invention) The exhaust manifold 5 is connected to the exhaust port on the engine body side, and the muffler 1 is installed and communicated with the exhaust manifold 5 via the connecting plate 4. A tail pipe 6 that communicates with the connecting plate 4 is also connected to the connecting plate 4.

For this reason, 1, the muffler 1 as well as the tail pipe 6 are connected directly to the exhaust manifold 5 via the thick connecting plate 4.
The tail pipes 6 are attached and connected to each other, have rigidity, and can prevent the tail pipes 6 from being shaken greatly even by engine vibrations, etc., and can maintain a stable mounting posture even during long-term use.

(Example) When rotating the engine, a cylinder head 8 and a cylinder head cover 9 are provided in the upper part of the engine body 7, an oil pan 10 is provided in the lower part, and each camshaft from the crankshaft is provided in the front part. , a gear case 11 containing a gear mechanism interlocked with a governor shaft, an oil pump shaft, etc. is provided. Above the engine body 7, a muffler 1 is installed on the left and right sides, an air cleaner 12 is installed on the opposite side, and a compressor 13 for an air conditioner is installed between these.

The exhaust manifold 5 has a mounting seat 14 integrally molded at its base, is branched so as to communicate with an exhaust port 17 corresponding to the number of cylinders, and is fastened and fixed to the side surface of the exhaust port of the cylinder head 8 with bolts 15. A connecting plate 4 made of sheet metal and thicker than the muffler 1, muffler cover 18, etc. is integrally tightened and fixed on the top surface of the tip of the exhaust manifold 5 with bolts 16. The end surface 3 of the connecting port 2 of the muffler 1 is integrally joined, and a tail pipe 6 is connected to the connecting plate 4, and the tail pipe 6 is communicated with the inside of the muffler 1. Therefore, the exhaust gas blown from the exhaust port 17 reaches the muffler 1 from the exhaust manifold 5, and is further discharged through the tail pipe 6.

A muffler cover 18 is provided on the outer periphery of the muffler 1 so as to form a predetermined heat-insulating interval 19, and is detachably attached to the exhaust manifold 5, the muffler 1, etc. with bolts 20 and the like.

Further, the exhaust manifold 5, the connecting plate 4, and a part of the tail pipe 6 are also covered with the muffler cover 18. Further, the heat insulating space 19 is filled with a heat insulating material such as glass wool or asbestos. The tip of the tail pipe 6 is exposed from inside a lower cover 46 at the bottom of the bonnet 35 to the outside. 47 is a muffler cutter.

A clutch housing 21 is located at the rear end of the engine body 7.
A transmission case 22 is further connected to the rear side, and a rear wheel 23 is mounted on the shaft.Furthermore, a frame 24 is provided along the front and back direction on both left and right sides of these vehicle bodies, and a front axle is connected to the front part. A front wheel 26 is provided by the housing 25 so as to be freely steerable, and the rear wheels 23, front wheels 26, etc. are interlocked with each other by transmission from the engine. 27 is the steering wheel, 28 is the rear wheel fender, 129 is the driver's seat,
Reference numeral 30 represents a hydraulic case located above the transmission case 22, and reference numeral 31 represents a lift arm that lifts and lowers a working machine connected to a lower link, a top link, and the like.

A radiator 32 and a radiator fan 33 are provided in front of the engine, and an air conditioner condenser 34 is provided in front of the radiator 32, so that the engine is cooled by the rotation of the radiator fan 33. A battery 37, an oil tank 38 for power steering, a receiver dryer 39 for an air conditioner, etc. are arranged between the condenser 34 and the bonnet grill 36 of the bonnet 35. 40 is a headlamp attached to the bonnet 35, and -41 is a horn. 42 is an opening/closing shaft of a bonnet 35 provided on the frame 24, and the bonnet 35 can be opened by rotating its rear end toward the front and upward. Reference numeral 43 denotes a fuel tank provided above the rear side of the engine, and is provided extending from the bottom of the bonnet 35 to the inside of the steering post 44, dash board 45, and the like.

Each exhaust port 1 of the cylinder head 8 is driven by the engine.
The exhaust gas discharged from 7 is the exhaust manifold 5.
It passes through the inside and is squirted into the muffler.

Furthermore, it is discharged outside the machine via the tail pipe 6. High heat is dissipated from these muffler 1, exhaust manifold 5, etc., but since the heat insulating gap 19 between the muffler cover 18 and the outer periphery is filled with a heat insulating material, the heat is not directly diffused into the engine room. It can be reduced.

Furthermore, the muffler 1 and tail pipe 6 vibrate due to the exhaust pressure when exhausting from the muffler 1 and the vibration of the engine body 7 itself, but these muffler 1 and tail pipe 6 are connected to thick connecting plates 4, respectively. Since it is integrally installed, there is less vibration and less chance of disconnection.

As tractors have become smaller, and as the engine room has become equipped with air conditioner compressors, condensers, oil pumps, oil tanks, etc.
However, by installing the muffler 1, tail pipe 6, etc. as in the present invention and the embodiments,
Each component can be installed close to the muffler 1 etc., making it more compact.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a partially sectional rear view, FIG. 2 is a partially sectional side view, FIG. 3 is a partially sectional plan view, and FIG. 4 is a partially sectional side view. The figure is a side view. (Explanation of symbols) 1 Muffler 2 Connection port 3 End face 4 Connection plate 5 Exhaust manifold 6 Tail pipe

Claims (1)

[Claims] A thick sheet metal connecting plate 4 is attached to the end face 3 of the connecting port 2 of the muffler 1.
A muffler mounting device for an engine such as a tractor, in which an exhaust manifold 5 and a tail pipe 6 are connected and connected via the connecting plate 4.